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_le_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 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 bool 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 bool 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 false; 1467 #endif 1468 } 1469 1470 bool 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 false; 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_WORKAROUND) 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_le_meta_get_subevent_code(hci_event)){ 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 hci_handle_le_connection_complete_event(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_le_connection(); 3321 } 3322 3323 // free connection if cancelled by user (request == IDLE) 3324 if ((conn != NULL) && (hci_stack->le_connecting_request == LE_CONNECTING_IDLE)){ 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, it was an outgoing connection 3337 // note: no hci_connection_t object exists yet for connect with whitelist 3338 3339 // if resolvable private addresses are used without enhanced connection complete event, 3340 // we will get a random addr in the connection complete event for an outgoing connection. 3341 // To avoid duplicate connection structs, fetch outgoing connection 3342 if (hci_subevent_ge) 3343 conn = gap_get_outgoing_le_connection(); 3344 // if successful, use (potentially) identity address, but also track identity 3345 // note: we don't update hci le subevent connection complete 3346 if (conn != NULL){ 3347 gap_event[7] = conn->address_type; 3348 reverse_bd_addr(conn->address, &gap_event[8]); 3349 } 3350 3351 // we're done with it 3352 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3353 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3354 #endif 3355 } else { 3356 #ifdef ENABLE_LE_PERIPHERAL 3357 // if we're slave, it was an incoming connection, advertisements have stopped 3358 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3359 #endif 3360 } 3361 3362 // LE connections are auto-accepted, so just create a connection if there isn't one already 3363 if (!conn){ 3364 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3365 } 3366 3367 // no memory, sorry. 3368 if (!conn){ 3369 return; 3370 } 3371 3372 conn->state = OPEN; 3373 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3374 conn->le_connection_interval = conn_interval; 3375 3376 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3377 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3378 3379 #ifdef ENABLE_LE_PERIPHERAL 3380 if (role == HCI_ROLE_SLAVE){ 3381 hci_update_advertisements_enabled_for_current_roles(); 3382 } 3383 #endif 3384 3385 // init unenhanced att bearer mtu 3386 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3387 conn->att_connection.mtu_exchanged = false; 3388 3389 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3390 3391 // restart timer 3392 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3393 // btstack_run_loop_add_timer(&conn->timeout); 3394 3395 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3396 3397 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3398 hci_emit_event(gap_event, sizeof(gap_event), 1); 3399 3400 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3401 hci_emit_nr_connections_changed(); 3402 } 3403 #endif 3404 3405 #ifdef ENABLE_CLASSIC 3406 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){ 3407 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3408 // LEVEL_4 is tested by l2cap 3409 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3410 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3411 if (level >= LEVEL_3){ 3412 // MITM not possible without keyboard or display 3413 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3414 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3415 3416 // MITM possible if one side has keyboard and the other has keyboard or display 3417 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3418 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3419 3420 // MITM not possible if one side has only display and other side has no keyboard 3421 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3422 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3423 } 3424 // LEVEL 2 requires SSP, which is a given 3425 return true; 3426 } 3427 3428 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3429 // get requested security level 3430 gap_security_level_t requested_security_level = conn->requested_security_level; 3431 if (hci_stack->gap_secure_connections_only_mode){ 3432 requested_security_level = LEVEL_4; 3433 } 3434 3435 // assess security: LEVEL 4 requires SC 3436 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3437 if ((requested_security_level == LEVEL_4) && 3438 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3439 !hci_remote_sc_enabled(conn)){ 3440 log_info("Level 4 required, but SC not supported -> abort"); 3441 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3442 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3443 return; 3444 } 3445 3446 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3447 // - GAP/MOD/NBON/BV-02-C 3448 // - GAP/DM/NBON/BV-01-C 3449 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3450 switch (conn->io_cap_response_auth_req){ 3451 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3452 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3453 if (hci_stack->bondable == false){ 3454 log_info("Dedicated vs. non-bondable -> abort"); 3455 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3456 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3457 return; 3458 } 3459 default: 3460 break; 3461 } 3462 } 3463 3464 // assess security based on io capabilities 3465 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3466 // responder: fully validate io caps of both sides as well as OOB data 3467 bool security_possible = false; 3468 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3469 3470 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3471 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3472 // so we merge the OOB data availability 3473 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3474 if (conn->classic_oob_c_192 != NULL){ 3475 have_oob_data |= 1; 3476 } 3477 if (conn->classic_oob_c_256 != NULL){ 3478 have_oob_data |= 2; 3479 } 3480 // for up to Level 3, either P-192 as well as P-256 will do 3481 // 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 3482 // if remote does not SC, we should not receive P-256 data either 3483 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3484 security_possible = true; 3485 } 3486 // for Level 4, P-256 is needed 3487 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3488 security_possible = true; 3489 } 3490 #endif 3491 3492 if (security_possible == false){ 3493 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3494 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3495 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3496 return; 3497 } 3498 } else { 3499 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3500 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3501 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3502 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3503 log_info("Level 3+ required, but no input/output -> abort"); 3504 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3505 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3506 return; 3507 } 3508 #endif 3509 #endif 3510 } 3511 3512 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3513 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3514 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3515 } else { 3516 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3517 } 3518 #endif 3519 } 3520 3521 #endif 3522 3523 static void event_handler(uint8_t *packet, uint16_t size){ 3524 3525 uint16_t event_length = packet[1]; 3526 3527 // assert packet is complete 3528 if (size != (event_length + 2u)){ 3529 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3530 return; 3531 } 3532 3533 hci_con_handle_t handle; 3534 hci_connection_t * conn; 3535 int i; 3536 3537 #ifdef ENABLE_CLASSIC 3538 hci_link_type_t link_type; 3539 bd_addr_t addr; 3540 bd_addr_type_t addr_type; 3541 #endif 3542 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3543 hci_iso_stream_t * iso_stream; 3544 le_audio_big_t * big; 3545 le_audio_big_sync_t * big_sync; 3546 #endif 3547 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3548 btstack_linked_list_iterator_t it; 3549 #endif 3550 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3551 uint8_t advertising_handle; 3552 #endif 3553 3554 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3555 3556 switch (hci_event_packet_get_type(packet)) { 3557 3558 case HCI_EVENT_COMMAND_COMPLETE: 3559 handle_command_complete_event(packet, size); 3560 break; 3561 3562 case HCI_EVENT_COMMAND_STATUS: 3563 handle_command_status_event(packet, size); 3564 break; 3565 3566 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3567 if (size < 3) return; 3568 uint16_t num_handles = packet[2]; 3569 if (size != (3u + num_handles * 4u)) return; 3570 #ifdef ENABLE_CLASSIC 3571 bool notify_sco = false; 3572 #endif 3573 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3574 bool notify_iso = false; 3575 #endif 3576 uint16_t offset = 3; 3577 for (i=0; i<num_handles;i++){ 3578 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3579 offset += 2u; 3580 uint16_t num_packets = little_endian_read_16(packet, offset); 3581 offset += 2u; 3582 3583 conn = hci_connection_for_handle(handle); 3584 if (conn != NULL) { 3585 3586 if (conn->num_packets_sent >= num_packets) { 3587 conn->num_packets_sent -= num_packets; 3588 } else { 3589 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3590 conn->num_packets_sent = 0; 3591 } 3592 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3593 #ifdef ENABLE_CLASSIC 3594 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3595 notify_sco = true; 3596 } 3597 #endif 3598 } 3599 3600 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3601 hci_controller_dump_packets(); 3602 #endif 3603 3604 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3605 if (conn == NULL){ 3606 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3607 if (iso_stream != NULL){ 3608 if (iso_stream->num_packets_sent >= num_packets) { 3609 iso_stream->num_packets_sent -= num_packets; 3610 } else { 3611 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3612 iso_stream->num_packets_sent = 0; 3613 } 3614 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3615 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3616 if (big != NULL){ 3617 big->num_completed_timestamp_current_valid = true; 3618 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3619 } 3620 } 3621 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3622 num_packets, handle, iso_stream->num_packets_sent); 3623 notify_iso = true; 3624 } 3625 } 3626 #endif 3627 } 3628 3629 #ifdef ENABLE_CLASSIC 3630 if (notify_sco){ 3631 hci_notify_if_sco_can_send_now(); 3632 } 3633 #endif 3634 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3635 if (notify_iso){ 3636 hci_iso_notify_can_send_now(); 3637 } 3638 #endif 3639 break; 3640 } 3641 3642 #ifdef ENABLE_CLASSIC 3643 case HCI_EVENT_FLUSH_OCCURRED: 3644 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3645 handle = hci_event_flush_occurred_get_handle(packet); 3646 conn = hci_connection_for_handle(handle); 3647 if (conn) { 3648 log_info("Flush occurred, disconnect 0x%04x", handle); 3649 conn->state = SEND_DISCONNECT; 3650 } 3651 break; 3652 3653 case HCI_EVENT_INQUIRY_COMPLETE: 3654 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3655 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3656 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3657 hci_emit_event(event, sizeof(event), 1); 3658 } 3659 break; 3660 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3661 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3662 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3663 } 3664 break; 3665 case HCI_EVENT_CONNECTION_REQUEST: 3666 reverse_bd_addr(&packet[2], addr); 3667 link_type = (hci_link_type_t) packet[11]; 3668 3669 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3670 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3671 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3672 bd_addr_copy(hci_stack->decline_addr, addr); 3673 break; 3674 } 3675 3676 if (hci_stack->gap_classic_accept_callback != NULL){ 3677 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3678 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3679 bd_addr_copy(hci_stack->decline_addr, addr); 3680 break; 3681 } 3682 } 3683 3684 // TODO: eval COD 8-10 3685 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3686 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3687 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3688 if (!conn) { 3689 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3690 } 3691 if (!conn) { 3692 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3693 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3694 bd_addr_copy(hci_stack->decline_addr, addr); 3695 hci_run(); 3696 // avoid event to higher layer 3697 return; 3698 } 3699 conn->state = RECEIVED_CONNECTION_REQUEST; 3700 // store info about eSCO 3701 if (link_type == HCI_LINK_TYPE_ESCO){ 3702 conn->remote_supported_features[0] |= 1; 3703 } 3704 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3705 if (addr_type == BD_ADDR_TYPE_SCO){ 3706 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3707 // ACL exists unless fuzzing 3708 if (acl_conn != NULL) { 3709 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3710 } 3711 } 3712 hci_run(); 3713 break; 3714 3715 case HCI_EVENT_CONNECTION_COMPLETE: 3716 // Connection management 3717 reverse_bd_addr(&packet[5], addr); 3718 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3719 addr_type = BD_ADDR_TYPE_ACL; 3720 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3721 if (conn) { 3722 switch (conn->state){ 3723 // expected states 3724 case ACCEPTED_CONNECTION_REQUEST: 3725 case SENT_CREATE_CONNECTION: 3726 break; 3727 // unexpected state -> ignore 3728 default: 3729 // don't forward event to app 3730 return; 3731 } 3732 if (!packet[2]){ 3733 conn->state = OPEN; 3734 conn->con_handle = little_endian_read_16(packet, 3); 3735 3736 // trigger write supervision timeout if we're master 3737 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3738 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3739 } 3740 3741 // trigger write automatic flush timeout 3742 if (hci_stack->automatic_flush_timeout != 0){ 3743 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3744 } 3745 3746 // restart timer 3747 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3748 btstack_run_loop_add_timer(&conn->timeout); 3749 3750 // trigger remote features for dedicated bonding 3751 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3752 hci_trigger_remote_features_for_connection(conn); 3753 } 3754 3755 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3756 3757 hci_emit_nr_connections_changed(); 3758 } else { 3759 // connection failed 3760 hci_handle_connection_failed(conn, packet[2]); 3761 } 3762 } 3763 break; 3764 3765 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3766 reverse_bd_addr(&packet[5], addr); 3767 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3768 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3769 3770 // SCO exists unless fuzzer 3771 if (conn == NULL) break; 3772 3773 if (packet[2] != ERROR_CODE_SUCCESS){ 3774 // connection failed, remove entry 3775 hci_handle_connection_failed(conn, packet[2]); 3776 break; 3777 } 3778 3779 conn->state = OPEN; 3780 conn->con_handle = little_endian_read_16(packet, 3); 3781 3782 // update sco payload length for eSCO connections 3783 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3784 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3785 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3786 } 3787 3788 #ifdef ENABLE_SCO_OVER_HCI 3789 // update SCO 3790 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3791 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3792 } 3793 // trigger can send now 3794 if (hci_have_usb_transport()){ 3795 hci_stack->sco_can_send_now = true; 3796 } 3797 3798 // setup implict sco flow control 3799 conn->sco_tx_ready = 0; 3800 conn->sco_tx_active = 0; 3801 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3802 3803 #endif 3804 #ifdef HAVE_SCO_TRANSPORT 3805 // configure sco transport 3806 if (hci_stack->sco_transport != NULL){ 3807 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3808 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3809 } 3810 #endif 3811 break; 3812 3813 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3814 handle = little_endian_read_16(packet, 3); 3815 conn = hci_connection_for_handle(handle); 3816 if (!conn) break; 3817 if (!packet[2]){ 3818 const uint8_t * features = &packet[5]; 3819 hci_handle_remote_features_page_0(conn, features); 3820 3821 // read extended features if possible 3822 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3823 && ((conn->remote_supported_features[0] & 2) != 0)) { 3824 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3825 break; 3826 } 3827 } 3828 hci_handle_remote_features_received(conn); 3829 break; 3830 3831 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3832 handle = little_endian_read_16(packet, 3); 3833 conn = hci_connection_for_handle(handle); 3834 if (!conn) break; 3835 // status = ok, page = 1 3836 if (!packet[2]) { 3837 uint8_t page_number = packet[5]; 3838 uint8_t maximum_page_number = packet[6]; 3839 const uint8_t * features = &packet[7]; 3840 bool done = false; 3841 switch (page_number){ 3842 case 1: 3843 hci_handle_remote_features_page_1(conn, features); 3844 if (maximum_page_number >= 2){ 3845 // get Secure Connections (Controller) from Page 2 if available 3846 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3847 } else { 3848 // otherwise, assume SC (Controller) == SC (Host) 3849 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3850 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3851 } 3852 done = true; 3853 } 3854 break; 3855 case 2: 3856 hci_handle_remote_features_page_2(conn, features); 3857 done = true; 3858 break; 3859 default: 3860 break; 3861 } 3862 if (!done) break; 3863 } 3864 hci_handle_remote_features_received(conn); 3865 break; 3866 3867 case HCI_EVENT_LINK_KEY_REQUEST: 3868 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3869 hci_event_link_key_request_get_bd_addr(packet, addr); 3870 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3871 if (!conn) break; 3872 3873 // lookup link key in db if not cached 3874 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3875 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3876 } 3877 3878 // response sent by hci_run() 3879 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3880 #endif 3881 break; 3882 3883 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3884 hci_event_link_key_request_get_bd_addr(packet, addr); 3885 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3886 if (!conn) break; 3887 3888 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3889 3890 // CVE-2020-26555: ignore NULL link key 3891 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3892 if (btstack_is_null(&packet[8], 16)) break; 3893 3894 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3895 // Change Connection Encryption keeps link key type 3896 if (link_key_type != CHANGED_COMBINATION_KEY){ 3897 conn->link_key_type = link_key_type; 3898 } 3899 3900 // cache link key. link keys stored in little-endian format for legacy reasons 3901 memcpy(&conn->link_key, &packet[8], 16); 3902 3903 // only store link key: 3904 // - if bondable enabled 3905 if (hci_stack->bondable == false) break; 3906 // - if security level sufficient 3907 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3908 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3909 break; 3910 } 3911 3912 case HCI_EVENT_PIN_CODE_REQUEST: 3913 hci_event_pin_code_request_get_bd_addr(packet, addr); 3914 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3915 if (!conn) break; 3916 3917 hci_pairing_started(conn, false); 3918 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3919 if (!hci_stack->bondable ){ 3920 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3921 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3922 hci_run(); 3923 return; 3924 } 3925 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3926 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3927 log_info("Level 4 required, but SC not supported -> abort"); 3928 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3929 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3930 hci_run(); 3931 return; 3932 } 3933 break; 3934 3935 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3936 hci_event_io_capability_response_get_bd_addr(packet, addr); 3937 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3938 if (!conn) break; 3939 3940 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3941 hci_pairing_started(conn, true); 3942 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3943 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3944 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3945 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3946 #endif 3947 break; 3948 3949 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3950 hci_event_io_capability_response_get_bd_addr(packet, addr); 3951 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3952 if (!conn) break; 3953 3954 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3955 hci_connection_timestamp(conn); 3956 hci_pairing_started(conn, true); 3957 break; 3958 3959 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3960 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3961 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3962 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3963 if (!conn) break; 3964 3965 hci_connection_timestamp(conn); 3966 3967 hci_pairing_started(conn, true); 3968 3969 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3970 break; 3971 #endif 3972 3973 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3974 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3975 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3976 if (!conn) break; 3977 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3978 if (hci_stack->ssp_auto_accept){ 3979 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3980 }; 3981 } else { 3982 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3983 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3984 // don't forward event to app 3985 hci_run(); 3986 return; 3987 } 3988 break; 3989 3990 case HCI_EVENT_USER_PASSKEY_REQUEST: 3991 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3992 if (hci_stack->ssp_auto_accept){ 3993 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3994 }; 3995 break; 3996 3997 case HCI_EVENT_MODE_CHANGE: 3998 handle = hci_event_mode_change_get_handle(packet); 3999 conn = hci_connection_for_handle(handle); 4000 if (!conn) break; 4001 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4002 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4003 break; 4004 #endif 4005 4006 case HCI_EVENT_ENCRYPTION_CHANGE: 4007 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4008 handle = hci_event_encryption_change_get_connection_handle(packet); 4009 conn = hci_connection_for_handle(handle); 4010 if (!conn) break; 4011 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4012 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4013 if (encryption_enabled){ 4014 if (hci_is_le_connection(conn)){ 4015 // For LE, we accept connection as encrypted 4016 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4017 } 4018 #ifdef ENABLE_CLASSIC 4019 else { 4020 4021 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4022 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4023 bool connected_uses_aes_ccm = encryption_enabled == 2; 4024 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4025 #ifdef ENABLE_TESTING_SUPPORT 4026 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4027 // - GAP/SEC/SEM/BI-31-C 4028 // - GAP/SEC/SEM/BI-32-C 4029 // - GAP/SEC/SEM/BI-33-C 4030 4031 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4032 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4033 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4034 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4035 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4036 } 4037 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4038 conn->link_key_type, new_link_key_type); 4039 conn->link_key_type = new_link_key_type; 4040 #else 4041 log_info("SC during pairing, but only E0 now -> abort"); 4042 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4043 break; 4044 #endif 4045 } 4046 4047 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4048 if (connected_uses_aes_ccm){ 4049 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4050 } 4051 4052 #ifdef ENABLE_TESTING_SUPPORT 4053 // work around for issue with PTS dongle 4054 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4055 #endif 4056 // validate encryption key size 4057 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4058 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4059 // already got encryption key size 4060 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4061 } else { 4062 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4063 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4064 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4065 } else { 4066 // if not, pretend everything is perfect 4067 hci_handle_read_encryption_key_size_complete(conn, 16); 4068 } 4069 } 4070 } 4071 #endif 4072 } else { 4073 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4074 } 4075 } else { 4076 #ifdef ENABLE_CLASSIC 4077 if (!hci_is_le_connection(conn)){ 4078 uint8_t status = hci_event_encryption_change_get_status(packet); 4079 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4080 conn->bonding_flags &= ~BONDING_DEDICATED; 4081 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4082 conn->bonding_status = status; 4083 } 4084 // trigger security update -> level 0 4085 hci_handle_mutual_authentication_completed(conn); 4086 } 4087 #endif 4088 } 4089 4090 break; 4091 4092 #ifdef ENABLE_CLASSIC 4093 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4094 handle = hci_event_authentication_complete_get_connection_handle(packet); 4095 conn = hci_connection_for_handle(handle); 4096 if (!conn) break; 4097 4098 // clear authentication active flag 4099 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4100 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4101 4102 // authenticated only if auth status == 0 4103 if (hci_event_authentication_complete_get_status(packet) == 0){ 4104 // authenticated 4105 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4106 4107 // If not already encrypted, start encryption 4108 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4109 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4110 break; 4111 } 4112 } 4113 4114 // emit updated security level (will be 0 if not authenticated) 4115 hci_handle_mutual_authentication_completed(conn); 4116 break; 4117 4118 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4119 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4120 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4121 if (!conn) break; 4122 4123 // treat successfully paired connection as authenticated 4124 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4125 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4126 } 4127 4128 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4129 break; 4130 #endif 4131 4132 // HCI_EVENT_DISCONNECTION_COMPLETE 4133 // has been split, to first notify stack before shutting connection down 4134 // see end of function, too. 4135 case HCI_EVENT_DISCONNECTION_COMPLETE: 4136 if (packet[2]) break; // status != 0 4137 handle = little_endian_read_16(packet, 3); 4138 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4139 if (hci_stack->acl_fragmentation_total_size > 0u) { 4140 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4141 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4142 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4143 hci_stack->acl_fragmentation_total_size = 0; 4144 hci_stack->acl_fragmentation_pos = 0; 4145 if (release_buffer){ 4146 hci_release_packet_buffer(); 4147 } 4148 } 4149 } 4150 4151 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4152 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4153 if (hci_stack->iso_fragmentation_total_size > 0u) { 4154 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4155 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4156 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4157 hci_stack->iso_fragmentation_total_size = 0; 4158 hci_stack->iso_fragmentation_pos = 0; 4159 if (release_buffer){ 4160 hci_release_packet_buffer(); 4161 } 4162 } 4163 } 4164 4165 // finalize iso stream for CIS handle 4166 iso_stream = hci_iso_stream_for_con_handle(handle); 4167 if (iso_stream != NULL){ 4168 hci_iso_stream_finalize(iso_stream); 4169 break; 4170 } 4171 4172 // finalize iso stream(s) for ACL handle 4173 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4174 while (btstack_linked_list_iterator_has_next(&it)){ 4175 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4176 if (iso_stream->acl_handle == handle ) { 4177 hci_iso_stream_finalize(iso_stream); 4178 } 4179 } 4180 #endif 4181 4182 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4183 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4184 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4185 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4186 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4187 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4188 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4189 hci_stack->num_cmd_packets = 1; 4190 } 4191 #endif 4192 4193 conn = hci_connection_for_handle(handle); 4194 if (!conn) break; 4195 #ifdef ENABLE_CLASSIC 4196 // pairing failed if it was ongoing 4197 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4198 #endif 4199 4200 // emit dedicatd bonding event 4201 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4202 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4203 } 4204 4205 // mark connection for shutdown, stop timers, reset state 4206 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4207 hci_connection_stop_timer(conn); 4208 hci_connection_init(conn); 4209 4210 #ifdef ENABLE_BLE 4211 #ifdef ENABLE_LE_PERIPHERAL 4212 // re-enable advertisements