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 a identity addresses was used without enhanced connection complete event, 3350 // the connection complete event contains the current random address of the peer device. 3351 // This random address is needed in the case of a re-pairing 3352 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3353 conn = gap_get_outgoing_le_connection(); 3354 // if outgoing connection object is available, check if identity address was used. 3355 // if yes, track resolved random address and provide rpa 3356 // note: we don't update hci le subevent connection complete 3357 if (conn != NULL){ 3358 if (hci_is_le_identity_address_type(conn->address_type)){ 3359 memcpy(&gap_event[20], &gap_event[8], 6); 3360 gap_event[7] = conn->address_type; 3361 reverse_bd_addr(conn->address, &gap_event[8]); 3362 } 3363 } 3364 } 3365 3366 // we're done with it 3367 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3368 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3369 #endif 3370 } else { 3371 #ifdef ENABLE_LE_PERIPHERAL 3372 // if we're slave, it was an incoming connection, advertisements have stopped 3373 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3374 #endif 3375 } 3376 3377 // LE connections are auto-accepted, so just create a connection if there isn't one already 3378 if (!conn){ 3379 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3380 } 3381 3382 // no memory, sorry. 3383 if (!conn){ 3384 return; 3385 } 3386 3387 conn->state = OPEN; 3388 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3389 conn->le_connection_interval = conn_interval; 3390 3391 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3392 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3393 3394 #ifdef ENABLE_LE_PERIPHERAL 3395 if (role == HCI_ROLE_SLAVE){ 3396 hci_update_advertisements_enabled_for_current_roles(); 3397 } 3398 #endif 3399 3400 // init unenhanced att bearer mtu 3401 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3402 conn->att_connection.mtu_exchanged = false; 3403 3404 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3405 3406 // restart timer 3407 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3408 // btstack_run_loop_add_timer(&conn->timeout); 3409 3410 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3411 3412 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3413 hci_emit_event(gap_event, sizeof(gap_event), 1); 3414 3415 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3416 hci_emit_nr_connections_changed(); 3417 } 3418 #endif 3419 3420 #ifdef ENABLE_CLASSIC 3421 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){ 3422 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3423 // LEVEL_4 is tested by l2cap 3424 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3425 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3426 if (level >= LEVEL_3){ 3427 // MITM not possible without keyboard or display 3428 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3429 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3430 3431 // MITM possible if one side has keyboard and the other has keyboard or display 3432 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3433 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3434 3435 // MITM not possible if one side has only display and other side has no keyboard 3436 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3437 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3438 } 3439 // LEVEL 2 requires SSP, which is a given 3440 return true; 3441 } 3442 3443 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3444 // get requested security level 3445 gap_security_level_t requested_security_level = conn->requested_security_level; 3446 if (hci_stack->gap_secure_connections_only_mode){ 3447 requested_security_level = LEVEL_4; 3448 } 3449 3450 // assess security: LEVEL 4 requires SC 3451 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3452 if ((requested_security_level == LEVEL_4) && 3453 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3454 !hci_remote_sc_enabled(conn)){ 3455 log_info("Level 4 required, but SC not supported -> abort"); 3456 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3457 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3458 return; 3459 } 3460 3461 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3462 // - GAP/MOD/NBON/BV-02-C 3463 // - GAP/DM/NBON/BV-01-C 3464 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3465 switch (conn->io_cap_response_auth_req){ 3466 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3467 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3468 if (hci_stack->bondable == false){ 3469 log_info("Dedicated vs. non-bondable -> abort"); 3470 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3471 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3472 return; 3473 } 3474 default: 3475 break; 3476 } 3477 } 3478 3479 // assess security based on io capabilities 3480 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3481 // responder: fully validate io caps of both sides as well as OOB data 3482 bool security_possible = false; 3483 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3484 3485 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3486 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3487 // so we merge the OOB data availability 3488 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3489 if (conn->classic_oob_c_192 != NULL){ 3490 have_oob_data |= 1; 3491 } 3492 if (conn->classic_oob_c_256 != NULL){ 3493 have_oob_data |= 2; 3494 } 3495 // for up to Level 3, either P-192 as well as P-256 will do 3496 // 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 3497 // if remote does not SC, we should not receive P-256 data either 3498 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3499 security_possible = true; 3500 } 3501 // for Level 4, P-256 is needed 3502 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3503 security_possible = true; 3504 } 3505 #endif 3506 3507 if (security_possible == false){ 3508 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3509 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3510 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3511 return; 3512 } 3513 } else { 3514 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3515 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3516 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3517 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3518 log_info("Level 3+ required, but no input/output -> abort"); 3519 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3520 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3521 return; 3522 } 3523 #endif 3524 #endif 3525 } 3526 3527 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3528 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3529 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3530 } else { 3531 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3532 } 3533 #endif 3534 } 3535 3536 #endif 3537 3538 static void event_handler(uint8_t *packet, uint16_t size){ 3539 3540 uint16_t event_length = packet[1]; 3541 3542 // assert packet is complete 3543 if (size != (event_length + 2u)){ 3544 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3545 return; 3546 } 3547 3548 hci_con_handle_t handle; 3549 hci_connection_t * conn; 3550 int i; 3551 3552 #ifdef ENABLE_CLASSIC 3553 hci_link_type_t link_type; 3554 bd_addr_t addr; 3555 bd_addr_type_t addr_type; 3556 #endif 3557 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3558 hci_iso_stream_t * iso_stream; 3559 le_audio_big_t * big; 3560 le_audio_big_sync_t * big_sync; 3561 #endif 3562 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3563 btstack_linked_list_iterator_t it; 3564 #endif 3565 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3566 uint8_t advertising_handle; 3567 #endif 3568 3569 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3570 3571 switch (hci_event_packet_get_type(packet)) { 3572 3573 case HCI_EVENT_COMMAND_COMPLETE: 3574 handle_command_complete_event(packet, size); 3575 break; 3576 3577 case HCI_EVENT_COMMAND_STATUS: 3578 handle_command_status_event(packet, size); 3579 break; 3580 3581 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3582 if (size < 3) return; 3583 uint16_t num_handles = packet[2]; 3584 if (size != (3u + num_handles * 4u)) return; 3585 #ifdef ENABLE_CLASSIC 3586 bool notify_sco = false; 3587 #endif 3588 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3589 bool notify_iso = false; 3590 #endif 3591 uint16_t offset = 3; 3592 for (i=0; i<num_handles;i++){ 3593 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3594 offset += 2u; 3595 uint16_t num_packets = little_endian_read_16(packet, offset); 3596 offset += 2u; 3597 3598 conn = hci_connection_for_handle(handle); 3599 if (conn != NULL) { 3600 3601 if (conn->num_packets_sent >= num_packets) { 3602 conn->num_packets_sent -= num_packets; 3603 } else { 3604 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3605 conn->num_packets_sent = 0; 3606 } 3607 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3608 #ifdef ENABLE_CLASSIC 3609 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3610 notify_sco = true; 3611 } 3612 #endif 3613 } 3614 3615 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3616 hci_controller_dump_packets(); 3617 #endif 3618 3619 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3620 if (conn == NULL){ 3621 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3622 if (iso_stream != NULL){ 3623 if (iso_stream->num_packets_sent >= num_packets) { 3624 iso_stream->num_packets_sent -= num_packets; 3625 } else { 3626 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3627 iso_stream->num_packets_sent = 0; 3628 } 3629 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3630 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3631 if (big != NULL){ 3632 big->num_completed_timestamp_current_valid = true; 3633 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3634 } 3635 } 3636 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3637 num_packets, handle, iso_stream->num_packets_sent); 3638 notify_iso = true; 3639 } 3640 } 3641 #endif 3642 } 3643 3644 #ifdef ENABLE_CLASSIC 3645 if (notify_sco){ 3646 hci_notify_if_sco_can_send_now(); 3647 } 3648 #endif 3649 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3650 if (notify_iso){ 3651 hci_iso_notify_can_send_now(); 3652 } 3653 #endif 3654 break; 3655 } 3656 3657 #ifdef ENABLE_CLASSIC 3658 case HCI_EVENT_FLUSH_OCCURRED: 3659 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3660 handle = hci_event_flush_occurred_get_handle(packet); 3661 conn = hci_connection_for_handle(handle); 3662 if (conn) { 3663 log_info("Flush occurred, disconnect 0x%04x", handle); 3664 conn->state = SEND_DISCONNECT; 3665 } 3666 break; 3667 3668 case HCI_EVENT_INQUIRY_COMPLETE: 3669 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3670 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3671 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3672 hci_emit_event(event, sizeof(event), 1); 3673 } 3674 break; 3675 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3676 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3677 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3678 } 3679 break; 3680 case HCI_EVENT_CONNECTION_REQUEST: 3681 reverse_bd_addr(&packet[2], addr); 3682 link_type = (hci_link_type_t) packet[11]; 3683 3684 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3685 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3686 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3687 bd_addr_copy(hci_stack->decline_addr, addr); 3688 break; 3689 } 3690 3691 if (hci_stack->gap_classic_accept_callback != NULL){ 3692 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3693 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3694 bd_addr_copy(hci_stack->decline_addr, addr); 3695 break; 3696 } 3697 } 3698 3699 // TODO: eval COD 8-10 3700 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3701 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3702 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3703 if (!conn) { 3704 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3705 } 3706 if (!conn) { 3707 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3708 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3709 bd_addr_copy(hci_stack->decline_addr, addr); 3710 hci_run(); 3711 // avoid event to higher layer 3712 return; 3713 } 3714 conn->state = RECEIVED_CONNECTION_REQUEST; 3715 // store info about eSCO 3716 if (link_type == HCI_LINK_TYPE_ESCO){ 3717 conn->remote_supported_features[0] |= 1; 3718 } 3719 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3720 if (addr_type == BD_ADDR_TYPE_SCO){ 3721 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3722 // ACL exists unless fuzzing 3723 if (acl_conn != NULL) { 3724 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3725 } 3726 } 3727 hci_run(); 3728 break; 3729 3730 case HCI_EVENT_CONNECTION_COMPLETE: 3731 // Connection management 3732 reverse_bd_addr(&packet[5], addr); 3733 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3734 addr_type = BD_ADDR_TYPE_ACL; 3735 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3736 if (conn) { 3737 switch (conn->state){ 3738 // expected states 3739 case ACCEPTED_CONNECTION_REQUEST: 3740 case SENT_CREATE_CONNECTION: 3741 break; 3742 // unexpected state -> ignore 3743 default: 3744 // don't forward event to app 3745 return; 3746 } 3747 if (!packet[2]){ 3748 conn->state = OPEN; 3749 conn->con_handle = little_endian_read_16(packet, 3); 3750 3751 // trigger write supervision timeout if we're master 3752 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3753 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3754 } 3755 3756 // trigger write automatic flush timeout 3757 if (hci_stack->automatic_flush_timeout != 0){ 3758 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3759 } 3760 3761 // restart timer 3762 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3763 btstack_run_loop_add_timer(&conn->timeout); 3764 3765 // trigger remote features for dedicated bonding 3766 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3767 hci_trigger_remote_features_for_connection(conn); 3768 } 3769 3770 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3771 3772 hci_emit_nr_connections_changed(); 3773 } else { 3774 // connection failed 3775 hci_handle_connection_failed(conn, packet[2]); 3776 } 3777 } 3778 break; 3779 3780 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3781 reverse_bd_addr(&packet[5], addr); 3782 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3783 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3784 3785 // SCO exists unless fuzzer 3786 if (conn == NULL) break; 3787 3788 if (packet[2] != ERROR_CODE_SUCCESS){ 3789 // connection failed, remove entry 3790 hci_handle_connection_failed(conn, packet[2]); 3791 break; 3792 } 3793 3794 conn->state = OPEN; 3795 conn->con_handle = little_endian_read_16(packet, 3); 3796 3797 // update sco payload length for eSCO connections 3798 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3799 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3800 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3801 } 3802 3803 #ifdef ENABLE_SCO_OVER_HCI 3804 // update SCO 3805 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3806 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3807 } 3808 // trigger can send now 3809 if (hci_have_usb_transport()){ 3810 hci_stack->sco_can_send_now = true; 3811 } 3812 3813 // setup implict sco flow control 3814 conn->sco_tx_ready = 0; 3815 conn->sco_tx_active = 0; 3816 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3817 3818 #endif 3819 #ifdef HAVE_SCO_TRANSPORT 3820 // configure sco transport 3821 if (hci_stack->sco_transport != NULL){ 3822 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3823 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3824 } 3825 #endif 3826 break; 3827 3828 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3829 handle = little_endian_read_16(packet, 3); 3830 conn = hci_connection_for_handle(handle); 3831 if (!conn) break; 3832 if (!packet[2]){ 3833 const uint8_t * features = &packet[5]; 3834 hci_handle_remote_features_page_0(conn, features); 3835 3836 // read extended features if possible 3837 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3838 && ((conn->remote_supported_features[0] & 2) != 0)) { 3839 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3840 break; 3841 } 3842 } 3843 hci_handle_remote_features_received(conn); 3844 break; 3845 3846 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3847 handle = little_endian_read_16(packet, 3); 3848 conn = hci_connection_for_handle(handle); 3849 if (!conn) break; 3850 // status = ok, page = 1 3851 if (!packet[2]) { 3852 uint8_t page_number = packet[5]; 3853 uint8_t maximum_page_number = packet[6]; 3854 const uint8_t * features = &packet[7]; 3855 bool done = false; 3856 switch (page_number){ 3857 case 1: 3858 hci_handle_remote_features_page_1(conn, features); 3859 if (maximum_page_number >= 2){ 3860 // get Secure Connections (Controller) from Page 2 if available 3861 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3862 } else { 3863 // otherwise, assume SC (Controller) == SC (Host) 3864 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3865 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3866 } 3867 done = true; 3868 } 3869 break; 3870 case 2: 3871 hci_handle_remote_features_page_2(conn, features); 3872 done = true; 3873 break; 3874 default: 3875 break; 3876 } 3877 if (!done) break; 3878 } 3879 hci_handle_remote_features_received(conn); 3880 break; 3881 3882 case HCI_EVENT_LINK_KEY_REQUEST: 3883 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3884 hci_event_link_key_request_get_bd_addr(packet, addr); 3885 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3886 if (!conn) break; 3887 3888 // lookup link key in db if not cached 3889 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3890 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3891 } 3892 3893 // response sent by hci_run() 3894 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3895 #endif 3896 break; 3897 3898 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3899 hci_event_link_key_request_get_bd_addr(packet, addr); 3900 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3901 if (!conn) break; 3902 3903 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3904 3905 // CVE-2020-26555: ignore NULL link key 3906 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3907 if (btstack_is_null(&packet[8], 16)) break; 3908 3909 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3910 // Change Connection Encryption keeps link key type 3911 if (link_key_type != CHANGED_COMBINATION_KEY){ 3912 conn->link_key_type = link_key_type; 3913 } 3914 3915 // cache link key. link keys stored in little-endian format for legacy reasons 3916 memcpy(&conn->link_key, &packet[8], 16); 3917 3918 // only store link key: 3919 // - if bondable enabled 3920 if (hci_stack->bondable == false) break; 3921 // - if security level sufficient 3922 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3923 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3924 break; 3925 } 3926 3927 case HCI_EVENT_PIN_CODE_REQUEST: 3928 hci_event_pin_code_request_get_bd_addr(packet, addr); 3929 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3930 if (!conn) break; 3931 3932 hci_pairing_started(conn, false); 3933 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3934 if (!hci_stack->bondable ){ 3935 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3936 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3937 hci_run(); 3938 return; 3939 } 3940 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3941 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3942 log_info("Level 4 required, but SC not supported -> abort"); 3943 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3944 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3945 hci_run(); 3946 return; 3947 } 3948 break; 3949 3950 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3951 hci_event_io_capability_response_get_bd_addr(packet, addr); 3952 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3953 if (!conn) break; 3954 3955 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3956 hci_pairing_started(conn, true); 3957 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3958 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3959 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3960 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3961 #endif 3962 break; 3963 3964 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3965 hci_event_io_capability_response_get_bd_addr(packet, addr); 3966 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3967 if (!conn) break; 3968 3969 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3970 hci_connection_timestamp(conn); 3971 hci_pairing_started(conn, true); 3972 break; 3973 3974 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3975 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3976 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3977 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3978 if (!conn) break; 3979 3980 hci_connection_timestamp(conn); 3981 3982 hci_pairing_started(conn, true); 3983 3984 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3985 break; 3986 #endif 3987 3988 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3989 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3990 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3991 if (!conn) break; 3992 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3993 if (hci_stack->ssp_auto_accept){ 3994 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3995 }; 3996 } else { 3997 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3998 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3999 // don't forward event to app 4000 hci_run(); 4001 return; 4002 } 4003 break; 4004 4005 case HCI_EVENT_USER_PASSKEY_REQUEST: 4006 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4007 if (hci_stack->ssp_auto_accept){ 4008 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4009 }; 4010 break; 4011 4012 case HCI_EVENT_MODE_CHANGE: 4013 handle = hci_event_mode_change_get_handle(packet); 4014 conn = hci_connection_for_handle(handle); 4015 if (!conn) break; 4016 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4017 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4018 break; 4019 #endif 4020 4021 case HCI_EVENT_ENCRYPTION_CHANGE: 4022 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4023 handle = hci_event_encryption_change_get_connection_handle(packet); 4024 conn = hci_connection_for_handle(handle); 4025 if (!conn) break; 4026 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4027 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4028 if (encryption_enabled){ 4029 if (hci_is_le_connection(conn)){ 4030 // For LE, we accept connection as encrypted 4031 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4032 } 4033 #ifdef ENABLE_CLASSIC 4034 else { 4035 4036 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4037 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4038 bool connected_uses_aes_ccm = encryption_enabled == 2; 4039 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4040 #ifdef ENABLE_TESTING_SUPPORT 4041 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4042 // - GAP/SEC/SEM/BI-31-C 4043 // - GAP/SEC/SEM/BI-32-C 4044 // - GAP/SEC/SEM/BI-33-C 4045 4046 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4047 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4048 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4049 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4050 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4051 } 4052 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4053 conn->link_key_type, new_link_key_type); 4054 conn->link_key_type = new_link_key_type; 4055 #else 4056 log_info("SC during pairing, but only E0 now -> abort"); 4057 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4058 break; 4059 #endif 4060 } 4061 4062 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4063 if (connected_uses_aes_ccm){ 4064 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4065 } 4066 4067 #ifdef ENABLE_TESTING_SUPPORT 4068 // work around for issue with PTS dongle 4069 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4070 #endif 4071 // validate encryption key size 4072 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4073 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4074 // already got encryption key size 4075 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4076 } else { 4077 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4078 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4079 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4080 } else { 4081 // if not, pretend everything is perfect 4082 hci_handle_read_encryption_key_size_complete(conn, 16); 4083 } 4084 } 4085 } 4086 #endif 4087 } else { 4088 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4089 } 4090 } else { 4091 #ifdef ENABLE_CLASSIC 4092 if (!hci_is_le_connection(conn)){ 4093 uint8_t status = hci_event_encryption_change_get_status(packet); 4094 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4095 conn->bonding_flags &= ~BONDING_DEDICATED; 4096 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4097 conn->bonding_status = status; 4098 } 4099 // trigger security update -> level 0 4100 hci_handle_mutual_authentication_completed(conn); 4101 } 4102 #endif 4103 } 4104 4105 break; 4106 4107 #ifdef ENABLE_CLASSIC 4108 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4109 handle = hci_event_authentication_complete_get_connection_handle(packet); 4110 conn = hci_connection_for_handle(handle); 4111 if (!conn) break; 4112 4113 // clear authentication active flag 4114 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4115 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4116 4117 // authenticated only if auth status == 0 4118 if (hci_event_authentication_complete_get_status(packet) == 0){ 4119 // authenticated 4120 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4121 4122 // If not already encrypted, start encryption 4123 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4124 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4125 break; 4126 } 4127 } 4128 4129 // emit updated security level (will be 0 if not authenticated) 4130 hci_handle_mutual_authentication_completed(conn); 4131 break; 4132 4133 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4134 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4135 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4136 if (!conn) break; 4137 4138 // treat successfully paired connection as authenticated 4139 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4140 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4141 } 4142 4143 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4144 break; 4145 #endif 4146 4147 // HCI_EVENT_DISCONNECTION_COMPLETE 4148 // has been split, to first notify stack before shutting connection down 4149 // see end of function, too. 4150 case HCI_EVENT_DISCONNECTION_COMPLETE: 4151 if (packet[2]) break; // status != 0 4152 handle = little_endian_read_16(packet, 3); 4153 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4154 if (hci_stack->acl_fragmentation_total_size > 0u) { 4155 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4156 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4157 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4158 hci_stack->acl_fragmentation_total_size = 0; 4159 hci_stack->acl_fragmentation_pos = 0; 4160 if (release_buffer){ 4161 hci_release_packet_buffer(); 4162 } 4163 } 4164 } 4165 4166 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4167 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4168 if (hci_stack->iso_fragmentation_total_size > 0u) { 4169 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4170 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4171 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4172 hci_stack->iso_fragmentation_total_size = 0; 4173 hci_stack->iso_fragmentation_pos = 0; 4174 if (release_buffer){ 4175 hci_release_packet_buffer(); 4176 } 4177 } 4178 } 4179 4180 // finalize iso stream for CIS handle 4181 iso_stream = hci_iso_stream_for_con_handle(handle); 4182 if (iso_stream != NULL){ 4183 hci_iso_stream_finalize(iso_stream); 4184 break; 4185 } 4186 4187 // finalize iso stream(s) for ACL handle 4188 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4189 while (btstack_linked_list_iterator_has_next(&it)){ 4190 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4191 if (iso_stream->acl_handle == handle ) { 4192 hci_iso_stream_finalize(iso_stream); 4193 } 4194 } 4195 #endif 4196 4197 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4198 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4199 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4200 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4201 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4202 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4203 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4204 hci_stack->num_cmd_packets = 1; 4205 } 4206 #endif 4207 4208 conn = hci_connection_for_handle(handle); 4209 if (!conn) break; 4210 #ifdef ENABLE_CLASSIC 4211 // pairing failed if it was ongoing 4212 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4213 #endif 4214 4215 // emit dedicatd bonding event 4216 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4217 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4218 } 4219 4220 // mark connection for shutdown, stop timers, reset state 4221 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4222 hci_connection_stop_timer(conn); 4223 hci_connection_init(conn); 4224 4225 #ifdef ENABLE_BLE 4226 #ifdef ENABLE_LE_PERIPHERAL 4227 // re-enable advertisements for le connections if active 4228 if (hci_is_le_connection(conn)){ 4229 hci_update_advertisements_enabled_for_current_roles(); 4230 } 4231 #endif 4232 #endif 4233 break; 4234 4235 case HCI_EVENT_HARDWARE_ERROR: 4236 log_error("Hardware Error: 0x%02x", packet[2]); 4237 if (hci_stack->hardware_error_callback){ 4238 (*hci_stack->hardware_error_callback)(packet[2]); 4239 } else { 4240 // if no special requests, just reboot stack 4241 hci_power_control_off(); 4242 hci_power_control_on(); 4243 } 4244 break; 4245 4246 #ifdef ENABLE_CLASSIC 4247 case HCI_EVENT_ROLE_CHANGE: 4248 if (packet[2]) break; // status != 0 4249 reverse_bd_addr(&packet[3], addr); 4250 addr_type = BD_ADDR_TYPE_ACL; 4251 