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 int hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 241 hci_iso_stream_state_t state); 242 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 243 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 244 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 245 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 246 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 247 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 248 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 249 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 250 static void hci_iso_notify_can_send_now(void); 251 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 252 static void hci_emit_big_terminated(const le_audio_big_t * big); 253 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 254 static void hci_emit_big_sync_stopped(uint8_t big_handle); 255 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 256 static void 257 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status); 258 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 259 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 260 #endif /* ENABLE_BLE */ 261 262 // the STACK is here 263 #ifndef HAVE_MALLOC 264 static hci_stack_t hci_stack_static; 265 #endif 266 static hci_stack_t * hci_stack = NULL; 267 268 #ifdef ENABLE_CLASSIC 269 // default name 270 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 271 272 // test helper 273 static uint8_t disable_l2cap_timeouts = 0; 274 #endif 275 276 // reset connection state on create and on reconnect 277 // don't overwrite addr, con handle, role 278 static void hci_connection_init(hci_connection_t * conn){ 279 conn->authentication_flags = AUTH_FLAG_NONE; 280 conn->bonding_flags = 0; 281 conn->requested_security_level = LEVEL_0; 282 #ifdef ENABLE_CLASSIC 283 conn->request_role = HCI_ROLE_INVALID; 284 conn->sniff_subrating_max_latency = 0xffff; 285 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 286 conn->link_key_type = INVALID_LINK_KEY; 287 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 288 btstack_run_loop_set_timer_context(&conn->timeout, conn); 289 hci_connection_timestamp(conn); 290 #endif 291 conn->acl_recombination_length = 0; 292 conn->acl_recombination_pos = 0; 293 conn->num_packets_sent = 0; 294 295 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 296 #ifdef ENABLE_BLE 297 conn->le_phy_update_all_phys = 0xff; 298 #endif 299 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 300 conn->le_max_tx_octets = 27; 301 #endif 302 #ifdef ENABLE_CLASSIC_PAIRING_OOB 303 conn->classic_oob_c_192 = NULL; 304 conn->classic_oob_r_192 = NULL; 305 conn->classic_oob_c_256 = NULL; 306 conn->classic_oob_r_256 = NULL; 307 #endif 308 } 309 310 /** 311 * create connection for given address 312 * 313 * @return connection OR NULL, if no memory left 314 */ 315 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 316 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 317 318 hci_connection_t * conn = btstack_memory_hci_connection_get(); 319 if (!conn) return NULL; 320 hci_connection_init(conn); 321 322 bd_addr_copy(conn->address, addr); 323 conn->address_type = addr_type; 324 conn->con_handle = HCI_CON_HANDLE_INVALID; 325 conn->role = HCI_ROLE_INVALID; 326 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 327 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 328 #endif 329 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 330 331 return conn; 332 } 333 334 335 /** 336 * get le connection parameter range 337 * 338 * @return le connection parameter range struct 339 */ 340 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 341 *range = hci_stack->le_connection_parameter_range; 342 } 343 344 /** 345 * set le connection parameter range 346 * 347 */ 348 349 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 350 hci_stack->le_connection_parameter_range = *range; 351 } 352 353 /** 354 * @brief Test if connection parameters are inside in existing rage 355 * @param conn_interval_min (unit: 1.25ms) 356 * @param conn_interval_max (unit: 1.25ms) 357 * @param conn_latency 358 * @param supervision_timeout (unit: 10ms) 359 * @return 1 if included 360 */ 361 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){ 362 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 363 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 364 365 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 366 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 367 368 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 369 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 370 371 return 1; 372 } 373 374 /** 375 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 376 * @note: default: 1 377 * @param max_peripheral_connections 378 */ 379 #ifdef ENABLE_LE_PERIPHERAL 380 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 381 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 382 } 383 #endif 384 385 /** 386 * get hci connections iterator 387 * 388 * @return hci connections iterator 389 */ 390 391 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 392 btstack_linked_list_iterator_init(it, &hci_stack->connections); 393 } 394 395 /** 396 * get connection for a given handle 397 * 398 * @return connection OR NULL, if not found 399 */ 400 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 401 btstack_linked_list_iterator_t it; 402 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 403 while (btstack_linked_list_iterator_has_next(&it)){ 404 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 405 if ( item->con_handle == con_handle ) { 406 return item; 407 } 408 } 409 return NULL; 410 } 411 412 /** 413 * get connection for given address 414 * 415 * @return connection OR NULL, if not found 416 */ 417 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 418 btstack_linked_list_iterator_t it; 419 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 420 while (btstack_linked_list_iterator_has_next(&it)){ 421 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 422 if (connection->address_type != addr_type) continue; 423 if (memcmp(addr, connection->address, 6) != 0) continue; 424 return connection; 425 } 426 return NULL; 427 } 428 429 #ifdef ENABLE_CLASSIC 430 431 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 432 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 433 } 434 435 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 436 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 437 } 438 439 #ifdef ENABLE_SCO_OVER_HCI 440 static int hci_number_sco_connections(void){ 441 int connections = 0; 442 btstack_linked_list_iterator_t it; 443 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 444 while (btstack_linked_list_iterator_has_next(&it)){ 445 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 446 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 447 connections++; 448 } 449 return connections; 450 } 451 #endif 452 453 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 454 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 455 #ifdef HAVE_EMBEDDED_TICK 456 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 457 // connections might be timed out 458 hci_emit_l2cap_check_timeout(connection); 459 } 460 #else 461 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 462 // connections might be timed out 463 hci_emit_l2cap_check_timeout(connection); 464 } 465 #endif 466 } 467 468 static void hci_connection_timestamp(hci_connection_t *connection){ 469 #ifdef HAVE_EMBEDDED_TICK 470 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 471 #else 472 connection->timestamp = btstack_run_loop_get_time_ms(); 473 #endif 474 } 475 476 /** 477 * add authentication flags and reset timer 478 * @note: assumes classic connection 479 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 480 */ 481 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 482 bd_addr_t addr; 483 reverse_bd_addr(bd_addr, addr); 484 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 485 if (conn) { 486 connectionSetAuthenticationFlags(conn, flags); 487 hci_connection_timestamp(conn); 488 } 489 } 490 491 static bool hci_pairing_active(hci_connection_t * hci_connection){ 492 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 493 } 494 495 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 496 if (hci_pairing_active(hci_connection)) return; 497 if (ssp){ 498 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 499 } else { 500 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 501 } 502 // if we are initiator, we have sent an HCI Authenticate Request 503 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 504 505 // if we are responder, use minimal service security level as required level 506 if (!initiator){ 507 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); 508 } 509 510 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 511 512 uint8_t event[12]; 513 event[0] = GAP_EVENT_PAIRING_STARTED; 514 event[1] = 10; 515 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 516 reverse_bd_addr(hci_connection->address, &event[4]); 517 event[10] = (uint8_t) ssp; 518 event[11] = (uint8_t) initiator; 519 hci_emit_event(event, sizeof(event), 1); 520 } 521 522 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 523 hci_connection->requested_security_level = LEVEL_0; 524 if (!hci_pairing_active(hci_connection)) return; 525 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 526 #ifdef ENABLE_CLASSIC_PAIRING_OOB 527 hci_connection->classic_oob_c_192 = NULL; 528 hci_connection->classic_oob_r_192 = NULL; 529 hci_connection->classic_oob_c_256 = NULL; 530 hci_connection->classic_oob_r_256 = NULL; 531 #endif 532 log_info("pairing complete, status %02x", status); 533 534 uint8_t event[11]; 535 event[0] = GAP_EVENT_PAIRING_COMPLETE; 536 event[1] = 9; 537 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 538 reverse_bd_addr(hci_connection->address, &event[4]); 539 event[10] = status; 540 hci_emit_event(event, sizeof(event), 1); 541 542 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 543 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 544 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 545 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 546 hci_connection->bonding_status = status; 547 } 548 } 549 550 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 551 hci_connection_t * conn = hci_connection_for_handle(handle); 552 if (!conn) return false; 553 return hci_pairing_active(conn); 554 } 555 556 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 557 if (!hci_stack->link_key_db) return; 558 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 559 hci_stack->link_key_db->delete_link_key(addr); 560 } 561 562 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 563 if (!hci_stack->link_key_db) return; 564 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 565 hci_stack->link_key_db->put_link_key(addr, link_key, type); 566 } 567 568 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 569 if (!hci_stack->link_key_db) return false; 570 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 571 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 572 return result; 573 } 574 575 void gap_delete_all_link_keys(void){ 576 bd_addr_t addr; 577 link_key_t link_key; 578 link_key_type_t type; 579 btstack_link_key_iterator_t it; 580 int ok = gap_link_key_iterator_init(&it); 581 if (!ok) { 582 log_error("could not initialize iterator"); 583 return; 584 } 585 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 586 gap_drop_link_key_for_bd_addr(addr); 587 } 588 gap_link_key_iterator_done(&it); 589 } 590 591 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 592 if (!hci_stack->link_key_db) return 0; 593 if (!hci_stack->link_key_db->iterator_init) return 0; 594 return hci_stack->link_key_db->iterator_init(it); 595 } 596 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){ 597 if (!hci_stack->link_key_db) return 0; 598 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 599 } 600 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 601 if (!hci_stack->link_key_db) return; 602 hci_stack->link_key_db->iterator_done(it); 603 } 604 #endif 605 606 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 607 switch (address_type){ 608 case BD_ADDR_TYPE_LE_PUBLIC: 609 case BD_ADDR_TYPE_LE_RANDOM: 610 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 611 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 612 return true; 613 default: 614 return false; 615 } 616 } 617 618 static int hci_is_le_connection(hci_connection_t * connection){ 619 return hci_is_le_connection_type(connection->address_type); 620 } 621 622 /** 623 * count connections 624 */ 625 static int nr_hci_connections(void){ 626 int count = 0; 627 btstack_linked_item_t *it; 628 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 629 count++; 630 } 631 return count; 632 } 633 634 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 635 636 unsigned int num_packets_sent_classic = 0; 637 unsigned int num_packets_sent_le = 0; 638 639 btstack_linked_item_t *it; 640 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 641 hci_connection_t * connection = (hci_connection_t *) it; 642 if (hci_is_le_connection(connection)){ 643 num_packets_sent_le += connection->num_packets_sent; 644 } 645 if (connection->address_type == BD_ADDR_TYPE_ACL){ 646 num_packets_sent_classic += connection->num_packets_sent; 647 } 648 } 649 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 650 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 651 int free_slots_le = 0; 652 653 if (free_slots_classic < 0){ 654 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); 655 return 0; 656 } 657 658 if (hci_stack->le_acl_packets_total_num){ 659 // if we have LE slots, they are used 660 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 661 if (free_slots_le < 0){ 662 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); 663 return 0; 664 } 665 } else { 666 // otherwise, classic slots are used for LE, too 667 free_slots_classic -= num_packets_sent_le; 668 if (free_slots_classic < 0){ 669 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); 670 return 0; 671 } 672 } 673 674 switch (address_type){ 675 case BD_ADDR_TYPE_UNKNOWN: 676 log_error("hci_number_free_acl_slots: unknown address type"); 677 return 0; 678 679 case BD_ADDR_TYPE_ACL: 680 return (uint16_t) free_slots_classic; 681 682 default: 683 if (hci_stack->le_acl_packets_total_num > 0){ 684 return (uint16_t) free_slots_le; 685 } 686 return (uint16_t) free_slots_classic; 687 } 688 } 689 690 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 691 // get connection type 692 hci_connection_t * connection = hci_connection_for_handle(con_handle); 693 if (!connection){ 694 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 695 return 0; 696 } 697 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 698 } 699 700 #ifdef ENABLE_CLASSIC 701 static int hci_number_free_sco_slots(void){ 702 unsigned int num_sco_packets_sent = 0; 703 btstack_linked_item_t *it; 704 if (hci_stack->synchronous_flow_control_enabled){ 705 // explicit flow control 706 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 707 hci_connection_t * connection = (hci_connection_t *) it; 708 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 709 num_sco_packets_sent += connection->num_packets_sent; 710 } 711 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 712 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 713 return 0; 714 } 715 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 716 } else { 717 // implicit flow control -- TODO 718 int num_ready = 0; 719 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 720 hci_connection_t * connection = (hci_connection_t *) it; 721 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 722 if (connection->sco_tx_ready == 0) continue; 723 num_ready++; 724 } 725 return num_ready; 726 } 727 } 728 #endif 729 730 // only used to send HCI Host Number Completed Packets 731 static int hci_can_send_comand_packet_transport(void){ 732 if (hci_stack->hci_packet_buffer_reserved) return 0; 733 734 // check for async hci transport implementations 735 if (hci_stack->hci_transport->can_send_packet_now){ 736 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 737 return 0; 738 } 739 } 740 return 1; 741 } 742 743 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 744 bool hci_can_send_command_packet_now(void){ 745 if (hci_can_send_comand_packet_transport() == 0) return false; 746 return hci_stack->num_cmd_packets > 0u; 747 } 748 749 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 750 // check for async hci transport implementations 751 if (!hci_stack->hci_transport->can_send_packet_now) return true; 752 return hci_stack->hci_transport->can_send_packet_now(packet_type); 753 } 754 755 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 756 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 757 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 758 } 759 760 bool hci_can_send_acl_le_packet_now(void){ 761 if (hci_stack->hci_packet_buffer_reserved) return false; 762 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 763 } 764 765 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 766 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 767 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 768 } 769 770 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 771 if (hci_stack->hci_packet_buffer_reserved) return false; 772 return hci_can_send_prepared_acl_packet_now(con_handle); 773 } 774 775 #ifdef ENABLE_CLASSIC 776 bool hci_can_send_acl_classic_packet_now(void){ 777 if (hci_stack->hci_packet_buffer_reserved) return false; 778 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 779 } 780 781 bool hci_can_send_prepared_sco_packet_now(void){ 782 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 783 if (hci_have_usb_transport()){ 784 return hci_stack->sco_can_send_now; 785 } else { 786 return hci_number_free_sco_slots() > 0; 787 } 788 } 789 790 bool hci_can_send_sco_packet_now(void){ 791 if (hci_stack->hci_packet_buffer_reserved) return false; 792 return hci_can_send_prepared_sco_packet_now(); 793 } 794 795 void hci_request_sco_can_send_now_event(void){ 796 hci_stack->sco_waiting_for_can_send_now = 1; 797 hci_notify_if_sco_can_send_now(); 798 } 799 #endif 800 801 // used for internal checks in l2cap.c 802 bool hci_is_packet_buffer_reserved(void){ 803 return hci_stack->hci_packet_buffer_reserved; 804 } 805 806 // reserves outgoing packet buffer. 807 // @return 1 if successful 808 bool hci_reserve_packet_buffer(void){ 809 if (hci_stack->hci_packet_buffer_reserved) { 810 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 811 return false; 812 } 813 hci_stack->hci_packet_buffer_reserved = true; 814 return true; 815 } 816 817 void hci_release_packet_buffer(void){ 818 hci_stack->hci_packet_buffer_reserved = false; 819 } 820 821 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 822 static int hci_transport_synchronous(void){ 823 return hci_stack->hci_transport->can_send_packet_now == NULL; 824 } 825 826 // used for debugging 827 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 828 static void hci_controller_dump_packets(void){ 829 // format: "{handle:04x}:{count:02d} " 830 char summaries[3][7 * 8 + 1]; 831 uint16_t totals[3]; 832 uint8_t index; 833 for (index = 0 ; index < 3 ; index++){ 834 summaries[index][0] = 0; 835 totals[index] = 0; 836 } 837 btstack_linked_item_t *it; 838 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 839 hci_connection_t * connection = (hci_connection_t *) it; 840 switch (connection->address_type){ 841 case BD_ADDR_TYPE_ACL: 842 index = 0; 843 break; 844 case BD_ADDR_TYPE_SCO: 845 index = 2; 846 break; 847 default: 848 index = 1; 849 break; 850 } 851 totals[index] += connection->num_packets_sent; 852 char item_text[10]; 853 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 854 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 855 } 856 for (index = 0 ; index < 3 ; index++){ 857 if (summaries[index][0] == 0){ 858 summaries[index][0] = '-'; 859 summaries[index][1] = 0; 860 } 861 } 862 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]); 863 } 864 #endif 865 866 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 867 868 // 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); 869 870 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 871 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 872 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 873 max_acl_data_packet_length = hci_stack->le_data_packets_length; 874 } 875 876 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 877 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 878 max_acl_data_packet_length = connection->le_max_tx_octets; 879 } 880 #endif 881 882 log_debug("hci_send_acl_packet_fragments entered"); 883 884 uint8_t status = ERROR_CODE_SUCCESS; 885 // multiple packets could be send on a synchronous HCI transport 886 while (true){ 887 888 log_debug("hci_send_acl_packet_fragments loop entered"); 889 890 // get current data 891 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 892 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 893 bool more_fragments = false; 894 895 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 896 if (current_acl_data_packet_length > max_acl_data_packet_length){ 897 more_fragments = true; 898 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 899 } 900 901 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 902 if (acl_header_pos > 0u){ 903 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 904 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 905 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 906 } 907 908 // update header len 909 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 910 911 // count packet 912 connection->num_packets_sent++; 913 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 914 915 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 916 if (more_fragments){ 917 // update start of next fragment to send 918 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 919 } else { 920 // done 921 hci_stack->acl_fragmentation_pos = 0; 922 hci_stack->acl_fragmentation_total_size = 0; 923 } 924 925 // send packet 926 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 927 const int size = current_acl_data_packet_length + 4; 928 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 929 hci_stack->acl_fragmentation_tx_active = 1; 930 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 931 if (err != 0){ 932 // no error from HCI Transport expected 933 status = ERROR_CODE_HARDWARE_FAILURE; 934 } 935 936 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 937 hci_controller_dump_packets(); 938 #endif 939 940 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 941 942 // done yet? 943 if (!more_fragments) break; 944 945 // can send more? 946 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 947 } 948 949 log_debug("hci_send_acl_packet_fragments loop over"); 950 951 // release buffer now for synchronous transport 952 if (hci_transport_synchronous()){ 953 hci_stack->acl_fragmentation_tx_active = 0; 954 hci_release_packet_buffer(); 955 hci_emit_transport_packet_sent(); 956 } 957 958 return status; 959 } 960 961 // pre: caller has reserved the packet buffer 962 uint8_t hci_send_acl_packet_buffer(int size){ 963 btstack_assert(hci_stack->hci_packet_buffer_reserved); 964 965 uint8_t * packet = hci_stack->hci_packet_buffer; 966 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 967 968 // check for free places on Bluetooth module 969 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 970 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 971 hci_release_packet_buffer(); 972 hci_emit_transport_packet_sent(); 973 return BTSTACK_ACL_BUFFERS_FULL; 974 } 975 976 hci_connection_t *connection = hci_connection_for_handle( con_handle); 977 if (!connection) { 978 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 979 hci_release_packet_buffer(); 980 hci_emit_transport_packet_sent(); 981 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 982 } 983 984 #ifdef ENABLE_CLASSIC 985 hci_connection_timestamp(connection); 986 #endif 987 988 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 989 990 // setup data 991 hci_stack->acl_fragmentation_total_size = size; 992 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 993 994 return hci_send_acl_packet_fragments(connection); 995 } 996 997 #ifdef ENABLE_CLASSIC 998 // pre: caller has reserved the packet buffer 999 uint8_t hci_send_sco_packet_buffer(int size){ 1000 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1001 1002 uint8_t * packet = hci_stack->hci_packet_buffer; 1003 1004 // skip checks in loopback mode 1005 if (!hci_stack->loopback_mode){ 1006 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1007 1008 // check for free places on Bluetooth module 1009 if (!hci_can_send_prepared_sco_packet_now()) { 1010 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1011 hci_release_packet_buffer(); 1012 hci_emit_transport_packet_sent(); 1013 return BTSTACK_ACL_BUFFERS_FULL; 1014 } 1015 1016 // track send packet in connection struct 1017 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1018 if (!connection) { 1019 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1020 hci_release_packet_buffer(); 1021 hci_emit_transport_packet_sent(); 1022 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1023 } 1024 1025 if (hci_have_usb_transport()){ 1026 // token used 1027 hci_stack->sco_can_send_now = false; 1028 } else { 1029 if (hci_stack->synchronous_flow_control_enabled){ 1030 connection->num_packets_sent++; 1031 } else { 1032 connection->sco_tx_ready--; 1033 } 1034 } 1035 } 1036 1037 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1038 1039 #ifdef HAVE_SCO_TRANSPORT 1040 hci_stack->sco_transport->send_packet(packet, size); 1041 hci_release_packet_buffer(); 1042 hci_emit_transport_packet_sent(); 1043 1044 return 0; 1045 #else 1046 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1047 if (hci_transport_synchronous()){ 1048 hci_release_packet_buffer(); 1049 hci_emit_transport_packet_sent(); 1050 } 1051 1052 if (err != 0){ 1053 return ERROR_CODE_HARDWARE_FAILURE; 1054 } 1055 return ERROR_CODE_SUCCESS; 1056 #endif 1057 } 1058 #endif 1059 1060 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1061 static uint8_t hci_send_iso_packet_fragments(void){ 1062 1063 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1064 uint8_t status = ERROR_CODE_SUCCESS; 1065 // multiple packets could be send on a synchronous HCI transport 1066 while (true){ 1067 1068 // get current data 1069 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1070 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1071 bool more_fragments = false; 1072 1073 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1074 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1075 more_fragments = true; 1076 current_iso_data_packet_length = max_iso_data_packet_length; 1077 } 1078 1079 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1080 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1081 uint8_t pb_flags; 1082 if (iso_header_pos == 0u){ 1083 // first fragment, keep TS field 1084 pb_flags = more_fragments ? 0x00 : 0x02; 1085 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1086 } else { 1087 // later fragment, drop TS field 1088 pb_flags = more_fragments ? 0x01 : 0x03; 1089 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1090 } 1091 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1092 1093 // update header len 1094 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1095 1096 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1097 if (more_fragments){ 1098 // update start of next fragment to send 1099 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1100 } else { 1101 // done 1102 hci_stack->iso_fragmentation_pos = 0; 1103 hci_stack->iso_fragmentation_total_size = 0; 1104 } 1105 1106 // send packet 1107 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1108 const int size = current_iso_data_packet_length + 4; 1109 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1110 hci_stack->iso_fragmentation_tx_active = true; 1111 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1112 if (err != 0){ 1113 // no error from HCI Transport expected 1114 status = ERROR_CODE_HARDWARE_FAILURE; 1115 } 1116 1117 // done yet? 1118 if (!more_fragments) break; 1119 1120 // can send more? 1121 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1122 } 1123 1124 // release buffer now for synchronous transport 1125 if (hci_transport_synchronous()){ 1126 hci_stack->iso_fragmentation_tx_active = false; 1127 hci_release_packet_buffer(); 1128 hci_emit_transport_packet_sent(); 1129 } 1130 1131 return status; 1132 } 1133 1134 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1135 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1136 1137 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1138 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1139 if (iso_stream == NULL){ 1140 hci_release_packet_buffer(); 1141 hci_iso_notify_can_send_now(); 1142 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1143 } 1144 1145 // TODO: check for space on controller 1146 1147 // skip iso packets if needed 1148 if (iso_stream->num_packets_to_skip > 0){ 1149 iso_stream->num_packets_to_skip--; 1150 // pretend it was processed and trigger next one 1151 hci_release_packet_buffer(); 1152 hci_iso_notify_can_send_now(); 1153 return ERROR_CODE_SUCCESS; 1154 } 1155 1156 // track outgoing packet sent 1157 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1158 iso_stream->num_packets_sent++; 1159 1160 // setup data 1161 hci_stack->iso_fragmentation_total_size = size; 1162 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1163 1164 return hci_send_iso_packet_fragments(); 1165 } 1166 #endif 1167 1168 static void acl_handler(uint8_t *packet, uint16_t size){ 1169 1170 // get info 1171 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1172 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1173 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1174 uint16_t acl_length = READ_ACL_LENGTH(packet); 1175 1176 // ignore non-registered handle 1177 if (!conn){ 1178 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1179 return; 1180 } 1181 1182 // assert packet is complete 1183 if ((acl_length + 4u) != size){ 1184 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1185 return; 1186 } 1187 1188 #ifdef ENABLE_CLASSIC 1189 // update idle timestamp 1190 hci_connection_timestamp(conn); 1191 #endif 1192 1193 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1194 hci_stack->host_completed_packets = 1; 1195 conn->num_packets_completed++; 1196 #endif 1197 1198 // handle different packet types 1199 switch (acl_flags & 0x03u) { 1200 1201 case 0x01: // continuation fragment 1202 1203 // sanity checks 1204 if (conn->acl_recombination_pos == 0u) { 1205 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1206 return; 1207 } 1208 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1209 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1210 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1211 conn->acl_recombination_pos = 0; 1212 return; 1213 } 1214 1215 // append fragment payload (header already stored) 1216 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1217 &packet[4], acl_length); 1218 conn->acl_recombination_pos += acl_length; 1219 1220 // forward complete L2CAP packet if complete. 1221 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1222 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1223 // reset recombination buffer 1224 conn->acl_recombination_length = 0; 1225 conn->acl_recombination_pos = 0; 1226 } 1227 break; 1228 1229 case 0x02: { // first fragment 1230 1231 // sanity check 1232 if (conn->acl_recombination_pos) { 1233 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1234 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1235 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1236 } 1237 conn->acl_recombination_pos = 0; 1238 } 1239 1240 // peek into L2CAP packet! 1241 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1242 1243 // compare fragment size to L2CAP packet size 1244 if (acl_length >= (l2cap_length + 4u)){ 1245 // forward fragment as L2CAP packet 1246 hci_emit_acl_packet(packet, acl_length + 4u); 1247 } else { 1248 1249 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1250 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1251 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1252 return; 1253 } 1254 1255 // store first fragment and tweak acl length for complete package 1256 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1257 packet, acl_length + 4u); 1258 conn->acl_recombination_pos = acl_length + 4u; 1259 conn->acl_recombination_length = l2cap_length; 1260 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1261 } 1262 break; 1263 1264 } 1265 default: 1266 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1267 return; 1268 } 1269 1270 // execute main loop 1271 hci_run(); 1272 } 1273 1274 static void hci_connection_stop_timer(hci_connection_t * conn){ 1275 btstack_run_loop_remove_timer(&conn->timeout); 1276 #ifdef ENABLE_CLASSIC 1277 btstack_run_loop_remove_timer(&conn->timeout_sco); 1278 #endif 1279 } 1280 1281 static void hci_shutdown_connection(hci_connection_t *conn){ 1282 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1283 1284 #ifdef ENABLE_CLASSIC 1285 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1286 bd_addr_type_t addr_type = conn->address_type; 1287 #endif 1288 #ifdef HAVE_SCO_TRANSPORT 1289 hci_con_handle_t con_handle = conn->con_handle; 1290 #endif 1291 #endif 1292 1293 hci_connection_stop_timer(conn); 1294 1295 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1296 btstack_memory_hci_connection_free( conn ); 1297 1298 // now it's gone 1299 hci_emit_nr_connections_changed(); 1300 1301 #ifdef ENABLE_CLASSIC 1302 #ifdef ENABLE_SCO_OVER_HCI 1303 // update SCO 1304 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1305 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1306 } 1307 #endif 1308 #ifdef HAVE_SCO_TRANSPORT 1309 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1310 hci_stack->sco_transport->close(con_handle); 1311 } 1312 #endif 1313 #endif 1314 } 1315 1316 #ifdef ENABLE_CLASSIC 1317 1318 static const uint16_t packet_type_sizes[] = { 1319 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1320 HCI_ACL_DH1_SIZE, 0, 0, 0, 1321 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1322 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1323 }; 1324 static const uint8_t packet_type_feature_requirement_bit[] = { 1325 0, // 3 slot packets 1326 1, // 5 slot packets 1327 25, // EDR 2 mpbs 1328 26, // EDR 3 mbps 1329 39, // 3 slot EDR packts 1330 40, // 5 slot EDR packet 1331 }; 1332 static const uint16_t packet_type_feature_packet_mask[] = { 1333 0x0f00, // 3 slot packets 1334 0xf000, // 5 slot packets 1335 0x1102, // EDR 2 mpbs 1336 0x2204, // EDR 3 mbps 1337 0x0300, // 3 slot EDR packts 1338 0x3000, // 5 slot EDR packet 1339 }; 1340 1341 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1342 // enable packet types based on size 1343 uint16_t packet_types = 0; 1344 unsigned int i; 1345 for (i=0;i<16;i++){ 1346 if (packet_type_sizes[i] == 0) continue; 1347 if (packet_type_sizes[i] <= buffer_size){ 1348 packet_types |= 1 << i; 1349 } 1350 } 1351 // disable packet types due to missing local supported features 1352 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1353 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1354 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1355 if (feature_set) continue; 1356 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1357 packet_types &= ~packet_type_feature_packet_mask[i]; 1358 } 1359 // flip bits for "may not be used" 1360 packet_types ^= 0x3306; 1361 return packet_types; 1362 } 1363 1364 uint16_t hci_usable_acl_packet_types(void){ 1365 return hci_stack->packet_types; 1366 } 1367 #endif 1368 1369 uint8_t* hci_get_outgoing_packet_buffer(void){ 1370 // hci packet buffer is >= acl data packet length 1371 return hci_stack->hci_packet_buffer; 1372 } 1373 1374 uint16_t hci_max_acl_data_packet_length(void){ 1375 return hci_stack->acl_data_packet_length; 1376 } 1377 1378 #ifdef ENABLE_CLASSIC 1379 bool hci_extended_sco_link_supported(void){ 1380 // No. 31, byte 3, bit 7 1381 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1382 } 1383 #endif 1384 1385 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1386 // No. 54, byte 6, bit 6 1387 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1388 } 1389 1390 #ifdef ENABLE_CLASSIC 1391 static int gap_ssp_supported(void){ 1392 // No. 51, byte 6, bit 3 1393 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1394 } 1395 #endif 1396 1397 static int hci_classic_supported(void){ 1398 #ifdef ENABLE_CLASSIC 1399 // No. 37, byte 4, bit 5, = No BR/EDR Support 1400 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1401 #else 1402 return 0; 1403 #endif 1404 } 1405 1406 static int hci_le_supported(void){ 1407 #ifdef ENABLE_BLE 1408 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1409 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1410 #else 1411 return 0; 1412 #endif 1413 } 1414 1415 static bool hci_command_supported(uint8_t command_index){ 1416 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1417 } 1418 1419 #ifdef ENABLE_BLE 1420 1421 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1422 static bool hci_extended_advertising_supported(void){ 1423 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1424 } 1425 #endif 1426 1427 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1428 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1429 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1430 } else { 1431 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1432 } 1433 } 1434 1435 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1436 *addr_type = hci_stack->le_own_addr_type; 1437 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1438 } 1439 1440 #ifdef ENABLE_LE_PERIPHERAL 1441 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1442 *addr_type = hci_stack->le_advertisements_own_addr_type; 1443 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1444 }; 1445 #endif 1446 1447 #ifdef ENABLE_LE_CENTRAL 1448 1449 /** 1450 * @brief Get own addr type and address used for LE connections (Central) 1451 */ 1452 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1453 *addr_type = hci_stack->le_connection_own_addr_type; 1454 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1455 } 1456 1457 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1458 1459 uint16_t offset = 3; 1460 uint8_t num_reports = packet[offset]; 1461 offset += 1; 1462 1463 uint16_t i; 1464 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1465 for (i=0; (i<num_reports) && (offset < size);i++){ 1466 // sanity checks on data_length: 1467 uint8_t data_length = packet[offset + 8]; 1468 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1469 if ((offset + 9u + data_length + 1u) > size) return; 1470 // setup event 1471 uint8_t event_size = 10u + data_length; 1472 uint16_t pos = 0; 1473 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1474 event[pos++] = event_size; 1475 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1476 offset += 8; 1477 pos += 8; 1478 event[pos++] = packet[offset + 1 + data_length]; // rssi 1479 event[pos++] = data_length; 1480 offset++; 1481 (void)memcpy(&event[pos], &packet[offset], data_length); 1482 pos += data_length; 1483 offset += data_length + 1u; // rssi 1484 hci_emit_event(event, pos, 1); 1485 } 1486 } 1487 1488 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1489 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1490 uint16_t offset = 3; 1491 uint8_t num_reports = packet[offset++]; 1492 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1493 uint8_t i; 1494 for (i=0; (i<num_reports) && (offset < size);i++){ 1495 // sanity checks on data_length: 1496 uint16_t data_length = packet[offset + 23]; 1497 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1498 if ((offset + 24u + data_length) > size) return; 1499 uint16_t event_type = little_endian_read_16(packet, offset); 1500 offset += 2; 1501 if ((event_type & 0x10) != 0) { 1502 // setup legacy event 1503 uint8_t legacy_event_type; 1504 switch (event_type){ 1505 case 0b0010011: 1506 // ADV_IND 1507 legacy_event_type = 0; 1508 break; 1509 case 0b0010101: 1510 // ADV_DIRECT_IND 1511 legacy_event_type = 1; 1512 break; 1513 case 0b0010010: 1514 // ADV_SCAN_IND 1515 legacy_event_type = 2; 1516 break; 1517 case 0b0010000: 1518 // ADV_NONCONN_IND 1519 legacy_event_type = 3; 1520 break; 1521 case 0b0011011: 1522 case 0b0011010: 1523 // SCAN_RSP 1524 legacy_event_type = 4; 1525 break; 1526 default: 1527 legacy_event_type = 0; 1528 break; 1529 } 1530 uint16_t pos = 0; 1531 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1532 event[pos++] = 10u + data_length; 1533 event[pos++] = legacy_event_type; 1534 // copy address type + address 1535 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1536 offset += 7; 1537 pos += 7; 1538 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1539 offset += 4; 1540 // copy rssi 1541 event[pos++] = packet[offset++]; 1542 // skip periodic advertising interval and direct address 1543 offset += 9; 1544 // copy data len + data; 1545 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1546 pos += 1 +data_length; 1547 offset += 1+ data_length; 1548 hci_emit_event(event, pos, 1); 1549 } else { 1550 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1551 uint8_t report_len = 24 + data_length; 1552 event[1] = report_len; 1553 little_endian_store_16(event, 2, event_type); 1554 memcpy(&event[4], &packet[offset], report_len); 1555 offset += report_len; 1556 hci_emit_event(event, 2 + report_len, 1); 1557 } 1558 } 1559 } 1560 #endif 1561 1562 #endif 1563 #endif 1564 1565 #ifdef ENABLE_BLE 1566 #ifdef ENABLE_LE_PERIPHERAL 1567 static void hci_update_advertisements_enabled_for_current_roles(void){ 1568 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1569 // get number of active le slave connections 1570 int num_slave_connections = 0; 1571 btstack_linked_list_iterator_t it; 1572 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1573 while (btstack_linked_list_iterator_has_next(&it)){ 1574 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1575 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1576 if (con->state != OPEN) continue; 1577 if (con->role != HCI_ROLE_SLAVE) continue; 1578 if (!hci_is_le_connection(con)) continue; 1579 num_slave_connections++; 1580 } 1581 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1582 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1583 } else { 1584 hci_stack->le_advertisements_enabled_for_current_roles = false; 1585 } 1586 } 1587 #endif 1588 #endif 1589 1590 #ifdef ENABLE_CLASSIC 1591 static void gap_run_set_local_name(void){ 1592 hci_reserve_packet_buffer(); 1593 uint8_t * packet = hci_stack->hci_packet_buffer; 1594 // construct HCI Command and send 1595 uint16_t opcode = hci_write_local_name.opcode; 1596 hci_stack->last_cmd_opcode = opcode; 1597 packet[0] = opcode & 0xff; 1598 packet[1] = opcode >> 8; 1599 packet[2] = DEVICE_NAME_LEN; 1600 memset(&packet[3], 0, DEVICE_NAME_LEN); 1601 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1602 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1603 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1604 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1605 // expand '00:00:00:00:00:00' in name with bd_addr 1606 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1607 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1608 } 1609 1610 static void gap_run_set_eir_data(void){ 1611 hci_reserve_packet_buffer(); 1612 uint8_t * packet = hci_stack->hci_packet_buffer; 1613 // construct HCI Command in-place and send 1614 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1615 hci_stack->last_cmd_opcode = opcode; 1616 uint16_t offset = 0; 1617 packet[offset++] = opcode & 0xff; 1618 packet[offset++] = opcode >> 8; 1619 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1620 packet[offset++] = 0; // FEC not required 1621 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1622 if (hci_stack->eir_data){ 1623 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1624 ad_context_t context; 1625 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1626 uint8_t data_type = ad_iterator_get_data_type(&context); 1627 uint8_t size = ad_iterator_get_data_len(&context); 1628 const uint8_t *data = ad_iterator_get_data(&context); 1629 // copy item 1630 packet[offset++] = size + 1; 1631 packet[offset++] = data_type; 1632 memcpy(&packet[offset], data, size); 1633 // update name item 1634 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1635 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1636 } 1637 offset += size; 1638 } 1639 } else { 1640 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1641 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1642 packet[offset++] = bytes_to_copy + 1; 1643 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1644 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1645 // expand '00:00:00:00:00:00' in name with bd_addr 1646 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1647 } 1648 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1649 } 1650 1651 static void hci_run_gap_tasks_classic(void){ 1652 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1653 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1654 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1655 return; 1656 } 1657 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1658 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1659 gap_run_set_local_name(); 1660 return; 1661 } 1662 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1663 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1664 gap_run_set_eir_data(); 1665 return; 1666 } 1667 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1668 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1669 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1670 return; 1671 } 1672 // write page scan activity 1673 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1674 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1675 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1676 return; 1677 } 1678 // write page scan type 1679 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1680 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1681 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1682 return; 1683 } 1684 // write page timeout 1685 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1686 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1687 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1688 return; 1689 } 1690 // send scan enable 1691 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1692 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1693 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1694 return; 1695 } 1696 // send write scan activity 1697 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1698 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1699 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1700 return; 1701 } 1702 } 1703 #endif 1704 1705 #ifndef HAVE_HOST_CONTROLLER_API 1706 1707 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1708 if (!hci_stack->config) return 0; 1709 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1710 // Limit baud rate for Broadcom chipsets to 3 mbps 1711 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1712 baud_rate = 3000000; 1713 } 1714 return baud_rate; 1715 } 1716 1717 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1718 UNUSED(ds); 1719 1720 switch (hci_stack->substate){ 1721 case HCI_INIT_W4_SEND_RESET: 1722 log_info("Resend HCI Reset"); 1723 hci_stack->substate = HCI_INIT_SEND_RESET; 1724 hci_stack->num_cmd_packets = 1; 1725 hci_run(); 1726 break; 1727 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1728 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1729 if (hci_stack->hci_transport->reset_link){ 1730 hci_stack->hci_transport->reset_link(); 1731 } 1732 1733 /* fall through */ 1734 1735 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1736 log_info("Resend HCI Reset - CSR Warm Boot"); 1737 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1738 hci_stack->num_cmd_packets = 1; 1739 hci_run(); 1740 break; 1741 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1742 if (hci_stack->hci_transport->set_baudrate){ 1743 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1744 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1745 hci_stack->hci_transport->set_baudrate(baud_rate); 1746 } 1747 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1748 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1749 if (hci_stack->hci_transport->reset_link){ 1750 log_info("Link Reset"); 1751 hci_stack->hci_transport->reset_link(); 1752 } 1753 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1754 hci_run(); 1755 } 1756 break; 1757 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1758 // otherwise continue 1759 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1760 hci_send_cmd(&hci_read_local_supported_commands); 1761 break; 1762 default: 1763 break; 1764 } 1765 } 1766 #endif 1767 1768 static void hci_initializing_next_state(void){ 1769 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1770 } 1771 1772 static void hci_init_done(void){ 1773 // done. tell the app 1774 log_info("hci_init_done -> HCI_STATE_WORKING"); 1775 hci_stack->state = HCI_STATE_WORKING; 1776 hci_emit_state(); 1777 } 1778 1779 // assumption: hci_can_send_command_packet_now() == true 1780 static void hci_initializing_run(void){ 1781 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1782 1783 if (!hci_can_send_command_packet_now()) return; 1784 1785 #ifndef HAVE_HOST_CONTROLLER_API 1786 bool need_baud_change = hci_stack->config 1787 && hci_stack->chipset 1788 && hci_stack->chipset->set_baudrate_command 1789 && hci_stack->hci_transport->set_baudrate 1790 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1791 #endif 1792 1793 switch (hci_stack->substate){ 1794 case HCI_INIT_SEND_RESET: 1795 hci_state_reset(); 1796 1797 #ifndef HAVE_HOST_CONTROLLER_API 1798 // prepare reset if command complete not received in 100ms 1799 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1800 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1801 btstack_run_loop_add_timer(&hci_stack->timeout); 1802 #endif 1803 // send command 1804 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1805 hci_send_cmd(&hci_reset); 1806 break; 1807 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1808 hci_send_cmd(&hci_read_local_version_information); 1809 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1810 break; 1811 1812 #ifndef HAVE_HOST_CONTROLLER_API 1813 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1814 hci_state_reset(); 1815 // prepare reset if command complete not received in 100ms 1816 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1817 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1818 btstack_run_loop_add_timer(&hci_stack->timeout); 1819 // send command 1820 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1821 hci_send_cmd(&hci_reset); 1822 break; 1823 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1824 hci_state_reset(); 1825 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1826 hci_send_cmd(&hci_reset); 1827 break; 1828 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1829 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1830 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1831 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1832 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1833 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1834 break; 1835 } 1836 case HCI_INIT_SET_BD_ADDR: 1837 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1838 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1839 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1840 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1841 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1842 break; 1843 case HCI_INIT_SEND_READ_LOCAL_NAME: 1844 #ifdef ENABLE_CLASSIC 1845 hci_send_cmd(&hci_read_local_name); 1846 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1847 break; 1848 #endif 1849 /* fall through */ 1850 1851 case HCI_INIT_SEND_BAUD_CHANGE: 1852 if (need_baud_change) { 1853 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1854 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1855 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1856 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1857 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1858 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1859 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1860 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1861 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1862 btstack_run_loop_add_timer(&hci_stack->timeout); 1863 } 1864 break; 1865 } 1866 1867 /* fall through */ 1868 1869 case HCI_INIT_CUSTOM_INIT: 1870 // Custom initialization 1871 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1872 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1873 bool send_cmd = false; 1874 switch (hci_stack->chipset_result){ 1875 case BTSTACK_CHIPSET_VALID_COMMAND: 1876 send_cmd = true; 1877 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1878 break; 1879 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1880 send_cmd = true; 1881 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1882 log_info("CSR Warm Boot"); 1883 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1884 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1885 btstack_run_loop_add_timer(&hci_stack->timeout); 1886 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1887 && hci_stack->config 1888 && hci_stack->chipset 1889 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1890 && hci_stack->hci_transport->set_baudrate 1891 && hci_transport_uart_get_main_baud_rate()){ 1892 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1893 } else { 1894 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1895 } 1896 break; 1897 default: 1898 break; 1899 } 1900 1901 if (send_cmd){ 1902 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1903 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1904 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1905 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1906 break; 1907 } 1908 log_info("Init script done"); 1909 1910 // Init script download on Broadcom chipsets causes: 1911 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1912 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1913 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1914 1915 // - baud rate to reset, restore UART baud rate if needed 1916 if (need_baud_change) { 1917 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1918 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1919 hci_stack->hci_transport->set_baudrate(baud_rate); 1920 } 1921 1922 uint16_t bcm_delay_ms = 300; 1923 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1924 // -> Work around: wait here. 1925 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1926 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1927 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1928 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1929 btstack_run_loop_add_timer(&hci_stack->timeout); 1930 break; 1931 } 1932 } 1933 #endif 1934 /* fall through */ 1935 1936 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1937 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1938 hci_send_cmd(&hci_read_local_supported_commands); 1939 break; 1940 case HCI_INIT_READ_BD_ADDR: 1941 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1942 hci_send_cmd(&hci_read_bd_addr); 1943 break; 1944 case HCI_INIT_READ_BUFFER_SIZE: 1945 // only read buffer size if supported 1946 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1947 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1948 hci_send_cmd(&hci_read_buffer_size); 1949 break; 1950 } 1951 1952 /* fall through */ 1953 1954 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1955 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1956 hci_send_cmd(&hci_read_local_supported_features); 1957 break; 1958 1959 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1960 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1961 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1962 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1963 break; 1964 case HCI_INIT_HOST_BUFFER_SIZE: 1965 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1966 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1967 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1968 break; 1969 #endif 1970 1971 case HCI_INIT_SET_EVENT_MASK: 1972 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1973 if (hci_le_supported()){ 1974 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1975 } else { 1976 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1977 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1978 } 1979 break; 1980 1981 case HCI_INIT_SET_EVENT_MASK_2: 1982 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1983 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1984 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1985 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1986 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1987 // Encryption Change Event v2 - bit 25 1988 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1989 break; 1990 } 1991 1992 #ifdef ENABLE_CLASSIC 1993 /* fall through */ 1994 1995 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1996 if (hci_classic_supported() && gap_ssp_supported()){ 1997 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1998 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1999 break; 2000 } 2001 2002 /* fall through */ 2003 2004 case HCI_INIT_WRITE_INQUIRY_MODE: 2005 if (hci_classic_supported()){ 2006 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2007 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2008 break; 2009 } 2010 2011 /* fall through */ 2012 2013 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2014 // skip write secure connections host support if not supported or disabled 2015 if (hci_classic_supported() && hci_stack->secure_connections_enable 2016 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2017 hci_stack->secure_connections_active = true; 2018 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2019 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2020 break; 2021 } 2022 2023 /* fall through */ 2024 2025 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2026 // skip set min encryption key size 2027 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2028 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2029 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2030 break; 2031 } 2032 2033 #ifdef ENABLE_SCO_OVER_HCI 2034 /* fall through */ 2035 2036 // only sent if ENABLE_SCO_OVER_HCI is defined 2037 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2038 // skip write synchronous flow control if not supported 2039 if (hci_classic_supported() 2040 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2041 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2042 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2043 break; 2044 } 2045 /* fall through */ 2046 2047 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2048 // skip write default erroneous data reporting if not supported 2049 if (hci_classic_supported() 2050 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2051 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2052 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2053 break; 2054 } 2055 #endif 2056 2057 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2058 /* fall through */ 2059 2060 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2061 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2062 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2063 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2064 #ifdef ENABLE_SCO_OVER_HCI 2065 log_info("BCM: Route SCO data via HCI transport"); 2066 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2067 #endif 2068 #ifdef ENABLE_SCO_OVER_PCM 2069 log_info("BCM: Route SCO data via PCM interface"); 2070 #ifdef ENABLE_BCM_PCM_WBS 2071 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2072 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2073 #else 2074 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2075 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2076 #endif 2077 #endif 2078 break; 2079 } 2080 #endif 2081 2082 #ifdef ENABLE_SCO_OVER_PCM 2083 /* fall through */ 2084 2085 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2086 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2087 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2088 log_info("BCM: Config PCM interface for I2S"); 2089 #ifdef ENABLE_BCM_PCM_WBS 2090 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2091 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2092 #else 2093 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2094 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2095 #endif 2096 break; 2097 } 2098 #endif 2099 #endif 2100 2101 #ifdef ENABLE_BLE 2102 /* fall through */ 2103 2104 // LE INIT 2105 case HCI_INIT_LE_READ_BUFFER_SIZE: 2106 if (hci_le_supported()){ 2107 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2108 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2109 hci_send_cmd(&hci_le_read_buffer_size_v2); 2110 } else { 2111 hci_send_cmd(&hci_le_read_buffer_size); 2112 } 2113 break; 2114 } 2115 2116 /* fall through */ 2117 2118 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2119 // skip write le host if not supported (e.g. on LE only EM9301) 2120 if (hci_le_supported() 2121 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2122 // LE Supported Host = 1, Simultaneous Host = 0 2123 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2124 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2125 break; 2126 } 2127 2128 /* fall through */ 2129 2130 case HCI_INIT_LE_SET_EVENT_MASK: 2131 if (hci_le_supported()){ 2132 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2133 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2134 break; 2135 } 2136 #endif 2137 2138 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2139 /* fall through */ 2140 2141 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2142 if (hci_le_supported() 2143 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2144 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2145 hci_send_cmd(&hci_le_read_maximum_data_length); 2146 break; 2147 } 2148 2149 /* fall through */ 2150 2151 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2152 if (hci_le_supported() 2153 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2154 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2155 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2156 break; 2157 } 2158 #endif 2159 2160 #ifdef ENABLE_LE_CENTRAL 2161 /* fall through */ 2162 2163 case HCI_INIT_READ_WHITE_LIST_SIZE: 2164 if (hci_le_supported()){ 2165 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2166 hci_send_cmd(&hci_le_read_white_list_size); 2167 break; 2168 } 2169 2170 #endif 2171 2172 #ifdef ENABLE_LE_PERIPHERAL 2173 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2174 /* fall through */ 2175 2176 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2177 if (hci_extended_advertising_supported()){ 2178 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2179 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2180 break; 2181 } 2182 #endif 2183 #endif 2184 /* fall through */ 2185 2186 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2187 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2188 if (hci_le_supported()) { 2189 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2190 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2191 break; 2192 } 2193 #endif 2194 2195 /* fall through */ 2196 2197 case HCI_INIT_DONE: 2198 hci_stack->substate = HCI_INIT_DONE; 2199 // main init sequence complete 2200 #ifdef ENABLE_CLASSIC 2201 // check if initial Classic GAP Tasks are completed 2202 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2203 hci_run_gap_tasks_classic(); 2204 break; 2205 } 2206 #endif 2207 #ifdef ENABLE_BLE 2208 #ifdef ENABLE_LE_CENTRAL 2209 // check if initial LE GAP Tasks are completed 2210 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2211 hci_run_general_gap_le(); 2212 break; 2213 } 2214 #endif 2215 #endif 2216 hci_init_done(); 2217 break; 2218 2219 default: 2220 return; 2221 } 2222 } 2223 2224 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2225 bool command_completed = false; 2226 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2227 uint16_t opcode = little_endian_read_16(packet,3); 2228 if (opcode == hci_stack->last_cmd_opcode){ 2229 command_completed = true; 2230 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2231 } else { 2232 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2233 } 2234 } 2235 2236 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2237 uint8_t status = packet[2]; 2238 uint16_t opcode = little_endian_read_16(packet,4); 2239 if (opcode == hci_stack->last_cmd_opcode){ 2240 if (status){ 2241 command_completed = true; 2242 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2243 } else { 2244 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2245 } 2246 } else { 2247 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2248 } 2249 } 2250 #ifndef HAVE_HOST_CONTROLLER_API 2251 // Vendor == CSR 2252 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2253 // TODO: track actual command 2254 command_completed = true; 2255 } 2256 2257 // Vendor == Toshiba 2258 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2259 // TODO: track actual command 2260 command_completed = true; 2261 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2262 hci_stack->num_cmd_packets = 1; 2263 } 2264 #endif 2265 2266 return command_completed; 2267 } 2268 2269 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2270 2271 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2272 2273 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2274 2275 #ifndef HAVE_HOST_CONTROLLER_API 2276 2277 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2278 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2279 // 2280 // HCI Reset 2281 // Timeout 100 ms 2282 // HCI Reset 2283 // Command Complete Reset 2284 // HCI Read Local Version Information 2285 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2286 // hang... 2287 // 2288 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2289 if (!command_completed 2290 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2291 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2292 2293 uint16_t opcode = little_endian_read_16(packet,3); 2294 if (opcode == hci_reset.opcode){ 2295 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2296 return; 2297 } 2298 } 2299 2300 // CSR & H5 2301 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2302 if (!command_completed 2303 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2304 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2305 2306 uint16_t opcode = little_endian_read_16(packet,3); 2307 if (opcode == hci_reset.opcode){ 2308 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2309 return; 2310 } 2311 } 2312 2313 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2314 // fix: Correct substate and behave as command below 2315 if (command_completed){ 2316 switch (hci_stack->substate){ 2317 case HCI_INIT_SEND_RESET: 2318 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2319 break; 2320 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2321 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2322 break; 2323 default: 2324 break; 2325 } 2326 } 2327 2328 #endif 2329 2330 if (!command_completed) return; 2331 2332 bool need_baud_change = false; 2333 bool need_addr_change = false; 2334 2335 #ifndef HAVE_HOST_CONTROLLER_API 2336 need_baud_change = hci_stack->config 2337 && hci_stack->chipset 2338 && hci_stack->chipset->set_baudrate_command 2339 && hci_stack->hci_transport->set_baudrate 2340 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2341 2342 need_addr_change = hci_stack->custom_bd_addr_set 2343 && hci_stack->chipset 2344 && hci_stack->chipset->set_bd_addr_command; 2345 #endif 2346 2347 switch(hci_stack->substate){ 2348 2349 #ifndef HAVE_HOST_CONTROLLER_API 2350 case HCI_INIT_SEND_RESET: 2351 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2352 // fix: just correct substate and behave as command below 2353 2354 /* fall through */ 2355 #endif 2356 2357 case HCI_INIT_W4_SEND_RESET: 2358 btstack_run_loop_remove_timer(&hci_stack->timeout); 2359 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2360 return; 2361 2362 #ifndef HAVE_HOST_CONTROLLER_API 2363 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2364 // for STLC2500D, baud rate change already happened. 2365 // for others, baud rate gets changed now 2366 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2367 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2368 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2369 hci_stack->hci_transport->set_baudrate(baud_rate); 2370 } 2371 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2372 return; 2373 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2374 btstack_run_loop_remove_timer(&hci_stack->timeout); 2375 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2376 return; 2377 case HCI_INIT_W4_CUSTOM_INIT: 2378 // repeat custom init 2379 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2380 return; 2381 #endif 2382 2383 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2384 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2385 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2386 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2387 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2388 return; 2389 } 2390 if (need_addr_change){ 2391 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2392 return; 2393 } 2394 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2395 return; 2396 #ifndef HAVE_HOST_CONTROLLER_API 2397 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2398 if (need_baud_change){ 2399 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2400 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2401 hci_stack->hci_transport->set_baudrate(baud_rate); 2402 } 2403 if (need_addr_change){ 2404 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2405 return; 2406 } 2407 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2408 return; 2409 case HCI_INIT_W4_SET_BD_ADDR: 2410 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2411 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2412 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2413 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2414 return; 2415 } 2416 // skipping st warm boot 2417 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2418 return; 2419 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2420 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2421 return; 2422 #endif 2423 2424 case HCI_INIT_DONE: 2425 // set state if we came here by fall through 2426 hci_stack->substate = HCI_INIT_DONE; 2427 return; 2428 2429 default: 2430 break; 2431 } 2432 hci_initializing_next_state(); 2433 } 2434 2435 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2436 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2437 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2438 // check if we have been aware of the HCI connection 2439 switch (conn->state){ 2440 case SENT_CREATE_CONNECTION: 2441 case RECEIVED_CONNECTION_REQUEST: 2442 case ACCEPTED_CONNECTION_REQUEST: 2443 break; 2444 default: 2445 return; 2446 } 2447 2448 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2449 bd_addr_t bd_address; 2450 (void)memcpy(&bd_address, conn->address, 6); 2451 2452 #ifdef ENABLE_CLASSIC 2453 // cache needed data 2454 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2455 #endif 2456 2457 // connection failed, remove entry 2458 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2459 btstack_memory_hci_connection_free( conn ); 2460 2461 #ifdef ENABLE_CLASSIC 2462 // notify client if dedicated bonding 2463 if (notify_dedicated_bonding_failed){ 2464 log_info("hci notify_dedicated_bonding_failed"); 2465 hci_emit_dedicated_bonding_result(bd_address, status); 2466 } 2467 2468 // if authentication error, also delete link key 2469 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2470 gap_drop_link_key_for_bd_addr(bd_address); 2471 } 2472 #else 2473 UNUSED(status); 2474 #endif 2475 } 2476 2477 #ifdef ENABLE_CLASSIC 2478 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2479 // SSP Controller 2480 if (features[6] & (1 << 3)){ 2481 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2482 } 2483 // eSCO 2484 if (features[3] & (1<<7)){ 2485 conn->remote_supported_features[0] |= 1; 2486 } 2487 // Extended features 2488 if (features[7] & (1<<7)){ 2489 conn->remote_supported_features[0] |= 2; 2490 } 2491 } 2492 2493 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2494 // SSP Host 2495 if (features[0] & (1 << 0)){ 2496 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2497 } 2498 // SC Host 2499 if (features[0] & (1 << 3)){ 2500 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2501 } 2502 } 2503 2504 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2505 // SC Controller 2506 if (features[1] & (1 << 0)){ 2507 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2508 } 2509 } 2510 2511 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2512 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2513 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2514 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2515 if (conn->bonding_flags & BONDING_DEDICATED){ 2516 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2517 } 2518 } 2519 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2520 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2521 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2522 } 2523 2524 #endif 2525 2526 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2527 // handle BT initialization 2528 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2529 hci_initializing_event_handler(packet, size); 2530 } 2531 2532 // help with BT sleep 2533 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2534 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2535 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2536 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2537 hci_initializing_next_state(); 2538 } 2539 } 2540 2541 #ifdef ENABLE_CLASSIC 2542 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2543 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2544 conn->encryption_key_size = encryption_key_size; 2545 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2546 2547 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2548 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2549 conn->bonding_flags &= ~BONDING_DEDICATED; 2550 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2551 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2552 return; 2553 } 2554 2555 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2556 conn->requested_security_level = LEVEL_0; 2557 hci_emit_security_level(conn->con_handle, security_level); 2558 return; 2559 } 2560 2561 // Request remote features if not already done 2562 hci_trigger_remote_features_for_connection(conn); 2563 2564 // Request Authentication if not already done 2565 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2566 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2567 } 2568 #endif 2569 2570 static void hci_store_local_supported_commands(const uint8_t * packet){ 2571 // create mapping table 2572 #define X(name, offset, bit) { offset, bit }, 2573 static struct { 2574 uint8_t byte_offset; 2575 uint8_t bit_position; 2576 } supported_hci_commands_map [] = { 2577 SUPPORTED_HCI_COMMANDS 2578 }; 2579 #undef X 2580 2581 // create names for debug purposes 2582 #ifdef ENABLE_LOG_DEBUG 2583 #define X(name, offset, bit) #name, 2584 static const char * command_names[] = { 2585 SUPPORTED_HCI_COMMANDS 2586 }; 2587 #undef X 2588 #endif 2589 2590 hci_stack->local_supported_commands = 0; 2591 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2592 uint16_t i; 2593 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2594 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2595 #ifdef ENABLE_LOG_DEBUG 2596 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); 2597 #else 2598 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2599 #endif 2600 hci_stack->local_supported_commands |= (1LU << i); 2601 } 2602 } 2603 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2604 } 2605 2606 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2607 UNUSED(size); 2608 2609 uint16_t manufacturer; 2610 #ifdef ENABLE_CLASSIC 2611 hci_con_handle_t handle; 2612 hci_connection_t * conn; 2613 #endif 2614 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2615 uint8_t status; 2616 #endif 2617 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2618 le_audio_cig_t * cig; 2619 #endif 2620 2621 // get num cmd packets - limit to 1 to reduce complexity 2622 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2623 2624 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2625 switch (opcode){ 2626 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2627 if (packet[5]) break; 2628 // terminate, name 248 chars 2629 packet[6+248] = 0; 2630 log_info("local name: %s", &packet[6]); 2631 break; 2632 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2633 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2634 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2635 uint16_t acl_len = little_endian_read_16(packet, 6); 2636 uint16_t sco_len = packet[8]; 2637 2638 // determine usable ACL/SCO payload size 2639 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2640 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2641 2642 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2643 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2644 2645 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2646 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2647 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2648 } 2649 break; 2650 case HCI_OPCODE_HCI_READ_RSSI: 2651 if (packet[5] == ERROR_CODE_SUCCESS){ 2652 uint8_t event[5]; 2653 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2654 event[1] = 3; 2655 (void)memcpy(&event[2], &packet[6], 3); 2656 hci_emit_event(event, sizeof(event), 1); 2657 } 2658 break; 2659 #ifdef ENABLE_BLE 2660 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2661 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2662 hci_stack->le_iso_packets_total_num = packet[11]; 2663 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2664 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2665 2666 /* fall through */ 2667 2668 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2669 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2670 hci_stack->le_acl_packets_total_num = packet[8]; 2671 // determine usable ACL payload size 2672 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2673 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2674 } 2675 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); 2676 break; 2677 #endif 2678 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2679 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2680 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2681 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2682 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); 2683 break; 2684 #endif 2685 #ifdef ENABLE_LE_CENTRAL 2686 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2687 hci_stack->le_whitelist_capacity = packet[6]; 2688 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2689 break; 2690 #endif 2691 #ifdef ENABLE_LE_PERIPHERAL 2692 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2693 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2694 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2695 break; 2696 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2697 if (hci_stack->le_advertising_set_in_current_command != 0) { 2698 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2699 hci_stack->le_advertising_set_in_current_command = 0; 2700 if (advertising_set == NULL) break; 2701 uint8_t adv_status = packet[6]; 2702 uint8_t tx_power = packet[7]; 2703 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 }; 2704 if (adv_status == 0){ 2705 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2706 } 2707 hci_emit_event(event, sizeof(event), 1); 2708 } 2709 break; 2710 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2711 if (hci_stack->le_advertising_set_in_current_command != 0) { 2712 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2713 hci_stack->le_advertising_set_in_current_command = 0; 2714 if (advertising_set == NULL) break; 2715 uint8_t adv_status = packet[5]; 2716 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2717 if (adv_status == 0){ 2718 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2719 } 2720 hci_emit_event(event, sizeof(event), 1); 2721 } 2722 break; 2723 #endif 2724 #endif 2725 case HCI_OPCODE_HCI_READ_BD_ADDR: 2726 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2727 log_info("Local Address, Status: 0x%02x: Addr: %s", packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack->local_bd_addr)); 2728 #ifdef ENABLE_CLASSIC 2729 if (hci_stack->link_key_db){ 2730 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2731 } 2732 #endif 2733 break; 2734 #ifdef ENABLE_CLASSIC 2735 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2736 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2737 break; 2738 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2739 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2740 if (status == ERROR_CODE_SUCCESS) { 2741 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2742 } else { 2743 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2744 } 2745 break; 2746 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2747 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2748 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2749 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2750 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2751 hci_emit_event(event, sizeof(event), 1); 2752 } 2753 break; 2754 #endif 2755 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2756 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2757 2758 #ifdef ENABLE_CLASSIC 2759 // determine usable ACL packet types based on host buffer size and supported features 2760 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2761 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2762 #endif 2763 // Classic/LE 2764 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2765 break; 2766 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2767 manufacturer = little_endian_read_16(packet, 10); 2768 // map Cypress to Broadcom 2769 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2770 log_info("Treat Cypress as Broadcom"); 2771 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2772 little_endian_store_16(packet, 10, manufacturer); 2773 } 2774 hci_stack->manufacturer = manufacturer; 2775 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2776 break; 2777 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2778 hci_store_local_supported_commands(packet); 2779 break; 2780 #ifdef ENABLE_CLASSIC 2781 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2782 if (packet[5]) return; 2783 hci_stack->synchronous_flow_control_enabled = 1; 2784 break; 2785 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2786 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2787 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2788 conn = hci_connection_for_handle(handle); 2789 if (conn != NULL) { 2790 uint8_t key_size = 0; 2791 if (status == 0){ 2792 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2793 log_info("Handle %04x key Size: %u", handle, key_size); 2794 } else { 2795 key_size = 1; 2796 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2797 } 2798 hci_handle_read_encryption_key_size_complete(conn, key_size); 2799 } 2800 break; 2801 // assert pairing complete event is emitted. 