for le connections if active 4213 if (hci_is_le_connection(conn)){ 4214 hci_update_advertisements_enabled_for_current_roles(); 4215 } 4216 #endif 4217 #endif 4218 break; 4219 4220 case HCI_EVENT_HARDWARE_ERROR: 4221 log_error("Hardware Error: 0x%02x", packet[2]); 4222 if (hci_stack->hardware_error_callback){ 4223 (*hci_stack->hardware_error_callback)(packet[2]); 4224 } else { 4225 // if no special requests, just reboot stack 4226 hci_power_control_off(); 4227 hci_power_control_on(); 4228 } 4229 break; 4230 4231 #ifdef ENABLE_CLASSIC 4232 case HCI_EVENT_ROLE_CHANGE: 4233 if (packet[2]) break; // status != 0 4234 reverse_bd_addr(&packet[3], addr); 4235 addr_type = BD_ADDR_TYPE_ACL; 4236 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4237 if (!conn) break; 4238 conn->role = (hci_role_t) packet[9]; 4239 break; 4240 #endif 4241 4242 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4243 // release packet buffer only for asynchronous transport and if there are not further fragments 4244 if (hci_transport_synchronous()) { 4245 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4246 return; // instead of break: to avoid re-entering hci_run() 4247 } 4248 hci_stack->acl_fragmentation_tx_active = 0; 4249 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4250 hci_stack->iso_fragmentation_tx_active = 0; 4251 if (hci_stack->iso_fragmentation_total_size) break; 4252 #endif 4253 if (hci_stack->acl_fragmentation_total_size) break; 4254 hci_release_packet_buffer(); 4255 4256 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4257 hci_iso_notify_can_send_now(); 4258 #endif 4259 // L2CAP receives this event via the hci_emit_event below 4260 4261 #ifdef ENABLE_CLASSIC 4262 // For SCO, we do the can_send_now_check here 4263 hci_notify_if_sco_can_send_now(); 4264 #endif 4265 break; 4266 4267 #ifdef ENABLE_CLASSIC 4268 case HCI_EVENT_SCO_CAN_SEND_NOW: 4269 // For SCO, we do the can_send_now_check here 4270 hci_stack->sco_can_send_now = true; 4271 hci_notify_if_sco_can_send_now(); 4272 return; 4273 4274 // explode inquriy results for easier consumption 4275 case HCI_EVENT_INQUIRY_RESULT: 4276 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4277 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4278 gap_inquiry_explode(packet, size); 4279 break; 4280 #endif 4281 4282 #ifdef ENABLE_BLE 4283 case HCI_EVENT_LE_META: 4284 switch (packet[2]){ 4285 #ifdef ENABLE_LE_CENTRAL 4286 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4287 if (!hci_stack->le_scanning_enabled) break; 4288 le_handle_advertisement_report(packet, size); 4289 break; 4290 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4291 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4292 if (!hci_stack->le_scanning_enabled) break; 4293 le_handle_extended_advertisement_report(packet, size); 4294 break; 4295 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4296 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4297 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4298 break; 4299 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4300 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4301 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4302 while (btstack_linked_list_iterator_has_next(&it)) { 4303 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4304 if (advertising_set->advertising_handle == advertising_handle){ 4305 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4306 } 4307 } 4308 break; 4309 #endif 4310 #endif 4311 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4312 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4313 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4314 hci_handle_le_connection_complete_event(packet); 4315 break; 4316 4317 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4318 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4319 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4320 conn = hci_connection_for_handle(handle); 4321 if (!conn) break; 4322 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4323 break; 4324 4325 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4326 // connection 4327 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4328 conn = hci_connection_for_handle(handle); 4329 if (conn) { 4330 // read arguments 4331 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4332 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4333 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4334 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4335 4336 // validate against current connection parameter range 4337 le_connection_parameter_range_t existing_range; 4338 gap_get_connection_parameter_range(&existing_range); 4339 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4340 if (update_parameter){ 4341 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4342 conn->le_conn_interval_min = le_conn_interval_min; 4343 conn->le_conn_interval_max = le_conn_interval_max; 4344 conn->le_conn_latency = le_conn_latency; 4345 conn->le_supervision_timeout = le_supervision_timeout; 4346 } else { 4347 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4348 } 4349 } 4350 break; 4351 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4352 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4353 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4354 conn = hci_connection_for_handle(handle); 4355 if (conn) { 4356 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4357 } 4358 break; 4359 #endif 4360 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4361 case HCI_SUBEVENT_LE_CIS_REQUEST: 4362 // incoming CIS request, allocate iso stream object and cache metadata 4363 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4364 hci_subevent_le_cis_request_get_cig_id(packet), 4365 hci_subevent_le_cis_request_get_cis_id(packet)); 4366 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4367 if (iso_stream != NULL){ 4368 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4369 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4370 } 4371 break; 4372 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4373 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4374 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4375 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4376 iso_stream = hci_iso_stream_for_con_handle(handle); 4377 btstack_assert(iso_stream != NULL); 4378 // track connection info 4379 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4380 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4381 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4382 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4383 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4384 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4385 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4386 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4387 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4388 // CIS Accept by Peripheral 4389 if (status == ERROR_CODE_SUCCESS){ 4390 if (iso_stream->max_sdu_p_to_c > 0){ 4391 // we're peripheral and we will send data 4392 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4393 } else { 4394 // we're peripheral and we will only receive data 4395 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4396 } 4397 } else { 4398 hci_cis_handle_created(iso_stream, status); 4399 } 4400 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4401 } else { 4402 // CIG Setup by Central 4403 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4404 btstack_assert(cig != NULL); 4405 // update iso stream state 4406 if (status == ERROR_CODE_SUCCESS){ 4407 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4408 } else { 4409 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4410 } 4411 // update cig state 4412 uint8_t i; 4413 for (i=0;i<cig->num_cis;i++){ 4414 if (cig->cis_con_handles[i] == handle){ 4415 cig->cis_setup_active[i] = false; 4416 if (status == ERROR_CODE_SUCCESS){ 4417 cig->cis_established[i] = true; 4418 } else { 4419 hci_cis_handle_created(iso_stream, status); 4420 } 4421 } 4422 } 4423 4424 // trigger iso path setup if complete 4425 bool cis_setup_active = false; 4426 for (i=0;i<cig->num_cis;i++){ 4427 cis_setup_active |= cig->cis_setup_active[i]; 4428 } 4429 if (cis_setup_active == false){ 4430 cig->state_vars.next_cis = 0; 4431 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4432 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4433 } 4434 } 4435 } 4436 break; 4437 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4438 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4439 big = hci_big_for_handle(packet[4]); 4440 if (big != NULL){ 4441 uint8_t status = packet[3]; 4442 if (status == ERROR_CODE_SUCCESS){ 4443 // store bis_con_handles and trigger iso path setup 4444 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4445 uint8_t i; 4446 for (i=0;i<num_bis;i++){ 4447 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4448 big->bis_con_handles[i] = bis_handle; 4449 // assign bis handle 4450 btstack_linked_list_iterator_t it; 4451 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4452 while (btstack_linked_list_iterator_has_next(&it)){ 4453 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4454 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4455 (iso_stream->group_id == big->big_handle)){ 4456 iso_stream->cis_handle = bis_handle; 4457 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4458 break; 4459 } 4460 } 4461 } 4462 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4463 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4464 big->state_vars.next_bis = 0; 4465 } 4466 } else { 4467 // create BIG failed or has been stopped by us 4468 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4469 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4470 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4471 hci_emit_big_created(big, status); 4472 } else { 4473 hci_emit_big_terminated(big); 4474 } 4475 } 4476 } 4477 break; 4478 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4479 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4480 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4481 if (big != NULL){ 4482 // finalize associated ISO streams 4483 btstack_linked_list_iterator_t it; 4484 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4485 while (btstack_linked_list_iterator_has_next(&it)){ 4486 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4487 if (iso_stream->group_id == big->big_handle){ 4488 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4489 btstack_linked_list_iterator_remove(&it); 4490 btstack_memory_hci_iso_stream_free(iso_stream); 4491 } 4492 } 4493 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4494 switch (big->state){ 4495 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4496 hci_emit_big_created(big, big->state_vars.status); 4497 break; 4498 default: 4499 hci_emit_big_terminated(big); 4500 break; 4501 } 4502 } 4503 break; 4504 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4505 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4506 big_sync = hci_big_sync_for_handle(packet[4]); 4507 if (big_sync != NULL){ 4508 uint8_t status = packet[3]; 4509 uint8_t big_handle = packet[4]; 4510 if (status == ERROR_CODE_SUCCESS){ 4511 // store bis_con_handles and trigger iso path setup 4512 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4513 uint8_t i; 4514 for (i=0;i<num_bis;i++){ 4515 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4516 big_sync->bis_con_handles[i] = bis_handle; 4517 // setup iso_stream_t 4518 btstack_linked_list_iterator_t it; 4519 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4520 while (btstack_linked_list_iterator_has_next(&it)){ 4521 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4522 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4523 (iso_stream->group_id == big_sync->big_handle)){ 4524 iso_stream->cis_handle = bis_handle; 4525 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4526 break; 4527 } 4528 } 4529 } 4530 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4531 // trigger iso path setup 4532 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4533 big_sync->state_vars.next_bis = 0; 4534 } 4535 } else { 4536 // create BIG Sync failed or has been stopped by us 4537 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4538 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4539 hci_emit_big_sync_created(big_sync, status); 4540 } else { 4541 hci_emit_big_sync_stopped(big_handle); 4542 } 4543 } 4544 } 4545 break; 4546 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4547 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4548 big_sync = hci_big_sync_for_handle(packet[4]); 4549 if (big_sync != NULL){ 4550 uint8_t big_handle = packet[4]; 4551 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4552 hci_emit_big_sync_stopped(big_handle); 4553 } 4554 break; 4555 #endif 4556 default: 4557 break; 4558 } 4559 break; 4560 #endif 4561 case HCI_EVENT_VENDOR_SPECIFIC: 4562 // Vendor specific commands often create vendor specific event instead of num completed packets 4563 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4564 switch (hci_stack->manufacturer){ 4565 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4566 hci_stack->num_cmd_packets = 1; 4567 break; 4568 default: 4569 break; 4570 } 4571 break; 4572 default: 4573 break; 4574 } 4575 4576 handle_event_for_current_stack_state(packet, size); 4577 4578 // notify upper stack 4579 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4580 4581 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4582 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4583 handle = little_endian_read_16(packet, 3); 4584 hci_connection_t * aConn = hci_connection_for_handle(handle); 4585 // discard connection if app did not trigger a reconnect in the event handler 4586 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4587 hci_shutdown_connection(aConn); 4588 } 4589 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4590 hci_controller_dump_packets(); 4591 #endif 4592 } 4593 4594 // execute main loop 4595 hci_run(); 4596 } 4597 4598 #ifdef ENABLE_CLASSIC 4599 4600 static void sco_handler(uint8_t * packet, uint16_t size){ 4601 // lookup connection struct 4602 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4603 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4604 if (!conn) return; 4605 4606 #ifdef ENABLE_SCO_OVER_HCI 4607 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4608 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4609 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4610 packet[2] = 0x3c; 4611 memmove(&packet[3], &packet[23], 63); 4612 size = 63; 4613 } 4614 } 4615 4616 if (hci_have_usb_transport()){ 4617 // Nothing to do 4618 } else { 4619 // 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); 4620 if (hci_stack->synchronous_flow_control_enabled == 0){ 4621 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4622 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4623 if (conn->sco_tx_active == 0){ 4624 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4625 conn->sco_tx_active = 1; 4626 conn->sco_tx_ready = max_sco_packets; 4627 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4628 hci_notify_if_sco_can_send_now(); 4629 } 4630 } else { 4631 if (conn->sco_tx_ready < max_sco_packets){ 4632 conn->sco_tx_ready++; 4633 } 4634 hci_notify_if_sco_can_send_now(); 4635 } 4636 } 4637 } 4638 #endif 4639 4640 // deliver to app 4641 if (hci_stack->sco_packet_handler) { 4642 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4643 } 4644 4645 #ifdef HAVE_SCO_TRANSPORT 4646 // We can send one packet for each received packet 4647 conn->sco_tx_ready++; 4648 hci_notify_if_sco_can_send_now(); 4649 #endif 4650 4651 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4652 conn->num_packets_completed++; 4653 hci_stack->host_completed_packets = 1; 4654 hci_run(); 4655 #endif 4656 } 4657 #endif 4658 4659 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4660 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4661 // propagate ISO packets received as ACL 4662 hci_iso_stream_t * iso_stream = NULL; 4663 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4664 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4665 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4666 if (iso_stream != NULL){ 4667 packet_type = HCI_ISO_DATA_PACKET; 4668 } 4669 } 4670 #endif 4671 4672 hci_dump_packet(packet_type, 1, packet, size); 4673 switch (packet_type) { 4674 case HCI_EVENT_PACKET: 4675 event_handler(packet, size); 4676 break; 4677 case HCI_ACL_DATA_PACKET: 4678 acl_handler(packet, size); 4679 break; 4680 #ifdef ENABLE_CLASSIC 4681 case HCI_SCO_DATA_PACKET: 4682 sco_handler(packet, size); 4683 break; 4684 #endif 4685 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4686 case HCI_ISO_DATA_PACKET: 4687 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4688 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4689 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4690 } 4691 hci_iso_packet_handler(iso_stream, packet, size); 4692 break; 4693 #endif 4694 default: 4695 break; 4696 } 4697 } 4698 4699 /** 4700 * @brief Add event packet handler. 4701 */ 4702 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4703 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4704 } 4705 4706 /** 4707 * @brief Remove event packet handler. 4708 */ 4709 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4710 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4711 } 4712 4713 /** Register HCI packet handlers */ 4714 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4715 hci_stack->acl_packet_handler = handler; 4716 } 4717 4718 #ifdef ENABLE_CLASSIC 4719 /** 4720 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4721 */ 4722 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4723 hci_stack->sco_packet_handler = handler; 4724 } 4725 #endif 4726 4727 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4728 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4729 hci_stack->iso_packet_handler = handler; 4730 } 4731 #endif 4732 4733 static void hci_state_reset(void){ 4734 // no connections yet 4735 hci_stack->connections = NULL; 4736 4737 // keep discoverable/connectable as this has been requested by the client(s) 4738 // hci_stack->discoverable = 0; 4739 // hci_stack->connectable = 0; 4740 // hci_stack->bondable = 1; 4741 // hci_stack->own_addr_type = 0; 4742 4743 // buffer is free 4744 hci_stack->hci_packet_buffer_reserved = false; 4745 4746 // no pending cmds 4747 hci_stack->decline_reason = 0; 4748 4749 hci_stack->secure_connections_active = false; 4750 4751 #ifdef ENABLE_CLASSIC 4752 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4753 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4754 4755 hci_stack->gap_tasks_classic = 4756 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4757 GAP_TASK_SET_CLASS_OF_DEVICE | 4758 GAP_TASK_SET_LOCAL_NAME | 4759 GAP_TASK_SET_EIR_DATA | 4760 GAP_TASK_WRITE_SCAN_ENABLE | 4761 GAP_TASK_WRITE_PAGE_TIMEOUT; 4762 #endif 4763 4764 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4765 hci_stack->classic_read_local_oob_data = false; 4766 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4767 #endif 4768 4769 // LE 4770 #ifdef ENABLE_BLE 4771 memset(hci_stack->le_random_address, 0, 6); 4772 hci_stack->le_random_address_set = 0; 4773 #endif 4774 #ifdef ENABLE_LE_CENTRAL 4775 hci_stack->le_scanning_active = false; 4776 hci_stack->le_scanning_param_update = true; 4777 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4778 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4779 hci_stack->le_whitelist_capacity = 0; 4780 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4781 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4782 #endif 4783 #endif 4784 #ifdef ENABLE_LE_PERIPHERAL 4785 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4786 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4787 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4788 } 4789 if (hci_stack->le_advertisements_data != NULL){ 4790 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4791 } 4792 #endif 4793 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4794 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4795 #endif 4796 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4797 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4798 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4799 #endif 4800 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4801 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4802 #endif 4803 } 4804 4805 #ifdef ENABLE_CLASSIC 4806 /** 4807 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4808 */ 4809 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4810 // store and open remote device db 4811 hci_stack->link_key_db = link_key_db; 4812 if (hci_stack->link_key_db) { 4813 hci_stack->link_key_db->open(); 4814 } 4815 } 4816 #endif 4817 4818 void hci_init(const hci_transport_t *transport, const void *config){ 4819 4820 #ifdef HAVE_MALLOC 4821 if (!hci_stack) { 4822 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4823 } 4824 #else 4825 hci_stack = &hci_stack_static; 4826 #endif 4827 memset(hci_stack, 0, sizeof(hci_stack_t)); 4828 4829 // reference to use transport layer implementation 4830 hci_stack->hci_transport = transport; 4831 4832 // reference to used config 4833 hci_stack->config = config; 4834 4835 // setup pointer for outgoing packet buffer 4836 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4837 4838 // max acl payload size defined in config.h 4839 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4840 4841 // register packet handlers with transport 4842 transport->register_packet_handler(&packet_handler); 4843 4844 hci_stack->state = HCI_STATE_OFF; 4845 4846 // class of device 4847 hci_stack->class_of_device = 0x007a020c; // Smartphone 4848 4849 // bondable by default 4850 hci_stack->bondable = 1; 4851 4852 #ifdef ENABLE_CLASSIC 4853 // classic name 4854 hci_stack->local_name = default_classic_name; 4855 4856 // Master slave policy 4857 hci_stack->master_slave_policy = 1; 4858 4859 // Allow Role Switch 4860 hci_stack->allow_role_switch = 1; 4861 4862 // Default / minimum security level = 2 4863 hci_stack->gap_security_level = LEVEL_2; 4864 4865 // Default Security Mode 4 4866 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4867 4868 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4869 hci_stack->gap_required_encyrption_key_size = 7; 4870 4871 // Link Supervision Timeout 4872 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4873 4874 // All ACL packet types are enabledh 4875 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4876 #endif 4877 4878 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4879 hci_stack->ssp_enable = 1; 4880 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4881 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4882 hci_stack->ssp_auto_accept = 1; 4883 4884 // Secure Connections: enable (requires support from Controller) 4885 hci_stack->secure_connections_enable = true; 4886 4887 // voice setting - signed 16 bit pcm data with CVSD over the air 4888 hci_stack->sco_voice_setting = 0x60; 4889 4890 #ifdef ENABLE_BLE 4891 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4892 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4893 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4894 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4895 hci_stack->le_connection_latency = 4; // 4 4896 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4897 hci_stack->le_minimum_ce_length = 0; // 0 ms 4898 hci_stack->le_maximum_ce_length = 0; // 0 ms 4899 #endif 4900 4901 #ifdef ENABLE_LE_CENTRAL 4902 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4903 4904 // default LE Scanning 4905 hci_stack->le_scan_type = 0x01; // active 4906 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4907 hci_stack->le_scan_window = 0x30; // 30 ms 4908 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4909 #endif 4910 4911 #ifdef ENABLE_LE_PERIPHERAL 4912 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4913 4914 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4915 hci_stack->le_advertisements_interval_min = 0x0800; 4916 hci_stack->le_advertisements_interval_max = 0x0800; 4917 hci_stack->le_advertisements_type = 0; 4918 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4919 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4920 hci_stack->le_advertisements_channel_map = 0x07; 4921 hci_stack->le_advertisements_filter_policy = 0; 4922 #endif 4923 4924 // connection parameter range used to answer connection parameter update requests in l2cap 4925 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4926 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4927 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4928 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4929 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4930 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4931 4932 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4933 hci_stack->iso_packets_to_queue = 1; 4934 #endif 4935 4936 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4937 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4938 #endif 4939 4940 hci_state_reset(); 4941 } 4942 4943 void hci_deinit(void){ 4944 btstack_run_loop_remove_timer(&hci_stack->timeout); 4945 #ifdef HAVE_MALLOC 4946 if (hci_stack) { 4947 free(hci_stack); 4948 } 4949 #endif 4950 hci_stack = NULL; 4951 4952 #ifdef ENABLE_CLASSIC 4953 disable_l2cap_timeouts = 0; 4954 #endif 4955 } 4956 4957 /** 4958 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4959 */ 4960 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4961 hci_stack->chipset = chipset_driver; 4962 4963 // reset chipset driver - init is also called on power_up 4964 if (hci_stack->chipset && hci_stack->chipset->init){ 4965 hci_stack->chipset->init(hci_stack->config); 4966 } 4967 } 4968 4969 void hci_enable_custom_pre_init(void){ 4970 hci_stack->chipset_pre_init = true; 4971 } 4972 4973 /** 4974 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4975 */ 4976 void hci_set_control(const btstack_control_t *hardware_control){ 4977 // references to used control implementation 4978 hci_stack->control = hardware_control; 4979 // init with transport config 4980 hardware_control->init(hci_stack->config); 4981 } 4982 4983 static void hci_discard_connections(void){ 4984 btstack_linked_list_iterator_t it; 4985 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4986 while (btstack_linked_list_iterator_has_next(&it)){ 4987 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4988 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4989 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4990 hci_shutdown_connection(connection); 4991 } 4992 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4993 while (hci_stack->iso_streams != NULL){ 4994 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4995 } 4996 #endif 4997 } 4998 4999 void hci_close(void){ 5000 5001 #ifdef ENABLE_CLASSIC 5002 // close remote device db 5003 if (hci_stack->link_key_db) { 5004 hci_stack->link_key_db->close(); 5005 } 5006 #endif 5007 5008 hci_discard_connections(); 5009 5010 hci_power_control(HCI_POWER_OFF); 5011 5012 #ifdef HAVE_MALLOC 5013 free(hci_stack); 5014 #endif 5015 hci_stack = NULL; 5016 } 5017 5018 #ifdef HAVE_SCO_TRANSPORT 5019 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5020 hci_stack->sco_transport = sco_transport; 5021 sco_transport->register_packet_handler(&packet_handler); 5022 } 5023 #endif 5024 5025 #ifdef ENABLE_CLASSIC 5026 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5027 // validate ranage and set 5028 if (encryption_key_size < 7) return; 5029 if (encryption_key_size > 16) return; 5030 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5031 } 5032 5033 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5034 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5035 hci_stack->gap_security_mode = security_mode; 5036 return ERROR_CODE_SUCCESS; 5037 } else { 5038 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5039 } 5040 } 5041 5042 gap_security_mode_t gap_get_security_mode(void){ 5043 return hci_stack->gap_security_mode; 5044 } 5045 5046 void gap_set_security_level(gap_security_level_t security_level){ 5047 hci_stack->gap_security_level = security_level; 5048 } 5049 5050 gap_security_level_t gap_get_security_level(void){ 5051 if (hci_stack->gap_secure_connections_only_mode){ 5052 return LEVEL_4; 5053 } 5054 return hci_stack->gap_security_level; 5055 } 5056 5057 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5058 hci_stack->gap_minimal_service_security_level = security_level; 5059 } 5060 5061 void gap_set_secure_connections_only_mode(bool enable){ 5062 hci_stack->gap_secure_connections_only_mode = enable; 5063 } 5064 5065 bool gap_get_secure_connections_only_mode(void){ 5066 return hci_stack->gap_secure_connections_only_mode; 5067 } 5068 #endif 5069 5070 #ifdef ENABLE_CLASSIC 5071 void gap_set_class_of_device(uint32_t class_of_device){ 5072 hci_stack->class_of_device = class_of_device; 5073 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5074 hci_run(); 5075 } 5076 5077 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5078 hci_stack->default_link_policy_settings = default_link_policy_settings; 5079 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5080 hci_run(); 5081 } 5082 5083 void gap_set_allow_role_switch(bool allow_role_switch){ 5084 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5085 } 5086 5087 uint8_t hci_get_allow_role_switch(void){ 5088 return hci_stack->allow_role_switch; 5089 } 5090 5091 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5092 hci_stack->link_supervision_timeout = link_supervision_timeout; 5093 } 5094 5095 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5096 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5097 } 5098 5099 uint16_t hci_automatic_flush_timeout(void){ 5100 return hci_stack->automatic_flush_timeout; 5101 } 5102 5103 void hci_disable_l2cap_timeout_check(void){ 5104 disable_l2cap_timeouts = 1; 5105 } 5106 #endif 5107 5108 #ifndef HAVE_HOST_CONTROLLER_API 5109 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5110 void hci_set_bd_addr(bd_addr_t addr){ 5111 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5112 hci_stack->custom_bd_addr_set = 1; 5113 } 5114 #endif 5115 5116 // State-Module-Driver overview 5117 // state module low-level 5118 // HCI_STATE_OFF off close 5119 // HCI_STATE_INITIALIZING, on open 5120 // HCI_STATE_WORKING, on open 5121 // HCI_STATE_HALTING, on open 5122 // HCI_STATE_SLEEPING, off/sleep close 5123 // HCI_STATE_FALLING_ASLEEP on open 5124 5125 static int hci_power_control_on(void){ 5126 5127 // power on 5128 int err = 