1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static bool hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 247 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 248 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 249 static void hci_iso_notify_can_send_now(void); 250 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 251 static void hci_emit_big_terminated(const le_audio_big_t * big); 252 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 253 static void hci_emit_big_sync_stopped(uint8_t big_handle); 254 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 255 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 258 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 259 #endif /* ENABLE_BLE */ 260 261 // the STACK is here 262 #ifndef HAVE_MALLOC 263 static hci_stack_t hci_stack_static; 264 #endif 265 static hci_stack_t * hci_stack = NULL; 266 267 #ifdef ENABLE_CLASSIC 268 // default name 269 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 270 271 // test helper 272 static uint8_t disable_l2cap_timeouts = 0; 273 #endif 274 275 // reset connection state on create and on reconnect 276 // don't overwrite addr, con handle, role 277 static void hci_connection_init(hci_connection_t * conn){ 278 conn->authentication_flags = AUTH_FLAG_NONE; 279 conn->bonding_flags = 0; 280 conn->requested_security_level = LEVEL_0; 281 #ifdef ENABLE_CLASSIC 282 conn->request_role = HCI_ROLE_INVALID; 283 conn->sniff_subrating_max_latency = 0xffff; 284 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 285 conn->link_key_type = INVALID_LINK_KEY; 286 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 287 btstack_run_loop_set_timer_context(&conn->timeout, conn); 288 hci_connection_timestamp(conn); 289 #endif 290 conn->acl_recombination_length = 0; 291 conn->acl_recombination_pos = 0; 292 conn->num_packets_sent = 0; 293 294 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 295 #ifdef ENABLE_BLE 296 conn->le_phy_update_all_phys = 0xff; 297 #endif 298 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 299 conn->le_max_tx_octets = 27; 300 #endif 301 #ifdef ENABLE_CLASSIC_PAIRING_OOB 302 conn->classic_oob_c_192 = NULL; 303 conn->classic_oob_r_192 = NULL; 304 conn->classic_oob_c_256 = NULL; 305 conn->classic_oob_r_256 = NULL; 306 #endif 307 } 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 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 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2183 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2184 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2185 log_info("BCM: Config PCM Data format"); 2186 // msb first, fill bits 0, left justified 2187 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2188 break; 2189 } 2190 #ifdef HAVE_BCM_PCM2 2191 case HCI_INIT_BCM_PCM2_SETUP: 2192 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2193 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2194 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2195 uint32_t pcm_clock_freq; 2196 uint8_t ch_0_period; 2197 #ifdef ENABLE_BCM_PCM_WBS 2198 // 512 kHz, resample 8 kHz to 16 khz 2199 pcm_clock_freq = 512000; 2200 ch_0_period = 1; 2201 #else 2202 // 256 khz, 8 khz output 2203 pcm_clock_freq = 256000; 2204 ch_0_period = 0; 2205 #endif 2206 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2207 hci_send_cmd(&hci_bcm_pcm2_setup, 2208 0x00, // Action = Write 2209 0x00, // Test_Options = None 2210 op_mode, // Op_Mode 2211 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2212 pcm_clock_freq, // PCM_Clock_Freq 2213 0x01, // Sync_Signal_Width 2214 0x0F, // Slot_Width 2215 0x01, // NumberOfSlots 2216 0x00, // Bank_0_Fill_Mode = 0s 2217 0x00, // Bank_0_Number_of_Fill_Bits 2218 0x00, // Bank_0_Programmable_Fill_Data 2219 0x00, // Bank_1_Fill_Mode = 0s 2220 0x00, // Bank_1_Number_of_Fill_Bits 2221 0x00, // Bank_1_Programmable_Fill_Data 2222 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2223 0x00, // Ch_0_Slot_Number 2224 0x01, // Ch_1_Slot_Number 2225 0x02, // Ch_2_Slot_Number 2226 0x03, // Ch_3_Slot_Number 2227 0x04, // Ch_4_Slot_Number 2228 ch_0_period, // Ch_0_Period 2229 0x00, // Ch_1_Period 2230 0x00 // Ch_2_Period 2231 ); 2232 break; 2233 } 2234 #endif 2235 #endif /* ENABLE_SCO_OVER_PCM */ 2236 #endif /* ENABLE_CLASSIC */ 2237 2238 #ifdef ENABLE_BLE 2239 /* fall through */ 2240 2241 // LE INIT 2242 case HCI_INIT_LE_READ_BUFFER_SIZE: 2243 if (hci_le_supported()){ 2244 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2245 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2246 hci_send_cmd(&hci_le_read_buffer_size_v2); 2247 } else { 2248 hci_send_cmd(&hci_le_read_buffer_size); 2249 } 2250 break; 2251 } 2252 2253 /* fall through */ 2254 2255 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2256 // skip write le host if not supported (e.g. on LE only EM9301) 2257 if (hci_le_supported() 2258 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2259 // LE Supported Host = 1, Simultaneous Host = 0 2260 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2261 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2262 break; 2263 } 2264 2265 /* fall through */ 2266 2267 case HCI_INIT_LE_SET_EVENT_MASK: 2268 if (hci_le_supported()){ 2269 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2270 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2271 break; 2272 } 2273 #endif 2274 2275 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2276 /* fall through */ 2277 2278 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2279 if (hci_le_supported() 2280 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2281 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2282 hci_send_cmd(&hci_le_read_maximum_data_length); 2283 break; 2284 } 2285 2286 /* fall through */ 2287 2288 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2289 if (hci_le_supported() 2290 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2291 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2292 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2293 break; 2294 } 2295 #endif 2296 2297 #ifdef ENABLE_LE_CENTRAL 2298 /* fall through */ 2299 2300 case HCI_INIT_READ_WHITE_LIST_SIZE: 2301 if (hci_le_supported()){ 2302 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2303 hci_send_cmd(&hci_le_read_white_list_size); 2304 break; 2305 } 2306 2307 #endif 2308 2309 #ifdef ENABLE_LE_PERIPHERAL 2310 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2311 /* fall through */ 2312 2313 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2314 if (hci_extended_advertising_supported()){ 2315 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2316 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2317 break; 2318 } 2319 #endif 2320 #endif 2321 /* fall through */ 2322 2323 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2324 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2325 if (hci_le_supported()) { 2326 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2327 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2328 break; 2329 } 2330 #endif 2331 2332 /* fall through */ 2333 2334 case HCI_INIT_DONE: 2335 hci_stack->substate = HCI_INIT_DONE; 2336 // main init sequence complete 2337 #ifdef ENABLE_CLASSIC 2338 // check if initial Classic GAP Tasks are completed 2339 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2340 hci_run_gap_tasks_classic(); 2341 break; 2342 } 2343 #endif 2344 #ifdef ENABLE_BLE 2345 #ifdef ENABLE_LE_CENTRAL 2346 // check if initial LE GAP Tasks are completed 2347 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2348 hci_run_general_gap_le(); 2349 break; 2350 } 2351 #endif 2352 #endif 2353 hci_init_done(); 2354 break; 2355 2356 default: 2357 return; 2358 } 2359 } 2360 2361 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2362 bool command_completed = false; 2363 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2364 uint16_t opcode = little_endian_read_16(packet,3); 2365 if (opcode == hci_stack->last_cmd_opcode){ 2366 command_completed = true; 2367 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2368 } else { 2369 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2370 } 2371 } 2372 2373 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2374 uint8_t status = packet[2]; 2375 uint16_t opcode = little_endian_read_16(packet,4); 2376 if (opcode == hci_stack->last_cmd_opcode){ 2377 if (status){ 2378 command_completed = true; 2379 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2380 } else { 2381 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2382 } 2383 } else { 2384 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2385 } 2386 } 2387 #ifndef HAVE_HOST_CONTROLLER_API 2388 // Vendor == CSR 2389 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2390 // TODO: track actual command 2391 command_completed = true; 2392 } 2393 2394 // Vendor == Toshiba 2395 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2396 // TODO: track actual command 2397 command_completed = true; 2398 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2399 hci_stack->num_cmd_packets = 1; 2400 } 2401 #endif 2402 2403 return command_completed; 2404 } 2405 2406 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2407 2408 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2409 2410 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2411 2412 #ifndef HAVE_HOST_CONTROLLER_API 2413 2414 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2415 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2416 // 2417 // HCI Reset 2418 // Timeout 100 ms 2419 // HCI Reset 2420 // Command Complete Reset 2421 // HCI Read Local Version Information 2422 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2423 // hang... 2424 // 2425 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2426 if (!command_completed 2427 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2428 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2429 2430 uint16_t opcode = little_endian_read_16(packet,3); 2431 if (opcode == hci_reset.opcode){ 2432 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2433 return; 2434 } 2435 } 2436 2437 // CSR & H5 2438 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2439 if (!command_completed 2440 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2441 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2442 2443 uint16_t opcode = little_endian_read_16(packet,3); 2444 if (opcode == hci_reset.opcode){ 2445 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2446 return; 2447 } 2448 } 2449 2450 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2451 // fix: Correct substate and behave as command below 2452 if (command_completed){ 2453 switch (hci_stack->substate){ 2454 case HCI_INIT_SEND_RESET: 2455 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2456 break; 2457 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2458 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2459 break; 2460 default: 2461 break; 2462 } 2463 } 2464 2465 #endif 2466 2467 if (!command_completed) return; 2468 2469 bool need_baud_change = false; 2470 bool need_addr_change = false; 2471 2472 #ifndef HAVE_HOST_CONTROLLER_API 2473 need_baud_change = hci_stack->config 2474 && hci_stack->chipset 2475 && hci_stack->chipset->set_baudrate_command 2476 && hci_stack->hci_transport->set_baudrate 2477 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2478 2479 need_addr_change = hci_stack->custom_bd_addr_set 2480 && hci_stack->chipset 2481 && hci_stack->chipset->set_bd_addr_command; 2482 #endif 2483 2484 switch(hci_stack->substate){ 2485 2486 #ifndef HAVE_HOST_CONTROLLER_API 2487 case HCI_INIT_SEND_RESET: 2488 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2489 // fix: just correct substate and behave as command below 2490 2491 /* fall through */ 2492 #endif 2493 2494 case HCI_INIT_W4_SEND_RESET: 2495 btstack_run_loop_remove_timer(&hci_stack->timeout); 2496 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2497 return; 2498 2499 #ifndef HAVE_HOST_CONTROLLER_API 2500 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2501 // for STLC2500D, baud rate change already happened. 2502 // for others, baud rate gets changed now 2503 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2504 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2505 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2506 hci_stack->hci_transport->set_baudrate(baud_rate); 2507 } 2508 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2509 return; 2510 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2511 btstack_run_loop_remove_timer(&hci_stack->timeout); 2512 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2513 return; 2514 case HCI_INIT_W4_CUSTOM_INIT: 2515 // repeat custom init 2516 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2517 return; 2518 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2519 // repeat custom init 2520 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2521 return; 2522 #endif 2523 2524 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2525 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2526 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2527 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2528 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2529 return; 2530 } 2531 if (need_addr_change){ 2532 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2533 return; 2534 } 2535 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2536 return; 2537 #ifndef HAVE_HOST_CONTROLLER_API 2538 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2539 if (need_baud_change){ 2540 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2541 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2542 hci_stack->hci_transport->set_baudrate(baud_rate); 2543 } 2544 if (need_addr_change){ 2545 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2546 return; 2547 } 2548 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2549 return; 2550 case HCI_INIT_W4_SET_BD_ADDR: 2551 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2552 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2553 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2554 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2555 return; 2556 } 2557 // skipping st warm boot 2558 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2559 return; 2560 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2561 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2562 return; 2563 #endif 2564 2565 case HCI_INIT_DONE: 2566 // set state if we came here by fall through 2567 hci_stack->substate = HCI_INIT_DONE; 2568 return; 2569 2570 default: 2571 break; 2572 } 2573 hci_initializing_next_state(); 2574 } 2575 2576 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2577 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2578 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2579 // check if we have been aware of the HCI connection 2580 switch (conn->state){ 2581 case SENT_CREATE_CONNECTION: 2582 case RECEIVED_CONNECTION_REQUEST: 2583 case ACCEPTED_CONNECTION_REQUEST: 2584 break; 2585 default: 2586 return; 2587 } 2588 2589 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2590 bd_addr_t bd_address; 2591 (void)memcpy(&bd_address, conn->address, 6); 2592 2593 #ifdef ENABLE_CLASSIC 2594 // cache needed data 2595 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2596 #endif 2597 2598 // connection failed, remove entry 2599 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2600 btstack_memory_hci_connection_free( conn ); 2601 2602 #ifdef ENABLE_CLASSIC 2603 // notify client if dedicated bonding 2604 if (notify_dedicated_bonding_failed){ 2605 log_info("hci notify_dedicated_bonding_failed"); 2606 hci_emit_dedicated_bonding_result(bd_address, status); 2607 } 2608 2609 // if authentication error, also delete link key 2610 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2611 gap_drop_link_key_for_bd_addr(bd_address); 2612 } 2613 #else 2614 UNUSED(status); 2615 #endif 2616 } 2617 2618 #ifdef ENABLE_CLASSIC 2619 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2620 // SSP Controller 2621 if (features[6] & (1 << 3)){ 2622 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2623 } 2624 // eSCO 2625 if (features[3] & (1<<7)){ 2626 conn->remote_supported_features[0] |= 1; 2627 } 2628 // Extended features 2629 if (features[7] & (1<<7)){ 2630 conn->remote_supported_features[0] |= 2; 2631 } 2632 // SCO packet types 2633 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2634 } 2635 2636 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2637 // SSP Host 2638 if (features[0] & (1 << 0)){ 2639 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2640 } 2641 // SC Host 2642 if (features[0] & (1 << 3)){ 2643 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2644 } 2645 } 2646 2647 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2648 // SC Controller 2649 if (features[1] & (1 << 0)){ 2650 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2651 } 2652 } 2653 2654 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2655 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2656 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2657 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2658 if (conn->bonding_flags & BONDING_DEDICATED){ 2659 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2660 } 2661 } 2662 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2663 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2664 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2665 } 2666 2667 #endif 2668 2669 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2670 // handle BT initialization 2671 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2672 hci_initializing_event_handler(packet, size); 2673 } 2674 2675 // help with BT sleep 2676 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2677 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2678 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2679 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2680 hci_initializing_next_state(); 2681 } 2682 } 2683 2684 #ifdef ENABLE_CLASSIC 2685 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2686 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2687 conn->requested_security_level = LEVEL_0; 2688 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2689 hci_emit_security_level(conn->con_handle, security_level); 2690 2691 // dedicated bonding 2692 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2693 conn->bonding_flags &= ~BONDING_DEDICATED; 2694 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2695 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2696 // emit dedicated bonding complete, don't disconnect 2697 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2698 #else 2699 // request disconnect, event is emitted after disconnect 2700 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2701 #endif 2702 } 2703 } 2704 2705 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2706 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2707 conn->encryption_key_size = encryption_key_size; 2708 2709 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2710 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2711 hci_handle_mutual_authentication_completed(conn); 2712 } else { 2713 // otherwise trigger remote feature request and send authentication request 2714 hci_trigger_remote_features_for_connection(conn); 2715 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2716 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2717 } 2718 } 2719 } 2720 #endif 2721 2722 static void hci_store_local_supported_commands(const uint8_t * packet){ 2723 // create mapping table 2724 #define X(name, offset, bit) { offset, bit }, 2725 static struct { 2726 uint8_t byte_offset; 2727 uint8_t bit_position; 2728 } supported_hci_commands_map [] = { 2729 SUPPORTED_HCI_COMMANDS 2730 }; 2731 #undef X 2732 2733 // create names for debug purposes 2734 #ifdef ENABLE_LOG_DEBUG 2735 #define X(name, offset, bit) #name, 2736 static const char * command_names[] = { 2737 SUPPORTED_HCI_COMMANDS 2738 }; 2739 #undef X 2740 #endif 2741 2742 hci_stack->local_supported_commands = 0; 2743 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2744 uint16_t i; 2745 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2746 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2747 #ifdef ENABLE_LOG_DEBUG 2748 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); 2749 #else 2750 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2751 #endif 2752 hci_stack->local_supported_commands |= (1LU << i); 2753 } 2754 } 2755 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2756 } 2757 2758 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2759 UNUSED(size); 2760 2761 uint8_t status = 0; 2762 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2763 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2764 } 2765 uint16_t manufacturer; 2766 #ifdef ENABLE_CLASSIC 2767 hci_connection_t * conn; 2768 #endif 2769 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2770 hci_con_handle_t handle; 2771 #endif 2772 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2773 le_audio_cig_t * cig; 2774 #endif 2775 2776 // get num cmd packets - limit to 1 to reduce complexity 2777 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2778 2779 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2780 switch (opcode){ 2781 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2782 if (status) break; 2783 // terminate, name 248 chars 2784 packet[6+248] = 0; 2785 log_info("local name: %s", &packet[6]); 2786 break; 2787 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2788 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2789 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2790 uint16_t acl_len = little_endian_read_16(packet, 6); 2791 uint16_t sco_len = packet[8]; 2792 2793 // determine usable ACL/SCO payload size 2794 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2795 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2796 2797 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2798 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2799 2800 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2801 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2802 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2803 } 2804 break; 2805 case HCI_OPCODE_HCI_READ_RSSI: 2806 if (status == ERROR_CODE_SUCCESS){ 2807 uint8_t event[5]; 2808 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2809 event[1] = 3; 2810 (void)memcpy(&event[2], &packet[6], 3); 2811 hci_emit_event(event, sizeof(event), 1); 2812 } 2813 break; 2814 #ifdef ENABLE_BLE 2815 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2816 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2817 hci_stack->le_iso_packets_total_num = packet[11]; 2818 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2819 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2820 2821 /* fall through */ 2822 2823 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2824 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2825 hci_stack->le_acl_packets_total_num = packet[8]; 2826 // determine usable ACL payload size 2827 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2828 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2829 } 2830 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); 2831 break; 2832 #endif 2833 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2834 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2835 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2836 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2837 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); 2838 break; 2839 #endif 2840 #ifdef ENABLE_LE_CENTRAL 2841 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2842 hci_stack->le_whitelist_capacity = packet[6]; 2843 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2844 break; 2845 #endif 2846 #ifdef ENABLE_LE_PERIPHERAL 2847 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2848 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2849 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2850 break; 2851 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2852 if (hci_stack->le_advertising_set_in_current_command != 0) { 2853 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2854 hci_stack->le_advertising_set_in_current_command = 0; 2855 if (advertising_set == NULL) break; 2856 uint8_t adv_status = packet[6]; 2857 uint8_t tx_power = packet[7]; 2858 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 }; 2859 if (adv_status == 0){ 2860 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2861 } 2862 hci_emit_event(event, sizeof(event), 1); 2863 } 2864 break; 2865 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2866 if (hci_stack->le_advertising_set_in_current_command != 0) { 2867 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2868 hci_stack->le_advertising_set_in_current_command = 0; 2869 if (advertising_set == NULL) break; 2870 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2871 if (status == 0){ 2872 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2873 } 2874 hci_emit_event(event, sizeof(event), 1); 2875 } 2876 break; 2877 #endif 2878 #endif 2879 case HCI_OPCODE_HCI_READ_BD_ADDR: 2880 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2881 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2882 #ifdef ENABLE_CLASSIC 2883 if (hci_stack->link_key_db){ 2884 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2885 } 2886 #endif 2887 break; 2888 #ifdef ENABLE_CLASSIC 2889 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2890 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2891 break; 2892 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2893 if (status == ERROR_CODE_SUCCESS) { 2894 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2895 } else { 2896 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2897 } 2898 break; 2899 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2900 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2901 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2902 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2903 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2904 hci_emit_event(event, sizeof(event), 1); 2905 } 2906 break; 2907 #endif 2908 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2909 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2910 2911 #ifdef ENABLE_CLASSIC 2912 // determine usable ACL packet types based on host buffer size and supported features 2913 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]); 2914 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2915 // determine usable SCO packet types based on supported features 2916 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2917 &hci_stack->local_supported_features[0]); 2918 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2919 #endif 2920 // Classic/LE 2921 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2922 break; 2923 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2924 manufacturer = little_endian_read_16(packet, 10); 2925 // map Cypress & Infineon to Broadcom 2926 switch (manufacturer){ 2927 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2928 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2929 log_info("Treat Cypress/Infineon as Broadcom"); 2930 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2931 little_endian_store_16(packet, 10, manufacturer); 2932 break; 2933 default: 2934 break; 2935 } 2936 hci_stack->manufacturer = manufacturer; 2937 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2938 break; 2939 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2940 hci_store_local_supported_commands(packet); 2941 break; 2942 #ifdef ENABLE_CLASSIC 2943 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2944 if (status) return; 2945 hci_stack->synchronous_flow_control_enabled = 1; 2946 break; 2947 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2948 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2949 conn = hci_connection_for_handle(handle); 2950 if (conn != NULL) { 2951 uint8_t key_size = 0; 2952 if (status == 0){ 2953 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2954 log_info("Handle %04x key Size: %u", handle, key_size); 2955 } else { 2956 key_size = 1; 2957 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2958 } 2959 hci_handle_read_encryption_key_size_complete(conn, key_size); 2960 } 2961 break; 2962 // assert pairing complete event is emitted. 2963 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2964 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2965 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2966 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2967 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2968 // lookup connection by gap pairing addr 2969 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2970 if (conn == NULL) break; 2971 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2972 break; 2973 2974 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2975 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2976 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2977 uint8_t event[67]; 2978 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2979 event[1] = 65; 2980 (void)memset(&event[2], 0, 65); 2981 if (status == ERROR_CODE_SUCCESS){ 2982 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2983 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2984 event[2] = 3; 2985 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2986 } else { 2987 event[2] = 1; 2988 } 2989 } 2990 hci_emit_event(event, sizeof(event), 0); 2991 break; 2992 } 2993 2994 // note: only needed if user does not provide OOB data 2995 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2996 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2997 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2998 if (conn == NULL) break; 2999 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3000 break; 3001 #endif 3002 #endif 3003 #ifdef ENABLE_BLE 3004 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3005 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3006 // lookup CIG 3007 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3008 if (cig != NULL){ 3009 uint8_t i = 0; 3010 if (status == ERROR_CODE_SUCCESS){ 3011 // assign CIS handles to pre-allocated CIS 3012 btstack_linked_list_iterator_t it; 3013 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3014 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3015 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3016 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3017 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3018 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3019 iso_stream->cis_handle = cis_handle; 3020 cig->cis_con_handles[i] = cis_handle; 3021 i++; 3022 } 3023 } 3024 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3025 hci_emit_cig_created(cig, status); 3026 } else { 3027 hci_emit_cig_created(cig, status); 3028 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3029 } 3030 } 3031 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3032 break; 3033 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3034 if (status != ERROR_CODE_SUCCESS){ 3035 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3036 } 3037 break; 3038 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3039 if (status != ERROR_CODE_SUCCESS){ 3040 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3041 } 3042 break; 3043 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3044 // lookup BIG by state 3045 btstack_linked_list_iterator_t it; 3046 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3047 while (btstack_linked_list_iterator_has_next(&it)) { 3048 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3049 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3050 if (status == ERROR_CODE_SUCCESS){ 3051 big->state_vars.next_bis++; 3052 if (big->state_vars.next_bis == big->num_bis){ 3053 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3054 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3055 } else { 3056 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3057 } 3058 } else { 3059 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3060 big->state_vars.status = status; 3061 } 3062 return; 3063 } 3064 } 3065 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3066 while (btstack_linked_list_iterator_has_next(&it)) { 3067 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3068 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3069 if (status == ERROR_CODE_SUCCESS){ 3070 big_sync->state_vars.next_bis++; 3071 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3072 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3073 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3074 } else { 3075 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3076 } 3077 } else { 3078 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3079 big_sync->state_vars.status = status; 3080 } 3081 return; 3082 } 3083 } 3084 // Lookup CIS via active group operation 3085 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3086 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3087 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3088 3089 // lookup CIS by state 3090 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3091 while (btstack_linked_list_iterator_has_next(&it)){ 3092 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3093 handle = iso_stream->cis_handle; 3094 bool emit_cis_created = false; 3095 switch (iso_stream->state){ 3096 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3097 if (status != ERROR_CODE_SUCCESS){ 3098 emit_cis_created = true; 3099 break; 3100 } 3101 if (iso_stream->max_sdu_c_to_p > 0){ 3102 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3103 } else { 3104 emit_cis_created = true; 3105 } 3106 break; 3107 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3108 emit_cis_created = true; 3109 break; 3110 default: 3111 break; 3112 } 3113 if (emit_cis_created){ 3114 hci_cis_handle_created(iso_stream, status); 3115 } 3116 } 3117 } else { 3118 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3119 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3120 if (cig != NULL) { 3121 // emit cis created if all ISO Paths have been created 3122 // assume we are central 3123 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3124 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3125 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3126 // if outgoing has been setup, or incoming was setup but outgoing not required 3127 if ((cis_direction == 1) || (outgoing_needed == false)){ 3128 // lookup iso stream by cig/cis 3129 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3130 while (btstack_linked_list_iterator_has_next(&it)) { 3131 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3132 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3133 hci_cis_handle_created(iso_stream, status); 3134 } 3135 } 3136 } 3137 // next state 3138 cig->state_vars.next_cis++; 3139 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3140 } 3141 } 3142 } 3143 break; 3144 } 3145 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3146 // lookup BIG by state 3147 btstack_linked_list_iterator_t it; 3148 