2802 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2803 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2804 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2805 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2806 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2807 // lookup connection by gap pairing addr 2808 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2809 if (conn == NULL) break; 2810 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2811 break; 2812 2813 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2814 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2815 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2816 uint8_t event[67]; 2817 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2818 event[1] = 65; 2819 (void)memset(&event[2], 0, 65); 2820 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2821 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2822 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2823 event[2] = 3; 2824 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2825 } else { 2826 event[2] = 1; 2827 } 2828 } 2829 hci_emit_event(event, sizeof(event), 0); 2830 break; 2831 } 2832 2833 // note: only needed if user does not provide OOB data 2834 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2835 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2836 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2837 if (conn == NULL) break; 2838 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2839 break; 2840 #endif 2841 #endif 2842 #ifdef ENABLE_BLE 2843 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2844 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2845 // lookup CIG 2846 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2847 if (cig != NULL){ 2848 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2849 uint8_t i = 0; 2850 if (status == ERROR_CODE_SUCCESS){ 2851 // assign CIS handles to pre-allocated CIS 2852 btstack_linked_list_iterator_t it; 2853 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2854 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2855 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2856 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2857 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2858 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2859 iso_stream->con_handle = cis_handle; 2860 cig->cis_con_handles[i] = cis_handle; 2861 i++; 2862 } 2863 } 2864 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2865 hci_emit_cig_created(cig, status); 2866 } else { 2867 hci_emit_cig_created(cig, status); 2868 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2869 } 2870 } 2871 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2872 break; 2873 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2874 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2875 if (status != ERROR_CODE_SUCCESS){ 2876 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2877 } 2878 break; 2879 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2880 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2881 if (status != ERROR_CODE_SUCCESS){ 2882 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2883 } 2884 break; 2885 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2886 // lookup BIG by state 2887 btstack_linked_list_iterator_t it; 2888 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2889 while (btstack_linked_list_iterator_has_next(&it)) { 2890 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2891 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2892 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2893 if (status == ERROR_CODE_SUCCESS){ 2894 big->state_vars.next_bis++; 2895 if (big->state_vars.next_bis == big->num_bis){ 2896 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2897 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2898 } else { 2899 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2900 } 2901 } else { 2902 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2903 big->state_vars.status = status; 2904 } 2905 return; 2906 } 2907 } 2908 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2909 while (btstack_linked_list_iterator_has_next(&it)) { 2910 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2911 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2912 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2913 if (status == ERROR_CODE_SUCCESS){ 2914 big_sync->state_vars.next_bis++; 2915 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2916 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2917 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2918 } else { 2919 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2920 } 2921 } else { 2922 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2923 big_sync->state_vars.status = status; 2924 } 2925 return; 2926 } 2927 } 2928 // Lookup CIS via active group operation 2929 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2930 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2931 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2932 2933 // lookup CIS by state 2934 btstack_linked_list_iterator_t it; 2935 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2936 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2937 while (btstack_linked_list_iterator_has_next(&it)){ 2938 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2939 handle = iso_stream->con_handle; 2940 switch (iso_stream->state){ 2941 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2942 if (status != ERROR_CODE_SUCCESS){ 2943 hci_iso_stream_finalize(iso_stream); 2944 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2945 break; 2946 } 2947 if (iso_stream->max_sdu_c_to_p > 0){ 2948 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2949 } else { 2950 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2951 } 2952 break; 2953 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2954 if (status != ERROR_CODE_SUCCESS){ 2955 hci_iso_stream_finalize(iso_stream); 2956 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2957 break; 2958 } 2959 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2960 break; 2961 default: 2962 break; 2963 } 2964 } 2965 } else { 2966 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2967 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2968 if (cig != NULL) { 2969 // emit cis created if all ISO Paths have been created 2970 // assume we are central 2971 uint8_t cis_index = cig->state_vars.next_cis >> 1; 2972 uint8_t cis_direction = cig->state_vars.next_cis & 1; 2973 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 2974 // if outgoing has been setup, or incoming was setup but outgoing not required 2975 if ((cis_direction == 1) || (outgoing_needed == false)){ 2976 hci_emit_cis_created(cig->cig_id, cig->cis_con_handles[cis_index], status); 2977 } 2978 // next state 2979 cig->state_vars.next_cis++; 2980 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 2981 } 2982 } 2983 } 2984 break; 2985 } 2986 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2987 // lookup BIG by state 2988 btstack_linked_list_iterator_t it; 2989 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2990 while (btstack_linked_list_iterator_has_next(&it)) { 2991 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2992 uint8_t big_handle = big_sync->big_handle; 2993 switch (big_sync->state){ 2994 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 2995 btstack_linked_list_iterator_remove(&it); 2996 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 2997 return; 2998 default: 2999 btstack_linked_list_iterator_remove(&it); 3000 hci_emit_big_sync_stopped(big_handle); 3001 return; 3002 } 3003 } 3004 break; 3005 } 3006 #endif 3007 #endif 3008 default: 3009 break; 3010 } 3011 } 3012 3013 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3014 UNUSED(size); 3015 3016 // get num cmd packets - limit to 1 to reduce complexity 3017 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3018 3019 // get opcode and command status 3020 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3021 3022 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3023 uint8_t status = hci_event_command_status_get_status(packet); 3024 #endif 3025 3026 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3027 bd_addr_type_t addr_type; 3028 #endif 3029 3030 switch (opcode){ 3031 #ifdef ENABLE_CLASSIC 3032 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3033 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3034 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3035 #endif 3036 #ifdef ENABLE_LE_CENTRAL 3037 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3038 #endif 3039 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3040 addr_type = hci_stack->outgoing_addr_type; 3041 3042 // reset outgoing address info 3043 memset(hci_stack->outgoing_addr, 0, 6); 3044 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3045 3046 // on error 3047 if (status != ERROR_CODE_SUCCESS){ 3048 #ifdef ENABLE_LE_CENTRAL 3049 if (hci_is_le_connection_type(addr_type)){ 3050 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3051 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3052 } 3053 #endif 3054 // error => outgoing connection failed 3055 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 3056 if (conn != NULL){ 3057 hci_handle_connection_failed(conn, status); 3058 } 3059 } 3060 break; 3061 #endif 3062 #ifdef ENABLE_CLASSIC 3063 case HCI_OPCODE_HCI_INQUIRY: 3064 if (status == ERROR_CODE_SUCCESS) { 3065 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3066 } else { 3067 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3068 } 3069 break; 3070 #endif 3071 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3072 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3073 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3074 if (status == ERROR_CODE_SUCCESS){ 3075 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3076 } else { 3077 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3078 } 3079 break; 3080 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3081 default: 3082 break; 3083 } 3084 } 3085 3086 #ifdef ENABLE_BLE 3087 static void event_handle_le_connection_complete(const uint8_t * packet){ 3088 bd_addr_t addr; 3089 bd_addr_type_t addr_type; 3090 hci_connection_t * conn; 3091 3092 // Connection management 3093 reverse_bd_addr(&packet[8], addr); 3094 addr_type = (bd_addr_type_t)packet[7]; 3095 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3096 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3097 3098 #ifdef ENABLE_LE_CENTRAL 3099 // handle error: error is reported only to the initiator -> outgoing connection 3100 if (packet[3]){ 3101 3102 // handle cancelled outgoing connection 3103 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3104 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3105 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3106 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3107 // reset state 3108 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3109 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3110 // get outgoing connection conn struct for direct connect 3111 conn = gap_get_outgoing_connection(); 3112 } 3113 3114 // outgoing le connection establishment is done 3115 if (conn){ 3116 // remove entry 3117 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3118 btstack_memory_hci_connection_free( conn ); 3119 } 3120 return; 3121 } 3122 #endif 3123 3124 // on success, both hosts receive connection complete event 3125 if (packet[6] == HCI_ROLE_MASTER){ 3126 #ifdef ENABLE_LE_CENTRAL 3127 // if we're master on an le connection, it was an outgoing connection and we're done with it 3128 // note: no hci_connection_t object exists yet for connect with whitelist 3129 if (hci_is_le_connection_type(addr_type)){ 3130 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3131 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3132 } 3133 #endif 3134 } else { 3135 #ifdef ENABLE_LE_PERIPHERAL 3136 // if we're slave, it was an incoming connection, advertisements have stopped 3137 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3138 #endif 3139 } 3140 3141 // LE connections are auto-accepted, so just create a connection if there isn't one already 3142 if (!conn){ 3143 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3144 } 3145 3146 // no memory, sorry. 3147 if (!conn){ 3148 return; 3149 } 3150 3151 conn->state = OPEN; 3152 conn->role = packet[6]; 3153 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3154 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3155 3156 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3157 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3158 3159 #ifdef ENABLE_LE_PERIPHERAL 3160 if (packet[6] == HCI_ROLE_SLAVE){ 3161 hci_update_advertisements_enabled_for_current_roles(); 3162 } 3163 #endif 3164 3165 // init unenhanced att bearer mtu 3166 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3167 conn->att_connection.mtu_exchanged = false; 3168 3169 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3170 3171 // restart timer 3172 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3173 // btstack_run_loop_add_timer(&conn->timeout); 3174 3175 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3176 3177 hci_emit_nr_connections_changed(); 3178 } 3179 #endif 3180 3181 #ifdef ENABLE_CLASSIC 3182 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){ 3183 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3184 // LEVEL_4 is tested by l2cap 3185 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3186 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3187 if (level >= LEVEL_3){ 3188 // MITM not possible without keyboard or display 3189 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3190 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3191 3192 // MITM possible if one side has keyboard and the other has keyboard or display 3193 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3194 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3195 3196 // MITM not possible if one side has only display and other side has no keyboard 3197 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3198 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3199 } 3200 // LEVEL 2 requires SSP, which is a given 3201 return true; 3202 } 3203 3204 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3205 // get requested security level 3206 gap_security_level_t requested_security_level = conn->requested_security_level; 3207 if (hci_stack->gap_secure_connections_only_mode){ 3208 requested_security_level = LEVEL_4; 3209 } 3210 3211 // assess security: LEVEL 4 requires SC 3212 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3213 if ((requested_security_level == LEVEL_4) && 3214 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3215 !hci_remote_sc_enabled(conn)){ 3216 log_info("Level 4 required, but SC not supported -> abort"); 3217 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3218 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3219 return; 3220 } 3221 3222 // assess security based on io capabilities 3223 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3224 // responder: fully validate io caps of both sides as well as OOB data 3225 bool security_possible = false; 3226 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3227 3228 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3229 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3230 // so we merge the OOB data availability 3231 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3232 if (conn->classic_oob_c_192 != NULL){ 3233 have_oob_data |= 1; 3234 } 3235 if (conn->classic_oob_c_256 != NULL){ 3236 have_oob_data |= 2; 3237 } 3238 // for up to Level 3, either P-192 as well as P-256 will do 3239 // 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 3240 // if remote does not SC, we should not receive P-256 data either 3241 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3242 security_possible = true; 3243 } 3244 // for Level 4, P-256 is needed 3245 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3246 security_possible = true; 3247 } 3248 #endif 3249 3250 if (security_possible == false){ 3251 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3252 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3253 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3254 return; 3255 } 3256 } else { 3257 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3258 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3259 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3260 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3261 log_info("Level 3+ required, but no input/output -> abort"); 3262 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3263 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3264 return; 3265 } 3266 #endif 3267 #endif 3268 } 3269 3270 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3271 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3272 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3273 } else { 3274 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3275 } 3276 #endif 3277 } 3278 3279 #endif 3280 3281 static void event_handler(uint8_t *packet, uint16_t size){ 3282 3283 uint16_t event_length = packet[1]; 3284 3285 // assert packet is complete 3286 if (size != (event_length + 2u)){ 3287 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3288 return; 3289 } 3290 3291 hci_con_handle_t handle; 3292 hci_connection_t * conn; 3293 int i; 3294 3295 #ifdef ENABLE_CLASSIC 3296 hci_link_type_t link_type; 3297 bd_addr_t addr; 3298 bd_addr_type_t addr_type; 3299 #endif 3300 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3301 hci_iso_stream_t * iso_stream; 3302 le_audio_big_t * big; 3303 le_audio_big_sync_t * big_sync; 3304 #endif 3305 3306 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3307 3308 switch (hci_event_packet_get_type(packet)) { 3309 3310 case HCI_EVENT_COMMAND_COMPLETE: 3311 handle_command_complete_event(packet, size); 3312 break; 3313 3314 case HCI_EVENT_COMMAND_STATUS: 3315 handle_command_status_event(packet, size); 3316 break; 3317 3318 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3319 if (size < 3) return; 3320 uint16_t num_handles = packet[2]; 3321 if (size != (3u + num_handles * 4u)) return; 3322 #ifdef ENABLE_CLASSIC 3323 bool notify_sco = false; 3324 #endif 3325 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3326 bool notify_iso = false; 3327 #endif 3328 uint16_t offset = 3; 3329 for (i=0; i<num_handles;i++){ 3330 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3331 offset += 2u; 3332 uint16_t num_packets = little_endian_read_16(packet, offset); 3333 offset += 2u; 3334 3335 conn = hci_connection_for_handle(handle); 3336 if (conn != NULL) { 3337 3338 if (conn->num_packets_sent >= num_packets) { 3339 conn->num_packets_sent -= num_packets; 3340 } else { 3341 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3342 conn->num_packets_sent = 0; 3343 } 3344 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3345 #ifdef ENABLE_CLASSIC 3346 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3347 notify_sco = true; 3348 } 3349 #endif 3350 } 3351 3352 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3353 hci_controller_dump_packets(); 3354 #endif 3355 3356 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3357 if (conn == NULL){ 3358 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3359 if (iso_stream != NULL){ 3360 if (iso_stream->num_packets_sent >= num_packets) { 3361 iso_stream->num_packets_sent -= num_packets; 3362 } else { 3363 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3364 iso_stream->num_packets_sent = 0; 3365 } 3366 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3367 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3368 if (big != NULL){ 3369 big->num_completed_timestamp_current_valid = true; 3370 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3371 } 3372 } 3373 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3374 num_packets, handle, iso_stream->num_packets_sent); 3375 notify_iso = true; 3376 } 3377 } 3378 #endif 3379 } 3380 3381 #ifdef ENABLE_CLASSIC 3382 if (notify_sco){ 3383 hci_notify_if_sco_can_send_now(); 3384 } 3385 #endif 3386 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3387 if (notify_iso){ 3388 hci_iso_notify_can_send_now(); 3389 } 3390 #endif 3391 break; 3392 } 3393 3394 #ifdef ENABLE_CLASSIC 3395 case HCI_EVENT_FLUSH_OCCURRED: 3396 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3397 handle = hci_event_flush_occurred_get_handle(packet); 3398 conn = hci_connection_for_handle(handle); 3399 if (conn) { 3400 log_info("Flush occurred, disconnect 0x%04x", handle); 3401 conn->state = SEND_DISCONNECT; 3402 } 3403 break; 3404 3405 case HCI_EVENT_INQUIRY_COMPLETE: 3406 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3407 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3408 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3409 hci_emit_event(event, sizeof(event), 1); 3410 } 3411 break; 3412 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3413 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3414 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3415 } 3416 break; 3417 case HCI_EVENT_CONNECTION_REQUEST: 3418 reverse_bd_addr(&packet[2], addr); 3419 link_type = (hci_link_type_t) packet[11]; 3420 3421 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3422 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3423 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3424 bd_addr_copy(hci_stack->decline_addr, addr); 3425 break; 3426 } 3427 3428 if (hci_stack->gap_classic_accept_callback != NULL){ 3429 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3430 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3431 bd_addr_copy(hci_stack->decline_addr, addr); 3432 break; 3433 } 3434 } 3435 3436 // TODO: eval COD 8-10 3437 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3438 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3439 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3440 if (!conn) { 3441 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3442 } 3443 if (!conn) { 3444 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3445 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3446 bd_addr_copy(hci_stack->decline_addr, addr); 3447 hci_run(); 3448 // avoid event to higher layer 3449 return; 3450 } 3451 conn->role = HCI_ROLE_SLAVE; 3452 conn->state = RECEIVED_CONNECTION_REQUEST; 3453 // store info about eSCO 3454 if (link_type == HCI_LINK_TYPE_ESCO){ 3455 conn->remote_supported_features[0] |= 1; 3456 } 3457 hci_run(); 3458 break; 3459 3460 case HCI_EVENT_CONNECTION_COMPLETE: 3461 // Connection management 3462 reverse_bd_addr(&packet[5], addr); 3463 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3464 addr_type = BD_ADDR_TYPE_ACL; 3465 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3466 if (conn) { 3467 switch (conn->state){ 3468 // expected states 3469 case ACCEPTED_CONNECTION_REQUEST: 3470 case SENT_CREATE_CONNECTION: 3471 break; 3472 // unexpected state -> ignore 3473 default: 3474 // don't forward event to app 3475 return; 3476 } 3477 if (!packet[2]){ 3478 conn->state = OPEN; 3479 conn->con_handle = little_endian_read_16(packet, 3); 3480 3481 // trigger write supervision timeout if we're master 3482 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3483 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3484 } 3485 3486 // trigger write automatic flush timeout 3487 if (hci_stack->automatic_flush_timeout != 0){ 3488 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3489 } 3490 3491 // restart timer 3492 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3493 btstack_run_loop_add_timer(&conn->timeout); 3494 3495 // trigger remote features for dedicated bonding 3496 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3497 hci_trigger_remote_features_for_connection(conn); 3498 } 3499 3500 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3501 3502 hci_emit_nr_connections_changed(); 3503 } else { 3504 // connection failed 3505 hci_handle_connection_failed(conn, packet[2]); 3506 } 3507 } 3508 break; 3509 3510 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3511 reverse_bd_addr(&packet[5], addr); 3512 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3513 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3514 btstack_assert(conn != NULL); 3515 3516 if (packet[2] != ERROR_CODE_SUCCESS){ 3517 // connection failed, remove entry 3518 hci_handle_connection_failed(conn, packet[2]); 3519 break; 3520 } 3521 3522 conn->state = OPEN; 3523 conn->con_handle = little_endian_read_16(packet, 3); 3524 3525 #ifdef ENABLE_SCO_OVER_HCI 3526 // update SCO 3527 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3528 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3529 } 3530 // trigger can send now 3531 if (hci_have_usb_transport()){ 3532 hci_stack->sco_can_send_now = true; 3533 } 3534 #endif 3535 #ifdef HAVE_SCO_TRANSPORT 3536 // configure sco transport 3537 if (hci_stack->sco_transport != NULL){ 3538 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3539 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3540 } 3541 #endif 3542 break; 3543 3544 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3545 handle = little_endian_read_16(packet, 3); 3546 conn = hci_connection_for_handle(handle); 3547 if (!conn) break; 3548 if (!packet[2]){ 3549 const uint8_t * features = &packet[5]; 3550 hci_handle_remote_features_page_0(conn, features); 3551 3552 // read extended features if possible 3553 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3554 && ((conn->remote_supported_features[0] & 2) != 0)) { 3555 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3556 break; 3557 } 3558 } 3559 hci_handle_remote_features_received(conn); 3560 break; 3561 3562 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3563 handle = little_endian_read_16(packet, 3); 3564 conn = hci_connection_for_handle(handle); 3565 if (!conn) break; 3566 // status = ok, page = 1 3567 if (!packet[2]) { 3568 uint8_t page_number = packet[5]; 3569 uint8_t maximum_page_number = packet[6]; 3570 const uint8_t * features = &packet[7]; 3571 bool done = false; 3572 switch (page_number){ 3573 case 1: 3574 hci_handle_remote_features_page_1(conn, features); 3575 if (maximum_page_number >= 2){ 3576 // get Secure Connections (Controller) from Page 2 if available 3577 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3578 } else { 3579 // otherwise, assume SC (Controller) == SC (Host) 3580 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3581 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3582 } 3583 done = true; 3584 } 3585 break; 3586 case 2: 3587 hci_handle_remote_features_page_2(conn, features); 3588 done = true; 3589 break; 3590 default: 3591 break; 3592 } 3593 if (!done) break; 3594 } 3595 hci_handle_remote_features_received(conn); 3596 break; 3597 3598 case HCI_EVENT_LINK_KEY_REQUEST: 3599 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3600 hci_event_link_key_request_get_bd_addr(packet, addr); 3601 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3602 if (!conn) break; 3603 3604 // lookup link key in db if not cached 3605 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3606 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3607 } 3608 3609 // response sent by hci_run() 3610 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3611 #endif 3612 break; 3613 3614 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3615 hci_event_link_key_request_get_bd_addr(packet, addr); 3616 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3617 if (!conn) break; 3618 3619 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3620 3621 // CVE-2020-26555: ignore NULL link key 3622 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3623 if (btstack_is_null(&packet[8], 16)) break; 3624 3625 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3626 // Change Connection Encryption keeps link key type 3627 if (link_key_type != CHANGED_COMBINATION_KEY){ 3628 conn->link_key_type = link_key_type; 3629 } 3630 3631 // cache link key. link keys stored in little-endian format for legacy reasons 3632 memcpy(&conn->link_key, &packet[8], 16); 3633 3634 // only store link key: 3635 // - if bondable enabled 3636 if (hci_stack->bondable == false) break; 3637 // - if security level sufficient 3638 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3639 // - for SSP, also check if remote side requested bonding as well 3640 if (conn->link_key_type != COMBINATION_KEY){ 3641 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3642 if (!remote_bonding){ 3643 break; 3644 } 3645 } 3646 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3647 break; 3648 } 3649 3650 case HCI_EVENT_PIN_CODE_REQUEST: 3651 hci_event_pin_code_request_get_bd_addr(packet, addr); 3652 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3653 if (!conn) break; 3654 3655 hci_pairing_started(conn, false); 3656 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3657 if (!hci_stack->bondable ){ 3658 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3659 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3660 hci_run(); 3661 return; 3662 } 3663 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3664 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3665 log_info("Level 4 required, but SC not supported -> abort"); 3666 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3667 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3668 hci_run(); 3669 return; 3670 } 3671 break; 3672 3673 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3674 hci_event_io_capability_response_get_bd_addr(packet, addr); 3675 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3676 if (!conn) break; 3677 3678 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3679 hci_pairing_started(conn, true); 3680 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3681 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3682 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3683 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3684 #endif 3685 break; 3686 3687 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3688 hci_event_io_capability_response_get_bd_addr(packet, addr); 3689 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3690 if (!conn) break; 3691 3692 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3693 hci_connection_timestamp(conn); 3694 hci_pairing_started(conn, true); 3695 break; 3696 3697 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3698 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3699 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3700 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3701 if (!conn) break; 3702 3703 hci_connection_timestamp(conn); 3704 3705 hci_pairing_started(conn, true); 3706 3707 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3708 break; 3709 #endif 3710 3711 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3712 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3713 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3714 if (!conn) break; 3715 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3716 if (hci_stack->ssp_auto_accept){ 3717 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3718 }; 3719 } else { 3720 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3721 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3722 // don't forward event to app 3723 hci_run(); 3724 return; 3725 } 3726 break; 3727 3728 case HCI_EVENT_USER_PASSKEY_REQUEST: 3729 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3730 if (hci_stack->ssp_auto_accept){ 3731 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3732 }; 3733 break; 3734 3735 case HCI_EVENT_MODE_CHANGE: 3736 handle = hci_event_mode_change_get_handle(packet); 3737 conn = hci_connection_for_handle(handle); 3738 if (!conn) break; 3739 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3740 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3741 break; 3742 #endif 3743 3744 case HCI_EVENT_ENCRYPTION_CHANGE: 3745 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3746 handle = hci_event_encryption_change_get_connection_handle(packet); 3747 conn = hci_connection_for_handle(handle); 3748 if (!conn) break; 3749 if (hci_event_encryption_change_get_status(packet) == 0u) { 3750 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3751 if (encryption_enabled){ 3752 if (hci_is_le_connection(conn)){ 3753 // For LE, we accept connection as encrypted 3754 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3755 } 3756 #ifdef ENABLE_CLASSIC 3757 else { 3758 3759 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3760 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3761 bool connected_uses_aes_ccm = encryption_enabled == 2; 3762 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3763 log_info("SC during pairing, but only E0 now -> abort"); 3764 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3765 break; 3766 } 3767 3768 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3769 if (connected_uses_aes_ccm){ 3770 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3771 } 3772 3773 #ifdef ENABLE_TESTING_SUPPORT 3774 // work around for issue with PTS dongle 3775 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3776 #endif 3777 // validate encryption key size 3778 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3779 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3780 // already got encryption key size 3781 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3782 } else { 3783 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3784 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3785 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3786 } else { 3787 // if not, pretend everything is perfect 3788 hci_handle_read_encryption_key_size_complete(conn, 16); 3789 } 3790 } 3791 } 3792 #endif 3793 } else { 3794 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3795 } 3796 } else { 3797 uint8_t status = hci_event_encryption_change_get_status(packet); 3798 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3799 conn->bonding_flags &= ~BONDING_DEDICATED; 3800 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3801 conn->bonding_status = status; 3802 } 3803 } 3804 3805 break; 3806 3807 #ifdef ENABLE_CLASSIC 3808 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3809 handle = hci_event_authentication_complete_get_connection_handle(packet); 3810 conn = hci_connection_for_handle(handle); 3811 if (!conn) break; 3812 3813 // clear authentication active flag 3814 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3815 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3816 3817 // authenticated only if auth status == 0 3818 if (hci_event_authentication_complete_get_status(packet) == 0){ 3819 // authenticated 3820 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3821 3822 // If not already encrypted, start encryption 3823 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3824 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3825 break; 3826 } 3827 } 3828 3829 // emit updated security level 3830 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3831 break; 3832 3833 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3834 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3835 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3836 if (!conn) break; 3837 3838 // treat successfully paired connection as authenticated 3839 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3840 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3841 } 3842 3843 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3844 break; 3845 #endif 3846 3847 // HCI_EVENT_DISCONNECTION_COMPLETE 3848 // has been split, to first notify stack before shutting connection down 3849 // see end of function, too. 3850 case HCI_EVENT_DISCONNECTION_COMPLETE: 3851 if (packet[2]) break; // status != 0 3852 handle = little_endian_read_16(packet, 3); 3853 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3854 if (hci_stack->acl_fragmentation_total_size > 0u) { 3855 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3856 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3857 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3858 hci_stack->acl_fragmentation_total_size = 0; 3859 hci_stack->acl_fragmentation_pos = 0; 3860 if (release_buffer){ 3861 hci_release_packet_buffer(); 3862 } 3863 } 3864 } 3865 3866 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3867 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3868 if (hci_stack->iso_fragmentation_total_size > 0u) { 3869 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3870 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3871 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3872 hci_stack->iso_fragmentation_total_size = 0; 3873 hci_stack->iso_fragmentation_pos = 0; 3874 if (release_buffer){ 3875 hci_release_packet_buffer(); 3876 } 3877 } 3878 } 3879 3880 // finalize iso stream if handle matches 3881 iso_stream = hci_iso_stream_for_con_handle(handle); 3882 if (iso_stream != NULL){ 3883 hci_iso_stream_finalize(iso_stream); 3884 break; 3885 } 3886 #endif 3887 3888 conn = hci_connection_for_handle(handle); 3889 if (!conn) break; 3890 #ifdef ENABLE_CLASSIC 3891 // pairing failed if it was ongoing 3892 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3893 #endif 3894 3895 // emit dedicatd bonding event 3896 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3897 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3898 } 3899 3900 // mark connection for shutdown, stop timers, reset state 3901 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3902 hci_connection_stop_timer(conn); 3903 hci_connection_init(conn); 3904 3905 #ifdef ENABLE_BLE 3906 #ifdef ENABLE_LE_PERIPHERAL 3907 // re-enable advertisements for le connections if active 3908 if (hci_is_le_connection(conn)){ 3909 hci_update_advertisements_enabled_for_current_roles(); 3910 } 3911 #endif 3912 #endif 3913 break; 3914 3915 case HCI_EVENT_HARDWARE_ERROR: 3916 log_error("Hardware Error: 0x%02x", packet[2]); 3917 if (hci_stack->hardware_error_callback){ 3918 (*hci_stack->hardware_error_callback)(packet[2]); 3919 } else { 3920 // if no special requests, just reboot stack 3921 hci_power_control_off(); 3922 hci_power_control_on(); 3923 } 3924 break; 3925 3926 #ifdef ENABLE_CLASSIC 3927 case HCI_EVENT_ROLE_CHANGE: 3928 if (packet[2]) break; // status != 0 3929 reverse_bd_addr(&packet[3], addr); 3930 addr_type = BD_ADDR_TYPE_ACL; 3931 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3932 if (!conn) break; 3933 conn->role = packet[9]; 3934 break; 3935 #endif 3936 3937 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3938 // release packet buffer only for asynchronous transport and if there are not further fragments 3939 if (hci_transport_synchronous()) { 3940 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3941 return; // instead of break: to avoid re-entering hci_run() 3942 } 3943 hci_stack->acl_fragmentation_tx_active = 0; 3944 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3945 hci_stack->iso_fragmentation_tx_active = 0; 3946 if (hci_stack->iso_fragmentation_total_size) break; 3947 #endif 3948 if (hci_stack->acl_fragmentation_total_size) break; 3949 hci_release_packet_buffer(); 3950 3951 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3952 hci_iso_notify_can_send_now(); 3953 #endif 3954 // L2CAP receives this event via the hci_emit_event below 3955 3956 #ifdef ENABLE_CLASSIC 3957 // For SCO, we do the can_send_now_check here 3958 hci_notify_if_sco_can_send_now(); 3959 #endif 3960 break; 3961 3962 #ifdef ENABLE_CLASSIC 3963 case HCI_EVENT_SCO_CAN_SEND_NOW: 3964 // For SCO, we do the can_send_now_check here 3965 hci_stack->sco_can_send_now = true; 3966 hci_notify_if_sco_can_send_now(); 3967 return; 3968 3969 // explode inquriy results for easier consumption 3970 case HCI_EVENT_INQUIRY_RESULT: 3971 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3972 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3973 gap_inquiry_explode(packet, size); 3974 break; 3975 #endif 3976 3977 #ifdef ENABLE_BLE 3978 case HCI_EVENT_LE_META: 3979 switch (packet[2]){ 3980 #ifdef ENABLE_LE_CENTRAL 3981 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3982 if (!hci_stack->le_scanning_enabled) break; 3983 le_handle_advertisement_report(packet, size); 3984 break; 3985 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3986 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3987 if (!hci_stack->le_scanning_enabled) break; 3988 le_handle_extended_advertisement_report(packet, size); 3989 break; 3990 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 3991 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 3992 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 3993 break; 3994 #endif 3995 #endif 3996 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3997 event_handle_le_connection_complete(packet); 3998 break; 3999 4000 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4001 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4002 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4003 conn = hci_connection_for_handle(handle); 4004 if (!conn) break; 4005 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4006 break; 4007 4008 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4009 // connection 4010 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4011 conn = hci_connection_for_handle(handle); 4012 if (conn) { 4013 // read arguments 4014 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4015 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4016 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4017 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4018 4019 // validate against current connection parameter range 4020 le_connection_parameter_range_t existing_range; 4021 gap_get_connection_parameter_range(&existing_range); 4022 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4023 if (update_parameter){ 4024 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4025 conn->le_conn_interval_min = le_conn_interval_min; 4026 conn->le_conn_interval_max = le_conn_interval_max; 4027 conn->le_conn_latency = le_conn_latency; 4028 conn->le_supervision_timeout = le_supervision_timeout; 4029 } else { 4030 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4031 } 4032 } 4033 break; 4034 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4035 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4036 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4037 conn = hci_connection_for_handle(handle); 4038 if (conn) { 4039 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4040 } 4041 break; 4042 #endif 4043 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4044 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4045 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4046 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4047 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4048 iso_stream = hci_iso_stream_for_con_handle(handle); 4049 btstack_assert(iso_stream != NULL); 4050 // track SDU 4051 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4052 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4053 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4054 // CIS Accept by Peripheral 4055 if (status == ERROR_CODE_SUCCESS){ 4056 if (iso_stream->max_sdu_p_to_c > 0){ 4057 // we're peripheral and we will send data 4058 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4059 } else { 4060 // we're peripheral and we will only receive data 4061 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4062 } 4063 } else { 4064 hci_iso_stream_finalize(iso_stream); 4065 hci_emit_cis_created(HCI_ISO_GROUP_ID_INVALID, handle, status); 4066 } 4067 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4068 } else { 4069 // CIG Setup by Central 4070 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4071 btstack_assert(cig != NULL); 4072 // update iso stream state 4073 if (status == ERROR_CODE_SUCCESS){ 4074 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4075 } else { 4076 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4077 } 4078 // update cig state 4079 uint8_t i; 4080 for (i=0;i<cig->num_cis;i++){ 4081 if (cig->cis_con_handles[i] == handle){ 4082 cig->cis_setup_active[i] = false; 4083 if (status == ERROR_CODE_SUCCESS){ 4084 cig->cis_established[i] = true; 4085 } else { 4086 hci_emit_cis_created(cig->cig_id, handle, status); 4087 } 4088 } 4089 } 4090 4091 // trigger iso path setup if complete 4092 bool cis_setup_active = false; 4093 for (i=0;i<cig->num_cis;i++){ 4094 cis_setup_active |= cig->cis_setup_active[i]; 4095 } 4096 if (cis_setup_active == false){ 4097 cig->state_vars.next_cis = 0; 4098 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4099 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4100 } 4101 } 4102 } 4103 break; 4104 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4105 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4106 big = hci_big_for_handle(packet[4]); 4107 if (big != NULL){ 4108 uint8_t status = packet[3]; 4109 if (status == ERROR_CODE_SUCCESS){ 4110 // store bis_con_handles and trigger iso path setup 4111 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4112 uint8_t i; 4113 for (i=0;i<num_bis;i++){ 4114 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4115 big->bis_con_handles[i] = bis_handle; 4116 // assign bis handle 4117 btstack_linked_list_iterator_t it; 4118 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4119 while (btstack_linked_list_iterator_has_next(&it)){ 4120 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4121 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4122 (iso_stream->group_id == big->big_handle)){ 4123 iso_stream->con_handle = bis_handle; 4124 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4125 break; 4126 } 4127 } 4128 } 4129 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4130 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4131 big->state_vars.next_bis = 0; 4132 } 4133 } else { 4134 // create BIG failed or has been stopped by us 4135 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4136 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4137 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4138 hci_emit_big_created(big, status); 4139 } else { 4140 hci_emit_big_terminated(big); 4141 } 4142 } 4143 } 4144 break; 4145 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4146 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4147 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4148 if (big != NULL){ 4149 // finalize associated ISO streams 4150 btstack_linked_list_iterator_t it; 4151 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4152 while (btstack_linked_list_iterator_has_next(&it)){ 4153 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4154 if (iso_stream->group_id == big->big_handle){ 4155 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->con_handle); 4156 btstack_linked_list_iterator_remove(&it); 4157 btstack_memory_hci_iso_stream_free(iso_stream); 4158 } 4159 } 4160 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4161 switch (big->state){ 4162 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4163 hci_emit_big_created(big, big->state_vars.status); 4164 break; 4165 default: 4166 hci_emit_big_terminated(big); 4167 break; 4168 } 4169 } 4170 break; 4171 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4172 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4173 big_sync = hci_big_sync_for_handle(packet[4]); 4174 if (big_sync != NULL){ 4175 uint8_t status = packet[3]; 4176 uint8_t big_handle = packet[4]; 4177 if (status == ERROR_CODE_SUCCESS){ 4178 // store bis_con_handles and trigger iso path setup 4179 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4180 uint8_t i; 4181 for (i=0;i<num_bis;i++){ 4182 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4183 } 4184 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4185 // trigger iso path setup 4186 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4187 big_sync->state_vars.next_bis = 0; 4188 } 4189 } else { 4190 // create BIG Sync failed or has been stopped by us 4191 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4192 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4193 hci_emit_big_sync_created(big_sync, status); 4194 } else { 4195 hci_emit_big_sync_stopped(big_handle); 4196 } 4197 } 4198 } 4199 break; 4200 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4201 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4202 big_sync = hci_big_sync_for_handle(packet[4]); 4203 if (big_sync != NULL){ 4204 uint8_t big_handle = packet[4]; 4205 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4206 hci_emit_big_sync_stopped(big_handle); 4207 } 4208 break; 4209 #endif 4210 default: 4211 break; 4212 } 4213 break; 4214 #endif 4215 case HCI_EVENT_VENDOR_SPECIFIC: 4216 // Vendor specific commands often create vendor specific event instead of num completed packets 4217 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4218 switch (hci_stack->manufacturer){ 4219 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4220 hci_stack->num_cmd_packets = 1; 4221 break; 4222 default: 4223 break; 4224 } 4225 break; 4226 default: 4227 break; 4228 } 4229 4230 handle_event_for_current_stack_state(packet, size); 4231 4232 // notify upper stack 4233 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4234 4235 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4236 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4237 handle = little_endian_read_16(packet, 3); 4238 hci_connection_t * aConn = hci_connection_for_handle(handle); 4239 // discard connection if app did not trigger a reconnect in the event handler 4240 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4241 hci_shutdown_connection(aConn); 4242 } 4243 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4244 hci_controller_dump_packets(); 4245 #endif 4246 } 4247 4248 // execute main loop 4249 hci_run(); 4250 } 4251 4252 #ifdef ENABLE_CLASSIC 4253 4254 #ifdef ENABLE_SCO_OVER_HCI 4255 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4256 static void sco_schedule_tx(hci_connection_t * conn); 4257 4258 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4259 log_debug("SCO TX Timeout"); 4260 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4261 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4262 if (!conn) return; 4263 4264 // trigger send 4265 conn->sco_tx_ready = 1; 4266 // extra packet if CVSD but SCO buffer is too short 4267 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4268 conn->sco_tx_ready++; 4269 } 4270 hci_notify_if_sco_can_send_now(); 4271 } 4272 4273 4274 #define SCO_TX_AFTER_RX_MS (6) 4275 4276 static void sco_schedule_tx(hci_connection_t * conn){ 4277 4278 uint32_t now = btstack_run_loop_get_time_ms(); 4279 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4280 int time_delta_ms = sco_tx_ms - now; 4281 4282 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4283 4284 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4285 btstack_run_loop_remove_timer(timer); 4286 btstack_run_loop_set_timer(timer, time_delta_ms); 4287 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4288 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4289 btstack_run_loop_add_timer(timer); 4290 } 4291 #endif 4292 4293 static void sco_handler(uint8_t * packet, uint16_t size){ 4294 // lookup connection struct 4295 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4296 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4297 if (!conn) return; 4298 4299 #ifdef ENABLE_SCO_OVER_HCI 4300 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4301 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4302 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4303 packet[2] = 0x3c; 4304 memmove(&packet[3], &packet[23], 63); 4305 size = 63; 4306 } 4307 } 4308 4309 if (hci_have_usb_transport()){ 4310 // Nothing to do 4311 } else { 4312 // 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); 4313 if (hci_stack->synchronous_flow_control_enabled == 0){ 4314 uint32_t now = btstack_run_loop_get_time_ms(); 4315 4316 if (!conn->sco_rx_valid){ 4317 // ignore first 10 packets 4318 conn->sco_rx_count++; 4319 // log_debug("sco rx count %u", conn->sco_rx_count); 4320 if (conn->sco_rx_count == 10) { 4321 // use first timestamp as is and pretent it just started 4322 conn->sco_rx_ms = now; 4323 conn->sco_rx_valid = 1; 4324 conn->sco_rx_count = 0; 4325 sco_schedule_tx(conn); 4326 } 4327 } else { 4328 // track expected arrival timme 4329 conn->sco_rx_count++; 4330 conn->sco_rx_ms += 7; 4331 int delta = (int32_t) (now - conn->sco_rx_ms); 4332 if (delta > 0){ 4333 conn->sco_rx_ms++; 4334 } 4335 // log_debug("sco rx %u", conn->sco_rx_ms); 4336 sco_schedule_tx(conn); 4337 } 4338 } 4339 } 4340 #endif 4341 4342 // deliver to app 4343 if (hci_stack->sco_packet_handler) { 4344 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4345 } 4346 4347 #ifdef HAVE_SCO_TRANSPORT 4348 // We can send one packet for each received packet 4349 conn->sco_tx_ready++; 4350 hci_notify_if_sco_can_send_now(); 4351 #endif 4352 4353 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4354 conn->num_packets_completed++; 4355 hci_stack->host_completed_packets = 1; 4356 hci_run(); 4357 #endif 4358 } 4359 #endif 4360 4361 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4362 hci_dump_packet(packet_type, 1, packet, size); 4363 switch (packet_type) { 4364 case HCI_EVENT_PACKET: 4365 event_handler(packet, size); 4366 break; 4367 case HCI_ACL_DATA_PACKET: 4368 acl_handler(packet, size); 4369 break; 4370 #ifdef ENABLE_CLASSIC 4371 case HCI_SCO_DATA_PACKET: 4372 sco_handler(packet, size); 4373 break; 4374 #endif 4375 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4376 case HCI_ISO_DATA_PACKET: 4377 hci_iso_packet_handler(packet, size); 4378 break; 4379 #endif 4380 default: 4381 break; 4382 } 4383 } 4384 4385 /** 4386 * @brief Add event packet handler. 4387 */ 4388 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4389 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4390 } 4391 4392 /** 4393 * @brief Remove event packet handler. 4394 */ 4395 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4396 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4397 } 4398 4399 /** Register HCI packet handlers */ 4400 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4401 hci_stack->acl_packet_handler = handler; 4402 } 4403 4404 #ifdef ENABLE_CLASSIC 4405 /** 4406 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4407 */ 4408 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4409 hci_stack->sco_packet_handler = handler; 4410 } 4411 #endif 4412 4413 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4414 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4415 hci_stack->iso_packet_handler = handler; 4416 } 4417 #endif 4418 4419 static void hci_state_reset(void){ 4420 // no connections yet 4421 hci_stack->connections = NULL; 4422 4423 // keep discoverable/connectable as this has been requested by the client(s) 4424 // hci_stack->discoverable = 0; 4425 // hci_stack->connectable = 0; 4426 // hci_stack->bondable = 1; 4427 // hci_stack->own_addr_type = 0; 4428 4429 // buffer is free 4430 hci_stack->hci_packet_buffer_reserved = false; 4431 4432 // no pending cmds 4433 hci_stack->decline_reason = 0; 4434 4435 hci_stack->secure_connections_active = false; 4436 4437 #ifdef ENABLE_CLASSIC 4438 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4439 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4440 4441 hci_stack->gap_tasks_classic = 4442 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4443 GAP_TASK_SET_CLASS_OF_DEVICE | 4444 GAP_TASK_SET_LOCAL_NAME | 4445 GAP_TASK_SET_EIR_DATA | 4446 GAP_TASK_WRITE_SCAN_ENABLE | 4447 GAP_TASK_WRITE_PAGE_TIMEOUT; 4448 #endif 4449 4450 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4451 hci_stack->classic_read_local_oob_data = false; 4452 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4453 #endif 4454 4455 // LE 4456 #ifdef ENABLE_BLE 4457 memset(hci_stack->le_random_address, 0, 6); 4458 hci_stack->le_random_address_set = 0; 4459 #endif 4460 #ifdef ENABLE_LE_CENTRAL 4461 hci_stack->le_scanning_active = false; 4462 hci_stack->le_scanning_param_update = true; 4463 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4464 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4465 hci_stack->le_whitelist_capacity = 0; 4466 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4467 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4468 #endif 4469 #endif 4470 #ifdef ENABLE_LE_PERIPHERAL 4471 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4472 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4473 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4474 } 4475 if (hci_stack->le_advertisements_data != NULL){ 4476 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4477 } 4478 #endif 4479 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4480 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4481 #endif 4482 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4483 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4484 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4485 #endif 4486 } 4487 4488 #ifdef ENABLE_CLASSIC 4489 /** 4490 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4491 */ 4492 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4493 // store and open remote device db 4494 hci_stack->link_key_db = link_key_db; 4495 if (hci_stack->link_key_db) { 4496 hci_stack->link_key_db->open(); 4497 } 4498 } 4499 #endif 4500 4501 void hci_init(const hci_transport_t *transport, const void *config){ 4502 4503 #ifdef HAVE_MALLOC 4504 if (!hci_stack) { 4505 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4506 } 4507 #else 4508 hci_stack = &hci_stack_static; 4509 #endif 4510 memset(hci_stack, 0, sizeof(hci_stack_t)); 4511 4512 // reference to use transport layer implementation 4513 hci_stack->hci_transport = transport; 4514 4515 // reference to used config 4516 hci_stack->config = config; 4517 4518 // setup pointer for outgoing packet buffer 4519 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4520 4521 // max acl payload size defined in config.h 4522 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4523 4524 // register packet handlers with transport 4525 transport->register_packet_handler(&packet_handler); 4526 4527 hci_stack->state = HCI_STATE_OFF; 4528 4529 // class of device 4530 hci_stack->class_of_device = 0x007a020c; // Smartphone 4531 4532 // bondable by default 4533 hci_stack->bondable = 1; 4534 4535 #ifdef ENABLE_CLASSIC 4536 // classic name 4537 hci_stack->local_name = default_classic_name; 4538 4539 // Master slave policy 4540 hci_stack->master_slave_policy = 1; 4541 4542 // Allow Role Switch 4543 hci_stack->allow_role_switch = 1; 4544 4545 // Default / minimum security level = 2 4546 hci_stack->gap_security_level = LEVEL_2; 4547 4548 // Default Security Mode 4 4549 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4550 4551 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4552 hci_stack->gap_required_encyrption_key_size = 7; 4553 4554 // Link Supervision Timeout 4555 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4556 4557 #endif 4558 4559 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4560 hci_stack->ssp_enable = 1; 4561 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4562 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4563 hci_stack->ssp_auto_accept = 1; 4564 4565 // Secure Connections: enable (requires support from Controller) 4566 hci_stack->secure_connections_enable = true; 4567 4568 // voice setting - signed 16 bit pcm data with CVSD over the air 4569 hci_stack->sco_voice_setting = 0x60; 4570 4571 #ifdef ENABLE_LE_CENTRAL 4572 // connection parameter to use for outgoing connections 4573 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4574 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4575 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4576 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4577 hci_stack->le_connection_latency = 4; // 4 4578 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4579 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4580 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4581 4582 // default LE Scanning 4583 hci_stack->le_scan_type = 0x1; // active 4584 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4585 hci_stack->le_scan_window = 0x30; // 30 ms 4586 #endif 4587 4588 #ifdef ENABLE_LE_PERIPHERAL 4589 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4590 #endif 4591 4592 // connection parameter range used to answer connection parameter update requests in l2cap 4593 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4594 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4595 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4596 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4597 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4598 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4599 4600 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4601 hci_stack->iso_packets_to_queue = 1; 4602 #endif 4603 4604 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4605 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4606 #endif 4607 4608 hci_state_reset(); 4609 } 4610 4611 void hci_deinit(void){ 4612 btstack_run_loop_remove_timer(&hci_stack->timeout); 4613 #ifdef HAVE_MALLOC 4614 if (hci_stack) { 4615 free(hci_stack); 4616 } 4617 #endif 4618 hci_stack = NULL; 4619 4620 #ifdef ENABLE_CLASSIC 4621 disable_l2cap_timeouts = 0; 4622 #endif 4623 } 4624 4625 /** 4626 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4627 */ 4628 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4629 hci_stack->chipset = chipset_driver; 4630 4631 // reset chipset driver - init is also called on power_up 4632 if (hci_stack->chipset && hci_stack->chipset->init){ 4633 hci_stack->chipset->init(hci_stack->config); 4634 } 4635 } 4636 4637 /** 4638 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4639 */ 4640 void hci_set_control(const btstack_control_t *hardware_control){ 4641 // references to used control implementation 4642 hci_stack->control = hardware_control; 4643 // init with transport config 4644 hardware_control->init(hci_stack->config); 4645 } 4646 4647 static void hci_discard_connections(void){ 4648 btstack_linked_list_iterator_t it; 4649 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4650 while (btstack_linked_list_iterator_has_next(&it)){ 4651 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4652 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4653 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4654 hci_shutdown_connection(connection); 4655 } 4656 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4657 while (hci_stack->iso_streams != NULL){ 4658 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4659 } 4660 #endif 4661 } 4662 4663 void hci_close(void){ 4664 4665 #ifdef ENABLE_CLASSIC 4666 // close remote device db 4667 if (hci_stack->link_key_db) { 4668 hci_stack->link_key_db->close(); 4669 } 4670 #endif 4671 4672 hci_discard_connections(); 4673 4674 hci_power_control(HCI_POWER_OFF); 4675 4676 #ifdef HAVE_MALLOC 4677 free(hci_stack); 4678 #endif 4679 hci_stack = NULL; 4680 } 4681 4682 #ifdef HAVE_SCO_TRANSPORT 4683 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4684 hci_stack->sco_transport = sco_transport; 4685 sco_transport->register_packet_handler(&packet_handler); 4686 } 4687 #endif 4688 4689 #ifdef ENABLE_CLASSIC 4690 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4691 // validate ranage and set 4692 if (encryption_key_size < 7) return; 4693 if (encryption_key_size > 16) return; 4694 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4695 } 4696 4697 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4698 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4699 hci_stack->gap_security_mode = security_mode; 4700 return ERROR_CODE_SUCCESS; 4701 } else { 4702 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4703 } 4704 } 4705 4706 gap_security_mode_t gap_get_security_mode(void){ 4707 return hci_stack->gap_security_mode; 4708 } 4709 4710 void gap_set_security_level(gap_security_level_t security_level){ 4711 hci_stack->gap_security_level = security_level; 4712 } 4713 4714 gap_security_level_t gap_get_security_level(void){ 4715 if (hci_stack->gap_secure_connections_only_mode){ 4716 return LEVEL_4; 4717 } 4718 return hci_stack->gap_security_level; 4719 } 4720 4721 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4722 hci_stack->gap_minimal_service_security_level = security_level; 4723 } 4724 4725 void gap_set_secure_connections_only_mode(bool enable){ 4726 hci_stack->gap_secure_connections_only_mode = enable; 4727 } 4728 4729 bool gap_get_secure_connections_only_mode(void){ 4730 return hci_stack->gap_secure_connections_only_mode; 4731 } 4732 #endif 4733 4734 #ifdef ENABLE_CLASSIC 4735 void gap_set_class_of_device(uint32_t class_of_device){ 4736 hci_stack->class_of_device = class_of_device; 4737 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4738 hci_run(); 4739 } 4740 4741 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4742 hci_stack->default_link_policy_settings = default_link_policy_settings; 4743 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4744 hci_run(); 4745 } 4746 4747 void gap_set_allow_role_switch(bool allow_role_switch){ 4748 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4749 } 4750 4751 uint8_t hci_get_allow_role_switch(void){ 4752 return hci_stack->allow_role_switch; 4753 } 4754 4755 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4756 hci_stack->link_supervision_timeout = link_supervision_timeout; 4757 } 4758 4759 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4760 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4761 } 4762 4763 uint16_t hci_automatic_flush_timeout(void){ 4764 return hci_stack->automatic_flush_timeout; 4765 } 4766 4767 void hci_disable_l2cap_timeout_check(void){ 4768 disable_l2cap_timeouts = 1; 4769 } 4770 #endif 4771 4772 #ifndef HAVE_HOST_CONTROLLER_API 4773 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4774 void hci_set_bd_addr(bd_addr_t addr){ 4775 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4776 hci_stack->custom_bd_addr_set = 1; 4777 } 4778 #endif 4779 4780 // State-Module-Driver overview 4781 // state module low-level 4782 // HCI_STATE_OFF off close 4783 // HCI_STATE_INITIALIZING, on open 4784 // HCI_STATE_WORKING, on open 4785 // HCI_STATE_HALTING, on open 4786 // HCI_STATE_SLEEPING, off/sleep close 4787 // HCI_STATE_FALLING_ASLEEP on open 4788 4789 static int hci_power_control_on(void){ 4790 4791 // power on 4792 int err = 0; 4793 if (hci_stack->control && hci_stack->control->on){ 4794 err = (*hci_stack->control->on)(); 4795 } 4796 if (err){ 4797 log_error( "POWER_ON failed"); 4798 hci_emit_hci_open_failed(); 4799 return err; 4800 } 4801 4802 // int chipset driver 4803 if (hci_stack->chipset && hci_stack->chipset->init){ 4804 hci_stack->chipset->init(hci_stack->config); 4805 } 4806 4807 // init transport 4808 if (hci_stack->hci_transport->init){ 4809 hci_stack->hci_transport->init(hci_stack->config); 4810 } 4811 4812 // open transport 4813 err = hci_stack->hci_transport->open(); 4814 if (err){ 4815 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4816 if (hci_stack->control && hci_stack->control->off){ 4817 (*hci_stack->control->off)(); 4818 } 4819 hci_emit_hci_open_failed(); 4820 return err; 4821 } 4822 return 0; 4823 } 4824 4825 static void hci_power_control_off(void){ 4826 4827 log_info("hci_power_control_off"); 4828 4829 // close low-level device 4830 hci_stack->hci_transport->close(); 4831 4832 log_info("hci_power_control_off - hci_transport closed"); 4833 4834 // power off 4835 if (hci_stack->control && hci_stack->control->off){ 4836 (*hci_stack->control->off)(); 4837 } 4838 4839 log_info("hci_power_control_off - control closed"); 4840 4841 hci_stack->state = HCI_STATE_OFF; 4842 } 4843 4844 static void hci_power_control_sleep(void){ 4845 4846 log_info("hci_power_control_sleep"); 4847 4848 #if 0 4849 // don't close serial port during sleep 4850 4851 // close low-level device 4852 hci_stack->hci_transport->close(hci_stack->config); 4853 #endif 4854 4855 // sleep mode 4856 if (hci_stack->control && hci_stack->control->sleep){ 4857 (*hci_stack->control->sleep)(); 4858 } 4859 4860 hci_stack->state = HCI_STATE_SLEEPING; 4861 } 4862 4863 static int hci_power_control_wake(void){ 4864 4865 log_info("hci_power_control_wake"); 4866 4867 // wake on 4868 if (hci_stack->control && hci_stack->control->wake){ 4869 (*hci_stack->control->wake)(); 4870 } 4871 4872 #if 0 4873 // open low-level device 4874 int err = hci_stack->hci_transport->open(hci_stack->config); 4875 if (err){ 4876 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4877 if (hci_stack->control && hci_stack->control->off){ 4878 (*hci_stack->control->off)(); 4879 } 4880 hci_emit_hci_open_failed(); 4881 return err; 4882 } 4883 #endif 4884 4885 return 0; 4886 } 4887 4888 static void hci_power_enter_initializing_state(void){ 4889 // set up state machine 4890 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4891 hci_stack->hci_packet_buffer_reserved = false; 4892 hci_stack->state = HCI_STATE_INITIALIZING; 4893 hci_stack->substate = HCI_INIT_SEND_RESET; 4894 } 4895 4896 static void hci_power_enter_halting_state(void){ 4897 #ifdef ENABLE_BLE 4898 // drop entries scheduled for removal, mark others for re-adding 4899 btstack_linked_list_iterator_t it; 4900 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 4901 while (btstack_linked_list_iterator_has_next(&it)){ 4902 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 4903 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 4904 btstack_linked_list_iterator_remove(&it); 4905 btstack_memory_whitelist_entry_free(entry); 4906 } else { 4907 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 4908 } 4909 } 4910 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4911 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 4912 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 4913 while (btstack_linked_list_iterator_has_next(&it)){ 4914 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 4915 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 4916 btstack_linked_list_iterator_remove(&it); 4917 btstack_memory_periodic_advertiser_list_entry_free(entry); 4918 } else { 4919 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 4920 continue; 4921 } 4922 } 4923 #endif 4924 #endif 4925 // see hci_run 4926 hci_stack->state = HCI_STATE_HALTING; 4927 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4928 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4929 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4930 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4931 btstack_run_loop_add_timer(&hci_stack->timeout); 4932 } 4933 4934 // returns error 4935 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4936 int err; 4937 switch (power_mode){ 4938 case HCI_POWER_ON: 4939 err = hci_power_control_on(); 4940 if (err != 0) { 4941 log_error("hci_power_control_on() error %d", err); 4942 return err; 4943 } 4944 hci_power_enter_initializing_state(); 4945 break; 4946 case HCI_POWER_OFF: 4947 // do nothing 4948 break; 4949 case HCI_POWER_SLEEP: 4950 // do nothing (with SLEEP == OFF) 4951 break; 4952 default: 4953 btstack_assert(false); 4954 break; 4955 } 4956 return ERROR_CODE_SUCCESS; 4957 } 4958 4959 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4960 switch (power_mode){ 4961 case HCI_POWER_ON: 4962 // do nothing 4963 break; 4964 case HCI_POWER_OFF: 4965 // no connections yet, just turn it off 4966 hci_power_control_off(); 4967 break; 4968 case HCI_POWER_SLEEP: 4969 // no connections yet, just turn it off 4970 hci_power_control_sleep(); 4971 break; 4972 default: 4973 btstack_assert(false); 4974 break; 4975 } 4976 return ERROR_CODE_SUCCESS; 4977 } 4978 4979 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4980 switch (power_mode){ 4981 case HCI_POWER_ON: 4982 // do nothing 4983 break; 4984 case HCI_POWER_OFF: 4985 hci_power_enter_halting_state(); 4986 break; 4987 case HCI_POWER_SLEEP: 4988 // see hci_run 4989 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4990 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4991 break; 4992 default: 4993 btstack_assert(false); 4994 break; 4995 } 4996 return ERROR_CODE_SUCCESS; 4997 } 4998 4999 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5000 switch (power_mode){ 5001 case HCI_POWER_ON: 5002 hci_power_enter_initializing_state(); 5003 break; 5004 case HCI_POWER_OFF: 5005 // do nothing 5006 break; 5007 case HCI_POWER_SLEEP: 5008 // see hci_run 5009 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5010 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5011 break; 5012 default: 5013 btstack_assert(false); 5014 break; 5015 } 5016 return ERROR_CODE_SUCCESS; 5017 } 5018 5019 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5020 switch (power_mode){ 5021 case HCI_POWER_ON: 5022 hci_power_enter_initializing_state(); 5023 break; 5024 case HCI_POWER_OFF: 5025 hci_power_enter_halting_state(); 5026 break; 5027 case HCI_POWER_SLEEP: 5028 // do nothing 5029 break; 5030 default: 5031 btstack_assert(false); 5032 break; 5033 } 5034 return ERROR_CODE_SUCCESS; 5035 } 5036 5037 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5038 int err; 5039 switch (power_mode){ 5040 case HCI_POWER_ON: 5041 err = hci_power_control_wake(); 5042 if (err) return err; 5043 hci_power_enter_initializing_state(); 5044 break; 5045 case HCI_POWER_OFF: 5046 hci_power_enter_halting_state(); 5047 break; 5048 case HCI_POWER_SLEEP: 5049 // do nothing 5050 break; 5051 default: 5052 btstack_assert(false); 5053 break; 5054 } 5055 return ERROR_CODE_SUCCESS; 5056 } 5057 5058 int hci_power_control(HCI_POWER_MODE power_mode){ 5059 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5060 btstack_run_loop_remove_timer(&hci_stack->timeout); 5061 int err = 0; 5062 switch (hci_stack->state){ 5063 case HCI_STATE_OFF: 5064 err = hci_power_control_state_off(power_mode); 5065 break; 5066 case HCI_STATE_INITIALIZING: 5067 err = hci_power_control_state_initializing(power_mode); 5068 break; 5069 case HCI_STATE_WORKING: 5070 err = hci_power_control_state_working(power_mode); 5071 break; 5072 case HCI_STATE_HALTING: 5073 err = hci_power_control_state_halting(power_mode); 5074 break; 5075 case HCI_STATE_FALLING_ASLEEP: 5076 err = hci_power_control_state_falling_asleep(power_mode); 5077 break; 5078 case HCI_STATE_SLEEPING: 5079 err = hci_power_control_state_sleeping(power_mode); 5080 break; 5081 default: 5082 btstack_assert(false); 5083 break; 5084 } 5085 if (err != 0){ 5086 return err; 5087 } 5088 5089 // create internal event 5090 hci_emit_state(); 5091 5092 // trigger next/first action 5093 hci_run(); 5094 5095 return 0; 5096 } 5097 5098 5099 static void hci_halting_run(void) { 5100 5101 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5102 5103 hci_connection_t *connection; 5104 #ifdef ENABLE_BLE 5105 #ifdef ENABLE_LE_PERIPHERAL 5106 bool stop_advertismenets; 5107 #endif 5108 #endif 5109 5110 switch (hci_stack->substate) { 5111 case HCI_HALTING_CLASSIC_STOP: 5112 #ifdef ENABLE_CLASSIC 5113 if (!hci_can_send_command_packet_now()) return; 5114 5115 if (hci_stack->connectable || hci_stack->discoverable){ 5116 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5117 hci_send_cmd(&hci_write_scan_enable, 0); 5118 return; 5119 } 5120 #endif 5121 /* fall through */ 5122 5123 case HCI_HALTING_LE_ADV_STOP: 5124 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5125 5126 #ifdef ENABLE_BLE 5127 #ifdef ENABLE_LE_PERIPHERAL 5128 if (!hci_can_send_command_packet_now()) return; 5129 5130 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5131 5132 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5133 if (hci_extended_advertising_supported()){ 5134 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5135 btstack_linked_list_iterator_t it; 5136 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5137 // stop all periodic advertisements and check if an extended set is active 5138 while (btstack_linked_list_iterator_has_next(&it)){ 5139 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5140 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5141 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5142 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5143 return; 5144 } 5145 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5146 stop_advertismenets = true; 5147 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5148 } 5149 } 5150 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5151 if (stop_advertismenets){ 5152 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5153 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5154 return; 5155 } 5156 } 5157 else 5158 #else /* ENABLE_LE_PERIPHERAL */ 5159 { 5160 if (stop_advertismenets) { 5161 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5162 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5163 return; 5164 } 5165 } 5166 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5167 #endif /* ENABLE_LE_PERIPHERAL */ 5168 #endif /* ENABLE_BLE */ 5169 5170 /* fall through */ 5171 5172 case HCI_HALTING_LE_SCAN_STOP: 5173 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5174 if (!hci_can_send_command_packet_now()) return; 5175 5176 #ifdef ENABLE_BLE 5177 #ifdef ENABLE_LE_CENTRAL 5178 if (hci_stack->le_scanning_active){ 5179 hci_le_scan_stop(); 5180 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5181 return; 5182 } 5183 #endif 5184 #endif 5185 5186 /* fall through */ 5187 5188 case HCI_HALTING_DISCONNECT_ALL: 5189 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5190 if (!hci_can_send_command_packet_now()) return; 5191 5192 // close all open connections 5193 connection = (hci_connection_t *) hci_stack->connections; 5194 if (connection) { 5195 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5196 5197 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5198 5199 // check state 5200 switch(connection->state) { 5201 case SENT_DISCONNECT: 5202 case RECEIVED_DISCONNECTION_COMPLETE: 5203 // wait until connection is gone 5204 return; 5205 default: 5206 break; 5207 } 5208 5209 // finally, send the disconnect command 5210 connection->state = SENT_DISCONNECT; 5211 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5212 return; 5213 } 5214 5215 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5216 // stop BIGs and BIG Syncs 5217 if (hci_stack->le_audio_bigs != NULL){ 5218 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5219 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5220 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5221 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5222 return; 