1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static bool hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(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 } 308 309 /** 310 * create connection for given address 311 * 312 * @return connection OR NULL, if no memory left 313 */ 314 static hci_connection_t * 315 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 316 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 317 318 hci_connection_t * conn = btstack_memory_hci_connection_get(); 319 if (!conn) return NULL; 320 hci_connection_init(conn); 321 322 bd_addr_copy(conn->address, addr); 323 conn->address_type = addr_type; 324 conn->con_handle = HCI_CON_HANDLE_INVALID; 325 conn->role = role; 326 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 327 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 328 conn->le_past_advertising_handle = 0xff; 329 #endif 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 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 608 switch (address_type){ 609 case BD_ADDR_TYPE_LE_PUBLIC: 610 case BD_ADDR_TYPE_LE_RANDOM: 611 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 612 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 613 return true; 614 default: 615 return false; 616 } 617 } 618 619 static bool hci_is_le_connection(hci_connection_t * connection){ 620 return hci_is_le_connection_type(connection->address_type); 621 } 622 623 /** 624 * count connections 625 */ 626 static int nr_hci_connections(void){ 627 int count = 0; 628 btstack_linked_item_t *it; 629 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 630 count++; 631 } 632 return count; 633 } 634 635 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 636 637 unsigned int num_packets_sent_classic = 0; 638 unsigned int num_packets_sent_le = 0; 639 640 btstack_linked_item_t *it; 641 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 642 hci_connection_t * connection = (hci_connection_t *) it; 643 if (hci_is_le_connection(connection)){ 644 num_packets_sent_le += connection->num_packets_sent; 645 } 646 if (connection->address_type == BD_ADDR_TYPE_ACL){ 647 num_packets_sent_classic += connection->num_packets_sent; 648 } 649 } 650 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 651 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 652 int free_slots_le = 0; 653 654 if (free_slots_classic < 0){ 655 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 656 return 0; 657 } 658 659 if (hci_stack->le_acl_packets_total_num){ 660 // if we have LE slots, they are used 661 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 662 if (free_slots_le < 0){ 663 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 664 return 0; 665 } 666 } else { 667 // otherwise, classic slots are used for LE, too 668 free_slots_classic -= num_packets_sent_le; 669 if (free_slots_classic < 0){ 670 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 671 return 0; 672 } 673 } 674 675 switch (address_type){ 676 case BD_ADDR_TYPE_UNKNOWN: 677 log_error("hci_number_free_acl_slots: unknown address type"); 678 return 0; 679 680 case BD_ADDR_TYPE_ACL: 681 return (uint16_t) free_slots_classic; 682 683 default: 684 if (hci_stack->le_acl_packets_total_num > 0){ 685 return (uint16_t) free_slots_le; 686 } 687 return (uint16_t) free_slots_classic; 688 } 689 } 690 691 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 692 // get connection type 693 hci_connection_t * connection = hci_connection_for_handle(con_handle); 694 if (!connection){ 695 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 696 return 0; 697 } 698 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 699 } 700 701 #ifdef ENABLE_CLASSIC 702 static int hci_number_free_sco_slots(void){ 703 unsigned int num_sco_packets_sent = 0; 704 btstack_linked_item_t *it; 705 if (hci_stack->synchronous_flow_control_enabled){ 706 // explicit flow control 707 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 708 hci_connection_t * connection = (hci_connection_t *) it; 709 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 710 num_sco_packets_sent += connection->num_packets_sent; 711 } 712 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 713 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 714 return 0; 715 } 716 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 717 } else { 718 // implicit flow control -- TODO 719 int num_ready = 0; 720 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 721 hci_connection_t * connection = (hci_connection_t *) it; 722 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 723 if (connection->sco_tx_ready == 0) continue; 724 num_ready++; 725 } 726 return num_ready; 727 } 728 } 729 #endif 730 731 // only used to send HCI Host Number Completed Packets 732 static int hci_can_send_comand_packet_transport(void){ 733 if (hci_stack->hci_packet_buffer_reserved) return 0; 734 735 // check for async hci transport implementations 736 if (hci_stack->hci_transport->can_send_packet_now){ 737 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 738 return 0; 739 } 740 } 741 return 1; 742 } 743 744 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 745 bool hci_can_send_command_packet_now(void){ 746 if (hci_can_send_comand_packet_transport() == 0) return false; 747 return hci_stack->num_cmd_packets > 0u; 748 } 749 750 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 751 // check for async hci transport implementations 752 if (!hci_stack->hci_transport->can_send_packet_now) return true; 753 return hci_stack->hci_transport->can_send_packet_now(packet_type); 754 } 755 756 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 757 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 758 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 759 } 760 761 bool hci_can_send_acl_le_packet_now(void){ 762 if (hci_stack->hci_packet_buffer_reserved) return false; 763 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 764 } 765 766 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 767 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 768 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 769 } 770 771 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 772 if (hci_stack->hci_packet_buffer_reserved) return false; 773 return hci_can_send_prepared_acl_packet_now(con_handle); 774 } 775 776 #ifdef ENABLE_CLASSIC 777 bool hci_can_send_acl_classic_packet_now(void){ 778 if (hci_stack->hci_packet_buffer_reserved) return false; 779 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 780 } 781 782 bool hci_can_send_prepared_sco_packet_now(void){ 783 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 784 if (hci_have_usb_transport()){ 785 return hci_stack->sco_can_send_now; 786 } else { 787 return hci_number_free_sco_slots() > 0; 788 } 789 } 790 791 bool hci_can_send_sco_packet_now(void){ 792 if (hci_stack->hci_packet_buffer_reserved) return false; 793 return hci_can_send_prepared_sco_packet_now(); 794 } 795 796 void hci_request_sco_can_send_now_event(void){ 797 hci_stack->sco_waiting_for_can_send_now = 1; 798 hci_notify_if_sco_can_send_now(); 799 } 800 #endif 801 802 // used for internal checks in l2cap.c 803 bool hci_is_packet_buffer_reserved(void){ 804 return hci_stack->hci_packet_buffer_reserved; 805 } 806 807 // reserves outgoing packet buffer. 808 // @return 1 if successful 809 bool hci_reserve_packet_buffer(void){ 810 if (hci_stack->hci_packet_buffer_reserved) { 811 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 812 return false; 813 } 814 hci_stack->hci_packet_buffer_reserved = true; 815 return true; 816 } 817 818 void hci_release_packet_buffer(void){ 819 hci_stack->hci_packet_buffer_reserved = false; 820 } 821 822 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 823 static int hci_transport_synchronous(void){ 824 return hci_stack->hci_transport->can_send_packet_now == NULL; 825 } 826 827 // used for debugging 828 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 829 static void hci_controller_dump_packets(void){ 830 // format: "{handle:04x}:{count:02d} " 831 char summaries[3][7 * 8 + 1]; 832 uint16_t totals[3]; 833 uint8_t index; 834 for (index = 0 ; index < 3 ; index++){ 835 summaries[index][0] = 0; 836 totals[index] = 0; 837 } 838 btstack_linked_item_t *it; 839 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 840 hci_connection_t * connection = (hci_connection_t *) it; 841 switch (connection->address_type){ 842 case BD_ADDR_TYPE_ACL: 843 index = 0; 844 break; 845 case BD_ADDR_TYPE_SCO: 846 index = 2; 847 break; 848 default: 849 index = 1; 850 break; 851 } 852 totals[index] += connection->num_packets_sent; 853 char item_text[10]; 854 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 855 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 856 } 857 for (index = 0 ; index < 3 ; index++){ 858 if (summaries[index][0] == 0){ 859 summaries[index][0] = '-'; 860 summaries[index][1] = 0; 861 } 862 } 863 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 864 } 865 #endif 866 867 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 868 869 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 870 871 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 872 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 873 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 874 max_acl_data_packet_length = hci_stack->le_data_packets_length; 875 } 876 877 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 878 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 879 max_acl_data_packet_length = connection->le_max_tx_octets; 880 } 881 #endif 882 883 log_debug("hci_send_acl_packet_fragments entered"); 884 885 uint8_t status = ERROR_CODE_SUCCESS; 886 // multiple packets could be send on a synchronous HCI transport 887 while (true){ 888 889 log_debug("hci_send_acl_packet_fragments loop entered"); 890 891 // get current data 892 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 893 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 894 bool more_fragments = false; 895 896 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 897 if (current_acl_data_packet_length > max_acl_data_packet_length){ 898 more_fragments = true; 899 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 900 } 901 902 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 903 if (acl_header_pos > 0u){ 904 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 905 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 906 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 907 } 908 909 // update header len 910 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 911 912 // count packet 913 connection->num_packets_sent++; 914 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 915 916 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 917 if (more_fragments){ 918 // update start of next fragment to send 919 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 920 } else { 921 // done 922 hci_stack->acl_fragmentation_pos = 0; 923 hci_stack->acl_fragmentation_total_size = 0; 924 } 925 926 // send packet 927 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 928 const int size = current_acl_data_packet_length + 4; 929 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 930 hci_stack->acl_fragmentation_tx_active = 1; 931 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 932 if (err != 0){ 933 // no error from HCI Transport expected 934 status = ERROR_CODE_HARDWARE_FAILURE; 935 } 936 937 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 938 hci_controller_dump_packets(); 939 #endif 940 941 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 942 943 // done yet? 944 if (!more_fragments) break; 945 946 // can send more? 947 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 948 } 949 950 log_debug("hci_send_acl_packet_fragments loop over"); 951 952 // release buffer now for synchronous transport 953 if (hci_transport_synchronous()){ 954 hci_stack->acl_fragmentation_tx_active = 0; 955 hci_release_packet_buffer(); 956 hci_emit_transport_packet_sent(); 957 } 958 959 return status; 960 } 961 962 // pre: caller has reserved the packet buffer 963 uint8_t hci_send_acl_packet_buffer(int size){ 964 btstack_assert(hci_stack->hci_packet_buffer_reserved); 965 966 uint8_t * packet = hci_stack->hci_packet_buffer; 967 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 968 969 hci_connection_t *connection = hci_connection_for_handle( con_handle); 970 if (!connection) { 971 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 972 hci_release_packet_buffer(); 973 hci_emit_transport_packet_sent(); 974 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 975 } 976 977 // check for free places on Bluetooth module 978 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 979 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 980 hci_release_packet_buffer(); 981 hci_emit_transport_packet_sent(); 982 return BTSTACK_ACL_BUFFERS_FULL; 983 } 984 985 #ifdef ENABLE_CLASSIC 986 hci_connection_timestamp(connection); 987 #endif 988 989 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 990 991 // setup data 992 hci_stack->acl_fragmentation_total_size = size; 993 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 994 995 return hci_send_acl_packet_fragments(connection); 996 } 997 998 #ifdef ENABLE_CLASSIC 999 // pre: caller has reserved the packet buffer 1000 uint8_t hci_send_sco_packet_buffer(int size){ 1001 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1002 1003 uint8_t * packet = hci_stack->hci_packet_buffer; 1004 1005 // skip checks in loopback mode 1006 if (!hci_stack->loopback_mode){ 1007 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1008 1009 // check for free places on Bluetooth module 1010 if (!hci_can_send_prepared_sco_packet_now()) { 1011 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1012 hci_release_packet_buffer(); 1013 hci_emit_transport_packet_sent(); 1014 return BTSTACK_ACL_BUFFERS_FULL; 1015 } 1016 1017 // track send packet in connection struct 1018 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1019 if (!connection) { 1020 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1021 hci_release_packet_buffer(); 1022 hci_emit_transport_packet_sent(); 1023 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1024 } 1025 1026 if (hci_have_usb_transport()){ 1027 // token used 1028 hci_stack->sco_can_send_now = false; 1029 } else { 1030 if (hci_stack->synchronous_flow_control_enabled){ 1031 connection->num_packets_sent++; 1032 } else { 1033 connection->sco_tx_ready--; 1034 } 1035 } 1036 } 1037 1038 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1039 1040 #ifdef HAVE_SCO_TRANSPORT 1041 hci_stack->sco_transport->send_packet(packet, size); 1042 hci_release_packet_buffer(); 1043 hci_emit_transport_packet_sent(); 1044 1045 return 0; 1046 #else 1047 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1048 if (hci_transport_synchronous()){ 1049 hci_release_packet_buffer(); 1050 hci_emit_transport_packet_sent(); 1051 } 1052 1053 if (err != 0){ 1054 return ERROR_CODE_HARDWARE_FAILURE; 1055 } 1056 return ERROR_CODE_SUCCESS; 1057 #endif 1058 } 1059 #endif 1060 1061 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1062 static uint8_t hci_send_iso_packet_fragments(void){ 1063 1064 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1065 uint8_t status = ERROR_CODE_SUCCESS; 1066 // multiple packets could be send on a synchronous HCI transport 1067 while (true){ 1068 1069 // get current data 1070 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1071 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1072 bool more_fragments = false; 1073 1074 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1075 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1076 more_fragments = true; 1077 current_iso_data_packet_length = max_iso_data_packet_length; 1078 } 1079 1080 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1081 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1082 uint8_t pb_flags; 1083 if (iso_header_pos == 0u){ 1084 // first fragment, keep TS field 1085 pb_flags = more_fragments ? 0x00 : 0x02; 1086 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1087 } else { 1088 // later fragment, drop TS field 1089 pb_flags = more_fragments ? 0x01 : 0x03; 1090 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1091 } 1092 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1093 1094 // update header len 1095 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1096 1097 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1098 if (more_fragments){ 1099 // update start of next fragment to send 1100 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1101 } else { 1102 // done 1103 hci_stack->iso_fragmentation_pos = 0; 1104 hci_stack->iso_fragmentation_total_size = 0; 1105 } 1106 1107 // send packet 1108 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1109 const int size = current_iso_data_packet_length + 4; 1110 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1111 hci_stack->iso_fragmentation_tx_active = true; 1112 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1113 if (err != 0){ 1114 // no error from HCI Transport expected 1115 status = ERROR_CODE_HARDWARE_FAILURE; 1116 } 1117 1118 // done yet? 1119 if (!more_fragments) break; 1120 1121 // can send more? 1122 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1123 } 1124 1125 // release buffer now for synchronous transport 1126 if (hci_transport_synchronous()){ 1127 hci_stack->iso_fragmentation_tx_active = false; 1128 hci_release_packet_buffer(); 1129 hci_emit_transport_packet_sent(); 1130 } 1131 1132 return status; 1133 } 1134 1135 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1136 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1137 1138 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1139 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1140 if (iso_stream == NULL){ 1141 hci_release_packet_buffer(); 1142 hci_iso_notify_can_send_now(); 1143 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1144 } 1145 1146 // TODO: check for space on controller 1147 1148 // skip iso packets if needed 1149 if (iso_stream->num_packets_to_skip > 0){ 1150 iso_stream->num_packets_to_skip--; 1151 // pretend it was processed and trigger next one 1152 hci_release_packet_buffer(); 1153 hci_iso_notify_can_send_now(); 1154 return ERROR_CODE_SUCCESS; 1155 } 1156 1157 // track outgoing packet sent 1158 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1159 iso_stream->num_packets_sent++; 1160 1161 // setup data 1162 hci_stack->iso_fragmentation_total_size = size; 1163 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1164 1165 return hci_send_iso_packet_fragments(); 1166 } 1167 #endif 1168 1169 static void acl_handler(uint8_t *packet, uint16_t size){ 1170 1171 // get info 1172 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1173 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1174 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1175 uint16_t acl_length = READ_ACL_LENGTH(packet); 1176 1177 // ignore non-registered handle 1178 if (!conn){ 1179 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1180 return; 1181 } 1182 1183 // assert packet is complete 1184 if ((acl_length + 4u) != size){ 1185 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1186 return; 1187 } 1188 1189 #ifdef ENABLE_CLASSIC 1190 // update idle timestamp 1191 hci_connection_timestamp(conn); 1192 #endif 1193 1194 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1195 hci_stack->host_completed_packets = 1; 1196 conn->num_packets_completed++; 1197 #endif 1198 1199 // handle different packet types 1200 switch (acl_flags & 0x03u) { 1201 1202 case 0x01: // continuation fragment 1203 1204 // sanity checks 1205 if (conn->acl_recombination_pos == 0u) { 1206 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1207 return; 1208 } 1209 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1210 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1211 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1212 conn->acl_recombination_pos = 0; 1213 return; 1214 } 1215 1216 // append fragment payload (header already stored) 1217 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1218 &packet[4], acl_length); 1219 conn->acl_recombination_pos += acl_length; 1220 1221 // forward complete L2CAP packet if complete. 1222 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1223 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1224 // reset recombination buffer 1225 conn->acl_recombination_length = 0; 1226 conn->acl_recombination_pos = 0; 1227 } 1228 break; 1229 1230 case 0x02: { // first fragment 1231 1232 // sanity check 1233 if (conn->acl_recombination_pos) { 1234 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1235 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1236 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1237 } 1238 conn->acl_recombination_pos = 0; 1239 } 1240 1241 // peek into L2CAP packet! 1242 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1243 1244 // compare fragment size to L2CAP packet size 1245 if (acl_length >= (l2cap_length + 4u)){ 1246 // forward fragment as L2CAP packet 1247 hci_emit_acl_packet(packet, acl_length + 4u); 1248 } else { 1249 1250 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1251 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1252 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1253 return; 1254 } 1255 1256 // store first fragment and tweak acl length for complete package 1257 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1258 packet, acl_length + 4u); 1259 conn->acl_recombination_pos = acl_length + 4u; 1260 conn->acl_recombination_length = l2cap_length; 1261 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1262 } 1263 break; 1264 1265 } 1266 default: 1267 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1268 return; 1269 } 1270 1271 // execute main loop 1272 hci_run(); 1273 } 1274 1275 static void hci_connection_stop_timer(hci_connection_t * conn){ 1276 btstack_run_loop_remove_timer(&conn->timeout); 1277 #ifdef ENABLE_CLASSIC 1278 btstack_run_loop_remove_timer(&conn->timeout_sco); 1279 #endif 1280 } 1281 1282 static void hci_shutdown_connection(hci_connection_t *conn){ 1283 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1284 1285 #ifdef ENABLE_CLASSIC 1286 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1287 bd_addr_type_t addr_type = conn->address_type; 1288 #endif 1289 #ifdef HAVE_SCO_TRANSPORT 1290 hci_con_handle_t con_handle = conn->con_handle; 1291 #endif 1292 #endif 1293 1294 hci_connection_stop_timer(conn); 1295 1296 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1297 btstack_memory_hci_connection_free( conn ); 1298 1299 // now it's gone 1300 hci_emit_nr_connections_changed(); 1301 1302 #ifdef ENABLE_CLASSIC 1303 #ifdef ENABLE_SCO_OVER_HCI 1304 // update SCO 1305 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1306 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1307 } 1308 #endif 1309 #ifdef HAVE_SCO_TRANSPORT 1310 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1311 hci_stack->sco_transport->close(con_handle); 1312 } 1313 #endif 1314 #endif 1315 } 1316 1317 #ifdef ENABLE_CLASSIC 1318 1319 static const uint16_t hci_acl_packet_type_sizes[] = { 1320 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1321 HCI_ACL_DH1_SIZE, 0, 0, 0, 1322 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1323 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1324 }; 1325 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1326 0, // 3 slot packets 1327 1, // 5 slot packets 1328 25, // EDR 2 mpbs 1329 26, // EDR 3 mbps 1330 39, // 3 slot EDR packts 1331 40, // 5 slot EDR packet 1332 }; 1333 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1334 0x0f00, // 3 slot packets 1335 0xf000, // 5 slot packets 1336 0x1102, // EDR 2 mpbs 1337 0x2204, // EDR 3 mbps 1338 0x0300, // 3 slot EDR packts 1339 0x3000, // 5 slot EDR packet 1340 }; 1341 1342 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1343 // enable packet types based on size 1344 uint16_t packet_types = 0; 1345 unsigned int i; 1346 for (i=0;i<16;i++){ 1347 if (hci_acl_packet_type_sizes[i] == 0) continue; 1348 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1349 packet_types |= 1 << i; 1350 } 1351 } 1352 // disable packet types due to missing local supported features 1353 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1354 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1355 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1356 if (feature_set) continue; 1357 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1358 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1359 } 1360 return packet_types; 1361 } 1362 1363 uint16_t hci_usable_acl_packet_types(void){ 1364 // flip bits for "may not be used" 1365 return hci_stack->usable_packet_types_acl ^ 0x3306; 1366 } 1367 1368 static const struct { 1369 uint8_t feature_index; 1370 uint16_t feature_packet_mask; 1371 } hci_sco_packet_type_feature_requirements[] = { 1372 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1373 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1374 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1375 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1376 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1377 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1378 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1379 }; 1380 1381 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1382 static const struct { 1383 uint16_t type; 1384 uint16_t payload_length; 1385 } hci_sco_packet_type_to_payload_length[] = { 1386 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1387 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1388 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1389 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1390 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1391 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1392 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1393 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1394 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1395 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1396 }; 1397 1398 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1399 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1400 unsigned int i; 1401 // disable packet types due to missing local supported features 1402 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1403 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1404 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1405 if (feature_set) continue; 1406 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); 1407 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1408 } 1409 return packet_types; 1410 } 1411 1412 uint16_t hci_usable_sco_packet_types(void){ 1413 return hci_stack->usable_packet_types_sco; 1414 } 1415 1416 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1417 uint8_t i; 1418 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1419 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1420 return hci_sco_packet_type_to_payload_length[i].payload_length; 1421 } 1422 } 1423 return 0; 1424 } 1425 1426 #endif 1427 1428 uint8_t* hci_get_outgoing_packet_buffer(void){ 1429 // hci packet buffer is >= acl data packet length 1430 return hci_stack->hci_packet_buffer; 1431 } 1432 1433 uint16_t hci_max_acl_data_packet_length(void){ 1434 return hci_stack->acl_data_packet_length; 1435 } 1436 1437 #ifdef ENABLE_CLASSIC 1438 bool hci_extended_sco_link_supported(void){ 1439 // No. 31, byte 3, bit 7 1440 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1441 } 1442 #endif 1443 1444 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1445 // No. 54, byte 6, bit 6 1446 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1447 } 1448 1449 #ifdef ENABLE_CLASSIC 1450 static int gap_ssp_supported(void){ 1451 // No. 51, byte 6, bit 3 1452 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1453 } 1454 #endif 1455 1456 static int hci_classic_supported(void){ 1457 #ifdef ENABLE_CLASSIC 1458 // No. 37, byte 4, bit 5, = No BR/EDR Support 1459 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1460 #else 1461 return 0; 1462 #endif 1463 } 1464 1465 static int hci_le_supported(void){ 1466 #ifdef ENABLE_BLE 1467 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1468 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1469 #else 1470 return 0; 1471 #endif 1472 } 1473 1474 static bool hci_command_supported(uint8_t command_index){ 1475 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1476 } 1477 1478 #ifdef ENABLE_BLE 1479 1480 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1481 static bool hci_extended_advertising_supported(void){ 1482 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1483 } 1484 #endif 1485 1486 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1487 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1488 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1489 } else { 1490 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1491 } 1492 } 1493 1494 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1495 *addr_type = hci_stack->le_own_addr_type; 1496 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1497 } 1498 1499 #ifdef ENABLE_LE_PERIPHERAL 1500 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1501 *addr_type = hci_stack->le_advertisements_own_addr_type; 1502 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1503 }; 1504 #endif 1505 1506 #ifdef ENABLE_LE_CENTRAL 1507 1508 /** 1509 * @brief Get own addr type and address used for LE connections (Central) 1510 */ 1511 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1512 *addr_type = hci_stack->le_connection_own_addr_type; 1513 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1514 } 1515 1516 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1517 1518 uint16_t offset = 3; 1519 uint8_t num_reports = packet[offset]; 1520 offset += 1; 1521 1522 uint16_t i; 1523 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1524 for (i=0; (i<num_reports) && (offset < size);i++){ 1525 // sanity checks on data_length: 1526 uint8_t data_length = packet[offset + 8]; 1527 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1528 if ((offset + 9u + data_length + 1u) > size) return; 1529 // setup event 1530 uint8_t event_size = 10u + data_length; 1531 uint16_t pos = 0; 1532 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1533 event[pos++] = event_size; 1534 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1535 offset += 8; 1536 pos += 8; 1537 event[pos++] = packet[offset + 1 + data_length]; // rssi 1538 event[pos++] = data_length; 1539 offset++; 1540 (void)memcpy(&event[pos], &packet[offset], data_length); 1541 pos += data_length; 1542 offset += data_length + 1u; // rssi 1543 hci_emit_event(event, pos, 1); 1544 } 1545 } 1546 1547 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1548 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1549 uint16_t offset = 3; 1550 uint8_t num_reports = packet[offset++]; 1551 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1552 uint8_t i; 1553 for (i=0; (i<num_reports) && (offset < size);i++){ 1554 // sanity checks on data_length: 1555 uint16_t data_length = packet[offset + 23]; 1556 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1557 if ((offset + 24u + data_length) > size) return; 1558 uint16_t event_type = little_endian_read_16(packet, offset); 1559 offset += 2; 1560 if ((event_type & 0x10) != 0) { 1561 // setup legacy event 1562 uint8_t legacy_event_type; 1563 switch (event_type){ 1564 case 0b0010011: 1565 // ADV_IND 1566 legacy_event_type = 0; 1567 break; 1568 case 0b0010101: 1569 // ADV_DIRECT_IND 1570 legacy_event_type = 1; 1571 break; 1572 case 0b0010010: 1573 // ADV_SCAN_IND 1574 legacy_event_type = 2; 1575 break; 1576 case 0b0010000: 1577 // ADV_NONCONN_IND 1578 legacy_event_type = 3; 1579 break; 1580 case 0b0011011: 1581 case 0b0011010: 1582 // SCAN_RSP 1583 legacy_event_type = 4; 1584 break; 1585 default: 1586 legacy_event_type = 0; 1587 break; 1588 } 1589 uint16_t pos = 0; 1590 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1591 event[pos++] = 10u + data_length; 1592 event[pos++] = legacy_event_type; 1593 // copy address type + address 1594 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1595 offset += 7; 1596 pos += 7; 1597 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1598 offset += 4; 1599 // copy rssi 1600 event[pos++] = packet[offset++]; 1601 // skip periodic advertising interval and direct address 1602 offset += 9; 1603 // copy data len + data; 1604 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1605 pos += 1 +data_length; 1606 offset += 1+ data_length; 1607 hci_emit_event(event, pos, 1); 1608 } else { 1609 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1610 uint8_t report_len = 24 + data_length; 1611 event[1] = report_len; 1612 little_endian_store_16(event, 2, event_type); 1613 memcpy(&event[4], &packet[offset], report_len); 1614 offset += report_len; 1615 hci_emit_event(event, 2 + report_len, 1); 1616 } 1617 } 1618 } 1619 #endif 1620 1621 #endif 1622 #endif 1623 1624 #ifdef ENABLE_BLE 1625 #ifdef ENABLE_LE_PERIPHERAL 1626 static void hci_update_advertisements_enabled_for_current_roles(void){ 1627 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1628 // get number of active le slave connections 1629 int num_slave_connections = 0; 1630 btstack_linked_list_iterator_t it; 1631 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1632 while (btstack_linked_list_iterator_has_next(&it)){ 1633 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1634 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1635 if (con->state != OPEN) continue; 1636 if (con->role != HCI_ROLE_SLAVE) continue; 1637 if (!hci_is_le_connection(con)) continue; 1638 num_slave_connections++; 1639 } 1640 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1641 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1642 } else { 1643 hci_stack->le_advertisements_enabled_for_current_roles = false; 1644 } 1645 } 1646 #endif 1647 #endif 1648 1649 #ifdef ENABLE_CLASSIC 1650 static void gap_run_set_local_name(void){ 1651 hci_reserve_packet_buffer(); 1652 uint8_t * packet = hci_stack->hci_packet_buffer; 1653 // construct HCI Command and send 1654 uint16_t opcode = hci_write_local_name.opcode; 1655 hci_stack->last_cmd_opcode = opcode; 1656 packet[0] = opcode & 0xff; 1657 packet[1] = opcode >> 8; 1658 packet[2] = DEVICE_NAME_LEN; 1659 memset(&packet[3], 0, DEVICE_NAME_LEN); 1660 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1661 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1662 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1663 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1664 // expand '00:00:00:00:00:00' in name with bd_addr 1665 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1666 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1667 } 1668 1669 static void gap_run_set_eir_data(void){ 1670 hci_reserve_packet_buffer(); 1671 uint8_t * packet = hci_stack->hci_packet_buffer; 1672 // construct HCI Command in-place and send 1673 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1674 hci_stack->last_cmd_opcode = opcode; 1675 uint16_t offset = 0; 1676 packet[offset++] = opcode & 0xff; 1677 packet[offset++] = opcode >> 8; 1678 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1679 packet[offset++] = 0; // FEC not required 1680 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1681 if (hci_stack->eir_data){ 1682 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1683 ad_context_t context; 1684 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1685 uint8_t data_type = ad_iterator_get_data_type(&context); 1686 uint8_t size = ad_iterator_get_data_len(&context); 1687 const uint8_t *data = ad_iterator_get_data(&context); 1688 // copy item 1689 packet[offset++] = size + 1; 1690 packet[offset++] = data_type; 1691 memcpy(&packet[offset], data, size); 1692 // update name item 1693 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1694 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1695 } 1696 offset += size; 1697 } 1698 } else { 1699 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1700 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1701 packet[offset++] = bytes_to_copy + 1; 1702 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1703 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1704 // expand '00:00:00:00:00:00' in name with bd_addr 1705 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1706 } 1707 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1708 } 1709 1710 static void hci_run_gap_tasks_classic(void){ 1711 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1712 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1713 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1714 return; 1715 } 1716 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1717 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1718 gap_run_set_local_name(); 1719 return; 1720 } 1721 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1722 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1723 gap_run_set_eir_data(); 1724 return; 1725 } 1726 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1727 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1728 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1729 return; 1730 } 1731 // write page scan activity 1732 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1733 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1734 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1735 return; 1736 } 1737 // write page scan type 1738 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1739 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1740 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1741 return; 1742 } 1743 // write page timeout 1744 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1745 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1746 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1747 return; 1748 } 1749 // send scan enable 1750 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1751 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1752 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1753 return; 1754 } 1755 // send write scan activity 1756 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1757 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1758 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1759 return; 1760 } 1761 // send write inquiry transmit power level 1762 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1763 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1764 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1765 return; 1766 } 1767 } 1768 #endif 1769 1770 #ifndef HAVE_HOST_CONTROLLER_API 1771 1772 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1773 if (!hci_stack->config) return 0; 1774 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1775 // Limit baud rate for Broadcom chipsets to 3 mbps 1776 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1777 baud_rate = 3000000; 1778 } 1779 return baud_rate; 1780 } 1781 1782 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1783 UNUSED(ds); 1784 1785 switch (hci_stack->substate){ 1786 case HCI_INIT_W4_SEND_RESET: 1787 log_info("Resend HCI Reset"); 1788 hci_stack->substate = HCI_INIT_SEND_RESET; 1789 hci_stack->num_cmd_packets = 1; 1790 hci_run(); 1791 break; 1792 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1793 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1794 if (hci_stack->hci_transport->reset_link){ 1795 hci_stack->hci_transport->reset_link(); 1796 } 1797 1798 /* fall through */ 1799 1800 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1801 log_info("Resend HCI Reset - CSR Warm Boot"); 1802 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1803 hci_stack->num_cmd_packets = 1; 1804 hci_run(); 1805 break; 1806 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1807 if (hci_stack->hci_transport->set_baudrate){ 1808 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1809 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1810 hci_stack->hci_transport->set_baudrate(baud_rate); 1811 } 1812 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1813 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1814 if (hci_stack->hci_transport->reset_link){ 1815 log_info("Link Reset"); 1816 hci_stack->hci_transport->reset_link(); 1817 } 1818 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1819 hci_run(); 1820 } 1821 break; 1822 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1823 // otherwise continue 1824 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1825 hci_send_cmd(&hci_read_local_supported_commands); 1826 break; 1827 default: 1828 break; 1829 } 1830 } 1831 #endif 1832 1833 static void hci_initializing_next_state(void){ 1834 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1835 } 1836 1837 static void hci_init_done(void){ 1838 // done. tell the app 1839 log_info("hci_init_done -> HCI_STATE_WORKING"); 1840 hci_stack->state = HCI_STATE_WORKING; 1841 hci_emit_state(); 1842 } 1843 1844 // assumption: hci_can_send_command_packet_now() == true 1845 static void hci_initializing_run(void){ 1846 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1847 1848 if (!hci_can_send_command_packet_now()) return; 1849 1850 #ifndef HAVE_HOST_CONTROLLER_API 1851 bool need_baud_change = hci_stack->config 1852 && hci_stack->chipset 1853 && hci_stack->chipset->set_baudrate_command 