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4252 if (!conn) break; 4253 conn->role = (hci_role_t) packet[9]; 4254 break; 4255 #endif 4256 4257 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4258 // release packet buffer only for asynchronous transport and if there are not further fragments 4259 if (hci_transport_synchronous()) { 4260 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4261 return; // instead of break: to avoid re-entering hci_run() 4262 } 4263 hci_stack->acl_fragmentation_tx_active = 0; 4264 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4265 hci_stack->iso_fragmentation_tx_active = 0; 4266 if (hci_stack->iso_fragmentation_total_size) break; 4267 #endif 4268 if (hci_stack->acl_fragmentation_total_size) break; 4269 hci_release_packet_buffer(); 4270 4271 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4272 hci_iso_notify_can_send_now(); 4273 #endif 4274 // L2CAP receives this event via the hci_emit_event below 4275 4276 #ifdef ENABLE_CLASSIC 4277 // For SCO, we do the can_send_now_check here 4278 hci_notify_if_sco_can_send_now(); 4279 #endif 4280 break; 4281 4282 #ifdef ENABLE_CLASSIC 4283 case HCI_EVENT_SCO_CAN_SEND_NOW: 4284 // For SCO, we do the can_send_now_check here 4285 hci_stack->sco_can_send_now = true; 4286 hci_notify_if_sco_can_send_now(); 4287 return; 4288 4289 // explode inquriy results for easier consumption 4290 case HCI_EVENT_INQUIRY_RESULT: 4291 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4292 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4293 gap_inquiry_explode(packet, size); 4294 break; 4295 #endif 4296 4297 #ifdef ENABLE_BLE 4298 case HCI_EVENT_LE_META: 4299 switch (packet[2]){ 4300 #ifdef ENABLE_LE_CENTRAL 4301 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4302 if (!hci_stack->le_scanning_enabled) break; 4303 le_handle_advertisement_report(packet, size); 4304 break; 4305 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4306 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4307 if (!hci_stack->le_scanning_enabled) break; 4308 le_handle_extended_advertisement_report(packet, size); 4309 break; 4310 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4311 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4312 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4313 break; 4314 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4315 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4316 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4317 while (btstack_linked_list_iterator_has_next(&it)) { 4318 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4319 if (advertising_set->advertising_handle == advertising_handle){ 4320 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4321 } 4322 } 4323 break; 4324 #endif 4325 #endif 4326 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4327 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4328 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4329 hci_handle_le_connection_complete_event(packet); 4330 break; 4331 4332 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4333 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4334 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4335 conn = hci_connection_for_handle(handle); 4336 if (!conn) break; 4337 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4338 break; 4339 4340 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4341 // connection 4342 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4343 conn = hci_connection_for_handle(handle); 4344 if (conn) { 4345 // read arguments 4346 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4347 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4348 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4349 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4350 4351 // validate against current connection parameter range 4352 le_connection_parameter_range_t existing_range; 4353 gap_get_connection_parameter_range(&existing_range); 4354 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4355 if (update_parameter){ 4356 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4357 conn->le_conn_interval_min = le_conn_interval_min; 4358 conn->le_conn_interval_max = le_conn_interval_max; 4359 conn->le_conn_latency = le_conn_latency; 4360 conn->le_supervision_timeout = le_supervision_timeout; 4361 } else { 4362 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4363 } 4364 } 4365 break; 4366 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4367 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4368 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4369 conn = hci_connection_for_handle(handle); 4370 if (conn) { 4371 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4372 } 4373 break; 4374 #endif 4375 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4376 case HCI_SUBEVENT_LE_CIS_REQUEST: 4377 // incoming CIS request, allocate iso stream object and cache metadata 4378 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4379 hci_subevent_le_cis_request_get_cig_id(packet), 4380 hci_subevent_le_cis_request_get_cis_id(packet)); 4381 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4382 if (iso_stream != NULL){ 4383 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4384 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4385 } 4386 break; 4387 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4388 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4389 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4390 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4391 iso_stream = hci_iso_stream_for_con_handle(handle); 4392 btstack_assert(iso_stream != NULL); 4393 // track connection info 4394 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4395 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4396 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4397 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4398 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4399 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4400 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4401 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4402 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4403 // CIS Accept by Peripheral 4404 if (status == ERROR_CODE_SUCCESS){ 4405 if (iso_stream->max_sdu_p_to_c > 0){ 4406 // we're peripheral and we will send data 4407 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4408 } else { 4409 // we're peripheral and we will only receive data 4410 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4411 } 4412 } else { 4413 hci_cis_handle_created(iso_stream, status); 4414 } 4415 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4416 } else { 4417 // CIG Setup by Central 4418 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4419 btstack_assert(cig != NULL); 4420 // update iso stream state 4421 if (status == ERROR_CODE_SUCCESS){ 4422 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4423 } else { 4424 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4425 } 4426 // update cig state 4427 uint8_t i; 4428 for (i=0;i<cig->num_cis;i++){ 4429 if (cig->cis_con_handles[i] == handle){ 4430 cig->cis_setup_active[i] = false; 4431 if (status == ERROR_CODE_SUCCESS){ 4432 cig->cis_established[i] = true; 4433 } else { 4434 hci_cis_handle_created(iso_stream, status); 4435 } 4436 } 4437 } 4438 4439 // trigger iso path setup if complete 4440 bool cis_setup_active = false; 4441 for (i=0;i<cig->num_cis;i++){ 4442 cis_setup_active |= cig->cis_setup_active[i]; 4443 } 4444 if (cis_setup_active == false){ 4445 cig->state_vars.next_cis = 0; 4446 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4447 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4448 } 4449 } 4450 } 4451 break; 4452 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4453 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4454 big = hci_big_for_handle(packet[4]); 4455 if (big != NULL){ 4456 uint8_t status = packet[3]; 4457 if (status == ERROR_CODE_SUCCESS){ 4458 // store bis_con_handles and trigger iso path setup 4459 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4460 uint8_t i; 4461 for (i=0;i<num_bis;i++){ 4462 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4463 big->bis_con_handles[i] = bis_handle; 4464 // assign bis handle 4465 btstack_linked_list_iterator_t it; 4466 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4467 while (btstack_linked_list_iterator_has_next(&it)){ 4468 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4469 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4470 (iso_stream->group_id == big->big_handle)){ 4471 iso_stream->cis_handle = bis_handle; 4472 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4473 break; 4474 } 4475 } 4476 } 4477 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4478 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4479 big->state_vars.next_bis = 0; 4480 } 4481 } else { 4482 // create BIG failed or has been stopped by us 4483 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4484 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4485 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4486 hci_emit_big_created(big, status); 4487 } else { 4488 hci_emit_big_terminated(big); 4489 } 4490 } 4491 } 4492 break; 4493 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4494 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4495 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4496 if (big != NULL){ 4497 // finalize associated ISO streams 4498 btstack_linked_list_iterator_t it; 4499 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4500 while (btstack_linked_list_iterator_has_next(&it)){ 4501 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4502 if (iso_stream->group_id == big->big_handle){ 4503 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4504 btstack_linked_list_iterator_remove(&it); 4505 btstack_memory_hci_iso_stream_free(iso_stream); 4506 } 4507 } 4508 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4509 switch (big->state){ 4510 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4511 hci_emit_big_created(big, big->state_vars.status); 4512 break; 4513 default: 4514 hci_emit_big_terminated(big); 4515 break; 4516 } 4517 } 4518 break; 4519 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4520 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4521 big_sync = hci_big_sync_for_handle(packet[4]); 4522 if (big_sync != NULL){ 4523 uint8_t status = packet[3]; 4524 uint8_t big_handle = packet[4]; 4525 if (status == ERROR_CODE_SUCCESS){ 4526 // store bis_con_handles and trigger iso path setup 4527 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4528 uint8_t i; 4529 for (i=0;i<num_bis;i++){ 4530 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4531 big_sync->bis_con_handles[i] = bis_handle; 4532 // setup iso_stream_t 4533 btstack_linked_list_iterator_t it; 4534 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4535 while (btstack_linked_list_iterator_has_next(&it)){ 4536 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4537 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4538 (iso_stream->group_id == big_sync->big_handle)){ 4539 iso_stream->cis_handle = bis_handle; 4540 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4541 break; 4542 } 4543 } 4544 } 4545 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4546 // trigger iso path setup 4547 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4548 big_sync->state_vars.next_bis = 0; 4549 } 4550 } else { 4551 // create BIG Sync failed or has been stopped by us 4552 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4553 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4554 hci_emit_big_sync_created(big_sync, status); 4555 } else { 4556 hci_emit_big_sync_stopped(big_handle); 4557 } 4558 } 4559 } 4560 break; 4561 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4562 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4563 big_sync = hci_big_sync_for_handle(packet[4]); 4564 if (big_sync != NULL){ 4565 uint8_t big_handle = packet[4]; 4566 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4567 hci_emit_big_sync_stopped(big_handle); 4568 } 4569 break; 4570 #endif 4571 default: 4572 break; 4573 } 4574 break; 4575 #endif 4576 case HCI_EVENT_VENDOR_SPECIFIC: 4577 // Vendor specific commands often create vendor specific event instead of num completed packets 4578 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4579 switch (hci_stack->manufacturer){ 4580 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4581 hci_stack->num_cmd_packets = 1; 4582 break; 4583 default: 4584 break; 4585 } 4586 break; 4587 default: 4588 break; 4589 } 4590 4591 handle_event_for_current_stack_state(packet, size); 4592 4593 // notify upper stack 4594 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4595 4596 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4597 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4598 handle = little_endian_read_16(packet, 3); 4599 hci_connection_t * aConn = hci_connection_for_handle(handle); 4600 // discard connection if app did not trigger a reconnect in the event handler 4601 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4602 hci_shutdown_connection(aConn); 4603 } 4604 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4605 hci_controller_dump_packets(); 4606 #endif 4607 } 4608 4609 // execute main loop 4610 hci_run(); 4611 } 4612 4613 #ifdef ENABLE_CLASSIC 4614 4615 static void sco_handler(uint8_t * packet, uint16_t size){ 4616 // lookup connection struct 4617 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4618 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4619 if (!conn) return; 4620 4621 #ifdef ENABLE_SCO_OVER_HCI 4622 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4623 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4624 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4625 packet[2] = 0x3c; 4626 memmove(&packet[3], &packet[23], 63); 4627 size = 63; 4628 } 4629 } 4630 4631 if (hci_have_usb_transport()){ 4632 // Nothing to do 4633 } else { 4634 // 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); 4635 if (hci_stack->synchronous_flow_control_enabled == 0){ 4636 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4637 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4638 if (conn->sco_tx_active == 0){ 4639 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4640 conn->sco_tx_active = 1; 4641 conn->sco_tx_ready = max_sco_packets; 4642 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4643 hci_notify_if_sco_can_send_now(); 4644 } 4645 } else { 4646 if (conn->sco_tx_ready < max_sco_packets){ 4647 conn->sco_tx_ready++; 4648 } 4649 hci_notify_if_sco_can_send_now(); 4650 } 4651 } 4652 } 4653 #endif 4654 4655 // deliver to app 4656 if (hci_stack->sco_packet_handler) { 4657 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4658 } 4659 4660 #ifdef HAVE_SCO_TRANSPORT 4661 // We can send one packet for each received packet 4662 conn->sco_tx_ready++; 4663 hci_notify_if_sco_can_send_now(); 4664 #endif 4665 4666 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4667 conn->num_packets_completed++; 4668 hci_stack->host_completed_packets = 1; 4669 hci_run(); 4670 #endif 4671 } 4672 #endif 4673 4674 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4675 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4676 // propagate ISO packets received as ACL 4677 hci_iso_stream_t * iso_stream = NULL; 4678 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4679 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4680 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4681 if (iso_stream != NULL){ 4682 packet_type = HCI_ISO_DATA_PACKET; 4683 } 4684 } 4685 #endif 4686 4687 hci_dump_packet(packet_type, 1, packet, size); 4688 switch (packet_type) { 4689 case HCI_EVENT_PACKET: 4690 event_handler(packet, size); 4691 break; 4692 case HCI_ACL_DATA_PACKET: 4693 acl_handler(packet, size); 4694 break; 4695 #ifdef ENABLE_CLASSIC 4696 case HCI_SCO_DATA_PACKET: 4697 sco_handler(packet, size); 4698 break; 4699 #endif 4700 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4701 case HCI_ISO_DATA_PACKET: 4702 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4703 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4704 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4705 } 4706 hci_iso_packet_handler(iso_stream, packet, size); 4707 break; 4708 #endif 4709 default: 4710 break; 4711 } 4712 } 4713 4714 /** 4715 * @brief Add event packet handler. 4716 */ 4717 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4718 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4719 } 4720 4721 /** 4722 * @brief Remove event packet handler. 4723 */ 4724 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4725 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4726 } 4727 4728 /** Register HCI packet handlers */ 4729 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4730 hci_stack->acl_packet_handler = handler; 4731 } 4732 4733 #ifdef ENABLE_CLASSIC 4734 /** 4735 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4736 */ 4737 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4738 hci_stack->sco_packet_handler = handler; 4739 } 4740 #endif 4741 4742 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4743 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4744 hci_stack->iso_packet_handler = handler; 4745 } 4746 #endif 4747 4748 static void hci_state_reset(void){ 4749 // no connections yet 4750 hci_stack->connections = NULL; 4751 4752 // keep discoverable/connectable as this has been requested by the client(s) 4753 // hci_stack->discoverable = 0; 4754 // hci_stack->connectable = 0; 4755 // hci_stack->bondable = 1; 4756 // hci_stack->own_addr_type = 0; 4757 4758 // buffer is free 4759 hci_stack->hci_packet_buffer_reserved = false; 4760 4761 // no pending cmds 4762 hci_stack->decline_reason = 0; 4763 4764 hci_stack->secure_connections_active = false; 4765 4766 #ifdef ENABLE_CLASSIC 4767 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4768 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4769 4770 hci_stack->gap_tasks_classic = 4771 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4772 GAP_TASK_SET_CLASS_OF_DEVICE | 4773 GAP_TASK_SET_LOCAL_NAME | 4774 GAP_TASK_SET_EIR_DATA | 4775 GAP_TASK_WRITE_SCAN_ENABLE | 4776 GAP_TASK_WRITE_PAGE_TIMEOUT; 4777 #endif 4778 4779 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4780 hci_stack->classic_read_local_oob_data = false; 4781 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4782 #endif 4783 4784 // LE 4785 #ifdef ENABLE_BLE 4786 memset(hci_stack->le_random_address, 0, 6); 4787 hci_stack->le_random_address_set = 0; 4788 #endif 4789 #ifdef ENABLE_LE_CENTRAL 4790 hci_stack->le_scanning_active = false; 4791 hci_stack->le_scanning_param_update = true; 4792 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4793 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4794 hci_stack->le_whitelist_capacity = 0; 4795 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4796 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4797 #endif 4798 #endif 4799 #ifdef ENABLE_LE_PERIPHERAL 4800 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4801 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4802 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4803 } 4804 if (hci_stack->le_advertisements_data != NULL){ 4805 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4806 } 4807 #endif 4808 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4809 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4810 #endif 4811 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4812 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4813 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4814 #endif 4815 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4816 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4817 #endif 4818 } 4819 4820 #ifdef ENABLE_CLASSIC 4821 /** 4822 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4823 */ 4824 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4825 // store and open remote device db 4826 hci_stack->link_key_db = link_key_db; 4827 if (hci_stack->link_key_db) { 4828 hci_stack->link_key_db->open(); 4829 } 4830 } 4831 #endif 4832 4833 void hci_init(const hci_transport_t *transport, const void *config){ 4834 4835 #ifdef HAVE_MALLOC 4836 if (!hci_stack) { 4837 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4838 } 4839 #else 4840 hci_stack = &hci_stack_static; 4841 #endif 4842 memset(hci_stack, 0, sizeof(hci_stack_t)); 4843 4844 // reference to use transport layer implementation 4845 hci_stack->hci_transport = transport; 4846 4847 // reference to used config 4848 hci_stack->config = config; 4849 4850 // setup pointer for outgoing packet buffer 4851 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4852 4853 // max acl payload size defined in config.h 4854 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4855 4856 // register packet handlers with transport 4857 transport->register_packet_handler(&packet_handler); 4858 4859 hci_stack->state = HCI_STATE_OFF; 4860 4861 // class of device 4862 hci_stack->class_of_device = 0x007a020c; // Smartphone 4863 4864 // bondable by default 4865 hci_stack->bondable = 1; 4866 4867 #ifdef ENABLE_CLASSIC 4868 // classic name 4869 hci_stack->local_name = default_classic_name; 4870 4871 // Master slave policy 4872 hci_stack->master_slave_policy = 1; 4873 4874 // Allow Role Switch 4875 hci_stack->allow_role_switch = 1; 4876 4877 // Default / minimum security level = 2 4878 hci_stack->gap_security_level = LEVEL_2; 4879 4880 // Default Security Mode 4 4881 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4882 4883 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4884 hci_stack->gap_required_encyrption_key_size = 7; 4885 4886 // Link Supervision Timeout 4887 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4888 4889 // All ACL packet types are enabledh 4890 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4891 #endif 4892 4893 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4894 hci_stack->ssp_enable = 1; 4895 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4896 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4897 hci_stack->ssp_auto_accept = 1; 4898 4899 // Secure Connections: enable (requires support from Controller) 4900 hci_stack->secure_connections_enable = true; 4901 4902 // voice setting - signed 16 bit pcm data with CVSD over the air 4903 hci_stack->sco_voice_setting = 0x60; 4904 4905 #ifdef ENABLE_BLE 4906 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4907 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4908 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4909 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4910 hci_stack->le_connection_latency = 4; // 4 4911 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4912 hci_stack->le_minimum_ce_length = 0; // 0 ms 4913 hci_stack->le_maximum_ce_length = 0; // 0 ms 4914 #endif 4915 4916 #ifdef ENABLE_LE_CENTRAL 4917 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4918 4919 // default LE Scanning 4920 hci_stack->le_scan_type = 0x01; // active 4921 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4922 hci_stack->le_scan_window = 0x30; // 30 ms 4923 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4924 #endif 4925 4926 #ifdef ENABLE_LE_PERIPHERAL 4927 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4928 4929 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4930 hci_stack->le_advertisements_interval_min = 0x0800; 4931 hci_stack->le_advertisements_interval_max = 0x0800; 4932 hci_stack->le_advertisements_type = 0; 4933 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4934 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4935 hci_stack->le_advertisements_channel_map = 0x07; 4936 hci_stack->le_advertisements_filter_policy = 0; 4937 #endif 4938 4939 // connection parameter range used to answer connection parameter update requests in l2cap 4940 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4941 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4942 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4943 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4944 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4945 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4946 4947 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4948 hci_stack->iso_packets_to_queue = 1; 4949 #endif 4950 4951 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4952 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4953 #endif 4954 4955 hci_state_reset(); 4956 } 4957 4958 void hci_deinit(void){ 4959 btstack_run_loop_remove_timer(&hci_stack->timeout); 4960 #ifdef HAVE_MALLOC 4961 if (hci_stack) { 4962 free(hci_stack); 4963 } 4964 #endif 4965 hci_stack = NULL; 4966 4967 #ifdef ENABLE_CLASSIC 4968 disable_l2cap_timeouts = 0; 4969 #endif 4970 } 4971 4972 /** 4973 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4974 */ 4975 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4976 hci_stack->chipset = chipset_driver; 4977 4978 // reset chipset driver - init is also called on power_up 4979 if (hci_stack->chipset && hci_stack->chipset->init){ 4980 hci_stack->chipset->init(hci_stack->config); 4981 } 4982 } 4983 4984 void hci_enable_custom_pre_init(void){ 4985 hci_stack->chipset_pre_init = true; 4986 } 4987 4988 /** 4989 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4990 */ 4991 void hci_set_control(const btstack_control_t *hardware_control){ 4992 // references to used control implementation 4993 hci_stack->control = hardware_control; 4994 // init with transport config 4995 hardware_control->init(hci_stack->config); 4996 } 4997 4998 static void hci_discard_connections(void){ 4999 btstack_linked_list_iterator_t it; 5000 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5001 while (btstack_linked_list_iterator_has_next(&it)){ 5002 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5003 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5004 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5005 hci_shutdown_connection(connection); 5006 } 5007 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5008 while (hci_stack->iso_streams != NULL){ 5009 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5010 } 5011 #endif 5012 } 5013 5014 void hci_close(void){ 5015 5016 #ifdef ENABLE_CLASSIC 5017 // close remote device db 5018 if (hci_stack->link_key_db) { 5019 hci_stack->link_key_db->close(); 5020 } 5021 #endif 5022 5023 hci_discard_connections(); 5024 5025 hci_power_control(HCI_POWER_OFF); 5026 5027 #ifdef HAVE_MALLOC 5028 free(hci_stack); 5029 #endif 5030 hci_stack = NULL; 5031 } 5032 5033 #ifdef HAVE_SCO_TRANSPORT 5034 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5035 hci_stack->sco_transport = sco_transport; 5036 sco_transport->register_packet_handler(&packet_handler); 5037 } 5038 #endif 5039 5040 #ifdef ENABLE_CLASSIC 5041 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5042 // validate ranage and set 5043 if (encryption_key_size < 7) return; 5044 if (encryption_key_size > 16) return; 5045 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5046 } 5047 5048 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5049 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5050 hci_stack->gap_security_mode = security_mode; 5051 return ERROR_CODE_SUCCESS; 5052 } else { 5053 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5054 } 5055 } 5056 5057 gap_security_mode_t gap_get_security_mode(void){ 5058 return hci_stack->gap_security_mode; 5059 } 5060 5061 void gap_set_security_level(gap_security_level_t security_level){ 5062 hci_stack->gap_security_level = security_level; 5063 } 5064 5065 gap_security_level_t gap_get_security_level(void){ 5066 if (hci_stack->gap_secure_connections_only_mode){ 5067 return LEVEL_4; 5068 } 5069 return hci_stack->gap_security_level; 5070 } 5071 5072 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5073 hci_stack->gap_minimal_service_security_level = security_level; 5074 } 5075 5076 void gap_set_secure_connections_only_mode(bool enable){ 5077 hci_stack->gap_secure_connections_only_mode = enable; 5078 } 5079 5080 bool gap_get_secure_connections_only_mode(void){ 5081 return hci_stack->gap_secure_connections_only_mode; 5082 } 5083 #endif 5084 5085 #ifdef ENABLE_CLASSIC 5086 void gap_set_class_of_device(uint32_t class_of_device){ 5087 hci_stack->class_of_device = class_of_device; 5088 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5089 hci_run(); 5090 } 5091 5092 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5093 hci_stack->default_link_policy_settings = default_link_policy_settings; 5094 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5095 hci_run(); 5096 } 5097 5098 void gap_set_allow_role_switch(bool allow_role_switch){ 5099 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5100 } 5101 5102 uint8_t hci_get_allow_role_switch(void){ 5103 return hci_stack->allow_role_switch; 5104 } 5105 5106 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5107 hci_stack->link_supervision_timeout = link_supervision_timeout; 5108 } 5109 5110 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5111 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5112 } 5113 5114 uint16_t hci_automatic_flush_timeout(void){ 5115 return hci_stack->automatic_flush_timeout; 5116 } 5117 5118 void hci_disable_l2cap_timeout_check(void){ 5119 disable_l2cap_timeouts = 1; 5120 } 5121 #endif 5122 5123 #ifndef HAVE_HOST_CONTROLLER_API 5124 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5125 void hci_set_bd_addr(bd_addr_t addr){ 5126 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5127 hci_stack->custom_bd_addr_set = 1; 5128 } 5129 #endif 5130 5131 // State-Module-Driver overview 5132 // state module low-level 5133 // HCI_STATE_OFF off close 5134 // HCI_STATE_INITIALIZING, on open 5135 // HCI_STATE_WORKING, on open 5136 // HCI_STATE_HALTING, on open 5137 // HCI_STATE_SLEEPING, off/sleep close 5138 // HCI_STATE_FALLING_ASLEEP on open 5139 5140 static int hci_power_control_on(void){ 5141 5142 // power on 5143 int err = 0; 5144 if (hci_stack->control && hci_stack->control->on){ 5145 err = (*hci_stack->control->on)(); 5146 } 5147 if (err){ 5148 log_error( "POWER_ON failed"); 5149 hci_emit_hci_open_failed(); 5150 return err; 5151 } 5152 5153 // int chipset driver 5154 if (hci_stack->chipset && hci_stack->chipset->init){ 5155 hci_stack->chipset->init(hci_stack->config); 5156 } 5157 5158 // init transport 5159 if (hci_stack->hci_transport->init){ 5160 hci_stack->hci_transport->init(hci_stack->config); 5161 } 5162 5163 // open transport 5164 err = hci_stack->hci_transport->open(); 5165 if (err){ 5166 