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 & Infineon to Broadcom 2769 switch (manufacturer){ 2770 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2771 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2772 log_info("Treat Cypress/Infineon as Broadcom"); 2773 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2774 little_endian_store_16(packet, 10, manufacturer); 2775 break; 2776 default: 2777 break; 2778 } 2779 hci_stack->manufacturer = manufacturer; 2780 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2781 break; 2782 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2783 hci_store_local_supported_commands(packet); 2784 break; 2785 #ifdef ENABLE_CLASSIC 2786 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2787 if (packet[5]) return; 2788 hci_stack->synchronous_flow_control_enabled = 1; 2789 break; 2790 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2791 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2792 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2793 conn = hci_connection_for_handle(handle); 2794 if (conn != NULL) { 2795 uint8_t key_size = 0; 2796 if (status == 0){ 2797 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2798 log_info("Handle %04x key Size: %u", handle, key_size); 2799 } else { 2800 key_size = 1; 2801 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2802 } 2803 hci_handle_read_encryption_key_size_complete(conn, key_size); 2804 } 2805 break; 2806 // assert pairing complete event is emitted. 2807 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2808 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2809 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2810 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2811 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2812 // lookup connection by gap pairing addr 2813 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2814 if (conn == NULL) break; 2815 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2816 break; 2817 2818 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2819 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2820 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2821 uint8_t event[67]; 2822 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2823 event[1] = 65; 2824 (void)memset(&event[2], 0, 65); 2825 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2826 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2827 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2828 event[2] = 3; 2829 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2830 } else { 2831 event[2] = 1; 2832 } 2833 } 2834 hci_emit_event(event, sizeof(event), 0); 2835 break; 2836 } 2837 2838 // note: only needed if user does not provide OOB data 2839 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2840 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2841 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2842 if (conn == NULL) break; 2843 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2844 break; 2845 #endif 2846 #endif 2847 #ifdef ENABLE_BLE 2848 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2849 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2850 // lookup CIG 2851 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2852 if (cig != NULL){ 2853 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2854 uint8_t i = 0; 2855 if (status == ERROR_CODE_SUCCESS){ 2856 // assign CIS handles to pre-allocated CIS 2857 btstack_linked_list_iterator_t it; 2858 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2859 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2860 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2861 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2862 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2863 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2864 iso_stream->con_handle = cis_handle; 2865 cig->cis_con_handles[i] = cis_handle; 2866 i++; 2867 } 2868 } 2869 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2870 hci_emit_cig_created(cig, status); 2871 } else { 2872 hci_emit_cig_created(cig, status); 2873 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2874 } 2875 } 2876 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2877 break; 2878 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2879 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2880 if (status != ERROR_CODE_SUCCESS){ 2881 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2882 } 2883 break; 2884 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2885 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2886 if (status != ERROR_CODE_SUCCESS){ 2887 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2888 } 2889 break; 2890 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2891 // lookup BIG by state 2892 btstack_linked_list_iterator_t it; 2893 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2894 while (btstack_linked_list_iterator_has_next(&it)) { 2895 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2896 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2897 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2898 if (status == ERROR_CODE_SUCCESS){ 2899 big->state_vars.next_bis++; 2900 if (big->state_vars.next_bis == big->num_bis){ 2901 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2902 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2903 } else { 2904 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2905 } 2906 } else { 2907 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2908 big->state_vars.status = status; 2909 } 2910 return; 2911 } 2912 } 2913 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2914 while (btstack_linked_list_iterator_has_next(&it)) { 2915 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2916 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2917 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2918 if (status == ERROR_CODE_SUCCESS){ 2919 big_sync->state_vars.next_bis++; 2920 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2921 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2922 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2923 } else { 2924 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2925 } 2926 } else { 2927 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2928 big_sync->state_vars.status = status; 2929 } 2930 return; 2931 } 2932 } 2933 // Lookup CIS via active group operation 2934 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2935 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2936 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2937 2938 // lookup CIS by state 2939 btstack_linked_list_iterator_t it; 2940 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2941 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2942 while (btstack_linked_list_iterator_has_next(&it)){ 2943 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2944 handle = iso_stream->con_handle; 2945 switch (iso_stream->state){ 2946 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2947 if (status != ERROR_CODE_SUCCESS){ 2948 hci_iso_stream_finalize(iso_stream); 2949 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2950 break; 2951 } 2952 if (iso_stream->max_sdu_c_to_p > 0){ 2953 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2954 } else { 2955 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2956 } 2957 break; 2958 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2959 if (status != ERROR_CODE_SUCCESS){ 2960 hci_iso_stream_finalize(iso_stream); 2961 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2962 break; 2963 } 2964 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2965 break; 2966 default: 2967 break; 2968 } 2969 } 2970 } else { 2971 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2972 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2973 if (cig != NULL) { 2974 // emit cis created if all ISO Paths have been created 2975 // assume we are central 2976 uint8_t cis_index = cig->state_vars.next_cis >> 1; 2977 uint8_t cis_direction = cig->state_vars.next_cis & 1; 2978 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 2979 // if outgoing has been setup, or incoming was setup but outgoing not required 2980 if ((cis_direction == 1) || (outgoing_needed == false)){ 2981 hci_emit_cis_created(cig->cig_id, cig->cis_con_handles[cis_index], status); 2982 } 2983 // next state 2984 cig->state_vars.next_cis++; 2985 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 2986 } 2987 } 2988 } 2989 break; 2990 } 2991 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2992 // lookup BIG by state 2993 btstack_linked_list_iterator_t it; 2994 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2995 while (btstack_linked_list_iterator_has_next(&it)) { 2996 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2997 uint8_t big_handle = big_sync->big_handle; 2998 switch (big_sync->state){ 2999 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3000 btstack_linked_list_iterator_remove(&it); 3001 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3002 return; 3003 default: 3004 btstack_linked_list_iterator_remove(&it); 3005 hci_emit_big_sync_stopped(big_handle); 3006 return; 3007 } 3008 } 3009 break; 3010 } 3011 #endif 3012 #endif 3013 default: 3014 break; 3015 } 3016 } 3017 3018 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3019 UNUSED(size); 3020 3021 // get num cmd packets - limit to 1 to reduce complexity 3022 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3023 3024 // get opcode and command status 3025 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3026 3027 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3028 uint8_t status = hci_event_command_status_get_status(packet); 3029 #endif 3030 3031 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3032 bd_addr_type_t addr_type; 3033 bd_addr_t addr; 3034 #endif 3035 3036 switch (opcode){ 3037 #ifdef ENABLE_CLASSIC 3038 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3039 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3040 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3041 #endif 3042 #ifdef ENABLE_LE_CENTRAL 3043 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3044 #endif 3045 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3046 addr_type = hci_stack->outgoing_addr_type; 3047 memcpy(addr, hci_stack->outgoing_addr, 6); 3048 3049 // reset outgoing address info 3050 memset(hci_stack->outgoing_addr, 0, 6); 3051 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3052 3053 // on error 3054 if (status != ERROR_CODE_SUCCESS){ 3055 #ifdef ENABLE_LE_CENTRAL 3056 if (hci_is_le_connection_type(addr_type)){ 3057 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3058 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3059 } 3060 #endif 3061 // error => outgoing connection failed 3062 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3063 if (conn != NULL){ 3064 hci_handle_connection_failed(conn, status); 3065 } 3066 } 3067 break; 3068 #endif 3069 #ifdef ENABLE_CLASSIC 3070 case HCI_OPCODE_HCI_INQUIRY: 3071 if (status == ERROR_CODE_SUCCESS) { 3072 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3073 } else { 3074 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3075 } 3076 break; 3077 #endif 3078 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3079 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3080 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3081 if (status == ERROR_CODE_SUCCESS){ 3082 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3083 } else { 3084 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3085 } 3086 break; 3087 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3088 default: 3089 break; 3090 } 3091 } 3092 3093 #ifdef ENABLE_BLE 3094 static void event_handle_le_connection_complete(const uint8_t * packet){ 3095 bd_addr_t addr; 3096 bd_addr_type_t addr_type; 3097 hci_connection_t * conn; 3098 3099 // Connection management 3100 reverse_bd_addr(&packet[8], addr); 3101 addr_type = (bd_addr_type_t)packet[7]; 3102 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3103 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3104 3105 #ifdef ENABLE_LE_CENTRAL 3106 // handle error: error is reported only to the initiator -> outgoing connection 3107 if (packet[3]){ 3108 3109 // handle cancelled outgoing connection 3110 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3111 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3112 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3113 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3114 // reset state 3115 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3116 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3117 // get outgoing connection conn struct for direct connect 3118 conn = gap_get_outgoing_connection(); 3119 } 3120 3121 // outgoing le connection establishment is done 3122 if (conn){ 3123 // remove entry 3124 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3125 btstack_memory_hci_connection_free( conn ); 3126 } 3127 return; 3128 } 3129 #endif 3130 3131 // on success, both hosts receive connection complete event 3132 if (packet[6] == HCI_ROLE_MASTER){ 3133 #ifdef ENABLE_LE_CENTRAL 3134 // if we're master on an le connection, it was an outgoing connection and we're done with it 3135 // note: no hci_connection_t object exists yet for connect with whitelist 3136 if (hci_is_le_connection_type(addr_type)){ 3137 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3138 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3139 } 3140 #endif 3141 } else { 3142 #ifdef ENABLE_LE_PERIPHERAL 3143 // if we're slave, it was an incoming connection, advertisements have stopped 3144 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3145 #endif 3146 } 3147 3148 // LE connections are auto-accepted, so just create a connection if there isn't one already 3149 if (!conn){ 3150 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3151 } 3152 3153 // no memory, sorry. 3154 if (!conn){ 3155 return; 3156 } 3157 3158 conn->state = OPEN; 3159 conn->role = packet[6]; 3160 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3161 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3162 3163 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3164 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3165 3166 #ifdef ENABLE_LE_PERIPHERAL 3167 if (packet[6] == HCI_ROLE_SLAVE){ 3168 hci_update_advertisements_enabled_for_current_roles(); 3169 } 3170 #endif 3171 3172 // init unenhanced att bearer mtu 3173 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3174 conn->att_connection.mtu_exchanged = false; 3175 3176 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3177 3178 // restart timer 3179 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3180 // btstack_run_loop_add_timer(&conn->timeout); 3181 3182 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3183 3184 hci_emit_nr_connections_changed(); 3185 } 3186 #endif 3187 3188 #ifdef ENABLE_CLASSIC 3189 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){ 3190 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3191 // LEVEL_4 is tested by l2cap 3192 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3193 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3194 if (level >= LEVEL_3){ 3195 // MITM not possible without keyboard or display 3196 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3197 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3198 3199 // MITM possible if one side has keyboard and the other has keyboard or display 3200 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3201 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3202 3203 // MITM not possible if one side has only display and other side has no keyboard 3204 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3205 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3206 } 3207 // LEVEL 2 requires SSP, which is a given 3208 return true; 3209 } 3210 3211 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3212 // get requested security level 3213 gap_security_level_t requested_security_level = conn->requested_security_level; 3214 if (hci_stack->gap_secure_connections_only_mode){ 3215 requested_security_level = LEVEL_4; 3216 } 3217 3218 // assess security: LEVEL 4 requires SC 3219 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3220 if ((requested_security_level == LEVEL_4) && 3221 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3222 !hci_remote_sc_enabled(conn)){ 3223 log_info("Level 4 required, but SC not supported -> abort"); 3224 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3225 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3226 return; 3227 } 3228 3229 // assess security based on io capabilities 3230 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3231 // responder: fully validate io caps of both sides as well as OOB data 3232 bool security_possible = false; 3233 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3234 3235 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3236 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3237 // so we merge the OOB data availability 3238 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3239 if (conn->classic_oob_c_192 != NULL){ 3240 have_oob_data |= 1; 3241 } 3242 if (conn->classic_oob_c_256 != NULL){ 3243 have_oob_data |= 2; 3244 } 3245 // for up to Level 3, either P-192 as well as P-256 will do 3246 // 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 3247 // if remote does not SC, we should not receive P-256 data either 3248 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3249 security_possible = true; 3250 } 3251 // for Level 4, P-256 is needed 3252 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3253 security_possible = true; 3254 } 3255 #endif 3256 3257 if (security_possible == false){ 3258 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3259 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3260 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3261 return; 3262 } 3263 } else { 3264 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3265 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3266 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3267 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3268 log_info("Level 3+ required, but no input/output -> abort"); 3269 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3270 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3271 return; 3272 } 3273 #endif 3274 #endif 3275 } 3276 3277 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3278 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3279 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3280 } else { 3281 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3282 } 3283 #endif 3284 } 3285 3286 #endif 3287 3288 static void event_handler(uint8_t *packet, uint16_t size){ 3289 3290 uint16_t event_length = packet[1]; 3291 3292 // assert packet is complete 3293 if (size != (event_length + 2u)){ 3294 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3295 return; 3296 } 3297 3298 hci_con_handle_t handle; 3299 hci_connection_t * conn; 3300 int i; 3301 3302 #ifdef ENABLE_CLASSIC 3303 hci_link_type_t link_type; 3304 bd_addr_t addr; 3305 bd_addr_type_t addr_type; 3306 #endif 3307 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3308 hci_iso_stream_t * iso_stream; 3309 le_audio_big_t * big; 3310 le_audio_big_sync_t * big_sync; 3311 #endif 3312 3313 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3314 3315 switch (hci_event_packet_get_type(packet)) { 3316 3317 case HCI_EVENT_COMMAND_COMPLETE: 3318 handle_command_complete_event(packet, size); 3319 break; 3320 3321 case HCI_EVENT_COMMAND_STATUS: 3322 handle_command_status_event(packet, size); 3323 break; 3324 3325 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3326 if (size < 3) return; 3327 uint16_t num_handles = packet[2]; 3328 if (size != (3u + num_handles * 4u)) return; 3329 #ifdef ENABLE_CLASSIC 3330 bool notify_sco = false; 3331 #endif 3332 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3333 bool notify_iso = false; 3334 #endif 3335 uint16_t offset = 3; 3336 for (i=0; i<num_handles;i++){ 3337 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3338 offset += 2u; 3339 uint16_t num_packets = little_endian_read_16(packet, offset); 3340 offset += 2u; 3341 3342 conn = hci_connection_for_handle(handle); 3343 if (conn != NULL) { 3344 3345 if (conn->num_packets_sent >= num_packets) { 3346 conn->num_packets_sent -= num_packets; 3347 } else { 3348 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3349 conn->num_packets_sent = 0; 3350 } 3351 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3352 #ifdef ENABLE_CLASSIC 3353 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3354 notify_sco = true; 3355 } 3356 #endif 3357 } 3358 3359 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3360 hci_controller_dump_packets(); 3361 #endif 3362 3363 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3364 if (conn == NULL){ 3365 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3366 if (iso_stream != NULL){ 3367 if (iso_stream->num_packets_sent >= num_packets) { 3368 iso_stream->num_packets_sent -= num_packets; 3369 } else { 3370 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3371 iso_stream->num_packets_sent = 0; 3372 } 3373 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3374 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3375 if (big != NULL){ 3376 big->num_completed_timestamp_current_valid = true; 3377 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3378 } 3379 } 3380 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3381 num_packets, handle, iso_stream->num_packets_sent); 3382 notify_iso = true; 3383 } 3384 } 3385 #endif 3386 } 3387 3388 #ifdef ENABLE_CLASSIC 3389 if (notify_sco){ 3390 hci_notify_if_sco_can_send_now(); 3391 } 3392 #endif 3393 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3394 if (notify_iso){ 3395 hci_iso_notify_can_send_now(); 3396 } 3397 #endif 3398 break; 3399 } 3400 3401 #ifdef ENABLE_CLASSIC 3402 case HCI_EVENT_FLUSH_OCCURRED: 3403 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3404 handle = hci_event_flush_occurred_get_handle(packet); 3405 conn = hci_connection_for_handle(handle); 3406 if (conn) { 3407 log_info("Flush occurred, disconnect 0x%04x", handle); 3408 conn->state = SEND_DISCONNECT; 3409 } 3410 break; 3411 3412 case HCI_EVENT_INQUIRY_COMPLETE: 3413 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3414 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3415 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3416 hci_emit_event(event, sizeof(event), 1); 3417 } 3418 break; 3419 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3420 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3421 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3422 } 3423 break; 3424 case HCI_EVENT_CONNECTION_REQUEST: 3425 reverse_bd_addr(&packet[2], addr); 3426 link_type = (hci_link_type_t) packet[11]; 3427 3428 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3429 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3430 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3431 bd_addr_copy(hci_stack->decline_addr, addr); 3432 break; 3433 } 3434 3435 if (hci_stack->gap_classic_accept_callback != NULL){ 3436 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3437 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3438 bd_addr_copy(hci_stack->decline_addr, addr); 3439 break; 3440 } 3441 } 3442 3443 // TODO: eval COD 8-10 3444 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3445 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3446 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3447 if (!conn) { 3448 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3449 } 3450 if (!conn) { 3451 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3452 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3453 bd_addr_copy(hci_stack->decline_addr, addr); 3454 hci_run(); 3455 // avoid event to higher layer 3456 return; 3457 } 3458 conn->role = HCI_ROLE_SLAVE; 3459 conn->state = RECEIVED_CONNECTION_REQUEST; 3460 // store info about eSCO 3461 if (link_type == HCI_LINK_TYPE_ESCO){ 3462 conn->remote_supported_features[0] |= 1; 3463 } 3464 hci_run(); 3465 break; 3466 3467 case HCI_EVENT_CONNECTION_COMPLETE: 3468 // Connection management 3469 reverse_bd_addr(&packet[5], addr); 3470 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3471 addr_type = BD_ADDR_TYPE_ACL; 3472 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3473 if (conn) { 3474 switch (conn->state){ 3475 // expected states 3476 case ACCEPTED_CONNECTION_REQUEST: 3477 case SENT_CREATE_CONNECTION: 3478 break; 3479 // unexpected state -> ignore 3480 default: 3481 // don't forward event to app 3482 return; 3483 } 3484 if (!packet[2]){ 3485 conn->state = OPEN; 3486 conn->con_handle = little_endian_read_16(packet, 3); 3487 3488 // trigger write supervision timeout if we're master 3489 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3490 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3491 } 3492 3493 // trigger write automatic flush timeout 3494 if (hci_stack->automatic_flush_timeout != 0){ 3495 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3496 } 3497 3498 // restart timer 3499 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3500 btstack_run_loop_add_timer(&conn->timeout); 3501 3502 // trigger remote features for dedicated bonding 3503 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3504 hci_trigger_remote_features_for_connection(conn); 3505 } 3506 3507 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3508 3509 hci_emit_nr_connections_changed(); 3510 } else { 3511 // connection failed 3512 hci_handle_connection_failed(conn, packet[2]); 3513 } 3514 } 3515 break; 3516 3517 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3518 reverse_bd_addr(&packet[5], addr); 3519 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3520 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3521 btstack_assert(conn != NULL); 3522 3523 if (packet[2] != ERROR_CODE_SUCCESS){ 3524 // connection failed, remove entry 3525 hci_handle_connection_failed(conn, packet[2]); 3526 break; 3527 } 3528 3529 conn->state = OPEN; 3530 conn->con_handle = little_endian_read_16(packet, 3); 3531 3532 #ifdef ENABLE_SCO_OVER_HCI 3533 // update SCO 3534 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3535 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3536 } 3537 // trigger can send now 3538 if (hci_have_usb_transport()){ 3539 hci_stack->sco_can_send_now = true; 3540 } 3541 #endif 3542 #ifdef HAVE_SCO_TRANSPORT 3543 // configure sco transport 3544 if (hci_stack->sco_transport != NULL){ 3545 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3546 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3547 } 3548 #endif 3549 break; 3550 3551 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3552 handle = little_endian_read_16(packet, 3); 3553 conn = hci_connection_for_handle(handle); 3554 if (!conn) break; 3555 if (!packet[2]){ 3556 const uint8_t * features = &packet[5]; 3557 hci_handle_remote_features_page_0(conn, features); 3558 3559 // read extended features if possible 3560 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3561 && ((conn->remote_supported_features[0] & 2) != 0)) { 3562 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3563 break; 3564 } 3565 } 3566 hci_handle_remote_features_received(conn); 3567 break; 3568 3569 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3570 handle = little_endian_read_16(packet, 3); 3571 conn = hci_connection_for_handle(handle); 3572 if (!conn) break; 3573 // status = ok, page = 1 3574 if (!packet[2]) { 3575 uint8_t page_number = packet[5]; 3576 uint8_t maximum_page_number = packet[6]; 3577 const uint8_t * features = &packet[7]; 3578 bool done = false; 3579 switch (page_number){ 3580 case 1: 3581 hci_handle_remote_features_page_1(conn, features); 3582 if (maximum_page_number >= 2){ 3583 // get Secure Connections (Controller) from Page 2 if available 3584 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3585 } else { 3586 // otherwise, assume SC (Controller) == SC (Host) 3587 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3588 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3589 } 3590 done = true; 3591 } 3592 break; 3593 case 2: 3594 hci_handle_remote_features_page_2(conn, features); 3595 done = true; 3596 break; 3597 default: 3598 break; 3599 } 3600 if (!done) break; 3601 } 3602 hci_handle_remote_features_received(conn); 3603 break; 3604 3605 case HCI_EVENT_LINK_KEY_REQUEST: 3606 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3607 hci_event_link_key_request_get_bd_addr(packet, addr); 3608 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3609 if (!conn) break; 3610 3611 // lookup link key in db if not cached 3612 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3613 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3614 } 3615 3616 // response sent by hci_run() 3617 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3618 #endif 3619 break; 3620 3621 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3622 hci_event_link_key_request_get_bd_addr(packet, addr); 3623 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3624 if (!conn) break; 3625 3626 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3627 3628 // CVE-2020-26555: ignore NULL link key 3629 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3630 if (btstack_is_null(&packet[8], 16)) break; 3631 3632 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3633 // Change Connection Encryption keeps link key type 3634 if (link_key_type != CHANGED_COMBINATION_KEY){ 3635 conn->link_key_type = link_key_type; 3636 } 3637 3638 // cache link key. link keys stored in little-endian format for legacy reasons 3639 memcpy(&conn->link_key, &packet[8], 16); 3640 3641 // only store link key: 3642 // - if bondable enabled 3643 if (hci_stack->bondable == false) break; 3644 // - if security level sufficient 3645 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3646 // - for SSP, also check if remote side requested bonding as well 3647 if (conn->link_key_type != COMBINATION_KEY){ 3648 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3649 if (!remote_bonding){ 3650 break; 3651 } 3652 } 3653 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3654 break; 3655 } 3656 3657 case HCI_EVENT_PIN_CODE_REQUEST: 3658 hci_event_pin_code_request_get_bd_addr(packet, addr); 3659 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3660 if (!conn) break; 3661 3662 hci_pairing_started(conn, false); 3663 