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[2]){ 3269 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3270 memcpy(&gap_event[3], &hci_event[3], 11); 3271 memset(&gap_event[14], 0, 12); 3272 memcpy(&gap_event[26], &hci_event[14], 7); 3273 memset(&gap_event[33], 0xff, 3); 3274 break; 3275 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3276 memcpy(&gap_event[3], &hci_event[3], 30); 3277 memset(&gap_event[33], 0xff, 3); 3278 break; 3279 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3280 memcpy(&gap_event[3], &hci_event[3], 33); 3281 break; 3282 default: 3283 btstack_unreachable(); 3284 break; 3285 } 3286 } 3287 3288 static void 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 conn = gap_get_outgoing_le_connection(); 3343 // if successful, use (potentially) identity address 3344 // note: we don't update hci le subevent connection complete 3345 if (conn != NULL){ 3346 gap_event[7] = conn->address_type; 3347 reverse_bd_addr(conn->address, &gap_event[8]); 3348 } 3349 3350 // we're done with it 3351 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3352 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3353 #endif 3354 } else { 3355 #ifdef ENABLE_LE_PERIPHERAL 3356 // if we're slave, it was an incoming connection, advertisements have stopped 3357 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3358 #endif 3359 } 3360 3361 // LE connections are auto-accepted, so just create a connection if there isn't one already 3362 if (!conn){ 3363 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3364 } 3365 3366 // no memory, sorry. 3367 if (!conn){ 3368 return; 3369 } 3370 3371 conn->state = OPEN; 3372 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3373 conn->le_connection_interval = conn_interval; 3374 3375 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3376 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3377 3378 #ifdef ENABLE_LE_PERIPHERAL 3379 if (role == HCI_ROLE_SLAVE){ 3380 hci_update_advertisements_enabled_for_current_roles(); 3381 } 3382 #endif 3383 3384 // init unenhanced att bearer mtu 3385 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3386 conn->att_connection.mtu_exchanged = false; 3387 3388 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3389 3390 // restart timer 3391 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3392 // btstack_run_loop_add_timer(&conn->timeout); 3393 3394 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3395 3396 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3397 hci_emit_event(gap_event, sizeof(gap_event), 1); 3398 3399 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3400 hci_emit_nr_connections_changed(); 3401 } 3402 #endif 3403 3404 #ifdef ENABLE_CLASSIC 3405 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){ 3406 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3407 // LEVEL_4 is tested by l2cap 3408 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3409 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3410 if (level >= LEVEL_3){ 3411 // MITM not possible without keyboard or display 3412 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3413 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3414 3415 // MITM possible if one side has keyboard and the other has keyboard or display 3416 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3417 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3418 3419 // MITM not possible if one side has only display and other side has no keyboard 3420 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3421 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3422 } 3423 // LEVEL 2 requires SSP, which is a given 3424 return true; 3425 } 3426 3427 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3428 // get requested security level 3429 gap_security_level_t requested_security_level = conn->requested_security_level; 3430 if (hci_stack->gap_secure_connections_only_mode){ 3431 requested_security_level = LEVEL_4; 3432 } 3433 3434 // assess security: LEVEL 4 requires SC 3435 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3436 if ((requested_security_level == LEVEL_4) && 3437 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3438 !hci_remote_sc_enabled(conn)){ 3439 log_info("Level 4 required, but SC not supported -> abort"); 3440 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3441 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3442 return; 3443 } 3444 3445 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3446 // - GAP/MOD/NBON/BV-02-C 3447 // - GAP/DM/NBON/BV-01-C 3448 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3449 switch (conn->io_cap_response_auth_req){ 3450 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3451 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3452 if (hci_stack->bondable == false){ 3453 log_info("Dedicated vs. non-bondable -> abort"); 3454 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3455 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3456 return; 3457 } 3458 default: 3459 break; 3460 } 3461 } 3462 3463 // assess security based on io capabilities 