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5167 if (hci_stack->control && hci_stack->control->off){ 5168 (*hci_stack->control->off)(); 5169 } 5170 hci_emit_hci_open_failed(); 5171 return err; 5172 } 5173 return 0; 5174 } 5175 5176 static void hci_power_control_off(void){ 5177 5178 log_info("hci_power_control_off"); 5179 5180 // close low-level device 5181 hci_stack->hci_transport->close(); 5182 5183 log_info("hci_power_control_off - hci_transport closed"); 5184 5185 // power off 5186 if (hci_stack->control && hci_stack->control->off){ 5187 (*hci_stack->control->off)(); 5188 } 5189 5190 log_info("hci_power_control_off - control closed"); 5191 5192 hci_stack->state = HCI_STATE_OFF; 5193 } 5194 5195 static void hci_power_control_sleep(void){ 5196 5197 log_info("hci_power_control_sleep"); 5198 5199 #if 0 5200 // don't close serial port during sleep 5201 5202 // close low-level device 5203 hci_stack->hci_transport->close(hci_stack->config); 5204 #endif 5205 5206 // sleep mode 5207 if (hci_stack->control && hci_stack->control->sleep){ 5208 (*hci_stack->control->sleep)(); 5209 } 5210 5211 hci_stack->state = HCI_STATE_SLEEPING; 5212 } 5213 5214 static int hci_power_control_wake(void){ 5215 5216 log_info("hci_power_control_wake"); 5217 5218 // wake on 5219 if (hci_stack->control && hci_stack->control->wake){ 5220 (*hci_stack->control->wake)(); 5221 } 5222 5223 #if 0 5224 // open low-level device 5225 int err = hci_stack->hci_transport->open(hci_stack->config); 5226 if (err){ 5227 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5228 if (hci_stack->control && hci_stack->control->off){ 5229 (*hci_stack->control->off)(); 5230 } 5231 hci_emit_hci_open_failed(); 5232 return err; 5233 } 5234 #endif 5235 5236 return 0; 5237 } 5238 5239 static void hci_power_enter_initializing_state(void){ 5240 // set up state machine 5241 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5242 hci_stack->hci_packet_buffer_reserved = false; 5243 hci_stack->state = HCI_STATE_INITIALIZING; 5244 5245 #ifndef HAVE_HOST_CONTROLLER_API 5246 if (hci_stack->chipset_pre_init) { 5247 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5248 } else 5249 #endif 5250 { 5251 hci_stack->substate = HCI_INIT_SEND_RESET; 5252 } 5253 } 5254 5255 static void hci_power_enter_halting_state(void){ 5256 #ifdef ENABLE_BLE 5257 // drop entries scheduled for removal, mark others for re-adding 5258 btstack_linked_list_iterator_t it; 5259 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5260 while (btstack_linked_list_iterator_has_next(&it)){ 5261 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5262 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5263 btstack_linked_list_iterator_remove(&it); 5264 btstack_memory_whitelist_entry_free(entry); 5265 } else { 5266 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5267 } 5268 } 5269 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5270 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5271 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5272 while (btstack_linked_list_iterator_has_next(&it)){ 5273 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5274 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5275 btstack_linked_list_iterator_remove(&it); 5276 btstack_memory_periodic_advertiser_list_entry_free(entry); 5277 } else { 5278 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5279 continue; 5280 } 5281 } 5282 #endif 5283 #endif 5284 // see hci_run 5285 hci_stack->state = HCI_STATE_HALTING; 5286 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5287 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5288 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5289 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5290 btstack_run_loop_add_timer(&hci_stack->timeout); 5291 } 5292 5293 // returns error 5294 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5295 int err; 5296 switch (power_mode){ 5297 case HCI_POWER_ON: 5298 err = hci_power_control_on(); 5299 if (err != 0) { 5300 log_error("hci_power_control_on() error %d", err); 5301 return err; 5302 } 5303 hci_power_enter_initializing_state(); 5304 break; 5305 case HCI_POWER_OFF: 5306 // do nothing 5307 break; 5308 case HCI_POWER_SLEEP: 5309 // do nothing (with SLEEP == OFF) 5310 break; 5311 default: 5312 btstack_assert(false); 5313 break; 5314 } 5315 return ERROR_CODE_SUCCESS; 5316 } 5317 5318 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5319 switch (power_mode){ 5320 case HCI_POWER_ON: 5321 // do nothing 5322 break; 5323 case HCI_POWER_OFF: 5324 // no connections yet, just turn it off 5325 hci_power_control_off(); 5326 break; 5327 case HCI_POWER_SLEEP: 5328 // no connections yet, just turn it off 5329 hci_power_control_sleep(); 5330 break; 5331 default: 5332 btstack_assert(false); 5333 break; 5334 } 5335 return ERROR_CODE_SUCCESS; 5336 } 5337 5338 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5339 switch (power_mode){ 5340 case HCI_POWER_ON: 5341 // do nothing 5342 break; 5343 case HCI_POWER_OFF: 5344 hci_power_enter_halting_state(); 5345 break; 5346 case HCI_POWER_SLEEP: 5347 // see hci_run 5348 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5349 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5350 break; 5351 default: 5352 btstack_assert(false); 5353 break; 5354 } 5355 return ERROR_CODE_SUCCESS; 5356 } 5357 5358 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5359 switch (power_mode){ 5360 case HCI_POWER_ON: 5361 hci_power_enter_initializing_state(); 5362 break; 5363 case HCI_POWER_OFF: 5364 // do nothing 5365 break; 5366 case HCI_POWER_SLEEP: 5367 // see hci_run 5368 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5369 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5370 break; 5371 default: 5372 btstack_assert(false); 5373 break; 5374 } 5375 return ERROR_CODE_SUCCESS; 5376 } 5377 5378 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5379 switch (power_mode){ 5380 case HCI_POWER_ON: 5381 hci_power_enter_initializing_state(); 5382 break; 5383 case HCI_POWER_OFF: 5384 hci_power_enter_halting_state(); 5385 break; 5386 case HCI_POWER_SLEEP: 5387 // do nothing 5388 break; 5389 default: 5390 btstack_assert(false); 5391 break; 5392 } 5393 return ERROR_CODE_SUCCESS; 5394 } 5395 5396 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5397 int err; 5398 switch (power_mode){ 5399 case HCI_POWER_ON: 5400 err = hci_power_control_wake(); 5401 if (err) return err; 5402 hci_power_enter_initializing_state(); 5403 break; 5404 case HCI_POWER_OFF: 5405 hci_power_enter_halting_state(); 5406 break; 5407 case HCI_POWER_SLEEP: 5408 // do nothing 5409 break; 5410 default: 5411 btstack_assert(false); 5412 break; 5413 } 5414 return ERROR_CODE_SUCCESS; 5415 } 5416 5417 int hci_power_control(HCI_POWER_MODE power_mode){ 5418 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5419 btstack_run_loop_remove_timer(&hci_stack->timeout); 5420 int err = 0; 5421 switch (hci_stack->state){ 5422 case HCI_STATE_OFF: 5423 err = hci_power_control_state_off(power_mode); 5424 break; 5425 case HCI_STATE_INITIALIZING: 5426 err = hci_power_control_state_initializing(power_mode); 5427 break; 5428 case HCI_STATE_WORKING: 5429 err = hci_power_control_state_working(power_mode); 5430 break; 5431 case HCI_STATE_HALTING: 5432 err = hci_power_control_state_halting(power_mode); 5433 break; 5434 case HCI_STATE_FALLING_ASLEEP: 5435 err = hci_power_control_state_falling_asleep(power_mode); 5436 break; 5437 case HCI_STATE_SLEEPING: 5438 err = hci_power_control_state_sleeping(power_mode); 5439 break; 5440 default: 5441 btstack_assert(false); 5442 break; 5443 } 5444 if (err != 0){ 5445 return err; 5446 } 5447 5448 // create internal event 5449 hci_emit_state(); 5450 5451 // trigger next/first action 5452 hci_run(); 5453 5454 return 0; 5455 } 5456 5457 5458 static void hci_halting_run(void) { 5459 5460 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5461 5462 hci_connection_t *connection; 5463 #ifdef ENABLE_BLE 5464 #ifdef ENABLE_LE_PERIPHERAL 5465 bool stop_advertismenets; 5466 #endif 5467 #endif 5468 5469 switch (hci_stack->substate) { 5470 case HCI_HALTING_CLASSIC_STOP: 5471 #ifdef ENABLE_CLASSIC 5472 if (!hci_can_send_command_packet_now()) return; 5473 5474 if (hci_stack->connectable || hci_stack->discoverable){ 5475 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5476 hci_send_cmd(&hci_write_scan_enable, 0); 5477 return; 5478 } 5479 #endif 5480 /* fall through */ 5481 5482 case HCI_HALTING_LE_ADV_STOP: 5483 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5484 5485 #ifdef ENABLE_BLE 5486 #ifdef ENABLE_LE_PERIPHERAL 5487 if (!hci_can_send_command_packet_now()) return; 5488 5489 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5490 5491 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5492 if (hci_extended_advertising_supported()){ 5493 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5494 btstack_linked_list_iterator_t it; 5495 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5496 // stop all periodic advertisements and check if an extended set is active 5497 while (btstack_linked_list_iterator_has_next(&it)){ 5498 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5499 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5500 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5501 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5502 return; 5503 } 5504 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5505 stop_advertismenets = true; 5506 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5507 } 5508 } 5509 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5510 if (stop_advertismenets){ 5511 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5512 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5513 return; 5514 } 5515 } else 5516 #else /* ENABLE_LE_PERIPHERAL */ 5517 { 5518 if (stop_advertismenets) { 5519 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5520 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5521 return; 5522 } 5523 } 5524 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5525 #endif /* ENABLE_LE_PERIPHERAL */ 5526 #endif /* ENABLE_BLE */ 5527 5528 /* fall through */ 5529 5530 case HCI_HALTING_LE_SCAN_STOP: 5531 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5532 if (!hci_can_send_command_packet_now()) return; 5533 5534 #ifdef ENABLE_BLE 5535 #ifdef ENABLE_LE_CENTRAL 5536 if (hci_stack->le_scanning_active){ 5537 hci_le_scan_stop(); 5538 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5539 return; 5540 } 5541 #endif 5542 #endif 5543 5544 /* fall through */ 5545 5546 case HCI_HALTING_DISCONNECT_ALL: 5547 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5548 if (!hci_can_send_command_packet_now()) return; 5549 5550 // close all open connections 5551 connection = (hci_connection_t *) hci_stack->connections; 5552 if (connection) { 5553 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5554 5555 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5556 5557 // check state 5558 switch(connection->state) { 5559 case SENT_DISCONNECT: 5560 case RECEIVED_DISCONNECTION_COMPLETE: 5561 // wait until connection is gone 5562 return; 5563 default: 5564 break; 5565 } 5566 5567 // finally, send the disconnect command 5568 connection->state = SENT_DISCONNECT; 5569 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5570 return; 5571 } 5572 5573 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5574 // stop BIGs and BIG Syncs 5575 if (hci_stack->le_audio_bigs != NULL){ 5576 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5577 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5578 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5579 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5580 return; 5581 } 5582 if (hci_stack->le_audio_big_syncs != NULL){ 5583 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5584 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5585 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5586 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5587 return; 5588 } 5589 #endif 5590 5591 btstack_run_loop_remove_timer(&hci_stack->timeout); 5592 5593 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5594 log_info("HCI_STATE_HALTING: wait 50 ms"); 5595 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5596 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5597 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5598 btstack_run_loop_add_timer(&hci_stack->timeout); 5599 break; 5600 5601 case HCI_HALTING_W4_CLOSE_TIMER: 5602 // keep waiting 5603 break; 5604 5605 case HCI_HALTING_CLOSE: 5606 // close left over connections (that had not been properly closed before) 5607 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5608 hci_discard_connections(); 5609 5610 log_info("HCI_STATE_HALTING, calling off"); 5611 5612 // switch mode 5613 hci_power_control_off(); 5614 5615 log_info("HCI_STATE_HALTING, emitting state"); 5616 hci_emit_state(); 5617 log_info("HCI_STATE_HALTING, done"); 5618 break; 5619 5620 default: 5621 break; 5622 } 5623 }; 5624 5625 static void hci_falling_asleep_run(void){ 5626 hci_connection_t * connection; 5627 switch(hci_stack->substate) { 5628 case HCI_FALLING_ASLEEP_DISCONNECT: 5629 log_info("HCI_STATE_FALLING_ASLEEP"); 5630 // close all open connections 5631 connection = (hci_connection_t *) hci_stack->connections; 5632 if (connection){ 5633 5634 // send disconnect 5635 if (!hci_can_send_command_packet_now()) return; 5636 5637 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5638 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5639 5640 // send disconnected event right away - causes higher layer connections to get closed, too. 5641 hci_shutdown_connection(connection); 5642 return; 5643 } 5644 5645 if (hci_classic_supported()){ 5646 // disable page and inquiry scan 5647 if (!hci_can_send_command_packet_now()) return; 5648 5649 log_info("HCI_STATE_HALTING, disabling inq scans"); 5650 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5651 5652 // continue in next sub state 5653 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5654 break; 5655 } 5656 5657 /* fall through */ 5658 5659 case HCI_FALLING_ASLEEP_COMPLETE: 5660 log_info("HCI_STATE_HALTING, calling sleep"); 5661 // switch mode 5662 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5663 hci_emit_state(); 5664 break; 5665 5666 default: 5667 break; 5668 } 5669 } 5670 5671 #ifdef ENABLE_CLASSIC 5672 5673 static void hci_update_scan_enable(void){ 5674 // 2 = page scan, 1 = inq scan 5675 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5676 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5677 hci_run(); 5678 } 5679 5680 void gap_discoverable_control(uint8_t enable){ 5681 if (enable) enable = 1; // normalize argument 5682 5683 if (hci_stack->discoverable == enable){ 5684 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5685 return; 5686 } 5687 5688 hci_stack->discoverable = enable; 5689 hci_update_scan_enable(); 5690 } 5691 5692 void gap_connectable_control(uint8_t enable){ 5693 if (enable) enable = 1; // normalize argument 5694 5695 // don't emit event 5696 if (hci_stack->connectable == enable) return; 5697 5698 hci_stack->connectable = enable; 5699 hci_update_scan_enable(); 5700 } 5701 #endif 5702 5703 void gap_local_bd_addr(bd_addr_t address_buffer){ 5704 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5705 } 5706 5707 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5708 static void hci_host_num_completed_packets(void){ 5709 5710 // create packet manually as arrays are not supported and num_commands should not get reduced 5711 hci_reserve_packet_buffer(); 5712 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5713 5714 uint16_t size = 0; 5715 uint16_t num_handles = 0; 5716 packet[size++] = 0x35; 5717 packet[size++] = 0x0c; 5718 size++; // skip param len 5719 size++; // skip num handles 5720 5721 // add { handle, packets } entries 5722 btstack_linked_item_t * it; 5723 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5724 hci_connection_t * connection = (hci_connection_t *) it; 5725 if (connection->num_packets_completed){ 5726 little_endian_store_16(packet, size, connection->con_handle); 5727 size += 2; 5728 little_endian_store_16(packet, size, connection->num_packets_completed); 5729 size += 2; 5730 // 5731 num_handles++; 5732 connection->num_packets_completed = 0; 5733 } 5734 } 5735 5736 packet[2] = size - 3; 5737 packet[3] = num_handles; 5738 5739 hci_stack->host_completed_packets = 0; 5740 5741 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5742 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5743 5744 // release packet buffer for synchronous transport implementations 5745 if (hci_transport_synchronous()){ 5746 hci_release_packet_buffer(); 5747 hci_emit_transport_packet_sent(); 5748 } 5749 } 5750 #endif 5751 5752 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5753 UNUSED(ds); 5754 hci_stack->substate = HCI_HALTING_CLOSE; 5755 hci_halting_run(); 5756 } 5757 5758 static bool hci_run_acl_fragments(void){ 5759 if (hci_stack->acl_fragmentation_total_size > 0u) { 5760 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5761 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5762 if (connection) { 5763 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5764 hci_send_acl_packet_fragments(connection); 5765 return true; 5766 } 5767 } else { 5768 // connection gone -> discard further fragments 5769 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5770 hci_stack->acl_fragmentation_total_size = 0; 5771 hci_stack->acl_fragmentation_pos = 0; 5772 } 5773 } 5774 return false; 5775 } 5776 5777 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5778 static bool hci_run_iso_fragments(void){ 5779 if (hci_stack->iso_fragmentation_total_size > 0u) { 5780 // TODO: flow control 5781 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5782 hci_send_iso_packet_fragments(); 5783 return true; 5784 } 5785 } 5786 return false; 5787 } 5788 #endif 5789 5790 #ifdef ENABLE_CLASSIC 5791 5792 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5793 static bool hci_classic_operation_active(void) { 5794 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5795 return true; 5796 } 5797 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5798 return true; 5799 } 5800 btstack_linked_item_t * it; 5801 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5802 hci_connection_t *connection = (hci_connection_t *) it; 5803 switch (connection->state) { 5804 case SENT_CREATE_CONNECTION: 5805 case SENT_CANCEL_CONNECTION: 5806 case SENT_DISCONNECT: 5807 return true; 5808 default: 5809 break; 5810 } 5811 } 5812 return false; 5813 } 5814 #endif 5815 5816 static bool hci_run_general_gap_classic(void){ 5817 5818 // assert stack is working and classic is active 5819 if (hci_classic_supported() == false) return false; 5820 if (hci_stack->state != HCI_STATE_WORKING) return false; 5821 5822 // decline incoming connections 5823 if (hci_stack->decline_reason){ 5824 uint8_t reason = hci_stack->decline_reason; 5825 hci_stack->decline_reason = 0; 5826 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5827 return true; 5828 } 5829 5830 if (hci_stack->gap_tasks_classic != 0){ 5831 hci_run_gap_tasks_classic(); 5832 return true; 5833 } 5834 5835 // start/stop inquiry 5836 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5837 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5838 if (hci_classic_operation_active() == false) 5839 #endif 5840 { 5841 uint8_t duration = hci_stack->inquiry_state; 5842 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5843 if (hci_stack->inquiry_max_period_length != 0){ 5844 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); 5845 } else { 5846 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5847 } 5848 return true; 5849 } 5850 } 5851 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5852 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5853 hci_send_cmd(&hci_inquiry_cancel); 5854 return true; 5855 } 5856 5857 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5858 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5859 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5860 return true; 5861 } 5862 5863 // remote name request 5864 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5865 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5866 if (hci_classic_operation_active() == false) 5867 #endif 5868 { 5869 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5870 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5871 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5872 return true; 5873 } 5874 } 5875 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5876 // Local OOB data 5877 if (hci_stack->classic_read_local_oob_data){ 5878 hci_stack->classic_read_local_oob_data = false; 5879 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5880 hci_send_cmd(&hci_read_local_extended_oob_data); 5881 } else { 5882 hci_send_cmd(&hci_read_local_oob_data); 5883 } 5884 } 5885 #endif 5886 // pairing 5887 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5888 uint8_t state = hci_stack->gap_pairing_state; 5889 uint8_t pin_code[PIN_CODE_LEN]; 5890 switch (state){ 5891 case GAP_PAIRING_STATE_SEND_PIN: 5892 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5893 memset(pin_code, 0, 16); 5894 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5895 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5896 break; 5897 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5898 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5899 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5900 break; 5901 case GAP_PAIRING_STATE_SEND_PASSKEY: 5902 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5903 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5904 break; 5905 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5906 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5907 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5908 break; 5909 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5910 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5911 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5912 break; 5913 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5914 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5915 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5916 break; 5917 default: 5918 break; 5919 } 5920 return true; 5921 } 5922 return false; 5923 } 5924 #endif 5925 5926 #ifdef ENABLE_BLE 5927 5928 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5929 static uint8_t hci_le_num_phys(uint8_t phys){ 5930 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5931 btstack_assert(phys); 5932 return num_bits_set[phys]; 5933 } 5934 #endif 5935 5936 #ifdef ENABLE_LE_CENTRAL 5937 static void hci_le_scan_stop(void){ 5938 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5939 if (hci_extended_advertising_supported()) { 5940 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5941 } else 5942 #endif 5943 { 5944 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5945 } 5946 } 5947 5948 static void 5949 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5950 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5951 if (hci_extended_advertising_supported()) { 5952 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5953 uint16_t le_connection_scan_interval[3]; 5954 uint16_t le_connection_scan_window[3]; 5955 uint16_t le_connection_interval_min[3]; 5956 uint16_t le_connection_interval_max[3]; 5957 uint16_t le_connection_latency[3]; 5958 uint16_t le_supervision_timeout[3]; 5959 uint16_t le_minimum_ce_length[3]; 5960 uint16_t le_maximum_ce_length[3]; 5961 5962 uint8_t i; 5963 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5964 for (i=0;i<num_phys;i++){ 5965 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5966 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5967 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5968 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5969 le_connection_latency[i] = hci_stack->le_connection_latency; 5970 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5971 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5972 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5973 } 5974 hci_send_cmd(&hci_le_extended_create_connection, 5975 initiator_filter_policy, 5976 hci_stack->le_connection_own_addr_type, // our addr type: 5977 address_type, // peer address type 5978 address, // peer bd addr 5979 hci_stack->le_connection_phys, // initiating PHY 5980 le_connection_scan_interval, // conn scan interval 5981 le_connection_scan_window, // conn scan windows 5982 le_connection_interval_min, // conn interval min 5983 le_connection_interval_max, // conn interval max 5984 le_connection_latency, // conn latency 5985 le_supervision_timeout, // conn latency 5986 le_minimum_ce_length, // min ce length 5987 le_maximum_ce_length // max ce length 5988 ); 5989 } else 5990 #endif 5991 { 5992 hci_send_cmd(&hci_le_create_connection, 5993 hci_stack->le_connection_scan_interval, // conn scan interval 5994 hci_stack->le_connection_scan_window, // conn scan windows 5995 initiator_filter_policy, // don't use whitelist 5996 address_type, // peer address type 5997 address, // peer bd addr 5998 hci_stack->le_connection_own_addr_type, // our addr type: 5999 hci_stack->le_connection_interval_min, // conn interval min 6000 hci_stack->le_connection_interval_max, // conn interval max 6001 hci_stack->le_connection_latency, // conn latency 6002 hci_stack->le_supervision_timeout, // conn latency 6003 hci_stack->le_minimum_ce_length, // min ce length 6004 hci_stack->le_maximum_ce_length // max ce length 6005 ); 6006 } 6007 } 6008 #endif 6009 6010 #ifdef ENABLE_LE_PERIPHERAL 6011 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6012 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6013 uint8_t operation = 0; 6014 if (pos == 0){ 6015 // first fragment or complete data 6016 operation |= 1; 6017 } 6018 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6019 // last fragment or complete data 6020 operation |= 2; 6021 } 6022 return operation; 6023 } 6024 #endif 6025 #endif 6026 6027 static bool hci_run_general_gap_le(void){ 6028 6029 btstack_linked_list_iterator_t lit; 6030 6031 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6032 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6033 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6034 hci_stack->le_resolvable_private_address_update_s = 0; 6035 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6036 return true; 6037 } 6038 #endif 6039 6040 // Phase 1: collect what to stop 6041 6042 #ifdef ENABLE_LE_CENTRAL 6043 bool scanning_stop = false; 6044 bool connecting_stop = false; 6045 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6046 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6047 bool periodic_sync_stop = false; 6048 #endif 6049 #endif 6050 #endif 6051 6052 #ifdef ENABLE_LE_PERIPHERAL 6053 bool advertising_stop = false; 6054 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6055 le_advertising_set_t * advertising_stop_set = NULL; 6056 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6057 bool periodic_advertising_stop = false; 6058 #endif 6059 #endif 6060 #endif 6061 6062 // check if own address changes 6063 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6064 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6065 6066 // check if whitelist needs modification 6067 bool whitelist_modification_pending = false; 6068 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6069 while (btstack_linked_list_iterator_has_next(&lit)){ 6070 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6071 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6072 whitelist_modification_pending = true; 6073 break; 6074 } 6075 } 6076 6077 // check if resolving list needs modification 6078 bool resolving_list_modification_pending = false; 6079 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6080 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6081 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6082 resolving_list_modification_pending = true; 6083 } 6084 #endif 6085 6086 #ifdef ENABLE_LE_CENTRAL 6087 6088 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6089 // check if periodic advertiser list needs modification 6090 bool periodic_list_modification_pending = false; 6091 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6092 while (btstack_linked_list_iterator_has_next(&lit)){ 6093 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6094 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6095 periodic_list_modification_pending = true; 6096 break; 6097 } 6098 } 6099 #endif 6100 6101 // scanning control 6102 if (hci_stack->le_scanning_active) { 6103 // stop if: 6104 // - parameter change required 6105 // - it's disabled 6106 // - whitelist change required but used for scanning 6107 // - resolving list modified 6108 // - own address changes 6109 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6110 if ((hci_stack->le_scanning_param_update) || 6111 !hci_stack->le_scanning_enabled || 6112 (scanning_uses_whitelist && whitelist_modification_pending) || 6113 resolving_list_modification_pending || 6114 random_address_change){ 6115 6116 scanning_stop = true; 6117 } 6118 } 6119 6120 // connecting control 6121 bool connecting_with_whitelist; 6122 switch (hci_stack->le_connecting_state){ 6123 case LE_CONNECTING_DIRECT: 6124 case LE_CONNECTING_WHITELIST: 6125 // stop connecting if: 6126 // - connecting uses white and whitelist modification pending 6127 // - if it got disabled 6128 // - resolving list modified 6129 // - own address changes 6130 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6131 if ((connecting_with_whitelist && whitelist_modification_pending) || 6132 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6133 resolving_list_modification_pending || 6134 random_address_change) { 6135 6136 connecting_stop = true; 6137 } 6138 break; 6139 default: 6140 break; 6141 } 6142 6143 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6144 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6145 // periodic sync control 6146 bool sync_with_advertiser_list; 6147 switch(hci_stack->le_periodic_sync_state){ 6148 case LE_CONNECTING_DIRECT: 6149 case LE_CONNECTING_WHITELIST: 6150 // stop sync if: 6151 // - sync with advertiser list and advertiser list modification pending 6152 // - if it got disabled 6153 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6154 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6155 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6156 periodic_sync_stop = true; 6157 } 6158 break; 6159 default: 6160 break; 6161 } 6162 #endif 6163 #endif 6164 6165 #endif /* ENABLE_LE_CENTRAL */ 6166 6167 #ifdef ENABLE_LE_PERIPHERAL 6168 // le advertisement control 6169 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6170 // stop if: 6171 // - parameter change required 6172 // - random address used in advertising and changes 6173 // - it's disabled 6174 // - whitelist change required but used for advertisement filter policy 6175 // - resolving list modified 6176 // - own address changes 6177 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6178 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6179 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6180 if (advertising_change || 6181 (advertising_uses_random_address && random_address_change) || 6182 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6183 (advertising_uses_whitelist && whitelist_modification_pending) || 6184 resolving_list_modification_pending || 6185 random_address_change) { 6186 6187 advertising_stop = true; 6188 } 6189 } 6190 6191 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6192 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6193 btstack_linked_list_iterator_t it; 6194 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6195 while (btstack_linked_list_iterator_has_next(&it)){ 6196 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6197 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6198 // stop if: 6199 // - parameter change required 6200 // - random address used in connectable advertising and changes 6201 // - it's disabled 6202 // - whitelist change required but used for advertisement filter policy 6203 // - resolving list modified 6204 // - own address changes 6205 // - advertisement set will be removed 6206 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6207 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6208 bool advertising_uses_random_address = 6209 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6210 advertising_connectable; 6211 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6212 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6213 bool advertising_set_random_address_change = 6214 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6215 bool advertising_set_will_be_removed = 6216 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6217 if (advertising_parameter_change || 6218 (advertising_uses_random_address && advertising_set_random_address_change) || 6219 (advertising_enabled == false) || 6220 (advertising_uses_whitelist && whitelist_modification_pending) || 6221 resolving_list_modification_pending || 6222 advertising_set_will_be_removed) { 6223 6224 advertising_stop = true; 6225 advertising_stop_set = advertising_set; 6226 break; 6227 } 6228 } 6229 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6230 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6231 // stop if: 6232 // - it's disabled 6233 // - parameter change required 6234 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6235 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6236 if ((periodic_enabled == false) || periodic_parameter_change){ 6237 periodic_advertising_stop = true; 6238 advertising_stop_set = advertising_set; 6239 } 6240 } 6241 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6242 } 6243 } 6244 #endif 6245 6246 #endif 6247 6248 6249 // Phase 2: stop everything that should be off during modifications 6250 6251 6252 // 2.1 Outgoing connection 6253 #ifdef ENABLE_LE_CENTRAL 6254 if (connecting_stop){ 6255 hci_send_cmd(&hci_le_create_connection_cancel); 6256 return true; 6257 } 6258 #endif 6259 6260 // 2.2 Scanning 6261 #ifdef ENABLE_LE_CENTRAL 6262 if (scanning_stop){ 6263 hci_stack->le_scanning_active = false; 6264 hci_le_scan_stop(); 6265 return true; 6266 } 6267 6268 // 2.3 Periodic Sync 6269 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6270 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6271 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6272 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6273 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6274 return true; 6275 } 6276 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6277 if (periodic_sync_stop){ 6278 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6279 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6280 return true; 6281 } 6282 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6283 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6284 #endif /* ENABLE_LE_CENTRAL */ 6285 6286 // 2.4 Advertising: legacy, extended, periodic 6287 #ifdef ENABLE_LE_PERIPHERAL 6288 if (advertising_stop){ 6289 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6290 if (hci_extended_advertising_supported()) { 6291 uint8_t advertising_stop_handle; 6292 if (advertising_stop_set != NULL){ 6293 advertising_stop_handle = advertising_stop_set->advertising_handle; 6294 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6295 } else { 6296 advertising_stop_handle = 0; 6297 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6298 } 6299 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6300 const uint16_t durations[] = { 0 }; 6301 const uint16_t max_events[] = { 0 }; 6302 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6303 } else 6304 #endif 6305 { 6306 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6307 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6308 } 6309 return true; 6310 } 6311 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6312 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6313 if (periodic_advertising_stop){ 6314 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6315 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6316 return true; 6317 } 6318 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6319 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6320 #endif /* ENABLE_LE_PERIPHERAL */ 6321 6322 6323 // Phase 3: modify 6324 6325 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6326 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6327 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6328 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6329 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6330 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6331 #endif 6332 return true; 6333 } 6334 6335 #ifdef ENABLE_LE_CENTRAL 6336 if (hci_stack->le_scanning_param_update){ 6337 hci_stack->le_scanning_param_update = false; 6338 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6339 if (hci_extended_advertising_supported()){ 6340 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6341 uint8_t scan_types[2]; 6342 uint16_t scan_intervals[2]; 6343 uint16_t scan_windows[2]; 6344 6345 uint8_t i; 6346 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6347 for (i=0;i<num_phys;i++){ 6348 scan_types[i] = hci_stack->le_scan_type; 6349 scan_intervals[i] = hci_stack->le_scan_interval; 6350 scan_windows[i] = hci_stack->le_scan_window; 6351 } 6352 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6353 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6354 } else 6355 #endif 6356 { 6357 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6358 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6359 } 6360 return true; 6361 } 6362 #endif 6363 6364 #ifdef ENABLE_LE_PERIPHERAL 6365 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6366 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6367 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6368 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6369 if (hci_extended_advertising_supported()){ 6370 // map advertisment type to advertising event properties 6371 uint16_t adv_event_properties = 0; 6372 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6373 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6374 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6375 } 6376 hci_stack->le_advertising_set_in_current_command = 0; 6377 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6378 0, 6379 adv_event_properties, 6380 hci_stack->le_advertisements_interval_min, 6381 hci_stack->le_advertisements_interval_max, 6382 hci_stack->le_advertisements_channel_map, 6383 hci_stack->le_advertisements_own_addr_type, 6384 hci_stack->le_advertisements_direct_address_type, 6385 hci_stack->le_advertisements_direct_address, 6386 hci_stack->le_advertisements_filter_policy, 6387 0x7f, // tx power: no preference 6388 0x01, // primary adv phy: LE 1M 6389 0, // secondary adv max skip 6390 0x01, // secondary adv phy 6391 0, // adv sid 6392 0 // scan request notification 6393 ); 6394 } else 6395 #endif 6396 { 6397 hci_send_cmd(&hci_le_set_advertising_parameters, 6398 hci_stack->le_advertisements_interval_min, 6399 hci_stack->le_advertisements_interval_max, 6400 hci_stack->le_advertisements_type, 6401 hci_stack->le_advertisements_own_addr_type, 6402 hci_stack->le_advertisements_direct_address_type, 6403 hci_stack->le_advertisements_direct_address, 6404 hci_stack->le_advertisements_channel_map, 6405 hci_stack->le_advertisements_filter_policy); 6406 } 6407 return true; 6408 } 6409 6410 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6411 // assumption: only set if extended advertising is supported 6412 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6413 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6414 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6415 return true; 6416 } 6417 #endif 6418 6419 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6420 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6421 uint8_t adv_data_clean[31]; 6422 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6423 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6424 hci_stack->le_advertisements_data_len); 6425 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6426 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6427 if (hci_extended_advertising_supported()){ 6428 hci_stack->le_advertising_set_in_current_command = 0; 6429 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6430 } else 6431 #endif 6432 { 6433 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6434 } 6435 return true; 6436 } 6437 6438 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6439 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6440 uint8_t scan_data_clean[31]; 6441 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6442 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6443 hci_stack->le_scan_response_data_len); 6444 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6445 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6446 if (hci_extended_advertising_supported()){ 6447 hci_stack->le_advertising_set_in_current_command = 0; 6448 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6449 } else 6450 #endif 6451 { 6452 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6453 } 6454 return true; 6455 } 6456 6457 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6458 if (hci_extended_advertising_supported()) { 6459 btstack_linked_list_iterator_t it; 6460 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6461 while (btstack_linked_list_iterator_has_next(&it)){ 6462 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6463 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6464 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6465 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6466 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6467 return true; 6468 } 6469 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6470 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6471 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6472 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6473 advertising_set->advertising_handle, 6474 advertising_set->extended_params.advertising_event_properties, 6475 advertising_set->extended_params.primary_advertising_interval_min, 6476 advertising_set->extended_params.primary_advertising_interval_max, 6477 advertising_set->extended_params.primary_advertising_channel_map, 6478 advertising_set->extended_params.own_address_type, 6479 advertising_set->extended_params.peer_address_type, 6480 advertising_set->extended_params.peer_address, 6481 advertising_set->extended_params.advertising_filter_policy, 6482 advertising_set->extended_params.advertising_tx_power, 6483 advertising_set->extended_params.primary_advertising_phy, 6484 advertising_set->extended_params.secondary_advertising_max_skip, 6485 advertising_set->extended_params.secondary_advertising_phy, 6486 advertising_set->extended_params.advertising_sid, 6487 advertising_set->extended_params.scan_request_notification_enable 6488 ); 6489 return true; 6490 } 6491 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6492 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6493 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6494 return true; 6495 } 6496 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6497 uint16_t pos = advertising_set->adv_data_pos; 6498 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6499 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6500 if ((operation & 0x02) != 0){ 6501 // last fragment or complete data 6502 operation |= 2; 6503 advertising_set->adv_data_pos = 0; 6504 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6505 } else { 6506 advertising_set->adv_data_pos += data_to_upload; 6507 } 6508 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6509 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6510 return true; 6511 } 6512 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6513 uint16_t pos = advertising_set->scan_data_pos; 6514 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6515 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6516 if ((operation & 0x02) != 0){ 6517 advertising_set->scan_data_pos = 0; 6518 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6519 } else { 6520 advertising_set->scan_data_pos += data_to_upload; 6521 } 6522 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6523 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6524 return true; 6525 } 6526 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6527 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6528 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6529 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6530 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6531 advertising_set->advertising_handle, 6532 advertising_set->periodic_params.periodic_advertising_interval_min, 6533 advertising_set->periodic_params.periodic_advertising_interval_max, 6534 advertising_set->periodic_params.periodic_advertising_properties); 6535 return true; 6536 } 6537 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6538 uint16_t pos = advertising_set->periodic_data_pos; 6539 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6540 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6541 if ((operation & 0x02) != 0){ 6542 // last fragment or complete data 6543 operation |= 2; 6544 advertising_set->periodic_data_pos = 0; 6545 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6546 } else { 6547 advertising_set->periodic_data_pos += data_to_upload; 6548 } 6549 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6550 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6551 return true; 6552 } 6553 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6554 } 6555 } 6556 #endif 6557 6558 #endif 6559 6560 #ifdef ENABLE_LE_CENTRAL 6561 // if connect with whitelist was active and is not cancelled yet, wait until next time 6562 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6563 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6564 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6565 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6566 #endif 6567 #endif 6568 6569 // LE Whitelist Management 6570 if (whitelist_modification_pending){ 6571 // add/remove entries 6572 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6573 while (btstack_linked_list_iterator_has_next(&lit)){ 6574 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6575 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6576 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6577 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6578 bd_addr_type_t address_type = entry->address_type; 6579 bd_addr_t address; 6580 memcpy(address, entry->address, 6); 6581 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6582 // remove from whitelist if not scheduled for re-addition 6583 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6584 btstack_memory_whitelist_entry_free(entry); 6585 } 6586 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6587 return true; 6588 } 6589 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6590 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6591 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6592 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6593 return true; 6594 } 6595 } 6596 } 6597 6598 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6599 // LE Resolving List Management 6600 if (resolving_list_supported) { 6601 uint16_t i; 6602 switch (hci_stack->le_resolving_list_state) { 6603 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6604 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6605 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6606 return true; 6607 case LE_RESOLVING_LIST_READ_SIZE: 6608 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6609 hci_send_cmd(&hci_le_read_resolving_list_size); 6610 return true; 6611 case LE_RESOLVING_LIST_SEND_CLEAR: 6612 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6613 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6614 sizeof(hci_stack->le_resolving_list_add_entries)); 6615 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6616 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6617 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6618 sizeof(hci_stack->le_resolving_list_remove_entries)); 6619 hci_send_cmd(&hci_le_clear_resolving_list); 6620 return true; 6621 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6622 // first remove old entries 6623 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6624 uint8_t offset = i >> 3; 6625 uint8_t mask = 1 << (i & 7); 6626 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6627 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6628 bd_addr_t peer_identity_addreses; 6629 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6630 sm_key_t peer_irk; 6631 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6632 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6633 6634 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6635 // trigger whitelist entry 'update' (work around for controller bug) 6636 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6637 while (btstack_linked_list_iterator_has_next(&lit)) { 6638 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6639 if (entry->address_type != peer_identity_addr_type) continue; 6640 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6641 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6642 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6643 } 6644 #endif 6645 6646 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6647 peer_identity_addreses); 6648 return true; 6649 } 6650 6651 // then add new entries 6652 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6653 uint8_t offset = i >> 3; 6654 uint8_t mask = 1 << (i & 7); 6655 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6656 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6657 bd_addr_t peer_identity_addreses; 6658 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6659 sm_key_t peer_irk; 6660 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6661 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6662 if (btstack_is_null(peer_irk, 16)) continue; 6663 const uint8_t *local_irk = gap_get_persistent_irk(); 6664 // command uses format specifier 'P' that stores 16-byte value without flip 6665 uint8_t local_irk_flipped[16]; 6666 uint8_t peer_irk_flipped[16]; 6667 reverse_128(local_irk, local_irk_flipped); 6668 reverse_128(peer_irk, peer_irk_flipped); 6669 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6670 peer_irk_flipped, local_irk_flipped); 6671 return true; 6672 } 6673 6674 // finally, set privacy mode 6675 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6676 uint8_t offset = i >> 3; 6677 uint8_t mask = 1 << (i & 7); 6678 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6679 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6680 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6681 // Network Privacy Mode is default 6682 continue; 6683 } 6684 bd_addr_t peer_identity_address; 6685 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6686 sm_key_t peer_irk; 6687 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6688 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6689 if (btstack_is_null(peer_irk, 16)) continue; 6690 // command uses format specifier 'P' that stores 16-byte value without flip 6691 uint8_t peer_irk_flipped[16]; 6692 reverse_128(peer_irk, peer_irk_flipped); 6693 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6694 return true; 6695 } 6696 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6697 break; 6698 6699 default: 6700 break; 6701 } 6702 } 6703 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6704 #endif 6705 6706 #ifdef ENABLE_LE_CENTRAL 6707 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6708 // LE Whitelist Management 6709 if (periodic_list_modification_pending){ 6710 // add/remove entries 6711 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6712 while (btstack_linked_list_iterator_has_next(&lit)){ 6713 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6714 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6715 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6716 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6717 return true; 6718 } 6719 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6720 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6721 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6722 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6723 return true; 6724 } 6725 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6726 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6727 btstack_memory_periodic_advertiser_list_entry_free(entry); 6728 } 6729 } 6730 } 6731 #endif 6732 #endif 6733 6734 #ifdef ENABLE_LE_CENTRAL 6735 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6736 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6737 if (hci_stack->le_past_set_default_params){ 6738 hci_stack->le_past_set_default_params = false; 6739 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6740 hci_stack->le_past_mode, 6741 hci_stack->le_past_skip, 6742 hci_stack->le_past_sync_timeout, 6743 hci_stack->le_past_cte_type); 6744 return true; 6745 } 6746 #endif 6747 #endif 6748 #endif 6749 6750 // post-pone all actions until stack is fully working 6751 if (hci_stack->state != HCI_STATE_WORKING) return false; 6752 6753 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6754 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6755 6756 // Phase 4: restore state 6757 6758 #ifdef ENABLE_LE_CENTRAL 6759 // re-start scanning 6760 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6761 hci_stack->le_scanning_active = true; 6762 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6763 if (hci_extended_advertising_supported()){ 6764 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6765 } else 6766 #endif 6767 { 6768 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6769 } 6770 return true; 6771 } 6772 #endif 6773 6774 #ifdef ENABLE_LE_CENTRAL 6775 // re-start connecting 6776 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6777 bd_addr_t null_addr; 6778 memset(null_addr, 0, 6); 6779 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6780 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6781 hci_send_le_create_connection(1, 0, null_addr); 6782 return true; 6783 } 6784 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6785 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6786 switch(hci_stack->le_periodic_sync_request){ 6787 case LE_CONNECTING_DIRECT: 6788 case LE_CONNECTING_WHITELIST: 6789 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6790 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6791 hci_stack->le_periodic_sync_options, 6792 hci_stack->le_periodic_sync_advertising_sid, 6793 hci_stack->le_periodic_sync_advertiser_address_type, 6794 hci_stack->le_periodic_sync_advertiser_address, 6795 hci_stack->le_periodic_sync_skip, 6796 hci_stack->le_periodic_sync_timeout, 6797 hci_stack->le_periodic_sync_cte_type); 6798 return true; 6799 default: 6800 break; 6801 } 6802 } 6803 #endif 6804 #endif 6805 6806 #ifdef ENABLE_LE_PERIPHERAL 6807 // re-start advertising 6808 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6809 // check if advertisements should be enabled given 6810 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6811 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6812 6813 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6814 if (hci_extended_advertising_supported()){ 6815 const uint8_t advertising_handles[] = { 0 }; 6816 const uint16_t durations[] = { 0 }; 6817 const uint16_t max_events[] = { 0 }; 6818 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6819 } else 6820 #endif 6821 { 6822 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6823 } 6824 return true; 6825 } 6826 6827 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6828 if (hci_extended_advertising_supported()) { 6829 btstack_linked_list_iterator_t it; 6830 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6831 while (btstack_linked_list_iterator_has_next(&it)) { 6832 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6833 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6834 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6835 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6836 const uint16_t durations[] = { advertising_set->enable_timeout }; 6837 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6838 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6839 return true; 6840 } 6841 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6842 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6843 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6844 uint8_t enable = 1; 6845 if (advertising_set->periodic_include_adi){ 6846 enable |= 2; 6847 } 6848 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6849 return true; 6850 } 6851 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6852 } 6853 } 6854 #endif 6855 #endif 6856 6857 return false; 6858 } 6859 6860 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6861 static bool hci_run_iso_tasks(void){ 6862 btstack_linked_list_iterator_t it; 6863 6864 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6865 return false; 6866 } 6867 6868 // BIG 6869 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6870 while (btstack_linked_list_iterator_has_next(&it)){ 6871 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6872 switch (big->state){ 6873 case LE_AUDIO_BIG_STATE_CREATE: 6874 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6875 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6876 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6877 hci_send_cmd(&hci_le_create_big, 6878 big->params->big_handle, 6879 big->params->advertising_handle, 6880 big->params->num_bis, 6881 big->params->sdu_interval_us, 6882 big->params->max_sdu, 6883 big->params->max_transport_latency_ms, 6884 big->params->rtn, 6885 big->params->phy, 6886 big->params->packing, 6887 big->params->framing, 6888 big->params->encryption, 6889 big->params->broadcast_code); 6890 return true; 6891 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6892 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6893 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); 6894 return true; 6895 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6896 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6897 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6898 return true; 6899 case LE_AUDIO_BIG_STATE_TERMINATE: 6900 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6901 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6902 return true; 6903 default: 6904 break; 6905 } 6906 } 6907 6908 // BIG Sync 6909 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6910 while (btstack_linked_list_iterator_has_next(&it)){ 6911 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6912 switch (big_sync->state){ 6913 case LE_AUDIO_BIG_STATE_CREATE: 6914 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6915 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6916 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6917 hci_send_cmd(&hci_le_big_create_sync, 6918 big_sync->params->big_handle, 6919 big_sync->params->sync_handle, 6920 big_sync->params->encryption, 6921 big_sync->params->broadcast_code, 6922 big_sync->params->mse, 6923 big_sync->params->big_sync_timeout_10ms, 6924 big_sync->params->num_bis, 6925 big_sync->params->bis_indices); 6926 return true; 6927 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6928 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6929 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); 6930 return true; 6931 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6932 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6933 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6934 return true; 6935 case LE_AUDIO_BIG_STATE_TERMINATE: 6936 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6937 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6938 return true; 6939 default: 6940 break; 6941 } 6942 } 6943 6944 // CIG 6945 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6946 while (btstack_linked_list_iterator_has_next(&it)) { 6947 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6948 uint8_t i; 6949 // Set CIG Parameters 6950 uint8_t cis_id[MAX_NR_CIS]; 6951 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6952 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6953 uint8_t phy_c_to_p[MAX_NR_CIS]; 6954 uint8_t phy_p_to_c[MAX_NR_CIS]; 6955 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6956 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6957 switch (cig->state) { 6958 case LE_AUDIO_CIG_STATE_CREATE: 6959 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6960 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6961 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6962 le_audio_cig_params_t * params = cig->params; 6963 for (i = 0; i < params->num_cis; i++) { 6964 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6965 cis_id[i] = cis_params->cis_id; 6966 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6967 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6968 