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3664 if (!hci_stack->bondable ){ 3665 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3666 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3667 hci_run(); 3668 return; 3669 } 3670 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3671 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3672 log_info("Level 4 required, but SC not supported -> abort"); 3673 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3674 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3675 hci_run(); 3676 return; 3677 } 3678 break; 3679 3680 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3681 hci_event_io_capability_response_get_bd_addr(packet, addr); 3682 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3683 if (!conn) break; 3684 3685 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3686 hci_pairing_started(conn, true); 3687 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3688 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3689 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3690 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3691 #endif 3692 break; 3693 3694 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3695 hci_event_io_capability_response_get_bd_addr(packet, addr); 3696 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3697 if (!conn) break; 3698 3699 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3700 hci_connection_timestamp(conn); 3701 hci_pairing_started(conn, true); 3702 break; 3703 3704 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3705 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3706 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3707 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3708 if (!conn) break; 3709 3710 hci_connection_timestamp(conn); 3711 3712 hci_pairing_started(conn, true); 3713 3714 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3715 break; 3716 #endif 3717 3718 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3719 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3720 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3721 if (!conn) break; 3722 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3723 if (hci_stack->ssp_auto_accept){ 3724 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3725 }; 3726 } else { 3727 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3728 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3729 // don't forward event to app 3730 hci_run(); 3731 return; 3732 } 3733 break; 3734 3735 case HCI_EVENT_USER_PASSKEY_REQUEST: 3736 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3737 if (hci_stack->ssp_auto_accept){ 3738 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3739 }; 3740 break; 3741 3742 case HCI_EVENT_MODE_CHANGE: 3743 handle = hci_event_mode_change_get_handle(packet); 3744 conn = hci_connection_for_handle(handle); 3745 if (!conn) break; 3746 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3747 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3748 break; 3749 #endif 3750 3751 case HCI_EVENT_ENCRYPTION_CHANGE: 3752 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3753 handle = hci_event_encryption_change_get_connection_handle(packet); 3754 conn = hci_connection_for_handle(handle); 3755 if (!conn) break; 3756 if (hci_event_encryption_change_get_status(packet) == 0u) { 3757 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3758 if (encryption_enabled){ 3759 if (hci_is_le_connection(conn)){ 3760 // For LE, we accept connection as encrypted 3761 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3762 } 3763 #ifdef ENABLE_CLASSIC 3764 else { 3765 3766 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3767 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3768 bool connected_uses_aes_ccm = encryption_enabled == 2; 3769 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3770 log_info("SC during pairing, but only E0 now -> abort"); 3771 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3772 break; 3773 } 3774 3775 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3776 if (connected_uses_aes_ccm){ 3777 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3778 } 3779 3780 #ifdef ENABLE_TESTING_SUPPORT 3781 // work around for issue with PTS dongle 3782 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3783 #endif 3784 // validate encryption key size 3785 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3786 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3787 // already got encryption key size 3788 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3789 } else { 3790 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3791 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3792 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3793 } else { 3794 // if not, pretend everything is perfect 3795 hci_handle_read_encryption_key_size_complete(conn, 16); 3796 } 3797 } 3798 } 3799 #endif 3800 } else { 3801 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3802 } 3803 } else { 3804 uint8_t status = hci_event_encryption_change_get_status(packet); 3805 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3806 conn->bonding_flags &= ~BONDING_DEDICATED; 3807 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3808 conn->bonding_status = status; 3809 } 3810 } 3811 3812 break; 3813 3814 #ifdef ENABLE_CLASSIC 3815 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3816 handle = hci_event_authentication_complete_get_connection_handle(packet); 3817 conn = hci_connection_for_handle(handle); 3818 if (!conn) break; 3819 3820 // clear authentication active flag 3821 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3822 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3823 3824 // authenticated only if auth status == 0 3825 if (hci_event_authentication_complete_get_status(packet) == 0){ 3826 // authenticated 3827 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3828 3829 // If not already encrypted, start encryption 3830 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3831 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3832 break; 3833 } 3834 } 3835 3836 // emit updated security level 3837 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3838 break; 3839 3840 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3841 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3842 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3843 if (!conn) break; 3844 3845 // treat successfully paired connection as authenticated 3846 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3847 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3848 } 3849 3850 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3851 break; 3852 #endif 3853 3854 // HCI_EVENT_DISCONNECTION_COMPLETE 3855 // has been split, to first notify stack before shutting connection down 3856 // see end of function, too. 3857 case HCI_EVENT_DISCONNECTION_COMPLETE: 3858 if (packet[2]) break; // status != 0 3859 handle = little_endian_read_16(packet, 3); 3860 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3861 if (hci_stack->acl_fragmentation_total_size > 0u) { 3862 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3863 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3864 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3865 hci_stack->acl_fragmentation_total_size = 0; 3866 hci_stack->acl_fragmentation_pos = 0; 3867 if (release_buffer){ 3868 hci_release_packet_buffer(); 3869 } 3870 } 3871 } 3872 3873 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3874 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3875 if (hci_stack->iso_fragmentation_total_size > 0u) { 3876 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3877 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3878 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3879 hci_stack->iso_fragmentation_total_size = 0; 3880 hci_stack->iso_fragmentation_pos = 0; 3881 if (release_buffer){ 3882 hci_release_packet_buffer(); 3883 } 3884 } 3885 } 3886 3887 // finalize iso stream if handle matches 3888 iso_stream = hci_iso_stream_for_con_handle(handle); 3889 if (iso_stream != NULL){ 3890 hci_iso_stream_finalize(iso_stream); 3891 break; 3892 } 3893 #endif 3894 3895 conn = hci_connection_for_handle(handle); 3896 if (!conn) break; 3897 #ifdef ENABLE_CLASSIC 3898 // pairing failed if it was ongoing 3899 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3900 #endif 3901 3902 // emit dedicatd bonding event 3903 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3904 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3905 } 3906 3907 // mark connection for shutdown, stop timers, reset state 3908 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3909 hci_connection_stop_timer(conn); 3910 hci_connection_init(conn); 3911 3912 #ifdef ENABLE_BLE 3913 #ifdef ENABLE_LE_PERIPHERAL 3914 // re-enable advertisements for le connections if active 3915 if (hci_is_le_connection(conn)){ 3916 hci_update_advertisements_enabled_for_current_roles(); 3917 } 3918 #endif 3919 #endif 3920 break; 3921 3922 case HCI_EVENT_HARDWARE_ERROR: 3923 log_error("Hardware Error: 0x%02x", packet[2]); 3924 if (hci_stack->hardware_error_callback){ 3925 (*hci_stack->hardware_error_callback)(packet[2]); 3926 } else { 3927 // if no special requests, just reboot stack 3928 hci_power_control_off(); 3929 hci_power_control_on(); 3930 } 3931 break; 3932 3933 #ifdef ENABLE_CLASSIC 3934 case HCI_EVENT_ROLE_CHANGE: 3935 if (packet[2]) break; // status != 0 3936 reverse_bd_addr(&packet[3], addr); 3937 addr_type = BD_ADDR_TYPE_ACL; 3938 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3939 if (!conn) break; 3940 conn->role = packet[9]; 3941 break; 3942 #endif 3943 3944 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3945 // release packet buffer only for asynchronous transport and if there are not further fragments 3946 if (hci_transport_synchronous()) { 3947 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3948 return; // instead of break: to avoid re-entering hci_run() 3949 } 3950 hci_stack->acl_fragmentation_tx_active = 0; 3951 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3952 hci_stack->iso_fragmentation_tx_active = 0; 3953 if (hci_stack->iso_fragmentation_total_size) break; 3954 #endif 3955 if (hci_stack->acl_fragmentation_total_size) break; 3956 hci_release_packet_buffer(); 3957 3958 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3959 hci_iso_notify_can_send_now(); 3960 #endif 3961 // L2CAP receives this event via the hci_emit_event below 3962 3963 #ifdef ENABLE_CLASSIC 3964 // For SCO, we do the can_send_now_check here 3965 hci_notify_if_sco_can_send_now(); 3966 #endif 3967 break; 3968 3969 #ifdef ENABLE_CLASSIC 3970 case HCI_EVENT_SCO_CAN_SEND_NOW: 3971 // For SCO, we do the can_send_now_check here 3972 hci_stack->sco_can_send_now = true; 3973 hci_notify_if_sco_can_send_now(); 3974 return; 3975 3976 // explode inquriy results for easier consumption 3977 case HCI_EVENT_INQUIRY_RESULT: 3978 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3979 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3980 gap_inquiry_explode(packet, size); 3981 break; 3982 #endif 3983 3984 #ifdef ENABLE_BLE 3985 case HCI_EVENT_LE_META: 3986 switch (packet[2]){ 3987 #ifdef ENABLE_LE_CENTRAL 3988 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3989 if (!hci_stack->le_scanning_enabled) break; 3990 le_handle_advertisement_report(packet, size); 3991 break; 3992 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3993 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3994 if (!hci_stack->le_scanning_enabled) break; 3995 le_handle_extended_advertisement_report(packet, size); 3996 break; 3997 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 3998 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 3999 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4000 break; 4001 #endif 4002 #endif 4003 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4004 event_handle_le_connection_complete(packet); 4005 break; 4006 4007 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4008 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4009 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4010 conn = hci_connection_for_handle(handle); 4011 if (!conn) break; 4012 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4013 break; 4014 4015 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4016 // connection 4017 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4018 conn = hci_connection_for_handle(handle); 4019 if (conn) { 4020 // read arguments 4021 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4022 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4023 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4024 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4025 4026 // validate against current connection parameter range 4027 le_connection_parameter_range_t existing_range; 4028 gap_get_connection_parameter_range(&existing_range); 4029 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4030 if (update_parameter){ 4031 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4032 conn->le_conn_interval_min = le_conn_interval_min; 4033 conn->le_conn_interval_max = le_conn_interval_max; 4034 conn->le_conn_latency = le_conn_latency; 4035 conn->le_supervision_timeout = le_supervision_timeout; 4036 } else { 4037 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4038 } 4039 } 4040 break; 4041 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4042 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4043 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4044 conn = hci_connection_for_handle(handle); 4045 if (conn) { 4046 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4047 } 4048 break; 4049 #endif 4050 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4051 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4052 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4053 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4054 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4055 iso_stream = hci_iso_stream_for_con_handle(handle); 4056 btstack_assert(iso_stream != NULL); 4057 // track SDU 4058 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4059 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4060 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4061 // CIS Accept by Peripheral 4062 if (status == ERROR_CODE_SUCCESS){ 4063 if (iso_stream->max_sdu_p_to_c > 0){ 4064 // we're peripheral and we will send data 4065 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4066 } else { 4067 // we're peripheral and we will only receive data 4068 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4069 } 4070 } else { 4071 hci_iso_stream_finalize(iso_stream); 4072 hci_emit_cis_created(HCI_ISO_GROUP_ID_INVALID, handle, status); 4073 } 4074 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4075 } else { 4076 // CIG Setup by Central 4077 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4078 btstack_assert(cig != NULL); 4079 // update iso stream state 4080 if (status == ERROR_CODE_SUCCESS){ 4081 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4082 } else { 4083 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4084 } 4085 // update cig state 4086 uint8_t i; 4087 for (i=0;i<cig->num_cis;i++){ 4088 if (cig->cis_con_handles[i] == handle){ 4089 cig->cis_setup_active[i] = false; 4090 if (status == ERROR_CODE_SUCCESS){ 4091 cig->cis_established[i] = true; 4092 } else { 4093 hci_emit_cis_created(cig->cig_id, handle, status); 4094 } 4095 } 4096 } 4097 4098 // trigger iso path setup if complete 4099 bool cis_setup_active = false; 4100 for (i=0;i<cig->num_cis;i++){ 4101 cis_setup_active |= cig->cis_setup_active[i]; 4102 } 4103 if (cis_setup_active == false){ 4104 cig->state_vars.next_cis = 0; 4105 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4106 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4107 } 4108 } 4109 } 4110 break; 4111 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4112 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4113 big = hci_big_for_handle(packet[4]); 4114 if (big != NULL){ 4115 uint8_t status = packet[3]; 4116 if (status == ERROR_CODE_SUCCESS){ 4117 // store bis_con_handles and trigger iso path setup 4118 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4119 uint8_t i; 4120 for (i=0;i<num_bis;i++){ 4121 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4122 big->bis_con_handles[i] = bis_handle; 4123 // assign bis handle 4124 btstack_linked_list_iterator_t it; 4125 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4126 while (btstack_linked_list_iterator_has_next(&it)){ 4127 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4128 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4129 (iso_stream->group_id == big->big_handle)){ 4130 iso_stream->con_handle = bis_handle; 4131 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4132 break; 4133 } 4134 } 4135 } 4136 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4137 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4138 big->state_vars.next_bis = 0; 4139 } 4140 } else { 4141 // create BIG failed or has been stopped by us 4142 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4143 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4144 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4145 hci_emit_big_created(big, status); 4146 } else { 4147 hci_emit_big_terminated(big); 4148 } 4149 } 4150 } 4151 break; 4152 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4153 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4154 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4155 if (big != NULL){ 4156 // finalize associated ISO streams 4157 btstack_linked_list_iterator_t it; 4158 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4159 while (btstack_linked_list_iterator_has_next(&it)){ 4160 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4161 if (iso_stream->group_id == big->big_handle){ 4162 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->con_handle); 4163 btstack_linked_list_iterator_remove(&it); 4164 btstack_memory_hci_iso_stream_free(iso_stream); 4165 } 4166 } 4167 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4168 switch (big->state){ 4169 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4170 hci_emit_big_created(big, big->state_vars.status); 4171 break; 4172 default: 4173 hci_emit_big_terminated(big); 4174 break; 4175 } 4176 } 4177 break; 4178 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4179 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4180 big_sync = hci_big_sync_for_handle(packet[4]); 4181 if (big_sync != NULL){ 4182 uint8_t status = packet[3]; 4183 uint8_t big_handle = packet[4]; 4184 if (status == ERROR_CODE_SUCCESS){ 4185 // store bis_con_handles and trigger iso path setup 4186 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4187 uint8_t i; 4188 for (i=0;i<num_bis;i++){ 4189 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4190 } 4191 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4192 // trigger iso path setup 4193 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4194 big_sync->state_vars.next_bis = 0; 4195 } 4196 } else { 4197 // create BIG Sync failed or has been stopped by us 4198 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4199 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4200 hci_emit_big_sync_created(big_sync, status); 4201 } else { 4202 hci_emit_big_sync_stopped(big_handle); 4203 } 4204 } 4205 } 4206 break; 4207 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4208 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4209 big_sync = hci_big_sync_for_handle(packet[4]); 4210 if (big_sync != NULL){ 4211 uint8_t big_handle = packet[4]; 4212 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4213 hci_emit_big_sync_stopped(big_handle); 4214 } 4215 break; 4216 #endif 4217 default: 4218 break; 4219 } 4220 break; 4221 #endif 4222 case HCI_EVENT_VENDOR_SPECIFIC: 4223 // Vendor specific commands often create vendor specific event instead of num completed packets 4224 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4225 switch (hci_stack->manufacturer){ 4226 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4227 hci_stack->num_cmd_packets = 1; 4228 break; 4229 default: 4230 break; 4231 } 4232 break; 4233 default: 4234 break; 4235 } 4236 4237 handle_event_for_current_stack_state(packet, size); 4238 4239 // notify upper stack 4240 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4241 4242 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4243 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4244 handle = little_endian_read_16(packet, 3); 4245 hci_connection_t * aConn = hci_connection_for_handle(handle); 4246 // discard connection if app did not trigger a reconnect in the event handler 4247 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4248 hci_shutdown_connection(aConn); 4249 } 4250 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4251 hci_controller_dump_packets(); 4252 #endif 4253 } 4254 4255 // execute main loop 4256 hci_run(); 4257 } 4258 4259 #ifdef ENABLE_CLASSIC 4260 4261 #ifdef ENABLE_SCO_OVER_HCI 4262 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4263 static void sco_schedule_tx(hci_connection_t * conn); 4264 4265 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4266 log_debug("SCO TX Timeout"); 4267 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4268 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4269 if (!conn) return; 4270 4271 // trigger send 4272 conn->sco_tx_ready = 1; 4273 // extra packet if CVSD but SCO buffer is too short 4274 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4275 conn->sco_tx_ready++; 4276 } 4277 hci_notify_if_sco_can_send_now(); 4278 } 4279 4280 4281 #define SCO_TX_AFTER_RX_MS (6) 4282 4283 static void sco_schedule_tx(hci_connection_t * conn){ 4284 4285 uint32_t now = btstack_run_loop_get_time_ms(); 4286 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4287 int time_delta_ms = sco_tx_ms - now; 4288 4289 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4290 4291 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4292 btstack_run_loop_remove_timer(timer); 4293 btstack_run_loop_set_timer(timer, time_delta_ms); 4294 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4295 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4296 btstack_run_loop_add_timer(timer); 4297 } 4298 #endif 4299 4300 static void sco_handler(uint8_t * packet, uint16_t size){ 4301 // lookup connection struct 4302 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4303 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4304 if (!conn) return; 4305 4306 #ifdef ENABLE_SCO_OVER_HCI 4307 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4308 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4309 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4310 packet[2] = 0x3c; 4311 memmove(&packet[3], &packet[23], 63); 4312 size = 63; 4313 } 4314 } 4315 4316 if (hci_have_usb_transport()){ 4317 // Nothing to do 4318 } else { 4319 // 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); 4320 if (hci_stack->synchronous_flow_control_enabled == 0){ 4321 uint32_t now = btstack_run_loop_get_time_ms(); 4322 4323 if (!conn->sco_rx_valid){ 4324 // ignore first 10 packets 4325 conn->sco_rx_count++; 4326 // log_debug("sco rx count %u", conn->sco_rx_count); 4327 if (conn->sco_rx_count == 10) { 4328 // use first timestamp as is and pretent it just started 4329 conn->sco_rx_ms = now; 4330 conn->sco_rx_valid = 1; 4331 conn->sco_rx_count = 0; 4332 sco_schedule_tx(conn); 4333 } 4334 } else { 4335 // track expected arrival timme 4336 conn->sco_rx_count++; 4337 conn->sco_rx_ms += 7; 4338 int delta = (int32_t) (now - conn->sco_rx_ms); 4339 if (delta > 0){ 4340 conn->sco_rx_ms++; 4341 } 4342 // log_debug("sco rx %u", conn->sco_rx_ms); 4343 sco_schedule_tx(conn); 4344 } 4345 } 4346 } 4347 #endif 4348 4349 // deliver to app 4350 if (hci_stack->sco_packet_handler) { 4351 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4352 } 4353 4354 #ifdef HAVE_SCO_TRANSPORT 4355 // We can send one packet for each received packet 4356 conn->sco_tx_ready++; 4357 hci_notify_if_sco_can_send_now(); 4358 #endif 4359 4360 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4361 conn->num_packets_completed++; 4362 hci_stack->host_completed_packets = 1; 4363 hci_run(); 4364 #endif 4365 } 4366 #endif 4367 4368 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4369 hci_dump_packet(packet_type, 1, packet, size); 4370 switch (packet_type) { 4371 case HCI_EVENT_PACKET: 4372 event_handler(packet, size); 4373 break; 4374 case HCI_ACL_DATA_PACKET: 4375 acl_handler(packet, size); 4376 break; 4377 #ifdef ENABLE_CLASSIC 4378 case HCI_SCO_DATA_PACKET: 4379 sco_handler(packet, size); 4380 break; 4381 #endif 4382 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4383 case HCI_ISO_DATA_PACKET: 4384 hci_iso_packet_handler(packet, size); 4385 break; 4386 #endif 4387 default: 4388 break; 4389 } 4390 } 4391 4392 /** 4393 * @brief Add event packet handler. 4394 */ 4395 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4396 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4397 } 4398 4399 /** 4400 * @brief Remove event packet handler. 4401 */ 4402 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4403 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4404 } 4405 4406 /** Register HCI packet handlers */ 4407 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4408 hci_stack->acl_packet_handler = handler; 4409 } 4410 4411 #ifdef ENABLE_CLASSIC 4412 /** 4413 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4414 */ 4415 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4416 hci_stack->sco_packet_handler = handler; 4417 } 4418 #endif 4419 4420 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4421 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4422 hci_stack->iso_packet_handler = handler; 4423 } 4424 #endif 4425 4426 static void hci_state_reset(void){ 4427 // no connections yet 4428 hci_stack->connections = NULL; 4429 4430 // keep discoverable/connectable as this has been requested by the client(s) 4431 // hci_stack->discoverable = 0; 4432 // hci_stack->connectable = 0; 4433 // hci_stack->bondable = 1; 4434 // hci_stack->own_addr_type = 0; 4435 4436 // buffer is free 4437 hci_stack->hci_packet_buffer_reserved = false; 4438 4439 // no pending cmds 4440 hci_stack->decline_reason = 0; 4441 4442 hci_stack->secure_connections_active = false; 4443 4444 #ifdef ENABLE_CLASSIC 4445 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4446 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4447 4448 hci_stack->gap_tasks_classic = 4449 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4450 GAP_TASK_SET_CLASS_OF_DEVICE | 4451 GAP_TASK_SET_LOCAL_NAME | 4452 GAP_TASK_SET_EIR_DATA | 4453 GAP_TASK_WRITE_SCAN_ENABLE | 4454 GAP_TASK_WRITE_PAGE_TIMEOUT; 4455 #endif 4456 4457 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4458 hci_stack->classic_read_local_oob_data = false; 4459 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4460 #endif 4461 4462 // LE 4463 #ifdef ENABLE_BLE 4464 memset(hci_stack->le_random_address, 0, 6); 4465 hci_stack->le_random_address_set = 0; 4466 #endif 4467 #ifdef ENABLE_LE_CENTRAL 4468 hci_stack->le_scanning_active = false; 4469 hci_stack->le_scanning_param_update = true; 4470 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4471 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4472 hci_stack->le_whitelist_capacity = 0; 4473 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4474 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4475 #endif 4476 #endif 4477 #ifdef ENABLE_LE_PERIPHERAL 4478 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4479 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4480 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4481 } 4482 if (hci_stack->le_advertisements_data != NULL){ 4483 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4484 } 4485 #endif 4486 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4487 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4488 #endif 4489 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4490 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4491 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4492 #endif 4493 } 4494 4495 #ifdef ENABLE_CLASSIC 4496 /** 4497 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4498 */ 4499 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4500 // store and open remote device db 4501 hci_stack->link_key_db = link_key_db; 4502 if (hci_stack->link_key_db) { 4503 hci_stack->link_key_db->open(); 4504 } 4505 } 4506 #endif 4507 4508 void hci_init(const hci_transport_t *transport, const void *config){ 4509 4510 #ifdef HAVE_MALLOC 4511 if (!hci_stack) { 4512 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4513 } 4514 #else 4515 hci_stack = &hci_stack_static; 4516 #endif 4517 memset(hci_stack, 0, sizeof(hci_stack_t)); 4518 4519 // reference to use transport layer implementation 4520 hci_stack->hci_transport = transport; 4521 4522 // reference to used config 4523 hci_stack->config = config; 4524 4525 // setup pointer for outgoing packet buffer 4526 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4527 4528 // max acl payload size defined in config.h 4529 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4530 4531 // register packet handlers with transport 4532 transport->register_packet_handler(&packet_handler); 4533 4534 hci_stack->state = HCI_STATE_OFF; 4535 4536 // class of device 4537 hci_stack->class_of_device = 0x007a020c; // Smartphone 4538 4539 // bondable by default 4540 hci_stack->bondable = 1; 4541 4542 #ifdef ENABLE_CLASSIC 4543 // classic name 4544 hci_stack->local_name = default_classic_name; 4545 4546 // Master slave policy 4547 hci_stack->master_slave_policy = 1; 4548 4549 // Allow Role Switch 4550 hci_stack->allow_role_switch = 1; 4551 4552 // Default / minimum security level = 2 4553 hci_stack->gap_security_level = LEVEL_2; 4554 4555 // Default Security Mode 4 4556 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4557 4558 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4559 hci_stack->gap_required_encyrption_key_size = 7; 4560 4561 // Link Supervision Timeout 4562 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4563 4564 #endif 4565 4566 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4567 hci_stack->ssp_enable = 1; 4568 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4569 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4570 hci_stack->ssp_auto_accept = 1; 4571 4572 // Secure