5223 } 5224 if (hci_stack->le_audio_big_syncs != NULL){ 5225 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5226 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5227 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5228 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5229 return; 5230 } 5231 #endif 5232 5233 btstack_run_loop_remove_timer(&hci_stack->timeout); 5234 5235 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5236 log_info("HCI_STATE_HALTING: wait 50 ms"); 5237 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5238 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5239 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5240 btstack_run_loop_add_timer(&hci_stack->timeout); 5241 break; 5242 5243 case HCI_HALTING_W4_CLOSE_TIMER: 5244 // keep waiting 5245 break; 5246 5247 case HCI_HALTING_CLOSE: 5248 // close left over connections (that had not been properly closed before) 5249 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5250 hci_discard_connections(); 5251 5252 log_info("HCI_STATE_HALTING, calling off"); 5253 5254 // switch mode 5255 hci_power_control_off(); 5256 5257 log_info("HCI_STATE_HALTING, emitting state"); 5258 hci_emit_state(); 5259 log_info("HCI_STATE_HALTING, done"); 5260 break; 5261 5262 default: 5263 break; 5264 } 5265 }; 5266 5267 static void hci_falling_asleep_run(void){ 5268 hci_connection_t * connection; 5269 switch(hci_stack->substate) { 5270 case HCI_FALLING_ASLEEP_DISCONNECT: 5271 log_info("HCI_STATE_FALLING_ASLEEP"); 5272 // close all open connections 5273 connection = (hci_connection_t *) hci_stack->connections; 5274 if (connection){ 5275 5276 // send disconnect 5277 if (!hci_can_send_command_packet_now()) return; 5278 5279 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5280 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5281 5282 // send disconnected event right away - causes higher layer connections to get closed, too. 5283 hci_shutdown_connection(connection); 5284 return; 5285 } 5286 5287 if (hci_classic_supported()){ 5288 // disable page and inquiry scan 5289 if (!hci_can_send_command_packet_now()) return; 5290 5291 log_info("HCI_STATE_HALTING, disabling inq scans"); 5292 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5293 5294 // continue in next sub state 5295 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5296 break; 5297 } 5298 5299 /* fall through */ 5300 5301 case HCI_FALLING_ASLEEP_COMPLETE: 5302 log_info("HCI_STATE_HALTING, calling sleep"); 5303 // switch mode 5304 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5305 hci_emit_state(); 5306 break; 5307 5308 default: 5309 break; 5310 } 5311 } 5312 5313 #ifdef ENABLE_CLASSIC 5314 5315 static void hci_update_scan_enable(void){ 5316 // 2 = page scan, 1 = inq scan 5317 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5318 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5319 hci_run(); 5320 } 5321 5322 void gap_discoverable_control(uint8_t enable){ 5323 if (enable) enable = 1; // normalize argument 5324 5325 if (hci_stack->discoverable == enable){ 5326 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5327 return; 5328 } 5329 5330 hci_stack->discoverable = enable; 5331 hci_update_scan_enable(); 5332 } 5333 5334 void gap_connectable_control(uint8_t enable){ 5335 if (enable) enable = 1; // normalize argument 5336 5337 // don't emit event 5338 if (hci_stack->connectable == enable) return; 5339 5340 hci_stack->connectable = enable; 5341 hci_update_scan_enable(); 5342 } 5343 #endif 5344 5345 void gap_local_bd_addr(bd_addr_t address_buffer){ 5346 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5347 } 5348 5349 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5350 static void hci_host_num_completed_packets(void){ 5351 5352 // create packet manually as arrays are not supported and num_commands should not get reduced 5353 hci_reserve_packet_buffer(); 5354 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5355 5356 uint16_t size = 0; 5357 uint16_t num_handles = 0; 5358 packet[size++] = 0x35; 5359 packet[size++] = 0x0c; 5360 size++; // skip param len 5361 size++; // skip num handles 5362 5363 // add { handle, packets } entries 5364 btstack_linked_item_t * it; 5365 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5366 hci_connection_t * connection = (hci_connection_t *) it; 5367 if (connection->num_packets_completed){ 5368 little_endian_store_16(packet, size, connection->con_handle); 5369 size += 2; 5370 little_endian_store_16(packet, size, connection->num_packets_completed); 5371 size += 2; 5372 // 5373 num_handles++; 5374 connection->num_packets_completed = 0; 5375 } 5376 } 5377 5378 packet[2] = size - 3; 5379 packet[3] = num_handles; 5380 5381 hci_stack->host_completed_packets = 0; 5382 5383 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5384 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5385 5386 // release packet buffer for synchronous transport implementations 5387 if (hci_transport_synchronous()){ 5388 hci_release_packet_buffer(); 5389 hci_emit_transport_packet_sent(); 5390 } 5391 } 5392 #endif 5393 5394 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5395 UNUSED(ds); 5396 hci_stack->substate = HCI_HALTING_CLOSE; 5397 hci_halting_run(); 5398 } 5399 5400 static bool hci_run_acl_fragments(void){ 5401 if (hci_stack->acl_fragmentation_total_size > 0u) { 5402 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5403 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5404 if (connection) { 5405 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5406 hci_send_acl_packet_fragments(connection); 5407 return true; 5408 } 5409 } else { 5410 // connection gone -> discard further fragments 5411 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5412 hci_stack->acl_fragmentation_total_size = 0; 5413 hci_stack->acl_fragmentation_pos = 0; 5414 } 5415 } 5416 return false; 5417 } 5418 5419 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5420 static bool hci_run_iso_fragments(void){ 5421 if (hci_stack->iso_fragmentation_total_size > 0u) { 5422 // TODO: flow control 5423 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5424 hci_send_iso_packet_fragments(); 5425 return true; 5426 } 5427 } 5428 return false; 5429 } 5430 #endif 5431 5432 #ifdef ENABLE_CLASSIC 5433 5434 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5435 static bool hci_classic_operation_active(void) { 5436 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5437 return true; 5438 } 5439 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5440 return true; 5441 } 5442 btstack_linked_item_t * it; 5443 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5444 hci_connection_t *connection = (hci_connection_t *) it; 5445 switch (connection->state) { 5446 case SENT_CREATE_CONNECTION: 5447 case SENT_CANCEL_CONNECTION: 5448 case SENT_DISCONNECT: 5449 return true; 5450 default: 5451 break; 5452 } 5453 } 5454 return false; 5455 } 5456 #endif 5457 5458 static bool hci_run_general_gap_classic(void){ 5459 5460 // assert stack is working and classic is active 5461 if (hci_classic_supported() == false) return false; 5462 if (hci_stack->state != HCI_STATE_WORKING) return false; 5463 5464 // decline incoming connections 5465 if (hci_stack->decline_reason){ 5466 uint8_t reason = hci_stack->decline_reason; 5467 hci_stack->decline_reason = 0; 5468 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5469 return true; 5470 } 5471 5472 if (hci_stack->gap_tasks_classic != 0){ 5473 hci_run_gap_tasks_classic(); 5474 return true; 5475 } 5476 5477 // start/stop inquiry 5478 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5479 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5480 if (hci_classic_operation_active() == false) 5481 #endif 5482 { 5483 uint8_t duration = hci_stack->inquiry_state; 5484 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5485 if (hci_stack->inquiry_max_period_length != 0){ 5486 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); 5487 } else { 5488 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5489 } 5490 return true; 5491 } 5492 } 5493 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5494 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5495 hci_send_cmd(&hci_inquiry_cancel); 5496 return true; 5497 } 5498 5499 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5500 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5501 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5502 return true; 5503 } 5504 5505 // remote name request 5506 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5507 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5508 if (hci_classic_operation_active() == false) 5509 #endif 5510 { 5511 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5512 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5513 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5514 return true; 5515 } 5516 } 5517 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5518 // Local OOB data 5519 if (hci_stack->classic_read_local_oob_data){ 5520 hci_stack->classic_read_local_oob_data = false; 5521 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5522 hci_send_cmd(&hci_read_local_extended_oob_data); 5523 } else { 5524 hci_send_cmd(&hci_read_local_oob_data); 5525 } 5526 } 5527 #endif 5528 // pairing 5529 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5530 uint8_t state = hci_stack->gap_pairing_state; 5531 uint8_t pin_code[16]; 5532 switch (state){ 5533 case GAP_PAIRING_STATE_SEND_PIN: 5534 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5535 memset(pin_code, 0, 16); 5536 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5537 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5538 break; 5539 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5540 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5541 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5542 break; 5543 case GAP_PAIRING_STATE_SEND_PASSKEY: 5544 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5545 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5546 break; 5547 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5548 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5549 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5550 break; 5551 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5552 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5553 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5554 break; 5555 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5556 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5557 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5558 break; 5559 default: 5560 break; 5561 } 5562 return true; 5563 } 5564 return false; 5565 } 5566 #endif 5567 5568 #ifdef ENABLE_BLE 5569 5570 #ifdef ENABLE_LE_CENTRAL 5571 static void hci_le_scan_stop(void){ 5572 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5573 if (hci_extended_advertising_supported()) { 5574 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5575 } else 5576 #endif 5577 { 5578 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5579 } 5580 } 5581 5582 static void 5583 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5584 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5585 if (hci_extended_advertising_supported()) { 5586 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 5587 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 5588 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 5589 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 5590 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 5591 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 5592 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 5593 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 5594 hci_send_cmd(&hci_le_extended_create_connection, 5595 initiator_filter_policy, 5596 hci_stack->le_connection_own_addr_type, // our addr type: 5597 address_type, // peer address type 5598 address, // peer bd addr 5599 1, // initiating PHY - 1M 5600 le_connection_scan_interval, // conn scan interval 5601 le_connection_scan_window, // conn scan windows 5602 le_connection_interval_min, // conn interval min 5603 le_connection_interval_max, // conn interval max 5604 le_connection_latency, // conn latency 5605 le_supervision_timeout, // conn latency 5606 le_minimum_ce_length, // min ce length 5607 le_maximum_ce_length // max ce length 5608 ); 5609 } 5610 else 5611 #endif 5612 { 5613 hci_send_cmd(&hci_le_create_connection, 5614 hci_stack->le_connection_scan_interval, // conn scan interval 5615 hci_stack->le_connection_scan_window, // conn scan windows 5616 initiator_filter_policy, // don't use whitelist 5617 address_type, // peer address type 5618 address, // peer bd addr 5619 hci_stack->le_connection_own_addr_type, // our addr type: 5620 hci_stack->le_connection_interval_min, // conn interval min 5621 hci_stack->le_connection_interval_max, // conn interval max 5622 hci_stack->le_connection_latency, // conn latency 5623 hci_stack->le_supervision_timeout, // conn latency 5624 hci_stack->le_minimum_ce_length, // min ce length 5625 hci_stack->le_maximum_ce_length // max ce length 5626 ); 5627 } 5628 } 5629 #endif 5630 5631 #ifdef ENABLE_LE_PERIPHERAL 5632 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5633 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5634 uint8_t operation = 0; 5635 if (pos == 0){ 5636 // first fragment or complete data 5637 operation |= 1; 5638 } 5639 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5640 // last fragment or complete data 5641 operation |= 2; 5642 } 5643 return operation; 5644 } 5645 #endif 5646 #endif 5647 5648 static bool hci_run_general_gap_le(void){ 5649 5650 btstack_linked_list_iterator_t lit; 5651 5652 // Phase 1: collect what to stop 5653 5654 #ifdef ENABLE_LE_CENTRAL 5655 bool scanning_stop = false; 5656 bool connecting_stop = false; 5657 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5658 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5659 bool periodic_sync_stop = false; 5660 #endif 5661 #endif 5662 #endif 5663 5664 #ifdef ENABLE_LE_PERIPHERAL 5665 bool advertising_stop = false; 5666 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5667 le_advertising_set_t * advertising_stop_set = NULL; 5668 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5669 bool periodic_advertising_stop = false; 5670 #endif 5671 #endif 5672 #endif 5673 5674 // check if own address changes 5675 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5676 5677 // check if whitelist needs modification 5678 bool whitelist_modification_pending = false; 5679 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5680 while (btstack_linked_list_iterator_has_next(&lit)){ 5681 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5682 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5683 whitelist_modification_pending = true; 5684 break; 5685 } 5686 } 5687 5688 // check if resolving list needs modification 5689 bool resolving_list_modification_pending = false; 5690 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5691 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5692 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5693 resolving_list_modification_pending = true; 5694 } 5695 #endif 5696 5697 #ifdef ENABLE_LE_CENTRAL 5698 5699 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5700 // check if periodic advertiser list needs modification 5701 bool periodic_list_modification_pending = false; 5702 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5703 while (btstack_linked_list_iterator_has_next(&lit)){ 5704 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5705 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5706 periodic_list_modification_pending = true; 5707 break; 5708 } 5709 } 5710 #endif 5711 5712 // scanning control 5713 if (hci_stack->le_scanning_active) { 5714 // stop if: 5715 // - parameter change required 5716 // - it's disabled 5717 // - whitelist change required but used for scanning 5718 // - resolving list modified 5719 // - own address changes 5720 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5721 if ((hci_stack->le_scanning_param_update) || 5722 !hci_stack->le_scanning_enabled || 5723 (scanning_uses_whitelist && whitelist_modification_pending) || 5724 resolving_list_modification_pending || 5725 random_address_change){ 5726 5727 scanning_stop = true; 5728 } 5729 } 5730 5731 // connecting control 5732 bool connecting_with_whitelist; 5733 switch (hci_stack->le_connecting_state){ 5734 case LE_CONNECTING_DIRECT: 5735 case LE_CONNECTING_WHITELIST: 5736 // stop connecting if: 5737 // - connecting uses white and whitelist modification pending 5738 // - if it got disabled 5739 // - resolving list modified 5740 // - own address changes 5741 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5742 if ((connecting_with_whitelist && whitelist_modification_pending) || 5743 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5744 resolving_list_modification_pending || 5745 random_address_change) { 5746 5747 connecting_stop = true; 5748 } 5749 break; 5750 default: 5751 break; 5752 } 5753 5754 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5755 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5756 // periodic sync control 5757 bool sync_with_advertiser_list; 5758 switch(hci_stack->le_periodic_sync_state){ 5759 case LE_CONNECTING_DIRECT: 5760 case LE_CONNECTING_WHITELIST: 5761 // stop sync if: 5762 // - sync with advertiser list and advertiser list modification pending 5763 // - if it got disabled 5764 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5765 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5766 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5767 periodic_sync_stop = true; 5768 } 5769 break; 5770 default: 5771 break; 5772 } 5773 #endif 5774 #endif 5775 5776 #endif /* ENABLE_LE_CENTRAL */ 5777 5778 #ifdef ENABLE_LE_PERIPHERAL 5779 // le advertisement control 5780 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5781 // stop if: 5782 // - parameter change required 5783 // - random address used in advertising and changes 5784 // - it's disabled 5785 // - whitelist change required but used for advertisement filter policy 5786 // - resolving list modified 5787 // - own address changes 5788 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5789 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5790 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5791 if (advertising_change || 5792 (advertising_uses_random_address && random_address_change) || 5793 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5794 (advertising_uses_whitelist && whitelist_modification_pending) || 5795 resolving_list_modification_pending || 5796 random_address_change) { 5797 5798 advertising_stop = true; 5799 } 5800 } 5801 5802 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5803 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5804 btstack_linked_list_iterator_t it; 5805 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5806 while (btstack_linked_list_iterator_has_next(&it)){ 5807 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5808 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5809 // stop if: 5810 // - parameter change required 5811 // - random address used in connectable advertising and changes 5812 // - it's disabled 5813 // - whitelist change required but used for advertisement filter policy 5814 // - resolving list modified 5815 // - own address changes 5816 // - advertisement set will be removed 5817 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5818 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5819 bool advertising_uses_random_address = 5820 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5821 advertising_connectable; 5822 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5823 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5824 bool advertising_set_random_address_change = 5825 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5826 bool advertising_set_will_be_removed = 5827 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5828 if (advertising_parameter_change || 5829 (advertising_uses_random_address && advertising_set_random_address_change) || 5830 (advertising_enabled == false) || 5831 (advertising_uses_whitelist && whitelist_modification_pending) || 5832 resolving_list_modification_pending || 5833 advertising_set_will_be_removed) { 5834 5835 advertising_stop = true; 5836 advertising_stop_set = advertising_set; 5837 break; 5838 } 5839 } 5840 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5841 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5842 // stop if: 5843 // - it's disabled 5844 // - parameter change required 5845 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5846 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5847 if ((periodic_enabled == false) || periodic_parameter_change){ 5848 periodic_advertising_stop = true; 5849 advertising_stop_set = advertising_set; 5850 } 5851 } 5852 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5853 } 5854 } 5855 #endif 5856 5857 #endif 5858 5859 5860 // Phase 2: stop everything that should be off during modifications 5861 5862 5863 // 2.1 Outgoing connection 5864 #ifdef ENABLE_LE_CENTRAL 5865 if (connecting_stop){ 5866 hci_send_cmd(&hci_le_create_connection_cancel); 5867 return true; 5868 } 5869 #endif 5870 5871 // 2.2 Scanning 5872 #ifdef ENABLE_LE_CENTRAL 5873 if (scanning_stop){ 5874 hci_stack->le_scanning_active = false; 5875 hci_le_scan_stop(); 5876 return true; 5877 } 5878 5879 // 2.3 Periodic Sync 5880 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5881 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5882 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5883 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5884 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5885 return true; 5886 } 5887 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5888 if (periodic_sync_stop){ 5889 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5890 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5891 return true; 5892 } 5893 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5894 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5895 #endif /* ENABLE_LE_CENTRAL */ 5896 5897 // 2.4 Advertising: legacy, extended, periodic 5898 #ifdef ENABLE_LE_PERIPHERAL 5899 if (advertising_stop){ 5900 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5901 if (hci_extended_advertising_supported()) { 5902 uint8_t advertising_stop_handle; 5903 if (advertising_stop_set != NULL){ 5904 advertising_stop_handle = advertising_stop_set->advertising_handle; 5905 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5906 } else { 5907 advertising_stop_handle = 0; 5908 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5909 } 5910 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5911 const uint16_t durations[] = { 0 }; 5912 const uint16_t max_events[] = { 0 }; 5913 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5914 } else 5915 #endif 5916 { 5917 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5918 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5919 } 5920 return true; 5921 } 5922 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5923 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5924 if (periodic_advertising_stop){ 5925 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5926 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5927 return true; 5928 } 5929 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5930 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5931 #endif /* ENABLE_LE_PERIPHERAL */ 5932 5933 5934 // Phase 3: modify 5935 5936 if (random_address_change){ 5937 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5938 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5939 if (hci_extended_advertising_supported()) { 5940 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5941 } 5942 #endif 5943 { 5944 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5945 } 5946 return true; 5947 } 5948 5949 #ifdef ENABLE_LE_CENTRAL 5950 if (hci_stack->le_scanning_param_update){ 5951 hci_stack->le_scanning_param_update = false; 5952 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5953 if (hci_extended_advertising_supported()){ 5954 // prepare arrays for all PHYs 5955 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5956 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5957 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5958 uint8_t scanning_phys = 1; // LE 1M PHY 5959 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5960 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5961 } else 5962 #endif 5963 { 5964 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5965 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5966 } 5967 return true; 5968 } 5969 #endif 5970 5971 #ifdef ENABLE_LE_PERIPHERAL 5972 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5973 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5974 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5975 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5976 if (hci_extended_advertising_supported()){ 5977 // map advertisment type to advertising event properties 5978 uint16_t adv_event_properties = 0; 5979 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5980 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5981 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5982 } 5983 hci_stack->le_advertising_set_in_current_command = 0; 5984 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5985 0, 5986 adv_event_properties, 5987 hci_stack->le_advertisements_interval_min, 5988 hci_stack->le_advertisements_interval_max, 5989 hci_stack->le_advertisements_channel_map, 5990 hci_stack->le_advertisements_own_addr_type, 5991 hci_stack->le_advertisements_direct_address_type, 5992 hci_stack->le_advertisements_direct_address, 5993 hci_stack->le_advertisements_filter_policy, 5994 0x7f, // tx power: no preference 5995 0x01, // primary adv phy: LE 1M 5996 0, // secondary adv max skip 5997 0, // secondary adv phy 5998 0, // adv sid 5999 0 // scan request notification 6000 ); 6001 } 6002 #endif 6003 { 6004 hci_send_cmd(&hci_le_set_advertising_parameters, 6005 hci_stack->le_advertisements_interval_min, 6006 hci_stack->le_advertisements_interval_max, 6007 hci_stack->le_advertisements_type, 6008 hci_stack->le_advertisements_own_addr_type, 6009 hci_stack->le_advertisements_direct_address_type, 6010 hci_stack->le_advertisements_direct_address, 6011 hci_stack->le_advertisements_channel_map, 6012 hci_stack->le_advertisements_filter_policy); 6013 } 6014 return true; 6015 } 6016 6017 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6018 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6019 uint8_t adv_data_clean[31]; 6020 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6021 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6022 hci_stack->le_advertisements_data_len); 6023 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6024 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6025 if (hci_extended_advertising_supported()){ 6026 hci_stack->le_advertising_set_in_current_command = 0; 6027 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6028 } else 6029 #endif 6030 { 6031 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6032 } 6033 return true; 6034 } 6035 6036 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6037 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6038 uint8_t scan_data_clean[31]; 6039 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6040 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6041 hci_stack->le_scan_response_data_len); 6042 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6043 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6044 if (hci_extended_advertising_supported()){ 6045 hci_stack->le_advertising_set_in_current_command = 0; 6046 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6047 } else 6048 #endif 6049 { 6050 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6051 } 6052 return true; 6053 } 6054 6055 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6056 if (hci_extended_advertising_supported()) { 6057 btstack_linked_list_iterator_t it; 6058 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6059 while (btstack_linked_list_iterator_has_next(&it)){ 6060 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6061 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6062 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6063 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6064 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6065 return true; 6066 } 6067 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6068 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6069 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6070 return true; 6071 } 6072 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6073 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6074 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6075 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6076 advertising_set->advertising_handle, 6077 advertising_set->extended_params.advertising_event_properties, 6078 advertising_set->extended_params.primary_advertising_interval_min, 6079 advertising_set->extended_params.primary_advertising_interval_max, 6080 advertising_set->extended_params.primary_advertising_channel_map, 6081 advertising_set->extended_params.own_address_type, 6082 advertising_set->extended_params.peer_address_type, 6083 advertising_set->extended_params.peer_address, 6084 advertising_set->extended_params.advertising_filter_policy, 6085 advertising_set->extended_params.advertising_tx_power, 6086 advertising_set->extended_params.primary_advertising_phy, 6087 advertising_set->extended_params.secondary_advertising_max_skip, 6088 advertising_set->extended_params.secondary_advertising_phy, 6089 advertising_set->extended_params.advertising_sid, 6090 advertising_set->extended_params.scan_request_notification_enable 6091 ); 6092 return true; 6093 } 6094 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6095 uint16_t pos = advertising_set->adv_data_pos; 6096 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6097 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6098 if ((operation & 0x02) != 0){ 6099 // last fragment or complete data 6100 operation |= 2; 6101 advertising_set->adv_data_pos = 0; 6102 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6103 } else { 6104 advertising_set->adv_data_pos += data_to_upload; 6105 } 6106 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6107 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6108 return true; 6109 } 6110 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6111 uint16_t pos = advertising_set->scan_data_pos; 6112 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6113 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6114 if ((operation & 0x02) != 0){ 6115 advertising_set->scan_data_pos = 0; 6116 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6117 } else { 6118 advertising_set->scan_data_pos += data_to_upload; 6119 } 6120 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6121 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6122 return true; 6123 } 6124 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6125 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6126 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6127 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6128 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6129 advertising_set->advertising_handle, 6130 advertising_set->periodic_params.periodic_advertising_interval_min, 6131 advertising_set->periodic_params.periodic_advertising_interval_max, 6132 advertising_set->periodic_params.periodic_advertising_properties); 6133 return true; 6134 } 6135 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6136 uint16_t pos = advertising_set->periodic_data_pos; 6137 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6138 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6139 if ((operation & 0x02) != 0){ 6140 // last fragment or complete data 6141 operation |= 2; 6142 advertising_set->periodic_data_pos = 0; 6143 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6144 } else { 6145 advertising_set->periodic_data_pos += data_to_upload; 6146 } 6147 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6148 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6149 return true; 6150 } 6151 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6152 } 6153 } 6154 #endif 6155 6156 #endif 6157 6158 #ifdef ENABLE_LE_CENTRAL 6159 // if connect with whitelist was active and is not cancelled yet, wait until next time 6160 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6161 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6162 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6163 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6164 #endif 6165 #endif 6166 6167 // LE Whitelist Management 6168 if (whitelist_modification_pending){ 6169 // add/remove entries 6170 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6171 while (btstack_linked_list_iterator_has_next(&lit)){ 6172 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6173 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6174 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6175 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6176 return true; 6177 } 6178 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6179 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6180 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6181 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6182 return true; 6183 } 6184 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6185 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6186 btstack_memory_whitelist_entry_free(entry); 6187 } 6188 } 6189 } 6190 6191 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6192 // LE Resolving List Management 6193 if (resolving_list_supported) { 6194 uint16_t i; 6195 switch (hci_stack->le_resolving_list_state) { 6196 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6197 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6198 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6199 return true; 6200 case LE_RESOLVING_LIST_READ_SIZE: 6201 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6202 hci_send_cmd(&hci_le_read_resolving_list_size); 6203 return true; 6204 case LE_RESOLVING_LIST_SEND_CLEAR: 6205 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6206 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6207 sizeof(hci_stack->le_resolving_list_add_entries)); 6208 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6209 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6210 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6211 sizeof(hci_stack->le_resolving_list_remove_entries)); 6212 hci_send_cmd(&hci_le_clear_resolving_list); 6213 return true; 6214 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6215 // first remove old entries 6216 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6217 uint8_t offset = i >> 3; 6218 uint8_t mask = 1 << (i & 7); 6219 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6220 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6221 bd_addr_t peer_identity_addreses; 6222 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6223 sm_key_t peer_irk; 6224 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6225 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6226 6227 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6228 // trigger whitelist entry 'update' (work around for controller bug) 6229 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6230 while (btstack_linked_list_iterator_has_next(&lit)) { 6231 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6232 if (entry->address_type != peer_identity_addr_type) continue; 6233 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6234 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6235 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6236 } 6237 #endif 6238 6239 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6240 peer_identity_addreses); 6241 return true; 6242 } 6243 6244 // then add new entries 6245 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6246 uint8_t offset = i >> 3; 6247 uint8_t mask = 1 << (i & 7); 6248 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6249 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6250 bd_addr_t peer_identity_addreses; 6251 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6252 sm_key_t peer_irk; 6253 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6254 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6255 if (btstack_is_null(peer_irk, 16)) continue; 6256 const uint8_t *local_irk = gap_get_persistent_irk(); 6257 // command uses format specifier 'P' that stores 16-byte value without flip 6258 uint8_t local_irk_flipped[16]; 6259 uint8_t peer_irk_flipped[16]; 6260 reverse_128(local_irk, local_irk_flipped); 6261 reverse_128(peer_irk, peer_irk_flipped); 6262 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6263 peer_irk_flipped, local_irk_flipped); 6264 return true; 6265 } 6266 6267 // finally, set privacy mode 6268 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6269 uint8_t offset = i >> 3; 6270 uint8_t mask = 1 << (i & 7); 6271 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6272 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6273 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6274 // Network Privacy Mode is default 6275 continue; 6276 } 6277 bd_addr_t peer_identity_address; 6278 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6279 sm_key_t peer_irk; 6280 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6281 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6282 if (btstack_is_null(peer_irk, 16)) continue; 6283 // command uses format specifier 'P' that stores 16-byte value without flip 6284 uint8_t peer_irk_flipped[16]; 6285 reverse_128(peer_irk, peer_irk_flipped); 6286 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6287 return true; 6288 } 6289 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6290 break; 6291 6292 default: 6293 break; 6294 } 6295 } 6296 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6297 #endif 6298 6299 #ifdef ENABLE_LE_CENTRAL 6300 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6301 // LE Whitelist Management 6302 if (periodic_list_modification_pending){ 6303 // add/remove entries 6304 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6305 while (btstack_linked_list_iterator_has_next(&lit)){ 6306 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6307 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6308 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6309 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6310 return true; 6311 } 6312 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6313 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6314 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6315 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6316 return true; 6317 } 6318 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6319 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6320 btstack_memory_periodic_advertiser_list_entry_free(entry); 6321 } 6322 } 6323 } 6324 #endif 6325 #endif 6326 6327 #ifdef ENABLE_LE_CENTRAL 6328 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6329 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6330 if (hci_stack->le_past_set_default_params){ 6331 hci_stack->le_past_set_default_params = false; 6332 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6333 hci_stack->le_past_mode, 6334 hci_stack->le_past_skip, 6335 hci_stack->le_past_sync_timeout, 6336 hci_stack->le_past_cte_type); 6337 return true; 6338 } 6339 #endif 6340 #endif 6341 #endif 6342 6343 // post-pone all actions until stack is fully working 6344 if (hci_stack->state != HCI_STATE_WORKING) return false; 6345 6346 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6347 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6348 6349 // Phase 4: restore state 6350 6351 #ifdef ENABLE_LE_CENTRAL 6352 // re-start scanning 6353 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6354 hci_stack->le_scanning_active = true; 6355 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6356 if (hci_extended_advertising_supported()){ 6357 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6358 } else 6359 #endif 6360 { 6361 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6362 } 6363 return true; 6364 } 6365 #endif 6366 6367 #ifdef ENABLE_LE_CENTRAL 6368 // re-start connecting 6369 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6370 bd_addr_t null_addr; 6371 memset(null_addr, 0, 6); 6372 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6373 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6374 hci_send_le_create_connection(1, 0, null_addr); 