1854 && hci_stack->hci_transport->set_baudrate 1855 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1856 #endif 1857 1858 switch (hci_stack->substate){ 1859 case HCI_INIT_SEND_RESET: 1860 hci_state_reset(); 1861 1862 #ifndef HAVE_HOST_CONTROLLER_API 1863 // prepare reset if command complete not received in 100ms 1864 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1865 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1866 btstack_run_loop_add_timer(&hci_stack->timeout); 1867 #endif 1868 // send command 1869 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1870 hci_send_cmd(&hci_reset); 1871 break; 1872 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1873 hci_send_cmd(&hci_read_local_version_information); 1874 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1875 break; 1876 1877 #ifndef HAVE_HOST_CONTROLLER_API 1878 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1879 hci_state_reset(); 1880 // prepare reset if command complete not received in 100ms 1881 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1882 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1883 btstack_run_loop_add_timer(&hci_stack->timeout); 1884 // send command 1885 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1886 hci_send_cmd(&hci_reset); 1887 break; 1888 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1889 hci_state_reset(); 1890 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1891 hci_send_cmd(&hci_reset); 1892 break; 1893 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1894 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1895 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1896 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1897 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1898 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1899 break; 1900 } 1901 case HCI_INIT_SET_BD_ADDR: 1902 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1903 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1904 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1905 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1906 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1907 break; 1908 case HCI_INIT_SEND_READ_LOCAL_NAME: 1909 #ifdef ENABLE_CLASSIC 1910 hci_send_cmd(&hci_read_local_name); 1911 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1912 break; 1913 #endif 1914 /* fall through */ 1915 1916 case HCI_INIT_SEND_BAUD_CHANGE: 1917 if (need_baud_change) { 1918 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1919 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1920 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1921 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1922 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1923 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1924 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1925 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1926 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1927 btstack_run_loop_add_timer(&hci_stack->timeout); 1928 } 1929 break; 1930 } 1931 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1932 1933 /* fall through */ 1934 1935 case HCI_INIT_CUSTOM_INIT: 1936 case HCI_INIT_CUSTOM_PRE_INIT: 1937 // Custom initialization 1938 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1939 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1940 bool send_cmd = false; 1941 switch (hci_stack->chipset_result){ 1942 case BTSTACK_CHIPSET_VALID_COMMAND: 1943 send_cmd = true; 1944 switch (hci_stack->substate){ 1945 case HCI_INIT_CUSTOM_INIT: 1946 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1947 break; 1948 case HCI_INIT_CUSTOM_PRE_INIT: 1949 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1950 break; 1951 default: 1952 btstack_assert(false); 1953 break; 1954 } 1955 break; 1956 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1957 send_cmd = true; 1958 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1959 log_info("CSR Warm Boot"); 1960 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1961 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1962 btstack_run_loop_add_timer(&hci_stack->timeout); 1963 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1964 && hci_stack->config 1965 && hci_stack->chipset 1966 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1967 && hci_stack->hci_transport->set_baudrate 1968 && hci_transport_uart_get_main_baud_rate()){ 1969 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1970 } else { 1971 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1972 } 1973 break; 1974 default: 1975 break; 1976 } 1977 1978 if (send_cmd){ 1979 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1980 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1981 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1982 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1983 break; 1984 } 1985 log_info("Init script done"); 1986 1987 // Custom Pre-Init complete, start regular init with HCI Reset 1988 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1989 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1990 hci_send_cmd(&hci_reset); 1991 break; 1992 } 1993 1994 // Init script download on Broadcom chipsets causes: 1995 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1996 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1997 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1998 1999 // - baud rate to reset, restore UART baud rate if needed 2000 if (need_baud_change) { 2001 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2002 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2003 hci_stack->hci_transport->set_baudrate(baud_rate); 2004 } 2005 2006 uint16_t bcm_delay_ms = 300; 2007 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2008 // -> Work around: wait here. 2009 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2010 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2011 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2012 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2013 btstack_run_loop_add_timer(&hci_stack->timeout); 2014 break; 2015 } 2016 } 2017 #endif 2018 /* fall through */ 2019 2020 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2021 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2022 hci_send_cmd(&hci_read_local_supported_commands); 2023 break; 2024 case HCI_INIT_READ_BD_ADDR: 2025 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2026 hci_send_cmd(&hci_read_bd_addr); 2027 break; 2028 case HCI_INIT_READ_BUFFER_SIZE: 2029 // only read buffer size if supported 2030 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2031 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2032 hci_send_cmd(&hci_read_buffer_size); 2033 break; 2034 } 2035 2036 /* fall through */ 2037 2038 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2039 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2040 hci_send_cmd(&hci_read_local_supported_features); 2041 break; 2042 2043 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2044 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2045 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2046 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2047 break; 2048 case HCI_INIT_HOST_BUFFER_SIZE: 2049 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2050 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2051 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2052 break; 2053 #endif 2054 2055 case HCI_INIT_SET_EVENT_MASK: 2056 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2057 if (hci_le_supported()){ 2058 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2059 } else { 2060 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2061 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2062 } 2063 break; 2064 2065 case HCI_INIT_SET_EVENT_MASK_2: 2066 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2067 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2068 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2069 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2070 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2071 // Encryption Change Event v2 - bit 25 2072 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2073 break; 2074 } 2075 2076 #ifdef ENABLE_CLASSIC 2077 /* fall through */ 2078 2079 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2080 if (hci_classic_supported() && gap_ssp_supported()){ 2081 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2082 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2083 break; 2084 } 2085 2086 /* fall through */ 2087 2088 case HCI_INIT_WRITE_INQUIRY_MODE: 2089 if (hci_classic_supported()){ 2090 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2091 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2092 break; 2093 } 2094 2095 /* fall through */ 2096 2097 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2098 // skip write secure connections host support if not supported or disabled 2099 if (hci_classic_supported() && hci_stack->secure_connections_enable 2100 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2101 hci_stack->secure_connections_active = true; 2102 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2103 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2104 break; 2105 } 2106 2107 /* fall through */ 2108 2109 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2110 // skip set min encryption key size 2111 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2112 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2113 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2114 break; 2115 } 2116 2117 #ifdef ENABLE_SCO_OVER_HCI 2118 /* fall through */ 2119 2120 // only sent if ENABLE_SCO_OVER_HCI is defined 2121 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2122 // skip write synchronous flow control if not supported 2123 if (hci_classic_supported() 2124 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2125 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2126 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2127 break; 2128 } 2129 /* fall through */ 2130 2131 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2132 // skip write default erroneous data reporting if not supported 2133 if (hci_classic_supported() 2134 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2135 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2136 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2137 break; 2138 } 2139 #endif 2140 2141 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2142 /* fall through */ 2143 2144 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2145 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2146 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2147 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2148 #ifdef ENABLE_SCO_OVER_HCI 2149 log_info("BCM: Route SCO data via HCI transport"); 2150 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2151 #endif 2152 #ifdef ENABLE_SCO_OVER_PCM 2153 log_info("BCM: Route SCO data via PCM interface"); 2154 #ifdef ENABLE_BCM_PCM_WBS 2155 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2156 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2157 #else 2158 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2159 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2160 #endif 2161 #endif 2162 break; 2163 } 2164 #endif 2165 2166 #ifdef ENABLE_SCO_OVER_PCM 2167 /* fall through */ 2168 2169 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2170 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2171 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2172 log_info("BCM: Config PCM interface for I2S"); 2173 #ifdef ENABLE_BCM_PCM_WBS 2174 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2175 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2176 #else 2177 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2178 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2179 #endif 2180 break; 2181 } 2182 #endif 2183 #endif 2184 2185 #ifdef ENABLE_BLE 2186 /* fall through */ 2187 2188 // LE INIT 2189 case HCI_INIT_LE_READ_BUFFER_SIZE: 2190 if (hci_le_supported()){ 2191 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2192 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2193 hci_send_cmd(&hci_le_read_buffer_size_v2); 2194 } else { 2195 hci_send_cmd(&hci_le_read_buffer_size); 2196 } 2197 break; 2198 } 2199 2200 /* fall through */ 2201 2202 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2203 // skip write le host if not supported (e.g. on LE only EM9301) 2204 if (hci_le_supported() 2205 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2206 // LE Supported Host = 1, Simultaneous Host = 0 2207 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2208 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2209 break; 2210 } 2211 2212 /* fall through */ 2213 2214 case HCI_INIT_LE_SET_EVENT_MASK: 2215 if (hci_le_supported()){ 2216 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2217 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2218 break; 2219 } 2220 #endif 2221 2222 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2223 /* fall through */ 2224 2225 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2226 if (hci_le_supported() 2227 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2228 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2229 hci_send_cmd(&hci_le_read_maximum_data_length); 2230 break; 2231 } 2232 2233 /* fall through */ 2234 2235 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2236 if (hci_le_supported() 2237 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2238 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2239 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2240 break; 2241 } 2242 #endif 2243 2244 #ifdef ENABLE_LE_CENTRAL 2245 /* fall through */ 2246 2247 case HCI_INIT_READ_WHITE_LIST_SIZE: 2248 if (hci_le_supported()){ 2249 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2250 hci_send_cmd(&hci_le_read_white_list_size); 2251 break; 2252 } 2253 2254 #endif 2255 2256 #ifdef ENABLE_LE_PERIPHERAL 2257 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2258 /* fall through */ 2259 2260 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2261 if (hci_extended_advertising_supported()){ 2262 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2263 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2264 break; 2265 } 2266 #endif 2267 #endif 2268 /* fall through */ 2269 2270 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2271 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2272 if (hci_le_supported()) { 2273 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2274 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2275 break; 2276 } 2277 #endif 2278 2279 /* fall through */ 2280 2281 case HCI_INIT_DONE: 2282 hci_stack->substate = HCI_INIT_DONE; 2283 // main init sequence complete 2284 #ifdef ENABLE_CLASSIC 2285 // check if initial Classic GAP Tasks are completed 2286 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2287 hci_run_gap_tasks_classic(); 2288 break; 2289 } 2290 #endif 2291 #ifdef ENABLE_BLE 2292 #ifdef ENABLE_LE_CENTRAL 2293 // check if initial LE GAP Tasks are completed 2294 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2295 hci_run_general_gap_le(); 2296 break; 2297 } 2298 #endif 2299 #endif 2300 hci_init_done(); 2301 break; 2302 2303 default: 2304 return; 2305 } 2306 } 2307 2308 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2309 bool command_completed = false; 2310 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2311 uint16_t opcode = little_endian_read_16(packet,3); 2312 if (opcode == hci_stack->last_cmd_opcode){ 2313 command_completed = true; 2314 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2315 } else { 2316 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2317 } 2318 } 2319 2320 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2321 uint8_t status = packet[2]; 2322 uint16_t opcode = little_endian_read_16(packet,4); 2323 if (opcode == hci_stack->last_cmd_opcode){ 2324 if (status){ 2325 command_completed = true; 2326 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2327 } else { 2328 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2329 } 2330 } else { 2331 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2332 } 2333 } 2334 #ifndef HAVE_HOST_CONTROLLER_API 2335 // Vendor == CSR 2336 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2337 // TODO: track actual command 2338 command_completed = true; 2339 } 2340 2341 // Vendor == Toshiba 2342 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2343 // TODO: track actual command 2344 command_completed = true; 2345 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2346 hci_stack->num_cmd_packets = 1; 2347 } 2348 #endif 2349 2350 return command_completed; 2351 } 2352 2353 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2354 2355 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2356 2357 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2358 2359 #ifndef HAVE_HOST_CONTROLLER_API 2360 2361 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2362 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2363 // 2364 // HCI Reset 2365 // Timeout 100 ms 2366 // HCI Reset 2367 // Command Complete Reset 2368 // HCI Read Local Version Information 2369 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2370 // hang... 2371 // 2372 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2373 if (!command_completed 2374 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2375 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2376 2377 uint16_t opcode = little_endian_read_16(packet,3); 2378 if (opcode == hci_reset.opcode){ 2379 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2380 return; 2381 } 2382 } 2383 2384 // CSR & H5 2385 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2386 if (!command_completed 2387 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2388 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2389 2390 uint16_t opcode = little_endian_read_16(packet,3); 2391 if (opcode == hci_reset.opcode){ 2392 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2393 return; 2394 } 2395 } 2396 2397 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2398 // fix: Correct substate and behave as command below 2399 if (command_completed){ 2400 switch (hci_stack->substate){ 2401 case HCI_INIT_SEND_RESET: 2402 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2403 break; 2404 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2405 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2406 break; 2407 default: 2408 break; 2409 } 2410 } 2411 2412 #endif 2413 2414 if (!command_completed) return; 2415 2416 bool need_baud_change = false; 2417 bool need_addr_change = false; 2418 2419 #ifndef HAVE_HOST_CONTROLLER_API 2420 need_baud_change = hci_stack->config 2421 && hci_stack->chipset 2422 && hci_stack->chipset->set_baudrate_command 2423 && hci_stack->hci_transport->set_baudrate 2424 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2425 2426 need_addr_change = hci_stack->custom_bd_addr_set 2427 && hci_stack->chipset 2428 && hci_stack->chipset->set_bd_addr_command; 2429 #endif 2430 2431 switch(hci_stack->substate){ 2432 2433 #ifndef HAVE_HOST_CONTROLLER_API 2434 case HCI_INIT_SEND_RESET: 2435 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2436 // fix: just correct substate and behave as command below 2437 2438 /* fall through */ 2439 #endif 2440 2441 case HCI_INIT_W4_SEND_RESET: 2442 btstack_run_loop_remove_timer(&hci_stack->timeout); 2443 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2444 return; 2445 2446 #ifndef HAVE_HOST_CONTROLLER_API 2447 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2448 // for STLC2500D, baud rate change already happened. 2449 // for others, baud rate gets changed now 2450 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2451 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2452 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2453 hci_stack->hci_transport->set_baudrate(baud_rate); 2454 } 2455 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2456 return; 2457 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2458 btstack_run_loop_remove_timer(&hci_stack->timeout); 2459 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2460 return; 2461 case HCI_INIT_W4_CUSTOM_INIT: 2462 // repeat custom init 2463 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2464 return; 2465 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2466 // repeat custom init 2467 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2468 return; 2469 #endif 2470 2471 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2472 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2473 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2474 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2475 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2476 return; 2477 } 2478 if (need_addr_change){ 2479 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2480 return; 2481 } 2482 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2483 return; 2484 #ifndef HAVE_HOST_CONTROLLER_API 2485 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2486 if (need_baud_change){ 2487 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2488 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2489 hci_stack->hci_transport->set_baudrate(baud_rate); 2490 } 2491 if (need_addr_change){ 2492 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2493 return; 2494 } 2495 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2496 return; 2497 case HCI_INIT_W4_SET_BD_ADDR: 2498 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2499 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2500 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2501 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2502 return; 2503 } 2504 // skipping st warm boot 2505 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2506 return; 2507 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2508 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2509 return; 2510 #endif 2511 2512 case HCI_INIT_DONE: 2513 // set state if we came here by fall through 2514 hci_stack->substate = HCI_INIT_DONE; 2515 return; 2516 2517 default: 2518 break; 2519 } 2520 hci_initializing_next_state(); 2521 } 2522 2523 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2524 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2525 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2526 // check if we have been aware of the HCI connection 2527 switch (conn->state){ 2528 case SENT_CREATE_CONNECTION: 2529 case RECEIVED_CONNECTION_REQUEST: 2530 case ACCEPTED_CONNECTION_REQUEST: 2531 break; 2532 default: 2533 return; 2534 } 2535 2536 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2537 bd_addr_t bd_address; 2538 (void)memcpy(&bd_address, conn->address, 6); 2539 2540 #ifdef ENABLE_CLASSIC 2541 // cache needed data 2542 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2543 #endif 2544 2545 // connection failed, remove entry 2546 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2547 btstack_memory_hci_connection_free( conn ); 2548 2549 #ifdef ENABLE_CLASSIC 2550 // notify client if dedicated bonding 2551 if (notify_dedicated_bonding_failed){ 2552 log_info("hci notify_dedicated_bonding_failed"); 2553 hci_emit_dedicated_bonding_result(bd_address, status); 2554 } 2555 2556 // if authentication error, also delete link key 2557 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2558 gap_drop_link_key_for_bd_addr(bd_address); 2559 } 2560 #else 2561 UNUSED(status); 2562 #endif 2563 } 2564 2565 #ifdef ENABLE_CLASSIC 2566 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2567 // SSP Controller 2568 if (features[6] & (1 << 3)){ 2569 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2570 } 2571 // eSCO 2572 if (features[3] & (1<<7)){ 2573 conn->remote_supported_features[0] |= 1; 2574 } 2575 // Extended features 2576 if (features[7] & (1<<7)){ 2577 conn->remote_supported_features[0] |= 2; 2578 } 2579 // SCO packet types 2580 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2581 } 2582 2583 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2584 // SSP Host 2585 if (features[0] & (1 << 0)){ 2586 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2587 } 2588 // SC Host 2589 if (features[0] & (1 << 3)){ 2590 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2591 } 2592 } 2593 2594 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2595 // SC Controller 2596 if (features[1] & (1 << 0)){ 2597 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2598 } 2599 } 2600 2601 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2602 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2603 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2604 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2605 if (conn->bonding_flags & BONDING_DEDICATED){ 2606 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2607 } 2608 } 2609 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2610 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2611 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2612 } 2613 2614 #endif 2615 2616 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2617 // handle BT initialization 2618 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2619 hci_initializing_event_handler(packet, size); 2620 } 2621 2622 // help with BT sleep 2623 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2624 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2625 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2626 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2627 hci_initializing_next_state(); 2628 } 2629 } 2630 2631 #ifdef ENABLE_CLASSIC 2632 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2633 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2634 conn->requested_security_level = LEVEL_0; 2635 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2636 hci_emit_security_level(conn->con_handle, security_level); 2637 2638 // dedicated bonding 2639 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2640 conn->bonding_flags &= ~BONDING_DEDICATED; 2641 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2642 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2643 // emit dedicated bonding complete, don't disconnect 2644 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2645 #else 2646 // request disconnect, event is emitted after disconnect 2647 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2648 #endif 2649 } 2650 } 2651 2652 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2653 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2654 conn->encryption_key_size = encryption_key_size; 2655 2656 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2657 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2658 hci_handle_mutual_authentication_completed(conn); 2659 } else { 2660 // otherwise trigger remote feature request and send authentication request 2661 hci_trigger_remote_features_for_connection(conn); 2662 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2663 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2664 } 2665 } 2666 } 2667 #endif 2668 2669 static void hci_store_local_supported_commands(const uint8_t * packet){ 2670 // create mapping table 2671 #define X(name, offset, bit) { offset, bit }, 2672 static struct { 2673 uint8_t byte_offset; 2674 uint8_t bit_position; 2675 } supported_hci_commands_map [] = { 2676 SUPPORTED_HCI_COMMANDS 2677 }; 2678 #undef X 2679 2680 // create names for debug purposes 2681 #ifdef ENABLE_LOG_DEBUG 2682 #define X(name, offset, bit) #name, 2683 static const char * command_names[] = { 2684 SUPPORTED_HCI_COMMANDS 2685 }; 2686 #undef X 2687 #endif 2688 2689 hci_stack->local_supported_commands = 0; 2690 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2691 uint16_t i; 2692 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2693 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2694 #ifdef ENABLE_LOG_DEBUG 2695 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); 2696 #else 2697 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2698 #endif 2699 hci_stack->local_supported_commands |= (1LU << i); 2700 } 2701 } 2702 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2703 } 2704 2705 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2706 UNUSED(size); 2707 2708 uint16_t manufacturer; 2709 #ifdef ENABLE_CLASSIC 2710 hci_con_handle_t handle; 2711 hci_connection_t * conn; 2712 #endif 2713 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2714 uint8_t status; 2715 #endif 2716 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2717 le_audio_cig_t * cig; 2718 #endif 2719 2720 // get num cmd packets - limit to 1 to reduce complexity 2721 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2722 2723 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2724 switch (opcode){ 2725 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2726 if (packet[5]) break; 2727 // terminate, name 248 chars 2728 packet[6+248] = 0; 2729 log_info("local name: %s", &packet[6]); 2730 break; 2731 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2732 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2733 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2734 uint16_t acl_len = little_endian_read_16(packet, 6); 2735 uint16_t sco_len = packet[8]; 2736 2737 // determine usable ACL/SCO payload size 2738 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2739 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2740 2741 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2742 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2743 2744 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2745 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2746 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2747 } 2748 break; 2749 case HCI_OPCODE_HCI_READ_RSSI: 2750 if (packet[5] == ERROR_CODE_SUCCESS){ 2751 uint8_t event[5]; 2752 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2753 event[1] = 3; 2754 (void)memcpy(&event[2], &packet[6], 3); 2755 hci_emit_event(event, sizeof(event), 1); 2756 } 2757 break; 2758 #ifdef ENABLE_BLE 2759 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2760 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2761 hci_stack->le_iso_packets_total_num = packet[11]; 2762 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2763 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2764 2765 /* fall through */ 2766 2767 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2768 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2769 hci_stack->le_acl_packets_total_num = packet[8]; 2770 // determine usable ACL payload size 2771 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2772 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2773 } 2774 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); 2775 break; 2776 #endif 2777 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2778 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2779 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2780 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2781 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); 2782 break; 2783 #endif 2784 #ifdef ENABLE_LE_CENTRAL 2785 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2786 hci_stack->le_whitelist_capacity = packet[6]; 2787 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2788 break; 2789 #endif 2790 #ifdef ENABLE_LE_PERIPHERAL 2791 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2792 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2793 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2794 break; 2795 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2796 if (hci_stack->le_advertising_set_in_current_command != 0) { 2797 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2798 hci_stack->le_advertising_set_in_current_command = 0; 2799 if (advertising_set == NULL) break; 2800 uint8_t adv_status = packet[6]; 2801 uint8_t tx_power = packet[7]; 2802 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 }; 2803 if (adv_status == 0){ 2804 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2805 } 2806 hci_emit_event(event, sizeof(event), 1); 2807 } 2808 break; 2809 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2810 if (hci_stack->le_advertising_set_in_current_command != 0) { 2811 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2812 hci_stack->le_advertising_set_in_current_command = 0; 2813 if (advertising_set == NULL) break; 2814 uint8_t adv_status = packet[5]; 2815 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2816 if (adv_status == 0){ 2817 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2818 } 2819 hci_emit_event(event, sizeof(event), 1); 2820 } 2821 break; 2822 #endif 2823 #endif 2824 case HCI_OPCODE_HCI_READ_BD_ADDR: 2825 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2826 log_info("Local Address, Status: 0x%02x: Addr: %s", packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack->local_bd_addr)); 2827 #ifdef ENABLE_CLASSIC 2828 if (hci_stack->link_key_db){ 2829 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2830 } 2831 #endif 2832 break; 2833 #ifdef ENABLE_CLASSIC 2834 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2835 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2836 break; 2837 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2838 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2839 if (status == ERROR_CODE_SUCCESS) { 2840 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2841 } else { 2842 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2843 } 2844 break; 2845 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2846 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2847 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2848 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2849 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2850 hci_emit_event(event, sizeof(event), 1); 2851 } 2852 break; 2853 #endif 2854 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2855 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2856 2857 #ifdef ENABLE_CLASSIC 2858 // determine usable ACL packet types based on host buffer size and supported features 2859 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]); 2860 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2861 // determine usable SCO packet types based on supported features 2862 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2863 &hci_stack->local_supported_features[0]); 2864 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2865 #endif 2866 // Classic/LE 2867 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2868 break; 2869 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2870 manufacturer = little_endian_read_16(packet, 10); 2871 // map Cypress & Infineon to Broadcom 2872 switch (manufacturer){ 2873 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2874 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2875 log_info("Treat Cypress/Infineon as Broadcom"); 2876 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2877 little_endian_store_16(packet, 10, manufacturer); 2878 break; 2879 default: 2880 break; 2881 } 2882 hci_stack->manufacturer = manufacturer; 2883 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2884 break; 2885 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2886 hci_store_local_supported_commands(packet); 2887 break; 2888 #ifdef ENABLE_CLASSIC 2889 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2890 if (packet[5]) return; 2891 hci_stack->synchronous_flow_control_enabled = 1; 2892 break; 2893 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2894 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2895 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2896 conn = hci_connection_for_handle(handle); 2897 if (conn != NULL) { 2898 uint8_t key_size = 0; 2899 if (status == 0){ 2900 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2901 log_info("Handle %04x key Size: %u", handle, key_size); 2902 } else { 2903 key_size = 1; 2904 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2905 } 2906 hci_handle_read_encryption_key_size_complete(conn, key_size); 2907 } 2908 break; 2909 // assert pairing complete event is emitted. 