Connections: enable (requires support from Controller) 4573 hci_stack->secure_connections_enable = true; 4574 4575 // voice setting - signed 16 bit pcm data with CVSD over the air 4576 hci_stack->sco_voice_setting = 0x60; 4577 4578 #ifdef ENABLE_LE_CENTRAL 4579 // connection parameter to use for outgoing connections 4580 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4581 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4582 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4583 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4584 hci_stack->le_connection_latency = 4; // 4 4585 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4586 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4587 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4588 4589 // default LE Scanning 4590 hci_stack->le_scan_type = 0x1; // active 4591 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4592 hci_stack->le_scan_window = 0x30; // 30 ms 4593 #endif 4594 4595 #ifdef ENABLE_LE_PERIPHERAL 4596 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4597 4598 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4599 hci_stack->le_advertisements_interval_min = 0x0800; 4600 hci_stack->le_advertisements_interval_max = 0x0800; 4601 hci_stack->le_advertisements_type = 0; 4602 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4603 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4604 hci_stack->le_advertisements_channel_map = 0x07; 4605 hci_stack->le_advertisements_filter_policy = 0; 4606 #endif 4607 4608 // connection parameter range used to answer connection parameter update requests in l2cap 4609 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4610 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4611 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4612 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4613 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4614 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4615 4616 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4617 hci_stack->iso_packets_to_queue = 1; 4618 #endif 4619 4620 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4621 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4622 #endif 4623 4624 hci_state_reset(); 4625 } 4626 4627 void hci_deinit(void){ 4628 btstack_run_loop_remove_timer(&hci_stack->timeout); 4629 #ifdef HAVE_MALLOC 4630 if (hci_stack) { 4631 free(hci_stack); 4632 } 4633 #endif 4634 hci_stack = NULL; 4635 4636 #ifdef ENABLE_CLASSIC 4637 disable_l2cap_timeouts = 0; 4638 #endif 4639 } 4640 4641 /** 4642 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4643 */ 4644 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4645 hci_stack->chipset = chipset_driver; 4646 4647 // reset chipset driver - init is also called on power_up 4648 if (hci_stack->chipset && hci_stack->chipset->init){ 4649 hci_stack->chipset->init(hci_stack->config); 4650 } 4651 } 4652 4653 /** 4654 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4655 */ 4656 void hci_set_control(const btstack_control_t *hardware_control){ 4657 // references to used control implementation 4658 hci_stack->control = hardware_control; 4659 // init with transport config 4660 hardware_control->init(hci_stack->config); 4661 } 4662 4663 static void hci_discard_connections(void){ 4664 btstack_linked_list_iterator_t it; 4665 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4666 while (btstack_linked_list_iterator_has_next(&it)){ 4667 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4668 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4669 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4670 hci_shutdown_connection(connection); 4671 } 4672 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4673 while (hci_stack->iso_streams != NULL){ 4674 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4675 } 4676 #endif 4677 } 4678 4679 void hci_close(void){ 4680 4681 #ifdef ENABLE_CLASSIC 4682 // close remote device db 4683 if (hci_stack->link_key_db) { 4684 hci_stack->link_key_db->close(); 4685 } 4686 #endif 4687 4688 hci_discard_connections(); 4689 4690 hci_power_control(HCI_POWER_OFF); 4691 4692 #ifdef HAVE_MALLOC 4693 free(hci_stack); 4694 #endif 4695 hci_stack = NULL; 4696 } 4697 4698 #ifdef HAVE_SCO_TRANSPORT 4699 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4700 hci_stack->sco_transport = sco_transport; 4701 sco_transport->register_packet_handler(&packet_handler); 4702 } 4703 #endif 4704 4705 #ifdef ENABLE_CLASSIC 4706 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4707 // validate ranage and set 4708 if (encryption_key_size < 7) return; 4709 if (encryption_key_size > 16) return; 4710 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4711 } 4712 4713 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4714 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4715 hci_stack->gap_security_mode = security_mode; 4716 return ERROR_CODE_SUCCESS; 4717 } else { 4718 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4719 } 4720 } 4721 4722 gap_security_mode_t gap_get_security_mode(void){ 4723 return hci_stack->gap_security_mode; 4724 } 4725 4726 void gap_set_security_level(gap_security_level_t security_level){ 4727 hci_stack->gap_security_level = security_level; 4728 } 4729 4730 gap_security_level_t gap_get_security_level(void){ 4731 if (hci_stack->gap_secure_connections_only_mode){ 4732 return LEVEL_4; 4733 } 4734 return hci_stack->gap_security_level; 4735 } 4736 4737 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4738 hci_stack->gap_minimal_service_security_level = security_level; 4739 } 4740 4741 void gap_set_secure_connections_only_mode(bool enable){ 4742 hci_stack->gap_secure_connections_only_mode = enable; 4743 } 4744 4745 bool gap_get_secure_connections_only_mode(void){ 4746 return hci_stack->gap_secure_connections_only_mode; 4747 } 4748 #endif 4749 4750 #ifdef ENABLE_CLASSIC 4751 void gap_set_class_of_device(uint32_t class_of_device){ 4752 hci_stack->class_of_device = class_of_device; 4753 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4754 hci_run(); 4755 } 4756 4757 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4758 hci_stack->default_link_policy_settings = default_link_policy_settings; 4759 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4760 hci_run(); 4761 } 4762 4763 void gap_set_allow_role_switch(bool allow_role_switch){ 4764 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4765 } 4766 4767 uint8_t hci_get_allow_role_switch(void){ 4768 return hci_stack->allow_role_switch; 4769 } 4770 4771 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4772 hci_stack->link_supervision_timeout = link_supervision_timeout; 4773 } 4774 4775 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4776 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4777 } 4778 4779 uint16_t hci_automatic_flush_timeout(void){ 4780 return hci_stack->automatic_flush_timeout; 4781 } 4782 4783 void hci_disable_l2cap_timeout_check(void){ 4784 disable_l2cap_timeouts = 1; 4785 } 4786 #endif 4787 4788 #ifndef HAVE_HOST_CONTROLLER_API 4789 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4790 void hci_set_bd_addr(bd_addr_t addr){ 4791 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4792 hci_stack->custom_bd_addr_set = 1; 4793 } 4794 #endif 4795 4796 // State-Module-Driver overview 4797 // state module low-level 4798 // HCI_STATE_OFF off close 4799 // HCI_STATE_INITIALIZING, on open 4800 // HCI_STATE_WORKING, on open 4801 // HCI_STATE_HALTING, on open 4802 // HCI_STATE_SLEEPING, off/sleep close 4803 // HCI_STATE_FALLING_ASLEEP on open 4804 4805 static int hci_power_control_on(void){ 4806 4807 // power on 4808 int err = 0; 4809 if (hci_stack->control && hci_stack->control->on){ 4810 err = (*hci_stack->control->on)(); 4811 } 4812 if (err){ 4813 log_error( "POWER_ON failed"); 4814 hci_emit_hci_open_failed(); 4815 return err; 4816 } 4817 4818 // int chipset driver 4819 if (hci_stack->chipset && hci_stack->chipset->init){ 4820 hci_stack->chipset->init(hci_stack->config); 4821 } 4822 4823 // init transport 4824 if (hci_stack->hci_transport->init){ 4825 hci_stack->hci_transport->init(hci_stack->config); 4826 } 4827 4828 // open transport 4829 err = hci_stack->hci_transport->open(); 4830 if (err){ 4831 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4832 if (hci_stack->control && hci_stack->control->off){ 4833 (*hci_stack->control->off)(); 4834 } 4835 hci_emit_hci_open_failed(); 4836 return err; 4837 } 4838 return 0; 4839 } 4840 4841 static void hci_power_control_off(void){ 4842 4843 log_info("hci_power_control_off"); 4844 4845 // close low-level device 4846 hci_stack->hci_transport->close(); 4847 4848 log_info("hci_power_control_off - hci_transport closed"); 4849 4850 // power off 4851 if (hci_stack->control && hci_stack->control->off){ 4852 (*hci_stack->control->off)(); 4853 } 4854 4855 log_info("hci_power_control_off - control closed"); 4856 4857 hci_stack->state = HCI_STATE_OFF; 4858 } 4859 4860 static void hci_power_control_sleep(void){ 4861 4862 log_info("hci_power_control_sleep"); 4863 4864 #if 0 4865 // don't close serial port during sleep 4866 4867 // close low-level device 4868 hci_stack->hci_transport->close(hci_stack->config); 4869 #endif 4870 4871 // sleep mode 4872 if (hci_stack->control && hci_stack->control->sleep){ 4873 (*hci_stack->control->sleep)(); 4874 } 4875 4876 hci_stack->state = HCI_STATE_SLEEPING; 4877 } 4878 4879 static int hci_power_control_wake(void){ 4880 4881 log_info("hci_power_control_wake"); 4882 4883 // wake on 4884 if (hci_stack->control && hci_stack->control->wake){ 4885 (*hci_stack->control->wake)(); 4886 } 4887 4888 #if 0 4889 // open low-level device 4890 int err = hci_stack->hci_transport->open(hci_stack->config); 4891 if (err){ 4892 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4893 if (hci_stack->control && hci_stack->control->off){ 4894 (*hci_stack->control->off)(); 4895 } 4896 hci_emit_hci_open_failed(); 4897 return err; 4898 } 4899 #endif 4900 4901 return 0; 4902 } 4903 4904 static void hci_power_enter_initializing_state(void){ 4905 // set up state machine 4906 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4907 hci_stack->hci_packet_buffer_reserved = false; 4908 hci_stack->state = HCI_STATE_INITIALIZING; 4909 hci_stack->substate = HCI_INIT_SEND_RESET; 4910 } 4911 4912 static void hci_power_enter_halting_state(void){ 4913 #ifdef ENABLE_BLE 4914 // drop entries scheduled for removal, mark others for re-adding 4915 btstack_linked_list_iterator_t it; 4916 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 4917 while (btstack_linked_list_iterator_has_next(&it)){ 4918 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 4919 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 4920 btstack_linked_list_iterator_remove(&it); 4921 btstack_memory_whitelist_entry_free(entry); 4922 } else { 4923 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 4924 } 4925 } 4926 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4927 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 4928 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 4929 while (btstack_linked_list_iterator_has_next(&it)){ 4930 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 4931 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 4932 btstack_linked_list_iterator_remove(&it); 4933 btstack_memory_periodic_advertiser_list_entry_free(entry); 4934 } else { 4935 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 4936 continue; 4937 } 4938 } 4939 #endif 4940 #endif 4941 // see hci_run 4942 hci_stack->state = HCI_STATE_HALTING; 4943 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4944 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4945 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4946 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4947 btstack_run_loop_add_timer(&hci_stack->timeout); 4948 } 4949 4950 // returns error 4951 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4952 int err; 4953 switch (power_mode){ 4954 case HCI_POWER_ON: 4955 err = hci_power_control_on(); 4956 if (err != 0) { 4957 log_error("hci_power_control_on() error %d", err); 4958 return err; 4959 } 4960 hci_power_enter_initializing_state(); 4961 break; 4962 case HCI_POWER_OFF: 4963 // do nothing 4964 break; 4965 case HCI_POWER_SLEEP: 4966 // do nothing (with SLEEP == OFF) 4967 break; 4968 default: 4969 btstack_assert(false); 4970 break; 4971 } 4972 return ERROR_CODE_SUCCESS; 4973 } 4974 4975 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4976 switch (power_mode){ 4977 case HCI_POWER_ON: 4978 // do nothing 4979 break; 4980 case HCI_POWER_OFF: 4981 // no connections yet, just turn it off 4982 hci_power_control_off(); 4983 break; 4984 case HCI_POWER_SLEEP: 4985 // no connections yet, just turn it off 4986 hci_power_control_sleep(); 4987 break; 4988 default: 4989 btstack_assert(false); 4990 break; 4991 } 4992 return ERROR_CODE_SUCCESS; 4993 } 4994 4995 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4996 switch (power_mode){ 4997 case HCI_POWER_ON: 4998 // do nothing 4999 break; 5000 case HCI_POWER_OFF: 5001 hci_power_enter_halting_state(); 5002 break; 5003 case HCI_POWER_SLEEP: 5004 // see hci_run 5005 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5006 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5007 break; 5008 default: 5009 btstack_assert(false); 5010 break; 5011 } 5012 return ERROR_CODE_SUCCESS; 5013 } 5014 5015 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5016 switch (power_mode){ 5017 case HCI_POWER_ON: 5018 hci_power_enter_initializing_state(); 5019 break; 5020 case HCI_POWER_OFF: 5021 // do nothing 5022 break; 5023 case HCI_POWER_SLEEP: 5024 // see hci_run 5025 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5026 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5027 break; 5028 default: 5029 btstack_assert(false); 5030 break; 5031 } 5032 return ERROR_CODE_SUCCESS; 5033 } 5034 5035 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5036 switch (power_mode){ 5037 case HCI_POWER_ON: 5038 hci_power_enter_initializing_state(); 5039 break; 5040 case HCI_POWER_OFF: 5041 hci_power_enter_halting_state(); 5042 break; 5043 case HCI_POWER_SLEEP: 5044 // do nothing 5045 break; 5046 default: 5047 btstack_assert(false); 5048 break; 5049 } 5050 return ERROR_CODE_SUCCESS; 5051 } 5052 5053 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5054 int err; 5055 switch (power_mode){ 5056 case HCI_POWER_ON: 5057 err = hci_power_control_wake(); 5058 if (err) return err; 5059 hci_power_enter_initializing_state(); 5060 break; 5061 case HCI_POWER_OFF: 5062 hci_power_enter_halting_state(); 5063 break; 5064 case HCI_POWER_SLEEP: 5065 // do nothing 5066 break; 5067 default: 5068 btstack_assert(false); 5069 break; 5070 } 5071 return ERROR_CODE_SUCCESS; 5072 } 5073 5074 int hci_power_control(HCI_POWER_MODE power_mode){ 5075 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5076 btstack_run_loop_remove_timer(&hci_stack->timeout); 5077 int err = 0; 5078 switch (hci_stack->state){ 5079 case HCI_STATE_OFF: 5080 err = hci_power_control_state_off(power_mode); 5081 break; 5082 case HCI_STATE_INITIALIZING: 5083 err = hci_power_control_state_initializing(power_mode); 5084 break; 5085 case HCI_STATE_WORKING: 5086 err = hci_power_control_state_working(power_mode); 5087 break; 5088 case HCI_STATE_HALTING: 5089 err = hci_power_control_state_halting(power_mode); 5090 break; 5091 case HCI_STATE_FALLING_ASLEEP: 5092 err = hci_power_control_state_falling_asleep(power_mode); 5093 break; 5094 case HCI_STATE_SLEEPING: 5095 err = hci_power_control_state_sleeping(power_mode); 5096 break; 5097 default: 5098 btstack_assert(false); 5099 break; 5100 } 5101 if (err != 0){ 5102 return err; 5103 } 5104 5105 // create internal event 5106 hci_emit_state(); 5107 5108 // trigger next/first action 5109 hci_run(); 5110 5111 return 0; 5112 } 5113 5114 5115 static void hci_halting_run(void) { 5116 5117 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5118 5119 hci_connection_t *connection; 5120 #ifdef ENABLE_BLE 5121 #ifdef ENABLE_LE_PERIPHERAL 5122 bool stop_advertismenets; 5123 #endif 5124 #endif 5125 5126 switch (hci_stack->substate) { 5127 case HCI_HALTING_CLASSIC_STOP: 5128 #ifdef ENABLE_CLASSIC 5129 if (!hci_can_send_command_packet_now()) return; 5130 5131 if (hci_stack->connectable || hci_stack->discoverable){ 5132 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5133 hci_send_cmd(&hci_write_scan_enable, 0); 5134 return; 5135 } 5136 #endif 5137 /* fall through */ 5138 5139 case HCI_HALTING_LE_ADV_STOP: 5140 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5141 5142 #ifdef ENABLE_BLE 5143 #ifdef ENABLE_LE_PERIPHERAL 5144 if (!hci_can_send_command_packet_now()) return; 5145 5146 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5147 5148 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5149 if (hci_extended_advertising_supported()){ 5150 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5151 btstack_linked_list_iterator_t it; 5152 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5153 // stop all periodic advertisements and check if an extended set is active 5154 while (btstack_linked_list_iterator_has_next(&it)){ 5155 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5156 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5157 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5158 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5159 return; 5160 } 5161 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5162 stop_advertismenets = true; 5163 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5164 } 5165 } 5166 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5167 if (stop_advertismenets){ 5168 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5169 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5170 return; 5171 } 5172 } 5173 else 5174 #else /* ENABLE_LE_PERIPHERAL */ 5175 { 5176 if (stop_advertismenets) { 5177 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5178 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5179 return; 5180 } 5181 } 5182 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5183 #endif /* ENABLE_LE_PERIPHERAL */ 5184 #endif /* ENABLE_BLE */ 5185 5186 /* fall through */ 5187 5188 case HCI_HALTING_LE_SCAN_STOP: 5189 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5190 if (!hci_can_send_command_packet_now()) return; 5191 5192 #ifdef ENABLE_BLE 5193 #ifdef ENABLE_LE_CENTRAL 5194 if (hci_stack->le_scanning_active){ 5195 hci_le_scan_stop(); 5196 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5197 return; 5198 } 5199 #endif 5200 #endif 5201 5202 /* fall through */ 5203 5204 case HCI_HALTING_DISCONNECT_ALL: 5205 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5206 if (!hci_can_send_command_packet_now()) return; 5207 5208 // close all open connections 5209 connection = (hci_connection_t *) hci_stack->connections; 5210 if (connection) { 5211 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5212 5213 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5214 5215 // check state 5216 switch(connection->state) { 5217 case SENT_DISCONNECT: 5218 case RECEIVED_DISCONNECTION_COMPLETE: 5219 // wait until connection is gone 5220 return; 5221 default: 5222 break; 5223 } 5224 5225 // finally, send the disconnect command 5226 connection->state = SENT_DISCONNECT; 5227 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5228 return; 5229 } 5230 5231 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5232 // stop BIGs and BIG Syncs 5233 if (hci_stack->le_audio_bigs != NULL){ 5234 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5235 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5236 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5237 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5238 return; 5239 } 5240 if (hci_stack->le_audio_big_syncs != NULL){ 5241 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5242 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5243 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5244 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5245 return; 5246 } 5247 #endif 5248 5249 btstack_run_loop_remove_timer(&hci_stack->timeout); 5250 5251 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5252 log_info("HCI_STATE_HALTING: wait 50 ms"); 5253 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5254 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5255 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5256 btstack_run_loop_add_timer(&hci_stack->timeout); 5257 break; 5258 5259 case HCI_HALTING_W4_CLOSE_TIMER: 5260 // keep waiting 5261 break; 5262 5263 case HCI_HALTING_CLOSE: 5264 // close left over connections (that had not been properly closed before) 5265 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5266 hci_discard_connections(); 5267 5268 log_info("HCI_STATE_HALTING, calling off"); 5269 5270 // switch mode 5271 hci_power_control_off(); 5272 5273 log_info("HCI_STATE_HALTING, emitting state"); 5274 hci_emit_state(); 5275 log_info("HCI_STATE_HALTING, done"); 5276 break; 5277 5278 default: 5279 break; 5280 } 5281 }; 5282 5283 static void hci_falling_asleep_run(void){ 5284 hci_connection_t * connection; 5285 switch(hci_stack->substate) { 5286 case HCI_FALLING_ASLEEP_DISCONNECT: 5287 log_info("HCI_STATE_FALLING_ASLEEP"); 5288 // close all open connections 5289 connection = (hci_connection_t *) hci_stack->connections; 5290 if (connection){ 5291 5292 // send disconnect 5293 if (!hci_can_send_command_packet_now()) return; 5294 5295 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5296 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5297 5298 // send disconnected event right away - causes higher layer connections to get closed, too. 5299 hci_shutdown_connection(connection); 5300 return; 5301 } 5302 5303 if (hci_classic_supported()){ 5304 // disable page and inquiry scan 5305 if (!hci_can_send_command_packet_now()) return; 5306 5307 log_info("HCI_STATE_HALTING, disabling inq scans"); 5308 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5309 5310 // continue in next sub state 5311 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5312 break; 5313 } 5314 5315 /* fall through */ 5316 5317 case HCI_FALLING_ASLEEP_COMPLETE: 5318 log_info("HCI_STATE_HALTING, calling sleep"); 5319 // switch mode 5320 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5321 hci_emit_state(); 5322 break; 5323 5324 default: 5325 break; 5326 } 5327 } 5328 5329 #ifdef ENABLE_CLASSIC 5330 5331 static void hci_update_scan_enable(void){ 5332 // 2 = page scan, 1 = inq scan 5333 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5334 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5335 hci_run(); 5336 } 5337 5338 void gap_discoverable_control(uint8_t enable){ 5339 if (enable) enable = 1; // normalize argument 5340 5341 if (hci_stack->discoverable == enable){ 5342 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5343 return; 5344 } 5345 5346 hci_stack->discoverable = enable; 5347 hci_update_scan_enable(); 5348 } 5349 5350 void gap_connectable_control(uint8_t enable){ 5351 if (enable) enable = 1; // normalize argument 5352 5353 // don't emit event 5354 if (hci_stack->connectable == enable) return; 5355 5356 hci_stack->connectable = enable; 5357 hci_update_scan_enable(); 5358 } 5359 #endif 5360 5361 void gap_local_bd_addr(bd_addr_t address_buffer){ 5362 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5363 } 5364 5365 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5366 static void hci_host_num_completed_packets(void){ 5367 5368 // create packet manually as arrays are not supported and num_commands should not get reduced 5369 hci_reserve_packet_buffer(); 5370 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5371 5372 uint16_t size = 0; 5373 uint16_t num_handles = 0; 5374 packet[size++] = 0x35; 5375 packet[size++] = 0x0c; 5376 size++; // skip param len 5377 size++; // skip num handles 5378 5379 // add { handle, packets } entries 5380 btstack_linked_item_t * it; 5381 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5382 hci_connection_t * connection = (hci_connection_t *) it; 5383 if (connection->num_packets_completed){ 5384 little_endian_store_16(packet, size, connection->con_handle); 5385 size += 2; 5386 little_endian_store_16(packet, size, connection->num_packets_completed); 5387 size += 2; 5388 // 5389 num_handles++; 5390 connection->num_packets_completed = 0; 5391 } 5392 } 5393 5394 packet[2] = size - 3; 5395 packet[3] = num_handles; 5396 5397 hci_stack->host_completed_packets = 0; 5398 5399 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5400 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5401 5402 // release packet buffer for synchronous transport implementations 5403 if (hci_transport_synchronous()){ 5404 hci_release_packet_buffer(); 5405 hci_emit_transport_packet_sent(); 5406 } 5407 } 5408 #endif 5409 5410 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5411 UNUSED(ds); 5412 hci_stack->substate = HCI_HALTING_CLOSE; 5413 hci_halting_run(); 5414 } 5415 5416 static bool hci_run_acl_fragments(void){ 5417 if (hci_stack->acl_fragmentation_total_size > 0u) { 5418 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5419 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5420 if (connection) { 5421 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5422 hci_send_acl_packet_fragments(connection); 5423 return true; 5424 } 5425 } else { 5426 // connection gone -> discard further fragments 5427 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5428 hci_stack->acl_fragmentation_total_size = 0; 5429 hci_stack->acl_fragmentation_pos = 0; 5430 } 5431 } 5432 return false; 5433 } 5434 5435 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5436 static bool hci_run_iso_fragments(void){ 5437 if (hci_stack->iso_fragmentation_total_size > 0u) { 5438 // TODO: flow control 5439 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5440 hci_send_iso_packet_fragments(); 5441 return true; 5442 } 5443 } 5444 return false; 5445 } 5446 #endif 5447 5448 #ifdef ENABLE_CLASSIC 5449 5450 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5451 static bool hci_classic_operation_active(void) { 5452 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5453 return true; 5454 } 5455 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5456 return true; 5457 } 5458 btstack_linked_item_t * it; 5459 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5460 hci_connection_t *connection = (hci_connection_t *) it; 5461 switch (connection->state) { 5462 case SENT_CREATE_CONNECTION: 5463 case SENT_CANCEL_CONNECTION: 5464 case SENT_DISCONNECT: 5465 return true; 5466 default: 5467 break; 5468 } 5469 } 5470 return false; 5471 } 5472 #endif 5473 5474 static bool hci_run_general_gap_classic(void){ 5475 5476 // assert stack is working and classic is active 5477 if (hci_classic_supported() == false) return false; 5478 if (hci_stack->state != HCI_STATE_WORKING) return false; 5479 5480 // decline incoming connections 5481 if (hci_stack->decline_reason){ 5482 uint8_t reason = hci_stack->decline_reason; 5483 hci_stack->decline_reason = 0; 5484 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5485 return true; 5486 } 5487 5488 if (hci_stack->gap_tasks_classic != 0){ 5489 hci_run_gap_tasks_classic(); 5490 return true; 5491 } 5492 5493 // start/stop inquiry 5494 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5495 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5496 if (hci_classic_operation_active() == false) 5497 #endif 5498 { 5499 uint8_t duration = hci_stack->inquiry_state; 5500 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5501 if (hci_stack->inquiry_max_period_length != 0){ 5502 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); 5503 } else { 5504 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5505 } 5506 return true; 5507 } 5508 } 5509 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5510 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5511 hci_send_cmd(&hci_inquiry_cancel); 5512 return true; 5513 } 5514 5515 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5516 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5517 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5518 return true; 5519 } 5520 5521 // remote name request 5522 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5523 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5524 if (hci_classic_operation_active() == false) 5525 #endif 5526 { 5527 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5528 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5529 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5530 return true; 5531 } 5532 } 5533 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5534 // Local OOB data 5535 if (hci_stack->classic_read_local_oob_data){ 5536 hci_stack->classic_read_local_oob_data = false; 5537 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5538 hci_send_cmd(&hci_read_local_extended_oob_data); 5539 } else { 5540 hci_send_cmd(&hci_read_local_oob_data); 5541 } 5542 } 5543 #endif 5544 // pairing 5545 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5546 uint8_t state = hci_stack->gap_pairing_state; 5547 uint8_t pin_code[16]; 5548 switch (state){ 5549 case GAP_PAIRING_STATE_SEND_PIN: 5550 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5551 memset(pin_code, 0, 16); 5552 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5553 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5554 break; 5555 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5556 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5557 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5558 break; 5559 case GAP_PAIRING_STATE_SEND_PASSKEY: 5560 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5561 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5562 break; 5563 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5564 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5565 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5566 break; 5567 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5568 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5569 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5570 break; 5571 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5572 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5573 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5574 break; 5575 default: 5576 break; 5577 } 5578 return true; 5579 } 5580 return false; 5581 } 5582 #endif 5583 5584 #ifdef ENABLE_BLE 5585 5586 #ifdef ENABLE_LE_CENTRAL 5587 static void hci_le_scan_stop(void){ 5588 