0; 5129 if (hci_stack->control && hci_stack->control->on){ 5130 err = (*hci_stack->control->on)(); 5131 } 5132 if (err){ 5133 log_error( "POWER_ON failed"); 5134 hci_emit_hci_open_failed(); 5135 return err; 5136 } 5137 5138 // int chipset driver 5139 if (hci_stack->chipset && hci_stack->chipset->init){ 5140 hci_stack->chipset->init(hci_stack->config); 5141 } 5142 5143 // init transport 5144 if (hci_stack->hci_transport->init){ 5145 hci_stack->hci_transport->init(hci_stack->config); 5146 } 5147 5148 // open transport 5149 err = hci_stack->hci_transport->open(); 5150 if (err){ 5151 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5152 if (hci_stack->control && hci_stack->control->off){ 5153 (*hci_stack->control->off)(); 5154 } 5155 hci_emit_hci_open_failed(); 5156 return err; 5157 } 5158 return 0; 5159 } 5160 5161 static void hci_power_control_off(void){ 5162 5163 log_info("hci_power_control_off"); 5164 5165 // close low-level device 5166 hci_stack->hci_transport->close(); 5167 5168 log_info("hci_power_control_off - hci_transport closed"); 5169 5170 // power off 5171 if (hci_stack->control && hci_stack->control->off){ 5172 (*hci_stack->control->off)(); 5173 } 5174 5175 log_info("hci_power_control_off - control closed"); 5176 5177 hci_stack->state = HCI_STATE_OFF; 5178 } 5179 5180 static void hci_power_control_sleep(void){ 5181 5182 log_info("hci_power_control_sleep"); 5183 5184 #if 0 5185 // don't close serial port during sleep 5186 5187 // close low-level device 5188 hci_stack->hci_transport->close(hci_stack->config); 5189 #endif 5190 5191 // sleep mode 5192 if (hci_stack->control && hci_stack->control->sleep){ 5193 (*hci_stack->control->sleep)(); 5194 } 5195 5196 hci_stack->state = HCI_STATE_SLEEPING; 5197 } 5198 5199 static int hci_power_control_wake(void){ 5200 5201 log_info("hci_power_control_wake"); 5202 5203 // wake on 5204 if (hci_stack->control && hci_stack->control->wake){ 5205 (*hci_stack->control->wake)(); 5206 } 5207 5208 #if 0 5209 // open low-level device 5210 int err = hci_stack->hci_transport->open(hci_stack->config); 5211 if (err){ 5212 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5213 if (hci_stack->control && hci_stack->control->off){ 5214 (*hci_stack->control->off)(); 5215 } 5216 hci_emit_hci_open_failed(); 5217 return err; 5218 } 5219 #endif 5220 5221 return 0; 5222 } 5223 5224 static void hci_power_enter_initializing_state(void){ 5225 // set up state machine 5226 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5227 hci_stack->hci_packet_buffer_reserved = false; 5228 hci_stack->state = HCI_STATE_INITIALIZING; 5229 5230 #ifndef HAVE_HOST_CONTROLLER_API 5231 if (hci_stack->chipset_pre_init) { 5232 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5233 } else 5234 #endif 5235 { 5236 hci_stack->substate = HCI_INIT_SEND_RESET; 5237 } 5238 } 5239 5240 static void hci_power_enter_halting_state(void){ 5241 #ifdef ENABLE_BLE 5242 // drop entries scheduled for removal, mark others for re-adding 5243 btstack_linked_list_iterator_t it; 5244 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5245 while (btstack_linked_list_iterator_has_next(&it)){ 5246 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5247 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5248 btstack_linked_list_iterator_remove(&it); 5249 btstack_memory_whitelist_entry_free(entry); 5250 } else { 5251 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5252 } 5253 } 5254 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5255 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5256 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5257 while (btstack_linked_list_iterator_has_next(&it)){ 5258 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5259 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5260 btstack_linked_list_iterator_remove(&it); 5261 btstack_memory_periodic_advertiser_list_entry_free(entry); 5262 } else { 5263 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5264 continue; 5265 } 5266 } 5267 #endif 5268 #endif 5269 // see hci_run 5270 hci_stack->state = HCI_STATE_HALTING; 5271 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5272 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5273 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5274 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5275 btstack_run_loop_add_timer(&hci_stack->timeout); 5276 } 5277 5278 // returns error 5279 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5280 int err; 5281 switch (power_mode){ 5282 case HCI_POWER_ON: 5283 err = hci_power_control_on(); 5284 if (err != 0) { 5285 log_error("hci_power_control_on() error %d", err); 5286 return err; 5287 } 5288 hci_power_enter_initializing_state(); 5289 break; 5290 case HCI_POWER_OFF: 5291 // do nothing 5292 break; 5293 case HCI_POWER_SLEEP: 5294 // do nothing (with SLEEP == OFF) 5295 break; 5296 default: 5297 btstack_assert(false); 5298 break; 5299 } 5300 return ERROR_CODE_SUCCESS; 5301 } 5302 5303 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5304 switch (power_mode){ 5305 case HCI_POWER_ON: 5306 // do nothing 5307 break; 5308 case HCI_POWER_OFF: 5309 // no connections yet, just turn it off 5310 hci_power_control_off(); 5311 break; 5312 case HCI_POWER_SLEEP: 5313 // no connections yet, just turn it off 5314 hci_power_control_sleep(); 5315 break; 5316 default: 5317 btstack_assert(false); 5318 break; 5319 } 5320 return ERROR_CODE_SUCCESS; 5321 } 5322 5323 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5324 switch (power_mode){ 5325 case HCI_POWER_ON: 5326 // do nothing 5327 break; 5328 case HCI_POWER_OFF: 5329 hci_power_enter_halting_state(); 5330 break; 5331 case HCI_POWER_SLEEP: 5332 // see hci_run 5333 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5334 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5335 break; 5336 default: 5337 btstack_assert(false); 5338 break; 5339 } 5340 return ERROR_CODE_SUCCESS; 5341 } 5342 5343 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5344 switch (power_mode){ 5345 case HCI_POWER_ON: 5346 hci_power_enter_initializing_state(); 5347 break; 5348 case HCI_POWER_OFF: 5349 // do nothing 5350 break; 5351 case HCI_POWER_SLEEP: 5352 // see hci_run 5353 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5354 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5355 break; 5356 default: 5357 btstack_assert(false); 5358 break; 5359 } 5360 return ERROR_CODE_SUCCESS; 5361 } 5362 5363 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5364 switch (power_mode){ 5365 case HCI_POWER_ON: 5366 hci_power_enter_initializing_state(); 5367 break; 5368 case HCI_POWER_OFF: 5369 hci_power_enter_halting_state(); 5370 break; 5371 case HCI_POWER_SLEEP: 5372 // do nothing 5373 break; 5374 default: 5375 btstack_assert(false); 5376 break; 5377 } 5378 return ERROR_CODE_SUCCESS; 5379 } 5380 5381 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5382 int err; 5383 switch (power_mode){ 5384 case HCI_POWER_ON: 5385 err = hci_power_control_wake(); 5386 if (err) return err; 5387 hci_power_enter_initializing_state(); 5388 break; 5389 case HCI_POWER_OFF: 5390 hci_power_enter_halting_state(); 5391 break; 5392 case HCI_POWER_SLEEP: 5393 // do nothing 5394 break; 5395 default: 5396 btstack_assert(false); 5397 break; 5398 } 5399 return ERROR_CODE_SUCCESS; 5400 } 5401 5402 int hci_power_control(HCI_POWER_MODE power_mode){ 5403 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5404 btstack_run_loop_remove_timer(&hci_stack->timeout); 5405 int err = 0; 5406 switch (hci_stack->state){ 5407 case HCI_STATE_OFF: 5408 err = hci_power_control_state_off(power_mode); 5409 break; 5410 case HCI_STATE_INITIALIZING: 5411 err = hci_power_control_state_initializing(power_mode); 5412 break; 5413 case HCI_STATE_WORKING: 5414 err = hci_power_control_state_working(power_mode); 5415 break; 5416 case HCI_STATE_HALTING: 5417 err = hci_power_control_state_halting(power_mode); 5418 break; 5419 case HCI_STATE_FALLING_ASLEEP: 5420 err = hci_power_control_state_falling_asleep(power_mode); 5421 break; 5422 case HCI_STATE_SLEEPING: 5423 err = hci_power_control_state_sleeping(power_mode); 5424 break; 5425 default: 5426 btstack_assert(false); 5427 break; 5428 } 5429 if (err != 0){ 5430 return err; 5431 } 5432 5433 // create internal event 5434 hci_emit_state(); 5435 5436 // trigger next/first action 5437 hci_run(); 5438 5439 return 0; 5440 } 5441 5442 5443 static void hci_halting_run(void) { 5444 5445 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5446 5447 hci_connection_t *connection; 5448 #ifdef ENABLE_BLE 5449 #ifdef ENABLE_LE_PERIPHERAL 5450 bool stop_advertismenets; 5451 #endif 5452 #endif 5453 5454 switch (hci_stack->substate) { 5455 case HCI_HALTING_CLASSIC_STOP: 5456 #ifdef ENABLE_CLASSIC 5457 if (!hci_can_send_command_packet_now()) return; 5458 5459 if (hci_stack->connectable || hci_stack->discoverable){ 5460 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5461 hci_send_cmd(&hci_write_scan_enable, 0); 5462 return; 5463 } 5464 #endif 5465 /* fall through */ 5466 5467 case HCI_HALTING_LE_ADV_STOP: 5468 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5469 5470 #ifdef ENABLE_BLE 5471 #ifdef ENABLE_LE_PERIPHERAL 5472 if (!hci_can_send_command_packet_now()) return; 5473 5474 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5475 5476 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5477 if (hci_extended_advertising_supported()){ 5478 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5479 btstack_linked_list_iterator_t it; 5480 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5481 // stop all periodic advertisements and check if an extended set is active 5482 while (btstack_linked_list_iterator_has_next(&it)){ 5483 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5484 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5485 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5486 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5487 return; 5488 } 5489 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5490 stop_advertismenets = true; 5491 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5492 } 5493 } 5494 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5495 if (stop_advertismenets){ 5496 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5497 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5498 return; 5499 } 5500 } else 5501 #else /* ENABLE_LE_PERIPHERAL */ 5502 { 5503 if (stop_advertismenets) { 5504 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5505 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5506 return; 5507 } 5508 } 5509 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5510 #endif /* ENABLE_LE_PERIPHERAL */ 5511 #endif /* ENABLE_BLE */ 5512 5513 /* fall through */ 5514 5515 case HCI_HALTING_LE_SCAN_STOP: 5516 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5517 if (!hci_can_send_command_packet_now()) return; 5518 5519 #ifdef ENABLE_BLE 5520 #ifdef ENABLE_LE_CENTRAL 5521 if (hci_stack->le_scanning_active){ 5522 hci_le_scan_stop(); 5523 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5524 return; 5525 } 5526 #endif 5527 #endif 5528 5529 /* fall through */ 5530 5531 case HCI_HALTING_DISCONNECT_ALL: 5532 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5533 if (!hci_can_send_command_packet_now()) return; 5534 5535 // close all open connections 5536 connection = (hci_connection_t *) hci_stack->connections; 5537 if (connection) { 5538 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5539 5540 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5541 5542 // check state 5543 switch(connection->state) { 5544 case SENT_DISCONNECT: 5545 case RECEIVED_DISCONNECTION_COMPLETE: 5546 // wait until connection is gone 5547 return; 5548 default: 5549 break; 5550 } 5551 5552 // finally, send the disconnect command 5553 connection->state = SENT_DISCONNECT; 5554 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5555 return; 5556 } 5557 5558 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5559 // stop BIGs and BIG Syncs 5560 if (hci_stack->le_audio_bigs != NULL){ 5561 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5562 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5563 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5564 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5565 return; 5566 } 5567 if (hci_stack->le_audio_big_syncs != NULL){ 5568 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5569 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5570 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5571 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5572 return; 5573 } 5574 #endif 5575 5576 btstack_run_loop_remove_timer(&hci_stack->timeout); 5577 5578 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5579 log_info("HCI_STATE_HALTING: wait 50 ms"); 5580 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5581 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5582 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5583 btstack_run_loop_add_timer(&hci_stack->timeout); 5584 break; 5585 5586 case HCI_HALTING_W4_CLOSE_TIMER: 5587 // keep waiting 5588 break; 5589 5590 case HCI_HALTING_CLOSE: 5591 // close left over connections (that had not been properly closed before) 5592 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5593 hci_discard_connections(); 5594 5595 log_info("HCI_STATE_HALTING, calling off"); 5596 5597 // switch mode 5598 hci_power_control_off(); 5599 5600 log_info("HCI_STATE_HALTING, emitting state"); 5601 hci_emit_state(); 5602 log_info("HCI_STATE_HALTING, done"); 5603 break; 5604 5605 default: 5606 break; 5607 } 5608 }; 5609 5610 static void hci_falling_asleep_run(void){ 5611 hci_connection_t * connection; 5612 switch(hci_stack->substate) { 5613 case HCI_FALLING_ASLEEP_DISCONNECT: 5614 log_info("HCI_STATE_FALLING_ASLEEP"); 5615 // close all open connections 5616 connection = (hci_connection_t *) hci_stack->connections; 5617 if (connection){ 5618 5619 // send disconnect 5620 if (!hci_can_send_command_packet_now()) return; 5621 5622 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5623 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5624 5625 // send disconnected event right away - causes higher layer connections to get closed, too. 5626 hci_shutdown_connection(connection); 5627 return; 5628 } 5629 5630 if (hci_classic_supported()){ 5631 // disable page and inquiry scan 5632 if (!hci_can_send_command_packet_now()) return; 5633 5634 log_info("HCI_STATE_HALTING, disabling inq scans"); 5635 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5636 5637 // continue in next sub state 5638 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5639 break; 5640 } 5641 5642 /* fall through */ 5643 5644 case HCI_FALLING_ASLEEP_COMPLETE: 5645 log_info("HCI_STATE_HALTING, calling sleep"); 5646 // switch mode 5647 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5648 hci_emit_state(); 5649 break; 5650 5651 default: 5652 break; 5653 } 5654 } 5655 5656 #ifdef ENABLE_CLASSIC 5657 5658 static void hci_update_scan_enable(void){ 5659 // 2 = page scan, 1 = inq scan 5660 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5661 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5662 hci_run(); 5663 } 5664 5665 void gap_discoverable_control(uint8_t enable){ 5666 if (enable) enable = 1; // normalize argument 5667 5668 if (hci_stack->discoverable == enable){ 5669 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5670 return; 5671 } 5672 5673 hci_stack->discoverable = enable; 5674 hci_update_scan_enable(); 5675 } 5676 5677 void gap_connectable_control(uint8_t enable){ 5678 if (enable) enable = 1; // normalize argument 5679 5680 // don't emit event 5681 if (hci_stack->connectable == enable) return; 5682 5683 hci_stack->connectable = enable; 5684 hci_update_scan_enable(); 5685 } 5686 #endif 5687 5688 void gap_local_bd_addr(bd_addr_t address_buffer){ 5689 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5690 } 5691 5692 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5693 static void hci_host_num_completed_packets(void){ 5694 5695 // create packet manually as arrays are not supported and num_commands should not get reduced 5696 hci_reserve_packet_buffer(); 5697 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5698 5699 uint16_t size = 0; 5700 uint16_t num_handles = 0; 5701 packet[size++] = 0x35; 5702 packet[size++] = 0x0c; 5703 size++; // skip param len 5704 size++; // skip num handles 5705 5706 // add { handle, packets } entries 5707 btstack_linked_item_t * it; 5708 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5709 hci_connection_t * connection = (hci_connection_t *) it; 5710 if (connection->num_packets_completed){ 5711 little_endian_store_16(packet, size, connection->con_handle); 5712 size += 2; 5713 little_endian_store_16(packet, size, connection->num_packets_completed); 5714 size += 2; 5715 // 5716 num_handles++; 5717 connection->num_packets_completed = 0; 5718 } 5719 } 5720 5721 packet[2] = size - 3; 5722 packet[3] = num_handles; 5723 5724 hci_stack->host_completed_packets = 0; 5725 5726 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5727 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5728 5729 // release packet buffer for synchronous transport implementations 5730 if (hci_transport_synchronous()){ 5731 hci_release_packet_buffer(); 5732 hci_emit_transport_packet_sent(); 5733 } 5734 } 5735 #endif 5736 5737 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5738 UNUSED(ds); 5739 hci_stack->substate = HCI_HALTING_CLOSE; 5740 hci_halting_run(); 5741 } 5742 5743 static bool hci_run_acl_fragments(void){ 5744 if (hci_stack->acl_fragmentation_total_size > 0u) { 5745 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5746 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5747 if (connection) { 5748 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5749 hci_send_acl_packet_fragments(connection); 5750 return true; 5751 } 5752 } else { 5753 // connection gone -> discard further fragments 5754 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5755 hci_stack->acl_fragmentation_total_size = 0; 5756 hci_stack->acl_fragmentation_pos = 0; 5757 } 5758 } 5759 return false; 5760 } 5761 5762 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5763 static bool hci_run_iso_fragments(void){ 5764 if (hci_stack->iso_fragmentation_total_size > 0u) { 5765 // TODO: flow control 5766 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5767 hci_send_iso_packet_fragments(); 5768 return true; 5769 } 5770 } 5771 return false; 5772 } 5773 #endif 5774 5775 #ifdef ENABLE_CLASSIC 5776 5777 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5778 static bool hci_classic_operation_active(void) { 5779 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5780 return true; 5781 } 5782 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5783 return true; 5784 } 5785 btstack_linked_item_t * it; 5786 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5787 hci_connection_t *connection = (hci_connection_t *) it; 5788 switch (connection->state) { 5789 case SENT_CREATE_CONNECTION: 5790 case SENT_CANCEL_CONNECTION: 5791 case SENT_DISCONNECT: 5792 return true; 5793 default: 5794 break; 5795 } 5796 } 5797 return false; 5798 } 5799 #endif 5800 5801 static bool hci_run_general_gap_classic(void){ 5802 5803 // assert stack is working and classic is active 5804 if (hci_classic_supported() == false) return false; 5805 if (hci_stack->state != HCI_STATE_WORKING) return false; 5806 5807 // decline incoming connections 5808 if (hci_stack->decline_reason){ 5809 uint8_t reason = hci_stack->decline_reason; 5810 hci_stack->decline_reason = 0; 5811 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5812 return true; 5813 } 5814 5815 if (hci_stack->gap_tasks_classic != 0){ 5816 hci_run_gap_tasks_classic(); 5817 return true; 5818 } 5819 5820 // start/stop inquiry 5821 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5822 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5823 if (hci_classic_operation_active() == false) 5824 #endif 5825 { 5826 uint8_t duration = hci_stack->inquiry_state; 5827 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5828 if (hci_stack->inquiry_max_period_length != 0){ 5829 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); 5830 } else { 5831 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5832 } 5833 return true; 5834 } 5835 } 5836 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5837 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5838 hci_send_cmd(&hci_inquiry_cancel); 5839 return true; 5840 } 5841 5842 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5843 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5844 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5845 return true; 5846 } 5847 5848 // remote name request 5849 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5850 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5851 if (hci_classic_operation_active() == false) 5852 #endif 5853 { 5854 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5855 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5856 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5857 return true; 5858 } 5859 } 5860 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5861 // Local OOB data 5862 if (hci_stack->classic_read_local_oob_data){ 5863 hci_stack->classic_read_local_oob_data = false; 5864 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5865 hci_send_cmd(&hci_read_local_extended_oob_data); 5866 } else { 5867 hci_send_cmd(&hci_read_local_oob_data); 5868 } 5869 } 5870 #endif 5871 // pairing 5872 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5873 uint8_t state = hci_stack->gap_pairing_state; 5874 uint8_t pin_code[PIN_CODE_LEN]; 5875 switch (state){ 5876 case GAP_PAIRING_STATE_SEND_PIN: 5877 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5878 memset(pin_code, 0, 16); 5879 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5880 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5881 break; 5882 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5883 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5884 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5885 break; 5886 case GAP_PAIRING_STATE_SEND_PASSKEY: 5887 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5888 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5889 break; 5890 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5891 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5892 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5893 break; 5894 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5895 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5896 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5897 break; 5898 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5899 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5900 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5901 break; 5902 default: 5903 break; 5904 } 5905 return true; 5906 } 5907 return false; 5908 } 5909 #endif 5910 5911 #ifdef ENABLE_BLE 5912 5913 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5914 static uint8_t hci_le_num_phys(uint8_t phys){ 5915 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5916 btstack_assert(phys); 5917 return num_bits_set[phys]; 5918 } 5919 #endif 5920 5921 #ifdef ENABLE_LE_CENTRAL 5922 static void hci_le_scan_stop(void){ 5923 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5924 if (hci_extended_advertising_supported()) { 5925 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5926 } else 5927 #endif 5928 { 5929 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5930 } 5931 } 5932 5933 static void 5934 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5935 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5936 if (hci_extended_advertising_supported()) { 5937 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5938 uint16_t le_connection_scan_interval[3]; 5939 uint16_t le_connection_scan_window[3]; 5940 uint16_t le_connection_interval_min[3]; 5941 uint16_t le_connection_interval_max[3]; 5942 uint16_t le_connection_latency[3]; 5943 uint16_t le_supervision_timeout[3]; 5944 uint16_t le_minimum_ce_length[3]; 5945 uint16_t le_maximum_ce_length[3]; 5946 5947 uint8_t i; 5948 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5949 for (i=0;i<num_phys;i++){ 5950 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5951 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5952 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5953 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5954 le_connection_latency[i] = hci_stack->le_connection_latency; 5955 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5956 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5957 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5958 } 5959 hci_send_cmd(&hci_le_extended_create_connection, 5960 initiator_filter_policy, 5961 hci_stack->le_connection_own_addr_type, // our addr type: 5962 address_type, // peer address type 5963 address, // peer bd addr 5964 hci_stack->le_connection_phys, // initiating PHY 5965 le_connection_scan_interval, // conn scan interval 5966 le_connection_scan_window, // conn scan windows 5967 le_connection_interval_min, // conn interval min 5968 le_connection_interval_max, // conn interval max 5969 le_connection_latency, // conn latency 5970 le_supervision_timeout, // conn latency 5971 le_minimum_ce_length, // min ce length 5972 le_maximum_ce_length // max ce length 5973 ); 5974 } else 5975 #endif 5976 { 5977 hci_send_cmd(&hci_le_create_connection, 5978 hci_stack->le_connection_scan_interval, // conn scan interval 5979 hci_stack->le_connection_scan_window, // conn scan windows 5980 initiator_filter_policy, // don't use whitelist 5981 address_type, // peer address type 5982 address, // peer bd addr 5983 hci_stack->le_connection_own_addr_type, // our addr type: 5984 hci_stack->le_connection_interval_min, // conn interval min 5985 hci_stack->le_connection_interval_max, // conn interval max 5986 hci_stack->le_connection_latency, // conn latency 5987 hci_stack->le_supervision_timeout, // conn latency 5988 hci_stack->le_minimum_ce_length, // min ce length 5989 hci_stack->le_maximum_ce_length // max ce length 5990 ); 5991 } 5992 } 5993 #endif 5994 5995 #ifdef ENABLE_LE_PERIPHERAL 5996 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5997 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5998 uint8_t operation = 0; 5999 if (pos == 0){ 6000 // first fragment or complete data 6001 operation |= 1; 6002 } 6003 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6004 // last fragment or complete data 6005 operation |= 2; 6006 } 6007 return operation; 6008 } 6009 #endif 6010 #endif 6011 6012 static bool hci_run_general_gap_le(void){ 6013 6014 btstack_linked_list_iterator_t lit; 6015 6016 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6017 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6018 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6019 hci_stack->le_resolvable_private_address_update_s = 0; 6020 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6021 return true; 6022 } 6023 #endif 6024 6025 // Phase 1: collect what to stop 6026 6027 #ifdef ENABLE_LE_CENTRAL 6028 bool scanning_stop = false; 6029 bool connecting_stop = false; 6030 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6031 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6032 bool periodic_sync_stop = false; 6033 #endif 6034 #endif 6035 #endif 6036 6037 #ifdef ENABLE_LE_PERIPHERAL 6038 bool advertising_stop = false; 6039 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6040 le_advertising_set_t * advertising_stop_set = NULL; 6041 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6042 bool periodic_advertising_stop = false; 6043 #endif 6044 #endif 6045 #endif 6046 6047 // check if own address changes 6048 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6049 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6050 6051 // check if whitelist needs modification 6052 bool whitelist_modification_pending = false; 6053 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6054 while (btstack_linked_list_iterator_has_next(&lit)){ 6055 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6056 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6057 whitelist_modification_pending = true; 6058 break; 6059 } 6060 } 6061 6062 // check if resolving list needs modification 6063 bool resolving_list_modification_pending = false; 6064 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6065 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6066 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6067 resolving_list_modification_pending = true; 6068 } 6069 #endif 6070 6071 #ifdef ENABLE_LE_CENTRAL 6072 6073 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6074 // check if periodic advertiser list needs modification 6075 bool periodic_list_modification_pending = false; 6076 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6077 while (btstack_linked_list_iterator_has_next(&lit)){ 6078 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6079 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6080 periodic_list_modification_pending = true; 6081 break; 6082 } 6083 } 6084 #endif 6085 6086 // scanning control 6087 if (hci_stack->le_scanning_active) { 6088 // stop if: 6089 // - parameter change required 6090 // - it's disabled 6091 // - whitelist change required but used for scanning 6092 // - resolving list modified 6093 // - own address changes 6094 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6095 if ((hci_stack->le_scanning_param_update) || 6096 !hci_stack->le_scanning_enabled || 6097 (scanning_uses_whitelist && whitelist_modification_pending) || 6098 resolving_list_modification_pending || 6099 random_address_change){ 6100 6101 scanning_stop = true; 6102 } 6103 } 6104 6105 // connecting control 6106 bool connecting_with_whitelist; 6107 switch (hci_stack->le_connecting_state){ 6108 case LE_CONNECTING_DIRECT: 6109 case LE_CONNECTING_WHITELIST: 6110 // stop connecting if: 6111 // - connecting uses white and whitelist modification pending 6112 // - if it got disabled 6113 // - resolving list modified 6114 // - own address changes 6115 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6116 if ((connecting_with_whitelist && whitelist_modification_pending) || 6117 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6118 resolving_list_modification_pending || 6119 random_address_change) { 6120 6121 connecting_stop = true; 6122 } 6123 break; 6124 default: 6125 break; 6126 } 6127 6128 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6129 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6130 // periodic sync control 6131 bool sync_with_advertiser_list; 6132 switch(hci_stack->le_periodic_sync_state){ 6133 case LE_CONNECTING_DIRECT: 6134 