2910 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2911 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2912 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2913 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2914 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2915 // lookup connection by gap pairing addr 2916 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2917 if (conn == NULL) break; 2918 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2919 break; 2920 2921 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2922 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2923 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2924 uint8_t event[67]; 2925 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2926 event[1] = 65; 2927 (void)memset(&event[2], 0, 65); 2928 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2929 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2930 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2931 event[2] = 3; 2932 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2933 } else { 2934 event[2] = 1; 2935 } 2936 } 2937 hci_emit_event(event, sizeof(event), 0); 2938 break; 2939 } 2940 2941 // note: only needed if user does not provide OOB data 2942 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2943 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2944 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2945 if (conn == NULL) break; 2946 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2947 break; 2948 #endif 2949 #endif 2950 #ifdef ENABLE_BLE 2951 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2952 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2953 // lookup CIG 2954 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2955 if (cig != NULL){ 2956 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2957 uint8_t i = 0; 2958 if (status == ERROR_CODE_SUCCESS){ 2959 // assign CIS handles to pre-allocated CIS 2960 btstack_linked_list_iterator_t it; 2961 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2962 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2963 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2964 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2965 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2966 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2967 iso_stream->cis_handle = cis_handle; 2968 cig->cis_con_handles[i] = cis_handle; 2969 i++; 2970 } 2971 } 2972 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2973 hci_emit_cig_created(cig, status); 2974 } else { 2975 hci_emit_cig_created(cig, status); 2976 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2977 } 2978 } 2979 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2980 break; 2981 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2982 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2983 if (status != ERROR_CODE_SUCCESS){ 2984 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2985 } 2986 break; 2987 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2988 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2989 if (status != ERROR_CODE_SUCCESS){ 2990 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2991 } 2992 break; 2993 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2994 // lookup BIG by state 2995 btstack_linked_list_iterator_t it; 2996 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2997 while (btstack_linked_list_iterator_has_next(&it)) { 2998 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2999 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3000 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3001 if (status == ERROR_CODE_SUCCESS){ 3002 big->state_vars.next_bis++; 3003 if (big->state_vars.next_bis == big->num_bis){ 3004 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3005 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3006 } else { 3007 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3008 } 3009 } else { 3010 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3011 big->state_vars.status = status; 3012 } 3013 return; 3014 } 3015 } 3016 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3017 while (btstack_linked_list_iterator_has_next(&it)) { 3018 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3019 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3020 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3021 if (status == ERROR_CODE_SUCCESS){ 3022 big_sync->state_vars.next_bis++; 3023 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3024 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3025 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3026 } else { 3027 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3028 } 3029 } else { 3030 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3031 big_sync->state_vars.status = status; 3032 } 3033 return; 3034 } 3035 } 3036 // Lookup CIS via active group operation 3037 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3038 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3039 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3040 3041 // lookup CIS by state 3042 btstack_linked_list_iterator_t it; 3043 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3044 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3045 while (btstack_linked_list_iterator_has_next(&it)){ 3046 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3047 handle = iso_stream->cis_handle; 3048 bool emit_cis_created = false; 3049 switch (iso_stream->state){ 3050 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3051 if (status != ERROR_CODE_SUCCESS){ 3052 emit_cis_created = true; 3053 break; 3054 } 3055 if (iso_stream->max_sdu_c_to_p > 0){ 3056 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3057 } else { 3058 emit_cis_created = true; 3059 } 3060 break; 3061 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3062 emit_cis_created = true; 3063 break; 3064 default: 3065 break; 3066 } 3067 if (emit_cis_created){ 3068 hci_cis_handle_created(iso_stream, status); 3069 } 3070 } 3071 } else { 3072 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3073 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3074 if (cig != NULL) { 3075 // emit cis created if all ISO Paths have been created 3076 // assume we are central 3077 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3078 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3079 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3080 // if outgoing has been setup, or incoming was setup but outgoing not required 3081 if ((cis_direction == 1) || (outgoing_needed == false)){ 3082 // lookup iso stream by cig/cis 3083 while (btstack_linked_list_iterator_has_next(&it)) { 3084 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3085 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3086 hci_cis_handle_created(iso_stream, status); 3087 } 3088 } 3089 } 3090 // next state 3091 cig->state_vars.next_cis++; 3092 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3093 } 3094 } 3095 } 3096 break; 3097 } 3098 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3099 // lookup BIG by state 3100 btstack_linked_list_iterator_t it; 3101 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3102 while (btstack_linked_list_iterator_has_next(&it)) { 3103 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3104 uint8_t big_handle = big_sync->big_handle; 3105 switch (big_sync->state){ 3106 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3107 btstack_linked_list_iterator_remove(&it); 3108 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3109 return; 3110 default: 3111 btstack_linked_list_iterator_remove(&it); 3112 hci_emit_big_sync_stopped(big_handle); 3113 return; 3114 } 3115 } 3116 break; 3117 } 3118 #endif 3119 #endif 3120 default: 3121 break; 3122 } 3123 } 3124 3125 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3126 UNUSED(size); 3127 3128 // get num cmd packets - limit to 1 to reduce complexity 3129 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3130 3131 // get opcode and command status 3132 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3133 3134 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3135 uint8_t status = hci_event_command_status_get_status(packet); 3136 #endif 3137 3138 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3139 bd_addr_type_t addr_type; 3140 bd_addr_t addr; 3141 #endif 3142 3143 switch (opcode){ 3144 #ifdef ENABLE_CLASSIC 3145 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3146 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3147 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3148 #endif 3149 #ifdef ENABLE_LE_CENTRAL 3150 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3151 #endif 3152 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3153 addr_type = hci_stack->outgoing_addr_type; 3154 memcpy(addr, hci_stack->outgoing_addr, 6); 3155 3156 // reset outgoing address info 3157 memset(hci_stack->outgoing_addr, 0, 6); 3158 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3159 3160 // on error 3161 if (status != ERROR_CODE_SUCCESS){ 3162 #ifdef ENABLE_LE_CENTRAL 3163 if (hci_is_le_connection_type(addr_type)){ 3164 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3165 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3166 } 3167 #endif 3168 // error => outgoing connection failed 3169 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3170 if (conn != NULL){ 3171 hci_handle_connection_failed(conn, status); 3172 } 3173 } 3174 break; 3175 #endif 3176 #ifdef ENABLE_CLASSIC 3177 case HCI_OPCODE_HCI_INQUIRY: 3178 if (status == ERROR_CODE_SUCCESS) { 3179 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3180 } else { 3181 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3182 } 3183 break; 3184 #endif 3185 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3186 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3187 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3188 if (status == ERROR_CODE_SUCCESS){ 3189 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3190 } else { 3191 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3192 } 3193 break; 3194 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3195 default: 3196 break; 3197 } 3198 } 3199 3200 #ifdef ENABLE_BLE 3201 static void event_handle_le_connection_complete(const uint8_t * packet){ 3202 bd_addr_t addr; 3203 bd_addr_type_t addr_type; 3204 hci_connection_t * conn; 3205 3206 // read fields 3207 uint8_t status = packet[3]; 3208 hci_role_t role = (hci_role_t) packet[6]; 3209 3210 // support different connection complete events 3211 uint16_t conn_interval; 3212 switch (packet[2]){ 3213 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3214 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3215 break; 3216 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3217 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3218 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3219 break; 3220 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3221 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3222 break; 3223 #endif 3224 default: 3225 btstack_unreachable(); 3226 return; 3227 } 3228 3229 // Connection management 3230 reverse_bd_addr(&packet[8], addr); 3231 addr_type = (bd_addr_type_t)packet[7]; 3232 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3233 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3234 3235 #ifdef ENABLE_LE_CENTRAL 3236 // handle error: error is reported only to the initiator -> outgoing connection 3237 if (status){ 3238 3239 // handle cancelled outgoing connection 3240 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3241 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3242 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3243 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3244 // reset state 3245 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3246 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3247 // get outgoing connection conn struct for direct connect 3248 conn = gap_get_outgoing_connection(); 3249 } 3250 3251 // outgoing le connection establishment is done 3252 if (conn){ 3253 // remove entry 3254 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3255 btstack_memory_hci_connection_free( conn ); 3256 } 3257 return; 3258 } 3259 #endif 3260 3261 // on success, both hosts receive connection complete event 3262 if (role == HCI_ROLE_MASTER){ 3263 #ifdef ENABLE_LE_CENTRAL 3264 // if we're master on an le connection, it was an outgoing connection and we're done with it 3265 // note: no hci_connection_t object exists yet for connect with whitelist 3266 if (hci_is_le_connection_type(addr_type)){ 3267 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3268 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3269 } 3270 #endif 3271 } else { 3272 #ifdef ENABLE_LE_PERIPHERAL 3273 // if we're slave, it was an incoming connection, advertisements have stopped 3274 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3275 #endif 3276 } 3277 3278 // LE connections are auto-accepted, so just create a connection if there isn't one already 3279 if (!conn){ 3280 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3281 } 3282 3283 // no memory, sorry. 3284 if (!conn){ 3285 return; 3286 } 3287 3288 conn->state = OPEN; 3289 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3290 conn->le_connection_interval = conn_interval; 3291 3292 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3293 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3294 3295 #ifdef ENABLE_LE_PERIPHERAL 3296 if (role == HCI_ROLE_SLAVE){ 3297 hci_update_advertisements_enabled_for_current_roles(); 3298 } 3299 #endif 3300 3301 // init unenhanced att bearer mtu 3302 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3303 conn->att_connection.mtu_exchanged = false; 3304 3305 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3306 3307 // restart timer 3308 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3309 // btstack_run_loop_add_timer(&conn->timeout); 3310 3311 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3312 3313 hci_emit_nr_connections_changed(); 3314 } 3315 #endif 3316 3317 #ifdef ENABLE_CLASSIC 3318 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){ 3319 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3320 // LEVEL_4 is tested by l2cap 3321 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3322 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3323 if (level >= LEVEL_3){ 3324 // MITM not possible without keyboard or display 3325 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3326 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3327 3328 // MITM possible if one side has keyboard and the other has keyboard or display 3329 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3330 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3331 3332 // MITM not possible if one side has only display and other side has no keyboard 3333 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3334 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3335 } 3336 // LEVEL 2 requires SSP, which is a given 3337 return true; 3338 } 3339 3340 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3341 // get requested security level 3342 gap_security_level_t requested_security_level = conn->requested_security_level; 3343 if (hci_stack->gap_secure_connections_only_mode){ 3344 requested_security_level = LEVEL_4; 3345 } 3346 3347 // assess security: LEVEL 4 requires SC 3348 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3349 if ((requested_security_level == LEVEL_4) && 3350 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3351 !hci_remote_sc_enabled(conn)){ 3352 log_info("Level 4 required, but SC not supported -> abort"); 3353 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3354 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3355 return; 3356 } 3357 3358 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3359 // - GAP/MOD/NBON/BV-02-C 3360 // - GAP/DM/NBON/BV-01-C 3361 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3362 switch (conn->io_cap_response_auth_req){ 3363 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3364 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3365 if (hci_stack->bondable == false){ 3366 log_info("Dedicated vs. non-bondable -> abort"); 3367 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3368 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3369 return; 3370 } 3371 default: 3372 break; 3373 } 3374 } 3375 3376 // assess security based on io capabilities 3377 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3378 // responder: fully validate io caps of both sides as well as OOB data 3379 bool security_possible = false; 3380 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3381 3382 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3383 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3384 // so we merge the OOB data availability 3385 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3386 if (conn->classic_oob_c_192 != NULL){ 3387 have_oob_data |= 1; 3388 } 3389 if (conn->classic_oob_c_256 != NULL){ 3390 have_oob_data |= 2; 3391 } 3392 // for up to Level 3, either P-192 as well as P-256 will do 3393 // 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 3394 // if remote does not SC, we should not receive P-256 data either 3395 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3396 security_possible = true; 3397 } 3398 // for Level 4, P-256 is needed 3399 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3400 security_possible = true; 3401 } 3402 #endif 3403 3404 if (security_possible == false){ 3405 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3406 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3407 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3408 return; 3409 } 3410 } else { 3411 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3412 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3413 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3414 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3415 log_info("Level 3+ required, but no input/output -> abort"); 3416 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3417 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3418 return; 3419 } 3420 #endif 3421 #endif 3422 } 3423 3424 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3425 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3426 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3427 } else { 3428 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3429 } 3430 #endif 3431 } 3432 3433 #endif 3434 3435 static void event_handler(uint8_t *packet, uint16_t size){ 3436 3437 uint16_t event_length = packet[1]; 3438 3439 // assert packet is complete 3440 if (size != (event_length + 2u)){ 3441 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3442 return; 3443 } 3444 3445 hci_con_handle_t handle; 3446 hci_connection_t * conn; 3447 int i; 3448 3449 #ifdef ENABLE_CLASSIC 3450 hci_link_type_t link_type; 3451 bd_addr_t addr; 3452 bd_addr_type_t addr_type; 3453 #endif 3454 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3455 hci_iso_stream_t * iso_stream; 3456 le_audio_big_t * big; 3457 le_audio_big_sync_t * big_sync; 3458 #endif 3459 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3460 btstack_linked_list_iterator_t it; 3461 #endif 3462 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3463 uint8_t advertising_handle; 3464 #endif 3465 3466 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3467 3468 switch (hci_event_packet_get_type(packet)) { 3469 3470 case HCI_EVENT_COMMAND_COMPLETE: 3471 handle_command_complete_event(packet, size); 3472 break; 3473 3474 case HCI_EVENT_COMMAND_STATUS: 3475 handle_command_status_event(packet, size); 3476 break; 3477 3478 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3479 if (size < 3) return; 3480 uint16_t num_handles = packet[2]; 3481 if (size != (3u + num_handles * 4u)) return; 3482 #ifdef ENABLE_CLASSIC 3483 bool notify_sco = false; 3484 #endif 3485 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3486 bool notify_iso = false; 3487 #endif 3488 uint16_t offset = 3; 3489 for (i=0; i<num_handles;i++){ 3490 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3491 offset += 2u; 3492 uint16_t num_packets = little_endian_read_16(packet, offset); 3493 offset += 2u; 3494 3495 conn = hci_connection_for_handle(handle); 3496 if (conn != NULL) { 3497 3498 if (conn->num_packets_sent >= num_packets) { 3499 conn->num_packets_sent -= num_packets; 3500 } else { 3501 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3502 conn->num_packets_sent = 0; 3503 } 3504 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3505 #ifdef ENABLE_CLASSIC 3506 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3507 notify_sco = true; 3508 } 3509 #endif 3510 } 3511 3512 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3513 hci_controller_dump_packets(); 3514 #endif 3515 3516 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3517 if (conn == NULL){ 3518 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3519 if (iso_stream != NULL){ 3520 if (iso_stream->num_packets_sent >= num_packets) { 3521 iso_stream->num_packets_sent -= num_packets; 3522 } else { 3523 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3524 iso_stream->num_packets_sent = 0; 3525 } 3526 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3527 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3528 if (big != NULL){ 3529 big->num_completed_timestamp_current_valid = true; 3530 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3531 } 3532 } 3533 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3534 num_packets, handle, iso_stream->num_packets_sent); 3535 notify_iso = true; 3536 } 3537 } 3538 #endif 3539 } 3540 3541 #ifdef ENABLE_CLASSIC 3542 if (notify_sco){ 3543 hci_notify_if_sco_can_send_now(); 3544 } 3545 #endif 3546 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3547 if (notify_iso){ 3548 hci_iso_notify_can_send_now(); 3549 } 3550 #endif 3551 break; 3552 } 3553 3554 #ifdef ENABLE_CLASSIC 3555 case HCI_EVENT_FLUSH_OCCURRED: 3556 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3557 handle = hci_event_flush_occurred_get_handle(packet); 3558 conn = hci_connection_for_handle(handle); 3559 if (conn) { 3560 log_info("Flush occurred, disconnect 0x%04x", handle); 3561 conn->state = SEND_DISCONNECT; 3562 } 3563 break; 3564 3565 case HCI_EVENT_INQUIRY_COMPLETE: 3566 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3567 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3568 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3569 hci_emit_event(event, sizeof(event), 1); 3570 } 3571 break; 3572 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3573 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3574 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3575 } 3576 break; 3577 case HCI_EVENT_CONNECTION_REQUEST: 3578 reverse_bd_addr(&packet[2], addr); 3579 link_type = (hci_link_type_t) packet[11]; 3580 3581 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3582 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3583 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3584 bd_addr_copy(hci_stack->decline_addr, addr); 3585 break; 3586 } 3587 3588 if (hci_stack->gap_classic_accept_callback != NULL){ 3589 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3590 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3591 bd_addr_copy(hci_stack->decline_addr, addr); 3592 break; 3593 } 3594 } 3595 3596 // TODO: eval COD 8-10 3597 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3598 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3599 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3600 if (!conn) { 3601 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3602 } 3603 if (!conn) { 3604 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3605 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3606 bd_addr_copy(hci_stack->decline_addr, addr); 3607 hci_run(); 3608 // avoid event to higher layer 3609 return; 3610 } 3611 conn->state = RECEIVED_CONNECTION_REQUEST; 3612 // store info about eSCO 3613 if (link_type == HCI_LINK_TYPE_ESCO){ 3614 conn->remote_supported_features[0] |= 1; 3615 } 3616 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3617 if (addr_type == BD_ADDR_TYPE_SCO){ 3618 hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3619 btstack_assert(acl_conn != NULL); 3620 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3621 } 3622 hci_run(); 3623 break; 3624 3625 case HCI_EVENT_CONNECTION_COMPLETE: 3626 // Connection management 3627 reverse_bd_addr(&packet[5], addr); 3628 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3629 addr_type = BD_ADDR_TYPE_ACL; 3630 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3631 if (conn) { 3632 switch (conn->state){ 3633 // expected states 3634 case ACCEPTED_CONNECTION_REQUEST: 3635 case SENT_CREATE_CONNECTION: 3636 break; 3637 // unexpected state -> ignore 3638 default: 3639 // don't forward event to app 3640 return; 3641 } 3642 if (!packet[2]){ 3643 conn->state = OPEN; 3644 conn->con_handle = little_endian_read_16(packet, 3); 3645 3646 // trigger write supervision timeout if we're master 3647 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3648 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3649 } 3650 3651 // trigger write automatic flush timeout 3652 if (hci_stack->automatic_flush_timeout != 0){ 3653 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3654 } 3655 3656 // restart timer 3657 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3658 btstack_run_loop_add_timer(&conn->timeout); 3659 3660 // trigger remote features for dedicated bonding 3661 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3662 hci_trigger_remote_features_for_connection(conn); 3663 } 3664 3665 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3666 3667 hci_emit_nr_connections_changed(); 3668 } else { 3669 // connection failed 3670 hci_handle_connection_failed(conn, packet[2]); 3671 } 3672 } 3673 break; 3674 3675 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3676 reverse_bd_addr(&packet[5], addr); 3677 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3678 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3679 btstack_assert(conn != NULL); 3680 3681 if (packet[2] != ERROR_CODE_SUCCESS){ 3682 // connection failed, remove entry 3683 hci_handle_connection_failed(conn, packet[2]); 3684 break; 3685 } 3686 3687 conn->state = OPEN; 3688 conn->con_handle = little_endian_read_16(packet, 3); 3689 3690 // update sco payload length for eSCO connections 3691 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3692 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3693 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3694 } 3695 3696 #ifdef ENABLE_SCO_OVER_HCI 3697 // update SCO 3698 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3699 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3700 } 3701 // trigger can send now 3702 if (hci_have_usb_transport()){ 3703 hci_stack->sco_can_send_now = true; 3704 } 3705 #endif 3706 #ifdef HAVE_SCO_TRANSPORT 3707 // configure sco transport 3708 if (hci_stack->sco_transport != NULL){ 3709 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3710 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3711 } 3712 #endif 3713 break; 3714 3715 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3716 handle = little_endian_read_16(packet, 3); 3717 conn = hci_connection_for_handle(handle); 3718 if (!conn) break; 3719 if (!packet[2]){ 3720 const uint8_t * features = &packet[5]; 3721 hci_handle_remote_features_page_0(conn, features); 3722 3723 // read extended features if possible 3724 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3725 && ((conn->remote_supported_features[0] & 2) != 0)) { 3726 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3727 break; 3728 } 3729 } 3730 hci_handle_remote_features_received(conn); 3731 break; 3732 3733 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3734 handle = little_endian_read_16(packet, 3); 3735 conn = hci_connection_for_handle(handle); 3736 if (!conn) break; 3737 // status = ok, page = 1 3738 if (!packet[2]) { 3739 uint8_t page_number = packet[5]; 3740 uint8_t maximum_page_number = packet[6]; 3741 const uint8_t * features = &packet[7]; 3742 bool done = false; 3743 switch (page_number){ 3744 case 1: 3745 hci_handle_remote_features_page_1(conn, features); 3746 if (maximum_page_number >= 2){ 3747 // get Secure Connections (Controller) from Page 2 if available 3748 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3749 } else { 3750 // otherwise, assume SC (Controller) == SC (Host) 3751 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3752 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3753 } 3754 done = true; 3755 } 3756 break; 3757 case 2: 3758 hci_handle_remote_features_page_2(conn, features); 3759 done = true; 3760 break; 3761 default: 3762 break; 3763 } 3764 if (!done) break; 3765 } 3766 hci_handle_remote_features_received(conn); 3767 break; 3768 3769 case HCI_EVENT_LINK_KEY_REQUEST: 3770 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3771 hci_event_link_key_request_get_bd_addr(packet, addr); 3772 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3773 if (!conn) break; 3774 3775 // lookup link key in db if not cached 3776 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3777 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3778 } 3779 3780 // response sent by hci_run() 3781 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3782 #endif 3783 break; 3784 3785 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3786 hci_event_link_key_request_get_bd_addr(packet, addr); 3787 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3788 if (!conn) break; 3789 3790 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3791 3792 // CVE-2020-26555: ignore NULL link key 3793 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3794 if (btstack_is_null(&packet[8], 16)) break; 3795 3796 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3797 // Change Connection Encryption keeps link key type 3798 if (link_key_type != CHANGED_COMBINATION_KEY){ 3799 conn->link_key_type = link_key_type; 3800 } 3801 3802 // cache link key. link keys stored in little-endian format for legacy reasons 3803 memcpy(&conn->link_key, &packet[8], 16); 3804 3805 // only store link key: 3806 // - if bondable enabled 3807 if (hci_stack->bondable == false) break; 3808 // - if security level sufficient 3809 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3810 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3811 break; 3812 } 3813 3814 case HCI_EVENT_PIN_CODE_REQUEST: 3815 hci_event_pin_code_request_get_bd_addr(packet, addr); 3816 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3817 if (!conn) break; 3818 3819 hci_pairing_started(conn, false); 3820 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3821 if (!hci_stack->bondable ){ 3822 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3823 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3824 hci_run(); 3825 return; 3826 } 3827 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3828 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3829 log_info("Level 4 required, but SC not supported -> abort"); 3830 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3831 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3832 hci_run(); 3833 return; 3834 } 3835 break; 3836 3837 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3838 hci_event_io_capability_response_get_bd_addr(packet, addr); 3839 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3840 if (!conn) break; 3841 3842 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3843 hci_pairing_started(conn, true); 3844 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3845 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3846 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3847 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3848 #endif 3849 break; 3850 3851 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3852 hci_event_io_capability_response_get_bd_addr(packet, addr); 3853 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3854 if (!conn) break; 3855 3856 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3857 hci_connection_timestamp(conn); 3858 hci_pairing_started(conn, true); 3859 break; 3860 3861 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3862 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3863 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3864 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3865 if (!conn) break; 3866 3867 hci_connection_timestamp(conn); 3868 3869 hci_pairing_started(conn, true); 3870 3871 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3872 break; 3873 #endif 3874 3875 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3876 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3877 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3878 if (!conn) break; 3879 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3880 if (hci_stack->ssp_auto_accept){ 3881 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3882 }; 3883 } else { 3884 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3885 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3886 // don't forward event to app 3887 hci_run(); 3888 return; 3889 } 3890 break; 3891 3892 case HCI_EVENT_USER_PASSKEY_REQUEST: 3893 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3894 if (hci_stack->ssp_auto_accept){ 3895 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3896 }; 3897 break; 3898 3899 case HCI_EVENT_MODE_CHANGE: 3900 handle = hci_event_mode_change_get_handle(packet); 3901 conn = hci_connection_for_handle(handle); 3902 if (!conn) break; 3903 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3904 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3905 break; 3906 #endif 3907 3908 case HCI_EVENT_ENCRYPTION_CHANGE: 3909 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3910 handle = hci_event_encryption_change_get_connection_handle(packet); 3911 conn = hci_connection_for_handle(handle); 3912 if (!conn) break; 3913 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3914 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3915 if (encryption_enabled){ 3916 if (hci_is_le_connection(conn)){ 3917 // For LE, we accept connection as encrypted 3918 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3919 } 3920 #ifdef ENABLE_CLASSIC 3921 else { 3922 3923 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3924 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3925 bool connected_uses_aes_ccm = encryption_enabled == 2; 3926 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3927 #ifdef ENABLE_TESTING_SUPPORT 3928 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 3929 // - GAP/SEC/SEM/BI-31-C 3930 // - GAP/SEC/SEM/BI-32-C 3931 // - GAP/SEC/SEM/BI-33-C 3932 3933 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 3934 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 3935 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3936 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 3937 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3938 } 3939 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 3940 conn->link_key_type, new_link_key_type); 3941 conn->link_key_type = new_link_key_type; 3942 #else 3943 log_info("SC during pairing, but only E0 now -> abort"); 3944 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3945 break; 3946 #endif 3947 } 3948 3949 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3950 if (connected_uses_aes_ccm){ 3951 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3952 } 3953 3954 #ifdef ENABLE_TESTING_SUPPORT 3955 // work around for issue with PTS dongle 3956 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3957 #endif 3958 // validate encryption key size 3959 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3960 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3961 // already got encryption key size 3962 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3963 } else { 3964 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3965 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3966 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3967 } else { 3968 // if not, pretend everything is perfect 3969 hci_handle_read_encryption_key_size_complete(conn, 16); 3970 } 3971 } 3972 } 3973 #endif 3974 } else { 3975 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3976 } 3977 } else { 3978 #ifdef ENABLE_CLASSIC 3979 if (!hci_is_le_connection(conn)){ 3980 uint8_t status = hci_event_encryption_change_get_status(packet); 3981 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3982 conn->bonding_flags &= ~BONDING_DEDICATED; 3983 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3984 conn->bonding_status = status; 3985 } 3986 // trigger security update -> level 0 3987 hci_handle_mutual_authentication_completed(conn); 3988 } 3989 #endif 3990 } 3991 3992 break; 3993 3994 #ifdef ENABLE_CLASSIC 3995 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3996 handle = hci_event_authentication_complete_get_connection_handle(packet); 3997 conn = hci_connection_for_handle(handle); 3998 if (!conn) break; 3999 4000 // clear authentication active flag 4001 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4002 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4003 4004 // authenticated only if auth status == 0 4005 if (hci_event_authentication_complete_get_status(packet) == 0){ 4006 // authenticated 4007 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4008 4009 // If not already encrypted, start encryption 4010 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4011 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4012 break; 4013 } 4014 } 4015 4016 // emit updated security level (will be 0 if not authenticated) 4017 hci_handle_mutual_authentication_completed(conn); 4018 break; 4019 4020 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4021 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4022 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4023 if (!conn) break; 4024 4025 // treat successfully paired connection as authenticated 4026 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4027 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4028 } 4029 4030 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4031 break; 4032 #endif 4033 4034 // HCI_EVENT_DISCONNECTION_COMPLETE 4035 // has been split, to first notify stack before shutting connection down 4036 // see end of function, too. 4037 case HCI_EVENT_DISCONNECTION_COMPLETE: 4038 if (packet[2]) break; // status != 0 4039 handle = little_endian_read_16(packet, 3); 4040 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4041 if (hci_stack->acl_fragmentation_total_size > 0u) { 4042 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4043 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4044 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4045 hci_stack->acl_fragmentation_total_size = 0; 4046 hci_stack->acl_fragmentation_pos = 0; 4047 if (release_buffer){ 4048 hci_release_packet_buffer(); 4049 } 4050 } 4051 } 4052 4053 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4054 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4055 if (hci_stack->iso_fragmentation_total_size > 0u) { 4056 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4057 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4058 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4059 hci_stack->iso_fragmentation_total_size = 0; 4060 hci_stack->iso_fragmentation_pos = 0; 4061 if (release_buffer){ 4062 hci_release_packet_buffer(); 4063 } 4064 } 4065 } 4066 4067 // finalize iso stream for CIS handle 4068 iso_stream = hci_iso_stream_for_con_handle(handle); 4069 if (iso_stream != NULL){ 4070 hci_iso_stream_finalize(iso_stream); 4071 break; 4072 } 4073 4074 // finalize iso stream(s) for ACL handle 4075 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4076 while (btstack_linked_list_iterator_has_next(&it)){ 4077 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4078 if (iso_stream->acl_handle == handle ) { 4079 hci_iso_stream_finalize(iso_stream); 4080 } 4081 } 4082 #endif 4083 4084 conn = hci_connection_for_handle(handle); 4085 if (!conn) break; 4086 #ifdef ENABLE_CLASSIC 4087 // pairing failed if it was ongoing 4088 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4089 #endif 4090 4091 // emit dedicatd bonding event 4092 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4093 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4094 } 4095 4096 // mark connection for shutdown, stop timers, reset state 4097 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4098 hci_connection_stop_timer(conn); 4099 hci_connection_init(conn); 4100 4101 #ifdef ENABLE_BLE 4102 #ifdef ENABLE_LE_PERIPHERAL 4103 // re-enable advertisements for le connections if active 4104 if (hci_is_le_connection(conn)){ 4105 hci_update_advertisements_enabled_for_current_roles(); 4106 } 4107 #endif 4108 #endif 4109 break; 4110 4111 case HCI_EVENT_HARDWARE_ERROR: 4112 log_error("Hardware Error: 0x%02x", packet[2]); 4113 if (hci_stack->hardware_error_callback){ 4114 (*hci_stack->hardware_error_callback)(packet[2]); 4115 } else { 4116 // if no special requests, just reboot stack 4117 hci_power_control_off(); 4118 hci_power_control_on(); 4119 } 4120 break; 4121 4122 #ifdef ENABLE_CLASSIC 4123 case HCI_EVENT_ROLE_CHANGE: 4124 if (packet[2]) break; // status != 0 4125 reverse_bd_addr(&packet[3], addr); 4126 addr_type = BD_ADDR_TYPE_ACL; 4127 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4128 if (!conn) break; 4129 conn->role = (hci_role_t) packet[9]; 4130 break; 4131 #endif 4132 4133 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4134 // release packet buffer only for asynchronous transport and if there are not further fragments 4135 if (hci_transport_synchronous()) { 4136 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4137 return; // instead of break: to avoid re-entering hci_run() 4138 } 4139 hci_stack->acl_fragmentation_tx_active = 0; 4140 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4141 hci_stack->iso_fragmentation_tx_active = 0; 4142 if (hci_stack->iso_fragmentation_total_size) break; 4143 #endif 4144 if (hci_stack->acl_fragmentation_total_size) break; 4145 hci_release_packet_buffer(); 4146 4147 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4148 hci_iso_notify_can_send_now(); 4149 #endif 4150 // L2CAP receives this event via the hci_emit_event below 4151 4152 #ifdef ENABLE_CLASSIC 4153 // For SCO, we do the can_send_now_check here 4154 hci_notify_if_sco_can_send_now(); 4155 #endif 4156 break; 4157 4158 #ifdef ENABLE_CLASSIC 4159 case HCI_EVENT_SCO_CAN_SEND_NOW: 4160 // For SCO, we do the can_send_now_check here 4161 hci_stack->sco_can_send_now = true; 4162 hci_notify_if_sco_can_send_now(); 4163 return; 4164 4165 // explode inquriy results for easier consumption 4166 case HCI_EVENT_INQUIRY_RESULT: 4167 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4168 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4169 gap_inquiry_explode(packet, size); 4170 break; 4171 #endif 4172 4173 #ifdef ENABLE_BLE 4174 case HCI_EVENT_LE_META: 4175 switch (packet[2]){ 4176 #ifdef ENABLE_LE_CENTRAL 4177 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4178 if (!hci_stack->le_scanning_enabled) break; 4179 le_handle_advertisement_report(packet, size); 4180 break; 4181 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4182 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4183 if (!hci_stack->le_scanning_enabled) break; 4184 le_handle_extended_advertisement_report(packet, size); 4185 break; 4186 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4187 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4188 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4189 break; 4190 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4191 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4192 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4193 while (btstack_linked_list_iterator_has_next(&it)) { 4194 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4195 if (advertising_set->advertising_handle == advertising_handle){ 4196 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4197 } 4198 } 4199 break; 4200 #endif 4201 #endif 4202 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4203 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4204 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4205 event_handle_le_connection_complete(packet); 4206 break; 4207 4208 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4209 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4210 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4211 conn = hci_connection_for_handle(handle); 4212 if (!conn) break; 4213 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4214 break; 4215 4216 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4217 // connection 4218 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4219 conn = hci_connection_for_handle(handle); 4220 if (conn) { 4221 // read arguments 4222 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4223 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4224 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4225 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4226 4227 // validate against current connection parameter range 4228 le_connection_parameter_range_t existing_range; 4229 gap_get_connection_parameter_range(&existing_range); 4230 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4231 if (update_parameter){ 4232 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4233 conn->le_conn_interval_min = le_conn_interval_min; 4234 conn->le_conn_interval_max = le_conn_interval_max; 4235 conn->le_conn_latency = le_conn_latency; 4236 conn->le_supervision_timeout = le_supervision_timeout; 4237 } else { 4238 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4239 } 4240 } 4241 break; 4242 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4243 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4244 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4245 conn = hci_connection_for_handle(handle); 4246 if (conn) { 4247 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4248 } 4249 break; 4250 #endif 4251 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4252 case HCI_SUBEVENT_LE_CIS_REQUEST: 4253 // incoming CIS request, allocate iso stream object and cache metadata 4254 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4255 hci_subevent_le_cis_request_get_cig_id(packet), 4256 hci_subevent_le_cis_request_get_cis_id(packet)); 4257 