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5589 if (hci_extended_advertising_supported()) { 5590 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5591 } else 5592 #endif 5593 { 5594 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5595 } 5596 } 5597 5598 static void 5599 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5600 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5601 if (hci_extended_advertising_supported()) { 5602 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 5603 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 5604 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 5605 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 5606 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 5607 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 5608 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 5609 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 5610 hci_send_cmd(&hci_le_extended_create_connection, 5611 initiator_filter_policy, 5612 hci_stack->le_connection_own_addr_type, // our addr type: 5613 address_type, // peer address type 5614 address, // peer bd addr 5615 1, // initiating PHY - 1M 5616 le_connection_scan_interval, // conn scan interval 5617 le_connection_scan_window, // conn scan windows 5618 le_connection_interval_min, // conn interval min 5619 le_connection_interval_max, // conn interval max 5620 le_connection_latency, // conn latency 5621 le_supervision_timeout, // conn latency 5622 le_minimum_ce_length, // min ce length 5623 le_maximum_ce_length // max ce length 5624 ); 5625 } 5626 else 5627 #endif 5628 { 5629 hci_send_cmd(&hci_le_create_connection, 5630 hci_stack->le_connection_scan_interval, // conn scan interval 5631 hci_stack->le_connection_scan_window, // conn scan windows 5632 initiator_filter_policy, // don't use whitelist 5633 address_type, // peer address type 5634 address, // peer bd addr 5635 hci_stack->le_connection_own_addr_type, // our addr type: 5636 hci_stack->le_connection_interval_min, // conn interval min 5637 hci_stack->le_connection_interval_max, // conn interval max 5638 hci_stack->le_connection_latency, // conn latency 5639 hci_stack->le_supervision_timeout, // conn latency 5640 hci_stack->le_minimum_ce_length, // min ce length 5641 hci_stack->le_maximum_ce_length // max ce length 5642 ); 5643 } 5644 } 5645 #endif 5646 5647 #ifdef ENABLE_LE_PERIPHERAL 5648 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5649 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5650 uint8_t operation = 0; 5651 if (pos == 0){ 5652 // first fragment or complete data 5653 operation |= 1; 5654 } 5655 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5656 // last fragment or complete data 5657 operation |= 2; 5658 } 5659 return operation; 5660 } 5661 #endif 5662 #endif 5663 5664 static bool hci_run_general_gap_le(void){ 5665 5666 btstack_linked_list_iterator_t lit; 5667 5668 // Phase 1: collect what to stop 5669 5670 #ifdef ENABLE_LE_CENTRAL 5671 bool scanning_stop = false; 5672 bool connecting_stop = false; 5673 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5674 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5675 bool periodic_sync_stop = false; 5676 #endif 5677 #endif 5678 #endif 5679 5680 #ifdef ENABLE_LE_PERIPHERAL 5681 bool advertising_stop = false; 5682 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5683 le_advertising_set_t * advertising_stop_set = NULL; 5684 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5685 bool periodic_advertising_stop = false; 5686 #endif 5687 #endif 5688 #endif 5689 5690 // check if own address changes 5691 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5692 5693 // check if whitelist needs modification 5694 bool whitelist_modification_pending = false; 5695 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5696 while (btstack_linked_list_iterator_has_next(&lit)){ 5697 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5698 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5699 whitelist_modification_pending = true; 5700 break; 5701 } 5702 } 5703 5704 // check if resolving list needs modification 5705 bool resolving_list_modification_pending = false; 5706 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5707 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5708 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5709 resolving_list_modification_pending = true; 5710 } 5711 #endif 5712 5713 #ifdef ENABLE_LE_CENTRAL 5714 5715 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5716 // check if periodic advertiser list needs modification 5717 bool periodic_list_modification_pending = false; 5718 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5719 while (btstack_linked_list_iterator_has_next(&lit)){ 5720 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5721 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5722 periodic_list_modification_pending = true; 5723 break; 5724 } 5725 } 5726 #endif 5727 5728 // scanning control 5729 if (hci_stack->le_scanning_active) { 5730 // stop if: 5731 // - parameter change required 5732 // - it's disabled 5733 // - whitelist change required but used for scanning 5734 // - resolving list modified 5735 // - own address changes 5736 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5737 if ((hci_stack->le_scanning_param_update) || 5738 !hci_stack->le_scanning_enabled || 5739 (scanning_uses_whitelist && whitelist_modification_pending) || 5740 resolving_list_modification_pending || 5741 random_address_change){ 5742 5743 scanning_stop = true; 5744 } 5745 } 5746 5747 // connecting control 5748 bool connecting_with_whitelist; 5749 switch (hci_stack->le_connecting_state){ 5750 case LE_CONNECTING_DIRECT: 5751 case LE_CONNECTING_WHITELIST: 5752 // stop connecting if: 5753 // - connecting uses white and whitelist modification pending 5754 // - if it got disabled 5755 // - resolving list modified 5756 // - own address changes 5757 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5758 if ((connecting_with_whitelist && whitelist_modification_pending) || 5759 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5760 resolving_list_modification_pending || 5761 random_address_change) { 5762 5763 connecting_stop = true; 5764 } 5765 break; 5766 default: 5767 break; 5768 } 5769 5770 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5771 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5772 // periodic sync control 5773 bool sync_with_advertiser_list; 5774 switch(hci_stack->le_periodic_sync_state){ 5775 case LE_CONNECTING_DIRECT: 5776 case LE_CONNECTING_WHITELIST: 5777 // stop sync if: 5778 // - sync with advertiser list and advertiser list modification pending 5779 // - if it got disabled 5780 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5781 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5782 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5783 periodic_sync_stop = true; 5784 } 5785 break; 5786 default: 5787 break; 5788 } 5789 #endif 5790 #endif 5791 5792 #endif /* ENABLE_LE_CENTRAL */ 5793 5794 #ifdef ENABLE_LE_PERIPHERAL 5795 // le advertisement control 5796 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5797 // stop if: 5798 // - parameter change required 5799 // - random address used in advertising and changes 5800 // - it's disabled 5801 // - whitelist change required but used for advertisement filter policy 5802 // - resolving list modified 5803 // - own address changes 5804 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5805 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5806 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5807 if (advertising_change || 5808 (advertising_uses_random_address && random_address_change) || 5809 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5810 (advertising_uses_whitelist && whitelist_modification_pending) || 5811 resolving_list_modification_pending || 5812 random_address_change) { 5813 5814 advertising_stop = true; 5815 } 5816 } 5817 5818 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5819 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5820 btstack_linked_list_iterator_t it; 5821 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5822 while (btstack_linked_list_iterator_has_next(&it)){ 5823 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5824 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5825 // stop if: 5826 // - parameter change required 5827 // - random address used in connectable advertising and changes 5828 // - it's disabled 5829 // - whitelist change required but used for advertisement filter policy 5830 // - resolving list modified 5831 // - own address changes 5832 // - advertisement set will be removed 5833 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5834 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5835 bool advertising_uses_random_address = 5836 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5837 advertising_connectable; 5838 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5839 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5840 bool advertising_set_random_address_change = 5841 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5842 bool advertising_set_will_be_removed = 5843 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5844 if (advertising_parameter_change || 5845 (advertising_uses_random_address && advertising_set_random_address_change) || 5846 (advertising_enabled == false) || 5847 (advertising_uses_whitelist && whitelist_modification_pending) || 5848 resolving_list_modification_pending || 5849 advertising_set_will_be_removed) { 5850 5851 advertising_stop = true; 5852 advertising_stop_set = advertising_set; 5853 break; 5854 } 5855 } 5856 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5857 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5858 // stop if: 5859 // - it's disabled 5860 // - parameter change required 5861 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5862 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5863 if ((periodic_enabled == false) || periodic_parameter_change){ 5864 periodic_advertising_stop = true; 5865 advertising_stop_set = advertising_set; 5866 } 5867 } 5868 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5869 } 5870 } 5871 #endif 5872 5873 #endif 5874 5875 5876 // Phase 2: stop everything that should be off during modifications 5877 5878 5879 // 2.1 Outgoing connection 5880 #ifdef ENABLE_LE_CENTRAL 5881 if (connecting_stop){ 5882 hci_send_cmd(&hci_le_create_connection_cancel); 5883 return true; 5884 } 5885 #endif 5886 5887 // 2.2 Scanning 5888 #ifdef ENABLE_LE_CENTRAL 5889 if (scanning_stop){ 5890 hci_stack->le_scanning_active = false; 5891 hci_le_scan_stop(); 5892 return true; 5893 } 5894 5895 // 2.3 Periodic Sync 5896 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5897 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5898 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5899 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5900 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5901 return true; 5902 } 5903 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5904 if (periodic_sync_stop){ 5905 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5906 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5907 return true; 5908 } 5909 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5910 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5911 #endif /* ENABLE_LE_CENTRAL */ 5912 5913 // 2.4 Advertising: legacy, extended, periodic 5914 #ifdef ENABLE_LE_PERIPHERAL 5915 if (advertising_stop){ 5916 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5917 if (hci_extended_advertising_supported()) { 5918 uint8_t advertising_stop_handle; 5919 if (advertising_stop_set != NULL){ 5920 advertising_stop_handle = advertising_stop_set->advertising_handle; 5921 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5922 } else { 5923 advertising_stop_handle = 0; 5924 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5925 } 5926 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5927 const uint16_t durations[] = { 0 }; 5928 const uint16_t max_events[] = { 0 }; 5929 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5930 } else 5931 #endif 5932 { 5933 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5934 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5935 } 5936 return true; 5937 } 5938 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5939 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5940 if (periodic_advertising_stop){ 5941 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5942 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5943 return true; 5944 } 5945 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5946 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5947 #endif /* ENABLE_LE_PERIPHERAL */ 5948 5949 5950 // Phase 3: modify 5951 5952 if (random_address_change){ 5953 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5954 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5955 if (hci_extended_advertising_supported()) { 5956 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5957 } 5958 #endif 5959 { 5960 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5961 } 5962 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 5963 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 5964 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5965 #endif 5966 return true; 5967 } 5968 5969 #ifdef ENABLE_LE_CENTRAL 5970 if (hci_stack->le_scanning_param_update){ 5971 hci_stack->le_scanning_param_update = false; 5972 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5973 if (hci_extended_advertising_supported()){ 5974 // prepare arrays for all PHYs 5975 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5976 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5977 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5978 uint8_t scanning_phys = 1; // LE 1M PHY 5979 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5980 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5981 } else 5982 #endif 5983 { 5984 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5985 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5986 } 5987 return true; 5988 } 5989 #endif 5990 5991 #ifdef ENABLE_LE_PERIPHERAL 5992 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5993 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5994 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5995 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5996 if (hci_extended_advertising_supported()){ 5997 // map advertisment type to advertising event properties 5998 uint16_t adv_event_properties = 0; 5999 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6000 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6001 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6002 } 6003 hci_stack->le_advertising_set_in_current_command = 0; 6004 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6005 0, 6006 adv_event_properties, 6007 hci_stack->le_advertisements_interval_min, 6008 hci_stack->le_advertisements_interval_max, 6009 hci_stack->le_advertisements_channel_map, 6010 hci_stack->le_advertisements_own_addr_type, 6011 hci_stack->le_advertisements_direct_address_type, 6012 hci_stack->le_advertisements_direct_address, 6013 hci_stack->le_advertisements_filter_policy, 6014 0x7f, // tx power: no preference 6015 0x01, // primary adv phy: LE 1M 6016 0, // secondary adv max skip 6017 0, // secondary adv phy 6018 0, // adv sid 6019 0 // scan request notification 6020 ); 6021 } 6022 #endif 6023 { 6024 hci_send_cmd(&hci_le_set_advertising_parameters, 6025 hci_stack->le_advertisements_interval_min, 6026 hci_stack->le_advertisements_interval_max, 6027 hci_stack->le_advertisements_type, 6028 hci_stack->le_advertisements_own_addr_type, 6029 hci_stack->le_advertisements_direct_address_type, 6030 hci_stack->le_advertisements_direct_address, 6031 hci_stack->le_advertisements_channel_map, 6032 hci_stack->le_advertisements_filter_policy); 6033 } 6034 return true; 6035 } 6036 6037 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6038 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6039 uint8_t adv_data_clean[31]; 6040 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6041 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6042 hci_stack->le_advertisements_data_len); 6043 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6044 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6045 if (hci_extended_advertising_supported()){ 6046 hci_stack->le_advertising_set_in_current_command = 0; 6047 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6048 } else 6049 #endif 6050 { 6051 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6052 } 6053 return true; 6054 } 6055 6056 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6057 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6058 uint8_t scan_data_clean[31]; 6059 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6060 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6061 hci_stack->le_scan_response_data_len); 6062 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6063 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6064 if (hci_extended_advertising_supported()){ 6065 hci_stack->le_advertising_set_in_current_command = 0; 6066 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6067 } else 6068 #endif 6069 { 6070 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6071 } 6072 return true; 6073 } 6074 6075 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6076 if (hci_extended_advertising_supported()) { 6077 btstack_linked_list_iterator_t it; 6078 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6079 while (btstack_linked_list_iterator_has_next(&it)){ 6080 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6081 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6082 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6083 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6084 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6085 return true; 6086 } 6087 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6088 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6089 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6090 return true; 6091 } 6092 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6093 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6094 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6095 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6096 advertising_set->advertising_handle, 6097 advertising_set->extended_params.advertising_event_properties, 6098 advertising_set->extended_params.primary_advertising_interval_min, 6099 advertising_set->extended_params.primary_advertising_interval_max, 6100 advertising_set->extended_params.primary_advertising_channel_map, 6101 advertising_set->extended_params.own_address_type, 6102 advertising_set->extended_params.peer_address_type, 6103 advertising_set->extended_params.peer_address, 6104 advertising_set->extended_params.advertising_filter_policy, 6105 advertising_set->extended_params.advertising_tx_power, 6106 advertising_set->extended_params.primary_advertising_phy, 6107 advertising_set->extended_params.secondary_advertising_max_skip, 6108 advertising_set->extended_params.secondary_advertising_phy, 6109 advertising_set->extended_params.advertising_sid, 6110 advertising_set->extended_params.scan_request_notification_enable 6111 ); 6112 return true; 6113 } 6114 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6115 uint16_t pos = advertising_set->adv_data_pos; 6116 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6117 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6118 if ((operation & 0x02) != 0){ 6119 // last fragment or complete data 6120 operation |= 2; 6121 advertising_set->adv_data_pos = 0; 6122 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6123 } else { 6124 advertising_set->adv_data_pos += data_to_upload; 6125 } 6126 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6127 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6128 return true; 6129 } 6130 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6131 uint16_t pos = advertising_set->scan_data_pos; 6132 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6133 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6134 if ((operation & 0x02) != 0){ 6135 advertising_set->scan_data_pos = 0; 6136 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6137 } else { 6138 advertising_set->scan_data_pos += data_to_upload; 6139 } 6140 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6141 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6142 return true; 6143 } 6144 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6145 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6146 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6147 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6148 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6149 advertising_set->advertising_handle, 6150 advertising_set->periodic_params.periodic_advertising_interval_min, 6151 advertising_set->periodic_params.periodic_advertising_interval_max, 6152 advertising_set->periodic_params.periodic_advertising_properties); 6153 return true; 6154 } 6155 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6156 uint16_t pos = advertising_set->periodic_data_pos; 6157 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6158 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6159 if ((operation & 0x02) != 0){ 6160 // last fragment or complete data 6161 operation |= 2; 6162 advertising_set->periodic_data_pos = 0; 6163 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6164 } else { 6165 advertising_set->periodic_data_pos += data_to_upload; 6166 } 6167 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6168 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6169 return true; 6170 } 6171 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6172 } 6173 } 6174 #endif 6175 6176 #endif 6177 6178 #ifdef ENABLE_LE_CENTRAL 6179 // if connect with whitelist was active and is not cancelled yet, wait until next time 6180 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6181 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6182 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6183 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6184 #endif 6185 #endif 6186 6187 // LE Whitelist Management 6188 if (whitelist_modification_pending){ 6189 // add/remove entries 6190 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6191 while (btstack_linked_list_iterator_has_next(&lit)){ 6192 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6193 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6194 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6195 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6196 return true; 6197 } 6198 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6199 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6200 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6201 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6202 return true; 6203 } 6204 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6205 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6206 btstack_memory_whitelist_entry_free(entry); 6207 } 6208 } 6209 } 6210 6211 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6212 // LE Resolving List Management 6213 if (resolving_list_supported) { 6214 uint16_t i; 6215 switch (hci_stack->le_resolving_list_state) { 6216 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6217 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6218 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6219 return true; 6220 case LE_RESOLVING_LIST_READ_SIZE: 6221 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6222 hci_send_cmd(&hci_le_read_resolving_list_size); 6223 return true; 6224 case LE_RESOLVING_LIST_SEND_CLEAR: 6225 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6226 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6227 sizeof(hci_stack->le_resolving_list_add_entries)); 6228 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6229 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6230 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6231 sizeof(hci_stack->le_resolving_list_remove_entries)); 6232 hci_send_cmd(&hci_le_clear_resolving_list); 6233 return true; 6234 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6235 // first remove old entries 6236 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6237 uint8_t offset = i >> 3; 6238 uint8_t mask = 1 << (i & 7); 6239 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6240 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6241 bd_addr_t peer_identity_addreses; 6242 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6243 sm_key_t peer_irk; 6244 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6245 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6246 6247 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6248 // trigger whitelist entry 'update' (work around for controller bug) 6249 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6250 while (btstack_linked_list_iterator_has_next(&lit)) { 6251 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6252 if (entry->address_type != peer_identity_addr_type) continue; 6253 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6254 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6255 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6256 } 6257 #endif 6258 6259 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6260 peer_identity_addreses); 6261 return true; 6262 } 6263 6264 // then add new entries 6265 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6266 uint8_t offset = i >> 3; 6267 uint8_t mask = 1 << (i & 7); 6268 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6269 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6270 bd_addr_t peer_identity_addreses; 6271 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6272 sm_key_t peer_irk; 6273 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6274 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6275 if (btstack_is_null(peer_irk, 16)) continue; 6276 const uint8_t *local_irk = gap_get_persistent_irk(); 6277 // command uses format specifier 'P' that stores 16-byte value without flip 6278 uint8_t local_irk_flipped[16]; 6279 uint8_t peer_irk_flipped[16]; 6280 reverse_128(local_irk, local_irk_flipped); 6281 reverse_128(peer_irk, peer_irk_flipped); 6282 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6283 peer_irk_flipped, local_irk_flipped); 6284 return true; 6285 } 6286 6287 // finally, set privacy mode 6288 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6289 uint8_t offset = i >> 3; 6290 uint8_t mask = 1 << (i & 7); 6291 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6292 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6293 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6294 // Network Privacy Mode is default 6295 continue; 6296 } 6297 bd_addr_t peer_identity_address; 6298 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6299 sm_key_t peer_irk; 6300 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6301 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6302 if (btstack_is_null(peer_irk, 16)) continue; 6303 // command uses format specifier 'P' that stores 16-byte value without flip 6304 uint8_t peer_irk_flipped[16]; 6305 reverse_128(peer_irk, peer_irk_flipped); 6306 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6307 return true; 6308 } 6309 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6310 break; 6311 6312 default: 6313 break; 6314 } 6315 } 6316 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6317 #endif 6318 6319 #ifdef ENABLE_LE_CENTRAL 6320 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6321 // LE Whitelist Management 6322 if (periodic_list_modification_pending){ 6323 // add/remove entries 6324 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6325 while (btstack_linked_list_iterator_has_next(&lit)){ 6326 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6327 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6328 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6329 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6330 return true; 6331 } 6332 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6333 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6334 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6335 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6336 return true; 6337 } 6338 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6339 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6340 btstack_memory_periodic_advertiser_list_entry_free(entry); 6341 } 6342 } 6343 } 6344 #endif 6345 #endif 6346 6347 #ifdef ENABLE_LE_CENTRAL 6348 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6349 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6350 if (hci_stack->le_past_set_default_params){ 6351 hci_stack->le_past_set_default_params = false; 6352 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6353 hci_stack->le_past_mode, 6354 hci_stack->le_past_skip, 6355 hci_stack->le_past_sync_timeout, 6356 hci_stack->le_past_cte_type); 6357 return true; 6358 } 6359 #endif 6360 #endif 6361 #endif 6362 6363 // post-pone all actions until stack is fully working 6364 if (hci_stack->state != HCI_STATE_WORKING) return false; 6365 6366 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6367 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6368 6369 // Phase 4: restore state 6370 6371 #ifdef ENABLE_LE_CENTRAL 6372 // re-start scanning 6373 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6374 hci_stack->le_scanning_active = true; 6375 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6376 if (hci_extended_advertising_supported()){ 6377 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6378 } else 6379 #endif 6380 { 6381 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6382 } 6383 return true; 6384 } 6385 #endif 6386 6387 #ifdef ENABLE_LE_CENTRAL 6388 // re-start connecting 6389 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6390 bd_addr_t null_addr; 6391 memset(null_addr, 0, 6); 6392 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6393 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6394 hci_send_le_create_connection(1, 0, null_addr); 6395 return true; 6396 } 6397 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6398 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6399 switch(hci_stack->le_periodic_sync_request){ 6400 case LE_CONNECTING_DIRECT: 6401 case LE_CONNECTING_WHITELIST: 6402 