6375 return true; 6376 } 6377 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6378 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6379 switch(hci_stack->le_periodic_sync_request){ 6380 case LE_CONNECTING_DIRECT: 6381 case LE_CONNECTING_WHITELIST: 6382 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6383 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6384 hci_stack->le_periodic_sync_options, 6385 hci_stack->le_periodic_sync_advertising_sid, 6386 hci_stack->le_periodic_sync_advertiser_address_type, 6387 hci_stack->le_periodic_sync_advertiser_address, 6388 hci_stack->le_periodic_sync_skip, 6389 hci_stack->le_periodic_sync_timeout, 6390 hci_stack->le_periodic_sync_cte_type); 6391 return true; 6392 default: 6393 break; 6394 } 6395 } 6396 #endif 6397 #endif 6398 6399 #ifdef ENABLE_LE_PERIPHERAL 6400 // re-start advertising 6401 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6402 // check if advertisements should be enabled given 6403 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6404 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6405 6406 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6407 if (hci_extended_advertising_supported()){ 6408 const uint8_t advertising_handles[] = { 0 }; 6409 const uint16_t durations[] = { 0 }; 6410 const uint16_t max_events[] = { 0 }; 6411 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6412 } else 6413 #endif 6414 { 6415 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6416 } 6417 return true; 6418 } 6419 6420 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6421 if (hci_extended_advertising_supported()) { 6422 btstack_linked_list_iterator_t it; 6423 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6424 while (btstack_linked_list_iterator_has_next(&it)) { 6425 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6426 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6427 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6428 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6429 const uint16_t durations[] = { advertising_set->enable_timeout }; 6430 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6431 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6432 return true; 6433 } 6434 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6435 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6436 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6437 uint8_t enable = 1; 6438 if (advertising_set->periodic_include_adi){ 6439 enable |= 2; 6440 } 6441 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6442 return true; 6443 } 6444 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6445 } 6446 } 6447 #endif 6448 #endif 6449 6450 return false; 6451 } 6452 6453 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6454 static bool hci_run_iso_tasks(void){ 6455 btstack_linked_list_iterator_t it; 6456 6457 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6458 return false; 6459 } 6460 6461 // BIG 6462 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6463 while (btstack_linked_list_iterator_has_next(&it)){ 6464 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6465 switch (big->state){ 6466 case LE_AUDIO_BIG_STATE_CREATE: 6467 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6468 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6469 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6470 hci_send_cmd(&hci_le_create_big, 6471 big->params->big_handle, 6472 big->params->advertising_handle, 6473 big->params->num_bis, 6474 big->params->sdu_interval_us, 6475 big->params->max_sdu, 6476 big->params->max_transport_latency_ms, 6477 big->params->rtn, 6478 big->params->phy, 6479 big->params->packing, 6480 big->params->framing, 6481 big->params->encryption, 6482 big->params->broadcast_code); 6483 return true; 6484 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6485 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6486 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, 0, 0, 0, 0, 0, NULL); 6487 return true; 6488 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6489 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6490 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6491 return true; 6492 case LE_AUDIO_BIG_STATE_TERMINATE: 6493 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6494 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6495 return true; 6496 default: 6497 break; 6498 } 6499 } 6500 6501 // BIG Sync 6502 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6503 while (btstack_linked_list_iterator_has_next(&it)){ 6504 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6505 switch (big_sync->state){ 6506 case LE_AUDIO_BIG_STATE_CREATE: 6507 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6508 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6509 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6510 hci_send_cmd(&hci_le_big_create_sync, 6511 big_sync->params->big_handle, 6512 big_sync->params->sync_handle, 6513 big_sync->params->encryption, 6514 big_sync->params->broadcast_code, 6515 big_sync->params->mse, 6516 big_sync->params->big_sync_timeout_10ms, 6517 big_sync->params->num_bis, 6518 big_sync->params->bis_indices); 6519 return true; 6520 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6521 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6522 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, 0, 0, 0, 0, 0, NULL); 6523 return true; 6524 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6525 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6526 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6527 return true; 6528 case LE_AUDIO_BIG_STATE_TERMINATE: 6529 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6530 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6531 return true; 6532 default: 6533 break; 6534 } 6535 } 6536 6537 // CIG 6538 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6539 while (btstack_linked_list_iterator_has_next(&it)) { 6540 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6541 uint8_t i; 6542 // Set CIG Parameters 6543 uint8_t cis_id[MAX_NR_CIS]; 6544 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6545 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6546 uint8_t phy_c_to_p[MAX_NR_CIS]; 6547 uint8_t phy_p_to_c[MAX_NR_CIS]; 6548 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6549 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6550 switch (cig->state) { 6551 case LE_AUDIO_CIG_STATE_CREATE: 6552 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6553 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6554 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6555 le_audio_cig_params_t * params = cig->params; 6556 for (i = 0; i < params->num_cis; i++) { 6557 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6558 cis_id[i] = cis_params->cis_id; 6559 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6560 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6561 phy_c_to_p[i] = cis_params->phy_c_to_p; 6562 phy_p_to_c[i] = cis_params->phy_p_to_c; 6563 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6564 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6565 } 6566 hci_send_cmd(&hci_le_set_cig_parameters, 6567 cig->cig_id, 6568 params->sdu_interval_c_to_p, 6569 params->sdu_interval_p_to_c, 6570 params->worst_case_sca, 6571 params->packing, 6572 params->framing, 6573 params->max_transport_latency_c_to_p, 6574 params->max_transport_latency_p_to_c, 6575 params->num_cis, 6576 cis_id, 6577 max_sdu_c_to_p, 6578 max_sdu_p_to_c, 6579 phy_c_to_p, 6580 phy_p_to_c, 6581 rtn_c_to_p, 6582 rtn_p_to_c 6583 ); 6584 return true; 6585 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6586 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6587 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6588 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6589 for (i=0;i<cig->num_cis;i++){ 6590 cig->cis_setup_active[i] = true; 6591 } 6592 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6593 return true; 6594 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6595 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6596 // find next path to setup 6597 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6598 if (cig->cis_established[cis_index] == false) { 6599 continue; 6600 } 6601 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6602 bool setup = true; 6603 if (cis_direction == 0){ 6604 // 0 - input - host to controller 6605 // we are central => central to peripheral 6606 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6607 } else { 6608 // 1 - output - controller to host 6609 // we are central => peripheral to central 6610 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6611 } 6612 if (setup){ 6613 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6614 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6615 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6616 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6617 return true; 6618 } 6619 cig->state_vars.next_cis++; 6620 } 6621 // emit done 6622 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6623 default: 6624 break; 6625 } 6626 } 6627 6628 // CIS Accept/Reject 6629 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6630 while (btstack_linked_list_iterator_has_next(&it)) { 6631 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6632 hci_con_handle_t con_handle; 6633 switch (iso_stream->state){ 6634 case HCI_ISO_STREAM_W2_ACCEPT: 6635 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6636 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6637 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6638 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->con_handle); 6639 return true; 6640 case HCI_ISO_STREAM_W2_REJECT: 6641 con_handle = iso_stream->con_handle; 6642 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6643 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6644 hci_iso_stream_finalize(iso_stream); 6645 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6646 return true; 6647 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6648 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6649 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6650 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6651 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6652 break; 6653 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6654 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6655 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6656 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6657 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6658 break; 6659 default: 6660 break; 6661 } 6662 } 6663 6664 return false; 6665 } 6666 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6667 #endif 6668 6669 static bool hci_run_general_pending_commands(void){ 6670 btstack_linked_item_t * it; 6671 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6672 hci_connection_t * connection = (hci_connection_t *) it; 6673 6674 switch(connection->state){ 6675 case SEND_CREATE_CONNECTION: 6676 switch(connection->address_type){ 6677 #ifdef ENABLE_CLASSIC 6678 case BD_ADDR_TYPE_ACL: 6679 log_info("sending hci_create_connection"); 6680 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6681 break; 6682 #endif 6683 default: 6684 #ifdef ENABLE_BLE 6685 #ifdef ENABLE_LE_CENTRAL 6686 log_info("sending hci_le_create_connection"); 6687 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6688 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6689 hci_send_le_create_connection(0, connection->address_type, connection->address); 6690 connection->state = SENT_CREATE_CONNECTION; 6691 #endif 6692 #endif 6693 break; 6694 } 6695 return true; 6696 6697 #ifdef ENABLE_CLASSIC 6698 case RECEIVED_CONNECTION_REQUEST: 6699 connection->role = HCI_ROLE_SLAVE; 6700 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6701 log_info("sending hci_accept_connection_request"); 6702 connection->state = ACCEPTED_CONNECTION_REQUEST; 6703 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6704 return true; 6705 } 6706 break; 6707 #endif 6708 case SEND_DISCONNECT: 6709 connection->state = SENT_DISCONNECT; 6710 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6711 return true; 6712 6713 default: 6714 break; 6715 } 6716 6717 // no further commands if connection is about to get shut down 6718 if (connection->state == SENT_DISCONNECT) continue; 6719 6720 #ifdef ENABLE_CLASSIC 6721 6722 // Handling link key request requires remote supported features 6723 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6724 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6725 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6726 6727 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6728 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6729 if (have_link_key && security_level_sufficient){ 6730 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6731 } else { 6732 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6733 } 6734 return true; 6735 } 6736 6737 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6738 log_info("denying to pin request"); 6739 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6740 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6741 return true; 6742 } 6743 6744 // security assessment requires remote features 6745 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6746 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6747 hci_ssp_assess_security_on_io_cap_request(connection); 6748 // 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 6749 } 6750 6751 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6752 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6753 // set authentication requirements: 6754 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6755 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6756 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6757 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6758 authreq |= 1; 6759 } 6760 bool bonding = hci_stack->bondable; 6761 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6762 // if we have received IO Cap Response, we're in responder role 6763 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6764 if (bonding && !remote_bonding){ 6765 log_info("Remote not bonding, dropping local flag"); 6766 bonding = false; 6767 } 6768 } 6769 if (bonding){ 6770 if (connection->bonding_flags & BONDING_DEDICATED){ 6771 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6772 } else { 6773 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6774 } 6775 } 6776 uint8_t have_oob_data = 0; 6777 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6778 if (connection->classic_oob_c_192 != NULL){ 6779 have_oob_data |= 1; 6780 } 6781 if (connection->classic_oob_c_256 != NULL){ 6782 have_oob_data |= 2; 6783 } 6784 #endif 6785 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6786 return true; 6787 } 6788 6789 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6790 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6791 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6792 return true; 6793 } 6794 6795 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6796 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6797 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6798 const uint8_t zero[16] = { 0 }; 6799 const uint8_t * r_192 = zero; 6800 const uint8_t * c_192 = zero; 6801 const uint8_t * r_256 = zero; 6802 const uint8_t * c_256 = zero; 6803 // verify P-256 OOB 6804 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6805 c_256 = connection->classic_oob_c_256; 6806 if (connection->classic_oob_r_256 != NULL) { 6807 r_256 = connection->classic_oob_r_256; 6808 } 6809 } 6810 // verify P-192 OOB 6811 if ((connection->classic_oob_c_192 != NULL)) { 6812 c_192 = connection->classic_oob_c_192; 6813 if (connection->classic_oob_r_192 != NULL) { 6814 r_192 = connection->classic_oob_r_192; 6815 } 6816 } 6817 6818 // assess security 6819 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6820 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6821 if (need_level_4 && !can_reach_level_4){ 6822 log_info("Level 4 required, but not possible -> abort"); 6823 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6824 // send oob negative reply 6825 c_256 = NULL; 6826 c_192 = NULL; 6827 } 6828 6829 // Reply 6830 if (c_256 != zero) { 6831 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6832 } else if (c_192 != zero){ 6833 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6834 } else { 6835 hci_stack->classic_oob_con_handle = connection->con_handle; 6836 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6837 } 6838 return true; 6839 } 6840 #endif 6841 6842 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6843 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6844 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6845 return true; 6846 } 6847 6848 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6849 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6850 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6851 return true; 6852 } 6853 6854 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6855 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6856 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6857 return true; 6858 } 6859 6860 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6861 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6862 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6863 connection->state = SENT_DISCONNECT; 6864 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6865 return true; 6866 } 6867 6868 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6869 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6870 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6871 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6872 return true; 6873 } 6874 6875 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6876 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6877 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6878 return true; 6879 } 6880 6881 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6882 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6883 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6884 return true; 6885 } 6886 6887 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6888 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6889 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6890 return true; 6891 } 6892 6893 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6894 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6895 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6896 return true; 6897 } 6898 6899 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6900 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6901 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6902 return true; 6903 } 6904 #endif 6905 6906 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6907 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6908 #ifdef ENABLE_CLASSIC 6909 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6910 #endif 6911 if (connection->state != SENT_DISCONNECT){ 6912 connection->state = SENT_DISCONNECT; 6913 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6914 return true; 6915 } 6916 } 6917 6918 #ifdef ENABLE_CLASSIC 6919 uint16_t sniff_min_interval; 6920 switch (connection->sniff_min_interval){ 6921 case 0: 6922 break; 6923 case 0xffff: 6924 connection->sniff_min_interval = 0; 6925 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6926 return true; 6927 default: 6928 sniff_min_interval = connection->sniff_min_interval; 6929 connection->sniff_min_interval = 0; 6930 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6931 return true; 6932 } 6933 6934 if (connection->sniff_subrating_max_latency != 0xffff){ 6935 uint16_t max_latency = connection->sniff_subrating_max_latency; 6936 connection->sniff_subrating_max_latency = 0; 6937 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6938 return true; 6939 } 6940 6941 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6942 uint8_t service_type = (uint8_t) connection->qos_service_type; 6943 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6944 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); 6945 return true; 6946 } 6947 6948 if (connection->request_role != HCI_ROLE_INVALID){ 6949 hci_role_t role = connection->request_role; 6950 connection->request_role = HCI_ROLE_INVALID; 6951 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6952 return true; 6953 } 6954 #endif 6955 6956 if (connection->gap_connection_tasks != 0){ 6957 #ifdef ENABLE_CLASSIC 6958 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6959 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6960 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6961 return true; 6962 } 6963 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6964 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6965 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6966 return true; 6967 } 6968 #endif 6969 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6970 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6971 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6972 return true; 6973 } 6974 #ifdef ENABLE_BLE 6975 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 6976 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 6977 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 6978 return true; 6979 } 6980 #endif 6981 } 6982 6983 #ifdef ENABLE_BLE 6984 switch (connection->le_con_parameter_update_state){ 6985 // response to L2CAP CON PARAMETER UPDATE REQUEST 6986 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6987 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6988 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6989 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6990 0x0000, 0xffff); 6991 return true; 6992 case CON_PARAMETER_UPDATE_REPLY: 6993 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6994 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6995 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6996 0x0000, 0xffff); 6997 return true; 6998 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6999 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7000 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7001 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7002 return true; 7003 default: 7004 break; 7005 } 7006 if (connection->le_phy_update_all_phys != 0xffu){ 7007 uint8_t all_phys = connection->le_phy_update_all_phys; 7008 connection->le_phy_update_all_phys = 0xff; 7009 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); 7010 return true; 7011 } 7012 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7013 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7014 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7015 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7016 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7017 return true; 7018 } 7019 #endif 7020 #endif 7021 } 7022 return false; 7023 } 7024 7025 static void hci_run(void){ 7026 7027 // stack state sub statemachines 7028 switch (hci_stack->state) { 7029 case HCI_STATE_INITIALIZING: 7030 hci_initializing_run(); 7031 break; 7032 case HCI_STATE_HALTING: 7033 hci_halting_run(); 7034 break; 7035 case HCI_STATE_FALLING_ASLEEP: 7036 hci_falling_asleep_run(); 7037 break; 7038 default: 7039 break; 7040 } 7041 7042 // allow to run after initialization to working transition 7043 if (hci_stack->state != HCI_STATE_WORKING){ 7044 return; 7045 } 7046 7047 bool done; 7048 7049 // send continuation fragments first, as they block the prepared packet buffer 7050 done = hci_run_acl_fragments(); 7051 if (done) return; 7052 7053 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7054 done = hci_run_iso_fragments(); 7055 if (done) return; 7056 #endif 7057 7058 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7059 // send host num completed packets next as they don't require num_cmd_packets > 0 7060 if (!hci_can_send_comand_packet_transport()) return; 7061 if (hci_stack->host_completed_packets){ 7062 hci_host_num_completed_packets(); 7063 return; 7064 } 7065 #endif 7066 7067 if (!hci_can_send_command_packet_now()) return; 7068 7069 // global/non-connection oriented commands 7070 7071 7072 #ifdef ENABLE_CLASSIC 7073 // general gap classic 7074 done = hci_run_general_gap_classic(); 7075 if (done) return; 7076 #endif 7077 7078 #ifdef ENABLE_BLE 7079 // general gap le 7080 done = hci_run_general_gap_le(); 7081 if (done) return; 7082 7083 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7084 // ISO related tasks, e.g. BIG create/terminate/sync 7085 done = hci_run_iso_tasks(); 7086 if (done) return; 7087 #endif 7088 #endif 7089 7090 // send pending HCI commands 7091 hci_run_general_pending_commands(); 7092 } 7093 7094 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7095 // house-keeping 7096 7097 #ifdef ENABLE_CLASSIC 7098 bd_addr_t addr; 7099 hci_connection_t * conn; 7100 #endif 7101 #ifdef ENABLE_LE_CENTRAL 7102 uint8_t initiator_filter_policy; 7103 #endif 7104 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7105 uint8_t i; 7106 uint8_t num_cis; 7107 hci_con_handle_t cis_handle; 7108 uint8_t status; 7109 #endif 7110 7111 uint16_t opcode = little_endian_read_16(packet, 0); 7112 switch (opcode) { 7113 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7114 hci_stack->loopback_mode = packet[3]; 7115 break; 7116 7117 #ifdef ENABLE_CLASSIC 7118 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7119 reverse_bd_addr(&packet[3], addr); 7120 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7121 7122 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7123 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7124 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7125 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7126 } 7127 7128 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7129 if (!conn) { 7130 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7131 if (!conn) { 7132 // notify client that alloc failed 7133 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7134 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7135 } 7136 conn->state = SEND_CREATE_CONNECTION; 7137 conn->role = HCI_ROLE_MASTER; 7138 } 7139 7140 log_info("conn state %u", conn->state); 7141 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7142 switch (conn->state) { 7143 // if connection active exists 7144 case OPEN: 7145 // and OPEN, emit connection complete command 7146 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7147 // packet not sent to controller 7148 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7149 case RECEIVED_DISCONNECTION_COMPLETE: 7150 // create connection triggered in disconnect complete event, let's do it now 7151 break; 7152 case SEND_CREATE_CONNECTION: 7153 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7154 if (hci_classic_operation_active()){ 7155 return ERROR_CODE_SUCCESS; 7156 } 7157 #endif 7158 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7159 break; 7160 default: 7161 // otherwise, just ignore as it is already in the open process 7162 // packet not sent to controller 7163 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7164 } 7165 conn->state = SENT_CREATE_CONNECTION; 7166 7167 // track outgoing connection 7168 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7169 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7170 break; 7171 7172 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7173 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7174 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7175 if (conn == NULL) { 7176 // neither SCO nor ACL connection for con handle 7177 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7178 } else { 7179 switch (conn->address_type){ 7180 case BD_ADDR_TYPE_ACL: 7181 // assert SCO connection does not exit 7182 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7183 return ERROR_CODE_COMMAND_DISALLOWED; 7184 } 7185 // allocate connection struct 7186 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO); 7187 if (!conn) { 7188 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7189 } 7190 conn->role = HCI_ROLE_MASTER; 7191 break; 7192 case BD_ADDR_TYPE_SCO: 7193 // update of existing SCO connection 7194 break; 7195 default: 7196 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7197 } 7198 } 7199 7200 // conn refers to hci connection of type sco now 7201 7202 conn->state = SENT_CREATE_CONNECTION; 7203 7204 // track outgoing connection to handle command status with error 7205 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7206 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7207 7208 // setup_synchronous_connection? Voice setting at offset 22 7209 // TODO: compare to current setting if sco connection already active 7210 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7211 break; 7212 7213 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7214 // get SCO connection 7215 reverse_bd_addr(&packet[3], addr); 7216 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7217 if (conn == NULL){ 7218 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7219 } 7220 7221 conn->state = ACCEPTED_CONNECTION_REQUEST; 7222 7223 // track outgoing connection to handle command status with error 7224 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7225 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7226 7227 // accept_synchronous_connection? Voice setting at offset 18 7228 // TODO: compare to current setting if sco connection already active 7229 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7230 break; 7231 #endif 7232 #endif 7233 7234 #ifdef ENABLE_BLE 7235 #ifdef ENABLE_LE_CENTRAL 7236 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7237 // white list used? 7238 initiator_filter_policy = packet[7]; 7239 switch (initiator_filter_policy) { 7240 case 0: 7241 // whitelist not used 7242 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7243 break; 7244 case 1: 7245 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7246 break; 7247 default: 7248 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7249 break; 7250 } 7251 // track outgoing connection 7252 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7253 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7254 break; 7255 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7256 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7257 // white list used? 7258 initiator_filter_policy = packet[3]; 7259 switch (initiator_filter_policy) { 7260 case 0: 7261 // whitelist not used 7262 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7263 break; 7264 case 1: 7265 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7266 break; 7267 default: 7268 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7269 break; 7270 } 7271 // track outgoing connection 7272 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7273 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7274 break; 7275 #endif 7276 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7277 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7278 break; 7279 #endif 7280 #endif /* ENABLE_BLE */ 7281 default: 7282 break; 7283 } 7284 7285 hci_stack->num_cmd_packets--; 7286 7287 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7288 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7289 if (err != 0){ 7290 return ERROR_CODE_HARDWARE_FAILURE; 7291 } 7292 return ERROR_CODE_SUCCESS; 7293 } 7294 7295 // disconnect because of security block 7296 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7297 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7298 if (!connection) return; 7299 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7300 } 7301 7302 7303 // Configure Secure Simple Pairing 7304 7305 #ifdef ENABLE_CLASSIC 7306 7307 // enable will enable SSP during init 7308 void gap_ssp_set_enable(int enable){ 7309 hci_stack->ssp_enable = enable; 7310 } 7311 7312 static int hci_local_ssp_activated(void){ 7313 return gap_ssp_supported() && hci_stack->ssp_enable; 7314 } 7315 7316 // if set, BTstack will respond to io capability request using authentication requirement 7317 void gap_ssp_set_io_capability(int io_capability){ 7318 hci_stack->ssp_io_capability = io_capability; 7319 } 7320 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7321 hci_stack->ssp_authentication_requirement = authentication_requirement; 7322 } 7323 7324 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7325 void gap_ssp_set_auto_accept(int auto_accept){ 7326 hci_stack->ssp_auto_accept = auto_accept; 7327 } 7328 7329 void gap_secure_connections_enable(bool enable){ 7330 hci_stack->secure_connections_enable = enable; 7331 } 7332 bool gap_secure_connections_active(void){ 7333 return hci_stack->secure_connections_active; 7334 } 7335 7336 #endif 7337 7338 // va_list part of hci_send_cmd 7339 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7340 if (!hci_can_send_command_packet_now()){ 7341 log_error("hci_send_cmd called but cannot send packet now"); 7342 return ERROR_CODE_COMMAND_DISALLOWED; 7343 } 7344 7345 // for HCI INITIALIZATION 7346 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7347 hci_stack->last_cmd_opcode = cmd->opcode; 7348 7349 hci_reserve_packet_buffer(); 7350 uint8_t * packet = hci_stack->hci_packet_buffer; 7351 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7352 uint8_t status = hci_send_cmd_packet(packet, size); 7353 7354 // release packet buffer on error or for synchronous transport implementations 7355 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7356 hci_release_packet_buffer(); 7357 hci_emit_transport_packet_sent(); 7358 } 7359 7360 return status; 7361 } 7362 7363 /** 7364 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7365 */ 7366 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7367 va_list argptr; 7368 va_start(argptr, cmd); 7369 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7370 va_end(argptr); 7371 return status; 7372 } 7373 7374 // Create various non-HCI events. 7375 // TODO: generalize, use table similar to hci_create_command 7376 7377 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7378 // dump packet 7379 if (dump) { 7380 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7381 } 7382 7383 // dispatch to all event handlers 7384 btstack_linked_list_iterator_t it; 7385 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7386 while (btstack_linked_list_iterator_has_next(&it)){ 7387 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7388 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7389 } 7390 } 7391 7392 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7393 if (!hci_stack->acl_packet_handler) return; 7394 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7395 } 7396 7397 #ifdef ENABLE_CLASSIC 7398 static void hci_notify_if_sco_can_send_now(void){ 7399 // notify SCO sender if waiting 7400 if (!hci_stack->sco_waiting_for_can_send_now) return; 7401 if (hci_can_send_sco_packet_now()){ 7402 hci_stack->sco_waiting_for_can_send_now = 0; 7403 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7404 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7405 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7406 } 7407 } 7408 7409 // parsing end emitting has been merged to reduce code size 7410 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7411 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7412 7413 uint8_t * eir_data; 7414 ad_context_t context; 7415 const uint8_t * name; 7416 uint8_t name_len; 7417 7418 if (size < 3) return; 7419 7420 int event_type = hci_event_packet_get_type(packet); 7421 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7422 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7423 7424 switch (event_type){ 7425 case HCI_EVENT_INQUIRY_RESULT: 7426 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7427 if (size != (3 + (num_responses * 14))) return; 7428 break; 7429 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7430 if (size != 257) return; 7431 if (num_responses != 1) return; 7432 break; 7433 default: 7434 return; 7435 } 7436 7437 // event[1] is set at the end 7438 int i; 7439 for (i=0; i<num_responses;i++){ 7440 memset(event, 0, sizeof(event)); 7441 event[0] = GAP_EVENT_INQUIRY_RESULT; 7442 uint8_t event_size = 27; // if name is not set by EIR 7443 7444 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7445 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7446 (void)memcpy(&event[9], 7447 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7448 3); // class of device 7449 (void)memcpy(&event[12], 7450 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7451 2); // clock offset 7452 7453 switch (event_type){ 7454 case HCI_EVENT_INQUIRY_RESULT: 7455 // 14,15,16,17 = 0, size 18 7456 break; 7457 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7458 event[14] = 1; 7459 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7460 // 16,17 = 0, size 18 7461 break; 7462 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7463 event[14] = 1; 7464 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7465 // EIR packets only contain a single inquiry response 7466 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7467 name = NULL; 7468 // Iterate over EIR data 7469 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7470 uint8_t data_type = ad_iterator_get_data_type(&context); 7471 uint8_t data_size = ad_iterator_get_data_len(&context); 7472 const uint8_t * data = ad_iterator_get_data(&context); 7473 // Prefer Complete Local Name over Shortened Local Name 7474 switch (data_type){ 7475 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7476 if (name) continue; 7477 /* fall through */ 7478 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7479 name = data; 7480 name_len = data_size; 7481 break; 7482 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7483 if (data_size != 8) break; 7484 event[16] = 1; 7485 memcpy(&event[17], data, 8); 7486 break; 7487 default: 7488 break; 7489 } 7490 } 7491 if (name){ 7492 event[25] = 1; 7493 // truncate name if needed 7494 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7495 event[26] = len; 7496 (void)memcpy(&event[27], name, len); 7497 event_size += len; 7498 } 7499 break; 7500 default: 7501 return; 7502 } 7503 event[1] = event_size - 2; 7504 hci_emit_event(event, event_size, 1); 7505 } 7506 } 7507 #endif 7508 7509 void hci_emit_state(void){ 7510 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7511 uint8_t event[3]; 7512 event[0] = BTSTACK_EVENT_STATE; 7513 event[1] = sizeof(event) - 2u; 7514 event[2] = hci_stack->state; 7515 hci_emit_event(event, sizeof(event), 1); 7516 } 7517 7518 #ifdef ENABLE_CLASSIC 7519 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7520 uint8_t event[13]; 7521 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7522 event[1] = sizeof(event) - 2; 7523 event[2] = status; 7524 little_endian_store_16(event, 3, con_handle); 7525 reverse_bd_addr(address, &event[5]); 7526 event[11] = 1; // ACL connection 7527 event[12] = 0; // encryption disabled 7528 hci_emit_event(event, sizeof(event), 1); 7529 } 7530 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7531 if (disable_l2cap_timeouts) return; 7532 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7533 uint8_t event[4]; 7534 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7535 event[1] = sizeof(event) - 2; 7536 little_endian_store_16(event, 2, conn->con_handle); 7537 hci_emit_event(event, sizeof(event), 1); 7538 } 7539 #endif 7540 7541 #ifdef ENABLE_BLE 7542 #ifdef ENABLE_LE_CENTRAL 7543 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){ 7544 uint8_t event[21]; 7545 event[0] = HCI_EVENT_LE_META; 7546 event[1] = sizeof(event) - 2u; 7547 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7548 event[3] = status; 7549 little_endian_store_16(event, 4, con_handle); 7550 event[6] = 0; // TODO: role 7551 event[7] = address_type; 7552 reverse_bd_addr(address, &event[8]); 7553 little_endian_store_16(event, 14, 0); // interval 7554 little_endian_store_16(event, 16, 0); // latency 7555 little_endian_store_16(event, 18, 0); // supervision timeout 7556 event[20] = 0; // master clock accuracy 7557 hci_emit_event(event, sizeof(event), 1); 7558 } 7559 #endif 7560 #endif 7561 7562 static void hci_emit_transport_packet_sent(void){ 7563 // notify upper stack that it might be possible to send again 7564 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7565 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7566 } 7567 7568 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7569 uint8_t event[6]; 7570 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7571 event[1] = sizeof(event) - 2u; 7572 event[2] = 0; // status = OK 7573 little_endian_store_16(event, 3, con_handle); 7574 event[5] = reason; 7575 hci_emit_event(event, sizeof(event), 1); 7576 } 7577 7578 static void hci_emit_nr_connections_changed(void){ 7579 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7580 uint8_t event[3]; 7581 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7582 event[1] = sizeof(event) - 2u; 7583 event[2] = nr_hci_connections(); 7584 hci_emit_event(event, sizeof(event), 1); 7585 } 7586 7587 static void hci_emit_hci_open_failed(void){ 7588 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7589 uint8_t event[2]; 7590 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7591 event[1] = sizeof(event) - 2u; 7592 hci_emit_event(event, sizeof(event), 1); 7593 } 7594 7595 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7596 log_info("hci_emit_dedicated_bonding_result %u ", status); 7597 uint8_t event[9]; 7598 int pos = 0; 7599 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7600 event[pos++] = sizeof(event) - 2u; 7601 event[pos++] = status; 7602 reverse_bd_addr(address, &event[pos]); 7603 hci_emit_event(event, sizeof(event), 1); 7604 } 7605 7606 7607 #ifdef ENABLE_CLASSIC 7608 7609 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7610 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7611 uint8_t event[5]; 7612 int pos = 0; 7613 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7614 event[pos++] = sizeof(event) - 2; 7615 little_endian_store_16(event, 2, con_handle); 7616 pos += 2; 7617 event[pos++] = level; 7618 hci_emit_event(event, sizeof(event), 1); 7619 } 7620 7621 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7622 if (!connection) return LEVEL_0; 7623 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7624 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7625 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7626 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7627 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7628 // LEVEL 4 always requires 128 bit encrytion key size 7629 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7630 security_level = LEVEL_3; 7631 } 7632 return security_level; 7633 } 7634 7635 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7636 uint8_t event[4]; 7637 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7638 event[1] = sizeof(event) - 2; 7639 event[2] = discoverable; 7640 event[3] = connectable; 7641 hci_emit_event(event, sizeof(event), 1); 7642 } 7643 7644 // query if remote side supports eSCO 7645 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7646 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7647 if (!connection) return false; 7648 return (connection->remote_supported_features[0] & 1) != 0; 7649 } 7650 7651 static bool hci_ssp_supported(hci_connection_t * connection){ 7652 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7653 return (connection->bonding_flags & mask) == mask; 7654 } 7655 7656 // query if remote side supports SSP 7657 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7658 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7659 if (!connection) return false; 7660 return hci_ssp_supported(connection) ? 