3464 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3465 // responder: fully validate io caps of both sides as well as OOB data 3466 bool security_possible = false; 3467 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3468 3469 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3470 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3471 // so we merge the OOB data availability 3472 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3473 if (conn->classic_oob_c_192 != NULL){ 3474 have_oob_data |= 1; 3475 } 3476 if (conn->classic_oob_c_256 != NULL){ 3477 have_oob_data |= 2; 3478 } 3479 // for up to Level 3, either P-192 as well as P-256 will do 3480 // 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 3481 // if remote does not SC, we should not receive P-256 data either 3482 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3483 security_possible = true; 3484 } 3485 // for Level 4, P-256 is needed 3486 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3487 security_possible = true; 3488 } 3489 #endif 3490 3491 if (security_possible == false){ 3492 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3493 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3494 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3495 return; 3496 } 3497 } else { 3498 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3499 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3500 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3501 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3502 log_info("Level 3+ required, but no input/output -> abort"); 3503 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3504 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3505 return; 3506 } 3507 #endif 3508 #endif 3509 } 3510 3511 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3512 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3513 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3514 } else { 3515 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3516 } 3517 #endif 3518 } 3519 3520 #endif 3521 3522 static void event_handler(uint8_t *packet, uint16_t size){ 3523 3524 uint16_t event_length = packet[1]; 3525 3526 // assert packet is complete 3527 if (size != (event_length + 2u)){ 3528 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3529 return; 3530 } 3531 3532 hci_con_handle_t handle; 3533 hci_connection_t * conn; 3534 int i; 3535 3536 #ifdef ENABLE_CLASSIC 3537 hci_link_type_t link_type; 3538 bd_addr_t addr; 3539 bd_addr_type_t addr_type; 3540 #endif 3541 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3542 hci_iso_stream_t * iso_stream; 3543 le_audio_big_t * big; 3544 le_audio_big_sync_t * big_sync; 3545 #endif 3546 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3547 btstack_linked_list_iterator_t it; 3548 #endif 3549 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3550 uint8_t advertising_handle; 3551 #endif 3552 3553 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3554 3555 switch (hci_event_packet_get_type(packet)) { 3556 3557 case HCI_EVENT_COMMAND_COMPLETE: 3558 handle_command_complete_event(packet, size); 3559 break; 3560 3561 case HCI_EVENT_COMMAND_STATUS: 3562 handle_command_status_event(packet, size); 3563 break; 3564 3565 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3566 if (size < 3) return; 3567 uint16_t num_handles = packet[2]; 3568 if (size != (3u + num_handles * 4u)) return; 3569 #ifdef ENABLE_CLASSIC 3570 bool notify_sco = false; 3571 #endif 3572 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3573 bool notify_iso = false; 3574 #endif 3575 uint16_t offset = 3; 3576 for (i=0; i<num_handles;i++){ 3577 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3578 offset += 2u; 3579 uint16_t num_packets = little_endian_read_16(packet, offset); 3580 offset += 2u; 3581 3582 conn = hci_connection_for_handle(handle); 3583 if (conn != NULL) { 3584 3585 if (conn->num_packets_sent >= num_packets) { 3586 conn->num_packets_sent -= num_packets; 3587 } else { 3588 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3589 conn->num_packets_sent = 0; 3590 } 3591 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3592 #ifdef ENABLE_CLASSIC 3593 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3594 notify_sco = true; 3595 } 3596 #endif 3597 } 3598 3599 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3600 hci_controller_dump_packets(); 3601 #endif 3602 3603 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3604 if (conn == NULL){ 3605 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3606 if (iso_stream != NULL){ 3607 if (iso_stream->num_packets_sent >= num_packets) { 3608 iso_stream->num_packets_sent -= num_packets; 3609 } else { 3610 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3611 iso_stream->num_packets_sent = 0; 3612 } 3613 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3614 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3615 if (big != NULL){ 3616 big->num_completed_timestamp_current_valid = true; 3617 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3618 } 3619 } 3620 