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6403 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6404 hci_stack->le_periodic_sync_options, 6405 hci_stack->le_periodic_sync_advertising_sid, 6406 hci_stack->le_periodic_sync_advertiser_address_type, 6407 hci_stack->le_periodic_sync_advertiser_address, 6408 hci_stack->le_periodic_sync_skip, 6409 hci_stack->le_periodic_sync_timeout, 6410 hci_stack->le_periodic_sync_cte_type); 6411 return true; 6412 default: 6413 break; 6414 } 6415 } 6416 #endif 6417 #endif 6418 6419 #ifdef ENABLE_LE_PERIPHERAL 6420 // re-start advertising 6421 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6422 // check if advertisements should be enabled given 6423 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6424 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6425 6426 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6427 if (hci_extended_advertising_supported()){ 6428 const uint8_t advertising_handles[] = { 0 }; 6429 const uint16_t durations[] = { 0 }; 6430 const uint16_t max_events[] = { 0 }; 6431 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6432 } else 6433 #endif 6434 { 6435 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6436 } 6437 return true; 6438 } 6439 6440 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6441 if (hci_extended_advertising_supported()) { 6442 btstack_linked_list_iterator_t it; 6443 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6444 while (btstack_linked_list_iterator_has_next(&it)) { 6445 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6446 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6447 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6448 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6449 const uint16_t durations[] = { advertising_set->enable_timeout }; 6450 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6451 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6452 return true; 6453 } 6454 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6455 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6456 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6457 uint8_t enable = 1; 6458 if (advertising_set->periodic_include_adi){ 6459 enable |= 2; 6460 } 6461 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6462 return true; 6463 } 6464 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6465 } 6466 } 6467 #endif 6468 #endif 6469 6470 return false; 6471 } 6472 6473 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6474 static bool hci_run_iso_tasks(void){ 6475 btstack_linked_list_iterator_t it; 6476 6477 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6478 return false; 6479 } 6480 6481 // BIG 6482 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6483 while (btstack_linked_list_iterator_has_next(&it)){ 6484 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6485 switch (big->state){ 6486 case LE_AUDIO_BIG_STATE_CREATE: 6487 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6488 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6489 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6490 hci_send_cmd(&hci_le_create_big, 6491 big->params->big_handle, 6492 big->params->advertising_handle, 6493 big->params->num_bis, 6494 big->params->sdu_interval_us, 6495 big->params->max_sdu, 6496 big->params->max_transport_latency_ms, 6497 big->params->rtn, 6498 big->params->phy, 6499 big->params->packing, 6500 big->params->framing, 6501 big->params->encryption, 6502 big->params->broadcast_code); 6503 return true; 6504 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6505 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6506 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); 6507 return true; 6508 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6509 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6510 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6511 return true; 6512 case LE_AUDIO_BIG_STATE_TERMINATE: 6513 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6514 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6515 return true; 6516 default: 6517 break; 6518 } 6519 } 6520 6521 // BIG Sync 6522 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6523 while (btstack_linked_list_iterator_has_next(&it)){ 6524 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6525 switch (big_sync->state){ 6526 case LE_AUDIO_BIG_STATE_CREATE: 6527 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6528 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6529 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6530 hci_send_cmd(&hci_le_big_create_sync, 6531 big_sync->params->big_handle, 6532 big_sync->params->sync_handle, 6533 big_sync->params->encryption, 6534 big_sync->params->broadcast_code, 6535 big_sync->params->mse, 6536 big_sync->params->big_sync_timeout_10ms, 6537 big_sync->params->num_bis, 6538 big_sync->params->bis_indices); 6539 return true; 6540 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6541 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6542 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); 6543 return true; 6544 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6545 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6546 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6547 return true; 6548 case LE_AUDIO_BIG_STATE_TERMINATE: 6549 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6550 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6551 return true; 6552 default: 6553 break; 6554 } 6555 } 6556 6557 // CIG 6558 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6559 while (btstack_linked_list_iterator_has_next(&it)) { 6560 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6561 uint8_t i; 6562 // Set CIG Parameters 6563 uint8_t cis_id[MAX_NR_CIS]; 6564 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6565 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6566 uint8_t phy_c_to_p[MAX_NR_CIS]; 6567 uint8_t phy_p_to_c[MAX_NR_CIS]; 6568 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6569 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6570 switch (cig->state) { 6571 case LE_AUDIO_CIG_STATE_CREATE: 6572 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6573 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6574 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6575 le_audio_cig_params_t * params = cig->params; 6576 for (i = 0; i < params->num_cis; i++) { 6577 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6578 cis_id[i] = cis_params->cis_id; 6579 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6580 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6581 phy_c_to_p[i] = cis_params->phy_c_to_p; 6582 phy_p_to_c[i] = cis_params->phy_p_to_c; 6583 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6584 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6585 } 6586 hci_send_cmd(&hci_le_set_cig_parameters, 6587 cig->cig_id, 6588 params->sdu_interval_c_to_p, 6589 params->sdu_interval_p_to_c, 6590 params->worst_case_sca, 6591 params->packing, 6592 params->framing, 6593 params->max_transport_latency_c_to_p, 6594 params->max_transport_latency_p_to_c, 6595 params->num_cis, 6596 cis_id, 6597 max_sdu_c_to_p, 6598 max_sdu_p_to_c, 6599 phy_c_to_p, 6600 phy_p_to_c, 6601 rtn_c_to_p, 6602 rtn_p_to_c 6603 ); 6604 return true; 6605 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6606 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6607 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6608 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6609 for (i=0;i<cig->num_cis;i++){ 6610 cig->cis_setup_active[i] = true; 6611 } 6612 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6613 return true; 6614 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6615 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6616 // find next path to setup 6617 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6618 if (cig->cis_established[cis_index] == false) { 6619 continue; 6620 } 6621 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6622 bool setup = true; 6623 if (cis_direction == 0){ 6624 // 0 - input - host to controller 6625 // we are central => central to peripheral 6626 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6627 } else { 6628 // 1 - output - controller to host 6629 // we are central => peripheral to central 6630 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6631 } 6632 if (setup){ 6633 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6634 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6635 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6636 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6637 return true; 6638 } 6639 cig->state_vars.next_cis++; 6640 } 6641 // emit done 6642 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6643 default: 6644 break; 6645 } 6646 } 6647 6648 // CIS Accept/Reject 6649 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6650 while (btstack_linked_list_iterator_has_next(&it)) { 6651 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6652 hci_con_handle_t con_handle; 6653 switch (iso_stream->state){ 6654 case HCI_ISO_STREAM_W2_ACCEPT: 6655 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6656 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6657 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6658 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->con_handle); 6659 return true; 6660 case HCI_ISO_STREAM_W2_REJECT: 6661 con_handle = iso_stream->con_handle; 6662 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6663 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6664 hci_iso_stream_finalize(iso_stream); 6665 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6666 return true; 6667 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6668 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6669 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6670 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6671 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6672 break; 6673 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6674 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6675 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6676 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6677 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6678 break; 6679 default: 6680 break; 6681 } 6682 } 6683 6684 return false; 6685 } 6686 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6687 #endif 6688 6689 static bool hci_run_general_pending_commands(void){ 6690 btstack_linked_item_t * it; 6691 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6692 hci_connection_t * connection = (hci_connection_t *) it; 6693 6694 switch(connection->state){ 6695 case SEND_CREATE_CONNECTION: 6696 switch(connection->address_type){ 6697 #ifdef ENABLE_CLASSIC 6698 case BD_ADDR_TYPE_ACL: 6699 log_info("sending hci_create_connection"); 6700 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6701 break; 6702 #endif 6703 default: 6704 #ifdef ENABLE_BLE 6705 #ifdef ENABLE_LE_CENTRAL 6706 log_info("sending hci_le_create_connection"); 6707 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6708 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6709 hci_send_le_create_connection(0, connection->address_type, connection->address); 6710 connection->state = SENT_CREATE_CONNECTION; 6711 #endif 6712 #endif 6713 break; 6714 } 6715 return true; 6716 6717 #ifdef ENABLE_CLASSIC 6718 case RECEIVED_CONNECTION_REQUEST: 6719 connection->role = HCI_ROLE_SLAVE; 6720 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6721 log_info("sending hci_accept_connection_request"); 6722 connection->state = ACCEPTED_CONNECTION_REQUEST; 6723 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6724 return true; 6725 } 6726 break; 6727 #endif 6728 case SEND_DISCONNECT: 6729 connection->state = SENT_DISCONNECT; 6730 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6731 return true; 6732 6733 default: 6734 break; 6735 } 6736 6737 // no further commands if connection is about to get shut down 6738 if (connection->state == SENT_DISCONNECT) continue; 6739 6740 #ifdef ENABLE_CLASSIC 6741 6742 // Handling link key request requires remote supported features 6743 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6744 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6745 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6746 6747 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6748 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6749 if (have_link_key && security_level_sufficient){ 6750 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6751 } else { 6752 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6753 } 6754 return true; 6755 } 6756 6757 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6758 log_info("denying to pin request"); 6759 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6760 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6761 return true; 6762 } 6763 6764 // security assessment requires remote features 6765 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6766 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6767 hci_ssp_assess_security_on_io_cap_request(connection); 6768 // 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 6769 } 6770 6771 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6772 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6773 // set authentication requirements: 6774 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6775 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6776 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6777 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6778 authreq |= 1; 6779 } 6780 bool bonding = hci_stack->bondable; 6781 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6782 // if we have received IO Cap Response, we're in responder role 6783 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6784 if (bonding && !remote_bonding){ 6785 log_info("Remote not bonding, dropping local flag"); 6786 bonding = false; 6787 } 6788 } 6789 if (bonding){ 6790 if (connection->bonding_flags & BONDING_DEDICATED){ 6791 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6792 } else { 6793 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6794 } 6795 } 6796 uint8_t have_oob_data = 0; 6797 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6798 if (connection->classic_oob_c_192 != NULL){ 6799 have_oob_data |= 1; 6800 } 6801 if (connection->classic_oob_c_256 != NULL){ 6802 have_oob_data |= 2; 6803 } 6804 #endif 6805 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6806 return true; 6807 } 6808 6809 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6810 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6811 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6812 return true; 6813 } 6814 6815 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6816 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6817 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6818 const uint8_t zero[16] = { 0 }; 6819 const uint8_t * r_192 = zero; 6820 const uint8_t * c_192 = zero; 6821 const uint8_t * r_256 = zero; 6822 const uint8_t * c_256 = zero; 6823 // verify P-256 OOB 6824 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6825 c_256 = connection->classic_oob_c_256; 6826 if (connection->classic_oob_r_256 != NULL) { 6827 r_256 = connection->classic_oob_r_256; 6828 } 6829 } 6830 // verify P-192 OOB 6831 if ((connection->classic_oob_c_192 != NULL)) { 6832 c_192 = connection->classic_oob_c_192; 6833 if (connection->classic_oob_r_192 != NULL) { 6834 r_192 = connection->classic_oob_r_192; 6835 } 6836 } 6837 6838 // assess security 6839 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6840 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6841 if (need_level_4 && !can_reach_level_4){ 6842 log_info("Level 4 required, but not possible -> abort"); 6843 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6844 // send oob negative reply 6845 c_256 = NULL; 6846 c_192 = NULL; 6847 } 6848 6849 // Reply 6850 if (c_256 != zero) { 6851 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6852 } else if (c_192 != zero){ 6853 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6854 } else { 6855 hci_stack->classic_oob_con_handle = connection->con_handle; 6856 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6857 } 6858 return true; 6859 } 6860 #endif 6861 6862 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6863 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6864 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6865 return true; 6866 } 6867 6868 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6869 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6870 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6871 return true; 6872 } 6873 6874 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6875 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6876 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6877 return true; 6878 } 6879 6880 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6881 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6882 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6883 connection->state = SENT_DISCONNECT; 6884 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6885 return true; 6886 } 6887 6888 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6889 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6890 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6891 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6892 return true; 6893 } 6894 6895 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6896 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6897 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6898 return true; 6899 } 6900 6901 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6902 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6903 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6904 return true; 6905 } 6906 6907 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6908 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6909 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6910 return true; 6911 } 6912 6913 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6914 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6915 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6916 return true; 6917 } 6918 6919 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6920 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6921 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6922 return true; 6923 } 6924 #endif 6925 6926 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6927 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6928 #ifdef ENABLE_CLASSIC 6929 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6930 #endif 6931 if (connection->state != SENT_DISCONNECT){ 6932 connection->state = SENT_DISCONNECT; 6933 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6934 return true; 6935 } 6936 } 6937 6938 #ifdef ENABLE_CLASSIC 6939 uint16_t sniff_min_interval; 6940 switch (connection->sniff_min_interval){ 6941 case 0: 6942 break; 6943 case 0xffff: 6944 connection->sniff_min_interval = 0; 6945 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6946 return true; 6947 default: 6948 sniff_min_interval = connection->sniff_min_interval; 6949 connection->sniff_min_interval = 0; 6950 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6951 return true; 6952 } 6953 6954 if (connection->sniff_subrating_max_latency != 0xffff){ 6955 uint16_t max_latency = connection->sniff_subrating_max_latency; 6956 connection->sniff_subrating_max_latency = 0; 6957 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6958 return true; 6959 } 6960 6961 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6962 uint8_t service_type = (uint8_t) connection->qos_service_type; 6963 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6964 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); 6965 return true; 6966 } 6967 6968 if (connection->request_role != HCI_ROLE_INVALID){ 6969 hci_role_t role = connection->request_role; 6970 connection->request_role = HCI_ROLE_INVALID; 6971 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6972 return true; 6973 } 6974 #endif 6975 6976 if (connection->gap_connection_tasks != 0){ 6977 #ifdef ENABLE_CLASSIC 6978 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6979 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6980 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6981 return true; 6982 } 6983 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6984 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6985 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6986 return true; 6987 } 6988 #endif 6989 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6990 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6991 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6992 return true; 6993 } 6994 #ifdef ENABLE_BLE 6995 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 6996 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 6997 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 6998 return true; 6999 } 7000 #endif 7001 } 7002 7003 #ifdef ENABLE_BLE 7004 switch (connection->le_con_parameter_update_state){ 7005 // response to L2CAP CON PARAMETER UPDATE REQUEST 7006 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7007 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7008 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7009 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7010 0x0000, 0xffff); 7011 return true; 7012 case CON_PARAMETER_UPDATE_REPLY: 7013 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7014 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7015 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7016 0x0000, 0xffff); 7017 return true; 7018 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7019 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7020 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7021 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7022 return true; 7023 default: 7024 break; 7025 } 7026 if (connection->le_phy_update_all_phys != 0xffu){ 7027 uint8_t all_phys = connection->le_phy_update_all_phys; 7028 connection->le_phy_update_all_phys = 0xff; 7029 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); 7030 return true; 7031 } 7032 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7033 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7034 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7035 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7036 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7037 return true; 7038 } 7039 #endif 7040 #endif 7041 } 7042 return false; 7043 } 7044 7045 static void hci_run(void){ 7046 7047 // stack state sub statemachines 7048 switch (hci_stack->state) { 7049 case HCI_STATE_INITIALIZING: 7050 hci_initializing_run(); 7051 break; 7052 case HCI_STATE_HALTING: 7053 hci_halting_run(); 7054 break; 7055 case HCI_STATE_FALLING_ASLEEP: 7056 hci_falling_asleep_run(); 7057 break; 7058 default: 7059 break; 7060 } 7061 7062 // allow to run after initialization to working transition 7063 if (hci_stack->state != HCI_STATE_WORKING){ 7064 return; 7065 } 7066 7067 bool done; 7068 7069 // send continuation fragments first, as they block the prepared packet buffer 7070 done = hci_run_acl_fragments(); 7071 if (done) return; 7072 7073 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7074 done = hci_run_iso_fragments(); 7075 if (done) return; 7076 #endif 7077 7078 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7079 // send host num completed packets next as they don't require num_cmd_packets > 0 7080 if (!hci_can_send_comand_packet_transport()) return; 7081 if (hci_stack->host_completed_packets){ 7082 hci_host_num_completed_packets(); 7083 return; 7084 } 7085 #endif 7086 7087 if (!hci_can_send_command_packet_now()) return; 7088 7089 // global/non-connection oriented commands 7090 7091 7092 #ifdef ENABLE_CLASSIC 7093 // general gap classic 7094 done = hci_run_general_gap_classic(); 7095 if (done) return; 7096 #endif 7097 7098 #ifdef ENABLE_BLE 7099 // general gap le 7100 done = hci_run_general_gap_le(); 7101 if (done) return; 7102 7103 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7104 // ISO related tasks, e.g. BIG create/terminate/sync 7105 done = hci_run_iso_tasks(); 7106 if (done) return; 7107 #endif 7108 #endif 7109 7110 // send pending HCI commands 7111 hci_run_general_pending_commands(); 7112 } 7113 7114 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7115 // house-keeping 7116 7117 #ifdef ENABLE_CLASSIC 7118 bd_addr_t addr; 7119 hci_connection_t * conn; 7120 #endif 7121 #ifdef ENABLE_LE_CENTRAL 7122 uint8_t initiator_filter_policy; 7123 #endif 7124 7125 uint16_t opcode = little_endian_read_16(packet, 0); 7126 switch (opcode) { 7127 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7128 hci_stack->loopback_mode = packet[3]; 7129 break; 7130 7131 #ifdef ENABLE_CLASSIC 7132 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7133 reverse_bd_addr(&packet[3], addr); 7134 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7135 7136 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7137 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7138 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7139 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7140 } 7141 7142 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7143 if (!conn) { 7144 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7145 if (!conn) { 7146 // notify client that alloc failed 7147 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7148 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7149 } 7150 conn->state = SEND_CREATE_CONNECTION; 7151 conn->role = HCI_ROLE_MASTER; 7152 } 7153 7154 log_info("conn state %u", conn->state); 7155 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7156 switch (conn->state) { 7157 // if connection active exists 7158 case OPEN: 7159 // and OPEN, emit connection complete command 7160 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7161 // packet not sent to controller 7162 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7163 case RECEIVED_DISCONNECTION_COMPLETE: 7164 // create connection triggered in disconnect complete event, let's do it now 7165 break; 7166 case SEND_CREATE_CONNECTION: 7167 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7168 if (hci_classic_operation_active()){ 7169 return ERROR_CODE_SUCCESS; 7170 } 7171 #endif 7172 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7173 break; 7174 default: 7175 // otherwise, just ignore as it is already in the open process 7176 // packet not sent to controller 7177 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7178 } 7179 conn->state = SENT_CREATE_CONNECTION; 7180 7181 // track outgoing connection 7182 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7183 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7184 break; 7185 7186 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7187 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7188 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7189 if (conn == NULL) { 7190 // neither SCO nor ACL connection for con handle 7191 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7192 } else { 7193 switch (conn->address_type){ 7194 case BD_ADDR_TYPE_ACL: 7195 // assert SCO connection does not exit 7196 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7197 return ERROR_CODE_COMMAND_DISALLOWED; 7198 } 7199 // allocate connection struct 7200 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO); 7201 if (!conn) { 7202 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7203 } 7204 conn->role = HCI_ROLE_MASTER; 7205 break; 7206 case BD_ADDR_TYPE_SCO: 7207 // update of existing SCO connection 7208 break; 7209 default: 7210 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7211 } 7212 } 7213 7214 // conn refers to hci connection of type sco now 7215 7216 conn->state = SENT_CREATE_CONNECTION; 7217 7218 // track outgoing connection to handle command status with error 7219 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7220 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7221 7222 // setup_synchronous_connection? Voice setting at offset 22 7223 // TODO: compare to current setting if sco connection already active 7224 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7225 break; 7226 7227 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7228 // get SCO connection 7229 reverse_bd_addr(&packet[3], addr); 7230 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7231 if (conn == NULL){ 7232 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7233 } 7234 7235 conn->state = ACCEPTED_CONNECTION_REQUEST; 7236 7237 // track outgoing connection to handle command status with error 7238 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7239 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7240 7241 // accept_synchronous_connection? Voice setting at offset 18 7242 // TODO: compare to current setting if sco connection already active 7243 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7244 break; 7245 #endif 7246 #endif 7247 7248 #ifdef ENABLE_BLE 7249 #ifdef ENABLE_LE_CENTRAL 7250 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7251 // white list used? 7252 initiator_filter_policy = packet[7]; 7253 switch (initiator_filter_policy) { 7254 case 0: 7255 // whitelist not used 7256 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7257 break; 7258 case 1: 7259 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7260 break; 7261 default: 7262 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7263 break; 7264 } 7265 // track outgoing connection 7266 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7267 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7268 break; 7269 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7270 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7271 // white list used? 7272 initiator_filter_policy = packet[3]; 7273 switch (initiator_filter_policy) { 7274 case 0: 7275 // whitelist not used 7276 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7277 break; 7278 case 1: 7279 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7280 break; 7281 default: 7282 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7283 break; 7284 } 7285 // track outgoing connection 7286 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7287 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7288 break; 7289 #endif 7290 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7291 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7292 break; 7293 #endif 7294 #endif /* ENABLE_BLE */ 7295 default: 7296 break; 7297 } 7298 7299 hci_stack->num_cmd_packets--; 7300 7301 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7302 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7303 if (err != 0){ 7304 return ERROR_CODE_HARDWARE_FAILURE; 7305 } 7306 return ERROR_CODE_SUCCESS; 7307 } 7308 7309 // disconnect because of security block 7310 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7311 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7312 if (!connection) return; 7313 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7314 } 7315 7316 7317 // Configure Secure Simple Pairing 7318 7319 #ifdef ENABLE_CLASSIC 7320 7321 // enable will enable SSP during init 7322 void gap_ssp_set_enable(int enable){ 7323 hci_stack->ssp_enable = enable; 7324 } 7325 7326 static int hci_local_ssp_activated(void){ 7327 return gap_ssp_supported() && hci_stack->ssp_enable; 7328 } 7329 7330 // if set, BTstack will respond to io capability request using authentication requirement 7331 void gap_ssp_set_io_capability(int io_capability){ 7332 hci_stack->ssp_io_capability = io_capability; 7333 } 7334 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7335 hci_stack->ssp_authentication_requirement = authentication_requirement; 7336 } 7337 7338 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7339 void gap_ssp_set_auto_accept(int auto_accept){ 7340 hci_stack->ssp_auto_accept = auto_accept; 7341 } 7342 7343 void gap_secure_connections_enable(bool enable){ 7344 hci_stack->secure_connections_enable = enable; 7345 } 7346 bool gap_secure_connections_active(void){ 7347 return hci_stack->secure_connections_active; 7348 } 7349 7350 #endif 7351 7352 // va_list part of hci_send_cmd 7353 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7354 if (!hci_can_send_command_packet_now()){ 7355 log_error("hci_send_cmd called but cannot send packet now"); 7356 return ERROR_CODE_COMMAND_DISALLOWED; 7357 } 7358 7359 // for HCI INITIALIZATION 7360 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7361 hci_stack->last_cmd_opcode = cmd->opcode; 7362 7363 hci_reserve_packet_buffer(); 7364 uint8_t * packet = hci_stack->hci_packet_buffer; 7365 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7366 uint8_t status = hci_send_cmd_packet(packet, size); 7367 7368 // release packet buffer on error or for synchronous transport implementations 7369 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7370 hci_release_packet_buffer(); 7371 hci_emit_transport_packet_sent(); 7372 } 7373 7374 return status; 7375 } 7376 7377 /** 7378 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7379 */ 7380 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7381 va_list argptr; 7382 va_start(argptr, cmd); 7383 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7384 va_end(argptr); 7385 return status; 7386 } 7387 7388 // Create various non-HCI events. 