1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static bool hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_le_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 247 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 248 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 249 static void hci_iso_notify_can_send_now(void); 250 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 251 static void hci_emit_big_terminated(const le_audio_big_t * big); 252 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 253 static void hci_emit_big_sync_stopped(uint8_t big_handle); 254 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 255 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 258 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 259 #endif /* ENABLE_BLE */ 260 261 // the STACK is here 262 #ifndef HAVE_MALLOC 263 static hci_stack_t hci_stack_static; 264 #endif 265 static hci_stack_t * hci_stack = NULL; 266 267 #ifdef ENABLE_CLASSIC 268 // default name 269 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 270 271 // test helper 272 static uint8_t disable_l2cap_timeouts = 0; 273 #endif 274 275 // reset connection state on create and on reconnect 276 // don't overwrite addr, con handle, role 277 static void hci_connection_init(hci_connection_t * conn){ 278 conn->authentication_flags = AUTH_FLAG_NONE; 279 conn->bonding_flags = 0; 280 conn->requested_security_level = LEVEL_0; 281 #ifdef ENABLE_CLASSIC 282 conn->request_role = HCI_ROLE_INVALID; 283 conn->sniff_subrating_max_latency = 0xffff; 284 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 285 conn->link_key_type = INVALID_LINK_KEY; 286 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 287 btstack_run_loop_set_timer_context(&conn->timeout, conn); 288 hci_connection_timestamp(conn); 289 #endif 290 conn->acl_recombination_length = 0; 291 conn->acl_recombination_pos = 0; 292 conn->num_packets_sent = 0; 293 294 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 295 #ifdef ENABLE_BLE 296 conn->le_phy_update_all_phys = 0xff; 297 #endif 298 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 299 conn->le_max_tx_octets = 27; 300 #endif 301 #ifdef ENABLE_CLASSIC_PAIRING_OOB 302 conn->classic_oob_c_192 = NULL; 303 conn->classic_oob_r_192 = NULL; 304 conn->classic_oob_c_256 = NULL; 305 conn->classic_oob_r_256 = NULL; 306 #endif 307 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 308 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 309 conn->le_past_advertising_handle = 0xff; 310 #endif 311 } 312 313 /** 314 * create connection for given address 315 * 316 * @return connection OR NULL, if no memory left 317 */ 318 static hci_connection_t * 319 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 320 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 321 322 hci_connection_t * conn = btstack_memory_hci_connection_get(); 323 if (!conn) return NULL; 324 hci_connection_init(conn); 325 326 bd_addr_copy(conn->address, addr); 327 conn->address_type = addr_type; 328 conn->con_handle = HCI_CON_HANDLE_INVALID; 329 conn->role = role; 330 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 331 332 return conn; 333 } 334 335 336 /** 337 * get le connection parameter range 338 * 339 * @return le connection parameter range struct 340 */ 341 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 342 *range = hci_stack->le_connection_parameter_range; 343 } 344 345 /** 346 * set le connection parameter range 347 * 348 */ 349 350 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 351 hci_stack->le_connection_parameter_range = *range; 352 } 353 354 /** 355 * @brief Test if connection parameters are inside in existing rage 356 * @param conn_interval_min (unit: 1.25ms) 357 * @param conn_interval_max (unit: 1.25ms) 358 * @param conn_latency 359 * @param supervision_timeout (unit: 10ms) 360 * @return 1 if included 361 */ 362 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 363 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 364 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 365 366 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 367 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 368 369 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 370 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 371 372 return 1; 373 } 374 375 /** 376 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 377 * @note: default: 1 378 * @param max_peripheral_connections 379 */ 380 #ifdef ENABLE_LE_PERIPHERAL 381 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 382 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 383 } 384 #endif 385 386 /** 387 * get hci connections iterator 388 * 389 * @return hci connections iterator 390 */ 391 392 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 393 btstack_linked_list_iterator_init(it, &hci_stack->connections); 394 } 395 396 /** 397 * get connection for a given handle 398 * 399 * @return connection OR NULL, if not found 400 */ 401 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 402 btstack_linked_list_iterator_t it; 403 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 404 while (btstack_linked_list_iterator_has_next(&it)){ 405 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 406 if ( item->con_handle == con_handle ) { 407 return item; 408 } 409 } 410 return NULL; 411 } 412 413 /** 414 * get connection for given address 415 * 416 * @return connection OR NULL, if not found 417 */ 418 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 419 btstack_linked_list_iterator_t it; 420 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 421 while (btstack_linked_list_iterator_has_next(&it)){ 422 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 423 if (connection->address_type != addr_type) continue; 424 if (memcmp(addr, connection->address, 6) != 0) continue; 425 return connection; 426 } 427 return NULL; 428 } 429 430 #ifdef ENABLE_CLASSIC 431 432 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 433 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 434 } 435 436 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 437 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 438 } 439 440 #ifdef ENABLE_SCO_OVER_HCI 441 static int hci_number_sco_connections(void){ 442 int connections = 0; 443 btstack_linked_list_iterator_t it; 444 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 445 while (btstack_linked_list_iterator_has_next(&it)){ 446 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 447 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 448 connections++; 449 } 450 return connections; 451 } 452 #endif 453 454 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 455 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 456 #ifdef HAVE_EMBEDDED_TICK 457 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 458 // connections might be timed out 459 hci_emit_l2cap_check_timeout(connection); 460 } 461 #else 462 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 463 // connections might be timed out 464 hci_emit_l2cap_check_timeout(connection); 465 } 466 #endif 467 } 468 469 static void hci_connection_timestamp(hci_connection_t *connection){ 470 #ifdef HAVE_EMBEDDED_TICK 471 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 472 #else 473 connection->timestamp = btstack_run_loop_get_time_ms(); 474 #endif 475 } 476 477 /** 478 * add authentication flags and reset timer 479 * @note: assumes classic connection 480 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 481 */ 482 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 483 bd_addr_t addr; 484 reverse_bd_addr(bd_addr, addr); 485 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 486 if (conn) { 487 connectionSetAuthenticationFlags(conn, flags); 488 hci_connection_timestamp(conn); 489 } 490 } 491 492 static bool hci_pairing_active(hci_connection_t * hci_connection){ 493 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 494 } 495 496 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 497 if (hci_pairing_active(hci_connection)) return; 498 if (ssp){ 499 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 500 } else { 501 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 502 } 503 // if we are initiator, we have sent an HCI Authenticate Request 504 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 505 506 // if we are responder, use minimal service security level as required level 507 if (!initiator){ 508 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 509 } 510 511 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 512 513 uint8_t event[12]; 514 event[0] = GAP_EVENT_PAIRING_STARTED; 515 event[1] = 10; 516 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 517 reverse_bd_addr(hci_connection->address, &event[4]); 518 event[10] = (uint8_t) ssp; 519 event[11] = (uint8_t) initiator; 520 hci_emit_event(event, sizeof(event), 1); 521 } 522 523 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 524 hci_connection->requested_security_level = LEVEL_0; 525 if (!hci_pairing_active(hci_connection)) return; 526 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 527 #ifdef ENABLE_CLASSIC_PAIRING_OOB 528 hci_connection->classic_oob_c_192 = NULL; 529 hci_connection->classic_oob_r_192 = NULL; 530 hci_connection->classic_oob_c_256 = NULL; 531 hci_connection->classic_oob_r_256 = NULL; 532 #endif 533 log_info("pairing complete, status %02x", status); 534 535 uint8_t event[11]; 536 event[0] = GAP_EVENT_PAIRING_COMPLETE; 537 event[1] = 9; 538 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 539 reverse_bd_addr(hci_connection->address, &event[4]); 540 event[10] = status; 541 hci_emit_event(event, sizeof(event), 1); 542 543 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 544 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 545 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 546 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 547 hci_connection->bonding_status = status; 548 } 549 } 550 551 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 552 hci_connection_t * conn = hci_connection_for_handle(handle); 553 if (!conn) return false; 554 return hci_pairing_active(conn); 555 } 556 557 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 558 if (!hci_stack->link_key_db) return; 559 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 560 hci_stack->link_key_db->delete_link_key(addr); 561 } 562 563 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 564 if (!hci_stack->link_key_db) return; 565 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 566 hci_stack->link_key_db->put_link_key(addr, link_key, type); 567 } 568 569 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 570 if (!hci_stack->link_key_db) return false; 571 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 572 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 573 return result; 574 } 575 576 void gap_delete_all_link_keys(void){ 577 bd_addr_t addr; 578 link_key_t link_key; 579 link_key_type_t type; 580 btstack_link_key_iterator_t it; 581 int ok = gap_link_key_iterator_init(&it); 582 if (!ok) { 583 log_error("could not initialize iterator"); 584 return; 585 } 586 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 587 gap_drop_link_key_for_bd_addr(addr); 588 } 589 gap_link_key_iterator_done(&it); 590 } 591 592 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 593 if (!hci_stack->link_key_db) return 0; 594 if (!hci_stack->link_key_db->iterator_init) return 0; 595 return hci_stack->link_key_db->iterator_init(it); 596 } 597 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 598 if (!hci_stack->link_key_db) return 0; 599 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 600 } 601 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 602 if (!hci_stack->link_key_db) return; 603 hci_stack->link_key_db->iterator_done(it); 604 } 605 #endif 606 607 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 608 switch (address_type){ 609 case BD_ADDR_TYPE_LE_PUBLIC: 610 case BD_ADDR_TYPE_LE_RANDOM: 611 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 612 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 613 return true; 614 default: 615 return false; 616 } 617 } 618 619 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 620 switch (address_type){ 621 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 622 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 623 return true; 624 default: 625 return false; 626 } 627 } 628 629 static bool hci_is_le_connection(hci_connection_t * connection){ 630 return hci_is_le_connection_type(connection->address_type); 631 } 632 633 /** 634 * count connections 635 */ 636 static int nr_hci_connections(void){ 637 int count = 0; 638 btstack_linked_item_t *it; 639 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 640 count++; 641 } 642 return count; 643 } 644 645 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 646 647 unsigned int num_packets_sent_classic = 0; 648 unsigned int num_packets_sent_le = 0; 649 650 btstack_linked_item_t *it; 651 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 652 hci_connection_t * connection = (hci_connection_t *) it; 653 if (hci_is_le_connection(connection)){ 654 num_packets_sent_le += connection->num_packets_sent; 655 } 656 if (connection->address_type == BD_ADDR_TYPE_ACL){ 657 num_packets_sent_classic += connection->num_packets_sent; 658 } 659 } 660 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 661 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 662 int free_slots_le = 0; 663 664 if (free_slots_classic < 0){ 665 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 666 return 0; 667 } 668 669 if (hci_stack->le_acl_packets_total_num){ 670 // if we have LE slots, they are used 671 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 672 if (free_slots_le < 0){ 673 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 674 return 0; 675 } 676 } else { 677 // otherwise, classic slots are used for LE, too 678 free_slots_classic -= num_packets_sent_le; 679 if (free_slots_classic < 0){ 680 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 681 return 0; 682 } 683 } 684 685 switch (address_type){ 686 case BD_ADDR_TYPE_UNKNOWN: 687 log_error("hci_number_free_acl_slots: unknown address type"); 688 return 0; 689 690 case BD_ADDR_TYPE_ACL: 691 return (uint16_t) free_slots_classic; 692 693 default: 694 if (hci_stack->le_acl_packets_total_num > 0){ 695 return (uint16_t) free_slots_le; 696 } 697 return (uint16_t) free_slots_classic; 698 } 699 } 700 701 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 702 // get connection type 703 hci_connection_t * connection = hci_connection_for_handle(con_handle); 704 if (!connection){ 705 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 706 return 0; 707 } 708 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 709 } 710 711 #ifdef ENABLE_CLASSIC 712 static int hci_number_free_sco_slots(void){ 713 unsigned int num_sco_packets_sent = 0; 714 btstack_linked_item_t *it; 715 if (hci_stack->synchronous_flow_control_enabled){ 716 // explicit flow control 717 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 718 hci_connection_t * connection = (hci_connection_t *) it; 719 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 720 num_sco_packets_sent += connection->num_packets_sent; 721 } 722 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 723 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 724 return 0; 725 } 726 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 727 } else { 728 // implicit flow control 729 int num_ready = 0; 730 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 731 hci_connection_t * connection = (hci_connection_t *) it; 732 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 733 if (connection->sco_tx_ready == 0) continue; 734 num_ready++; 735 } 736 return num_ready; 737 } 738 } 739 #endif 740 741 // only used to send HCI Host Number Completed Packets 742 static int hci_can_send_comand_packet_transport(void){ 743 if (hci_stack->hci_packet_buffer_reserved) return 0; 744 745 // check for async hci transport implementations 746 if (hci_stack->hci_transport->can_send_packet_now){ 747 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 748 return 0; 749 } 750 } 751 return 1; 752 } 753 754 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 755 bool hci_can_send_command_packet_now(void){ 756 if (hci_can_send_comand_packet_transport() == 0) return false; 757 return hci_stack->num_cmd_packets > 0u; 758 } 759 760 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 761 // check for async hci transport implementations 762 if (!hci_stack->hci_transport->can_send_packet_now) return true; 763 return hci_stack->hci_transport->can_send_packet_now(packet_type); 764 } 765 766 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 767 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 768 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 769 } 770 771 bool hci_can_send_acl_le_packet_now(void){ 772 if (hci_stack->hci_packet_buffer_reserved) return false; 773 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 774 } 775 776 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 777 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 778 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 779 } 780 781 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 782 if (hci_stack->hci_packet_buffer_reserved) return false; 783 return hci_can_send_prepared_acl_packet_now(con_handle); 784 } 785 786 #ifdef ENABLE_CLASSIC 787 bool hci_can_send_acl_classic_packet_now(void){ 788 if (hci_stack->hci_packet_buffer_reserved) return false; 789 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 790 } 791 792 bool hci_can_send_prepared_sco_packet_now(void){ 793 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 794 if (hci_have_usb_transport()){ 795 return hci_stack->sco_can_send_now; 796 } else { 797 return hci_number_free_sco_slots() > 0; 798 } 799 } 800 801 bool hci_can_send_sco_packet_now(void){ 802 if (hci_stack->hci_packet_buffer_reserved) return false; 803 return hci_can_send_prepared_sco_packet_now(); 804 } 805 806 void hci_request_sco_can_send_now_event(void){ 807 hci_stack->sco_waiting_for_can_send_now = 1; 808 hci_notify_if_sco_can_send_now(); 809 } 810 #endif 811 812 // used for internal checks in l2cap.c 813 bool hci_is_packet_buffer_reserved(void){ 814 return hci_stack->hci_packet_buffer_reserved; 815 } 816 817 // reserves outgoing packet buffer. 818 // @return 1 if successful 819 bool hci_reserve_packet_buffer(void){ 820 if (hci_stack->hci_packet_buffer_reserved) { 821 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 822 return false; 823 } 824 hci_stack->hci_packet_buffer_reserved = true; 825 return true; 826 } 827 828 void hci_release_packet_buffer(void){ 829 hci_stack->hci_packet_buffer_reserved = false; 830 } 831 832 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 833 static int hci_transport_synchronous(void){ 834 return hci_stack->hci_transport->can_send_packet_now == NULL; 835 } 836 837 // used for debugging 838 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 839 static void hci_controller_dump_packets(void){ 840 // format: "{handle:04x}:{count:02d} " 841 char summaries[3][7 * 8 + 1]; 842 uint16_t totals[3]; 843 uint8_t index; 844 for (index = 0 ; index < 3 ; index++){ 845 summaries[index][0] = 0; 846 totals[index] = 0; 847 } 848 btstack_linked_item_t *it; 849 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 850 hci_connection_t * connection = (hci_connection_t *) it; 851 switch (connection->address_type){ 852 case BD_ADDR_TYPE_ACL: 853 index = 0; 854 break; 855 case BD_ADDR_TYPE_SCO: 856 index = 2; 857 break; 858 default: 859 index = 1; 860 break; 861 } 862 totals[index] += connection->num_packets_sent; 863 char item_text[10]; 864 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 865 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 866 } 867 for (index = 0 ; index < 3 ; index++){ 868 if (summaries[index][0] == 0){ 869 summaries[index][0] = '-'; 870 summaries[index][1] = 0; 871 } 872 } 873 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 874 } 875 #endif 876 877 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 878 879 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 880 881 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 882 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 883 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 884 max_acl_data_packet_length = hci_stack->le_data_packets_length; 885 } 886 887 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 888 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 889 max_acl_data_packet_length = connection->le_max_tx_octets; 890 } 891 #endif 892 893 log_debug("hci_send_acl_packet_fragments entered"); 894 895 uint8_t status = ERROR_CODE_SUCCESS; 896 // multiple packets could be send on a synchronous HCI transport 897 while (true){ 898 899 log_debug("hci_send_acl_packet_fragments loop entered"); 900 901 // get current data 902 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 903 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 904 bool more_fragments = false; 905 906 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 907 if (current_acl_data_packet_length > max_acl_data_packet_length){ 908 more_fragments = true; 909 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 910 } 911 912 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 913 if (acl_header_pos > 0u){ 914 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 915 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 916 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 917 } 918 919 // update header len 920 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 921 922 // count packet 923 connection->num_packets_sent++; 924 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 925 926 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 927 if (more_fragments){ 928 // update start of next fragment to send 929 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 930 } else { 931 // done 932 hci_stack->acl_fragmentation_pos = 0; 933 hci_stack->acl_fragmentation_total_size = 0; 934 } 935 936 // send packet 937 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 938 const int size = current_acl_data_packet_length + 4; 939 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 940 hci_stack->acl_fragmentation_tx_active = 1; 941 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 942 if (err != 0){ 943 // no error from HCI Transport expected 944 status = ERROR_CODE_HARDWARE_FAILURE; 945 } 946 947 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 948 hci_controller_dump_packets(); 949 #endif 950 951 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 952 953 // done yet? 954 if (!more_fragments) break; 955 956 // can send more? 957 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 958 } 959 960 log_debug("hci_send_acl_packet_fragments loop over"); 961 962 // release buffer now for synchronous transport 963 if (hci_transport_synchronous()){ 964 hci_stack->acl_fragmentation_tx_active = 0; 965 hci_release_packet_buffer(); 966 hci_emit_transport_packet_sent(); 967 } 968 969 return status; 970 } 971 972 // pre: caller has reserved the packet buffer 973 uint8_t hci_send_acl_packet_buffer(int size){ 974 btstack_assert(hci_stack->hci_packet_buffer_reserved); 975 976 uint8_t * packet = hci_stack->hci_packet_buffer; 977 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 978 979 hci_connection_t *connection = hci_connection_for_handle( con_handle); 980 if (!connection) { 981 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 982 hci_release_packet_buffer(); 983 hci_emit_transport_packet_sent(); 984 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 985 } 986 987 // check for free places on Bluetooth module 988 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 989 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 990 hci_release_packet_buffer(); 991 hci_emit_transport_packet_sent(); 992 return BTSTACK_ACL_BUFFERS_FULL; 993 } 994 995 #ifdef ENABLE_CLASSIC 996 hci_connection_timestamp(connection); 997 #endif 998 999 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 1000 1001 // setup data 1002 hci_stack->acl_fragmentation_total_size = size; 1003 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1004 1005 return hci_send_acl_packet_fragments(connection); 1006 } 1007 1008 #ifdef ENABLE_CLASSIC 1009 // pre: caller has reserved the packet buffer 1010 uint8_t hci_send_sco_packet_buffer(int size){ 1011 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1012 1013 uint8_t * packet = hci_stack->hci_packet_buffer; 1014 1015 // skip checks in loopback mode 1016 if (!hci_stack->loopback_mode){ 1017 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1018 1019 // check for free places on Bluetooth module 1020 if (!hci_can_send_prepared_sco_packet_now()) { 1021 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1022 hci_release_packet_buffer(); 1023 hci_emit_transport_packet_sent(); 1024 return BTSTACK_ACL_BUFFERS_FULL; 1025 } 1026 1027 // track send packet in connection struct 1028 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1029 if (!connection) { 1030 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1031 hci_release_packet_buffer(); 1032 hci_emit_transport_packet_sent(); 1033 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1034 } 1035 1036 if (hci_have_usb_transport()){ 1037 // token used 1038 hci_stack->sco_can_send_now = false; 1039 } else { 1040 if (hci_stack->synchronous_flow_control_enabled){ 1041 connection->num_packets_sent++; 1042 } else { 1043 connection->sco_tx_ready--; 1044 } 1045 } 1046 } 1047 1048 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1049 1050 #ifdef HAVE_SCO_TRANSPORT 1051 hci_stack->sco_transport->send_packet(packet, size); 1052 hci_release_packet_buffer(); 1053 hci_emit_transport_packet_sent(); 1054 1055 return 0; 1056 #else 1057 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1058 if (hci_transport_synchronous()){ 1059 hci_release_packet_buffer(); 1060 hci_emit_transport_packet_sent(); 1061 } 1062 1063 if (err != 0){ 1064 return ERROR_CODE_HARDWARE_FAILURE; 1065 } 1066 return ERROR_CODE_SUCCESS; 1067 #endif 1068 } 1069 #endif 1070 1071 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1072 static uint8_t hci_send_iso_packet_fragments(void){ 1073 1074 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1075 uint8_t status = ERROR_CODE_SUCCESS; 1076 // multiple packets could be send on a synchronous HCI transport 1077 while (true){ 1078 1079 // get current data 1080 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1081 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1082 bool more_fragments = false; 1083 1084 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1085 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1086 more_fragments = true; 1087 current_iso_data_packet_length = max_iso_data_packet_length; 1088 } 1089 1090 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1091 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1092 uint8_t pb_flags; 1093 if (iso_header_pos == 0u){ 1094 // first fragment, keep TS field 1095 pb_flags = more_fragments ? 0x00 : 0x02; 1096 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1097 } else { 1098 // later fragment, drop TS field 1099 pb_flags = more_fragments ? 0x01 : 0x03; 1100 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1101 } 1102 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1103 1104 // update header len 1105 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1106 1107 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1108 if (more_fragments){ 1109 // update start of next fragment to send 1110 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1111 } else { 1112 // done 1113 hci_stack->iso_fragmentation_pos = 0; 1114 hci_stack->iso_fragmentation_total_size = 0; 1115 } 1116 1117 // send packet 1118 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1119 const int size = current_iso_data_packet_length + 4; 1120 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1121 hci_stack->iso_fragmentation_tx_active = true; 1122 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1123 if (err != 0){ 1124 // no error from HCI Transport expected 1125 status = ERROR_CODE_HARDWARE_FAILURE; 1126 } 1127 1128 // done yet? 1129 if (!more_fragments) break; 1130 1131 // can send more? 1132 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1133 } 1134 1135 // release buffer now for synchronous transport 1136 if (hci_transport_synchronous()){ 1137 hci_stack->iso_fragmentation_tx_active = false; 1138 hci_release_packet_buffer(); 1139 hci_emit_transport_packet_sent(); 1140 } 1141 1142 return status; 1143 } 1144 1145 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1146 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1147 1148 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1149 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1150 if (iso_stream == NULL){ 1151 hci_release_packet_buffer(); 1152 hci_iso_notify_can_send_now(); 1153 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1154 } 1155 1156 // TODO: check for space on controller 1157 1158 // skip iso packets if needed 1159 if (iso_stream->num_packets_to_skip > 0){ 1160 iso_stream->num_packets_to_skip--; 1161 // pretend it was processed and trigger next one 1162 hci_release_packet_buffer(); 1163 hci_iso_notify_can_send_now(); 1164 return ERROR_CODE_SUCCESS; 1165 } 1166 1167 // track outgoing packet sent 1168 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1169 iso_stream->num_packets_sent++; 1170 1171 // setup data 1172 hci_stack->iso_fragmentation_total_size = size; 1173 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1174 1175 return hci_send_iso_packet_fragments(); 1176 } 1177 #endif 1178 1179 static void acl_handler(uint8_t *packet, uint16_t size){ 1180 1181 // get info 1182 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1183 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1184 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1185 uint16_t acl_length = READ_ACL_LENGTH(packet); 1186 1187 // ignore non-registered handle 1188 if (!conn){ 1189 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1190 return; 1191 } 1192 1193 // assert packet is complete 1194 if ((acl_length + 4u) != size){ 1195 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1196 return; 1197 } 1198 1199 #ifdef ENABLE_CLASSIC 1200 // update idle timestamp 1201 hci_connection_timestamp(conn); 1202 #endif 1203 1204 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1205 hci_stack->host_completed_packets = 1; 1206 conn->num_packets_completed++; 1207 #endif 1208 1209 // handle different packet types 1210 switch (acl_flags & 0x03u) { 1211 1212 case 0x01: // continuation fragment 1213 1214 // sanity checks 1215 if (conn->acl_recombination_pos == 0u) { 1216 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1217 return; 1218 } 1219 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1220 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1221 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1222 conn->acl_recombination_pos = 0; 1223 return; 1224 } 1225 1226 // append fragment payload (header already stored) 1227 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1228 &packet[4], acl_length); 1229 conn->acl_recombination_pos += acl_length; 1230 1231 // forward complete L2CAP packet if complete. 1232 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1233 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1234 // reset recombination buffer 1235 conn->acl_recombination_length = 0; 1236 conn->acl_recombination_pos = 0; 1237 } 1238 break; 1239 1240 case 0x02: { // first fragment 1241 1242 // sanity check 1243 if (conn->acl_recombination_pos) { 1244 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1245 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1246 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1247 } 1248 conn->acl_recombination_pos = 0; 1249 } 1250 1251 // peek into L2CAP packet! 1252 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1253 1254 // compare fragment size to L2CAP packet size 1255 if (acl_length >= (l2cap_length + 4u)){ 1256 // forward fragment as L2CAP packet 1257 hci_emit_acl_packet(packet, acl_length + 4u); 1258 } else { 1259 1260 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1261 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1262 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1263 return; 1264 } 1265 1266 // store first fragment and tweak acl length for complete package 1267 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1268 packet, acl_length + 4u); 1269 conn->acl_recombination_pos = acl_length + 4u; 1270 conn->acl_recombination_length = l2cap_length; 1271 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1272 } 1273 break; 1274 1275 } 1276 default: 1277 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1278 return; 1279 } 1280 1281 // execute main loop 1282 hci_run(); 1283 } 1284 1285 static void hci_connection_stop_timer(hci_connection_t * conn){ 1286 btstack_run_loop_remove_timer(&conn->timeout); 1287 #ifdef ENABLE_CLASSIC 1288 btstack_run_loop_remove_timer(&conn->timeout_sco); 1289 #endif 1290 } 1291 1292 static void hci_shutdown_connection(hci_connection_t *conn){ 1293 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1294 1295 #ifdef ENABLE_CLASSIC 1296 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1297 bd_addr_type_t addr_type = conn->address_type; 1298 #endif 1299 #ifdef HAVE_SCO_TRANSPORT 1300 hci_con_handle_t con_handle = conn->con_handle; 1301 #endif 1302 #endif 1303 1304 hci_connection_stop_timer(conn); 1305 1306 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1307 btstack_memory_hci_connection_free( conn ); 1308 1309 // now it's gone 1310 hci_emit_nr_connections_changed(); 1311 1312 #ifdef ENABLE_CLASSIC 1313 #ifdef ENABLE_SCO_OVER_HCI 1314 // update SCO 1315 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1316 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1317 } 1318 #endif 1319 #ifdef HAVE_SCO_TRANSPORT 1320 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1321 hci_stack->sco_transport->close(con_handle); 1322 } 1323 #endif 1324 #endif 1325 } 1326 1327 #ifdef ENABLE_CLASSIC 1328 1329 static const uint16_t hci_acl_packet_type_sizes[] = { 1330 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1331 HCI_ACL_DH1_SIZE, 0, 0, 0, 1332 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1333 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1334 }; 1335 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1336 0, // 3 slot packets 1337 1, // 5 slot packets 1338 25, // EDR 2 mpbs 1339 26, // EDR 3 mbps 1340 39, // 3 slot EDR packts 1341 40, // 5 slot EDR packet 1342 }; 1343 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1344 0x0f00, // 3 slot packets 1345 0xf000, // 5 slot packets 1346 0x1102, // EDR 2 mpbs 1347 0x2204, // EDR 3 mbps 1348 0x0300, // 3 slot EDR packts 1349 0x3000, // 5 slot EDR packet 1350 }; 1351 1352 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1353 // enable packet types based on size 1354 uint16_t packet_types = 0; 1355 unsigned int i; 1356 for (i=0;i<16;i++){ 1357 if (hci_acl_packet_type_sizes[i] == 0) continue; 1358 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1359 packet_types |= 1 << i; 1360 } 1361 } 1362 // disable packet types due to missing local supported features 1363 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1364 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1365 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1366 if (feature_set) continue; 1367 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1368 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1369 } 1370 return packet_types; 1371 } 1372 1373 uint16_t hci_usable_acl_packet_types(void){ 1374 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1375 // flip bits for "may not be used" 1376 return active_packet_types ^ 0x3306; 1377 } 1378 1379 void hci_enable_acl_packet_types(uint16_t packet_types){ 1380 hci_stack->enabled_packet_types_acl = packet_types; 1381 } 1382 1383 static const struct { 1384 uint8_t feature_index; 1385 uint16_t feature_packet_mask; 1386 } hci_sco_packet_type_feature_requirements[] = { 1387 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1388 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1389 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1390 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1391 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1392 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1393 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1394 }; 1395 1396 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1397 static const struct { 1398 uint16_t type; 1399 uint16_t payload_length; 1400 } hci_sco_packet_type_to_payload_length[] = { 1401 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1402 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1403 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1404 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1405 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1406 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1407 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1408 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1409 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1410 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1411 }; 1412 1413 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1414 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1415 unsigned int i; 1416 // disable packet types due to missing local supported features 1417 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1418 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1419 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1420 if (feature_set) continue; 1421 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1422 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1423 } 1424 return packet_types; 1425 } 1426 1427 uint16_t hci_usable_sco_packet_types(void){ 1428 return hci_stack->usable_packet_types_sco; 1429 } 1430 1431 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1432 uint8_t i; 1433 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1434 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1435 return hci_sco_packet_type_to_payload_length[i].payload_length; 1436 } 1437 } 1438 return 0; 1439 } 1440 1441 #endif 1442 1443 uint8_t* hci_get_outgoing_packet_buffer(void){ 1444 // hci packet buffer is >= acl data packet length 1445 return hci_stack->hci_packet_buffer; 1446 } 1447 1448 uint16_t hci_max_acl_data_packet_length(void){ 1449 return hci_stack->acl_data_packet_length; 1450 } 1451 1452 #ifdef ENABLE_CLASSIC 1453 bool hci_extended_sco_link_supported(void){ 1454 // No. 31, byte 3, bit 7 1455 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1456 } 1457 #endif 1458 1459 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1460 // No. 54, byte 6, bit 6 1461 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1462 } 1463 1464 #ifdef ENABLE_CLASSIC 1465 static bool gap_ssp_supported(void){ 1466 // No. 51, byte 6, bit 3 1467 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1468 } 1469 #endif 1470 1471 bool hci_classic_supported(void){ 1472 #ifdef ENABLE_CLASSIC 1473 // No. 37, byte 4, bit 5, = No BR/EDR Support 1474 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1475 #else 1476 return false; 1477 #endif 1478 } 1479 1480 bool hci_le_supported(void){ 1481 #ifdef ENABLE_BLE 1482 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1483 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1484 #else 1485 return false; 1486 #endif 1487 } 1488 1489 static bool hci_command_supported(uint8_t command_index){ 1490 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1491 } 1492 1493 #ifdef ENABLE_BLE 1494 1495 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1496 static bool hci_extended_advertising_supported(void){ 1497 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1498 } 1499 #endif 1500 1501 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1502 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1503 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1504 } else { 1505 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1506 } 1507 } 1508 1509 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1510 *addr_type = hci_stack->le_own_addr_type; 1511 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1512 } 1513 1514 #ifdef ENABLE_LE_PERIPHERAL 1515 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1516 *addr_type = hci_stack->le_advertisements_own_addr_type; 1517 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1518 }; 1519 #endif 1520 1521 #ifdef ENABLE_LE_CENTRAL 1522 1523 /** 1524 * @brief Get own addr type and address used for LE connections (Central) 1525 */ 1526 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1527 *addr_type = hci_stack->le_connection_own_addr_type; 1528 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1529 } 1530 1531 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1532 1533 uint16_t offset = 3; 1534 uint8_t num_reports = packet[offset]; 1535 offset += 1; 1536 1537 uint16_t i; 1538 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1539 for (i=0; (i<num_reports) && (offset < size);i++){ 1540 // sanity checks on data_length: 1541 uint8_t data_length = packet[offset + 8]; 1542 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1543 if ((offset + 9u + data_length + 1u) > size) return; 1544 // setup event 1545 uint8_t event_size = 10u + data_length; 1546 uint16_t pos = 0; 1547 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1548 event[pos++] = event_size; 1549 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1550 offset += 8; 1551 pos += 8; 1552 event[pos++] = packet[offset + 1 + data_length]; // rssi 1553 event[pos++] = data_length; 1554 offset++; 1555 (void)memcpy(&event[pos], &packet[offset], data_length); 1556 pos += data_length; 1557 offset += data_length + 1u; // rssi 1558 hci_emit_event(event, pos, 1); 1559 } 1560 } 1561 1562 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1563 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1564 uint16_t offset = 3; 1565 uint8_t num_reports = packet[offset++]; 1566 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1567 uint8_t i; 1568 for (i=0; (i<num_reports) && (offset < size);i++){ 1569 // sanity checks on data_length: 1570 uint16_t data_length = packet[offset + 23]; 1571 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1572 if ((offset + 24u + data_length) > size) return; 1573 uint16_t event_type = little_endian_read_16(packet, offset); 1574 offset += 2; 1575 if ((event_type & 0x10) != 0) { 1576 // setup legacy event 1577 uint8_t legacy_event_type; 1578 switch (event_type){ 1579 case 0b0010011: 1580 // ADV_IND 1581 legacy_event_type = 0; 1582 break; 1583 case 0b0010101: 1584 // ADV_DIRECT_IND 1585 legacy_event_type = 1; 1586 break; 1587 case 0b0010010: 1588 // ADV_SCAN_IND 1589 legacy_event_type = 2; 1590 break; 1591 case 0b0010000: 1592 // ADV_NONCONN_IND 1593 legacy_event_type = 3; 1594 break; 1595 case 0b0011011: 1596 case 0b0011010: 1597 // SCAN_RSP 1598 legacy_event_type = 4; 1599 break; 1600 default: 1601 legacy_event_type = 0; 1602 break; 1603 } 1604 uint16_t pos = 0; 1605 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1606 event[pos++] = 10u + data_length; 1607 event[pos++] = legacy_event_type; 1608 // copy address type + address 1609 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1610 offset += 7; 1611 pos += 7; 1612 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1613 offset += 4; 1614 // copy rssi 1615 event[pos++] = packet[offset++]; 