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3149 while (btstack_linked_list_iterator_has_next(&it)) { 3150 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3151 uint8_t big_handle = big_sync->big_handle; 3152 switch (big_sync->state){ 3153 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3154 btstack_linked_list_iterator_remove(&it); 3155 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3156 return; 3157 default: 3158 btstack_linked_list_iterator_remove(&it); 3159 hci_emit_big_sync_stopped(big_handle); 3160 return; 3161 } 3162 } 3163 break; 3164 } 3165 #endif 3166 #endif 3167 default: 3168 break; 3169 } 3170 } 3171 3172 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3173 UNUSED(size); 3174 3175 // get num cmd packets - limit to 1 to reduce complexity 3176 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3177 3178 // get opcode and command status 3179 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3180 3181 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3182 uint8_t status = hci_event_command_status_get_status(packet); 3183 #endif 3184 3185 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3186 bd_addr_type_t addr_type; 3187 bd_addr_t addr; 3188 #endif 3189 3190 switch (opcode){ 3191 #ifdef ENABLE_CLASSIC 3192 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3193 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3194 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3195 #endif 3196 #ifdef ENABLE_LE_CENTRAL 3197 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3198 #endif 3199 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3200 addr_type = hci_stack->outgoing_addr_type; 3201 memcpy(addr, hci_stack->outgoing_addr, 6); 3202 3203 // reset outgoing address info 3204 memset(hci_stack->outgoing_addr, 0, 6); 3205 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3206 3207 // on error 3208 if (status != ERROR_CODE_SUCCESS){ 3209 #ifdef ENABLE_LE_CENTRAL 3210 if (hci_is_le_connection_type(addr_type)){ 3211 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3212 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3213 } 3214 #endif 3215 // error => outgoing connection failed 3216 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3217 if (conn != NULL){ 3218 hci_handle_connection_failed(conn, status); 3219 } 3220 } 3221 break; 3222 #endif 3223 #ifdef ENABLE_CLASSIC 3224 case HCI_OPCODE_HCI_INQUIRY: 3225 if (status == ERROR_CODE_SUCCESS) { 3226 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3227 } else { 3228 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3229 } 3230 break; 3231 #endif 3232 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3233 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3234 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3235 if (status == ERROR_CODE_SUCCESS){ 3236 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3237 } else { 3238 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3239 } 3240 break; 3241 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3242 default: 3243 break; 3244 } 3245 } 3246 3247 #ifdef ENABLE_BLE 3248 static void event_handle_le_connection_complete(const uint8_t * packet){ 3249 bd_addr_t addr; 3250 bd_addr_type_t addr_type; 3251 hci_connection_t * conn; 3252 3253 // read fields 3254 uint8_t status = packet[3]; 3255 hci_role_t role = (hci_role_t) packet[6]; 3256 3257 // support different connection complete events 3258 uint16_t conn_interval; 3259 switch (packet[2]){ 3260 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3261 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3262 break; 3263 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3264 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3265 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3266 break; 3267 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3268 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3269 break; 3270 #endif 3271 default: 3272 btstack_unreachable(); 3273 return; 3274 } 3275 3276 // Connection management 3277 reverse_bd_addr(&packet[8], addr); 3278 addr_type = (bd_addr_type_t)packet[7]; 3279 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3280 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3281 3282 #ifdef ENABLE_LE_CENTRAL 3283 // handle error: error is reported only to the initiator -> outgoing connection 3284 if (status){ 3285 3286 // handle cancelled outgoing connection 3287 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3288 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3289 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3290 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3291 // reset state 3292 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3293 // get outgoing connection conn struct for direct connect 3294 conn = gap_get_outgoing_connection(); 3295 } 3296 3297 // outgoing le connection establishment is done 3298 if (conn){ 3299 // remove entry 3300 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3301 btstack_memory_hci_connection_free( conn ); 3302 } 3303 return; 3304 } 3305 #endif 3306 3307 // on success, both hosts receive connection complete event 3308 if (role == HCI_ROLE_MASTER){ 3309 #ifdef ENABLE_LE_CENTRAL 3310 // if we're master on an le connection, it was an outgoing connection and we're done with it 3311 // note: no hci_connection_t object exists yet for connect with whitelist 3312 if (hci_is_le_connection_type(addr_type)){ 3313 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3314 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3315 } 3316 #endif 3317 } else { 3318 #ifdef ENABLE_LE_PERIPHERAL 3319 // if we're slave, it was an incoming connection, advertisements have stopped 3320 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3321 #endif 3322 } 3323 3324 // LE connections are auto-accepted, so just create a connection if there isn't one already 3325 if (!conn){ 3326 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3327 } 3328 3329 // no memory, sorry. 3330 if (!conn){ 3331 return; 3332 } 3333 3334 conn->state = OPEN; 3335 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3336 conn->le_connection_interval = conn_interval; 3337 3338 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3339 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3340 3341 #ifdef ENABLE_LE_PERIPHERAL 3342 if (role == HCI_ROLE_SLAVE){ 3343 hci_update_advertisements_enabled_for_current_roles(); 3344 } 3345 #endif 3346 3347 // init unenhanced att bearer mtu 3348 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3349 conn->att_connection.mtu_exchanged = false; 3350 3351 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3352 3353 // restart timer 3354 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3355 // btstack_run_loop_add_timer(&conn->timeout); 3356 3357 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3358 3359 hci_emit_nr_connections_changed(); 3360 } 3361 #endif 3362 3363 #ifdef ENABLE_CLASSIC 3364 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){ 3365 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3366 // LEVEL_4 is tested by l2cap 3367 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3368 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3369 if (level >= LEVEL_3){ 3370 // MITM not possible without keyboard or display 3371 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3372 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3373 3374 // MITM possible if one side has keyboard and the other has keyboard or display 3375 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3376 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3377 3378 // MITM not possible if one side has only display and other side has no keyboard 3379 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3380 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3381 } 3382 // LEVEL 2 requires SSP, which is a given 3383 return true; 3384 } 3385 3386 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3387 // get requested security level 3388 gap_security_level_t requested_security_level = conn->requested_security_level; 3389 if (hci_stack->gap_secure_connections_only_mode){ 3390 requested_security_level = LEVEL_4; 3391 } 3392 3393 // assess security: LEVEL 4 requires SC 3394 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3395 if ((requested_security_level == LEVEL_4) && 3396 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3397 !hci_remote_sc_enabled(conn)){ 3398 log_info("Level 4 required, but SC not supported -> abort"); 3399 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3400 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3401 return; 3402 } 3403 3404 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3405 // - GAP/MOD/NBON/BV-02-C 3406 // - GAP/DM/NBON/BV-01-C 3407 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3408 switch (conn->io_cap_response_auth_req){ 3409 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3410 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3411 if (hci_stack->bondable == false){ 3412 log_info("Dedicated vs. non-bondable -> abort"); 3413 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3414 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3415 return; 3416 } 3417 default: 3418 break; 3419 } 3420 } 3421 3422 // assess security based on io capabilities 3423 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3424 // responder: fully validate io caps of both sides as well as OOB data 3425 bool security_possible = false; 3426 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3427 3428 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3429 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3430 // so we merge the OOB data availability 3431 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3432 if (conn->classic_oob_c_192 != NULL){ 3433 have_oob_data |= 1; 3434 } 3435 if (conn->classic_oob_c_256 != NULL){ 3436 have_oob_data |= 2; 3437 } 3438 // for up to Level 3, either P-192 as well as P-256 will do 3439 // 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 3440 // if remote does not SC, we should not receive P-256 data either 3441 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3442 security_possible = true; 3443 } 3444 // for Level 4, P-256 is needed 3445 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3446 security_possible = true; 3447 } 3448 #endif 3449 3450 if (security_possible == false){ 3451 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3452 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3453 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3454 return; 3455 } 3456 } else { 3457 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3458 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3459 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3460 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3461 log_info("Level 3+ required, but no input/output -> abort"); 3462 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3463 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3464 return; 3465 } 3466 #endif 3467 #endif 3468 } 3469 3470 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3471 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3472 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3473 } else { 3474 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3475 } 3476 #endif 3477 } 3478 3479 #endif 3480 3481 static void event_handler(uint8_t *packet, uint16_t size){ 3482 3483 uint16_t event_length = packet[1]; 3484 3485 // assert packet is complete 3486 if (size != (event_length + 2u)){ 3487 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3488 return; 3489 } 3490 3491 hci_con_handle_t handle; 3492 hci_connection_t * conn; 3493 int i; 3494 3495 #ifdef ENABLE_CLASSIC 3496 hci_link_type_t link_type; 3497 bd_addr_t addr; 3498 bd_addr_type_t addr_type; 3499 #endif 3500 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3501 hci_iso_stream_t * iso_stream; 3502 le_audio_big_t * big; 3503 le_audio_big_sync_t * big_sync; 3504 #endif 3505 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3506 btstack_linked_list_iterator_t it; 3507 #endif 3508 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3509 uint8_t advertising_handle; 3510 #endif 3511 3512 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3513 3514 switch (hci_event_packet_get_type(packet)) { 3515 3516 case HCI_EVENT_COMMAND_COMPLETE: 3517 handle_command_complete_event(packet, size); 3518 break; 3519 3520 case HCI_EVENT_COMMAND_STATUS: 3521 handle_command_status_event(packet, size); 3522 break; 3523 3524 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3525 if (size < 3) return; 3526 uint16_t num_handles = packet[2]; 3527 if (size != (3u + num_handles * 4u)) return; 3528 #ifdef ENABLE_CLASSIC 3529 bool notify_sco = false; 3530 #endif 3531 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3532 bool notify_iso = false; 3533 #endif 3534 uint16_t offset = 3; 3535 for (i=0; i<num_handles;i++){ 3536 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3537 offset += 2u; 3538 uint16_t num_packets = little_endian_read_16(packet, offset); 3539 offset += 2u; 3540 3541 conn = hci_connection_for_handle(handle); 3542 if (conn != NULL) { 3543 3544 if (conn->num_packets_sent >= num_packets) { 3545 conn->num_packets_sent -= num_packets; 3546 } else { 3547 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3548 conn->num_packets_sent = 0; 3549 } 3550 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3551 #ifdef ENABLE_CLASSIC 3552 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3553 notify_sco = true; 3554 } 3555 #endif 3556 } 3557 3558 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3559 hci_controller_dump_packets(); 3560 #endif 3561 3562 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3563 if (conn == NULL){ 3564 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3565 if (iso_stream != NULL){ 3566 if (iso_stream->num_packets_sent >= num_packets) { 3567 iso_stream->num_packets_sent -= num_packets; 3568 } else { 3569 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3570 iso_stream->num_packets_sent = 0; 3571 } 3572 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3573 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3574 if (big != NULL){ 3575 big->num_completed_timestamp_current_valid = true; 3576 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3577 } 3578 } 3579 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3580 num_packets, handle, iso_stream->num_packets_sent); 3581 notify_iso = true; 3582 } 3583 } 3584 #endif 3585 } 3586 3587 #ifdef ENABLE_CLASSIC 3588 if (notify_sco){ 3589 hci_notify_if_sco_can_send_now(); 3590 } 3591 #endif 3592 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3593 if (notify_iso){ 3594 hci_iso_notify_can_send_now(); 3595 } 3596 #endif 3597 break; 3598 } 3599 3600 #ifdef ENABLE_CLASSIC 3601 case HCI_EVENT_FLUSH_OCCURRED: 3602 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3603 handle = hci_event_flush_occurred_get_handle(packet); 3604 conn = hci_connection_for_handle(handle); 3605 if (conn) { 3606 log_info("Flush occurred, disconnect 0x%04x", handle); 3607 conn->state = SEND_DISCONNECT; 3608 } 3609 break; 3610 3611 case HCI_EVENT_INQUIRY_COMPLETE: 3612 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3613 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3614 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3615 hci_emit_event(event, sizeof(event), 1); 3616 } 3617 break; 3618 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3619 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3620 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3621 } 3622 break; 3623 case HCI_EVENT_CONNECTION_REQUEST: 3624 reverse_bd_addr(&packet[2], addr); 3625 link_type = (hci_link_type_t) packet[11]; 3626 3627 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3628 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3629 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3630 bd_addr_copy(hci_stack->decline_addr, addr); 3631 break; 3632 } 3633 3634 if (hci_stack->gap_classic_accept_callback != NULL){ 3635 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3636 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3637 bd_addr_copy(hci_stack->decline_addr, addr); 3638 break; 3639 } 3640 } 3641 3642 // TODO: eval COD 8-10 3643 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3644 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3645 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3646 if (!conn) { 3647 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3648 } 3649 if (!conn) { 3650 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3651 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3652 bd_addr_copy(hci_stack->decline_addr, addr); 3653 hci_run(); 3654 // avoid event to higher layer 3655 return; 3656 } 3657 conn->state = RECEIVED_CONNECTION_REQUEST; 3658 // store info about eSCO 3659 if (link_type == HCI_LINK_TYPE_ESCO){ 3660 conn->remote_supported_features[0] |= 1; 3661 } 3662 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3663 if (addr_type == BD_ADDR_TYPE_SCO){ 3664 hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3665 btstack_assert(acl_conn != NULL); 3666 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3667 } 3668 hci_run(); 3669 break; 3670 3671 case HCI_EVENT_CONNECTION_COMPLETE: 3672 // Connection management 3673 reverse_bd_addr(&packet[5], addr); 3674 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3675 addr_type = BD_ADDR_TYPE_ACL; 3676 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3677 if (conn) { 3678 switch (conn->state){ 3679 // expected states 3680 case ACCEPTED_CONNECTION_REQUEST: 3681 case SENT_CREATE_CONNECTION: 3682 break; 3683 // unexpected state -> ignore 3684 default: 3685 // don't forward event to app 3686 return; 3687 } 3688 if (!packet[2]){ 3689 conn->state = OPEN; 3690 conn->con_handle = little_endian_read_16(packet, 3); 3691 3692 // trigger write supervision timeout if we're master 3693 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3694 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3695 } 3696 3697 // trigger write automatic flush timeout 3698 if (hci_stack->automatic_flush_timeout != 0){ 3699 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3700 } 3701 3702 // restart timer 3703 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3704 btstack_run_loop_add_timer(&conn->timeout); 3705 3706 // trigger remote features for dedicated bonding 3707 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3708 hci_trigger_remote_features_for_connection(conn); 3709 } 3710 3711 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3712 3713 hci_emit_nr_connections_changed(); 3714 } else { 3715 // connection failed 3716 hci_handle_connection_failed(conn, packet[2]); 3717 } 3718 } 3719 break; 3720 3721 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3722 reverse_bd_addr(&packet[5], addr); 3723 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3724 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3725 btstack_assert(conn != NULL); 3726 3727 if (packet[2] != ERROR_CODE_SUCCESS){ 3728 // connection failed, remove entry 3729 hci_handle_connection_failed(conn, packet[2]); 3730 break; 3731 } 3732 3733 conn->state = OPEN; 3734 conn->con_handle = little_endian_read_16(packet, 3); 3735 3736 // update sco payload length for eSCO connections 3737 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3738 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3739 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3740 } 3741 3742 #ifdef ENABLE_SCO_OVER_HCI 3743 // update SCO 3744 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3745 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3746 } 3747 // trigger can send now 3748 if (hci_have_usb_transport()){ 3749 hci_stack->sco_can_send_now = true; 3750 } 3751 3752 // setup implict sco flow control 3753 conn->sco_tx_ready = 0; 3754 conn->sco_tx_active = 0; 3755 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3756 3757 #endif 3758 #ifdef HAVE_SCO_TRANSPORT 3759 // configure sco transport 3760 if (hci_stack->sco_transport != NULL){ 3761 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3762 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3763 } 3764 #endif 3765 break; 3766 3767 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3768 handle = little_endian_read_16(packet, 3); 3769 conn = hci_connection_for_handle(handle); 3770 if (!conn) break; 3771 if (!packet[2]){ 3772 const uint8_t * features = &packet[5]; 3773 hci_handle_remote_features_page_0(conn, features); 3774 3775 // read extended features if possible 3776 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3777 && ((conn->remote_supported_features[0] & 2) != 0)) { 3778 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3779 break; 3780 } 3781 } 3782 hci_handle_remote_features_received(conn); 3783 break; 3784 3785 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3786 handle = little_endian_read_16(packet, 3); 3787 conn = hci_connection_for_handle(handle); 3788 if (!conn) break; 3789 // status = ok, page = 1 3790 if (!packet[2]) { 3791 uint8_t page_number = packet[5]; 3792 uint8_t maximum_page_number = packet[6]; 3793 const uint8_t * features = &packet[7]; 3794 bool done = false; 3795 switch (page_number){ 3796 case 1: 3797 hci_handle_remote_features_page_1(conn, features); 3798 if (maximum_page_number >= 2){ 3799 // get Secure Connections (Controller) from Page 2 if available 3800 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3801 } else { 3802 // otherwise, assume SC (Controller) == SC (Host) 3803 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3804 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3805 } 3806 done = true; 3807 } 3808 break; 3809 case 2: 3810 hci_handle_remote_features_page_2(conn, features); 3811 done = true; 3812 break; 3813 default: 3814 break; 3815 } 3816 if (!done) break; 3817 } 3818 hci_handle_remote_features_received(conn); 3819 break; 3820 3821 case HCI_EVENT_LINK_KEY_REQUEST: 3822 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3823 hci_event_link_key_request_get_bd_addr(packet, addr); 3824 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3825 if (!conn) break; 3826 3827 // lookup link key in db if not cached 3828 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3829 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3830 } 3831 3832 // response sent by hci_run() 3833 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3834 #endif 3835 break; 3836 3837 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3838 hci_event_link_key_request_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_pairing_complete(conn, ERROR_CODE_SUCCESS); 3843 3844 // CVE-2020-26555: ignore NULL link key 3845 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3846 if (btstack_is_null(&packet[8], 16)) break; 3847 3848 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3849 // Change Connection Encryption keeps link key type 3850 if (link_key_type != CHANGED_COMBINATION_KEY){ 3851 conn->link_key_type = link_key_type; 3852 } 3853 3854 // cache link key. link keys stored in little-endian format for legacy reasons 3855 memcpy(&conn->link_key, &packet[8], 16); 3856 3857 // only store link key: 3858 // - if bondable enabled 3859 if (hci_stack->bondable == false) break; 3860 // - if security level sufficient 3861 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3862 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3863 break; 3864 } 3865 3866 case HCI_EVENT_PIN_CODE_REQUEST: 3867 hci_event_pin_code_request_get_bd_addr(packet, addr); 3868 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3869 if (!conn) break; 3870 3871 hci_pairing_started(conn, false); 3872 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3873 if (!hci_stack->bondable ){ 3874 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3875 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3876 hci_run(); 3877 return; 3878 } 3879 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3880 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3881 log_info("Level 4 required, but SC not supported -> abort"); 3882 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3883 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3884 hci_run(); 3885 return; 3886 } 3887 break; 3888 3889 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3890 hci_event_io_capability_response_get_bd_addr(packet, addr); 3891 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3892 if (!conn) break; 3893 3894 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3895 hci_pairing_started(conn, true); 3896 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3897 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3898 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3899 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3900 #endif 3901 break; 3902 3903 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3904 hci_event_io_capability_response_get_bd_addr(packet, addr); 3905 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3906 if (!conn) break; 3907 3908 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3909 hci_connection_timestamp(conn); 3910 hci_pairing_started(conn, true); 3911 break; 3912 3913 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3914 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3915 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3916 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3917 if (!conn) break; 3918 3919 hci_connection_timestamp(conn); 3920 3921 hci_pairing_started(conn, true); 3922 3923 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3924 break; 3925 #endif 3926 3927 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3928 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3929 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3930 if (!conn) break; 3931 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3932 if (hci_stack->ssp_auto_accept){ 3933 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3934 }; 3935 } else { 3936 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3937 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3938 // don't forward event to app 3939 hci_run(); 3940 return; 3941 } 3942 break; 3943 3944 case HCI_EVENT_USER_PASSKEY_REQUEST: 3945 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3946 if (hci_stack->ssp_auto_accept){ 3947 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3948 }; 3949 break; 3950 3951 case HCI_EVENT_MODE_CHANGE: 3952 handle = hci_event_mode_change_get_handle(packet); 3953 conn = hci_connection_for_handle(handle); 3954 if (!conn) break; 3955 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3956 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3957 break; 3958 #endif 3959 3960 case HCI_EVENT_ENCRYPTION_CHANGE: 3961 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3962 handle = hci_event_encryption_change_get_connection_handle(packet); 3963 conn = hci_connection_for_handle(handle); 3964 if (!conn) break; 3965 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3966 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3967 if (encryption_enabled){ 3968 if (hci_is_le_connection(conn)){ 3969 // For LE, we accept connection as encrypted 3970 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3971 } 3972 #ifdef ENABLE_CLASSIC 3973 else { 3974 3975 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3976 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3977 bool connected_uses_aes_ccm = encryption_enabled == 2; 3978 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3979 #ifdef ENABLE_TESTING_SUPPORT 3980 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 3981 // - GAP/SEC/SEM/BI-31-C 3982 // - GAP/SEC/SEM/BI-32-C 3983 // - GAP/SEC/SEM/BI-33-C 3984 3985 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 3986 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 3987 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3988 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 3989 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3990 } 3991 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 3992 conn->link_key_type, new_link_key_type); 3993 conn->link_key_type = new_link_key_type; 3994 #else 3995 log_info("SC during pairing, but only E0 now -> abort"); 3996 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3997 break; 3998 #endif 3999 } 4000 4001 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4002 if (connected_uses_aes_ccm){ 4003 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4004 } 4005 4006 #ifdef ENABLE_TESTING_SUPPORT 4007 // work around for issue with PTS dongle 4008 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4009 #endif 4010 // validate encryption key size 4011 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4012 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4013 // already got encryption key size 4014 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4015 } else { 4016 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4017 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4018 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4019 } else { 4020 // if not, pretend everything is perfect 4021 hci_handle_read_encryption_key_size_complete(conn, 16); 4022 } 4023 } 4024 } 4025 #endif 4026 } else { 4027 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4028 } 4029 } else { 4030 #ifdef ENABLE_CLASSIC 4031 if (!hci_is_le_connection(conn)){ 4032 uint8_t status = hci_event_encryption_change_get_status(packet); 4033 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4034 conn->bonding_flags &= ~BONDING_DEDICATED; 4035 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4036 conn->bonding_status = status; 4037 } 4038 // trigger security update -> level 0 4039 hci_handle_mutual_authentication_completed(conn); 4040 } 4041 #endif 4042 } 4043 4044 break; 4045 4046 #ifdef ENABLE_CLASSIC 4047 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4048 handle = hci_event_authentication_complete_get_connection_handle(packet); 4049 conn = hci_connection_for_handle(handle); 4050 if (!conn) break; 4051 4052 // clear authentication active flag 4053 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4054 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4055 4056 // authenticated only if auth status == 0 4057 if (hci_event_authentication_complete_get_status(packet) == 0){ 4058 // authenticated 4059 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4060 4061 // If not already encrypted, start encryption 4062 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4063 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4064 break; 4065 } 4066 } 4067 4068 // emit updated security level (will be 0 if not authenticated) 4069 hci_handle_mutual_authentication_completed(conn); 4070 break; 4071 4072 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4073 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4074 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4075 if (!conn) break; 4076 4077 // treat successfully paired connection as authenticated 4078 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4079 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4080 } 4081 4082 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4083 break; 4084 #endif 4085 4086 // HCI_EVENT_DISCONNECTION_COMPLETE 4087 // has been split, to first notify stack before shutting connection down 4088 // see end of function, too. 4089 case HCI_EVENT_DISCONNECTION_COMPLETE: 4090 if (packet[2]) break; // status != 0 4091 handle = little_endian_read_16(packet, 3); 4092 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4093 if (hci_stack->acl_fragmentation_total_size > 0u) { 4094 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4095 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4096 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4097 hci_stack->acl_fragmentation_total_size = 0; 4098 hci_stack->acl_fragmentation_pos = 0; 4099 if (release_buffer){ 4100 hci_release_packet_buffer(); 4101 } 4102 } 4103 } 4104 4105 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4106 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4107 if (hci_stack->iso_fragmentation_total_size > 0u) { 4108 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4109 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4110 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4111 hci_stack->iso_fragmentation_total_size = 0; 4112 hci_stack->iso_fragmentation_pos = 0; 4113 if (release_buffer){ 4114 hci_release_packet_buffer(); 4115 } 4116 } 4117 } 4118 4119 // finalize iso stream for CIS handle 4120 iso_stream = hci_iso_stream_for_con_handle(handle); 4121 if (iso_stream != NULL){ 4122 hci_iso_stream_finalize(iso_stream); 4123 break; 4124 } 4125 4126 // finalize iso stream(s) for ACL handle 4127 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4128 while (btstack_linked_list_iterator_has_next(&it)){ 4129 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4130 if (iso_stream->acl_handle == handle ) { 4131 hci_iso_stream_finalize(iso_stream); 4132 } 4133 } 4134 #endif 4135 4136 conn = hci_connection_for_handle(handle); 4137 if (!conn) break; 4138 #ifdef ENABLE_CLASSIC 4139 // pairing failed if it was ongoing 4140 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4141 #endif 4142 4143 // emit dedicatd bonding event 4144 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4145 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4146 } 4147 4148 // mark connection for shutdown, stop timers, reset state 4149 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4150 hci_connection_stop_timer(conn); 4151 hci_connection_init(conn); 4152 4153 #ifdef ENABLE_BLE 4154 #ifdef ENABLE_LE_PERIPHERAL 4155 // re-enable advertisements for le connections if active 4156 if (hci_is_le_connection(conn)){ 4157 hci_update_advertisements_enabled_for_current_roles(); 4158 } 4159 #endif 4160 #endif 4161 break; 4162 4163 case HCI_EVENT_HARDWARE_ERROR: 4164 log_error("Hardware Error: 0x%02x", packet[2]); 4165 if (hci_stack->hardware_error_callback){ 4166 (*hci_stack->hardware_error_callback)(packet[2]); 4167 } else { 4168 // if no special requests, just reboot stack 4169 hci_power_control_off(); 4170 hci_power_control_on(); 4171 } 4172 break; 4173 4174 #ifdef ENABLE_CLASSIC 4175 case HCI_EVENT_ROLE_CHANGE: 4176 if (packet[2]) break; // status != 0 4177 reverse_bd_addr(&packet[3], addr); 4178 addr_type = BD_ADDR_TYPE_ACL; 4179 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4180 if (!conn) break; 4181 conn->role = (hci_role_t) packet[9]; 4182 break; 4183 #endif 4184 4185 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4186 // release packet buffer only for asynchronous transport and if there are not further fragments 4187 if (hci_transport_synchronous()) { 4188 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4189 return; // instead of break: to avoid re-entering hci_run() 4190 } 4191 hci_stack->acl_fragmentation_tx_active = 0; 4192 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4193 hci_stack->iso_fragmentation_tx_active = 0; 4194 if (hci_stack->iso_fragmentation_total_size) break; 4195 #endif 4196 if (hci_stack->acl_fragmentation_total_size) break; 4197 hci_release_packet_buffer(); 4198 4199 