1 : 0; 7661 } 7662 7663 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7664 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7665 } 7666 7667 /** 7668 * Check if remote supported features query has completed 7669 */ 7670 bool hci_remote_features_available(hci_con_handle_t handle){ 7671 hci_connection_t * connection = hci_connection_for_handle(handle); 7672 if (!connection) return false; 7673 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7674 } 7675 7676 /** 7677 * Trigger remote supported features query 7678 */ 7679 7680 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7681 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7682 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7683 } 7684 } 7685 7686 void hci_remote_features_query(hci_con_handle_t con_handle){ 7687 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7688 if (!connection) return; 7689 hci_trigger_remote_features_for_connection(connection); 7690 hci_run(); 7691 } 7692 7693 // GAP API 7694 /** 7695 * @bbrief enable/disable bonding. default is enabled 7696 * @praram enabled 7697 */ 7698 void gap_set_bondable_mode(int enable){ 7699 hci_stack->bondable = enable ? 1 : 0; 7700 } 7701 /** 7702 * @brief Get bondable mode. 7703 * @return 1 if bondable 7704 */ 7705 int gap_get_bondable_mode(void){ 7706 return hci_stack->bondable; 7707 } 7708 7709 /** 7710 * @brief map link keys to security levels 7711 */ 7712 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7713 switch (link_key_type){ 7714 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7715 return LEVEL_4; 7716 case COMBINATION_KEY: 7717 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7718 return LEVEL_3; 7719 default: 7720 return LEVEL_2; 7721 } 7722 } 7723 7724 /** 7725 * @brief map link keys to secure connection yes/no 7726 */ 7727 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7728 switch (link_key_type){ 7729 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7730 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7731 return true; 7732 default: 7733 return false; 7734 } 7735 } 7736 7737 /** 7738 * @brief map link keys to authenticated 7739 */ 7740 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7741 switch (link_key_type){ 7742 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7743 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7744 return true; 7745 default: 7746 return false; 7747 } 7748 } 7749 7750 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7751 log_info("gap_mitm_protection_required_for_security_level %u", level); 7752 return level > LEVEL_2; 7753 } 7754 7755 /** 7756 * @brief get current security level 7757 */ 7758 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7759 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7760 if (!connection) return LEVEL_0; 7761 return gap_security_level_for_connection(connection); 7762 } 7763 7764 /** 7765 * @brief request connection to device to 7766 * @result GAP_AUTHENTICATION_RESULT 7767 */ 7768 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7769 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7770 if (!connection){ 7771 hci_emit_security_level(con_handle, LEVEL_0); 7772 return; 7773 } 7774 7775 btstack_assert(hci_is_le_connection(connection) == false); 7776 7777 // 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) 7778 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7779 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7780 requested_level = LEVEL_4; 7781 } 7782 7783 gap_security_level_t current_level = gap_security_level(con_handle); 7784 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7785 requested_level, connection->requested_security_level, current_level); 7786 7787 // authentication active if authentication request was sent or planned level > 0 7788 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7789 if (authentication_active){ 7790 // authentication already active 7791 if (connection->requested_security_level < requested_level){ 7792 // increase requested level as new level is higher 7793 // TODO: handle re-authentication when done 7794 connection->requested_security_level = requested_level; 7795 } 7796 } else { 7797 // no request active, notify if security sufficient 7798 if (requested_level <= current_level){ 7799 hci_emit_security_level(con_handle, current_level); 7800 return; 7801 } 7802 7803 // store request 7804 connection->requested_security_level = requested_level; 7805 7806 // start to authenticate connection 7807 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7808 7809 // request remote features if not already active, also trigger hci_run 7810 hci_remote_features_query(con_handle); 7811 } 7812 } 7813 7814 /** 7815 * @brief start dedicated bonding with device. disconnect after bonding 7816 * @param device 7817 * @param request MITM protection 7818 * @result GAP_DEDICATED_BONDING_COMPLETE 7819 */ 7820 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7821 7822 // create connection state machine 7823 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7824 7825 if (!connection){ 7826 return BTSTACK_MEMORY_ALLOC_FAILED; 7827 } 7828 7829 // delete linkn key 7830 gap_drop_link_key_for_bd_addr(device); 7831 7832 // configure LEVEL_2/3, dedicated bonding 7833 connection->state = SEND_CREATE_CONNECTION; 7834 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7835 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7836 connection->bonding_flags = BONDING_DEDICATED; 7837 7838 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7839 7840 // handle: connnection failure (connection complete != ok) 7841 // handle: authentication failure 7842 // handle: disconnect on done 7843 7844 hci_run(); 7845 7846 return 0; 7847 } 7848 7849 void gap_set_local_name(const char * local_name){ 7850 hci_stack->local_name = local_name; 7851 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7852 // also update EIR if not set by user 7853 if (hci_stack->eir_data == NULL){ 7854 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7855 } 7856 hci_run(); 7857 } 7858 #endif 7859 7860 7861 #ifdef ENABLE_BLE 7862 7863 #ifdef ENABLE_LE_CENTRAL 7864 void gap_start_scan(void){ 7865 hci_stack->le_scanning_enabled = true; 7866 hci_run(); 7867 } 7868 7869 void gap_stop_scan(void){ 7870 hci_stack->le_scanning_enabled = false; 7871 hci_run(); 7872 } 7873 7874 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7875 hci_stack->le_scan_type = scan_type; 7876 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7877 hci_stack->le_scan_interval = scan_interval; 7878 hci_stack->le_scan_window = scan_window; 7879 hci_stack->le_scanning_param_update = true; 7880 hci_run(); 7881 } 7882 7883 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7884 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7885 } 7886 7887 void gap_set_scan_duplicate_filter(bool enabled){ 7888 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 7889 } 7890 7891 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7892 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7893 if (!conn){ 7894 // disallow if le connection is already outgoing 7895 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7896 log_error("le connection already active"); 7897 return ERROR_CODE_COMMAND_DISALLOWED; 7898 } 7899 7900 log_info("gap_connect: no connection exists yet, creating context"); 7901 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7902 if (!conn){ 7903 // notify client that alloc failed 7904 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7905 log_info("gap_connect: failed to alloc hci_connection_t"); 7906 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7907 } 7908 7909 // set le connecting state 7910 if (hci_is_le_connection_type(addr_type)){ 7911 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7912 } 7913 7914 conn->state = SEND_CREATE_CONNECTION; 7915 log_info("gap_connect: send create connection next"); 7916 hci_run(); 7917 return ERROR_CODE_SUCCESS; 7918 } 7919 7920 if (!hci_is_le_connection(conn) || 7921 (conn->state == SEND_CREATE_CONNECTION) || 7922 (conn->state == SENT_CREATE_CONNECTION)) { 7923 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7924 log_error("gap_connect: classic connection or connect is already being created"); 7925 return GATT_CLIENT_IN_WRONG_STATE; 7926 } 7927 7928 // check if connection was just disconnected 7929 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7930 log_info("gap_connect: send create connection (again)"); 7931 conn->state = SEND_CREATE_CONNECTION; 7932 hci_run(); 7933 return ERROR_CODE_SUCCESS; 7934 } 7935 7936 log_info("gap_connect: context exists with state %u", conn->state); 7937 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7938 hci_run(); 7939 return ERROR_CODE_SUCCESS; 7940 } 7941 7942 // @assumption: only a single outgoing LE Connection exists 7943 static hci_connection_t * gap_get_outgoing_connection(void){ 7944 btstack_linked_item_t *it; 7945 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7946 hci_connection_t * conn = (hci_connection_t *) it; 7947 if (!hci_is_le_connection(conn)) continue; 7948 switch (conn->state){ 7949 case SEND_CREATE_CONNECTION: 7950 case SENT_CREATE_CONNECTION: 7951 return conn; 7952 default: 7953 break; 7954 }; 7955 } 7956 return NULL; 7957 } 7958 7959 uint8_t gap_connect_cancel(void){ 7960 hci_connection_t * conn; 7961 switch (hci_stack->le_connecting_request){ 7962 case LE_CONNECTING_IDLE: 7963 break; 7964 case LE_CONNECTING_WHITELIST: 7965 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7966 hci_run(); 7967 break; 7968 case LE_CONNECTING_DIRECT: 7969 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7970 conn = gap_get_outgoing_connection(); 7971 if (conn == NULL){ 7972 hci_run(); 7973 } else { 7974 switch (conn->state){ 7975 case SEND_CREATE_CONNECTION: 7976 // skip sending create connection and emit event instead 7977 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7978 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7979 btstack_memory_hci_connection_free( conn ); 7980 break; 7981 case SENT_CREATE_CONNECTION: 7982 // let hci_run_general_gap_le cancel outgoing connection 7983 hci_run(); 7984 break; 7985 default: 7986 break; 7987 } 7988 } 7989 break; 7990 default: 7991 btstack_unreachable(); 7992 break; 7993 } 7994 return ERROR_CODE_SUCCESS; 7995 } 7996 7997 /** 7998 * @brief Set connection parameters for outgoing connections 7999 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8000 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8001 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8002 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8003 * @param conn_latency, default: 4 8004 * @param supervision_timeout (unit: 10ms), default: 720 ms 8005 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8006 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8007 */ 8008 8009 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8010 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8011 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8012 hci_stack->le_connection_scan_interval = conn_scan_interval; 8013 hci_stack->le_connection_scan_window = conn_scan_window; 8014 hci_stack->le_connection_interval_min = conn_interval_min; 8015 hci_stack->le_connection_interval_max = conn_interval_max; 8016 hci_stack->le_connection_latency = conn_latency; 8017 hci_stack->le_supervision_timeout = supervision_timeout; 8018 hci_stack->le_minimum_ce_length = min_ce_length; 8019 hci_stack->le_maximum_ce_length = max_ce_length; 8020 } 8021 #endif 8022 8023 /** 8024 * @brief Updates the connection parameters for a given LE connection 8025 * @param handle 8026 * @param conn_interval_min (unit: 1.25ms) 8027 * @param conn_interval_max (unit: 1.25ms) 8028 * @param conn_latency 8029 * @param supervision_timeout (unit: 10ms) 8030 * @return 0 if ok 8031 */ 8032 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8033 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8034 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8035 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8036 connection->le_conn_interval_min = conn_interval_min; 8037 connection->le_conn_interval_max = conn_interval_max; 8038 connection->le_conn_latency = conn_latency; 8039 connection->le_supervision_timeout = supervision_timeout; 8040 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8041 hci_run(); 8042 return 0; 8043 } 8044 8045 /** 8046 * @brief Request an update of the connection parameter for a given LE connection 8047 * @param handle 8048 * @param conn_interval_min (unit: 1.25ms) 8049 * @param conn_interval_max (unit: 1.25ms) 8050 * @param conn_latency 8051 * @param supervision_timeout (unit: 10ms) 8052 * @return 0 if ok 8053 */ 8054 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8055 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8056 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8057 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8058 connection->le_conn_interval_min = conn_interval_min; 8059 connection->le_conn_interval_max = conn_interval_max; 8060 connection->le_conn_latency = conn_latency; 8061 connection->le_supervision_timeout = supervision_timeout; 8062 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8063 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8064 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8065 return 0; 8066 } 8067 8068 #ifdef ENABLE_LE_PERIPHERAL 8069 8070 /** 8071 * @brief Set Advertisement Data 8072 * @param advertising_data_length 8073 * @param advertising_data (max 31 octets) 8074 * @note data is not copied, pointer has to stay valid 8075 */ 8076 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8077 hci_stack->le_advertisements_data_len = advertising_data_length; 8078 hci_stack->le_advertisements_data = advertising_data; 8079 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8080 hci_run(); 8081 } 8082 8083 /** 8084 * @brief Set Scan Response Data 8085 * @param advertising_data_length 8086 * @param advertising_data (max 31 octets) 8087 * @note data is not copied, pointer has to stay valid 8088 */ 8089 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8090 hci_stack->le_scan_response_data_len = scan_response_data_length; 8091 hci_stack->le_scan_response_data = scan_response_data; 8092 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8093 hci_run(); 8094 } 8095 8096 /** 8097 * @brief Set Advertisement Parameters 8098 * @param adv_int_min 8099 * @param adv_int_max 8100 * @param adv_type 8101 * @param direct_address_type 8102 * @param direct_address 8103 * @param channel_map 8104 * @param filter_policy 8105 * 8106 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8107 */ 8108 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8109 uint8_t direct_address_typ, bd_addr_t direct_address, 8110 uint8_t channel_map, uint8_t filter_policy) { 8111 8112 hci_stack->le_advertisements_interval_min = adv_int_min; 8113 hci_stack->le_advertisements_interval_max = adv_int_max; 8114 hci_stack->le_advertisements_type = adv_type; 8115 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8116 hci_stack->le_advertisements_channel_map = channel_map; 8117 hci_stack->le_advertisements_filter_policy = filter_policy; 8118 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8119 6); 8120 8121 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8122 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8123 hci_run(); 8124 } 8125 8126 /** 8127 * @brief Enable/Disable Advertisements 8128 * @param enabled 8129 */ 8130 void gap_advertisements_enable(int enabled){ 8131 if (enabled == 0){ 8132 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8133 } else { 8134 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8135 } 8136 hci_update_advertisements_enabled_for_current_roles(); 8137 hci_run(); 8138 } 8139 8140 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8141 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8142 btstack_linked_list_iterator_t it; 8143 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8144 while (btstack_linked_list_iterator_has_next(&it)){ 8145 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8146 if ( item->advertising_handle == advertising_handle ) { 8147 return item; 8148 } 8149 } 8150 return NULL; 8151 } 8152 8153 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8154 // find free advertisement handle 8155 uint8_t advertisement_handle; 8156 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8157 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8158 } 8159 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8160 // clear 8161 memset(storage, 0, sizeof(le_advertising_set_t)); 8162 // copy params 8163 storage->advertising_handle = advertisement_handle; 8164 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8165 // add to list 8166 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8167 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8168 *out_advertising_handle = advertisement_handle; 8169 // set tasks and start 8170 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8171 hci_run(); 8172 return ERROR_CODE_SUCCESS; 8173 } 8174 8175 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8176 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8177 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8178 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8179 // set tasks and start 8180 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8181 hci_run(); 8182 return ERROR_CODE_SUCCESS; 8183 } 8184 8185 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8186 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8187 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8188 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8189 return ERROR_CODE_SUCCESS; 8190 } 8191 8192 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8193 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8194 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8195 memcpy(advertising_set->random_address, random_address, 6); 8196 // set tasks and start 8197 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8198 hci_run(); 8199 return ERROR_CODE_SUCCESS; 8200 } 8201 8202 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8203 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8204 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8205 advertising_set->adv_data = advertising_data; 8206 advertising_set->adv_data_len = advertising_data_length; 8207 // set tasks and start 8208 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8209 hci_run(); 8210 return ERROR_CODE_SUCCESS; 8211 } 8212 8213 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){ 8214 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8215 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8216 advertising_set->scan_data = scan_response_data; 8217 advertising_set->scan_data_len = scan_response_data_length; 8218 // set tasks and start 8219 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8220 hci_run(); 8221 return ERROR_CODE_SUCCESS; 8222 } 8223 8224 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8225 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8226 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8227 advertising_set->enable_timeout = timeout; 8228 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8229 // set tasks and start 8230 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8231 hci_run(); 8232 return ERROR_CODE_SUCCESS; 8233 } 8234 8235 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8236 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8237 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8238 // set tasks and start 8239 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8240 hci_run(); 8241 return ERROR_CODE_SUCCESS; 8242 } 8243 8244 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8245 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8246 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8247 // set tasks and start 8248 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8249 hci_run(); 8250 return ERROR_CODE_SUCCESS; 8251 } 8252 8253 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8254 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8255 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8256 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8257 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8258 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8259 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8260 // set tasks and start 8261 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8262 hci_run(); 8263 return ERROR_CODE_SUCCESS; 8264 } 8265 8266 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8267 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8268 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8269 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8270 return ERROR_CODE_SUCCESS; 8271 } 8272 8273 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8274 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8275 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8276 advertising_set->periodic_data = periodic_data; 8277 advertising_set->periodic_data_len = periodic_data_length; 8278 // set tasks and start 8279 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8280 hci_run(); 8281 return ERROR_CODE_SUCCESS; 8282 } 8283 8284 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8285 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8286 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8287 // set tasks and start 8288 advertising_set->periodic_include_adi = include_adi; 8289 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8290 hci_run(); 8291 return ERROR_CODE_SUCCESS; 8292 } 8293 8294 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8295 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8296 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8297 // set tasks and start 8298 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8299 hci_run(); 8300 return ERROR_CODE_SUCCESS; 8301 } 8302 8303 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8304 hci_stack->le_past_mode = mode; 8305 hci_stack->le_past_skip = skip; 8306 hci_stack->le_past_sync_timeout = sync_timeout; 8307 hci_stack->le_past_cte_type = cte_type; 8308 hci_stack->le_past_set_default_params = true; 8309 hci_run(); 8310 return ERROR_CODE_SUCCESS; 8311 } 8312 8313 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8314 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8315 if (hci_connection == NULL){ 8316 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8317 } 8318 hci_connection->le_past_sync_handle = sync_handle; 8319 hci_connection->le_past_service_data = service_data; 8320 hci_run(); 8321 return ERROR_CODE_SUCCESS; 8322 } 8323 8324 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8325 8326 #endif 8327 8328 #endif 8329 8330 void hci_le_set_own_address_type(uint8_t own_address_type){ 8331 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8332 if (own_address_type == hci_stack->le_own_addr_type) return; 8333 hci_stack->le_own_addr_type = own_address_type; 8334 8335 #ifdef ENABLE_LE_PERIPHERAL 8336 // update advertisement parameters, too 8337 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8338 hci_run(); 8339 #endif 8340 #ifdef ENABLE_LE_CENTRAL 8341 // note: we don't update scan parameters or modify ongoing connection attempts 8342 #endif 8343 } 8344 8345 void hci_le_random_address_set(const bd_addr_t random_address){ 8346 memcpy(hci_stack->le_random_address, random_address, 6); 8347 hci_stack->le_random_address_set = true; 8348 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8349 hci_run(); 8350 } 8351 8352 #endif 8353 8354 uint8_t gap_disconnect(hci_con_handle_t handle){ 8355 hci_connection_t * conn = hci_connection_for_handle(handle); 8356 if (!conn){ 8357 hci_emit_disconnection_complete(handle, 0); 8358 return 0; 8359 } 8360 // ignore if already disconnected 8361 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8362 return 0; 8363 } 8364 conn->state = SEND_DISCONNECT; 8365 hci_run(); 8366 return 0; 8367 } 8368 8369 int gap_read_rssi(hci_con_handle_t con_handle){ 8370 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8371 if (hci_connection == NULL) return 0; 8372 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8373 hci_run(); 8374 return 1; 8375 } 8376 8377 /** 8378 * @brief Get connection type 8379 * @param con_handle 8380 * @result connection_type 8381 */ 8382 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8383 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8384 if (!conn) return GAP_CONNECTION_INVALID; 8385 switch (conn->address_type){ 8386 case BD_ADDR_TYPE_LE_PUBLIC: 8387 case BD_ADDR_TYPE_LE_RANDOM: 8388 return GAP_CONNECTION_LE; 8389 case BD_ADDR_TYPE_SCO: 8390 return GAP_CONNECTION_SCO; 8391 case BD_ADDR_TYPE_ACL: 8392 return GAP_CONNECTION_ACL; 8393 default: 8394 return GAP_CONNECTION_INVALID; 8395 } 8396 } 8397 8398 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8399 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8400 if (!conn) return HCI_ROLE_INVALID; 8401 return (hci_role_t) conn->role; 8402 } 8403 8404 8405 #ifdef ENABLE_CLASSIC 8406 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8407 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8408 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8409 conn->request_role = role; 8410 hci_run(); 8411 return ERROR_CODE_SUCCESS; 8412 } 8413 #endif 8414 8415 #ifdef ENABLE_BLE 8416 8417 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){ 8418 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8419 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8420 8421 conn->le_phy_update_all_phys = all_phys; 8422 conn->le_phy_update_tx_phys = tx_phys; 8423 conn->le_phy_update_rx_phys = rx_phys; 8424 conn->le_phy_update_phy_options = phy_options; 8425 8426 hci_run(); 8427 8428 return 0; 8429 } 8430 8431 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8432 // check if already in list 8433 btstack_linked_list_iterator_t it; 8434 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8435 while (btstack_linked_list_iterator_has_next(&it)) { 8436 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8437 if (entry->address_type != address_type) { 8438 continue; 8439 } 8440 if (memcmp(entry->address, address, 6) != 0) { 8441 continue; 8442 } 8443 // disallow if already scheduled to add 8444 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8445 return ERROR_CODE_COMMAND_DISALLOWED; 8446 } 8447 // still on controller, but scheduled to remove -> re-add 8448 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8449 return ERROR_CODE_SUCCESS; 8450 } 8451 // alloc and add to list 8452 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8453 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8454 entry->address_type = address_type; 8455 (void)memcpy(entry->address, address, 6); 8456 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8457 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8458 return ERROR_CODE_SUCCESS; 8459 } 8460 8461 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8462 btstack_linked_list_iterator_t it; 8463 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8464 while (btstack_linked_list_iterator_has_next(&it)){ 8465 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8466 if (entry->address_type != address_type) { 8467 continue; 8468 } 8469 if (memcmp(entry->address, address, 6) != 0) { 8470 continue; 8471 } 8472 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8473 // remove from controller if already present 8474 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8475 } else { 8476 // directly remove entry from whitelist 8477 btstack_linked_list_iterator_remove(&it); 8478 btstack_memory_whitelist_entry_free(entry); 8479 } 8480 return ERROR_CODE_SUCCESS; 8481 } 8482 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8483 } 8484 8485 static void hci_whitelist_clear(void){ 8486 btstack_linked_list_iterator_t it; 8487 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8488 while (btstack_linked_list_iterator_has_next(&it)){ 8489 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8490 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8491 // remove from controller if already present 8492 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8493 continue; 8494 } 8495 // directly remove entry from whitelist 8496 btstack_linked_list_iterator_remove(&it); 8497 btstack_memory_whitelist_entry_free(entry); 8498 } 8499 } 8500 8501 /** 8502 * @brief Clear Whitelist 8503 * @return 0 if ok 8504 */ 8505 uint8_t gap_whitelist_clear(void){ 8506 hci_whitelist_clear(); 8507 hci_run(); 8508 return ERROR_CODE_SUCCESS; 8509 } 8510 8511 /** 8512 * @brief Add Device to Whitelist 8513 * @param address_typ 8514 * @param address 8515 * @return 0 if ok 8516 */ 8517 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8518 uint8_t status = hci_whitelist_add(address_type, address); 8519 if (status){ 8520 return status; 8521 } 8522 hci_run(); 8523 return ERROR_CODE_SUCCESS; 8524 } 8525 8526 /** 8527 * @brief Remove Device from Whitelist 8528 * @param address_typ 8529 * @param address 8530 * @return 0 if ok 8531 */ 8532 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8533 uint8_t status = hci_whitelist_remove(address_type, address); 8534 if (status){ 8535 return status; 8536 } 8537 hci_run(); 8538 return ERROR_CODE_SUCCESS; 8539 } 8540 8541 #ifdef ENABLE_LE_CENTRAL 8542 /** 8543 * @brief Connect with Whitelist 8544 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8545 * @return - if ok 8546 */ 8547 uint8_t gap_connect_with_whitelist(void){ 8548 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8549 return ERROR_CODE_COMMAND_DISALLOWED; 8550 } 8551 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8552 hci_run(); 8553 return ERROR_CODE_SUCCESS; 8554 } 8555 8556 /** 8557 * @brief Auto Connection Establishment - Start Connecting to device 8558 * @param address_typ 8559 * @param address 8560 * @return 0 if ok 8561 */ 8562 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8563 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8564 return ERROR_CODE_COMMAND_DISALLOWED; 8565 } 8566 8567 uint8_t status = hci_whitelist_add(address_type, address); 8568 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8569 return status; 8570 } 8571 8572 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8573 8574 hci_run(); 8575 return ERROR_CODE_SUCCESS; 8576 } 8577 8578 /** 8579 * @brief Auto Connection Establishment - Stop Connecting to device 8580 * @param address_typ 8581 * @param address 8582 * @return 0 if ok 8583 */ 8584 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8585 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8586 return ERROR_CODE_COMMAND_DISALLOWED; 8587 } 8588 8589 hci_whitelist_remove(address_type, address); 8590 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8591 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8592 } 8593 hci_run(); 8594 return 0; 8595 } 8596 8597 /** 8598 * @brief Auto Connection Establishment - Stop everything 8599 * @note Convenience function to stop all active auto connection attempts 8600 */ 8601 uint8_t gap_auto_connection_stop_all(void){ 8602 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8603 return ERROR_CODE_COMMAND_DISALLOWED; 8604 } 8605 hci_whitelist_clear(); 8606 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8607 hci_run(); 8608 return ERROR_CODE_SUCCESS; 8609 } 8610 8611 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8612 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8613 if (!conn) return 0; 8614 return conn->le_connection_interval; 8615 } 8616 #endif 8617 #endif 8618 8619 #ifdef ENABLE_CLASSIC 8620 /** 8621 * @brief Set Extended Inquiry Response data 8622 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8623 * @note has to be done before stack starts up 8624 */ 8625 void gap_set_extended_inquiry_response(const uint8_t * data){ 8626 hci_stack->eir_data = data; 8627 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8628 hci_run(); 8629 } 8630 8631 /** 8632 * @brief Start GAP Classic Inquiry 8633 * @param duration in 1.28s units 8634 * @return 0 if ok 8635 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8636 */ 8637 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8638 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8639 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8640 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8641 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8642 } 8643 hci_stack->inquiry_state = duration_in_1280ms_units; 8644 hci_stack->inquiry_max_period_length = 0; 8645 hci_stack->inquiry_min_period_length = 0; 8646 hci_run(); 8647 return 0; 8648 } 8649 8650 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8651 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8652 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8653 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8654 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8655 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8656 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8657 8658 hci_stack->inquiry_state = duration; 8659 hci_stack->inquiry_max_period_length = max_period_length; 8660 hci_stack->inquiry_min_period_length = min_period_length; 8661 hci_run(); 8662 return 0; 8663 } 8664 8665 /** 8666 * @brief Stop GAP Classic Inquiry 8667 * @return 0 if ok 8668 */ 8669 int gap_inquiry_stop(void){ 8670 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8671 // emit inquiry complete event, before it even started 8672 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8673 hci_emit_event(event, sizeof(event), 1); 8674 return 0; 8675 } 8676 switch (hci_stack->inquiry_state){ 8677 case GAP_INQUIRY_STATE_ACTIVE: 8678 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8679 hci_run(); 8680 return ERROR_CODE_SUCCESS; 8681 case GAP_INQUIRY_STATE_PERIODIC: 8682 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8683 hci_run(); 8684 return ERROR_CODE_SUCCESS; 8685 default: 8686 return ERROR_CODE_COMMAND_DISALLOWED; 8687 } 8688 } 8689 8690 void gap_inquiry_set_lap(uint32_t lap){ 8691 hci_stack->inquiry_lap = lap; 8692 } 8693 8694 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8695 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8696 hci_stack->inquiry_scan_window = inquiry_scan_window; 8697 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8698 hci_run(); 8699 } 8700 8701 8702 /** 8703 * @brief Remote Name Request 8704 * @param addr 8705 * @param page_scan_repetition_mode 8706 * @param clock_offset only used when bit 15 is set 8707 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8708 */ 8709 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8710 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8711 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8712 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8713 hci_stack->remote_name_clock_offset = clock_offset; 8714 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8715 hci_run(); 8716 return 0; 8717 } 8718 8719 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8720 hci_stack->gap_pairing_state = state; 8721 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8722 hci_run(); 8723 return 0; 8724 } 8725 8726 /** 8727 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8728 * @param addr 8729 * @param pin_data 8730 * @param pin_len 8731 * @return 0 if ok 8732 */ 8733 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8734 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8735 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8736 hci_stack->gap_pairing_pin_len = pin_len; 8737 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8738 } 8739 8740 /** 8741 * @brief Legacy Pairing Pin Code Response 8742 * @param addr 8743 * @param pin 8744 * @return 0 if ok 8745 */ 8746 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8747 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8748 } 8749 8750 /** 8751 * @brief Abort Legacy Pairing 8752 * @param addr 8753 * @param pin 8754 * @return 0 if ok 8755 */ 8756 int gap_pin_code_negative(bd_addr_t addr){ 8757 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8758 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8759 } 8760 8761 /** 8762 * @brief SSP Passkey Response 8763 * @param addr 8764 * @param passkey 8765 * @return 0 if ok 8766 */ 8767 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8768 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8769 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8770 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8771 } 8772 8773 /** 8774 * @brief Abort SSP Passkey Entry/Pairing 8775 * @param addr 8776 * @param pin 8777 * @return 0 if ok 8778 */ 8779 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8780 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8781 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8782 } 8783 8784 /** 8785 * @brief Accept SSP Numeric Comparison 8786 * @param addr 8787 * @param passkey 8788 * @return 0 if ok 8789 */ 8790 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8791 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8792 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8793 } 8794 8795 /** 8796 * @brief Abort SSP Numeric Comparison/Pairing 8797 * @param addr 8798 * @param pin 8799 * @return 0 if ok 8800 */ 8801 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8802 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8803 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8804 } 8805 8806 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8807 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8808 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8809 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8810 connectionSetAuthenticationFlags(conn, flag); 8811 hci_run(); 8812 return ERROR_CODE_SUCCESS; 8813 } 8814 #endif 8815 8816 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8817 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8818 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8819 } 8820 8821 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8822 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8823 } 8824 #endif 8825 8826 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8827 /** 8828 * @brief Report Remote OOB Data 8829 * @param bd_addr 8830 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8831 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8832 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8833 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8834 */ 8835 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){ 8836 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8837 if (connection == NULL) { 8838 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8839 } 8840 connection->classic_oob_c_192 = c_192; 8841 connection->classic_oob_r_192 = r_192; 8842 8843 // ignore P-256 if not supported by us 8844 if (hci_stack->secure_connections_active){ 8845 connection->classic_oob_c_256 = c_256; 8846 connection->classic_oob_r_256 = r_256; 8847 } 8848 8849 return ERROR_CODE_SUCCESS; 8850 } 8851 /** 8852 * @brief Generate new OOB data 8853 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8854 */ 8855 void gap_ssp_generate_oob_data(void){ 8856 hci_stack->classic_read_local_oob_data = true; 8857 hci_run(); 8858 } 8859 8860 #endif 8861 8862 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8863 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8864 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8865 if (connection == NULL) { 8866 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8867 } 8868 8869 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8870 connection->link_key_type = type; 8871 8872 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8873 } 8874 8875 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8876 /** 8877 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8878 * @param inquiry_mode see bluetooth_defines.h 8879 */ 8880 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8881 hci_stack->inquiry_mode = inquiry_mode; 8882 } 8883 8884 /** 8885 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8886 */ 8887 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8888 hci_stack->sco_voice_setting = voice_setting; 8889 } 8890 8891 /** 8892 * @brief Get SCO Voice Setting 8893 * @return current voice setting 8894 */ 8895 uint16_t hci_get_sco_voice_setting(void){ 8896 return hci_stack->sco_voice_setting; 8897 } 8898 8899 static int hci_have_usb_transport(void){ 8900 if (!hci_stack->hci_transport) return 0; 8901 const char * transport_name = hci_stack->hci_transport->name; 8902 if (!transport_name) return 0; 8903 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8904 } 8905 8906 /** @brief Get SCO packet length for current SCO Voice setting 8907 * @note Using SCO packets of the exact length is required for USB transfer 8908 * @return Length of SCO packets in bytes (not audio frames) 8909 */ 8910 uint16_t hci_get_sco_packet_length(void){ 8911 uint16_t sco_packet_length = 0; 8912 8913 #ifdef ENABLE_SCO_OVER_HCI 8914 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8915 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8916 8917 if (hci_have_usb_transport()){ 8918 // see Core Spec for H2 USB Transfer. 