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3621 num_packets, handle, iso_stream->num_packets_sent); 3622 notify_iso = true; 3623 } 3624 } 3625 #endif 3626 } 3627 3628 #ifdef ENABLE_CLASSIC 3629 if (notify_sco){ 3630 hci_notify_if_sco_can_send_now(); 3631 } 3632 #endif 3633 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3634 if (notify_iso){ 3635 hci_iso_notify_can_send_now(); 3636 } 3637 #endif 3638 break; 3639 } 3640 3641 #ifdef ENABLE_CLASSIC 3642 case HCI_EVENT_FLUSH_OCCURRED: 3643 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3644 handle = hci_event_flush_occurred_get_handle(packet); 3645 conn = hci_connection_for_handle(handle); 3646 if (conn) { 3647 log_info("Flush occurred, disconnect 0x%04x", handle); 3648 conn->state = SEND_DISCONNECT; 3649 } 3650 break; 3651 3652 case HCI_EVENT_INQUIRY_COMPLETE: 3653 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3654 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3655 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3656 hci_emit_event(event, sizeof(event), 1); 3657 } 3658 break; 3659 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3660 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3661 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3662 } 3663 break; 3664 case HCI_EVENT_CONNECTION_REQUEST: 3665 reverse_bd_addr(&packet[2], addr); 3666 link_type = (hci_link_type_t) packet[11]; 3667 3668 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3669 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3670 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3671 bd_addr_copy(hci_stack->decline_addr, addr); 3672 break; 3673 } 3674 3675 if (hci_stack->gap_classic_accept_callback != NULL){ 3676 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3677 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3678 bd_addr_copy(hci_stack->decline_addr, addr); 3679 break; 3680 } 3681 } 3682 3683 // TODO: eval COD 8-10 3684 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3685 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3686 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3687 if (!conn) { 3688 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3689 } 3690 if (!conn) { 3691 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3692 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3693 bd_addr_copy(hci_stack->decline_addr, addr); 3694 hci_run(); 3695 // avoid event to higher layer 3696 return; 3697 } 3698 conn->state = RECEIVED_CONNECTION_REQUEST; 3699 // store info about eSCO 3700 if (link_type == HCI_LINK_TYPE_ESCO){ 3701 conn->remote_supported_features[0] |= 1; 3702 } 3703 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3704 if (addr_type == BD_ADDR_TYPE_SCO){ 3705 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3706 // ACL exists unless fuzzing 3707 if (acl_conn != NULL) { 3708 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3709 } 3710 } 3711 hci_run(); 3712 break; 3713 3714 case HCI_EVENT_CONNECTION_COMPLETE: 3715 // Connection management 3716 reverse_bd_addr(&packet[5], addr); 3717 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3718 addr_type = BD_ADDR_TYPE_ACL; 3719 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3720 if (conn) { 3721 switch (conn->state){ 3722 // expected states 3723 case ACCEPTED_CONNECTION_REQUEST: 3724 case SENT_CREATE_CONNECTION: 3725 break; 3726 // unexpected state -> ignore 3727 default: 3728 // don't forward event to app 3729 return; 3730 } 3731 if (!packet[2]){ 3732 conn->state = OPEN; 3733 conn->con_handle = little_endian_read_16(packet, 3); 3734 3735 // trigger write supervision timeout if we're master 3736 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3737 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3738 } 3739 3740 // trigger write automatic flush timeout 3741 if (hci_stack->automatic_flush_timeout != 0){ 3742 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3743 } 3744 3745 // restart timer 3746 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3747 btstack_run_loop_add_timer(&conn->timeout); 3748 3749 // trigger remote features for dedicated bonding 3750 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3751 hci_trigger_remote_features_for_connection(conn); 3752 } 3753 3754 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3755 3756 hci_emit_nr_connections_changed(); 3757 } else { 3758 // connection failed 3759 hci_handle_connection_failed(conn, packet[2]); 3760 } 3761 } 3762 break; 3763 3764 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3765 reverse_bd_addr(&packet[5], addr); 3766 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3767 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3768 3769 // SCO exists unless fuzzer 3770 if (conn == NULL) break; 3771 3772 if (packet[2] != ERROR_CODE_SUCCESS){ 3773 // connection failed, remove entry 3774 hci_handle_connection_failed(conn, packet[2]); 3775 break; 3776 } 3777 3778 conn->state = OPEN; 3779 conn->con_handle = little_endian_read_16(packet, 3); 3780 3781 // update sco payload length for eSCO connections 3782 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3783 