phy_c_to_p[i] = cis_params->phy_c_to_p; 6969 phy_p_to_c[i] = cis_params->phy_p_to_c; 6970 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6971 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6972 } 6973 hci_send_cmd(&hci_le_set_cig_parameters, 6974 cig->cig_id, 6975 params->sdu_interval_c_to_p, 6976 params->sdu_interval_p_to_c, 6977 params->worst_case_sca, 6978 params->packing, 6979 params->framing, 6980 params->max_transport_latency_c_to_p, 6981 params->max_transport_latency_p_to_c, 6982 params->num_cis, 6983 cis_id, 6984 max_sdu_c_to_p, 6985 max_sdu_p_to_c, 6986 phy_c_to_p, 6987 phy_p_to_c, 6988 rtn_c_to_p, 6989 rtn_p_to_c 6990 ); 6991 return true; 6992 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6993 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6994 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6995 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6996 for (i=0;i<cig->num_cis;i++){ 6997 cig->cis_setup_active[i] = true; 6998 } 6999 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7000 return true; 7001 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7002 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7003 // find next path to setup 7004 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7005 if (cig->cis_established[cis_index] == false) { 7006 continue; 7007 } 7008 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7009 bool setup = true; 7010 if (cis_direction == 0){ 7011 // 0 - input - host to controller 7012 // we are central => central to peripheral 7013 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7014 } else { 7015 // 1 - output - controller to host 7016 // we are central => peripheral to central 7017 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7018 } 7019 if (setup){ 7020 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7021 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7022 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7023 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); 7024 return true; 7025 } 7026 cig->state_vars.next_cis++; 7027 } 7028 // emit done 7029 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7030 default: 7031 break; 7032 } 7033 } 7034 7035 // CIS Accept/Reject 7036 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7037 while (btstack_linked_list_iterator_has_next(&it)) { 7038 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7039 hci_con_handle_t con_handle; 7040 switch (iso_stream->state){ 7041 case HCI_ISO_STREAM_W2_ACCEPT: 7042 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7043 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7044 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7045 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7046 return true; 7047 case HCI_ISO_STREAM_W2_REJECT: 7048 con_handle = iso_stream->cis_handle; 7049 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7050 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7051 hci_iso_stream_finalize(iso_stream); 7052 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7053 return true; 7054 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7055 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7056 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7057 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7058 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); 7059 break; 7060 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7061 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7062 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7063 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7064 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); 7065 break; 7066 default: 7067 break; 7068 } 7069 } 7070 7071 return false; 7072 } 7073 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7074 #endif 7075 7076 static bool hci_run_general_pending_commands(void){ 7077 btstack_linked_item_t * it; 7078 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7079 hci_connection_t * connection = (hci_connection_t *) it; 7080 7081 switch(connection->state){ 7082 case SEND_CREATE_CONNECTION: 7083 switch(connection->address_type){ 7084 #ifdef ENABLE_CLASSIC 7085 case BD_ADDR_TYPE_ACL: 7086 log_info("sending hci_create_connection"); 7087 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7088 break; 7089 #endif 7090 default: 7091 #ifdef ENABLE_BLE 7092 #ifdef ENABLE_LE_CENTRAL 7093 log_info("sending hci_le_create_connection"); 7094 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7095 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7096 hci_send_le_create_connection(0, connection->address_type, connection->address); 7097 connection->state = SENT_CREATE_CONNECTION; 7098 #endif 7099 #endif 7100 break; 7101 } 7102 return true; 7103 7104 #ifdef ENABLE_CLASSIC 7105 case RECEIVED_CONNECTION_REQUEST: 7106 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7107 log_info("sending hci_accept_connection_request"); 7108 connection->state = ACCEPTED_CONNECTION_REQUEST; 7109 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7110 return true; 7111 } 7112 break; 7113 #endif 7114 case SEND_DISCONNECT: 7115 connection->state = SENT_DISCONNECT; 7116 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7117 return true; 7118 7119 default: 7120 break; 7121 } 7122 7123 // no further commands if connection is about to get shut down 7124 if (connection->state == SENT_DISCONNECT) continue; 7125 7126 #ifdef ENABLE_CLASSIC 7127 7128 // Handling link key request requires remote supported features 7129 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7130 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7131 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7132 7133 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7134 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7135 if (have_link_key && security_level_sufficient){ 7136 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7137 } else { 7138 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7139 } 7140 return true; 7141 } 7142 7143 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7144 log_info("denying to pin request"); 7145 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7146 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7147 return true; 7148 } 7149 7150 // security assessment requires remote features 7151 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7152 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7153 hci_ssp_assess_security_on_io_cap_request(connection); 7154 // 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 7155 } 7156 7157 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7158 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7159 // set authentication requirements: 7160 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7161 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7162 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7163 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7164 authreq |= 1; 7165 } 7166 bool bonding = hci_stack->bondable; 7167 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7168 // if we have received IO Cap Response, we're in responder role 7169 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7170 if (bonding && !remote_bonding){ 7171 log_info("Remote not bonding, dropping local flag"); 7172 bonding = false; 7173 } 7174 } 7175 if (bonding){ 7176 if (connection->bonding_flags & BONDING_DEDICATED){ 7177 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7178 } else { 7179 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7180 } 7181 } 7182 uint8_t have_oob_data = 0; 7183 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7184 if (connection->classic_oob_c_192 != NULL){ 7185 have_oob_data |= 1; 7186 } 7187 if (connection->classic_oob_c_256 != NULL){ 7188 have_oob_data |= 2; 7189 } 7190 #endif 7191 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7192 return true; 7193 } 7194 7195 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7196 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7197 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7198 return true; 7199 } 7200 7201 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7202 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7203 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7204 const uint8_t zero[16] = { 0 }; 7205 const uint8_t * r_192 = zero; 7206 const uint8_t * c_192 = zero; 7207 const uint8_t * r_256 = zero; 7208 const uint8_t * c_256 = zero; 7209 // verify P-256 OOB 7210 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7211 c_256 = connection->classic_oob_c_256; 7212 if (connection->classic_oob_r_256 != NULL) { 7213 r_256 = connection->classic_oob_r_256; 7214 } 7215 } 7216 // verify P-192 OOB 7217 if ((connection->classic_oob_c_192 != NULL)) { 7218 c_192 = connection->classic_oob_c_192; 7219 if (connection->classic_oob_r_192 != NULL) { 7220 r_192 = connection->classic_oob_r_192; 7221 } 7222 } 7223 7224 // assess security 7225 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7226 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7227 if (need_level_4 && !can_reach_level_4){ 7228 log_info("Level 4 required, but not possible -> abort"); 7229 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7230 // send oob negative reply 7231 c_256 = NULL; 7232 c_192 = NULL; 7233 } 7234 7235 // Reply 7236 if (c_256 != zero) { 7237 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7238 } else if (c_192 != zero){ 7239 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7240 } else { 7241 hci_stack->classic_oob_con_handle = connection->con_handle; 7242 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7243 } 7244 return true; 7245 } 7246 #endif 7247 7248 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7249 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7250 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7251 return true; 7252 } 7253 7254 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7255 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7256 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7257 return true; 7258 } 7259 7260 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7261 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7262 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7263 return true; 7264 } 7265 7266 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7267 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7268 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7269 connection->state = SENT_DISCONNECT; 7270 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7271 return true; 7272 } 7273 7274 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7275 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7276 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7277 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7278 return true; 7279 } 7280 7281 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7282 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7283 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7284 return true; 7285 } 7286 7287 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7288 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7289 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7290 return true; 7291 } 7292 7293 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7294 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7295 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7296 return true; 7297 } 7298 7299 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7300 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7301 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7302 return true; 7303 } 7304 7305 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7306 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7307 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7308 return true; 7309 } 7310 #endif 7311 7312 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7313 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7314 #ifdef ENABLE_CLASSIC 7315 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7316 #endif 7317 if (connection->state != SENT_DISCONNECT){ 7318 connection->state = SENT_DISCONNECT; 7319 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7320 return true; 7321 } 7322 } 7323 7324 #ifdef ENABLE_CLASSIC 7325 uint16_t sniff_min_interval; 7326 switch (connection->sniff_min_interval){ 7327 case 0: 7328 break; 7329 case 0xffff: 7330 connection->sniff_min_interval = 0; 7331 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7332 return true; 7333 default: 7334 sniff_min_interval = connection->sniff_min_interval; 7335 connection->sniff_min_interval = 0; 7336 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7337 return true; 7338 } 7339 7340 if (connection->sniff_subrating_max_latency != 0xffff){ 7341 uint16_t max_latency = connection->sniff_subrating_max_latency; 7342 connection->sniff_subrating_max_latency = 0; 7343 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7344 return true; 7345 } 7346 7347 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7348 uint8_t service_type = (uint8_t) connection->qos_service_type; 7349 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7350 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); 7351 return true; 7352 } 7353 7354 if (connection->request_role != HCI_ROLE_INVALID){ 7355 hci_role_t role = connection->request_role; 7356 connection->request_role = HCI_ROLE_INVALID; 7357 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7358 return true; 7359 } 7360 #endif 7361 7362 if (connection->gap_connection_tasks != 0){ 7363 #ifdef ENABLE_CLASSIC 7364 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7365 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7366 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7367 return true; 7368 } 7369 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7370 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7371 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7372 return true; 7373 } 7374 #endif 7375 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7376 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7377 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7378 return true; 7379 } 7380 #ifdef ENABLE_BLE 7381 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7382 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7383 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7384 return true; 7385 } 7386 #endif 7387 } 7388 7389 #ifdef ENABLE_BLE 7390 switch (connection->le_con_parameter_update_state){ 7391 // response to L2CAP CON PARAMETER UPDATE REQUEST 7392 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7393 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7394 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7395 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7396 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7397 return true; 7398 case CON_PARAMETER_UPDATE_REPLY: 7399 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7400 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7401 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7402 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7403 return true; 7404 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7405 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7406 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7407 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7408 return true; 7409 default: 7410 break; 7411 } 7412 if (connection->le_phy_update_all_phys != 0xffu){ 7413 uint8_t all_phys = connection->le_phy_update_all_phys; 7414 connection->le_phy_update_all_phys = 0xff; 7415 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); 7416 return true; 7417 } 7418 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7419 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7420 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7421 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7422 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7423 return true; 7424 } 7425 if (connection->le_past_advertising_handle != 0xff){ 7426 uint8_t advertising_handle = connection->le_past_advertising_handle; 7427 connection->le_past_advertising_handle = 0xff; 7428 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7429 return true; 7430 } 7431 #endif 7432 #endif 7433 } 7434 return false; 7435 } 7436 7437 static void hci_run(void){ 7438 7439 // stack state sub statemachines 7440 switch (hci_stack->state) { 7441 case HCI_STATE_INITIALIZING: 7442 hci_initializing_run(); 7443 break; 7444 case HCI_STATE_HALTING: 7445 hci_halting_run(); 7446 break; 7447 case HCI_STATE_FALLING_ASLEEP: 7448 hci_falling_asleep_run(); 7449 break; 7450 default: 7451 break; 7452 } 7453 7454 // allow to run after initialization to working transition 7455 if (hci_stack->state != HCI_STATE_WORKING){ 7456 return; 7457 } 7458 7459 bool done; 7460 7461 // send continuation fragments first, as they block the prepared packet buffer 7462 done = hci_run_acl_fragments(); 7463 if (done) return; 7464 7465 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7466 done = hci_run_iso_fragments(); 7467 if (done) return; 7468 #endif 7469 7470 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7471 // send host num completed packets next as they don't require num_cmd_packets > 0 7472 if (!hci_can_send_comand_packet_transport()) return; 7473 if (hci_stack->host_completed_packets){ 7474 hci_host_num_completed_packets(); 7475 return; 7476 } 7477 #endif 7478 7479 if (!hci_can_send_command_packet_now()) return; 7480 7481 // global/non-connection oriented commands 7482 7483 7484 #ifdef ENABLE_CLASSIC 7485 // general gap classic 7486 done = hci_run_general_gap_classic(); 7487 if (done) return; 7488 #endif 7489 7490 #ifdef ENABLE_BLE 7491 // general gap le 7492 done = hci_run_general_gap_le(); 7493 if (done) return; 7494 7495 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7496 // ISO related tasks, e.g. BIG create/terminate/sync 7497 done = hci_run_iso_tasks(); 7498 if (done) return; 7499 #endif 7500 #endif 7501 7502 // send pending HCI commands 7503 hci_run_general_pending_commands(); 7504 } 7505 7506 #ifdef ENABLE_CLASSIC 7507 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7508 // bits 6-9 are 'don't use' 7509 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7510 7511 // restrict packet types to local and remote supported 7512 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7513 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7514 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7515 } 7516 #endif 7517 7518 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7519 // house-keeping 7520 7521 #ifdef ENABLE_CLASSIC 7522 bd_addr_t addr; 7523 hci_connection_t * conn; 7524 #endif 7525 #ifdef ENABLE_LE_CENTRAL 7526 uint8_t initiator_filter_policy; 7527 #endif 7528 7529 uint16_t opcode = little_endian_read_16(packet, 0); 7530 switch (opcode) { 7531 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7532 hci_stack->loopback_mode = packet[3]; 7533 break; 7534 7535 #ifdef ENABLE_CLASSIC 7536 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7537 reverse_bd_addr(&packet[3], addr); 7538 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7539 7540 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7541 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7542 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7543 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7544 } 7545 7546 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7547 if (!conn) { 7548 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7549 if (!conn) { 7550 // notify client that alloc failed 7551 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7552 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7553 } 7554 conn->state = SEND_CREATE_CONNECTION; 7555 } 7556 7557 log_info("conn state %u", conn->state); 7558 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7559 switch (conn->state) { 7560 // if connection active exists 7561 case OPEN: 7562 // and OPEN, emit connection complete command 7563 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7564 // packet not sent to controller 7565 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7566 case RECEIVED_DISCONNECTION_COMPLETE: 7567 // create connection triggered in disconnect complete event, let's do it now 7568 break; 7569 case SEND_CREATE_CONNECTION: 7570 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7571 if (hci_classic_operation_active()){ 7572 return ERROR_CODE_SUCCESS; 7573 } 7574 #endif 7575 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7576 break; 7577 default: 7578 // otherwise, just ignore as it is already in the open process 7579 // packet not sent to controller 7580 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7581 } 7582 conn->state = SENT_CREATE_CONNECTION; 7583 7584 // track outgoing connection 7585 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7586 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7587 break; 7588 7589 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7590 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7591 if (conn == NULL) { 7592 // neither SCO nor ACL connection for con handle 7593 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7594 } else { 7595 uint16_t remote_supported_sco_packets; 7596 switch (conn->address_type){ 7597 case BD_ADDR_TYPE_ACL: 7598 // assert SCO connection does not exit 7599 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7600 return ERROR_CODE_COMMAND_DISALLOWED; 7601 } 7602 // cache remote sco packet types 7603 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7604 7605 // allocate connection struct 7606 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7607 HCI_ROLE_MASTER); 7608 if (!conn) { 7609 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7610 } 7611 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7612 break; 7613 case BD_ADDR_TYPE_SCO: 7614 // update of existing SCO connection 7615 break; 7616 default: 7617 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7618 } 7619 } 7620 7621 // conn refers to hci connection of type sco now 7622 7623 conn->state = SENT_CREATE_CONNECTION; 7624 7625 // track outgoing connection to handle command status with error 7626 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7627 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7628 7629 // setup_synchronous_connection? Voice setting at offset 22 7630 // TODO: compare to current setting if sco connection already active 7631 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7632 7633 // derive sco payload length from packet types 7634 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7635 break; 7636 7637 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7638 // get SCO connection 7639 reverse_bd_addr(&packet[3], addr); 7640 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7641 if (conn == NULL){ 7642 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7643 } 7644 7645 conn->state = ACCEPTED_CONNECTION_REQUEST; 7646 7647 // track outgoing connection to handle command status with error 7648 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7649 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7650 7651 // accept_synchronous_connection? Voice setting at offset 18 7652 // TODO: compare to current setting if sco connection already active 7653 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7654 7655 // derive sco payload length from packet types 7656 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7657 break; 7658 #endif 7659 7660 #ifdef ENABLE_BLE 7661 #ifdef ENABLE_LE_CENTRAL 7662 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7663 // white list used? 7664 initiator_filter_policy = packet[7]; 7665 switch (initiator_filter_policy) { 7666 case 0: 7667 // whitelist not used 7668 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7669 break; 7670 case 1: 7671 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7672 break; 7673 default: 7674 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7675 break; 7676 } 7677 // track outgoing connection 7678 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7679 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7680 break; 7681 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7682 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7683 // white list used? 7684 initiator_filter_policy = packet[3]; 7685 switch (initiator_filter_policy) { 7686 case 0: 7687 // whitelist not used 7688 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7689 break; 7690 case 1: 7691 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7692 break; 7693 default: 7694 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7695 break; 7696 } 7697 // track outgoing connection 7698 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7699 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7700 break; 7701 #endif 7702 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7703 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7704 break; 7705 #endif 7706 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7707 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7708 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7709 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7710 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7711 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7712 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7713 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7714 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7715 case HCI_OPCODE_HCI_LE_READ_PHY: 7716 case HCI_OPCODE_HCI_LE_SET_PHY: 7717 // conection handle is first command parameter 7718 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7719 break; 7720 #endif 7721 #endif /* ENABLE_BLE */ 7722 default: 7723 break; 7724 } 7725 7726 hci_stack->num_cmd_packets--; 7727 7728 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7729 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7730 if (err != 0){ 7731 return ERROR_CODE_HARDWARE_FAILURE; 7732 } 7733 return ERROR_CODE_SUCCESS; 7734 } 7735 7736 // disconnect because of security block 7737 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7738 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7739 if (!connection) return; 7740 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7741 } 7742 7743 7744 // Configure Secure Simple Pairing 7745 7746 #ifdef ENABLE_CLASSIC 7747 7748 // enable will enable SSP during init 7749 void gap_ssp_set_enable(int enable){ 7750 hci_stack->ssp_enable = enable; 7751 } 7752 7753 static int hci_local_ssp_activated(void){ 7754 return gap_ssp_supported() && hci_stack->ssp_enable; 7755 } 7756 7757 // if set, BTstack will respond to io capability request using authentication requirement 7758 void gap_ssp_set_io_capability(int io_capability){ 7759 hci_stack->ssp_io_capability = io_capability; 7760 } 7761 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7762 hci_stack->ssp_authentication_requirement = authentication_requirement; 7763 } 7764 7765 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7766 void gap_ssp_set_auto_accept(int auto_accept){ 7767 hci_stack->ssp_auto_accept = auto_accept; 7768 } 7769 7770 void gap_secure_connections_enable(bool enable){ 7771 hci_stack->secure_connections_enable = enable; 7772 } 7773 bool gap_secure_connections_active(void){ 7774 return hci_stack->secure_connections_active; 7775 } 7776 7777 #endif 7778 7779 // va_list part of hci_send_cmd 7780 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7781 if (!hci_can_send_command_packet_now()){ 7782 log_error("hci_send_cmd called but cannot send packet now"); 7783 return ERROR_CODE_COMMAND_DISALLOWED; 7784 } 7785 7786 // for HCI INITIALIZATION 7787 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7788 hci_stack->last_cmd_opcode = cmd->opcode; 7789 7790 hci_reserve_packet_buffer(); 7791 uint8_t * packet = hci_stack->hci_packet_buffer; 7792 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7793 uint8_t status = hci_send_cmd_packet(packet, size); 7794 7795 // release packet buffer on error or for synchronous transport implementations 7796 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7797 hci_release_packet_buffer(); 7798 hci_emit_transport_packet_sent(); 7799 } 7800 7801 return status; 7802 } 7803 7804 /** 7805 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7806 */ 7807 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7808 va_list argptr; 7809 va_start(argptr, cmd); 7810 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7811 va_end(argptr); 7812 return status; 7813 } 7814 7815 // Create various non-HCI events. 