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4200 hci_iso_notify_can_send_now(); 4201 #endif 4202 // L2CAP receives this event via the hci_emit_event below 4203 4204 #ifdef ENABLE_CLASSIC 4205 // For SCO, we do the can_send_now_check here 4206 hci_notify_if_sco_can_send_now(); 4207 #endif 4208 break; 4209 4210 #ifdef ENABLE_CLASSIC 4211 case HCI_EVENT_SCO_CAN_SEND_NOW: 4212 // For SCO, we do the can_send_now_check here 4213 hci_stack->sco_can_send_now = true; 4214 hci_notify_if_sco_can_send_now(); 4215 return; 4216 4217 // explode inquriy results for easier consumption 4218 case HCI_EVENT_INQUIRY_RESULT: 4219 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4220 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4221 gap_inquiry_explode(packet, size); 4222 break; 4223 #endif 4224 4225 #ifdef ENABLE_BLE 4226 case HCI_EVENT_LE_META: 4227 switch (packet[2]){ 4228 #ifdef ENABLE_LE_CENTRAL 4229 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4230 if (!hci_stack->le_scanning_enabled) break; 4231 le_handle_advertisement_report(packet, size); 4232 break; 4233 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4234 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4235 if (!hci_stack->le_scanning_enabled) break; 4236 le_handle_extended_advertisement_report(packet, size); 4237 break; 4238 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4239 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4240 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4241 break; 4242 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4243 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4244 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4245 while (btstack_linked_list_iterator_has_next(&it)) { 4246 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4247 if (advertising_set->advertising_handle == advertising_handle){ 4248 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4249 } 4250 } 4251 break; 4252 #endif 4253 #endif 4254 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4255 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4256 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4257 event_handle_le_connection_complete(packet); 4258 break; 4259 4260 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4261 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4262 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4263 conn = hci_connection_for_handle(handle); 4264 if (!conn) break; 4265 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4266 break; 4267 4268 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4269 // connection 4270 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4271 conn = hci_connection_for_handle(handle); 4272 if (conn) { 4273 // read arguments 4274 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4275 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4276 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4277 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4278 4279 // validate against current connection parameter range 4280 le_connection_parameter_range_t existing_range; 4281 gap_get_connection_parameter_range(&existing_range); 4282 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4283 if (update_parameter){ 4284 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4285 conn->le_conn_interval_min = le_conn_interval_min; 4286 conn->le_conn_interval_max = le_conn_interval_max; 4287 conn->le_conn_latency = le_conn_latency; 4288 conn->le_supervision_timeout = le_supervision_timeout; 4289 } else { 4290 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4291 } 4292 } 4293 break; 4294 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4295 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4296 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4297 conn = hci_connection_for_handle(handle); 4298 if (conn) { 4299 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4300 } 4301 break; 4302 #endif 4303 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4304 case HCI_SUBEVENT_LE_CIS_REQUEST: 4305 // incoming CIS request, allocate iso stream object and cache metadata 4306 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4307 hci_subevent_le_cis_request_get_cig_id(packet), 4308 hci_subevent_le_cis_request_get_cis_id(packet)); 4309 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4310 if (iso_stream != NULL){ 4311 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4312 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4313 } 4314 break; 4315 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4316 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4317 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4318 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4319 iso_stream = hci_iso_stream_for_con_handle(handle); 4320 btstack_assert(iso_stream != NULL); 4321 // track connection info 4322 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4323 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4324 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4325 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4326 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4327 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4328 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4329 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4330 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4331 // CIS Accept by Peripheral 4332 if (status == ERROR_CODE_SUCCESS){ 4333 if (iso_stream->max_sdu_p_to_c > 0){ 4334 // we're peripheral and we will send data 4335 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4336 } else { 4337 // we're peripheral and we will only receive data 4338 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4339 } 4340 } else { 4341 hci_cis_handle_created(iso_stream, status); 4342 } 4343 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4344 } else { 4345 // CIG Setup by Central 4346 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4347 btstack_assert(cig != NULL); 4348 // update iso stream state 4349 if (status == ERROR_CODE_SUCCESS){ 4350 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4351 } else { 4352 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4353 } 4354 // update cig state 4355 uint8_t i; 4356 for (i=0;i<cig->num_cis;i++){ 4357 if (cig->cis_con_handles[i] == handle){ 4358 cig->cis_setup_active[i] = false; 4359 if (status == ERROR_CODE_SUCCESS){ 4360 cig->cis_established[i] = true; 4361 } else { 4362 hci_cis_handle_created(iso_stream, status); 4363 } 4364 } 4365 } 4366 4367 // trigger iso path setup if complete 4368 bool cis_setup_active = false; 4369 for (i=0;i<cig->num_cis;i++){ 4370 cis_setup_active |= cig->cis_setup_active[i]; 4371 } 4372 if (cis_setup_active == false){ 4373 cig->state_vars.next_cis = 0; 4374 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4375 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4376 } 4377 } 4378 } 4379 break; 4380 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4381 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4382 big = hci_big_for_handle(packet[4]); 4383 if (big != NULL){ 4384 uint8_t status = packet[3]; 4385 if (status == ERROR_CODE_SUCCESS){ 4386 // store bis_con_handles and trigger iso path setup 4387 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4388 uint8_t i; 4389 for (i=0;i<num_bis;i++){ 4390 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4391 big->bis_con_handles[i] = bis_handle; 4392 // assign bis handle 4393 btstack_linked_list_iterator_t it; 4394 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4395 while (btstack_linked_list_iterator_has_next(&it)){ 4396 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4397 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4398 (iso_stream->group_id == big->big_handle)){ 4399 iso_stream->cis_handle = bis_handle; 4400 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4401 break; 4402 } 4403 } 4404 } 4405 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4406 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4407 big->state_vars.next_bis = 0; 4408 } 4409 } else { 4410 // create BIG failed or has been stopped by us 4411 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4412 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4413 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4414 hci_emit_big_created(big, status); 4415 } else { 4416 hci_emit_big_terminated(big); 4417 } 4418 } 4419 } 4420 break; 4421 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4422 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4423 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4424 if (big != NULL){ 4425 // finalize associated ISO streams 4426 btstack_linked_list_iterator_t it; 4427 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4428 while (btstack_linked_list_iterator_has_next(&it)){ 4429 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4430 if (iso_stream->group_id == big->big_handle){ 4431 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4432 btstack_linked_list_iterator_remove(&it); 4433 btstack_memory_hci_iso_stream_free(iso_stream); 4434 } 4435 } 4436 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4437 switch (big->state){ 4438 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4439 hci_emit_big_created(big, big->state_vars.status); 4440 break; 4441 default: 4442 hci_emit_big_terminated(big); 4443 break; 4444 } 4445 } 4446 break; 4447 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4448 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4449 big_sync = hci_big_sync_for_handle(packet[4]); 4450 if (big_sync != NULL){ 4451 uint8_t status = packet[3]; 4452 uint8_t big_handle = packet[4]; 4453 if (status == ERROR_CODE_SUCCESS){ 4454 // store bis_con_handles and trigger iso path setup 4455 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4456 uint8_t i; 4457 for (i=0;i<num_bis;i++){ 4458 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4459 } 4460 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4461 // trigger iso path setup 4462 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4463 big_sync->state_vars.next_bis = 0; 4464 } 4465 } else { 4466 // create BIG Sync failed or has been stopped by us 4467 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4468 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4469 hci_emit_big_sync_created(big_sync, status); 4470 } else { 4471 hci_emit_big_sync_stopped(big_handle); 4472 } 4473 } 4474 } 4475 break; 4476 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4477 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4478 big_sync = hci_big_sync_for_handle(packet[4]); 4479 if (big_sync != NULL){ 4480 uint8_t big_handle = packet[4]; 4481 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4482 hci_emit_big_sync_stopped(big_handle); 4483 } 4484 break; 4485 #endif 4486 default: 4487 break; 4488 } 4489 break; 4490 #endif 4491 case HCI_EVENT_VENDOR_SPECIFIC: 4492 // Vendor specific commands often create vendor specific event instead of num completed packets 4493 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4494 switch (hci_stack->manufacturer){ 4495 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4496 hci_stack->num_cmd_packets = 1; 4497 break; 4498 default: 4499 break; 4500 } 4501 break; 4502 default: 4503 break; 4504 } 4505 4506 handle_event_for_current_stack_state(packet, size); 4507 4508 // notify upper stack 4509 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4510 4511 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4512 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4513 handle = little_endian_read_16(packet, 3); 4514 hci_connection_t * aConn = hci_connection_for_handle(handle); 4515 // discard connection if app did not trigger a reconnect in the event handler 4516 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4517 hci_shutdown_connection(aConn); 4518 } 4519 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4520 hci_controller_dump_packets(); 4521 #endif 4522 } 4523 4524 // execute main loop 4525 hci_run(); 4526 } 4527 4528 #ifdef ENABLE_CLASSIC 4529 4530 static void sco_handler(uint8_t * packet, uint16_t size){ 4531 // lookup connection struct 4532 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4533 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4534 if (!conn) return; 4535 4536 #ifdef ENABLE_SCO_OVER_HCI 4537 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4538 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4539 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4540 packet[2] = 0x3c; 4541 memmove(&packet[3], &packet[23], 63); 4542 size = 63; 4543 } 4544 } 4545 4546 if (hci_have_usb_transport()){ 4547 // Nothing to do 4548 } else { 4549 // 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); 4550 if (hci_stack->synchronous_flow_control_enabled == 0){ 4551 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4552 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4553 if (conn->sco_tx_active == 0){ 4554 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4555 conn->sco_tx_active = 1; 4556 conn->sco_tx_ready = max_sco_packets; 4557 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4558 hci_notify_if_sco_can_send_now(); 4559 } 4560 } else { 4561 if (conn->sco_tx_ready < max_sco_packets){ 4562 conn->sco_tx_ready++; 4563 } 4564 hci_notify_if_sco_can_send_now(); 4565 } 4566 } 4567 } 4568 #endif 4569 4570 // deliver to app 4571 if (hci_stack->sco_packet_handler) { 4572 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4573 } 4574 4575 #ifdef HAVE_SCO_TRANSPORT 4576 // We can send one packet for each received packet 4577 conn->sco_tx_ready++; 4578 hci_notify_if_sco_can_send_now(); 4579 #endif 4580 4581 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4582 conn->num_packets_completed++; 4583 hci_stack->host_completed_packets = 1; 4584 hci_run(); 4585 #endif 4586 } 4587 #endif 4588 4589 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4590 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4591 // propagate ISO packets received as ACL 4592 hci_iso_stream_t * iso_stream; 4593 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4594 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4595 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4596 if (iso_stream != NULL){ 4597 packet_type = HCI_ISO_DATA_PACKET; 4598 } 4599 } 4600 #endif 4601 4602 hci_dump_packet(packet_type, 1, packet, size); 4603 switch (packet_type) { 4604 case HCI_EVENT_PACKET: 4605 event_handler(packet, size); 4606 break; 4607 case HCI_ACL_DATA_PACKET: 4608 acl_handler(packet, size); 4609 break; 4610 #ifdef ENABLE_CLASSIC 4611 case HCI_SCO_DATA_PACKET: 4612 sco_handler(packet, size); 4613 break; 4614 #endif 4615 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4616 case HCI_ISO_DATA_PACKET: 4617 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4618 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4619 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4620 } 4621 hci_iso_packet_handler(iso_stream, packet, size); 4622 break; 4623 #endif 4624 default: 4625 break; 4626 } 4627 } 4628 4629 /** 4630 * @brief Add event packet handler. 4631 */ 4632 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4633 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4634 } 4635 4636 /** 4637 * @brief Remove event packet handler. 4638 */ 4639 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4640 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4641 } 4642 4643 /** Register HCI packet handlers */ 4644 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4645 hci_stack->acl_packet_handler = handler; 4646 } 4647 4648 #ifdef ENABLE_CLASSIC 4649 /** 4650 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4651 */ 4652 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4653 hci_stack->sco_packet_handler = handler; 4654 } 4655 #endif 4656 4657 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4658 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4659 hci_stack->iso_packet_handler = handler; 4660 } 4661 #endif 4662 4663 static void hci_state_reset(void){ 4664 // no connections yet 4665 hci_stack->connections = NULL; 4666 4667 // keep discoverable/connectable as this has been requested by the client(s) 4668 // hci_stack->discoverable = 0; 4669 // hci_stack->connectable = 0; 4670 // hci_stack->bondable = 1; 4671 // hci_stack->own_addr_type = 0; 4672 4673 // buffer is free 4674 hci_stack->hci_packet_buffer_reserved = false; 4675 4676 // no pending cmds 4677 hci_stack->decline_reason = 0; 4678 4679 hci_stack->secure_connections_active = false; 4680 4681 #ifdef ENABLE_CLASSIC 4682 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4683 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4684 4685 hci_stack->gap_tasks_classic = 4686 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4687 GAP_TASK_SET_CLASS_OF_DEVICE | 4688 GAP_TASK_SET_LOCAL_NAME | 4689 GAP_TASK_SET_EIR_DATA | 4690 GAP_TASK_WRITE_SCAN_ENABLE | 4691 GAP_TASK_WRITE_PAGE_TIMEOUT; 4692 #endif 4693 4694 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4695 hci_stack->classic_read_local_oob_data = false; 4696 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4697 #endif 4698 4699 // LE 4700 #ifdef ENABLE_BLE 4701 memset(hci_stack->le_random_address, 0, 6); 4702 hci_stack->le_random_address_set = 0; 4703 #endif 4704 #ifdef ENABLE_LE_CENTRAL 4705 hci_stack->le_scanning_active = false; 4706 hci_stack->le_scanning_param_update = true; 4707 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4708 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4709 hci_stack->le_whitelist_capacity = 0; 4710 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4711 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4712 #endif 4713 #endif 4714 #ifdef ENABLE_LE_PERIPHERAL 4715 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4716 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4717 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4718 } 4719 if (hci_stack->le_advertisements_data != NULL){ 4720 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4721 } 4722 #endif 4723 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4724 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4725 #endif 4726 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4727 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4728 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4729 #endif 4730 } 4731 4732 #ifdef ENABLE_CLASSIC 4733 /** 4734 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4735 */ 4736 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4737 // store and open remote device db 4738 hci_stack->link_key_db = link_key_db; 4739 if (hci_stack->link_key_db) { 4740 hci_stack->link_key_db->open(); 4741 } 4742 } 4743 #endif 4744 4745 void hci_init(const hci_transport_t *transport, const void *config){ 4746 4747 #ifdef HAVE_MALLOC 4748 if (!hci_stack) { 4749 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4750 } 4751 #else 4752 hci_stack = &hci_stack_static; 4753 #endif 4754 memset(hci_stack, 0, sizeof(hci_stack_t)); 4755 4756 // reference to use transport layer implementation 4757 hci_stack->hci_transport = transport; 4758 4759 // reference to used config 4760 hci_stack->config = config; 4761 4762 // setup pointer for outgoing packet buffer 4763 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4764 4765 // max acl payload size defined in config.h 4766 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4767 4768 // register packet handlers with transport 4769 transport->register_packet_handler(&packet_handler); 4770 4771 hci_stack->state = HCI_STATE_OFF; 4772 4773 // class of device 4774 hci_stack->class_of_device = 0x007a020c; // Smartphone 4775 4776 // bondable by default 4777 hci_stack->bondable = 1; 4778 4779 #ifdef ENABLE_CLASSIC 4780 // classic name 4781 hci_stack->local_name = default_classic_name; 4782 4783 // Master slave policy 4784 hci_stack->master_slave_policy = 1; 4785 4786 // Allow Role Switch 4787 hci_stack->allow_role_switch = 1; 4788 4789 // Default / minimum security level = 2 4790 hci_stack->gap_security_level = LEVEL_2; 4791 4792 // Default Security Mode 4 4793 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4794 4795 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4796 hci_stack->gap_required_encyrption_key_size = 7; 4797 4798 // Link Supervision Timeout 4799 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4800 4801 #endif 4802 4803 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4804 hci_stack->ssp_enable = 1; 4805 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4806 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4807 hci_stack->ssp_auto_accept = 1; 4808 4809 // Secure Connections: enable (requires support from Controller) 4810 hci_stack->secure_connections_enable = true; 4811 4812 // voice setting - signed 16 bit pcm data with CVSD over the air 4813 hci_stack->sco_voice_setting = 0x60; 4814 4815 #ifdef ENABLE_BLE 4816 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4817 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4818 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4819 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4820 hci_stack->le_connection_latency = 4; // 4 4821 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4822 hci_stack->le_minimum_ce_length = 0; // 0 ms 4823 hci_stack->le_maximum_ce_length = 0; // 0 ms 4824 #endif 4825 4826 #ifdef ENABLE_LE_CENTRAL 4827 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4828 4829 // default LE Scanning 4830 hci_stack->le_scan_type = 0x01; // active 4831 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4832 hci_stack->le_scan_window = 0x30; // 30 ms 4833 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4834 #endif 4835 4836 #ifdef ENABLE_LE_PERIPHERAL 4837 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4838 4839 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4840 hci_stack->le_advertisements_interval_min = 0x0800; 4841 hci_stack->le_advertisements_interval_max = 0x0800; 4842 hci_stack->le_advertisements_type = 0; 4843 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4844 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4845 hci_stack->le_advertisements_channel_map = 0x07; 4846 hci_stack->le_advertisements_filter_policy = 0; 4847 #endif 4848 4849 // connection parameter range used to answer connection parameter update requests in l2cap 4850 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4851 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4852 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4853 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4854 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4855 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4856 4857 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4858 hci_stack->iso_packets_to_queue = 1; 4859 #endif 4860 4861 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4862 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4863 #endif 4864 4865 hci_state_reset(); 4866 } 4867 4868 void hci_deinit(void){ 4869 btstack_run_loop_remove_timer(&hci_stack->timeout); 4870 #ifdef HAVE_MALLOC 4871 if (hci_stack) { 4872 free(hci_stack); 4873 } 4874 #endif 4875 hci_stack = NULL; 4876 4877 #ifdef ENABLE_CLASSIC 4878 disable_l2cap_timeouts = 0; 4879 #endif 4880 } 4881 4882 /** 4883 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4884 */ 4885 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4886 hci_stack->chipset = chipset_driver; 4887 4888 // reset chipset driver - init is also called on power_up 4889 if (hci_stack->chipset && hci_stack->chipset->init){ 4890 hci_stack->chipset->init(hci_stack->config); 4891 } 4892 } 4893 4894 void hci_enable_custom_pre_init(void){ 4895 hci_stack->chipset_pre_init = true; 4896 } 4897 4898 /** 4899 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4900 */ 4901 void hci_set_control(const btstack_control_t *hardware_control){ 4902 // references to used control implementation 4903 hci_stack->control = hardware_control; 4904 // init with transport config 4905 hardware_control->init(hci_stack->config); 4906 } 4907 4908 static void hci_discard_connections(void){ 4909 btstack_linked_list_iterator_t it; 4910 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4911 while (btstack_linked_list_iterator_has_next(&it)){ 4912 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4913 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4914 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4915 hci_shutdown_connection(connection); 4916 } 4917 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4918 while (hci_stack->iso_streams != NULL){ 4919 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4920 } 4921 #endif 4922 } 4923 4924 void hci_close(void){ 4925 4926 #ifdef ENABLE_CLASSIC 4927 // close remote device db 4928 if (hci_stack->link_key_db) { 4929 hci_stack->link_key_db->close(); 4930 } 4931 #endif 4932 4933 hci_discard_connections(); 4934 4935 hci_power_control(HCI_POWER_OFF); 4936 4937 #ifdef HAVE_MALLOC 4938 free(hci_stack); 4939 #endif 4940 hci_stack = NULL; 4941 } 4942 4943 #ifdef HAVE_SCO_TRANSPORT 4944 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4945 hci_stack->sco_transport = sco_transport; 4946 sco_transport->register_packet_handler(&packet_handler); 4947 } 4948 #endif 4949 4950 #ifdef ENABLE_CLASSIC 4951 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4952 // validate ranage and set 4953 if (encryption_key_size < 7) return; 4954 if (encryption_key_size > 16) return; 4955 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4956 } 4957 4958 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4959 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4960 hci_stack->gap_security_mode = security_mode; 4961 return ERROR_CODE_SUCCESS; 4962 } else { 4963 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4964 } 4965 } 4966 4967 gap_security_mode_t gap_get_security_mode(void){ 4968 return hci_stack->gap_security_mode; 4969 } 4970 4971 void gap_set_security_level(gap_security_level_t security_level){ 4972 hci_stack->gap_security_level = security_level; 4973 } 4974 4975 gap_security_level_t gap_get_security_level(void){ 4976 if (hci_stack->gap_secure_connections_only_mode){ 4977 return LEVEL_4; 4978 } 4979 return hci_stack->gap_security_level; 4980 } 4981 4982 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4983 hci_stack->gap_minimal_service_security_level = security_level; 4984 } 4985 4986 void gap_set_secure_connections_only_mode(bool enable){ 4987 hci_stack->gap_secure_connections_only_mode = enable; 4988 } 4989 4990 bool gap_get_secure_connections_only_mode(void){ 4991 return hci_stack->gap_secure_connections_only_mode; 4992 } 4993 #endif 4994 4995 #ifdef ENABLE_CLASSIC 4996 void gap_set_class_of_device(uint32_t class_of_device){ 4997 hci_stack->class_of_device = class_of_device; 4998 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4999 hci_run(); 5000 } 5001 5002 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5003 hci_stack->default_link_policy_settings = default_link_policy_settings; 5004 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5005 hci_run(); 5006 } 5007 5008 void gap_set_allow_role_switch(bool allow_role_switch){ 5009 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5010 } 5011 5012 uint8_t hci_get_allow_role_switch(void){ 5013 return hci_stack->allow_role_switch; 5014 } 5015 5016 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5017 hci_stack->link_supervision_timeout = link_supervision_timeout; 5018 } 5019 5020 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5021 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5022 } 5023 5024 uint16_t hci_automatic_flush_timeout(void){ 5025 return hci_stack->automatic_flush_timeout; 5026 } 5027 5028 void hci_disable_l2cap_timeout_check(void){ 5029 disable_l2cap_timeouts = 1; 5030 } 5031 #endif 5032 5033 #ifndef HAVE_HOST_CONTROLLER_API 5034 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5035 void hci_set_bd_addr(bd_addr_t addr){ 5036 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5037 hci_stack->custom_bd_addr_set = 1; 5038 } 5039 #endif 5040 5041 // State-Module-Driver overview 5042 // state module low-level 5043 // HCI_STATE_OFF off close 5044 // HCI_STATE_INITIALIZING, on open 5045 // HCI_STATE_WORKING, on open 5046 // HCI_STATE_HALTING, on open 5047 // HCI_STATE_SLEEPING, off/sleep close 5048 // HCI_STATE_FALLING_ASLEEP on open 5049 5050 static int hci_power_control_on(void){ 5051 5052 // power on 5053 int err = 0; 5054 if (hci_stack->control && hci_stack->control->on){ 5055 err = (*hci_stack->control->on)(); 5056 } 5057 if (err){ 5058 log_error( "POWER_ON failed"); 5059 hci_emit_hci_open_failed(); 5060 return err; 5061 } 5062 5063 // int chipset driver 5064 if (hci_stack->chipset && hci_stack->chipset->init){ 5065 hci_stack->chipset->init(hci_stack->config); 5066 } 5067 5068 // init transport 5069 if (hci_stack->hci_transport->init){ 5070 hci_stack->hci_transport->init(hci_stack->config); 5071 } 5072 5073 // open transport 5074 err = hci_stack->hci_transport->open(); 5075 if (err){ 5076 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5077 if (hci_stack->control && hci_stack->control->off){ 5078 (*hci_stack->control->off)(); 5079 } 5080 hci_emit_hci_open_failed(); 5081 return err; 5082 } 5083 return 0; 5084 } 5085 5086 static void hci_power_control_off(void){ 5087 5088 log_info("hci_power_control_off"); 5089 5090 // close low-level device 5091 hci_stack->hci_transport->close(); 5092 5093 log_info("hci_power_control_off - hci_transport closed"); 5094 5095 // power off 5096 if (hci_stack->control && hci_stack->control->off){ 5097 (*hci_stack->control->off)(); 5098 } 5099 5100 log_info("hci_power_control_off - control closed"); 5101 5102 hci_stack->state = HCI_STATE_OFF; 5103 } 5104 5105 static void hci_power_control_sleep(void){ 5106 5107 log_info("hci_power_control_sleep"); 5108 5109 #if 0 5110 // don't close serial port during sleep 5111 5112 // close low-level device 5113 hci_stack->hci_transport->close(hci_stack->config); 5114 #endif 5115 5116 // sleep mode 5117 if (hci_stack->control && hci_stack->control->sleep){ 5118 (*hci_stack->control->sleep)(); 5119 } 5120 5121 hci_stack->state = HCI_STATE_SLEEPING; 5122 } 5123 5124 static int hci_power_control_wake(void){ 5125 5126 log_info("hci_power_control_wake"); 5127 5128 // wake on 5129 if (hci_stack->control && hci_stack->control->wake){ 5130 (*hci_stack->control->wake)(); 5131 } 5132 5133 #if 0 5134 // open low-level device 5135 int err = hci_stack->hci_transport->open(hci_stack->config); 5136 if (err){ 5137 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5138 if (hci_stack->control && hci_stack->control->off){ 5139 (*hci_stack->control->off)(); 5140 } 5141 hci_emit_hci_open_failed(); 5142 return err; 5143 } 5144 #endif 5145 5146 return 0; 5147 } 5148 5149 static void hci_power_enter_initializing_state(void){ 5150 // set up state machine 5151 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5152 hci_stack->hci_packet_buffer_reserved = false; 5153 hci_stack->state = HCI_STATE_INITIALIZING; 5154 5155 #ifndef HAVE_HOST_CONTROLLER_API 5156 if (hci_stack->chipset_pre_init) { 5157 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5158 } else 5159 #endif 5160 { 5161 hci_stack->substate = HCI_INIT_SEND_RESET; 5162 } 5163 } 5164 5165 static void hci_power_enter_halting_state(void){ 5166 #ifdef ENABLE_BLE 5167 // drop entries scheduled for removal, mark others for re-adding 5168 btstack_linked_list_iterator_t it; 5169 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5170 while (btstack_linked_list_iterator_has_next(&it)){ 5171 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5172 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5173 btstack_linked_list_iterator_remove(&it); 5174 btstack_memory_whitelist_entry_free(entry); 5175 } else { 5176 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5177 } 5178 } 5179 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5180 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5181 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5182 while (btstack_linked_list_iterator_has_next(&it)){ 5183 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5184 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5185 btstack_linked_list_iterator_remove(&it); 5186 btstack_memory_periodic_advertiser_list_entry_free(entry); 5187 } else { 5188 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5189 continue; 5190 } 5191 } 5192 #endif 5193 #endif 5194 // see hci_run 5195 hci_stack->state = HCI_STATE_HALTING; 5196 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5197 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5198 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5199 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5200 btstack_run_loop_add_timer(&hci_stack->timeout); 5201 } 5202 5203 // returns error 5204 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5205 int err; 5206 switch (power_mode){ 5207 case HCI_POWER_ON: 5208 err = hci_power_control_on(); 5209 if (err != 0) { 5210 log_error("hci_power_control_on() error %d", err); 5211 return err; 5212 } 5213 hci_power_enter_initializing_state(); 5214 break; 5215 case HCI_POWER_OFF: 5216 // do nothing 5217 break; 5218 case HCI_POWER_SLEEP: 5219 // do nothing (with SLEEP == OFF) 5220 break; 5221 default: 5222 btstack_assert(false); 5223 break; 5224 } 5225 return ERROR_CODE_SUCCESS; 5226 } 5227 5228 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5229 switch (power_mode){ 5230 case HCI_POWER_ON: 5231 // do nothing 5232 break; 5233 case HCI_POWER_OFF: 5234 // no connections yet, just turn it off 5235 hci_power_control_off(); 5236 break; 5237 case HCI_POWER_SLEEP: 5238 // no connections yet, just turn it off 5239 hci_power_control_sleep(); 5240 break; 5241 default: 5242 btstack_assert(false); 5243 break; 5244 } 5245 return ERROR_CODE_SUCCESS; 5246 } 5247 5248 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5249 switch (power_mode){ 5250 case HCI_POWER_ON: 5251 // do nothing 5252 break; 5253 case HCI_POWER_OFF: 5254 hci_power_enter_halting_state(); 5255 break; 5256 case HCI_POWER_SLEEP: 5257 // see hci_run 5258 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5259 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5260 break; 5261 default: 5262 btstack_assert(false); 5263 break; 5264 } 5265 return ERROR_CODE_SUCCESS; 5266 } 5267 5268 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5269 switch (power_mode){ 5270 case HCI_POWER_ON: 5271 hci_power_enter_initializing_state(); 5272 break; 5273 case HCI_POWER_OFF: 5274 // do nothing 5275 break; 5276 case HCI_POWER_SLEEP: 5277 // see hci_run 5278 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5279 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5280 break; 5281 default: 5282 btstack_assert(false); 5283 break; 5284 } 5285 return ERROR_CODE_SUCCESS; 5286 } 5287 5288 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5289 switch (power_mode){ 5290 case HCI_POWER_ON: 5291 hci_power_enter_initializing_state(); 5292 break; 5293 case HCI_POWER_OFF: 5294 hci_power_enter_halting_state(); 5295 break; 5296 case HCI_POWER_SLEEP: 5297 // do nothing 5298 break; 5299 default: 5300 btstack_assert(false); 5301 break; 5302 } 5303 return