case LE_CONNECTING_WHITELIST: 6135 // stop sync if: 6136 // - sync with advertiser list and advertiser list modification pending 6137 // - if it got disabled 6138 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6139 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6140 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6141 periodic_sync_stop = true; 6142 } 6143 break; 6144 default: 6145 break; 6146 } 6147 #endif 6148 #endif 6149 6150 #endif /* ENABLE_LE_CENTRAL */ 6151 6152 #ifdef ENABLE_LE_PERIPHERAL 6153 // le advertisement control 6154 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6155 // stop if: 6156 // - parameter change required 6157 // - random address used in advertising and changes 6158 // - it's disabled 6159 // - whitelist change required but used for advertisement filter policy 6160 // - resolving list modified 6161 // - own address changes 6162 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6163 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6164 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6165 if (advertising_change || 6166 (advertising_uses_random_address && random_address_change) || 6167 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6168 (advertising_uses_whitelist && whitelist_modification_pending) || 6169 resolving_list_modification_pending || 6170 random_address_change) { 6171 6172 advertising_stop = true; 6173 } 6174 } 6175 6176 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6177 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6178 btstack_linked_list_iterator_t it; 6179 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6180 while (btstack_linked_list_iterator_has_next(&it)){ 6181 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6182 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6183 // stop if: 6184 // - parameter change required 6185 // - random address used in connectable advertising and changes 6186 // - it's disabled 6187 // - whitelist change required but used for advertisement filter policy 6188 // - resolving list modified 6189 // - own address changes 6190 // - advertisement set will be removed 6191 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6192 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6193 bool advertising_uses_random_address = 6194 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6195 advertising_connectable; 6196 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6197 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6198 bool advertising_set_random_address_change = 6199 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6200 bool advertising_set_will_be_removed = 6201 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6202 if (advertising_parameter_change || 6203 (advertising_uses_random_address && advertising_set_random_address_change) || 6204 (advertising_enabled == false) || 6205 (advertising_uses_whitelist && whitelist_modification_pending) || 6206 resolving_list_modification_pending || 6207 advertising_set_will_be_removed) { 6208 6209 advertising_stop = true; 6210 advertising_stop_set = advertising_set; 6211 break; 6212 } 6213 } 6214 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6215 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6216 // stop if: 6217 // - it's disabled 6218 // - parameter change required 6219 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6220 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6221 if ((periodic_enabled == false) || periodic_parameter_change){ 6222 periodic_advertising_stop = true; 6223 advertising_stop_set = advertising_set; 6224 } 6225 } 6226 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6227 } 6228 } 6229 #endif 6230 6231 #endif 6232 6233 6234 // Phase 2: stop everything that should be off during modifications 6235 6236 6237 // 2.1 Outgoing connection 6238 #ifdef ENABLE_LE_CENTRAL 6239 if (connecting_stop){ 6240 hci_send_cmd(&hci_le_create_connection_cancel); 6241 return true; 6242 } 6243 #endif 6244 6245 // 2.2 Scanning 6246 #ifdef ENABLE_LE_CENTRAL 6247 if (scanning_stop){ 6248 hci_stack->le_scanning_active = false; 6249 hci_le_scan_stop(); 6250 return true; 6251 } 6252 6253 // 2.3 Periodic Sync 6254 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6255 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6256 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6257 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6258 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6259 return true; 6260 } 6261 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6262 if (periodic_sync_stop){ 6263 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6264 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6265 return true; 6266 } 6267 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6268 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6269 #endif /* ENABLE_LE_CENTRAL */ 6270 6271 // 2.4 Advertising: legacy, extended, periodic 6272 #ifdef ENABLE_LE_PERIPHERAL 6273 if (advertising_stop){ 6274 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6275 if (hci_extended_advertising_supported()) { 6276 uint8_t advertising_stop_handle; 6277 if (advertising_stop_set != NULL){ 6278 advertising_stop_handle = advertising_stop_set->advertising_handle; 6279 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6280 } else { 6281 advertising_stop_handle = 0; 6282 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6283 } 6284 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6285 const uint16_t durations[] = { 0 }; 6286 const uint16_t max_events[] = { 0 }; 6287 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6288 } else 6289 #endif 6290 { 6291 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6292 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6293 } 6294 return true; 6295 } 6296 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6297 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6298 if (periodic_advertising_stop){ 6299 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6300 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6301 return true; 6302 } 6303 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6304 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6305 #endif /* ENABLE_LE_PERIPHERAL */ 6306 6307 6308 // Phase 3: modify 6309 6310 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6311 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6312 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6313 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6314 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6315 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6316 #endif 6317 return true; 6318 } 6319 6320 #ifdef ENABLE_LE_CENTRAL 6321 if (hci_stack->le_scanning_param_update){ 6322 hci_stack->le_scanning_param_update = false; 6323 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6324 if (hci_extended_advertising_supported()){ 6325 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6326 uint8_t scan_types[2]; 6327 uint16_t scan_intervals[2]; 6328 uint16_t scan_windows[2]; 6329 6330 uint8_t i; 6331 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6332 for (i=0;i<num_phys;i++){ 6333 scan_types[i] = hci_stack->le_scan_type; 6334 scan_intervals[i] = hci_stack->le_scan_interval; 6335 scan_windows[i] = hci_stack->le_scan_window; 6336 } 6337 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6338 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6339 } else 6340 #endif 6341 { 6342 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6343 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6344 } 6345 return true; 6346 } 6347 #endif 6348 6349 #ifdef ENABLE_LE_PERIPHERAL 6350 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6351 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6352 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6353 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6354 if (hci_extended_advertising_supported()){ 6355 // map advertisment type to advertising event properties 6356 uint16_t adv_event_properties = 0; 6357 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6358 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6359 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6360 } 6361 hci_stack->le_advertising_set_in_current_command = 0; 6362 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6363 0, 6364 adv_event_properties, 6365 hci_stack->le_advertisements_interval_min, 6366 hci_stack->le_advertisements_interval_max, 6367 hci_stack->le_advertisements_channel_map, 6368 hci_stack->le_advertisements_own_addr_type, 6369 hci_stack->le_advertisements_direct_address_type, 6370 hci_stack->le_advertisements_direct_address, 6371 hci_stack->le_advertisements_filter_policy, 6372 0x7f, // tx power: no preference 6373 0x01, // primary adv phy: LE 1M 6374 0, // secondary adv max skip 6375 0x01, // secondary adv phy 6376 0, // adv sid 6377 0 // scan request notification 6378 ); 6379 } else 6380 #endif 6381 { 6382 hci_send_cmd(&hci_le_set_advertising_parameters, 6383 hci_stack->le_advertisements_interval_min, 6384 hci_stack->le_advertisements_interval_max, 6385 hci_stack->le_advertisements_type, 6386 hci_stack->le_advertisements_own_addr_type, 6387 hci_stack->le_advertisements_direct_address_type, 6388 hci_stack->le_advertisements_direct_address, 6389 hci_stack->le_advertisements_channel_map, 6390 hci_stack->le_advertisements_filter_policy); 6391 } 6392 return true; 6393 } 6394 6395 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6396 // assumption: only set if extended advertising is supported 6397 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6398 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6399 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6400 return true; 6401 } 6402 #endif 6403 6404 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6405 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6406 uint8_t adv_data_clean[31]; 6407 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6408 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6409 hci_stack->le_advertisements_data_len); 6410 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6411 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6412 if (hci_extended_advertising_supported()){ 6413 hci_stack->le_advertising_set_in_current_command = 0; 6414 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6415 } else 6416 #endif 6417 { 6418 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6419 } 6420 return true; 6421 } 6422 6423 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6424 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6425 uint8_t scan_data_clean[31]; 6426 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6427 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6428 hci_stack->le_scan_response_data_len); 6429 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6430 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6431 if (hci_extended_advertising_supported()){ 6432 hci_stack->le_advertising_set_in_current_command = 0; 6433 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6434 } else 6435 #endif 6436 { 6437 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6438 } 6439 return true; 6440 } 6441 6442 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6443 if (hci_extended_advertising_supported()) { 6444 btstack_linked_list_iterator_t it; 6445 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6446 while (btstack_linked_list_iterator_has_next(&it)){ 6447 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6448 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6449 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6450 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6451 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6452 return true; 6453 } 6454 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6455 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6456 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6457 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6458 advertising_set->advertising_handle, 6459 advertising_set->extended_params.advertising_event_properties, 6460 advertising_set->extended_params.primary_advertising_interval_min, 6461 advertising_set->extended_params.primary_advertising_interval_max, 6462 advertising_set->extended_params.primary_advertising_channel_map, 6463 advertising_set->extended_params.own_address_type, 6464 advertising_set->extended_params.peer_address_type, 6465 advertising_set->extended_params.peer_address, 6466 advertising_set->extended_params.advertising_filter_policy, 6467 advertising_set->extended_params.advertising_tx_power, 6468 advertising_set->extended_params.primary_advertising_phy, 6469 advertising_set->extended_params.secondary_advertising_max_skip, 6470 advertising_set->extended_params.secondary_advertising_phy, 6471 advertising_set->extended_params.advertising_sid, 6472 advertising_set->extended_params.scan_request_notification_enable 6473 ); 6474 return true; 6475 } 6476 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6477 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6478 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6479 return true; 6480 } 6481 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6482 uint16_t pos = advertising_set->adv_data_pos; 6483 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6484 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6485 if ((operation & 0x02) != 0){ 6486 // last fragment or complete data 6487 operation |= 2; 6488 advertising_set->adv_data_pos = 0; 6489 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6490 } else { 6491 advertising_set->adv_data_pos += data_to_upload; 6492 } 6493 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6494 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6495 return true; 6496 } 6497 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6498 uint16_t pos = advertising_set->scan_data_pos; 6499 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6500 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6501 if ((operation & 0x02) != 0){ 6502 advertising_set->scan_data_pos = 0; 6503 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6504 } else { 6505 advertising_set->scan_data_pos += data_to_upload; 6506 } 6507 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6508 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6509 return true; 6510 } 6511 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6512 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6513 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6514 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6515 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6516 advertising_set->advertising_handle, 6517 advertising_set->periodic_params.periodic_advertising_interval_min, 6518 advertising_set->periodic_params.periodic_advertising_interval_max, 6519 advertising_set->periodic_params.periodic_advertising_properties); 6520 return true; 6521 } 6522 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6523 uint16_t pos = advertising_set->periodic_data_pos; 6524 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6525 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6526 if ((operation & 0x02) != 0){ 6527 // last fragment or complete data 6528 operation |= 2; 6529 advertising_set->periodic_data_pos = 0; 6530 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6531 } else { 6532 advertising_set->periodic_data_pos += data_to_upload; 6533 } 6534 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6535 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6536 return true; 6537 } 6538 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6539 } 6540 } 6541 #endif 6542 6543 #endif 6544 6545 #ifdef ENABLE_LE_CENTRAL 6546 // if connect with whitelist was active and is not cancelled yet, wait until next time 6547 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6548 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6549 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6550 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6551 #endif 6552 #endif 6553 6554 // LE Whitelist Management 6555 if (whitelist_modification_pending){ 6556 // add/remove entries 6557 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6558 while (btstack_linked_list_iterator_has_next(&lit)){ 6559 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6560 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6561 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6562 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6563 bd_addr_type_t address_type = entry->address_type; 6564 bd_addr_t address; 6565 memcpy(address, entry->address, 6); 6566 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6567 // remove from whitelist if not scheduled for re-addition 6568 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6569 btstack_memory_whitelist_entry_free(entry); 6570 } 6571 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6572 return true; 6573 } 6574 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6575 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6576 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6577 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6578 return true; 6579 } 6580 } 6581 } 6582 6583 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6584 // LE Resolving List Management 6585 if (resolving_list_supported) { 6586 uint16_t i; 6587 switch (hci_stack->le_resolving_list_state) { 6588 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6589 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6590 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6591 return true; 6592 case LE_RESOLVING_LIST_READ_SIZE: 6593 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6594 hci_send_cmd(&hci_le_read_resolving_list_size); 6595 return true; 6596 case LE_RESOLVING_LIST_SEND_CLEAR: 6597 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6598 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6599 sizeof(hci_stack->le_resolving_list_add_entries)); 6600 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6601 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6602 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6603 sizeof(hci_stack->le_resolving_list_remove_entries)); 6604 hci_send_cmd(&hci_le_clear_resolving_list); 6605 return true; 6606 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6607 // first remove old entries 6608 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6609 uint8_t offset = i >> 3; 6610 uint8_t mask = 1 << (i & 7); 6611 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6612 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6613 bd_addr_t peer_identity_addreses; 6614 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6615 sm_key_t peer_irk; 6616 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6617 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6618 6619 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6620 // trigger whitelist entry 'update' (work around for controller bug) 6621 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6622 while (btstack_linked_list_iterator_has_next(&lit)) { 6623 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6624 if (entry->address_type != peer_identity_addr_type) continue; 6625 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6626 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6627 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6628 } 6629 #endif 6630 6631 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6632 peer_identity_addreses); 6633 return true; 6634 } 6635 6636 // then add new entries 6637 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6638 uint8_t offset = i >> 3; 6639 uint8_t mask = 1 << (i & 7); 6640 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6641 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6642 bd_addr_t peer_identity_addreses; 6643 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6644 sm_key_t peer_irk; 6645 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6646 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6647 if (btstack_is_null(peer_irk, 16)) continue; 6648 const uint8_t *local_irk = gap_get_persistent_irk(); 6649 // command uses format specifier 'P' that stores 16-byte value without flip 6650 uint8_t local_irk_flipped[16]; 6651 uint8_t peer_irk_flipped[16]; 6652 reverse_128(local_irk, local_irk_flipped); 6653 reverse_128(peer_irk, peer_irk_flipped); 6654 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6655 peer_irk_flipped, local_irk_flipped); 6656 return true; 6657 } 6658 6659 // finally, set privacy mode 6660 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6661 uint8_t offset = i >> 3; 6662 uint8_t mask = 1 << (i & 7); 6663 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6664 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6665 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6666 // Network Privacy Mode is default 6667 continue; 6668 } 6669 bd_addr_t peer_identity_address; 6670 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6671 sm_key_t peer_irk; 6672 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6673 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6674 if (btstack_is_null(peer_irk, 16)) continue; 6675 // command uses format specifier 'P' that stores 16-byte value without flip 6676 uint8_t peer_irk_flipped[16]; 6677 reverse_128(peer_irk, peer_irk_flipped); 6678 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6679 return true; 6680 } 6681 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6682 break; 6683 6684 default: 6685 break; 6686 } 6687 } 6688 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6689 #endif 6690 6691 #ifdef ENABLE_LE_CENTRAL 6692 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6693 // LE Whitelist Management 6694 if (periodic_list_modification_pending){ 6695 // add/remove entries 6696 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6697 while (btstack_linked_list_iterator_has_next(&lit)){ 6698 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6699 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6700 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6701 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6702 return true; 6703 } 6704 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6705 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6706 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6707 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6708 return true; 6709 } 6710 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6711 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6712 btstack_memory_periodic_advertiser_list_entry_free(entry); 6713 } 6714 } 6715 } 6716 #endif 6717 #endif 6718 6719 #ifdef ENABLE_LE_CENTRAL 6720 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6721 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6722 if (hci_stack->le_past_set_default_params){ 6723 hci_stack->le_past_set_default_params = false; 6724 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6725 hci_stack->le_past_mode, 6726 hci_stack->le_past_skip, 6727 hci_stack->le_past_sync_timeout, 6728 hci_stack->le_past_cte_type); 6729 return true; 6730 } 6731 #endif 6732 #endif 6733 #endif 6734 6735 // post-pone all actions until stack is fully working 6736 if (hci_stack->state != HCI_STATE_WORKING) return false; 6737 6738 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6739 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6740 6741 // Phase 4: restore state 6742 6743 #ifdef ENABLE_LE_CENTRAL 6744 // re-start scanning 6745 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6746 hci_stack->le_scanning_active = true; 6747 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6748 if (hci_extended_advertising_supported()){ 6749 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6750 } else 6751 #endif 6752 { 6753 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6754 } 6755 return true; 6756 } 6757 #endif 6758 6759 #ifdef ENABLE_LE_CENTRAL 6760 // re-start connecting 6761 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6762 bd_addr_t null_addr; 6763 memset(null_addr, 0, 6); 6764 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6765 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6766 hci_send_le_create_connection(1, 0, null_addr); 6767 return true; 6768 } 6769 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6770 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6771 switch(hci_stack->le_periodic_sync_request){ 6772 case LE_CONNECTING_DIRECT: 6773 case LE_CONNECTING_WHITELIST: 6774 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6775 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6776 hci_stack->le_periodic_sync_options, 6777 hci_stack->le_periodic_sync_advertising_sid, 6778 hci_stack->le_periodic_sync_advertiser_address_type, 6779 hci_stack->le_periodic_sync_advertiser_address, 6780 hci_stack->le_periodic_sync_skip, 6781 hci_stack->le_periodic_sync_timeout, 6782 hci_stack->le_periodic_sync_cte_type); 6783 return true; 6784 default: 6785 break; 6786 } 6787 } 6788 #endif 6789 #endif 6790 6791 #ifdef ENABLE_LE_PERIPHERAL 6792 // re-start advertising 6793 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6794 // check if advertisements should be enabled given 6795 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6796 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6797 6798 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6799 if (hci_extended_advertising_supported()){ 6800 const uint8_t advertising_handles[] = { 0 }; 6801 const uint16_t durations[] = { 0 }; 6802 const uint16_t max_events[] = { 0 }; 6803 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6804 } else 6805 #endif 6806 { 6807 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6808 } 6809 return true; 6810 } 6811 6812 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6813 if (hci_extended_advertising_supported()) { 6814 btstack_linked_list_iterator_t it; 6815 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6816 while (btstack_linked_list_iterator_has_next(&it)) { 6817 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6818 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6819 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6820 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6821 const uint16_t durations[] = { advertising_set->enable_timeout }; 6822 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6823 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6824 return true; 6825 } 6826 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6827 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6828 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6829 uint8_t enable = 1; 6830 if (advertising_set->periodic_include_adi){ 6831 enable |= 2; 6832 } 6833 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6834 return true; 6835 } 6836 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6837 } 6838 } 6839 #endif 6840 #endif 6841 6842 return false; 6843 } 6844 6845 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6846 static bool hci_run_iso_tasks(void){ 6847 btstack_linked_list_iterator_t it; 6848 6849 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6850 return false; 6851 } 6852 6853 // BIG 6854 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6855 while (btstack_linked_list_iterator_has_next(&it)){ 6856 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6857 switch (big->state){ 6858 case LE_AUDIO_BIG_STATE_CREATE: 6859 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6860 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6861 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6862 hci_send_cmd(&hci_le_create_big, 6863 big->params->big_handle, 6864 big->params->advertising_handle, 6865 big->params->num_bis, 6866 big->params->sdu_interval_us, 6867 big->params->max_sdu, 6868 big->params->max_transport_latency_ms, 6869 big->params->rtn, 6870 big->params->phy, 6871 big->params->packing, 6872 big->params->framing, 6873 big->params->encryption, 6874 big->params->broadcast_code); 6875 return true; 6876 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6877 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6878 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); 6879 return true; 6880 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6881 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6882 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6883 return true; 6884 case LE_AUDIO_BIG_STATE_TERMINATE: 6885 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6886 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6887 return true; 6888 default: 6889 break; 6890 } 6891 } 6892 6893 // BIG Sync 6894 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6895 while (btstack_linked_list_iterator_has_next(&it)){ 6896 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6897 switch (big_sync->state){ 6898 case LE_AUDIO_BIG_STATE_CREATE: 6899 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6900 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6901 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6902 hci_send_cmd(&hci_le_big_create_sync, 6903 big_sync->params->big_handle, 6904 big_sync->params->sync_handle, 6905 big_sync->params->encryption, 6906 big_sync->params->broadcast_code, 6907 big_sync->params->mse, 6908 big_sync->params->big_sync_timeout_10ms, 6909 big_sync->params->num_bis, 6910 big_sync->params->bis_indices); 6911 return true; 6912 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6913 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6914 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); 6915 return true; 6916 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6917 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6918 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6919 return true; 6920 case LE_AUDIO_BIG_STATE_TERMINATE: 6921 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6922 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6923 return true; 6924 default: 6925 break; 6926 } 6927 } 6928 6929 // CIG 6930 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6931 while (btstack_linked_list_iterator_has_next(&it)) { 6932 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6933 uint8_t i; 6934 // Set CIG Parameters 6935 uint8_t cis_id[MAX_NR_CIS]; 6936 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6937 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6938 uint8_t phy_c_to_p[MAX_NR_CIS]; 6939 uint8_t phy_p_to_c[MAX_NR_CIS]; 6940 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6941 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6942 switch (cig->state) { 6943 case LE_AUDIO_CIG_STATE_CREATE: 6944 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6945 