7816 // TODO: generalize, use table similar to hci_create_command 7817 7818 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7819 // dump packet 7820 if (dump) { 7821 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7822 } 7823 7824 // dispatch to all event handlers 7825 btstack_linked_list_iterator_t it; 7826 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7827 while (btstack_linked_list_iterator_has_next(&it)){ 7828 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7829 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7830 } 7831 } 7832 7833 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7834 if (!hci_stack->acl_packet_handler) return; 7835 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7836 } 7837 7838 #ifdef ENABLE_CLASSIC 7839 static void hci_notify_if_sco_can_send_now(void){ 7840 // notify SCO sender if waiting 7841 if (!hci_stack->sco_waiting_for_can_send_now) return; 7842 if (hci_can_send_sco_packet_now()){ 7843 hci_stack->sco_waiting_for_can_send_now = 0; 7844 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7845 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7846 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7847 } 7848 } 7849 7850 // parsing end emitting has been merged to reduce code size 7851 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7852 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7853 7854 uint8_t * eir_data; 7855 ad_context_t context; 7856 const uint8_t * name; 7857 uint8_t name_len; 7858 7859 if (size < 3) return; 7860 7861 int event_type = hci_event_packet_get_type(packet); 7862 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7863 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7864 7865 switch (event_type){ 7866 case HCI_EVENT_INQUIRY_RESULT: 7867 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7868 if (size != (3 + (num_responses * 14))) return; 7869 break; 7870 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7871 if (size != 257) return; 7872 if (num_responses != 1) return; 7873 break; 7874 default: 7875 return; 7876 } 7877 7878 // event[1] is set at the end 7879 int i; 7880 for (i=0; i<num_responses;i++){ 7881 memset(event, 0, sizeof(event)); 7882 event[0] = GAP_EVENT_INQUIRY_RESULT; 7883 uint8_t event_size = 27; // if name is not set by EIR 7884 7885 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7886 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7887 (void)memcpy(&event[9], 7888 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7889 3); // class of device 7890 (void)memcpy(&event[12], 7891 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7892 2); // clock offset 7893 7894 switch (event_type){ 7895 case HCI_EVENT_INQUIRY_RESULT: 7896 // 14,15,16,17 = 0, size 18 7897 break; 7898 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7899 event[14] = 1; 7900 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7901 // 16,17 = 0, size 18 7902 break; 7903 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7904 event[14] = 1; 7905 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7906 // EIR packets only contain a single inquiry response 7907 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7908 name = NULL; 7909 // Iterate over EIR data 7910 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7911 uint8_t data_type = ad_iterator_get_data_type(&context); 7912 uint8_t data_size = ad_iterator_get_data_len(&context); 7913 const uint8_t * data = ad_iterator_get_data(&context); 7914 // Prefer Complete Local Name over Shortened Local Name 7915 switch (data_type){ 7916 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7917 if (name) continue; 7918 /* fall through */ 7919 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7920 name = data; 7921 name_len = data_size; 7922 break; 7923 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7924 if (data_size != 8) break; 7925 event[16] = 1; 7926 memcpy(&event[17], data, 8); 7927 break; 7928 default: 7929 break; 7930 } 7931 } 7932 if (name){ 7933 event[25] = 1; 7934 // truncate name if needed 7935 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7936 event[26] = len; 7937 (void)memcpy(&event[27], name, len); 7938 event_size += len; 7939 } 7940 break; 7941 default: 7942 return; 7943 } 7944 event[1] = event_size - 2; 7945 hci_emit_event(event, event_size, 1); 7946 } 7947 } 7948 #endif 7949 7950 void hci_emit_state(void){ 7951 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7952 uint8_t event[3]; 7953 event[0] = BTSTACK_EVENT_STATE; 7954 event[1] = sizeof(event) - 2u; 7955 event[2] = hci_stack->state; 7956 hci_emit_event(event, sizeof(event), 1); 7957 } 7958 7959 #ifdef ENABLE_CLASSIC 7960 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7961 uint8_t event[13]; 7962 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7963 event[1] = sizeof(event) - 2; 7964 event[2] = status; 7965 little_endian_store_16(event, 3, con_handle); 7966 reverse_bd_addr(address, &event[5]); 7967 event[11] = 1; // ACL connection 7968 event[12] = 0; // encryption disabled 7969 hci_emit_event(event, sizeof(event), 1); 7970 } 7971 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7972 if (disable_l2cap_timeouts) return; 7973 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7974 uint8_t event[4]; 7975 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7976 event[1] = sizeof(event) - 2; 7977 little_endian_store_16(event, 2, conn->con_handle); 7978 hci_emit_event(event, sizeof(event), 1); 7979 } 7980 #endif 7981 7982 #ifdef ENABLE_BLE 7983 #ifdef ENABLE_LE_CENTRAL 7984 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){ 7985 uint8_t hci_event[21]; 7986 hci_event[0] = HCI_EVENT_LE_META; 7987 hci_event[1] = sizeof(hci_event) - 2u; 7988 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7989 hci_event[3] = status; 7990 little_endian_store_16(hci_event, 4, con_handle); 7991 hci_event[6] = 0; // TODO: role 7992 hci_event[7] = address_type; 7993 reverse_bd_addr(address, &hci_event[8]); 7994 little_endian_store_16(hci_event, 14, 0); // interval 7995 little_endian_store_16(hci_event, 16, 0); // latency 7996 little_endian_store_16(hci_event, 18, 0); // supervision timeout 7997 hci_event[20] = 0; // master clock accuracy 7998 hci_emit_event(hci_event, sizeof(hci_event), 1); 7999 // emit GAP event, too 8000 uint8_t gap_event[36]; 8001 hci_create_gap_connection_complete_event(hci_event, gap_event); 8002 hci_emit_event(gap_event, sizeof(gap_event), 1); 8003 } 8004 #endif 8005 #endif 8006 8007 static void hci_emit_transport_packet_sent(void){ 8008 // notify upper stack that it might be possible to send again 8009 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8010 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8011 } 8012 8013 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8014 uint8_t event[6]; 8015 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8016 event[1] = sizeof(event) - 2u; 8017 event[2] = 0; // status = OK 8018 little_endian_store_16(event, 3, con_handle); 8019 event[5] = reason; 8020 hci_emit_event(event, sizeof(event), 1); 8021 } 8022 8023 static void hci_emit_nr_connections_changed(void){ 8024 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8025 uint8_t event[3]; 8026 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8027 event[1] = sizeof(event) - 2u; 8028 event[2] = nr_hci_connections(); 8029 hci_emit_event(event, sizeof(event), 1); 8030 } 8031 8032 static void hci_emit_hci_open_failed(void){ 8033 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8034 uint8_t event[2]; 8035 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8036 event[1] = sizeof(event) - 2u; 8037 hci_emit_event(event, sizeof(event), 1); 8038 } 8039 8040 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8041 log_info("hci_emit_dedicated_bonding_result %u ", status); 8042 uint8_t event[9]; 8043 int pos = 0; 8044 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8045 event[pos++] = sizeof(event) - 2u; 8046 event[pos++] = status; 8047 reverse_bd_addr(address, &event[pos]); 8048 hci_emit_event(event, sizeof(event), 1); 8049 } 8050 8051 8052 #ifdef ENABLE_CLASSIC 8053 8054 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8055 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8056 uint8_t event[5]; 8057 int pos = 0; 8058 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8059 event[pos++] = sizeof(event) - 2; 8060 little_endian_store_16(event, 2, con_handle); 8061 pos += 2; 8062 event[pos++] = level; 8063 hci_emit_event(event, sizeof(event), 1); 8064 } 8065 8066 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8067 if (!connection) return LEVEL_0; 8068 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8069 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8070 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8071 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8072 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8073 // LEVEL 4 always requires 128 bit encrytion key size 8074 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8075 security_level = LEVEL_3; 8076 } 8077 return security_level; 8078 } 8079 8080 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8081 uint8_t event[4]; 8082 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8083 event[1] = sizeof(event) - 2; 8084 event[2] = discoverable; 8085 event[3] = connectable; 8086 hci_emit_event(event, sizeof(event), 1); 8087 } 8088 8089 // query if remote side supports eSCO 8090 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8091 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8092 if (!connection) return false; 8093 return (connection->remote_supported_features[0] & 1) != 0; 8094 } 8095 8096 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8097 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8098 if (!connection) return 0; 8099 return connection->remote_supported_sco_packets; 8100 } 8101 8102 static bool hci_ssp_supported(hci_connection_t * connection){ 8103 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8104 return (connection->bonding_flags & mask) == mask; 8105 } 8106 8107 // query if remote side supports SSP 8108 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8109 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8110 if (!connection) return false; 8111 return hci_ssp_supported(connection) ? 1 : 0; 8112 } 8113 8114 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8115 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8116 } 8117 8118 /** 8119 * Check if remote supported features query has completed 8120 */ 8121 bool hci_remote_features_available(hci_con_handle_t handle){ 8122 hci_connection_t * connection = hci_connection_for_handle(handle); 8123 if (!connection) return false; 8124 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8125 } 8126 8127 /** 8128 * Trigger remote supported features query 8129 */ 8130 8131 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8132 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8133 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8134 } 8135 } 8136 8137 void hci_remote_features_query(hci_con_handle_t con_handle){ 8138 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8139 if (!connection) return; 8140 hci_trigger_remote_features_for_connection(connection); 8141 hci_run(); 8142 } 8143 8144 // GAP API 8145 /** 8146 * @bbrief enable/disable bonding. default is enabled 8147 * @praram enabled 8148 */ 8149 void gap_set_bondable_mode(int enable){ 8150 hci_stack->bondable = enable ? 1 : 0; 8151 } 8152 /** 8153 * @brief Get bondable mode. 8154 * @return 1 if bondable 8155 */ 8156 int gap_get_bondable_mode(void){ 8157 return hci_stack->bondable; 8158 } 8159 8160 /** 8161 * @brief map link keys to security levels 8162 */ 8163 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8164 switch (link_key_type){ 8165 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8166 return LEVEL_4; 8167 case COMBINATION_KEY: 8168 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8169 return LEVEL_3; 8170 default: 8171 return LEVEL_2; 8172 } 8173 } 8174 8175 /** 8176 * @brief map link keys to secure connection yes/no 8177 */ 8178 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8179 switch (link_key_type){ 8180 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8181 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8182 return true; 8183 default: 8184 return false; 8185 } 8186 } 8187 8188 /** 8189 * @brief map link keys to authenticated 8190 */ 8191 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8192 switch (link_key_type){ 8193 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8194 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8195 return true; 8196 default: 8197 return false; 8198 } 8199 } 8200 8201 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8202 log_info("gap_mitm_protection_required_for_security_level %u", level); 8203 return level > LEVEL_2; 8204 } 8205 8206 /** 8207 * @brief get current security level 8208 */ 8209 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8210 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8211 if (!connection) return LEVEL_0; 8212 return gap_security_level_for_connection(connection); 8213 } 8214 8215 /** 8216 * @brief request connection to device to 8217 * @result GAP_AUTHENTICATION_RESULT 8218 */ 8219 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8220 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8221 if (!connection){ 8222 hci_emit_security_level(con_handle, LEVEL_0); 8223 return; 8224 } 8225 8226 btstack_assert(hci_is_le_connection(connection) == false); 8227 8228 // 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) 8229 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8230 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8231 requested_level = LEVEL_4; 8232 } 8233 8234 gap_security_level_t current_level = gap_security_level(con_handle); 8235 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8236 requested_level, connection->requested_security_level, current_level); 8237 8238 // authentication active if authentication request was sent or planned level > 0 8239 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8240 if (authentication_active){ 8241 // authentication already active 8242 if (connection->requested_security_level < requested_level){ 8243 // increase requested level as new level is higher 8244 // TODO: handle re-authentication when done 8245 connection->requested_security_level = requested_level; 8246 } 8247 } else { 8248 // no request active, notify if security sufficient 8249 if (requested_level <= current_level){ 8250 hci_emit_security_level(con_handle, current_level); 8251 return; 8252 } 8253 8254 // store request 8255 connection->requested_security_level = requested_level; 8256 8257 // start to authenticate connection 8258 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8259 8260 // request remote features if not already active, also trigger hci_run 8261 hci_remote_features_query(con_handle); 8262 } 8263 } 8264 8265 /** 8266 * @brief start dedicated bonding with device. disconnect after bonding 8267 * @param device 8268 * @param request MITM protection 8269 * @result GAP_DEDICATED_BONDING_COMPLETE 8270 */ 8271 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8272 8273 // create connection state machine 8274 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8275 8276 if (!connection){ 8277 return BTSTACK_MEMORY_ALLOC_FAILED; 8278 } 8279 8280 // delete link key 8281 gap_drop_link_key_for_bd_addr(device); 8282 8283 // configure LEVEL_2/3, dedicated bonding 8284 connection->state = SEND_CREATE_CONNECTION; 8285 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8286 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8287 connection->bonding_flags = BONDING_DEDICATED; 8288 8289 hci_run(); 8290 8291 return 0; 8292 } 8293 8294 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8295 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8296 if (connection == NULL){ 8297 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8298 } 8299 if (defer){ 8300 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8301 } else { 8302 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8303 // trigger disconnect 8304 hci_run(); 8305 } 8306 return ERROR_CODE_SUCCESS; 8307 } 8308 8309 void gap_set_local_name(const char * local_name){ 8310 hci_stack->local_name = local_name; 8311 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8312 // also update EIR if not set by user 8313 if (hci_stack->eir_data == NULL){ 8314 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8315 } 8316 hci_run(); 8317 } 8318 #endif 8319 8320 8321 #ifdef ENABLE_BLE 8322 8323 #ifdef ENABLE_LE_CENTRAL 8324 void gap_start_scan(void){ 8325 hci_stack->le_scanning_enabled = true; 8326 hci_run(); 8327 } 8328 8329 void gap_stop_scan(void){ 8330 hci_stack->le_scanning_enabled = false; 8331 hci_run(); 8332 } 8333 8334 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8335 hci_stack->le_scan_type = scan_type; 8336 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8337 hci_stack->le_scan_interval = scan_interval; 8338 hci_stack->le_scan_window = scan_window; 8339 hci_stack->le_scanning_param_update = true; 8340 hci_run(); 8341 } 8342 8343 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8344 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8345 } 8346 8347 void gap_set_scan_duplicate_filter(bool enabled){ 8348 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8349 } 8350 8351 void gap_set_scan_phys(uint8_t phys){ 8352 // LE Coded and LE 1M PHY 8353 hci_stack->le_scan_phys = phys & 0x05; 8354 } 8355 8356 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8357 // disallow le connection if outgoing already active 8358 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8359 log_error("le connect already active"); 8360 return ERROR_CODE_COMMAND_DISALLOWED; 8361 } 8362 8363 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8364 if (conn == NULL) { 8365 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8366 if (conn == false){ 8367 // alloc failed 8368 log_info("gap_connect: failed to alloc hci_connection_t"); 8369 return BTSTACK_MEMORY_ALLOC_FAILED; 8370 } 8371 } else { 8372 switch (conn->state) { 8373 case RECEIVED_DISCONNECTION_COMPLETE: 8374 // connection was just disconnected, reset state and allow re-connect 8375 conn->role = HCI_ROLE_MASTER; 8376 break; 8377 default: 8378 return ERROR_CODE_COMMAND_DISALLOWED; 8379 } 8380 } 8381 8382 // set le connecting state 8383 if (hci_is_le_connection_type(addr_type)){ 8384 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8385 } 8386 8387 // trigger connect 8388 log_info("gap_connect: send create connection next"); 8389 conn->state = SEND_CREATE_CONNECTION; 8390 hci_run(); 8391 return ERROR_CODE_SUCCESS; 8392 } 8393 8394 // @assumption: only a single outgoing LE Connection exists 8395 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8396 btstack_linked_item_t *it; 8397 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8398 hci_connection_t * conn = (hci_connection_t *) it; 8399 if (hci_is_le_connection(conn)){ 8400 switch (conn->state){ 8401 case SEND_CREATE_CONNECTION: 8402 case SENT_CREATE_CONNECTION: 8403 return conn; 8404 default: 8405 break; 8406 }; 8407 } 8408 } 8409 return NULL; 8410 } 8411 8412 uint8_t gap_connect_cancel(void){ 8413 hci_connection_t * conn; 8414 switch (hci_stack->le_connecting_request){ 8415 case LE_CONNECTING_IDLE: 8416 break; 8417 case LE_CONNECTING_WHITELIST: 8418 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8419 hci_run(); 8420 break; 8421 case LE_CONNECTING_DIRECT: 8422 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8423 conn = gap_get_outgoing_le_connection(); 8424 if (conn == NULL){ 8425 hci_run(); 8426 } else { 8427 switch (conn->state){ 8428 case SEND_CREATE_CONNECTION: 8429 // skip sending create connection and emit event instead 8430 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8431 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8432 btstack_memory_hci_connection_free( conn ); 8433 break; 8434 case SENT_CREATE_CONNECTION: 8435 // let hci_run_general_gap_le cancel outgoing connection 8436 hci_run(); 8437 break; 8438 default: 8439 break; 8440 } 8441 } 8442 break; 8443 default: 8444 btstack_unreachable(); 8445 break; 8446 } 8447 return ERROR_CODE_SUCCESS; 8448 } 8449 8450 /** 8451 * @brief Set connection parameters for outgoing connections 8452 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8453 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8454 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8455 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8456 * @param conn_latency, default: 4 8457 * @param supervision_timeout (unit: 10ms), default: 720 ms 8458 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8459 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8460 */ 8461 8462 void gap_set_connection_phys(uint8_t phys){ 8463 // LE Coded, LE 1M, LE 2M PHY 8464 hci_stack->le_connection_phys = phys & 7; 8465 } 8466 8467 #endif 8468 8469 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8470 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8471 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8472 hci_stack->le_connection_scan_interval = conn_scan_interval; 8473 hci_stack->le_connection_scan_window = conn_scan_window; 8474 hci_stack->le_connection_interval_min = conn_interval_min; 8475 hci_stack->le_connection_interval_max = conn_interval_max; 8476 hci_stack->le_connection_latency = conn_latency; 8477 hci_stack->le_supervision_timeout = supervision_timeout; 8478 hci_stack->le_minimum_ce_length = min_ce_length; 8479 hci_stack->le_maximum_ce_length = max_ce_length; 8480 } 8481 8482 /** 8483 * @brief Updates the connection parameters for a given LE connection 8484 * @param handle 8485 * @param conn_interval_min (unit: 1.25ms) 8486 * @param conn_interval_max (unit: 1.25ms) 8487 * @param conn_latency 8488 * @param supervision_timeout (unit: 10ms) 8489 * @return 0 if ok 8490 */ 8491 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8492 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8493 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8494 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8495 connection->le_conn_interval_min = conn_interval_min; 8496 connection->le_conn_interval_max = conn_interval_max; 8497 connection->le_conn_latency = conn_latency; 8498 connection->le_supervision_timeout = supervision_timeout; 8499 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8500 hci_run(); 8501 return 0; 8502 } 8503 8504 /** 8505 * @brief Request an update of the connection parameter for a given LE connection 8506 * @param handle 8507 * @param conn_interval_min (unit: 1.25ms) 8508 * @param conn_interval_max (unit: 1.25ms) 8509 * @param conn_latency 8510 * @param supervision_timeout (unit: 10ms) 8511 * @return 0 if ok 8512 */ 8513 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8514 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8515 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8516 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8517 connection->le_conn_interval_min = conn_interval_min; 8518 connection->le_conn_interval_max = conn_interval_max; 8519 connection->le_conn_latency = conn_latency; 8520 connection->le_supervision_timeout = supervision_timeout; 8521 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8522 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8523 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8524 return 0; 8525 } 8526 8527 #ifdef ENABLE_LE_PERIPHERAL 8528 8529 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8530 static void hci_assert_advertisement_set_0_ready(void){ 8531 // force advertising set creation for legacy LE Advertising 8532 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8533 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8534 } 8535 } 8536 #endif 8537 8538 /** 8539 * @brief Set Advertisement Data 8540 * @param advertising_data_length 8541 * @param advertising_data (max 31 octets) 8542 * @note data is not copied, pointer has to stay valid 8543 */ 8544 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8545 hci_stack->le_advertisements_data_len = advertising_data_length; 8546 hci_stack->le_advertisements_data = advertising_data; 8547 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8548 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8549 hci_assert_advertisement_set_0_ready(); 8550 #endif 8551 hci_run(); 8552 } 8553 8554 /** 8555 * @brief Set Scan Response Data 8556 * @param advertising_data_length 8557 * @param advertising_data (max 31 octets) 8558 * @note data is not copied, pointer has to stay valid 8559 */ 8560 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8561 hci_stack->le_scan_response_data_len = scan_response_data_length; 8562 hci_stack->le_scan_response_data = scan_response_data; 8563 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8564 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8565 hci_assert_advertisement_set_0_ready(); 8566 #endif 8567 hci_run(); 8568 } 8569 8570 /** 8571 * @brief Set Advertisement Parameters 8572 * @param adv_int_min 8573 * @param adv_int_max 8574 * @param adv_type 8575 * @param direct_address_type 8576 * @param direct_address 8577 * @param channel_map 8578 * @param filter_policy 8579 * 8580 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8581 */ 8582 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8583 uint8_t direct_address_typ, bd_addr_t direct_address, 8584 uint8_t channel_map, uint8_t filter_policy) { 8585 8586 hci_stack->le_advertisements_interval_min = adv_int_min; 8587 hci_stack->le_advertisements_interval_max = adv_int_max; 8588 hci_stack->le_advertisements_type = adv_type; 8589 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8590 hci_stack->le_advertisements_channel_map = channel_map; 8591 hci_stack->le_advertisements_filter_policy = filter_policy; 8592 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8593 6); 8594 8595 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8596 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8597 hci_run(); 8598 } 8599 8600 /** 8601 * @brief Enable/Disable Advertisements 8602 * @param enabled 8603 */ 8604 void gap_advertisements_enable(int enabled){ 8605 if (enabled == 0){ 8606 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8607 } else { 8608 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8609 } 8610 hci_update_advertisements_enabled_for_current_roles(); 8611 hci_run(); 8612 } 8613 8614 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8615 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8616 btstack_linked_list_iterator_t it; 8617 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8618 while (btstack_linked_list_iterator_has_next(&it)){ 8619 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8620 if ( item->advertising_handle == advertising_handle ) { 8621 return item; 8622 } 8623 } 8624 return NULL; 8625 } 8626 8627 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8628 hci_stack->le_resolvable_private_address_update_s = update_s; 8629 hci_run(); 8630 return ERROR_CODE_SUCCESS; 8631 } 8632 8633 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8634 // find free advertisement handle 8635 uint8_t advertisement_handle; 8636 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8637 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8638 } 8639 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8640 // clear 8641 memset(storage, 0, sizeof(le_advertising_set_t)); 8642 // copy params 8643 storage->advertising_handle = advertisement_handle; 8644 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8645 // add to list 8646 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8647 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8648 *out_advertising_handle = advertisement_handle; 8649 // set tasks and start 8650 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8651 hci_run(); 8652 return ERROR_CODE_SUCCESS; 8653 } 8654 8655 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8656 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8657 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8658 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8659 // set tasks and start 8660 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8661 hci_run(); 8662 return ERROR_CODE_SUCCESS; 8663 } 8664 8665 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8666 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8667 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8668 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8669 return ERROR_CODE_SUCCESS; 8670 } 8671 8672 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8673 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8674 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8675 memcpy(advertising_set->random_address, random_address, 6); 8676 // set tasks and start 8677 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8678 hci_run(); 8679 return ERROR_CODE_SUCCESS; 8680 } 8681 8682 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8683 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8684 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8685 advertising_set->adv_data = advertising_data; 8686 advertising_set->adv_data_len = advertising_data_length; 8687 // set tasks and start 8688 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8689 hci_run(); 8690 return ERROR_CODE_SUCCESS; 8691 } 8692 8693 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){ 8694 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8695 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8696 advertising_set->scan_data = scan_response_data; 8697 advertising_set->scan_data_len = scan_response_data_length; 8698 // set tasks and start 8699 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8700 hci_run(); 8701 return ERROR_CODE_SUCCESS; 8702 } 8703 8704 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8705 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8706 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8707 advertising_set->enable_timeout = timeout; 8708 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8709 // set tasks and start 8710 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8711 hci_run(); 8712 return ERROR_CODE_SUCCESS; 8713 } 8714 8715 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8716 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8717 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8718 // set tasks and start 8719 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8720 hci_run(); 8721 return ERROR_CODE_SUCCESS; 8722 } 8723 8724 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8725 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8726 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8727 // set tasks and start 8728 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8729 hci_run(); 8730 return ERROR_CODE_SUCCESS; 8731 } 8732 8733 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8734 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8735 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8736 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8737 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8738 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8739 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8740 // set tasks and start 8741 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8742 hci_run(); 8743 return ERROR_CODE_SUCCESS; 8744 } 8745 8746 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8747 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8748 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8749 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8750 return ERROR_CODE_SUCCESS; 8751 } 8752 8753 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8754 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8755 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8756 advertising_set->periodic_data = periodic_data; 8757 advertising_set->periodic_data_len = periodic_data_length; 8758 // set tasks and start 8759 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8760 hci_run(); 8761 return ERROR_CODE_SUCCESS; 8762 } 8763 8764 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8765 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8766 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8767 // set tasks and start 8768 advertising_set->periodic_include_adi = include_adi; 8769 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8770 hci_run(); 8771 return ERROR_CODE_SUCCESS; 8772 } 8773 8774 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8775 