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4258 if (iso_stream != NULL){ 4259 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4260 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4261 } 4262 break; 4263 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4264 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4265 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4266 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4267 iso_stream = hci_iso_stream_for_con_handle(handle); 4268 btstack_assert(iso_stream != NULL); 4269 // track SDU 4270 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4271 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4272 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4273 // CIS Accept by Peripheral 4274 if (status == ERROR_CODE_SUCCESS){ 4275 if (iso_stream->max_sdu_p_to_c > 0){ 4276 // we're peripheral and we will send data 4277 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4278 } else { 4279 // we're peripheral and we will only receive data 4280 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4281 } 4282 } else { 4283 hci_cis_handle_created(iso_stream, status); 4284 } 4285 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4286 } else { 4287 // CIG Setup by Central 4288 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4289 btstack_assert(cig != NULL); 4290 // update iso stream state 4291 if (status == ERROR_CODE_SUCCESS){ 4292 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4293 } else { 4294 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4295 } 4296 // update cig state 4297 uint8_t i; 4298 for (i=0;i<cig->num_cis;i++){ 4299 if (cig->cis_con_handles[i] == handle){ 4300 cig->cis_setup_active[i] = false; 4301 if (status == ERROR_CODE_SUCCESS){ 4302 cig->cis_established[i] = true; 4303 } else { 4304 hci_cis_handle_created(iso_stream, status); 4305 } 4306 } 4307 } 4308 4309 // trigger iso path setup if complete 4310 bool cis_setup_active = false; 4311 for (i=0;i<cig->num_cis;i++){ 4312 cis_setup_active |= cig->cis_setup_active[i]; 4313 } 4314 if (cis_setup_active == false){ 4315 cig->state_vars.next_cis = 0; 4316 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4317 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4318 } 4319 } 4320 } 4321 break; 4322 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4323 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4324 big = hci_big_for_handle(packet[4]); 4325 if (big != NULL){ 4326 uint8_t status = packet[3]; 4327 if (status == ERROR_CODE_SUCCESS){ 4328 // store bis_con_handles and trigger iso path setup 4329 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4330 uint8_t i; 4331 for (i=0;i<num_bis;i++){ 4332 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4333 big->bis_con_handles[i] = bis_handle; 4334 // assign bis handle 4335 btstack_linked_list_iterator_t it; 4336 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4337 while (btstack_linked_list_iterator_has_next(&it)){ 4338 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4339 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4340 (iso_stream->group_id == big->big_handle)){ 4341 iso_stream->cis_handle = bis_handle; 4342 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4343 break; 4344 } 4345 } 4346 } 4347 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4348 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4349 big->state_vars.next_bis = 0; 4350 } 4351 } else { 4352 // create BIG failed or has been stopped by us 4353 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4354 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4355 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4356 hci_emit_big_created(big, status); 4357 } else { 4358 hci_emit_big_terminated(big); 4359 } 4360 } 4361 } 4362 break; 4363 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4364 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4365 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4366 if (big != NULL){ 4367 // finalize associated ISO streams 4368 btstack_linked_list_iterator_t it; 4369 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4370 while (btstack_linked_list_iterator_has_next(&it)){ 4371 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4372 if (iso_stream->group_id == big->big_handle){ 4373 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4374 btstack_linked_list_iterator_remove(&it); 4375 btstack_memory_hci_iso_stream_free(iso_stream); 4376 } 4377 } 4378 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4379 switch (big->state){ 4380 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4381 hci_emit_big_created(big, big->state_vars.status); 4382 break; 4383 default: 4384 hci_emit_big_terminated(big); 4385 break; 4386 } 4387 } 4388 break; 4389 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4390 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4391 big_sync = hci_big_sync_for_handle(packet[4]); 4392 if (big_sync != NULL){ 4393 uint8_t status = packet[3]; 4394 uint8_t big_handle = packet[4]; 4395 if (status == ERROR_CODE_SUCCESS){ 4396 // store bis_con_handles and trigger iso path setup 4397 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4398 uint8_t i; 4399 for (i=0;i<num_bis;i++){ 4400 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4401 } 4402 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4403 // trigger iso path setup 4404 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4405 big_sync->state_vars.next_bis = 0; 4406 } 4407 } else { 4408 // create BIG Sync failed or has been stopped by us 4409 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4410 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4411 hci_emit_big_sync_created(big_sync, status); 4412 } else { 4413 hci_emit_big_sync_stopped(big_handle); 4414 } 4415 } 4416 } 4417 break; 4418 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4419 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4420 big_sync = hci_big_sync_for_handle(packet[4]); 4421 if (big_sync != NULL){ 4422 uint8_t big_handle = packet[4]; 4423 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4424 hci_emit_big_sync_stopped(big_handle); 4425 } 4426 break; 4427 #endif 4428 default: 4429 break; 4430 } 4431 break; 4432 #endif 4433 case HCI_EVENT_VENDOR_SPECIFIC: 4434 // Vendor specific commands often create vendor specific event instead of num completed packets 4435 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4436 switch (hci_stack->manufacturer){ 4437 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4438 hci_stack->num_cmd_packets = 1; 4439 break; 4440 default: 4441 break; 4442 } 4443 break; 4444 default: 4445 break; 4446 } 4447 4448 handle_event_for_current_stack_state(packet, size); 4449 4450 // notify upper stack 4451 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4452 4453 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4454 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4455 handle = little_endian_read_16(packet, 3); 4456 hci_connection_t * aConn = hci_connection_for_handle(handle); 4457 // discard connection if app did not trigger a reconnect in the event handler 4458 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4459 hci_shutdown_connection(aConn); 4460 } 4461 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4462 hci_controller_dump_packets(); 4463 #endif 4464 } 4465 4466 // execute main loop 4467 hci_run(); 4468 } 4469 4470 #ifdef ENABLE_CLASSIC 4471 4472 #ifdef ENABLE_SCO_OVER_HCI 4473 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4474 static void sco_schedule_tx(hci_connection_t * conn); 4475 4476 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4477 log_debug("SCO TX Timeout"); 4478 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4479 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4480 if (!conn) return; 4481 4482 // trigger send 4483 conn->sco_tx_ready = 1; 4484 // extra packet if CVSD but SCO buffer is too short 4485 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4486 conn->sco_tx_ready++; 4487 } 4488 hci_notify_if_sco_can_send_now(); 4489 } 4490 4491 4492 #define SCO_TX_AFTER_RX_MS (6) 4493 4494 static void sco_schedule_tx(hci_connection_t * conn){ 4495 4496 uint32_t now = btstack_run_loop_get_time_ms(); 4497 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4498 int time_delta_ms = sco_tx_ms - now; 4499 4500 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4501 4502 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4503 btstack_run_loop_remove_timer(timer); 4504 btstack_run_loop_set_timer(timer, time_delta_ms); 4505 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4506 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4507 btstack_run_loop_add_timer(timer); 4508 } 4509 #endif 4510 4511 static void sco_handler(uint8_t * packet, uint16_t size){ 4512 // lookup connection struct 4513 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4514 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4515 if (!conn) return; 4516 4517 #ifdef ENABLE_SCO_OVER_HCI 4518 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4519 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4520 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4521 packet[2] = 0x3c; 4522 memmove(&packet[3], &packet[23], 63); 4523 size = 63; 4524 } 4525 } 4526 4527 if (hci_have_usb_transport()){ 4528 // Nothing to do 4529 } else { 4530 // 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); 4531 if (hci_stack->synchronous_flow_control_enabled == 0){ 4532 uint32_t now = btstack_run_loop_get_time_ms(); 4533 4534 if (!conn->sco_rx_valid){ 4535 // ignore first 10 packets 4536 conn->sco_rx_count++; 4537 // log_debug("sco rx count %u", conn->sco_rx_count); 4538 if (conn->sco_rx_count == 10) { 4539 // use first timestamp as is and pretent it just started 4540 conn->sco_rx_ms = now; 4541 conn->sco_rx_valid = 1; 4542 conn->sco_rx_count = 0; 4543 sco_schedule_tx(conn); 4544 } 4545 } else { 4546 // track expected arrival timme 4547 conn->sco_rx_count++; 4548 conn->sco_rx_ms += 7; 4549 int delta = (int32_t) (now - conn->sco_rx_ms); 4550 if (delta > 0){ 4551 conn->sco_rx_ms++; 4552 } 4553 // log_debug("sco rx %u", conn->sco_rx_ms); 4554 sco_schedule_tx(conn); 4555 } 4556 } 4557 } 4558 #endif 4559 4560 // deliver to app 4561 if (hci_stack->sco_packet_handler) { 4562 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4563 } 4564 4565 #ifdef HAVE_SCO_TRANSPORT 4566 // We can send one packet for each received packet 4567 conn->sco_tx_ready++; 4568 hci_notify_if_sco_can_send_now(); 4569 #endif 4570 4571 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4572 conn->num_packets_completed++; 4573 hci_stack->host_completed_packets = 1; 4574 hci_run(); 4575 #endif 4576 } 4577 #endif 4578 4579 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4580 hci_dump_packet(packet_type, 1, packet, size); 4581 switch (packet_type) { 4582 case HCI_EVENT_PACKET: 4583 event_handler(packet, size); 4584 break; 4585 case HCI_ACL_DATA_PACKET: 4586 acl_handler(packet, size); 4587 break; 4588 #ifdef ENABLE_CLASSIC 4589 case HCI_SCO_DATA_PACKET: 4590 sco_handler(packet, size); 4591 break; 4592 #endif 4593 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4594 case HCI_ISO_DATA_PACKET: 4595 hci_iso_packet_handler(packet, size); 4596 break; 4597 #endif 4598 default: 4599 break; 4600 } 4601 } 4602 4603 /** 4604 * @brief Add event packet handler. 4605 */ 4606 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4607 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4608 } 4609 4610 /** 4611 * @brief Remove event packet handler. 4612 */ 4613 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4614 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4615 } 4616 4617 /** Register HCI packet handlers */ 4618 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4619 hci_stack->acl_packet_handler = handler; 4620 } 4621 4622 #ifdef ENABLE_CLASSIC 4623 /** 4624 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4625 */ 4626 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4627 hci_stack->sco_packet_handler = handler; 4628 } 4629 #endif 4630 4631 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4632 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4633 hci_stack->iso_packet_handler = handler; 4634 } 4635 #endif 4636 4637 static void hci_state_reset(void){ 4638 // no connections yet 4639 hci_stack->connections = NULL; 4640 4641 // keep discoverable/connectable as this has been requested by the client(s) 4642 // hci_stack->discoverable = 0; 4643 // hci_stack->connectable = 0; 4644 // hci_stack->bondable = 1; 4645 // hci_stack->own_addr_type = 0; 4646 4647 // buffer is free 4648 hci_stack->hci_packet_buffer_reserved = false; 4649 4650 // no pending cmds 4651 hci_stack->decline_reason = 0; 4652 4653 hci_stack->secure_connections_active = false; 4654 4655 #ifdef ENABLE_CLASSIC 4656 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4657 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4658 4659 hci_stack->gap_tasks_classic = 4660 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4661 GAP_TASK_SET_CLASS_OF_DEVICE | 4662 GAP_TASK_SET_LOCAL_NAME | 4663 GAP_TASK_SET_EIR_DATA | 4664 GAP_TASK_WRITE_SCAN_ENABLE | 4665 GAP_TASK_WRITE_PAGE_TIMEOUT; 4666 #endif 4667 4668 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4669 hci_stack->classic_read_local_oob_data = false; 4670 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4671 #endif 4672 4673 // LE 4674 #ifdef ENABLE_BLE 4675 memset(hci_stack->le_random_address, 0, 6); 4676 hci_stack->le_random_address_set = 0; 4677 #endif 4678 #ifdef ENABLE_LE_CENTRAL 4679 hci_stack->le_scanning_active = false; 4680 hci_stack->le_scanning_param_update = true; 4681 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4682 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4683 hci_stack->le_whitelist_capacity = 0; 4684 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4685 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4686 #endif 4687 #endif 4688 #ifdef ENABLE_LE_PERIPHERAL 4689 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4690 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4691 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4692 } 4693 if (hci_stack->le_advertisements_data != NULL){ 4694 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4695 } 4696 #endif 4697 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4698 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4699 #endif 4700 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4701 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4702 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4703 #endif 4704 } 4705 4706 #ifdef ENABLE_CLASSIC 4707 /** 4708 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4709 */ 4710 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4711 // store and open remote device db 4712 hci_stack->link_key_db = link_key_db; 4713 if (hci_stack->link_key_db) { 4714 hci_stack->link_key_db->open(); 4715 } 4716 } 4717 #endif 4718 4719 void hci_init(const hci_transport_t *transport, const void *config){ 4720 4721 #ifdef HAVE_MALLOC 4722 if (!hci_stack) { 4723 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4724 } 4725 #else 4726 hci_stack = &hci_stack_static; 4727 #endif 4728 memset(hci_stack, 0, sizeof(hci_stack_t)); 4729 4730 // reference to use transport layer implementation 4731 hci_stack->hci_transport = transport; 4732 4733 // reference to used config 4734 hci_stack->config = config; 4735 4736 // setup pointer for outgoing packet buffer 4737 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4738 4739 // max acl payload size defined in config.h 4740 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4741 4742 // register packet handlers with transport 4743 transport->register_packet_handler(&packet_handler); 4744 4745 hci_stack->state = HCI_STATE_OFF; 4746 4747 // class of device 4748 hci_stack->class_of_device = 0x007a020c; // Smartphone 4749 4750 // bondable by default 4751 hci_stack->bondable = 1; 4752 4753 #ifdef ENABLE_CLASSIC 4754 // classic name 4755 hci_stack->local_name = default_classic_name; 4756 4757 // Master slave policy 4758 hci_stack->master_slave_policy = 1; 4759 4760 // Allow Role Switch 4761 hci_stack->allow_role_switch = 1; 4762 4763 // Default / minimum security level = 2 4764 hci_stack->gap_security_level = LEVEL_2; 4765 4766 // Default Security Mode 4 4767 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4768 4769 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4770 hci_stack->gap_required_encyrption_key_size = 7; 4771 4772 // Link Supervision Timeout 4773 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4774 4775 #endif 4776 4777 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4778 hci_stack->ssp_enable = 1; 4779 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4780 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4781 hci_stack->ssp_auto_accept = 1; 4782 4783 // Secure Connections: enable (requires support from Controller) 4784 hci_stack->secure_connections_enable = true; 4785 4786 // voice setting - signed 16 bit pcm data with CVSD over the air 4787 hci_stack->sco_voice_setting = 0x60; 4788 4789 #ifdef ENABLE_BLE 4790 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4791 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4792 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4793 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4794 hci_stack->le_connection_latency = 4; // 4 4795 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4796 hci_stack->le_minimum_ce_length = 0; // 0 ms 4797 hci_stack->le_maximum_ce_length = 0; // 0 ms 4798 #endif 4799 4800 #ifdef ENABLE_LE_CENTRAL 4801 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4802 4803 // default LE Scanning 4804 hci_stack->le_scan_type = 0x01; // active 4805 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4806 hci_stack->le_scan_window = 0x30; // 30 ms 4807 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4808 #endif 4809 4810 #ifdef ENABLE_LE_PERIPHERAL 4811 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4812 4813 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4814 hci_stack->le_advertisements_interval_min = 0x0800; 4815 hci_stack->le_advertisements_interval_max = 0x0800; 4816 hci_stack->le_advertisements_type = 0; 4817 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4818 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4819 hci_stack->le_advertisements_channel_map = 0x07; 4820 hci_stack->le_advertisements_filter_policy = 0; 4821 #endif 4822 4823 // connection parameter range used to answer connection parameter update requests in l2cap 4824 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4825 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4826 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4827 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4828 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4829 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4830 4831 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4832 hci_stack->iso_packets_to_queue = 1; 4833 #endif 4834 4835 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4836 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4837 #endif 4838 4839 hci_state_reset(); 4840 } 4841 4842 void hci_deinit(void){ 4843 btstack_run_loop_remove_timer(&hci_stack->timeout); 4844 #ifdef HAVE_MALLOC 4845 if (hci_stack) { 4846 free(hci_stack); 4847 } 4848 #endif 4849 hci_stack = NULL; 4850 4851 #ifdef ENABLE_CLASSIC 4852 disable_l2cap_timeouts = 0; 4853 #endif 4854 } 4855 4856 /** 4857 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4858 */ 4859 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4860 hci_stack->chipset = chipset_driver; 4861 4862 // reset chipset driver - init is also called on power_up 4863 if (hci_stack->chipset && hci_stack->chipset->init){ 4864 hci_stack->chipset->init(hci_stack->config); 4865 } 4866 } 4867 4868 void hci_enable_custom_pre_init(void){ 4869 hci_stack->chipset_pre_init = true; 4870 } 4871 4872 /** 4873 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4874 */ 4875 void hci_set_control(const btstack_control_t *hardware_control){ 4876 // references to used control implementation 4877 hci_stack->control = hardware_control; 4878 // init with transport config 4879 hardware_control->init(hci_stack->config); 4880 } 4881 4882 static void hci_discard_connections(void){ 4883 btstack_linked_list_iterator_t it; 4884 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4885 while (btstack_linked_list_iterator_has_next(&it)){ 4886 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4887 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4888 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4889 hci_shutdown_connection(connection); 4890 } 4891 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4892 while (hci_stack->iso_streams != NULL){ 4893 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4894 } 4895 #endif 4896 } 4897 4898 void hci_close(void){ 4899 4900 #ifdef ENABLE_CLASSIC 4901 // close remote device db 4902 if (hci_stack->link_key_db) { 4903 hci_stack->link_key_db->close(); 4904 } 4905 #endif 4906 4907 hci_discard_connections(); 4908 4909 hci_power_control(HCI_POWER_OFF); 4910 4911 #ifdef HAVE_MALLOC 4912 free(hci_stack); 4913 #endif 4914 hci_stack = NULL; 4915 } 4916 4917 #ifdef HAVE_SCO_TRANSPORT 4918 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4919 hci_stack->sco_transport = sco_transport; 4920 sco_transport->register_packet_handler(&packet_handler); 4921 } 4922 #endif 4923 4924 #ifdef ENABLE_CLASSIC 4925 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4926 // validate ranage and set 4927 if (encryption_key_size < 7) return; 4928 if (encryption_key_size > 16) return; 4929 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4930 } 4931 4932 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4933 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4934 hci_stack->gap_security_mode = security_mode; 4935 return ERROR_CODE_SUCCESS; 4936 } else { 4937 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4938 } 4939 } 4940 4941 gap_security_mode_t gap_get_security_mode(void){ 4942 return hci_stack->gap_security_mode; 4943 } 4944 4945 void gap_set_security_level(gap_security_level_t security_level){ 4946 hci_stack->gap_security_level = security_level; 4947 } 4948 4949 gap_security_level_t gap_get_security_level(void){ 4950 if (hci_stack->gap_secure_connections_only_mode){ 4951 return LEVEL_4; 4952 } 4953 return hci_stack->gap_security_level; 4954 } 4955 4956 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4957 hci_stack->gap_minimal_service_security_level = security_level; 4958 } 4959 4960 void gap_set_secure_connections_only_mode(bool enable){ 4961 hci_stack->gap_secure_connections_only_mode = enable; 4962 } 4963 4964 bool gap_get_secure_connections_only_mode(void){ 4965 return hci_stack->gap_secure_connections_only_mode; 4966 } 4967 #endif 4968 4969 #ifdef ENABLE_CLASSIC 4970 void gap_set_class_of_device(uint32_t class_of_device){ 4971 hci_stack->class_of_device = class_of_device; 4972 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4973 hci_run(); 4974 } 4975 4976 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4977 hci_stack->default_link_policy_settings = default_link_policy_settings; 4978 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4979 hci_run(); 4980 } 4981 4982 void gap_set_allow_role_switch(bool allow_role_switch){ 4983 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4984 } 4985 4986 uint8_t hci_get_allow_role_switch(void){ 4987 return hci_stack->allow_role_switch; 4988 } 4989 4990 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4991 hci_stack->link_supervision_timeout = link_supervision_timeout; 4992 } 4993 4994 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4995 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4996 } 4997 4998 uint16_t hci_automatic_flush_timeout(void){ 4999 return hci_stack->automatic_flush_timeout; 5000 } 5001 5002 void hci_disable_l2cap_timeout_check(void){ 5003 disable_l2cap_timeouts = 1; 5004 } 5005 #endif 5006 5007 #ifndef HAVE_HOST_CONTROLLER_API 5008 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5009 void hci_set_bd_addr(bd_addr_t addr){ 5010 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5011 hci_stack->custom_bd_addr_set = 1; 5012 } 5013 #endif 5014 5015 // State-Module-Driver overview 5016 // state module low-level 5017 // HCI_STATE_OFF off close 5018 // HCI_STATE_INITIALIZING, on open 5019 // HCI_STATE_WORKING, on open 5020 // HCI_STATE_HALTING, on open 5021 // HCI_STATE_SLEEPING, off/sleep close 5022 // HCI_STATE_FALLING_ASLEEP on open 5023 5024 static int hci_power_control_on(void){ 5025 5026 // power on 5027 int err = 0; 5028 if (hci_stack->control && hci_stack->control->on){ 5029 err = (*hci_stack->control->on)(); 5030 } 5031 if (err){ 5032 log_error( "POWER_ON failed"); 5033 hci_emit_hci_open_failed(); 5034 return err; 5035 } 5036 5037 // int chipset driver 5038 if (hci_stack->chipset && hci_stack->chipset->init){ 5039 hci_stack->chipset->init(hci_stack->config); 5040 } 5041 5042 // init transport 5043 if (hci_stack->hci_transport->init){ 5044 hci_stack->hci_transport->init(hci_stack->config); 5045 } 5046 5047 // open transport 5048 err = hci_stack->hci_transport->open(); 5049 if (err){ 5050 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5051 if (hci_stack->control && hci_stack->control->off){ 5052 (*hci_stack->control->off)(); 5053 } 5054 hci_emit_hci_open_failed(); 5055 return err; 5056 } 5057 return 0; 5058 } 5059 5060 static void hci_power_control_off(void){ 5061 5062 log_info("hci_power_control_off"); 5063 5064 // close low-level device 5065 hci_stack->hci_transport->close(); 5066 5067 log_info("hci_power_control_off - hci_transport closed"); 5068 5069 // power off 5070 if (hci_stack->control && hci_stack->control->off){ 5071 (*hci_stack->control->off)(); 5072 } 5073 5074 log_info("hci_power_control_off - control closed"); 5075 5076 hci_stack->state = HCI_STATE_OFF; 5077 } 5078 5079 static void hci_power_control_sleep(void){ 5080 5081 log_info("hci_power_control_sleep"); 5082 5083 #if 0 5084 // don't close serial port during sleep 5085 5086 // close low-level device 5087 hci_stack->hci_transport->close(hci_stack->config); 5088 #endif 5089 5090 // sleep mode 5091 if (hci_stack->control && hci_stack->control->sleep){ 5092 (*hci_stack->control->sleep)(); 5093 } 5094 5095 hci_stack->state = HCI_STATE_SLEEPING; 5096 } 5097 5098 static int hci_power_control_wake(void){ 5099 5100 log_info("hci_power_control_wake"); 5101 5102 // wake on 5103 if (hci_stack->control && hci_stack->control->wake){ 5104 (*hci_stack->control->wake)(); 5105 } 5106 5107 #if 0 5108 // open low-level device 5109 int err = hci_stack->hci_transport->open(hci_stack->config); 5110 if (err){ 5111 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5112 if (hci_stack->control && hci_stack->control->off){ 5113 (*hci_stack->control->off)(); 5114 } 5115 hci_emit_hci_open_failed(); 5116 return err; 5117 } 5118 #endif 5119 5120 return 0; 5121 } 5122 5123 static void hci_power_enter_initializing_state(void){ 5124 // set up state machine 5125 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5126 hci_stack->hci_packet_buffer_reserved = false; 5127 hci_stack->state = HCI_STATE_INITIALIZING; 5128 5129 #ifndef HAVE_HOST_CONTROLLER_API 5130 if (hci_stack->chipset_pre_init) { 5131 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5132 } else 5133 #endif 5134 { 5135 hci_stack->substate = HCI_INIT_SEND_RESET; 5136 } 5137 } 5138 5139 static void hci_power_enter_halting_state(void){ 5140 #ifdef ENABLE_BLE 5141 // drop entries scheduled for removal, mark others for re-adding 5142 btstack_linked_list_iterator_t it; 5143 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5144 while (btstack_linked_list_iterator_has_next(&it)){ 5145 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5146 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5147 btstack_linked_list_iterator_remove(&it); 5148 btstack_memory_whitelist_entry_free(entry); 5149 } else { 5150 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5151 } 5152 } 5153 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5154 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5155 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5156 while (btstack_linked_list_iterator_has_next(&it)){ 5157 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5158 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5159 btstack_linked_list_iterator_remove(&it); 5160 btstack_memory_periodic_advertiser_list_entry_free(entry); 5161 } else { 5162 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5163 continue; 5164 } 5165 } 5166 #endif 5167 #endif 5168 // see hci_run 5169 hci_stack->state = HCI_STATE_HALTING; 5170 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5171 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5172 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5173 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5174 btstack_run_loop_add_timer(&hci_stack->timeout); 5175 } 5176 5177 // returns error 5178 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5179 int err; 5180 switch (power_mode){ 5181 case HCI_POWER_ON: 5182 err = hci_power_control_on(); 5183 if (err != 0) { 5184 log_error("hci_power_control_on() error %d", err); 5185 return err; 5186 } 5187 hci_power_enter_initializing_state(); 5188 break; 5189 case HCI_POWER_OFF: 5190 // do nothing 5191 break; 5192 case HCI_POWER_SLEEP: 5193 // do nothing (with SLEEP == OFF) 5194 break; 5195 default: 5196 btstack_assert(false); 5197 break; 5198 } 5199 return ERROR_CODE_SUCCESS; 5200 } 5201 5202 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5203 switch (power_mode){ 5204 case HCI_POWER_ON: 5205 // do nothing 5206 break; 5207 case HCI_POWER_OFF: 5208 // no connections yet, just turn it off 5209 hci_power_control_off(); 5210 break; 5211 case HCI_POWER_SLEEP: 5212 // no connections yet, just turn it off 5213 hci_power_control_sleep(); 5214 break; 5215 default: 5216 btstack_assert(false); 5217 break; 5218 } 5219 return ERROR_CODE_SUCCESS; 5220 } 5221 5222 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5223 switch (power_mode){ 5224 case HCI_POWER_ON: 5225 // do nothing 5226 break; 5227 case HCI_POWER_OFF: 5228 hci_power_enter_halting_state(); 5229 break; 5230 case HCI_POWER_SLEEP: 5231 // see hci_run 5232 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5233 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5234 break; 5235 default: 5236 btstack_assert(false); 5237 break; 5238 } 5239 return ERROR_CODE_SUCCESS; 5240 } 5241 5242 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5243 switch (power_mode){ 5244 case HCI_POWER_ON: 5245 hci_power_enter_initializing_state(); 5246 break; 5247 case HCI_POWER_OFF: 5248 // do nothing 5249 break; 5250 case HCI_POWER_SLEEP: 5251 // see hci_run 5252 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5253 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5254 break; 5255 default: 5256 btstack_assert(false); 5257 break; 5258 } 5259 return ERROR_CODE_SUCCESS; 5260 } 5261 5262 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5263 switch (power_mode){ 5264 case HCI_POWER_ON: 5265 hci_power_enter_initializing_state(); 5266 break; 5267 case HCI_POWER_OFF: 5268 hci_power_enter_halting_state(); 5269 break; 5270 case HCI_POWER_SLEEP: 5271 // do nothing 5272 break; 5273 default: 5274 btstack_assert(false); 5275 break; 5276 } 5277 return ERROR_CODE_SUCCESS; 5278 } 5279 5280 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5281 int err; 5282 switch (power_mode){ 5283 case HCI_POWER_ON: 5284 err = hci_power_control_wake(); 5285 if (err) return err; 5286 hci_power_enter_initializing_state(); 5287 break; 5288 case HCI_POWER_OFF: 5289 hci_power_enter_halting_state(); 5290 break; 5291 case HCI_POWER_SLEEP: 5292 // do nothing 5293 break; 5294 default: 5295 btstack_assert(false); 5296 break; 5297 } 5298 return ERROR_CODE_SUCCESS; 5299 } 5300 5301 int hci_power_control(HCI_POWER_MODE power_mode){ 5302 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5303 btstack_run_loop_remove_timer(&hci_stack->timeout); 5304 int err = 0; 5305 switch (hci_stack->state){ 5306 case HCI_STATE_OFF: 5307 err = hci_power_control_state_off(power_mode); 5308 break; 5309 case HCI_STATE_INITIALIZING: 5310 err = hci_power_control_state_initializing(power_mode); 5311 break; 5312 case HCI_STATE_WORKING: 5313 err = hci_power_control_state_working(power_mode); 5314 break; 5315 case HCI_STATE_HALTING: 5316 err = hci_power_control_state_halting(power_mode); 5317 break; 5318 case HCI_STATE_FALLING_ASLEEP: 5319 err = hci_power_control_state_falling_asleep(power_mode); 5320 break; 5321 case HCI_STATE_SLEEPING: 5322 err = hci_power_control_state_sleeping(power_mode); 5323 break; 5324 default: 5325 btstack_assert(false); 5326 break; 5327 } 5328 if (err != 0){ 5329 return err; 5330 } 5331 5332 // create internal event 5333 hci_emit_state(); 5334 5335 // trigger next/first action 5336 hci_run(); 5337 5338 return 0; 5339 } 5340 5341 5342 static void hci_halting_run(void) { 5343 5344 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5345 5346 hci_connection_t *connection; 5347 #ifdef ENABLE_BLE 5348 #ifdef ENABLE_LE_PERIPHERAL 5349 bool stop_advertismenets; 5350 #endif 5351 #endif 5352 5353 switch (hci_stack->substate) { 5354 case HCI_HALTING_CLASSIC_STOP: 5355 #ifdef ENABLE_CLASSIC 5356 if (!hci_can_send_command_packet_now()) return; 5357 5358 if (hci_stack->connectable || hci_stack->discoverable){ 5359 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5360 hci_send_cmd(&hci_write_scan_enable, 0); 5361 return; 5362 } 5363 #endif 5364 /* fall through */ 5365 5366 case HCI_HALTING_LE_ADV_STOP: 5367 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5368 5369 #ifdef ENABLE_BLE 5370 #ifdef ENABLE_LE_PERIPHERAL 5371 if (!hci_can_send_command_packet_now()) return; 5372 5373 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5374 5375 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5376 if (hci_extended_advertising_supported()){ 5377 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5378 btstack_linked_list_iterator_t it; 5379 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5380 // stop all periodic advertisements and check if an extended set is active 5381 while (btstack_linked_list_iterator_has_next(&it)){ 5382 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5383 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5384 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5385 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5386 return; 5387 } 5388 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5389 stop_advertismenets = true; 5390 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5391 } 5392 } 5393 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5394 if (stop_advertismenets){ 5395 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5396 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5397 return; 5398 } 5399 } else 5400 #else /* ENABLE_LE_PERIPHERAL */ 5401 { 5402 if (stop_advertismenets) { 5403 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5404 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5405 return; 5406 } 5407 } 5408 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5409 #endif /* ENABLE_LE_PERIPHERAL */ 5410 #endif /* ENABLE_BLE */ 5411 5412 /* fall through */ 5413 5414 case HCI_HALTING_LE_SCAN_STOP: 5415 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5416 if (!hci_can_send_command_packet_now()) return; 5417 5418 #ifdef ENABLE_BLE 5419 #ifdef ENABLE_LE_CENTRAL 5420 if (hci_stack->le_scanning_active){ 5421 hci_le_scan_stop(); 5422 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5423 return; 5424 } 5425 #endif 5426 #endif 5427 5428 /* fall through */ 5429 5430 case HCI_HALTING_DISCONNECT_ALL: 5431 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5432 if (!hci_can_send_command_packet_now()) return; 5433 5434 // close all open connections 5435 connection = (hci_connection_t *) hci_stack->connections; 5436 if (connection) { 5437 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5438 5439 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5440 5441 // check state 5442 switch(connection->state) { 5443 case SENT_DISCONNECT: 5444 case RECEIVED_DISCONNECTION_COMPLETE: 5445 // wait until connection is gone 5446 return; 5447 default: 5448 break; 5449 } 5450 5451 // finally, send the disconnect command 5452 connection->state = SENT_DISCONNECT; 5453 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5454 return; 5455 } 5456 5457 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5458 // stop BIGs and BIG Syncs 5459 if (hci_stack->le_audio_bigs != NULL){ 5460 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5461 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5462 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5463 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5464 return; 5465 } 5466 if (hci_stack->le_audio_big_syncs != NULL){ 5467 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5468 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5469 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5470 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5471 return; 5472 } 5473 #endif 5474 5475 btstack_run_loop_remove_timer(&hci_stack->timeout); 5476 5477 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5478 log_info("HCI_STATE_HALTING: wait 50 ms"); 5479 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5480 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5481 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5482 btstack_run_loop_add_timer(&hci_stack->timeout); 5483 break; 5484 5485 case HCI_HALTING_W4_CLOSE_TIMER: 5486 // keep waiting 5487 break; 5488 5489 case HCI_HALTING_CLOSE: 5490 // close left over connections (that had not been properly closed before) 5491 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5492 hci_discard_connections(); 5493 5494 log_info("HCI_STATE_HALTING, calling off"); 5495 5496 // switch mode 5497 hci_power_control_off(); 5498 5499 log_info("HCI_STATE_HALTING, emitting state"); 5500 hci_emit_state(); 5501 log_info("HCI_STATE_HALTING, done"); 5502 break; 5503 5504 default: 5505 break; 5506 } 5507 }; 5508 5509 static void hci_falling_asleep_run(void){ 5510 hci_connection_t * connection; 5511 switch(hci_stack->substate) { 5512 case HCI_FALLING_ASLEEP_DISCONNECT: 5513 log_info("HCI_STATE_FALLING_ASLEEP"); 5514 // close all open connections 5515 connection = (hci_connection_t *) hci_stack->connections; 5516 if (connection){ 5517 5518 // send disconnect 5519 if (!hci_can_send_command_packet_now()) return; 5520 5521 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5522 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5523 5524 // send disconnected event right away - causes higher layer connections to get closed, too. 5525 hci_shutdown_connection(connection); 5526 return; 5527 } 5528 5529 if (hci_classic_supported()){ 5530 // disable page and inquiry scan 5531 if (!hci_can_send_command_packet_now()) return; 5532 5533 log_info("HCI_STATE_HALTING, disabling inq scans"); 5534 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5535 5536 // continue in next sub state 5537 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5538 break; 5539 } 5540 5541 /* fall through */ 5542 5543 case HCI_FALLING_ASLEEP_COMPLETE: 5544 log_info("HCI_STATE_HALTING, calling sleep"); 5545 // switch mode 5546 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5547 hci_emit_state(); 5548 break; 5549 5550 default: 5551 break; 5552 } 5553 } 5554 5555 #ifdef ENABLE_CLASSIC 5556 5557 static void hci_update_scan_enable(void){ 5558 // 2 = page scan, 1 = inq scan 5559 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5560 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5561 hci_run(); 5562 } 5563 5564 void gap_discoverable_control(uint8_t enable){ 5565 if (enable) enable = 1; // normalize argument 5566 5567 if (hci_stack->discoverable == enable){ 5568 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5569 return; 5570 } 5571 5572 hci_stack->discoverable = enable; 5573 hci_update_scan_enable(); 5574 } 5575 5576 void gap_connectable_control(uint8_t enable){ 5577 if (enable) enable = 1; // normalize argument 5578 5579 // don't emit event 5580 if (hci_stack->connectable == enable) return; 5581 5582 hci_stack->connectable = enable; 5583 hci_update_scan_enable(); 5584 } 5585 #endif 5586 5587 void gap_local_bd_addr(bd_addr_t address_buffer){ 5588 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5589 } 5590 5591 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5592 static void hci_host_num_completed_packets(void){ 5593 5594 // create packet manually as arrays are not supported and num_commands should not get reduced 5595 hci_reserve_packet_buffer(); 5596 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5597 5598 uint16_t size = 0; 5599 uint16_t num_handles = 0; 5600 packet[size++] = 0x35; 5601 packet[size++] = 0x0c; 5602 size++; // skip param len 5603 size++; // skip num handles 5604 5605 // add { handle, packets } entries 5606 btstack_linked_item_t * it; 5607 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5608 hci_connection_t * connection = (hci_connection_t *) it; 5609 if (connection->num_packets_completed){ 5610 little_endian_store_16(packet, size, connection->con_handle); 