8919 // 3 byte SCO header + 24 bytes per connection 8920 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8921 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8922 } else { 8923 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8924 sco_packet_length = 3 + 60 * multiplier; 8925 // assert that it still fits inside an SCO buffer 8926 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8927 sco_packet_length = 3 + 60; 8928 } 8929 } 8930 #endif 8931 8932 #ifdef HAVE_SCO_TRANSPORT 8933 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8934 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8935 sco_packet_length = 3 + 60 * multiplier; 8936 #endif 8937 return sco_packet_length; 8938 } 8939 8940 /** 8941 * @brief Sets the master/slave policy 8942 * @param policy (0: attempt to become master, 1: let connecting device decide) 8943 */ 8944 void hci_set_master_slave_policy(uint8_t policy){ 8945 hci_stack->master_slave_policy = policy; 8946 } 8947 8948 #endif 8949 8950 HCI_STATE hci_get_state(void){ 8951 return hci_stack->state; 8952 } 8953 8954 #ifdef ENABLE_CLASSIC 8955 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8956 hci_stack->gap_classic_accept_callback = accept_callback; 8957 } 8958 #endif 8959 8960 /** 8961 * @brief Set callback for Bluetooth Hardware Error 8962 */ 8963 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8964 hci_stack->hardware_error_callback = fn; 8965 } 8966 8967 void hci_disconnect_all(void){ 8968 btstack_linked_list_iterator_t it; 8969 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8970 while (btstack_linked_list_iterator_has_next(&it)){ 8971 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8972 if (con->state == SENT_DISCONNECT) continue; 8973 con->state = SEND_DISCONNECT; 8974 } 8975 hci_run(); 8976 } 8977 8978 uint16_t hci_get_manufacturer(void){ 8979 return hci_stack->manufacturer; 8980 } 8981 8982 #ifdef ENABLE_BLE 8983 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8984 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8985 if (!hci_con) return NULL; 8986 return &hci_con->sm_connection; 8987 } 8988 8989 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8990 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8991 #endif 8992 8993 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8994 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8995 if (hci_connection == NULL) return 0; 8996 if (hci_is_le_connection(hci_connection)){ 8997 #ifdef ENABLE_BLE 8998 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8999 if (sm_conn->sm_connection_encrypted) { 9000 return sm_conn->sm_actual_encryption_key_size; 9001 } 9002 #endif 9003 } else { 9004 #ifdef ENABLE_CLASSIC 9005 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9006 return hci_connection->encryption_key_size; 9007 } 9008 #endif 9009 } 9010 return 0; 9011 } 9012 9013 bool gap_authenticated(hci_con_handle_t con_handle){ 9014 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9015 if (hci_connection == NULL) return false; 9016 9017 switch (hci_connection->address_type){ 9018 #ifdef ENABLE_BLE 9019 case BD_ADDR_TYPE_LE_PUBLIC: 9020 case BD_ADDR_TYPE_LE_RANDOM: 9021 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9022 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9023 #endif 9024 #ifdef ENABLE_CLASSIC 9025 case BD_ADDR_TYPE_SCO: 9026 case BD_ADDR_TYPE_ACL: 9027 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9028 #endif 9029 default: 9030 return false; 9031 } 9032 } 9033 9034 bool gap_secure_connection(hci_con_handle_t con_handle){ 9035 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9036 if (hci_connection == NULL) return 0; 9037 9038 switch (hci_connection->address_type){ 9039 #ifdef ENABLE_BLE 9040 case BD_ADDR_TYPE_LE_PUBLIC: 9041 case BD_ADDR_TYPE_LE_RANDOM: 9042 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9043 return hci_connection->sm_connection.sm_connection_sc != 0; 9044 #endif 9045 #ifdef ENABLE_CLASSIC 9046 case BD_ADDR_TYPE_SCO: 9047 case BD_ADDR_TYPE_ACL: 9048 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9049 #endif 9050 default: 9051 return false; 9052 } 9053 } 9054 9055 bool gap_bonded(hci_con_handle_t con_handle){ 9056 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9057 if (hci_connection == NULL) return 0; 9058 9059 #ifdef ENABLE_CLASSIC 9060 link_key_t link_key; 9061 link_key_type_t link_key_type; 9062 #endif 9063 switch (hci_connection->address_type){ 9064 #ifdef ENABLE_BLE 9065 case BD_ADDR_TYPE_LE_PUBLIC: 9066 case BD_ADDR_TYPE_LE_RANDOM: 9067 return hci_connection->sm_connection.sm_le_db_index >= 0; 9068 #endif 9069 #ifdef ENABLE_CLASSIC 9070 case BD_ADDR_TYPE_SCO: 9071 case BD_ADDR_TYPE_ACL: 9072 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9073 #endif 9074 default: 9075 return false; 9076 } 9077 } 9078 9079 #ifdef ENABLE_BLE 9080 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9081 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9082 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9083 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9084 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9085 return sm_conn->sm_connection_authorization_state; 9086 } 9087 #endif 9088 9089 #ifdef ENABLE_CLASSIC 9090 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){ 9091 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9092 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9093 conn->sniff_min_interval = sniff_min_interval; 9094 conn->sniff_max_interval = sniff_max_interval; 9095 conn->sniff_attempt = sniff_attempt; 9096 conn->sniff_timeout = sniff_timeout; 9097 hci_run(); 9098 return 0; 9099 } 9100 9101 /** 9102 * @brief Exit Sniff mode 9103 * @param con_handle 9104 @ @return 0 if ok 9105 */ 9106 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9107 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9108 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9109 conn->sniff_min_interval = 0xffff; 9110 hci_run(); 9111 return 0; 9112 } 9113 9114 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){ 9115 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9116 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9117 conn->sniff_subrating_max_latency = max_latency; 9118 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9119 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9120 hci_run(); 9121 return ERROR_CODE_SUCCESS; 9122 } 9123 9124 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){ 9125 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9126 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9127 conn->qos_service_type = service_type; 9128 conn->qos_token_rate = token_rate; 9129 conn->qos_peak_bandwidth = peak_bandwidth; 9130 conn->qos_latency = latency; 9131 conn->qos_delay_variation = delay_variation; 9132 hci_run(); 9133 return ERROR_CODE_SUCCESS; 9134 } 9135 9136 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9137 hci_stack->new_page_scan_interval = page_scan_interval; 9138 hci_stack->new_page_scan_window = page_scan_window; 9139 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9140 hci_run(); 9141 } 9142 9143 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9144 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9145 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9146 hci_run(); 9147 } 9148 9149 void gap_set_page_timeout(uint16_t page_timeout){ 9150 hci_stack->page_timeout = page_timeout; 9151 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9152 hci_run(); 9153 } 9154 9155 #endif 9156 9157 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9158 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9159 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9160 if (le_device_db_index >= le_device_db_max_count()) return; 9161 uint8_t offset = le_device_db_index >> 3; 9162 uint8_t mask = 1 << (le_device_db_index & 7); 9163 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9164 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9165 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9166 // note: go back to remove entries, otherwise, a remove + add will skip the add 9167 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9168 } 9169 } 9170 9171 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9172 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9173 if (le_device_db_index >= le_device_db_max_count()) return; 9174 uint8_t offset = le_device_db_index >> 3; 9175 uint8_t mask = 1 << (le_device_db_index & 7); 9176 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9177 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9178 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9179 } 9180 } 9181 9182 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9183 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9184 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9185 } 9186 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9187 // restart le resolving list update 9188 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9189 } 9190 return ERROR_CODE_SUCCESS; 9191 } 9192 9193 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9194 hci_stack->le_privacy_mode = privacy_mode; 9195 } 9196 #endif 9197 9198 #ifdef ENABLE_BLE 9199 #ifdef ENABLE_LE_CENTRAL 9200 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9201 9202 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9203 // check if already in list 9204 btstack_linked_list_iterator_t it; 9205 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9206 while (btstack_linked_list_iterator_has_next(&it)) { 9207 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9208 if (entry->sid != advertising_sid) { 9209 continue; 9210 } 9211 if (entry->address_type != address_type) { 9212 continue; 9213 } 9214 if (memcmp(entry->address, address, 6) != 0) { 9215 continue; 9216 } 9217 // disallow if already scheduled to add 9218 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9219 return ERROR_CODE_COMMAND_DISALLOWED; 9220 } 9221 // still on controller, but scheduled to remove -> re-add 9222 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9223 return ERROR_CODE_SUCCESS; 9224 } 9225 // alloc and add to list 9226 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9227 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9228 entry->sid = advertising_sid; 9229 entry->address_type = address_type; 9230 (void)memcpy(entry->address, address, 6); 9231 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9232 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9233 return ERROR_CODE_SUCCESS; 9234 } 9235 9236 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9237 btstack_linked_list_iterator_t it; 9238 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9239 while (btstack_linked_list_iterator_has_next(&it)){ 9240 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9241 if (entry->sid != advertising_sid) { 9242 continue; 9243 } 9244 if (entry->address_type != address_type) { 9245 continue; 9246 } 9247 if (memcmp(entry->address, address, 6) != 0) { 9248 continue; 9249 } 9250 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9251 // remove from controller if already present 9252 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9253 } else { 9254 // directly remove entry from whitelist 9255 btstack_linked_list_iterator_remove(&it); 9256 btstack_memory_periodic_advertiser_list_entry_free(entry); 9257 } 9258 return ERROR_CODE_SUCCESS; 9259 } 9260 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9261 } 9262 9263 static void hci_periodic_advertiser_list_clear(void){ 9264 btstack_linked_list_iterator_t it; 9265 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9266 while (btstack_linked_list_iterator_has_next(&it)){ 9267 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9268 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9269 // remove from controller if already present 9270 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9271 continue; 9272 } 9273 // directly remove entry from whitelist 9274 btstack_linked_list_iterator_remove(&it); 9275 btstack_memory_periodic_advertiser_list_entry_free(entry); 9276 } 9277 } 9278 9279 uint8_t gap_periodic_advertiser_list_clear(void){ 9280 hci_periodic_advertiser_list_clear(); 9281 hci_run(); 9282 return ERROR_CODE_SUCCESS; 9283 } 9284 9285 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9286 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9287 if (status){ 9288 return status; 9289 } 9290 hci_run(); 9291 return ERROR_CODE_SUCCESS; 9292 } 9293 9294 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9295 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9296 if (status){ 9297 return status; 9298 } 9299 hci_run(); 9300 return ERROR_CODE_SUCCESS; 9301 } 9302 9303 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9304 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9305 // abort if already active 9306 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9307 return ERROR_CODE_COMMAND_DISALLOWED; 9308 } 9309 // store request 9310 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9311 hci_stack->le_periodic_sync_options = options; 9312 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9313 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9314 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9315 hci_stack->le_periodic_sync_skip = skip; 9316 hci_stack->le_periodic_sync_timeout = sync_timeout; 9317 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9318 9319 hci_run(); 9320 return ERROR_CODE_SUCCESS; 9321 } 9322 9323 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9324 // abort if not requested 9325 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9326 return ERROR_CODE_COMMAND_DISALLOWED; 9327 } 9328 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9329 hci_run(); 9330 return ERROR_CODE_SUCCESS; 9331 } 9332 9333 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9334 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9335 return ERROR_CODE_COMMAND_DISALLOWED; 9336 } 9337 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9338 hci_run(); 9339 return ERROR_CODE_SUCCESS; 9340 } 9341 9342 #endif 9343 #endif 9344 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9345 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 9346 hci_iso_stream_state_t state) { 9347 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9348 if (iso_stream == NULL){ 9349 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9350 } else { 9351 iso_stream->iso_type = iso_type; 9352 iso_stream->state = state; 9353 iso_stream->con_handle = con_handle; 9354 iso_stream->group_id = group_id; 9355 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9356 return ERROR_CODE_SUCCESS; 9357 } 9358 } 9359 9360 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9361 btstack_linked_list_iterator_t it; 9362 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9363 while (btstack_linked_list_iterator_has_next(&it)){ 9364 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9365 if (iso_stream->con_handle == con_handle ) { 9366 return iso_stream; 9367 } 9368 } 9369 return NULL; 9370 } 9371 9372 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9373 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->con_handle, iso_stream->group_id); 9374 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9375 btstack_memory_hci_iso_stream_free(iso_stream); 9376 } 9377 9378 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9379 btstack_linked_list_iterator_t it; 9380 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9381 while (btstack_linked_list_iterator_has_next(&it)){ 9382 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9383 if ((iso_stream->group_id == group_id) && 9384 (iso_stream->iso_type == iso_type)){ 9385 btstack_linked_list_iterator_remove(&it); 9386 btstack_memory_hci_iso_stream_free(iso_stream); 9387 } 9388 } 9389 } 9390 9391 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9392 btstack_linked_list_iterator_t it; 9393 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9394 while (btstack_linked_list_iterator_has_next(&it)){ 9395 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9396 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9397 (iso_stream->group_id == group_id)){ 9398 btstack_linked_list_iterator_remove(&it); 9399 btstack_memory_hci_iso_stream_free(iso_stream); 9400 } 9401 } 9402 } 9403 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9404 btstack_linked_list_iterator_t it; 9405 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9406 while (btstack_linked_list_iterator_has_next(&it)){ 9407 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9408 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9409 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9410 } 9411 } 9412 } 9413 9414 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9415 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9416 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9417 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9418 return (sdu_len_offset + 2 + sdu_len) == size; 9419 } 9420 9421 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9422 if (hci_stack->iso_packet_handler == NULL) { 9423 return; 9424 } 9425 if (size < 4) { 9426 return; 9427 } 9428 9429 // parse header 9430 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9431 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9432 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9433 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9434 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9435 9436 // assert packet is complete 9437 if ((iso_data_len + 4u) != size){ 9438 return; 9439 } 9440 9441 if ((pb_flag & 0x01) == 0){ 9442 if (pb_flag == 0x02){ 9443 // The ISO_Data_Load field contains a header and a complete SDU. 9444 if (hci_iso_sdu_complete(packet, size)) { 9445 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9446 } 9447 } else { 9448 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9449 if (iso_stream == NULL){ 9450 return; 9451 } 9452 if (size > HCI_ISO_PAYLOAD_SIZE){ 9453 return; 9454 } 9455 memcpy(iso_stream->reassembly_buffer, packet, size); 9456 // fix pb_flag 9457 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9458 iso_stream->reassembly_pos = size; 9459 } 9460 } else { 9461 // iso_data_load contains continuation or last fragment of an SDU 9462 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9463 if (ts_flag != 0){ 9464 return; 9465 } 9466 // append fragment 9467 if (iso_stream == NULL){ 9468 return; 9469 } 9470 if (iso_stream->reassembly_pos == 0){ 9471 return; 9472 } 9473 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9474 // reset reassembly buffer 9475 iso_stream->reassembly_pos = 0; 9476 return; 9477 } 9478 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9479 iso_stream->reassembly_pos += iso_data_len; 9480 9481 // deliver if last fragment and SDU complete 9482 if (pb_flag == 0x03){ 9483 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9484 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9485 } 9486 iso_stream->reassembly_pos = 0; 9487 } 9488 } 9489 } 9490 9491 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9492 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9493 uint16_t pos = 0; 9494 event[pos++] = HCI_EVENT_META_GAP; 9495 event[pos++] = 4 + (2 * big->num_bis); 9496 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9497 event[pos++] = status; 9498 event[pos++] = big->big_handle; 9499 event[pos++] = big->num_bis; 9500 uint8_t i; 9501 for (i=0;i<big->num_bis;i++){ 9502 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9503 pos += 2; 9504 } 9505 hci_emit_event(event, pos, 0); 9506 } 9507 9508 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9509 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9510 uint16_t pos = 0; 9511 event[pos++] = HCI_EVENT_META_GAP; 9512 event[pos++] = 4 + (2 * cig->num_cis); 9513 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9514 event[pos++] = status; 9515 event[pos++] = cig->cig_id; 9516 event[pos++] = cig->num_cis; 9517 uint8_t i; 9518 for (i=0;i<cig->num_cis;i++){ 9519 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9520 pos += 2; 9521 } 9522 hci_emit_event(event, pos, 0); 9523 } 9524 9525 static void 9526 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status) { 9527 uint8_t event [7]; 9528 uint16_t pos = 0; 9529 event[pos++] = HCI_EVENT_META_GAP; 9530 event[pos++] = 5; 9531 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9532 event[pos++] = status; 9533 event[pos++] = cig_id; 9534 little_endian_store_16(event, pos, cis_con_handle); 9535 pos += 2; 9536 hci_emit_event(event, pos, 0); 9537 } 9538 9539 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9540 uint8_t event [4]; 9541 uint16_t pos = 0; 9542 event[pos++] = HCI_EVENT_META_GAP; 9543 event[pos++] = 2; 9544 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9545 event[pos++] = big->big_handle; 9546 hci_emit_event(event, pos, 0); 9547 } 9548 9549 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9550 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9551 uint16_t pos = 0; 9552 event[pos++] = HCI_EVENT_META_GAP; 9553 event[pos++] = 4; 9554 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9555 event[pos++] = status; 9556 event[pos++] = big_sync->big_handle; 9557 event[pos++] = big_sync->num_bis; 9558 uint8_t i; 9559 for (i=0;i<big_sync->num_bis;i++){ 9560 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9561 pos += 2; 9562 } 9563 hci_emit_event(event, pos, 0); 9564 } 9565 9566 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9567 uint8_t event [4]; 9568 uint16_t pos = 0; 9569 event[pos++] = HCI_EVENT_META_GAP; 9570 event[pos++] = 2; 9571 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9572 event[pos++] = big_handle; 9573 hci_emit_event(event, pos, 0); 9574 } 9575 9576 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9577 uint8_t event[6]; 9578 uint16_t pos = 0; 9579 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9580 event[pos++] = sizeof(event) - 2; 9581 event[pos++] = big->big_handle; 9582 event[pos++] = bis_index; 9583 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9584 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9585 } 9586 9587 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9588 uint8_t event[4]; 9589 uint16_t pos = 0; 9590 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9591 event[pos++] = sizeof(event) - 2; 9592 little_endian_store_16(event, pos, cis_con_handle); 9593 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9594 } 9595 9596 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9597 btstack_linked_list_iterator_t it; 9598 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9599 while (btstack_linked_list_iterator_has_next(&it)){ 9600 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9601 if ( big->big_handle == big_handle ) { 9602 return big; 9603 } 9604 } 9605 return NULL; 9606 } 9607 9608 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9609 btstack_linked_list_iterator_t it; 9610 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9611 while (btstack_linked_list_iterator_has_next(&it)){ 9612 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9613 if ( big_sync->big_handle == big_handle ) { 9614 return big_sync; 9615 } 9616 } 9617 return NULL; 9618 } 9619 9620 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9621 hci_stack->iso_packets_to_queue = num_packets; 9622 } 9623 9624 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9625 btstack_linked_list_iterator_t it; 9626 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9627 while (btstack_linked_list_iterator_has_next(&it)){ 9628 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9629 if ( cig->cig_id == cig_id ) { 9630 return cig; 9631 } 9632 } 9633 return NULL; 9634 } 9635 9636 static void hci_iso_notify_can_send_now(void){ 9637 9638 // BIG 9639 9640 btstack_linked_list_iterator_t it; 9641 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9642 while (btstack_linked_list_iterator_has_next(&it)){ 9643 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9644 // track number completed packet timestamps 9645 if (big->num_completed_timestamp_current_valid){ 9646 big->num_completed_timestamp_current_valid = false; 9647 if (big->num_completed_timestamp_previous_valid){ 9648 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9649 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9650 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9651 big->num_completed_timestamp_previous_ms); 9652 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9653 // to catch up, skip packet on all BIS 9654 uint8_t i; 9655 for (i=0;i<big->num_bis;i++){ 9656 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9657 if (iso_stream){ 9658 iso_stream->num_packets_to_skip++; 9659 } 9660 } 9661 } 9662 } 9663 big->num_completed_timestamp_previous_valid = true; 9664 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9665 } 9666 9667 if (big->can_send_now_requested){ 9668 // check if no outgoing iso packets pending and no can send now have to be emitted 9669 uint8_t i; 9670 bool can_send = true; 9671 uint8_t num_iso_queued_minimum = 0; 9672 for (i=0;i<big->num_bis;i++){ 9673 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9674 if (iso_stream == NULL) continue; 9675 // handle case where individual ISO packet was sent too late: 9676 // for each additionally queued packet, a new one needs to get skipped 9677 if (i==0){ 9678 num_iso_queued_minimum = iso_stream->num_packets_sent; 9679 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9680 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9681 iso_stream->num_packets_to_skip += num_packets_to_skip; 9682 iso_stream->num_packets_sent -= num_packets_to_skip; 9683 } 9684 // check if we can send now 9685 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9686 can_send = false; 9687 break; 9688 } 9689 } 9690 if (can_send){ 9691 // propagate can send now to individual streams 9692 big->can_send_now_requested = false; 9693 for (i=0;i<big->num_bis;i++){ 9694 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9695 iso_stream->emit_ready_to_send = true; 9696 } 9697 } 9698 } 9699 } 9700 9701 if (hci_stack->hci_packet_buffer_reserved) return; 9702 9703 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9704 while (btstack_linked_list_iterator_has_next(&it)){ 9705 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9706 // report bis ready 9707 uint8_t i; 9708 for (i=0;i<big->num_bis;i++){ 9709 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9710 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9711 iso_stream->emit_ready_to_send = false; 9712 hci_emit_bis_can_send_now(big, i); 9713 break; 9714 } 9715 } 9716 } 9717 9718 // CIS 9719 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9720 while (btstack_linked_list_iterator_has_next(&it)) { 9721 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9722 if ((iso_stream->can_send_now_requested) && 9723 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9724 iso_stream->can_send_now_requested = false; 9725 hci_emit_cis_can_send_now(iso_stream->con_handle); 9726 } 9727 } 9728 } 9729 9730 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9731 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9732 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9733 } 9734 if (big_params->num_bis == 0){ 9735 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9736 } 9737 if (big_params->num_bis > MAX_NR_BIS){ 9738 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9739 } 9740 9741 // reserve ISO Streams 9742 uint8_t i; 9743 uint8_t status = ERROR_CODE_SUCCESS; 9744 for (i=0;i<big_params->num_bis;i++){ 9745 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_CON_HANDLE_INVALID, big_params->big_handle, 9746 HCI_ISO_STREAM_STATE_REQUESTED); 9747 if (status != ERROR_CODE_SUCCESS) { 9748 break; 9749 } 9750 } 9751 9752 // free structs on error 9753 if (status != ERROR_CODE_SUCCESS){ 9754 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9755 return status; 9756 } 9757 9758 le_audio_big_t * big = storage; 9759 big->big_handle = big_params->big_handle; 9760 big->params = big_params; 9761 big->state = LE_AUDIO_BIG_STATE_CREATE; 9762 big->num_bis = big_params->num_bis; 9763 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9764 9765 hci_run(); 9766 9767 return ERROR_CODE_SUCCESS; 9768 } 9769 9770 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9771 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9772 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9773 } 9774 if (big_sync_params->num_bis == 0){ 9775 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9776 } 9777 if (big_sync_params->num_bis > MAX_NR_BIS){ 9778 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9779 } 9780 9781 le_audio_big_sync_t * big_sync = storage; 9782 big_sync->big_handle = big_sync_params->big_handle; 9783 big_sync->params = big_sync_params; 9784 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9785 big_sync->num_bis = big_sync_params->num_bis; 9786 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9787 9788 hci_run(); 9789 9790 return ERROR_CODE_SUCCESS; 9791 } 9792 9793 uint8_t gap_big_terminate(uint8_t big_handle){ 9794 le_audio_big_t * big = hci_big_for_handle(big_handle); 9795 if (big == NULL){ 9796 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9797 } 9798 switch (big->state){ 9799 case LE_AUDIO_BIG_STATE_CREATE: 9800 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9801 hci_emit_big_terminated(big); 9802 break; 9803 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9804 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9805 break; 9806 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9807 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9808 case LE_AUDIO_BIG_STATE_ACTIVE: 9809 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9810 hci_run(); 9811 break; 9812 default: 9813 return ERROR_CODE_COMMAND_DISALLOWED; 9814 } 9815 return ERROR_CODE_SUCCESS; 9816 } 9817 9818 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9819 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9820 if (big_sync == NULL){ 9821 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9822 } 9823 switch (big_sync->state){ 9824 case LE_AUDIO_BIG_STATE_CREATE: 9825 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9826 hci_emit_big_sync_stopped(big_handle); 9827 break; 9828 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9829 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9830 break; 9831 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9832 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9833 case LE_AUDIO_BIG_STATE_ACTIVE: 9834 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9835 hci_run(); 9836 break; 9837 default: 9838 return ERROR_CODE_COMMAND_DISALLOWED; 9839 } 9840 return ERROR_CODE_SUCCESS; 9841 } 9842 9843 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9844 le_audio_big_t * big = hci_big_for_handle(big_handle); 9845 if (big == NULL){ 9846 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9847 } 9848 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9849 return ERROR_CODE_COMMAND_DISALLOWED; 9850 } 9851 big->can_send_now_requested = true; 9852 hci_iso_notify_can_send_now(); 9853 return ERROR_CODE_SUCCESS; 9854 } 9855 9856 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9857 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9858 if (iso_stream == NULL){ 9859 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9860 } 9861 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9862 return ERROR_CODE_COMMAND_DISALLOWED; 9863 } 9864 iso_stream->can_send_now_requested = true; 9865 hci_iso_notify_can_send_now(); 9866 return ERROR_CODE_SUCCESS; 9867 } 9868 9869 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9870 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9871 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9872 } 9873 if (cig_params->num_cis == 0){ 9874 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9875 } 9876 if (cig_params->num_cis > MAX_NR_BIS){ 9877 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9878 } 9879 9880 // reserve ISO Streams 9881 uint8_t i; 9882 uint8_t status = ERROR_CODE_SUCCESS; 9883 for (i=0;i<cig_params->num_cis;i++){ 9884 status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_CON_HANDLE_INVALID, cig_params->cig_id, 9885 HCI_ISO_STREAM_STATE_REQUESTED); 9886 if (status != ERROR_CODE_SUCCESS) { 9887 break; 9888 } 9889 } 9890 9891 // free structs on error 9892 if (status != ERROR_CODE_SUCCESS){ 9893 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 9894 return status; 9895 } 9896 9897 le_audio_cig_t * cig = storage; 9898 cig->cig_id = cig_params->cig_id; 9899 cig->num_cis = cig_params->num_cis; 9900 cig->params = cig_params; 9901 cig->state = LE_AUDIO_CIG_STATE_CREATE; 9902 for (i=0;i<cig->num_cis;i++){ 9903 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 9904 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 9905 cig->cis_setup_active[i] = false; 9906 cig->cis_established[i] = false; 9907 } 9908 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 9909 9910 hci_run(); 9911 9912 return ERROR_CODE_SUCCESS; 9913 } 9914 9915 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 9916 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 9917 if (cig == NULL){ 9918 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9919 } 9920 9921 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 9922 return ERROR_CODE_COMMAND_DISALLOWED; 9923 } 9924 9925 // store ACL Connection Handles 9926 uint8_t i; 9927 for (i=0;i<cig->num_cis;i++){ 9928 // check that all con handles exit 9929 hci_con_handle_t cis_handle = cis_con_handles[i]; 9930 uint8_t j; 9931 bool found = false; 9932 for (j=0;j<cig->num_cis;j++){ 9933 if (cig->cis_con_handles[j] == cis_handle){ 9934 cig->acl_con_handles[j] = acl_con_handles[j]; 9935 found = true; 9936 break; 9937 } 9938 } 9939 if (!found){ 9940 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9941 } 9942 } 9943 9944 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 9945 hci_run(); 9946 9947 return ERROR_CODE_SUCCESS; 9948 } 9949 9950 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_con_handle, hci_iso_stream_state_t state){ 9951 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9952 if (iso_stream != NULL){ 9953 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9954 } 9955 9956 uint8_t status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, cis_con_handle, 9957 HCI_ISO_GROUP_ID_INVALID, state); 9958 if (status == ERROR_CODE_SUCCESS){ 9959 return status; 9960 } 9961 9962 hci_run(); 9963 return ERROR_CODE_SUCCESS; 9964 } 9965 9966 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 9967 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 9968 } 9969 9970 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 9971 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 9972 } 9973 9974 9975 #endif 9976 #endif /* ENABLE_BLE */ 9977 9978 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9979 void hci_setup_test_connections_fuzz(void){ 9980 hci_connection_t * conn; 9981 9982 // default address: 66:55:44:33:00:01 9983 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9984 9985 // setup Controller info 9986 hci_stack->num_cmd_packets = 255; 9987 hci_stack->acl_packets_total_num = 255; 9988 9989 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9990 addr[5] = 0x01; 9991 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9992 conn->con_handle = addr[5]; 9993 conn->role = HCI_ROLE_SLAVE; 9994 conn->state = RECEIVED_CONNECTION_REQUEST; 9995 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9996 9997 // setup incoming Classic SCO connection with con handle 0x0002 9998 addr[5] = 0x02; 9999 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10000 conn->con_handle = addr[5]; 10001 conn->role = HCI_ROLE_SLAVE; 10002 conn->state = RECEIVED_CONNECTION_REQUEST; 10003 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10004 10005 // setup ready Classic ACL connection with con handle 0x0003 10006 addr[5] = 0x03; 10007 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10008 conn->con_handle = addr[5]; 10009 conn->role = HCI_ROLE_SLAVE; 10010 conn->state = OPEN; 10011 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10012 10013 // setup ready Classic SCO connection with con handle 0x0004 10014 addr[5] = 0x04; 10015 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10016 conn->con_handle = addr[5]; 10017 conn->role = HCI_ROLE_SLAVE; 10018 conn->state = OPEN; 10019 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10020 10021 // setup ready LE ACL connection with con handle 0x005 and public address 10022 addr[5] = 0x05; 10023 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 10024 conn->con_handle = addr[5]; 10025 conn->role = HCI_ROLE_SLAVE; 10026 conn->state = OPEN; 10027 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10028 conn->sm_connection.sm_connection_encrypted = 1; 10029 } 10030 10031 void hci_free_connections_fuzz(void){ 10032 btstack_linked_list_iterator_t it; 10033 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10034 while (btstack_linked_list_iterator_has_next(&it)){ 10035 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10036 btstack_linked_list_iterator_remove(&it); 10037 btstack_memory_hci_connection_free(con); 10038 } 10039 } 10040 void hci_simulate_working_fuzz(void){ 10041 hci_stack->le_scanning_param_update = false; 10042 hci_init_done(); 10043 hci_stack->num_cmd_packets = 255; 10044 } 10045 #endif 10046