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8776 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8777 // set tasks and start 8778 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8779 hci_run(); 8780 return ERROR_CODE_SUCCESS; 8781 } 8782 8783 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8784 hci_stack->le_past_mode = mode; 8785 hci_stack->le_past_skip = skip; 8786 hci_stack->le_past_sync_timeout = sync_timeout; 8787 hci_stack->le_past_cte_type = cte_type; 8788 hci_stack->le_past_set_default_params = true; 8789 hci_run(); 8790 return ERROR_CODE_SUCCESS; 8791 } 8792 8793 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8794 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8795 if (hci_connection == NULL){ 8796 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8797 } 8798 hci_connection->le_past_sync_handle = sync_handle; 8799 hci_connection->le_past_service_data = service_data; 8800 hci_run(); 8801 return ERROR_CODE_SUCCESS; 8802 } 8803 8804 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8805 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8806 if (hci_connection == NULL){ 8807 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8808 } 8809 hci_connection->le_past_advertising_handle = advertising_handle; 8810 hci_connection->le_past_service_data = service_data; 8811 hci_run(); 8812 return ERROR_CODE_SUCCESS; 8813 } 8814 8815 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8816 8817 #endif 8818 8819 #endif 8820 8821 void hci_le_set_own_address_type(uint8_t own_address_type){ 8822 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8823 if (own_address_type == hci_stack->le_own_addr_type) return; 8824 hci_stack->le_own_addr_type = own_address_type; 8825 8826 #ifdef ENABLE_LE_PERIPHERAL 8827 // update advertisement parameters, too 8828 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8829 hci_run(); 8830 #endif 8831 #ifdef ENABLE_LE_CENTRAL 8832 // note: we don't update scan parameters or modify ongoing connection attempts 8833 #endif 8834 } 8835 8836 void hci_le_random_address_set(const bd_addr_t random_address){ 8837 memcpy(hci_stack->le_random_address, random_address, 6); 8838 hci_stack->le_random_address_set = true; 8839 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8840 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8841 if (hci_extended_advertising_supported()){ 8842 hci_assert_advertisement_set_0_ready(); 8843 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8844 } 8845 #endif 8846 hci_run(); 8847 } 8848 8849 #endif 8850 8851 uint8_t gap_disconnect(hci_con_handle_t handle){ 8852 hci_connection_t * conn = hci_connection_for_handle(handle); 8853 if (!conn){ 8854 hci_emit_disconnection_complete(handle, 0); 8855 return 0; 8856 } 8857 // ignore if already disconnected 8858 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8859 return 0; 8860 } 8861 conn->state = SEND_DISCONNECT; 8862 hci_run(); 8863 return 0; 8864 } 8865 8866 int gap_read_rssi(hci_con_handle_t con_handle){ 8867 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8868 if (hci_connection == NULL) return 0; 8869 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8870 hci_run(); 8871 return 1; 8872 } 8873 8874 /** 8875 * @brief Get connection type 8876 * @param con_handle 8877 * @result connection_type 8878 */ 8879 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8880 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8881 if (!conn) return GAP_CONNECTION_INVALID; 8882 switch (conn->address_type){ 8883 case BD_ADDR_TYPE_LE_PUBLIC: 8884 case BD_ADDR_TYPE_LE_RANDOM: 8885 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8886 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8887 return GAP_CONNECTION_LE; 8888 case BD_ADDR_TYPE_SCO: 8889 return GAP_CONNECTION_SCO; 8890 case BD_ADDR_TYPE_ACL: 8891 return GAP_CONNECTION_ACL; 8892 default: 8893 return GAP_CONNECTION_INVALID; 8894 } 8895 } 8896 8897 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8898 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8899 if (!conn) return HCI_ROLE_INVALID; 8900 return (hci_role_t) conn->role; 8901 } 8902 8903 8904 #ifdef ENABLE_CLASSIC 8905 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8906 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8907 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8908 conn->request_role = role; 8909 hci_run(); 8910 return ERROR_CODE_SUCCESS; 8911 } 8912 #endif 8913 8914 #ifdef ENABLE_BLE 8915 8916 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){ 8917 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8918 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8919 8920 conn->le_phy_update_all_phys = all_phys; 8921 conn->le_phy_update_tx_phys = tx_phys; 8922 conn->le_phy_update_rx_phys = rx_phys; 8923 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8924 8925 hci_run(); 8926 8927 return 0; 8928 } 8929 8930 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8931 8932 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 8933 // incorrect configuration: 8934 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 8935 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 8936 btstack_assert(false); 8937 #endif 8938 8939 // check if already in list 8940 btstack_linked_list_iterator_t it; 8941 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8942 while (btstack_linked_list_iterator_has_next(&it)) { 8943 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8944 if (entry->address_type != address_type) { 8945 continue; 8946 } 8947 if (memcmp(entry->address, address, 6) != 0) { 8948 continue; 8949 } 8950 8951 // if already on controller: 8952 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8953 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8954 // drop remove request 8955 entry->state = LE_WHITELIST_ON_CONTROLLER; 8956 return ERROR_CODE_SUCCESS; 8957 } else { 8958 // disallow as already on controller 8959 return ERROR_CODE_COMMAND_DISALLOWED; 8960 } 8961 } 8962 8963 // assume scheduled to add 8964 return ERROR_CODE_COMMAND_DISALLOWED; 8965 } 8966 8967 // alloc and add to list 8968 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8969 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8970 entry->address_type = address_type; 8971 (void)memcpy(entry->address, address, 6); 8972 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8973 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8974 return ERROR_CODE_SUCCESS; 8975 } 8976 8977 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8978 btstack_linked_list_iterator_t it; 8979 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8980 while (btstack_linked_list_iterator_has_next(&it)){ 8981 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8982 if (entry->address_type != address_type) { 8983 continue; 8984 } 8985 if (memcmp(entry->address, address, 6) != 0) { 8986 continue; 8987 } 8988 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8989 // remove from controller if already present 8990 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8991 } else { 8992 // directly remove entry from whitelist 8993 btstack_linked_list_iterator_remove(&it); 8994 btstack_memory_whitelist_entry_free(entry); 8995 } 8996 return ERROR_CODE_SUCCESS; 8997 } 8998 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8999 } 9000 9001 static void hci_whitelist_clear(void){ 9002 btstack_linked_list_iterator_t it; 9003 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9004 while (btstack_linked_list_iterator_has_next(&it)){ 9005 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9006 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9007 // remove from controller if already present 9008 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9009 continue; 9010 } 9011 // directly remove entry from whitelist 9012 btstack_linked_list_iterator_remove(&it); 9013 btstack_memory_whitelist_entry_free(entry); 9014 } 9015 } 9016 9017 /** 9018 * @brief Clear Whitelist 9019 * @return 0 if ok 9020 */ 9021 uint8_t gap_whitelist_clear(void){ 9022 hci_whitelist_clear(); 9023 hci_run(); 9024 return ERROR_CODE_SUCCESS; 9025 } 9026 9027 /** 9028 * @brief Add Device to Whitelist 9029 * @param address_typ 9030 * @param address 9031 * @return 0 if ok 9032 */ 9033 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9034 uint8_t status = hci_whitelist_add(address_type, address); 9035 if (status){ 9036 return status; 9037 } 9038 hci_run(); 9039 return ERROR_CODE_SUCCESS; 9040 } 9041 9042 /** 9043 * @brief Remove Device from Whitelist 9044 * @param address_typ 9045 * @param address 9046 * @return 0 if ok 9047 */ 9048 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9049 uint8_t status = hci_whitelist_remove(address_type, address); 9050 if (status){ 9051 return status; 9052 } 9053 hci_run(); 9054 return ERROR_CODE_SUCCESS; 9055 } 9056 9057 #ifdef ENABLE_LE_CENTRAL 9058 /** 9059 * @brief Connect with Whitelist 9060 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9061 * @return - if ok 9062 */ 9063 uint8_t gap_connect_with_whitelist(void){ 9064 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9065 return ERROR_CODE_COMMAND_DISALLOWED; 9066 } 9067 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9068 hci_run(); 9069 return ERROR_CODE_SUCCESS; 9070 } 9071 9072 /** 9073 * @brief Auto Connection Establishment - Start Connecting to device 9074 * @param address_typ 9075 * @param address 9076 * @return 0 if ok 9077 */ 9078 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9079 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9080 return ERROR_CODE_COMMAND_DISALLOWED; 9081 } 9082 9083 uint8_t status = hci_whitelist_add(address_type, address); 9084 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9085 return status; 9086 } 9087 9088 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9089 9090 hci_run(); 9091 return ERROR_CODE_SUCCESS; 9092 } 9093 9094 /** 9095 * @brief Auto Connection Establishment - Stop Connecting to device 9096 * @param address_typ 9097 * @param address 9098 * @return 0 if ok 9099 */ 9100 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9101 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9102 return ERROR_CODE_COMMAND_DISALLOWED; 9103 } 9104 9105 hci_whitelist_remove(address_type, address); 9106 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9107 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9108 } 9109 hci_run(); 9110 return 0; 9111 } 9112 9113 /** 9114 * @brief Auto Connection Establishment - Stop everything 9115 * @note Convenience function to stop all active auto connection attempts 9116 */ 9117 uint8_t gap_auto_connection_stop_all(void){ 9118 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9119 return ERROR_CODE_COMMAND_DISALLOWED; 9120 } 9121 hci_whitelist_clear(); 9122 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9123 hci_run(); 9124 return ERROR_CODE_SUCCESS; 9125 } 9126 9127 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9128 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9129 if (!conn) return 0; 9130 return conn->le_connection_interval; 9131 } 9132 #endif 9133 #endif 9134 9135 #ifdef ENABLE_CLASSIC 9136 /** 9137 * @brief Set Extended Inquiry Response data 9138 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9139 * @note has to be done before stack starts up 9140 */ 9141 void gap_set_extended_inquiry_response(const uint8_t * data){ 9142 hci_stack->eir_data = data; 9143 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9144 hci_run(); 9145 } 9146 9147 /** 9148 * @brief Start GAP Classic Inquiry 9149 * @param duration in 1.28s units 9150 * @return 0 if ok 9151 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9152 */ 9153 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9154 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9155 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9156 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9157 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9158 } 9159 hci_stack->inquiry_state = duration_in_1280ms_units; 9160 hci_stack->inquiry_max_period_length = 0; 9161 hci_stack->inquiry_min_period_length = 0; 9162 hci_run(); 9163 return 0; 9164 } 9165 9166 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9167 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9168 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9169 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9170 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9171 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9172 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9173 9174 hci_stack->inquiry_state = duration; 9175 hci_stack->inquiry_max_period_length = max_period_length; 9176 hci_stack->inquiry_min_period_length = min_period_length; 9177 hci_run(); 9178 return 0; 9179 } 9180 9181 /** 9182 * @brief Stop GAP Classic Inquiry 9183 * @return 0 if ok 9184 */ 9185 int gap_inquiry_stop(void){ 9186 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9187 // emit inquiry complete event, before it even started 9188 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9189 hci_emit_event(event, sizeof(event), 1); 9190 return 0; 9191 } 9192 switch (hci_stack->inquiry_state){ 9193 case GAP_INQUIRY_STATE_ACTIVE: 9194 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9195 hci_run(); 9196 return ERROR_CODE_SUCCESS; 9197 case GAP_INQUIRY_STATE_PERIODIC: 9198 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9199 hci_run(); 9200 return ERROR_CODE_SUCCESS; 9201 default: 9202 return ERROR_CODE_COMMAND_DISALLOWED; 9203 } 9204 } 9205 9206 void gap_inquiry_set_lap(uint32_t lap){ 9207 hci_stack->inquiry_lap = lap; 9208 } 9209 9210 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9211 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9212 hci_stack->inquiry_scan_window = inquiry_scan_window; 9213 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9214 hci_run(); 9215 } 9216 9217 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9218 { 9219 hci_stack->inquiry_tx_power_level = tx_power; 9220 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9221 hci_run(); 9222 } 9223 9224 9225 /** 9226 * @brief Remote Name Request 9227 * @param addr 9228 * @param page_scan_repetition_mode 9229 * @param clock_offset only used when bit 15 is set 9230 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9231 */ 9232 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9233 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9234 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9235 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9236 hci_stack->remote_name_clock_offset = clock_offset; 9237 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9238 hci_run(); 9239 return 0; 9240 } 9241 9242 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9243 hci_stack->gap_pairing_state = state; 9244 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9245 hci_run(); 9246 return 0; 9247 } 9248 9249 /** 9250 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9251 * @param addr 9252 * @param pin_data 9253 * @param pin_len 9254 * @return 0 if ok 9255 */ 9256 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9257 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9258 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9259 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9260 hci_stack->gap_pairing_pin_len = pin_len; 9261 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9262 } 9263 9264 /** 9265 * @brief Legacy Pairing Pin Code Response 9266 * @param addr 9267 * @param pin 9268 * @return 0 if ok 9269 */ 9270 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9271 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9272 } 9273 9274 /** 9275 * @brief Abort Legacy Pairing 9276 * @param addr 9277 * @param pin 9278 * @return 0 if ok 9279 */ 9280 int gap_pin_code_negative(bd_addr_t addr){ 9281 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9282 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9283 } 9284 9285 /** 9286 * @brief SSP Passkey Response 9287 * @param addr 9288 * @param passkey 9289 * @return 0 if ok 9290 */ 9291 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9292 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9293 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9294 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9295 } 9296 9297 /** 9298 * @brief Abort SSP Passkey Entry/Pairing 9299 * @param addr 9300 * @param pin 9301 * @return 0 if ok 9302 */ 9303 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9304 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9305 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9306 } 9307 9308 /** 9309 * @brief Accept SSP Numeric Comparison 9310 * @param addr 9311 * @param passkey 9312 * @return 0 if ok 9313 */ 9314 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9315 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9316 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9317 } 9318 9319 /** 9320 * @brief Abort SSP Numeric Comparison/Pairing 9321 * @param addr 9322 * @param pin 9323 * @return 0 if ok 9324 */ 9325 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9326 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9327 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9328 } 9329 9330 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9331 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9332 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9333 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9334 connectionSetAuthenticationFlags(conn, flag); 9335 hci_run(); 9336 return ERROR_CODE_SUCCESS; 9337 } 9338 #endif 9339 9340 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9341 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9342 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9343 } 9344 9345 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9346 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9347 } 9348 #endif 9349 9350 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9351 /** 9352 * @brief Report Remote OOB Data 9353 * @param bd_addr 9354 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9355 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9356 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9357 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9358 */ 9359 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){ 9360 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9361 if (connection == NULL) { 9362 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9363 } 9364 connection->classic_oob_c_192 = c_192; 9365 connection->classic_oob_r_192 = r_192; 9366 9367 // ignore P-256 if not supported by us 9368 if (hci_stack->secure_connections_active){ 9369 connection->classic_oob_c_256 = c_256; 9370 connection->classic_oob_r_256 = r_256; 9371 } 9372 9373 return ERROR_CODE_SUCCESS; 9374 } 9375 /** 9376 * @brief Generate new OOB data 9377 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9378 */ 9379 void gap_ssp_generate_oob_data(void){ 9380 hci_stack->classic_read_local_oob_data = true; 9381 hci_run(); 9382 } 9383 9384 #endif 9385 9386 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9387 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9388 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9389 if (connection == NULL) { 9390 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9391 } 9392 9393 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9394 connection->link_key_type = type; 9395 9396 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9397 } 9398 9399 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9400 /** 9401 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9402 * @param inquiry_mode see bluetooth_defines.h 9403 */ 9404 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9405 hci_stack->inquiry_mode = inquiry_mode; 9406 } 9407 9408 /** 9409 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9410 */ 9411 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9412 hci_stack->sco_voice_setting = voice_setting; 9413 } 9414 9415 /** 9416 * @brief Get SCO Voice Setting 9417 * @return current voice setting 9418 */ 9419 uint16_t hci_get_sco_voice_setting(void){ 9420 return hci_stack->sco_voice_setting; 9421 } 9422 9423 static int hci_have_usb_transport(void){ 9424 if (!hci_stack->hci_transport) return 0; 9425 const char * transport_name = hci_stack->hci_transport->name; 9426 if (!transport_name) return 0; 9427 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9428 } 9429 9430 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9431 uint16_t sco_packet_length = 0; 9432 9433 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9434 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9435 int multiplier; 9436 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9437 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9438 multiplier = 2; 9439 } else { 9440 multiplier = 1; 9441 } 9442 #endif 9443 9444 #ifdef ENABLE_SCO_OVER_HCI 9445 if (hci_have_usb_transport()){ 9446 // see Core Spec for H2 USB Transfer. 9447 // 3 byte SCO header + 24 bytes per connection 9448 // @note multiple sco connections not supported currently 9449 sco_packet_length = 3 + 24 * multiplier; 9450 } else { 9451 // 3 byte SCO header + SCO packet length over the air 9452 sco_packet_length = 3 + payload_size * multiplier; 9453 // assert that it still fits inside an SCO buffer 9454 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9455 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9456 } 9457 } 9458 #endif 9459 #ifdef HAVE_SCO_TRANSPORT 9460 // 3 byte SCO header + SCO packet length over the air 9461 sco_packet_length = 3 + payload_size * multiplier; 9462 // assert that it still fits inside an SCO buffer 9463 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9464 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9465 } 9466 #endif 9467 return sco_packet_length; 9468 } 9469 9470 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9471 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9472 if (connection != NULL){ 9473 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9474 } 9475 return 0; 9476 } 9477 9478 uint16_t hci_get_sco_packet_length(void){ 9479 btstack_linked_list_iterator_t it; 9480 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9481 while (btstack_linked_list_iterator_has_next(&it)){ 9482 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9483 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9484 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9485 } 9486 } 9487 return 0; 9488 } 9489 9490 /** 9491 * @brief Sets the master/slave policy 9492 * @param policy (0: attempt to become master, 1: let connecting device decide) 9493 */ 9494 void hci_set_master_slave_policy(uint8_t policy){ 9495 hci_stack->master_slave_policy = policy; 9496 } 9497 9498 #endif 9499 9500 HCI_STATE hci_get_state(void){ 9501 return hci_stack->state; 9502 } 9503 9504 #ifdef ENABLE_CLASSIC 9505 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9506 hci_stack->gap_classic_accept_callback = accept_callback; 9507 } 9508 #endif 9509 9510 /** 9511 * @brief Set callback for Bluetooth Hardware Error 9512 */ 9513 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9514 hci_stack->hardware_error_callback = fn; 9515 } 9516 9517 void hci_disconnect_all(void){ 9518 btstack_linked_list_iterator_t it; 9519 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9520 while (btstack_linked_list_iterator_has_next(&it)){ 9521 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9522 if (con->state == SENT_DISCONNECT) continue; 9523 con->state = SEND_DISCONNECT; 9524 } 9525 hci_run(); 9526 } 9527 9528 uint16_t hci_get_manufacturer(void){ 9529 return hci_stack->manufacturer; 9530 } 9531 9532 #ifdef ENABLE_BLE 9533 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9534 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9535 if (!hci_con) return NULL; 9536 return &hci_con->sm_connection; 9537 } 9538 9539 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9540 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9541 #endif 9542 9543 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9544 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9545 if (hci_connection == NULL) return 0; 9546 if (hci_is_le_connection(hci_connection)){ 9547 #ifdef ENABLE_BLE 9548 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9549 if (sm_conn->sm_connection_encrypted != 0u) { 9550 return sm_conn->sm_actual_encryption_key_size; 9551 } 9552 #endif 9553 } else { 9554 #ifdef ENABLE_CLASSIC 9555 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9556 return hci_connection->encryption_key_size; 9557 } 9558 #endif 9559 } 9560 return 0; 9561 } 9562 9563 bool gap_authenticated(hci_con_handle_t con_handle){ 9564 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9565 if (hci_connection == NULL) return false; 9566 9567 switch (hci_connection->address_type){ 9568 #ifdef ENABLE_BLE 9569 case BD_ADDR_TYPE_LE_PUBLIC: 9570 case BD_ADDR_TYPE_LE_RANDOM: 9571 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9572 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9573 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9574 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9575 #endif 9576 #ifdef ENABLE_CLASSIC 9577 case BD_ADDR_TYPE_SCO: 9578 case BD_ADDR_TYPE_ACL: 9579 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9580 #endif 9581 default: 9582 return false; 9583 } 9584 } 9585 9586 bool gap_secure_connection(hci_con_handle_t con_handle){ 9587 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9588 if (hci_connection == NULL) return 0; 9589 9590 switch (hci_connection->address_type){ 9591 #ifdef ENABLE_BLE 9592 case BD_ADDR_TYPE_LE_PUBLIC: 9593 case BD_ADDR_TYPE_LE_RANDOM: 9594 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9595 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9596 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9597 return hci_connection->sm_connection.sm_connection_sc; 9598 #endif 9599 #ifdef ENABLE_CLASSIC 9600 case BD_ADDR_TYPE_SCO: 9601 case BD_ADDR_TYPE_ACL: 9602 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9603 #endif 9604 default: 9605 return false; 9606 } 9607 } 9608 9609 bool gap_bonded(hci_con_handle_t con_handle){ 9610 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9611 if (hci_connection == NULL) return 0; 9612 9613 #ifdef ENABLE_CLASSIC 9614 link_key_t link_key; 9615 link_key_type_t link_key_type; 9616 #endif 9617 switch (hci_connection->address_type){ 9618 #ifdef ENABLE_BLE 9619 case BD_ADDR_TYPE_LE_PUBLIC: 9620 case BD_ADDR_TYPE_LE_RANDOM: 9621 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9622 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9623 return hci_connection->sm_connection.sm_le_db_index >= 0; 9624 #endif 9625 #ifdef ENABLE_CLASSIC 9626 case BD_ADDR_TYPE_SCO: 9627 case BD_ADDR_TYPE_ACL: 9628 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9629 #endif 9630 default: 9631 return false; 9632 } 9633 } 9634 9635 #ifdef ENABLE_BLE 9636 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9637 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9638 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9639 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9640 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9641 return sm_conn->sm_connection_authorization_state; 9642 } 9643 #endif 9644 9645 #ifdef ENABLE_CLASSIC 9646 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){ 9647 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9648 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9649 conn->sniff_min_interval = sniff_min_interval; 9650 conn->sniff_max_interval = sniff_max_interval; 9651 conn->sniff_attempt = sniff_attempt; 9652 conn->sniff_timeout = sniff_timeout; 9653 hci_run(); 9654 return 0; 9655 } 9656 9657 /** 9658 * @brief Exit Sniff mode 9659 * @param con_handle 9660 @ @return 0 if ok 9661 */ 9662 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9663 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9664 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9665 conn->sniff_min_interval = 0xffff; 9666 hci_run(); 9667 return 0; 9668 } 9669 9670 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){ 9671 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9672 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9673 conn->sniff_subrating_max_latency = max_latency; 9674 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9675 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9676 hci_run(); 9677 return ERROR_CODE_SUCCESS; 9678 } 9679 9680 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){ 9681 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9682 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9683 conn->qos_service_type = service_type; 9684 conn->qos_token_rate = token_rate; 9685 conn->qos_peak_bandwidth = peak_bandwidth; 9686 conn->qos_latency = latency; 9687 conn->qos_delay_variation = delay_variation; 9688 hci_run(); 9689 return ERROR_CODE_SUCCESS; 9690 } 9691 9692 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9693 hci_stack->new_page_scan_interval = page_scan_interval; 9694 hci_stack->new_page_scan_window = page_scan_window; 9695 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9696 hci_run(); 9697 } 9698 9699 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9700 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9701 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9702 hci_run(); 9703 } 9704 9705 void gap_set_page_timeout(uint16_t page_timeout){ 9706 hci_stack->page_timeout = page_timeout; 9707 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9708 hci_run(); 9709 } 9710 9711 #endif 9712 9713 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9714 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9715 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9716 if (le_device_db_index >= le_device_db_max_count()) return; 9717 uint8_t offset = le_device_db_index >> 3; 9718 uint8_t mask = 1 << (le_device_db_index & 7); 9719 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9720 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9721 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9722 // note: go back to remove entries, otherwise, a remove + add will skip the add 9723 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9724 } 9725 } 9726 9727 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9728 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9729 if (le_device_db_index >= le_device_db_max_count()) return; 9730 uint8_t offset = le_device_db_index >> 3; 9731 uint8_t mask = 1 << (le_device_db_index & 7); 9732 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9733 