1616 // skip periodic advertising interval and direct address 1617 offset += 9; 1618 // copy data len + data; 1619 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1620 pos += 1 +data_length; 1621 offset += 1+ data_length; 1622 hci_emit_event(event, pos, 1); 1623 } else { 1624 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1625 uint8_t report_len = 24 + data_length; 1626 event[1] = report_len; 1627 little_endian_store_16(event, 2, event_type); 1628 memcpy(&event[4], &packet[offset], report_len); 1629 offset += report_len; 1630 hci_emit_event(event, 2 + report_len, 1); 1631 } 1632 } 1633 } 1634 #endif 1635 1636 #endif 1637 #endif 1638 1639 #ifdef ENABLE_BLE 1640 #ifdef ENABLE_LE_PERIPHERAL 1641 static void hci_update_advertisements_enabled_for_current_roles(void){ 1642 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1643 // get number of active le slave connections 1644 int num_slave_connections = 0; 1645 btstack_linked_list_iterator_t it; 1646 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1647 while (btstack_linked_list_iterator_has_next(&it)){ 1648 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1649 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1650 if (con->state != OPEN) continue; 1651 if (con->role != HCI_ROLE_SLAVE) continue; 1652 if (!hci_is_le_connection(con)) continue; 1653 num_slave_connections++; 1654 } 1655 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1656 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1657 } else { 1658 hci_stack->le_advertisements_enabled_for_current_roles = false; 1659 } 1660 } 1661 #endif 1662 #endif 1663 1664 #ifdef ENABLE_CLASSIC 1665 static void gap_run_set_local_name(void){ 1666 hci_reserve_packet_buffer(); 1667 uint8_t * packet = hci_stack->hci_packet_buffer; 1668 // construct HCI Command and send 1669 uint16_t opcode = hci_write_local_name.opcode; 1670 hci_stack->last_cmd_opcode = opcode; 1671 packet[0] = opcode & 0xff; 1672 packet[1] = opcode >> 8; 1673 packet[2] = DEVICE_NAME_LEN; 1674 memset(&packet[3], 0, DEVICE_NAME_LEN); 1675 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1676 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1677 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1678 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1679 // expand '00:00:00:00:00:00' in name with bd_addr 1680 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1681 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1682 } 1683 1684 static void gap_run_set_eir_data(void){ 1685 hci_reserve_packet_buffer(); 1686 uint8_t * packet = hci_stack->hci_packet_buffer; 1687 // construct HCI Command in-place and send 1688 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1689 hci_stack->last_cmd_opcode = opcode; 1690 uint16_t offset = 0; 1691 packet[offset++] = opcode & 0xff; 1692 packet[offset++] = opcode >> 8; 1693 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1694 packet[offset++] = 0; // FEC not required 1695 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1696 if (hci_stack->eir_data){ 1697 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1698 ad_context_t context; 1699 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1700 uint8_t data_type = ad_iterator_get_data_type(&context); 1701 uint8_t size = ad_iterator_get_data_len(&context); 1702 const uint8_t *data = ad_iterator_get_data(&context); 1703 // copy item 1704 packet[offset++] = size + 1; 1705 packet[offset++] = data_type; 1706 memcpy(&packet[offset], data, size); 1707 // update name item 1708 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1709 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1710 } 1711 offset += size; 1712 } 1713 } else { 1714 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1715 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1716 packet[offset++] = bytes_to_copy + 1; 1717 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1718 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1719 // expand '00:00:00:00:00:00' in name with bd_addr 1720 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1721 } 1722 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1723 } 1724 1725 static void hci_run_gap_tasks_classic(void){ 1726 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1727 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1728 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1729 return; 1730 } 1731 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1732 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1733 gap_run_set_local_name(); 1734 return; 1735 } 1736 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1737 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1738 gap_run_set_eir_data(); 1739 return; 1740 } 1741 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1742 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1743 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1744 return; 1745 } 1746 // write page scan activity 1747 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1748 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1749 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1750 return; 1751 } 1752 // write page scan type 1753 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1754 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1755 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1756 return; 1757 } 1758 // write page timeout 1759 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1760 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1761 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1762 return; 1763 } 1764 // send scan enable 1765 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1766 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1767 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1768 return; 1769 } 1770 // send write scan activity 1771 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1772 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1773 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1774 return; 1775 } 1776 // send write inquiry transmit power level 1777 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1778 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1779 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1780 return; 1781 } 1782 } 1783 #endif 1784 1785 #ifndef HAVE_HOST_CONTROLLER_API 1786 1787 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1788 if (!hci_stack->config) return 0; 1789 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1790 // Limit baud rate for Broadcom chipsets to 3 mbps 1791 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1792 baud_rate = 3000000; 1793 } 1794 return baud_rate; 1795 } 1796 1797 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1798 UNUSED(ds); 1799 1800 switch (hci_stack->substate){ 1801 case HCI_INIT_W4_SEND_RESET: 1802 log_info("Resend HCI Reset"); 1803 hci_stack->substate = HCI_INIT_SEND_RESET; 1804 hci_stack->num_cmd_packets = 1; 1805 hci_run(); 1806 break; 1807 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1808 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1809 if (hci_stack->hci_transport->reset_link){ 1810 hci_stack->hci_transport->reset_link(); 1811 } 1812 1813 /* fall through */ 1814 1815 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1816 log_info("Resend HCI Reset - CSR Warm Boot"); 1817 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1818 hci_stack->num_cmd_packets = 1; 1819 hci_run(); 1820 break; 1821 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1822 if (hci_stack->hci_transport->set_baudrate){ 1823 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1824 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1825 hci_stack->hci_transport->set_baudrate(baud_rate); 1826 } 1827 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1828 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1829 if (hci_stack->hci_transport->reset_link){ 1830 log_info("Link Reset"); 1831 hci_stack->hci_transport->reset_link(); 1832 } 1833 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1834 hci_run(); 1835 } 1836 break; 1837 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1838 // otherwise continue 1839 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1840 hci_send_cmd(&hci_read_local_supported_commands); 1841 break; 1842 default: 1843 break; 1844 } 1845 } 1846 #endif 1847 1848 static void hci_initializing_next_state(void){ 1849 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1850 } 1851 1852 static void hci_init_done(void){ 1853 // done. tell the app 1854 log_info("hci_init_done -> HCI_STATE_WORKING"); 1855 hci_stack->state = HCI_STATE_WORKING; 1856 hci_emit_state(); 1857 } 1858 1859 // assumption: hci_can_send_command_packet_now() == true 1860 static void hci_initializing_run(void){ 1861 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1862 1863 if (!hci_can_send_command_packet_now()) return; 1864 1865 #ifndef HAVE_HOST_CONTROLLER_API 1866 bool need_baud_change = hci_stack->config 1867 && hci_stack->chipset 1868 && hci_stack->chipset->set_baudrate_command 1869 && hci_stack->hci_transport->set_baudrate 1870 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1871 #endif 1872 1873 switch (hci_stack->substate){ 1874 case HCI_INIT_SEND_RESET: 1875 hci_state_reset(); 1876 1877 #ifndef HAVE_HOST_CONTROLLER_API 1878 // prepare reset if command complete not received in 100ms 1879 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1880 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1881 btstack_run_loop_add_timer(&hci_stack->timeout); 1882 #endif 1883 // send command 1884 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1885 hci_send_cmd(&hci_reset); 1886 break; 1887 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1888 hci_send_cmd(&hci_read_local_version_information); 1889 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1890 break; 1891 1892 #ifndef HAVE_HOST_CONTROLLER_API 1893 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1894 hci_state_reset(); 1895 // prepare reset if command complete not received in 100ms 1896 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1897 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1898 btstack_run_loop_add_timer(&hci_stack->timeout); 1899 // send command 1900 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1901 hci_send_cmd(&hci_reset); 1902 break; 1903 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1904 hci_state_reset(); 1905 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1906 hci_send_cmd(&hci_reset); 1907 break; 1908 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1909 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1910 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1911 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1912 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1913 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1914 break; 1915 } 1916 case HCI_INIT_SET_BD_ADDR: 1917 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1918 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1919 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1920 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1921 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1922 break; 1923 case HCI_INIT_SEND_READ_LOCAL_NAME: 1924 #ifdef ENABLE_CLASSIC 1925 hci_send_cmd(&hci_read_local_name); 1926 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1927 break; 1928 #endif 1929 /* fall through */ 1930 1931 case HCI_INIT_SEND_BAUD_CHANGE: 1932 if (need_baud_change) { 1933 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1934 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1935 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1936 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1937 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1938 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1939 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1940 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1941 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1942 btstack_run_loop_add_timer(&hci_stack->timeout); 1943 } 1944 break; 1945 } 1946 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1947 1948 /* fall through */ 1949 1950 case HCI_INIT_CUSTOM_INIT: 1951 case HCI_INIT_CUSTOM_PRE_INIT: 1952 // Custom initialization 1953 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1954 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1955 bool send_cmd = false; 1956 switch (hci_stack->chipset_result){ 1957 case BTSTACK_CHIPSET_VALID_COMMAND: 1958 send_cmd = true; 1959 switch (hci_stack->substate){ 1960 case HCI_INIT_CUSTOM_INIT: 1961 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1962 break; 1963 case HCI_INIT_CUSTOM_PRE_INIT: 1964 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1965 break; 1966 default: 1967 btstack_assert(false); 1968 break; 1969 } 1970 break; 1971 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1972 send_cmd = true; 1973 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1974 log_info("CSR Warm Boot"); 1975 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1976 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1977 btstack_run_loop_add_timer(&hci_stack->timeout); 1978 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1979 && hci_stack->config 1980 && hci_stack->chipset 1981 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1982 && hci_stack->hci_transport->set_baudrate 1983 && hci_transport_uart_get_main_baud_rate()){ 1984 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1985 } else { 1986 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1987 } 1988 break; 1989 default: 1990 break; 1991 } 1992 1993 if (send_cmd){ 1994 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1995 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1996 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1997 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1998 break; 1999 } 2000 log_info("Init script done"); 2001 2002 // Custom Pre-Init complete, start regular init with HCI Reset 2003 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2004 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2005 hci_send_cmd(&hci_reset); 2006 break; 2007 } 2008 2009 // Init script download on Broadcom chipsets causes: 2010 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2011 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2012 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2013 2014 // - baud rate to reset, restore UART baud rate if needed 2015 if (need_baud_change) { 2016 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2017 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2018 hci_stack->hci_transport->set_baudrate(baud_rate); 2019 } 2020 2021 uint16_t bcm_delay_ms = 300; 2022 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2023 // -> Work around: wait here. 2024 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2025 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2026 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2027 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2028 btstack_run_loop_add_timer(&hci_stack->timeout); 2029 break; 2030 } 2031 } 2032 #endif 2033 /* fall through */ 2034 2035 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2036 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2037 hci_send_cmd(&hci_read_local_supported_commands); 2038 break; 2039 case HCI_INIT_READ_BD_ADDR: 2040 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2041 hci_send_cmd(&hci_read_bd_addr); 2042 break; 2043 case HCI_INIT_READ_BUFFER_SIZE: 2044 // only read buffer size if supported 2045 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2046 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2047 hci_send_cmd(&hci_read_buffer_size); 2048 break; 2049 } 2050 2051 /* fall through */ 2052 2053 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2054 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2055 hci_send_cmd(&hci_read_local_supported_features); 2056 break; 2057 2058 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2059 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2060 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2061 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2062 break; 2063 case HCI_INIT_HOST_BUFFER_SIZE: 2064 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2065 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2066 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2067 break; 2068 #endif 2069 2070 case HCI_INIT_SET_EVENT_MASK: 2071 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2072 if (hci_le_supported()){ 2073 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2074 } else { 2075 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2076 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2077 } 2078 break; 2079 2080 case HCI_INIT_SET_EVENT_MASK_2: 2081 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2082 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2083 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2084 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2085 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2086 // Encryption Change Event v2 - bit 25 2087 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2088 break; 2089 } 2090 2091 #ifdef ENABLE_CLASSIC 2092 /* fall through */ 2093 2094 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2095 if (hci_classic_supported() && gap_ssp_supported()){ 2096 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2097 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2098 break; 2099 } 2100 2101 /* fall through */ 2102 2103 case HCI_INIT_WRITE_INQUIRY_MODE: 2104 if (hci_classic_supported()){ 2105 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2106 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2107 break; 2108 } 2109 2110 /* fall through */ 2111 2112 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2113 // skip write secure connections host support if not supported or disabled 2114 if (hci_classic_supported() && hci_stack->secure_connections_enable 2115 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2116 hci_stack->secure_connections_active = true; 2117 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2118 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2119 break; 2120 } 2121 2122 /* fall through */ 2123 2124 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2125 // skip set min encryption key size 2126 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2127 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2128 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2129 break; 2130 } 2131 2132 #ifdef ENABLE_SCO_OVER_HCI 2133 /* fall through */ 2134 2135 // only sent if ENABLE_SCO_OVER_HCI is defined 2136 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2137 // skip write synchronous flow control if not supported 2138 if (hci_classic_supported() 2139 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2140 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2141 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2142 break; 2143 } 2144 /* fall through */ 2145 2146 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2147 // skip write default erroneous data reporting if not supported 2148 if (hci_classic_supported() 2149 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2150 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2151 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2152 break; 2153 } 2154 #endif 2155 2156 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2157 /* fall through */ 2158 2159 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2160 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2161 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2162 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2163 #ifdef ENABLE_SCO_OVER_HCI 2164 log_info("BCM: Route SCO data via HCI transport"); 2165 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2166 #endif 2167 #ifdef ENABLE_SCO_OVER_PCM 2168 log_info("BCM: Route SCO data via PCM interface"); 2169 #ifdef ENABLE_BCM_PCM_WBS 2170 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2171 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2172 #else 2173 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2174 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2175 #endif 2176 #endif 2177 break; 2178 } 2179 #endif 2180 2181 #ifdef ENABLE_SCO_OVER_PCM 2182 /* fall through */ 2183 2184 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2185 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2186 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2187 log_info("BCM: Config PCM interface for I2S"); 2188 #ifdef ENABLE_BCM_PCM_WBS 2189 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2190 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2191 #else 2192 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2193 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2194 #endif 2195 break; 2196 } 2197 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2198 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2199 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2200 log_info("BCM: Config PCM Data format"); 2201 // msb first, fill bits 0, left justified 2202 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2203 break; 2204 } 2205 #ifdef HAVE_BCM_PCM2 2206 case HCI_INIT_BCM_PCM2_SETUP: 2207 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2208 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2209 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2210 uint32_t pcm_clock_freq; 2211 uint8_t ch_0_period; 2212 #ifdef ENABLE_BCM_PCM_WBS 2213 // 512 kHz, resample 8 kHz to 16 khz 2214 pcm_clock_freq = 512000; 2215 ch_0_period = 1; 2216 #else 2217 // 256 khz, 8 khz output 2218 pcm_clock_freq = 256000; 2219 ch_0_period = 0; 2220 #endif 2221 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2222 hci_send_cmd(&hci_bcm_pcm2_setup, 2223 0x00, // Action = Write 2224 0x00, // Test_Options = None 2225 op_mode, // Op_Mode 2226 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2227 pcm_clock_freq, // PCM_Clock_Freq 2228 0x01, // Sync_Signal_Width 2229 0x0F, // Slot_Width 2230 0x01, // NumberOfSlots 2231 0x00, // Bank_0_Fill_Mode = 0s 2232 0x00, // Bank_0_Number_of_Fill_Bits 2233 0x00, // Bank_0_Programmable_Fill_Data 2234 0x00, // Bank_1_Fill_Mode = 0s 2235 0x00, // Bank_1_Number_of_Fill_Bits 2236 0x00, // Bank_1_Programmable_Fill_Data 2237 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2238 0x00, // Ch_0_Slot_Number 2239 0x01, // Ch_1_Slot_Number 2240 0x02, // Ch_2_Slot_Number 2241 0x03, // Ch_3_Slot_Number 2242 0x04, // Ch_4_Slot_Number 2243 ch_0_period, // Ch_0_Period 2244 0x00, // Ch_1_Period 2245 0x00 // Ch_2_Period 2246 ); 2247 break; 2248 } 2249 #endif 2250 #endif /* ENABLE_SCO_OVER_PCM */ 2251 #endif /* ENABLE_CLASSIC */ 2252 2253 #ifdef ENABLE_BLE 2254 /* fall through */ 2255 2256 // LE INIT 2257 case HCI_INIT_LE_READ_BUFFER_SIZE: 2258 if (hci_le_supported()){ 2259 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2260 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2261 hci_send_cmd(&hci_le_read_buffer_size_v2); 2262 } else { 2263 hci_send_cmd(&hci_le_read_buffer_size); 2264 } 2265 break; 2266 } 2267 2268 /* fall through */ 2269 2270 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2271 // skip write le host if not supported (e.g. on LE only EM9301) 2272 if (hci_le_supported() 2273 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2274 // LE Supported Host = 1, Simultaneous Host = 0 2275 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2276 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2277 break; 2278 } 2279 2280 /* fall through */ 2281 2282 case HCI_INIT_LE_SET_EVENT_MASK: 2283 if (hci_le_supported()){ 2284 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2285 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2286 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2287 #else 2288 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2289 #endif 2290 break; 2291 } 2292 #endif 2293 2294 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2295 /* fall through */ 2296 2297 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2298 if (hci_le_supported() 2299 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2300 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2301 hci_send_cmd(&hci_le_read_maximum_data_length); 2302 break; 2303 } 2304 2305 /* fall through */ 2306 2307 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2308 if (hci_le_supported() 2309 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2310 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2311 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2312 break; 2313 } 2314 #endif 2315 2316 #ifdef ENABLE_LE_CENTRAL 2317 /* fall through */ 2318 2319 case HCI_INIT_READ_WHITE_LIST_SIZE: 2320 if (hci_le_supported()){ 2321 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2322 hci_send_cmd(&hci_le_read_white_list_size); 2323 break; 2324 } 2325 2326 #endif 2327 2328 #ifdef ENABLE_LE_PERIPHERAL 2329 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2330 /* fall through */ 2331 2332 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2333 if (hci_extended_advertising_supported()){ 2334 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2335 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2336 break; 2337 } 2338 #endif 2339 #endif 2340 /* fall through */ 2341 2342 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2343 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2344 if (hci_le_supported()) { 2345 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2346 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2347 break; 2348 } 2349 #endif 2350 2351 /* fall through */ 2352 2353 case HCI_INIT_DONE: 2354 hci_stack->substate = HCI_INIT_DONE; 2355 // main init sequence complete 2356 #ifdef ENABLE_CLASSIC 2357 // check if initial Classic GAP Tasks are completed 2358 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2359 hci_run_gap_tasks_classic(); 2360 break; 2361 } 2362 #endif 2363 #ifdef ENABLE_BLE 2364 #ifdef ENABLE_LE_CENTRAL 2365 // check if initial LE GAP Tasks are completed 2366 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2367 hci_run_general_gap_le(); 2368 break; 2369 } 2370 #endif 2371 #endif 2372 hci_init_done(); 2373 break; 2374 2375 default: 2376 return; 2377 } 2378 } 2379 2380 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2381 bool command_completed = false; 2382 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2383 uint16_t opcode = little_endian_read_16(packet,3); 2384 if (opcode == hci_stack->last_cmd_opcode){ 2385 command_completed = true; 2386 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2387 } else { 2388 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2389 } 2390 } 2391 2392 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2393 uint8_t status = packet[2]; 2394 uint16_t opcode = little_endian_read_16(packet,4); 2395 if (opcode == hci_stack->last_cmd_opcode){ 2396 if (status){ 2397 command_completed = true; 2398 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2399 } else { 2400 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2401 } 2402 } else { 2403 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2404 } 2405 } 2406 #ifndef HAVE_HOST_CONTROLLER_API 2407 // Vendor == CSR 2408 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2409 // TODO: track actual command 2410 command_completed = true; 2411 } 2412 2413 // Vendor == Toshiba 2414 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2415 // TODO: track actual command 2416 command_completed = true; 2417 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2418 hci_stack->num_cmd_packets = 1; 2419 } 2420 #endif 2421 2422 return command_completed; 2423 } 2424 2425 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2426 2427 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2428 2429 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2430 2431 #ifndef HAVE_HOST_CONTROLLER_API 2432 2433 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2434 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2435 // 2436 // HCI Reset 2437 // Timeout 100 ms 2438 // HCI Reset 2439 // Command Complete Reset 2440 // HCI Read Local Version Information 2441 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2442 // hang... 2443 // 2444 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2445 if (!command_completed 2446 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2447 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2448 2449 uint16_t opcode = little_endian_read_16(packet,3); 2450 if (opcode == hci_reset.opcode){ 2451 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2452 return; 2453 } 2454 } 2455 2456 // CSR & H5 2457 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2458 if (!command_completed 2459 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2460 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2461 2462 uint16_t opcode = little_endian_read_16(packet,3); 2463 if (opcode == hci_reset.opcode){ 2464 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2465 return; 2466 } 2467 } 2468 2469 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2470 // fix: Correct substate and behave as command below 2471 if (command_completed){ 2472 switch (hci_stack->substate){ 2473 case HCI_INIT_SEND_RESET: 2474 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2475 break; 2476 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2477 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2478 break; 2479 default: 2480 break; 2481 } 2482 } 2483 2484 #endif 2485 2486 if (!command_completed) return; 2487 2488 bool need_baud_change = false; 2489 bool need_addr_change = false; 2490 2491 #ifndef HAVE_HOST_CONTROLLER_API 2492 need_baud_change = hci_stack->config 2493 && hci_stack->chipset 2494 && hci_stack->chipset->set_baudrate_command 2495 && hci_stack->hci_transport->set_baudrate 2496 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2497 2498 need_addr_change = hci_stack->custom_bd_addr_set 2499 && hci_stack->chipset 2500 && hci_stack->chipset->set_bd_addr_command; 2501 #endif 2502 2503 switch(hci_stack->substate){ 2504 2505 #ifndef HAVE_HOST_CONTROLLER_API 2506 case HCI_INIT_SEND_RESET: 2507 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2508 // fix: just correct substate and behave as command below 2509 2510 /* fall through */ 2511 #endif 2512 2513 case HCI_INIT_W4_SEND_RESET: 2514 btstack_run_loop_remove_timer(&hci_stack->timeout); 2515 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2516 return; 2517 2518 #ifndef HAVE_HOST_CONTROLLER_API 2519 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2520 // for STLC2500D, baud rate change already happened. 2521 // for others, baud rate gets changed now 2522 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2523 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2524 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2525 hci_stack->hci_transport->set_baudrate(baud_rate); 2526 } 2527 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2528 return; 2529 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2530 btstack_run_loop_remove_timer(&hci_stack->timeout); 2531 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2532 return; 2533 case HCI_INIT_W4_CUSTOM_INIT: 2534 // repeat custom init 2535 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2536 return; 2537 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2538 // repeat custom init 2539 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2540 return; 2541 #endif 2542 2543 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2544 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2545 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2546 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2547 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2548 return; 2549 } 2550 if (need_addr_change){ 2551 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2552 return; 2553 } 2554 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2555 return; 2556 #ifndef HAVE_HOST_CONTROLLER_API 2557 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2558 if (need_baud_change){ 2559 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2560 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2561 hci_stack->hci_transport->set_baudrate(baud_rate); 2562 } 2563 if (need_addr_change){ 2564 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2565 return; 2566 } 2567 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2568 return; 2569 case HCI_INIT_W4_SET_BD_ADDR: 2570 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2571 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2572 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2573 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2574 return; 2575 } 2576 // skipping st warm boot 2577 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2578 return; 2579 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2580 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2581 return; 2582 #endif 2583 2584 case HCI_INIT_DONE: 2585 // set state if we came here by fall through 2586 hci_stack->substate = HCI_INIT_DONE; 2587 return; 2588 2589 default: 2590 break; 2591 } 2592 hci_initializing_next_state(); 2593 } 2594 2595 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2596 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2597 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2598 // check if we have been aware of the HCI connection 2599 switch (conn->state){ 2600 case SENT_CREATE_CONNECTION: 2601 case RECEIVED_CONNECTION_REQUEST: 2602 case ACCEPTED_CONNECTION_REQUEST: 2603 break; 2604 default: 2605 return; 2606 } 2607 2608 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2609 bd_addr_t bd_address; 2610 (void)memcpy(&bd_address, conn->address, 6); 2611 2612 #ifdef ENABLE_CLASSIC 2613 // cache needed data 2614 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2615 #endif 2616 2617 // connection failed, remove entry 2618 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2619 btstack_memory_hci_connection_free( conn ); 2620 2621 #ifdef ENABLE_CLASSIC 2622 // notify client if dedicated bonding 2623 if (notify_dedicated_bonding_failed){ 2624 log_info("hci notify_dedicated_bonding_failed"); 2625 hci_emit_dedicated_bonding_result(bd_address, status); 2626 } 2627 2628 // if authentication error, also delete link key 2629 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2630 gap_drop_link_key_for_bd_addr(bd_address); 2631 } 2632 #else 2633 UNUSED(status); 2634 #endif 2635 } 2636 2637 #ifdef ENABLE_CLASSIC 2638 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2639 // SSP Controller 2640 if (features[6] & (1 << 3)){ 2641 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2642 } 2643 // eSCO 2644 if (features[3] & (1<<7)){ 2645 conn->remote_supported_features[0] |= 1; 2646 } 2647 // Extended features 2648 if (features[7] & (1<<7)){ 2649 conn->remote_supported_features[0] |= 2; 2650 } 2651 // SCO packet types 2652 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2653 } 2654 2655 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2656 // SSP Host 2657 if (features[0] & (1 << 0)){ 2658 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2659 } 2660 // SC Host 2661 if (features[0] & (1 << 3)){ 2662 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2663 } 2664 } 2665 2666 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2667 // SC Controller 2668 if (features[1] & (1 << 0)){ 2669 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2670 } 2671 } 2672 2673 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2674 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2675 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2676 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2677 if (conn->bonding_flags & BONDING_DEDICATED){ 2678 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2679 } 2680 } 2681 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2682 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2683 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2684 } 2685 2686 #endif 2687 2688 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2689 // handle BT initialization 2690 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2691 hci_initializing_event_handler(packet, size); 2692 } 2693 2694 // help with BT sleep 2695 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2696 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2697 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2698 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2699 hci_initializing_next_state(); 2700 } 2701 } 2702 2703 #ifdef ENABLE_CLASSIC 2704 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2705 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2706 conn->requested_security_level = LEVEL_0; 2707 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2708 hci_emit_security_level(conn->con_handle, security_level); 2709 2710 // dedicated bonding 2711 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2712 conn->bonding_flags &= ~BONDING_DEDICATED; 2713 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2714 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2715 // emit dedicated bonding complete, don't disconnect 2716 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2717 #else 2718 // request disconnect, event is emitted after disconnect 2719 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2720 #endif 2721 } 2722 } 2723 2724 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2725 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2726 conn->encryption_key_size = encryption_key_size; 2727 2728 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2729 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2730 hci_handle_mutual_authentication_completed(conn); 2731 } else { 2732 // otherwise trigger remote feature request and send authentication request 2733 hci_trigger_remote_features_for_connection(conn); 2734 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2735 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2736 } 2737 } 2738 } 2739 #endif 2740 2741 static void hci_store_local_supported_commands(const uint8_t * packet){ 2742 // create mapping table 2743 #define X(name, offset, bit) { offset, bit }, 2744 static struct { 2745 uint8_t byte_offset; 2746 uint8_t bit_position; 2747 } supported_hci_commands_map [] = { 2748 SUPPORTED_HCI_COMMANDS 2749 }; 2750 #undef X 2751 2752 // create names for debug purposes 2753 #ifdef ENABLE_LOG_DEBUG 2754 #define X(name, offset, bit) #name, 2755 static const char * command_names[] = { 2756 SUPPORTED_HCI_COMMANDS 2757 }; 2758 #undef X 2759 #endif 2760 2761 hci_stack->local_supported_commands = 0; 2762 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2763 uint16_t i; 2764 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2765 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2766 #ifdef ENABLE_LOG_DEBUG 2767 log_info("Command %s (%u) supported %u/%u", command_names[i], i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2768 #else 2769 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2770 #endif 2771 hci_stack->local_supported_commands |= (1LU << i); 2772 } 2773 } 2774 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2775 } 2776 2777 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2778 UNUSED(size); 2779 2780 uint8_t status = 0; 2781 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2782 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2783 } 2784 uint16_t manufacturer; 2785 #ifdef ENABLE_CLASSIC 2786 hci_connection_t * conn; 2787 #endif 2788 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2789 hci_con_handle_t handle; 2790 #endif 2791 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2792 le_audio_cig_t * cig; 2793 #endif 2794 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2795 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2796 #endif 2797 2798 // get num cmd packets - limit to 1 to reduce complexity 2799 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2800 2801 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2802 switch (opcode){ 2803 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2804 if (status) break; 2805 // terminate, name 248 chars 2806 packet[6+248] = 0; 2807 log_info("local name: %s", &packet[6]); 2808 break; 2809 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2810 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2811 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2812 uint16_t acl_len = little_endian_read_16(packet, 6); 2813 uint16_t sco_len = packet[8]; 2814 2815 // determine usable ACL/SCO payload size 2816 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2817 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2818 2819 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2820 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2821 2822 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2823 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2824 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2825 } 2826 break; 2827 case HCI_OPCODE_HCI_READ_RSSI: 2828 if (status == ERROR_CODE_SUCCESS){ 2829 uint8_t event[5]; 2830 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2831 event[1] = 3; 2832 (void)memcpy(&event[2], &packet[6], 3); 2833 hci_emit_event(event, sizeof(event), 1); 2834 } 2835 break; 2836 #ifdef ENABLE_BLE 2837 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2838 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2839 hci_stack->le_iso_packets_total_num = packet[11]; 2840 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2841 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2842 2843 /* fall through */ 2844 2845 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2846 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2847 hci_stack->le_acl_packets_total_num = packet[8]; 2848 // determine usable ACL payload size 2849 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2850 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2851 } 2852 log_info("hci_le_read_buffer_size: acl size %u, acl count %u", hci_stack->le_data_packets_length, hci_stack->le_acl_packets_total_num); 2853 break; 2854 #endif 2855 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2856 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2857 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2858 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2859 log_info("hci_le_read_maximum_data_length: tx octets %u, tx time %u us", hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2860 break; 2861 #endif 2862 #ifdef ENABLE_LE_CENTRAL 2863 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2864 hci_stack->le_whitelist_capacity = packet[6]; 2865 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2866 break; 2867 #endif 2868 #ifdef ENABLE_LE_PERIPHERAL 2869 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2870 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2871 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2872 break; 2873 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2874 if (hci_stack->le_advertising_set_in_current_command != 0) { 2875 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2876 hci_stack->le_advertising_set_in_current_command = 0; 2877 if (advertising_set == NULL) break; 2878 uint8_t adv_status = packet[6]; 2879 uint8_t tx_power = packet[7]; 2880 uint8_t event[] = { HCI_EVENT_META_GAP, 4, GAP_SUBEVENT_ADVERTISING_SET_INSTALLED, hci_stack->le_advertising_set_in_current_command, adv_status, tx_power }; 2881 if (adv_status == 0){ 2882 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2883 } 2884 hci_emit_event(event, sizeof(event), 1); 2885 } 2886 break; 2887 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2888 if (hci_stack->le_advertising_set_in_current_command != 0) { 2889 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2890 hci_stack->le_advertising_set_in_current_command = 0; 2891 if (advertising_set == NULL) break; 2892 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2893 if (status == 0){ 2894 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2895 } 2896 hci_emit_event(event, sizeof(event), 1); 2897 } 2898 break; 2899 #endif 2900 #endif 2901 case HCI_OPCODE_HCI_READ_BD_ADDR: 2902 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2903 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2904 #ifdef ENABLE_CLASSIC 2905 if (hci_stack->link_key_db){ 2906 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2907 } 2908 #endif 2909 break; 2910 #ifdef ENABLE_CLASSIC 2911 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2912 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2913 break; 2914 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2915 if (status == ERROR_CODE_SUCCESS) { 2916 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2917 } else { 2918 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2919 } 2920 break; 2921 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2922 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2923 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2924 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2925 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2926 hci_emit_event(event, sizeof(event), 1); 2927 } 2928 break; 2929 #endif 2930 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2931 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2932 2933 #ifdef ENABLE_CLASSIC 2934 // determine usable ACL packet types based on host buffer size and supported features 2935 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2936 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2937 // determine usable SCO packet types based on supported features 2938 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2939 &hci_stack->local_supported_features[0]); 2940 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2941 #endif 2942 // Classic/LE 2943 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2944 break; 2945 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2946 manufacturer = little_endian_read_16(packet, 10); 2947 // map Cypress & Infineon to Broadcom 2948 switch (manufacturer){ 2949 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2950 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2951 log_info("Treat Cypress/Infineon as Broadcom"); 2952 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2953 little_endian_store_16(packet, 10, manufacturer); 2954 break; 2955 default: 2956 break; 2957 } 2958 hci_stack->manufacturer = manufacturer; 2959 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2960 break; 2961 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2962 hci_store_local_supported_commands(packet); 2963 break; 2964 #ifdef ENABLE_CLASSIC 2965 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2966 if (status) return; 2967 hci_stack->synchronous_flow_control_enabled = 1; 2968 break; 2969 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2970 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2971 conn = hci_connection_for_handle(handle); 2972 if (conn != NULL) { 2973 uint8_t key_size = 0; 2974 if (status == 0){ 2975 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2976 log_info("Handle %04x key Size: %u", handle, key_size); 2977 } else { 2978 key_size = 1; 2979 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2980 } 2981 hci_handle_read_encryption_key_size_complete(conn, key_size); 2982 } 2983 break; 2984 // assert pairing complete event is emitted. 