5611 size += 2; 5612 little_endian_store_16(packet, size, connection->num_packets_completed); 5613 size += 2; 5614 // 5615 num_handles++; 5616 connection->num_packets_completed = 0; 5617 } 5618 } 5619 5620 packet[2] = size - 3; 5621 packet[3] = num_handles; 5622 5623 hci_stack->host_completed_packets = 0; 5624 5625 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5626 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5627 5628 // release packet buffer for synchronous transport implementations 5629 if (hci_transport_synchronous()){ 5630 hci_release_packet_buffer(); 5631 hci_emit_transport_packet_sent(); 5632 } 5633 } 5634 #endif 5635 5636 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5637 UNUSED(ds); 5638 hci_stack->substate = HCI_HALTING_CLOSE; 5639 hci_halting_run(); 5640 } 5641 5642 static bool hci_run_acl_fragments(void){ 5643 if (hci_stack->acl_fragmentation_total_size > 0u) { 5644 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5645 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5646 if (connection) { 5647 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5648 hci_send_acl_packet_fragments(connection); 5649 return true; 5650 } 5651 } else { 5652 // connection gone -> discard further fragments 5653 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5654 hci_stack->acl_fragmentation_total_size = 0; 5655 hci_stack->acl_fragmentation_pos = 0; 5656 } 5657 } 5658 return false; 5659 } 5660 5661 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5662 static bool hci_run_iso_fragments(void){ 5663 if (hci_stack->iso_fragmentation_total_size > 0u) { 5664 // TODO: flow control 5665 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5666 hci_send_iso_packet_fragments(); 5667 return true; 5668 } 5669 } 5670 return false; 5671 } 5672 #endif 5673 5674 #ifdef ENABLE_CLASSIC 5675 5676 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5677 static bool hci_classic_operation_active(void) { 5678 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5679 return true; 5680 } 5681 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5682 return true; 5683 } 5684 btstack_linked_item_t * it; 5685 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5686 hci_connection_t *connection = (hci_connection_t *) it; 5687 switch (connection->state) { 5688 case SENT_CREATE_CONNECTION: 5689 case SENT_CANCEL_CONNECTION: 5690 case SENT_DISCONNECT: 5691 return true; 5692 default: 5693 break; 5694 } 5695 } 5696 return false; 5697 } 5698 #endif 5699 5700 static bool hci_run_general_gap_classic(void){ 5701 5702 // assert stack is working and classic is active 5703 if (hci_classic_supported() == false) return false; 5704 if (hci_stack->state != HCI_STATE_WORKING) return false; 5705 5706 // decline incoming connections 5707 if (hci_stack->decline_reason){ 5708 uint8_t reason = hci_stack->decline_reason; 5709 hci_stack->decline_reason = 0; 5710 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5711 return true; 5712 } 5713 5714 if (hci_stack->gap_tasks_classic != 0){ 5715 hci_run_gap_tasks_classic(); 5716 return true; 5717 } 5718 5719 // start/stop inquiry 5720 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5721 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5722 if (hci_classic_operation_active() == false) 5723 #endif 5724 { 5725 uint8_t duration = hci_stack->inquiry_state; 5726 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5727 if (hci_stack->inquiry_max_period_length != 0){ 5728 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); 5729 } else { 5730 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5731 } 5732 return true; 5733 } 5734 } 5735 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5736 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5737 hci_send_cmd(&hci_inquiry_cancel); 5738 return true; 5739 } 5740 5741 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5742 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5743 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5744 return true; 5745 } 5746 5747 // remote name request 5748 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5749 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5750 if (hci_classic_operation_active() == false) 5751 #endif 5752 { 5753 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5754 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5755 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5756 return true; 5757 } 5758 } 5759 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5760 // Local OOB data 5761 if (hci_stack->classic_read_local_oob_data){ 5762 hci_stack->classic_read_local_oob_data = false; 5763 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5764 hci_send_cmd(&hci_read_local_extended_oob_data); 5765 } else { 5766 hci_send_cmd(&hci_read_local_oob_data); 5767 } 5768 } 5769 #endif 5770 // pairing 5771 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5772 uint8_t state = hci_stack->gap_pairing_state; 5773 uint8_t pin_code[16]; 5774 switch (state){ 5775 case GAP_PAIRING_STATE_SEND_PIN: 5776 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5777 memset(pin_code, 0, 16); 5778 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5779 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5780 break; 5781 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5782 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5783 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5784 break; 5785 case GAP_PAIRING_STATE_SEND_PASSKEY: 5786 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5787 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5788 break; 5789 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5790 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5791 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5792 break; 5793 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5794 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5795 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5796 break; 5797 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5798 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5799 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5800 break; 5801 default: 5802 break; 5803 } 5804 return true; 5805 } 5806 return false; 5807 } 5808 #endif 5809 5810 #ifdef ENABLE_BLE 5811 5812 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5813 static uint8_t hci_le_num_phys(uint8_t phys){ 5814 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5815 btstack_assert(phys); 5816 return num_bits_set[phys]; 5817 } 5818 #endif 5819 5820 #ifdef ENABLE_LE_CENTRAL 5821 static void hci_le_scan_stop(void){ 5822 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5823 if (hci_extended_advertising_supported()) { 5824 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5825 } else 5826 #endif 5827 { 5828 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5829 } 5830 } 5831 5832 static void 5833 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5834 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5835 if (hci_extended_advertising_supported()) { 5836 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5837 uint16_t le_connection_scan_interval[3]; 5838 uint16_t le_connection_scan_window[3]; 5839 uint16_t le_connection_interval_min[3]; 5840 uint16_t le_connection_interval_max[3]; 5841 uint16_t le_connection_latency[3]; 5842 uint16_t le_supervision_timeout[3]; 5843 uint16_t le_minimum_ce_length[3]; 5844 uint16_t le_maximum_ce_length[3]; 5845 5846 uint8_t i; 5847 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5848 for (i=0;i<num_phys;i++){ 5849 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5850 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5851 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5852 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5853 le_connection_latency[i] = hci_stack->le_connection_latency; 5854 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5855 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5856 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5857 } 5858 hci_send_cmd(&hci_le_extended_create_connection, 5859 initiator_filter_policy, 5860 hci_stack->le_connection_own_addr_type, // our addr type: 5861 address_type, // peer address type 5862 address, // peer bd addr 5863 hci_stack->le_connection_phys, // initiating PHY 5864 le_connection_scan_interval, // conn scan interval 5865 le_connection_scan_window, // conn scan windows 5866 le_connection_interval_min, // conn interval min 5867 le_connection_interval_max, // conn interval max 5868 le_connection_latency, // conn latency 5869 le_supervision_timeout, // conn latency 5870 le_minimum_ce_length, // min ce length 5871 le_maximum_ce_length // max ce length 5872 ); 5873 } else 5874 #endif 5875 { 5876 hci_send_cmd(&hci_le_create_connection, 5877 hci_stack->le_connection_scan_interval, // conn scan interval 5878 hci_stack->le_connection_scan_window, // conn scan windows 5879 initiator_filter_policy, // don't use whitelist 5880 address_type, // peer address type 5881 address, // peer bd addr 5882 hci_stack->le_connection_own_addr_type, // our addr type: 5883 hci_stack->le_connection_interval_min, // conn interval min 5884 hci_stack->le_connection_interval_max, // conn interval max 5885 hci_stack->le_connection_latency, // conn latency 5886 hci_stack->le_supervision_timeout, // conn latency 5887 hci_stack->le_minimum_ce_length, // min ce length 5888 hci_stack->le_maximum_ce_length // max ce length 5889 ); 5890 } 5891 } 5892 #endif 5893 5894 #ifdef ENABLE_LE_PERIPHERAL 5895 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5896 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5897 uint8_t operation = 0; 5898 if (pos == 0){ 5899 // first fragment or complete data 5900 operation |= 1; 5901 } 5902 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5903 // last fragment or complete data 5904 operation |= 2; 5905 } 5906 return operation; 5907 } 5908 #endif 5909 #endif 5910 5911 static bool hci_run_general_gap_le(void){ 5912 5913 btstack_linked_list_iterator_t lit; 5914 5915 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5916 if (hci_stack->le_resolvable_private_address_update_s > 0){ 5917 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 5918 hci_stack->le_resolvable_private_address_update_s = 0; 5919 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 5920 return true; 5921 } 5922 #endif 5923 5924 // Phase 1: collect what to stop 5925 5926 #ifdef ENABLE_LE_CENTRAL 5927 bool scanning_stop = false; 5928 bool connecting_stop = false; 5929 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5930 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5931 bool periodic_sync_stop = false; 5932 #endif 5933 #endif 5934 #endif 5935 5936 #ifdef ENABLE_LE_PERIPHERAL 5937 bool advertising_stop = false; 5938 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5939 le_advertising_set_t * advertising_stop_set = NULL; 5940 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5941 bool periodic_advertising_stop = false; 5942 #endif 5943 #endif 5944 #endif 5945 5946 // check if own address changes 5947 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5948 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5949 5950 // check if whitelist needs modification 5951 bool whitelist_modification_pending = false; 5952 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5953 while (btstack_linked_list_iterator_has_next(&lit)){ 5954 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5955 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5956 whitelist_modification_pending = true; 5957 break; 5958 } 5959 } 5960 5961 // check if resolving list needs modification 5962 bool resolving_list_modification_pending = false; 5963 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5964 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5965 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5966 resolving_list_modification_pending = true; 5967 } 5968 #endif 5969 5970 #ifdef ENABLE_LE_CENTRAL 5971 5972 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5973 // check if periodic advertiser list needs modification 5974 bool periodic_list_modification_pending = false; 5975 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5976 while (btstack_linked_list_iterator_has_next(&lit)){ 5977 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5978 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5979 periodic_list_modification_pending = true; 5980 break; 5981 } 5982 } 5983 #endif 5984 5985 // scanning control 5986 if (hci_stack->le_scanning_active) { 5987 // stop if: 5988 // - parameter change required 5989 // - it's disabled 5990 // - whitelist change required but used for scanning 5991 // - resolving list modified 5992 // - own address changes 5993 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5994 if ((hci_stack->le_scanning_param_update) || 5995 !hci_stack->le_scanning_enabled || 5996 (scanning_uses_whitelist && whitelist_modification_pending) || 5997 resolving_list_modification_pending || 5998 random_address_change){ 5999 6000 scanning_stop = true; 6001 } 6002 } 6003 6004 // connecting control 6005 bool connecting_with_whitelist; 6006 switch (hci_stack->le_connecting_state){ 6007 case LE_CONNECTING_DIRECT: 6008 case LE_CONNECTING_WHITELIST: 6009 // stop connecting if: 6010 // - connecting uses white and whitelist modification pending 6011 // - if it got disabled 6012 // - resolving list modified 6013 // - own address changes 6014 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6015 if ((connecting_with_whitelist && whitelist_modification_pending) || 6016 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6017 resolving_list_modification_pending || 6018 random_address_change) { 6019 6020 connecting_stop = true; 6021 } 6022 break; 6023 default: 6024 break; 6025 } 6026 6027 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6028 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6029 // periodic sync control 6030 bool sync_with_advertiser_list; 6031 switch(hci_stack->le_periodic_sync_state){ 6032 case LE_CONNECTING_DIRECT: 6033 case LE_CONNECTING_WHITELIST: 6034 // stop sync if: 6035 // - sync with advertiser list and advertiser list modification pending 6036 // - if it got disabled 6037 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6038 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6039 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6040 periodic_sync_stop = true; 6041 } 6042 break; 6043 default: 6044 break; 6045 } 6046 #endif 6047 #endif 6048 6049 #endif /* ENABLE_LE_CENTRAL */ 6050 6051 #ifdef ENABLE_LE_PERIPHERAL 6052 // le advertisement control 6053 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6054 // stop if: 6055 // - parameter change required 6056 // - random address used in advertising and changes 6057 // - it's disabled 6058 // - whitelist change required but used for advertisement filter policy 6059 // - resolving list modified 6060 // - own address changes 6061 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6062 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6063 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6064 if (advertising_change || 6065 (advertising_uses_random_address && random_address_change) || 6066 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6067 (advertising_uses_whitelist && whitelist_modification_pending) || 6068 resolving_list_modification_pending || 6069 random_address_change) { 6070 6071 advertising_stop = true; 6072 } 6073 } 6074 6075 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6076 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6077 btstack_linked_list_iterator_t it; 6078 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6079 while (btstack_linked_list_iterator_has_next(&it)){ 6080 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6081 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6082 // stop if: 6083 // - parameter change required 6084 // - random address used in connectable advertising and changes 6085 // - it's disabled 6086 // - whitelist change required but used for advertisement filter policy 6087 // - resolving list modified 6088 // - own address changes 6089 // - advertisement set will be removed 6090 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6091 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6092 bool advertising_uses_random_address = 6093 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6094 advertising_connectable; 6095 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6096 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6097 bool advertising_set_random_address_change = 6098 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6099 bool advertising_set_will_be_removed = 6100 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6101 if (advertising_parameter_change || 6102 (advertising_uses_random_address && advertising_set_random_address_change) || 6103 (advertising_enabled == false) || 6104 (advertising_uses_whitelist && whitelist_modification_pending) || 6105 resolving_list_modification_pending || 6106 advertising_set_will_be_removed) { 6107 6108 advertising_stop = true; 6109 advertising_stop_set = advertising_set; 6110 break; 6111 } 6112 } 6113 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6114 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6115 // stop if: 6116 // - it's disabled 6117 // - parameter change required 6118 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6119 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6120 if ((periodic_enabled == false) || periodic_parameter_change){ 6121 periodic_advertising_stop = true; 6122 advertising_stop_set = advertising_set; 6123 } 6124 } 6125 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6126 } 6127 } 6128 #endif 6129 6130 #endif 6131 6132 6133 // Phase 2: stop everything that should be off during modifications 6134 6135 6136 // 2.1 Outgoing connection 6137 #ifdef ENABLE_LE_CENTRAL 6138 if (connecting_stop){ 6139 hci_send_cmd(&hci_le_create_connection_cancel); 6140 return true; 6141 } 6142 #endif 6143 6144 // 2.2 Scanning 6145 #ifdef ENABLE_LE_CENTRAL 6146 if (scanning_stop){ 6147 hci_stack->le_scanning_active = false; 6148 hci_le_scan_stop(); 6149 return true; 6150 } 6151 6152 // 2.3 Periodic Sync 6153 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6154 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6155 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6156 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6157 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6158 return true; 6159 } 6160 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6161 if (periodic_sync_stop){ 6162 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6163 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6164 return true; 6165 } 6166 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6167 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6168 #endif /* ENABLE_LE_CENTRAL */ 6169 6170 // 2.4 Advertising: legacy, extended, periodic 6171 #ifdef ENABLE_LE_PERIPHERAL 6172 if (advertising_stop){ 6173 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6174 if (hci_extended_advertising_supported()) { 6175 uint8_t advertising_stop_handle; 6176 if (advertising_stop_set != NULL){ 6177 advertising_stop_handle = advertising_stop_set->advertising_handle; 6178 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6179 } else { 6180 advertising_stop_handle = 0; 6181 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6182 } 6183 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6184 const uint16_t durations[] = { 0 }; 6185 const uint16_t max_events[] = { 0 }; 6186 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6187 } else 6188 #endif 6189 { 6190 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6191 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6192 } 6193 return true; 6194 } 6195 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6196 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6197 if (periodic_advertising_stop){ 6198 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6199 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6200 return true; 6201 } 6202 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6203 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6204 #endif /* ENABLE_LE_PERIPHERAL */ 6205 6206 6207 // Phase 3: modify 6208 6209 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6210 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6211 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6212 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6213 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6214 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6215 #endif 6216 return true; 6217 } 6218 6219 #ifdef ENABLE_LE_CENTRAL 6220 if (hci_stack->le_scanning_param_update){ 6221 hci_stack->le_scanning_param_update = false; 6222 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6223 if (hci_extended_advertising_supported()){ 6224 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6225 uint8_t scan_types[2]; 6226 uint16_t scan_intervals[2]; 6227 uint16_t scan_windows[2]; 6228 6229 uint8_t i; 6230 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6231 for (i=0;i<num_phys;i++){ 6232 scan_types[i] = hci_stack->le_scan_type; 6233 scan_intervals[i] = hci_stack->le_scan_interval; 6234 scan_windows[i] = hci_stack->le_scan_window; 6235 } 6236 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6237 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6238 } else 6239 #endif 6240 { 6241 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6242 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6243 } 6244 return true; 6245 } 6246 #endif 6247 6248 #ifdef ENABLE_LE_PERIPHERAL 6249 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6250 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6251 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6252 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6253 if (hci_extended_advertising_supported()){ 6254 // map advertisment type to advertising event properties 6255 uint16_t adv_event_properties = 0; 6256 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6257 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6258 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6259 } 6260 hci_stack->le_advertising_set_in_current_command = 0; 6261 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6262 0, 6263 adv_event_properties, 6264 hci_stack->le_advertisements_interval_min, 6265 hci_stack->le_advertisements_interval_max, 6266 hci_stack->le_advertisements_channel_map, 6267 hci_stack->le_advertisements_own_addr_type, 6268 hci_stack->le_advertisements_direct_address_type, 6269 hci_stack->le_advertisements_direct_address, 6270 hci_stack->le_advertisements_filter_policy, 6271 0x7f, // tx power: no preference 6272 0x01, // primary adv phy: LE 1M 6273 0, // secondary adv max skip 6274 0x01, // secondary adv phy 6275 0, // adv sid 6276 0 // scan request notification 6277 ); 6278 } else 6279 #endif 6280 { 6281 hci_send_cmd(&hci_le_set_advertising_parameters, 6282 hci_stack->le_advertisements_interval_min, 6283 hci_stack->le_advertisements_interval_max, 6284 hci_stack->le_advertisements_type, 6285 hci_stack->le_advertisements_own_addr_type, 6286 hci_stack->le_advertisements_direct_address_type, 6287 hci_stack->le_advertisements_direct_address, 6288 hci_stack->le_advertisements_channel_map, 6289 hci_stack->le_advertisements_filter_policy); 6290 } 6291 return true; 6292 } 6293 6294 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6295 // assumption: only set if extended advertising is supported 6296 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6297 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6298 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6299 return true; 6300 } 6301 #endif 6302 6303 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6304 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6305 uint8_t adv_data_clean[31]; 6306 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6307 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6308 hci_stack->le_advertisements_data_len); 6309 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6310 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6311 if (hci_extended_advertising_supported()){ 6312 hci_stack->le_advertising_set_in_current_command = 0; 6313 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6314 } else 6315 #endif 6316 { 6317 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6318 } 6319 return true; 6320 } 6321 6322 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6323 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6324 uint8_t scan_data_clean[31]; 6325 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6326 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6327 hci_stack->le_scan_response_data_len); 6328 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6329 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6330 if (hci_extended_advertising_supported()){ 6331 hci_stack->le_advertising_set_in_current_command = 0; 6332 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6333 } else 6334 #endif 6335 { 6336 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6337 } 6338 return true; 6339 } 6340 6341 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6342 if (hci_extended_advertising_supported()) { 6343 btstack_linked_list_iterator_t it; 6344 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6345 while (btstack_linked_list_iterator_has_next(&it)){ 6346 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6347 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6348 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6349 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6350 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6351 return true; 6352 } 6353 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6354 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6355 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6356 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6357 advertising_set->advertising_handle, 6358 advertising_set->extended_params.advertising_event_properties, 6359 advertising_set->extended_params.primary_advertising_interval_min, 6360 advertising_set->extended_params.primary_advertising_interval_max, 6361 advertising_set->extended_params.primary_advertising_channel_map, 6362 advertising_set->extended_params.own_address_type, 6363 advertising_set->extended_params.peer_address_type, 6364 advertising_set->extended_params.peer_address, 6365 advertising_set->extended_params.advertising_filter_policy, 6366 advertising_set->extended_params.advertising_tx_power, 6367 advertising_set->extended_params.primary_advertising_phy, 6368 advertising_set->extended_params.secondary_advertising_max_skip, 6369 advertising_set->extended_params.secondary_advertising_phy, 6370 advertising_set->extended_params.advertising_sid, 6371 advertising_set->extended_params.scan_request_notification_enable 6372 ); 6373 return true; 6374 } 6375 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6376 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6377 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6378 return true; 6379 } 6380 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6381 uint16_t pos = advertising_set->adv_data_pos; 6382 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6383 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6384 if ((operation & 0x02) != 0){ 6385 // last fragment or complete data 6386 operation |= 2; 6387 advertising_set->adv_data_pos = 0; 6388 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6389 } else { 6390 advertising_set->adv_data_pos += data_to_upload; 6391 } 6392 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6393 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6394 return true; 6395 } 6396 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6397 uint16_t pos = advertising_set->scan_data_pos; 6398 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6399 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6400 if ((operation & 0x02) != 0){ 6401 advertising_set->scan_data_pos = 0; 6402 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6403 } else { 6404 advertising_set->scan_data_pos += data_to_upload; 6405 } 6406 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6407 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6408 return true; 6409 } 6410 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6411 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6412 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6413 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6414 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6415 advertising_set->advertising_handle, 6416 advertising_set->periodic_params.periodic_advertising_interval_min, 6417 advertising_set->periodic_params.periodic_advertising_interval_max, 6418 advertising_set->periodic_params.periodic_advertising_properties); 6419 return true; 6420 } 6421 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6422 uint16_t pos = advertising_set->periodic_data_pos; 6423 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6424 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6425 if ((operation & 0x02) != 0){ 6426 // last fragment or complete data 6427 operation |= 2; 6428 advertising_set->periodic_data_pos = 0; 6429 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6430 } else { 6431 advertising_set->periodic_data_pos += data_to_upload; 6432 } 6433 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6434 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6435 return true; 6436 } 6437 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6438 } 6439 } 6440 #endif 6441 6442 #endif 6443 6444 #ifdef ENABLE_LE_CENTRAL 6445 // if connect with whitelist was active and is not cancelled yet, wait until next time 6446 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6447 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6448 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6449 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6450 #endif 6451 #endif 6452 6453 // LE Whitelist Management 6454 if (whitelist_modification_pending){ 6455 // add/remove entries 6456 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6457 while (btstack_linked_list_iterator_has_next(&lit)){ 6458 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6459 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6460 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6461 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6462 bd_addr_type_t address_type = entry->address_type; 6463 bd_addr_t address; 6464 memcpy(address, entry->address, 6); 6465 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6466 // remove from whitelist if not scheduled for re-addition 6467 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6468 btstack_memory_whitelist_entry_free(entry); 6469 } 6470 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6471 return true; 6472 } 6473 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6474 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6475 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6476 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6477 return true; 6478 } 6479 } 6480 } 6481 6482 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6483 // LE Resolving List Management 6484 if (resolving_list_supported) { 6485 uint16_t i; 6486 switch (hci_stack->le_resolving_list_state) { 6487 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6488 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6489 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6490 return true; 6491 case LE_RESOLVING_LIST_READ_SIZE: 6492 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6493 hci_send_cmd(&hci_le_read_resolving_list_size); 6494 return true; 6495 case LE_RESOLVING_LIST_SEND_CLEAR: 6496 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6497 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6498 sizeof(hci_stack->le_resolving_list_add_entries)); 6499 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6500 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6501 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6502 sizeof(hci_stack->le_resolving_list_remove_entries)); 6503 hci_send_cmd(&hci_le_clear_resolving_list); 6504 return true; 6505 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6506 // first remove old entries 6507 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6508 uint8_t offset = i >> 3; 6509 uint8_t mask = 1 << (i & 7); 6510 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6511 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6512 bd_addr_t peer_identity_addreses; 6513 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6514 sm_key_t peer_irk; 6515 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6516 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6517 6518 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6519 // trigger whitelist entry 'update' (work around for controller bug) 6520 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6521 while (btstack_linked_list_iterator_has_next(&lit)) { 6522 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6523 if (entry->address_type != peer_identity_addr_type) continue; 6524 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6525 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6526 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6527 } 6528 #endif 6529 6530 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6531 peer_identity_addreses); 6532 return true; 6533 } 6534 6535 // then add new entries 6536 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6537 uint8_t offset = i >> 3; 6538 uint8_t mask = 1 << (i & 7); 6539 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6540 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6541 bd_addr_t peer_identity_addreses; 6542 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6543 sm_key_t peer_irk; 6544 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6545 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6546 if (btstack_is_null(peer_irk, 16)) continue; 6547 const uint8_t *local_irk = gap_get_persistent_irk(); 6548 // command uses format specifier 'P' that stores 16-byte value without flip 6549 uint8_t local_irk_flipped[16]; 6550 uint8_t peer_irk_flipped[16]; 6551 reverse_128(local_irk, local_irk_flipped); 6552 reverse_128(peer_irk, peer_irk_flipped); 6553 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6554 peer_irk_flipped, local_irk_flipped); 6555 return true; 6556 } 6557 6558 // finally, set privacy mode 6559 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6560 uint8_t offset = i >> 3; 6561 uint8_t mask = 1 << (i & 7); 6562 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6563 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6564 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6565 // Network Privacy Mode is default 6566 continue; 6567 } 6568 bd_addr_t peer_identity_address; 6569 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6570 sm_key_t peer_irk; 6571 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6572 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6573 if (btstack_is_null(peer_irk, 16)) continue; 6574 // command uses format specifier 'P' that stores 16-byte value without flip 6575 uint8_t peer_irk_flipped[16]; 6576 reverse_128(peer_irk, peer_irk_flipped); 6577 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6578 return true; 6579 } 6580 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6581 break; 6582 6583 default: 6584 break; 6585 } 6586 } 6587 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6588 #endif 6589 6590 #ifdef ENABLE_LE_CENTRAL 6591 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6592 // LE Whitelist Management 6593 if (periodic_list_modification_pending){ 6594 // add/remove entries 6595 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6596 while (btstack_linked_list_iterator_has_next(&lit)){ 6597 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6598 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6599 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6600 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6601 return true; 6602 } 6603 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6604 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6605 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6606 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6607 return true; 6608 } 6609 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6610 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6611 btstack_memory_periodic_advertiser_list_entry_free(entry); 6612 } 6613 } 6614 } 6615 #endif 6616 #endif 6617 6618 #ifdef ENABLE_LE_CENTRAL 6619 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6620 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6621 if (hci_stack->le_past_set_default_params){ 6622 hci_stack->le_past_set_default_params = false; 6623 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6624 hci_stack->le_past_mode, 6625 hci_stack->le_past_skip, 6626 hci_stack->le_past_sync_timeout, 6627 hci_stack->le_past_cte_type); 6628 return true; 6629 } 6630 #endif 6631 #endif 6632 #endif 6633 6634 // post-pone all actions until stack is fully working 6635 if (hci_stack->state != HCI_STATE_WORKING) return false; 6636 6637 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6638 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6639 6640 // Phase 4: restore state 6641 6642 #ifdef ENABLE_LE_CENTRAL 6643 // re-start scanning 6644 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6645 hci_stack->le_scanning_active = true; 6646 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6647 if (hci_extended_advertising_supported()){ 6648 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6649 } else 6650 #endif 6651 { 6652 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6653 } 6654 return true; 6655 } 6656 #endif 6657 6658 #ifdef ENABLE_LE_CENTRAL 6659 // re-start connecting 6660 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6661 bd_addr_t null_addr; 6662 memset(null_addr, 0, 6); 6663 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6664 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6665 hci_send_le_create_connection(1, 0, null_addr); 6666 return true; 6667 } 6668 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6669 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6670 switch(hci_stack->le_periodic_sync_request){ 6671 case LE_CONNECTING_DIRECT: 6672 case LE_CONNECTING_WHITELIST: 6673 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6674 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6675 hci_stack->le_periodic_sync_options, 6676 hci_stack->le_periodic_sync_advertising_sid, 6677 hci_stack->le_periodic_sync_advertiser_address_type, 6678 hci_stack->le_periodic_sync_advertiser_address, 6679 hci_stack->le_periodic_sync_skip, 6680 hci_stack->le_periodic_sync_timeout, 6681 hci_stack->le_periodic_sync_cte_type); 6682 return true; 6683 default: 6684 break; 6685 } 6686 } 6687 #endif 6688 #endif 6689 6690 #ifdef ENABLE_LE_PERIPHERAL 6691 // re-start advertising 6692 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6693 // check if advertisements should be enabled given 6694 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6695 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6696 6697 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6698 if (hci_extended_advertising_supported()){ 6699 const uint8_t advertising_handles[] = { 0 }; 6700 const uint16_t durations[] = { 0 }; 6701 const uint16_t max_events[] = { 0 }; 6702 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6703 } else 6704 #endif 6705 { 6706 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6707 } 6708 return true; 6709 } 6710 6711 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6712 if (hci_extended_advertising_supported()) { 6713 btstack_linked_list_iterator_t it; 6714 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6715 while (btstack_linked_list_iterator_has_next(&it)) { 6716 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6717 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6718 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6719 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6720 const uint16_t durations[] = { advertising_set->enable_timeout }; 6721 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6722 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6723 return true; 6724 } 6725 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6726 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6727 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6728 uint8_t enable = 1; 6729 if (advertising_set->periodic_include_adi){ 6730 enable |= 2; 6731 } 6732 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6733 return true; 6734 } 6735 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6736 } 6737 } 6738 #endif 6739 #endif 6740 6741 return false; 6742 } 6743 6744 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6745 static bool hci_run_iso_tasks(void){ 6746 btstack_linked_list_iterator_t it; 6747 6748 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6749 return false; 6750 } 6751 6752 // BIG 6753 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6754 while (btstack_linked_list_iterator_has_next(&it)){ 6755 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6756 switch (big->state){ 6757 case LE_AUDIO_BIG_STATE_CREATE: 6758 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6759 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6760 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6761 hci_send_cmd(&hci_le_create_big, 6762 big->params->big_handle, 6763 big->params->advertising_handle, 6764 big->params->num_bis, 6765 big->params->sdu_interval_us, 6766 big->params->max_sdu, 6767 big->params->max_transport_latency_ms, 6768 big->params->rtn, 6769 big->params->phy, 6770 big->params->packing, 6771 big->params->framing, 6772 big->params->encryption, 6773 big->params->broadcast_code); 6774 return true; 6775 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6776 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6777 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); 6778 return true; 6779 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6780 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6781 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6782 return true; 6783 case LE_AUDIO_BIG_STATE_TERMINATE: 6784 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6785 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6786 return true; 6787 default: 6788 break; 6789 } 6790 } 6791 6792 // BIG Sync 6793 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6794 while (btstack_linked_list_iterator_has_next(&it)){ 6795 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6796 switch (big_sync->state){ 6797 case LE_AUDIO_BIG_STATE_CREATE: 6798 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6799 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6800 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6801 hci_send_cmd(&hci_le_big_create_sync, 6802 big_sync->params->big_handle, 6803 big_sync->params->sync_handle, 6804 big_sync->params->encryption, 6805 big_sync->params->broadcast_code, 6806 big_sync->params->mse, 6807 big_sync->params->big_sync_timeout_10ms, 6808 big_sync->params->num_bis, 6809 big_sync->params->bis_indices); 6810 return true; 6811 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6812 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6813 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); 6814 return true; 6815 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6816 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6817 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6818 return true; 6819 case LE_AUDIO_BIG_STATE_TERMINATE: 6820 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6821 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6822 return true; 6823 default: 6824 break; 6825 } 6826 } 6827 6828 // CIG 6829 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6830 while (btstack_linked_list_iterator_has_next(&it)) { 6831 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6832 uint8_t i; 6833 // Set CIG Parameters 6834 uint8_t cis_id[MAX_NR_CIS]; 6835 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6836 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6837 uint8_t phy_c_to_p[MAX_NR_CIS]; 6838 uint8_t phy_p_to_c[MAX_NR_CIS]; 6839 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6840 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6841 switch (cig->state) { 6842 case LE_AUDIO_CIG_STATE_CREATE: 6843 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6844 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6845 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6846 le_audio_cig_params_t * params = cig->params; 6847 for (i = 0; i < params->num_cis; i++) { 6848 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6849 cis_id[i] = cis_params->cis_id; 6850 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6851 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6852 phy_c_to_p[i] = cis_params->phy_c_to_p; 6853 phy_p_to_c[i] = cis_params->phy_p_to_c; 6854 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6855 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6856 } 6857 hci_send_cmd(&hci_le_set_cig_parameters, 6858 cig->cig_id, 6859 params->sdu_interval_c_to_p, 6860 params->sdu_interval_p_to_c, 6861 params->worst_case_sca, 6862 params->packing, 6863 params->framing, 6864 params->max_transport_latency_c_to_p, 6865 params->max_transport_latency_p_to_c, 6866 params->num_cis, 6867 cis_id, 6868 max_sdu_c_to_p, 6869 max_sdu_p_to_c, 6870 phy_c_to_p, 6871 phy_p_to_c, 6872 rtn_c_to_p, 6873 rtn_p_to_c 6874 ); 6875 return true; 6876 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6877 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6878 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6879 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6880 for (i=0;i<cig->num_cis;i++){ 6881 cig->cis_setup_active[i] = true; 6882 } 6883 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6884 return true; 6885 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6886 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6887 // find next path to setup 6888 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6889 if (cig->cis_established[cis_index] == false) { 6890 continue; 6891 } 6892 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6893 bool setup = true; 6894 if (cis_direction == 0){ 6895 // 0 - input - host to controller 6896 // we are central => central to peripheral 6897 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6898 } else { 6899 // 1 - output - controller to host 6900 // we are central => peripheral to central 6901 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6902 } 6903 if (setup){ 6904 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6905 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6906 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6907 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); 6908 return true; 6909 } 6910 cig->state_vars.next_cis++; 6911 } 6912 // emit done 6913 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6914 default: 6915 break; 6916 } 6917 } 6918 6919 // CIS Accept/Reject 6920 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6921 while (btstack_linked_list_iterator_has_next(&it)) { 6922 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6923 hci_con_handle_t con_handle; 6924 switch (iso_stream->state){ 6925 case HCI_ISO_STREAM_W2_ACCEPT: 6926 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6927 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6928 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6929 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6930 return true; 6931 case HCI_ISO_STREAM_W2_REJECT: 6932 con_handle = iso_stream->cis_handle; 6933 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6934 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6935 hci_iso_stream_finalize(iso_stream); 6936 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6937 return true; 6938 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6939 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6940 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6941 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6942 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); 6943 break; 6944 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6945 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6946 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6947 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6948 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); 6949 break; 6950 default: 6951 break; 6952 } 6953 } 6954 6955 return false; 6956 } 6957 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6958 #endif 6959 6960 static bool hci_run_general_pending_commands(void){ 6961 btstack_linked_item_t * it; 6962 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6963 hci_connection_t * connection = (hci_connection_t *) it; 6964 6965 switch(connection->state){ 6966 case SEND_CREATE_CONNECTION: 6967 switch(connection->address_type){ 6968 #ifdef ENABLE_CLASSIC 6969 case BD_ADDR_TYPE_ACL: 6970 log_info("sending hci_create_connection"); 6971 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6972 break; 6973 #endif 6974 default: 6975 #ifdef ENABLE_BLE 6976 #ifdef ENABLE_LE_CENTRAL 6977 log_info("sending hci_le_create_connection"); 6978 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6979 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6980 hci_send_le_create_connection(0, connection->address_type, connection->address); 6981 connection->state = SENT_CREATE_CONNECTION; 6982 #endif 6983 #endif 6984 break; 6985 } 6986 return true; 6987 6988 #ifdef ENABLE_CLASSIC 6989 case RECEIVED_CONNECTION_REQUEST: 6990 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6991 log_info("sending hci_accept_connection_request"); 6992 connection->state = ACCEPTED_CONNECTION_REQUEST; 6993 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6994 return true; 6995 } 6996 break; 6997 #endif 6998 case SEND_DISCONNECT: 6999 connection->state = SENT_DISCONNECT; 7000 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7001 return true; 7002 7003 default: 7004 break; 7005 } 7006 7007 // no further commands if connection is about to get shut down 7008 if (connection->state == SENT_DISCONNECT) continue; 7009 7010 #ifdef ENABLE_CLASSIC 7011 7012 // Handling link key request requires remote supported features 7013 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7014 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7015 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7016 7017 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7018 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7019 if (have_link_key && security_level_sufficient){ 7020 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7021 } else { 7022 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7023 } 7024 return true; 7025 } 7026 7027 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7028 log_info("denying to pin request"); 7029 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7030 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7031 return true; 7032 } 7033 7034 // security assessment requires remote features 7035 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7036 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7037 hci_ssp_assess_security_on_io_cap_request(connection); 7038 // 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 7039 } 7040 7041 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7042 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7043 // set authentication requirements: 7044 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7045 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7046 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7047 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7048 authreq |= 1; 7049 } 7050 bool bonding = hci_stack->bondable; 7051 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7052 // if we have received IO Cap Response, we're in responder role 7053 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7054 if (bonding && !remote_bonding){ 7055 log_info("Remote not bonding, dropping local flag"); 7056 bonding = false; 7057 } 7058 } 7059 if (bonding){ 7060 if (connection->bonding_flags & BONDING_DEDICATED){ 7061 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7062 } else { 7063 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7064 } 7065 } 7066 uint8_t have_oob_data = 0; 7067 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7068 if (connection->classic_oob_c_192 != NULL){ 7069 have_oob_data |= 1; 7070 } 7071 if (connection->classic_oob_c_256 != NULL){ 7072 have_oob_data |= 2; 7073 } 7074 #endif 7075 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7076 return true; 7077 } 7078 7079 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7080 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7081 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7082 return true; 7083 } 7084 7085 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7086 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7087 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7088 const uint8_t zero[16] = { 0 }; 7089 const uint8_t * r_192 = zero; 7090 const uint8_t * c_192 = zero; 7091 const uint8_t * r_256 = zero; 7092 const uint8_t * c_256 = zero; 7093 // verify P-256 OOB 7094 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7095 c_256 = connection->classic_oob_c_256; 7096 if (connection->classic_oob_r_256 != NULL) { 7097 r_256 = connection->classic_oob_r_256; 7098 } 7099 } 7100 // verify P-192 OOB 7101 if ((connection->classic_oob_c_192 != NULL)) { 7102 c_192 = connection->classic_oob_c_192; 7103 if (connection->classic_oob_r_192 != NULL) { 7104 r_192 = connection->classic_oob_r_192; 7105 } 7106 } 7107 7108 // assess security 7109 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7110 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7111 if (need_level_4 && !can_reach_level_4){ 7112 log_info("Level 4 required, but not possible -> abort"); 7113 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7114 // send oob negative reply 7115 c_256 = NULL; 7116 c_192 = NULL; 7117 } 7118 7119 // Reply 7120 if (c_256 != zero) { 7121 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7122 } else if (c_192 != zero){ 7123 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7124 } else { 7125 hci_stack->classic_oob_con_handle = connection->con_handle; 7126 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7127 } 7128 return true; 7129 } 7130 #endif 7131 7132 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7133 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7134 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7135 return true; 7136 } 7137 7138 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7139 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7140 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7141 return true; 7142 } 7143 7144 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7145 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7146 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7147 return true; 7148 } 7149 7150 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7151 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7152 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7153 connection->state = SENT_DISCONNECT; 7154 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7155 return true; 7156 } 7157 7158 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7159 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7160 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7161 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7162 return true; 7163 } 7164 7165 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7166 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7167 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7168 return true; 7169 } 7170 7171 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7172 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7173 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7174 return true; 7175 } 7176 7177 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7178 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7179 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7180 return true; 7181 } 7182 7183 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7184 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7185 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7186 return true; 7187 } 7188 7189 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7190 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7191 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7192 return true; 7193 } 7194 #endif 7195 7196 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7197 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7198 #ifdef ENABLE_CLASSIC 7199 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7200 #endif 7201 if (connection->state != SENT_DISCONNECT){ 7202 connection->state = SENT_DISCONNECT; 7203 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7204 return true; 7205 } 7206 } 7207 7208 #ifdef ENABLE_CLASSIC 7209 uint16_t sniff_min_interval; 7210 switch (connection->sniff_min_interval){ 7211 case 0: 7212 break; 7213 case 0xffff: 7214 connection->sniff_min_interval = 0; 7215 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7216 return true; 7217 default: 7218 sniff_min_interval = connection->sniff_min_interval; 7219 connection->sniff_min_interval = 0; 7220 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7221 return true; 7222 } 7223 7224 if (connection->sniff_subrating_max_latency != 0xffff){ 7225 uint16_t max_latency = connection->sniff_subrating_max_latency; 7226 connection->sniff_subrating_max_latency = 0; 7227 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7228 return true; 7229 } 7230 7231 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7232 uint8_t service_type = (uint8_t) connection->qos_service_type; 7233 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7234 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); 7235 return true; 7236 } 7237 7238 if (connection->request_role != HCI_ROLE_INVALID){ 7239 hci_role_t role = connection->request_role; 7240 connection->request_role = HCI_ROLE_INVALID; 7241 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7242 return true; 7243 } 7244 #endif 7245 7246 if (connection->gap_connection_tasks != 0){ 7247 #ifdef ENABLE_CLASSIC 7248 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7249 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7250 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7251 return true; 7252 } 7253 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7254 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7255 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7256 return true; 7257 } 7258 #endif 7259 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7260 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7261 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7262 return true; 7263 } 7264 #ifdef ENABLE_BLE 7265 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7266 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7267 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7268 return true; 7269 } 7270 #endif 7271 } 7272 7273 #ifdef ENABLE_BLE 7274 switch (connection->le_con_parameter_update_state){ 7275 // response to L2CAP CON PARAMETER UPDATE REQUEST 7276 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7277 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7278 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7279 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7280 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7281 return true; 7282 case CON_PARAMETER_UPDATE_REPLY: 7283 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7284 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7285 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7286 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7287 return true; 7288 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7289 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7290 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7291 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7292 return true; 7293 default: 7294 break; 7295 } 7296 if (connection->le_phy_update_all_phys != 0xffu){ 7297 uint8_t all_phys = connection->le_phy_update_all_phys; 7298 connection->le_phy_update_all_phys = 0xff; 7299 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); 7300 return true; 7301 } 7302 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7303 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7304 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7305 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7306 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7307 return true; 7308 } 7309 if (connection->le_past_advertising_handle != 0xff){ 7310 uint8_t advertising_handle = connection->le_past_advertising_handle; 7311 connection->le_past_advertising_handle = 0xff; 7312 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7313 return true; 7314 } 7315 #endif 7316 #endif 7317 } 7318 return false; 7319 } 7320 7321 static void hci_run(void){ 7322 7323 // stack state sub statemachines 7324 switch (hci_stack->state) { 7325 case HCI_STATE_INITIALIZING: 7326 hci_initializing_run(); 7327 break; 7328 case HCI_STATE_HALTING: 7329 hci_halting_run(); 7330 break; 7331 case HCI_STATE_FALLING_ASLEEP: 7332 hci_falling_asleep_run(); 7333 break; 7334 default: 7335 break; 7336 } 7337 7338 // allow to run after initialization to working transition 7339 if (hci_stack->state != HCI_STATE_WORKING){ 7340 return; 7341 } 7342 7343 bool done; 7344 7345 // send continuation fragments first, as they block the prepared packet buffer 7346 done = hci_run_acl_fragments(); 7347 if (done) return; 7348 7349 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7350 done = hci_run_iso_fragments(); 7351 if (done) return; 7352 #endif 7353 7354 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7355 // send host num completed packets next as they don't require num_cmd_packets > 0 7356 if (!hci_can_send_comand_packet_transport()) return; 7357 if (hci_stack->host_completed_packets){ 7358 hci_host_num_completed_packets(); 7359 return; 7360 } 7361 #endif 7362 7363 if (!hci_can_send_command_packet_now()) return; 7364 7365 // global/non-connection oriented commands 7366 7367 7368 #ifdef ENABLE_CLASSIC 7369 // general gap classic 7370 done = hci_run_general_gap_classic(); 7371 if (done) return; 7372 #endif 7373 7374 #ifdef ENABLE_BLE 7375 // general gap le 7376 done = hci_run_general_gap_le(); 7377 if (done) return; 7378 7379 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7380 // ISO related tasks, e.g. BIG create/terminate/sync 7381 done = hci_run_iso_tasks(); 7382 if (done) return; 7383 #endif 7384 #endif 7385 7386 // send pending HCI commands 7387 hci_run_general_pending_commands(); 7388 } 7389 7390 #ifdef ENABLE_CLASSIC 7391 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7392 // bits 6-9 are 'don't use' 7393 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7394 7395 // restrict packet types to local and remote supported 7396 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7397 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7398 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7399 } 7400 #endif 7401 7402 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7403 // house-keeping 7404 7405 #ifdef ENABLE_CLASSIC 7406 bd_addr_t addr; 7407 hci_connection_t * conn; 7408 #endif 7409 #ifdef ENABLE_LE_CENTRAL 7410 uint8_t initiator_filter_policy; 7411 #endif 7412 7413 uint16_t opcode = little_endian_read_16(packet, 0); 7414 switch (opcode) { 7415 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7416 hci_stack->loopback_mode = packet[3]; 7417 break; 7418 7419 #ifdef ENABLE_CLASSIC 7420 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7421 reverse_bd_addr(&packet[3], addr); 7422 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7423 7424 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7425 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7426 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7427 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7428 } 7429 7430 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7431 if (!conn) { 7432 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7433 if (!conn) { 7434 // notify client that alloc failed 7435 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7436 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7437 } 7438 conn->state = SEND_CREATE_CONNECTION; 7439 } 7440 7441 log_info("conn state %u", conn->state); 7442 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7443 switch (conn->state) { 7444 // if connection active exists 7445 case OPEN: 7446 // and OPEN, emit connection complete command 7447 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7448 // packet not sent to controller 7449 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7450 case RECEIVED_DISCONNECTION_COMPLETE: 7451 // create connection triggered in disconnect complete event, let's do it now 7452 break; 7453 case SEND_CREATE_CONNECTION: 7454 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7455 if (hci_classic_operation_active()){ 7456 return ERROR_CODE_SUCCESS; 7457 } 7458 #endif 7459 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7460 break; 7461 default: 7462 // otherwise, just ignore as it is already in the open process 7463 // packet not sent to controller 7464 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7465 } 7466 conn->state = SENT_CREATE_CONNECTION; 7467 7468 // track outgoing connection 7469 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7470 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7471 break; 7472 7473 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7474 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7475 if (conn == NULL) { 7476 // neither SCO nor ACL connection for con handle 7477 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7478 } else { 7479 uint16_t remote_supported_sco_packets; 7480 switch (conn->address_type){ 7481 case BD_ADDR_TYPE_ACL: 7482 // assert SCO connection does not exit 7483 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7484 return ERROR_CODE_COMMAND_DISALLOWED; 7485 } 7486 // cache remote sco packet types 7487 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7488 7489 // allocate connection struct 7490 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7491 HCI_ROLE_MASTER); 7492 if (!conn) { 7493 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7494 } 7495 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7496 break; 7497 case BD_ADDR_TYPE_SCO: 7498 // update of existing SCO connection 7499 break; 7500 default: 7501 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7502 } 7503 } 7504 7505 // conn refers to hci connection of type sco now 7506 7507 conn->state = SENT_CREATE_CONNECTION; 7508 7509 // track outgoing connection to handle command status with error 7510 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7511 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7512 7513 // setup_synchronous_connection? Voice setting at offset 22 7514 // TODO: compare to current setting if sco connection already active 7515 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7516 7517 // derive sco payload length from packet types 7518 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7519 break; 7520 7521 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7522 // get SCO connection 7523 reverse_bd_addr(&packet[3], addr); 7524 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7525 if (conn == NULL){ 7526 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7527 } 7528 7529 conn->state = ACCEPTED_CONNECTION_REQUEST; 7530 7531 // track outgoing connection to handle command status with error 7532 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7533 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7534 7535 // accept_synchronous_connection? Voice setting at offset 18 7536 // TODO: compare to current setting if sco connection already active 7537 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7538 7539 // derive sco payload length from packet types 7540 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7541 break; 7542 #endif 7543 7544 #ifdef ENABLE_BLE 7545 #ifdef ENABLE_LE_CENTRAL 7546 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7547 // white list used? 7548 initiator_filter_policy = packet[7]; 7549 switch (initiator_filter_policy) { 7550 case 0: 7551 // whitelist not used 7552 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7553 break; 7554 case 1: 7555 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7556 break; 7557 default: 7558 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7559 break; 7560 } 7561 // track outgoing connection 7562 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7563 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7564 break; 7565 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7566 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7567 // white list used? 7568 initiator_filter_policy = packet[3]; 7569 switch (initiator_filter_policy) { 7570 case 0: 7571 // whitelist not used 7572 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7573 break; 7574 case 1: 7575 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7576 break; 7577 default: 7578 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7579 break; 7580 } 7581 // track outgoing connection 7582 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7583 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7584 break; 7585 #endif 7586 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7587 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7588 break; 7589 #endif 7590 #endif /* ENABLE_BLE */ 7591 default: 7592 break; 7593 } 7594 7595 hci_stack->num_cmd_packets--; 7596 7597 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7598 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7599 if (err != 0){ 7600 return ERROR_CODE_HARDWARE_FAILURE; 7601 } 7602 return ERROR_CODE_SUCCESS; 7603 } 7604 7605 // disconnect because of security block 7606 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7607 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7608 if (!connection) return; 7609 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7610 } 7611 7612 7613 // Configure Secure Simple Pairing 7614 7615 #ifdef ENABLE_CLASSIC 7616 7617 // enable will enable SSP during init 7618 void gap_ssp_set_enable(int enable){ 7619 hci_stack->ssp_enable = enable; 7620 } 7621 7622 static int hci_local_ssp_activated(void){ 7623 return gap_ssp_supported() && hci_stack->ssp_enable; 7624 } 7625 7626 // if set, BTstack will respond to io capability request using authentication requirement 7627 void gap_ssp_set_io_capability(int io_capability){ 7628 hci_stack->ssp_io_capability = io_capability; 7629 } 7630 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7631 hci_stack->ssp_authentication_requirement = authentication_requirement; 7632 } 7633 7634 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7635 void gap_ssp_set_auto_accept(int auto_accept){ 7636 hci_stack->ssp_auto_accept = auto_accept; 7637 } 7638 7639 void gap_secure_connections_enable(bool enable){ 7640 hci_stack->secure_connections_enable = enable; 7641 } 7642 bool gap_secure_connections_active(void){ 7643 return hci_stack->secure_connections_active; 7644 } 7645 7646 #endif 7647 7648 // va_list part of hci_send_cmd 7649 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7650 if (!hci_can_send_command_packet_now()){ 7651 log_error("hci_send_cmd called but cannot send packet now"); 7652 return ERROR_CODE_COMMAND_DISALLOWED; 7653 } 7654 7655 // for HCI INITIALIZATION 7656 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7657 hci_stack->last_cmd_opcode = cmd->opcode; 7658 7659 hci_reserve_packet_buffer(); 7660 uint8_t * packet = hci_stack->hci_packet_buffer; 7661 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7662 uint8_t status = hci_send_cmd_packet(packet, size); 7663 7664 // release packet buffer on error or for synchronous transport implementations 7665 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7666 hci_release_packet_buffer(); 7667 hci_emit_transport_packet_sent(); 7668 } 7669 7670 return status; 7671 } 7672 7673 /** 7674 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7675 */ 7676 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7677 va_list argptr; 7678 va_start(argptr, cmd); 7679 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7680 va_end(argptr); 7681 return status; 7682 } 7683 7684 // Create various non-HCI events. 7685 // TODO: generalize, use table similar to hci_create_command 7686 7687 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7688 // dump packet 7689 if (dump) { 7690 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7691 } 7692 7693 // dispatch to all event handlers 7694 btstack_linked_list_iterator_t it; 7695 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7696 while (btstack_linked_list_iterator_has_next(&it)){ 7697 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7698 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7699 } 7700 } 7701 7702 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7703 if (!hci_stack->acl_packet_handler) return; 7704 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7705 } 7706 7707 #ifdef ENABLE_CLASSIC 7708 static void hci_notify_if_sco_can_send_now(void){ 7709 // notify SCO sender if waiting 7710 if (!hci_stack->sco_waiting_for_can_send_now) return; 7711 if (hci_can_send_sco_packet_now()){ 7712 hci_stack->sco_waiting_for_can_send_now = 0; 7713 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7714 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7715 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7716 } 7717 } 7718 7719 // parsing end emitting has been merged to reduce code size 7720 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7721 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7722 7723 uint8_t * eir_data; 7724 ad_context_t context; 7725 const uint8_t * name; 7726 uint8_t name_len; 7727 7728 if (size < 3) return; 7729 7730 int event_type = hci_event_packet_get_type(packet); 7731 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7732 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7733 7734 switch (event_type){ 7735 case HCI_EVENT_INQUIRY_RESULT: 7736 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7737 if (size != (3 + (num_responses * 14))) return; 7738 break; 7739 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7740 if (size != 257) return; 7741 if (num_responses != 1) return; 7742 break; 7743 default: 7744 return; 7745 } 7746 7747 // event[1] is set at the end 7748 int i; 7749 for (i=0; i<num_responses;i++){ 7750 memset(event, 0, sizeof(event)); 7751 event[0] = GAP_EVENT_INQUIRY_RESULT; 7752 uint8_t event_size = 27; // if name is not set by EIR 7753 7754 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7755 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7756 (void)memcpy(&event[9], 7757 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7758 3); // class of device 7759 (void)memcpy(&event[12], 7760 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7761 2); // clock offset 7762 7763 switch (event_type){ 7764 case HCI_EVENT_INQUIRY_RESULT: 7765 // 14,15,16,17 = 0, size 18 7766 break; 7767 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7768 event[14] = 1; 7769 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7770 // 16,17 = 0, size 18 7771 break; 7772 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7773 event[14] = 1; 7774 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7775 // EIR packets only contain a single inquiry response 7776 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7777 name = NULL; 7778 // Iterate over EIR data 7779 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7780 uint8_t data_type = ad_iterator_get_data_type(&context); 7781 uint8_t data_size = ad_iterator_get_data_len(&context); 7782 const uint8_t * data = ad_iterator_get_data(&context); 7783 // Prefer Complete Local Name over Shortened Local Name 7784 switch (data_type){ 7785 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7786 if (name) continue; 7787 /* fall through */ 7788 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7789 name = data; 7790 name_len = data_size; 7791 break; 7792 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7793 if (data_size != 8) break; 7794 event[16] = 1; 7795 memcpy(&event[17], data, 8); 7796 break; 7797 default: 7798 break; 7799 } 7800 } 7801 if (name){ 7802 event[25] = 1; 7803 // truncate name if needed 7804 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7805 event[26] = len; 7806 (void)memcpy(&event[27], name, len); 7807 event_size += len; 7808 } 7809 break; 7810 default: 7811 return; 7812 } 7813 event[1] = event_size - 2; 7814 hci_emit_event(event, event_size, 1); 7815 } 7816 } 7817 #endif 7818 7819 void hci_emit_state(void){ 7820 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7821 uint8_t event[3]; 7822 event[0] = BTSTACK_EVENT_STATE; 7823 event[1] = sizeof(event) - 2u; 7824 event[2] = hci_stack->state; 7825 hci_emit_event(event, sizeof(event), 1); 7826 } 7827 7828 #ifdef ENABLE_CLASSIC 7829 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7830 uint8_t event[13]; 7831 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7832 event[1] = sizeof(event) - 2; 7833 event[2] = status; 7834 little_endian_store_16(event, 3, con_handle); 7835 reverse_bd_addr(address, &event[5]); 7836 event[11] = 1; // ACL connection 7837 event[12] = 0; // encryption disabled 7838 hci_emit_event(event, sizeof(event), 1); 7839 } 7840 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7841 if (disable_l2cap_timeouts) return; 7842 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7843 uint8_t event[4]; 7844 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7845 event[1] = sizeof(event) - 2; 7846 little_endian_store_16(event, 2, conn->con_handle); 7847 hci_emit_event(event, sizeof(event), 1); 7848 } 7849 #endif 7850 7851 #ifdef ENABLE_BLE 7852 #ifdef ENABLE_LE_CENTRAL 7853 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){ 7854 uint8_t event[21]; 7855 event[0] = HCI_EVENT_LE_META; 7856 event[1] = sizeof(event) - 2u; 7857 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7858 event[3] = status; 7859 little_endian_store_16(event, 4, con_handle); 7860 event[6] = 0; // TODO: role 7861 event[7] = address_type; 7862 reverse_bd_addr(address, &event[8]); 7863 little_endian_store_16(event, 14, 0); // interval 7864 little_endian_store_16(event, 16, 0); // latency 7865 little_endian_store_16(event, 18, 0); // supervision timeout 7866 event[20] = 0; // master clock accuracy 7867 hci_emit_event(event, sizeof(event), 1); 7868 } 7869 #endif 7870 #endif 7871 7872 static void hci_emit_transport_packet_sent(void){ 7873 // notify upper stack that it might be possible to send again 7874 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7875 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7876 } 7877 7878 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7879 uint8_t event[6]; 7880 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7881 event[1] = sizeof(event) - 2u; 7882 event[2] = 0; // status = OK 7883 little_endian_store_16(event, 3, con_handle); 7884 event[5] = reason; 7885 hci_emit_event(event, sizeof(event), 1); 7886 } 7887 7888 static void hci_emit_nr_connections_changed(void){ 7889 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7890 uint8_t event[3]; 7891 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7892 event[1] = sizeof(event) - 2u; 7893 event[2] = nr_hci_connections(); 7894 hci_emit_event(event, sizeof(event), 1); 7895 } 7896 7897 static void hci_emit_hci_open_failed(void){ 7898 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7899 uint8_t event[2]; 7900 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7901 event[1] = sizeof(event) - 2u; 7902 hci_emit_event(event, sizeof(event), 1); 7903 } 7904 7905 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7906 log_info("hci_emit_dedicated_bonding_result %u ", status); 7907 uint8_t event[9]; 7908 int pos = 0; 7909 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7910 event[pos++] = sizeof(event) - 2u; 7911 event[pos++] = status; 7912 reverse_bd_addr(address, &event[pos]); 7913 hci_emit_event(event, sizeof(event), 1); 7914 } 7915 7916 7917 #ifdef ENABLE_CLASSIC 7918 7919 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7920 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7921 uint8_t event[5]; 7922 int pos = 0; 7923 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7924 event[pos++] = sizeof(event) - 2; 7925 little_endian_store_16(event, 2, con_handle); 7926 pos += 2; 7927 event[pos++] = level; 7928 hci_emit_event(event, sizeof(event), 1); 7929 } 7930 7931 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7932 if (!connection) return LEVEL_0; 7933 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7934 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7935 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7936 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7937 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7938 // LEVEL 4 always requires 128 bit encrytion key size 7939 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7940 security_level = LEVEL_3; 7941 } 7942 return security_level; 7943 } 7944 7945 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7946 uint8_t event[4]; 7947 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7948 event[1] = sizeof(event) - 2; 7949 event[2] = discoverable; 7950 event[3] = connectable; 7951 hci_emit_event(event, sizeof(event), 1); 7952 } 7953 7954 // query if remote side supports eSCO 7955 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7956 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7957 if (!connection) return false; 7958 return (connection->remote_supported_features[0] & 1) != 0; 7959 } 7960 7961 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 7962 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7963 if (!connection) return 0; 7964 return connection->remote_supported_sco_packets; 7965 } 7966 7967 static bool hci_ssp_supported(hci_connection_t * connection){ 7968 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7969 return (connection->bonding_flags & mask) == mask; 7970 } 7971 7972 // query if remote side supports SSP 7973 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7974 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7975 if (!connection) return false; 7976 return hci_ssp_supported(connection) ? 