ERROR_CODE_SUCCESS; 5304 } 5305 5306 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5307 int err; 5308 switch (power_mode){ 5309 case HCI_POWER_ON: 5310 err = hci_power_control_wake(); 5311 if (err) return err; 5312 hci_power_enter_initializing_state(); 5313 break; 5314 case HCI_POWER_OFF: 5315 hci_power_enter_halting_state(); 5316 break; 5317 case HCI_POWER_SLEEP: 5318 // do nothing 5319 break; 5320 default: 5321 btstack_assert(false); 5322 break; 5323 } 5324 return ERROR_CODE_SUCCESS; 5325 } 5326 5327 int hci_power_control(HCI_POWER_MODE power_mode){ 5328 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5329 btstack_run_loop_remove_timer(&hci_stack->timeout); 5330 int err = 0; 5331 switch (hci_stack->state){ 5332 case HCI_STATE_OFF: 5333 err = hci_power_control_state_off(power_mode); 5334 break; 5335 case HCI_STATE_INITIALIZING: 5336 err = hci_power_control_state_initializing(power_mode); 5337 break; 5338 case HCI_STATE_WORKING: 5339 err = hci_power_control_state_working(power_mode); 5340 break; 5341 case HCI_STATE_HALTING: 5342 err = hci_power_control_state_halting(power_mode); 5343 break; 5344 case HCI_STATE_FALLING_ASLEEP: 5345 err = hci_power_control_state_falling_asleep(power_mode); 5346 break; 5347 case HCI_STATE_SLEEPING: 5348 err = hci_power_control_state_sleeping(power_mode); 5349 break; 5350 default: 5351 btstack_assert(false); 5352 break; 5353 } 5354 if (err != 0){ 5355 return err; 5356 } 5357 5358 // create internal event 5359 hci_emit_state(); 5360 5361 // trigger next/first action 5362 hci_run(); 5363 5364 return 0; 5365 } 5366 5367 5368 static void hci_halting_run(void) { 5369 5370 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5371 5372 hci_connection_t *connection; 5373 #ifdef ENABLE_BLE 5374 #ifdef ENABLE_LE_PERIPHERAL 5375 bool stop_advertismenets; 5376 #endif 5377 #endif 5378 5379 switch (hci_stack->substate) { 5380 case HCI_HALTING_CLASSIC_STOP: 5381 #ifdef ENABLE_CLASSIC 5382 if (!hci_can_send_command_packet_now()) return; 5383 5384 if (hci_stack->connectable || hci_stack->discoverable){ 5385 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5386 hci_send_cmd(&hci_write_scan_enable, 0); 5387 return; 5388 } 5389 #endif 5390 /* fall through */ 5391 5392 case HCI_HALTING_LE_ADV_STOP: 5393 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5394 5395 #ifdef ENABLE_BLE 5396 #ifdef ENABLE_LE_PERIPHERAL 5397 if (!hci_can_send_command_packet_now()) return; 5398 5399 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5400 5401 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5402 if (hci_extended_advertising_supported()){ 5403 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5404 btstack_linked_list_iterator_t it; 5405 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5406 // stop all periodic advertisements and check if an extended set is active 5407 while (btstack_linked_list_iterator_has_next(&it)){ 5408 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5409 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5410 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5411 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5412 return; 5413 } 5414 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5415 stop_advertismenets = true; 5416 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5417 } 5418 } 5419 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5420 if (stop_advertismenets){ 5421 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5422 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5423 return; 5424 } 5425 } else 5426 #else /* ENABLE_LE_PERIPHERAL */ 5427 { 5428 if (stop_advertismenets) { 5429 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5430 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5431 return; 5432 } 5433 } 5434 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5435 #endif /* ENABLE_LE_PERIPHERAL */ 5436 #endif /* ENABLE_BLE */ 5437 5438 /* fall through */ 5439 5440 case HCI_HALTING_LE_SCAN_STOP: 5441 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5442 if (!hci_can_send_command_packet_now()) return; 5443 5444 #ifdef ENABLE_BLE 5445 #ifdef ENABLE_LE_CENTRAL 5446 if (hci_stack->le_scanning_active){ 5447 hci_le_scan_stop(); 5448 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5449 return; 5450 } 5451 #endif 5452 #endif 5453 5454 /* fall through */ 5455 5456 case HCI_HALTING_DISCONNECT_ALL: 5457 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5458 if (!hci_can_send_command_packet_now()) return; 5459 5460 // close all open connections 5461 connection = (hci_connection_t *) hci_stack->connections; 5462 if (connection) { 5463 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5464 5465 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5466 5467 // check state 5468 switch(connection->state) { 5469 case SENT_DISCONNECT: 5470 case RECEIVED_DISCONNECTION_COMPLETE: 5471 // wait until connection is gone 5472 return; 5473 default: 5474 break; 5475 } 5476 5477 // finally, send the disconnect command 5478 connection->state = SENT_DISCONNECT; 5479 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5480 return; 5481 } 5482 5483 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5484 // stop BIGs and BIG Syncs 5485 if (hci_stack->le_audio_bigs != NULL){ 5486 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5487 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5488 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5489 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5490 return; 5491 } 5492 if (hci_stack->le_audio_big_syncs != NULL){ 5493 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5494 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5495 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5496 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5497 return; 5498 } 5499 #endif 5500 5501 btstack_run_loop_remove_timer(&hci_stack->timeout); 5502 5503 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5504 log_info("HCI_STATE_HALTING: wait 50 ms"); 5505 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5506 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5507 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5508 btstack_run_loop_add_timer(&hci_stack->timeout); 5509 break; 5510 5511 case HCI_HALTING_W4_CLOSE_TIMER: 5512 // keep waiting 5513 break; 5514 5515 case HCI_HALTING_CLOSE: 5516 // close left over connections (that had not been properly closed before) 5517 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5518 hci_discard_connections(); 5519 5520 log_info("HCI_STATE_HALTING, calling off"); 5521 5522 // switch mode 5523 hci_power_control_off(); 5524 5525 log_info("HCI_STATE_HALTING, emitting state"); 5526 hci_emit_state(); 5527 log_info("HCI_STATE_HALTING, done"); 5528 break; 5529 5530 default: 5531 break; 5532 } 5533 }; 5534 5535 static void hci_falling_asleep_run(void){ 5536 hci_connection_t * connection; 5537 switch(hci_stack->substate) { 5538 case HCI_FALLING_ASLEEP_DISCONNECT: 5539 log_info("HCI_STATE_FALLING_ASLEEP"); 5540 // close all open connections 5541 connection = (hci_connection_t *) hci_stack->connections; 5542 if (connection){ 5543 5544 // send disconnect 5545 if (!hci_can_send_command_packet_now()) return; 5546 5547 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5548 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5549 5550 // send disconnected event right away - causes higher layer connections to get closed, too. 5551 hci_shutdown_connection(connection); 5552 return; 5553 } 5554 5555 if (hci_classic_supported()){ 5556 // disable page and inquiry scan 5557 if (!hci_can_send_command_packet_now()) return; 5558 5559 log_info("HCI_STATE_HALTING, disabling inq scans"); 5560 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5561 5562 // continue in next sub state 5563 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5564 break; 5565 } 5566 5567 /* fall through */ 5568 5569 case HCI_FALLING_ASLEEP_COMPLETE: 5570 log_info("HCI_STATE_HALTING, calling sleep"); 5571 // switch mode 5572 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5573 hci_emit_state(); 5574 break; 5575 5576 default: 5577 break; 5578 } 5579 } 5580 5581 #ifdef ENABLE_CLASSIC 5582 5583 static void hci_update_scan_enable(void){ 5584 // 2 = page scan, 1 = inq scan 5585 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5586 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5587 hci_run(); 5588 } 5589 5590 void gap_discoverable_control(uint8_t enable){ 5591 if (enable) enable = 1; // normalize argument 5592 5593 if (hci_stack->discoverable == enable){ 5594 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5595 return; 5596 } 5597 5598 hci_stack->discoverable = enable; 5599 hci_update_scan_enable(); 5600 } 5601 5602 void gap_connectable_control(uint8_t enable){ 5603 if (enable) enable = 1; // normalize argument 5604 5605 // don't emit event 5606 if (hci_stack->connectable == enable) return; 5607 5608 hci_stack->connectable = enable; 5609 hci_update_scan_enable(); 5610 } 5611 #endif 5612 5613 void gap_local_bd_addr(bd_addr_t address_buffer){ 5614 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5615 } 5616 5617 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5618 static void hci_host_num_completed_packets(void){ 5619 5620 // create packet manually as arrays are not supported and num_commands should not get reduced 5621 hci_reserve_packet_buffer(); 5622 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5623 5624 uint16_t size = 0; 5625 uint16_t num_handles = 0; 5626 packet[size++] = 0x35; 5627 packet[size++] = 0x0c; 5628 size++; // skip param len 5629 size++; // skip num handles 5630 5631 // add { handle, packets } entries 5632 btstack_linked_item_t * it; 5633 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5634 hci_connection_t * connection = (hci_connection_t *) it; 5635 if (connection->num_packets_completed){ 5636 little_endian_store_16(packet, size, connection->con_handle); 5637 size += 2; 5638 little_endian_store_16(packet, size, connection->num_packets_completed); 5639 size += 2; 5640 // 5641 num_handles++; 5642 connection->num_packets_completed = 0; 5643 } 5644 } 5645 5646 packet[2] = size - 3; 5647 packet[3] = num_handles; 5648 5649 hci_stack->host_completed_packets = 0; 5650 5651 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5652 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5653 5654 // release packet buffer for synchronous transport implementations 5655 if (hci_transport_synchronous()){ 5656 hci_release_packet_buffer(); 5657 hci_emit_transport_packet_sent(); 5658 } 5659 } 5660 #endif 5661 5662 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5663 UNUSED(ds); 5664 hci_stack->substate = HCI_HALTING_CLOSE; 5665 hci_halting_run(); 5666 } 5667 5668 static bool hci_run_acl_fragments(void){ 5669 if (hci_stack->acl_fragmentation_total_size > 0u) { 5670 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5671 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5672 if (connection) { 5673 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5674 hci_send_acl_packet_fragments(connection); 5675 return true; 5676 } 5677 } else { 5678 // connection gone -> discard further fragments 5679 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5680 hci_stack->acl_fragmentation_total_size = 0; 5681 hci_stack->acl_fragmentation_pos = 0; 5682 } 5683 } 5684 return false; 5685 } 5686 5687 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5688 static bool hci_run_iso_fragments(void){ 5689 if (hci_stack->iso_fragmentation_total_size > 0u) { 5690 // TODO: flow control 5691 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5692 hci_send_iso_packet_fragments(); 5693 return true; 5694 } 5695 } 5696 return false; 5697 } 5698 #endif 5699 5700 #ifdef ENABLE_CLASSIC 5701 5702 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5703 static bool hci_classic_operation_active(void) { 5704 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5705 return true; 5706 } 5707 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5708 return true; 5709 } 5710 btstack_linked_item_t * it; 5711 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5712 hci_connection_t *connection = (hci_connection_t *) it; 5713 switch (connection->state) { 5714 case SENT_CREATE_CONNECTION: 5715 case SENT_CANCEL_CONNECTION: 5716 case SENT_DISCONNECT: 5717 return true; 5718 default: 5719 break; 5720 } 5721 } 5722 return false; 5723 } 5724 #endif 5725 5726 static bool hci_run_general_gap_classic(void){ 5727 5728 // assert stack is working and classic is active 5729 if (hci_classic_supported() == false) return false; 5730 if (hci_stack->state != HCI_STATE_WORKING) return false; 5731 5732 // decline incoming connections 5733 if (hci_stack->decline_reason){ 5734 uint8_t reason = hci_stack->decline_reason; 5735 hci_stack->decline_reason = 0; 5736 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5737 return true; 5738 } 5739 5740 if (hci_stack->gap_tasks_classic != 0){ 5741 hci_run_gap_tasks_classic(); 5742 return true; 5743 } 5744 5745 // start/stop inquiry 5746 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5747 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5748 if (hci_classic_operation_active() == false) 5749 #endif 5750 { 5751 uint8_t duration = hci_stack->inquiry_state; 5752 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5753 if (hci_stack->inquiry_max_period_length != 0){ 5754 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); 5755 } else { 5756 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5757 } 5758 return true; 5759 } 5760 } 5761 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5762 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5763 hci_send_cmd(&hci_inquiry_cancel); 5764 return true; 5765 } 5766 5767 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5768 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5769 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5770 return true; 5771 } 5772 5773 // remote name request 5774 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5775 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5776 if (hci_classic_operation_active() == false) 5777 #endif 5778 { 5779 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5780 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5781 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5782 return true; 5783 } 5784 } 5785 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5786 // Local OOB data 5787 if (hci_stack->classic_read_local_oob_data){ 5788 hci_stack->classic_read_local_oob_data = false; 5789 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5790 hci_send_cmd(&hci_read_local_extended_oob_data); 5791 } else { 5792 hci_send_cmd(&hci_read_local_oob_data); 5793 } 5794 } 5795 #endif 5796 // pairing 5797 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5798 uint8_t state = hci_stack->gap_pairing_state; 5799 uint8_t pin_code[PIN_CODE_LEN]; 5800 switch (state){ 5801 case GAP_PAIRING_STATE_SEND_PIN: 5802 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5803 memset(pin_code, 0, 16); 5804 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5805 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5806 break; 5807 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5808 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5809 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5810 break; 5811 case GAP_PAIRING_STATE_SEND_PASSKEY: 5812 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5813 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5814 break; 5815 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5816 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5817 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5818 break; 5819 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5820 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5821 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5822 break; 5823 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5824 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5825 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5826 break; 5827 default: 5828 break; 5829 } 5830 return true; 5831 } 5832 return false; 5833 } 5834 #endif 5835 5836 #ifdef ENABLE_BLE 5837 5838 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5839 static uint8_t hci_le_num_phys(uint8_t phys){ 5840 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5841 btstack_assert(phys); 5842 return num_bits_set[phys]; 5843 } 5844 #endif 5845 5846 #ifdef ENABLE_LE_CENTRAL 5847 static void hci_le_scan_stop(void){ 5848 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5849 if (hci_extended_advertising_supported()) { 5850 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5851 } else 5852 #endif 5853 { 5854 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5855 } 5856 } 5857 5858 static void 5859 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5860 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5861 if (hci_extended_advertising_supported()) { 5862 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5863 uint16_t le_connection_scan_interval[3]; 5864 uint16_t le_connection_scan_window[3]; 5865 uint16_t le_connection_interval_min[3]; 5866 uint16_t le_connection_interval_max[3]; 5867 uint16_t le_connection_latency[3]; 5868 uint16_t le_supervision_timeout[3]; 5869 uint16_t le_minimum_ce_length[3]; 5870 uint16_t le_maximum_ce_length[3]; 5871 5872 uint8_t i; 5873 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5874 for (i=0;i<num_phys;i++){ 5875 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5876 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5877 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5878 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5879 le_connection_latency[i] = hci_stack->le_connection_latency; 5880 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5881 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5882 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5883 } 5884 hci_send_cmd(&hci_le_extended_create_connection, 5885 initiator_filter_policy, 5886 hci_stack->le_connection_own_addr_type, // our addr type: 5887 address_type, // peer address type 5888 address, // peer bd addr 5889 hci_stack->le_connection_phys, // initiating PHY 5890 le_connection_scan_interval, // conn scan interval 5891 le_connection_scan_window, // conn scan windows 5892 le_connection_interval_min, // conn interval min 5893 le_connection_interval_max, // conn interval max 5894 le_connection_latency, // conn latency 5895 le_supervision_timeout, // conn latency 5896 le_minimum_ce_length, // min ce length 5897 le_maximum_ce_length // max ce length 5898 ); 5899 } else 5900 #endif 5901 { 5902 hci_send_cmd(&hci_le_create_connection, 5903 hci_stack->le_connection_scan_interval, // conn scan interval 5904 hci_stack->le_connection_scan_window, // conn scan windows 5905 initiator_filter_policy, // don't use whitelist 5906 address_type, // peer address type 5907 address, // peer bd addr 5908 hci_stack->le_connection_own_addr_type, // our addr type: 5909 hci_stack->le_connection_interval_min, // conn interval min 5910 hci_stack->le_connection_interval_max, // conn interval max 5911 hci_stack->le_connection_latency, // conn latency 5912 hci_stack->le_supervision_timeout, // conn latency 5913 hci_stack->le_minimum_ce_length, // min ce length 5914 hci_stack->le_maximum_ce_length // max ce length 5915 ); 5916 } 5917 } 5918 #endif 5919 5920 #ifdef ENABLE_LE_PERIPHERAL 5921 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5922 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5923 uint8_t operation = 0; 5924 if (pos == 0){ 5925 // first fragment or complete data 5926 operation |= 1; 5927 } 5928 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5929 // last fragment or complete data 5930 operation |= 2; 5931 } 5932 return operation; 5933 } 5934 #endif 5935 #endif 5936 5937 static bool hci_run_general_gap_le(void){ 5938 5939 btstack_linked_list_iterator_t lit; 5940 5941 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5942 if (hci_stack->le_resolvable_private_address_update_s > 0){ 5943 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 5944 hci_stack->le_resolvable_private_address_update_s = 0; 5945 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 5946 return true; 5947 } 5948 #endif 5949 5950 // Phase 1: collect what to stop 5951 5952 #ifdef ENABLE_LE_CENTRAL 5953 bool scanning_stop = false; 5954 bool connecting_stop = false; 5955 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5956 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5957 bool periodic_sync_stop = false; 5958 #endif 5959 #endif 5960 #endif 5961 5962 #ifdef ENABLE_LE_PERIPHERAL 5963 bool advertising_stop = false; 5964 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5965 le_advertising_set_t * advertising_stop_set = NULL; 5966 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5967 bool periodic_advertising_stop = false; 5968 #endif 5969 #endif 5970 #endif 5971 5972 // check if own address changes 5973 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5974 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5975 5976 // check if whitelist needs modification 5977 bool whitelist_modification_pending = false; 5978 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5979 while (btstack_linked_list_iterator_has_next(&lit)){ 5980 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5981 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5982 whitelist_modification_pending = true; 5983 break; 5984 } 5985 } 5986 5987 // check if resolving list needs modification 5988 bool resolving_list_modification_pending = false; 5989 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5990 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5991 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5992 resolving_list_modification_pending = true; 5993 } 5994 #endif 5995 5996 #ifdef ENABLE_LE_CENTRAL 5997 5998 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5999 // check if periodic advertiser list needs modification 6000 bool periodic_list_modification_pending = false; 6001 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6002 while (btstack_linked_list_iterator_has_next(&lit)){ 6003 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6004 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6005 periodic_list_modification_pending = true; 6006 break; 6007 } 6008 } 6009 #endif 6010 6011 // scanning control 6012 if (hci_stack->le_scanning_active) { 6013 // stop if: 6014 // - parameter change required 6015 // - it's disabled 6016 // - whitelist change required but used for scanning 6017 // - resolving list modified 6018 // - own address changes 6019 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6020 if ((hci_stack->le_scanning_param_update) || 6021 !hci_stack->le_scanning_enabled || 6022 (scanning_uses_whitelist && whitelist_modification_pending) || 6023 resolving_list_modification_pending || 6024 random_address_change){ 6025 6026 scanning_stop = true; 6027 } 6028 } 6029 6030 // connecting control 6031 bool connecting_with_whitelist; 6032 switch (hci_stack->le_connecting_state){ 6033 case LE_CONNECTING_DIRECT: 6034 case LE_CONNECTING_WHITELIST: 6035 // stop connecting if: 6036 // - connecting uses white and whitelist modification pending 6037 // - if it got disabled 6038 // - resolving list modified 6039 // - own address changes 6040 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6041 if ((connecting_with_whitelist && whitelist_modification_pending) || 6042 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6043 resolving_list_modification_pending || 6044 random_address_change) { 6045 6046 connecting_stop = true; 6047 } 6048 break; 6049 default: 6050 break; 6051 } 6052 6053 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6054 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6055 // periodic sync control 6056 bool sync_with_advertiser_list; 6057 switch(hci_stack->le_periodic_sync_state){ 6058 case LE_CONNECTING_DIRECT: 6059 case LE_CONNECTING_WHITELIST: 6060 // stop sync if: 6061 // - sync with advertiser list and advertiser list modification pending 6062 // - if it got disabled 6063 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6064 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6065 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6066 periodic_sync_stop = true; 6067 } 6068 break; 6069 default: 6070 break; 6071 } 6072 #endif 6073 #endif 6074 6075 #endif /* ENABLE_LE_CENTRAL */ 6076 6077 #ifdef ENABLE_LE_PERIPHERAL 6078 // le advertisement control 6079 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6080 // stop if: 6081 // - parameter change required 6082 // - random address used in advertising and changes 6083 // - it's disabled 6084 // - whitelist change required but used for advertisement filter policy 6085 // - resolving list modified 6086 // - own address changes 6087 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6088 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6089 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6090 if (advertising_change || 6091 (advertising_uses_random_address && random_address_change) || 6092 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6093 (advertising_uses_whitelist && whitelist_modification_pending) || 6094 resolving_list_modification_pending || 6095 random_address_change) { 6096 6097 advertising_stop = true; 6098 } 6099 } 6100 6101 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6102 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6103 btstack_linked_list_iterator_t it; 6104 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6105 while (btstack_linked_list_iterator_has_next(&it)){ 6106 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6107 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6108 // stop if: 6109 // - parameter change required 6110 // - random address used in connectable advertising and changes 6111 // - it's disabled 6112 // - whitelist change required but used for advertisement filter policy 6113 // - resolving list modified 6114 // - own address changes 6115 // - advertisement set will be removed 6116 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6117 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6118 bool advertising_uses_random_address = 6119 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6120 advertising_connectable; 6121 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6122 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6123 bool advertising_set_random_address_change = 6124 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6125 bool advertising_set_will_be_removed = 6126 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6127 if (advertising_parameter_change || 6128 (advertising_uses_random_address && advertising_set_random_address_change) || 6129 (advertising_enabled == false) || 6130 (advertising_uses_whitelist && whitelist_modification_pending) || 6131 resolving_list_modification_pending || 6132 advertising_set_will_be_removed) { 6133 6134 advertising_stop = true; 6135 advertising_stop_set = advertising_set; 6136 break; 6137 } 6138 } 6139 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6140 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6141 // stop if: 6142 // - it's disabled 6143 // - parameter change required 6144 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6145 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6146 if ((periodic_enabled == false) || periodic_parameter_change){ 6147 periodic_advertising_stop = true; 6148 advertising_stop_set = advertising_set; 6149 } 6150 } 6151 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6152 } 6153 } 6154 #endif 6155 6156 #endif 6157 6158 6159 // Phase 2: stop everything that should be off during modifications 6160 6161 6162 // 2.1 Outgoing connection 6163 #ifdef ENABLE_LE_CENTRAL 6164 if (connecting_stop){ 6165 hci_send_cmd(&hci_le_create_connection_cancel); 6166 return true; 6167 } 6168 #endif 6169 6170 // 2.2 Scanning 6171 #ifdef ENABLE_LE_CENTRAL 6172 if (scanning_stop){ 6173 hci_stack->le_scanning_active = false; 6174 hci_le_scan_stop(); 6175 return true; 6176 } 6177 6178 // 2.3 Periodic Sync 6179 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6180 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6181 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6182 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6183 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6184 return true; 6185 } 6186 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6187 if (periodic_sync_stop){ 6188 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6189 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6190 return true; 6191 } 6192 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6193 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6194 #endif /* ENABLE_LE_CENTRAL */ 6195 6196 // 2.4 Advertising: legacy, extended, periodic 6197 #ifdef ENABLE_LE_PERIPHERAL 6198 if (advertising_stop){ 6199 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6200 if (hci_extended_advertising_supported()) { 6201 uint8_t advertising_stop_handle; 6202 if (advertising_stop_set != NULL){ 6203 advertising_stop_handle = advertising_stop_set->advertising_handle; 6204 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6205 } else { 6206 advertising_stop_handle = 0; 6207 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6208 } 6209 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6210 const uint16_t durations[] = { 0 }; 6211 const uint16_t max_events[] = { 0 }; 6212 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6213 } else 6214 #endif 6215 { 6216 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6217 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6218 } 6219 return true; 6220 } 6221 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6222 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6223 if (periodic_advertising_stop){ 6224 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6225 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6226 return true; 6227 } 6228 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6229 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6230 #endif /* ENABLE_LE_PERIPHERAL */ 6231 6232 6233 // Phase 3: modify 6234 6235 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6236 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6237 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6238 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6239 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6240 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6241 #endif 6242 return true; 6243 } 6244 6245 #ifdef ENABLE_LE_CENTRAL 6246 if (hci_stack->le_scanning_param_update){ 6247 hci_stack->le_scanning_param_update = false; 6248 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6249 if (hci_extended_advertising_supported()){ 6250 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6251 uint8_t scan_types[2]; 6252 uint16_t scan_intervals[2]; 6253 uint16_t scan_windows[2]; 6254 6255 uint8_t i; 6256 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6257 for (i=0;i<num_phys;i++){ 6258 scan_types[i] = hci_stack->le_scan_type; 6259 scan_intervals[i] = hci_stack->le_scan_interval; 6260 scan_windows[i] = hci_stack->le_scan_window; 6261 } 6262 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6263 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6264 } else 6265 #endif 6266 { 6267 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6268 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6269 } 6270 return true; 6271 } 6272 #endif 6273 6274 #ifdef ENABLE_LE_PERIPHERAL 6275 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6276 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6277 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6278 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6279 if (hci_extended_advertising_supported()){ 6280 // map advertisment type to advertising event properties 6281 uint16_t adv_event_properties = 0; 6282 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6283 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6284 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6285 } 6286 hci_stack->le_advertising_set_in_current_command = 0; 6287 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6288 0, 6289 adv_event_properties, 6290 hci_stack->le_advertisements_interval_min, 6291 hci_stack->le_advertisements_interval_max, 6292 hci_stack->le_advertisements_channel_map, 6293 hci_stack->le_advertisements_own_addr_type, 6294 hci_stack->le_advertisements_direct_address_type, 6295 hci_stack->le_advertisements_direct_address, 6296 hci_stack->le_advertisements_filter_policy, 6297 0x7f, // tx power: no preference 6298 0x01, // primary adv phy: LE 1M 6299 0, // secondary adv max skip 6300 0x01, // secondary adv phy 6301 0, // adv sid 6302 0 // scan request notification 6303 ); 6304 } else 6305 #endif 6306 { 6307 hci_send_cmd(&hci_le_set_advertising_parameters, 6308 hci_stack->le_advertisements_interval_min, 6309 hci_stack->le_advertisements_interval_max, 6310 hci_stack->le_advertisements_type, 6311 hci_stack->le_advertisements_own_addr_type, 6312 hci_stack->le_advertisements_direct_address_type, 6313 hci_stack->le_advertisements_direct_address, 6314 hci_stack->le_advertisements_channel_map, 6315 hci_stack->le_advertisements_filter_policy); 6316 } 6317 return true; 6318 } 6319 6320 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6321 // assumption: only set if extended advertising is supported 6322 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6323 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6324 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6325 return true; 6326 } 6327 #endif 6328 6329 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6330 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6331 uint8_t adv_data_clean[31]; 6332 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6333 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6334 hci_stack->le_advertisements_data_len); 6335 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6336 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6337 if (hci_extended_advertising_supported()){ 6338 hci_stack->le_advertising_set_in_current_command = 0; 6339 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6340 } else 6341 #endif 6342 { 6343 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6344 } 6345 return true; 6346 } 6347 6348 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6349 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6350 uint8_t scan_data_clean[31]; 6351 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6352 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6353 hci_stack->le_scan_response_data_len); 6354 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6355 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6356 if (hci_extended_advertising_supported()){ 6357 hci_stack->le_advertising_set_in_current_command = 0; 6358 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6359 } else 6360 #endif 6361 { 6362 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6363 } 6364 return true; 6365 } 6366 6367 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6368 