7389 // TODO: generalize, use table similar to hci_create_command 7390 7391 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7392 // dump packet 7393 if (dump) { 7394 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7395 } 7396 7397 // dispatch to all event handlers 7398 btstack_linked_list_iterator_t it; 7399 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7400 while (btstack_linked_list_iterator_has_next(&it)){ 7401 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7402 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7403 } 7404 } 7405 7406 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7407 if (!hci_stack->acl_packet_handler) return; 7408 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7409 } 7410 7411 #ifdef ENABLE_CLASSIC 7412 static void hci_notify_if_sco_can_send_now(void){ 7413 // notify SCO sender if waiting 7414 if (!hci_stack->sco_waiting_for_can_send_now) return; 7415 if (hci_can_send_sco_packet_now()){ 7416 hci_stack->sco_waiting_for_can_send_now = 0; 7417 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7418 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7419 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7420 } 7421 } 7422 7423 // parsing end emitting has been merged to reduce code size 7424 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7425 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7426 7427 uint8_t * eir_data; 7428 ad_context_t context; 7429 const uint8_t * name; 7430 uint8_t name_len; 7431 7432 if (size < 3) return; 7433 7434 int event_type = hci_event_packet_get_type(packet); 7435 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7436 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7437 7438 switch (event_type){ 7439 case HCI_EVENT_INQUIRY_RESULT: 7440 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7441 if (size != (3 + (num_responses * 14))) return; 7442 break; 7443 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7444 if (size != 257) return; 7445 if (num_responses != 1) return; 7446 break; 7447 default: 7448 return; 7449 } 7450 7451 // event[1] is set at the end 7452 int i; 7453 for (i=0; i<num_responses;i++){ 7454 memset(event, 0, sizeof(event)); 7455 event[0] = GAP_EVENT_INQUIRY_RESULT; 7456 uint8_t event_size = 27; // if name is not set by EIR 7457 7458 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7459 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7460 (void)memcpy(&event[9], 7461 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7462 3); // class of device 7463 (void)memcpy(&event[12], 7464 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7465 2); // clock offset 7466 7467 switch (event_type){ 7468 case HCI_EVENT_INQUIRY_RESULT: 7469 // 14,15,16,17 = 0, size 18 7470 break; 7471 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7472 event[14] = 1; 7473 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7474 // 16,17 = 0, size 18 7475 break; 7476 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7477 event[14] = 1; 7478 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7479 // EIR packets only contain a single inquiry response 7480 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7481 name = NULL; 7482 // Iterate over EIR data 7483 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7484 uint8_t data_type = ad_iterator_get_data_type(&context); 7485 uint8_t data_size = ad_iterator_get_data_len(&context); 7486 const uint8_t * data = ad_iterator_get_data(&context); 7487 // Prefer Complete Local Name over Shortened Local Name 7488 switch (data_type){ 7489 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7490 if (name) continue; 7491 /* fall through */ 7492 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7493 name = data; 7494 name_len = data_size; 7495 break; 7496 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7497 if (data_size != 8) break; 7498 event[16] = 1; 7499 memcpy(&event[17], data, 8); 7500 break; 7501 default: 7502 break; 7503 } 7504 } 7505 if (name){ 7506 event[25] = 1; 7507 // truncate name if needed 7508 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7509 event[26] = len; 7510 (void)memcpy(&event[27], name, len); 7511 event_size += len; 7512 } 7513 break; 7514 default: 7515 return; 7516 } 7517 event[1] = event_size - 2; 7518 hci_emit_event(event, event_size, 1); 7519 } 7520 } 7521 #endif 7522 7523 void hci_emit_state(void){ 7524 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7525 uint8_t event[3]; 7526 event[0] = BTSTACK_EVENT_STATE; 7527 event[1] = sizeof(event) - 2u; 7528 event[2] = hci_stack->state; 7529 hci_emit_event(event, sizeof(event), 1); 7530 } 7531 7532 #ifdef ENABLE_CLASSIC 7533 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7534 uint8_t event[13]; 7535 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7536 event[1] = sizeof(event) - 2; 7537 event[2] = status; 7538 little_endian_store_16(event, 3, con_handle); 7539 reverse_bd_addr(address, &event[5]); 7540 event[11] = 1; // ACL connection 7541 event[12] = 0; // encryption disabled 7542 hci_emit_event(event, sizeof(event), 1); 7543 } 7544 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7545 if (disable_l2cap_timeouts) return; 7546 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7547 uint8_t event[4]; 7548 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7549 event[1] = sizeof(event) - 2; 7550 little_endian_store_16(event, 2, conn->con_handle); 7551 hci_emit_event(event, sizeof(event), 1); 7552 } 7553 #endif 7554 7555 #ifdef ENABLE_BLE 7556 #ifdef ENABLE_LE_CENTRAL 7557 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){ 7558 uint8_t event[21]; 7559 event[0] = HCI_EVENT_LE_META; 7560 event[1] = sizeof(event) - 2u; 7561 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7562 event[3] = status; 7563 little_endian_store_16(event, 4, con_handle); 7564 event[6] = 0; // TODO: role 7565 event[7] = address_type; 7566 reverse_bd_addr(address, &event[8]); 7567 little_endian_store_16(event, 14, 0); // interval 7568 little_endian_store_16(event, 16, 0); // latency 7569 little_endian_store_16(event, 18, 0); // supervision timeout 7570 event[20] = 0; // master clock accuracy 7571 hci_emit_event(event, sizeof(event), 1); 7572 } 7573 #endif 7574 #endif 7575 7576 static void hci_emit_transport_packet_sent(void){ 7577 // notify upper stack that it might be possible to send again 7578 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7579 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7580 } 7581 7582 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7583 uint8_t event[6]; 7584 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7585 event[1] = sizeof(event) - 2u; 7586 event[2] = 0; // status = OK 7587 little_endian_store_16(event, 3, con_handle); 7588 event[5] = reason; 7589 hci_emit_event(event, sizeof(event), 1); 7590 } 7591 7592 static void hci_emit_nr_connections_changed(void){ 7593 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7594 uint8_t event[3]; 7595 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7596 event[1] = sizeof(event) - 2u; 7597 event[2] = nr_hci_connections(); 7598 hci_emit_event(event, sizeof(event), 1); 7599 } 7600 7601 static void hci_emit_hci_open_failed(void){ 7602 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7603 uint8_t event[2]; 7604 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7605 event[1] = sizeof(event) - 2u; 7606 hci_emit_event(event, sizeof(event), 1); 7607 } 7608 7609 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7610 log_info("hci_emit_dedicated_bonding_result %u ", status); 7611 uint8_t event[9]; 7612 int pos = 0; 7613 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7614 event[pos++] = sizeof(event) - 2u; 7615 event[pos++] = status; 7616 reverse_bd_addr(address, &event[pos]); 7617 hci_emit_event(event, sizeof(event), 1); 7618 } 7619 7620 7621 #ifdef ENABLE_CLASSIC 7622 7623 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7624 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7625 uint8_t event[5]; 7626 int pos = 0; 7627 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7628 event[pos++] = sizeof(event) - 2; 7629 little_endian_store_16(event, 2, con_handle); 7630 pos += 2; 7631 event[pos++] = level; 7632 hci_emit_event(event, sizeof(event), 1); 7633 } 7634 7635 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7636 if (!connection) return LEVEL_0; 7637 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7638 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7639 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7640 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7641 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7642 // LEVEL 4 always requires 128 bit encrytion key size 7643 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7644 security_level = LEVEL_3; 7645 } 7646 return security_level; 7647 } 7648 7649 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7650 uint8_t event[4]; 7651 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7652 event[1] = sizeof(event) - 2; 7653 event[2] = discoverable; 7654 event[3] = connectable; 7655 hci_emit_event(event, sizeof(event), 1); 7656 } 7657 7658 // query if remote side supports eSCO 7659 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7660 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7661 if (!connection) return false; 7662 return (connection->remote_supported_features[0] & 1) != 0; 7663 } 7664 7665 static bool hci_ssp_supported(hci_connection_t * connection){ 7666 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7667 return (connection->bonding_flags & mask) == mask; 7668 } 7669 7670 // query if remote side supports SSP 7671 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7672 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7673 if (!connection) return false; 7674 return hci_ssp_supported(connection) ? 1 : 0; 7675 } 7676 7677 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7678 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7679 } 7680 7681 /** 7682 * Check if remote supported features query has completed 7683 */ 7684 bool hci_remote_features_available(hci_con_handle_t handle){ 7685 hci_connection_t * connection = hci_connection_for_handle(handle); 7686 if (!connection) return false; 7687 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7688 } 7689 7690 /** 7691 * Trigger remote supported features query 7692 */ 7693 7694 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7695 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7696 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7697 } 7698 } 7699 7700 void hci_remote_features_query(hci_con_handle_t con_handle){ 7701 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7702 if (!connection) return; 7703 hci_trigger_remote_features_for_connection(connection); 7704 hci_run(); 7705 } 7706 7707 // GAP API 7708 /** 7709 * @bbrief enable/disable bonding. default is enabled 7710 * @praram enabled 7711 */ 7712 void gap_set_bondable_mode(int enable){ 7713 hci_stack->bondable = enable ? 1 : 0; 7714 } 7715 /** 7716 * @brief Get bondable mode. 7717 * @return 1 if bondable 7718 */ 7719 int gap_get_bondable_mode(void){ 7720 return hci_stack->bondable; 7721 } 7722 7723 /** 7724 * @brief map link keys to security levels 7725 */ 7726 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7727 switch (link_key_type){ 7728 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7729 return LEVEL_4; 7730 case COMBINATION_KEY: 7731 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7732 return LEVEL_3; 7733 default: 7734 return LEVEL_2; 7735 } 7736 } 7737 7738 /** 7739 * @brief map link keys to secure connection yes/no 7740 */ 7741 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7742 switch (link_key_type){ 7743 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7744 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7745 return true; 7746 default: 7747 return false; 7748 } 7749 } 7750 7751 /** 7752 * @brief map link keys to authenticated 7753 */ 7754 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7755 switch (link_key_type){ 7756 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7757 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7758 return true; 7759 default: 7760 return false; 7761 } 7762 } 7763 7764 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7765 log_info("gap_mitm_protection_required_for_security_level %u", level); 7766 return level > LEVEL_2; 7767 } 7768 7769 /** 7770 * @brief get current security level 7771 */ 7772 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7773 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7774 if (!connection) return LEVEL_0; 7775 return gap_security_level_for_connection(connection); 7776 } 7777 7778 /** 7779 * @brief request connection to device to 7780 * @result GAP_AUTHENTICATION_RESULT 7781 */ 7782 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7783 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7784 if (!connection){ 7785 hci_emit_security_level(con_handle, LEVEL_0); 7786 return; 7787 } 7788 7789 btstack_assert(hci_is_le_connection(connection) == false); 7790 7791 // 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) 7792 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7793 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7794 requested_level = LEVEL_4; 7795 } 7796 7797 gap_security_level_t current_level = gap_security_level(con_handle); 7798 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7799 requested_level, connection->requested_security_level, current_level); 7800 7801 // authentication active if authentication request was sent or planned level > 0 7802 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7803 if (authentication_active){ 7804 // authentication already active 7805 if (connection->requested_security_level < requested_level){ 7806 // increase requested level as new level is higher 7807 // TODO: handle re-authentication when done 7808 connection->requested_security_level = requested_level; 7809 } 7810 } else { 7811 // no request active, notify if security sufficient 7812 if (requested_level <= current_level){ 7813 hci_emit_security_level(con_handle, current_level); 7814 return; 7815 } 7816 7817 // store request 7818 connection->requested_security_level = requested_level; 7819 7820 // start to authenticate connection 7821 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7822 7823 // request remote features if not already active, also trigger hci_run 7824 hci_remote_features_query(con_handle); 7825 } 7826 } 7827 7828 /** 7829 * @brief start dedicated bonding with device. disconnect after bonding 7830 * @param device 7831 * @param request MITM protection 7832 * @result GAP_DEDICATED_BONDING_COMPLETE 7833 */ 7834 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7835 7836 // create connection state machine 7837 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7838 7839 if (!connection){ 7840 return BTSTACK_MEMORY_ALLOC_FAILED; 7841 } 7842 7843 // delete linkn key 7844 gap_drop_link_key_for_bd_addr(device); 7845 7846 // configure LEVEL_2/3, dedicated bonding 7847 connection->state = SEND_CREATE_CONNECTION; 7848 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7849 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7850 connection->bonding_flags = BONDING_DEDICATED; 7851 7852 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7853 7854 // handle: connnection failure (connection complete != ok) 7855 // handle: authentication failure 7856 // handle: disconnect on done 7857 7858 hci_run(); 7859 7860 return 0; 7861 } 7862 7863 void gap_set_local_name(const char * local_name){ 7864 hci_stack->local_name = local_name; 7865 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7866 // also update EIR if not set by user 7867 if (hci_stack->eir_data == NULL){ 7868 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7869 } 7870 hci_run(); 7871 } 7872 #endif 7873 7874 7875 #ifdef ENABLE_BLE 7876 7877 #ifdef ENABLE_LE_CENTRAL 7878 void gap_start_scan(void){ 7879 hci_stack->le_scanning_enabled = true; 7880 hci_run(); 7881 } 7882 7883 void gap_stop_scan(void){ 7884 hci_stack->le_scanning_enabled = false; 7885 hci_run(); 7886 } 7887 7888 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7889 hci_stack->le_scan_type = scan_type; 7890 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7891 hci_stack->le_scan_interval = scan_interval; 7892 hci_stack->le_scan_window = scan_window; 7893 hci_stack->le_scanning_param_update = true; 7894 hci_run(); 7895 } 7896 7897 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7898 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7899 } 7900 7901 void gap_set_scan_duplicate_filter(bool enabled){ 7902 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 7903 } 7904 7905 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7906 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7907 if (!conn){ 7908 // disallow if le connection is already outgoing 7909 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7910 log_error("le connection already active"); 7911 return ERROR_CODE_COMMAND_DISALLOWED; 7912 } 7913 7914 log_info("gap_connect: no connection exists yet, creating context"); 7915 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7916 if (!conn){ 7917 // notify client that alloc failed 7918 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7919 log_info("gap_connect: failed to alloc hci_connection_t"); 7920 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7921 } 7922 7923 // set le connecting state 7924 if (hci_is_le_connection_type(addr_type)){ 7925 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7926 } 7927 7928 conn->state = SEND_CREATE_CONNECTION; 7929 log_info("gap_connect: send create connection next"); 7930 hci_run(); 7931 return ERROR_CODE_SUCCESS; 7932 } 7933 7934 if (!hci_is_le_connection(conn) || 7935 (conn->state == SEND_CREATE_CONNECTION) || 7936 (conn->state == SENT_CREATE_CONNECTION)) { 7937 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7938 log_error("gap_connect: classic connection or connect is already being created"); 7939 return GATT_CLIENT_IN_WRONG_STATE; 7940 } 7941 7942 // check if connection was just disconnected 7943 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7944 log_info("gap_connect: send create connection (again)"); 7945 conn->state = SEND_CREATE_CONNECTION; 7946 hci_run(); 7947 return ERROR_CODE_SUCCESS; 7948 } 7949 7950 log_info("gap_connect: context exists with state %u", conn->state); 7951 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7952 hci_run(); 7953 return ERROR_CODE_SUCCESS; 7954 } 7955 7956 // @assumption: only a single outgoing LE Connection exists 7957 static hci_connection_t * gap_get_outgoing_connection(void){ 7958 btstack_linked_item_t *it; 7959 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7960 hci_connection_t * conn = (hci_connection_t *) it; 7961 if (!hci_is_le_connection(conn)) continue; 7962 switch (conn->state){ 7963 case SEND_CREATE_CONNECTION: 7964 case SENT_CREATE_CONNECTION: 7965 return conn; 7966 default: 7967 break; 7968 }; 7969 } 7970 return NULL; 7971 } 7972 7973 uint8_t gap_connect_cancel(void){ 7974 hci_connection_t * conn; 7975 switch (hci_stack->le_connecting_request){ 7976 case LE_CONNECTING_IDLE: 7977 break; 7978 case LE_CONNECTING_WHITELIST: 7979 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7980 hci_run(); 7981 break; 7982 case LE_CONNECTING_DIRECT: 7983 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7984 conn = gap_get_outgoing_connection(); 7985 if (conn == NULL){ 7986 hci_run(); 7987 } else { 7988 switch (conn->state){ 7989 case SEND_CREATE_CONNECTION: 7990 // skip sending create connection and emit event instead 7991 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7992 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7993 btstack_memory_hci_connection_free( conn ); 7994 break; 7995 case SENT_CREATE_CONNECTION: 7996 // let hci_run_general_gap_le cancel outgoing connection 7997 hci_run(); 7998 break; 7999 default: 8000 break; 8001 } 8002 } 8003 break; 8004 default: 8005 btstack_unreachable(); 8006 break; 8007 } 8008 return ERROR_CODE_SUCCESS; 8009 } 8010 8011 /** 8012 * @brief Set connection parameters for outgoing connections 8013 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8014 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8015 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8016 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8017 * @param conn_latency, default: 4 8018 * @param supervision_timeout (unit: 10ms), default: 720 ms 8019 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8020 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8021 */ 8022 8023 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8024 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8025 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8026 hci_stack->le_connection_scan_interval = conn_scan_interval; 8027 hci_stack->le_connection_scan_window = conn_scan_window; 8028 hci_stack->le_connection_interval_min = conn_interval_min; 8029 hci_stack->le_connection_interval_max = conn_interval_max; 8030 hci_stack->le_connection_latency = conn_latency; 8031 hci_stack->le_supervision_timeout = supervision_timeout; 8032 hci_stack->le_minimum_ce_length = min_ce_length; 8033 hci_stack->le_maximum_ce_length = max_ce_length; 8034 } 8035 #endif 8036 8037 /** 8038 * @brief Updates the connection parameters for a given LE connection 8039 * @param handle 8040 * @param conn_interval_min (unit: 1.25ms) 8041 * @param conn_interval_max (unit: 1.25ms) 8042 * @param conn_latency 8043 * @param supervision_timeout (unit: 10ms) 8044 * @return 0 if ok 8045 */ 8046 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8047 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8048 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8049 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8050 connection->le_conn_interval_min = conn_interval_min; 8051 connection->le_conn_interval_max = conn_interval_max; 8052 connection->le_conn_latency = conn_latency; 8053 connection->le_supervision_timeout = supervision_timeout; 8054 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8055 hci_run(); 8056 return 0; 8057 } 8058 8059 /** 8060 * @brief Request an update of the connection parameter for a given LE connection 8061 * @param handle 8062 * @param conn_interval_min (unit: 1.25ms) 8063 * @param conn_interval_max (unit: 1.25ms) 8064 * @param conn_latency 8065 * @param supervision_timeout (unit: 10ms) 8066 * @return 0 if ok 8067 */ 8068 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8069 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8070 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8071 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8072 connection->le_conn_interval_min = conn_interval_min; 8073 connection->le_conn_interval_max = conn_interval_max; 8074 connection->le_conn_latency = conn_latency; 8075 connection->le_supervision_timeout = supervision_timeout; 8076 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8077 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8078 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8079 return 0; 8080 } 8081 8082 #ifdef ENABLE_LE_PERIPHERAL 8083 8084 /** 8085 * @brief Set Advertisement Data 8086 * @param advertising_data_length 8087 * @param advertising_data (max 31 octets) 8088 * @note data is not copied, pointer has to stay valid 8089 */ 8090 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8091 hci_stack->le_advertisements_data_len = advertising_data_length; 8092 hci_stack->le_advertisements_data = advertising_data; 8093 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8094 hci_run(); 8095 } 8096 8097 /** 8098 * @brief Set Scan Response Data 8099 * @param advertising_data_length 8100 * @param advertising_data (max 31 octets) 8101 * @note data is not copied, pointer has to stay valid 8102 */ 8103 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8104 hci_stack->le_scan_response_data_len = scan_response_data_length; 8105 hci_stack->le_scan_response_data = scan_response_data; 8106 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8107 hci_run(); 8108 } 8109 8110 /** 8111 * @brief Set Advertisement Parameters 8112 * @param adv_int_min 8113 * @param adv_int_max 8114 * @param adv_type 8115 * @param direct_address_type 8116 * @param direct_address 8117 * @param channel_map 8118 * @param filter_policy 8119 * 8120 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8121 */ 8122 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8123 uint8_t direct_address_typ, bd_addr_t direct_address, 8124 uint8_t channel_map, uint8_t filter_policy) { 8125 8126 hci_stack->le_advertisements_interval_min = adv_int_min; 8127 hci_stack->le_advertisements_interval_max = adv_int_max; 8128 hci_stack->le_advertisements_type = adv_type; 8129 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8130 hci_stack->le_advertisements_channel_map = channel_map; 8131 hci_stack->le_advertisements_filter_policy = filter_policy; 8132 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8133 6); 8134 8135 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8136 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8137 hci_run(); 8138 } 8139 8140 /** 8141 * @brief Enable/Disable Advertisements 8142 * @param enabled 8143 */ 8144 void gap_advertisements_enable(int enabled){ 8145 if (enabled == 0){ 8146 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8147 } else { 8148 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8149 } 8150 hci_update_advertisements_enabled_for_current_roles(); 8151 hci_run(); 8152 } 8153 8154 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8155 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8156 btstack_linked_list_iterator_t it; 8157 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8158 while (btstack_linked_list_iterator_has_next(&it)){ 8159 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8160 if ( item->advertising_handle == advertising_handle ) { 8161 return item; 8162 } 8163 } 8164 return NULL; 8165 } 8166 8167 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8168 // find free advertisement handle 8169 uint8_t advertisement_handle; 8170 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8171 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8172 } 8173 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8174 // clear 8175 memset(storage, 0, sizeof(le_advertising_set_t)); 8176 // copy params 8177 storage->advertising_handle = advertisement_handle; 8178 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8179 // add to list 8180 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8181 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8182 *out_advertising_handle = advertisement_handle; 8183 // set tasks and start 8184 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8185 hci_run(); 8186 return ERROR_CODE_SUCCESS; 8187 } 8188 8189 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8190 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8191 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8192 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8193 // set tasks and start 8194 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8195 hci_run(); 8196 return ERROR_CODE_SUCCESS; 8197 } 8198 8199 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8200 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8201 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8202 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8203 return ERROR_CODE_SUCCESS; 8204 } 8205 8206 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8207 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8208 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8209 memcpy(advertising_set->random_address, random_address, 6); 8210 // set tasks and start 8211 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8212 hci_run(); 8213 return ERROR_CODE_SUCCESS; 8214 } 8215 8216 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8217 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8218 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8219 advertising_set->adv_data = advertising_data; 8220 advertising_set->adv_data_len = advertising_data_length; 8221 // set tasks and start 8222 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8223 hci_run(); 8224 return ERROR_CODE_SUCCESS; 8225 } 8226 8227 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){ 8228 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8229 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8230 advertising_set->scan_data = scan_response_data; 8231 advertising_set->scan_data_len = scan_response_data_length; 8232 // set tasks and start 8233 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8234 hci_run(); 8235 return ERROR_CODE_SUCCESS; 8236 } 8237 8238 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8239 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8240 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8241 advertising_set->enable_timeout = timeout; 8242 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8243 // set tasks and start 8244 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8245 hci_run(); 8246 return ERROR_CODE_SUCCESS; 8247 } 8248 8249 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8250 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8251 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8252 // set tasks and start 8253 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8254 hci_run(); 8255 return ERROR_CODE_SUCCESS; 8256 } 8257 8258 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8259 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8260 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8261 // set tasks and start 8262 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8263 hci_run(); 8264 return ERROR_CODE_SUCCESS; 8265 } 8266 8267 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8268 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8269 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8270 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8271 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8272 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8273 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8274 // set tasks and start 8275 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8276 hci_run(); 8277 return ERROR_CODE_SUCCESS; 8278 } 8279 8280 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8281 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8282 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8283 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8284 return ERROR_CODE_SUCCESS; 8285 } 8286 8287 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8288 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8289 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8290 advertising_set->periodic_data = periodic_data; 8291 advertising_set->periodic_data_len = periodic_data_length; 8292 // set tasks and start 8293 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8294 hci_run(); 8295 return ERROR_CODE_SUCCESS; 8296 } 8297 8298 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8299 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8300 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8301 // set tasks and start 8302 advertising_set->periodic_include_adi = include_adi; 8303 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8304 hci_run(); 8305 return ERROR_CODE_SUCCESS; 8306 } 8307 8308 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8309 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8310 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8311 // set tasks and start 8312 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8313 hci_run(); 8314 return ERROR_CODE_SUCCESS; 8315 } 8316 8317 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8318 hci_stack->le_past_mode = mode; 8319 hci_stack->le_past_skip = skip; 8320 hci_stack->le_past_sync_timeout = sync_timeout; 8321 hci_stack->le_past_cte_type = cte_type; 8322 hci_stack->le_past_set_default_params = true; 8323 hci_run(); 8324 return ERROR_CODE_SUCCESS; 8325 } 8326 8327 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8328 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8329 if (hci_connection == NULL){ 8330 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8331 } 8332 hci_connection->le_past_sync_handle = sync_handle; 8333 hci_connection->le_past_service_data = service_data; 8334 hci_run(); 8335 return ERROR_CODE_SUCCESS; 8336 } 8337 8338 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8339 8340 #endif 8341 8342 #endif 8343 8344 void hci_le_set_own_address_type(uint8_t own_address_type){ 8345 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8346 if (own_address_type == hci_stack->le_own_addr_type) return; 8347 hci_stack->le_own_addr_type = own_address_type; 8348 8349 #ifdef ENABLE_LE_PERIPHERAL 8350 // update advertisement parameters, too 8351 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8352 hci_run(); 8353 #endif 8354 #ifdef ENABLE_LE_CENTRAL 8355 // note: we don't update scan parameters or modify ongoing connection attempts 8356 #endif 8357 } 8358 8359 void hci_le_random_address_set(const bd_addr_t random_address){ 8360 memcpy(hci_stack->le_random_address, random_address, 6); 8361 hci_stack->le_random_address_set = true; 8362 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8363 hci_run(); 8364 } 8365 8366 #endif 8367 8368 uint8_t gap_disconnect(hci_con_handle_t handle){ 8369 hci_connection_t * conn = hci_connection_for_handle(handle); 8370 if (!conn){ 8371 hci_emit_disconnection_complete(handle, 0); 8372 return 0; 8373 } 8374 // ignore if already disconnected 8375 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8376 return 0; 8377 } 8378 conn->state = SEND_DISCONNECT; 8379 hci_run(); 8380 return 0; 8381 } 8382 8383 int gap_read_rssi(hci_con_handle_t con_handle){ 8384 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8385 if (hci_connection == NULL) return 0; 8386 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8387 hci_run(); 8388 return 1; 8389 } 8390 8391 /** 8392 * @brief Get connection type 8393 * @param con_handle 8394 * @result connection_type 8395 */ 8396 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8397 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8398 if (!conn) return GAP_CONNECTION_INVALID; 8399 switch (conn->address_type){ 8400 case BD_ADDR_TYPE_LE_PUBLIC: 8401 case BD_ADDR_TYPE_LE_RANDOM: 8402 return GAP_CONNECTION_LE; 8403 case BD_ADDR_TYPE_SCO: 8404 return GAP_CONNECTION_SCO; 8405 case BD_ADDR_TYPE_ACL: 8406 return GAP_CONNECTION_ACL; 8407 default: 8408 return GAP_CONNECTION_INVALID; 8409 } 8410 } 8411 8412 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8413 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8414 if (!conn) return HCI_ROLE_INVALID; 8415 return (hci_role_t) conn->role; 8416 } 8417 8418 8419 #ifdef ENABLE_CLASSIC 8420 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8421 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8422 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8423 conn->request_role = role; 8424 hci_run(); 8425 return ERROR_CODE_SUCCESS; 8426 } 8427 #endif 8428 8429 #ifdef ENABLE_BLE 8430 8431 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){ 8432 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8433 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8434 8435 conn->le_phy_update_all_phys = all_phys; 8436 conn->le_phy_update_tx_phys = tx_phys; 8437 conn->le_phy_update_rx_phys = rx_phys; 8438 conn->le_phy_update_phy_options = phy_options; 8439 8440 hci_run(); 8441 8442 return 0; 8443 } 8444 8445 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8446 // check if already in list 8447 btstack_linked_list_iterator_t it; 8448 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8449 while (btstack_linked_list_iterator_has_next(&it)) { 8450 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8451 if (entry->address_type != address_type) { 8452 continue; 8453 } 8454 if (memcmp(entry->address, address, 6) != 0) { 8455 continue; 8456 } 8457 // disallow if already scheduled to add 8458 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8459 return ERROR_CODE_COMMAND_DISALLOWED; 8460 } 8461 // still on controller, but scheduled to remove -> re-add 8462 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8463 return ERROR_CODE_SUCCESS; 8464 } 8465 // alloc and add to list 8466 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8467 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8468 entry->address_type = address_type; 8469 (void)memcpy(entry->address, address, 6); 8470 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8471 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8472 return ERROR_CODE_SUCCESS; 8473 } 8474 8475 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8476 btstack_linked_list_iterator_t it; 8477 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8478 while (btstack_linked_list_iterator_has_next(&it)){ 8479 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8480 if (entry->address_type != address_type) { 8481 continue; 8482 } 8483 if (memcmp(entry->address, address, 6) != 0) { 8484 continue; 8485 } 8486 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8487 // remove from controller if already present 8488 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8489 } else { 8490 // directly remove entry from whitelist 8491 btstack_linked_list_iterator_remove(&it); 8492 btstack_memory_whitelist_entry_free(entry); 8493 } 8494 return ERROR_CODE_SUCCESS; 8495 } 8496 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8497 } 8498 8499 static void hci_whitelist_clear(void){ 8500 btstack_linked_list_iterator_t it; 8501 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8502 while (btstack_linked_list_iterator_has_next(&it)){ 8503 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8504 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8505 // remove from controller if already present 8506 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8507 continue; 8508 } 8509 // directly remove entry from whitelist 8510 btstack_linked_list_iterator_remove(&it); 8511 btstack_memory_whitelist_entry_free(entry); 8512 } 8513 } 8514 8515 /** 8516 * @brief Clear Whitelist 8517 * @return 0 if ok 8518 */ 8519 uint8_t gap_whitelist_clear(void){ 8520 hci_whitelist_clear(); 8521 hci_run(); 8522 return ERROR_CODE_SUCCESS; 8523 } 8524 8525 /** 8526 * @brief Add Device to Whitelist 8527 * @param address_typ 8528 * @param address 8529 * @return 0 if ok 8530 */ 8531 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8532 uint8_t status = hci_whitelist_add(address_type, address); 8533 if (status){ 8534 return status; 8535 } 8536 hci_run(); 8537 return ERROR_CODE_SUCCESS; 8538 } 8539 8540 /** 8541 * @brief Remove Device from Whitelist 8542 * @param address_typ 8543 * @param address 8544 * @return 0 if ok 8545 */ 8546 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8547 uint8_t status = hci_whitelist_remove(address_type, address); 8548 if (status){ 8549 return status; 8550 } 8551 hci_run(); 8552 return ERROR_CODE_SUCCESS; 8553 } 8554 8555 #ifdef ENABLE_LE_CENTRAL 8556 /** 8557 * @brief Connect with Whitelist 8558 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8559 * @return - if ok 8560 */ 8561 uint8_t gap_connect_with_whitelist(void){ 8562 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8563 return ERROR_CODE_COMMAND_DISALLOWED; 8564 } 8565 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8566 hci_run(); 8567 return ERROR_CODE_SUCCESS; 8568 } 8569 8570 /** 8571 * @brief Auto Connection Establishment - Start Connecting to device 8572 * @param address_typ 8573 * @param address 8574 * @return 0 if ok 8575 */ 8576 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8577 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8578 return ERROR_CODE_COMMAND_DISALLOWED; 8579 } 8580 8581 uint8_t status = hci_whitelist_add(address_type, address); 8582 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8583 return status; 8584 } 8585 8586 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8587 8588 hci_run(); 8589 return ERROR_CODE_SUCCESS; 8590 } 8591 8592 /** 8593 * @brief Auto Connection Establishment - Stop Connecting to device 8594 * @param address_typ 8595 * @param address 8596 * @return 0 if ok 8597 */ 8598 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8599 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8600 return ERROR_CODE_COMMAND_DISALLOWED; 8601 } 8602 8603 hci_whitelist_remove(address_type, address); 8604 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8605 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8606 } 8607 hci_run(); 8608 return 0; 8609 } 8610 8611 /** 8612 * @brief Auto Connection Establishment - Stop everything 8613 * @note Convenience function to stop all active auto connection attempts 8614 */ 8615 uint8_t gap_auto_connection_stop_all(void){ 8616 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8617 return ERROR_CODE_COMMAND_DISALLOWED; 8618 } 8619 hci_whitelist_clear(); 8620 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8621 hci_run(); 8622 return ERROR_CODE_SUCCESS; 8623 } 8624 8625 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8626 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8627 if (!conn) return 0; 8628 return conn->le_connection_interval; 8629 } 8630 #endif 8631 #endif 8632 8633 #ifdef ENABLE_CLASSIC 8634 /** 8635 * @brief Set Extended Inquiry Response data 8636 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8637 * @note has to be done before stack starts up 8638 */ 8639 void gap_set_extended_inquiry_response(const uint8_t * data){ 8640 hci_stack->eir_data = data; 8641 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8642 hci_run(); 8643 } 8644 8645 /** 8646 * @brief Start GAP Classic Inquiry 8647 * @param duration in 1.28s units 8648 * @return 0 if ok 8649 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8650 */ 8651 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8652 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8653 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8654 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8655 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8656 } 8657 hci_stack->inquiry_state = duration_in_1280ms_units; 8658 hci_stack->inquiry_max_period_length = 0; 8659 hci_stack->inquiry_min_period_length = 0; 8660 hci_run(); 8661 return 0; 8662 } 8663 8664 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8665 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8666 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8667 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8668 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8669 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8670 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8671 8672 hci_stack->inquiry_state = duration; 8673 hci_stack->inquiry_max_period_length = max_period_length; 8674 hci_stack->inquiry_min_period_length = min_period_length; 8675 hci_run(); 8676 return 0; 8677 } 8678 8679 /** 8680 * @brief Stop GAP Classic Inquiry 8681 * @return 0 if ok 8682 */ 8683 int gap_inquiry_stop(void){ 8684 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8685 // emit inquiry complete event, before it even started 8686 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8687 hci_emit_event(event, sizeof(event), 1); 8688 return 0; 8689 } 8690 switch (hci_stack->inquiry_state){ 8691 case GAP_INQUIRY_STATE_ACTIVE: 8692 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8693 hci_run(); 8694 return ERROR_CODE_SUCCESS; 8695 case GAP_INQUIRY_STATE_PERIODIC: 8696 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8697 hci_run(); 8698 return ERROR_CODE_SUCCESS; 8699 default: 8700 return ERROR_CODE_COMMAND_DISALLOWED; 8701 } 8702 } 8703 8704 void gap_inquiry_set_lap(uint32_t lap){ 8705 hci_stack->inquiry_lap = lap; 8706 } 8707 8708 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8709 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8710 hci_stack->inquiry_scan_window = inquiry_scan_window; 8711 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8712 hci_run(); 8713 } 8714 8715 8716 /** 8717 * @brief Remote Name Request 8718 * @param addr 8719 * @param page_scan_repetition_mode 8720 * @param clock_offset only used when bit 15 is set 8721 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8722 */ 8723 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8724 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8725 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8726 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8727 hci_stack->remote_name_clock_offset = clock_offset; 8728 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8729 hci_run(); 8730 return 0; 8731 } 8732 8733 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8734 hci_stack->gap_pairing_state = state; 8735 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8736 hci_run(); 8737 return 0; 8738 } 8739 8740 /** 8741 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8742 * @param addr 8743 * @param pin_data 8744 * @param pin_len 8745 * @return 0 if ok 8746 */ 8747 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8748 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8749 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8750 hci_stack->gap_pairing_pin_len = pin_len; 8751 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8752 } 8753 8754 /** 8755 * @brief Legacy Pairing Pin Code Response 8756 * @param addr 8757 * @param pin 8758 * @return 0 if ok 8759 */ 8760 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8761 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8762 } 8763 8764 /** 8765 * @brief Abort Legacy Pairing 8766 * @param addr 8767 * @param pin 8768 * @return 0 if ok 8769 */ 8770 int gap_pin_code_negative(bd_addr_t addr){ 8771 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8772 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8773 } 8774 8775 /** 8776 * @brief SSP Passkey Response 8777 * @param addr 8778 * @param passkey 8779 * @return 0 if ok 8780 */ 8781 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8782 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8783 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8784 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8785 } 8786 8787 /** 8788 * @brief Abort SSP Passkey Entry/Pairing 8789 * @param addr 8790 * @param pin 8791 * @return 0 if ok 8792 */ 8793 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8794 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8795 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8796 } 8797 8798 /** 8799 * @brief Accept SSP Numeric Comparison 8800 * @param addr 8801 * @param passkey 8802 * @return 0 if ok 8803 */ 8804 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8805 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8806 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8807 } 8808 8809 /** 8810 * @brief Abort SSP Numeric Comparison/Pairing 8811 * @param addr 8812 * @param pin 8813 * @return 0 if ok 8814 */ 8815 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8816 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8817 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8818 } 8819 8820 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8821 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8822 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8823 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8824 connectionSetAuthenticationFlags(conn, flag); 8825 hci_run(); 8826 return ERROR_CODE_SUCCESS; 8827 } 8828 #endif 8829 8830 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8831 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8832 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8833 } 8834 8835 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8836 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8837 } 8838 #endif 8839 8840 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8841 /** 8842 * @brief Report Remote OOB Data 8843 * @param bd_addr 8844 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8845 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8846 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8847 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8848 */ 8849 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){ 8850 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8851 if (connection == NULL) { 8852 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8853 } 8854 connection->classic_oob_c_192 = c_192; 8855 connection->classic_oob_r_192 = r_192; 8856 8857 // ignore P-256 if not supported by us 8858 if (hci_stack->secure_connections_active){ 8859 connection->classic_oob_c_256 = c_256; 8860 connection->classic_oob_r_256 = r_256; 8861 } 8862 8863 return ERROR_CODE_SUCCESS; 8864 } 8865 /** 8866 * @brief Generate new OOB data 8867 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8868 */ 8869 void gap_ssp_generate_oob_data(void){ 8870 hci_stack->classic_read_local_oob_data = true; 8871 hci_run(); 8872 } 8873 8874 #endif 8875 8876 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8877 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8878 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8879 if (connection == NULL) { 8880 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8881 } 8882 8883 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8884 connection->link_key_type = type; 8885 8886 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8887 } 8888 8889 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8890 /** 8891 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8892 * @param inquiry_mode see bluetooth_defines.h 8893 */ 8894 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8895 hci_stack->inquiry_mode = inquiry_mode; 8896 } 8897 8898 /** 8899 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8900 */ 8901 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8902 hci_stack->sco_voice_setting = voice_setting; 8903 } 8904 8905 /** 8906 * @brief Get SCO Voice Setting 8907 * @return current voice setting 8908 */ 8909 uint16_t hci_get_sco_voice_setting(void){ 8910 return hci_stack->sco_voice_setting; 8911 } 8912 8913 static int hci_have_usb_transport(void){ 8914 if (!hci_stack->hci_transport) return 0; 8915 const char * transport_name = hci_stack->hci_transport->name; 8916 if (!transport_name) return 0; 8917 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8918 } 8919 8920 /** @brief Get SCO packet length for current SCO Voice setting 8921 * @note Using SCO packets of the exact length is required for USB transfer 8922 * @return Length of SCO packets in bytes (not audio frames) 8923 */ 8924 uint16_t hci_get_sco_packet_length(void){ 8925 uint16_t sco_packet_length = 0; 8926 8927 #ifdef ENABLE_SCO_OVER_HCI 8928 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8929 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8930 8931 if (hci_have_usb_transport()){ 8932 // see Core Spec for H2 USB Transfer. 8933 // 3 byte SCO header + 24 bytes per connection 8934 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8935 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8936 } else { 8937 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8938 sco_packet_length = 3 + 60 * multiplier; 8939 // assert that it still fits inside an SCO buffer 8940 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8941 sco_packet_length = 3 + 60; 8942 } 8943 } 8944 #endif 8945 8946 #ifdef HAVE_SCO_TRANSPORT 8947 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8948 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8949 sco_packet_length = 3 + 60 * multiplier; 8950 #endif 8951 return sco_packet_length; 8952 } 8953 8954 /** 8955 * @brief Sets the master/slave policy 8956 * @param policy (0: attempt to become master, 1: let connecting device decide) 8957 */ 8958 void hci_set_master_slave_policy(uint8_t policy){ 8959 hci_stack->master_slave_policy = policy; 8960 } 8961 8962 #endif 8963 8964 HCI_STATE hci_get_state(void){ 8965 return hci_stack->state; 8966 } 8967 8968 #ifdef ENABLE_CLASSIC 8969 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8970 hci_stack->gap_classic_accept_callback = accept_callback; 8971 } 8972 #endif 8973 8974 /** 8975 * @brief Set callback for Bluetooth Hardware Error 8976 */ 8977 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8978 hci_stack->hardware_error_callback = fn; 8979 } 8980 8981 void hci_disconnect_all(void){ 8982 btstack_linked_list_iterator_t it; 8983 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8984 while (btstack_linked_list_iterator_has_next(&it)){ 8985 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8986 if (con->state == SENT_DISCONNECT) continue; 8987 con->state = SEND_DISCONNECT; 8988 } 8989 hci_run(); 8990 } 8991 8992 uint16_t hci_get_manufacturer(void){ 8993 return hci_stack->manufacturer; 8994 } 8995 8996 #ifdef ENABLE_BLE 8997 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8998 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8999 if (!hci_con) return NULL; 9000 return &hci_con->sm_connection; 9001 } 9002 9003 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9004 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9005 #endif 9006 9007 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9008 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9009 if (hci_connection == NULL) return 0; 9010 if (hci_is_le_connection(hci_connection)){ 9011 #ifdef ENABLE_BLE 9012 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9013 if (sm_conn->sm_connection_encrypted) { 9014 return sm_conn->sm_actual_encryption_key_size; 9015 } 9016 #endif 9017 } else { 9018 #ifdef ENABLE_CLASSIC 9019 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9020 return hci_connection->encryption_key_size; 9021 } 9022 #endif 9023 } 9024 return 0; 9025 } 9026 9027 bool gap_authenticated(hci_con_handle_t con_handle){ 9028 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9029 if (hci_connection == NULL) return false; 9030 9031 switch (hci_connection->address_type){ 9032 #ifdef ENABLE_BLE 9033 case BD_ADDR_TYPE_LE_PUBLIC: 9034 case BD_ADDR_TYPE_LE_RANDOM: 9035 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9036 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9037 #endif 9038 #ifdef ENABLE_CLASSIC 9039 case BD_ADDR_TYPE_SCO: 9040 case BD_ADDR_TYPE_ACL: 9041 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9042 #endif 9043 default: 9044 return false; 9045 } 9046 } 9047 9048 bool gap_secure_connection(hci_con_handle_t con_handle){ 9049 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9050 if (hci_connection == NULL) return 0; 9051 9052 switch (hci_connection->address_type){ 9053 #ifdef ENABLE_BLE 9054 case BD_ADDR_TYPE_LE_PUBLIC: 9055 case BD_ADDR_TYPE_LE_RANDOM: 9056 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9057 return hci_connection->sm_connection.sm_connection_sc != 0; 9058 #endif 9059 #ifdef ENABLE_CLASSIC 9060 case BD_ADDR_TYPE_SCO: 9061 case BD_ADDR_TYPE_ACL: 9062 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9063 #endif 9064 default: 9065 return false; 9066 } 9067 } 9068 9069 bool gap_bonded(hci_con_handle_t con_handle){ 9070 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9071 if (hci_connection == NULL) return 0; 9072 9073 #ifdef ENABLE_CLASSIC 9074 link_key_t link_key; 9075 link_key_type_t link_key_type; 9076 #endif 9077 switch (hci_connection->address_type){ 9078 #ifdef ENABLE_BLE 9079 case BD_ADDR_TYPE_LE_PUBLIC: 9080 case BD_ADDR_TYPE_LE_RANDOM: 9081 return hci_connection->sm_connection.sm_le_db_index >= 0; 9082 #endif 9083 #ifdef ENABLE_CLASSIC 9084 case BD_ADDR_TYPE_SCO: 9085 case BD_ADDR_TYPE_ACL: 9086 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9087 #endif 9088 default: 9089 return false; 9090 } 9091 } 9092 9093 #ifdef ENABLE_BLE 9094 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9095 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9096 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9097 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9098 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9099 return sm_conn->sm_connection_authorization_state; 9100 } 9101 #endif 9102 9103 #ifdef ENABLE_CLASSIC 9104 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){ 9105 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9106 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9107 conn->sniff_min_interval = sniff_min_interval; 9108 conn->sniff_max_interval = sniff_max_interval; 9109 conn->sniff_attempt = sniff_attempt; 9110 conn->sniff_timeout = sniff_timeout; 9111 hci_run(); 9112 return 0; 9113 } 9114 9115 /** 9116 * @brief Exit Sniff mode 9117 * @param con_handle 9118 @ @return 0 if ok 9119 */ 9120 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9121 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9122 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9123 conn->sniff_min_interval = 0xffff; 9124 hci_run(); 9125 return 0; 9126 } 9127 9128 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){ 9129 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9130 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9131 conn->sniff_subrating_max_latency = max_latency; 9132 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9133 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9134 hci_run(); 9135 return ERROR_CODE_SUCCESS; 9136 } 9137 9138 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){ 9139 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9140 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9141 conn->qos_service_type = service_type; 9142 conn->qos_token_rate = token_rate; 9143 conn->qos_peak_bandwidth = peak_bandwidth; 9144 conn->qos_latency = latency; 9145 conn->qos_delay_variation = delay_variation; 9146 hci_run(); 9147 return ERROR_CODE_SUCCESS; 9148 } 9149 9150 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9151 hci_stack->new_page_scan_interval = page_scan_interval; 