2985 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2986 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2987 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2988 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2989 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2990 // lookup connection by gap pairing addr 2991 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2992 if (conn == NULL) break; 2993 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2994 break; 2995 2996 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2997 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2998 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2999 uint8_t event[67]; 3000 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3001 event[1] = 65; 3002 (void)memset(&event[2], 0, 65); 3003 if (status == ERROR_CODE_SUCCESS){ 3004 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3005 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3006 event[2] = 3; 3007 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3008 } else { 3009 event[2] = 1; 3010 } 3011 } 3012 hci_emit_event(event, sizeof(event), 0); 3013 break; 3014 } 3015 3016 // note: only needed if user does not provide OOB data 3017 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3018 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3019 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3020 if (conn == NULL) break; 3021 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3022 break; 3023 #endif 3024 #endif 3025 #ifdef ENABLE_BLE 3026 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3027 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3028 // lookup CIG 3029 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3030 if (cig != NULL){ 3031 uint8_t i = 0; 3032 if (status == ERROR_CODE_SUCCESS){ 3033 // assign CIS handles to pre-allocated CIS 3034 btstack_linked_list_iterator_t it; 3035 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3036 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3037 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3038 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3039 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3040 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3041 iso_stream->cis_handle = cis_handle; 3042 cig->cis_con_handles[i] = cis_handle; 3043 i++; 3044 } 3045 } 3046 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3047 hci_emit_cig_created(cig, status); 3048 } else { 3049 hci_emit_cig_created(cig, status); 3050 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3051 } 3052 } 3053 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3054 break; 3055 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3056 if (status != ERROR_CODE_SUCCESS){ 3057 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3058 } 3059 break; 3060 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3061 if (status != ERROR_CODE_SUCCESS){ 3062 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3063 } 3064 break; 3065 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3066 // lookup BIG by state 3067 btstack_linked_list_iterator_t it; 3068 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3069 while (btstack_linked_list_iterator_has_next(&it)) { 3070 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3071 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3072 if (status == ERROR_CODE_SUCCESS){ 3073 big->state_vars.next_bis++; 3074 if (big->state_vars.next_bis == big->num_bis){ 3075 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3076 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3077 } else { 3078 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3079 } 3080 } else { 3081 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3082 big->state_vars.status = status; 3083 } 3084 return; 3085 } 3086 } 3087 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3088 while (btstack_linked_list_iterator_has_next(&it)) { 3089 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3090 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3091 if (status == ERROR_CODE_SUCCESS){ 3092 big_sync->state_vars.next_bis++; 3093 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3094 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3095 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3096 } else { 3097 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3098 } 3099 } else { 3100 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3101 big_sync->state_vars.status = status; 3102 } 3103 return; 3104 } 3105 } 3106 // Lookup CIS via active group operation 3107 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3108 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3109 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3110 3111 // lookup CIS by state 3112 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3113 while (btstack_linked_list_iterator_has_next(&it)){ 3114 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3115 handle = iso_stream->cis_handle; 3116 bool emit_cis_created = false; 3117 switch (iso_stream->state){ 3118 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3119 if (status != ERROR_CODE_SUCCESS){ 3120 emit_cis_created = true; 3121 break; 3122 } 3123 if (iso_stream->max_sdu_c_to_p > 0){ 3124 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3125 } else { 3126 emit_cis_created = true; 3127 } 3128 break; 3129 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3130 emit_cis_created = true; 3131 break; 3132 default: 3133 break; 3134 } 3135 if (emit_cis_created){ 3136 hci_cis_handle_created(iso_stream, status); 3137 } 3138 } 3139 } else { 3140 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3141 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3142 if (cig != NULL) { 3143 // emit cis created if all ISO Paths have been created 3144 // assume we are central 3145 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3146 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3147 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3148 // if outgoing has been setup, or incoming was setup but outgoing not required 3149 if ((cis_direction == 1) || (outgoing_needed == false)){ 3150 // lookup iso stream by cig/cis 3151 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3152 while (btstack_linked_list_iterator_has_next(&it)) { 3153 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3154 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3155 hci_cis_handle_created(iso_stream, status); 3156 } 3157 } 3158 } 3159 // next state 3160 cig->state_vars.next_cis++; 3161 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3162 } 3163 } 3164 } 3165 break; 3166 } 3167 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3168 // lookup BIG by state 3169 btstack_linked_list_iterator_t it; 3170 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3171 while (btstack_linked_list_iterator_has_next(&it)) { 3172 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3173 uint8_t big_handle = big_sync->big_handle; 3174 switch (big_sync->state){ 3175 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3176 btstack_linked_list_iterator_remove(&it); 3177 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3178 return; 3179 default: 3180 btstack_linked_list_iterator_remove(&it); 3181 hci_emit_big_sync_stopped(big_handle); 3182 return; 3183 } 3184 } 3185 break; 3186 } 3187 #endif 3188 #endif 3189 default: 3190 break; 3191 } 3192 } 3193 3194 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3195 UNUSED(size); 3196 3197 // get num cmd packets - limit to 1 to reduce complexity 3198 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3199 3200 // get opcode and command status 3201 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3202 3203 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3204 uint8_t status = hci_event_command_status_get_status(packet); 3205 #endif 3206 3207 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3208 bd_addr_type_t addr_type; 3209 bd_addr_t addr; 3210 #endif 3211 3212 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3213 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3214 #endif 3215 3216 switch (opcode){ 3217 #ifdef ENABLE_CLASSIC 3218 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3219 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3220 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3221 #endif 3222 #ifdef ENABLE_LE_CENTRAL 3223 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3224 #endif 3225 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3226 addr_type = hci_stack->outgoing_addr_type; 3227 memcpy(addr, hci_stack->outgoing_addr, 6); 3228 3229 // reset outgoing address info 3230 memset(hci_stack->outgoing_addr, 0, 6); 3231 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3232 3233 // on error 3234 if (status != ERROR_CODE_SUCCESS){ 3235 #ifdef ENABLE_LE_CENTRAL 3236 if (hci_is_le_connection_type(addr_type)){ 3237 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3238 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3239 } 3240 #endif 3241 // error => outgoing connection failed 3242 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3243 if (conn != NULL){ 3244 hci_handle_connection_failed(conn, status); 3245 } 3246 } 3247 break; 3248 #endif 3249 #ifdef ENABLE_CLASSIC 3250 case HCI_OPCODE_HCI_INQUIRY: 3251 if (status == ERROR_CODE_SUCCESS) { 3252 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3253 } else { 3254 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3255 } 3256 break; 3257 #endif 3258 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3259 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3260 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3261 if (status == ERROR_CODE_SUCCESS){ 3262 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3263 } else { 3264 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3265 } 3266 break; 3267 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3268 default: 3269 break; 3270 } 3271 } 3272 3273 #ifdef ENABLE_BLE 3274 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3275 gap_event[0] = HCI_EVENT_META_GAP; 3276 gap_event[1] = 36 - 2; 3277 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3278 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3279 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3280 memcpy(&gap_event[3], &hci_event[3], 11); 3281 memset(&gap_event[14], 0, 12); 3282 memcpy(&gap_event[26], &hci_event[14], 7); 3283 memset(&gap_event[33], 0xff, 3); 3284 break; 3285 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3286 memcpy(&gap_event[3], &hci_event[3], 30); 3287 memset(&gap_event[33], 0xff, 3); 3288 break; 3289 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3290 memcpy(&gap_event[3], &hci_event[3], 33); 3291 break; 3292 default: 3293 btstack_unreachable(); 3294 break; 3295 } 3296 } 3297 3298 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3299 bd_addr_t addr; 3300 bd_addr_type_t addr_type; 3301 hci_connection_t * conn; 3302 3303 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3304 uint8_t gap_event[36]; 3305 hci_create_gap_connection_complete_event(hci_event, gap_event); 3306 3307 // read fields 3308 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3309 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3310 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3311 3312 // Connection management 3313 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3314 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3315 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3316 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3317 3318 #ifdef ENABLE_LE_CENTRAL 3319 // handle error: error is reported only to the initiator -> outgoing connection 3320 if (status){ 3321 3322 // handle cancelled outgoing connection 3323 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3324 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3325 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3326 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3327 // reset state 3328 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3329 // get outgoing connection conn struct for direct connect 3330 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3331 conn = gap_get_outgoing_le_connection(); 3332 conn->state = SEND_CREATE_CONNECTION; 3333 } 3334 } 3335 3336 // free connection if cancelled by user (request == IDLE) 3337 if ((conn != NULL) && (hci_stack->le_connecting_request == LE_CONNECTING_IDLE)){ 3338 // remove entry 3339 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3340 btstack_memory_hci_connection_free( conn ); 3341 } 3342 return; 3343 } 3344 #endif 3345 3346 // on success, both hosts receive connection complete event 3347 if (role == HCI_ROLE_MASTER){ 3348 #ifdef ENABLE_LE_CENTRAL 3349 // if we're master, it was an outgoing connection 3350 // note: no hci_connection_t object exists yet for connect with whitelist 3351 3352 // if a identity addresses was used without enhanced connection complete event, 3353 // the connection complete event contains the current random address of the peer device. 3354 // This random address is needed in the case of a re-pairing 3355 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3356 conn = gap_get_outgoing_le_connection(); 3357 // if outgoing connection object is available, check if identity address was used. 3358 // if yes, track resolved random address and provide rpa 3359 // note: we don't update hci le subevent connection complete 3360 if (conn != NULL){ 3361 if (hci_is_le_identity_address_type(conn->address_type)){ 3362 memcpy(&gap_event[20], &gap_event[8], 6); 3363 gap_event[7] = conn->address_type; 3364 reverse_bd_addr(conn->address, &gap_event[8]); 3365 } 3366 } 3367 } 3368 3369 // we're done with it 3370 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3371 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3372 #endif 3373 } else { 3374 #ifdef ENABLE_LE_PERIPHERAL 3375 // if we're slave, it was an incoming connection, advertisements have stopped 3376 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3377 #endif 3378 } 3379 3380 // LE connections are auto-accepted, so just create a connection if there isn't one already 3381 if (!conn){ 3382 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3383 } 3384 3385 // no memory, sorry. 3386 if (!conn){ 3387 return; 3388 } 3389 3390 conn->state = OPEN; 3391 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3392 conn->le_connection_interval = conn_interval; 3393 3394 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3395 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3396 3397 #ifdef ENABLE_LE_PERIPHERAL 3398 if (role == HCI_ROLE_SLAVE){ 3399 hci_update_advertisements_enabled_for_current_roles(); 3400 } 3401 #endif 3402 3403 // init unenhanced att bearer mtu 3404 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3405 conn->att_connection.mtu_exchanged = false; 3406 3407 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3408 3409 // restart timer 3410 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3411 // btstack_run_loop_add_timer(&conn->timeout); 3412 3413 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3414 3415 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3416 hci_emit_event(gap_event, sizeof(gap_event), 1); 3417 3418 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3419 hci_emit_nr_connections_changed(); 3420 } 3421 #endif 3422 3423 #ifdef ENABLE_CLASSIC 3424 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){ 3425 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3426 // LEVEL_4 is tested by l2cap 3427 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3428 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3429 if (level >= LEVEL_3){ 3430 // MITM not possible without keyboard or display 3431 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3432 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3433 3434 // MITM possible if one side has keyboard and the other has keyboard or display 3435 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3436 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3437 3438 // MITM not possible if one side has only display and other side has no keyboard 3439 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3440 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3441 } 3442 // LEVEL 2 requires SSP, which is a given 3443 return true; 3444 } 3445 3446 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3447 // get requested security level 3448 gap_security_level_t requested_security_level = conn->requested_security_level; 3449 if (hci_stack->gap_secure_connections_only_mode){ 3450 requested_security_level = LEVEL_4; 3451 } 3452 3453 // assess security: LEVEL 4 requires SC 3454 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3455 if ((requested_security_level == LEVEL_4) && 3456 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3457 !hci_remote_sc_enabled(conn)){ 3458 log_info("Level 4 required, but SC not supported -> abort"); 3459 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3460 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3461 return; 3462 } 3463 3464 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3465 // - GAP/MOD/NBON/BV-02-C 3466 // - GAP/DM/NBON/BV-01-C 3467 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3468 switch (conn->io_cap_response_auth_req){ 3469 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3470 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3471 if (hci_stack->bondable == false){ 3472 log_info("Dedicated vs. non-bondable -> abort"); 3473 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3474 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3475 return; 3476 } 3477 default: 3478 break; 3479 } 3480 } 3481 3482 // assess security based on io capabilities 3483 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3484 // responder: fully validate io caps of both sides as well as OOB data 3485 bool security_possible = false; 3486 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3487 3488 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3489 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3490 // so we merge the OOB data availability 3491 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3492 if (conn->classic_oob_c_192 != NULL){ 3493 have_oob_data |= 1; 3494 } 3495 if (conn->classic_oob_c_256 != NULL){ 3496 have_oob_data |= 2; 3497 } 3498 // for up to Level 3, either P-192 as well as P-256 will do 3499 // 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 3500 // if remote does not SC, we should not receive P-256 data either 3501 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3502 security_possible = true; 3503 } 3504 // for Level 4, P-256 is needed 3505 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3506 security_possible = true; 3507 } 3508 #endif 3509 3510 if (security_possible == false){ 3511 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3512 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3513 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3514 return; 3515 } 3516 } else { 3517 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3518 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3519 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3520 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3521 log_info("Level 3+ required, but no input/output -> abort"); 3522 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3523 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3524 return; 3525 } 3526 #endif 3527 #endif 3528 } 3529 3530 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3531 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3532 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3533 } else { 3534 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3535 } 3536 #endif 3537 } 3538 3539 #endif 3540 3541 static void event_handler(uint8_t *packet, uint16_t size){ 3542 3543 uint16_t event_length = packet[1]; 3544 3545 // assert packet is complete 3546 if (size != (event_length + 2u)){ 3547 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3548 return; 3549 } 3550 3551 hci_con_handle_t handle; 3552 hci_connection_t * conn; 3553 int i; 3554 3555 #ifdef ENABLE_CLASSIC 3556 hci_link_type_t link_type; 3557 bd_addr_t addr; 3558 bd_addr_type_t addr_type; 3559 #endif 3560 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3561 hci_iso_stream_t * iso_stream; 3562 le_audio_big_t * big; 3563 le_audio_big_sync_t * big_sync; 3564 #endif 3565 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3566 btstack_linked_list_iterator_t it; 3567 #endif 3568 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3569 uint8_t advertising_handle; 3570 #endif 3571 3572 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3573 3574 switch (hci_event_packet_get_type(packet)) { 3575 3576 case HCI_EVENT_COMMAND_COMPLETE: 3577 handle_command_complete_event(packet, size); 3578 break; 3579 3580 case HCI_EVENT_COMMAND_STATUS: 3581 handle_command_status_event(packet, size); 3582 break; 3583 3584 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3585 if (size < 3) return; 3586 uint16_t num_handles = packet[2]; 3587 if (size != (3u + num_handles * 4u)) return; 3588 #ifdef ENABLE_CLASSIC 3589 bool notify_sco = false; 3590 #endif 3591 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3592 bool notify_iso = false; 3593 #endif 3594 uint16_t offset = 3; 3595 for (i=0; i<num_handles;i++){ 3596 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3597 offset += 2u; 3598 uint16_t num_packets = little_endian_read_16(packet, offset); 3599 offset += 2u; 3600 3601 conn = hci_connection_for_handle(handle); 3602 if (conn != NULL) { 3603 3604 if (conn->num_packets_sent >= num_packets) { 3605 conn->num_packets_sent -= num_packets; 3606 } else { 3607 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3608 conn->num_packets_sent = 0; 3609 } 3610 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3611 #ifdef ENABLE_CLASSIC 3612 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3613 notify_sco = true; 3614 } 3615 #endif 3616 } 3617 3618 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3619 hci_controller_dump_packets(); 3620 #endif 3621 3622 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3623 if (conn == NULL){ 3624 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3625 if (iso_stream != NULL){ 3626 if (iso_stream->num_packets_sent >= num_packets) { 3627 iso_stream->num_packets_sent -= num_packets; 3628 } else { 3629 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3630 iso_stream->num_packets_sent = 0; 3631 } 3632 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3633 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3634 if (big != NULL){ 3635 big->num_completed_timestamp_current_valid = true; 3636 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3637 } 3638 } 3639 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3640 num_packets, handle, iso_stream->num_packets_sent); 3641 notify_iso = true; 3642 } 3643 } 3644 #endif 3645 } 3646 3647 #ifdef ENABLE_CLASSIC 3648 if (notify_sco){ 3649 hci_notify_if_sco_can_send_now(); 3650 } 3651 #endif 3652 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3653 if (notify_iso){ 3654 hci_iso_notify_can_send_now(); 3655 } 3656 #endif 3657 break; 3658 } 3659 3660 #ifdef ENABLE_CLASSIC 3661 case HCI_EVENT_FLUSH_OCCURRED: 3662 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3663 handle = hci_event_flush_occurred_get_handle(packet); 3664 conn = hci_connection_for_handle(handle); 3665 if (conn) { 3666 log_info("Flush occurred, disconnect 0x%04x", handle); 3667 conn->state = SEND_DISCONNECT; 3668 } 3669 break; 3670 3671 case HCI_EVENT_INQUIRY_COMPLETE: 3672 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3673 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3674 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3675 hci_emit_event(event, sizeof(event), 1); 3676 } 3677 break; 3678 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3679 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3680 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3681 } 3682 break; 3683 case HCI_EVENT_CONNECTION_REQUEST: 3684 reverse_bd_addr(&packet[2], addr); 3685 link_type = (hci_link_type_t) packet[11]; 3686 3687 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3688 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3689 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3690 bd_addr_copy(hci_stack->decline_addr, addr); 3691 break; 3692 } 3693 3694 if (hci_stack->gap_classic_accept_callback != NULL){ 3695 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3696 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3697 bd_addr_copy(hci_stack->decline_addr, addr); 3698 break; 3699 } 3700 } 3701 3702 // TODO: eval COD 8-10 3703 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3704 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3705 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3706 if (!conn) { 3707 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3708 } 3709 if (!conn) { 3710 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3711 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3712 bd_addr_copy(hci_stack->decline_addr, addr); 3713 hci_run(); 3714 // avoid event to higher layer 3715 return; 3716 } 3717 conn->state = RECEIVED_CONNECTION_REQUEST; 3718 // store info about eSCO 3719 if (link_type == HCI_LINK_TYPE_ESCO){ 3720 conn->remote_supported_features[0] |= 1; 3721 } 3722 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3723 if (addr_type == BD_ADDR_TYPE_SCO){ 3724 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3725 // ACL exists unless fuzzing 3726 if (acl_conn != NULL) { 3727 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3728 } 3729 } 3730 hci_run(); 3731 break; 3732 3733 case HCI_EVENT_CONNECTION_COMPLETE: 3734 // Connection management 3735 reverse_bd_addr(&packet[5], addr); 3736 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3737 addr_type = BD_ADDR_TYPE_ACL; 3738 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3739 if (conn) { 3740 switch (conn->state){ 3741 // expected states 3742 case ACCEPTED_CONNECTION_REQUEST: 3743 case SENT_CREATE_CONNECTION: 3744 break; 3745 // unexpected state -> ignore 3746 default: 3747 // don't forward event to app 3748 return; 3749 } 3750 if (!packet[2]){ 3751 conn->state = OPEN; 3752 conn->con_handle = little_endian_read_16(packet, 3); 3753 3754 // trigger write supervision timeout if we're master 3755 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3756 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3757 } 3758 3759 // trigger write automatic flush timeout 3760 if (hci_stack->automatic_flush_timeout != 0){ 3761 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3762 } 3763 3764 // restart timer 3765 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3766 btstack_run_loop_add_timer(&conn->timeout); 3767 3768 // trigger remote features for dedicated bonding 3769 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3770 hci_trigger_remote_features_for_connection(conn); 3771 } 3772 3773 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3774 3775 hci_emit_nr_connections_changed(); 3776 } else { 3777 // connection failed 3778 hci_handle_connection_failed(conn, packet[2]); 3779 } 3780 } 3781 break; 3782 3783 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3784 reverse_bd_addr(&packet[5], addr); 3785 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3786 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3787 3788 // SCO exists unless fuzzer 3789 if (conn == NULL) break; 3790 3791 if (packet[2] != ERROR_CODE_SUCCESS){ 3792 // connection failed, remove entry 3793 hci_handle_connection_failed(conn, packet[2]); 3794 break; 3795 } 3796 3797 conn->state = OPEN; 3798 conn->con_handle = little_endian_read_16(packet, 3); 3799 3800 // update sco payload length for eSCO connections 3801 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3802 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3803 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3804 } 3805 3806 #ifdef ENABLE_SCO_OVER_HCI 3807 // update SCO 3808 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3809 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3810 } 3811 // trigger can send now 3812 if (hci_have_usb_transport()){ 3813 hci_stack->sco_can_send_now = true; 3814 } 3815 3816 // setup implict sco flow control 3817 conn->sco_tx_ready = 0; 3818 conn->sco_tx_active = 0; 3819 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3820 3821 #endif 3822 #ifdef HAVE_SCO_TRANSPORT 3823 // configure sco transport 3824 if (hci_stack->sco_transport != NULL){ 3825 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3826 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3827 } 3828 #endif 3829 break; 3830 3831 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3832 handle = little_endian_read_16(packet, 3); 3833 conn = hci_connection_for_handle(handle); 3834 if (!conn) break; 3835 if (!packet[2]){ 3836 const uint8_t * features = &packet[5]; 3837 hci_handle_remote_features_page_0(conn, features); 3838 3839 // read extended features if possible 3840 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3841 && ((conn->remote_supported_features[0] & 2) != 0)) { 3842 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3843 break; 3844 } 3845 } 3846 hci_handle_remote_features_received(conn); 3847 break; 3848 3849 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3850 handle = little_endian_read_16(packet, 3); 3851 conn = hci_connection_for_handle(handle); 3852 if (!conn) break; 3853 // status = ok, page = 1 3854 if (!packet[2]) { 3855 uint8_t page_number = packet[5]; 3856 uint8_t maximum_page_number = packet[6]; 3857 const uint8_t * features = &packet[7]; 3858 bool done = false; 3859 switch (page_number){ 3860 case 1: 3861 hci_handle_remote_features_page_1(conn, features); 3862 if (maximum_page_number >= 2){ 3863 // get Secure Connections (Controller) from Page 2 if available 3864 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3865 } else { 3866 // otherwise, assume SC (Controller) == SC (Host) 3867 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3868 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3869 } 3870 done = true; 3871 } 3872 break; 3873 case 2: 3874 hci_handle_remote_features_page_2(conn, features); 3875 done = true; 3876 break; 3877 default: 3878 break; 3879 } 3880 if (!done) break; 3881 } 3882 hci_handle_remote_features_received(conn); 3883 break; 3884 3885 case HCI_EVENT_LINK_KEY_REQUEST: 3886 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3887 hci_event_link_key_request_get_bd_addr(packet, addr); 3888 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3889 if (!conn) break; 3890 3891 // lookup link key in db if not cached 3892 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3893 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3894 } 3895 3896 // response sent by hci_run() 3897 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3898 #endif 3899 break; 3900 3901 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3902 hci_event_link_key_request_get_bd_addr(packet, addr); 3903 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3904 if (!conn) break; 3905 3906 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3907 3908 // CVE-2020-26555: ignore NULL link key 3909 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3910 if (btstack_is_null(&packet[8], 16)) break; 3911 3912 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3913 // Change Connection Encryption keeps link key type 3914 if (link_key_type != CHANGED_COMBINATION_KEY){ 3915 conn->link_key_type = link_key_type; 3916 } 3917 3918 // cache link key. link keys stored in little-endian format for legacy reasons 3919 memcpy(&conn->link_key, &packet[8], 16); 3920 3921 // only store link key: 3922 // - if bondable enabled 3923 if (hci_stack->bondable == false) break; 3924 // - if security level sufficient 3925 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3926 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3927 break; 3928 } 3929 3930 case HCI_EVENT_PIN_CODE_REQUEST: 3931 hci_event_pin_code_request_get_bd_addr(packet, addr); 3932 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3933 if (!conn) break; 3934 3935 hci_pairing_started(conn, false); 3936 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3937 if (!hci_stack->bondable ){ 3938 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3939 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3940 hci_run(); 3941 return; 3942 } 3943 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3944 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3945 log_info("Level 4 required, but SC not supported -> abort"); 3946 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3947 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3948 hci_run(); 3949 return; 3950 } 3951 break; 3952 3953 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3954 hci_event_io_capability_response_get_bd_addr(packet, addr); 3955 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3956 if (!conn) break; 3957 3958 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3959 hci_pairing_started(conn, true); 3960 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3961 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3962 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3963 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3964 #endif 3965 break; 3966 3967 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3968 hci_event_io_capability_response_get_bd_addr(packet, addr); 3969 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3970 if (!conn) break; 3971 3972 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3973 hci_connection_timestamp(conn); 3974 hci_pairing_started(conn, true); 3975 break; 3976 3977 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3978 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3979 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3980 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3981 if (!conn) break; 3982 3983 hci_connection_timestamp(conn); 3984 3985 hci_pairing_started(conn, true); 3986 3987 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3988 break; 3989 #endif 3990 3991 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3992 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3993 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3994 if (!conn) break; 3995 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3996 if (hci_stack->ssp_auto_accept){ 3997 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3998 }; 3999 } else { 4000 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4001 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4002 // don't forward event to app 4003 hci_run(); 4004 return; 4005 } 4006 break; 4007 4008 case HCI_EVENT_USER_PASSKEY_REQUEST: 4009 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4010 if (hci_stack->ssp_auto_accept){ 4011 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4012 }; 4013 break; 4014 4015 case HCI_EVENT_MODE_CHANGE: 4016 handle = hci_event_mode_change_get_handle(packet); 4017 conn = hci_connection_for_handle(handle); 4018 if (!conn) break; 4019 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4020 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4021 break; 4022 #endif 4023 4024 case HCI_EVENT_ENCRYPTION_CHANGE: 4025 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4026 handle = hci_event_encryption_change_get_connection_handle(packet); 4027 conn = hci_connection_for_handle(handle); 4028 if (!conn) break; 4029 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4030 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4031 if (encryption_enabled){ 4032 if (hci_is_le_connection(conn)){ 4033 // For LE, we accept connection as encrypted 4034 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4035 } 4036 #ifdef ENABLE_CLASSIC 4037 else { 4038 4039 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4040 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4041 bool connected_uses_aes_ccm = encryption_enabled == 2; 4042 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4043 #ifdef ENABLE_TESTING_SUPPORT 4044 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4045 // - GAP/SEC/SEM/BI-31-C 4046 // - GAP/SEC/SEM/BI-32-C 4047 // - GAP/SEC/SEM/BI-33-C 4048 4049 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4050 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4051 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4052 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4053 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4054 } 4055 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4056 conn->link_key_type, new_link_key_type); 4057 conn->link_key_type = new_link_key_type; 4058 #else 4059 log_info("SC during pairing, but only E0 now -> abort"); 4060 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4061 break; 4062 #endif 4063 } 4064 4065 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4066 if (connected_uses_aes_ccm){ 4067 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4068 } 4069 4070 #ifdef ENABLE_TESTING_SUPPORT 4071 // work around for issue with PTS dongle 4072 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4073 #endif 4074 // validate encryption key size 4075 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4076 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4077 // already got encryption key size 4078 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4079 } else { 4080 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4081 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4082 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4083 } else { 4084 // if not, pretend everything is perfect 4085 hci_handle_read_encryption_key_size_complete(conn, 16); 4086 } 4087 } 4088 } 4089 #endif 4090 } else { 4091 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4092 } 4093 } else { 4094 #ifdef ENABLE_CLASSIC 4095 if (!hci_is_le_connection(conn)){ 4096 uint8_t status = hci_event_encryption_change_get_status(packet); 4097 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4098 conn->bonding_flags &= ~BONDING_DEDICATED; 4099 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4100 conn->bonding_status = status; 4101 } 4102 // trigger security update -> level 0 4103 hci_handle_mutual_authentication_completed(conn); 4104 } 4105 #endif 4106 } 4107 4108 break; 4109 4110 #ifdef ENABLE_CLASSIC 4111 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4112 handle = hci_event_authentication_complete_get_connection_handle(packet); 4113 conn = hci_connection_for_handle(handle); 4114 if (!conn) break; 4115 4116 // clear authentication active flag 4117 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4118 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4119 4120 // authenticated only if auth status == 0 4121 if (hci_event_authentication_complete_get_status(packet) == 0){ 4122 // authenticated 4123 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4124 4125 // If not already encrypted, start encryption 4126 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4127 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4128 break; 4129 } 4130 } 4131 4132 // emit updated security level (will be 0 if not authenticated) 4133 hci_handle_mutual_authentication_completed(conn); 4134 break; 4135 4136 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4137 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4138 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4139 if (!conn) break; 4140 4141 // treat successfully paired connection as authenticated 4142 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4143 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4144 } 4145 4146 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4147 break; 4148 #endif 4149 4150 // HCI_EVENT_DISCONNECTION_COMPLETE 4151 // has been split, to first notify stack before shutting connection down 4152 // see end of function, too. 4153 case HCI_EVENT_DISCONNECTION_COMPLETE: 4154 if (packet[2]) break; // status != 0 4155 handle = little_endian_read_16(packet, 3); 4156 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4157 if (hci_stack->acl_fragmentation_total_size > 0u) { 4158 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4159 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4160 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4161 hci_stack->acl_fragmentation_total_size = 0; 4162 hci_stack->acl_fragmentation_pos = 0; 4163 if (release_buffer){ 4164 hci_release_packet_buffer(); 4165 } 4166 } 4167 } 4168 4169 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4170 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4171 if (hci_stack->iso_fragmentation_total_size > 0u) { 4172 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4173 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4174 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4175 hci_stack->iso_fragmentation_total_size = 0; 4176 hci_stack->iso_fragmentation_pos = 0; 4177 if (release_buffer){ 4178 hci_release_packet_buffer(); 4179 } 4180 } 4181 } 4182 4183 // finalize iso stream for CIS handle 4184 iso_stream = hci_iso_stream_for_con_handle(handle); 4185 if (iso_stream != NULL){ 4186 hci_iso_stream_finalize(iso_stream); 4187 break; 4188 } 4189 4190 // finalize iso stream(s) for ACL handle 4191 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4192 while (btstack_linked_list_iterator_has_next(&it)){ 4193 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4194 if (iso_stream->acl_handle == handle ) { 4195 hci_iso_stream_finalize(iso_stream); 4196 } 4197 } 4198 #endif 4199 4200 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4201 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4202 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4203 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4204 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4205 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4206 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4207 hci_stack->num_cmd_packets = 1; 4208 } 4209 #endif 4210 4211 conn = hci_connection_for_handle(handle); 4212 if (!conn) break; 4213 #ifdef ENABLE_CLASSIC 4214 // pairing failed if it was ongoing 4215 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4216 #endif 4217 4218 // emit dedicatd bonding event 4219 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4220 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4221 } 4222 4223 // mark connection for shutdown, stop timers, reset state 4224 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4225 hci_connection_stop_timer(conn); 4226 hci_connection_init(conn); 4227 4228 #ifdef ENABLE_BLE 4229 #ifdef ENABLE_LE_PERIPHERAL 4230 // re-enable advertisements for le connections if active 4231 if (hci_is_le_connection(conn)){ 4232 hci_update_advertisements_enabled_for_current_roles(); 4233 } 4234 #endif 4235 #endif 4236 break; 4237 4238 case HCI_EVENT_HARDWARE_ERROR: 4239 log_error("Hardware Error: 0x%02x", packet[2]); 4240 if (hci_stack->hardware_error_callback){ 4241 (*hci_stack->hardware_error_callback)(packet[2]); 4242 } else { 4243 // if no special requests, just reboot stack 4244 hci_power_control_off(); 4245 hci_power_control_on(); 4246 } 4247 break; 4248 4249 #ifdef ENABLE_CLASSIC 4250 case HCI_EVENT_ROLE_CHANGE: 4251 if (packet[2]) break; // status != 0 4252 reverse_bd_addr(&packet[3], addr); 4253 addr_type = BD_ADDR_TYPE_ACL; 4254 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4255 if (!conn) break; 4256 conn->role = (hci_role_t) packet[9]; 4257 break; 4258 #endif 4259 4260 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4261 // release packet buffer only for asynchronous transport and if there are not further fragments 4262 if (hci_transport_synchronous()) { 4263 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4264 return; // instead of break: to avoid re-entering hci_run() 4265 } 4266 hci_stack->acl_fragmentation_tx_active = 0; 4267 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4268 hci_stack->iso_fragmentation_tx_active = 0; 4269 if (hci_stack->iso_fragmentation_total_size) break; 4270 #endif 4271 if (hci_stack->acl_fragmentation_total_size) break; 4272 hci_release_packet_buffer(); 4273 4274 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4275 hci_iso_notify_can_send_now(); 4276 #endif 4277 // L2CAP receives this event via the hci_emit_event below 4278 4279 #ifdef ENABLE_CLASSIC 4280 // For SCO, we do the can_send_now_check here 4281 hci_notify_if_sco_can_send_now(); 4282 #endif 4283 break; 4284 4285 #ifdef ENABLE_CLASSIC 4286 case HCI_EVENT_SCO_CAN_SEND_NOW: 4287 // For SCO, we do the can_send_now_check here 4288 hci_stack->sco_can_send_now = true; 4289 hci_notify_if_sco_can_send_now(); 4290 return; 4291 4292 // explode inquriy results for easier consumption 4293 case HCI_EVENT_INQUIRY_RESULT: 4294 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4295 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4296 gap_inquiry_explode(packet, size); 4297 break; 4298 #endif 4299 4300 #ifdef ENABLE_BLE 4301 case HCI_EVENT_LE_META: 4302 switch (packet[2]){ 4303 #ifdef ENABLE_LE_CENTRAL 4304 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4305 if (!hci_stack->le_scanning_enabled) break; 4306 le_handle_advertisement_report(packet, size); 4307 break; 4308 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4309 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4310 if (!hci_stack->le_scanning_enabled) break; 4311 le_handle_extended_advertisement_report(packet, size); 4312 break; 4313 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4314 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4315 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4316 break; 4317 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4318 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4319 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4320 while (btstack_linked_list_iterator_has_next(&it)) { 4321 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4322 if (advertising_set->advertising_handle == advertising_handle){ 4323 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4324 } 4325 } 4326 break; 4327 #endif 4328 #endif 4329 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4330 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4331 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4332 hci_handle_le_connection_complete_event(packet); 4333 break; 4334 4335 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4336 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4337 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4338 conn = hci_connection_for_handle(handle); 4339 if (!conn) break; 4340 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4341 break; 4342 4343 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4344 // connection 4345 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4346 conn = hci_connection_for_handle(handle); 4347 if (conn) { 4348 // read arguments 4349 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4350 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4351 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4352 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4353 4354 // validate against current connection parameter range 4355 le_connection_parameter_range_t existing_range; 4356 gap_get_connection_parameter_range(&existing_range); 4357 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4358 if (update_parameter){ 4359 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4360 conn->le_conn_interval_min = le_conn_interval_min; 4361 conn->le_conn_interval_max = le_conn_interval_max; 4362 conn->le_conn_latency = le_conn_latency; 4363 conn->le_supervision_timeout = le_supervision_timeout; 4364 } else { 4365 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4366 } 4367 } 4368 break; 4369 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4370 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4371 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4372 conn = hci_connection_for_handle(handle); 4373 if (conn) { 4374 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4375 } 4376 break; 4377 #endif 4378 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4379 case HCI_SUBEVENT_LE_CIS_REQUEST: 4380 // incoming CIS request, allocate iso stream object and cache metadata 4381 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4382 hci_subevent_le_cis_request_get_cig_id(packet), 4383 hci_subevent_le_cis_request_get_cis_id(packet)); 4384 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4385 if (iso_stream != NULL){ 4386 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4387 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4388 } 4389 break; 4390 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4391 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4392 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4393 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4394 iso_stream = hci_iso_stream_for_con_handle(handle); 4395 btstack_assert(iso_stream != NULL); 4396 // track connection info 4397 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4398 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4399 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4400 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4401 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4402 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4403 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4404 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4405 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4406 // CIS Accept by Peripheral 4407 if (status == ERROR_CODE_SUCCESS){ 4408 if (iso_stream->max_sdu_p_to_c > 0){ 4409 // we're peripheral and we will send data 4410 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4411 } else { 4412 // we're peripheral and we will only receive data 4413 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4414 } 4415 } else { 4416 hci_cis_handle_created(iso_stream, status); 4417 } 4418 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4419 } else { 4420 // CIG Setup by Central 4421 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4422 btstack_assert(cig != NULL); 4423 // update iso stream state 4424 if (status == ERROR_CODE_SUCCESS){ 4425 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4426 } else { 4427 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4428 } 4429 // update cig state 4430 uint8_t i; 4431 for (i=0;i<cig->num_cis;i++){ 4432 if (cig->cis_con_handles[i] == handle){ 4433 cig->cis_setup_active[i] = false; 4434 if (status == ERROR_CODE_SUCCESS){ 4435 cig->cis_established[i] = true; 4436 } else { 4437 hci_cis_handle_created(iso_stream, status); 4438 } 4439 } 4440 } 4441 4442 // trigger iso path setup if complete 4443 bool cis_setup_active = false; 4444 for (i=0;i<cig->num_cis;i++){ 4445 cis_setup_active |= cig->cis_setup_active[i]; 4446 } 4447 if (cis_setup_active == false){ 4448 cig->state_vars.next_cis = 0; 4449 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4450 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4451 } 4452 } 4453 } 4454 break; 4455 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4456 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4457 big = hci_big_for_handle(packet[4]); 4458 if (big != NULL){ 4459 uint8_t status = packet[3]; 4460 if (status == ERROR_CODE_SUCCESS){ 4461 // store bis_con_handles and trigger iso path setup 4462 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4463 uint8_t i; 4464 for (i=0;i<num_bis;i++){ 4465 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4466 big->bis_con_handles[i] = bis_handle; 4467 // assign bis handle 4468 btstack_linked_list_iterator_t it; 4469 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4470 while (btstack_linked_list_iterator_has_next(&it)){ 4471 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4472 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4473 (iso_stream->group_id == big->big_handle)){ 4474 iso_stream->cis_handle = bis_handle; 4475 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4476 break; 4477 } 4478 } 4479 } 4480 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4481 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4482 big->state_vars.next_bis = 0; 4483 } 4484 } else { 4485 // create BIG failed or has been stopped by us 4486 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4487 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4488 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4489 hci_emit_big_created(big, status); 4490 } else { 4491 hci_emit_big_terminated(big); 4492 } 4493 } 4494 } 4495 break; 4496 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4497 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4498 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4499 if (big != NULL){ 4500 // finalize associated ISO streams 4501 btstack_linked_list_iterator_t it; 4502 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4503 while (btstack_linked_list_iterator_has_next(&it)){ 4504 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4505 if (iso_stream->group_id == big->big_handle){ 4506 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4507 btstack_linked_list_iterator_remove(&it); 4508 btstack_memory_hci_iso_stream_free(iso_stream); 4509 } 4510 } 4511 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4512 switch (big->state){ 4513 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4514 hci_emit_big_created(big, big->state_vars.status); 4515 break; 4516 default: 4517 hci_emit_big_terminated(big); 4518 break; 4519 } 4520 } 4521 break; 4522 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4523 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4524 big_sync = hci_big_sync_for_handle(packet[4]); 4525 if (big_sync != NULL){ 4526 uint8_t status = packet[3]; 4527 uint8_t big_handle = packet[4]; 4528 if (status == ERROR_CODE_SUCCESS){ 4529 // store bis_con_handles and trigger iso path setup 4530 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4531 uint8_t i; 4532 for (i=0;i<num_bis;i++){ 4533 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4534 big_sync->bis_con_handles[i] = bis_handle; 4535 // setup iso_stream_t 4536 btstack_linked_list_iterator_t it; 4537 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4538 while (btstack_linked_list_iterator_has_next(&it)){ 4539 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4540 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4541 (iso_stream->group_id == big_sync->big_handle)){ 4542 iso_stream->cis_handle = bis_handle; 4543 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4544 break; 4545 } 4546 } 4547 } 4548 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4549 // trigger iso path setup 4550 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4551 big_sync->state_vars.next_bis = 0; 4552 } 4553 } else { 4554 // create BIG Sync failed or has been stopped by us 4555 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4556 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4557 hci_emit_big_sync_created(big_sync, status); 4558 } else { 4559 hci_emit_big_sync_stopped(big_handle); 4560 } 4561 } 4562 } 4563 break; 4564 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4565 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4566 big_sync = hci_big_sync_for_handle(packet[4]); 4567 if (big_sync != NULL){ 4568 uint8_t big_handle = packet[4]; 4569 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4570 hci_emit_big_sync_stopped(big_handle); 4571 } 4572 break; 4573 #endif 4574 default: 4575 break; 4576 } 4577 break; 4578 #endif 4579 case HCI_EVENT_VENDOR_SPECIFIC: 4580 // Vendor specific commands often create vendor specific event instead of num completed packets 4581 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4582 switch (hci_stack->manufacturer){ 4583 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4584 hci_stack->num_cmd_packets = 1; 4585 break; 4586 default: 4587 break; 4588 } 4589 break; 4590 default: 4591 break; 4592 } 4593 4594 handle_event_for_current_stack_state(packet, size); 4595 4596 // notify upper stack 4597 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4598 4599 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4600 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4601 handle = little_endian_read_16(packet, 3); 4602 hci_connection_t * aConn = hci_connection_for_handle(handle); 4603 // discard connection if app did not trigger a reconnect in the event handler 4604 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4605 hci_shutdown_connection(aConn); 4606 } 4607 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4608 hci_controller_dump_packets(); 4609 #endif 4610 } 4611 4612 // execute main loop 4613 hci_run(); 4614 } 4615 4616 #ifdef ENABLE_CLASSIC 4617 4618 static void sco_handler(uint8_t * packet, uint16_t size){ 4619 // lookup connection struct 4620 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4621 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4622 if (!conn) return; 4623 4624 #ifdef ENABLE_SCO_OVER_HCI 4625 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4626 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4627 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4628 packet[2] = 0x3c; 4629 memmove(&packet[3], &packet[23], 63); 4630 size = 63; 4631 } 4632 } 4633 4634 if (hci_have_usb_transport()){ 4635 // Nothing to do 4636 } else { 4637 // 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); 4638 if (hci_stack->synchronous_flow_control_enabled == 0){ 4639 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4640 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4641 if (conn->sco_tx_active == 0){ 4642 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4643 conn->sco_tx_active = 1; 4644 conn->sco_tx_ready = max_sco_packets; 4645 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4646 hci_notify_if_sco_can_send_now(); 4647 } 4648 } else { 4649 if (conn->sco_tx_ready < max_sco_packets){ 4650 conn->sco_tx_ready++; 4651 } 4652 hci_notify_if_sco_can_send_now(); 4653 } 4654 } 4655 } 4656 #endif 4657 4658 // deliver to app 4659 if (hci_stack->sco_packet_handler) { 4660 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4661 } 4662 4663 #ifdef HAVE_SCO_TRANSPORT 4664 // We can send one packet for each received packet 4665 conn->sco_tx_ready++; 4666 hci_notify_if_sco_can_send_now(); 4667 #endif 4668 4669 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4670 conn->num_packets_completed++; 4671 hci_stack->host_completed_packets = 1; 4672 hci_run(); 4673 #endif 4674 } 4675 #endif 4676 4677 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4678 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4679 // propagate ISO packets received as ACL 4680 hci_iso_stream_t * iso_stream = NULL; 4681 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4682 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4683 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4684 if (iso_stream != NULL){ 4685 packet_type = HCI_ISO_DATA_PACKET; 4686 } 4687 } 4688 #endif 4689 4690 hci_dump_packet(packet_type, 1, packet, size); 4691 switch (packet_type) { 4692 case HCI_EVENT_PACKET: 4693 event_handler(packet, size); 4694 break; 4695 case HCI_ACL_DATA_PACKET: 4696 acl_handler(packet, size); 4697 break; 4698 #ifdef ENABLE_CLASSIC 4699 case HCI_SCO_DATA_PACKET: 4700 sco_handler(packet, size); 4701 break; 4702 #endif 4703 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4704 case HCI_ISO_DATA_PACKET: 4705 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4706 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4707 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4708 } 4709 hci_iso_packet_handler(iso_stream, packet, size); 4710 break; 4711 #endif 4712 default: 4713 break; 4714 } 4715 } 4716 4717 /** 4718 * @brief Add event packet handler. 4719 */ 4720 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4721 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4722 } 4723 4724 /** 4725 * @brief Remove event packet handler. 4726 */ 4727 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4728 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4729 } 4730 4731 /** Register HCI packet handlers */ 4732 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4733 hci_stack->acl_packet_handler = handler; 4734 } 4735 4736 #ifdef ENABLE_CLASSIC 4737 /** 4738 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4739 */ 4740 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4741 hci_stack->sco_packet_handler = handler; 4742 } 4743 #endif 4744 4745 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4746 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4747 hci_stack->iso_packet_handler = handler; 4748 } 4749 #endif 4750 4751 static void hci_state_reset(void){ 4752 // no connections yet 4753 hci_stack->connections = NULL; 4754 4755 // keep discoverable/connectable as this has been requested by the client(s) 4756 // hci_stack->discoverable = 0; 4757 // hci_stack->connectable = 0; 4758 // hci_stack->bondable = 1; 4759 // hci_stack->own_addr_type = 0; 4760 4761 // buffer is free 4762 hci_stack->hci_packet_buffer_reserved = false; 4763 4764 // no pending cmds 4765 hci_stack->decline_reason = 0; 4766 4767 hci_stack->secure_connections_active = false; 4768 4769 #ifdef ENABLE_CLASSIC 4770 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4771 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4772 4773 hci_stack->gap_tasks_classic = 4774 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4775 GAP_TASK_SET_CLASS_OF_DEVICE | 4776 GAP_TASK_SET_LOCAL_NAME | 4777 GAP_TASK_SET_EIR_DATA | 4778 GAP_TASK_WRITE_SCAN_ENABLE | 4779 GAP_TASK_WRITE_PAGE_TIMEOUT; 4780 #endif 4781 4782 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4783 hci_stack->classic_read_local_oob_data = false; 4784 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4785 #endif 4786 4787 // LE 4788 #ifdef ENABLE_BLE 4789 memset(hci_stack->le_random_address, 0, 6); 4790 hci_stack->le_random_address_set = 0; 4791 #endif 4792 #ifdef ENABLE_LE_CENTRAL 4793 hci_stack->le_scanning_active = false; 4794 hci_stack->le_scanning_param_update = true; 4795 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4796 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4797 hci_stack->le_whitelist_capacity = 0; 4798 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4799 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4800 #endif 4801 #endif 4802 #ifdef ENABLE_LE_PERIPHERAL 4803 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4804 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4805 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4806 } 4807 if (hci_stack->le_advertisements_data != NULL){ 4808 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4809 } 4810 #endif 4811 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4812 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4813 #endif 4814 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4815 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4816 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4817 #endif 4818 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4819 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4820 #endif 4821 } 4822 4823 #ifdef ENABLE_CLASSIC 4824 /** 4825 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4826 */ 4827 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4828 // store and open remote device db 4829 hci_stack->link_key_db = link_key_db; 4830 if (hci_stack->link_key_db) { 4831 hci_stack->link_key_db->open(); 4832 } 4833 } 4834 #endif 4835 4836 void hci_init(const hci_transport_t *transport, const void *config){ 4837 4838 #ifdef HAVE_MALLOC 4839 if (!hci_stack) { 4840 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4841 } 4842 #else 4843 hci_stack = &hci_stack_static; 4844 #endif 4845 memset(hci_stack, 0, sizeof(hci_stack_t)); 4846 4847 // reference to use transport layer implementation 4848 hci_stack->hci_transport = transport; 4849 4850 // reference to used config 4851 hci_stack->config = config; 4852 4853 // setup pointer for outgoing packet buffer 4854 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4855 4856 // max acl payload size defined in config.h 4857 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4858 4859 // register packet handlers with transport 4860 transport->register_packet_handler(&packet_handler); 4861 4862 hci_stack->state = HCI_STATE_OFF; 4863 4864 // class of device 4865 hci_stack->class_of_device = 0x007a020c; // Smartphone 4866 4867 // bondable by default 4868 hci_stack->bondable = 1; 4869 4870 #ifdef ENABLE_CLASSIC 4871 // classic name 4872 hci_stack->local_name = default_classic_name; 4873 4874 // Master slave policy 4875 hci_stack->master_slave_policy = 1; 4876 4877 // Allow Role Switch 4878 hci_stack->allow_role_switch = 1; 4879 4880 // Default / minimum security level = 2 4881 hci_stack->gap_security_level = LEVEL_2; 4882 4883 // Default Security Mode 4 4884 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4885 4886 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4887 hci_stack->gap_required_encyrption_key_size = 7; 4888 4889 // Link Supervision Timeout 4890 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4891 4892 // All ACL packet types are enabledh 4893 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4894 #endif 4895 4896 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4897 hci_stack->ssp_enable = 1; 4898 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4899 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4900 hci_stack->ssp_auto_accept = 1; 4901 4902 // Secure Connections: enable (requires support from Controller) 4903 hci_stack->secure_connections_enable = true; 4904 4905 // voice setting - signed 16 bit pcm data with CVSD over the air 4906 hci_stack->sco_voice_setting = 0x60; 4907 4908 #ifdef ENABLE_BLE 4909 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4910 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4911 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4912 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4913 hci_stack->le_connection_latency = 4; // 4 4914 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4915 hci_stack->le_minimum_ce_length = 0; // 0 ms 4916 hci_stack->le_maximum_ce_length = 0; // 0 ms 4917 #endif 4918 4919 #ifdef ENABLE_LE_CENTRAL 4920 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4921 4922 // default LE Scanning 4923 hci_stack->le_scan_type = 0x01; // active 4924 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4925 hci_stack->le_scan_window = 0x30; // 30 ms 4926 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4927 #endif 4928 4929 #ifdef ENABLE_LE_PERIPHERAL 4930 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4931 4932 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4933 hci_stack->le_advertisements_interval_min = 0x0800; 4934 hci_stack->le_advertisements_interval_max = 0x0800; 4935 hci_stack->le_advertisements_type = 0; 4936 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4937 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4938 hci_stack->le_advertisements_channel_map = 0x07; 4939 hci_stack->le_advertisements_filter_policy = 0; 4940 #endif 4941 4942 // connection parameter range used to answer connection parameter update requests in l2cap 4943 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4944 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4945 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4946 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4947 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4948 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4949 4950 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4951 hci_stack->iso_packets_to_queue = 1; 4952 #endif 4953 4954 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4955 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4956 #endif 4957 4958 hci_state_reset(); 4959 } 4960 4961 void hci_deinit(void){ 4962 btstack_run_loop_remove_timer(&hci_stack->timeout); 4963 #ifdef HAVE_MALLOC 4964 if (hci_stack) { 4965 free(hci_stack); 4966 } 4967 #endif 4968 hci_stack = NULL; 4969 4970 #ifdef ENABLE_CLASSIC 4971 disable_l2cap_timeouts = 0; 4972 #endif 4973 } 4974 4975 /** 4976 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4977 */ 4978 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4979 hci_stack->chipset = chipset_driver; 4980 4981 // reset chipset driver - init is also called on power_up 4982 if (hci_stack->chipset && hci_stack->chipset->init){ 4983 hci_stack->chipset->init(hci_stack->config); 4984 } 4985 } 4986 4987 void hci_enable_custom_pre_init(void){ 4988 hci_stack->chipset_pre_init = true; 4989 } 4990 4991 /** 4992 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4993 */ 4994 void hci_set_control(const btstack_control_t *hardware_control){ 4995 // references to used control implementation 4996 hci_stack->control = hardware_control; 4997 // init with transport config 4998 hardware_control->init(hci_stack->config); 4999 } 5000 5001 static void hci_discard_connections(void){ 5002 btstack_linked_list_iterator_t it; 5003 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5004 while (btstack_linked_list_iterator_has_next(&it)){ 5005 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5006 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5007 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5008 hci_shutdown_connection(connection); 5009 } 5010 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5011 while (hci_stack->iso_streams != NULL){ 5012 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5013 } 5014 #endif 5015 } 5016 5017 void hci_close(void){ 5018 5019 #ifdef ENABLE_CLASSIC 5020 // close remote device db 5021 if (hci_stack->link_key_db) { 5022 hci_stack->link_key_db->close(); 5023 } 5024 #endif 5025 5026 hci_discard_connections(); 5027 5028 hci_power_control(HCI_POWER_OFF); 5029 5030 #ifdef HAVE_MALLOC 5031 free(hci_stack); 5032 #endif 5033 hci_stack = NULL; 5034 } 5035 5036 #ifdef HAVE_SCO_TRANSPORT 5037 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5038 hci_stack->sco_transport = sco_transport; 5039 sco_transport->register_packet_handler(&packet_handler); 5040 } 5041 #endif 5042 5043 #ifdef ENABLE_CLASSIC 5044 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5045 // validate ranage and set 5046 if (encryption_key_size < 7) return; 5047 if (encryption_key_size > 16) return; 5048 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5049 } 5050 5051 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5052 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5053 hci_stack->gap_security_mode = security_mode; 5054 return ERROR_CODE_SUCCESS; 5055 } else { 5056 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5057 } 5058 } 5059 5060 gap_security_mode_t gap_get_security_mode(void){ 5061 return hci_stack->gap_security_mode; 5062 } 5063 5064 void gap_set_security_level(gap_security_level_t security_level){ 5065 hci_stack->gap_security_level = security_level; 5066 } 5067 5068 gap_security_level_t gap_get_security_level(void){ 5069 if (hci_stack->gap_secure_connections_only_mode){ 5070 return LEVEL_4; 5071 } 5072 return hci_stack->gap_security_level; 5073 } 5074 5075 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5076 hci_stack->gap_minimal_service_security_level = security_level; 5077 } 5078 5079 void gap_set_secure_connections_only_mode(bool enable){ 5080 hci_stack->gap_secure_connections_only_mode = enable; 5081 } 5082 5083 bool gap_get_secure_connections_only_mode(void){ 5084 return hci_stack->gap_secure_connections_only_mode; 5085 } 5086 #endif 5087 5088 #ifdef ENABLE_CLASSIC 5089 void gap_set_class_of_device(uint32_t class_of_device){ 5090 hci_stack->class_of_device = class_of_device; 5091 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5092 hci_run(); 5093 } 5094 5095 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5096 hci_stack->default_link_policy_settings = default_link_policy_settings; 5097 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5098 hci_run(); 5099 } 5100 5101 void gap_set_allow_role_switch(bool allow_role_switch){ 5102 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5103 } 5104 5105 uint8_t hci_get_allow_role_switch(void){ 5106 return hci_stack->allow_role_switch; 5107 } 5108 5109 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5110 hci_stack->link_supervision_timeout = link_supervision_timeout; 5111 } 5112 5113 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5114 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5115 } 5116 5117 uint16_t hci_automatic_flush_timeout(void){ 5118 return hci_stack->automatic_flush_timeout; 5119 } 5120 5121 void hci_disable_l2cap_timeout_check(void){ 5122 disable_l2cap_timeouts = 1; 5123 } 5124 #endif 5125 5126 #ifndef HAVE_HOST_CONTROLLER_API 5127 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5128 void hci_set_bd_addr(bd_addr_t addr){ 5129 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5130 hci_stack->custom_bd_addr_set = 1; 5131 } 5132 #endif 5133 5134 // State-Module-Driver overview 5135 // state module low-level 5136 // HCI_STATE_OFF off close 5137 // HCI_STATE_INITIALIZING, on open 5138 // HCI_STATE_WORKING, on open 5139 // HCI_STATE_HALTING, on open 5140 // HCI_STATE_SLEEPING, off/sleep close 5141 // HCI_STATE_FALLING_ASLEEP on open 5142 5143 static int hci_power_control_on(void){ 5144 5145 // power on 5146 int err = 0; 5147 if (hci_stack->control && hci_stack->control->on){ 5148 err = (*hci_stack->control->on)(); 5149 } 5150 if (err){ 5151 log_error( "POWER_ON failed"); 5152 hci_emit_hci_open_failed(); 5153 return err; 5154 } 5155 5156 // int chipset driver 5157 if (hci_stack->chipset && hci_stack->chipset->init){ 5158 hci_stack->chipset->init(hci_stack->config); 5159 } 5160 5161 // init transport 5162 if (hci_stack->hci_transport->init){ 5163 hci_stack->hci_transport->init(hci_stack->config); 5164 } 5165 5166 // open transport 5167 err = hci_stack->hci_transport->open(); 5168 if (err){ 5169 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5170 if (hci_stack->control && hci_stack->control->off){ 5171 (*hci_stack->control->off)(); 5172 } 5173 hci_emit_hci_open_failed(); 5174 return err; 5175 } 5176 return 0; 5177 } 5178 5179 static void hci_power_control_off(void){ 5180 5181 log_info("hci_power_control_off"); 5182 5183 // close low-level device 5184 hci_stack->hci_transport->close(); 5185 5186 log_info("hci_power_control_off - hci_transport closed"); 5187 5188 // power off 5189 if (hci_stack->control && hci_stack->control->off){ 5190 (*hci_stack->control->off)(); 5191 } 5192 5193 log_info("hci_power_control_off - control closed"); 5194 5195 hci_stack->state = HCI_STATE_OFF; 5196 } 5197 5198 static void hci_power_control_sleep(void){ 5199 5200 log_info("hci_power_control_sleep"); 5201 5202 #if 0 5203 // don't close serial port during sleep 5204 5205 // close low-level device 5206 hci_stack->hci_transport->close(hci_stack->config); 5207 #endif 5208 5209 // sleep mode 5210 if (hci_stack->control && hci_stack->control->sleep){ 5211 (*hci_stack->control->sleep)(); 5212 } 5213 5214 hci_stack->state = HCI_STATE_SLEEPING; 5215 } 5216 5217 static int hci_power_control_wake(void){ 5218 5219 log_info("hci_power_control_wake"); 5220 5221 // wake on 5222 if (hci_stack->control && hci_stack->control->wake){ 5223 (*hci_stack->control->wake)(); 5224 } 5225 5226 #if 0 5227 // open low-level device 5228 int err = hci_stack->hci_transport->open(hci_stack->config); 5229 if (err){ 5230 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5231 if (hci_stack->control && hci_stack->control->off){ 5232 (*hci_stack->control->off)(); 5233 } 5234 hci_emit_hci_open_failed(); 5235 return err; 5236 } 5237 #endif 5238 5239 return 0; 5240 } 5241 5242 static void hci_power_enter_initializing_state(void){ 5243 // set up state machine 5244 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5245 hci_stack->hci_packet_buffer_reserved = false; 5246 hci_stack->state = HCI_STATE_INITIALIZING; 5247 5248 #ifndef HAVE_HOST_CONTROLLER_API 5249 if (hci_stack->chipset_pre_init) { 5250 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5251 } else 5252 #endif 5253 { 5254 hci_stack->substate = HCI_INIT_SEND_RESET; 5255 } 5256 } 5257 5258 static void hci_power_enter_halting_state(void){ 5259 #ifdef ENABLE_BLE 5260 // drop entries scheduled for removal, mark others for re-adding 5261 btstack_linked_list_iterator_t it; 5262 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5263 while (btstack_linked_list_iterator_has_next(&it)){ 5264 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5265 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5266 btstack_linked_list_iterator_remove(&it); 5267 btstack_memory_whitelist_entry_free(entry); 5268 } else { 5269 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5270 } 5271 } 5272 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5273 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5274 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5275 while (btstack_linked_list_iterator_has_next(&it)){ 5276 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5277 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5278 btstack_linked_list_iterator_remove(&it); 5279 btstack_memory_periodic_advertiser_list_entry_free(entry); 5280 } else { 5281 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5282 continue; 5283 } 5284 } 5285 #endif 5286 #endif 5287 // see hci_run 5288 hci_stack->state = HCI_STATE_HALTING; 5289 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5290 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5291 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5292 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5293 btstack_run_loop_add_timer(&hci_stack->timeout); 5294 } 5295 5296 // returns error 5297 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5298 int err; 5299 switch (power_mode){ 5300 case HCI_POWER_ON: 5301 err = hci_power_control_on(); 5302 if (err != 0) { 5303 log_error("hci_power_control_on() error %d", err); 5304 return err; 5305 } 5306 hci_power_enter_initializing_state(); 5307 break; 5308 case HCI_POWER_OFF: 5309 // do nothing 5310 break; 5311 case HCI_POWER_SLEEP: 5312 // do nothing (with SLEEP == OFF) 5313 break; 5314 default: 5315 btstack_assert(false); 5316 break; 5317 } 5318 return ERROR_CODE_SUCCESS; 5319 } 5320 5321 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5322 switch (power_mode){ 5323 case HCI_POWER_ON: 5324 // do nothing 5325 break; 5326 case HCI_POWER_OFF: 5327 // no connections yet, just turn it off 5328 hci_power_control_off(); 5329 break; 5330 case HCI_POWER_SLEEP: 5331 // no connections yet, just turn it off 5332 hci_power_control_sleep(); 5333 break; 5334 default: 5335 btstack_assert(false); 5336 break; 5337 } 5338 return ERROR_CODE_SUCCESS; 5339 } 5340 5341 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5342 switch (power_mode){ 5343 case HCI_POWER_ON: 5344 // do nothing 5345 break; 5346 case HCI_POWER_OFF: 5347 hci_power_enter_halting_state(); 5348 break; 5349 case HCI_POWER_SLEEP: 5350 // see hci_run 5351 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5352 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5353 break; 5354 default: 5355 btstack_assert(false); 5356 break; 5357 } 5358 return ERROR_CODE_SUCCESS; 5359 } 5360 5361 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5362 switch (power_mode){ 5363 case HCI_POWER_ON: 5364 hci_power_enter_initializing_state(); 5365 break; 5366 case HCI_POWER_OFF: 5367 // do nothing 5368 break; 5369 case HCI_POWER_SLEEP: 5370 // see hci_run 5371 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5372 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5373 break; 5374 default: 5375 btstack_assert(false); 5376 break; 5377 } 5378 return ERROR_CODE_SUCCESS; 5379 } 5380 5381 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5382 switch (power_mode){ 5383 case HCI_POWER_ON: 5384 hci_power_enter_initializing_state(); 5385 break; 5386 case HCI_POWER_OFF: 5387 hci_power_enter_halting_state(); 5388 break; 5389 case HCI_POWER_SLEEP: 5390 // do nothing 5391 break; 5392 default: 5393 btstack_assert(false); 5394 break; 5395 } 5396 return ERROR_CODE_SUCCESS; 5397 } 5398 5399 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5400 int err; 5401 switch (power_mode){ 5402 case HCI_POWER_ON: 5403 err = hci_power_control_wake(); 5404 if (err) return err; 5405 hci_power_enter_initializing_state(); 5406 break; 5407 case HCI_POWER_OFF: 5408 hci_power_enter_halting_state(); 5409 break; 5410 case HCI_POWER_SLEEP: 5411 // do nothing 5412 break; 5413 default: 5414 btstack_assert(false); 5415 break; 5416 } 5417 return ERROR_CODE_SUCCESS; 5418 } 5419 5420 int hci_power_control(HCI_POWER_MODE power_mode){ 5421 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5422 btstack_run_loop_remove_timer(&hci_stack->timeout); 5423 int err = 0; 5424 switch (hci_stack->state){ 5425 case HCI_STATE_OFF: 5426 err = hci_power_control_state_off(power_mode); 5427 break; 5428 case HCI_STATE_INITIALIZING: 5429 err = hci_power_control_state_initializing(power_mode); 5430 break; 5431 case HCI_STATE_WORKING: 5432 err = hci_power_control_state_working(power_mode); 5433 break; 5434 case HCI_STATE_HALTING: 5435 err = hci_power_control_state_halting(power_mode); 5436 break; 5437 case HCI_STATE_FALLING_ASLEEP: 5438 err = hci_power_control_state_falling_asleep(power_mode); 5439 break; 5440 case HCI_STATE_SLEEPING: 5441 err = hci_power_control_state_sleeping(power_mode); 5442 break; 5443 default: 5444 btstack_assert(false); 5445 break; 5446 } 5447 if (err != 0){ 5448 return err; 5449 } 5450 5451 // create internal event 5452 hci_emit_state(); 5453 5454 // trigger next/first action 5455 hci_run(); 5456 5457 return 0; 5458 } 5459 5460 5461 static void hci_halting_run(void) { 5462 5463 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5464 5465 hci_connection_t *connection; 5466 #ifdef ENABLE_BLE 5467 #ifdef ENABLE_LE_PERIPHERAL 5468 bool stop_advertismenets; 5469 #endif 5470 #endif 5471 5472 switch (hci_stack->substate) { 5473 case HCI_HALTING_CLASSIC_STOP: 5474 #ifdef ENABLE_CLASSIC 5475 if (!hci_can_send_command_packet_now()) return; 5476 5477 if (hci_stack->connectable || hci_stack->discoverable){ 5478 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5479 hci_send_cmd(&hci_write_scan_enable, 0); 5480 return; 5481 } 5482 #endif 5483 /* fall through */ 5484 5485 case HCI_HALTING_LE_ADV_STOP: 5486 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5487 5488 #ifdef ENABLE_BLE 5489 #ifdef ENABLE_LE_PERIPHERAL 5490 if (!hci_can_send_command_packet_now()) return; 5491 5492 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5493 5494 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5495 if (hci_extended_advertising_supported()){ 5496 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5497 btstack_linked_list_iterator_t it; 5498 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5499 // stop all periodic advertisements and check if an extended set is active 5500 while (btstack_linked_list_iterator_has_next(&it)){ 5501 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5502 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5503 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5504 