1 : 0; 7977 } 7978 7979 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7980 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7981 } 7982 7983 /** 7984 * Check if remote supported features query has completed 7985 */ 7986 bool hci_remote_features_available(hci_con_handle_t handle){ 7987 hci_connection_t * connection = hci_connection_for_handle(handle); 7988 if (!connection) return false; 7989 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7990 } 7991 7992 /** 7993 * Trigger remote supported features query 7994 */ 7995 7996 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7997 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7998 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7999 } 8000 } 8001 8002 void hci_remote_features_query(hci_con_handle_t con_handle){ 8003 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8004 if (!connection) return; 8005 hci_trigger_remote_features_for_connection(connection); 8006 hci_run(); 8007 } 8008 8009 // GAP API 8010 /** 8011 * @bbrief enable/disable bonding. default is enabled 8012 * @praram enabled 8013 */ 8014 void gap_set_bondable_mode(int enable){ 8015 hci_stack->bondable = enable ? 1 : 0; 8016 } 8017 /** 8018 * @brief Get bondable mode. 8019 * @return 1 if bondable 8020 */ 8021 int gap_get_bondable_mode(void){ 8022 return hci_stack->bondable; 8023 } 8024 8025 /** 8026 * @brief map link keys to security levels 8027 */ 8028 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8029 switch (link_key_type){ 8030 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8031 return LEVEL_4; 8032 case COMBINATION_KEY: 8033 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8034 return LEVEL_3; 8035 default: 8036 return LEVEL_2; 8037 } 8038 } 8039 8040 /** 8041 * @brief map link keys to secure connection yes/no 8042 */ 8043 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8044 switch (link_key_type){ 8045 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8046 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8047 return true; 8048 default: 8049 return false; 8050 } 8051 } 8052 8053 /** 8054 * @brief map link keys to authenticated 8055 */ 8056 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8057 switch (link_key_type){ 8058 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8059 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8060 return true; 8061 default: 8062 return false; 8063 } 8064 } 8065 8066 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8067 log_info("gap_mitm_protection_required_for_security_level %u", level); 8068 return level > LEVEL_2; 8069 } 8070 8071 /** 8072 * @brief get current security level 8073 */ 8074 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8075 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8076 if (!connection) return LEVEL_0; 8077 return gap_security_level_for_connection(connection); 8078 } 8079 8080 /** 8081 * @brief request connection to device to 8082 * @result GAP_AUTHENTICATION_RESULT 8083 */ 8084 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8085 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8086 if (!connection){ 8087 hci_emit_security_level(con_handle, LEVEL_0); 8088 return; 8089 } 8090 8091 btstack_assert(hci_is_le_connection(connection) == false); 8092 8093 // 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) 8094 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8095 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8096 requested_level = LEVEL_4; 8097 } 8098 8099 gap_security_level_t current_level = gap_security_level(con_handle); 8100 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8101 requested_level, connection->requested_security_level, current_level); 8102 8103 // authentication active if authentication request was sent or planned level > 0 8104 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8105 if (authentication_active){ 8106 // authentication already active 8107 if (connection->requested_security_level < requested_level){ 8108 // increase requested level as new level is higher 8109 // TODO: handle re-authentication when done 8110 connection->requested_security_level = requested_level; 8111 } 8112 } else { 8113 // no request active, notify if security sufficient 8114 if (requested_level <= current_level){ 8115 hci_emit_security_level(con_handle, current_level); 8116 return; 8117 } 8118 8119 // store request 8120 connection->requested_security_level = requested_level; 8121 8122 // start to authenticate connection 8123 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8124 8125 // request remote features if not already active, also trigger hci_run 8126 hci_remote_features_query(con_handle); 8127 } 8128 } 8129 8130 /** 8131 * @brief start dedicated bonding with device. disconnect after bonding 8132 * @param device 8133 * @param request MITM protection 8134 * @result GAP_DEDICATED_BONDING_COMPLETE 8135 */ 8136 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8137 8138 // create connection state machine 8139 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8140 8141 if (!connection){ 8142 return BTSTACK_MEMORY_ALLOC_FAILED; 8143 } 8144 8145 // delete link key 8146 gap_drop_link_key_for_bd_addr(device); 8147 8148 // configure LEVEL_2/3, dedicated bonding 8149 connection->state = SEND_CREATE_CONNECTION; 8150 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8151 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8152 connection->bonding_flags = BONDING_DEDICATED; 8153 8154 hci_run(); 8155 8156 return 0; 8157 } 8158 8159 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8160 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8161 if (connection == NULL){ 8162 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8163 } 8164 if (defer){ 8165 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8166 } else { 8167 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8168 // trigger disconnect 8169 hci_run(); 8170 } 8171 return ERROR_CODE_SUCCESS; 8172 } 8173 8174 void gap_set_local_name(const char * local_name){ 8175 hci_stack->local_name = local_name; 8176 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8177 // also update EIR if not set by user 8178 if (hci_stack->eir_data == NULL){ 8179 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8180 } 8181 hci_run(); 8182 } 8183 #endif 8184 8185 8186 #ifdef ENABLE_BLE 8187 8188 #ifdef ENABLE_LE_CENTRAL 8189 void gap_start_scan(void){ 8190 hci_stack->le_scanning_enabled = true; 8191 hci_run(); 8192 } 8193 8194 void gap_stop_scan(void){ 8195 hci_stack->le_scanning_enabled = false; 8196 hci_run(); 8197 } 8198 8199 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8200 hci_stack->le_scan_type = scan_type; 8201 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8202 hci_stack->le_scan_interval = scan_interval; 8203 hci_stack->le_scan_window = scan_window; 8204 hci_stack->le_scanning_param_update = true; 8205 hci_run(); 8206 } 8207 8208 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8209 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8210 } 8211 8212 void gap_set_scan_duplicate_filter(bool enabled){ 8213 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8214 } 8215 8216 void gap_set_scan_phys(uint8_t phys){ 8217 // LE Coded and LE 1M PHY 8218 hci_stack->le_scan_phys = phys & 0x05; 8219 } 8220 8221 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8222 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8223 if (!conn){ 8224 // disallow if le connection is already outgoing 8225 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8226 log_error("le connection already active"); 8227 return ERROR_CODE_COMMAND_DISALLOWED; 8228 } 8229 8230 log_info("gap_connect: no connection exists yet, creating context"); 8231 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8232 if (!conn){ 8233 // notify client that alloc failed 8234 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8235 log_info("gap_connect: failed to alloc hci_connection_t"); 8236 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8237 } 8238 8239 // set le connecting state 8240 if (hci_is_le_connection_type(addr_type)){ 8241 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8242 } 8243 8244 conn->state = SEND_CREATE_CONNECTION; 8245 log_info("gap_connect: send create connection next"); 8246 hci_run(); 8247 return ERROR_CODE_SUCCESS; 8248 } 8249 8250 if (!hci_is_le_connection(conn) || 8251 (conn->state == SEND_CREATE_CONNECTION) || 8252 (conn->state == SENT_CREATE_CONNECTION)) { 8253 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8254 log_error("gap_connect: classic connection or connect is already being created"); 8255 return GATT_CLIENT_IN_WRONG_STATE; 8256 } 8257 8258 // check if connection was just disconnected 8259 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8260 log_info("gap_connect: send create connection (again)"); 8261 conn->state = SEND_CREATE_CONNECTION; 8262 hci_run(); 8263 return ERROR_CODE_SUCCESS; 8264 } 8265 8266 log_info("gap_connect: context exists with state %u", conn->state); 8267 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8268 hci_run(); 8269 return ERROR_CODE_SUCCESS; 8270 } 8271 8272 // @assumption: only a single outgoing LE Connection exists 8273 static hci_connection_t * gap_get_outgoing_connection(void){ 8274 btstack_linked_item_t *it; 8275 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8276 hci_connection_t * conn = (hci_connection_t *) it; 8277 if (!hci_is_le_connection(conn)) continue; 8278 switch (conn->state){ 8279 case SEND_CREATE_CONNECTION: 8280 case SENT_CREATE_CONNECTION: 8281 return conn; 8282 default: 8283 break; 8284 }; 8285 } 8286 return NULL; 8287 } 8288 8289 uint8_t gap_connect_cancel(void){ 8290 hci_connection_t * conn; 8291 switch (hci_stack->le_connecting_request){ 8292 case LE_CONNECTING_IDLE: 8293 break; 8294 case LE_CONNECTING_WHITELIST: 8295 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8296 hci_run(); 8297 break; 8298 case LE_CONNECTING_DIRECT: 8299 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8300 conn = gap_get_outgoing_connection(); 8301 if (conn == NULL){ 8302 hci_run(); 8303 } else { 8304 switch (conn->state){ 8305 case SEND_CREATE_CONNECTION: 8306 // skip sending create connection and emit event instead 8307 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8308 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8309 btstack_memory_hci_connection_free( conn ); 8310 break; 8311 case SENT_CREATE_CONNECTION: 8312 // let hci_run_general_gap_le cancel outgoing connection 8313 hci_run(); 8314 break; 8315 default: 8316 break; 8317 } 8318 } 8319 break; 8320 default: 8321 btstack_unreachable(); 8322 break; 8323 } 8324 return ERROR_CODE_SUCCESS; 8325 } 8326 8327 /** 8328 * @brief Set connection parameters for outgoing connections 8329 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8330 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8331 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8332 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8333 * @param conn_latency, default: 4 8334 * @param supervision_timeout (unit: 10ms), default: 720 ms 8335 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8336 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8337 */ 8338 8339 void gap_set_connection_phys(uint8_t phys){ 8340 // LE Coded, LE 1M, LE 2M PHY 8341 hci_stack->le_connection_phys = phys & 7; 8342 } 8343 8344 #endif 8345 8346 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8347 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8348 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8349 hci_stack->le_connection_scan_interval = conn_scan_interval; 8350 hci_stack->le_connection_scan_window = conn_scan_window; 8351 hci_stack->le_connection_interval_min = conn_interval_min; 8352 hci_stack->le_connection_interval_max = conn_interval_max; 8353 hci_stack->le_connection_latency = conn_latency; 8354 hci_stack->le_supervision_timeout = supervision_timeout; 8355 hci_stack->le_minimum_ce_length = min_ce_length; 8356 hci_stack->le_maximum_ce_length = max_ce_length; 8357 } 8358 8359 /** 8360 * @brief Updates the connection parameters for a given LE connection 8361 * @param handle 8362 * @param conn_interval_min (unit: 1.25ms) 8363 * @param conn_interval_max (unit: 1.25ms) 8364 * @param conn_latency 8365 * @param supervision_timeout (unit: 10ms) 8366 * @return 0 if ok 8367 */ 8368 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8369 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8370 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8371 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8372 connection->le_conn_interval_min = conn_interval_min; 8373 connection->le_conn_interval_max = conn_interval_max; 8374 connection->le_conn_latency = conn_latency; 8375 connection->le_supervision_timeout = supervision_timeout; 8376 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8377 hci_run(); 8378 return 0; 8379 } 8380 8381 /** 8382 * @brief Request an update of the connection parameter for a given LE connection 8383 * @param handle 8384 * @param conn_interval_min (unit: 1.25ms) 8385 * @param conn_interval_max (unit: 1.25ms) 8386 * @param conn_latency 8387 * @param supervision_timeout (unit: 10ms) 8388 * @return 0 if ok 8389 */ 8390 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8391 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8392 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8393 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8394 connection->le_conn_interval_min = conn_interval_min; 8395 connection->le_conn_interval_max = conn_interval_max; 8396 connection->le_conn_latency = conn_latency; 8397 connection->le_supervision_timeout = supervision_timeout; 8398 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8399 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8400 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8401 return 0; 8402 } 8403 8404 #ifdef ENABLE_LE_PERIPHERAL 8405 8406 /** 8407 * @brief Set Advertisement Data 8408 * @param advertising_data_length 8409 * @param advertising_data (max 31 octets) 8410 * @note data is not copied, pointer has to stay valid 8411 */ 8412 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8413 hci_stack->le_advertisements_data_len = advertising_data_length; 8414 hci_stack->le_advertisements_data = advertising_data; 8415 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8416 hci_run(); 8417 } 8418 8419 /** 8420 * @brief Set Scan Response Data 8421 * @param advertising_data_length 8422 * @param advertising_data (max 31 octets) 8423 * @note data is not copied, pointer has to stay valid 8424 */ 8425 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8426 hci_stack->le_scan_response_data_len = scan_response_data_length; 8427 hci_stack->le_scan_response_data = scan_response_data; 8428 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8429 hci_run(); 8430 } 8431 8432 /** 8433 * @brief Set Advertisement Parameters 8434 * @param adv_int_min 8435 * @param adv_int_max 8436 * @param adv_type 8437 * @param direct_address_type 8438 * @param direct_address 8439 * @param channel_map 8440 * @param filter_policy 8441 * 8442 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8443 */ 8444 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8445 uint8_t direct_address_typ, bd_addr_t direct_address, 8446 uint8_t channel_map, uint8_t filter_policy) { 8447 8448 hci_stack->le_advertisements_interval_min = adv_int_min; 8449 hci_stack->le_advertisements_interval_max = adv_int_max; 8450 hci_stack->le_advertisements_type = adv_type; 8451 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8452 hci_stack->le_advertisements_channel_map = channel_map; 8453 hci_stack->le_advertisements_filter_policy = filter_policy; 8454 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8455 6); 8456 8457 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8458 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8459 hci_run(); 8460 } 8461 8462 /** 8463 * @brief Enable/Disable Advertisements 8464 * @param enabled 8465 */ 8466 void gap_advertisements_enable(int enabled){ 8467 if (enabled == 0){ 8468 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8469 } else { 8470 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8471 } 8472 hci_update_advertisements_enabled_for_current_roles(); 8473 hci_run(); 8474 } 8475 8476 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8477 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8478 btstack_linked_list_iterator_t it; 8479 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8480 while (btstack_linked_list_iterator_has_next(&it)){ 8481 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8482 if ( item->advertising_handle == advertising_handle ) { 8483 return item; 8484 } 8485 } 8486 return NULL; 8487 } 8488 8489 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8490 hci_stack->le_resolvable_private_address_update_s = update_s; 8491 hci_run(); 8492 return ERROR_CODE_SUCCESS; 8493 } 8494 8495 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8496 // find free advertisement handle 8497 uint8_t advertisement_handle; 8498 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8499 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8500 } 8501 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8502 // clear 8503 memset(storage, 0, sizeof(le_advertising_set_t)); 8504 // copy params 8505 storage->advertising_handle = advertisement_handle; 8506 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8507 // add to list 8508 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8509 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8510 *out_advertising_handle = advertisement_handle; 8511 // set tasks and start 8512 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8513 hci_run(); 8514 return ERROR_CODE_SUCCESS; 8515 } 8516 8517 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8518 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8519 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8520 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8521 // set tasks and start 8522 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8523 hci_run(); 8524 return ERROR_CODE_SUCCESS; 8525 } 8526 8527 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8528 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8529 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8530 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8531 return ERROR_CODE_SUCCESS; 8532 } 8533 8534 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8535 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8536 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8537 memcpy(advertising_set->random_address, random_address, 6); 8538 // set tasks and start 8539 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8540 hci_run(); 8541 return ERROR_CODE_SUCCESS; 8542 } 8543 8544 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8545 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8546 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8547 advertising_set->adv_data = advertising_data; 8548 advertising_set->adv_data_len = advertising_data_length; 8549 // set tasks and start 8550 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8551 hci_run(); 8552 return ERROR_CODE_SUCCESS; 8553 } 8554 8555 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){ 8556 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8557 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8558 advertising_set->scan_data = scan_response_data; 8559 advertising_set->scan_data_len = scan_response_data_length; 8560 // set tasks and start 8561 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8562 hci_run(); 8563 return ERROR_CODE_SUCCESS; 8564 } 8565 8566 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8567 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8568 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8569 advertising_set->enable_timeout = timeout; 8570 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8571 // set tasks and start 8572 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8573 hci_run(); 8574 return ERROR_CODE_SUCCESS; 8575 } 8576 8577 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8578 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8579 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8580 // set tasks and start 8581 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8582 hci_run(); 8583 return ERROR_CODE_SUCCESS; 8584 } 8585 8586 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8587 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8588 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8589 // set tasks and start 8590 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8591 hci_run(); 8592 return ERROR_CODE_SUCCESS; 8593 } 8594 8595 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8596 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8597 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8598 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8599 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8600 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8601 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8602 // set tasks and start 8603 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8604 hci_run(); 8605 return ERROR_CODE_SUCCESS; 8606 } 8607 8608 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8609 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8610 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8611 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8612 return ERROR_CODE_SUCCESS; 8613 } 8614 8615 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8616 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8617 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8618 advertising_set->periodic_data = periodic_data; 8619 advertising_set->periodic_data_len = periodic_data_length; 8620 // set tasks and start 8621 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8622 hci_run(); 8623 return ERROR_CODE_SUCCESS; 8624 } 8625 8626 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8627 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8628 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8629 // set tasks and start 8630 advertising_set->periodic_include_adi = include_adi; 8631 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8632 hci_run(); 8633 return ERROR_CODE_SUCCESS; 8634 } 8635 8636 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8637 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8638 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8639 // set tasks and start 8640 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8641 hci_run(); 8642 return ERROR_CODE_SUCCESS; 8643 } 8644 8645 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8646 hci_stack->le_past_mode = mode; 8647 hci_stack->le_past_skip = skip; 8648 hci_stack->le_past_sync_timeout = sync_timeout; 8649 hci_stack->le_past_cte_type = cte_type; 8650 hci_stack->le_past_set_default_params = true; 8651 hci_run(); 8652 return ERROR_CODE_SUCCESS; 8653 } 8654 8655 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8656 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8657 if (hci_connection == NULL){ 8658 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8659 } 8660 hci_connection->le_past_sync_handle = sync_handle; 8661 hci_connection->le_past_service_data = service_data; 8662 hci_run(); 8663 return ERROR_CODE_SUCCESS; 8664 } 8665 8666 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8667 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8668 if (hci_connection == NULL){ 8669 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8670 } 8671 hci_connection->le_past_advertising_handle = advertising_handle; 8672 hci_connection->le_past_service_data = service_data; 8673 hci_run(); 8674 return ERROR_CODE_SUCCESS; 8675 } 8676 8677 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8678 8679 #endif 8680 8681 #endif 8682 8683 void hci_le_set_own_address_type(uint8_t own_address_type){ 8684 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8685 if (own_address_type == hci_stack->le_own_addr_type) return; 8686 hci_stack->le_own_addr_type = own_address_type; 8687 8688 #ifdef ENABLE_LE_PERIPHERAL 8689 // update advertisement parameters, too 8690 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8691 hci_run(); 8692 #endif 8693 #ifdef ENABLE_LE_CENTRAL 8694 // note: we don't update scan parameters or modify ongoing connection attempts 8695 #endif 8696 } 8697 8698 void hci_le_random_address_set(const bd_addr_t random_address){ 8699 memcpy(hci_stack->le_random_address, random_address, 6); 8700 hci_stack->le_random_address_set = true; 8701 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8702 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8703 if (hci_extended_advertising_supported()){ 8704 // force advertising set creation for LE Set Advertising Set Random Address 8705 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8706 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8707 } 8708 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8709 } 8710 #endif 8711 hci_run(); 8712 } 8713 8714 #endif 8715 8716 uint8_t gap_disconnect(hci_con_handle_t handle){ 8717 hci_connection_t * conn = hci_connection_for_handle(handle); 8718 if (!conn){ 8719 hci_emit_disconnection_complete(handle, 0); 8720 return 0; 8721 } 8722 // ignore if already disconnected 8723 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8724 return 0; 8725 } 8726 conn->state = SEND_DISCONNECT; 8727 hci_run(); 8728 return 0; 8729 } 8730 8731 int gap_read_rssi(hci_con_handle_t con_handle){ 8732 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8733 if (hci_connection == NULL) return 0; 8734 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8735 hci_run(); 8736 return 1; 8737 } 8738 8739 /** 8740 * @brief Get connection type 8741 * @param con_handle 8742 * @result connection_type 8743 */ 8744 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8745 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8746 if (!conn) return GAP_CONNECTION_INVALID; 8747 switch (conn->address_type){ 8748 case BD_ADDR_TYPE_LE_PUBLIC: 8749 case BD_ADDR_TYPE_LE_RANDOM: 8750 return GAP_CONNECTION_LE; 8751 case BD_ADDR_TYPE_SCO: 8752 return GAP_CONNECTION_SCO; 8753 case BD_ADDR_TYPE_ACL: 8754 return GAP_CONNECTION_ACL; 8755 default: 8756 return GAP_CONNECTION_INVALID; 8757 } 8758 } 8759 8760 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8761 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8762 if (!conn) return HCI_ROLE_INVALID; 8763 return (hci_role_t) conn->role; 8764 } 8765 8766 8767 #ifdef ENABLE_CLASSIC 8768 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8769 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8770 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8771 conn->request_role = role; 8772 hci_run(); 8773 return ERROR_CODE_SUCCESS; 8774 } 8775 #endif 8776 8777 #ifdef ENABLE_BLE 8778 8779 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){ 8780 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8781 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8782 8783 conn->le_phy_update_all_phys = all_phys; 8784 conn->le_phy_update_tx_phys = tx_phys; 8785 conn->le_phy_update_rx_phys = rx_phys; 8786 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8787 8788 hci_run(); 8789 8790 return 0; 8791 } 8792 8793 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8794 // check if already in list 8795 btstack_linked_list_iterator_t it; 8796 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8797 while (btstack_linked_list_iterator_has_next(&it)) { 8798 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8799 if (entry->address_type != address_type) { 8800 continue; 8801 } 8802 if (memcmp(entry->address, address, 6) != 0) { 8803 continue; 8804 } 8805 8806 // if already on controller: 8807 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8808 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8809 // drop remove request 8810 entry->state = LE_WHITELIST_ON_CONTROLLER; 8811 return ERROR_CODE_SUCCESS; 8812 } else { 8813 // disallow as already on controller 8814 return ERROR_CODE_COMMAND_DISALLOWED; 8815 } 8816 } 8817 8818 // assume scheduled to add 8819 return ERROR_CODE_COMMAND_DISALLOWED; 8820 } 8821 8822 // alloc and add to list 8823 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8824 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8825 entry->address_type = address_type; 8826 (void)memcpy(entry->address, address, 6); 8827 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8828 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8829 return ERROR_CODE_SUCCESS; 8830 } 8831 8832 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8833 btstack_linked_list_iterator_t it; 8834 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8835 while (btstack_linked_list_iterator_has_next(&it)){ 8836 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8837 if (entry->address_type != address_type) { 8838 continue; 8839 } 8840 if (memcmp(entry->address, address, 6) != 0) { 8841 continue; 8842 } 8843 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8844 // remove from controller if already present 8845 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8846 } else { 8847 // directly remove entry from whitelist 8848 btstack_linked_list_iterator_remove(&it); 8849 btstack_memory_whitelist_entry_free(entry); 8850 } 8851 return ERROR_CODE_SUCCESS; 8852 } 8853 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8854 } 8855 8856 static void hci_whitelist_clear(void){ 8857 btstack_linked_list_iterator_t it; 8858 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8859 while (btstack_linked_list_iterator_has_next(&it)){ 8860 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8861 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8862 // remove from controller if already present 8863 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8864 continue; 8865 } 8866 // directly remove entry from whitelist 8867 btstack_linked_list_iterator_remove(&it); 8868 btstack_memory_whitelist_entry_free(entry); 8869 } 8870 } 8871 8872 /** 8873 * @brief Clear Whitelist 8874 * @return 0 if ok 8875 */ 8876 uint8_t gap_whitelist_clear(void){ 8877 hci_whitelist_clear(); 8878 hci_run(); 8879 return ERROR_CODE_SUCCESS; 8880 } 8881 8882 /** 8883 * @brief Add Device to Whitelist 8884 * @param address_typ 8885 * @param address 8886 * @return 0 if ok 8887 */ 8888 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8889 uint8_t status = hci_whitelist_add(address_type, address); 8890 if (status){ 8891 return status; 8892 } 8893 hci_run(); 8894 return ERROR_CODE_SUCCESS; 8895 } 8896 8897 /** 8898 * @brief Remove Device from Whitelist 8899 * @param address_typ 8900 * @param address 8901 * @return 0 if ok 8902 */ 8903 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8904 uint8_t status = hci_whitelist_remove(address_type, address); 8905 if (status){ 8906 return status; 8907 } 8908 hci_run(); 8909 return ERROR_CODE_SUCCESS; 8910 } 8911 8912 #ifdef ENABLE_LE_CENTRAL 8913 /** 8914 * @brief Connect with Whitelist 8915 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8916 * @return - if ok 8917 */ 8918 uint8_t gap_connect_with_whitelist(void){ 8919 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8920 return ERROR_CODE_COMMAND_DISALLOWED; 8921 } 8922 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8923 hci_run(); 8924 return ERROR_CODE_SUCCESS; 8925 } 8926 8927 /** 8928 * @brief Auto Connection Establishment - Start Connecting to device 8929 * @param address_typ 8930 * @param address 8931 * @return 0 if ok 8932 */ 8933 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8934 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8935 return ERROR_CODE_COMMAND_DISALLOWED; 8936 } 8937 8938 uint8_t status = hci_whitelist_add(address_type, address); 8939 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8940 return status; 8941 } 8942 8943 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8944 8945 hci_run(); 8946 return ERROR_CODE_SUCCESS; 8947 } 8948 8949 /** 8950 * @brief Auto Connection Establishment - Stop Connecting to device 8951 * @param address_typ 8952 * @param address 8953 * @return 0 if ok 8954 */ 8955 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8956 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8957 return ERROR_CODE_COMMAND_DISALLOWED; 8958 } 8959 8960 hci_whitelist_remove(address_type, address); 8961 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8962 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8963 } 8964 hci_run(); 8965 return 0; 8966 } 8967 8968 /** 8969 * @brief Auto Connection Establishment - Stop everything 8970 * @note Convenience function to stop all active auto connection attempts 8971 */ 8972 uint8_t gap_auto_connection_stop_all(void){ 8973 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8974 return ERROR_CODE_COMMAND_DISALLOWED; 8975 } 8976 hci_whitelist_clear(); 8977 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8978 hci_run(); 8979 return ERROR_CODE_SUCCESS; 8980 } 8981 8982 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8983 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8984 if (!conn) return 0; 8985 return conn->le_connection_interval; 8986 } 8987 #endif 8988 #endif 8989 8990 #ifdef ENABLE_CLASSIC 8991 /** 8992 * @brief Set Extended Inquiry Response data 8993 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8994 * @note has to be done before stack starts up 8995 */ 8996 void gap_set_extended_inquiry_response(const uint8_t * data){ 8997 hci_stack->eir_data = data; 8998 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8999 hci_run(); 9000 } 9001 9002 /** 9003 * @brief Start GAP Classic Inquiry 9004 * @param duration in 1.28s units 9005 * @return 0 if ok 9006 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9007 */ 9008 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9009 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9010 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9011 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9012 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9013 } 9014 hci_stack->inquiry_state = duration_in_1280ms_units; 9015 hci_stack->inquiry_max_period_length = 0; 9016 hci_stack->inquiry_min_period_length = 0; 9017 hci_run(); 9018 return 0; 9019 } 9020 9021 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9022 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9023 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9024 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9025 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9026 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9027 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9028 9029 hci_stack->inquiry_state = duration; 9030 hci_stack->inquiry_max_period_length = max_period_length; 9031 hci_stack->inquiry_min_period_length = min_period_length; 9032 hci_run(); 9033 return 0; 9034 } 9035 9036 /** 9037 * @brief Stop GAP Classic Inquiry 9038 * @return 0 if ok 9039 */ 9040 int gap_inquiry_stop(void){ 9041 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9042 // emit inquiry complete event, before it even started 9043 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9044 hci_emit_event(event, sizeof(event), 1); 9045 return 0; 9046 } 9047 switch (hci_stack->inquiry_state){ 9048 case GAP_INQUIRY_STATE_ACTIVE: 9049 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9050 hci_run(); 9051 return ERROR_CODE_SUCCESS; 9052 case GAP_INQUIRY_STATE_PERIODIC: 9053 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9054 hci_run(); 9055 return ERROR_CODE_SUCCESS; 9056 default: 9057 return ERROR_CODE_COMMAND_DISALLOWED; 9058 } 9059 } 9060 9061 void gap_inquiry_set_lap(uint32_t lap){ 9062 hci_stack->inquiry_lap = lap; 9063 } 9064 9065 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9066 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9067 hci_stack->inquiry_scan_window = inquiry_scan_window; 9068 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9069 hci_run(); 9070 } 9071 9072 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9073 { 9074 hci_stack->inquiry_tx_power_level = tx_power; 9075 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9076 hci_run(); 9077 } 9078 9079 9080 /** 9081 * @brief Remote Name Request 9082 * @param addr 9083 * @param page_scan_repetition_mode 9084 * @param clock_offset only used when bit 15 is set 9085 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9086 */ 9087 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9088 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9089 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9090 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9091 hci_stack->remote_name_clock_offset = clock_offset; 9092 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9093 hci_run(); 9094 return 0; 9095 } 9096 9097 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9098 hci_stack->gap_pairing_state = state; 9099 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9100 hci_run(); 9101 return 0; 9102 } 9103 9104 /** 9105 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9106 * @param addr 9107 * @param pin_data 9108 * @param pin_len 9109 * @return 0 if ok 9110 */ 9111 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9112 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9113 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9114 hci_stack->gap_pairing_pin_len = pin_len; 9115 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9116 } 9117 9118 /** 9119 * @brief Legacy Pairing Pin Code Response 9120 * @param addr 9121 * @param pin 9122 * @return 0 if ok 9123 */ 9124 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9125 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9126 } 9127 9128 /** 9129 * @brief Abort Legacy Pairing 9130 * @param addr 9131 * @param pin 9132 * @return 0 if ok 9133 */ 9134 int gap_pin_code_negative(bd_addr_t addr){ 9135 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9136 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9137 } 9138 9139 /** 9140 * @brief SSP Passkey Response 9141 * @param addr 9142 * @param passkey 9143 * @return 0 if ok 9144 */ 9145 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9146 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9147 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9148 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9149 } 9150 9151 /** 9152 * @brief Abort SSP Passkey Entry/Pairing 9153 * @param addr 9154 * @param pin 9155 * @return 0 if ok 9156 */ 9157 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9158 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9159 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9160 } 9161 9162 /** 9163 * @brief Accept SSP Numeric Comparison 9164 * @param addr 9165 * @param passkey 9166 * @return 0 if ok 9167 */ 9168 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9169 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9170 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9171 } 9172 9173 /** 9174 * @brief Abort SSP Numeric Comparison/Pairing 9175 * @param addr 9176 * @param pin 9177 * @return 0 if ok 9178 */ 9179 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9180 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9181 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9182 } 9183 9184 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9185 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9186 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9187 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9188 connectionSetAuthenticationFlags(conn, flag); 9189 hci_run(); 9190 return ERROR_CODE_SUCCESS; 9191 } 9192 #endif 9193 9194 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9195 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9196 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9197 } 9198 9199 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9200 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9201 } 9202 #endif 9203 9204 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9205 /** 9206 * @brief Report Remote OOB Data 9207 * @param bd_addr 9208 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9209 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9210 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9211 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9212 */ 9213 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){ 9214 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9215 if (connection == NULL) { 9216 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9217 } 9218 connection->classic_oob_c_192 = c_192; 9219 connection->classic_oob_r_192 = r_192; 9220 9221 // ignore P-256 if not supported by us 9222 if (hci_stack->secure_connections_active){ 9223 connection->classic_oob_c_256 = c_256; 9224 connection->classic_oob_r_256 = r_256; 9225 } 9226 9227 return ERROR_CODE_SUCCESS; 9228 } 9229 /** 9230 * @brief Generate new OOB data 9231 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9232 */ 9233 void gap_ssp_generate_oob_data(void){ 9234 hci_stack->classic_read_local_oob_data = true; 9235 hci_run(); 9236 } 9237 9238 #endif 9239 9240 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9241 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9242 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9243 if (connection == NULL) { 9244 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9245 } 9246 9247 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9248 connection->link_key_type = type; 9249 9250 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9251 } 9252 9253 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9254 /** 9255 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9256 * @param inquiry_mode see bluetooth_defines.h 9257 */ 9258 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9259 hci_stack->inquiry_mode = inquiry_mode; 9260 } 9261 9262 /** 9263 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9264 */ 9265 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9266 hci_stack->sco_voice_setting = voice_setting; 9267 } 9268 9269 /** 9270 * @brief Get SCO Voice Setting 9271 * @return current voice setting 9272 */ 9273 uint16_t hci_get_sco_voice_setting(void){ 9274 return hci_stack->sco_voice_setting; 9275 } 9276 9277 static int hci_have_usb_transport(void){ 9278 if (!hci_stack->hci_transport) return 0; 9279 const char * transport_name = hci_stack->hci_transport->name; 9280 if (!transport_name) return 0; 9281 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9282 } 9283 9284 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9285 uint16_t sco_packet_length = 0; 9286 9287 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9288 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9289 int multiplier; 9290 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9291 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9292 multiplier = 2; 9293 } else { 9294 multiplier = 1; 9295 } 9296 #endif 9297 9298 #ifdef ENABLE_SCO_OVER_HCI 9299 if (hci_have_usb_transport()){ 9300 // see Core Spec for H2 USB Transfer. 