if (hci_extended_advertising_supported()) { 6369 btstack_linked_list_iterator_t it; 6370 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6371 while (btstack_linked_list_iterator_has_next(&it)){ 6372 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6373 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6374 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6375 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6376 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6377 return true; 6378 } 6379 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6380 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6381 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6382 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6383 advertising_set->advertising_handle, 6384 advertising_set->extended_params.advertising_event_properties, 6385 advertising_set->extended_params.primary_advertising_interval_min, 6386 advertising_set->extended_params.primary_advertising_interval_max, 6387 advertising_set->extended_params.primary_advertising_channel_map, 6388 advertising_set->extended_params.own_address_type, 6389 advertising_set->extended_params.peer_address_type, 6390 advertising_set->extended_params.peer_address, 6391 advertising_set->extended_params.advertising_filter_policy, 6392 advertising_set->extended_params.advertising_tx_power, 6393 advertising_set->extended_params.primary_advertising_phy, 6394 advertising_set->extended_params.secondary_advertising_max_skip, 6395 advertising_set->extended_params.secondary_advertising_phy, 6396 advertising_set->extended_params.advertising_sid, 6397 advertising_set->extended_params.scan_request_notification_enable 6398 ); 6399 return true; 6400 } 6401 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6402 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6403 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6404 return true; 6405 } 6406 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6407 uint16_t pos = advertising_set->adv_data_pos; 6408 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6409 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6410 if ((operation & 0x02) != 0){ 6411 // last fragment or complete data 6412 operation |= 2; 6413 advertising_set->adv_data_pos = 0; 6414 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6415 } else { 6416 advertising_set->adv_data_pos += data_to_upload; 6417 } 6418 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6419 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6420 return true; 6421 } 6422 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6423 uint16_t pos = advertising_set->scan_data_pos; 6424 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6425 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6426 if ((operation & 0x02) != 0){ 6427 advertising_set->scan_data_pos = 0; 6428 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6429 } else { 6430 advertising_set->scan_data_pos += data_to_upload; 6431 } 6432 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6433 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6434 return true; 6435 } 6436 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6437 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6438 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6439 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6440 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6441 advertising_set->advertising_handle, 6442 advertising_set->periodic_params.periodic_advertising_interval_min, 6443 advertising_set->periodic_params.periodic_advertising_interval_max, 6444 advertising_set->periodic_params.periodic_advertising_properties); 6445 return true; 6446 } 6447 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6448 uint16_t pos = advertising_set->periodic_data_pos; 6449 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6450 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6451 if ((operation & 0x02) != 0){ 6452 // last fragment or complete data 6453 operation |= 2; 6454 advertising_set->periodic_data_pos = 0; 6455 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6456 } else { 6457 advertising_set->periodic_data_pos += data_to_upload; 6458 } 6459 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6460 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6461 return true; 6462 } 6463 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6464 } 6465 } 6466 #endif 6467 6468 #endif 6469 6470 #ifdef ENABLE_LE_CENTRAL 6471 // if connect with whitelist was active and is not cancelled yet, wait until next time 6472 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6473 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6474 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6475 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6476 #endif 6477 #endif 6478 6479 // LE Whitelist Management 6480 if (whitelist_modification_pending){ 6481 // add/remove entries 6482 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6483 while (btstack_linked_list_iterator_has_next(&lit)){ 6484 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6485 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6486 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6487 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6488 bd_addr_type_t address_type = entry->address_type; 6489 bd_addr_t address; 6490 memcpy(address, entry->address, 6); 6491 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6492 // remove from whitelist if not scheduled for re-addition 6493 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6494 btstack_memory_whitelist_entry_free(entry); 6495 } 6496 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6497 return true; 6498 } 6499 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6500 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6501 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6502 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6503 return true; 6504 } 6505 } 6506 } 6507 6508 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6509 // LE Resolving List Management 6510 if (resolving_list_supported) { 6511 uint16_t i; 6512 switch (hci_stack->le_resolving_list_state) { 6513 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6514 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6515 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6516 return true; 6517 case LE_RESOLVING_LIST_READ_SIZE: 6518 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6519 hci_send_cmd(&hci_le_read_resolving_list_size); 6520 return true; 6521 case LE_RESOLVING_LIST_SEND_CLEAR: 6522 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6523 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6524 sizeof(hci_stack->le_resolving_list_add_entries)); 6525 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6526 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6527 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6528 sizeof(hci_stack->le_resolving_list_remove_entries)); 6529 hci_send_cmd(&hci_le_clear_resolving_list); 6530 return true; 6531 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6532 // first remove old entries 6533 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6534 uint8_t offset = i >> 3; 6535 uint8_t mask = 1 << (i & 7); 6536 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6537 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6538 bd_addr_t peer_identity_addreses; 6539 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6540 sm_key_t peer_irk; 6541 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6542 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6543 6544 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6545 // trigger whitelist entry 'update' (work around for controller bug) 6546 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6547 while (btstack_linked_list_iterator_has_next(&lit)) { 6548 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6549 if (entry->address_type != peer_identity_addr_type) continue; 6550 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6551 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6552 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6553 } 6554 #endif 6555 6556 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6557 peer_identity_addreses); 6558 return true; 6559 } 6560 6561 // then add new entries 6562 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6563 uint8_t offset = i >> 3; 6564 uint8_t mask = 1 << (i & 7); 6565 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6566 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6567 bd_addr_t peer_identity_addreses; 6568 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6569 sm_key_t peer_irk; 6570 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6571 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6572 if (btstack_is_null(peer_irk, 16)) continue; 6573 const uint8_t *local_irk = gap_get_persistent_irk(); 6574 // command uses format specifier 'P' that stores 16-byte value without flip 6575 uint8_t local_irk_flipped[16]; 6576 uint8_t peer_irk_flipped[16]; 6577 reverse_128(local_irk, local_irk_flipped); 6578 reverse_128(peer_irk, peer_irk_flipped); 6579 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6580 peer_irk_flipped, local_irk_flipped); 6581 return true; 6582 } 6583 6584 // finally, set privacy mode 6585 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6586 uint8_t offset = i >> 3; 6587 uint8_t mask = 1 << (i & 7); 6588 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6589 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6590 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6591 // Network Privacy Mode is default 6592 continue; 6593 } 6594 bd_addr_t peer_identity_address; 6595 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6596 sm_key_t peer_irk; 6597 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6598 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6599 if (btstack_is_null(peer_irk, 16)) continue; 6600 // command uses format specifier 'P' that stores 16-byte value without flip 6601 uint8_t peer_irk_flipped[16]; 6602 reverse_128(peer_irk, peer_irk_flipped); 6603 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6604 return true; 6605 } 6606 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6607 break; 6608 6609 default: 6610 break; 6611 } 6612 } 6613 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6614 #endif 6615 6616 #ifdef ENABLE_LE_CENTRAL 6617 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6618 // LE Whitelist Management 6619 if (periodic_list_modification_pending){ 6620 // add/remove entries 6621 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6622 while (btstack_linked_list_iterator_has_next(&lit)){ 6623 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6624 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6625 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6626 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6627 return true; 6628 } 6629 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6630 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6631 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6632 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6633 return true; 6634 } 6635 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6636 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6637 btstack_memory_periodic_advertiser_list_entry_free(entry); 6638 } 6639 } 6640 } 6641 #endif 6642 #endif 6643 6644 #ifdef ENABLE_LE_CENTRAL 6645 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6646 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6647 if (hci_stack->le_past_set_default_params){ 6648 hci_stack->le_past_set_default_params = false; 6649 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6650 hci_stack->le_past_mode, 6651 hci_stack->le_past_skip, 6652 hci_stack->le_past_sync_timeout, 6653 hci_stack->le_past_cte_type); 6654 return true; 6655 } 6656 #endif 6657 #endif 6658 #endif 6659 6660 // post-pone all actions until stack is fully working 6661 if (hci_stack->state != HCI_STATE_WORKING) return false; 6662 6663 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6664 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6665 6666 // Phase 4: restore state 6667 6668 #ifdef ENABLE_LE_CENTRAL 6669 // re-start scanning 6670 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6671 hci_stack->le_scanning_active = true; 6672 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6673 if (hci_extended_advertising_supported()){ 6674 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6675 } else 6676 #endif 6677 { 6678 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6679 } 6680 return true; 6681 } 6682 #endif 6683 6684 #ifdef ENABLE_LE_CENTRAL 6685 // re-start connecting 6686 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6687 bd_addr_t null_addr; 6688 memset(null_addr, 0, 6); 6689 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6690 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6691 hci_send_le_create_connection(1, 0, null_addr); 6692 return true; 6693 } 6694 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6695 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6696 switch(hci_stack->le_periodic_sync_request){ 6697 case LE_CONNECTING_DIRECT: 6698 case LE_CONNECTING_WHITELIST: 6699 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6700 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6701 hci_stack->le_periodic_sync_options, 6702 hci_stack->le_periodic_sync_advertising_sid, 6703 hci_stack->le_periodic_sync_advertiser_address_type, 6704 hci_stack->le_periodic_sync_advertiser_address, 6705 hci_stack->le_periodic_sync_skip, 6706 hci_stack->le_periodic_sync_timeout, 6707 hci_stack->le_periodic_sync_cte_type); 6708 return true; 6709 default: 6710 break; 6711 } 6712 } 6713 #endif 6714 #endif 6715 6716 #ifdef ENABLE_LE_PERIPHERAL 6717 // re-start advertising 6718 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6719 // check if advertisements should be enabled given 6720 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6721 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6722 6723 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6724 if (hci_extended_advertising_supported()){ 6725 const uint8_t advertising_handles[] = { 0 }; 6726 const uint16_t durations[] = { 0 }; 6727 const uint16_t max_events[] = { 0 }; 6728 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6729 } else 6730 #endif 6731 { 6732 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6733 } 6734 return true; 6735 } 6736 6737 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6738 if (hci_extended_advertising_supported()) { 6739 btstack_linked_list_iterator_t it; 6740 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6741 while (btstack_linked_list_iterator_has_next(&it)) { 6742 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6743 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6744 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6745 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6746 const uint16_t durations[] = { advertising_set->enable_timeout }; 6747 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6748 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6749 return true; 6750 } 6751 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6752 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6753 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6754 uint8_t enable = 1; 6755 if (advertising_set->periodic_include_adi){ 6756 enable |= 2; 6757 } 6758 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6759 return true; 6760 } 6761 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6762 } 6763 } 6764 #endif 6765 #endif 6766 6767 return false; 6768 } 6769 6770 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6771 static bool hci_run_iso_tasks(void){ 6772 btstack_linked_list_iterator_t it; 6773 6774 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6775 return false; 6776 } 6777 6778 // BIG 6779 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6780 while (btstack_linked_list_iterator_has_next(&it)){ 6781 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6782 switch (big->state){ 6783 case LE_AUDIO_BIG_STATE_CREATE: 6784 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6785 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6786 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6787 hci_send_cmd(&hci_le_create_big, 6788 big->params->big_handle, 6789 big->params->advertising_handle, 6790 big->params->num_bis, 6791 big->params->sdu_interval_us, 6792 big->params->max_sdu, 6793 big->params->max_transport_latency_ms, 6794 big->params->rtn, 6795 big->params->phy, 6796 big->params->packing, 6797 big->params->framing, 6798 big->params->encryption, 6799 big->params->broadcast_code); 6800 return true; 6801 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6802 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6803 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); 6804 return true; 6805 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6806 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6807 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6808 return true; 6809 case LE_AUDIO_BIG_STATE_TERMINATE: 6810 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6811 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6812 return true; 6813 default: 6814 break; 6815 } 6816 } 6817 6818 // BIG Sync 6819 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6820 while (btstack_linked_list_iterator_has_next(&it)){ 6821 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6822 switch (big_sync->state){ 6823 case LE_AUDIO_BIG_STATE_CREATE: 6824 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6825 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6826 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6827 hci_send_cmd(&hci_le_big_create_sync, 6828 big_sync->params->big_handle, 6829 big_sync->params->sync_handle, 6830 big_sync->params->encryption, 6831 big_sync->params->broadcast_code, 6832 big_sync->params->mse, 6833 big_sync->params->big_sync_timeout_10ms, 6834 big_sync->params->num_bis, 6835 big_sync->params->bis_indices); 6836 return true; 6837 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6838 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6839 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); 6840 return true; 6841 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6842 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6843 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6844 return true; 6845 case LE_AUDIO_BIG_STATE_TERMINATE: 6846 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6847 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6848 return true; 6849 default: 6850 break; 6851 } 6852 } 6853 6854 // CIG 6855 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6856 while (btstack_linked_list_iterator_has_next(&it)) { 6857 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6858 uint8_t i; 6859 // Set CIG Parameters 6860 uint8_t cis_id[MAX_NR_CIS]; 6861 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6862 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6863 uint8_t phy_c_to_p[MAX_NR_CIS]; 6864 uint8_t phy_p_to_c[MAX_NR_CIS]; 6865 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6866 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6867 switch (cig->state) { 6868 case LE_AUDIO_CIG_STATE_CREATE: 6869 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6870 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6871 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6872 le_audio_cig_params_t * params = cig->params; 6873 for (i = 0; i < params->num_cis; i++) { 6874 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6875 cis_id[i] = cis_params->cis_id; 6876 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6877 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6878 phy_c_to_p[i] = cis_params->phy_c_to_p; 6879 phy_p_to_c[i] = cis_params->phy_p_to_c; 6880 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6881 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6882 } 6883 hci_send_cmd(&hci_le_set_cig_parameters, 6884 cig->cig_id, 6885 params->sdu_interval_c_to_p, 6886 params->sdu_interval_p_to_c, 6887 params->worst_case_sca, 6888 params->packing, 6889 params->framing, 6890 params->max_transport_latency_c_to_p, 6891 params->max_transport_latency_p_to_c, 6892 params->num_cis, 6893 cis_id, 6894 max_sdu_c_to_p, 6895 max_sdu_p_to_c, 6896 phy_c_to_p, 6897 phy_p_to_c, 6898 rtn_c_to_p, 6899 rtn_p_to_c 6900 ); 6901 return true; 6902 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6903 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6904 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6905 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6906 for (i=0;i<cig->num_cis;i++){ 6907 cig->cis_setup_active[i] = true; 6908 } 6909 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6910 return true; 6911 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6912 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6913 // find next path to setup 6914 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6915 if (cig->cis_established[cis_index] == false) { 6916 continue; 6917 } 6918 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6919 bool setup = true; 6920 if (cis_direction == 0){ 6921 // 0 - input - host to controller 6922 // we are central => central to peripheral 6923 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6924 } else { 6925 // 1 - output - controller to host 6926 // we are central => peripheral to central 6927 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6928 } 6929 if (setup){ 6930 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6931 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6932 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6933 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); 6934 return true; 6935 } 6936 cig->state_vars.next_cis++; 6937 } 6938 // emit done 6939 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6940 default: 6941 break; 6942 } 6943 } 6944 6945 // CIS Accept/Reject 6946 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6947 while (btstack_linked_list_iterator_has_next(&it)) { 6948 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6949 hci_con_handle_t con_handle; 6950 switch (iso_stream->state){ 6951 case HCI_ISO_STREAM_W2_ACCEPT: 6952 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6953 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6954 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6955 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6956 return true; 6957 case HCI_ISO_STREAM_W2_REJECT: 6958 con_handle = iso_stream->cis_handle; 6959 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6960 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6961 hci_iso_stream_finalize(iso_stream); 6962 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6963 return true; 6964 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6965 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6966 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6967 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6968 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); 6969 break; 6970 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6971 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6972 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6973 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6974 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); 6975 break; 6976 default: 6977 break; 6978 } 6979 } 6980 6981 return false; 6982 } 6983 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6984 #endif 6985 6986 static bool hci_run_general_pending_commands(void){ 6987 btstack_linked_item_t * it; 6988 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6989 hci_connection_t * connection = (hci_connection_t *) it; 6990 6991 switch(connection->state){ 6992 case SEND_CREATE_CONNECTION: 6993 switch(connection->address_type){ 6994 #ifdef ENABLE_CLASSIC 6995 case BD_ADDR_TYPE_ACL: 6996 log_info("sending hci_create_connection"); 6997 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6998 break; 6999 #endif 7000 default: 7001 #ifdef ENABLE_BLE 7002 #ifdef ENABLE_LE_CENTRAL 7003 log_info("sending hci_le_create_connection"); 7004 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7005 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7006 hci_send_le_create_connection(0, connection->address_type, connection->address); 7007 connection->state = SENT_CREATE_CONNECTION; 7008 #endif 7009 #endif 7010 break; 7011 } 7012 return true; 7013 7014 #ifdef ENABLE_CLASSIC 7015 case RECEIVED_CONNECTION_REQUEST: 7016 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7017 log_info("sending hci_accept_connection_request"); 7018 connection->state = ACCEPTED_CONNECTION_REQUEST; 7019 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7020 return true; 7021 } 7022 break; 7023 #endif 7024 case SEND_DISCONNECT: 7025 connection->state = SENT_DISCONNECT; 7026 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7027 return true; 7028 7029 default: 7030 break; 7031 } 7032 7033 // no further commands if connection is about to get shut down 7034 if (connection->state == SENT_DISCONNECT) continue; 7035 7036 #ifdef ENABLE_CLASSIC 7037 7038 // Handling link key request requires remote supported features 7039 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7040 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7041 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7042 7043 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7044 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7045 if (have_link_key && security_level_sufficient){ 7046 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7047 } else { 7048 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7049 } 7050 return true; 7051 } 7052 7053 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7054 log_info("denying to pin request"); 7055 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7056 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7057 return true; 7058 } 7059 7060 // security assessment requires remote features 7061 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7062 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7063 hci_ssp_assess_security_on_io_cap_request(connection); 7064 // 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 7065 } 7066 7067 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7068 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7069 // set authentication requirements: 7070 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7071 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7072 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7073 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7074 authreq |= 1; 7075 } 7076 bool bonding = hci_stack->bondable; 7077 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7078 // if we have received IO Cap Response, we're in responder role 7079 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7080 if (bonding && !remote_bonding){ 7081 log_info("Remote not bonding, dropping local flag"); 7082 bonding = false; 7083 } 7084 } 7085 if (bonding){ 7086 if (connection->bonding_flags & BONDING_DEDICATED){ 7087 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7088 } else { 7089 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7090 } 7091 } 7092 uint8_t have_oob_data = 0; 7093 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7094 if (connection->classic_oob_c_192 != NULL){ 7095 have_oob_data |= 1; 7096 } 7097 if (connection->classic_oob_c_256 != NULL){ 7098 have_oob_data |= 2; 7099 } 7100 #endif 7101 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7102 return true; 7103 } 7104 7105 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7106 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7107 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7108 return true; 7109 } 7110 7111 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7112 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7113 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7114 const uint8_t zero[16] = { 0 }; 7115 const uint8_t * r_192 = zero; 7116 const uint8_t * c_192 = zero; 7117 const uint8_t * r_256 = zero; 7118 const uint8_t * c_256 = zero; 7119 // verify P-256 OOB 7120 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7121 c_256 = connection->classic_oob_c_256; 7122 if (connection->classic_oob_r_256 != NULL) { 7123 r_256 = connection->classic_oob_r_256; 7124 } 7125 } 7126 // verify P-192 OOB 7127 if ((connection->classic_oob_c_192 != NULL)) { 7128 c_192 = connection->classic_oob_c_192; 7129 if (connection->classic_oob_r_192 != NULL) { 7130 r_192 = connection->classic_oob_r_192; 7131 } 7132 } 7133 7134 // assess security 7135 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7136 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7137 if (need_level_4 && !can_reach_level_4){ 7138 log_info("Level 4 required, but not possible -> abort"); 7139 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7140 // send oob negative reply 7141 c_256 = NULL; 7142 c_192 = NULL; 7143 } 7144 7145 // Reply 7146 if (c_256 != zero) { 7147 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7148 } else if (c_192 != zero){ 7149 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7150 } else { 7151 hci_stack->classic_oob_con_handle = connection->con_handle; 7152 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7153 } 7154 return true; 7155 } 7156 #endif 7157 7158 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7159 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7160 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7161 return true; 7162 } 7163 7164 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7165 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7166 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7167 return true; 7168 } 7169 7170 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7171 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7172 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7173 return true; 7174 } 7175 7176 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7177 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7178 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7179 connection->state = SENT_DISCONNECT; 7180 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7181 return true; 7182 } 7183 7184 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7185 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7186 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7187 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7188 return true; 7189 } 7190 7191 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7192 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7193 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7194 return true; 7195 } 7196 7197 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7198 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7199 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7200 return true; 7201 } 7202 7203 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7204 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7205 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7206 return true; 7207 } 7208 7209 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7210 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7211 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7212 return true; 7213 } 7214 7215 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7216 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7217 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7218 return true; 7219 } 7220 #endif 7221 7222 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7223 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7224 #ifdef ENABLE_CLASSIC 7225 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7226 #endif 7227 if (connection->state != SENT_DISCONNECT){ 7228 connection->state = SENT_DISCONNECT; 7229 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7230 return true; 7231 } 7232 } 7233 7234 #ifdef ENABLE_CLASSIC 7235 uint16_t sniff_min_interval; 7236 switch (connection->sniff_min_interval){ 7237 case 0: 7238 break; 7239 case 0xffff: 7240 connection->sniff_min_interval = 0; 7241 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7242 return true; 7243 default: 7244 sniff_min_interval = connection->sniff_min_interval; 7245 connection->sniff_min_interval = 0; 7246 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7247 return true; 7248 } 7249 7250 if (connection->sniff_subrating_max_latency != 0xffff){ 7251 uint16_t max_latency = connection->sniff_subrating_max_latency; 7252 connection->sniff_subrating_max_latency = 0; 7253 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7254 return true; 7255 } 7256 7257 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7258 uint8_t service_type = (uint8_t) connection->qos_service_type; 7259 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7260 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); 7261 return true; 7262 } 7263 7264 if (connection->request_role != HCI_ROLE_INVALID){ 7265 hci_role_t role = connection->request_role; 7266 connection->request_role = HCI_ROLE_INVALID; 7267 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7268 return true; 7269 } 7270 #endif 7271 7272 if (connection->gap_connection_tasks != 0){ 7273 #ifdef ENABLE_CLASSIC 7274 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7275 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7276 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7277 return true; 7278 } 7279 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7280 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7281 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7282 return true; 7283 } 7284 #endif 7285 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7286 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7287 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7288 return true; 7289 } 7290 #ifdef ENABLE_BLE 7291 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7292 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7293 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7294 return true; 7295 } 7296 #endif 7297 } 7298 7299 #ifdef ENABLE_BLE 7300 switch (connection->le_con_parameter_update_state){ 7301 // response to L2CAP CON PARAMETER UPDATE REQUEST 7302 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7303 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7304 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7305 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7306 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7307 return true; 7308 case CON_PARAMETER_UPDATE_REPLY: 7309 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7310 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7311 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7312 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7313 return true; 7314 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7315 