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3784 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3785 } 3786 3787 #ifdef ENABLE_SCO_OVER_HCI 3788 // update SCO 3789 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3790 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3791 } 3792 // trigger can send now 3793 if (hci_have_usb_transport()){ 3794 hci_stack->sco_can_send_now = true; 3795 } 3796 3797 // setup implict sco flow control 3798 conn->sco_tx_ready = 0; 3799 conn->sco_tx_active = 0; 3800 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3801 3802 #endif 3803 #ifdef HAVE_SCO_TRANSPORT 3804 // configure sco transport 3805 if (hci_stack->sco_transport != NULL){ 3806 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3807 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3808 } 3809 #endif 3810 break; 3811 3812 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3813 handle = little_endian_read_16(packet, 3); 3814 conn = hci_connection_for_handle(handle); 3815 if (!conn) break; 3816 if (!packet[2]){ 3817 const uint8_t * features = &packet[5]; 3818 hci_handle_remote_features_page_0(conn, features); 3819 3820 // read extended features if possible 3821 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3822 && ((conn->remote_supported_features[0] & 2) != 0)) { 3823 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3824 break; 3825 } 3826 } 3827 hci_handle_remote_features_received(conn); 3828 break; 3829 3830 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3831 handle = little_endian_read_16(packet, 3); 3832 conn = hci_connection_for_handle(handle); 3833 if (!conn) break; 3834 // status = ok, page = 1 3835 if (!packet[2]) { 3836 uint8_t page_number = packet[5]; 3837 uint8_t maximum_page_number = packet[6]; 3838 const uint8_t * features = &packet[7]; 3839 bool done = false; 3840 switch (page_number){ 3841 case 1: 3842 hci_handle_remote_features_page_1(conn, features); 3843 if (maximum_page_number >= 2){ 3844 // get Secure Connections (Controller) from Page 2 if available 3845 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3846 } else { 3847 // otherwise, assume SC (Controller) == SC (Host) 3848 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3849 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3850 } 3851 done = true; 3852 } 3853 break; 3854 case 2: 3855 hci_handle_remote_features_page_2(conn, features); 3856 done = true; 3857 break; 3858 default: 3859 break; 3860 } 3861 if (!done) break; 3862 } 3863 hci_handle_remote_features_received(conn); 3864 break; 3865 3866 case HCI_EVENT_LINK_KEY_REQUEST: 3867 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3868 hci_event_link_key_request_get_bd_addr(packet, addr); 3869 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3870 if (!conn) break; 3871 3872 // lookup link key in db if not cached 3873 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3874 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3875 } 3876 3877 // response sent by hci_run() 3878 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3879 #endif 3880 break; 3881 3882 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3883 hci_event_link_key_request_get_bd_addr(packet, addr); 3884 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3885 if (!conn) break; 3886 3887 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3888 3889 // CVE-2020-26555: ignore NULL link key 3890 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3891 if (btstack_is_null(&packet[8], 16)) break; 3892 3893 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3894 // Change Connection Encryption keeps link key type 3895 if (link_key_type != CHANGED_COMBINATION_KEY){ 3896 conn->link_key_type = link_key_type; 3897 } 3898 3899 // cache link key. link keys stored in little-endian format for legacy reasons 3900 memcpy(&conn->link_key, &packet[8], 16); 3901 3902 // only store link key: 3903 // - if bondable enabled 3904 if (hci_stack->bondable == false) break; 3905 // - if security level sufficient 3906 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3907 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3908 break; 3909 } 3910 3911 case HCI_EVENT_PIN_CODE_REQUEST: 3912 hci_event_pin_code_request_get_bd_addr(packet, addr); 3913 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3914 if (!conn) break; 3915 3916 hci_pairing_started(conn, false); 3917 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3918 if (!hci_stack->bondable ){ 3919 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3920 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3921 hci_run(); 3922 return; 3923 } 3924 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3925 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3926 log_info("Level 4 required, but SC not supported -> abort"); 3927 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3928 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3929 hci_run(); 3930 return; 3931 } 3932 break; 3933 3934 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3935 hci_event_io_capability_response_get_bd_addr(packet, addr); 