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5505 return; 5506 } 5507 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5508 stop_advertismenets = true; 5509 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5510 } 5511 } 5512 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5513 if (stop_advertismenets){ 5514 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5515 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5516 return; 5517 } 5518 } else 5519 #else /* ENABLE_LE_PERIPHERAL */ 5520 { 5521 if (stop_advertismenets) { 5522 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5523 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5524 return; 5525 } 5526 } 5527 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5528 #endif /* ENABLE_LE_PERIPHERAL */ 5529 #endif /* ENABLE_BLE */ 5530 5531 /* fall through */ 5532 5533 case HCI_HALTING_LE_SCAN_STOP: 5534 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5535 if (!hci_can_send_command_packet_now()) return; 5536 5537 #ifdef ENABLE_BLE 5538 #ifdef ENABLE_LE_CENTRAL 5539 if (hci_stack->le_scanning_active){ 5540 hci_le_scan_stop(); 5541 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5542 return; 5543 } 5544 #endif 5545 #endif 5546 5547 /* fall through */ 5548 5549 case HCI_HALTING_DISCONNECT_ALL: 5550 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5551 if (!hci_can_send_command_packet_now()) return; 5552 5553 // close all open connections 5554 connection = (hci_connection_t *) hci_stack->connections; 5555 if (connection) { 5556 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5557 5558 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5559 5560 // check state 5561 switch(connection->state) { 5562 case SENT_DISCONNECT: 5563 case RECEIVED_DISCONNECTION_COMPLETE: 5564 // wait until connection is gone 5565 return; 5566 default: 5567 break; 5568 } 5569 5570 // finally, send the disconnect command 5571 connection->state = SENT_DISCONNECT; 5572 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5573 return; 5574 } 5575 5576 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5577 // stop BIGs and BIG Syncs 5578 if (hci_stack->le_audio_bigs != NULL){ 5579 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5580 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5581 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5582 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5583 return; 5584 } 5585 if (hci_stack->le_audio_big_syncs != NULL){ 5586 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5587 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5588 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5589 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5590 return; 5591 } 5592 #endif 5593 5594 btstack_run_loop_remove_timer(&hci_stack->timeout); 5595 5596 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5597 log_info("HCI_STATE_HALTING: wait 50 ms"); 5598 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5599 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5600 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5601 btstack_run_loop_add_timer(&hci_stack->timeout); 5602 break; 5603 5604 case HCI_HALTING_W4_CLOSE_TIMER: 5605 // keep waiting 5606 break; 5607 5608 case HCI_HALTING_CLOSE: 5609 // close left over connections (that had not been properly closed before) 5610 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5611 hci_discard_connections(); 5612 5613 log_info("HCI_STATE_HALTING, calling off"); 5614 5615 // switch mode 5616 hci_power_control_off(); 5617 5618 log_info("HCI_STATE_HALTING, emitting state"); 5619 hci_emit_state(); 5620 log_info("HCI_STATE_HALTING, done"); 5621 break; 5622 5623 default: 5624 break; 5625 } 5626 }; 5627 5628 static void hci_falling_asleep_run(void){ 5629 hci_connection_t * connection; 5630 switch(hci_stack->substate) { 5631 case HCI_FALLING_ASLEEP_DISCONNECT: 5632 log_info("HCI_STATE_FALLING_ASLEEP"); 5633 // close all open connections 5634 connection = (hci_connection_t *) hci_stack->connections; 5635 if (connection){ 5636 5637 // send disconnect 5638 if (!hci_can_send_command_packet_now()) return; 5639 5640 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5641 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5642 5643 // send disconnected event right away - causes higher layer connections to get closed, too. 5644 hci_shutdown_connection(connection); 5645 return; 5646 } 5647 5648 if (hci_classic_supported()){ 5649 // disable page and inquiry scan 5650 if (!hci_can_send_command_packet_now()) return; 5651 5652 log_info("HCI_STATE_HALTING, disabling inq scans"); 5653 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5654 5655 // continue in next sub state 5656 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5657 break; 5658 } 5659 5660 /* fall through */ 5661 5662 case HCI_FALLING_ASLEEP_COMPLETE: 5663 log_info("HCI_STATE_HALTING, calling sleep"); 5664 // switch mode 5665 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5666 hci_emit_state(); 5667 break; 5668 5669 default: 5670 break; 5671 } 5672 } 5673 5674 #ifdef ENABLE_CLASSIC 5675 5676 static void hci_update_scan_enable(void){ 5677 // 2 = page scan, 1 = inq scan 5678 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5679 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5680 hci_run(); 5681 } 5682 5683 void gap_discoverable_control(uint8_t enable){ 5684 if (enable) enable = 1; // normalize argument 5685 5686 if (hci_stack->discoverable == enable){ 5687 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5688 return; 5689 } 5690 5691 hci_stack->discoverable = enable; 5692 hci_update_scan_enable(); 5693 } 5694 5695 void gap_connectable_control(uint8_t enable){ 5696 if (enable) enable = 1; // normalize argument 5697 5698 // don't emit event 5699 if (hci_stack->connectable == enable) return; 5700 5701 hci_stack->connectable = enable; 5702 hci_update_scan_enable(); 5703 } 5704 #endif 5705 5706 void gap_local_bd_addr(bd_addr_t address_buffer){ 5707 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5708 } 5709 5710 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5711 static void hci_host_num_completed_packets(void){ 5712 5713 // create packet manually as arrays are not supported and num_commands should not get reduced 5714 hci_reserve_packet_buffer(); 5715 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5716 5717 uint16_t size = 0; 5718 uint16_t num_handles = 0; 5719 packet[size++] = 0x35; 5720 packet[size++] = 0x0c; 5721 size++; // skip param len 5722 size++; // skip num handles 5723 5724 // add { handle, packets } entries 5725 btstack_linked_item_t * it; 5726 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5727 hci_connection_t * connection = (hci_connection_t *) it; 5728 if (connection->num_packets_completed){ 5729 little_endian_store_16(packet, size, connection->con_handle); 5730 size += 2; 5731 little_endian_store_16(packet, size, connection->num_packets_completed); 5732 size += 2; 5733 // 5734 num_handles++; 5735 connection->num_packets_completed = 0; 5736 } 5737 } 5738 5739 packet[2] = size - 3; 5740 packet[3] = num_handles; 5741 5742 hci_stack->host_completed_packets = 0; 5743 5744 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5745 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5746 5747 // release packet buffer for synchronous transport implementations 5748 if (hci_transport_synchronous()){ 5749 hci_release_packet_buffer(); 5750 hci_emit_transport_packet_sent(); 5751 } 5752 } 5753 #endif 5754 5755 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5756 UNUSED(ds); 5757 hci_stack->substate = HCI_HALTING_CLOSE; 5758 hci_halting_run(); 5759 } 5760 5761 static bool hci_run_acl_fragments(void){ 5762 if (hci_stack->acl_fragmentation_total_size > 0u) { 5763 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5764 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5765 if (connection) { 5766 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5767 hci_send_acl_packet_fragments(connection); 5768 return true; 5769 } 5770 } else { 5771 // connection gone -> discard further fragments 5772 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5773 hci_stack->acl_fragmentation_total_size = 0; 5774 hci_stack->acl_fragmentation_pos = 0; 5775 } 5776 } 5777 return false; 5778 } 5779 5780 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5781 static bool hci_run_iso_fragments(void){ 5782 if (hci_stack->iso_fragmentation_total_size > 0u) { 5783 // TODO: flow control 5784 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5785 hci_send_iso_packet_fragments(); 5786 return true; 5787 } 5788 } 5789 return false; 5790 } 5791 #endif 5792 5793 #ifdef ENABLE_CLASSIC 5794 5795 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5796 static bool hci_classic_operation_active(void) { 5797 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5798 return true; 5799 } 5800 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5801 return true; 5802 } 5803 btstack_linked_item_t * it; 5804 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5805 hci_connection_t *connection = (hci_connection_t *) it; 5806 switch (connection->state) { 5807 case SENT_CREATE_CONNECTION: 5808 case SENT_CANCEL_CONNECTION: 5809 case SENT_DISCONNECT: 5810 return true; 5811 default: 5812 break; 5813 } 5814 } 5815 return false; 5816 } 5817 #endif 5818 5819 static bool hci_run_general_gap_classic(void){ 5820 5821 // assert stack is working and classic is active 5822 if (hci_classic_supported() == false) return false; 5823 if (hci_stack->state != HCI_STATE_WORKING) return false; 5824 5825 // decline incoming connections 5826 if (hci_stack->decline_reason){ 5827 uint8_t reason = hci_stack->decline_reason; 5828 hci_stack->decline_reason = 0; 5829 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5830 return true; 5831 } 5832 5833 if (hci_stack->gap_tasks_classic != 0){ 5834 hci_run_gap_tasks_classic(); 5835 return true; 5836 } 5837 5838 // start/stop inquiry 5839 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5840 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5841 if (hci_classic_operation_active() == false) 5842 #endif 5843 { 5844 uint8_t duration = hci_stack->inquiry_state; 5845 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5846 if (hci_stack->inquiry_max_period_length != 0){ 5847 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); 5848 } else { 5849 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5850 } 5851 return true; 5852 } 5853 } 5854 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5855 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5856 hci_send_cmd(&hci_inquiry_cancel); 5857 return true; 5858 } 5859 5860 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5861 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5862 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5863 return true; 5864 } 5865 5866 // remote name request 5867 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5868 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5869 if (hci_classic_operation_active() == false) 5870 #endif 5871 { 5872 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5873 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5874 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5875 return true; 5876 } 5877 } 5878 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5879 // Local OOB data 5880 if (hci_stack->classic_read_local_oob_data){ 5881 hci_stack->classic_read_local_oob_data = false; 5882 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5883 hci_send_cmd(&hci_read_local_extended_oob_data); 5884 } else { 5885 hci_send_cmd(&hci_read_local_oob_data); 5886 } 5887 } 5888 #endif 5889 // pairing 5890 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5891 uint8_t state = hci_stack->gap_pairing_state; 5892 uint8_t pin_code[PIN_CODE_LEN]; 5893 switch (state){ 5894 case GAP_PAIRING_STATE_SEND_PIN: 5895 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5896 memset(pin_code, 0, 16); 5897 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5898 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5899 break; 5900 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5901 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5902 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5903 break; 5904 case GAP_PAIRING_STATE_SEND_PASSKEY: 5905 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5906 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5907 break; 5908 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5909 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5910 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5911 break; 5912 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5913 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5914 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5915 break; 5916 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5917 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5918 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5919 break; 5920 default: 5921 break; 5922 } 5923 return true; 5924 } 5925 return false; 5926 } 5927 #endif 5928 5929 #ifdef ENABLE_BLE 5930 5931 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5932 static uint8_t hci_le_num_phys(uint8_t phys){ 5933 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5934 btstack_assert(phys); 5935 return num_bits_set[phys]; 5936 } 5937 #endif 5938 5939 #ifdef ENABLE_LE_CENTRAL 5940 static void hci_le_scan_stop(void){ 5941 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5942 if (hci_extended_advertising_supported()) { 5943 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5944 } else 5945 #endif 5946 { 5947 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5948 } 5949 } 5950 5951 static void 5952 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5953 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5954 if (hci_extended_advertising_supported()) { 5955 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5956 uint16_t le_connection_scan_interval[3]; 5957 uint16_t le_connection_scan_window[3]; 5958 uint16_t le_connection_interval_min[3]; 5959 uint16_t le_connection_interval_max[3]; 5960 uint16_t le_connection_latency[3]; 5961 uint16_t le_supervision_timeout[3]; 5962 uint16_t le_minimum_ce_length[3]; 5963 uint16_t le_maximum_ce_length[3]; 5964 5965 uint8_t i; 5966 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5967 for (i=0;i<num_phys;i++){ 5968 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5969 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5970 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5971 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5972 le_connection_latency[i] = hci_stack->le_connection_latency; 5973 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5974 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5975 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5976 } 5977 hci_send_cmd(&hci_le_extended_create_connection, 5978 initiator_filter_policy, 5979 hci_stack->le_connection_own_addr_type, // our addr type: 5980 address_type, // peer address type 5981 address, // peer bd addr 5982 hci_stack->le_connection_phys, // initiating PHY 5983 le_connection_scan_interval, // conn scan interval 5984 le_connection_scan_window, // conn scan windows 5985 le_connection_interval_min, // conn interval min 5986 le_connection_interval_max, // conn interval max 5987 le_connection_latency, // conn latency 5988 le_supervision_timeout, // conn latency 5989 le_minimum_ce_length, // min ce length 5990 le_maximum_ce_length // max ce length 5991 ); 5992 } else 5993 #endif 5994 { 5995 hci_send_cmd(&hci_le_create_connection, 5996 hci_stack->le_connection_scan_interval, // conn scan interval 5997 hci_stack->le_connection_scan_window, // conn scan windows 5998 initiator_filter_policy, // don't use whitelist 5999 address_type, // peer address type 6000 address, // peer bd addr 6001 hci_stack->le_connection_own_addr_type, // our addr type: 6002 hci_stack->le_connection_interval_min, // conn interval min 6003 hci_stack->le_connection_interval_max, // conn interval max 6004 hci_stack->le_connection_latency, // conn latency 6005 hci_stack->le_supervision_timeout, // conn latency 6006 hci_stack->le_minimum_ce_length, // min ce length 6007 hci_stack->le_maximum_ce_length // max ce length 6008 ); 6009 } 6010 } 6011 #endif 6012 6013 #ifdef ENABLE_LE_PERIPHERAL 6014 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6015 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6016 uint8_t operation = 0; 6017 if (pos == 0){ 6018 // first fragment or complete data 6019 operation |= 1; 6020 } 6021 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6022 // last fragment or complete data 6023 operation |= 2; 6024 } 6025 return operation; 6026 } 6027 #endif 6028 #endif 6029 6030 static bool hci_run_general_gap_le(void){ 6031 6032 btstack_linked_list_iterator_t lit; 6033 6034 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6035 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6036 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6037 hci_stack->le_resolvable_private_address_update_s = 0; 6038 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6039 return true; 6040 } 6041 #endif 6042 6043 // Phase 1: collect what to stop 6044 6045 #ifdef ENABLE_LE_CENTRAL 6046 bool scanning_stop = false; 6047 bool connecting_stop = false; 6048 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6049 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6050 bool periodic_sync_stop = false; 6051 #endif 6052 #endif 6053 #endif 6054 6055 #ifdef ENABLE_LE_PERIPHERAL 6056 bool advertising_stop = false; 6057 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6058 le_advertising_set_t * advertising_stop_set = NULL; 6059 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6060 bool periodic_advertising_stop = false; 6061 #endif 6062 #endif 6063 #endif 6064 6065 // check if own address changes 6066 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6067 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6068 6069 // check if whitelist needs modification 6070 bool whitelist_modification_pending = false; 6071 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6072 while (btstack_linked_list_iterator_has_next(&lit)){ 6073 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6074 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6075 whitelist_modification_pending = true; 6076 break; 6077 } 6078 } 6079 6080 // check if resolving list needs modification 6081 bool resolving_list_modification_pending = false; 6082 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6083 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6084 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6085 resolving_list_modification_pending = true; 6086 } 6087 #endif 6088 6089 #ifdef ENABLE_LE_CENTRAL 6090 6091 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6092 // check if periodic advertiser list needs modification 6093 bool periodic_list_modification_pending = false; 6094 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6095 while (btstack_linked_list_iterator_has_next(&lit)){ 6096 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6097 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6098 periodic_list_modification_pending = true; 6099 break; 6100 } 6101 } 6102 #endif 6103 6104 // scanning control 6105 if (hci_stack->le_scanning_active) { 6106 // stop if: 6107 // - parameter change required 6108 // - it's disabled 6109 // - whitelist change required but used for scanning 6110 // - resolving list modified 6111 // - own address changes 6112 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6113 if ((hci_stack->le_scanning_param_update) || 6114 !hci_stack->le_scanning_enabled || 6115 (scanning_uses_whitelist && whitelist_modification_pending) || 6116 resolving_list_modification_pending || 6117 random_address_change){ 6118 6119 scanning_stop = true; 6120 } 6121 } 6122 6123 // connecting control 6124 bool connecting_with_whitelist; 6125 switch (hci_stack->le_connecting_state){ 6126 case LE_CONNECTING_DIRECT: 6127 case LE_CONNECTING_WHITELIST: 6128 // stop connecting if: 6129 // - connecting uses white and whitelist modification pending 6130 // - if it got disabled 6131 // - resolving list modified 6132 // - own address changes 6133 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6134 if ((connecting_with_whitelist && whitelist_modification_pending) || 6135 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6136 resolving_list_modification_pending || 6137 random_address_change) { 6138 6139 connecting_stop = true; 6140 } 6141 break; 6142 default: 6143 break; 6144 } 6145 6146 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6147 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6148 // periodic sync control 6149 bool sync_with_advertiser_list; 6150 switch(hci_stack->le_periodic_sync_state){ 6151 case LE_CONNECTING_DIRECT: 6152 case LE_CONNECTING_WHITELIST: 6153 // stop sync if: 6154 // - sync with advertiser list and advertiser list modification pending 6155 // - if it got disabled 6156 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6157 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6158 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6159 periodic_sync_stop = true; 6160 } 6161 break; 6162 default: 6163 break; 6164 } 6165 #endif 6166 #endif 6167 6168 #endif /* ENABLE_LE_CENTRAL */ 6169 6170 #ifdef ENABLE_LE_PERIPHERAL 6171 // le advertisement control 6172 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6173 // stop if: 6174 // - parameter change required 6175 // - random address used in advertising and changes 6176 // - it's disabled 6177 // - whitelist change required but used for advertisement filter policy 6178 // - resolving list modified 6179 // - own address changes 6180 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6181 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6182 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6183 if (advertising_change || 6184 (advertising_uses_random_address && random_address_change) || 6185 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6186 (advertising_uses_whitelist && whitelist_modification_pending) || 6187 resolving_list_modification_pending || 6188 random_address_change) { 6189 6190 advertising_stop = true; 6191 } 6192 } 6193 6194 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6195 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6196 btstack_linked_list_iterator_t it; 6197 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6198 while (btstack_linked_list_iterator_has_next(&it)){ 6199 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6200 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6201 // stop if: 6202 // - parameter change required 6203 // - random address used in connectable advertising and changes 6204 // - it's disabled 6205 // - whitelist change required but used for advertisement filter policy 6206 // - resolving list modified 6207 // - own address changes 6208 // - advertisement set will be removed 6209 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6210 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6211 bool advertising_uses_random_address = 6212 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6213 advertising_connectable; 6214 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6215 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6216 bool advertising_set_random_address_change = 6217 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6218 bool advertising_set_will_be_removed = 6219 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6220 if (advertising_parameter_change || 6221 (advertising_uses_random_address && advertising_set_random_address_change) || 6222 (advertising_enabled == false) || 6223 (advertising_uses_whitelist && whitelist_modification_pending) || 6224 resolving_list_modification_pending || 6225 advertising_set_will_be_removed) { 6226 6227 advertising_stop = true; 6228 advertising_stop_set = advertising_set; 6229 break; 6230 } 6231 } 6232 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6233 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6234 // stop if: 6235 // - it's disabled 6236 // - parameter change required 6237 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6238 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6239 if ((periodic_enabled == false) || periodic_parameter_change){ 6240 periodic_advertising_stop = true; 6241 advertising_stop_set = advertising_set; 6242 } 6243 } 6244 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6245 } 6246 } 6247 #endif 6248 6249 #endif 6250 6251 6252 // Phase 2: stop everything that should be off during modifications 6253 6254 6255 // 2.1 Outgoing connection 6256 #ifdef ENABLE_LE_CENTRAL 6257 if (connecting_stop){ 6258 hci_send_cmd(&hci_le_create_connection_cancel); 6259 return true; 6260 } 6261 #endif 6262 6263 // 2.2 Scanning 6264 #ifdef ENABLE_LE_CENTRAL 6265 if (scanning_stop){ 6266 hci_stack->le_scanning_active = false; 6267 hci_le_scan_stop(); 6268 return true; 6269 } 6270 6271 // 2.3 Periodic Sync 6272 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6273 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6274 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6275 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6276 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6277 return true; 6278 } 6279 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6280 if (periodic_sync_stop){ 6281 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6282 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6283 return true; 6284 } 6285 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6286 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6287 #endif /* ENABLE_LE_CENTRAL */ 6288 6289 // 2.4 Advertising: legacy, extended, periodic 6290 #ifdef ENABLE_LE_PERIPHERAL 6291 if (advertising_stop){ 6292 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6293 if (hci_extended_advertising_supported()) { 6294 uint8_t advertising_stop_handle; 6295 if (advertising_stop_set != NULL){ 6296 advertising_stop_handle = advertising_stop_set->advertising_handle; 6297 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6298 } else { 6299 advertising_stop_handle = 0; 6300 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6301 } 6302 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6303 const uint16_t durations[] = { 0 }; 6304 const uint16_t max_events[] = { 0 }; 6305 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6306 } else 6307 #endif 6308 { 6309 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6310 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6311 } 6312 return true; 6313 } 6314 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6315 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6316 if (periodic_advertising_stop){ 6317 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6318 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6319 return true; 6320 } 6321 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6322 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6323 #endif /* ENABLE_LE_PERIPHERAL */ 6324 6325 6326 // Phase 3: modify 6327 6328 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6329 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6330 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6331 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6332 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6333 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6334 #endif 6335 return true; 6336 } 6337 6338 #ifdef ENABLE_LE_CENTRAL 6339 if (hci_stack->le_scanning_param_update){ 6340 hci_stack->le_scanning_param_update = false; 6341 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6342 if (hci_extended_advertising_supported()){ 6343 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6344 uint8_t scan_types[2]; 6345 uint16_t scan_intervals[2]; 6346 uint16_t scan_windows[2]; 6347 6348 uint8_t i; 6349 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6350 for (i=0;i<num_phys;i++){ 6351 scan_types[i] = hci_stack->le_scan_type; 6352 scan_intervals[i] = hci_stack->le_scan_interval; 6353 scan_windows[i] = hci_stack->le_scan_window; 6354 } 6355 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6356 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6357 } else 6358 #endif 6359 { 6360 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6361 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6362 } 6363 return true; 6364 } 6365 #endif 6366 6367 #ifdef ENABLE_LE_PERIPHERAL 6368 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6369 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6370 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6371 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6372 if (hci_extended_advertising_supported()){ 6373 // map advertisment type to advertising event properties 6374 uint16_t adv_event_properties = 0; 6375 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6376 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6377 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6378 } 6379 hci_stack->le_advertising_set_in_current_command = 0; 6380 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6381 0, 6382 adv_event_properties, 6383 hci_stack->le_advertisements_interval_min, 6384 hci_stack->le_advertisements_interval_max, 6385 hci_stack->le_advertisements_channel_map, 6386 hci_stack->le_advertisements_own_addr_type, 6387 hci_stack->le_advertisements_direct_address_type, 6388 hci_stack->le_advertisements_direct_address, 6389 hci_stack->le_advertisements_filter_policy, 6390 0x7f, // tx power: no preference 6391 0x01, // primary adv phy: LE 1M 6392 0, // secondary adv max skip 6393 0x01, // secondary adv phy 6394 0, // adv sid 6395 0 // scan request notification 6396 ); 6397 } else 6398 #endif 6399 { 6400 hci_send_cmd(&hci_le_set_advertising_parameters, 6401 hci_stack->le_advertisements_interval_min, 6402 hci_stack->le_advertisements_interval_max, 6403 hci_stack->le_advertisements_type, 6404 hci_stack->le_advertisements_own_addr_type, 6405 hci_stack->le_advertisements_direct_address_type, 6406 hci_stack->le_advertisements_direct_address, 6407 hci_stack->le_advertisements_channel_map, 6408 hci_stack->le_advertisements_filter_policy); 6409 } 6410 return true; 6411 } 6412 6413 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6414 // assumption: only set if extended advertising is supported 6415 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6416 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6417 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6418 return true; 6419 } 6420 #endif 6421 6422 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6423 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6424 uint8_t adv_data_clean[31]; 6425 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6426 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6427 hci_stack->le_advertisements_data_len); 6428 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6429 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6430 if (hci_extended_advertising_supported()){ 6431 hci_stack->le_advertising_set_in_current_command = 0; 6432 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6433 } else 6434 #endif 6435 { 6436 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6437 } 6438 return true; 6439 } 6440 6441 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6442 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6443 uint8_t scan_data_clean[31]; 6444 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6445 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6446 hci_stack->le_scan_response_data_len); 6447 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6448 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6449 if (hci_extended_advertising_supported()){ 6450 hci_stack->le_advertising_set_in_current_command = 0; 6451 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6452 } else 6453 #endif 6454 { 6455 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6456 } 6457 return true; 6458 } 6459 6460 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6461 if (hci_extended_advertising_supported()) { 6462 btstack_linked_list_iterator_t it; 6463 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6464 while (btstack_linked_list_iterator_has_next(&it)){ 6465 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6466 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6467 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6468 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6469 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6470 return true; 6471 } 6472 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6473 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6474 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6475 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6476 advertising_set->advertising_handle, 6477 advertising_set->extended_params.advertising_event_properties, 6478 advertising_set->extended_params.primary_advertising_interval_min, 6479 advertising_set->extended_params.primary_advertising_interval_max, 6480 advertising_set->extended_params.primary_advertising_channel_map, 6481 advertising_set->extended_params.own_address_type, 6482 advertising_set->extended_params.peer_address_type, 6483 advertising_set->extended_params.peer_address, 6484 advertising_set->extended_params.advertising_filter_policy, 6485 advertising_set->extended_params.advertising_tx_power, 6486 advertising_set->extended_params.primary_advertising_phy, 6487 advertising_set->extended_params.secondary_advertising_max_skip, 6488 advertising_set->extended_params.secondary_advertising_phy, 6489 advertising_set->extended_params.advertising_sid, 6490 advertising_set->extended_params.scan_request_notification_enable 6491 ); 6492 return true; 6493 } 6494 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6495 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6496 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6497 return true; 6498 } 6499 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6500 uint16_t pos = advertising_set->adv_data_pos; 6501 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6502 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6503 if ((operation & 0x02) != 0){ 6504 // last fragment or complete data 6505 operation |= 2; 6506 advertising_set->adv_data_pos = 0; 6507 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6508 } else { 6509 advertising_set->adv_data_pos += data_to_upload; 6510 } 6511 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6512 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6513 return true; 6514 } 6515 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6516 uint16_t pos = advertising_set->scan_data_pos; 6517 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6518 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6519 if ((operation & 0x02) != 0){ 6520 advertising_set->scan_data_pos = 0; 6521 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6522 } else { 6523 advertising_set->scan_data_pos += data_to_upload; 6524 } 6525 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6526 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6527 return true; 6528 } 6529 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6530 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6531 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6532 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6533 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6534 advertising_set->advertising_handle, 6535 advertising_set->periodic_params.periodic_advertising_interval_min, 6536 advertising_set->periodic_params.periodic_advertising_interval_max, 6537 advertising_set->periodic_params.periodic_advertising_properties); 6538 return true; 6539 } 6540 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6541 uint16_t pos = advertising_set->periodic_data_pos; 6542 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6543 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6544 if ((operation & 0x02) != 0){ 6545 // last fragment or complete data 6546 operation |= 2; 6547 advertising_set->periodic_data_pos = 0; 6548 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6549 } else { 6550 advertising_set->periodic_data_pos += data_to_upload; 6551 } 6552 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6553 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6554 return true; 6555 } 6556 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6557 } 6558 } 6559 #endif 6560 6561 #endif 6562 6563 #ifdef ENABLE_LE_CENTRAL 6564 // if connect with whitelist was active and is not cancelled yet, wait until next time 6565 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6566 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6567 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6568 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6569 #endif 6570 #endif 6571 6572 // LE Whitelist Management 6573 if (whitelist_modification_pending){ 6574 // add/remove entries 6575 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6576 while (btstack_linked_list_iterator_has_next(&lit)){ 6577 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6578 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6579 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6580 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6581 bd_addr_type_t address_type = entry->address_type; 6582 bd_addr_t address; 6583 memcpy(address, entry->address, 6); 6584 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6585 // remove from whitelist if not scheduled for re-addition 6586 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6587 btstack_memory_whitelist_entry_free(entry); 6588 } 6589 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6590 return true; 6591 } 6592 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6593 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6594 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6595 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6596 return true; 6597 } 6598 } 6599 } 6600 6601 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6602 // LE Resolving List Management 6603 if (resolving_list_modification_pending) { 6604 uint16_t i; 6605 switch (hci_stack->le_resolving_list_state) { 6606 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6607 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6608 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6609 return true; 6610 case LE_RESOLVING_LIST_READ_SIZE: 6611 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6612 hci_send_cmd(&hci_le_read_resolving_list_size); 6613 return true; 6614 case LE_RESOLVING_LIST_SEND_CLEAR: 6615 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6616 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6617 sizeof(hci_stack->le_resolving_list_add_entries)); 6618 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6619 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6620 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6621 sizeof(hci_stack->le_resolving_list_remove_entries)); 6622 hci_send_cmd(&hci_le_clear_resolving_list); 6623 return true; 6624 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6625 // first remove old entries 6626 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6627 uint8_t offset = i >> 3; 6628 uint8_t mask = 1 << (i & 7); 6629 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6630 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6631 bd_addr_t peer_identity_addreses; 6632 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6633 sm_key_t peer_irk; 6634 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6635 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6636 6637 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6638 // trigger whitelist entry 'update' (work around for controller bug) 6639 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6640 while (btstack_linked_list_iterator_has_next(&lit)) { 6641 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6642 if (entry->address_type != peer_identity_addr_type) continue; 6643 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6644 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6645 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6646 } 6647 #endif 6648 6649 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6650 peer_identity_addreses); 6651 return true; 6652 } 6653 6654 // then add new entries 6655 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6656 uint8_t offset = i >> 3; 6657 uint8_t mask = 1 << (i & 7); 6658 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6659 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6660 bd_addr_t peer_identity_addreses; 6661 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6662 sm_key_t peer_irk; 6663 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6664 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6665 if (btstack_is_null(peer_irk, 16)) continue; 6666 const uint8_t *local_irk = gap_get_persistent_irk(); 6667 // command uses format specifier 'P' that stores 16-byte value without flip 6668 uint8_t local_irk_flipped[16]; 6669 uint8_t peer_irk_flipped[16]; 6670 reverse_128(local_irk, local_irk_flipped); 6671 reverse_128(peer_irk, peer_irk_flipped); 6672 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6673 peer_irk_flipped, local_irk_flipped); 6674 return true; 6675 } 6676 6677 // finally, set privacy mode 6678 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6679 uint8_t offset = i >> 3; 6680 uint8_t mask = 1 << (i & 7); 6681 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6682 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6683 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6684 // Network Privacy Mode is default 6685 continue; 6686 } 6687 bd_addr_t peer_identity_address; 6688 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6689 sm_key_t peer_irk; 6690 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6691 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6692 if (btstack_is_null(peer_irk, 16)) continue; 6693 // command uses format specifier 'P' that stores 16-byte value without flip 6694 uint8_t peer_irk_flipped[16]; 6695 reverse_128(peer_irk, peer_irk_flipped); 6696 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6697 return true; 6698 } 6699 break; 6700 6701 default: 6702 break; 6703 } 6704 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6705 } 6706 #endif 6707 6708 #ifdef ENABLE_LE_CENTRAL 6709 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6710 // LE Whitelist Management 6711 if (periodic_list_modification_pending){ 6712 // add/remove entries 6713 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6714 while (btstack_linked_list_iterator_has_next(&lit)){ 6715 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6716 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6717 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6718 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6719 return true; 6720 } 6721 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6722 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6723 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6724 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6725 return true; 6726 } 6727 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6728 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6729 btstack_memory_periodic_advertiser_list_entry_free(entry); 6730 } 6731 } 6732 } 6733 #endif 6734 #endif 6735 6736 #ifdef ENABLE_LE_CENTRAL 6737 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6738 