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