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6946 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6947 le_audio_cig_params_t * params = cig->params; 6948 for (i = 0; i < params->num_cis; i++) { 6949 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6950 cis_id[i] = cis_params->cis_id; 6951 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6952 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6953 phy_c_to_p[i] = cis_params->phy_c_to_p; 6954 phy_p_to_c[i] = cis_params->phy_p_to_c; 6955 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6956 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6957 } 6958 hci_send_cmd(&hci_le_set_cig_parameters, 6959 cig->cig_id, 6960 params->sdu_interval_c_to_p, 6961 params->sdu_interval_p_to_c, 6962 params->worst_case_sca, 6963 params->packing, 6964 params->framing, 6965 params->max_transport_latency_c_to_p, 6966 params->max_transport_latency_p_to_c, 6967 params->num_cis, 6968 cis_id, 6969 max_sdu_c_to_p, 6970 max_sdu_p_to_c, 6971 phy_c_to_p, 6972 phy_p_to_c, 6973 rtn_c_to_p, 6974 rtn_p_to_c 6975 ); 6976 return true; 6977 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6978 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6979 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6980 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6981 for (i=0;i<cig->num_cis;i++){ 6982 cig->cis_setup_active[i] = true; 6983 } 6984 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6985 return true; 6986 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6987 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6988 // find next path to setup 6989 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6990 if (cig->cis_established[cis_index] == false) { 6991 continue; 6992 } 6993 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6994 bool setup = true; 6995 if (cis_direction == 0){ 6996 // 0 - input - host to controller 6997 // we are central => central to peripheral 6998 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6999 } else { 7000 // 1 - output - controller to host 7001 // we are central => peripheral to central 7002 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7003 } 7004 if (setup){ 7005 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7006 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7007 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7008 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); 7009 return true; 7010 } 7011 cig->state_vars.next_cis++; 7012 } 7013 // emit done 7014 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7015 default: 7016 break; 7017 } 7018 } 7019 7020 // CIS Accept/Reject 7021 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7022 while (btstack_linked_list_iterator_has_next(&it)) { 7023 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7024 hci_con_handle_t con_handle; 7025 switch (iso_stream->state){ 7026 case HCI_ISO_STREAM_W2_ACCEPT: 7027 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7028 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7029 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7030 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7031 return true; 7032 case HCI_ISO_STREAM_W2_REJECT: 7033 con_handle = iso_stream->cis_handle; 7034 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7035 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7036 hci_iso_stream_finalize(iso_stream); 7037 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7038 return true; 7039 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7040 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7041 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7042 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7043 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); 7044 break; 7045 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7046 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7047 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7048 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7049 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); 7050 break; 7051 default: 7052 break; 7053 } 7054 } 7055 7056 return false; 7057 } 7058 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7059 #endif 7060 7061 static bool hci_run_general_pending_commands(void){ 7062 btstack_linked_item_t * it; 7063 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7064 hci_connection_t * connection = (hci_connection_t *) it; 7065 7066 switch(connection->state){ 7067 case SEND_CREATE_CONNECTION: 7068 switch(connection->address_type){ 7069 #ifdef ENABLE_CLASSIC 7070 case BD_ADDR_TYPE_ACL: 7071 log_info("sending hci_create_connection"); 7072 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7073 break; 7074 #endif 7075 default: 7076 #ifdef ENABLE_BLE 7077 #ifdef ENABLE_LE_CENTRAL 7078 log_info("sending hci_le_create_connection"); 7079 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7080 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7081 hci_send_le_create_connection(0, connection->address_type, connection->address); 7082 connection->state = SENT_CREATE_CONNECTION; 7083 #endif 7084 #endif 7085 break; 7086 } 7087 return true; 7088 7089 #ifdef ENABLE_CLASSIC 7090 case RECEIVED_CONNECTION_REQUEST: 7091 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7092 log_info("sending hci_accept_connection_request"); 7093 connection->state = ACCEPTED_CONNECTION_REQUEST; 7094 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7095 return true; 7096 } 7097 break; 7098 #endif 7099 case SEND_DISCONNECT: 7100 connection->state = SENT_DISCONNECT; 7101 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7102 return true; 7103 7104 default: 7105 break; 7106 } 7107 7108 // no further commands if connection is about to get shut down 7109 if (connection->state == SENT_DISCONNECT) continue; 7110 7111 #ifdef ENABLE_CLASSIC 7112 7113 // Handling link key request requires remote supported features 7114 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7115 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7116 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7117 7118 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7119 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7120 if (have_link_key && security_level_sufficient){ 7121 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7122 } else { 7123 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7124 } 7125 return true; 7126 } 7127 7128 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7129 log_info("denying to pin request"); 7130 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7131 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7132 return true; 7133 } 7134 7135 // security assessment requires remote features 7136 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7137 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7138 hci_ssp_assess_security_on_io_cap_request(connection); 7139 // 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 7140 } 7141 7142 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7143 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7144 // set authentication requirements: 7145 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7146 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7147 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7148 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7149 authreq |= 1; 7150 } 7151 bool bonding = hci_stack->bondable; 7152 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7153 // if we have received IO Cap Response, we're in responder role 7154 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7155 if (bonding && !remote_bonding){ 7156 log_info("Remote not bonding, dropping local flag"); 7157 bonding = false; 7158 } 7159 } 7160 if (bonding){ 7161 if (connection->bonding_flags & BONDING_DEDICATED){ 7162 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7163 } else { 7164 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7165 } 7166 } 7167 uint8_t have_oob_data = 0; 7168 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7169 if (connection->classic_oob_c_192 != NULL){ 7170 have_oob_data |= 1; 7171 } 7172 if (connection->classic_oob_c_256 != NULL){ 7173 have_oob_data |= 2; 7174 } 7175 #endif 7176 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7177 return true; 7178 } 7179 7180 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7181 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7182 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7183 return true; 7184 } 7185 7186 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7187 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7188 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7189 const uint8_t zero[16] = { 0 }; 7190 const uint8_t * r_192 = zero; 7191 const uint8_t * c_192 = zero; 7192 const uint8_t * r_256 = zero; 7193 const uint8_t * c_256 = zero; 7194 // verify P-256 OOB 7195 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7196 c_256 = connection->classic_oob_c_256; 7197 if (connection->classic_oob_r_256 != NULL) { 7198 r_256 = connection->classic_oob_r_256; 7199 } 7200 } 7201 // verify P-192 OOB 7202 if ((connection->classic_oob_c_192 != NULL)) { 7203 c_192 = connection->classic_oob_c_192; 7204 if (connection->classic_oob_r_192 != NULL) { 7205 r_192 = connection->classic_oob_r_192; 7206 } 7207 } 7208 7209 // assess security 7210 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7211 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7212 if (need_level_4 && !can_reach_level_4){ 7213 log_info("Level 4 required, but not possible -> abort"); 7214 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7215 // send oob negative reply 7216 c_256 = NULL; 7217 c_192 = NULL; 7218 } 7219 7220 // Reply 7221 if (c_256 != zero) { 7222 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7223 } else if (c_192 != zero){ 7224 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7225 } else { 7226 hci_stack->classic_oob_con_handle = connection->con_handle; 7227 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7228 } 7229 return true; 7230 } 7231 #endif 7232 7233 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7234 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7235 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7236 return true; 7237 } 7238 7239 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7240 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7241 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7242 return true; 7243 } 7244 7245 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7246 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7247 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7248 return true; 7249 } 7250 7251 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7252 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7253 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7254 connection->state = SENT_DISCONNECT; 7255 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7256 return true; 7257 } 7258 7259 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7260 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7261 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7262 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7263 return true; 7264 } 7265 7266 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7267 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7268 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7269 return true; 7270 } 7271 7272 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7273 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7274 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7275 return true; 7276 } 7277 7278 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7279 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7280 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7281 return true; 7282 } 7283 7284 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7285 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7286 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7287 return true; 7288 } 7289 7290 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7291 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7292 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7293 return true; 7294 } 7295 #endif 7296 7297 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7298 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7299 #ifdef ENABLE_CLASSIC 7300 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7301 #endif 7302 if (connection->state != SENT_DISCONNECT){ 7303 connection->state = SENT_DISCONNECT; 7304 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7305 return true; 7306 } 7307 } 7308 7309 #ifdef ENABLE_CLASSIC 7310 uint16_t sniff_min_interval; 7311 switch (connection->sniff_min_interval){ 7312 case 0: 7313 break; 7314 case 0xffff: 7315 connection->sniff_min_interval = 0; 7316 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7317 return true; 7318 default: 7319 sniff_min_interval = connection->sniff_min_interval; 7320 connection->sniff_min_interval = 0; 7321 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7322 return true; 7323 } 7324 7325 if (connection->sniff_subrating_max_latency != 0xffff){ 7326 uint16_t max_latency = connection->sniff_subrating_max_latency; 7327 connection->sniff_subrating_max_latency = 0; 7328 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7329 return true; 7330 } 7331 7332 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7333 uint8_t service_type = (uint8_t) connection->qos_service_type; 7334 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7335 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); 7336 return true; 7337 } 7338 7339 if (connection->request_role != HCI_ROLE_INVALID){ 7340 hci_role_t role = connection->request_role; 7341 connection->request_role = HCI_ROLE_INVALID; 7342 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7343 return true; 7344 } 7345 #endif 7346 7347 if (connection->gap_connection_tasks != 0){ 7348 #ifdef ENABLE_CLASSIC 7349 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7350 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7351 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7352 return true; 7353 } 7354 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7355 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7356 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7357 return true; 7358 } 7359 #endif 7360 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7361 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7362 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7363 return true; 7364 } 7365 #ifdef ENABLE_BLE 7366 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7367 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7368 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7369 return true; 7370 } 7371 #endif 7372 } 7373 7374 #ifdef ENABLE_BLE 7375 switch (connection->le_con_parameter_update_state){ 7376 // response to L2CAP CON PARAMETER UPDATE REQUEST 7377 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7378 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7379 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7380 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7381 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7382 return true; 7383 case CON_PARAMETER_UPDATE_REPLY: 7384 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7385 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7386 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7387 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7388 return true; 7389 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7390 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7391 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7392 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7393 return true; 7394 default: 7395 break; 7396 } 7397 if (connection->le_phy_update_all_phys != 0xffu){ 7398 uint8_t all_phys = connection->le_phy_update_all_phys; 7399 connection->le_phy_update_all_phys = 0xff; 7400 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); 7401 return true; 7402 } 7403 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7404 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7405 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7406 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7407 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7408 return true; 7409 } 7410 if (connection->le_past_advertising_handle != 0xff){ 7411 uint8_t advertising_handle = connection->le_past_advertising_handle; 7412 connection->le_past_advertising_handle = 0xff; 7413 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7414 return true; 7415 } 7416 #endif 7417 #endif 7418 } 7419 return false; 7420 } 7421 7422 static void hci_run(void){ 7423 7424 // stack state sub statemachines 7425 switch (hci_stack->state) { 7426 case HCI_STATE_INITIALIZING: 7427 hci_initializing_run(); 7428 break; 7429 case HCI_STATE_HALTING: 7430 hci_halting_run(); 7431 break; 7432 case HCI_STATE_FALLING_ASLEEP: 7433 hci_falling_asleep_run(); 7434 break; 7435 default: 7436 break; 7437 } 7438 7439 // allow to run after initialization to working transition 7440 if (hci_stack->state != HCI_STATE_WORKING){ 7441 return; 7442 } 7443 7444 bool done; 7445 7446 // send continuation fragments first, as they block the prepared packet buffer 7447 done = hci_run_acl_fragments(); 7448 if (done) return; 7449 7450 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7451 done = hci_run_iso_fragments(); 7452 if (done) return; 7453 #endif 7454 7455 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7456 // send host num completed packets next as they don't require num_cmd_packets > 0 7457 if (!hci_can_send_comand_packet_transport()) return; 7458 if (hci_stack->host_completed_packets){ 7459 hci_host_num_completed_packets(); 7460 return; 7461 } 7462 #endif 7463 7464 if (!hci_can_send_command_packet_now()) return; 7465 7466 // global/non-connection oriented commands 7467 7468 7469 #ifdef ENABLE_CLASSIC 7470 // general gap classic 7471 done = hci_run_general_gap_classic(); 7472 if (done) return; 7473 #endif 7474 7475 #ifdef ENABLE_BLE 7476 // general gap le 7477 done = hci_run_general_gap_le(); 7478 if (done) return; 7479 7480 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7481 // ISO related tasks, e.g. BIG create/terminate/sync 7482 done = hci_run_iso_tasks(); 7483 if (done) return; 7484 #endif 7485 #endif 7486 7487 // send pending HCI commands 7488 hci_run_general_pending_commands(); 7489 } 7490 7491 #ifdef ENABLE_CLASSIC 7492 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7493 // bits 6-9 are 'don't use' 7494 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7495 7496 // restrict packet types to local and remote supported 7497 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7498 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7499 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7500 } 7501 #endif 7502 7503 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7504 // house-keeping 7505 7506 #ifdef ENABLE_CLASSIC 7507 bd_addr_t addr; 7508 hci_connection_t * conn; 7509 #endif 7510 #ifdef ENABLE_LE_CENTRAL 7511 uint8_t initiator_filter_policy; 7512 #endif 7513 7514 uint16_t opcode = little_endian_read_16(packet, 0); 7515 switch (opcode) { 7516 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7517 hci_stack->loopback_mode = packet[3]; 7518 break; 7519 7520 #ifdef ENABLE_CLASSIC 7521 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7522 reverse_bd_addr(&packet[3], addr); 7523 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7524 7525 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7526 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7527 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7528 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7529 } 7530 7531 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7532 if (!conn) { 7533 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7534 if (!conn) { 7535 // notify client that alloc failed 7536 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7537 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7538 } 7539 conn->state = SEND_CREATE_CONNECTION; 7540 } 7541 7542 log_info("conn state %u", conn->state); 7543 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7544 switch (conn->state) { 7545 // if connection active exists 7546 case OPEN: 7547 // and OPEN, emit connection complete command 7548 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7549 // packet not sent to controller 7550 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7551 case RECEIVED_DISCONNECTION_COMPLETE: 7552 // create connection triggered in disconnect complete event, let's do it now 7553 break; 7554 case SEND_CREATE_CONNECTION: 7555 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7556 if (hci_classic_operation_active()){ 7557 return ERROR_CODE_SUCCESS; 7558 } 7559 #endif 7560 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7561 break; 7562 default: 7563 // otherwise, just ignore as it is already in the open process 7564 // packet not sent to controller 7565 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7566 } 7567 conn->state = SENT_CREATE_CONNECTION; 7568 7569 // track outgoing connection 7570 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7571 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7572 break; 7573 7574 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7575 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7576 if (conn == NULL) { 7577 // neither SCO nor ACL connection for con handle 7578 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7579 } else { 7580 uint16_t remote_supported_sco_packets; 7581 switch (conn->address_type){ 7582 case BD_ADDR_TYPE_ACL: 7583 // assert SCO connection does not exit 7584 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7585 return ERROR_CODE_COMMAND_DISALLOWED; 7586 } 7587 // cache remote sco packet types 7588 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7589 7590 // allocate connection struct 7591 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7592 HCI_ROLE_MASTER); 7593 if (!conn) { 7594 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7595 } 7596 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7597 break; 7598 case BD_ADDR_TYPE_SCO: 7599 // update of existing SCO connection 7600 break; 7601 default: 7602 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7603 } 7604 } 7605 7606 // conn refers to hci connection of type sco now 7607 7608 conn->state = SENT_CREATE_CONNECTION; 7609 7610 // track outgoing connection to handle command status with error 7611 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7612 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7613 7614 // setup_synchronous_connection? Voice setting at offset 22 7615 // TODO: compare to current setting if sco connection already active 7616 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7617 7618 // derive sco payload length from packet types 7619 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7620 break; 7621 7622 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7623 // get SCO connection 7624 reverse_bd_addr(&packet[3], addr); 7625 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7626 if (conn == NULL){ 7627 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7628 } 7629 7630 conn->state = ACCEPTED_CONNECTION_REQUEST; 7631 7632 // track outgoing connection to handle command status with error 7633 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7634 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7635 7636 // accept_synchronous_connection? Voice setting at offset 18 7637 // TODO: compare to current setting if sco connection already active 7638 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7639 7640 // derive sco payload length from packet types 7641 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7642 break; 7643 #endif 7644 7645 #ifdef ENABLE_BLE 7646 #ifdef ENABLE_LE_CENTRAL 7647 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7648 // white list used? 7649 initiator_filter_policy = packet[7]; 7650 switch (initiator_filter_policy) { 7651 case 0: 7652 // whitelist not used 7653 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7654 break; 7655 case 1: 7656 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7657 break; 7658 default: 7659 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7660 break; 7661 } 7662 // track outgoing connection 7663 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7664 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7665 break; 7666 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7667 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7668 // white list used? 7669 initiator_filter_policy = packet[3]; 7670 switch (initiator_filter_policy) { 7671 case 0: 7672 // whitelist not used 7673 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7674 break; 7675 case 1: 7676 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7677 break; 7678 default: 7679 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7680 break; 7681 } 7682 // track outgoing connection 7683 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7684 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7685 break; 7686 #endif 7687 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7688 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7689 break; 7690 #endif 7691 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7692 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7693 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7694 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7695 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7696 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7697 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7698 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7699 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7700 case HCI_OPCODE_HCI_LE_READ_PHY: 7701 case HCI_OPCODE_HCI_LE_SET_PHY: 7702 // conection handle is first command parameter 7703 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7704 break; 7705 #endif 7706 #endif /* ENABLE_BLE */ 7707 default: 7708 break; 7709 } 7710 7711 hci_stack->num_cmd_packets--; 7712 7713 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7714 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7715 if (err != 0){ 7716 return ERROR_CODE_HARDWARE_FAILURE; 7717 } 7718 return ERROR_CODE_SUCCESS; 7719 } 7720 7721 // disconnect because of security block 7722 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7723 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7724 if (!connection) return; 7725 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7726 } 7727 7728 7729 // Configure Secure Simple Pairing 7730 7731 #ifdef ENABLE_CLASSIC 7732 7733 // enable will enable SSP during init 7734 void gap_ssp_set_enable(int enable){ 7735 hci_stack->ssp_enable = enable; 7736 } 7737 7738 static int hci_local_ssp_activated(void){ 7739 return gap_ssp_supported() && hci_stack->ssp_enable; 7740 } 7741 7742 // if set, BTstack will respond to io capability request using authentication requirement 7743 void gap_ssp_set_io_capability(int io_capability){ 7744 hci_stack->ssp_io_capability = io_capability; 7745 } 7746 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7747 hci_stack->ssp_authentication_requirement = authentication_requirement; 7748 } 7749 7750 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7751 void gap_ssp_set_auto_accept(int auto_accept){ 7752 hci_stack->ssp_auto_accept = auto_accept; 7753 } 7754 7755 void gap_secure_connections_enable(bool enable){ 7756 hci_stack->secure_connections_enable = enable; 7757 } 7758 bool gap_secure_connections_active(void){ 7759 return hci_stack->secure_connections_active; 7760 } 7761 7762 #endif 7763 7764 // va_list part of hci_send_cmd 7765 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7766 if (!hci_can_send_command_packet_now()){ 7767 log_error("hci_send_cmd called but cannot send packet now"); 7768 return ERROR_CODE_COMMAND_DISALLOWED; 7769 } 7770 7771 // for HCI INITIALIZATION 7772 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7773 hci_stack->last_cmd_opcode = cmd->opcode; 7774 7775 hci_reserve_packet_buffer(); 7776 uint8_t * packet = hci_stack->hci_packet_buffer; 7777 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7778 uint8_t status = hci_send_cmd_packet(packet, size); 7779 7780 // release packet buffer on error or for synchronous transport implementations 7781 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7782 hci_release_packet_buffer(); 7783 hci_emit_transport_packet_sent(); 7784 } 7785 7786 return status; 7787 } 7788 7789 /** 7790 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7791 */ 7792 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7793 va_list argptr; 7794 va_start(argptr, cmd); 7795 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7796 va_end(argptr); 7797 return status; 7798 } 7799 7800 // Create various non-HCI events. 