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6739 if (hci_stack->le_past_set_default_params){ 6740 hci_stack->le_past_set_default_params = false; 6741 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6742 hci_stack->le_past_mode, 6743 hci_stack->le_past_skip, 6744 hci_stack->le_past_sync_timeout, 6745 hci_stack->le_past_cte_type); 6746 return true; 6747 } 6748 #endif 6749 #endif 6750 #endif 6751 6752 // post-pone all actions until stack is fully working 6753 if (hci_stack->state != HCI_STATE_WORKING) return false; 6754 6755 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6756 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6757 6758 // Phase 4: restore state 6759 6760 #ifdef ENABLE_LE_CENTRAL 6761 // re-start scanning 6762 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6763 hci_stack->le_scanning_active = true; 6764 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6765 if (hci_extended_advertising_supported()){ 6766 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6767 } else 6768 #endif 6769 { 6770 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6771 } 6772 return true; 6773 } 6774 #endif 6775 6776 #ifdef ENABLE_LE_CENTRAL 6777 // re-start connecting 6778 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6779 bd_addr_t null_addr; 6780 memset(null_addr, 0, 6); 6781 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6782 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6783 hci_send_le_create_connection(1, 0, null_addr); 6784 return true; 6785 } 6786 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6787 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6788 switch(hci_stack->le_periodic_sync_request){ 6789 case LE_CONNECTING_DIRECT: 6790 case LE_CONNECTING_WHITELIST: 6791 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6792 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6793 hci_stack->le_periodic_sync_options, 6794 hci_stack->le_periodic_sync_advertising_sid, 6795 hci_stack->le_periodic_sync_advertiser_address_type, 6796 hci_stack->le_periodic_sync_advertiser_address, 6797 hci_stack->le_periodic_sync_skip, 6798 hci_stack->le_periodic_sync_timeout, 6799 hci_stack->le_periodic_sync_cte_type); 6800 return true; 6801 default: 6802 break; 6803 } 6804 } 6805 #endif 6806 #endif 6807 6808 #ifdef ENABLE_LE_PERIPHERAL 6809 // re-start advertising 6810 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6811 // check if advertisements should be enabled given 6812 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6813 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6814 6815 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6816 if (hci_extended_advertising_supported()){ 6817 const uint8_t advertising_handles[] = { 0 }; 6818 const uint16_t durations[] = { 0 }; 6819 const uint16_t max_events[] = { 0 }; 6820 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6821 } else 6822 #endif 6823 { 6824 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6825 } 6826 return true; 6827 } 6828 6829 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6830 if (hci_extended_advertising_supported()) { 6831 btstack_linked_list_iterator_t it; 6832 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6833 while (btstack_linked_list_iterator_has_next(&it)) { 6834 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6835 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6836 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6837 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6838 const uint16_t durations[] = { advertising_set->enable_timeout }; 6839 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6840 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6841 return true; 6842 } 6843 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6844 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6845 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6846 uint8_t enable = 1; 6847 if (advertising_set->periodic_include_adi){ 6848 enable |= 2; 6849 } 6850 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6851 return true; 6852 } 6853 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6854 } 6855 } 6856 #endif 6857 #endif 6858 6859 return false; 6860 } 6861 6862 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6863 static bool hci_run_iso_tasks(void){ 6864 btstack_linked_list_iterator_t it; 6865 6866 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6867 return false; 6868 } 6869 6870 // BIG 6871 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6872 while (btstack_linked_list_iterator_has_next(&it)){ 6873 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6874 switch (big->state){ 6875 case LE_AUDIO_BIG_STATE_CREATE: 6876 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6877 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6878 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6879 hci_send_cmd(&hci_le_create_big, 6880 big->params->big_handle, 6881 big->params->advertising_handle, 6882 big->params->num_bis, 6883 big->params->sdu_interval_us, 6884 big->params->max_sdu, 6885 big->params->max_transport_latency_ms, 6886 big->params->rtn, 6887 big->params->phy, 6888 big->params->packing, 6889 big->params->framing, 6890 big->params->encryption, 6891 big->params->broadcast_code); 6892 return true; 6893 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6894 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6895 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); 6896 return true; 6897 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6898 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6899 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6900 return true; 6901 case LE_AUDIO_BIG_STATE_TERMINATE: 6902 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6903 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6904 return true; 6905 default: 6906 break; 6907 } 6908 } 6909 6910 // BIG Sync 6911 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6912 while (btstack_linked_list_iterator_has_next(&it)){ 6913 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6914 switch (big_sync->state){ 6915 case LE_AUDIO_BIG_STATE_CREATE: 6916 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6917 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6918 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6919 hci_send_cmd(&hci_le_big_create_sync, 6920 big_sync->params->big_handle, 6921 big_sync->params->sync_handle, 6922 big_sync->params->encryption, 6923 big_sync->params->broadcast_code, 6924 big_sync->params->mse, 6925 big_sync->params->big_sync_timeout_10ms, 6926 big_sync->params->num_bis, 6927 big_sync->params->bis_indices); 6928 return true; 6929 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6930 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6931 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); 6932 return true; 6933 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6934 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6935 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6936 return true; 6937 case LE_AUDIO_BIG_STATE_TERMINATE: 6938 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6939 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6940 return true; 6941 default: 6942 break; 6943 } 6944 } 6945 6946 // CIG 6947 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6948 while (btstack_linked_list_iterator_has_next(&it)) { 6949 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6950 uint8_t i; 6951 // Set CIG Parameters 6952 uint8_t cis_id[MAX_NR_CIS]; 6953 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6954 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6955 uint8_t phy_c_to_p[MAX_NR_CIS]; 6956 uint8_t phy_p_to_c[MAX_NR_CIS]; 6957 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6958 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6959 switch (cig->state) { 6960 case LE_AUDIO_CIG_STATE_CREATE: 6961 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6962 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6963 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6964 le_audio_cig_params_t * params = cig->params; 6965 for (i = 0; i < params->num_cis; i++) { 6966 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6967 cis_id[i] = cis_params->cis_id; 6968 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6969 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6970 phy_c_to_p[i] = cis_params->phy_c_to_p; 6971 phy_p_to_c[i] = cis_params->phy_p_to_c; 6972 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6973 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6974 } 6975 hci_send_cmd(&hci_le_set_cig_parameters, 6976 cig->cig_id, 6977 params->sdu_interval_c_to_p, 6978 params->sdu_interval_p_to_c, 6979 params->worst_case_sca, 6980 params->packing, 6981 params->framing, 6982 params->max_transport_latency_c_to_p, 6983 params->max_transport_latency_p_to_c, 6984 params->num_cis, 6985 cis_id, 6986 max_sdu_c_to_p, 6987 max_sdu_p_to_c, 6988 phy_c_to_p, 6989 phy_p_to_c, 6990 rtn_c_to_p, 6991 rtn_p_to_c 6992 ); 6993 return true; 6994 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6995 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6996 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6997 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6998 for (i=0;i<cig->num_cis;i++){ 6999 cig->cis_setup_active[i] = true; 7000 } 7001 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7002 return true; 7003 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7004 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7005 // find next path to setup 7006 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7007 if (cig->cis_established[cis_index] == false) { 7008 continue; 7009 } 7010 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7011 bool setup = true; 7012 if (cis_direction == 0){ 7013 // 0 - input - host to controller 7014 // we are central => central to peripheral 7015 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7016 } else { 7017 // 1 - output - controller to host 7018 // we are central => peripheral to central 7019 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7020 } 7021 if (setup){ 7022 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7023 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7024 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7025 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); 7026 return true; 7027 } 7028 cig->state_vars.next_cis++; 7029 } 7030 // emit done 7031 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7032 default: 7033 break; 7034 } 7035 } 7036 7037 // CIS Accept/Reject 7038 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7039 while (btstack_linked_list_iterator_has_next(&it)) { 7040 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7041 hci_con_handle_t con_handle; 7042 switch (iso_stream->state){ 7043 case HCI_ISO_STREAM_W2_ACCEPT: 7044 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7045 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7046 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7047 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7048 return true; 7049 case HCI_ISO_STREAM_W2_REJECT: 7050 con_handle = iso_stream->cis_handle; 7051 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7052 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7053 hci_iso_stream_finalize(iso_stream); 7054 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7055 return true; 7056 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7057 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7058 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7059 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7060 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); 7061 break; 7062 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7063 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7064 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7065 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7066 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); 7067 break; 7068 default: 7069 break; 7070 } 7071 } 7072 7073 return false; 7074 } 7075 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7076 #endif 7077 7078 static bool hci_run_general_pending_commands(void){ 7079 btstack_linked_item_t * it; 7080 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7081 hci_connection_t * connection = (hci_connection_t *) it; 7082 7083 switch(connection->state){ 7084 case SEND_CREATE_CONNECTION: 7085 switch(connection->address_type){ 7086 #ifdef ENABLE_CLASSIC 7087 case BD_ADDR_TYPE_ACL: 7088 log_info("sending hci_create_connection"); 7089 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7090 break; 7091 #endif 7092 default: 7093 #ifdef ENABLE_BLE 7094 #ifdef ENABLE_LE_CENTRAL 7095 log_info("sending hci_le_create_connection"); 7096 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7097 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7098 hci_send_le_create_connection(0, connection->address_type, connection->address); 7099 connection->state = SENT_CREATE_CONNECTION; 7100 #endif 7101 #endif 7102 break; 7103 } 7104 return true; 7105 7106 #ifdef ENABLE_CLASSIC 7107 case RECEIVED_CONNECTION_REQUEST: 7108 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7109 log_info("sending hci_accept_connection_request"); 7110 connection->state = ACCEPTED_CONNECTION_REQUEST; 7111 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7112 return true; 7113 } 7114 break; 7115 #endif 7116 case SEND_DISCONNECT: 7117 connection->state = SENT_DISCONNECT; 7118 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7119 return true; 7120 7121 default: 7122 break; 7123 } 7124 7125 // no further commands if connection is about to get shut down 7126 if (connection->state == SENT_DISCONNECT) continue; 7127 7128 #ifdef ENABLE_CLASSIC 7129 7130 // Handling link key request requires remote supported features 7131 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7132 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7133 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7134 7135 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7136 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7137 if (have_link_key && security_level_sufficient){ 7138 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7139 } else { 7140 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7141 } 7142 return true; 7143 } 7144 7145 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7146 log_info("denying to pin request"); 7147 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7148 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7149 return true; 7150 } 7151 7152 // security assessment requires remote features 7153 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7154 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7155 hci_ssp_assess_security_on_io_cap_request(connection); 7156 // 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 7157 } 7158 7159 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7160 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7161 // set authentication requirements: 7162 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7163 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7164 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7165 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7166 authreq |= 1; 7167 } 7168 bool bonding = hci_stack->bondable; 7169 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7170 // if we have received IO Cap Response, we're in responder role 7171 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7172 if (bonding && !remote_bonding){ 7173 log_info("Remote not bonding, dropping local flag"); 7174 bonding = false; 7175 } 7176 } 7177 if (bonding){ 7178 if (connection->bonding_flags & BONDING_DEDICATED){ 7179 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7180 } else { 7181 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7182 } 7183 } 7184 uint8_t have_oob_data = 0; 7185 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7186 if (connection->classic_oob_c_192 != NULL){ 7187 have_oob_data |= 1; 7188 } 7189 if (connection->classic_oob_c_256 != NULL){ 7190 have_oob_data |= 2; 7191 } 7192 #endif 7193 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7194 return true; 7195 } 7196 7197 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7198 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7199 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7200 return true; 7201 } 7202 7203 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7204 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7205 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7206 const uint8_t zero[16] = { 0 }; 7207 const uint8_t * r_192 = zero; 7208 const uint8_t * c_192 = zero; 7209 const uint8_t * r_256 = zero; 7210 const uint8_t * c_256 = zero; 7211 // verify P-256 OOB 7212 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7213 c_256 = connection->classic_oob_c_256; 7214 if (connection->classic_oob_r_256 != NULL) { 7215 r_256 = connection->classic_oob_r_256; 7216 } 7217 } 7218 // verify P-192 OOB 7219 if ((connection->classic_oob_c_192 != NULL)) { 7220 c_192 = connection->classic_oob_c_192; 7221 if (connection->classic_oob_r_192 != NULL) { 7222 r_192 = connection->classic_oob_r_192; 7223 } 7224 } 7225 7226 // assess security 7227 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7228 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7229 if (need_level_4 && !can_reach_level_4){ 7230 log_info("Level 4 required, but not possible -> abort"); 7231 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7232 // send oob negative reply 7233 c_256 = NULL; 7234 c_192 = NULL; 7235 } 7236 7237 // Reply 7238 if (c_256 != zero) { 7239 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7240 } else if (c_192 != zero){ 7241 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7242 } else { 7243 hci_stack->classic_oob_con_handle = connection->con_handle; 7244 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7245 } 7246 return true; 7247 } 7248 #endif 7249 7250 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7251 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7252 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7253 return true; 7254 } 7255 7256 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7257 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7258 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7259 return true; 7260 } 7261 7262 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7263 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7264 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7265 return true; 7266 } 7267 7268 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7269 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7270 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7271 connection->state = SENT_DISCONNECT; 7272 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7273 return true; 7274 } 7275 7276 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7277 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7278 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7279 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7280 return true; 7281 } 7282 7283 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7284 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7285 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7286 return true; 7287 } 7288 7289 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7290 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7291 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7292 return true; 7293 } 7294 7295 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7296 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7297 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7298 return true; 7299 } 7300 7301 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7302 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7303 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7304 return true; 7305 } 7306 7307 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7308 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7309 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7310 return true; 7311 } 7312 #endif 7313 7314 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7315 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7316 #ifdef ENABLE_CLASSIC 7317 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7318 #endif 7319 if (connection->state != SENT_DISCONNECT){ 7320 connection->state = SENT_DISCONNECT; 7321 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7322 return true; 7323 } 7324 } 7325 7326 #ifdef ENABLE_CLASSIC 7327 uint16_t sniff_min_interval; 7328 switch (connection->sniff_min_interval){ 7329 case 0: 7330 break; 7331 case 0xffff: 7332 connection->sniff_min_interval = 0; 7333 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7334 return true; 7335 default: 7336 sniff_min_interval = connection->sniff_min_interval; 7337 connection->sniff_min_interval = 0; 7338 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7339 return true; 7340 } 7341 7342 if (connection->sniff_subrating_max_latency != 0xffff){ 7343 uint16_t max_latency = connection->sniff_subrating_max_latency; 7344 connection->sniff_subrating_max_latency = 0; 7345 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7346 return true; 7347 } 7348 7349 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7350 uint8_t service_type = (uint8_t) connection->qos_service_type; 7351 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7352 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); 7353 return true; 7354 } 7355 7356 if (connection->request_role != HCI_ROLE_INVALID){ 7357 hci_role_t role = connection->request_role; 7358 connection->request_role = HCI_ROLE_INVALID; 7359 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7360 return true; 7361 } 7362 #endif 7363 7364 if (connection->gap_connection_tasks != 0){ 7365 #ifdef ENABLE_CLASSIC 7366 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7367 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7368 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7369 return true; 7370 } 7371 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7372 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7373 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7374 return true; 7375 } 7376 #endif 7377 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7378 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7379 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7380 return true; 7381 } 7382 #ifdef ENABLE_BLE 7383 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7384 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7385 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7386 return true; 7387 } 7388 #endif 7389 } 7390 7391 #ifdef ENABLE_BLE 7392 switch (connection->le_con_parameter_update_state){ 7393 // response to L2CAP CON PARAMETER UPDATE REQUEST 7394 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7395 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7396 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7397 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7398 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7399 return true; 7400 case CON_PARAMETER_UPDATE_REPLY: 7401 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7402 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7403 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7404 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7405 return true; 7406 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7407 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7408 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7409 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7410 return true; 7411 default: 7412 break; 7413 } 7414 if (connection->le_phy_update_all_phys != 0xffu){ 7415 uint8_t all_phys = connection->le_phy_update_all_phys; 7416 connection->le_phy_update_all_phys = 0xff; 7417 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); 7418 return true; 7419 } 7420 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7421 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7422 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7423 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7424 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7425 return true; 7426 } 7427 if (connection->le_past_advertising_handle != 0xff){ 7428 uint8_t advertising_handle = connection->le_past_advertising_handle; 7429 connection->le_past_advertising_handle = 0xff; 7430 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7431 return true; 7432 } 7433 #endif 7434 #endif 7435 } 7436 return false; 7437 } 7438 7439 static void hci_run(void){ 7440 7441 // stack state sub statemachines 7442 switch (hci_stack->state) { 7443 case HCI_STATE_INITIALIZING: 7444 hci_initializing_run(); 7445 break; 7446 case HCI_STATE_HALTING: 7447 hci_halting_run(); 7448 break; 7449 case HCI_STATE_FALLING_ASLEEP: 7450 hci_falling_asleep_run(); 7451 break; 7452 default: 7453 break; 7454 } 7455 7456 // allow to run after initialization to working transition 7457 if (hci_stack->state != HCI_STATE_WORKING){ 7458 return; 7459 } 7460 7461 bool done; 7462 7463 // send continuation fragments first, as they block the prepared packet buffer 7464 done = hci_run_acl_fragments(); 7465 if (done) return; 7466 7467 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7468 done = hci_run_iso_fragments(); 7469 if (done) return; 7470 #endif 7471 7472 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7473 // send host num completed packets next as they don't require num_cmd_packets > 0 7474 if (!hci_can_send_comand_packet_transport()) return; 7475 if (hci_stack->host_completed_packets){ 7476 hci_host_num_completed_packets(); 7477 return; 7478 } 7479 #endif 7480 7481 if (!hci_can_send_command_packet_now()) return; 7482 7483 // global/non-connection oriented commands 7484 7485 7486 #ifdef ENABLE_CLASSIC 7487 // general gap classic 7488 done = hci_run_general_gap_classic(); 7489 if (done) return; 7490 #endif 7491 7492 #ifdef ENABLE_BLE 7493 // general gap le 7494 done = hci_run_general_gap_le(); 7495 if (done) return; 7496 7497 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7498 // ISO related tasks, e.g. BIG create/terminate/sync 7499 done = hci_run_iso_tasks(); 7500 if (done) return; 7501 #endif 7502 #endif 7503 7504 // send pending HCI commands 7505 hci_run_general_pending_commands(); 7506 } 7507 7508 #ifdef ENABLE_CLASSIC 7509 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7510 // bits 6-9 are 'don't use' 7511 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7512 7513 // restrict packet types to local and remote supported 7514 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7515 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7516 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7517 } 7518 #endif 7519 7520 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7521 // house-keeping 7522 7523 #ifdef ENABLE_CLASSIC 7524 bd_addr_t addr; 7525 hci_connection_t * conn; 7526 #endif 7527 #ifdef ENABLE_LE_CENTRAL 7528 uint8_t initiator_filter_policy; 7529 #endif 7530 7531 uint16_t opcode = little_endian_read_16(packet, 0); 7532 switch (opcode) { 7533 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7534 hci_stack->loopback_mode = packet[3]; 7535 break; 7536 7537 #ifdef ENABLE_CLASSIC 7538 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7539 reverse_bd_addr(&packet[3], addr); 7540 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7541 7542 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7543 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7544 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7545 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7546 } 7547 7548 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7549 if (!conn) { 7550 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7551 if (!conn) { 7552 // notify client that alloc failed 7553 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7554 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7555 } 7556 conn->state = SEND_CREATE_CONNECTION; 7557 } 7558 7559 log_info("conn state %u", conn->state); 7560 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7561 switch (conn->state) { 7562 // if connection active exists 7563 case OPEN: 7564 // and OPEN, emit connection complete command 7565 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7566 // packet not sent to controller 7567 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7568 case RECEIVED_DISCONNECTION_COMPLETE: 7569 // create connection triggered in disconnect complete event, let's do it now 7570 break; 7571 case SEND_CREATE_CONNECTION: 7572 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7573 if (hci_classic_operation_active()){ 7574 return ERROR_CODE_SUCCESS; 7575 } 7576 #endif 7577 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7578 break; 7579 default: 7580 // otherwise, just ignore as it is already in the open process 7581 // packet not sent to controller 7582 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7583 } 7584 conn->state = SENT_CREATE_CONNECTION; 7585 7586 // track outgoing connection 7587 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7588 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7589 break; 7590 7591 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7592 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7593 if (conn == NULL) { 7594 // neither SCO nor ACL connection for con handle 7595 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7596 } else { 7597 uint16_t remote_supported_sco_packets; 7598 switch (conn->address_type){ 7599 case BD_ADDR_TYPE_ACL: 7600 // assert SCO connection does not exit 7601 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7602 return ERROR_CODE_COMMAND_DISALLOWED; 7603 } 7604 // cache remote sco packet types 7605 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7606 7607 // allocate connection struct 7608 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7609 HCI_ROLE_MASTER); 7610 if (!conn) { 7611 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7612 } 7613 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7614 break; 7615 case BD_ADDR_TYPE_SCO: 7616 // update of existing SCO connection 7617 break; 7618 default: 7619 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7620 } 7621 } 7622 7623 // conn refers to hci connection of type sco now 7624 7625 conn->state = SENT_CREATE_CONNECTION; 7626 7627 // track outgoing connection to handle command status with error 7628 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7629 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7630 7631 // setup_synchronous_connection? Voice setting at offset 22 7632 // TODO: compare to current setting if sco connection already active 7633 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7634 7635 // derive sco payload length from packet types 7636 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7637 break; 7638 7639 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7640 // get SCO connection 7641 reverse_bd_addr(&packet[3], addr); 7642 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7643 if (conn == NULL){ 7644 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7645 } 7646 7647 conn->state = ACCEPTED_CONNECTION_REQUEST; 7648 7649 // track outgoing connection to handle command status with error 7650 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7651 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7652 7653 // accept_synchronous_connection? Voice setting at offset 18 7654 // TODO: compare to current setting if sco connection already active 7655 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7656 7657 // derive sco payload length from packet types 7658 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7659 break; 7660 #endif 7661 7662 #ifdef ENABLE_BLE 7663 #ifdef ENABLE_LE_CENTRAL 7664 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7665 // white list used? 7666 initiator_filter_policy = packet[7]; 7667 switch (initiator_filter_policy) { 7668 case 0: 7669 // whitelist not used 7670 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7671 break; 7672 case 1: 7673 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7674 break; 7675 default: 7676 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7677 break; 7678 } 7679 // track outgoing connection 7680 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7681 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7682 break; 7683 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7684 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7685 // white list used? 7686 initiator_filter_policy = packet[3]; 7687 switch (initiator_filter_policy) { 7688 case 0: 7689 // whitelist not used 7690 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7691 break; 7692 case 1: 7693 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7694 break; 7695 default: 7696 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7697 break; 7698 } 7699 // track outgoing connection 7700 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7701 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7702 break; 7703 #endif 7704 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7705 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7706 break; 7707 #endif 7708 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7709 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7710 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7711 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7712 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7713 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7714 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7715 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7716 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7717 case HCI_OPCODE_HCI_LE_READ_PHY: 7718 case HCI_OPCODE_HCI_LE_SET_PHY: 7719 // conection handle is first command parameter 7720 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7721 break; 7722 #endif 7723 #endif /* ENABLE_BLE */ 7724 default: 7725 break; 7726 } 7727 7728 hci_stack->num_cmd_packets--; 7729 7730 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7731 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7732 if (err != 0){ 7733 return ERROR_CODE_HARDWARE_FAILURE; 7734 } 7735 return ERROR_CODE_SUCCESS; 7736 } 7737 7738 // disconnect because of security block 7739 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7740 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7741 if (!connection) return; 7742 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7743 } 7744 7745 7746 // Configure Secure Simple Pairing 7747 7748 #ifdef ENABLE_CLASSIC 7749 7750 // enable will enable SSP during init 7751 void gap_ssp_set_enable(int enable){ 7752 hci_stack->ssp_enable = enable; 7753 } 7754 7755 static int hci_local_ssp_activated(void){ 7756 return gap_ssp_supported() && hci_stack->ssp_enable; 7757 } 7758 7759 // if set, BTstack will respond to io capability request using authentication requirement 7760 void gap_ssp_set_io_capability(int io_capability){ 7761 hci_stack->ssp_io_capability = io_capability; 7762 } 7763 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7764 hci_stack->ssp_authentication_requirement = authentication_requirement; 7765 } 7766 7767 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7768 void gap_ssp_set_auto_accept(int auto_accept){ 7769 hci_stack->ssp_auto_accept = auto_accept; 7770 } 7771 7772 void gap_secure_connections_enable(bool enable){ 7773 hci_stack->secure_connections_enable = enable; 7774 } 7775 bool gap_secure_connections_active(void){ 7776 return hci_stack->secure_connections_active; 7777 } 7778 7779 #endif 7780 7781 // va_list part of hci_send_cmd 7782 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7783 if (!hci_can_send_command_packet_now()){ 7784 log_error("hci_send_cmd called but cannot send packet now"); 7785 return ERROR_CODE_COMMAND_DISALLOWED; 7786 } 7787 7788 // for HCI INITIALIZATION 7789 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7790 hci_stack->last_cmd_opcode = cmd->opcode; 7791 7792 hci_reserve_packet_buffer(); 7793 uint8_t * packet = hci_stack->hci_packet_buffer; 7794 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7795 uint8_t status = hci_send_cmd_packet(packet, size); 7796 7797 // release packet buffer on error or for synchronous transport implementations 7798 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7799 hci_release_packet_buffer(); 7800 hci_emit_transport_packet_sent(); 7801 } 7802 7803 return status; 7804 } 7805 7806 /** 7807 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7808 */ 7809 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7810 va_list argptr; 7811 va_start(argptr, cmd); 7812 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7813 va_end(argptr); 7814 return status; 7815 } 7816 7817 // Create various non-HCI events. 7818 // TODO: generalize, use table similar to hci_create_command 7819 7820 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7821 // dump packet 7822 if (dump) { 7823 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7824 } 7825 7826 // dispatch to all event handlers 7827 btstack_linked_list_iterator_t it; 7828 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7829 while (btstack_linked_list_iterator_has_next(&it)){ 7830 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7831 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7832 } 7833 } 7834 7835 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7836 if (!hci_stack->acl_packet_handler) return; 7837 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7838 } 7839 7840 #ifdef ENABLE_CLASSIC 7841 static void hci_notify_if_sco_can_send_now(void){ 7842 // notify SCO sender if waiting 7843 if (!hci_stack->sco_waiting_for_can_send_now) return; 7844 if (hci_can_send_sco_packet_now()){ 7845 hci_stack->sco_waiting_for_can_send_now = 0; 7846 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7847 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7848 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7849 } 7850 } 7851 7852 // parsing end emitting has been merged to reduce code size 7853 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7854 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7855 7856 uint8_t * eir_data; 7857 ad_context_t context; 7858 const uint8_t * name; 7859 uint8_t name_len; 7860 7861 if (size < 3) return; 7862 7863 int event_type = hci_event_packet_get_type(packet); 7864 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7865 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7866 7867 switch (event_type){ 7868 case HCI_EVENT_INQUIRY_RESULT: 7869 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7870 if (size != (3 + (num_responses * 14))) return; 7871 break; 7872 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7873 if (size != 257) return; 7874 if (num_responses != 1) return; 7875 break; 7876 default: 7877 return; 7878 } 7879 7880 // event[1] is set at the end 7881 int i; 7882 for (i=0; i<num_responses;i++){ 7883 memset(event, 0, sizeof(event)); 7884 event[0] = GAP_EVENT_INQUIRY_RESULT; 7885 uint8_t event_size = 27; // if name is not set by EIR 7886 7887 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7888 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7889 (void)memcpy(&event[9], 7890 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7891 3); // class of device 7892 (void)memcpy(&event[12], 7893 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7894 2); // clock offset 7895 7896 switch (event_type){ 7897 case HCI_EVENT_INQUIRY_RESULT: 7898 // 14,15,16,17 = 0, size 18 7899 break; 7900 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7901 event[14] = 1; 7902 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7903 // 16,17 = 0, size 18 7904 break; 7905 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7906 event[14] = 1; 7907 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7908 // EIR packets only contain a single inquiry response 7909 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7910 name = NULL; 7911 // Iterate over EIR data 7912 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7913 uint8_t data_type = ad_iterator_get_data_type(&context); 7914 uint8_t data_size = ad_iterator_get_data_len(&context); 7915 const uint8_t * data = ad_iterator_get_data(&context); 7916 // Prefer Complete Local Name over Shortened Local Name 7917 switch (data_type){ 7918 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7919 if (name) continue; 7920 /* fall through */ 7921 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7922 name = data; 7923 name_len = data_size; 7924 break; 7925 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7926 if (data_size != 8) break; 7927 event[16] = 1; 7928 memcpy(&event[17], data, 8); 7929 break; 7930 default: 7931 break; 7932 } 7933 } 7934 if (name){ 7935 event[25] = 1; 7936 // truncate name if needed 7937 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7938 event[26] = len; 7939 (void)memcpy(&event[27], name, len); 7940 event_size += len; 7941 } 7942 break; 7943 default: 7944 return; 7945 } 7946 event[1] = event_size - 2; 7947 hci_emit_event(event, event_size, 1); 7948 } 7949 } 7950 #endif 7951 7952 void hci_emit_state(void){ 7953 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7954 uint8_t event[3]; 7955 event[0] = BTSTACK_EVENT_STATE; 7956 event[1] = sizeof(event) - 2u; 7957 event[2] = hci_stack->state; 7958 hci_emit_event(event, sizeof(event), 1); 7959 } 7960 7961 #ifdef ENABLE_CLASSIC 7962 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7963 uint8_t event[13]; 7964 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7965 event[1] = sizeof(event) - 2; 7966 event[2] = status; 7967 little_endian_store_16(event, 3, con_handle); 7968 reverse_bd_addr(address, &event[5]); 7969 event[11] = 1; // ACL connection 7970 event[12] = 0; // encryption disabled 7971 hci_emit_event(event, sizeof(event), 1); 7972 } 7973 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7974 if (disable_l2cap_timeouts) return; 7975 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7976 uint8_t event[4]; 7977 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7978 event[1] = sizeof(event) - 2; 7979 little_endian_store_16(event, 2, conn->con_handle); 7980 hci_emit_event(event, sizeof(event), 1); 7981 } 7982 #endif 7983 7984 #ifdef ENABLE_BLE 7985 #ifdef ENABLE_LE_CENTRAL 7986 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){ 7987 uint8_t hci_event[21]; 7988 hci_event[0] = HCI_EVENT_LE_META; 7989 hci_event[1] = sizeof(hci_event) - 2u; 7990 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7991 hci_event[3] = status; 7992 little_endian_store_16(hci_event, 4, con_handle); 7993 hci_event[6] = 0; // TODO: role 7994 hci_event[7] = address_type; 7995 reverse_bd_addr(address, &hci_event[8]); 7996 little_endian_store_16(hci_event, 14, 0); // interval 7997 little_endian_store_16(hci_event, 16, 0); // latency 7998 little_endian_store_16(hci_event, 18, 0); // supervision timeout 7999 hci_event[20] = 0; // master clock accuracy 8000 hci_emit_event(hci_event, sizeof(hci_event), 1); 8001 // emit GAP event, too 8002 uint8_t gap_event[36]; 8003 hci_create_gap_connection_complete_event(hci_event, gap_event); 8004 hci_emit_event(gap_event, sizeof(gap_event), 1); 8005 } 8006 #endif 8007 #endif 8008 8009 static void hci_emit_transport_packet_sent(void){ 8010 // notify upper stack that it might be possible to send again 8011 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8012 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8013 } 8014 8015 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8016 uint8_t event[6]; 8017 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8018 event[1] = sizeof(event) - 2u; 8019 event[2] = 0; // status = OK 8020 little_endian_store_16(event, 3, con_handle); 8021 event[5] = reason; 8022 hci_emit_event(event, sizeof(event), 1); 8023 } 8024 8025 static void hci_emit_nr_connections_changed(void){ 8026 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8027 uint8_t event[3]; 8028 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8029 event[1] = sizeof(event) - 2u; 8030 event[2] = nr_hci_connections(); 8031 hci_emit_event(event, sizeof(event), 1); 8032 } 8033 8034 static void hci_emit_hci_open_failed(void){ 8035 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8036 uint8_t event[2]; 8037 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8038 event[1] = sizeof(event) - 2u; 8039 hci_emit_event(event, sizeof(event), 1); 8040 } 8041 8042 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8043 log_info("hci_emit_dedicated_bonding_result %u ", status); 8044 uint8_t event[9]; 8045 int pos = 0; 8046 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8047 event[pos++] = sizeof(event) - 2u; 8048 event[pos++] = status; 8049 reverse_bd_addr(address, &event[pos]); 8050 hci_emit_event(event, sizeof(event), 1); 8051 } 8052 8053 8054 #ifdef ENABLE_CLASSIC 8055 8056 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8057 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8058 uint8_t event[5]; 8059 int pos = 0; 8060 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8061 event[pos++] = sizeof(event) - 2; 8062 little_endian_store_16(event, 2, con_handle); 8063 pos += 2; 8064 event[pos++] = level; 8065 hci_emit_event(event, sizeof(event), 1); 8066 } 8067 8068 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8069 if (!connection) return LEVEL_0; 8070 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8071 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8072 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8073 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8074 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8075 // LEVEL 4 always requires 128 bit encrytion key size 8076 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8077 security_level = LEVEL_3; 8078 } 8079 return security_level; 8080 } 8081 8082 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8083 uint8_t event[4]; 8084 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8085 event[1] = sizeof(event) - 2; 8086 event[2] = discoverable; 8087 event[3] = connectable; 8088 hci_emit_event(event, sizeof(event), 1); 8089 } 8090 8091 // query if remote side supports eSCO 8092 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8093 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8094 if (!connection) return false; 8095 return (connection->remote_supported_features[0] & 1) != 0; 8096 } 8097 8098 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8099 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8100 if (!connection) return 0; 8101 return connection->remote_supported_sco_packets; 8102 } 8103 8104 static bool hci_ssp_supported(hci_connection_t * connection){ 8105 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8106 return (connection->bonding_flags & mask) == mask; 8107 } 8108 8109 // query if remote side supports SSP 8110 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8111 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8112 if (!connection) return false; 8113 return hci_ssp_supported(connection) ? 