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