7801 // TODO: generalize, use table similar to hci_create_command 7802 7803 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7804 // dump packet 7805 if (dump) { 7806 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7807 } 7808 7809 // dispatch to all event handlers 7810 btstack_linked_list_iterator_t it; 7811 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7812 while (btstack_linked_list_iterator_has_next(&it)){ 7813 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7814 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7815 } 7816 } 7817 7818 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7819 if (!hci_stack->acl_packet_handler) return; 7820 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7821 } 7822 7823 #ifdef ENABLE_CLASSIC 7824 static void hci_notify_if_sco_can_send_now(void){ 7825 // notify SCO sender if waiting 7826 if (!hci_stack->sco_waiting_for_can_send_now) return; 7827 if (hci_can_send_sco_packet_now()){ 7828 hci_stack->sco_waiting_for_can_send_now = 0; 7829 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7830 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7831 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7832 } 7833 } 7834 7835 // parsing end emitting has been merged to reduce code size 7836 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7837 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7838 7839 uint8_t * eir_data; 7840 ad_context_t context; 7841 const uint8_t * name; 7842 uint8_t name_len; 7843 7844 if (size < 3) return; 7845 7846 int event_type = hci_event_packet_get_type(packet); 7847 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7848 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7849 7850 switch (event_type){ 7851 case HCI_EVENT_INQUIRY_RESULT: 7852 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7853 if (size != (3 + (num_responses * 14))) return; 7854 break; 7855 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7856 if (size != 257) return; 7857 if (num_responses != 1) return; 7858 break; 7859 default: 7860 return; 7861 } 7862 7863 // event[1] is set at the end 7864 int i; 7865 for (i=0; i<num_responses;i++){ 7866 memset(event, 0, sizeof(event)); 7867 event[0] = GAP_EVENT_INQUIRY_RESULT; 7868 uint8_t event_size = 27; // if name is not set by EIR 7869 7870 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7871 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7872 (void)memcpy(&event[9], 7873 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7874 3); // class of device 7875 (void)memcpy(&event[12], 7876 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7877 2); // clock offset 7878 7879 switch (event_type){ 7880 case HCI_EVENT_INQUIRY_RESULT: 7881 // 14,15,16,17 = 0, size 18 7882 break; 7883 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7884 event[14] = 1; 7885 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7886 // 16,17 = 0, size 18 7887 break; 7888 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7889 event[14] = 1; 7890 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7891 // EIR packets only contain a single inquiry response 7892 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7893 name = NULL; 7894 // Iterate over EIR data 7895 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7896 uint8_t data_type = ad_iterator_get_data_type(&context); 7897 uint8_t data_size = ad_iterator_get_data_len(&context); 7898 const uint8_t * data = ad_iterator_get_data(&context); 7899 // Prefer Complete Local Name over Shortened Local Name 7900 switch (data_type){ 7901 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7902 if (name) continue; 7903 /* fall through */ 7904 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7905 name = data; 7906 name_len = data_size; 7907 break; 7908 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7909 if (data_size != 8) break; 7910 event[16] = 1; 7911 memcpy(&event[17], data, 8); 7912 break; 7913 default: 7914 break; 7915 } 7916 } 7917 if (name){ 7918 event[25] = 1; 7919 // truncate name if needed 7920 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7921 event[26] = len; 7922 (void)memcpy(&event[27], name, len); 7923 event_size += len; 7924 } 7925 break; 7926 default: 7927 return; 7928 } 7929 event[1] = event_size - 2; 7930 hci_emit_event(event, event_size, 1); 7931 } 7932 } 7933 #endif 7934 7935 void hci_emit_state(void){ 7936 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7937 uint8_t event[3]; 7938 event[0] = BTSTACK_EVENT_STATE; 7939 event[1] = sizeof(event) - 2u; 7940 event[2] = hci_stack->state; 7941 hci_emit_event(event, sizeof(event), 1); 7942 } 7943 7944 #ifdef ENABLE_CLASSIC 7945 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7946 uint8_t event[13]; 7947 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7948 event[1] = sizeof(event) - 2; 7949 event[2] = status; 7950 little_endian_store_16(event, 3, con_handle); 7951 reverse_bd_addr(address, &event[5]); 7952 event[11] = 1; // ACL connection 7953 event[12] = 0; // encryption disabled 7954 hci_emit_event(event, sizeof(event), 1); 7955 } 7956 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7957 if (disable_l2cap_timeouts) return; 7958 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7959 uint8_t event[4]; 7960 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7961 event[1] = sizeof(event) - 2; 7962 little_endian_store_16(event, 2, conn->con_handle); 7963 hci_emit_event(event, sizeof(event), 1); 7964 } 7965 #endif 7966 7967 #ifdef ENABLE_BLE 7968 #ifdef ENABLE_LE_CENTRAL 7969 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){ 7970 uint8_t hci_event[21]; 7971 hci_event[0] = HCI_EVENT_LE_META; 7972 hci_event[1] = sizeof(hci_event) - 2u; 7973 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7974 hci_event[3] = status; 7975 little_endian_store_16(hci_event, 4, con_handle); 7976 hci_event[6] = 0; // TODO: role 7977 hci_event[7] = address_type; 7978 reverse_bd_addr(address, &hci_event[8]); 7979 little_endian_store_16(hci_event, 14, 0); // interval 7980 little_endian_store_16(hci_event, 16, 0); // latency 7981 little_endian_store_16(hci_event, 18, 0); // supervision timeout 7982 hci_event[20] = 0; // master clock accuracy 7983 hci_emit_event(hci_event, sizeof(hci_event), 1); 7984 // emit GAP event, too 7985 uint8_t gap_event[36]; 7986 hci_create_gap_connection_complete_event(hci_event, gap_event); 7987 hci_emit_event(gap_event, sizeof(gap_event), 1); 7988 } 7989 #endif 7990 #endif 7991 7992 static void hci_emit_transport_packet_sent(void){ 7993 // notify upper stack that it might be possible to send again 7994 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7995 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7996 } 7997 7998 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7999 uint8_t event[6]; 8000 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8001 event[1] = sizeof(event) - 2u; 8002 event[2] = 0; // status = OK 8003 little_endian_store_16(event, 3, con_handle); 8004 event[5] = reason; 8005 hci_emit_event(event, sizeof(event), 1); 8006 } 8007 8008 static void hci_emit_nr_connections_changed(void){ 8009 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8010 uint8_t event[3]; 8011 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8012 event[1] = sizeof(event) - 2u; 8013 event[2] = nr_hci_connections(); 8014 hci_emit_event(event, sizeof(event), 1); 8015 } 8016 8017 static void hci_emit_hci_open_failed(void){ 8018 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8019 uint8_t event[2]; 8020 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8021 event[1] = sizeof(event) - 2u; 8022 hci_emit_event(event, sizeof(event), 1); 8023 } 8024 8025 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8026 log_info("hci_emit_dedicated_bonding_result %u ", status); 8027 uint8_t event[9]; 8028 int pos = 0; 8029 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8030 event[pos++] = sizeof(event) - 2u; 8031 event[pos++] = status; 8032 reverse_bd_addr(address, &event[pos]); 8033 hci_emit_event(event, sizeof(event), 1); 8034 } 8035 8036 8037 #ifdef ENABLE_CLASSIC 8038 8039 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8040 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8041 uint8_t event[5]; 8042 int pos = 0; 8043 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8044 event[pos++] = sizeof(event) - 2; 8045 little_endian_store_16(event, 2, con_handle); 8046 pos += 2; 8047 event[pos++] = level; 8048 hci_emit_event(event, sizeof(event), 1); 8049 } 8050 8051 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8052 if (!connection) return LEVEL_0; 8053 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8054 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8055 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8056 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8057 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8058 // LEVEL 4 always requires 128 bit encrytion key size 8059 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8060 security_level = LEVEL_3; 8061 } 8062 return security_level; 8063 } 8064 8065 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8066 uint8_t event[4]; 8067 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8068 event[1] = sizeof(event) - 2; 8069 event[2] = discoverable; 8070 event[3] = connectable; 8071 hci_emit_event(event, sizeof(event), 1); 8072 } 8073 8074 // query if remote side supports eSCO 8075 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8076 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8077 if (!connection) return false; 8078 return (connection->remote_supported_features[0] & 1) != 0; 8079 } 8080 8081 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8082 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8083 if (!connection) return 0; 8084 return connection->remote_supported_sco_packets; 8085 } 8086 8087 static bool hci_ssp_supported(hci_connection_t * connection){ 8088 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8089 return (connection->bonding_flags & mask) == mask; 8090 } 8091 8092 // query if remote side supports SSP 8093 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8094 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8095 if (!connection) return false; 8096 return hci_ssp_supported(connection) ? 1 : 0; 8097 } 8098 8099 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8100 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8101 } 8102 8103 /** 8104 * Check if remote supported features query has completed 8105 */ 8106 bool hci_remote_features_available(hci_con_handle_t handle){ 8107 hci_connection_t * connection = hci_connection_for_handle(handle); 8108 if (!connection) return false; 8109 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8110 } 8111 8112 /** 8113 * Trigger remote supported features query 8114 */ 8115 8116 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8117 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8118 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8119 } 8120 } 8121 8122 void hci_remote_features_query(hci_con_handle_t con_handle){ 8123 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8124 if (!connection) return; 8125 hci_trigger_remote_features_for_connection(connection); 8126 hci_run(); 8127 } 8128 8129 // GAP API 8130 /** 8131 * @bbrief enable/disable bonding. default is enabled 8132 * @praram enabled 8133 */ 8134 void gap_set_bondable_mode(int enable){ 8135 hci_stack->bondable = enable ? 1 : 0; 8136 } 8137 /** 8138 * @brief Get bondable mode. 8139 * @return 1 if bondable 8140 */ 8141 int gap_get_bondable_mode(void){ 8142 return hci_stack->bondable; 8143 } 8144 8145 /** 8146 * @brief map link keys to security levels 8147 */ 8148 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8149 switch (link_key_type){ 8150 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8151 return LEVEL_4; 8152 case COMBINATION_KEY: 8153 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8154 return LEVEL_3; 8155 default: 8156 return LEVEL_2; 8157 } 8158 } 8159 8160 /** 8161 * @brief map link keys to secure connection yes/no 8162 */ 8163 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8164 switch (link_key_type){ 8165 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8166 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8167 return true; 8168 default: 8169 return false; 8170 } 8171 } 8172 8173 /** 8174 * @brief map link keys to authenticated 8175 */ 8176 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8177 switch (link_key_type){ 8178 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8179 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8180 return true; 8181 default: 8182 return false; 8183 } 8184 } 8185 8186 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8187 log_info("gap_mitm_protection_required_for_security_level %u", level); 8188 return level > LEVEL_2; 8189 } 8190 8191 /** 8192 * @brief get current security level 8193 */ 8194 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8195 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8196 if (!connection) return LEVEL_0; 8197 return gap_security_level_for_connection(connection); 8198 } 8199 8200 /** 8201 * @brief request connection to device to 8202 * @result GAP_AUTHENTICATION_RESULT 8203 */ 8204 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8205 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8206 if (!connection){ 8207 hci_emit_security_level(con_handle, LEVEL_0); 8208 return; 8209 } 8210 8211 btstack_assert(hci_is_le_connection(connection) == false); 8212 8213 // 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) 8214 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8215 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8216 requested_level = LEVEL_4; 8217 } 8218 8219 gap_security_level_t current_level = gap_security_level(con_handle); 8220 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8221 requested_level, connection->requested_security_level, current_level); 8222 8223 // authentication active if authentication request was sent or planned level > 0 8224 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8225 if (authentication_active){ 8226 // authentication already active 8227 if (connection->requested_security_level < requested_level){ 8228 // increase requested level as new level is higher 8229 // TODO: handle re-authentication when done 8230 connection->requested_security_level = requested_level; 8231 } 8232 } else { 8233 // no request active, notify if security sufficient 8234 if (requested_level <= current_level){ 8235 hci_emit_security_level(con_handle, current_level); 8236 return; 8237 } 8238 8239 // store request 8240 connection->requested_security_level = requested_level; 8241 8242 // start to authenticate connection 8243 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8244 8245 // request remote features if not already active, also trigger hci_run 8246 hci_remote_features_query(con_handle); 8247 } 8248 } 8249 8250 /** 8251 * @brief start dedicated bonding with device. disconnect after bonding 8252 * @param device 8253 * @param request MITM protection 8254 * @result GAP_DEDICATED_BONDING_COMPLETE 8255 */ 8256 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8257 8258 // create connection state machine 8259 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8260 8261 if (!connection){ 8262 return BTSTACK_MEMORY_ALLOC_FAILED; 8263 } 8264 8265 // delete link key 8266 gap_drop_link_key_for_bd_addr(device); 8267 8268 // configure LEVEL_2/3, dedicated bonding 8269 connection->state = SEND_CREATE_CONNECTION; 8270 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8271 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8272 connection->bonding_flags = BONDING_DEDICATED; 8273 8274 hci_run(); 8275 8276 return 0; 8277 } 8278 8279 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8280 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8281 if (connection == NULL){ 8282 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8283 } 8284 if (defer){ 8285 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8286 } else { 8287 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8288 // trigger disconnect 8289 hci_run(); 8290 } 8291 return ERROR_CODE_SUCCESS; 8292 } 8293 8294 void gap_set_local_name(const char * local_name){ 8295 hci_stack->local_name = local_name; 8296 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8297 // also update EIR if not set by user 8298 if (hci_stack->eir_data == NULL){ 8299 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8300 } 8301 hci_run(); 8302 } 8303 #endif 8304 8305 8306 #ifdef ENABLE_BLE 8307 8308 #ifdef ENABLE_LE_CENTRAL 8309 void gap_start_scan(void){ 8310 hci_stack->le_scanning_enabled = true; 8311 hci_run(); 8312 } 8313 8314 void gap_stop_scan(void){ 8315 hci_stack->le_scanning_enabled = false; 8316 hci_run(); 8317 } 8318 8319 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8320 hci_stack->le_scan_type = scan_type; 8321 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8322 hci_stack->le_scan_interval = scan_interval; 8323 hci_stack->le_scan_window = scan_window; 8324 hci_stack->le_scanning_param_update = true; 8325 hci_run(); 8326 } 8327 8328 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8329 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8330 } 8331 8332 void gap_set_scan_duplicate_filter(bool enabled){ 8333 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8334 } 8335 8336 void gap_set_scan_phys(uint8_t phys){ 8337 // LE Coded and LE 1M PHY 8338 hci_stack->le_scan_phys = phys & 0x05; 8339 } 8340 8341 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8342 // disallow le connection if outgoing already active 8343 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8344 log_error("le connect already active"); 8345 return ERROR_CODE_COMMAND_DISALLOWED; 8346 } 8347 8348 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8349 if (conn == NULL) { 8350 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8351 if (conn == false){ 8352 // alloc failed 8353 log_info("gap_connect: failed to alloc hci_connection_t"); 8354 return BTSTACK_MEMORY_ALLOC_FAILED; 8355 } 8356 } else { 8357 switch (conn->state) { 8358 case RECEIVED_DISCONNECTION_COMPLETE: 8359 // connection was just disconnected, reset state and allow re-connect 8360 conn->role = HCI_ROLE_MASTER; 8361 break; 8362 default: 8363 return ERROR_CODE_COMMAND_DISALLOWED; 8364 } 8365 } 8366 8367 // set le connecting state 8368 if (hci_is_le_connection_type(addr_type)){ 8369 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8370 } 8371 8372 // trigger connect 8373 log_info("gap_connect: send create connection next"); 8374 conn->state = SEND_CREATE_CONNECTION; 8375 hci_run(); 8376 return ERROR_CODE_SUCCESS; 8377 } 8378 8379 // @assumption: only a single outgoing LE Connection exists 8380 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8381 btstack_linked_item_t *it; 8382 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8383 hci_connection_t * conn = (hci_connection_t *) it; 8384 if (hci_is_le_connection(conn)){ 8385 switch (conn->state){ 8386 case SEND_CREATE_CONNECTION: 8387 case SENT_CREATE_CONNECTION: 8388 return conn; 8389 default: 8390 break; 8391 }; 8392 } 8393 } 8394 return NULL; 8395 } 8396 8397 uint8_t gap_connect_cancel(void){ 8398 hci_connection_t * conn; 8399 switch (hci_stack->le_connecting_request){ 8400 case LE_CONNECTING_IDLE: 8401 break; 8402 case LE_CONNECTING_WHITELIST: 8403 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8404 hci_run(); 8405 break; 8406 case LE_CONNECTING_DIRECT: 8407 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8408 conn = gap_get_outgoing_le_connection(); 8409 if (conn == NULL){ 8410 hci_run(); 8411 } else { 8412 switch (conn->state){ 8413 case SEND_CREATE_CONNECTION: 8414 // skip sending create connection and emit event instead 8415 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8416 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8417 btstack_memory_hci_connection_free( conn ); 8418 break; 8419 case SENT_CREATE_CONNECTION: 8420 // let hci_run_general_gap_le cancel outgoing connection 8421 hci_run(); 8422 break; 8423 default: 8424 break; 8425 } 8426 } 8427 break; 8428 default: 8429 btstack_unreachable(); 8430 break; 8431 } 8432 return ERROR_CODE_SUCCESS; 8433 } 8434 8435 /** 8436 * @brief Set connection parameters for outgoing connections 8437 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8438 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8439 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8440 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8441 * @param conn_latency, default: 4 8442 * @param supervision_timeout (unit: 10ms), default: 720 ms 8443 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8444 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8445 */ 8446 8447 void gap_set_connection_phys(uint8_t phys){ 8448 // LE Coded, LE 1M, LE 2M PHY 8449 hci_stack->le_connection_phys = phys & 7; 8450 } 8451 8452 #endif 8453 8454 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8455 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8456 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8457 hci_stack->le_connection_scan_interval = conn_scan_interval; 8458 hci_stack->le_connection_scan_window = conn_scan_window; 8459 hci_stack->le_connection_interval_min = conn_interval_min; 8460 hci_stack->le_connection_interval_max = conn_interval_max; 8461 hci_stack->le_connection_latency = conn_latency; 8462 hci_stack->le_supervision_timeout = supervision_timeout; 8463 hci_stack->le_minimum_ce_length = min_ce_length; 8464 hci_stack->le_maximum_ce_length = max_ce_length; 8465 } 8466 8467 /** 8468 * @brief Updates the connection parameters for a given LE connection 8469 * @param handle 8470 * @param conn_interval_min (unit: 1.25ms) 8471 * @param conn_interval_max (unit: 1.25ms) 8472 * @param conn_latency 8473 * @param supervision_timeout (unit: 10ms) 8474 * @return 0 if ok 8475 */ 8476 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8477 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8478 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8479 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8480 connection->le_conn_interval_min = conn_interval_min; 8481 connection->le_conn_interval_max = conn_interval_max; 8482 connection->le_conn_latency = conn_latency; 8483 connection->le_supervision_timeout = supervision_timeout; 8484 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8485 hci_run(); 8486 return 0; 8487 } 8488 8489 /** 8490 * @brief Request an update of the connection parameter for a given LE connection 8491 * @param handle 8492 * @param conn_interval_min (unit: 1.25ms) 8493 * @param conn_interval_max (unit: 1.25ms) 8494 * @param conn_latency 8495 * @param supervision_timeout (unit: 10ms) 8496 * @return 0 if ok 8497 */ 8498 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8499 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8500 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8501 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8502 connection->le_conn_interval_min = conn_interval_min; 8503 connection->le_conn_interval_max = conn_interval_max; 8504 connection->le_conn_latency = conn_latency; 8505 connection->le_supervision_timeout = supervision_timeout; 8506 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8507 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8508 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8509 return 0; 8510 } 8511 8512 #ifdef ENABLE_LE_PERIPHERAL 8513 8514 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8515 static void hci_assert_advertisement_set_0_ready(void){ 8516 // force advertising set creation for legacy LE Advertising 8517 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8518 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8519 } 8520 } 8521 #endif 8522 8523 /** 8524 * @brief Set Advertisement Data 8525 * @param advertising_data_length 8526 * @param advertising_data (max 31 octets) 8527 * @note data is not copied, pointer has to stay valid 8528 */ 8529 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8530 hci_stack->le_advertisements_data_len = advertising_data_length; 8531 hci_stack->le_advertisements_data = advertising_data; 8532 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8533 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8534 hci_assert_advertisement_set_0_ready(); 8535 #endif 8536 hci_run(); 8537 } 8538 8539 /** 8540 * @brief Set Scan Response Data 8541 * @param advertising_data_length 8542 * @param advertising_data (max 31 octets) 8543 * @note data is not copied, pointer has to stay valid 8544 */ 8545 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8546 hci_stack->le_scan_response_data_len = scan_response_data_length; 8547 hci_stack->le_scan_response_data = scan_response_data; 8548 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8549 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8550 hci_assert_advertisement_set_0_ready(); 8551 #endif 8552 hci_run(); 8553 } 8554 8555 /** 8556 * @brief Set Advertisement Parameters 8557 * @param adv_int_min 8558 * @param adv_int_max 8559 * @param adv_type 8560 * @param direct_address_type 8561 * @param direct_address 8562 * @param channel_map 8563 * @param filter_policy 8564 * 8565 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8566 */ 8567 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8568 uint8_t direct_address_typ, bd_addr_t direct_address, 8569 uint8_t channel_map, uint8_t filter_policy) { 8570 8571 hci_stack->le_advertisements_interval_min = adv_int_min; 8572 hci_stack->le_advertisements_interval_max = adv_int_max; 8573 hci_stack->le_advertisements_type = adv_type; 8574 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8575 hci_stack->le_advertisements_channel_map = channel_map; 8576 hci_stack->le_advertisements_filter_policy = filter_policy; 8577 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8578 6); 8579 8580 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8581 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8582 hci_run(); 8583 } 8584 8585 /** 8586 * @brief Enable/Disable Advertisements 8587 * @param enabled 8588 */ 8589 void gap_advertisements_enable(int enabled){ 8590 if (enabled == 0){ 8591 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8592 } else { 8593 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8594 } 8595 hci_update_advertisements_enabled_for_current_roles(); 8596 hci_run(); 8597 } 8598 8599 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8600 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8601 btstack_linked_list_iterator_t it; 8602 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8603 while (btstack_linked_list_iterator_has_next(&it)){ 8604 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8605 if ( item->advertising_handle == advertising_handle ) { 8606 return item; 8607 } 8608 } 8609 return NULL; 8610 } 8611 8612 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8613 hci_stack->le_resolvable_private_address_update_s = update_s; 8614 hci_run(); 8615 return ERROR_CODE_SUCCESS; 8616 } 8617 8618 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8619 // find free advertisement handle 8620 uint8_t advertisement_handle; 8621 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8622 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8623 } 8624 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8625 // clear 8626 memset(storage, 0, sizeof(le_advertising_set_t)); 8627 // copy params 8628 storage->advertising_handle = advertisement_handle; 8629 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8630 // add to list 8631 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8632 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8633 *out_advertising_handle = advertisement_handle; 8634 // set tasks and start 8635 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8636 hci_run(); 8637 return ERROR_CODE_SUCCESS; 8638 } 8639 8640 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8641 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8642 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8643 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8644 // set tasks and start 8645 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8646 hci_run(); 8647 return ERROR_CODE_SUCCESS; 8648 } 8649 8650 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8651 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8652 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8653 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8654 return ERROR_CODE_SUCCESS; 8655 } 8656 8657 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8658 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8659 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8660 memcpy(advertising_set->random_address, random_address, 6); 8661 // set tasks and start 8662 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8663 hci_run(); 8664 return ERROR_CODE_SUCCESS; 8665 } 8666 8667 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8668 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8669 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8670 advertising_set->adv_data = advertising_data; 8671 advertising_set->adv_data_len = advertising_data_length; 8672 // set tasks and start 8673 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8674 hci_run(); 8675 return ERROR_CODE_SUCCESS; 8676 } 8677 8678 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){ 8679 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8680 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8681 advertising_set->scan_data = scan_response_data; 8682 advertising_set->scan_data_len = scan_response_data_length; 8683 // set tasks and start 8684 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8685 hci_run(); 8686 return ERROR_CODE_SUCCESS; 8687 } 8688 8689 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8690 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8691 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8692 advertising_set->enable_timeout = timeout; 8693 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8694 // set tasks and start 8695 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8696 hci_run(); 8697 return ERROR_CODE_SUCCESS; 8698 } 8699 8700 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8701 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8702 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8703 // set tasks and start 8704 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8705 hci_run(); 8706 return ERROR_CODE_SUCCESS; 8707 } 8708 8709 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8710 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8711 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8712 // set tasks and start 8713 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8714 hci_run(); 8715 return ERROR_CODE_SUCCESS; 8716 } 8717 8718 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8719 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8720 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8721 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8722 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8723 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8724 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8725 // set tasks and start 8726 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8727 hci_run(); 8728 return ERROR_CODE_SUCCESS; 8729 } 8730 8731 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8732 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8733 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8734 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8735 return ERROR_CODE_SUCCESS; 8736 } 8737 8738 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8739 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8740 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8741 advertising_set->periodic_data = periodic_data; 8742 advertising_set->periodic_data_len = periodic_data_length; 8743 // set tasks and start 8744 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8745 hci_run(); 8746 return ERROR_CODE_SUCCESS; 8747 } 8748 8749 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8750 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8751 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8752 // set tasks and start 8753 advertising_set->periodic_include_adi = include_adi; 8754 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8755 hci_run(); 8756 return ERROR_CODE_SUCCESS; 8757 } 8758 8759 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8760 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8761 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8762 // set tasks and start 8763 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8764 hci_run(); 8765 return ERROR_CODE_SUCCESS; 8766 } 8767 8768 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8769 hci_stack->le_past_mode = mode; 8770 hci_stack->le_past_skip = skip; 8771 hci_stack->le_past_sync_timeout = sync_timeout; 8772 hci_stack->le_past_cte_type = cte_type; 8773 hci_stack->le_past_set_default_params = true; 8774 hci_run(); 8775 return ERROR_CODE_SUCCESS; 8776 } 8777 8778 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8779 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8780 if (hci_connection == NULL){ 8781 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8782 } 8783 hci_connection->le_past_sync_handle = sync_handle; 8784 hci_connection->le_past_service_data = service_data; 8785 hci_run(); 8786 return ERROR_CODE_SUCCESS; 8787 } 8788 8789 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8790 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8791 if (hci_connection == NULL){ 8792 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8793 } 8794 hci_connection->le_past_advertising_handle = advertising_handle; 8795 hci_connection->le_past_service_data = service_data; 8796 hci_run(); 8797 return ERROR_CODE_SUCCESS; 8798 } 8799 8800 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8801 8802 #endif 8803 8804 #endif 8805 8806 void hci_le_set_own_address_type(uint8_t own_address_type){ 8807 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8808 if (own_address_type == hci_stack->le_own_addr_type) return; 8809 hci_stack->le_own_addr_type = own_address_type; 8810 8811 #ifdef ENABLE_LE_PERIPHERAL 8812 // update advertisement parameters, too 8813 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8814 hci_run(); 8815 #endif 8816 #ifdef ENABLE_LE_CENTRAL 8817 // note: we don't update scan parameters or modify ongoing connection attempts 8818 #endif 8819 } 8820 8821 void hci_le_random_address_set(const bd_addr_t random_address){ 8822 memcpy(hci_stack->le_random_address, random_address, 6); 8823 hci_stack->le_random_address_set = true; 8824 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8825 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8826 if (hci_extended_advertising_supported()){ 8827 hci_assert_advertisement_set_0_ready(); 8828 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8829 } 8830 #endif 8831 hci_run(); 8832 } 8833 8834 #endif 8835 8836 uint8_t gap_disconnect(hci_con_handle_t handle){ 8837 hci_connection_t * conn = hci_connection_for_handle(handle); 8838 if (!conn){ 8839 hci_emit_disconnection_complete(handle, 0); 8840 return 0; 8841 } 8842 // ignore if already disconnected 8843 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8844 return 0; 8845 } 8846 conn->state = SEND_DISCONNECT; 8847 hci_run(); 8848 return 0; 8849 } 8850 8851 int gap_read_rssi(hci_con_handle_t con_handle){ 8852 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8853 if (hci_connection == NULL) return 0; 8854 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8855 hci_run(); 8856 return 1; 8857 } 8858 8859 /** 8860 * @brief Get connection type 8861 * @param con_handle 8862 * @result connection_type 8863 */ 8864 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8865 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8866 if (!conn) return GAP_CONNECTION_INVALID; 8867 switch (conn->address_type){ 8868 case BD_ADDR_TYPE_LE_PUBLIC: 8869 case BD_ADDR_TYPE_LE_RANDOM: 8870 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8871 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8872 return GAP_CONNECTION_LE; 8873 case BD_ADDR_TYPE_SCO: 8874 return GAP_CONNECTION_SCO; 8875 case BD_ADDR_TYPE_ACL: 8876 return GAP_CONNECTION_ACL; 8877 default: 8878 return GAP_CONNECTION_INVALID; 8879 } 8880 } 8881 8882 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8883 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8884 if (!conn) return HCI_ROLE_INVALID; 8885 return (hci_role_t) conn->role; 8886 } 8887 8888 8889 #ifdef ENABLE_CLASSIC 8890 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8891 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8892 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8893 conn->request_role = role; 8894 hci_run(); 8895 return ERROR_CODE_SUCCESS; 8896 } 8897 #endif 8898 8899 #ifdef ENABLE_BLE 8900 8901 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){ 8902 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8903 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8904 8905 conn->le_phy_update_all_phys = all_phys; 8906 conn->le_phy_update_tx_phys = tx_phys; 8907 conn->le_phy_update_rx_phys = rx_phys; 8908 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8909 8910 hci_run(); 8911 8912 return 0; 8913 } 8914 8915 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8916 8917 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 8918 // incorrect configuration: 8919 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 8920 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 8921 btstack_assert(false); 8922 #endif 8923 8924 // check if already in list 8925 btstack_linked_list_iterator_t it; 8926 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8927 while (btstack_linked_list_iterator_has_next(&it)) { 8928 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8929 if (entry->address_type != address_type) { 8930 continue; 8931 } 8932 if (memcmp(entry->address, address, 6) != 0) { 8933 continue; 8934 } 8935 8936 // if already on controller: 8937 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8938 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8939 // drop remove request 8940 entry->state = LE_WHITELIST_ON_CONTROLLER; 8941 return ERROR_CODE_SUCCESS; 8942 } else { 8943 // disallow as already on controller 8944 return ERROR_CODE_COMMAND_DISALLOWED; 8945 } 8946 } 8947 8948 // assume scheduled to add 8949 return ERROR_CODE_COMMAND_DISALLOWED; 8950 } 8951 8952 // alloc and add to list 8953 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8954 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8955 entry->address_type = address_type; 8956 (void)memcpy(entry->address, address, 6); 8957 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8958 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8959 return ERROR_CODE_SUCCESS; 8960 } 8961 8962 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8963 btstack_linked_list_iterator_t it; 8964 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8965 while (btstack_linked_list_iterator_has_next(&it)){ 8966 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8967 if (entry->address_type != address_type) { 8968 continue; 8969 } 8970 if (memcmp(entry->address, address, 6) != 0) { 8971 continue; 8972 } 8973 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8974 // remove from controller if already present 8975 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8976 } else { 8977 // directly remove entry from whitelist 8978 btstack_linked_list_iterator_remove(&it); 8979 btstack_memory_whitelist_entry_free(entry); 8980 } 8981 return ERROR_CODE_SUCCESS; 8982 } 8983 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8984 } 8985 8986 static void hci_whitelist_clear(void){ 8987 btstack_linked_list_iterator_t it; 8988 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8989 while (btstack_linked_list_iterator_has_next(&it)){ 8990 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8991 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8992 // remove from controller if already present 8993 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8994 continue; 8995 } 8996 // directly remove entry from whitelist 8997 btstack_linked_list_iterator_remove(&it); 8998 btstack_memory_whitelist_entry_free(entry); 8999 } 9000 } 9001 9002 /** 9003 * @brief Clear Whitelist 9004 * @return 0 if ok 9005 */ 9006 uint8_t gap_whitelist_clear(void){ 9007 hci_whitelist_clear(); 9008 hci_run(); 9009 return ERROR_CODE_SUCCESS; 9010 } 9011 9012 /** 9013 * @brief Add Device to Whitelist 9014 * @param address_typ 9015 * @param address 9016 * @return 0 if ok 9017 */ 9018 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9019 uint8_t status = hci_whitelist_add(address_type, address); 9020 if (status){ 9021 return status; 9022 } 9023 hci_run(); 9024 return ERROR_CODE_SUCCESS; 9025 } 9026 9027 /** 9028 * @brief Remove Device from Whitelist 9029 * @param address_typ 9030 * @param address 9031 * @return 0 if ok 9032 */ 9033 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9034 uint8_t status = hci_whitelist_remove(address_type, address); 9035 if (status){ 9036 return status; 9037 } 9038 hci_run(); 9039 return ERROR_CODE_SUCCESS; 9040 } 9041 9042 #ifdef ENABLE_LE_CENTRAL 9043 /** 9044 * @brief Connect with Whitelist 9045 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9046 * @return - if ok 9047 */ 9048 uint8_t gap_connect_with_whitelist(void){ 9049 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9050 return ERROR_CODE_COMMAND_DISALLOWED; 9051 } 9052 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9053 hci_run(); 9054 return ERROR_CODE_SUCCESS; 9055 } 9056 9057 /** 9058 * @brief Auto Connection Establishment - Start Connecting to device 9059 * @param address_typ 9060 * @param address 9061 * @return 0 if ok 9062 */ 9063 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9064 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9065 return ERROR_CODE_COMMAND_DISALLOWED; 9066 } 9067 9068 uint8_t status = hci_whitelist_add(address_type, address); 9069 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9070 return status; 9071 } 9072 9073 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9074 9075 hci_run(); 9076 return ERROR_CODE_SUCCESS; 9077 } 9078 9079 /** 9080 * @brief Auto Connection Establishment - Stop Connecting to device 9081 * @param address_typ 9082 * @param address 9083 * @return 0 if ok 9084 */ 9085 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9086 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9087 return ERROR_CODE_COMMAND_DISALLOWED; 9088 } 9089 9090 hci_whitelist_remove(address_type, address); 9091 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9092 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9093 } 9094 hci_run(); 9095 return 0; 9096 } 9097 9098 /** 9099 * @brief Auto Connection Establishment - Stop everything 9100 * @note Convenience function to stop all active auto connection attempts 9101 */ 9102 uint8_t gap_auto_connection_stop_all(void){ 9103 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9104 return ERROR_CODE_COMMAND_DISALLOWED; 9105 } 9106 hci_whitelist_clear(); 9107 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9108 hci_run(); 9109 return ERROR_CODE_SUCCESS; 9110 } 9111 9112 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9113 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9114 if (!conn) return 0; 9115 return conn->le_connection_interval; 9116 } 9117 #endif 9118 #endif 9119 9120 #ifdef ENABLE_CLASSIC 9121 /** 9122 * @brief Set Extended Inquiry Response data 9123 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9124 * @note has to be done before stack starts up 9125 */ 9126 void gap_set_extended_inquiry_response(const uint8_t * data){ 9127 hci_stack->eir_data = data; 9128 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9129 hci_run(); 9130 } 9131 9132 /** 9133 * @brief Start GAP Classic Inquiry 9134 * @param duration in 1.28s units 9135 * @return 0 if ok 9136 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9137 */ 9138 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9139 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9140 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9141 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9142 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9143 } 9144 hci_stack->inquiry_state = duration_in_1280ms_units; 9145 hci_stack->inquiry_max_period_length = 0; 9146 hci_stack->inquiry_min_period_length = 0; 9147 hci_run(); 9148 return 0; 9149 } 9150 9151 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9152 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9153 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9154 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9155 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9156 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9157 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9158 9159 hci_stack->inquiry_state = duration; 9160 hci_stack->inquiry_max_period_length = max_period_length; 9161 hci_stack->inquiry_min_period_length = min_period_length; 9162 hci_run(); 9163 return 0; 9164 } 9165 9166 /** 9167 * @brief Stop GAP Classic Inquiry 9168 * @return 0 if ok 9169 */ 9170 int gap_inquiry_stop(void){ 9171 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9172 // emit inquiry complete event, before it even started 9173 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9174 hci_emit_event(event, sizeof(event), 1); 9175 return 0; 9176 } 9177 switch (hci_stack->inquiry_state){ 9178 case GAP_INQUIRY_STATE_ACTIVE: 9179 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9180 hci_run(); 9181 return ERROR_CODE_SUCCESS; 9182 case GAP_INQUIRY_STATE_PERIODIC: 9183 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9184 hci_run(); 9185 return ERROR_CODE_SUCCESS; 9186 default: 9187 return ERROR_CODE_COMMAND_DISALLOWED; 9188 } 9189 } 9190 9191 void gap_inquiry_set_lap(uint32_t lap){ 9192 hci_stack->inquiry_lap = lap; 9193 } 9194 9195 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9196 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9197 hci_stack->inquiry_scan_window = inquiry_scan_window; 9198 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9199 hci_run(); 9200 } 9201 9202 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9203 { 9204 hci_stack->inquiry_tx_power_level = tx_power; 9205 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9206 hci_run(); 9207 } 9208 9209 9210 /** 9211 * @brief Remote Name Request 9212 * @param addr 9213 * @param page_scan_repetition_mode 9214 * @param clock_offset only used when bit 15 is set 9215 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9216 */ 9217 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9218 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9219 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9220 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9221 hci_stack->remote_name_clock_offset = clock_offset; 9222 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9223 hci_run(); 9224 return 0; 9225 } 9226 9227 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9228 hci_stack->gap_pairing_state = state; 9229 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9230 hci_run(); 9231 return 0; 9232 } 9233 9234 /** 9235 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9236 * @param addr 9237 * @param pin_data 9238 * @param pin_len 9239 * @return 0 if ok 9240 */ 9241 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9242 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9243 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9244 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9245 hci_stack->gap_pairing_pin_len = pin_len; 9246 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9247 } 9248 9249 /** 9250 * @brief Legacy Pairing Pin Code Response 9251 * @param addr 9252 * @param pin 9253 * @return 0 if ok 9254 */ 9255 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9256 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9257 } 9258 9259 /** 9260 * @brief Abort Legacy Pairing 9261 * @param addr 9262 * @param pin 9263 * @return 0 if ok 9264 */ 9265 int gap_pin_code_negative(bd_addr_t addr){ 9266 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9267 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9268 } 9269 9270 /** 9271 * @brief SSP Passkey Response 9272 * @param addr 9273 * @param passkey 9274 * @return 0 if ok 9275 */ 9276 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9277 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9278 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9279 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9280 } 9281 9282 /** 9283 * @brief Abort SSP Passkey Entry/Pairing 9284 * @param addr 9285 * @param pin 9286 * @return 0 if ok 9287 */ 9288 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9289 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9290 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9291 } 9292 9293 /** 9294 * @brief Accept SSP Numeric Comparison 9295 * @param addr 9296 * @param passkey 9297 * @return 0 if ok 9298 */ 9299 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9300 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9301 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9302 } 9303 9304 /** 9305 * @brief Abort SSP Numeric Comparison/Pairing 9306 * @param addr 9307 * @param pin 9308 * @return 0 if ok 9309 */ 9310 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9311 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9312 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9313 } 9314 9315 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9316 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9317 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9318 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9319 connectionSetAuthenticationFlags(conn, flag); 9320 hci_run(); 9321 return ERROR_CODE_SUCCESS; 9322 } 9323 #endif 9324 9325 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9326 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9327 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9328 } 9329 9330 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9331 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9332 } 9333 #endif 9334 9335 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9336 /** 9337 * @brief Report Remote OOB Data 9338 * @param bd_addr 9339 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9340 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9341 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9342 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9343 */ 9344 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){ 9345 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9346 if (connection == NULL) { 9347 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9348 } 9349 connection->classic_oob_c_192 = c_192; 9350 connection->classic_oob_r_192 = r_192; 9351 9352 // ignore P-256 if not supported by us 9353 if (hci_stack->secure_connections_active){ 9354 connection->classic_oob_c_256 = c_256; 9355 connection->classic_oob_r_256 = r_256; 9356 } 9357 9358 return ERROR_CODE_SUCCESS; 9359 } 9360 /** 9361 * @brief Generate new OOB data 9362 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9363 */ 9364 void gap_ssp_generate_oob_data(void){ 9365 hci_stack->classic_read_local_oob_data = true; 9366 hci_run(); 9367 } 9368 9369 #endif 9370 9371 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9372 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9373 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9374 if (connection == NULL) { 9375 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9376 } 9377 9378 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9379 connection->link_key_type = type; 9380 9381 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9382 } 9383 9384 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9385 /** 9386 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9387 * @param inquiry_mode see bluetooth_defines.h 9388 */ 9389 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9390 hci_stack->inquiry_mode = inquiry_mode; 9391 } 9392 9393 /** 9394 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9395 */ 9396 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9397 hci_stack->sco_voice_setting = voice_setting; 9398 } 9399 9400 /** 9401 * @brief Get SCO Voice Setting 9402 * @return current voice setting 9403 */ 9404 uint16_t hci_get_sco_voice_setting(void){ 9405 return hci_stack->sco_voice_setting; 9406 } 9407 9408 static int hci_have_usb_transport(void){ 9409 if (!hci_stack->hci_transport) return 0; 9410 const char * transport_name = hci_stack->hci_transport->name; 9411 if (!transport_name) return 0; 9412 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9413 } 9414 9415 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9416 uint16_t sco_packet_length = 0; 9417 9418 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9419 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9420 int multiplier; 9421 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9422 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9423 multiplier = 2; 9424 } else { 9425 multiplier = 1; 9426 } 9427 #endif 9428 9429 #ifdef ENABLE_SCO_OVER_HCI 9430 if (hci_have_usb_transport()){ 9431 // see Core Spec for H2 USB Transfer. 9432 // 3 byte SCO header + 24 bytes per connection 9433 // @note multiple sco connections not supported currently 9434 sco_packet_length = 3 + 24 * multiplier; 9435 } else { 9436 // 3 byte SCO header + SCO packet length over the air 9437 sco_packet_length = 3 + payload_size * multiplier; 9438 // assert that it still fits inside an SCO buffer 9439 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9440 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9441 } 9442 } 9443 #endif 9444 #ifdef HAVE_SCO_TRANSPORT 9445 // 3 byte SCO header + SCO packet length over the air 9446 sco_packet_length = 3 + payload_size * multiplier; 9447 // assert that it still fits inside an SCO buffer 9448 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9449 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9450 } 9451 #endif 9452 return sco_packet_length; 9453 } 9454 9455 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9456 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9457 if (connection != NULL){ 9458 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9459 } 9460 return 0; 9461 } 9462 9463 uint16_t hci_get_sco_packet_length(void){ 9464 btstack_linked_list_iterator_t it; 9465 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9466 while (btstack_linked_list_iterator_has_next(&it)){ 9467 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9468 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9469 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9470 } 9471 } 9472 return 0; 9473 } 9474 9475 /** 9476 * @brief Sets the master/slave policy 9477 * @param policy (0: attempt to become master, 1: let connecting device decide) 9478 */ 9479 void hci_set_master_slave_policy(uint8_t policy){ 9480 hci_stack->master_slave_policy = policy; 9481 } 9482 9483 #endif 9484 9485 HCI_STATE hci_get_state(void){ 9486 return hci_stack->state; 9487 } 9488 9489 #ifdef ENABLE_CLASSIC 9490 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9491 hci_stack->gap_classic_accept_callback = accept_callback; 9492 } 9493 #endif 9494 9495 /** 9496 * @brief Set callback for Bluetooth Hardware Error 9497 */ 9498 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9499 hci_stack->hardware_error_callback = fn; 9500 } 9501 9502 void hci_disconnect_all(void){ 9503 btstack_linked_list_iterator_t it; 9504 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9505 while (btstack_linked_list_iterator_has_next(&it)){ 9506 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9507 if (con->state == SENT_DISCONNECT) continue; 9508 con->state = SEND_DISCONNECT; 9509 } 9510 hci_run(); 9511 } 9512 9513 uint16_t hci_get_manufacturer(void){ 9514 return hci_stack->manufacturer; 9515 } 9516 9517 #ifdef ENABLE_BLE 9518 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9519 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9520 if (!hci_con) return NULL; 9521 return &hci_con->sm_connection; 9522 } 9523 9524 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9525 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9526 #endif 9527 9528 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9529 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9530 if (hci_connection == NULL) return 0; 9531 if (hci_is_le_connection(hci_connection)){ 9532 #ifdef ENABLE_BLE 9533 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9534 if (sm_conn->sm_connection_encrypted != 0u) { 9535 return sm_conn->sm_actual_encryption_key_size; 9536 } 9537 #endif 9538 } else { 9539 #ifdef ENABLE_CLASSIC 9540 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9541 return hci_connection->encryption_key_size; 9542 } 9543 #endif 9544 } 9545 return 0; 9546 } 9547 9548 bool gap_authenticated(hci_con_handle_t con_handle){ 9549 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9550 if (hci_connection == NULL) return false; 9551 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 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9557 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9558 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9559 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9560 #endif 9561 #ifdef ENABLE_CLASSIC 9562 case BD_ADDR_TYPE_SCO: 9563 case BD_ADDR_TYPE_ACL: 9564 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9565 #endif 9566 default: 9567 return false; 9568 } 9569 } 9570 9571 bool gap_secure_connection(hci_con_handle_t con_handle){ 9572 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9573 if (hci_connection == NULL) return 0; 9574 9575 switch (hci_connection->address_type){ 9576 #ifdef ENABLE_BLE 9577 case BD_ADDR_TYPE_LE_PUBLIC: 9578 case BD_ADDR_TYPE_LE_RANDOM: 9579 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9580 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9581 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9582 return hci_connection->sm_connection.sm_connection_sc; 9583 #endif 9584 #ifdef ENABLE_CLASSIC 9585 case BD_ADDR_TYPE_SCO: 9586 case BD_ADDR_TYPE_ACL: 9587 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9588 #endif 9589 default: 9590 return false; 9591 } 9592 } 9593 9594 bool gap_bonded(hci_con_handle_t con_handle){ 9595 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9596 if (hci_connection == NULL) return 0; 9597 9598 #ifdef ENABLE_CLASSIC 9599 link_key_t link_key; 9600 link_key_type_t link_key_type; 9601 #endif 9602 switch (hci_connection->address_type){ 9603 #ifdef ENABLE_BLE 9604 case BD_ADDR_TYPE_LE_PUBLIC: 9605 case BD_ADDR_TYPE_LE_RANDOM: 9606 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9607 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9608 return hci_connection->sm_connection.sm_le_db_index >= 0; 9609 #endif 9610 #ifdef ENABLE_CLASSIC 9611 case BD_ADDR_TYPE_SCO: 9612 case BD_ADDR_TYPE_ACL: 9613 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9614 #endif 9615 default: 9616 return false; 9617 } 9618 } 9619 9620 #ifdef ENABLE_BLE 9621 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9622 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9623 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9624 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9625 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9626 return sm_conn->sm_connection_authorization_state; 9627 } 9628 #endif 9629 9630 #ifdef ENABLE_CLASSIC 9631 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){ 9632 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9633 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9634 conn->sniff_min_interval = sniff_min_interval; 9635 conn->sniff_max_interval = sniff_max_interval; 9636 conn->sniff_attempt = sniff_attempt; 9637 conn->sniff_timeout = sniff_timeout; 9638 hci_run(); 9639 return 0; 9640 } 9641 9642 /** 9643 * @brief Exit Sniff mode 9644 * @param con_handle 9645 @ @return 0 if ok 9646 */ 9647 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9648 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9649 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9650 conn->sniff_min_interval = 0xffff; 9651 hci_run(); 9652 return 0; 9653 } 9654 9655 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){ 9656 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9657 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9658 conn->sniff_subrating_max_latency = max_latency; 9659 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9660 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9661 hci_run(); 9662 return ERROR_CODE_SUCCESS; 9663 } 9664 9665 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){ 9666 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9667 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9668 conn->qos_service_type = service_type; 9669 conn->qos_token_rate = token_rate; 9670 conn->qos_peak_bandwidth = peak_bandwidth; 9671 conn->qos_latency = latency; 9672 conn->qos_delay_variation = delay_variation; 9673 hci_run(); 9674 return ERROR_CODE_SUCCESS; 9675 } 9676 9677 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9678 hci_stack->new_page_scan_interval = page_scan_interval; 9679 hci_stack->new_page_scan_window = page_scan_window; 9680 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9681 hci_run(); 9682 } 9683 9684 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9685 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9686 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9687 hci_run(); 9688 } 9689 9690 void gap_set_page_timeout(uint16_t page_timeout){ 9691 hci_stack->page_timeout = page_timeout; 9692 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9693 hci_run(); 9694 } 9695 9696 #endif 9697 9698 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9699 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9700 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9701 if (le_device_db_index >= le_device_db_max_count()) return; 9702 uint8_t offset = le_device_db_index >> 3; 9703 uint8_t mask = 1 << (le_device_db_index & 7); 9704 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9705 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9706 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9707 // note: go back to remove entries, otherwise, a remove + add will skip the add 9708 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9709 } 9710 } 9711 9712 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9713 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9714 if (le_device_db_index >= le_device_db_max_count()) return; 9715 uint8_t offset = le_device_db_index >> 3; 9716 uint8_t mask = 1 << (le_device_db_index & 7); 9717 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9718 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9719 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9720 } 9721 } 9722 9723 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9724 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9725 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9726 } 9727 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9728 // restart le resolving list update 9729 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9730 } 9731 return ERROR_CODE_SUCCESS; 9732 } 9733 9734 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9735 hci_stack->le_privacy_mode = privacy_mode; 9736 } 9737 #endif 9738 9739 #ifdef ENABLE_BLE 9740 #ifdef ENABLE_LE_CENTRAL 9741 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9742 9743 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9744 9745 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9746 // incorrect configuration: 9747 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9748 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9749 btstack_assert(false); 9750 #endif 9751 9752 // check if already in list 9753 btstack_linked_list_iterator_t it; 9754 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9755 while (btstack_linked_list_iterator_has_next(&it)) { 9756 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9757 if (entry->sid != advertising_sid) { 9758 continue; 9759 } 9760 if (entry->address_type != address_type) { 9761 continue; 9762 } 9763 if (memcmp(entry->address, address, 6) != 0) { 9764 continue; 9765 } 9766 // disallow if already scheduled to add 9767 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9768 return ERROR_CODE_COMMAND_DISALLOWED; 9769 } 9770 // still on controller, but scheduled to remove -> re-add 9771 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9772 return ERROR_CODE_SUCCESS; 9773 } 9774 // alloc and add to list 9775 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9776 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9777 entry->sid = advertising_sid; 9778 entry->address_type = address_type; 9779 (void)memcpy(entry->address, address, 6); 9780 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9781 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9782 return ERROR_CODE_SUCCESS; 9783 } 9784 9785 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9786 btstack_linked_list_iterator_t it; 9787 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9788 while (btstack_linked_list_iterator_has_next(&it)){ 9789 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9790 if (entry->sid != advertising_sid) { 9791 continue; 9792 } 9793 if (entry->address_type != address_type) { 9794 continue; 9795 } 9796 if (memcmp(entry->address, address, 6) != 0) { 9797 continue; 9798 } 9799 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9800 // remove from controller if already present 9801 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9802 } else { 9803 // directly remove entry from whitelist 9804 btstack_linked_list_iterator_remove(&it); 9805 btstack_memory_periodic_advertiser_list_entry_free(entry); 9806 } 9807 return ERROR_CODE_SUCCESS; 9808 } 9809 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9810 } 9811 9812 static void hci_periodic_advertiser_list_clear(void){ 9813 btstack_linked_list_iterator_t it; 9814 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9815 while (btstack_linked_list_iterator_has_next(&it)){ 9816 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9817 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9818 // remove from controller if already present 9819 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9820 continue; 9821 } 9822 // directly remove entry from whitelist 9823 btstack_linked_list_iterator_remove(&it); 9824 btstack_memory_periodic_advertiser_list_entry_free(entry); 9825 } 9826 } 9827 9828 uint8_t gap_periodic_advertiser_list_clear(void){ 9829 hci_periodic_advertiser_list_clear(); 9830 hci_run(); 9831 return ERROR_CODE_SUCCESS; 9832 } 9833 9834 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9835 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9836 if (status){ 9837 return status; 9838 } 9839 hci_run(); 9840 return ERROR_CODE_SUCCESS; 9841 } 9842 9843 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9844 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9845 if (status){ 9846 return status; 9847 } 9848 hci_run(); 9849 return ERROR_CODE_SUCCESS; 9850 } 9851 9852 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9853 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9854 // abort if already active 9855 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9856 return ERROR_CODE_COMMAND_DISALLOWED; 9857 } 9858 // store request 9859 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9860 hci_stack->le_periodic_sync_options = options; 9861 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9862 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9863 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9864 hci_stack->le_periodic_sync_skip = skip; 9865 hci_stack->le_periodic_sync_timeout = sync_timeout; 9866 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9867 9868 hci_run(); 9869 return ERROR_CODE_SUCCESS; 9870 } 9871 9872 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9873 // abort if not requested 9874 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9875 return ERROR_CODE_COMMAND_DISALLOWED; 9876 } 9877 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9878 hci_run(); 9879 return ERROR_CODE_SUCCESS; 9880 } 9881 9882 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9883 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9884 return ERROR_CODE_COMMAND_DISALLOWED; 9885 } 9886 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9887 hci_run(); 9888 return ERROR_CODE_SUCCESS; 9889 } 9890 9891 #endif 9892 #endif 9893 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9894 static hci_iso_stream_t * 9895 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9896 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9897 if (iso_stream != NULL){ 9898 iso_stream->iso_type = iso_type; 9899 iso_stream->state = state; 9900 iso_stream->group_id = group_id; 9901 iso_stream->stream_id = stream_id; 9902 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9903 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9904 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9905 } 9906 return iso_stream; 9907 } 9908 9909 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9910 btstack_linked_list_iterator_t it; 9911 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9912 while (btstack_linked_list_iterator_has_next(&it)){ 9913 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9914 if (iso_stream->cis_handle == con_handle ) { 9915 return iso_stream; 9916 } 9917 } 9918 return NULL; 9919 } 9920 9921 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9922 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9923 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9924 btstack_memory_hci_iso_stream_free(iso_stream); 9925 } 9926 9927 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9928 btstack_linked_list_iterator_t it; 9929 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9930 while (btstack_linked_list_iterator_has_next(&it)){ 9931 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9932 if ((iso_stream->group_id == group_id) && 9933 (iso_stream->iso_type == iso_type)){ 9934 btstack_linked_list_iterator_remove(&it); 9935 btstack_memory_hci_iso_stream_free(iso_stream); 9936 } 9937 } 9938 } 9939 9940 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9941 btstack_linked_list_iterator_t it; 9942 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9943 while (btstack_linked_list_iterator_has_next(&it)){ 9944 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9945 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9946 (iso_stream->group_id == group_id)){ 9947 btstack_linked_list_iterator_remove(&it); 9948 btstack_memory_hci_iso_stream_free(iso_stream); 9949 } 9950 } 9951 } 9952 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9953 btstack_linked_list_iterator_t it; 9954 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9955 while (btstack_linked_list_iterator_has_next(&it)){ 9956 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9957 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9958 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9959 } 9960 } 9961 } 9962 9963 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9964 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9965 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9966 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9967 return (sdu_len_offset + 2 + sdu_len) == size; 9968 } 9969 9970 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 9971 if (iso_stream == NULL){ 9972 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 9973 return; 9974 } 9975 9976 if (hci_stack->iso_packet_handler == NULL) { 9977 return; 9978 } 9979 9980 // parse header 9981 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 9982 uint16_t data_total_length = little_endian_read_16(packet, 2); 9983 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 9984 9985 // assert packet is complete 9986 if ((data_total_length + 4u) != size){ 9987 return; 9988 } 9989 9990 if ((pb_flag & 0x01) == 0){ 9991 if (pb_flag == 0x02){ 9992 // The ISO_SDU_Fragment field contains a header and a complete SDU. 9993 if (hci_iso_sdu_complete(packet, size)) { 9994 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9995 } 9996 } else { 9997 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9998 if (size > sizeof(iso_stream->reassembly_buffer)){ 9999 return; 10000 } 10001 memcpy(iso_stream->reassembly_buffer, packet, size); 10002 // fix pb_flag 10003 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10004 iso_stream->reassembly_pos = size; 10005 } 10006 } else { 10007 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10008 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10009 if (ts_flag != 0){ 10010 return; 10011 } 10012 // append fragment 10013 if (iso_stream->reassembly_pos == 0){ 10014 return; 10015 } 10016 10017 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10018 // reset reassembly buffer 10019 iso_stream->reassembly_pos = 0; 10020 return; 10021 } 10022 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10023 iso_stream->reassembly_pos += data_total_length; 10024 10025 // deliver if last fragment and SDU complete 10026 if (pb_flag == 0x03){ 10027 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10028 // fix data_total_length 10029 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10030 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10031 } 10032 // reset reassembly buffer 10033 iso_stream->reassembly_pos = 0; 10034 } 10035 } 10036 } 10037 10038 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10039 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10040 uint16_t pos = 0; 10041 event[pos++] = HCI_EVENT_META_GAP; 10042 event[pos++] = 4 + (2 * big->num_bis); 10043 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10044 event[pos++] = status; 10045 event[pos++] = big->big_handle; 10046 event[pos++] = big->num_bis; 10047 uint8_t i; 10048 for (i=0;i<big->num_bis;i++){ 10049 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10050 pos += 2; 10051 } 10052 hci_emit_event(event, pos, 0); 10053 } 10054 10055 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10056 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10057 uint16_t pos = 0; 10058 event[pos++] = HCI_EVENT_META_GAP; 10059 event[pos++] = 4 + (2 * cig->num_cis); 10060 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10061 event[pos++] = status; 10062 event[pos++] = cig->cig_id; 10063 event[pos++] = cig->num_cis; 10064 uint8_t i; 10065 for (i=0;i<cig->num_cis;i++){ 10066 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10067 pos += 2; 10068 } 10069 hci_emit_event(event, pos, 0); 10070 } 10071 10072 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10073 uint16_t pos = 0; 10074 event[pos++] = HCI_EVENT_META_GAP; 10075 event[pos++] = 8; 10076 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10077 event[pos++] = status; 10078 event[pos++] = iso_stream->group_id; 10079 event[pos++] = iso_stream->stream_id; 10080 little_endian_store_16(event, pos, iso_stream->cis_handle); 10081 pos += 2; 10082 little_endian_store_16(event, pos, iso_stream->acl_handle); 10083 pos += 2; 10084 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10085 pos += 2; 10086 event[pos++] = iso_stream->number_of_subevents; 10087 event[pos++] = iso_stream->burst_number_c_to_p; 10088 event[pos++] = iso_stream->burst_number_p_to_c; 10089 event[pos++] = iso_stream->flush_timeout_c_to_p; 10090 event[pos++] = iso_stream->flush_timeout_p_to_c; 10091 return pos; 10092 } 10093 10094 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10095 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10096 // cache data before finalizing struct 10097 uint8_t event [17]; 10098 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10099 btstack_assert(pos <= sizeof(event)); 10100 if (status != ERROR_CODE_SUCCESS){ 10101 hci_iso_stream_finalize(iso_stream); 10102 } 10103 hci_emit_event(event, pos, 0); 10104 } 10105 10106 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10107 uint8_t event [4]; 10108 uint16_t pos = 0; 10109 event[pos++] = HCI_EVENT_META_GAP; 10110 event[pos++] = 2; 10111 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10112 event[pos++] = big->big_handle; 10113 hci_emit_event(event, pos, 0); 10114 } 10115 10116 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10117 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10118 uint16_t pos = 0; 10119 event[pos++] = HCI_EVENT_META_GAP; 10120 event[pos++] = 4; 10121 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10122 event[pos++] = status; 10123 event[pos++] = big_sync->big_handle; 10124 event[pos++] = big_sync->num_bis; 10125 uint8_t i; 10126 for (i=0;i<big_sync->num_bis;i++){ 10127 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10128 pos += 2; 10129 } 10130 hci_emit_event(event, pos, 0); 10131 } 10132 10133 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10134 uint8_t event [4]; 10135 uint16_t pos = 0; 10136 event[pos++] = HCI_EVENT_META_GAP; 10137 event[pos++] = 2; 10138 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10139 event[pos++] = big_handle; 10140 hci_emit_event(event, pos, 0); 10141 } 10142 10143 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10144 uint8_t event[6]; 10145 uint16_t pos = 0; 10146 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10147 event[pos++] = sizeof(event) - 2; 10148 event[pos++] = big->big_handle; 10149 event[pos++] = bis_index; 10150 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10151 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10152 } 10153 10154 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10155 uint8_t event[4]; 10156 uint16_t pos = 0; 10157 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10158 event[pos++] = sizeof(event) - 2; 10159 little_endian_store_16(event, pos, cis_con_handle); 10160 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10161 } 10162 10163 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10164 btstack_linked_list_iterator_t it; 10165 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10166 while (btstack_linked_list_iterator_has_next(&it)){ 10167 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10168 if ( big->big_handle == big_handle ) { 10169 return big; 10170 } 10171 } 10172 return NULL; 10173 } 10174 10175 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10176 btstack_linked_list_iterator_t it; 10177 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10178 while (btstack_linked_list_iterator_has_next(&it)){ 10179 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10180 if ( big_sync->big_handle == big_handle ) { 10181 return big_sync; 10182 } 10183 } 10184 return NULL; 10185 } 10186 10187 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10188 hci_stack->iso_packets_to_queue = num_packets; 10189 } 10190 10191 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10192 btstack_linked_list_iterator_t it; 10193 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10194 while (btstack_linked_list_iterator_has_next(&it)){ 10195 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10196 if ( cig->cig_id == cig_id ) { 10197 return cig; 10198 } 10199 } 10200 return NULL; 10201 } 10202 10203 static void hci_iso_notify_can_send_now(void){ 10204 10205 // BIG 10206 10207 btstack_linked_list_iterator_t it; 10208 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10209 while (btstack_linked_list_iterator_has_next(&it)){ 10210 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10211 // track number completed packet timestamps 10212 if (big->num_completed_timestamp_current_valid){ 10213 big->num_completed_timestamp_current_valid = false; 10214 if (big->num_completed_timestamp_previous_valid){ 10215 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10216 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10217 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10218 big->num_completed_timestamp_previous_ms); 10219 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10220 // to catch up, skip packet on all BIS 10221 uint8_t i; 10222 for (i=0;i<big->num_bis;i++){ 10223 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10224 if (iso_stream){ 10225 iso_stream->num_packets_to_skip++; 10226 } 10227 } 10228 } 10229 } 10230 big->num_completed_timestamp_previous_valid = true; 10231 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10232 } 10233 10234 if (big->can_send_now_requested){ 10235 // check if no outgoing iso packets pending and no can send now have to be emitted 10236 uint8_t i; 10237 bool can_send = true; 10238 uint8_t num_iso_queued_minimum = 0; 10239 for (i=0;i<big->num_bis;i++){ 10240 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10241 if (iso_stream == NULL) continue; 10242 // handle case where individual ISO packet was sent too late: 10243 // for each additionally queued packet, a new one needs to get skipped 10244 if (i==0){ 10245 num_iso_queued_minimum = iso_stream->num_packets_sent; 10246 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10247 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10248 iso_stream->num_packets_to_skip += num_packets_to_skip; 10249 iso_stream->num_packets_sent -= num_packets_to_skip; 10250 } 10251 // check if we can send now 10252 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10253 can_send = false; 10254 break; 10255 } 10256 } 10257 if (can_send){ 10258 // propagate can send now to individual streams 10259 big->can_send_now_requested = false; 10260 for (i=0;i<big->num_bis;i++){ 10261 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10262 iso_stream->emit_ready_to_send = true; 10263 } 10264 } 10265 } 10266 } 10267 10268 if (hci_stack->hci_packet_buffer_reserved) return; 10269 10270 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10271 while (btstack_linked_list_iterator_has_next(&it)){ 10272 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10273 // report bis ready 10274 uint8_t i; 10275 for (i=0;i<big->num_bis;i++){ 10276 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10277 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10278 iso_stream->emit_ready_to_send = false; 10279 hci_emit_bis_can_send_now(big, i); 10280 break; 10281 } 10282 } 10283 } 10284 10285 // CIS 10286 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10287 while (btstack_linked_list_iterator_has_next(&it)) { 10288 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10289 if ((iso_stream->can_send_now_requested) && 10290 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10291 iso_stream->can_send_now_requested = false; 10292 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10293 } 10294 } 10295 } 10296 10297 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10298 // make big handle unique and usuable for big and big sync 10299 if (hci_big_for_handle(big_handle) != NULL){ 10300 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10301 } 10302 if (hci_big_sync_for_handle(big_handle) != NULL){ 10303 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10304 } 10305 if (num_bis == 0){ 10306 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10307 } 10308 if (num_bis > MAX_NR_BIS){ 10309 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10310 } 10311 10312 // reserve ISO Streams 10313 uint8_t i; 10314 uint8_t status = ERROR_CODE_SUCCESS; 10315 for (i=0;i<num_bis;i++){ 10316 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10317 if (iso_stream == NULL) { 10318 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10319 break; 10320 } 10321 } 10322 10323 // free structs on error 10324 if (status != ERROR_CODE_SUCCESS){ 10325 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10326 } 10327 10328 return status; 10329 } 10330 10331 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10332 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10333 if (status != ERROR_CODE_SUCCESS){ 10334 return status; 10335 } 10336 10337 le_audio_big_t * big = storage; 10338 big->big_handle = big_params->big_handle; 10339 big->params = big_params; 10340 big->state = LE_AUDIO_BIG_STATE_CREATE; 10341 big->num_bis = big_params->num_bis; 10342 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10343 10344 hci_run(); 10345 10346 return ERROR_CODE_SUCCESS; 10347 } 10348 10349 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10350 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10351 if (status != ERROR_CODE_SUCCESS){ 10352 return status; 10353 } 10354 10355 le_audio_big_sync_t * big_sync = storage; 10356 big_sync->big_handle = big_sync_params->big_handle; 10357 big_sync->params = big_sync_params; 10358 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10359 big_sync->num_bis = big_sync_params->num_bis; 10360 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10361 10362 hci_run(); 10363 10364 return ERROR_CODE_SUCCESS; 10365 } 10366 10367 uint8_t gap_big_terminate(uint8_t big_handle){ 10368 le_audio_big_t * big = hci_big_for_handle(big_handle); 10369 if (big == NULL){ 10370 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10371 } 10372 switch (big->state){ 10373 case LE_AUDIO_BIG_STATE_CREATE: 10374 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10375 hci_emit_big_terminated(big); 10376 break; 10377 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10378 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10379 break; 10380 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10381 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10382 case LE_AUDIO_BIG_STATE_ACTIVE: 10383 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10384 hci_run(); 10385 break; 10386 default: 10387 return ERROR_CODE_COMMAND_DISALLOWED; 10388 } 10389 return ERROR_CODE_SUCCESS; 10390 } 10391 10392 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10393 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10394 if (big_sync == NULL){ 10395 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10396 } 10397 switch (big_sync->state){ 10398 case LE_AUDIO_BIG_STATE_CREATE: 10399 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10400 hci_emit_big_sync_stopped(big_handle); 10401 break; 10402 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10403 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10404 break; 10405 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10406 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10407 case LE_AUDIO_BIG_STATE_ACTIVE: 10408 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10409 hci_run(); 10410 break; 10411 default: 10412 return ERROR_CODE_COMMAND_DISALLOWED; 10413 } 10414 return ERROR_CODE_SUCCESS; 10415 } 10416 10417 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10418 le_audio_big_t * big = hci_big_for_handle(big_handle); 10419 if (big == NULL){ 10420 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10421 } 10422 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10423 return ERROR_CODE_COMMAND_DISALLOWED; 10424 } 10425 big->can_send_now_requested = true; 10426 hci_iso_notify_can_send_now(); 10427 return ERROR_CODE_SUCCESS; 10428 } 10429 10430 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10431 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10432 if (iso_stream == NULL){ 10433 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10434 } 10435 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10436 return ERROR_CODE_COMMAND_DISALLOWED; 10437 } 10438 iso_stream->can_send_now_requested = true; 10439 hci_iso_notify_can_send_now(); 10440 return ERROR_CODE_SUCCESS; 10441 } 10442 10443 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10444 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10445 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10446 } 10447 if (cig_params->num_cis == 0){ 10448 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10449 } 10450 if (cig_params->num_cis > MAX_NR_CIS){ 10451 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10452 } 10453 10454 // reserve ISO Streams 10455 uint8_t i; 10456 uint8_t status = ERROR_CODE_SUCCESS; 10457 for (i=0;i<cig_params->num_cis;i++){ 10458 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10459 if (iso_stream == NULL) { 10460 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10461 break; 10462 } 10463 } 10464 10465 // free structs on error 10466 if (status != ERROR_CODE_SUCCESS){ 10467 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10468 return status; 10469 } 10470 10471 le_audio_cig_t * cig = storage; 10472 cig->cig_id = cig_params->cig_id; 10473 cig->num_cis = cig_params->num_cis; 10474 cig->params = cig_params; 10475 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10476 for (i=0;i<cig->num_cis;i++){ 10477 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10478 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10479 cig->cis_setup_active[i] = false; 10480 cig->cis_established[i] = false; 10481 } 10482 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10483 10484 hci_run(); 10485 10486 return ERROR_CODE_SUCCESS; 10487 } 10488 10489 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10490 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10491 if (cig == NULL){ 10492 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10493 } 10494 10495 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10496 return ERROR_CODE_COMMAND_DISALLOWED; 10497 } 10498 10499 // store ACL Connection Handles 10500 uint8_t i; 10501 for (i=0;i<cig->num_cis;i++){ 10502 // check that all con handles exist and store 10503 hci_con_handle_t cis_handle = cis_con_handles[i]; 10504 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10505 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10506 } 10507 uint8_t j; 10508 bool found = false; 10509 for (j=0;j<cig->num_cis;j++){ 10510 if (cig->cis_con_handles[j] == cis_handle){ 10511 cig->acl_con_handles[j] = acl_con_handles[j]; 10512 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10513 btstack_assert(iso_stream != NULL); 10514 iso_stream->acl_handle = acl_con_handles[j]; 10515 found = true; 10516 break; 10517 } 10518 } 10519 if (!found){ 10520 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10521 } 10522 } 10523 10524 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10525 hci_run(); 10526 10527 return ERROR_CODE_SUCCESS; 10528 } 10529 10530 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10531 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10532 if (iso_stream == NULL){ 10533 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10534 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10535 } 10536 10537 // set next state and continue 10538 iso_stream->state = state; 10539 hci_run(); 10540 return ERROR_CODE_SUCCESS; 10541 } 10542 10543 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10544 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10545 } 10546 10547 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10548 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10549 } 10550 10551 10552 #endif 10553 #endif /* ENABLE_BLE */ 10554 10555 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10556 void hci_setup_test_connections_fuzz(void){ 10557 hci_connection_t * conn; 10558 10559 // default address: 66:55:44:33:00:01 10560 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10561 10562 // setup Controller info 10563 hci_stack->num_cmd_packets = 255; 10564 hci_stack->acl_packets_total_num = 255; 10565 10566 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10567 addr[5] = 0x01; 10568 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10569 conn->con_handle = addr[5]; 10570 conn->state = RECEIVED_CONNECTION_REQUEST; 10571 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10572 10573 // setup incoming Classic SCO connection with con handle 0x0002 10574 addr[5] = 0x02; 10575 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10576 conn->con_handle = addr[5]; 10577 conn->state = RECEIVED_CONNECTION_REQUEST; 10578 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10579 10580 // setup ready Classic ACL connection with con handle 0x0003 10581 addr[5] = 0x03; 10582 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10583 conn->con_handle = addr[5]; 10584 conn->state = OPEN; 10585 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10586 10587 // setup ready Classic SCO connection with con handle 0x0004 10588 addr[5] = 0x04; 10589 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10590 conn->con_handle = addr[5]; 10591 conn->state = OPEN; 10592 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10593 10594 // setup ready LE ACL connection with con handle 0x005 and public address 10595 addr[5] = 0x05; 10596 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10597 conn->con_handle = addr[5]; 10598 conn->state = OPEN; 10599 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10600 conn->sm_connection.sm_connection_encrypted = 1; 10601 } 10602 10603 void hci_free_connections_fuzz(void){ 10604 btstack_linked_list_iterator_t it; 10605 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10606 while (btstack_linked_list_iterator_has_next(&it)){ 10607 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10608 btstack_linked_list_iterator_remove(&it); 10609 btstack_memory_hci_connection_free(con); 10610 } 10611 } 10612 void hci_simulate_working_fuzz(void){ 10613 hci_stack->le_scanning_param_update = false; 10614 hci_init_done(); 10615 hci_stack->num_cmd_packets = 255; 10616 } 10617 #endif 10618