1 : 0; 8114 } 8115 8116 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8117 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8118 } 8119 8120 /** 8121 * Check if remote supported features query has completed 8122 */ 8123 bool hci_remote_features_available(hci_con_handle_t handle){ 8124 hci_connection_t * connection = hci_connection_for_handle(handle); 8125 if (!connection) return false; 8126 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8127 } 8128 8129 /** 8130 * Trigger remote supported features query 8131 */ 8132 8133 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8134 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8135 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8136 } 8137 } 8138 8139 void hci_remote_features_query(hci_con_handle_t con_handle){ 8140 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8141 if (!connection) return; 8142 hci_trigger_remote_features_for_connection(connection); 8143 hci_run(); 8144 } 8145 8146 // GAP API 8147 /** 8148 * @bbrief enable/disable bonding. default is enabled 8149 * @praram enabled 8150 */ 8151 void gap_set_bondable_mode(int enable){ 8152 hci_stack->bondable = enable ? 1 : 0; 8153 } 8154 /** 8155 * @brief Get bondable mode. 8156 * @return 1 if bondable 8157 */ 8158 int gap_get_bondable_mode(void){ 8159 return hci_stack->bondable; 8160 } 8161 8162 /** 8163 * @brief map link keys to security levels 8164 */ 8165 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8166 switch (link_key_type){ 8167 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8168 return LEVEL_4; 8169 case COMBINATION_KEY: 8170 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8171 return LEVEL_3; 8172 default: 8173 return LEVEL_2; 8174 } 8175 } 8176 8177 /** 8178 * @brief map link keys to secure connection yes/no 8179 */ 8180 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8181 switch (link_key_type){ 8182 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8183 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8184 return true; 8185 default: 8186 return false; 8187 } 8188 } 8189 8190 /** 8191 * @brief map link keys to authenticated 8192 */ 8193 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8194 switch (link_key_type){ 8195 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8196 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8197 return true; 8198 default: 8199 return false; 8200 } 8201 } 8202 8203 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8204 log_info("gap_mitm_protection_required_for_security_level %u", level); 8205 return level > LEVEL_2; 8206 } 8207 8208 /** 8209 * @brief get current security level 8210 */ 8211 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8212 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8213 if (!connection) return LEVEL_0; 8214 return gap_security_level_for_connection(connection); 8215 } 8216 8217 /** 8218 * @brief request connection to device to 8219 * @result GAP_AUTHENTICATION_RESULT 8220 */ 8221 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8222 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8223 if (!connection){ 8224 hci_emit_security_level(con_handle, LEVEL_0); 8225 return; 8226 } 8227 8228 btstack_assert(hci_is_le_connection(connection) == false); 8229 8230 // 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) 8231 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8232 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8233 requested_level = LEVEL_4; 8234 } 8235 8236 gap_security_level_t current_level = gap_security_level(con_handle); 8237 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8238 requested_level, connection->requested_security_level, current_level); 8239 8240 // authentication active if authentication request was sent or planned level > 0 8241 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8242 if (authentication_active){ 8243 // authentication already active 8244 if (connection->requested_security_level < requested_level){ 8245 // increase requested level as new level is higher 8246 // TODO: handle re-authentication when done 8247 connection->requested_security_level = requested_level; 8248 } 8249 } else { 8250 // no request active, notify if security sufficient 8251 if (requested_level <= current_level){ 8252 hci_emit_security_level(con_handle, current_level); 8253 return; 8254 } 8255 8256 // store request 8257 connection->requested_security_level = requested_level; 8258 8259 // start to authenticate connection 8260 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8261 8262 // request remote features if not already active, also trigger hci_run 8263 hci_remote_features_query(con_handle); 8264 } 8265 } 8266 8267 /** 8268 * @brief start dedicated bonding with device. disconnect after bonding 8269 * @param device 8270 * @param request MITM protection 8271 * @result GAP_DEDICATED_BONDING_COMPLETE 8272 */ 8273 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8274 8275 // create connection state machine 8276 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8277 8278 if (!connection){ 8279 return BTSTACK_MEMORY_ALLOC_FAILED; 8280 } 8281 8282 // delete link key 8283 gap_drop_link_key_for_bd_addr(device); 8284 8285 // configure LEVEL_2/3, dedicated bonding 8286 connection->state = SEND_CREATE_CONNECTION; 8287 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8288 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8289 connection->bonding_flags = BONDING_DEDICATED; 8290 8291 hci_run(); 8292 8293 return 0; 8294 } 8295 8296 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8297 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8298 if (connection == NULL){ 8299 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8300 } 8301 if (defer){ 8302 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8303 } else { 8304 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8305 // trigger disconnect 8306 hci_run(); 8307 } 8308 return ERROR_CODE_SUCCESS; 8309 } 8310 8311 void gap_set_local_name(const char * local_name){ 8312 hci_stack->local_name = local_name; 8313 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8314 // also update EIR if not set by user 8315 if (hci_stack->eir_data == NULL){ 8316 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8317 } 8318 hci_run(); 8319 } 8320 #endif 8321 8322 8323 #ifdef ENABLE_BLE 8324 8325 #ifdef ENABLE_LE_CENTRAL 8326 void gap_start_scan(void){ 8327 hci_stack->le_scanning_enabled = true; 8328 hci_run(); 8329 } 8330 8331 void gap_stop_scan(void){ 8332 hci_stack->le_scanning_enabled = false; 8333 hci_run(); 8334 } 8335 8336 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8337 hci_stack->le_scan_type = scan_type; 8338 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8339 hci_stack->le_scan_interval = scan_interval; 8340 hci_stack->le_scan_window = scan_window; 8341 hci_stack->le_scanning_param_update = true; 8342 hci_run(); 8343 } 8344 8345 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8346 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8347 } 8348 8349 void gap_set_scan_duplicate_filter(bool enabled){ 8350 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8351 } 8352 8353 void gap_set_scan_phys(uint8_t phys){ 8354 // LE Coded and LE 1M PHY 8355 hci_stack->le_scan_phys = phys & 0x05; 8356 } 8357 8358 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8359 // disallow le connection if outgoing already active 8360 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8361 log_error("le connect already active"); 8362 return ERROR_CODE_COMMAND_DISALLOWED; 8363 } 8364 8365 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8366 if (conn == NULL) { 8367 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8368 if (conn == false){ 8369 // alloc failed 8370 log_info("gap_connect: failed to alloc hci_connection_t"); 8371 return BTSTACK_MEMORY_ALLOC_FAILED; 8372 } 8373 } else { 8374 switch (conn->state) { 8375 case RECEIVED_DISCONNECTION_COMPLETE: 8376 // connection was just disconnected, reset state and allow re-connect 8377 conn->role = HCI_ROLE_MASTER; 8378 break; 8379 default: 8380 return ERROR_CODE_COMMAND_DISALLOWED; 8381 } 8382 } 8383 8384 // set le connecting state 8385 if (hci_is_le_connection_type(addr_type)){ 8386 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8387 } 8388 8389 // trigger connect 8390 log_info("gap_connect: send create connection next"); 8391 conn->state = SEND_CREATE_CONNECTION; 8392 hci_run(); 8393 return ERROR_CODE_SUCCESS; 8394 } 8395 8396 // @assumption: only a single outgoing LE Connection exists 8397 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8398 btstack_linked_item_t *it; 8399 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8400 hci_connection_t * conn = (hci_connection_t *) it; 8401 if (hci_is_le_connection(conn)){ 8402 switch (conn->state){ 8403 case SEND_CREATE_CONNECTION: 8404 case SENT_CREATE_CONNECTION: 8405 return conn; 8406 default: 8407 break; 8408 }; 8409 } 8410 } 8411 return NULL; 8412 } 8413 8414 uint8_t gap_connect_cancel(void){ 8415 hci_connection_t * conn; 8416 switch (hci_stack->le_connecting_request){ 8417 case LE_CONNECTING_IDLE: 8418 break; 8419 case LE_CONNECTING_WHITELIST: 8420 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8421 hci_run(); 8422 break; 8423 case LE_CONNECTING_DIRECT: 8424 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8425 conn = gap_get_outgoing_le_connection(); 8426 if (conn == NULL){ 8427 hci_run(); 8428 } else { 8429 switch (conn->state){ 8430 case SEND_CREATE_CONNECTION: 8431 // skip sending create connection and emit event instead 8432 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8433 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8434 btstack_memory_hci_connection_free( conn ); 8435 break; 8436 case SENT_CREATE_CONNECTION: 8437 // let hci_run_general_gap_le cancel outgoing connection 8438 hci_run(); 8439 break; 8440 default: 8441 break; 8442 } 8443 } 8444 break; 8445 default: 8446 btstack_unreachable(); 8447 break; 8448 } 8449 return ERROR_CODE_SUCCESS; 8450 } 8451 8452 /** 8453 * @brief Set connection parameters for outgoing connections 8454 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8455 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8456 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8457 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8458 * @param conn_latency, default: 4 8459 * @param supervision_timeout (unit: 10ms), default: 720 ms 8460 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8461 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8462 */ 8463 8464 void gap_set_connection_phys(uint8_t phys){ 8465 // LE Coded, LE 1M, LE 2M PHY 8466 hci_stack->le_connection_phys = phys & 7; 8467 } 8468 8469 #endif 8470 8471 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8472 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8473 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8474 hci_stack->le_connection_scan_interval = conn_scan_interval; 8475 hci_stack->le_connection_scan_window = conn_scan_window; 8476 hci_stack->le_connection_interval_min = conn_interval_min; 8477 hci_stack->le_connection_interval_max = conn_interval_max; 8478 hci_stack->le_connection_latency = conn_latency; 8479 hci_stack->le_supervision_timeout = supervision_timeout; 8480 hci_stack->le_minimum_ce_length = min_ce_length; 8481 hci_stack->le_maximum_ce_length = max_ce_length; 8482 } 8483 8484 /** 8485 * @brief Updates the connection parameters for a given LE connection 8486 * @param handle 8487 * @param conn_interval_min (unit: 1.25ms) 8488 * @param conn_interval_max (unit: 1.25ms) 8489 * @param conn_latency 8490 * @param supervision_timeout (unit: 10ms) 8491 * @return 0 if ok 8492 */ 8493 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8494 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8495 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8496 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8497 connection->le_conn_interval_min = conn_interval_min; 8498 connection->le_conn_interval_max = conn_interval_max; 8499 connection->le_conn_latency = conn_latency; 8500 connection->le_supervision_timeout = supervision_timeout; 8501 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8502 hci_run(); 8503 return 0; 8504 } 8505 8506 /** 8507 * @brief Request an update of the connection parameter for a given LE connection 8508 * @param handle 8509 * @param conn_interval_min (unit: 1.25ms) 8510 * @param conn_interval_max (unit: 1.25ms) 8511 * @param conn_latency 8512 * @param supervision_timeout (unit: 10ms) 8513 * @return 0 if ok 8514 */ 8515 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8516 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8517 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8518 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8519 connection->le_conn_interval_min = conn_interval_min; 8520 connection->le_conn_interval_max = conn_interval_max; 8521 connection->le_conn_latency = conn_latency; 8522 connection->le_supervision_timeout = supervision_timeout; 8523 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8524 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8525 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8526 return 0; 8527 } 8528 8529 #ifdef ENABLE_LE_PERIPHERAL 8530 8531 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8532 static void hci_assert_advertisement_set_0_ready(void){ 8533 // force advertising set creation for legacy LE Advertising 8534 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8535 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8536 } 8537 } 8538 #endif 8539 8540 /** 8541 * @brief Set Advertisement Data 8542 * @param advertising_data_length 8543 * @param advertising_data (max 31 octets) 8544 * @note data is not copied, pointer has to stay valid 8545 */ 8546 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8547 hci_stack->le_advertisements_data_len = advertising_data_length; 8548 hci_stack->le_advertisements_data = advertising_data; 8549 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8550 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8551 hci_assert_advertisement_set_0_ready(); 8552 #endif 8553 hci_run(); 8554 } 8555 8556 /** 8557 * @brief Set Scan Response Data 8558 * @param advertising_data_length 8559 * @param advertising_data (max 31 octets) 8560 * @note data is not copied, pointer has to stay valid 8561 */ 8562 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8563 hci_stack->le_scan_response_data_len = scan_response_data_length; 8564 hci_stack->le_scan_response_data = scan_response_data; 8565 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8566 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8567 hci_assert_advertisement_set_0_ready(); 8568 #endif 8569 hci_run(); 8570 } 8571 8572 /** 8573 * @brief Set Advertisement Parameters 8574 * @param adv_int_min 8575 * @param adv_int_max 8576 * @param adv_type 8577 * @param direct_address_type 8578 * @param direct_address 8579 * @param channel_map 8580 * @param filter_policy 8581 * 8582 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8583 */ 8584 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8585 uint8_t direct_address_typ, bd_addr_t direct_address, 8586 uint8_t channel_map, uint8_t filter_policy) { 8587 8588 hci_stack->le_advertisements_interval_min = adv_int_min; 8589 hci_stack->le_advertisements_interval_max = adv_int_max; 8590 hci_stack->le_advertisements_type = adv_type; 8591 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8592 hci_stack->le_advertisements_channel_map = channel_map; 8593 hci_stack->le_advertisements_filter_policy = filter_policy; 8594 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8595 6); 8596 8597 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8598 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8599 hci_run(); 8600 } 8601 8602 /** 8603 * @brief Enable/Disable Advertisements 8604 * @param enabled 8605 */ 8606 void gap_advertisements_enable(int enabled){ 8607 if (enabled == 0){ 8608 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8609 } else { 8610 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8611 } 8612 hci_update_advertisements_enabled_for_current_roles(); 8613 hci_run(); 8614 } 8615 8616 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8617 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8618 btstack_linked_list_iterator_t it; 8619 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8620 while (btstack_linked_list_iterator_has_next(&it)){ 8621 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8622 if ( item->advertising_handle == advertising_handle ) { 8623 return item; 8624 } 8625 } 8626 return NULL; 8627 } 8628 8629 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8630 hci_stack->le_resolvable_private_address_update_s = update_s; 8631 hci_run(); 8632 return ERROR_CODE_SUCCESS; 8633 } 8634 8635 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8636 // find free advertisement handle 8637 uint8_t advertisement_handle; 8638 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8639 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8640 } 8641 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8642 // clear 8643 memset(storage, 0, sizeof(le_advertising_set_t)); 8644 // copy params 8645 storage->advertising_handle = advertisement_handle; 8646 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8647 // add to list 8648 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8649 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8650 *out_advertising_handle = advertisement_handle; 8651 // set tasks and start 8652 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8653 hci_run(); 8654 return ERROR_CODE_SUCCESS; 8655 } 8656 8657 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8658 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8659 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8660 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8661 // set tasks and start 8662 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8663 hci_run(); 8664 return ERROR_CODE_SUCCESS; 8665 } 8666 8667 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8668 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8669 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8670 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8671 return ERROR_CODE_SUCCESS; 8672 } 8673 8674 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8675 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8676 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8677 memcpy(advertising_set->random_address, random_address, 6); 8678 // set tasks and start 8679 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8680 hci_run(); 8681 return ERROR_CODE_SUCCESS; 8682 } 8683 8684 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8685 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8686 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8687 advertising_set->adv_data = advertising_data; 8688 advertising_set->adv_data_len = advertising_data_length; 8689 // set tasks and start 8690 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8691 hci_run(); 8692 return ERROR_CODE_SUCCESS; 8693 } 8694 8695 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){ 8696 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8697 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8698 advertising_set->scan_data = scan_response_data; 8699 advertising_set->scan_data_len = scan_response_data_length; 8700 // set tasks and start 8701 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8702 hci_run(); 8703 return ERROR_CODE_SUCCESS; 8704 } 8705 8706 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8707 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8708 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8709 advertising_set->enable_timeout = timeout; 8710 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8711 // set tasks and start 8712 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8713 hci_run(); 8714 return ERROR_CODE_SUCCESS; 8715 } 8716 8717 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8718 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8719 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8720 // set tasks and start 8721 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8722 hci_run(); 8723 return ERROR_CODE_SUCCESS; 8724 } 8725 8726 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8727 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8728 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8729 // set tasks and start 8730 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8731 hci_run(); 8732 return ERROR_CODE_SUCCESS; 8733 } 8734 8735 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8736 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8737 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8738 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8739 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8740 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8741 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8742 // set tasks and start 8743 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8744 hci_run(); 8745 return ERROR_CODE_SUCCESS; 8746 } 8747 8748 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8749 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8750 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8751 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8752 return ERROR_CODE_SUCCESS; 8753 } 8754 8755 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8756 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8757 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8758 advertising_set->periodic_data = periodic_data; 8759 advertising_set->periodic_data_len = periodic_data_length; 8760 // set tasks and start 8761 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8762 hci_run(); 8763 return ERROR_CODE_SUCCESS; 8764 } 8765 8766 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8767 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8768 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8769 // set tasks and start 8770 advertising_set->periodic_include_adi = include_adi; 8771 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8772 hci_run(); 8773 return ERROR_CODE_SUCCESS; 8774 } 8775 8776 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8777 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8778 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8779 // set tasks and start 8780 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8781 hci_run(); 8782 return ERROR_CODE_SUCCESS; 8783 } 8784 8785 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8786 hci_stack->le_past_mode = mode; 8787 hci_stack->le_past_skip = skip; 8788 hci_stack->le_past_sync_timeout = sync_timeout; 8789 hci_stack->le_past_cte_type = cte_type; 8790 hci_stack->le_past_set_default_params = true; 8791 hci_run(); 8792 return ERROR_CODE_SUCCESS; 8793 } 8794 8795 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8796 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8797 if (hci_connection == NULL){ 8798 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8799 } 8800 hci_connection->le_past_sync_handle = sync_handle; 8801 hci_connection->le_past_service_data = service_data; 8802 hci_run(); 8803 return ERROR_CODE_SUCCESS; 8804 } 8805 8806 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8807 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8808 if (hci_connection == NULL){ 8809 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8810 } 8811 hci_connection->le_past_advertising_handle = advertising_handle; 8812 hci_connection->le_past_service_data = service_data; 8813 hci_run(); 8814 return ERROR_CODE_SUCCESS; 8815 } 8816 8817 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8818 8819 #endif 8820 8821 #endif 8822 8823 void hci_le_set_own_address_type(uint8_t own_address_type){ 8824 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8825 if (own_address_type == hci_stack->le_own_addr_type) return; 8826 hci_stack->le_own_addr_type = own_address_type; 8827 8828 #ifdef ENABLE_LE_PERIPHERAL 8829 // update advertisement parameters, too 8830 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8831 hci_run(); 8832 #endif 8833 #ifdef ENABLE_LE_CENTRAL 8834 // note: we don't update scan parameters or modify ongoing connection attempts 8835 #endif 8836 } 8837 8838 void hci_le_random_address_set(const bd_addr_t random_address){ 8839 memcpy(hci_stack->le_random_address, random_address, 6); 8840 hci_stack->le_random_address_set = true; 8841 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8842 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8843 if (hci_extended_advertising_supported()){ 8844 hci_assert_advertisement_set_0_ready(); 8845 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8846 } 8847 #endif 8848 hci_run(); 8849 } 8850 8851 #endif 8852 8853 uint8_t gap_disconnect(hci_con_handle_t handle){ 8854 hci_connection_t * conn = hci_connection_for_handle(handle); 8855 if (!conn){ 8856 hci_emit_disconnection_complete(handle, 0); 8857 return 0; 8858 } 8859 // ignore if already disconnected 8860 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8861 return 0; 8862 } 8863 conn->state = SEND_DISCONNECT; 8864 hci_run(); 8865 return 0; 8866 } 8867 8868 int gap_read_rssi(hci_con_handle_t con_handle){ 8869 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8870 if (hci_connection == NULL) return 0; 8871 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8872 hci_run(); 8873 return 1; 8874 } 8875 8876 /** 8877 * @brief Get connection type 8878 * @param con_handle 8879 * @result connection_type 8880 */ 8881 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8882 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8883 if (!conn) return GAP_CONNECTION_INVALID; 8884 switch (conn->address_type){ 8885 case BD_ADDR_TYPE_LE_PUBLIC: 8886 case BD_ADDR_TYPE_LE_RANDOM: 8887 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8888 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8889 return GAP_CONNECTION_LE; 8890 case BD_ADDR_TYPE_SCO: 8891 return GAP_CONNECTION_SCO; 8892 case BD_ADDR_TYPE_ACL: 8893 return GAP_CONNECTION_ACL; 8894 default: 8895 return GAP_CONNECTION_INVALID; 8896 } 8897 } 8898 8899 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8900 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8901 if (!conn) return HCI_ROLE_INVALID; 8902 return (hci_role_t) conn->role; 8903 } 8904 8905 8906 #ifdef ENABLE_CLASSIC 8907 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8908 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8909 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8910 conn->request_role = role; 8911 hci_run(); 8912 return ERROR_CODE_SUCCESS; 8913 } 8914 #endif 8915 8916 #ifdef ENABLE_BLE 8917 8918 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){ 8919 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8920 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8921 8922 conn->le_phy_update_all_phys = all_phys; 8923 conn->le_phy_update_tx_phys = tx_phys; 8924 conn->le_phy_update_rx_phys = rx_phys; 8925 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8926 8927 hci_run(); 8928 8929 return 0; 8930 } 8931 8932 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8933 8934 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 8935 // incorrect configuration: 8936 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 8937 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 8938 btstack_assert(false); 8939 #endif 8940 8941 // check if already in list 8942 btstack_linked_list_iterator_t it; 8943 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8944 while (btstack_linked_list_iterator_has_next(&it)) { 8945 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8946 if (entry->address_type != address_type) { 8947 continue; 8948 } 8949 if (memcmp(entry->address, address, 6) != 0) { 8950 continue; 8951 } 8952 8953 // if already on controller: 8954 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8955 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8956 // drop remove request 8957 entry->state = LE_WHITELIST_ON_CONTROLLER; 8958 return ERROR_CODE_SUCCESS; 8959 } else { 8960 // disallow as already on controller 8961 return ERROR_CODE_COMMAND_DISALLOWED; 8962 } 8963 } 8964 8965 // assume scheduled to add 8966 return ERROR_CODE_COMMAND_DISALLOWED; 8967 } 8968 8969 // alloc and add to list 8970 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8971 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8972 entry->address_type = address_type; 8973 (void)memcpy(entry->address, address, 6); 8974 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8975 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8976 return ERROR_CODE_SUCCESS; 8977 } 8978 8979 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8980 btstack_linked_list_iterator_t it; 8981 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8982 while (btstack_linked_list_iterator_has_next(&it)){ 8983 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8984 if (entry->address_type != address_type) { 8985 continue; 8986 } 8987 if (memcmp(entry->address, address, 6) != 0) { 8988 continue; 8989 } 8990 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8991 // remove from controller if already present 8992 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8993 } else { 8994 // directly remove entry from whitelist 8995 btstack_linked_list_iterator_remove(&it); 8996 btstack_memory_whitelist_entry_free(entry); 8997 } 8998 return ERROR_CODE_SUCCESS; 8999 } 9000 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9001 } 9002 9003 static void hci_whitelist_clear(void){ 9004 btstack_linked_list_iterator_t it; 9005 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9006 while (btstack_linked_list_iterator_has_next(&it)){ 9007 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9008 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9009 // remove from controller if already present 9010 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9011 continue; 9012 } 9013 // directly remove entry from whitelist 9014 btstack_linked_list_iterator_remove(&it); 9015 btstack_memory_whitelist_entry_free(entry); 9016 } 9017 } 9018 9019 /** 9020 * @brief Clear Whitelist 9021 * @return 0 if ok 9022 */ 9023 uint8_t gap_whitelist_clear(void){ 9024 hci_whitelist_clear(); 9025 hci_run(); 9026 return ERROR_CODE_SUCCESS; 9027 } 9028 9029 /** 9030 * @brief Add Device to Whitelist 9031 * @param address_typ 9032 * @param address 9033 * @return 0 if ok 9034 */ 9035 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9036 uint8_t status = hci_whitelist_add(address_type, address); 9037 if (status){ 9038 return status; 9039 } 9040 hci_run(); 9041 return ERROR_CODE_SUCCESS; 9042 } 9043 9044 /** 9045 * @brief Remove Device from Whitelist 9046 * @param address_typ 9047 * @param address 9048 * @return 0 if ok 9049 */ 9050 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9051 uint8_t status = hci_whitelist_remove(address_type, address); 9052 if (status){ 9053 return status; 9054 } 9055 hci_run(); 9056 return ERROR_CODE_SUCCESS; 9057 } 9058 9059 #ifdef ENABLE_LE_CENTRAL 9060 /** 9061 * @brief Connect with Whitelist 9062 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9063 * @return - if ok 9064 */ 9065 uint8_t gap_connect_with_whitelist(void){ 9066 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9067 return ERROR_CODE_COMMAND_DISALLOWED; 9068 } 9069 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9070 hci_run(); 9071 return ERROR_CODE_SUCCESS; 9072 } 9073 9074 /** 9075 * @brief Auto Connection Establishment - Start Connecting to device 9076 * @param address_typ 9077 * @param address 9078 * @return 0 if ok 9079 */ 9080 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9081 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9082 return ERROR_CODE_COMMAND_DISALLOWED; 9083 } 9084 9085 uint8_t status = hci_whitelist_add(address_type, address); 9086 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9087 return status; 9088 } 9089 9090 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9091 9092 hci_run(); 9093 return ERROR_CODE_SUCCESS; 9094 } 9095 9096 /** 9097 * @brief Auto Connection Establishment - Stop Connecting to device 9098 * @param address_typ 9099 * @param address 9100 * @return 0 if ok 9101 */ 9102 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9103 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9104 return ERROR_CODE_COMMAND_DISALLOWED; 9105 } 9106 9107 hci_whitelist_remove(address_type, address); 9108 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9109 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9110 } 9111 hci_run(); 9112 return 0; 9113 } 9114 9115 /** 9116 * @brief Auto Connection Establishment - Stop everything 9117 * @note Convenience function to stop all active auto connection attempts 9118 */ 9119 uint8_t gap_auto_connection_stop_all(void){ 9120 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9121 return ERROR_CODE_COMMAND_DISALLOWED; 9122 } 9123 hci_whitelist_clear(); 9124 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9125 hci_run(); 9126 return ERROR_CODE_SUCCESS; 9127 } 9128 9129 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9130 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9131 if (!conn) return 0; 9132 return conn->le_connection_interval; 9133 } 9134 #endif 9135 #endif 9136 9137 #ifdef ENABLE_CLASSIC 9138 /** 9139 * @brief Set Extended Inquiry Response data 9140 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9141 * @note has to be done before stack starts up 9142 */ 9143 void gap_set_extended_inquiry_response(const uint8_t * data){ 9144 hci_stack->eir_data = data; 9145 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9146 hci_run(); 9147 } 9148 9149 /** 9150 * @brief Start GAP Classic Inquiry 9151 * @param duration in 1.28s units 9152 * @return 0 if ok 9153 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9154 */ 9155 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9156 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9157 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9158 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9159 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9160 } 9161 hci_stack->inquiry_state = duration_in_1280ms_units; 9162 hci_stack->inquiry_max_period_length = 0; 9163 hci_stack->inquiry_min_period_length = 0; 9164 hci_run(); 9165 return 0; 9166 } 9167 9168 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9169 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9170 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9171 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9172 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9173 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9174 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9175 9176 hci_stack->inquiry_state = duration; 9177 hci_stack->inquiry_max_period_length = max_period_length; 9178 hci_stack->inquiry_min_period_length = min_period_length; 9179 hci_run(); 9180 return 0; 9181 } 9182 9183 /** 9184 * @brief Stop GAP Classic Inquiry 9185 * @return 0 if ok 9186 */ 9187 int gap_inquiry_stop(void){ 9188 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9189 // emit inquiry complete event, before it even started 9190 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9191 hci_emit_event(event, sizeof(event), 1); 9192 return 0; 9193 } 9194 switch (hci_stack->inquiry_state){ 9195 case GAP_INQUIRY_STATE_ACTIVE: 9196 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9197 hci_run(); 9198 return ERROR_CODE_SUCCESS; 9199 case GAP_INQUIRY_STATE_PERIODIC: 9200 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9201 hci_run(); 9202 return ERROR_CODE_SUCCESS; 9203 default: 9204 return ERROR_CODE_COMMAND_DISALLOWED; 9205 } 9206 } 9207 9208 void gap_inquiry_set_lap(uint32_t lap){ 9209 hci_stack->inquiry_lap = lap; 9210 } 9211 9212 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9213 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9214 hci_stack->inquiry_scan_window = inquiry_scan_window; 9215 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9216 hci_run(); 9217 } 9218 9219 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9220 { 9221 hci_stack->inquiry_tx_power_level = tx_power; 9222 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9223 hci_run(); 9224 } 9225 9226 9227 /** 9228 * @brief Remote Name Request 9229 * @param addr 9230 * @param page_scan_repetition_mode 9231 * @param clock_offset only used when bit 15 is set 9232 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9233 */ 9234 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9235 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9236 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9237 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9238 hci_stack->remote_name_clock_offset = clock_offset; 9239 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9240 hci_run(); 9241 return 0; 9242 } 9243 9244 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9245 hci_stack->gap_pairing_state = state; 9246 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9247 hci_run(); 9248 return 0; 9249 } 9250 9251 /** 9252 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9253 * @param addr 9254 * @param pin_data 9255 * @param pin_len 9256 * @return 0 if ok 9257 */ 9258 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9259 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9260 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9261 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9262 hci_stack->gap_pairing_pin_len = pin_len; 9263 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9264 } 9265 9266 /** 9267 * @brief Legacy Pairing Pin Code Response 9268 * @param addr 9269 * @param pin 9270 * @return 0 if ok 9271 */ 9272 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9273 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9274 } 9275 9276 /** 9277 * @brief Abort Legacy Pairing 9278 * @param addr 9279 * @param pin 9280 * @return 0 if ok 9281 */ 9282 int gap_pin_code_negative(bd_addr_t addr){ 9283 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9284 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9285 } 9286 9287 /** 9288 * @brief SSP Passkey Response 9289 * @param addr 9290 * @param passkey 9291 * @return 0 if ok 9292 */ 9293 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9294 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9295 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9296 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9297 } 9298 9299 /** 9300 * @brief Abort SSP Passkey Entry/Pairing 9301 * @param addr 9302 * @param pin 9303 * @return 0 if ok 9304 */ 9305 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9306 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9307 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9308 } 9309 9310 /** 9311 * @brief Accept SSP Numeric Comparison 9312 * @param addr 9313 * @param passkey 9314 * @return 0 if ok 9315 */ 9316 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9317 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9318 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9319 } 9320 9321 /** 9322 * @brief Abort SSP Numeric Comparison/Pairing 9323 * @param addr 9324 * @param pin 9325 * @return 0 if ok 9326 */ 9327 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9328 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9329 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9330 } 9331 9332 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9333 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9334 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9335 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9336 connectionSetAuthenticationFlags(conn, flag); 9337 hci_run(); 9338 return ERROR_CODE_SUCCESS; 9339 } 9340 #endif 9341 9342 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9343 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9344 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9345 } 9346 9347 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9348 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9349 } 9350 #endif 9351 9352 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9353 /** 9354 * @brief Report Remote OOB Data 9355 * @param bd_addr 9356 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9357 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9358 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9359 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9360 */ 9361 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){ 9362 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9363 if (connection == NULL) { 9364 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9365 } 9366 connection->classic_oob_c_192 = c_192; 9367 connection->classic_oob_r_192 = r_192; 9368 9369 // ignore P-256 if not supported by us 9370 if (hci_stack->secure_connections_active){ 9371 connection->classic_oob_c_256 = c_256; 9372 connection->classic_oob_r_256 = r_256; 9373 } 9374 9375 return ERROR_CODE_SUCCESS; 9376 } 9377 /** 9378 * @brief Generate new OOB data 9379 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9380 */ 9381 void gap_ssp_generate_oob_data(void){ 9382 hci_stack->classic_read_local_oob_data = true; 9383 hci_run(); 9384 } 9385 9386 #endif 9387 9388 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9389 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9390 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9391 if (connection == NULL) { 9392 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9393 } 9394 9395 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9396 connection->link_key_type = type; 9397 9398 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9399 } 9400 9401 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9402 /** 9403 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9404 * @param inquiry_mode see bluetooth_defines.h 9405 */ 9406 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9407 hci_stack->inquiry_mode = inquiry_mode; 9408 } 9409 9410 /** 9411 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9412 */ 9413 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9414 hci_stack->sco_voice_setting = voice_setting; 9415 } 9416 9417 /** 9418 * @brief Get SCO Voice Setting 9419 * @return current voice setting 9420 */ 9421 uint16_t hci_get_sco_voice_setting(void){ 9422 return hci_stack->sco_voice_setting; 9423 } 9424 9425 static int hci_have_usb_transport(void){ 9426 if (!hci_stack->hci_transport) return 0; 9427 const char * transport_name = hci_stack->hci_transport->name; 9428 if (!transport_name) return 0; 9429 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9430 } 9431 9432 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9433 uint16_t sco_packet_length = 0; 9434 9435 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9436 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9437 int multiplier; 9438 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9439 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9440 multiplier = 2; 9441 } else { 9442 multiplier = 1; 9443 } 9444 #endif 9445 9446 #ifdef ENABLE_SCO_OVER_HCI 9447 if (hci_have_usb_transport()){ 9448 // see Core Spec for H2 USB Transfer. 