9301 // 3 byte SCO header + 24 bytes per connection 9302 // @note multiple sco connections not supported currently 9303 sco_packet_length = 3 + 24 * multiplier; 9304 } else { 9305 // 3 byte SCO header + SCO packet length over the air 9306 sco_packet_length = 3 + payload_size * multiplier; 9307 // assert that it still fits inside an SCO buffer 9308 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9309 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9310 } 9311 } 9312 #endif 9313 #ifdef HAVE_SCO_TRANSPORT 9314 // 3 byte SCO header + SCO packet length over the air 9315 sco_packet_length = 3 + payload_size * multiplier; 9316 // assert that it still fits inside an SCO buffer 9317 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9318 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9319 } 9320 #endif 9321 return sco_packet_length; 9322 } 9323 9324 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9325 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9326 if (connection != NULL){ 9327 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9328 } 9329 return 0; 9330 } 9331 9332 uint16_t hci_get_sco_packet_length(void){ 9333 btstack_linked_list_iterator_t it; 9334 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9335 while (btstack_linked_list_iterator_has_next(&it)){ 9336 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9337 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9338 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9339 } 9340 } 9341 return 0; 9342 } 9343 9344 /** 9345 * @brief Sets the master/slave policy 9346 * @param policy (0: attempt to become master, 1: let connecting device decide) 9347 */ 9348 void hci_set_master_slave_policy(uint8_t policy){ 9349 hci_stack->master_slave_policy = policy; 9350 } 9351 9352 #endif 9353 9354 HCI_STATE hci_get_state(void){ 9355 return hci_stack->state; 9356 } 9357 9358 #ifdef ENABLE_CLASSIC 9359 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9360 hci_stack->gap_classic_accept_callback = accept_callback; 9361 } 9362 #endif 9363 9364 /** 9365 * @brief Set callback for Bluetooth Hardware Error 9366 */ 9367 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9368 hci_stack->hardware_error_callback = fn; 9369 } 9370 9371 void hci_disconnect_all(void){ 9372 btstack_linked_list_iterator_t it; 9373 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9374 while (btstack_linked_list_iterator_has_next(&it)){ 9375 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9376 if (con->state == SENT_DISCONNECT) continue; 9377 con->state = SEND_DISCONNECT; 9378 } 9379 hci_run(); 9380 } 9381 9382 uint16_t hci_get_manufacturer(void){ 9383 return hci_stack->manufacturer; 9384 } 9385 9386 #ifdef ENABLE_BLE 9387 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9388 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9389 if (!hci_con) return NULL; 9390 return &hci_con->sm_connection; 9391 } 9392 9393 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9394 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9395 #endif 9396 9397 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9398 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9399 if (hci_connection == NULL) return 0; 9400 if (hci_is_le_connection(hci_connection)){ 9401 #ifdef ENABLE_BLE 9402 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9403 if (sm_conn->sm_connection_encrypted) { 9404 return sm_conn->sm_actual_encryption_key_size; 9405 } 9406 #endif 9407 } else { 9408 #ifdef ENABLE_CLASSIC 9409 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9410 return hci_connection->encryption_key_size; 9411 } 9412 #endif 9413 } 9414 return 0; 9415 } 9416 9417 bool gap_authenticated(hci_con_handle_t con_handle){ 9418 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9419 if (hci_connection == NULL) return false; 9420 9421 switch (hci_connection->address_type){ 9422 #ifdef ENABLE_BLE 9423 case BD_ADDR_TYPE_LE_PUBLIC: 9424 case BD_ADDR_TYPE_LE_RANDOM: 9425 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9426 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9427 #endif 9428 #ifdef ENABLE_CLASSIC 9429 case BD_ADDR_TYPE_SCO: 9430 case BD_ADDR_TYPE_ACL: 9431 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9432 #endif 9433 default: 9434 return false; 9435 } 9436 } 9437 9438 bool gap_secure_connection(hci_con_handle_t con_handle){ 9439 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9440 if (hci_connection == NULL) return 0; 9441 9442 switch (hci_connection->address_type){ 9443 #ifdef ENABLE_BLE 9444 case BD_ADDR_TYPE_LE_PUBLIC: 9445 case BD_ADDR_TYPE_LE_RANDOM: 9446 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9447 return hci_connection->sm_connection.sm_connection_sc != 0; 9448 #endif 9449 #ifdef ENABLE_CLASSIC 9450 case BD_ADDR_TYPE_SCO: 9451 case BD_ADDR_TYPE_ACL: 9452 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9453 #endif 9454 default: 9455 return false; 9456 } 9457 } 9458 9459 bool gap_bonded(hci_con_handle_t con_handle){ 9460 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9461 if (hci_connection == NULL) return 0; 9462 9463 #ifdef ENABLE_CLASSIC 9464 link_key_t link_key; 9465 link_key_type_t link_key_type; 9466 #endif 9467 switch (hci_connection->address_type){ 9468 #ifdef ENABLE_BLE 9469 case BD_ADDR_TYPE_LE_PUBLIC: 9470 case BD_ADDR_TYPE_LE_RANDOM: 9471 return hci_connection->sm_connection.sm_le_db_index >= 0; 9472 #endif 9473 #ifdef ENABLE_CLASSIC 9474 case BD_ADDR_TYPE_SCO: 9475 case BD_ADDR_TYPE_ACL: 9476 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9477 #endif 9478 default: 9479 return false; 9480 } 9481 } 9482 9483 #ifdef ENABLE_BLE 9484 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9485 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9486 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9487 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9488 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9489 return sm_conn->sm_connection_authorization_state; 9490 } 9491 #endif 9492 9493 #ifdef ENABLE_CLASSIC 9494 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){ 9495 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9496 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9497 conn->sniff_min_interval = sniff_min_interval; 9498 conn->sniff_max_interval = sniff_max_interval; 9499 conn->sniff_attempt = sniff_attempt; 9500 conn->sniff_timeout = sniff_timeout; 9501 hci_run(); 9502 return 0; 9503 } 9504 9505 /** 9506 * @brief Exit Sniff mode 9507 * @param con_handle 9508 @ @return 0 if ok 9509 */ 9510 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9511 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9512 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9513 conn->sniff_min_interval = 0xffff; 9514 hci_run(); 9515 return 0; 9516 } 9517 9518 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){ 9519 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9520 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9521 conn->sniff_subrating_max_latency = max_latency; 9522 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9523 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9524 hci_run(); 9525 return ERROR_CODE_SUCCESS; 9526 } 9527 9528 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){ 9529 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9530 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9531 conn->qos_service_type = service_type; 9532 conn->qos_token_rate = token_rate; 9533 conn->qos_peak_bandwidth = peak_bandwidth; 9534 conn->qos_latency = latency; 9535 conn->qos_delay_variation = delay_variation; 9536 hci_run(); 9537 return ERROR_CODE_SUCCESS; 9538 } 9539 9540 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9541 hci_stack->new_page_scan_interval = page_scan_interval; 9542 hci_stack->new_page_scan_window = page_scan_window; 9543 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9544 hci_run(); 9545 } 9546 9547 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9548 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9549 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9550 hci_run(); 9551 } 9552 9553 void gap_set_page_timeout(uint16_t page_timeout){ 9554 hci_stack->page_timeout = page_timeout; 9555 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9556 hci_run(); 9557 } 9558 9559 #endif 9560 9561 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9562 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9563 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9564 if (le_device_db_index >= le_device_db_max_count()) return; 9565 uint8_t offset = le_device_db_index >> 3; 9566 uint8_t mask = 1 << (le_device_db_index & 7); 9567 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9568 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9569 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9570 // note: go back to remove entries, otherwise, a remove + add will skip the add 9571 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9572 } 9573 } 9574 9575 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9576 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9577 if (le_device_db_index >= le_device_db_max_count()) return; 9578 uint8_t offset = le_device_db_index >> 3; 9579 uint8_t mask = 1 << (le_device_db_index & 7); 9580 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9581 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9582 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9583 } 9584 } 9585 9586 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9587 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9588 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9589 } 9590 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9591 // restart le resolving list update 9592 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9593 } 9594 return ERROR_CODE_SUCCESS; 9595 } 9596 9597 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9598 hci_stack->le_privacy_mode = privacy_mode; 9599 } 9600 #endif 9601 9602 #ifdef ENABLE_BLE 9603 #ifdef ENABLE_LE_CENTRAL 9604 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9605 9606 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9607 // check if already in list 9608 btstack_linked_list_iterator_t it; 9609 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9610 while (btstack_linked_list_iterator_has_next(&it)) { 9611 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9612 if (entry->sid != advertising_sid) { 9613 continue; 9614 } 9615 if (entry->address_type != address_type) { 9616 continue; 9617 } 9618 if (memcmp(entry->address, address, 6) != 0) { 9619 continue; 9620 } 9621 // disallow if already scheduled to add 9622 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9623 return ERROR_CODE_COMMAND_DISALLOWED; 9624 } 9625 // still on controller, but scheduled to remove -> re-add 9626 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9627 return ERROR_CODE_SUCCESS; 9628 } 9629 // alloc and add to list 9630 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9631 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9632 entry->sid = advertising_sid; 9633 entry->address_type = address_type; 9634 (void)memcpy(entry->address, address, 6); 9635 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9636 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9637 return ERROR_CODE_SUCCESS; 9638 } 9639 9640 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9641 btstack_linked_list_iterator_t it; 9642 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9643 while (btstack_linked_list_iterator_has_next(&it)){ 9644 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9645 if (entry->sid != advertising_sid) { 9646 continue; 9647 } 9648 if (entry->address_type != address_type) { 9649 continue; 9650 } 9651 if (memcmp(entry->address, address, 6) != 0) { 9652 continue; 9653 } 9654 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9655 // remove from controller if already present 9656 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9657 } else { 9658 // directly remove entry from whitelist 9659 btstack_linked_list_iterator_remove(&it); 9660 btstack_memory_periodic_advertiser_list_entry_free(entry); 9661 } 9662 return ERROR_CODE_SUCCESS; 9663 } 9664 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9665 } 9666 9667 static void hci_periodic_advertiser_list_clear(void){ 9668 btstack_linked_list_iterator_t it; 9669 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9670 while (btstack_linked_list_iterator_has_next(&it)){ 9671 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9672 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9673 // remove from controller if already present 9674 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9675 continue; 9676 } 9677 // directly remove entry from whitelist 9678 btstack_linked_list_iterator_remove(&it); 9679 btstack_memory_periodic_advertiser_list_entry_free(entry); 9680 } 9681 } 9682 9683 uint8_t gap_periodic_advertiser_list_clear(void){ 9684 hci_periodic_advertiser_list_clear(); 9685 hci_run(); 9686 return ERROR_CODE_SUCCESS; 9687 } 9688 9689 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9690 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9691 if (status){ 9692 return status; 9693 } 9694 hci_run(); 9695 return ERROR_CODE_SUCCESS; 9696 } 9697 9698 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9699 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9700 if (status){ 9701 return status; 9702 } 9703 hci_run(); 9704 return ERROR_CODE_SUCCESS; 9705 } 9706 9707 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9708 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9709 // abort if already active 9710 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9711 return ERROR_CODE_COMMAND_DISALLOWED; 9712 } 9713 // store request 9714 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9715 hci_stack->le_periodic_sync_options = options; 9716 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9717 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9718 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9719 hci_stack->le_periodic_sync_skip = skip; 9720 hci_stack->le_periodic_sync_timeout = sync_timeout; 9721 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9722 9723 hci_run(); 9724 return ERROR_CODE_SUCCESS; 9725 } 9726 9727 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9728 // abort if not requested 9729 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9730 return ERROR_CODE_COMMAND_DISALLOWED; 9731 } 9732 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9733 hci_run(); 9734 return ERROR_CODE_SUCCESS; 9735 } 9736 9737 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9738 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9739 return ERROR_CODE_COMMAND_DISALLOWED; 9740 } 9741 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9742 hci_run(); 9743 return ERROR_CODE_SUCCESS; 9744 } 9745 9746 #endif 9747 #endif 9748 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9749 static hci_iso_stream_t * 9750 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9751 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9752 if (iso_stream != NULL){ 9753 iso_stream->iso_type = iso_type; 9754 iso_stream->state = state; 9755 iso_stream->group_id = group_id; 9756 iso_stream->stream_id = stream_id; 9757 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9758 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9759 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9760 } 9761 return iso_stream; 9762 } 9763 9764 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9765 btstack_linked_list_iterator_t it; 9766 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9767 while (btstack_linked_list_iterator_has_next(&it)){ 9768 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9769 if (iso_stream->cis_handle == con_handle ) { 9770 return iso_stream; 9771 } 9772 } 9773 return NULL; 9774 } 9775 9776 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9777 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9778 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9779 btstack_memory_hci_iso_stream_free(iso_stream); 9780 } 9781 9782 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9783 btstack_linked_list_iterator_t it; 9784 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9785 while (btstack_linked_list_iterator_has_next(&it)){ 9786 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9787 if ((iso_stream->group_id == group_id) && 9788 (iso_stream->iso_type == iso_type)){ 9789 btstack_linked_list_iterator_remove(&it); 9790 btstack_memory_hci_iso_stream_free(iso_stream); 9791 } 9792 } 9793 } 9794 9795 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9796 btstack_linked_list_iterator_t it; 9797 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9798 while (btstack_linked_list_iterator_has_next(&it)){ 9799 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9800 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9801 (iso_stream->group_id == group_id)){ 9802 btstack_linked_list_iterator_remove(&it); 9803 btstack_memory_hci_iso_stream_free(iso_stream); 9804 } 9805 } 9806 } 9807 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9808 btstack_linked_list_iterator_t it; 9809 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9810 while (btstack_linked_list_iterator_has_next(&it)){ 9811 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9812 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9813 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9814 } 9815 } 9816 } 9817 9818 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9819 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9820 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9821 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9822 return (sdu_len_offset + 2 + sdu_len) == size; 9823 } 9824 9825 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9826 if (hci_stack->iso_packet_handler == NULL) { 9827 return; 9828 } 9829 if (size < 4) { 9830 return; 9831 } 9832 9833 // parse header 9834 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9835 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9836 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9837 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9838 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9839 9840 // assert packet is complete 9841 if ((iso_data_len + 4u) != size){ 9842 return; 9843 } 9844 9845 if ((pb_flag & 0x01) == 0){ 9846 if (pb_flag == 0x02){ 9847 // The ISO_Data_Load field contains a header and a complete SDU. 9848 if (hci_iso_sdu_complete(packet, size)) { 9849 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9850 } 9851 } else { 9852 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9853 if (iso_stream == NULL){ 9854 return; 9855 } 9856 if (size > HCI_ISO_PAYLOAD_SIZE){ 9857 return; 9858 } 9859 memcpy(iso_stream->reassembly_buffer, packet, size); 9860 // fix pb_flag 9861 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9862 iso_stream->reassembly_pos = size; 9863 } 9864 } else { 9865 // iso_data_load contains continuation or last fragment of an SDU 9866 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9867 if (ts_flag != 0){ 9868 return; 9869 } 9870 // append fragment 9871 if (iso_stream == NULL){ 9872 return; 9873 } 9874 if (iso_stream->reassembly_pos == 0){ 9875 return; 9876 } 9877 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9878 // reset reassembly buffer 9879 iso_stream->reassembly_pos = 0; 9880 return; 9881 } 9882 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9883 iso_stream->reassembly_pos += iso_data_len; 9884 9885 // deliver if last fragment and SDU complete 9886 if (pb_flag == 0x03){ 9887 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9888 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9889 } 9890 iso_stream->reassembly_pos = 0; 9891 } 9892 } 9893 } 9894 9895 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9896 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9897 uint16_t pos = 0; 9898 event[pos++] = HCI_EVENT_META_GAP; 9899 event[pos++] = 4 + (2 * big->num_bis); 9900 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9901 event[pos++] = status; 9902 event[pos++] = big->big_handle; 9903 event[pos++] = big->num_bis; 9904 uint8_t i; 9905 for (i=0;i<big->num_bis;i++){ 9906 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9907 pos += 2; 9908 } 9909 hci_emit_event(event, pos, 0); 9910 } 9911 9912 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9913 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9914 uint16_t pos = 0; 9915 event[pos++] = HCI_EVENT_META_GAP; 9916 event[pos++] = 4 + (2 * cig->num_cis); 9917 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9918 event[pos++] = status; 9919 event[pos++] = cig->cig_id; 9920 event[pos++] = cig->num_cis; 9921 uint8_t i; 9922 for (i=0;i<cig->num_cis;i++){ 9923 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9924 pos += 2; 9925 } 9926 hci_emit_event(event, pos, 0); 9927 } 9928 9929 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9930 hci_con_handle_t acl_con_handle) { 9931 uint8_t event [10]; 9932 uint16_t pos = 0; 9933 event[pos++] = HCI_EVENT_META_GAP; 9934 event[pos++] = 8; 9935 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9936 event[pos++] = status; 9937 event[pos++] = cig_id; 9938 event[pos++] = cis_id; 9939 little_endian_store_16(event, pos, cis_con_handle); 9940 pos += 2; 9941 little_endian_store_16(event, pos, acl_con_handle); 9942 pos += 2; 9943 hci_emit_event(event, pos, 0); 9944 } 9945 9946 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9947 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9948 // cache data before finalizing struct 9949 uint8_t cig_id = iso_stream->group_id; 9950 uint8_t cis_id = iso_stream->stream_id; 9951 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9952 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9953 if (status != ERROR_CODE_SUCCESS){ 9954 hci_iso_stream_finalize(iso_stream); 9955 } 9956 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9957 } 9958 9959 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9960 uint8_t event [4]; 9961 uint16_t pos = 0; 9962 event[pos++] = HCI_EVENT_META_GAP; 9963 event[pos++] = 2; 9964 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9965 event[pos++] = big->big_handle; 9966 hci_emit_event(event, pos, 0); 9967 } 9968 9969 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9970 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9971 uint16_t pos = 0; 9972 event[pos++] = HCI_EVENT_META_GAP; 9973 event[pos++] = 4; 9974 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9975 event[pos++] = status; 9976 event[pos++] = big_sync->big_handle; 9977 event[pos++] = big_sync->num_bis; 9978 uint8_t i; 9979 for (i=0;i<big_sync->num_bis;i++){ 9980 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9981 pos += 2; 9982 } 9983 hci_emit_event(event, pos, 0); 9984 } 9985 9986 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9987 uint8_t event [4]; 9988 uint16_t pos = 0; 9989 event[pos++] = HCI_EVENT_META_GAP; 9990 event[pos++] = 2; 9991 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9992 event[pos++] = big_handle; 9993 hci_emit_event(event, pos, 0); 9994 } 9995 9996 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9997 uint8_t event[6]; 9998 uint16_t pos = 0; 9999 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10000 event[pos++] = sizeof(event) - 2; 10001 event[pos++] = big->big_handle; 10002 event[pos++] = bis_index; 10003 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10004 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10005 } 10006 10007 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10008 uint8_t event[4]; 10009 uint16_t pos = 0; 10010 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10011 event[pos++] = sizeof(event) - 2; 10012 little_endian_store_16(event, pos, cis_con_handle); 10013 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10014 } 10015 10016 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10017 btstack_linked_list_iterator_t it; 10018 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10019 while (btstack_linked_list_iterator_has_next(&it)){ 10020 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10021 if ( big->big_handle == big_handle ) { 10022 return big; 10023 } 10024 } 10025 return NULL; 10026 } 10027 10028 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10029 btstack_linked_list_iterator_t it; 10030 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10031 while (btstack_linked_list_iterator_has_next(&it)){ 10032 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10033 if ( big_sync->big_handle == big_handle ) { 10034 return big_sync; 10035 } 10036 } 10037 return NULL; 10038 } 10039 10040 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10041 hci_stack->iso_packets_to_queue = num_packets; 10042 } 10043 10044 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10045 btstack_linked_list_iterator_t it; 10046 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10047 while (btstack_linked_list_iterator_has_next(&it)){ 10048 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10049 if ( cig->cig_id == cig_id ) { 10050 return cig; 10051 } 10052 } 10053 return NULL; 10054 } 10055 10056 static void hci_iso_notify_can_send_now(void){ 10057 10058 // BIG 10059 10060 btstack_linked_list_iterator_t it; 10061 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10062 while (btstack_linked_list_iterator_has_next(&it)){ 10063 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10064 // track number completed packet timestamps 10065 if (big->num_completed_timestamp_current_valid){ 10066 big->num_completed_timestamp_current_valid = false; 10067 if (big->num_completed_timestamp_previous_valid){ 10068 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10069 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10070 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10071 big->num_completed_timestamp_previous_ms); 10072 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10073 // to catch up, skip packet on all BIS 10074 uint8_t i; 10075 for (i=0;i<big->num_bis;i++){ 10076 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10077 if (iso_stream){ 10078 iso_stream->num_packets_to_skip++; 10079 } 10080 } 10081 } 10082 } 10083 big->num_completed_timestamp_previous_valid = true; 10084 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10085 } 10086 10087 if (big->can_send_now_requested){ 10088 // check if no outgoing iso packets pending and no can send now have to be emitted 10089 uint8_t i; 10090 bool can_send = true; 10091 uint8_t num_iso_queued_minimum = 0; 10092 for (i=0;i<big->num_bis;i++){ 10093 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10094 if (iso_stream == NULL) continue; 10095 // handle case where individual ISO packet was sent too late: 10096 // for each additionally queued packet, a new one needs to get skipped 10097 if (i==0){ 10098 num_iso_queued_minimum = iso_stream->num_packets_sent; 10099 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10100 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10101 iso_stream->num_packets_to_skip += num_packets_to_skip; 10102 iso_stream->num_packets_sent -= num_packets_to_skip; 10103 } 10104 // check if we can send now 10105 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10106 can_send = false; 10107 break; 10108 } 10109 } 10110 if (can_send){ 10111 // propagate can send now to individual streams 10112 big->can_send_now_requested = false; 10113 for (i=0;i<big->num_bis;i++){ 10114 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10115 iso_stream->emit_ready_to_send = true; 10116 } 10117 } 10118 } 10119 } 10120 10121 if (hci_stack->hci_packet_buffer_reserved) return; 10122 10123 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10124 while (btstack_linked_list_iterator_has_next(&it)){ 10125 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10126 // report bis ready 10127 uint8_t i; 10128 for (i=0;i<big->num_bis;i++){ 10129 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10130 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10131 iso_stream->emit_ready_to_send = false; 10132 hci_emit_bis_can_send_now(big, i); 10133 break; 10134 } 10135 } 10136 } 10137 10138 // CIS 10139 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10140 while (btstack_linked_list_iterator_has_next(&it)) { 10141 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10142 if ((iso_stream->can_send_now_requested) && 10143 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10144 iso_stream->can_send_now_requested = false; 10145 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10146 } 10147 } 10148 } 10149 10150 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10151 if (hci_big_for_handle(big_params->big_handle) != NULL){ 10152 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10153 } 10154 if (big_params->num_bis == 0){ 10155 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10156 } 10157 if (big_params->num_bis > MAX_NR_BIS){ 10158 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10159 } 10160 10161 // reserve ISO Streams 10162 uint8_t i; 10163 uint8_t status = ERROR_CODE_SUCCESS; 10164 for (i=0;i<big_params->num_bis;i++){ 10165 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 10166 if (iso_stream == NULL) { 10167 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10168 break; 10169 } 10170 } 10171 10172 // free structs on error 10173 if (status != ERROR_CODE_SUCCESS){ 10174 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 10175 return status; 10176 } 10177 10178 le_audio_big_t * big = storage; 10179 big->big_handle = big_params->big_handle; 10180 big->params = big_params; 10181 big->state = LE_AUDIO_BIG_STATE_CREATE; 10182 big->num_bis = big_params->num_bis; 10183 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10184 10185 hci_run(); 10186 10187 return ERROR_CODE_SUCCESS; 10188 } 10189 10190 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10191 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 10192 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10193 } 10194 if (big_sync_params->num_bis == 0){ 10195 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10196 } 10197 if (big_sync_params->num_bis > MAX_NR_BIS){ 10198 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10199 } 10200 10201 le_audio_big_sync_t * big_sync = storage; 10202 big_sync->big_handle = big_sync_params->big_handle; 10203 big_sync->params = big_sync_params; 10204 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10205 big_sync->num_bis = big_sync_params->num_bis; 10206 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10207 10208 hci_run(); 10209 10210 return ERROR_CODE_SUCCESS; 10211 } 10212 10213 uint8_t gap_big_terminate(uint8_t big_handle){ 10214 le_audio_big_t * big = hci_big_for_handle(big_handle); 10215 if (big == NULL){ 10216 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10217 } 10218 switch (big->state){ 10219 case LE_AUDIO_BIG_STATE_CREATE: 10220 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10221 hci_emit_big_terminated(big); 10222 break; 10223 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10224 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10225 break; 10226 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10227 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10228 case LE_AUDIO_BIG_STATE_ACTIVE: 10229 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10230 hci_run(); 10231 break; 10232 default: 10233 return ERROR_CODE_COMMAND_DISALLOWED; 10234 } 10235 return ERROR_CODE_SUCCESS; 10236 } 10237 10238 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10239 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10240 if (big_sync == NULL){ 10241 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10242 } 10243 switch (big_sync->state){ 10244 case LE_AUDIO_BIG_STATE_CREATE: 10245 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10246 hci_emit_big_sync_stopped(big_handle); 10247 break; 10248 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10249 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10250 break; 10251 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10252 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10253 case LE_AUDIO_BIG_STATE_ACTIVE: 10254 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10255 hci_run(); 10256 break; 10257 default: 10258 return ERROR_CODE_COMMAND_DISALLOWED; 10259 } 10260 return ERROR_CODE_SUCCESS; 10261 } 10262 10263 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10264 le_audio_big_t * big = hci_big_for_handle(big_handle); 10265 if (big == NULL){ 10266 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10267 } 10268 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10269 return ERROR_CODE_COMMAND_DISALLOWED; 10270 } 10271 big->can_send_now_requested = true; 10272 hci_iso_notify_can_send_now(); 10273 return ERROR_CODE_SUCCESS; 10274 } 10275 10276 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10277 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10278 if (iso_stream == NULL){ 10279 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10280 } 10281 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10282 return ERROR_CODE_COMMAND_DISALLOWED; 10283 } 10284 iso_stream->can_send_now_requested = true; 10285 hci_iso_notify_can_send_now(); 10286 return ERROR_CODE_SUCCESS; 10287 } 10288 10289 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10290 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10291 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10292 } 10293 if (cig_params->num_cis == 0){ 10294 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10295 } 10296 if (cig_params->num_cis > MAX_NR_BIS){ 10297 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10298 } 10299 10300 // reserve ISO Streams 10301 uint8_t i; 10302 uint8_t status = ERROR_CODE_SUCCESS; 10303 for (i=0;i<cig_params->num_cis;i++){ 10304 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10305 if (iso_stream == NULL) { 10306 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10307 break; 10308 } 10309 } 10310 10311 // free structs on error 10312 if (status != ERROR_CODE_SUCCESS){ 10313 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10314 return status; 10315 } 10316 10317 le_audio_cig_t * cig = storage; 10318 cig->cig_id = cig_params->cig_id; 10319 cig->num_cis = cig_params->num_cis; 10320 cig->params = cig_params; 10321 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10322 for (i=0;i<cig->num_cis;i++){ 10323 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10324 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10325 cig->cis_setup_active[i] = false; 10326 cig->cis_established[i] = false; 10327 } 10328 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10329 10330 hci_run(); 10331 10332 return ERROR_CODE_SUCCESS; 10333 } 10334 10335 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10336 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10337 if (cig == NULL){ 10338 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10339 } 10340 10341 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10342 return ERROR_CODE_COMMAND_DISALLOWED; 10343 } 10344 10345 // store ACL Connection Handles 10346 uint8_t i; 10347 for (i=0;i<cig->num_cis;i++){ 10348 // check that all con handles exist and store 10349 hci_con_handle_t cis_handle = cis_con_handles[i]; 10350 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10351 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10352 } 10353 uint8_t j; 10354 bool found = false; 10355 for (j=0;j<cig->num_cis;j++){ 10356 if (cig->cis_con_handles[j] == cis_handle){ 10357 cig->acl_con_handles[j] = acl_con_handles[j]; 10358 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10359 btstack_assert(iso_stream != NULL); 10360 iso_stream->acl_handle = acl_con_handles[j]; 10361 found = true; 10362 break; 10363 } 10364 } 10365 if (!found){ 10366 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10367 } 10368 } 10369 10370 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10371 hci_run(); 10372 10373 return ERROR_CODE_SUCCESS; 10374 } 10375 10376 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10377 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10378 if (iso_stream == NULL){ 10379 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10380 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10381 } 10382 10383 // set next state and continue 10384 iso_stream->state = state; 10385 hci_run(); 10386 return ERROR_CODE_SUCCESS; 10387 } 10388 10389 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10390 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10391 } 10392 10393 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10394 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10395 } 10396 10397 10398 #endif 10399 #endif /* ENABLE_BLE */ 10400 10401 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10402 void hci_setup_test_connections_fuzz(void){ 10403 hci_connection_t * conn; 10404 10405 // default address: 66:55:44:33:00:01 10406 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10407 10408 // setup Controller info 10409 hci_stack->num_cmd_packets = 255; 10410 hci_stack->acl_packets_total_num = 255; 10411 10412 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10413 addr[5] = 0x01; 10414 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10415 conn->con_handle = addr[5]; 10416 conn->state = RECEIVED_CONNECTION_REQUEST; 10417 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10418 10419 // setup incoming Classic SCO connection with con handle 0x0002 10420 addr[5] = 0x02; 10421 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10422 conn->con_handle = addr[5]; 10423 conn->state = RECEIVED_CONNECTION_REQUEST; 10424 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10425 10426 // setup ready Classic ACL connection with con handle 0x0003 10427 addr[5] = 0x03; 10428 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10429 conn->con_handle = addr[5]; 10430 conn->state = OPEN; 10431 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10432 10433 // setup ready Classic SCO connection with con handle 0x0004 10434 addr[5] = 0x04; 10435 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10436 conn->con_handle = addr[5]; 10437 conn->state = OPEN; 10438 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10439 10440 // setup ready LE ACL connection with con handle 0x005 and public address 10441 addr[5] = 0x05; 10442 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10443 conn->con_handle = addr[5]; 10444 conn->state = OPEN; 10445 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10446 conn->sm_connection.sm_connection_encrypted = 1; 10447 } 10448 10449 void hci_free_connections_fuzz(void){ 10450 btstack_linked_list_iterator_t it; 10451 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10452 while (btstack_linked_list_iterator_has_next(&it)){ 10453 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10454 btstack_linked_list_iterator_remove(&it); 10455 btstack_memory_hci_connection_free(con); 10456 } 10457 } 10458 void hci_simulate_working_fuzz(void){ 10459 hci_stack->le_scanning_param_update = false; 10460 hci_init_done(); 10461 hci_stack->num_cmd_packets = 255; 10462 } 10463 #endif 10464