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9734 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9735 } 9736 } 9737 9738 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9739 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9740 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9741 } 9742 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9743 // restart le resolving list update 9744 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9745 } 9746 return ERROR_CODE_SUCCESS; 9747 } 9748 9749 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9750 hci_stack->le_privacy_mode = privacy_mode; 9751 } 9752 #endif 9753 9754 #ifdef ENABLE_BLE 9755 #ifdef ENABLE_LE_CENTRAL 9756 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9757 9758 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9759 9760 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9761 // incorrect configuration: 9762 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9763 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9764 btstack_assert(false); 9765 #endif 9766 9767 // check if already in list 9768 btstack_linked_list_iterator_t it; 9769 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9770 while (btstack_linked_list_iterator_has_next(&it)) { 9771 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9772 if (entry->sid != advertising_sid) { 9773 continue; 9774 } 9775 if (entry->address_type != address_type) { 9776 continue; 9777 } 9778 if (memcmp(entry->address, address, 6) != 0) { 9779 continue; 9780 } 9781 // disallow if already scheduled to add 9782 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9783 return ERROR_CODE_COMMAND_DISALLOWED; 9784 } 9785 // still on controller, but scheduled to remove -> re-add 9786 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9787 return ERROR_CODE_SUCCESS; 9788 } 9789 // alloc and add to list 9790 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9791 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9792 entry->sid = advertising_sid; 9793 entry->address_type = address_type; 9794 (void)memcpy(entry->address, address, 6); 9795 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9796 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9797 return ERROR_CODE_SUCCESS; 9798 } 9799 9800 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9801 btstack_linked_list_iterator_t it; 9802 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9803 while (btstack_linked_list_iterator_has_next(&it)){ 9804 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9805 if (entry->sid != advertising_sid) { 9806 continue; 9807 } 9808 if (entry->address_type != address_type) { 9809 continue; 9810 } 9811 if (memcmp(entry->address, address, 6) != 0) { 9812 continue; 9813 } 9814 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9815 // remove from controller if already present 9816 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9817 } else { 9818 // directly remove entry from whitelist 9819 btstack_linked_list_iterator_remove(&it); 9820 btstack_memory_periodic_advertiser_list_entry_free(entry); 9821 } 9822 return ERROR_CODE_SUCCESS; 9823 } 9824 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9825 } 9826 9827 static void hci_periodic_advertiser_list_clear(void){ 9828 btstack_linked_list_iterator_t it; 9829 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9830 while (btstack_linked_list_iterator_has_next(&it)){ 9831 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9832 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9833 // remove from controller if already present 9834 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9835 continue; 9836 } 9837 // directly remove entry from whitelist 9838 btstack_linked_list_iterator_remove(&it); 9839 btstack_memory_periodic_advertiser_list_entry_free(entry); 9840 } 9841 } 9842 9843 uint8_t gap_periodic_advertiser_list_clear(void){ 9844 hci_periodic_advertiser_list_clear(); 9845 hci_run(); 9846 return ERROR_CODE_SUCCESS; 9847 } 9848 9849 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9850 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9851 if (status){ 9852 return status; 9853 } 9854 hci_run(); 9855 return ERROR_CODE_SUCCESS; 9856 } 9857 9858 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9859 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9860 if (status){ 9861 return status; 9862 } 9863 hci_run(); 9864 return ERROR_CODE_SUCCESS; 9865 } 9866 9867 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9868 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9869 // abort if already active 9870 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9871 return ERROR_CODE_COMMAND_DISALLOWED; 9872 } 9873 // store request 9874 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9875 hci_stack->le_periodic_sync_options = options; 9876 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9877 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9878 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9879 hci_stack->le_periodic_sync_skip = skip; 9880 hci_stack->le_periodic_sync_timeout = sync_timeout; 9881 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9882 9883 hci_run(); 9884 return ERROR_CODE_SUCCESS; 9885 } 9886 9887 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9888 // abort if not requested 9889 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9890 return ERROR_CODE_COMMAND_DISALLOWED; 9891 } 9892 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9893 hci_run(); 9894 return ERROR_CODE_SUCCESS; 9895 } 9896 9897 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9898 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9899 return ERROR_CODE_COMMAND_DISALLOWED; 9900 } 9901 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9902 hci_run(); 9903 return ERROR_CODE_SUCCESS; 9904 } 9905 9906 #endif 9907 #endif 9908 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9909 static hci_iso_stream_t * 9910 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9911 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9912 if (iso_stream != NULL){ 9913 iso_stream->iso_type = iso_type; 9914 iso_stream->state = state; 9915 iso_stream->group_id = group_id; 9916 iso_stream->stream_id = stream_id; 9917 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9918 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9919 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9920 } 9921 return iso_stream; 9922 } 9923 9924 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9925 btstack_linked_list_iterator_t it; 9926 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9927 while (btstack_linked_list_iterator_has_next(&it)){ 9928 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9929 if (iso_stream->cis_handle == con_handle ) { 9930 return iso_stream; 9931 } 9932 } 9933 return NULL; 9934 } 9935 9936 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9937 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9938 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9939 btstack_memory_hci_iso_stream_free(iso_stream); 9940 } 9941 9942 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9943 btstack_linked_list_iterator_t it; 9944 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9945 while (btstack_linked_list_iterator_has_next(&it)){ 9946 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9947 if ((iso_stream->group_id == group_id) && 9948 (iso_stream->iso_type == iso_type)){ 9949 btstack_linked_list_iterator_remove(&it); 9950 btstack_memory_hci_iso_stream_free(iso_stream); 9951 } 9952 } 9953 } 9954 9955 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9956 btstack_linked_list_iterator_t it; 9957 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9958 while (btstack_linked_list_iterator_has_next(&it)){ 9959 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9960 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9961 (iso_stream->group_id == group_id)){ 9962 btstack_linked_list_iterator_remove(&it); 9963 btstack_memory_hci_iso_stream_free(iso_stream); 9964 } 9965 } 9966 } 9967 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9968 btstack_linked_list_iterator_t it; 9969 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9970 while (btstack_linked_list_iterator_has_next(&it)){ 9971 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9972 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9973 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9974 } 9975 } 9976 } 9977 9978 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9979 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9980 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9981 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9982 return (sdu_len_offset + 2 + sdu_len) == size; 9983 } 9984 9985 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 9986 if (iso_stream == NULL){ 9987 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 9988 return; 9989 } 9990 9991 if (hci_stack->iso_packet_handler == NULL) { 9992 return; 9993 } 9994 9995 // parse header 9996 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 9997 uint16_t data_total_length = little_endian_read_16(packet, 2); 9998 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 9999 10000 // assert packet is complete 10001 if ((data_total_length + 4u) != size){ 10002 return; 10003 } 10004 10005 if ((pb_flag & 0x01) == 0){ 10006 if (pb_flag == 0x02){ 10007 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10008 if (hci_iso_sdu_complete(packet, size)) { 10009 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10010 } 10011 } else { 10012 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10013 if (size > sizeof(iso_stream->reassembly_buffer)){ 10014 return; 10015 } 10016 memcpy(iso_stream->reassembly_buffer, packet, size); 10017 // fix pb_flag 10018 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10019 iso_stream->reassembly_pos = size; 10020 } 10021 } else { 10022 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10023 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10024 if (ts_flag != 0){ 10025 return; 10026 } 10027 // append fragment 10028 if (iso_stream->reassembly_pos == 0){ 10029 return; 10030 } 10031 10032 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10033 // reset reassembly buffer 10034 iso_stream->reassembly_pos = 0; 10035 return; 10036 } 10037 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10038 iso_stream->reassembly_pos += data_total_length; 10039 10040 // deliver if last fragment and SDU complete 10041 if (pb_flag == 0x03){ 10042 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10043 // fix data_total_length 10044 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10045 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10046 } 10047 // reset reassembly buffer 10048 iso_stream->reassembly_pos = 0; 10049 } 10050 } 10051 } 10052 10053 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10054 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10055 uint16_t pos = 0; 10056 event[pos++] = HCI_EVENT_META_GAP; 10057 event[pos++] = 4 + (2 * big->num_bis); 10058 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10059 event[pos++] = status; 10060 event[pos++] = big->big_handle; 10061 event[pos++] = big->num_bis; 10062 uint8_t i; 10063 for (i=0;i<big->num_bis;i++){ 10064 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10065 pos += 2; 10066 } 10067 hci_emit_event(event, pos, 0); 10068 } 10069 10070 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10071 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10072 uint16_t pos = 0; 10073 event[pos++] = HCI_EVENT_META_GAP; 10074 event[pos++] = 4 + (2 * cig->num_cis); 10075 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10076 event[pos++] = status; 10077 event[pos++] = cig->cig_id; 10078 event[pos++] = cig->num_cis; 10079 uint8_t i; 10080 for (i=0;i<cig->num_cis;i++){ 10081 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10082 pos += 2; 10083 } 10084 hci_emit_event(event, pos, 0); 10085 } 10086 10087 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10088 uint16_t pos = 0; 10089 event[pos++] = HCI_EVENT_META_GAP; 10090 event[pos++] = 8; 10091 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10092 event[pos++] = status; 10093 event[pos++] = iso_stream->group_id; 10094 event[pos++] = iso_stream->stream_id; 10095 little_endian_store_16(event, pos, iso_stream->cis_handle); 10096 pos += 2; 10097 little_endian_store_16(event, pos, iso_stream->acl_handle); 10098 pos += 2; 10099 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10100 pos += 2; 10101 event[pos++] = iso_stream->number_of_subevents; 10102 event[pos++] = iso_stream->burst_number_c_to_p; 10103 event[pos++] = iso_stream->burst_number_p_to_c; 10104 event[pos++] = iso_stream->flush_timeout_c_to_p; 10105 event[pos++] = iso_stream->flush_timeout_p_to_c; 10106 return pos; 10107 } 10108 10109 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10110 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10111 // cache data before finalizing struct 10112 uint8_t event [17]; 10113 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10114 btstack_assert(pos <= sizeof(event)); 10115 if (status != ERROR_CODE_SUCCESS){ 10116 hci_iso_stream_finalize(iso_stream); 10117 } 10118 hci_emit_event(event, pos, 0); 10119 } 10120 10121 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10122 uint8_t event [4]; 10123 uint16_t pos = 0; 10124 event[pos++] = HCI_EVENT_META_GAP; 10125 event[pos++] = 2; 10126 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10127 event[pos++] = big->big_handle; 10128 hci_emit_event(event, pos, 0); 10129 } 10130 10131 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10132 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10133 uint16_t pos = 0; 10134 event[pos++] = HCI_EVENT_META_GAP; 10135 event[pos++] = 4; 10136 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10137 event[pos++] = status; 10138 event[pos++] = big_sync->big_handle; 10139 event[pos++] = big_sync->num_bis; 10140 uint8_t i; 10141 for (i=0;i<big_sync->num_bis;i++){ 10142 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10143 pos += 2; 10144 } 10145 hci_emit_event(event, pos, 0); 10146 } 10147 10148 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10149 uint8_t event [4]; 10150 uint16_t pos = 0; 10151 event[pos++] = HCI_EVENT_META_GAP; 10152 event[pos++] = 2; 10153 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10154 event[pos++] = big_handle; 10155 hci_emit_event(event, pos, 0); 10156 } 10157 10158 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10159 uint8_t event[6]; 10160 uint16_t pos = 0; 10161 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10162 event[pos++] = sizeof(event) - 2; 10163 event[pos++] = big->big_handle; 10164 event[pos++] = bis_index; 10165 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10166 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10167 } 10168 10169 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10170 uint8_t event[4]; 10171 uint16_t pos = 0; 10172 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10173 event[pos++] = sizeof(event) - 2; 10174 little_endian_store_16(event, pos, cis_con_handle); 10175 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10176 } 10177 10178 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10179 btstack_linked_list_iterator_t it; 10180 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10181 while (btstack_linked_list_iterator_has_next(&it)){ 10182 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10183 if ( big->big_handle == big_handle ) { 10184 return big; 10185 } 10186 } 10187 return NULL; 10188 } 10189 10190 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10191 btstack_linked_list_iterator_t it; 10192 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10193 while (btstack_linked_list_iterator_has_next(&it)){ 10194 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10195 if ( big_sync->big_handle == big_handle ) { 10196 return big_sync; 10197 } 10198 } 10199 return NULL; 10200 } 10201 10202 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10203 hci_stack->iso_packets_to_queue = num_packets; 10204 } 10205 10206 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10207 btstack_linked_list_iterator_t it; 10208 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10209 while (btstack_linked_list_iterator_has_next(&it)){ 10210 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10211 if ( cig->cig_id == cig_id ) { 10212 return cig; 10213 } 10214 } 10215 return NULL; 10216 } 10217 10218 static void hci_iso_notify_can_send_now(void){ 10219 10220 // BIG 10221 10222 btstack_linked_list_iterator_t it; 10223 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10224 while (btstack_linked_list_iterator_has_next(&it)){ 10225 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10226 // track number completed packet timestamps 10227 if (big->num_completed_timestamp_current_valid){ 10228 big->num_completed_timestamp_current_valid = false; 10229 if (big->num_completed_timestamp_previous_valid){ 10230 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10231 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10232 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10233 big->num_completed_timestamp_previous_ms); 10234 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10235 // to catch up, skip packet on all BIS 10236 uint8_t i; 10237 for (i=0;i<big->num_bis;i++){ 10238 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10239 if (iso_stream){ 10240 iso_stream->num_packets_to_skip++; 10241 } 10242 } 10243 } 10244 } 10245 big->num_completed_timestamp_previous_valid = true; 10246 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10247 } 10248 10249 if (big->can_send_now_requested){ 10250 // check if no outgoing iso packets pending and no can send now have to be emitted 10251 uint8_t i; 10252 bool can_send = true; 10253 uint8_t num_iso_queued_minimum = 0; 10254 for (i=0;i<big->num_bis;i++){ 10255 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10256 if (iso_stream == NULL) continue; 10257 // handle case where individual ISO packet was sent too late: 10258 // for each additionally queued packet, a new one needs to get skipped 10259 if (i==0){ 10260 num_iso_queued_minimum = iso_stream->num_packets_sent; 10261 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10262 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10263 iso_stream->num_packets_to_skip += num_packets_to_skip; 10264 iso_stream->num_packets_sent -= num_packets_to_skip; 10265 } 10266 // check if we can send now 10267 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10268 can_send = false; 10269 break; 10270 } 10271 } 10272 if (can_send){ 10273 // propagate can send now to individual streams 10274 big->can_send_now_requested = false; 10275 for (i=0;i<big->num_bis;i++){ 10276 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10277 iso_stream->emit_ready_to_send = true; 10278 } 10279 } 10280 } 10281 } 10282 10283 if (hci_stack->hci_packet_buffer_reserved) return; 10284 10285 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10286 while (btstack_linked_list_iterator_has_next(&it)){ 10287 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10288 // report bis ready 10289 uint8_t i; 10290 for (i=0;i<big->num_bis;i++){ 10291 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10292 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10293 iso_stream->emit_ready_to_send = false; 10294 hci_emit_bis_can_send_now(big, i); 10295 break; 10296 } 10297 } 10298 } 10299 10300 // CIS 10301 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10302 while (btstack_linked_list_iterator_has_next(&it)) { 10303 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10304 if ((iso_stream->can_send_now_requested) && 10305 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10306 iso_stream->can_send_now_requested = false; 10307 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10308 } 10309 } 10310 } 10311 10312 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10313 // make big handle unique and usuable for big and big sync 10314 if (hci_big_for_handle(big_handle) != NULL){ 10315 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10316 } 10317 if (hci_big_sync_for_handle(big_handle) != NULL){ 10318 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10319 } 10320 if (num_bis == 0){ 10321 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10322 } 10323 if (num_bis > MAX_NR_BIS){ 10324 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10325 } 10326 10327 // reserve ISO Streams 10328 uint8_t i; 10329 uint8_t status = ERROR_CODE_SUCCESS; 10330 for (i=0;i<num_bis;i++){ 10331 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10332 if (iso_stream == NULL) { 10333 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10334 break; 10335 } 10336 } 10337 10338 // free structs on error 10339 if (status != ERROR_CODE_SUCCESS){ 10340 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10341 } 10342 10343 return status; 10344 } 10345 10346 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10347 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10348 if (status != ERROR_CODE_SUCCESS){ 10349 return status; 10350 } 10351 10352 le_audio_big_t * big = storage; 10353 big->big_handle = big_params->big_handle; 10354 big->params = big_params; 10355 big->state = LE_AUDIO_BIG_STATE_CREATE; 10356 big->num_bis = big_params->num_bis; 10357 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10358 10359 hci_run(); 10360 10361 return ERROR_CODE_SUCCESS; 10362 } 10363 10364 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10365 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10366 if (status != ERROR_CODE_SUCCESS){ 10367 return status; 10368 } 10369 10370 le_audio_big_sync_t * big_sync = storage; 10371 big_sync->big_handle = big_sync_params->big_handle; 10372 big_sync->params = big_sync_params; 10373 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10374 big_sync->num_bis = big_sync_params->num_bis; 10375 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10376 10377 hci_run(); 10378 10379 return ERROR_CODE_SUCCESS; 10380 } 10381 10382 uint8_t gap_big_terminate(uint8_t big_handle){ 10383 le_audio_big_t * big = hci_big_for_handle(big_handle); 10384 if (big == NULL){ 10385 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10386 } 10387 switch (big->state){ 10388 case LE_AUDIO_BIG_STATE_CREATE: 10389 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10390 hci_emit_big_terminated(big); 10391 break; 10392 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10393 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10394 break; 10395 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10396 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10397 case LE_AUDIO_BIG_STATE_ACTIVE: 10398 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10399 hci_run(); 10400 break; 10401 default: 10402 return ERROR_CODE_COMMAND_DISALLOWED; 10403 } 10404 return ERROR_CODE_SUCCESS; 10405 } 10406 10407 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10408 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10409 if (big_sync == NULL){ 10410 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10411 } 10412 switch (big_sync->state){ 10413 case LE_AUDIO_BIG_STATE_CREATE: 10414 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10415 hci_emit_big_sync_stopped(big_handle); 10416 break; 10417 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10418 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10419 break; 10420 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10421 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10422 case LE_AUDIO_BIG_STATE_ACTIVE: 10423 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10424 hci_run(); 10425 break; 10426 default: 10427 return ERROR_CODE_COMMAND_DISALLOWED; 10428 } 10429 return ERROR_CODE_SUCCESS; 10430 } 10431 10432 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10433 le_audio_big_t * big = hci_big_for_handle(big_handle); 10434 if (big == NULL){ 10435 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10436 } 10437 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10438 return ERROR_CODE_COMMAND_DISALLOWED; 10439 } 10440 big->can_send_now_requested = true; 10441 hci_iso_notify_can_send_now(); 10442 return ERROR_CODE_SUCCESS; 10443 } 10444 10445 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10446 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10447 if (iso_stream == NULL){ 10448 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10449 } 10450 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10451 return ERROR_CODE_COMMAND_DISALLOWED; 10452 } 10453 iso_stream->can_send_now_requested = true; 10454 hci_iso_notify_can_send_now(); 10455 return ERROR_CODE_SUCCESS; 10456 } 10457 10458 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10459 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10460 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10461 } 10462 if (cig_params->num_cis == 0){ 10463 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10464 } 10465 if (cig_params->num_cis > MAX_NR_CIS){ 10466 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10467 } 10468 10469 // reserve ISO Streams 10470 uint8_t i; 10471 uint8_t status = ERROR_CODE_SUCCESS; 10472 for (i=0;i<cig_params->num_cis;i++){ 10473 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10474 if (iso_stream == NULL) { 10475 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10476 break; 10477 } 10478 } 10479 10480 // free structs on error 10481 if (status != ERROR_CODE_SUCCESS){ 10482 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10483 return status; 10484 } 10485 10486 le_audio_cig_t * cig = storage; 10487 cig->cig_id = cig_params->cig_id; 10488 cig->num_cis = cig_params->num_cis; 10489 cig->params = cig_params; 10490 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10491 for (i=0;i<cig->num_cis;i++){ 10492 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10493 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10494 cig->cis_setup_active[i] = false; 10495 cig->cis_established[i] = false; 10496 } 10497 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10498 10499 hci_run(); 10500 10501 return ERROR_CODE_SUCCESS; 10502 } 10503 10504 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10505 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10506 if (cig == NULL){ 10507 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10508 } 10509 10510 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10511 return ERROR_CODE_COMMAND_DISALLOWED; 10512 } 10513 10514 // store ACL Connection Handles 10515 uint8_t i; 10516 for (i=0;i<cig->num_cis;i++){ 10517 // check that all con handles exist and store 10518 hci_con_handle_t cis_handle = cis_con_handles[i]; 10519 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10520 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10521 } 10522 uint8_t j; 10523 bool found = false; 10524 for (j=0;j<cig->num_cis;j++){ 10525 if (cig->cis_con_handles[j] == cis_handle){ 10526 cig->acl_con_handles[j] = acl_con_handles[j]; 10527 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10528 btstack_assert(iso_stream != NULL); 10529 iso_stream->acl_handle = acl_con_handles[j]; 10530 found = true; 10531 break; 10532 } 10533 } 10534 if (!found){ 10535 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10536 } 10537 } 10538 10539 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10540 hci_run(); 10541 10542 return ERROR_CODE_SUCCESS; 10543 } 10544 10545 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10546 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10547 if (iso_stream == NULL){ 10548 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10549 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10550 } 10551 10552 // set next state and continue 10553 iso_stream->state = state; 10554 hci_run(); 10555 return ERROR_CODE_SUCCESS; 10556 } 10557 10558 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10559 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10560 } 10561 10562 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10563 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10564 } 10565 10566 10567 #endif 10568 #endif /* ENABLE_BLE */ 10569 10570 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10571 void hci_setup_test_connections_fuzz(void){ 10572 hci_connection_t * conn; 10573 10574 // default address: 66:55:44:33:00:01 10575 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10576 10577 // setup Controller info 10578 hci_stack->num_cmd_packets = 255; 10579 hci_stack->acl_packets_total_num = 255; 10580 10581 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10582 addr[5] = 0x01; 10583 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10584 conn->con_handle = addr[5]; 10585 conn->state = RECEIVED_CONNECTION_REQUEST; 10586 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10587 10588 // setup incoming Classic SCO connection with con handle 0x0002 10589 addr[5] = 0x02; 10590 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10591 conn->con_handle = addr[5]; 10592 conn->state = RECEIVED_CONNECTION_REQUEST; 10593 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10594 10595 // setup ready Classic ACL connection with con handle 0x0003 10596 addr[5] = 0x03; 10597 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10598 conn->con_handle = addr[5]; 10599 conn->state = OPEN; 10600 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10601 10602 // setup ready Classic SCO connection with con handle 0x0004 10603 addr[5] = 0x04; 10604 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10605 conn->con_handle = addr[5]; 10606 conn->state = OPEN; 10607 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10608 10609 // setup ready LE ACL connection with con handle 0x005 and public address 10610 addr[5] = 0x05; 10611 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10612 conn->con_handle = addr[5]; 10613 conn->state = OPEN; 10614 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10615 conn->sm_connection.sm_connection_encrypted = 1; 10616 } 10617 10618 void hci_free_connections_fuzz(void){ 10619 btstack_linked_list_iterator_t it; 10620 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10621 while (btstack_linked_list_iterator_has_next(&it)){ 10622 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10623 btstack_linked_list_iterator_remove(&it); 10624 btstack_memory_hci_connection_free(con); 10625 } 10626 } 10627 void hci_simulate_working_fuzz(void){ 10628 hci_stack->le_scanning_param_update = false; 10629 hci_init_done(); 10630 hci_stack->num_cmd_packets = 255; 10631 } 10632 #endif 10633