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7316 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7317 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7318 return true; 7319 default: 7320 break; 7321 } 7322 if (connection->le_phy_update_all_phys != 0xffu){ 7323 uint8_t all_phys = connection->le_phy_update_all_phys; 7324 connection->le_phy_update_all_phys = 0xff; 7325 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); 7326 return true; 7327 } 7328 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7329 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7330 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7331 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7332 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7333 return true; 7334 } 7335 if (connection->le_past_advertising_handle != 0xff){ 7336 uint8_t advertising_handle = connection->le_past_advertising_handle; 7337 connection->le_past_advertising_handle = 0xff; 7338 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7339 return true; 7340 } 7341 #endif 7342 #endif 7343 } 7344 return false; 7345 } 7346 7347 static void hci_run(void){ 7348 7349 // stack state sub statemachines 7350 switch (hci_stack->state) { 7351 case HCI_STATE_INITIALIZING: 7352 hci_initializing_run(); 7353 break; 7354 case HCI_STATE_HALTING: 7355 hci_halting_run(); 7356 break; 7357 case HCI_STATE_FALLING_ASLEEP: 7358 hci_falling_asleep_run(); 7359 break; 7360 default: 7361 break; 7362 } 7363 7364 // allow to run after initialization to working transition 7365 if (hci_stack->state != HCI_STATE_WORKING){ 7366 return; 7367 } 7368 7369 bool done; 7370 7371 // send continuation fragments first, as they block the prepared packet buffer 7372 done = hci_run_acl_fragments(); 7373 if (done) return; 7374 7375 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7376 done = hci_run_iso_fragments(); 7377 if (done) return; 7378 #endif 7379 7380 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7381 // send host num completed packets next as they don't require num_cmd_packets > 0 7382 if (!hci_can_send_comand_packet_transport()) return; 7383 if (hci_stack->host_completed_packets){ 7384 hci_host_num_completed_packets(); 7385 return; 7386 } 7387 #endif 7388 7389 if (!hci_can_send_command_packet_now()) return; 7390 7391 // global/non-connection oriented commands 7392 7393 7394 #ifdef ENABLE_CLASSIC 7395 // general gap classic 7396 done = hci_run_general_gap_classic(); 7397 if (done) return; 7398 #endif 7399 7400 #ifdef ENABLE_BLE 7401 // general gap le 7402 done = hci_run_general_gap_le(); 7403 if (done) return; 7404 7405 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7406 // ISO related tasks, e.g. BIG create/terminate/sync 7407 done = hci_run_iso_tasks(); 7408 if (done) return; 7409 #endif 7410 #endif 7411 7412 // send pending HCI commands 7413 hci_run_general_pending_commands(); 7414 } 7415 7416 #ifdef ENABLE_CLASSIC 7417 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7418 // bits 6-9 are 'don't use' 7419 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7420 7421 // restrict packet types to local and remote supported 7422 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7423 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7424 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7425 } 7426 #endif 7427 7428 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7429 // house-keeping 7430 7431 #ifdef ENABLE_CLASSIC 7432 bd_addr_t addr; 7433 hci_connection_t * conn; 7434 #endif 7435 #ifdef ENABLE_LE_CENTRAL 7436 uint8_t initiator_filter_policy; 7437 #endif 7438 7439 uint16_t opcode = little_endian_read_16(packet, 0); 7440 switch (opcode) { 7441 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7442 hci_stack->loopback_mode = packet[3]; 7443 break; 7444 7445 #ifdef ENABLE_CLASSIC 7446 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7447 reverse_bd_addr(&packet[3], addr); 7448 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7449 7450 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7451 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7452 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7453 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7454 } 7455 7456 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7457 if (!conn) { 7458 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7459 if (!conn) { 7460 // notify client that alloc failed 7461 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7462 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7463 } 7464 conn->state = SEND_CREATE_CONNECTION; 7465 } 7466 7467 log_info("conn state %u", conn->state); 7468 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7469 switch (conn->state) { 7470 // if connection active exists 7471 case OPEN: 7472 // and OPEN, emit connection complete command 7473 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7474 // packet not sent to controller 7475 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7476 case RECEIVED_DISCONNECTION_COMPLETE: 7477 // create connection triggered in disconnect complete event, let's do it now 7478 break; 7479 case SEND_CREATE_CONNECTION: 7480 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7481 if (hci_classic_operation_active()){ 7482 return ERROR_CODE_SUCCESS; 7483 } 7484 #endif 7485 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7486 break; 7487 default: 7488 // otherwise, just ignore as it is already in the open process 7489 // packet not sent to controller 7490 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7491 } 7492 conn->state = SENT_CREATE_CONNECTION; 7493 7494 // track outgoing connection 7495 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7496 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7497 break; 7498 7499 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7500 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7501 if (conn == NULL) { 7502 // neither SCO nor ACL connection for con handle 7503 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7504 } else { 7505 uint16_t remote_supported_sco_packets; 7506 switch (conn->address_type){ 7507 case BD_ADDR_TYPE_ACL: 7508 // assert SCO connection does not exit 7509 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7510 return ERROR_CODE_COMMAND_DISALLOWED; 7511 } 7512 // cache remote sco packet types 7513 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7514 7515 // allocate connection struct 7516 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7517 HCI_ROLE_MASTER); 7518 if (!conn) { 7519 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7520 } 7521 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7522 break; 7523 case BD_ADDR_TYPE_SCO: 7524 // update of existing SCO connection 7525 break; 7526 default: 7527 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7528 } 7529 } 7530 7531 // conn refers to hci connection of type sco now 7532 7533 conn->state = SENT_CREATE_CONNECTION; 7534 7535 // track outgoing connection to handle command status with error 7536 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7537 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7538 7539 // setup_synchronous_connection? Voice setting at offset 22 7540 // TODO: compare to current setting if sco connection already active 7541 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7542 7543 // derive sco payload length from packet types 7544 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7545 break; 7546 7547 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7548 // get SCO connection 7549 reverse_bd_addr(&packet[3], addr); 7550 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7551 if (conn == NULL){ 7552 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7553 } 7554 7555 conn->state = ACCEPTED_CONNECTION_REQUEST; 7556 7557 // track outgoing connection to handle command status with error 7558 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7559 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7560 7561 // accept_synchronous_connection? Voice setting at offset 18 7562 // TODO: compare to current setting if sco connection already active 7563 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7564 7565 // derive sco payload length from packet types 7566 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7567 break; 7568 #endif 7569 7570 #ifdef ENABLE_BLE 7571 #ifdef ENABLE_LE_CENTRAL 7572 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7573 // white list used? 7574 initiator_filter_policy = packet[7]; 7575 switch (initiator_filter_policy) { 7576 case 0: 7577 // whitelist not used 7578 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7579 break; 7580 case 1: 7581 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7582 break; 7583 default: 7584 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7585 break; 7586 } 7587 // track outgoing connection 7588 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7589 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7590 break; 7591 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7592 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7593 // white list used? 7594 initiator_filter_policy = packet[3]; 7595 switch (initiator_filter_policy) { 7596 case 0: 7597 // whitelist not used 7598 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7599 break; 7600 case 1: 7601 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7602 break; 7603 default: 7604 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7605 break; 7606 } 7607 // track outgoing connection 7608 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7609 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7610 break; 7611 #endif 7612 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7613 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7614 break; 7615 #endif 7616 #endif /* ENABLE_BLE */ 7617 default: 7618 break; 7619 } 7620 7621 hci_stack->num_cmd_packets--; 7622 7623 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7624 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7625 if (err != 0){ 7626 return ERROR_CODE_HARDWARE_FAILURE; 7627 } 7628 return ERROR_CODE_SUCCESS; 7629 } 7630 7631 // disconnect because of security block 7632 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7633 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7634 if (!connection) return; 7635 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7636 } 7637 7638 7639 // Configure Secure Simple Pairing 7640 7641 #ifdef ENABLE_CLASSIC 7642 7643 // enable will enable SSP during init 7644 void gap_ssp_set_enable(int enable){ 7645 hci_stack->ssp_enable = enable; 7646 } 7647 7648 static int hci_local_ssp_activated(void){ 7649 return gap_ssp_supported() && hci_stack->ssp_enable; 7650 } 7651 7652 // if set, BTstack will respond to io capability request using authentication requirement 7653 void gap_ssp_set_io_capability(int io_capability){ 7654 hci_stack->ssp_io_capability = io_capability; 7655 } 7656 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7657 hci_stack->ssp_authentication_requirement = authentication_requirement; 7658 } 7659 7660 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7661 void gap_ssp_set_auto_accept(int auto_accept){ 7662 hci_stack->ssp_auto_accept = auto_accept; 7663 } 7664 7665 void gap_secure_connections_enable(bool enable){ 7666 hci_stack->secure_connections_enable = enable; 7667 } 7668 bool gap_secure_connections_active(void){ 7669 return hci_stack->secure_connections_active; 7670 } 7671 7672 #endif 7673 7674 // va_list part of hci_send_cmd 7675 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7676 if (!hci_can_send_command_packet_now()){ 7677 log_error("hci_send_cmd called but cannot send packet now"); 7678 return ERROR_CODE_COMMAND_DISALLOWED; 7679 } 7680 7681 // for HCI INITIALIZATION 7682 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7683 hci_stack->last_cmd_opcode = cmd->opcode; 7684 7685 hci_reserve_packet_buffer(); 7686 uint8_t * packet = hci_stack->hci_packet_buffer; 7687 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7688 uint8_t status = hci_send_cmd_packet(packet, size); 7689 7690 // release packet buffer on error or for synchronous transport implementations 7691 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7692 hci_release_packet_buffer(); 7693 hci_emit_transport_packet_sent(); 7694 } 7695 7696 return status; 7697 } 7698 7699 /** 7700 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7701 */ 7702 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7703 va_list argptr; 7704 va_start(argptr, cmd); 7705 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7706 va_end(argptr); 7707 return status; 7708 } 7709 7710 // Create various non-HCI events. 7711 // TODO: generalize, use table similar to hci_create_command 7712 7713 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7714 // dump packet 7715 if (dump) { 7716 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7717 } 7718 7719 // dispatch to all event handlers 7720 btstack_linked_list_iterator_t it; 7721 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7722 while (btstack_linked_list_iterator_has_next(&it)){ 7723 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7724 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7725 } 7726 } 7727 7728 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7729 if (!hci_stack->acl_packet_handler) return; 7730 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7731 } 7732 7733 #ifdef ENABLE_CLASSIC 7734 static void hci_notify_if_sco_can_send_now(void){ 7735 // notify SCO sender if waiting 7736 if (!hci_stack->sco_waiting_for_can_send_now) return; 7737 if (hci_can_send_sco_packet_now()){ 7738 hci_stack->sco_waiting_for_can_send_now = 0; 7739 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7740 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7741 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7742 } 7743 } 7744 7745 // parsing end emitting has been merged to reduce code size 7746 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7747 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7748 7749 uint8_t * eir_data; 7750 ad_context_t context; 7751 const uint8_t * name; 7752 uint8_t name_len; 7753 7754 if (size < 3) return; 7755 7756 int event_type = hci_event_packet_get_type(packet); 7757 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7758 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7759 7760 switch (event_type){ 7761 case HCI_EVENT_INQUIRY_RESULT: 7762 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7763 if (size != (3 + (num_responses * 14))) return; 7764 break; 7765 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7766 if (size != 257) return; 7767 if (num_responses != 1) return; 7768 break; 7769 default: 7770 return; 7771 } 7772 7773 // event[1] is set at the end 7774 int i; 7775 for (i=0; i<num_responses;i++){ 7776 memset(event, 0, sizeof(event)); 7777 event[0] = GAP_EVENT_INQUIRY_RESULT; 7778 uint8_t event_size = 27; // if name is not set by EIR 7779 7780 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7781 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7782 (void)memcpy(&event[9], 7783 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7784 3); // class of device 7785 (void)memcpy(&event[12], 7786 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7787 2); // clock offset 7788 7789 switch (event_type){ 7790 case HCI_EVENT_INQUIRY_RESULT: 7791 // 14,15,16,17 = 0, size 18 7792 break; 7793 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7794 event[14] = 1; 7795 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7796 // 16,17 = 0, size 18 7797 break; 7798 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7799 event[14] = 1; 7800 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7801 // EIR packets only contain a single inquiry response 7802 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7803 name = NULL; 7804 // Iterate over EIR data 7805 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7806 uint8_t data_type = ad_iterator_get_data_type(&context); 7807 uint8_t data_size = ad_iterator_get_data_len(&context); 7808 const uint8_t * data = ad_iterator_get_data(&context); 7809 // Prefer Complete Local Name over Shortened Local Name 7810 switch (data_type){ 7811 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7812 if (name) continue; 7813 /* fall through */ 7814 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7815 name = data; 7816 name_len = data_size; 7817 break; 7818 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7819 if (data_size != 8) break; 7820 event[16] = 1; 7821 memcpy(&event[17], data, 8); 7822 break; 7823 default: 7824 break; 7825 } 7826 } 7827 if (name){ 7828 event[25] = 1; 7829 // truncate name if needed 7830 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7831 event[26] = len; 7832 (void)memcpy(&event[27], name, len); 7833 event_size += len; 7834 } 7835 break; 7836 default: 7837 return; 7838 } 7839 event[1] = event_size - 2; 7840 hci_emit_event(event, event_size, 1); 7841 } 7842 } 7843 #endif 7844 7845 void hci_emit_state(void){ 7846 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7847 uint8_t event[3]; 7848 event[0] = BTSTACK_EVENT_STATE; 7849 event[1] = sizeof(event) - 2u; 7850 event[2] = hci_stack->state; 7851 hci_emit_event(event, sizeof(event), 1); 7852 } 7853 7854 #ifdef ENABLE_CLASSIC 7855 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7856 uint8_t event[13]; 7857 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7858 event[1] = sizeof(event) - 2; 7859 event[2] = status; 7860 little_endian_store_16(event, 3, con_handle); 7861 reverse_bd_addr(address, &event[5]); 7862 event[11] = 1; // ACL connection 7863 event[12] = 0; // encryption disabled 7864 hci_emit_event(event, sizeof(event), 1); 7865 } 7866 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7867 if (disable_l2cap_timeouts) return; 7868 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7869 uint8_t event[4]; 7870 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7871 event[1] = sizeof(event) - 2; 7872 little_endian_store_16(event, 2, conn->con_handle); 7873 hci_emit_event(event, sizeof(event), 1); 7874 } 7875 #endif 7876 7877 #ifdef ENABLE_BLE 7878 #ifdef ENABLE_LE_CENTRAL 7879 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){ 7880 uint8_t event[21]; 7881 event[0] = HCI_EVENT_LE_META; 7882 event[1] = sizeof(event) - 2u; 7883 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7884 event[3] = status; 7885 little_endian_store_16(event, 4, con_handle); 7886 event[6] = 0; // TODO: role 7887 event[7] = address_type; 7888 reverse_bd_addr(address, &event[8]); 7889 little_endian_store_16(event, 14, 0); // interval 7890 little_endian_store_16(event, 16, 0); // latency 7891 little_endian_store_16(event, 18, 0); // supervision timeout 7892 event[20] = 0; // master clock accuracy 7893 hci_emit_event(event, sizeof(event), 1); 7894 } 7895 #endif 7896 #endif 7897 7898 static void hci_emit_transport_packet_sent(void){ 7899 // notify upper stack that it might be possible to send again 7900 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7901 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7902 } 7903 7904 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7905 uint8_t event[6]; 7906 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7907 event[1] = sizeof(event) - 2u; 7908 event[2] = 0; // status = OK 7909 little_endian_store_16(event, 3, con_handle); 7910 event[5] = reason; 7911 hci_emit_event(event, sizeof(event), 1); 7912 } 7913 7914 static void hci_emit_nr_connections_changed(void){ 7915 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7916 uint8_t event[3]; 7917 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7918 event[1] = sizeof(event) - 2u; 7919 event[2] = nr_hci_connections(); 7920 hci_emit_event(event, sizeof(event), 1); 7921 } 7922 7923 static void hci_emit_hci_open_failed(void){ 7924 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7925 uint8_t event[2]; 7926 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7927 event[1] = sizeof(event) - 2u; 7928 hci_emit_event(event, sizeof(event), 1); 7929 } 7930 7931 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7932 log_info("hci_emit_dedicated_bonding_result %u ", status); 7933 uint8_t event[9]; 7934 int pos = 0; 7935 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7936 event[pos++] = sizeof(event) - 2u; 7937 event[pos++] = status; 7938 reverse_bd_addr(address, &event[pos]); 7939 hci_emit_event(event, sizeof(event), 1); 7940 } 7941 7942 7943 #ifdef ENABLE_CLASSIC 7944 7945 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7946 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7947 uint8_t event[5]; 7948 int pos = 0; 7949 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7950 event[pos++] = sizeof(event) - 2; 7951 little_endian_store_16(event, 2, con_handle); 7952 pos += 2; 7953 event[pos++] = level; 7954 hci_emit_event(event, sizeof(event), 1); 7955 } 7956 7957 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7958 if (!connection) return LEVEL_0; 7959 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7960 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7961 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7962 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7963 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7964 // LEVEL 4 always requires 128 bit encrytion key size 7965 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7966 security_level = LEVEL_3; 7967 } 7968 return security_level; 7969 } 7970 7971 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7972 uint8_t event[4]; 7973 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7974 event[1] = sizeof(event) - 2; 7975 event[2] = discoverable; 7976 event[3] = connectable; 7977 hci_emit_event(event, sizeof(event), 1); 7978 } 7979 7980 // query if remote side supports eSCO 7981 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7982 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7983 if (!connection) return false; 7984 return (connection->remote_supported_features[0] & 1) != 0; 7985 } 7986 7987 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 7988 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7989 if (!connection) return 0; 7990 return connection->remote_supported_sco_packets; 7991 } 7992 7993 static bool hci_ssp_supported(hci_connection_t * connection){ 7994 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7995 return (connection->bonding_flags & mask) == mask; 7996 } 7997 7998 // query if remote side supports SSP 7999 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8000 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8001 if (!connection) return false; 8002 return hci_ssp_supported(connection) ? 1 : 0; 8003 } 8004 8005 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8006 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8007 } 8008 8009 /** 8010 * Check if remote supported features query has completed 8011 */ 8012 bool hci_remote_features_available(hci_con_handle_t handle){ 8013 hci_connection_t * connection = hci_connection_for_handle(handle); 8014 if (!connection) return false; 8015 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8016 } 8017 8018 /** 8019 * Trigger remote supported features query 8020 */ 8021 8022 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8023 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8024 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8025 } 8026 } 8027 8028 void hci_remote_features_query(hci_con_handle_t con_handle){ 8029 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8030 if (!connection) return; 8031 hci_trigger_remote_features_for_connection(connection); 8032 hci_run(); 8033 } 8034 8035 // GAP API 8036 /** 8037 * @bbrief enable/disable bonding. default is enabled 8038 * @praram enabled 8039 */ 8040 void gap_set_bondable_mode(int enable){ 8041 hci_stack->bondable = enable ? 1 : 0; 8042 } 8043 /** 8044 * @brief Get bondable mode. 8045 * @return 1 if bondable 8046 */ 8047 int gap_get_bondable_mode(void){ 8048 return hci_stack->bondable; 8049 } 8050 8051 /** 8052 * @brief map link keys to security levels 8053 */ 8054 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8055 switch (link_key_type){ 8056 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8057 return LEVEL_4; 8058 case COMBINATION_KEY: 8059 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8060 return LEVEL_3; 8061 default: 8062 return LEVEL_2; 8063 } 8064 } 8065 8066 /** 8067 * @brief map link keys to secure connection yes/no 8068 */ 8069 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8070 switch (link_key_type){ 8071 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8072 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8073 return true; 8074 default: 8075 return false; 8076 } 8077 } 8078 8079 /** 8080 * @brief map link keys to authenticated 8081 */ 8082 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8083 switch (link_key_type){ 8084 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8085 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8086 return true; 8087 default: 8088 return false; 8089 } 8090 } 8091 8092 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8093 log_info("gap_mitm_protection_required_for_security_level %u", level); 8094 return level > LEVEL_2; 8095 } 8096 8097 /** 8098 * @brief get current security level 8099 */ 8100 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8101 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8102 if (!connection) return LEVEL_0; 8103 return gap_security_level_for_connection(connection); 8104 } 8105 8106 /** 8107 * @brief request connection to device to 8108 * @result GAP_AUTHENTICATION_RESULT 8109 */ 8110 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8111 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8112 if (!connection){ 8113 hci_emit_security_level(con_handle, LEVEL_0); 8114 return; 8115 } 8116 8117 btstack_assert(hci_is_le_connection(connection) == false); 8118 8119 // 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) 8120 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8121 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8122 requested_level = LEVEL_4; 8123 } 8124 8125 gap_security_level_t current_level = gap_security_level(con_handle); 8126 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8127 requested_level, connection->requested_security_level, current_level); 8128 8129 // authentication active if authentication request was sent or planned level > 0 8130 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8131 if (authentication_active){ 8132 // authentication already active 8133 if (connection->requested_security_level < requested_level){ 8134 // increase requested level as new level is higher 8135 // TODO: handle re-authentication when done 8136 connection->requested_security_level = requested_level; 8137 } 8138 } else { 8139 // no request active, notify if security sufficient 8140 if (requested_level <= current_level){ 8141 hci_emit_security_level(con_handle, current_level); 8142 return; 8143 } 8144 8145 // store request 8146 connection->requested_security_level = requested_level; 8147 8148 // start to authenticate connection 8149 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8150 8151 // request remote features if not already active, also trigger hci_run 8152 hci_remote_features_query(con_handle); 8153 } 8154 } 8155 8156 /** 8157 * @brief start dedicated bonding with device. disconnect after bonding 8158 * @param device 8159 * @param request MITM protection 8160 * @result GAP_DEDICATED_BONDING_COMPLETE 8161 */ 8162 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8163 8164 // create connection state machine 8165 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8166 8167 if (!connection){ 8168 return BTSTACK_MEMORY_ALLOC_FAILED; 8169 } 8170 8171 // delete link key 8172 gap_drop_link_key_for_bd_addr(device); 8173 8174 // configure LEVEL_2/3, dedicated bonding 8175 connection->state = SEND_CREATE_CONNECTION; 8176 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8177 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8178 connection->bonding_flags = BONDING_DEDICATED; 8179 8180 hci_run(); 8181 8182 return 0; 8183 } 8184 8185 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8186 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8187 if (connection == NULL){ 8188 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8189 } 8190 if (defer){ 8191 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8192 } else { 8193 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8194 // trigger disconnect 8195 hci_run(); 8196 } 8197 return ERROR_CODE_SUCCESS; 8198 } 8199 8200 void gap_set_local_name(const char * local_name){ 8201 hci_stack->local_name = local_name; 8202 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8203 // also update EIR if not set by user 8204 if (hci_stack->eir_data == NULL){ 8205 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8206 } 8207 hci_run(); 8208 } 8209 #endif 8210 8211 8212 #ifdef ENABLE_BLE 8213 8214 #ifdef ENABLE_LE_CENTRAL 8215 void gap_start_scan(void){ 8216 hci_stack->le_scanning_enabled = true; 8217 hci_run(); 8218 } 8219 8220 void gap_stop_scan(void){ 8221 hci_stack->le_scanning_enabled = false; 8222 hci_run(); 8223 } 8224 8225 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8226 hci_stack->le_scan_type = scan_type; 8227 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8228 hci_stack->le_scan_interval = scan_interval; 8229 hci_stack->le_scan_window = scan_window; 8230 hci_stack->le_scanning_param_update = true; 8231 hci_run(); 8232 } 8233 8234 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8235 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8236 } 8237 8238 void gap_set_scan_duplicate_filter(bool enabled){ 8239 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8240 } 8241 8242 void gap_set_scan_phys(uint8_t phys){ 8243 // LE Coded and LE 1M PHY 8244 hci_stack->le_scan_phys = phys & 0x05; 8245 } 8246 8247 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8248 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8249 if (!conn){ 8250 // disallow if le connection is already outgoing 8251 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8252 log_error("le connection already active"); 8253 return ERROR_CODE_COMMAND_DISALLOWED; 8254 } 8255 8256 log_info("gap_connect: no connection exists yet, creating context"); 8257 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8258 if (!conn){ 8259 log_info("gap_connect: failed to alloc hci_connection_t"); 8260 return BTSTACK_MEMORY_ALLOC_FAILED; // don't sent packet to controller 8261 } 8262 8263 // set le connecting state 8264 if (hci_is_le_connection_type(addr_type)){ 8265 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8266 } 8267 8268 conn->state = SEND_CREATE_CONNECTION; 8269 log_info("gap_connect: send create connection next"); 8270 hci_run(); 8271 return ERROR_CODE_SUCCESS; 8272 } 8273 8274 if (!hci_is_le_connection(conn) || 8275 (conn->state == SEND_CREATE_CONNECTION) || 8276 (conn->state == SENT_CREATE_CONNECTION)) { 8277 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8278 log_error("gap_connect: classic connection or connect is already being created"); 8279 return GATT_CLIENT_IN_WRONG_STATE; 8280 } 8281 8282 // check if connection was just disconnected 8283 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8284 log_info("gap_connect: send create connection (again)"); 8285 conn->state = SEND_CREATE_CONNECTION; 8286 hci_run(); 8287 return ERROR_CODE_SUCCESS; 8288 } 8289 8290 log_info("gap_connect: context exists with state %u", conn->state); 8291 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8292 hci_run(); 8293 return ERROR_CODE_SUCCESS; 8294 } 8295 8296 // @assumption: only a single outgoing LE Connection exists 8297 static hci_connection_t * gap_get_outgoing_connection(void){ 8298 btstack_linked_item_t *it; 8299 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8300 hci_connection_t * conn = (hci_connection_t *) it; 8301 if (!hci_is_le_connection(conn)) continue; 8302 switch (conn->state){ 8303 case SEND_CREATE_CONNECTION: 8304 case SENT_CREATE_CONNECTION: 8305 return conn; 8306 default: 8307 break; 8308 }; 8309 } 8310 return NULL; 8311 } 8312 8313 uint8_t gap_connect_cancel(void){ 8314 hci_connection_t * conn; 8315 switch (hci_stack->le_connecting_request){ 8316 case LE_CONNECTING_IDLE: 8317 break; 8318 case LE_CONNECTING_WHITELIST: 8319 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8320 hci_run(); 8321 break; 8322 case LE_CONNECTING_DIRECT: 8323 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8324 conn = gap_get_outgoing_connection(); 8325 if (conn == NULL){ 8326 hci_run(); 8327 } else { 8328 switch (conn->state){ 8329 case SEND_CREATE_CONNECTION: 8330 // skip sending create connection and emit event instead 8331 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8332 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8333 btstack_memory_hci_connection_free( conn ); 8334 break; 8335 case SENT_CREATE_CONNECTION: 8336 // let hci_run_general_gap_le cancel outgoing connection 8337 hci_run(); 8338 break; 8339 default: 8340 break; 8341 } 8342 } 8343 break; 8344 default: 8345 btstack_unreachable(); 8346 break; 8347 } 8348 return ERROR_CODE_SUCCESS; 8349 } 8350 8351 /** 8352 * @brief Set connection parameters for outgoing connections 8353 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8354 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8355 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8356 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8357 * @param conn_latency, default: 4 8358 * @param supervision_timeout (unit: 10ms), default: 720 ms 8359 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8360 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8361 */ 8362 8363 void gap_set_connection_phys(uint8_t phys){ 8364 // LE Coded, LE 1M, LE 2M PHY 8365 hci_stack->le_connection_phys = phys & 7; 8366 } 8367 8368 #endif 8369 8370 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8371 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8372 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8373 hci_stack->le_connection_scan_interval = conn_scan_interval; 8374 hci_stack->le_connection_scan_window = conn_scan_window; 8375 hci_stack->le_connection_interval_min = conn_interval_min; 8376 hci_stack->le_connection_interval_max = conn_interval_max; 8377 hci_stack->le_connection_latency = conn_latency; 8378 hci_stack->le_supervision_timeout = supervision_timeout; 8379 hci_stack->le_minimum_ce_length = min_ce_length; 8380 hci_stack->le_maximum_ce_length = max_ce_length; 8381 } 8382 8383 /** 8384 * @brief Updates the connection parameters for a given LE connection 8385 * @param handle 8386 * @param conn_interval_min (unit: 1.25ms) 8387 * @param conn_interval_max (unit: 1.25ms) 8388 * @param conn_latency 8389 * @param supervision_timeout (unit: 10ms) 8390 * @return 0 if ok 8391 */ 8392 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8393 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8394 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8395 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8396 connection->le_conn_interval_min = conn_interval_min; 8397 connection->le_conn_interval_max = conn_interval_max; 8398 connection->le_conn_latency = conn_latency; 8399 connection->le_supervision_timeout = supervision_timeout; 8400 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8401 hci_run(); 8402 return 0; 8403 } 8404 8405 /** 8406 * @brief Request an update of the connection parameter for a given LE connection 8407 * @param handle 8408 * @param conn_interval_min (unit: 1.25ms) 8409 * @param conn_interval_max (unit: 1.25ms) 8410 * @param conn_latency 8411 * @param supervision_timeout (unit: 10ms) 8412 * @return 0 if ok 8413 */ 8414 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8415 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8416 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8417 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8418 connection->le_conn_interval_min = conn_interval_min; 8419 connection->le_conn_interval_max = conn_interval_max; 8420 connection->le_conn_latency = conn_latency; 8421 connection->le_supervision_timeout = supervision_timeout; 8422 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8423 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8424 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8425 return 0; 8426 } 8427 8428 #ifdef ENABLE_LE_PERIPHERAL 8429 8430 /** 8431 * @brief Set Advertisement Data 8432 * @param advertising_data_length 8433 * @param advertising_data (max 31 octets) 8434 * @note data is not copied, pointer has to stay valid 8435 */ 8436 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8437 hci_stack->le_advertisements_data_len = advertising_data_length; 8438 hci_stack->le_advertisements_data = advertising_data; 8439 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8440 hci_run(); 8441 } 8442 8443 /** 8444 * @brief Set Scan Response Data 8445 * @param advertising_data_length 8446 * @param advertising_data (max 31 octets) 8447 * @note data is not copied, pointer has to stay valid 8448 */ 8449 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8450 hci_stack->le_scan_response_data_len = scan_response_data_length; 8451 hci_stack->le_scan_response_data = scan_response_data; 8452 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8453 hci_run(); 8454 } 8455 8456 /** 8457 * @brief Set Advertisement Parameters 8458 * @param adv_int_min 8459 * @param adv_int_max 8460 * @param adv_type 8461 * @param direct_address_type 8462 * @param direct_address 8463 * @param channel_map 8464 * @param filter_policy 8465 * 8466 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8467 */ 8468 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8469 uint8_t direct_address_typ, bd_addr_t direct_address, 8470 uint8_t channel_map, uint8_t filter_policy) { 8471 8472 hci_stack->le_advertisements_interval_min = adv_int_min; 8473 hci_stack->le_advertisements_interval_max = adv_int_max; 8474 hci_stack->le_advertisements_type = adv_type; 8475 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8476 hci_stack->le_advertisements_channel_map = channel_map; 8477 hci_stack->le_advertisements_filter_policy = filter_policy; 8478 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8479 6); 8480 8481 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8482 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8483 hci_run(); 8484 } 8485 8486 /** 8487 * @brief Enable/Disable Advertisements 8488 * @param enabled 8489 */ 8490 void gap_advertisements_enable(int enabled){ 8491 if (enabled == 0){ 8492 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8493 } else { 8494 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8495 } 8496 hci_update_advertisements_enabled_for_current_roles(); 8497 hci_run(); 8498 } 8499 8500 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8501 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8502 btstack_linked_list_iterator_t it; 8503 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8504 while (btstack_linked_list_iterator_has_next(&it)){ 8505 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8506 if ( item->advertising_handle == advertising_handle ) { 8507 return item; 8508 } 8509 } 8510 return NULL; 8511 } 8512 8513 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8514 hci_stack->le_resolvable_private_address_update_s = update_s; 8515 hci_run(); 8516 return ERROR_CODE_SUCCESS; 8517 } 8518 8519 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8520 // find free advertisement handle 8521 uint8_t advertisement_handle; 8522 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8523 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8524 } 8525 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8526 // clear 8527 memset(storage, 0, sizeof(le_advertising_set_t)); 8528 // copy params 8529 storage->advertising_handle = advertisement_handle; 8530 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8531 // add to list 8532 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8533 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8534 *out_advertising_handle = advertisement_handle; 8535 // set tasks and start 8536 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8537 hci_run(); 8538 return ERROR_CODE_SUCCESS; 8539 } 8540 8541 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8542 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8543 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8544 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8545 // set tasks and start 8546 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8547 hci_run(); 8548 return ERROR_CODE_SUCCESS; 8549 } 8550 8551 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8552 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8553 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8554 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8555 return ERROR_CODE_SUCCESS; 8556 } 8557 8558 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8559 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8560 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8561 memcpy(advertising_set->random_address, random_address, 6); 8562 // set tasks and start 8563 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8564 hci_run(); 8565 return ERROR_CODE_SUCCESS; 8566 } 8567 8568 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8569 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8570 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8571 advertising_set->adv_data = advertising_data; 8572 advertising_set->adv_data_len = advertising_data_length; 8573 // set tasks and start 8574 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8575 hci_run(); 8576 return ERROR_CODE_SUCCESS; 8577 } 8578 8579 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){ 8580 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8581 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8582 advertising_set->scan_data = scan_response_data; 8583 advertising_set->scan_data_len = scan_response_data_length; 8584 // set tasks and start 8585 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8586 hci_run(); 8587 return ERROR_CODE_SUCCESS; 8588 } 8589 8590 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8591 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8592 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8593 advertising_set->enable_timeout = timeout; 8594 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8595 // set tasks and start 8596 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8597 hci_run(); 8598 return ERROR_CODE_SUCCESS; 8599 } 8600 8601 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8602 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8603 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8604 // set tasks and start 8605 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8606 hci_run(); 8607 return ERROR_CODE_SUCCESS; 8608 } 8609 8610 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8611 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8612 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8613 // set tasks and start 8614 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8615 hci_run(); 8616 return ERROR_CODE_SUCCESS; 8617 } 8618 8619 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8620 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8621 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8622 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8623 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8624 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8625 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8626 // set tasks and start 8627 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8628 hci_run(); 8629 return ERROR_CODE_SUCCESS; 8630 } 8631 8632 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8633 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8634 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8635 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8636 return ERROR_CODE_SUCCESS; 8637 } 8638 8639 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8640 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8641 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8642 advertising_set->periodic_data = periodic_data; 8643 advertising_set->periodic_data_len = periodic_data_length; 8644 // set tasks and start 8645 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8646 hci_run(); 8647 return ERROR_CODE_SUCCESS; 8648 } 8649 8650 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8651 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8652 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8653 // set tasks and start 8654 advertising_set->periodic_include_adi = include_adi; 8655 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8656 hci_run(); 8657 return ERROR_CODE_SUCCESS; 8658 } 8659 8660 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8661 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8662 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8663 // set tasks and start 8664 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8665 hci_run(); 8666 return ERROR_CODE_SUCCESS; 8667 } 8668 8669 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8670 hci_stack->le_past_mode = mode; 8671 hci_stack->le_past_skip = skip; 8672 hci_stack->le_past_sync_timeout = sync_timeout; 8673 hci_stack->le_past_cte_type = cte_type; 8674 hci_stack->le_past_set_default_params = true; 8675 hci_run(); 8676 return ERROR_CODE_SUCCESS; 8677 } 8678 8679 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8680 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8681 if (hci_connection == NULL){ 8682 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8683 } 8684 hci_connection->le_past_sync_handle = sync_handle; 8685 hci_connection->le_past_service_data = service_data; 8686 hci_run(); 8687 return ERROR_CODE_SUCCESS; 8688 } 8689 8690 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8691 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8692 if (hci_connection == NULL){ 8693 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8694 } 8695 hci_connection->le_past_advertising_handle = advertising_handle; 8696 hci_connection->le_past_service_data = service_data; 8697 hci_run(); 8698 return ERROR_CODE_SUCCESS; 8699 } 8700 8701 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8702 8703 #endif 8704 8705 #endif 8706 8707 void hci_le_set_own_address_type(uint8_t own_address_type){ 8708 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8709 if (own_address_type == hci_stack->le_own_addr_type) return; 8710 hci_stack->le_own_addr_type = own_address_type; 8711 8712 #ifdef ENABLE_LE_PERIPHERAL 8713 // update advertisement parameters, too 8714 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8715 hci_run(); 8716 #endif 8717 #ifdef ENABLE_LE_CENTRAL 8718 // note: we don't update scan parameters or modify ongoing connection attempts 8719 #endif 8720 } 8721 8722 void hci_le_random_address_set(const bd_addr_t random_address){ 8723 memcpy(hci_stack->le_random_address, random_address, 6); 8724 hci_stack->le_random_address_set = true; 8725 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8726 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8727 if (hci_extended_advertising_supported()){ 8728 // force advertising set creation for LE Set Advertising Set Random Address 8729 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8730 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8731 } 8732 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8733 } 8734 #endif 8735 hci_run(); 8736 } 8737 8738 #endif 8739 8740 uint8_t gap_disconnect(hci_con_handle_t handle){ 8741 hci_connection_t * conn = hci_connection_for_handle(handle); 8742 if (!conn){ 8743 hci_emit_disconnection_complete(handle, 0); 8744 return 0; 8745 } 8746 // ignore if already disconnected 8747 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8748 return 0; 8749 } 8750 conn->state = SEND_DISCONNECT; 8751 hci_run(); 8752 return 0; 8753 } 8754 8755 int gap_read_rssi(hci_con_handle_t con_handle){ 8756 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8757 if (hci_connection == NULL) return 0; 8758 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8759 hci_run(); 8760 return 1; 8761 } 8762 8763 /** 8764 * @brief Get connection type 8765 * @param con_handle 8766 * @result connection_type 8767 */ 8768 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8769 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8770 if (!conn) return GAP_CONNECTION_INVALID; 8771 switch (conn->address_type){ 8772 case BD_ADDR_TYPE_LE_PUBLIC: 8773 case BD_ADDR_TYPE_LE_RANDOM: 8774 return GAP_CONNECTION_LE; 8775 case BD_ADDR_TYPE_SCO: 8776 return GAP_CONNECTION_SCO; 8777 case BD_ADDR_TYPE_ACL: 8778 return GAP_CONNECTION_ACL; 8779 default: 8780 return GAP_CONNECTION_INVALID; 8781 } 8782 } 8783 8784 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8785 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8786 if (!conn) return HCI_ROLE_INVALID; 8787 return (hci_role_t) conn->role; 8788 } 8789 8790 8791 #ifdef ENABLE_CLASSIC 8792 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8793 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8794 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8795 conn->request_role = role; 8796 hci_run(); 8797 return ERROR_CODE_SUCCESS; 8798 } 8799 #endif 8800 8801 #ifdef ENABLE_BLE 8802 8803 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){ 8804 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8805 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8806 8807 conn->le_phy_update_all_phys = all_phys; 8808 conn->le_phy_update_tx_phys = tx_phys; 8809 conn->le_phy_update_rx_phys = rx_phys; 8810 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8811 8812 hci_run(); 8813 8814 return 0; 8815 } 8816 8817 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8818 8819 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 8820 // incorrect configuration: 8821 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 8822 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 8823 btstack_assert(false); 8824 #endif 8825 8826 // check if already in list 8827 btstack_linked_list_iterator_t it; 8828 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8829 while (btstack_linked_list_iterator_has_next(&it)) { 8830 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8831 if (entry->address_type != address_type) { 8832 continue; 8833 } 8834 if (memcmp(entry->address, address, 6) != 0) { 8835 continue; 8836 } 8837 8838 // if already on controller: 8839 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8840 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8841 // drop remove request 8842 entry->state = LE_WHITELIST_ON_CONTROLLER; 8843 return ERROR_CODE_SUCCESS; 8844 } else { 8845 // disallow as already on controller 8846 return ERROR_CODE_COMMAND_DISALLOWED; 8847 } 8848 } 8849 8850 // assume scheduled to add 8851 return ERROR_CODE_COMMAND_DISALLOWED; 8852 } 8853 8854 // alloc and add to list 8855 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8856 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8857 entry->address_type = address_type; 8858 (void)memcpy(entry->address, address, 6); 8859 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8860 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8861 return ERROR_CODE_SUCCESS; 8862 } 8863 8864 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8865 btstack_linked_list_iterator_t it; 8866 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8867 while (btstack_linked_list_iterator_has_next(&it)){ 8868 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8869 if (entry->address_type != address_type) { 8870 continue; 8871 } 8872 if (memcmp(entry->address, address, 6) != 0) { 8873 continue; 8874 } 8875 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8876 // remove from controller if already present 8877 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8878 } else { 8879 // directly remove entry from whitelist 8880 btstack_linked_list_iterator_remove(&it); 8881 btstack_memory_whitelist_entry_free(entry); 8882 } 8883 return ERROR_CODE_SUCCESS; 8884 } 8885 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8886 } 8887 8888 static void hci_whitelist_clear(void){ 8889 btstack_linked_list_iterator_t it; 8890 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8891 while (btstack_linked_list_iterator_has_next(&it)){ 8892 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8893 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8894 // remove from controller if already present 8895 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8896 continue; 8897 } 8898 // directly remove entry from whitelist 8899 btstack_linked_list_iterator_remove(&it); 8900 btstack_memory_whitelist_entry_free(entry); 8901 } 8902 } 8903 8904 /** 8905 * @brief Clear Whitelist 8906 * @return 0 if ok 8907 */ 8908 uint8_t gap_whitelist_clear(void){ 8909 hci_whitelist_clear(); 8910 hci_run(); 8911 return ERROR_CODE_SUCCESS; 8912 } 8913 8914 /** 8915 * @brief Add Device to Whitelist 8916 * @param address_typ 8917 * @param address 8918 * @return 0 if ok 8919 */ 8920 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8921 uint8_t status = hci_whitelist_add(address_type, address); 8922 if (status){ 8923 return status; 8924 } 8925 hci_run(); 8926 return ERROR_CODE_SUCCESS; 8927 } 8928 8929 /** 8930 * @brief Remove Device from Whitelist 8931 * @param address_typ 8932 * @param address 8933 * @return 0 if ok 8934 */ 8935 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8936 uint8_t status = hci_whitelist_remove(address_type, address); 8937 if (status){ 8938 return status; 8939 } 8940 hci_run(); 8941 return ERROR_CODE_SUCCESS; 8942 } 8943 8944 #ifdef ENABLE_LE_CENTRAL 8945 /** 8946 * @brief Connect with Whitelist 8947 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8948 * @return - if ok 8949 */ 8950 uint8_t gap_connect_with_whitelist(void){ 8951 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8952 return ERROR_CODE_COMMAND_DISALLOWED; 8953 } 8954 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8955 hci_run(); 8956 return ERROR_CODE_SUCCESS; 8957 } 8958 8959 /** 8960 * @brief Auto Connection Establishment - Start Connecting to device 8961 * @param address_typ 8962 * @param address 8963 * @return 0 if ok 8964 */ 8965 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8966 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8967 return ERROR_CODE_COMMAND_DISALLOWED; 8968 } 8969 8970 uint8_t status = hci_whitelist_add(address_type, address); 8971 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8972 return status; 8973 } 8974 8975 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8976 8977 hci_run(); 8978 return ERROR_CODE_SUCCESS; 8979 } 8980 8981 /** 8982 * @brief Auto Connection Establishment - Stop Connecting to device 8983 * @param address_typ 8984 * @param address 8985 * @return 0 if ok 8986 */ 8987 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8988 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8989 return ERROR_CODE_COMMAND_DISALLOWED; 8990 } 8991 8992 hci_whitelist_remove(address_type, address); 8993 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8994 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8995 } 8996 hci_run(); 8997 return 0; 8998 } 8999 9000 /** 9001 * @brief Auto Connection Establishment - Stop everything 9002 * @note Convenience function to stop all active auto connection attempts 9003 */ 9004 uint8_t gap_auto_connection_stop_all(void){ 9005 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9006 return ERROR_CODE_COMMAND_DISALLOWED; 9007 } 9008 hci_whitelist_clear(); 9009 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9010 hci_run(); 9011 return ERROR_CODE_SUCCESS; 9012 } 9013 9014 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9015 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9016 if (!conn) return 0; 9017 return conn->le_connection_interval; 9018 } 9019 #endif 9020 #endif 9021 9022 #ifdef ENABLE_CLASSIC 9023 /** 9024 * @brief Set Extended Inquiry Response data 9025 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9026 * @note has to be done before stack starts up 9027 */ 9028 void gap_set_extended_inquiry_response(const uint8_t * data){ 9029 hci_stack->eir_data = data; 9030 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9031 hci_run(); 9032 } 9033 9034 /** 9035 * @brief Start GAP Classic Inquiry 9036 * @param duration in 1.28s units 9037 * @return 0 if ok 9038 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9039 */ 9040 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9041 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9042 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9043 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9044 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9045 } 9046 hci_stack->inquiry_state = duration_in_1280ms_units; 9047 hci_stack->inquiry_max_period_length = 0; 9048 hci_stack->inquiry_min_period_length = 0; 9049 hci_run(); 9050 return 0; 9051 } 9052 9053 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9054 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9055 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9056 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9057 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9058 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9059 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9060 9061 hci_stack->inquiry_state = duration; 9062 hci_stack->inquiry_max_period_length = max_period_length; 9063 hci_stack->inquiry_min_period_length = min_period_length; 9064 hci_run(); 9065 return 0; 9066 } 9067 9068 /** 9069 * @brief Stop GAP Classic Inquiry 9070 * @return 0 if ok 9071 */ 9072 int gap_inquiry_stop(void){ 9073 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9074 // emit inquiry complete event, before it even started 9075 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9076 hci_emit_event(event, sizeof(event), 1); 9077 return 0; 9078 } 9079 switch (hci_stack->inquiry_state){ 9080 case GAP_INQUIRY_STATE_ACTIVE: 9081 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9082 hci_run(); 9083 return ERROR_CODE_SUCCESS; 9084 case GAP_INQUIRY_STATE_PERIODIC: 9085 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9086 hci_run(); 9087 return ERROR_CODE_SUCCESS; 9088 default: 9089 return ERROR_CODE_COMMAND_DISALLOWED; 9090 } 9091 } 9092 9093 void gap_inquiry_set_lap(uint32_t lap){ 9094 hci_stack->inquiry_lap = lap; 9095 } 9096 9097 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9098 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9099 hci_stack->inquiry_scan_window = inquiry_scan_window; 9100 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9101 hci_run(); 9102 } 9103 9104 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9105 { 9106 hci_stack->inquiry_tx_power_level = tx_power; 9107 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9108 hci_run(); 9109 } 9110 9111 9112 /** 9113 * @brief Remote Name Request 9114 * @param addr 9115 * @param page_scan_repetition_mode 9116 * @param clock_offset only used when bit 15 is set 9117 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9118 */ 9119 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9120 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9121 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9122 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9123 hci_stack->remote_name_clock_offset = clock_offset; 9124 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9125 hci_run(); 9126 return 0; 9127 } 9128 9129 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9130 hci_stack->gap_pairing_state = state; 9131 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9132 hci_run(); 9133 return 0; 9134 } 9135 9136 /** 9137 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9138 * @param addr 9139 * @param pin_data 9140 * @param pin_len 9141 * @return 0 if ok 9142 */ 9143 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9144 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9145 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9146 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9147 hci_stack->gap_pairing_pin_len = pin_len; 9148 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9149 } 9150 9151 /** 9152 * @brief Legacy Pairing Pin Code Response 9153 * @param addr 9154 * @param pin 9155 * @return 0 if ok 9156 */ 9157 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9158 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9159 } 9160 9161 /** 9162 * @brief Abort Legacy Pairing 9163 * @param addr 9164 * @param pin 9165 * @return 0 if ok 9166 */ 9167 int gap_pin_code_negative(bd_addr_t addr){ 9168 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9169 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9170 } 9171 9172 /** 9173 * @brief SSP Passkey Response 9174 * @param addr 9175 * @param passkey 9176 * @return 0 if ok 9177 */ 9178 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9179 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9180 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9181 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9182 } 9183 9184 /** 9185 * @brief Abort SSP Passkey Entry/Pairing 9186 * @param addr 9187 * @param pin 9188 * @return 0 if ok 9189 */ 9190 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9191 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9192 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9193 } 9194 9195 /** 9196 * @brief Accept SSP Numeric Comparison 9197 * @param addr 9198 * @param passkey 9199 * @return 0 if ok 9200 */ 9201 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9202 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9203 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9204 } 9205 9206 /** 9207 * @brief Abort SSP Numeric Comparison/Pairing 9208 * @param addr 9209 * @param pin 9210 * @return 0 if ok 9211 */ 9212 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9213 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9214 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9215 } 9216 9217 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9218 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9219 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9220 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9221 connectionSetAuthenticationFlags(conn, flag); 9222 hci_run(); 9223 return ERROR_CODE_SUCCESS; 9224 } 9225 #endif 9226 9227 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9228 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9229 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9230 } 9231 9232 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9233 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9234 } 9235 #endif 9236 9237 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9238 /** 9239 * @brief Report Remote OOB Data 9240 * @param bd_addr 9241 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9242 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9243 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9244 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9245 */ 9246 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){ 9247 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9248 if (connection == NULL) { 9249 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9250 } 9251 connection->classic_oob_c_192 = c_192; 9252 connection->classic_oob_r_192 = r_192; 9253 9254 // ignore P-256 if not supported by us 9255 if (hci_stack->secure_connections_active){ 9256 connection->classic_oob_c_256 = c_256; 9257 connection->classic_oob_r_256 = r_256; 9258 } 9259 9260 return ERROR_CODE_SUCCESS; 9261 } 9262 /** 9263 * @brief Generate new OOB data 9264 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9265 */ 9266 void gap_ssp_generate_oob_data(void){ 9267 hci_stack->classic_read_local_oob_data = true; 9268 hci_run(); 9269 } 9270 9271 #endif 9272 9273 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9274 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9275 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9276 if (connection == NULL) { 9277 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9278 } 9279 9280 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9281 connection->link_key_type = type; 9282 9283 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9284 } 9285 9286 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9287 /** 9288 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9289 * @param inquiry_mode see bluetooth_defines.h 9290 */ 9291 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9292 hci_stack->inquiry_mode = inquiry_mode; 9293 } 9294 9295 /** 9296 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9297 */ 9298 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9299 hci_stack->sco_voice_setting = voice_setting; 9300 } 9301 9302 /** 9303 * @brief Get SCO Voice Setting 9304 * @return current voice setting 9305 */ 9306 uint16_t hci_get_sco_voice_setting(void){ 9307 return hci_stack->sco_voice_setting; 9308 } 9309 9310 static int hci_have_usb_transport(void){ 9311 if (!hci_stack->hci_transport) return 0; 9312 const char * transport_name = hci_stack->hci_transport->name; 9313 if (!transport_name) return 0; 9314 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9315 } 9316 9317 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9318 uint16_t sco_packet_length = 0; 9319 9320 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9321 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9322 int multiplier; 9323 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9324 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9325 multiplier = 2; 9326 } else { 9327 multiplier = 1; 9328 } 9329 #endif 9330 9331 #ifdef ENABLE_SCO_OVER_HCI 9332 if (hci_have_usb_transport()){ 9333 // see Core Spec for H2 USB Transfer. 