9449 // 3 byte SCO header + 24 bytes per connection 9450 // @note multiple sco connections not supported currently 9451 sco_packet_length = 3 + 24 * multiplier; 9452 } else { 9453 // 3 byte SCO header + SCO packet length over the air 9454 sco_packet_length = 3 + payload_size * multiplier; 9455 // assert that it still fits inside an SCO buffer 9456 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9457 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9458 } 9459 } 9460 #endif 9461 #ifdef HAVE_SCO_TRANSPORT 9462 // 3 byte SCO header + SCO packet length over the air 9463 sco_packet_length = 3 + payload_size * multiplier; 9464 // assert that it still fits inside an SCO buffer 9465 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9466 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9467 } 9468 #endif 9469 return sco_packet_length; 9470 } 9471 9472 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9473 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9474 if (connection != NULL){ 9475 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9476 } 9477 return 0; 9478 } 9479 9480 uint16_t hci_get_sco_packet_length(void){ 9481 btstack_linked_list_iterator_t it; 9482 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9483 while (btstack_linked_list_iterator_has_next(&it)){ 9484 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9485 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9486 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9487 } 9488 } 9489 return 0; 9490 } 9491 9492 /** 9493 * @brief Sets the master/slave policy 9494 * @param policy (0: attempt to become master, 1: let connecting device decide) 9495 */ 9496 void hci_set_master_slave_policy(uint8_t policy){ 9497 hci_stack->master_slave_policy = policy; 9498 } 9499 9500 #endif 9501 9502 HCI_STATE hci_get_state(void){ 9503 return hci_stack->state; 9504 } 9505 9506 #ifdef ENABLE_CLASSIC 9507 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9508 hci_stack->gap_classic_accept_callback = accept_callback; 9509 } 9510 #endif 9511 9512 /** 9513 * @brief Set callback for Bluetooth Hardware Error 9514 */ 9515 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9516 hci_stack->hardware_error_callback = fn; 9517 } 9518 9519 void hci_disconnect_all(void){ 9520 btstack_linked_list_iterator_t it; 9521 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9522 while (btstack_linked_list_iterator_has_next(&it)){ 9523 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9524 if (con->state == SENT_DISCONNECT) continue; 9525 con->state = SEND_DISCONNECT; 9526 } 9527 hci_run(); 9528 } 9529 9530 uint16_t hci_get_manufacturer(void){ 9531 return hci_stack->manufacturer; 9532 } 9533 9534 #ifdef ENABLE_BLE 9535 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9536 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9537 if (!hci_con) return NULL; 9538 return &hci_con->sm_connection; 9539 } 9540 9541 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9542 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9543 #endif 9544 9545 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9546 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9547 if (hci_connection == NULL) return 0; 9548 if (hci_is_le_connection(hci_connection)){ 9549 #ifdef ENABLE_BLE 9550 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9551 if (sm_conn->sm_connection_encrypted != 0u) { 9552 return sm_conn->sm_actual_encryption_key_size; 9553 } 9554 #endif 9555 } else { 9556 #ifdef ENABLE_CLASSIC 9557 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9558 return hci_connection->encryption_key_size; 9559 } 9560 #endif 9561 } 9562 return 0; 9563 } 9564 9565 bool gap_authenticated(hci_con_handle_t con_handle){ 9566 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9567 if (hci_connection == NULL) return false; 9568 9569 switch (hci_connection->address_type){ 9570 #ifdef ENABLE_BLE 9571 case BD_ADDR_TYPE_LE_PUBLIC: 9572 case BD_ADDR_TYPE_LE_RANDOM: 9573 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9574 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9575 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9576 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9577 #endif 9578 #ifdef ENABLE_CLASSIC 9579 case BD_ADDR_TYPE_SCO: 9580 case BD_ADDR_TYPE_ACL: 9581 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9582 #endif 9583 default: 9584 return false; 9585 } 9586 } 9587 9588 bool gap_secure_connection(hci_con_handle_t con_handle){ 9589 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9590 if (hci_connection == NULL) return 0; 9591 9592 switch (hci_connection->address_type){ 9593 #ifdef ENABLE_BLE 9594 case BD_ADDR_TYPE_LE_PUBLIC: 9595 case BD_ADDR_TYPE_LE_RANDOM: 9596 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9597 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9598 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9599 return hci_connection->sm_connection.sm_connection_sc; 9600 #endif 9601 #ifdef ENABLE_CLASSIC 9602 case BD_ADDR_TYPE_SCO: 9603 case BD_ADDR_TYPE_ACL: 9604 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9605 #endif 9606 default: 9607 return false; 9608 } 9609 } 9610 9611 bool gap_bonded(hci_con_handle_t con_handle){ 9612 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9613 if (hci_connection == NULL) return 0; 9614 9615 #ifdef ENABLE_CLASSIC 9616 link_key_t link_key; 9617 link_key_type_t link_key_type; 9618 #endif 9619 switch (hci_connection->address_type){ 9620 #ifdef ENABLE_BLE 9621 case BD_ADDR_TYPE_LE_PUBLIC: 9622 case BD_ADDR_TYPE_LE_RANDOM: 9623 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9624 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9625 return hci_connection->sm_connection.sm_le_db_index >= 0; 9626 #endif 9627 #ifdef ENABLE_CLASSIC 9628 case BD_ADDR_TYPE_SCO: 9629 case BD_ADDR_TYPE_ACL: 9630 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9631 #endif 9632 default: 9633 return false; 9634 } 9635 } 9636 9637 #ifdef ENABLE_BLE 9638 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9639 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9640 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9641 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9642 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9643 return sm_conn->sm_connection_authorization_state; 9644 } 9645 #endif 9646 9647 #ifdef ENABLE_CLASSIC 9648 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){ 9649 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9650 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9651 conn->sniff_min_interval = sniff_min_interval; 9652 conn->sniff_max_interval = sniff_max_interval; 9653 conn->sniff_attempt = sniff_attempt; 9654 conn->sniff_timeout = sniff_timeout; 9655 hci_run(); 9656 return 0; 9657 } 9658 9659 /** 9660 * @brief Exit Sniff mode 9661 * @param con_handle 9662 @ @return 0 if ok 9663 */ 9664 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9665 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9666 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9667 conn->sniff_min_interval = 0xffff; 9668 hci_run(); 9669 return 0; 9670 } 9671 9672 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){ 9673 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9674 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9675 conn->sniff_subrating_max_latency = max_latency; 9676 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9677 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9678 hci_run(); 9679 return ERROR_CODE_SUCCESS; 9680 } 9681 9682 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){ 9683 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9684 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9685 conn->qos_service_type = service_type; 9686 conn->qos_token_rate = token_rate; 9687 conn->qos_peak_bandwidth = peak_bandwidth; 9688 conn->qos_latency = latency; 9689 conn->qos_delay_variation = delay_variation; 9690 hci_run(); 9691 return ERROR_CODE_SUCCESS; 9692 } 9693 9694 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9695 hci_stack->new_page_scan_interval = page_scan_interval; 9696 hci_stack->new_page_scan_window = page_scan_window; 9697 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9698 hci_run(); 9699 } 9700 9701 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9702 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9703 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9704 hci_run(); 9705 } 9706 9707 void gap_set_page_timeout(uint16_t page_timeout){ 9708 hci_stack->page_timeout = page_timeout; 9709 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9710 hci_run(); 9711 } 9712 9713 #endif 9714 9715 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9716 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9717 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9718 if (le_device_db_index >= le_device_db_max_count()) return; 9719 uint8_t offset = le_device_db_index >> 3; 9720 uint8_t mask = 1 << (le_device_db_index & 7); 9721 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9722 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9723 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9724 // note: go back to remove entries, otherwise, a remove + add will skip the add 9725 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9726 } 9727 } 9728 9729 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9730 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9731 if (le_device_db_index >= le_device_db_max_count()) return; 9732 uint8_t offset = le_device_db_index >> 3; 9733 uint8_t mask = 1 << (le_device_db_index & 7); 9734 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9735 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9736 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9737 } 9738 } 9739 9740 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9741 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9742 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9743 } 9744 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9745 // restart le resolving list update 9746 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9747 } 9748 return ERROR_CODE_SUCCESS; 9749 } 9750 9751 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9752 hci_stack->le_privacy_mode = privacy_mode; 9753 } 9754 #endif 9755 9756 #ifdef ENABLE_BLE 9757 #ifdef ENABLE_LE_CENTRAL 9758 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9759 9760 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9761 9762 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9763 // incorrect configuration: 9764 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9765 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9766 btstack_assert(false); 9767 #endif 9768 9769 // check if already in list 9770 btstack_linked_list_iterator_t it; 9771 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9772 while (btstack_linked_list_iterator_has_next(&it)) { 9773 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9774 if (entry->sid != advertising_sid) { 9775 continue; 9776 } 9777 if (entry->address_type != address_type) { 9778 continue; 9779 } 9780 if (memcmp(entry->address, address, 6) != 0) { 9781 continue; 9782 } 9783 // disallow if already scheduled to add 9784 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9785 return ERROR_CODE_COMMAND_DISALLOWED; 9786 } 9787 // still on controller, but scheduled to remove -> re-add 9788 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9789 return ERROR_CODE_SUCCESS; 9790 } 9791 // alloc and add to list 9792 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9793 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9794 entry->sid = advertising_sid; 9795 entry->address_type = address_type; 9796 (void)memcpy(entry->address, address, 6); 9797 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9798 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9799 return ERROR_CODE_SUCCESS; 9800 } 9801 9802 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9803 btstack_linked_list_iterator_t it; 9804 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9805 while (btstack_linked_list_iterator_has_next(&it)){ 9806 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9807 if (entry->sid != advertising_sid) { 9808 continue; 9809 } 9810 if (entry->address_type != address_type) { 9811 continue; 9812 } 9813 if (memcmp(entry->address, address, 6) != 0) { 9814 continue; 9815 } 9816 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9817 // remove from controller if already present 9818 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9819 } else { 9820 // directly remove entry from whitelist 9821 btstack_linked_list_iterator_remove(&it); 9822 btstack_memory_periodic_advertiser_list_entry_free(entry); 9823 } 9824 return ERROR_CODE_SUCCESS; 9825 } 9826 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9827 } 9828 9829 static void hci_periodic_advertiser_list_clear(void){ 9830 btstack_linked_list_iterator_t it; 9831 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9832 while (btstack_linked_list_iterator_has_next(&it)){ 9833 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9834 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9835 // remove from controller if already present 9836 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9837 continue; 9838 } 9839 // directly remove entry from whitelist 9840 btstack_linked_list_iterator_remove(&it); 9841 btstack_memory_periodic_advertiser_list_entry_free(entry); 9842 } 9843 } 9844 9845 uint8_t gap_periodic_advertiser_list_clear(void){ 9846 hci_periodic_advertiser_list_clear(); 9847 hci_run(); 9848 return ERROR_CODE_SUCCESS; 9849 } 9850 9851 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9852 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9853 if (status){ 9854 return status; 9855 } 9856 hci_run(); 9857 return ERROR_CODE_SUCCESS; 9858 } 9859 9860 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9861 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9862 if (status){ 9863 return status; 9864 } 9865 hci_run(); 9866 return ERROR_CODE_SUCCESS; 9867 } 9868 9869 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9870 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9871 // abort if already active 9872 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9873 return ERROR_CODE_COMMAND_DISALLOWED; 9874 } 9875 // store request 9876 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9877 hci_stack->le_periodic_sync_options = options; 9878 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9879 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9880 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9881 hci_stack->le_periodic_sync_skip = skip; 9882 hci_stack->le_periodic_sync_timeout = sync_timeout; 9883 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9884 9885 hci_run(); 9886 return ERROR_CODE_SUCCESS; 9887 } 9888 9889 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9890 // abort if not requested 9891 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9892 return ERROR_CODE_COMMAND_DISALLOWED; 9893 } 9894 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9895 hci_run(); 9896 return ERROR_CODE_SUCCESS; 9897 } 9898 9899 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9900 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9901 return ERROR_CODE_COMMAND_DISALLOWED; 9902 } 9903 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9904 hci_run(); 9905 return ERROR_CODE_SUCCESS; 9906 } 9907 9908 #endif 9909 #endif 9910 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9911 static hci_iso_stream_t * 9912 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9913 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9914 if (iso_stream != NULL){ 9915 iso_stream->iso_type = iso_type; 9916 iso_stream->state = state; 9917 iso_stream->group_id = group_id; 9918 iso_stream->stream_id = stream_id; 9919 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9920 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9921 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9922 } 9923 return iso_stream; 9924 } 9925 9926 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9927 btstack_linked_list_iterator_t it; 9928 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9929 while (btstack_linked_list_iterator_has_next(&it)){ 9930 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9931 if (iso_stream->cis_handle == con_handle ) { 9932 return iso_stream; 9933 } 9934 } 9935 return NULL; 9936 } 9937 9938 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9939 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9940 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9941 btstack_memory_hci_iso_stream_free(iso_stream); 9942 } 9943 9944 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9945 btstack_linked_list_iterator_t it; 9946 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9947 while (btstack_linked_list_iterator_has_next(&it)){ 9948 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9949 if ((iso_stream->group_id == group_id) && 9950 (iso_stream->iso_type == iso_type)){ 9951 btstack_linked_list_iterator_remove(&it); 9952 btstack_memory_hci_iso_stream_free(iso_stream); 9953 } 9954 } 9955 } 9956 9957 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9958 btstack_linked_list_iterator_t it; 9959 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9960 while (btstack_linked_list_iterator_has_next(&it)){ 9961 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9962 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9963 (iso_stream->group_id == group_id)){ 9964 btstack_linked_list_iterator_remove(&it); 9965 btstack_memory_hci_iso_stream_free(iso_stream); 9966 } 9967 } 9968 } 9969 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9970 btstack_linked_list_iterator_t it; 9971 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9972 while (btstack_linked_list_iterator_has_next(&it)){ 9973 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9974 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9975 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9976 } 9977 } 9978 } 9979 9980 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9981 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9982 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9983 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9984 return (sdu_len_offset + 2 + sdu_len) == size; 9985 } 9986 9987 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 9988 if (iso_stream == NULL){ 9989 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 9990 return; 9991 } 9992 9993 if (hci_stack->iso_packet_handler == NULL) { 9994 return; 9995 } 9996 9997 // parse header 9998 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 9999 uint16_t data_total_length = little_endian_read_16(packet, 2); 10000 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10001 10002 // assert packet is complete 10003 if ((data_total_length + 4u) != size){ 10004 return; 10005 } 10006 10007 if ((pb_flag & 0x01) == 0){ 10008 if (pb_flag == 0x02){ 10009 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10010 if (hci_iso_sdu_complete(packet, size)) { 10011 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10012 } 10013 } else { 10014 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10015 if (size > sizeof(iso_stream->reassembly_buffer)){ 10016 return; 10017 } 10018 memcpy(iso_stream->reassembly_buffer, packet, size); 10019 // fix pb_flag 10020 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10021 iso_stream->reassembly_pos = size; 10022 } 10023 } else { 10024 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10025 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10026 if (ts_flag != 0){ 10027 return; 10028 } 10029 // append fragment 10030 if (iso_stream->reassembly_pos == 0){ 10031 return; 10032 } 10033 10034 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10035 // reset reassembly buffer 10036 iso_stream->reassembly_pos = 0; 10037 return; 10038 } 10039 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10040 iso_stream->reassembly_pos += data_total_length; 10041 10042 // deliver if last fragment and SDU complete 10043 if (pb_flag == 0x03){ 10044 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10045 // fix data_total_length 10046 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10047 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10048 } 10049 // reset reassembly buffer 10050 iso_stream->reassembly_pos = 0; 10051 } 10052 } 10053 } 10054 10055 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10056 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10057 uint16_t pos = 0; 10058 event[pos++] = HCI_EVENT_META_GAP; 10059 event[pos++] = 4 + (2 * big->num_bis); 10060 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10061 event[pos++] = status; 10062 event[pos++] = big->big_handle; 10063 event[pos++] = big->num_bis; 10064 uint8_t i; 10065 for (i=0;i<big->num_bis;i++){ 10066 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10067 pos += 2; 10068 } 10069 hci_emit_event(event, pos, 0); 10070 } 10071 10072 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10073 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10074 uint16_t pos = 0; 10075 event[pos++] = HCI_EVENT_META_GAP; 10076 event[pos++] = 4 + (2 * cig->num_cis); 10077 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10078 event[pos++] = status; 10079 event[pos++] = cig->cig_id; 10080 event[pos++] = cig->num_cis; 10081 uint8_t i; 10082 for (i=0;i<cig->num_cis;i++){ 10083 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10084 pos += 2; 10085 } 10086 hci_emit_event(event, pos, 0); 10087 } 10088 10089 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10090 uint16_t pos = 0; 10091 event[pos++] = HCI_EVENT_META_GAP; 10092 event[pos++] = 8; 10093 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10094 event[pos++] = status; 10095 event[pos++] = iso_stream->group_id; 10096 event[pos++] = iso_stream->stream_id; 10097 little_endian_store_16(event, pos, iso_stream->cis_handle); 10098 pos += 2; 10099 little_endian_store_16(event, pos, iso_stream->acl_handle); 10100 pos += 2; 10101 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10102 pos += 2; 10103 event[pos++] = iso_stream->number_of_subevents; 10104 event[pos++] = iso_stream->burst_number_c_to_p; 10105 event[pos++] = iso_stream->burst_number_p_to_c; 10106 event[pos++] = iso_stream->flush_timeout_c_to_p; 10107 event[pos++] = iso_stream->flush_timeout_p_to_c; 10108 return pos; 10109 } 10110 10111 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10112 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10113 // cache data before finalizing struct 10114 uint8_t event [17]; 10115 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10116 btstack_assert(pos <= sizeof(event)); 10117 if (status != ERROR_CODE_SUCCESS){ 10118 hci_iso_stream_finalize(iso_stream); 10119 } 10120 hci_emit_event(event, pos, 0); 10121 } 10122 10123 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10124 uint8_t event [4]; 10125 uint16_t pos = 0; 10126 event[pos++] = HCI_EVENT_META_GAP; 10127 event[pos++] = 2; 10128 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10129 event[pos++] = big->big_handle; 10130 hci_emit_event(event, pos, 0); 10131 } 10132 10133 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10134 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10135 uint16_t pos = 0; 10136 event[pos++] = HCI_EVENT_META_GAP; 10137 event[pos++] = 4; 10138 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10139 event[pos++] = status; 10140 event[pos++] = big_sync->big_handle; 10141 event[pos++] = big_sync->num_bis; 10142 uint8_t i; 10143 for (i=0;i<big_sync->num_bis;i++){ 10144 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10145 pos += 2; 10146 } 10147 hci_emit_event(event, pos, 0); 10148 } 10149 10150 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10151 uint8_t event [4]; 10152 uint16_t pos = 0; 10153 event[pos++] = HCI_EVENT_META_GAP; 10154 event[pos++] = 2; 10155 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10156 event[pos++] = big_handle; 10157 hci_emit_event(event, pos, 0); 10158 } 10159 10160 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10161 uint8_t event[6]; 10162 uint16_t pos = 0; 10163 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10164 event[pos++] = sizeof(event) - 2; 10165 event[pos++] = big->big_handle; 10166 event[pos++] = bis_index; 10167 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10168 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10169 } 10170 10171 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10172 uint8_t event[4]; 10173 uint16_t pos = 0; 10174 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10175 event[pos++] = sizeof(event) - 2; 10176 little_endian_store_16(event, pos, cis_con_handle); 10177 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10178 } 10179 10180 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10181 btstack_linked_list_iterator_t it; 10182 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10183 while (btstack_linked_list_iterator_has_next(&it)){ 10184 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10185 if ( big->big_handle == big_handle ) { 10186 return big; 10187 } 10188 } 10189 return NULL; 10190 } 10191 10192 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10193 btstack_linked_list_iterator_t it; 10194 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10195 while (btstack_linked_list_iterator_has_next(&it)){ 10196 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10197 if ( big_sync->big_handle == big_handle ) { 10198 return big_sync; 10199 } 10200 } 10201 return NULL; 10202 } 10203 10204 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10205 hci_stack->iso_packets_to_queue = num_packets; 10206 } 10207 10208 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10209 btstack_linked_list_iterator_t it; 10210 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10211 while (btstack_linked_list_iterator_has_next(&it)){ 10212 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10213 if ( cig->cig_id == cig_id ) { 10214 return cig; 10215 } 10216 } 10217 return NULL; 10218 } 10219 10220 static void hci_iso_notify_can_send_now(void){ 10221 10222 // BIG 10223 10224 btstack_linked_list_iterator_t it; 10225 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10226 while (btstack_linked_list_iterator_has_next(&it)){ 10227 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10228 // track number completed packet timestamps 10229 if (big->num_completed_timestamp_current_valid){ 10230 big->num_completed_timestamp_current_valid = false; 10231 if (big->num_completed_timestamp_previous_valid){ 10232 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10233 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10234 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10235 big->num_completed_timestamp_previous_ms); 10236 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10237 // to catch up, skip packet on all BIS 10238 uint8_t i; 10239 for (i=0;i<big->num_bis;i++){ 10240 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10241 if (iso_stream){ 10242 iso_stream->num_packets_to_skip++; 10243 } 10244 } 10245 } 10246 } 10247 big->num_completed_timestamp_previous_valid = true; 10248 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10249 } 10250 10251 if (big->can_send_now_requested){ 10252 // check if no outgoing iso packets pending and no can send now have to be emitted 10253 uint8_t i; 10254 bool can_send = true; 10255 uint8_t num_iso_queued_minimum = 0; 10256 for (i=0;i<big->num_bis;i++){ 10257 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10258 if (iso_stream == NULL) continue; 10259 // handle case where individual ISO packet was sent too late: 10260 // for each additionally queued packet, a new one needs to get skipped 10261 if (i==0){ 10262 num_iso_queued_minimum = iso_stream->num_packets_sent; 10263 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10264 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10265 iso_stream->num_packets_to_skip += num_packets_to_skip; 10266 iso_stream->num_packets_sent -= num_packets_to_skip; 10267 } 10268 // check if we can send now 10269 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10270 can_send = false; 10271 break; 10272 } 10273 } 10274 if (can_send){ 10275 // propagate can send now to individual streams 10276 big->can_send_now_requested = false; 10277 for (i=0;i<big->num_bis;i++){ 10278 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10279 iso_stream->emit_ready_to_send = true; 10280 } 10281 } 10282 } 10283 } 10284 10285 if (hci_stack->hci_packet_buffer_reserved) return; 10286 10287 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10288 while (btstack_linked_list_iterator_has_next(&it)){ 10289 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10290 // report bis ready 10291 uint8_t i; 10292 for (i=0;i<big->num_bis;i++){ 10293 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10294 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10295 iso_stream->emit_ready_to_send = false; 10296 hci_emit_bis_can_send_now(big, i); 10297 break; 10298 } 10299 } 10300 } 10301 10302 // CIS 10303 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10304 while (btstack_linked_list_iterator_has_next(&it)) { 10305 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10306 if ((iso_stream->can_send_now_requested) && 10307 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10308 iso_stream->can_send_now_requested = false; 10309 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10310 } 10311 } 10312 } 10313 10314 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10315 // make big handle unique and usuable for big and big sync 10316 if (hci_big_for_handle(big_handle) != NULL){ 10317 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10318 } 10319 if (hci_big_sync_for_handle(big_handle) != NULL){ 10320 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10321 } 10322 if (num_bis == 0){ 10323 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10324 } 10325 if (num_bis > MAX_NR_BIS){ 10326 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10327 } 10328 10329 // reserve ISO Streams 10330 uint8_t i; 10331 uint8_t status = ERROR_CODE_SUCCESS; 10332 for (i=0;i<num_bis;i++){ 10333 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10334 if (iso_stream == NULL) { 10335 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10336 break; 10337 } 10338 } 10339 10340 // free structs on error 10341 if (status != ERROR_CODE_SUCCESS){ 10342 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10343 } 10344 10345 return status; 10346 } 10347 10348 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10349 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10350 if (status != ERROR_CODE_SUCCESS){ 10351 return status; 10352 } 10353 10354 le_audio_big_t * big = storage; 10355 big->big_handle = big_params->big_handle; 10356 big->params = big_params; 10357 big->state = LE_AUDIO_BIG_STATE_CREATE; 10358 big->num_bis = big_params->num_bis; 10359 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10360 10361 hci_run(); 10362 10363 return ERROR_CODE_SUCCESS; 10364 } 10365 10366 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10367 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10368 if (status != ERROR_CODE_SUCCESS){ 10369 return status; 10370 } 10371 10372 le_audio_big_sync_t * big_sync = storage; 10373 big_sync->big_handle = big_sync_params->big_handle; 10374 big_sync->params = big_sync_params; 10375 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10376 big_sync->num_bis = big_sync_params->num_bis; 10377 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10378 10379 hci_run(); 10380 10381 return ERROR_CODE_SUCCESS; 10382 } 10383 10384 uint8_t gap_big_terminate(uint8_t big_handle){ 10385 le_audio_big_t * big = hci_big_for_handle(big_handle); 10386 if (big == NULL){ 10387 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10388 } 10389 switch (big->state){ 10390 case LE_AUDIO_BIG_STATE_CREATE: 10391 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10392 hci_emit_big_terminated(big); 10393 break; 10394 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10395 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10396 break; 10397 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10398 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10399 case LE_AUDIO_BIG_STATE_ACTIVE: 10400 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10401 hci_run(); 10402 break; 10403 default: 10404 return ERROR_CODE_COMMAND_DISALLOWED; 10405 } 10406 return ERROR_CODE_SUCCESS; 10407 } 10408 10409 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10410 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10411 if (big_sync == NULL){ 10412 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10413 } 10414 switch (big_sync->state){ 10415 case LE_AUDIO_BIG_STATE_CREATE: 10416 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10417 hci_emit_big_sync_stopped(big_handle); 10418 break; 10419 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10420 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10421 break; 10422 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10423 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10424 case LE_AUDIO_BIG_STATE_ACTIVE: 10425 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10426 hci_run(); 10427 break; 10428 default: 10429 return ERROR_CODE_COMMAND_DISALLOWED; 10430 } 10431 return ERROR_CODE_SUCCESS; 10432 } 10433 10434 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10435 le_audio_big_t * big = hci_big_for_handle(big_handle); 10436 if (big == NULL){ 10437 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10438 } 10439 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10440 return ERROR_CODE_COMMAND_DISALLOWED; 10441 } 10442 big->can_send_now_requested = true; 10443 hci_iso_notify_can_send_now(); 10444 return ERROR_CODE_SUCCESS; 10445 } 10446 10447 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10448 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10449 if (iso_stream == NULL){ 10450 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10451 } 10452 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10453 return ERROR_CODE_COMMAND_DISALLOWED; 10454 } 10455 iso_stream->can_send_now_requested = true; 10456 hci_iso_notify_can_send_now(); 10457 return ERROR_CODE_SUCCESS; 10458 } 10459 10460 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10461 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10462 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10463 } 10464 if (cig_params->num_cis == 0){ 10465 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10466 } 10467 if (cig_params->num_cis > MAX_NR_CIS){ 10468 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10469 } 10470 10471 // reserve ISO Streams 10472 uint8_t i; 10473 uint8_t status = ERROR_CODE_SUCCESS; 10474 for (i=0;i<cig_params->num_cis;i++){ 10475 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10476 if (iso_stream == NULL) { 10477 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10478 break; 10479 } 10480 } 10481 10482 // free structs on error 10483 if (status != ERROR_CODE_SUCCESS){ 10484 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10485 return status; 10486 } 10487 10488 le_audio_cig_t * cig = storage; 10489 cig->cig_id = cig_params->cig_id; 10490 cig->num_cis = cig_params->num_cis; 10491 cig->params = cig_params; 10492 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10493 for (i=0;i<cig->num_cis;i++){ 10494 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10495 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10496 cig->cis_setup_active[i] = false; 10497 cig->cis_established[i] = false; 10498 } 10499 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10500 10501 hci_run(); 10502 10503 return ERROR_CODE_SUCCESS; 10504 } 10505 10506 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10507 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10508 if (cig == NULL){ 10509 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10510 } 10511 10512 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10513 return ERROR_CODE_COMMAND_DISALLOWED; 10514 } 10515 10516 // store ACL Connection Handles 10517 uint8_t i; 10518 for (i=0;i<cig->num_cis;i++){ 10519 // check that all con handles exist and store 10520 hci_con_handle_t cis_handle = cis_con_handles[i]; 10521 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10522 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10523 } 10524 uint8_t j; 10525 bool found = false; 10526 for (j=0;j<cig->num_cis;j++){ 10527 if (cig->cis_con_handles[j] == cis_handle){ 10528 cig->acl_con_handles[j] = acl_con_handles[j]; 10529 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10530 btstack_assert(iso_stream != NULL); 10531 iso_stream->acl_handle = acl_con_handles[j]; 10532 found = true; 10533 break; 10534 } 10535 } 10536 if (!found){ 10537 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10538 } 10539 } 10540 10541 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10542 hci_run(); 10543 10544 return ERROR_CODE_SUCCESS; 10545 } 10546 10547 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10548 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10549 if (iso_stream == NULL){ 10550 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10551 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10552 } 10553 10554 // set next state and continue 10555 iso_stream->state = state; 10556 hci_run(); 10557 return ERROR_CODE_SUCCESS; 10558 } 10559 10560 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10561 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10562 } 10563 10564 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10565 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10566 } 10567 10568 10569 #endif 10570 #endif /* ENABLE_BLE */ 10571 10572 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10573 void hci_setup_test_connections_fuzz(void){ 10574 hci_connection_t * conn; 10575 10576 // default address: 66:55:44:33:00:01 10577 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10578 10579 // setup Controller info 10580 hci_stack->num_cmd_packets = 255; 10581 hci_stack->acl_packets_total_num = 255; 10582 10583 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10584 addr[5] = 0x01; 10585 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10586 conn->con_handle = addr[5]; 10587 conn->state = RECEIVED_CONNECTION_REQUEST; 10588 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10589 10590 // setup incoming Classic SCO connection with con handle 0x0002 10591 addr[5] = 0x02; 10592 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10593 conn->con_handle = addr[5]; 10594 conn->state = RECEIVED_CONNECTION_REQUEST; 10595 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10596 10597 // setup ready Classic ACL connection with con handle 0x0003 10598 addr[5] = 0x03; 10599 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10600 conn->con_handle = addr[5]; 10601 conn->state = OPEN; 10602 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10603 10604 // setup ready Classic SCO connection with con handle 0x0004 10605 addr[5] = 0x04; 10606 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10607 conn->con_handle = addr[5]; 10608 conn->state = OPEN; 10609 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10610 10611 // setup ready LE ACL connection with con handle 0x005 and public address 10612 addr[5] = 0x05; 10613 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10614 conn->con_handle = addr[5]; 10615 conn->state = OPEN; 10616 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10617 conn->sm_connection.sm_connection_encrypted = 1; 10618 } 10619 10620 void hci_free_connections_fuzz(void){ 10621 btstack_linked_list_iterator_t it; 10622 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10623 while (btstack_linked_list_iterator_has_next(&it)){ 10624 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10625 btstack_linked_list_iterator_remove(&it); 10626 btstack_memory_hci_connection_free(con); 10627 } 10628 } 10629 void hci_simulate_working_fuzz(void){ 10630 hci_stack->le_scanning_param_update = false; 10631 hci_init_done(); 10632 hci_stack->num_cmd_packets = 255; 10633 } 10634 #endif 10635