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