9334 // 3 byte SCO header + 24 bytes per connection 9335 // @note multiple sco connections not supported currently 9336 sco_packet_length = 3 + 24 * multiplier; 9337 } else { 9338 // 3 byte SCO header + SCO packet length over the air 9339 sco_packet_length = 3 + payload_size * multiplier; 9340 // assert that it still fits inside an SCO buffer 9341 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9342 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9343 } 9344 } 9345 #endif 9346 #ifdef HAVE_SCO_TRANSPORT 9347 // 3 byte SCO header + SCO packet length over the air 9348 sco_packet_length = 3 + payload_size * multiplier; 9349 // assert that it still fits inside an SCO buffer 9350 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9351 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9352 } 9353 #endif 9354 return sco_packet_length; 9355 } 9356 9357 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9358 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9359 if (connection != NULL){ 9360 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9361 } 9362 return 0; 9363 } 9364 9365 uint16_t hci_get_sco_packet_length(void){ 9366 btstack_linked_list_iterator_t it; 9367 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9368 while (btstack_linked_list_iterator_has_next(&it)){ 9369 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9370 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9371 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9372 } 9373 } 9374 return 0; 9375 } 9376 9377 /** 9378 * @brief Sets the master/slave policy 9379 * @param policy (0: attempt to become master, 1: let connecting device decide) 9380 */ 9381 void hci_set_master_slave_policy(uint8_t policy){ 9382 hci_stack->master_slave_policy = policy; 9383 } 9384 9385 #endif 9386 9387 HCI_STATE hci_get_state(void){ 9388 return hci_stack->state; 9389 } 9390 9391 #ifdef ENABLE_CLASSIC 9392 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9393 hci_stack->gap_classic_accept_callback = accept_callback; 9394 } 9395 #endif 9396 9397 /** 9398 * @brief Set callback for Bluetooth Hardware Error 9399 */ 9400 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9401 hci_stack->hardware_error_callback = fn; 9402 } 9403 9404 void hci_disconnect_all(void){ 9405 btstack_linked_list_iterator_t it; 9406 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9407 while (btstack_linked_list_iterator_has_next(&it)){ 9408 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9409 if (con->state == SENT_DISCONNECT) continue; 9410 con->state = SEND_DISCONNECT; 9411 } 9412 hci_run(); 9413 } 9414 9415 uint16_t hci_get_manufacturer(void){ 9416 return hci_stack->manufacturer; 9417 } 9418 9419 #ifdef ENABLE_BLE 9420 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9421 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9422 if (!hci_con) return NULL; 9423 return &hci_con->sm_connection; 9424 } 9425 9426 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9427 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9428 #endif 9429 9430 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9431 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9432 if (hci_connection == NULL) return 0; 9433 if (hci_is_le_connection(hci_connection)){ 9434 #ifdef ENABLE_BLE 9435 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9436 if (sm_conn->sm_connection_encrypted) { 9437 return sm_conn->sm_actual_encryption_key_size; 9438 } 9439 #endif 9440 } else { 9441 #ifdef ENABLE_CLASSIC 9442 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9443 return hci_connection->encryption_key_size; 9444 } 9445 #endif 9446 } 9447 return 0; 9448 } 9449 9450 bool gap_authenticated(hci_con_handle_t con_handle){ 9451 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9452 if (hci_connection == NULL) return false; 9453 9454 switch (hci_connection->address_type){ 9455 #ifdef ENABLE_BLE 9456 case BD_ADDR_TYPE_LE_PUBLIC: 9457 case BD_ADDR_TYPE_LE_RANDOM: 9458 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9459 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9460 #endif 9461 #ifdef ENABLE_CLASSIC 9462 case BD_ADDR_TYPE_SCO: 9463 case BD_ADDR_TYPE_ACL: 9464 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9465 #endif 9466 default: 9467 return false; 9468 } 9469 } 9470 9471 bool gap_secure_connection(hci_con_handle_t con_handle){ 9472 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9473 if (hci_connection == NULL) return 0; 9474 9475 switch (hci_connection->address_type){ 9476 #ifdef ENABLE_BLE 9477 case BD_ADDR_TYPE_LE_PUBLIC: 9478 case BD_ADDR_TYPE_LE_RANDOM: 9479 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9480 return hci_connection->sm_connection.sm_connection_sc != 0; 9481 #endif 9482 #ifdef ENABLE_CLASSIC 9483 case BD_ADDR_TYPE_SCO: 9484 case BD_ADDR_TYPE_ACL: 9485 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9486 #endif 9487 default: 9488 return false; 9489 } 9490 } 9491 9492 bool gap_bonded(hci_con_handle_t con_handle){ 9493 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9494 if (hci_connection == NULL) return 0; 9495 9496 #ifdef ENABLE_CLASSIC 9497 link_key_t link_key; 9498 link_key_type_t link_key_type; 9499 #endif 9500 switch (hci_connection->address_type){ 9501 #ifdef ENABLE_BLE 9502 case BD_ADDR_TYPE_LE_PUBLIC: 9503 case BD_ADDR_TYPE_LE_RANDOM: 9504 return hci_connection->sm_connection.sm_le_db_index >= 0; 9505 #endif 9506 #ifdef ENABLE_CLASSIC 9507 case BD_ADDR_TYPE_SCO: 9508 case BD_ADDR_TYPE_ACL: 9509 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9510 #endif 9511 default: 9512 return false; 9513 } 9514 } 9515 9516 #ifdef ENABLE_BLE 9517 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9518 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9519 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9520 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9521 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9522 return sm_conn->sm_connection_authorization_state; 9523 } 9524 #endif 9525 9526 #ifdef ENABLE_CLASSIC 9527 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){ 9528 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9529 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9530 conn->sniff_min_interval = sniff_min_interval; 9531 conn->sniff_max_interval = sniff_max_interval; 9532 conn->sniff_attempt = sniff_attempt; 9533 conn->sniff_timeout = sniff_timeout; 9534 hci_run(); 9535 return 0; 9536 } 9537 9538 /** 9539 * @brief Exit Sniff mode 9540 * @param con_handle 9541 @ @return 0 if ok 9542 */ 9543 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9544 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9545 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9546 conn->sniff_min_interval = 0xffff; 9547 hci_run(); 9548 return 0; 9549 } 9550 9551 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){ 9552 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9553 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9554 conn->sniff_subrating_max_latency = max_latency; 9555 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9556 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9557 hci_run(); 9558 return ERROR_CODE_SUCCESS; 9559 } 9560 9561 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){ 9562 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9563 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9564 conn->qos_service_type = service_type; 9565 conn->qos_token_rate = token_rate; 9566 conn->qos_peak_bandwidth = peak_bandwidth; 9567 conn->qos_latency = latency; 9568 conn->qos_delay_variation = delay_variation; 9569 hci_run(); 9570 return ERROR_CODE_SUCCESS; 9571 } 9572 9573 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9574 hci_stack->new_page_scan_interval = page_scan_interval; 9575 hci_stack->new_page_scan_window = page_scan_window; 9576 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9577 hci_run(); 9578 } 9579 9580 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9581 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9582 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9583 hci_run(); 9584 } 9585 9586 void gap_set_page_timeout(uint16_t page_timeout){ 9587 hci_stack->page_timeout = page_timeout; 9588 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9589 hci_run(); 9590 } 9591 9592 #endif 9593 9594 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9595 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9596 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9597 if (le_device_db_index >= le_device_db_max_count()) return; 9598 uint8_t offset = le_device_db_index >> 3; 9599 uint8_t mask = 1 << (le_device_db_index & 7); 9600 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9601 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9602 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9603 // note: go back to remove entries, otherwise, a remove + add will skip the add 9604 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9605 } 9606 } 9607 9608 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9609 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9610 if (le_device_db_index >= le_device_db_max_count()) return; 9611 uint8_t offset = le_device_db_index >> 3; 9612 uint8_t mask = 1 << (le_device_db_index & 7); 9613 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9614 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9615 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9616 } 9617 } 9618 9619 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9620 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9621 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9622 } 9623 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9624 // restart le resolving list update 9625 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9626 } 9627 return ERROR_CODE_SUCCESS; 9628 } 9629 9630 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9631 hci_stack->le_privacy_mode = privacy_mode; 9632 } 9633 #endif 9634 9635 #ifdef ENABLE_BLE 9636 #ifdef ENABLE_LE_CENTRAL 9637 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9638 9639 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9640 9641 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9642 // incorrect configuration: 9643 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9644 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9645 btstack_assert(false); 9646 #endif 9647 9648 // check if already in list 9649 btstack_linked_list_iterator_t it; 9650 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9651 while (btstack_linked_list_iterator_has_next(&it)) { 9652 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9653 if (entry->sid != advertising_sid) { 9654 continue; 9655 } 9656 if (entry->address_type != address_type) { 9657 continue; 9658 } 9659 if (memcmp(entry->address, address, 6) != 0) { 9660 continue; 9661 } 9662 // disallow if already scheduled to add 9663 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9664 return ERROR_CODE_COMMAND_DISALLOWED; 9665 } 9666 // still on controller, but scheduled to remove -> re-add 9667 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9668 return ERROR_CODE_SUCCESS; 9669 } 9670 // alloc and add to list 9671 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9672 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9673 entry->sid = advertising_sid; 9674 entry->address_type = address_type; 9675 (void)memcpy(entry->address, address, 6); 9676 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9677 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9678 return ERROR_CODE_SUCCESS; 9679 } 9680 9681 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9682 btstack_linked_list_iterator_t it; 9683 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9684 while (btstack_linked_list_iterator_has_next(&it)){ 9685 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9686 if (entry->sid != advertising_sid) { 9687 continue; 9688 } 9689 if (entry->address_type != address_type) { 9690 continue; 9691 } 9692 if (memcmp(entry->address, address, 6) != 0) { 9693 continue; 9694 } 9695 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9696 // remove from controller if already present 9697 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9698 } else { 9699 // directly remove entry from whitelist 9700 btstack_linked_list_iterator_remove(&it); 9701 btstack_memory_periodic_advertiser_list_entry_free(entry); 9702 } 9703 return ERROR_CODE_SUCCESS; 9704 } 9705 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9706 } 9707 9708 static void hci_periodic_advertiser_list_clear(void){ 9709 btstack_linked_list_iterator_t it; 9710 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9711 while (btstack_linked_list_iterator_has_next(&it)){ 9712 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9713 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9714 // remove from controller if already present 9715 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9716 continue; 9717 } 9718 // directly remove entry from whitelist 9719 btstack_linked_list_iterator_remove(&it); 9720 btstack_memory_periodic_advertiser_list_entry_free(entry); 9721 } 9722 } 9723 9724 uint8_t gap_periodic_advertiser_list_clear(void){ 9725 hci_periodic_advertiser_list_clear(); 9726 hci_run(); 9727 return ERROR_CODE_SUCCESS; 9728 } 9729 9730 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9731 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9732 if (status){ 9733 return status; 9734 } 9735 hci_run(); 9736 return ERROR_CODE_SUCCESS; 9737 } 9738 9739 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9740 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9741 if (status){ 9742 return status; 9743 } 9744 hci_run(); 9745 return ERROR_CODE_SUCCESS; 9746 } 9747 9748 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9749 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9750 // abort if already active 9751 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9752 return ERROR_CODE_COMMAND_DISALLOWED; 9753 } 9754 // store request 9755 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9756 hci_stack->le_periodic_sync_options = options; 9757 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9758 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9759 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9760 hci_stack->le_periodic_sync_skip = skip; 9761 hci_stack->le_periodic_sync_timeout = sync_timeout; 9762 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9763 9764 hci_run(); 9765 return ERROR_CODE_SUCCESS; 9766 } 9767 9768 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9769 // abort if not requested 9770 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9771 return ERROR_CODE_COMMAND_DISALLOWED; 9772 } 9773 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9774 hci_run(); 9775 return ERROR_CODE_SUCCESS; 9776 } 9777 9778 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9779 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9780 return ERROR_CODE_COMMAND_DISALLOWED; 9781 } 9782 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9783 hci_run(); 9784 return ERROR_CODE_SUCCESS; 9785 } 9786 9787 #endif 9788 #endif 9789 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9790 static hci_iso_stream_t * 9791 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9792 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9793 if (iso_stream != NULL){ 9794 iso_stream->iso_type = iso_type; 9795 iso_stream->state = state; 9796 iso_stream->group_id = group_id; 9797 iso_stream->stream_id = stream_id; 9798 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9799 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9800 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9801 } 9802 return iso_stream; 9803 } 9804 9805 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9806 btstack_linked_list_iterator_t it; 9807 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9808 while (btstack_linked_list_iterator_has_next(&it)){ 9809 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9810 if (iso_stream->cis_handle == con_handle ) { 9811 return iso_stream; 9812 } 9813 } 9814 return NULL; 9815 } 9816 9817 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9818 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9819 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9820 btstack_memory_hci_iso_stream_free(iso_stream); 9821 } 9822 9823 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9824 btstack_linked_list_iterator_t it; 9825 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9826 while (btstack_linked_list_iterator_has_next(&it)){ 9827 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9828 if ((iso_stream->group_id == group_id) && 9829 (iso_stream->iso_type == iso_type)){ 9830 btstack_linked_list_iterator_remove(&it); 9831 btstack_memory_hci_iso_stream_free(iso_stream); 9832 } 9833 } 9834 } 9835 9836 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9837 btstack_linked_list_iterator_t it; 9838 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9839 while (btstack_linked_list_iterator_has_next(&it)){ 9840 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9841 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9842 (iso_stream->group_id == group_id)){ 9843 btstack_linked_list_iterator_remove(&it); 9844 btstack_memory_hci_iso_stream_free(iso_stream); 9845 } 9846 } 9847 } 9848 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9849 btstack_linked_list_iterator_t it; 9850 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9851 while (btstack_linked_list_iterator_has_next(&it)){ 9852 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9853 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9854 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9855 } 9856 } 9857 } 9858 9859 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9860 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9861 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9862 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9863 return (sdu_len_offset + 2 + sdu_len) == size; 9864 } 9865 9866 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 9867 if (iso_stream == NULL){ 9868 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 9869 return; 9870 } 9871 9872 if (hci_stack->iso_packet_handler == NULL) { 9873 return; 9874 } 9875 9876 // parse header 9877 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 9878 uint16_t data_total_length = little_endian_read_16(packet, 2); 9879 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 9880 9881 // assert packet is complete 9882 if ((data_total_length + 4u) != size){ 9883 return; 9884 } 9885 9886 if ((pb_flag & 0x01) == 0){ 9887 if (pb_flag == 0x02){ 9888 // The ISO_SDU_Fragment field contains a header and a complete SDU. 9889 if (hci_iso_sdu_complete(packet, size)) { 9890 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9891 } 9892 } else { 9893 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9894 if (size > sizeof(iso_stream->reassembly_buffer)){ 9895 return; 9896 } 9897 memcpy(iso_stream->reassembly_buffer, packet, size); 9898 // fix pb_flag 9899 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9900 iso_stream->reassembly_pos = size; 9901 } 9902 } else { 9903 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 9904 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 9905 if (ts_flag != 0){ 9906 return; 9907 } 9908 // append fragment 9909 if (iso_stream->reassembly_pos == 0){ 9910 return; 9911 } 9912 9913 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 9914 // reset reassembly buffer 9915 iso_stream->reassembly_pos = 0; 9916 return; 9917 } 9918 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 9919 iso_stream->reassembly_pos += data_total_length; 9920 9921 // deliver if last fragment and SDU complete 9922 if (pb_flag == 0x03){ 9923 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9924 // fix data_total_length 9925 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 9926 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9927 } 9928 // reset reassembly buffer 9929 iso_stream->reassembly_pos = 0; 9930 } 9931 } 9932 } 9933 9934 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9935 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9936 uint16_t pos = 0; 9937 event[pos++] = HCI_EVENT_META_GAP; 9938 event[pos++] = 4 + (2 * big->num_bis); 9939 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9940 event[pos++] = status; 9941 event[pos++] = big->big_handle; 9942 event[pos++] = big->num_bis; 9943 uint8_t i; 9944 for (i=0;i<big->num_bis;i++){ 9945 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9946 pos += 2; 9947 } 9948 hci_emit_event(event, pos, 0); 9949 } 9950 9951 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9952 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9953 uint16_t pos = 0; 9954 event[pos++] = HCI_EVENT_META_GAP; 9955 event[pos++] = 4 + (2 * cig->num_cis); 9956 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9957 event[pos++] = status; 9958 event[pos++] = cig->cig_id; 9959 event[pos++] = cig->num_cis; 9960 uint8_t i; 9961 for (i=0;i<cig->num_cis;i++){ 9962 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9963 pos += 2; 9964 } 9965 hci_emit_event(event, pos, 0); 9966 } 9967 9968 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 9969 uint16_t pos = 0; 9970 event[pos++] = HCI_EVENT_META_GAP; 9971 event[pos++] = 8; 9972 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9973 event[pos++] = status; 9974 event[pos++] = iso_stream->group_id; 9975 event[pos++] = iso_stream->stream_id; 9976 little_endian_store_16(event, pos, iso_stream->cis_handle); 9977 pos += 2; 9978 little_endian_store_16(event, pos, iso_stream->acl_handle); 9979 pos += 2; 9980 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 9981 pos += 2; 9982 event[pos++] = iso_stream->number_of_subevents; 9983 event[pos++] = iso_stream->burst_number_c_to_p; 9984 event[pos++] = iso_stream->burst_number_p_to_c; 9985 event[pos++] = iso_stream->flush_timeout_c_to_p; 9986 event[pos++] = iso_stream->flush_timeout_p_to_c; 9987 return pos; 9988 } 9989 9990 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9991 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9992 // cache data before finalizing struct 9993 uint8_t event [17]; 9994 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 9995 btstack_assert(pos <= sizeof(event)); 9996 if (status != ERROR_CODE_SUCCESS){ 9997 hci_iso_stream_finalize(iso_stream); 9998 } 9999 hci_emit_event(event, pos, 0); 10000 } 10001 10002 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10003 uint8_t event [4]; 10004 uint16_t pos = 0; 10005 event[pos++] = HCI_EVENT_META_GAP; 10006 event[pos++] = 2; 10007 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10008 event[pos++] = big->big_handle; 10009 hci_emit_event(event, pos, 0); 10010 } 10011 10012 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10013 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10014 uint16_t pos = 0; 10015 event[pos++] = HCI_EVENT_META_GAP; 10016 event[pos++] = 4; 10017 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10018 event[pos++] = status; 10019 event[pos++] = big_sync->big_handle; 10020 event[pos++] = big_sync->num_bis; 10021 uint8_t i; 10022 for (i=0;i<big_sync->num_bis;i++){ 10023 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10024 pos += 2; 10025 } 10026 hci_emit_event(event, pos, 0); 10027 } 10028 10029 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10030 uint8_t event [4]; 10031 uint16_t pos = 0; 10032 event[pos++] = HCI_EVENT_META_GAP; 10033 event[pos++] = 2; 10034 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10035 event[pos++] = big_handle; 10036 hci_emit_event(event, pos, 0); 10037 } 10038 10039 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10040 uint8_t event[6]; 10041 uint16_t pos = 0; 10042 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10043 event[pos++] = sizeof(event) - 2; 10044 event[pos++] = big->big_handle; 10045 event[pos++] = bis_index; 10046 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10047 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10048 } 10049 10050 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10051 uint8_t event[4]; 10052 uint16_t pos = 0; 10053 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10054 event[pos++] = sizeof(event) - 2; 10055 little_endian_store_16(event, pos, cis_con_handle); 10056 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10057 } 10058 10059 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 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 if ( big->big_handle == big_handle ) { 10065 return big; 10066 } 10067 } 10068 return NULL; 10069 } 10070 10071 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10072 btstack_linked_list_iterator_t it; 10073 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10074 while (btstack_linked_list_iterator_has_next(&it)){ 10075 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10076 if ( big_sync->big_handle == big_handle ) { 10077 return big_sync; 10078 } 10079 } 10080 return NULL; 10081 } 10082 10083 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10084 hci_stack->iso_packets_to_queue = num_packets; 10085 } 10086 10087 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10088 btstack_linked_list_iterator_t it; 10089 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10090 while (btstack_linked_list_iterator_has_next(&it)){ 10091 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10092 if ( cig->cig_id == cig_id ) { 10093 return cig; 10094 } 10095 } 10096 return NULL; 10097 } 10098 10099 static void hci_iso_notify_can_send_now(void){ 10100 10101 // BIG 10102 10103 btstack_linked_list_iterator_t it; 10104 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10105 while (btstack_linked_list_iterator_has_next(&it)){ 10106 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10107 // track number completed packet timestamps 10108 if (big->num_completed_timestamp_current_valid){ 10109 big->num_completed_timestamp_current_valid = false; 10110 if (big->num_completed_timestamp_previous_valid){ 10111 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10112 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10113 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10114 big->num_completed_timestamp_previous_ms); 10115 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10116 // to catch up, skip packet on all BIS 10117 uint8_t i; 10118 for (i=0;i<big->num_bis;i++){ 10119 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10120 if (iso_stream){ 10121 iso_stream->num_packets_to_skip++; 10122 } 10123 } 10124 } 10125 } 10126 big->num_completed_timestamp_previous_valid = true; 10127 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10128 } 10129 10130 if (big->can_send_now_requested){ 10131 // check if no outgoing iso packets pending and no can send now have to be emitted 10132 uint8_t i; 10133 bool can_send = true; 10134 uint8_t num_iso_queued_minimum = 0; 10135 for (i=0;i<big->num_bis;i++){ 10136 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10137 if (iso_stream == NULL) continue; 10138 // handle case where individual ISO packet was sent too late: 10139 // for each additionally queued packet, a new one needs to get skipped 10140 if (i==0){ 10141 num_iso_queued_minimum = iso_stream->num_packets_sent; 10142 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10143 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10144 iso_stream->num_packets_to_skip += num_packets_to_skip; 10145 iso_stream->num_packets_sent -= num_packets_to_skip; 10146 } 10147 // check if we can send now 10148 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10149 can_send = false; 10150 break; 10151 } 10152 } 10153 if (can_send){ 10154 // propagate can send now to individual streams 10155 big->can_send_now_requested = false; 10156 for (i=0;i<big->num_bis;i++){ 10157 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10158 iso_stream->emit_ready_to_send = true; 10159 } 10160 } 10161 } 10162 } 10163 10164 if (hci_stack->hci_packet_buffer_reserved) return; 10165 10166 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10167 while (btstack_linked_list_iterator_has_next(&it)){ 10168 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10169 // report bis ready 10170 uint8_t i; 10171 for (i=0;i<big->num_bis;i++){ 10172 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10173 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10174 iso_stream->emit_ready_to_send = false; 10175 hci_emit_bis_can_send_now(big, i); 10176 break; 10177 } 10178 } 10179 } 10180 10181 // CIS 10182 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10183 while (btstack_linked_list_iterator_has_next(&it)) { 10184 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10185 if ((iso_stream->can_send_now_requested) && 10186 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10187 iso_stream->can_send_now_requested = false; 10188 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10189 } 10190 } 10191 } 10192 10193 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10194 if (hci_big_for_handle(big_params->big_handle) != NULL){ 10195 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10196 } 10197 if (big_params->num_bis == 0){ 10198 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10199 } 10200 if (big_params->num_bis > MAX_NR_BIS){ 10201 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10202 } 10203 10204 // reserve ISO Streams 10205 uint8_t i; 10206 uint8_t status = ERROR_CODE_SUCCESS; 10207 for (i=0;i<big_params->num_bis;i++){ 10208 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 10209 if (iso_stream == NULL) { 10210 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10211 break; 10212 } 10213 } 10214 10215 // free structs on error 10216 if (status != ERROR_CODE_SUCCESS){ 10217 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 10218 return status; 10219 } 10220 10221 le_audio_big_t * big = storage; 10222 big->big_handle = big_params->big_handle; 10223 big->params = big_params; 10224 big->state = LE_AUDIO_BIG_STATE_CREATE; 10225 big->num_bis = big_params->num_bis; 10226 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10227 10228 hci_run(); 10229 10230 return ERROR_CODE_SUCCESS; 10231 } 10232 10233 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10234 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 10235 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10236 } 10237 if (big_sync_params->num_bis == 0){ 10238 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10239 } 10240 if (big_sync_params->num_bis > MAX_NR_BIS){ 10241 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10242 } 10243 10244 le_audio_big_sync_t * big_sync = storage; 10245 big_sync->big_handle = big_sync_params->big_handle; 10246 big_sync->params = big_sync_params; 10247 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10248 big_sync->num_bis = big_sync_params->num_bis; 10249 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10250 10251 hci_run(); 10252 10253 return ERROR_CODE_SUCCESS; 10254 } 10255 10256 uint8_t gap_big_terminate(uint8_t big_handle){ 10257 le_audio_big_t * big = hci_big_for_handle(big_handle); 10258 if (big == NULL){ 10259 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10260 } 10261 switch (big->state){ 10262 case LE_AUDIO_BIG_STATE_CREATE: 10263 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10264 hci_emit_big_terminated(big); 10265 break; 10266 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10267 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10268 break; 10269 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10270 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10271 case LE_AUDIO_BIG_STATE_ACTIVE: 10272 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10273 hci_run(); 10274 break; 10275 default: 10276 return ERROR_CODE_COMMAND_DISALLOWED; 10277 } 10278 return ERROR_CODE_SUCCESS; 10279 } 10280 10281 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10282 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10283 if (big_sync == NULL){ 10284 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10285 } 10286 switch (big_sync->state){ 10287 case LE_AUDIO_BIG_STATE_CREATE: 10288 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10289 hci_emit_big_sync_stopped(big_handle); 10290 break; 10291 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10292 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10293 break; 10294 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10295 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10296 case LE_AUDIO_BIG_STATE_ACTIVE: 10297 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10298 hci_run(); 10299 break; 10300 default: 10301 return ERROR_CODE_COMMAND_DISALLOWED; 10302 } 10303 return ERROR_CODE_SUCCESS; 10304 } 10305 10306 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10307 le_audio_big_t * big = hci_big_for_handle(big_handle); 10308 if (big == NULL){ 10309 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10310 } 10311 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10312 return ERROR_CODE_COMMAND_DISALLOWED; 10313 } 10314 big->can_send_now_requested = true; 10315 hci_iso_notify_can_send_now(); 10316 return ERROR_CODE_SUCCESS; 10317 } 10318 10319 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10320 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10321 if (iso_stream == NULL){ 10322 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10323 } 10324 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10325 return ERROR_CODE_COMMAND_DISALLOWED; 10326 } 10327 iso_stream->can_send_now_requested = true; 10328 hci_iso_notify_can_send_now(); 10329 return ERROR_CODE_SUCCESS; 10330 } 10331 10332 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10333 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10334 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10335 } 10336 if (cig_params->num_cis == 0){ 10337 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10338 } 10339 if (cig_params->num_cis > MAX_NR_BIS){ 10340 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10341 } 10342 10343 // reserve ISO Streams 10344 uint8_t i; 10345 uint8_t status = ERROR_CODE_SUCCESS; 10346 for (i=0;i<cig_params->num_cis;i++){ 10347 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10348 if (iso_stream == NULL) { 10349 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10350 break; 10351 } 10352 } 10353 10354 // free structs on error 10355 if (status != ERROR_CODE_SUCCESS){ 10356 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10357 return status; 10358 } 10359 10360 le_audio_cig_t * cig = storage; 10361 cig->cig_id = cig_params->cig_id; 10362 cig->num_cis = cig_params->num_cis; 10363 cig->params = cig_params; 10364 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10365 for (i=0;i<cig->num_cis;i++){ 10366 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10367 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10368 cig->cis_setup_active[i] = false; 10369 cig->cis_established[i] = false; 10370 } 10371 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10372 10373 hci_run(); 10374 10375 return ERROR_CODE_SUCCESS; 10376 } 10377 10378 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10379 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10380 if (cig == NULL){ 10381 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10382 } 10383 10384 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10385 return ERROR_CODE_COMMAND_DISALLOWED; 10386 } 10387 10388 // store ACL Connection Handles 10389 uint8_t i; 10390 for (i=0;i<cig->num_cis;i++){ 10391 // check that all con handles exist and store 10392 hci_con_handle_t cis_handle = cis_con_handles[i]; 10393 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10394 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10395 } 10396 uint8_t j; 10397 bool found = false; 10398 for (j=0;j<cig->num_cis;j++){ 10399 if (cig->cis_con_handles[j] == cis_handle){ 10400 cig->acl_con_handles[j] = acl_con_handles[j]; 10401 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10402 btstack_assert(iso_stream != NULL); 10403 iso_stream->acl_handle = acl_con_handles[j]; 10404 found = true; 10405 break; 10406 } 10407 } 10408 if (!found){ 10409 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10410 } 10411 } 10412 10413 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10414 hci_run(); 10415 10416 return ERROR_CODE_SUCCESS; 10417 } 10418 10419 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10420 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10421 if (iso_stream == NULL){ 10422 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10423 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10424 } 10425 10426 // set next state and continue 10427 iso_stream->state = state; 10428 hci_run(); 10429 return ERROR_CODE_SUCCESS; 10430 } 10431 10432 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10433 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10434 } 10435 10436 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10437 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10438 } 10439 10440 10441 #endif 10442 #endif /* ENABLE_BLE */ 10443 10444 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10445 void hci_setup_test_connections_fuzz(void){ 10446 hci_connection_t * conn; 10447 10448 // default address: 66:55:44:33:00:01 10449 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10450 10451 // setup Controller info 10452 hci_stack->num_cmd_packets = 255; 10453 hci_stack->acl_packets_total_num = 255; 10454 10455 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10456 addr[5] = 0x01; 10457 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10458 conn->con_handle = addr[5]; 10459 conn->state = RECEIVED_CONNECTION_REQUEST; 10460 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10461 10462 // setup incoming Classic SCO connection with con handle 0x0002 10463 addr[5] = 0x02; 10464 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10465 conn->con_handle = addr[5]; 10466 conn->state = RECEIVED_CONNECTION_REQUEST; 10467 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10468 10469 // setup ready Classic ACL connection with con handle 0x0003 10470 addr[5] = 0x03; 10471 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10472 conn->con_handle = addr[5]; 10473 conn->state = OPEN; 10474 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10475 10476 // setup ready Classic SCO connection with con handle 0x0004 10477 addr[5] = 0x04; 10478 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10479 conn->con_handle = addr[5]; 10480 conn->state = OPEN; 10481 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10482 10483 // setup ready LE ACL connection with con handle 0x005 and public address 10484 addr[5] = 0x05; 10485 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10486 conn->con_handle = addr[5]; 10487 conn->state = OPEN; 10488 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10489 conn->sm_connection.sm_connection_encrypted = 1; 10490 } 10491 10492 void hci_free_connections_fuzz(void){ 10493 btstack_linked_list_iterator_t it; 10494 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10495 while (btstack_linked_list_iterator_has_next(&it)){ 10496 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10497 btstack_linked_list_iterator_remove(&it); 10498 btstack_memory_hci_connection_free(con); 10499 } 10500 } 10501 void hci_simulate_working_fuzz(void){ 10502 hci_stack->le_scanning_param_update = false; 10503 hci_init_done(); 10504 hci_stack->num_cmd_packets = 255; 10505 } 10506 #endif 10507