9152 hci_stack->new_page_scan_window = page_scan_window; 9153 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9154 hci_run(); 9155 } 9156 9157 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9158 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9159 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9160 hci_run(); 9161 } 9162 9163 void gap_set_page_timeout(uint16_t page_timeout){ 9164 hci_stack->page_timeout = page_timeout; 9165 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9166 hci_run(); 9167 } 9168 9169 #endif 9170 9171 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9172 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9173 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9174 if (le_device_db_index >= le_device_db_max_count()) return; 9175 uint8_t offset = le_device_db_index >> 3; 9176 uint8_t mask = 1 << (le_device_db_index & 7); 9177 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9178 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9179 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9180 // note: go back to remove entries, otherwise, a remove + add will skip the add 9181 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9182 } 9183 } 9184 9185 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9186 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9187 if (le_device_db_index >= le_device_db_max_count()) return; 9188 uint8_t offset = le_device_db_index >> 3; 9189 uint8_t mask = 1 << (le_device_db_index & 7); 9190 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9191 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9192 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9193 } 9194 } 9195 9196 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9197 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9198 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9199 } 9200 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9201 // restart le resolving list update 9202 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9203 } 9204 return ERROR_CODE_SUCCESS; 9205 } 9206 9207 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9208 hci_stack->le_privacy_mode = privacy_mode; 9209 } 9210 #endif 9211 9212 #ifdef ENABLE_BLE 9213 #ifdef ENABLE_LE_CENTRAL 9214 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9215 9216 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9217 // check if already in list 9218 btstack_linked_list_iterator_t it; 9219 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9220 while (btstack_linked_list_iterator_has_next(&it)) { 9221 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9222 if (entry->sid != advertising_sid) { 9223 continue; 9224 } 9225 if (entry->address_type != address_type) { 9226 continue; 9227 } 9228 if (memcmp(entry->address, address, 6) != 0) { 9229 continue; 9230 } 9231 // disallow if already scheduled to add 9232 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9233 return ERROR_CODE_COMMAND_DISALLOWED; 9234 } 9235 // still on controller, but scheduled to remove -> re-add 9236 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9237 return ERROR_CODE_SUCCESS; 9238 } 9239 // alloc and add to list 9240 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9241 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9242 entry->sid = advertising_sid; 9243 entry->address_type = address_type; 9244 (void)memcpy(entry->address, address, 6); 9245 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9246 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9247 return ERROR_CODE_SUCCESS; 9248 } 9249 9250 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9251 btstack_linked_list_iterator_t it; 9252 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9253 while (btstack_linked_list_iterator_has_next(&it)){ 9254 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9255 if (entry->sid != advertising_sid) { 9256 continue; 9257 } 9258 if (entry->address_type != address_type) { 9259 continue; 9260 } 9261 if (memcmp(entry->address, address, 6) != 0) { 9262 continue; 9263 } 9264 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9265 // remove from controller if already present 9266 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9267 } else { 9268 // directly remove entry from whitelist 9269 btstack_linked_list_iterator_remove(&it); 9270 btstack_memory_periodic_advertiser_list_entry_free(entry); 9271 } 9272 return ERROR_CODE_SUCCESS; 9273 } 9274 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9275 } 9276 9277 static void hci_periodic_advertiser_list_clear(void){ 9278 btstack_linked_list_iterator_t it; 9279 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9280 while (btstack_linked_list_iterator_has_next(&it)){ 9281 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9282 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9283 // remove from controller if already present 9284 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9285 continue; 9286 } 9287 // directly remove entry from whitelist 9288 btstack_linked_list_iterator_remove(&it); 9289 btstack_memory_periodic_advertiser_list_entry_free(entry); 9290 } 9291 } 9292 9293 uint8_t gap_periodic_advertiser_list_clear(void){ 9294 hci_periodic_advertiser_list_clear(); 9295 hci_run(); 9296 return ERROR_CODE_SUCCESS; 9297 } 9298 9299 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9300 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9301 if (status){ 9302 return status; 9303 } 9304 hci_run(); 9305 return ERROR_CODE_SUCCESS; 9306 } 9307 9308 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9309 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9310 if (status){ 9311 return status; 9312 } 9313 hci_run(); 9314 return ERROR_CODE_SUCCESS; 9315 } 9316 9317 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9318 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9319 // abort if already active 9320 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9321 return ERROR_CODE_COMMAND_DISALLOWED; 9322 } 9323 // store request 9324 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9325 hci_stack->le_periodic_sync_options = options; 9326 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9327 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9328 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9329 hci_stack->le_periodic_sync_skip = skip; 9330 hci_stack->le_periodic_sync_timeout = sync_timeout; 9331 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9332 9333 hci_run(); 9334 return ERROR_CODE_SUCCESS; 9335 } 9336 9337 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9338 // abort if not requested 9339 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9340 return ERROR_CODE_COMMAND_DISALLOWED; 9341 } 9342 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9343 hci_run(); 9344 return ERROR_CODE_SUCCESS; 9345 } 9346 9347 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9348 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9349 return ERROR_CODE_COMMAND_DISALLOWED; 9350 } 9351 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9352 hci_run(); 9353 return ERROR_CODE_SUCCESS; 9354 } 9355 9356 #endif 9357 #endif 9358 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9359 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 9360 hci_iso_stream_state_t state) { 9361 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9362 if (iso_stream == NULL){ 9363 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9364 } else { 9365 iso_stream->iso_type = iso_type; 9366 iso_stream->state = state; 9367 iso_stream->con_handle = con_handle; 9368 iso_stream->group_id = group_id; 9369 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9370 return ERROR_CODE_SUCCESS; 9371 } 9372 } 9373 9374 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9375 btstack_linked_list_iterator_t it; 9376 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9377 while (btstack_linked_list_iterator_has_next(&it)){ 9378 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9379 if (iso_stream->con_handle == con_handle ) { 9380 return iso_stream; 9381 } 9382 } 9383 return NULL; 9384 } 9385 9386 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9387 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->con_handle, iso_stream->group_id); 9388 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9389 btstack_memory_hci_iso_stream_free(iso_stream); 9390 } 9391 9392 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9393 btstack_linked_list_iterator_t it; 9394 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9395 while (btstack_linked_list_iterator_has_next(&it)){ 9396 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9397 if ((iso_stream->group_id == group_id) && 9398 (iso_stream->iso_type == iso_type)){ 9399 btstack_linked_list_iterator_remove(&it); 9400 btstack_memory_hci_iso_stream_free(iso_stream); 9401 } 9402 } 9403 } 9404 9405 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9406 btstack_linked_list_iterator_t it; 9407 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9408 while (btstack_linked_list_iterator_has_next(&it)){ 9409 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9410 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9411 (iso_stream->group_id == group_id)){ 9412 btstack_linked_list_iterator_remove(&it); 9413 btstack_memory_hci_iso_stream_free(iso_stream); 9414 } 9415 } 9416 } 9417 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9418 btstack_linked_list_iterator_t it; 9419 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9420 while (btstack_linked_list_iterator_has_next(&it)){ 9421 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9422 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9423 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9424 } 9425 } 9426 } 9427 9428 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9429 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9430 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9431 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9432 return (sdu_len_offset + 2 + sdu_len) == size; 9433 } 9434 9435 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9436 if (hci_stack->iso_packet_handler == NULL) { 9437 return; 9438 } 9439 if (size < 4) { 9440 return; 9441 } 9442 9443 // parse header 9444 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9445 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9446 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9447 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9448 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9449 9450 // assert packet is complete 9451 if ((iso_data_len + 4u) != size){ 9452 return; 9453 } 9454 9455 if ((pb_flag & 0x01) == 0){ 9456 if (pb_flag == 0x02){ 9457 // The ISO_Data_Load field contains a header and a complete SDU. 9458 if (hci_iso_sdu_complete(packet, size)) { 9459 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9460 } 9461 } else { 9462 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9463 if (iso_stream == NULL){ 9464 return; 9465 } 9466 if (size > HCI_ISO_PAYLOAD_SIZE){ 9467 return; 9468 } 9469 memcpy(iso_stream->reassembly_buffer, packet, size); 9470 // fix pb_flag 9471 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9472 iso_stream->reassembly_pos = size; 9473 } 9474 } else { 9475 // iso_data_load contains continuation or last fragment of an SDU 9476 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9477 if (ts_flag != 0){ 9478 return; 9479 } 9480 // append fragment 9481 if (iso_stream == NULL){ 9482 return; 9483 } 9484 if (iso_stream->reassembly_pos == 0){ 9485 return; 9486 } 9487 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9488 // reset reassembly buffer 9489 iso_stream->reassembly_pos = 0; 9490 return; 9491 } 9492 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9493 iso_stream->reassembly_pos += iso_data_len; 9494 9495 // deliver if last fragment and SDU complete 9496 if (pb_flag == 0x03){ 9497 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9498 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9499 } 9500 iso_stream->reassembly_pos = 0; 9501 } 9502 } 9503 } 9504 9505 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9506 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9507 uint16_t pos = 0; 9508 event[pos++] = HCI_EVENT_META_GAP; 9509 event[pos++] = 4 + (2 * big->num_bis); 9510 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9511 event[pos++] = status; 9512 event[pos++] = big->big_handle; 9513 event[pos++] = big->num_bis; 9514 uint8_t i; 9515 for (i=0;i<big->num_bis;i++){ 9516 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9517 pos += 2; 9518 } 9519 hci_emit_event(event, pos, 0); 9520 } 9521 9522 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9523 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9524 uint16_t pos = 0; 9525 event[pos++] = HCI_EVENT_META_GAP; 9526 event[pos++] = 4 + (2 * cig->num_cis); 9527 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9528 event[pos++] = status; 9529 event[pos++] = cig->cig_id; 9530 event[pos++] = cig->num_cis; 9531 uint8_t i; 9532 for (i=0;i<cig->num_cis;i++){ 9533 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9534 pos += 2; 9535 } 9536 hci_emit_event(event, pos, 0); 9537 } 9538 9539 static void 9540 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status) { 9541 uint8_t event [7]; 9542 uint16_t pos = 0; 9543 event[pos++] = HCI_EVENT_META_GAP; 9544 event[pos++] = 5; 9545 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9546 event[pos++] = status; 9547 event[pos++] = cig_id; 9548 little_endian_store_16(event, pos, cis_con_handle); 9549 pos += 2; 9550 hci_emit_event(event, pos, 0); 9551 } 9552 9553 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9554 uint8_t event [4]; 9555 uint16_t pos = 0; 9556 event[pos++] = HCI_EVENT_META_GAP; 9557 event[pos++] = 2; 9558 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9559 event[pos++] = big->big_handle; 9560 hci_emit_event(event, pos, 0); 9561 } 9562 9563 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9564 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9565 uint16_t pos = 0; 9566 event[pos++] = HCI_EVENT_META_GAP; 9567 event[pos++] = 4; 9568 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9569 event[pos++] = status; 9570 event[pos++] = big_sync->big_handle; 9571 event[pos++] = big_sync->num_bis; 9572 uint8_t i; 9573 for (i=0;i<big_sync->num_bis;i++){ 9574 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9575 pos += 2; 9576 } 9577 hci_emit_event(event, pos, 0); 9578 } 9579 9580 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9581 uint8_t event [4]; 9582 uint16_t pos = 0; 9583 event[pos++] = HCI_EVENT_META_GAP; 9584 event[pos++] = 2; 9585 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9586 event[pos++] = big_handle; 9587 hci_emit_event(event, pos, 0); 9588 } 9589 9590 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9591 uint8_t event[6]; 9592 uint16_t pos = 0; 9593 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9594 event[pos++] = sizeof(event) - 2; 9595 event[pos++] = big->big_handle; 9596 event[pos++] = bis_index; 9597 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9598 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9599 } 9600 9601 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9602 uint8_t event[4]; 9603 uint16_t pos = 0; 9604 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9605 event[pos++] = sizeof(event) - 2; 9606 little_endian_store_16(event, pos, cis_con_handle); 9607 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9608 } 9609 9610 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9611 btstack_linked_list_iterator_t it; 9612 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9613 while (btstack_linked_list_iterator_has_next(&it)){ 9614 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9615 if ( big->big_handle == big_handle ) { 9616 return big; 9617 } 9618 } 9619 return NULL; 9620 } 9621 9622 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9623 btstack_linked_list_iterator_t it; 9624 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9625 while (btstack_linked_list_iterator_has_next(&it)){ 9626 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9627 if ( big_sync->big_handle == big_handle ) { 9628 return big_sync; 9629 } 9630 } 9631 return NULL; 9632 } 9633 9634 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9635 hci_stack->iso_packets_to_queue = num_packets; 9636 } 9637 9638 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9639 btstack_linked_list_iterator_t it; 9640 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9641 while (btstack_linked_list_iterator_has_next(&it)){ 9642 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9643 if ( cig->cig_id == cig_id ) { 9644 return cig; 9645 } 9646 } 9647 return NULL; 9648 } 9649 9650 static void hci_iso_notify_can_send_now(void){ 9651 9652 // BIG 9653 9654 btstack_linked_list_iterator_t it; 9655 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9656 while (btstack_linked_list_iterator_has_next(&it)){ 9657 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9658 // track number completed packet timestamps 9659 if (big->num_completed_timestamp_current_valid){ 9660 big->num_completed_timestamp_current_valid = false; 9661 if (big->num_completed_timestamp_previous_valid){ 9662 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9663 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9664 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9665 big->num_completed_timestamp_previous_ms); 9666 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9667 // to catch up, skip packet on all BIS 9668 uint8_t i; 9669 for (i=0;i<big->num_bis;i++){ 9670 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9671 if (iso_stream){ 9672 iso_stream->num_packets_to_skip++; 9673 } 9674 } 9675 } 9676 } 9677 big->num_completed_timestamp_previous_valid = true; 9678 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9679 } 9680 9681 if (big->can_send_now_requested){ 9682 // check if no outgoing iso packets pending and no can send now have to be emitted 9683 uint8_t i; 9684 bool can_send = true; 9685 uint8_t num_iso_queued_minimum = 0; 9686 for (i=0;i<big->num_bis;i++){ 9687 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9688 if (iso_stream == NULL) continue; 9689 // handle case where individual ISO packet was sent too late: 9690 // for each additionally queued packet, a new one needs to get skipped 9691 if (i==0){ 9692 num_iso_queued_minimum = iso_stream->num_packets_sent; 9693 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9694 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9695 iso_stream->num_packets_to_skip += num_packets_to_skip; 9696 iso_stream->num_packets_sent -= num_packets_to_skip; 9697 } 9698 // check if we can send now 9699 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9700 can_send = false; 9701 break; 9702 } 9703 } 9704 if (can_send){ 9705 // propagate can send now to individual streams 9706 big->can_send_now_requested = false; 9707 for (i=0;i<big->num_bis;i++){ 9708 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9709 iso_stream->emit_ready_to_send = true; 9710 } 9711 } 9712 } 9713 } 9714 9715 if (hci_stack->hci_packet_buffer_reserved) return; 9716 9717 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9718 while (btstack_linked_list_iterator_has_next(&it)){ 9719 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9720 // report bis ready 9721 uint8_t i; 9722 for (i=0;i<big->num_bis;i++){ 9723 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9724 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9725 iso_stream->emit_ready_to_send = false; 9726 hci_emit_bis_can_send_now(big, i); 9727 break; 9728 } 9729 } 9730 } 9731 9732 // CIS 9733 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9734 while (btstack_linked_list_iterator_has_next(&it)) { 9735 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9736 if ((iso_stream->can_send_now_requested) && 9737 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9738 iso_stream->can_send_now_requested = false; 9739 hci_emit_cis_can_send_now(iso_stream->con_handle); 9740 } 9741 } 9742 } 9743 9744 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9745 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9746 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9747 } 9748 if (big_params->num_bis == 0){ 9749 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9750 } 9751 if (big_params->num_bis > MAX_NR_BIS){ 9752 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9753 } 9754 9755 // reserve ISO Streams 9756 uint8_t i; 9757 uint8_t status = ERROR_CODE_SUCCESS; 9758 for (i=0;i<big_params->num_bis;i++){ 9759 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_CON_HANDLE_INVALID, big_params->big_handle, 9760 HCI_ISO_STREAM_STATE_REQUESTED); 9761 if (status != ERROR_CODE_SUCCESS) { 9762 break; 9763 } 9764 } 9765 9766 // free structs on error 9767 if (status != ERROR_CODE_SUCCESS){ 9768 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9769 return status; 9770 } 9771 9772 le_audio_big_t * big = storage; 9773 big->big_handle = big_params->big_handle; 9774 big->params = big_params; 9775 big->state = LE_AUDIO_BIG_STATE_CREATE; 9776 big->num_bis = big_params->num_bis; 9777 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9778 9779 hci_run(); 9780 9781 return ERROR_CODE_SUCCESS; 9782 } 9783 9784 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9785 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9786 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9787 } 9788 if (big_sync_params->num_bis == 0){ 9789 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9790 } 9791 if (big_sync_params->num_bis > MAX_NR_BIS){ 9792 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9793 } 9794 9795 le_audio_big_sync_t * big_sync = storage; 9796 big_sync->big_handle = big_sync_params->big_handle; 9797 big_sync->params = big_sync_params; 9798 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9799 big_sync->num_bis = big_sync_params->num_bis; 9800 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9801 9802 hci_run(); 9803 9804 return ERROR_CODE_SUCCESS; 9805 } 9806 9807 uint8_t gap_big_terminate(uint8_t big_handle){ 9808 le_audio_big_t * big = hci_big_for_handle(big_handle); 9809 if (big == NULL){ 9810 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9811 } 9812 switch (big->state){ 9813 case LE_AUDIO_BIG_STATE_CREATE: 9814 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9815 hci_emit_big_terminated(big); 9816 break; 9817 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9818 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9819 break; 9820 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9821 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9822 case LE_AUDIO_BIG_STATE_ACTIVE: 9823 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9824 hci_run(); 9825 break; 9826 default: 9827 return ERROR_CODE_COMMAND_DISALLOWED; 9828 } 9829 return ERROR_CODE_SUCCESS; 9830 } 9831 9832 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9833 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9834 if (big_sync == NULL){ 9835 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9836 } 9837 switch (big_sync->state){ 9838 case LE_AUDIO_BIG_STATE_CREATE: 9839 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9840 hci_emit_big_sync_stopped(big_handle); 9841 break; 9842 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9843 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9844 break; 9845 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9846 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9847 case LE_AUDIO_BIG_STATE_ACTIVE: 9848 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9849 hci_run(); 9850 break; 9851 default: 9852 return ERROR_CODE_COMMAND_DISALLOWED; 9853 } 9854 return ERROR_CODE_SUCCESS; 9855 } 9856 9857 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9858 le_audio_big_t * big = hci_big_for_handle(big_handle); 9859 if (big == NULL){ 9860 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9861 } 9862 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9863 return ERROR_CODE_COMMAND_DISALLOWED; 9864 } 9865 big->can_send_now_requested = true; 9866 hci_iso_notify_can_send_now(); 9867 return ERROR_CODE_SUCCESS; 9868 } 9869 9870 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9871 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9872 if (iso_stream == NULL){ 9873 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9874 } 9875 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9876 return ERROR_CODE_COMMAND_DISALLOWED; 9877 } 9878 iso_stream->can_send_now_requested = true; 9879 hci_iso_notify_can_send_now(); 9880 return ERROR_CODE_SUCCESS; 9881 } 9882 9883 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9884 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9885 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9886 } 9887 if (cig_params->num_cis == 0){ 9888 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9889 } 9890 if (cig_params->num_cis > MAX_NR_BIS){ 9891 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9892 } 9893 9894 // reserve ISO Streams 9895 uint8_t i; 9896 uint8_t status = ERROR_CODE_SUCCESS; 9897 for (i=0;i<cig_params->num_cis;i++){ 9898 status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_CON_HANDLE_INVALID, cig_params->cig_id, 9899 HCI_ISO_STREAM_STATE_REQUESTED); 9900 if (status != ERROR_CODE_SUCCESS) { 9901 break; 9902 } 9903 } 9904 9905 // free structs on error 9906 if (status != ERROR_CODE_SUCCESS){ 9907 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 9908 return status; 9909 } 9910 9911 le_audio_cig_t * cig = storage; 9912 cig->cig_id = cig_params->cig_id; 9913 cig->num_cis = cig_params->num_cis; 9914 cig->params = cig_params; 9915 cig->state = LE_AUDIO_CIG_STATE_CREATE; 9916 for (i=0;i<cig->num_cis;i++){ 9917 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 9918 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 9919 cig->cis_setup_active[i] = false; 9920 cig->cis_established[i] = false; 9921 } 9922 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 9923 9924 hci_run(); 9925 9926 return ERROR_CODE_SUCCESS; 9927 } 9928 9929 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 9930 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 9931 if (cig == NULL){ 9932 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9933 } 9934 9935 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 9936 return ERROR_CODE_COMMAND_DISALLOWED; 9937 } 9938 9939 // store ACL Connection Handles 9940 uint8_t i; 9941 for (i=0;i<cig->num_cis;i++){ 9942 // check that all con handles exit 9943 hci_con_handle_t cis_handle = cis_con_handles[i]; 9944 uint8_t j; 9945 bool found = false; 9946 for (j=0;j<cig->num_cis;j++){ 9947 if (cig->cis_con_handles[j] == cis_handle){ 9948 cig->acl_con_handles[j] = acl_con_handles[j]; 9949 found = true; 9950 break; 9951 } 9952 } 9953 if (!found){ 9954 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9955 } 9956 } 9957 9958 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 9959 hci_run(); 9960 9961 return ERROR_CODE_SUCCESS; 9962 } 9963 9964 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_con_handle, hci_iso_stream_state_t state){ 9965 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9966 if (iso_stream != NULL){ 9967 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9968 } 9969 9970 uint8_t status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, cis_con_handle, 9971 HCI_ISO_GROUP_ID_INVALID, state); 9972 if (status == ERROR_CODE_SUCCESS){ 9973 return status; 9974 } 9975 9976 hci_run(); 9977 return ERROR_CODE_SUCCESS; 9978 } 9979 9980 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 9981 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 9982 } 9983 9984 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 9985 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 9986 } 9987 9988 9989 #endif 9990 #endif /* ENABLE_BLE */ 9991 9992 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9993 void hci_setup_test_connections_fuzz(void){ 9994 hci_connection_t * conn; 9995 9996 // default address: 66:55:44:33:00:01 9997 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9998 9999 // setup Controller info 10000 hci_stack->num_cmd_packets = 255; 10001 hci_stack->acl_packets_total_num = 255; 10002 10003 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10004 addr[5] = 0x01; 10005 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10006 conn->con_handle = addr[5]; 10007 conn->role = HCI_ROLE_SLAVE; 10008 conn->state = RECEIVED_CONNECTION_REQUEST; 10009 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10010 10011 // setup incoming Classic SCO connection with con handle 0x0002 10012 addr[5] = 0x02; 10013 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10014 conn->con_handle = addr[5]; 10015 conn->role = HCI_ROLE_SLAVE; 10016 conn->state = RECEIVED_CONNECTION_REQUEST; 10017 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10018 10019 // setup ready Classic ACL connection with con handle 0x0003 10020 addr[5] = 0x03; 10021 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10022 conn->con_handle = addr[5]; 10023 conn->role = HCI_ROLE_SLAVE; 10024 conn->state = OPEN; 10025 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10026 10027 // setup ready Classic SCO connection with con handle 0x0004 10028 addr[5] = 0x04; 10029 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10030 conn->con_handle = addr[5]; 10031 conn->role = HCI_ROLE_SLAVE; 10032 conn->state = OPEN; 10033 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10034 10035 // setup ready LE ACL connection with con handle 0x005 and public address 10036 addr[5] = 0x05; 10037 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 10038 conn->con_handle = addr[5]; 10039 conn->role = HCI_ROLE_SLAVE; 10040 conn->state = OPEN; 10041 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10042 conn->sm_connection.sm_connection_encrypted = 1; 10043 } 10044 10045 void hci_free_connections_fuzz(void){ 10046 btstack_linked_list_iterator_t it; 10047 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10048 while (btstack_linked_list_iterator_has_next(&it)){ 10049 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10050 btstack_linked_list_iterator_remove(&it); 10051 btstack_memory_hci_connection_free(con); 10052 } 10053 } 10054 void hci_simulate_working_fuzz(void){ 10055 hci_stack->le_scanning_param_update = false; 10056 hci_init_done(); 10057 hci_stack->num_cmd_packets = 255; 10058 } 10059 #endif 10060