3936 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3937 if (!conn) break; 3938 3939 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3940 hci_pairing_started(conn, true); 3941 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3942 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3943 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3944 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3945 #endif 3946 break; 3947 3948 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3949 hci_event_io_capability_response_get_bd_addr(packet, addr); 3950 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3951 if (!conn) break; 3952 3953 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3954 hci_connection_timestamp(conn); 3955 hci_pairing_started(conn, true); 3956 break; 3957 3958 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3959 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3960 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3961 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3962 if (!conn) break; 3963 3964 hci_connection_timestamp(conn); 3965 3966 hci_pairing_started(conn, true); 3967 3968 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3969 break; 3970 #endif 3971 3972 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3973 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3974 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3975 if (!conn) break; 3976 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3977 if (hci_stack->ssp_auto_accept){ 3978 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3979 }; 3980 } else { 3981 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3982 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3983 // don't forward event to app 3984 hci_run(); 3985 return; 3986 } 3987 break; 3988 3989 case HCI_EVENT_USER_PASSKEY_REQUEST: 3990 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3991 if (hci_stack->ssp_auto_accept){ 3992 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3993 }; 3994 break; 3995 3996 case HCI_EVENT_MODE_CHANGE: 3997 handle = hci_event_mode_change_get_handle(packet); 3998 conn = hci_connection_for_handle(handle); 3999 if (!conn) break; 4000 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4001 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4002 break; 4003 #endif 4004 4005 case HCI_EVENT_ENCRYPTION_CHANGE: 4006 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4007 handle = hci_event_encryption_change_get_connection_handle(packet); 4008 conn = hci_connection_for_handle(handle); 4009 if (!conn) break; 4010 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4011 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4012 if (encryption_enabled){ 4013 if (hci_is_le_connection(conn)){ 4014 // For LE, we accept connection as encrypted 4015 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4016 } 4017 #ifdef ENABLE_CLASSIC 4018 else { 4019 4020 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4021 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4022 bool connected_uses_aes_ccm = encryption_enabled == 2; 4023 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4024 #ifdef ENABLE_TESTING_SUPPORT 4025 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4026 // - GAP/SEC/SEM/BI-31-C 4027 // - GAP/SEC/SEM/BI-32-C 4028 // - GAP/SEC/SEM/BI-33-C 4029 4030 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4031 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4032 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4033 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4034 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4035 } 4036 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4037 conn->link_key_type, new_link_key_type); 4038 conn->link_key_type = new_link_key_type; 4039 #else 4040 log_info("SC during pairing, but only E0 now -> abort"); 4041 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4042 break; 4043 #endif 4044 } 4045 4046 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4047 if (connected_uses_aes_ccm){ 4048 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4049 } 4050 4051 #ifdef ENABLE_TESTING_SUPPORT 4052 // work around for issue with PTS dongle 4053 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4054 #endif 4055 // validate encryption key size 4056 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4057 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4058 // already got encryption key size 4059 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4060 } else { 4061 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4062 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4063 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4064 } else { 4065 // if not, pretend everything is perfect 4066 hci_handle_read_encryption_key_size_complete(conn, 16); 4067 } 4068 } 4069 } 4070 #endif 4071 } else { 4072 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4073 } 4074 } else { 4075 #ifdef ENABLE_CLASSIC 4076 if (!hci_is_le_connection(conn)){ 4077 uint8_t status = hci_event_encryption_change_get_status(packet); 4078 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4079 conn->bonding_flags &= ~BONDING_DEDICATED; 4080 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4081 conn->bonding_status = status; 4082 } 4083 // trigger security update -> level 0 4084 hci_handle_mutual_authentication_completed(conn); 4085 } 4086 #endif 4087 } 4088 4089 break; 4090 4091 #ifdef ENABLE_CLASSIC 4092 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4093 handle = hci_event_authentication_complete_get_connection_handle(packet); 4094 conn = hci_connection_for_handle(handle); 4095 if (!conn) break; 4096 4097 // clear authentication active flag 4098 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4099 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4100 4101 // authenticated only if auth status == 0 4102 if (hci_event_authentication_complete_get_status(packet) == 0){ 4103 // authenticated 4104 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4105 4106 // If not already encrypted, start encryption 4107 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4108 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4109 break; 4110 } 4111 } 4112 4113 // emit updated security level (will be 0 if not authenticated) 4114 hci_handle_mutual_authentication_completed(conn); 4115 break; 4116 4117 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4118 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4119 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4120 if (!conn) break; 4121 4122 // treat successfully paired connection as authenticated 4123 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4124 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4125 } 4126 4127 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4128 break; 4129 #endif 4130 4131 // HCI_EVENT_DISCONNECTION_COMPLETE 4132 // has been split, to first notify stack before shutting connection down 4133 // see end of function, too. 4134 case HCI_EVENT_DISCONNECTION_COMPLETE: 4135 if (packet[2]) break; // status != 0 4136 handle = little_endian_read_16(packet, 3); 4137 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4138 if (hci_stack->acl_fragmentation_total_size > 0u) { 4139 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4140 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4141 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4142 hci_stack->acl_fragmentation_total_size = 0; 4143 hci_stack->acl_fragmentation_pos = 0; 4144 if (release_buffer){ 4145 hci_release_packet_buffer(); 4146 } 4147 } 4148 } 4149 4150 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4151 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4152 if (hci_stack->iso_fragmentation_total_size > 0u) { 4153 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4154 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4155 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4156 hci_stack->iso_fragmentation_total_size = 0; 4157 hci_stack->iso_fragmentation_pos = 0; 4158 if (release_buffer){ 4159 hci_release_packet_buffer(); 4160 } 4161 } 4162 } 4163 4164 // finalize iso stream for CIS handle 4165 iso_stream = hci_iso_stream_for_con_handle(handle); 4166 if (iso_stream != NULL){ 4167 hci_iso_stream_finalize(iso_stream); 4168 break; 4169 } 4170 4171 // finalize iso stream(s) for ACL handle 4172 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4173 while (btstack_linked_list_iterator_has_next(&it)){ 4174 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4175 if (iso_stream->acl_handle == handle ) { 4176 hci_iso_stream_finalize(iso_stream); 4177 } 4178 } 4179 #endif 4180 4181 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4182 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4183 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4184 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4185 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4186 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4187 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4188 hci_stack->num_cmd_packets = 1; 4189 } 4190 #endif 4191 4192 conn = hci_connection_for_handle(handle); 4193 if (!conn) break; 4194 #ifdef ENABLE_CLASSIC 4195 // pairing failed if it was ongoing 4196 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4197 #endif 4198 4199 // emit dedicatd bonding event 4200 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4201 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4202 } 4203 4204 // mark connection for shutdown, stop timers, reset state 4205 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4206 hci_connection_stop_timer(conn); 4207 hci_connection_init(conn); 4208 4209 #ifdef ENABLE_BLE 4210 #ifdef ENABLE_LE_PERIPHERAL 4211 // re-enable advertisements for le connections if active 4212 if (hci_is_le_connection(conn)){ 4213 hci_update_advertisements_enabled_for_current_roles(); 4214 } 4215 #endif 4216 #endif 4217 break; 4218 4219 case HCI_EVENT_HARDWARE_ERROR: 4220 log_error("Hardware Error: 0x%02x", packet[2]); 4221 if (hci_stack->hardware_error_callback){ 4222 (*hci_stack->hardware_error_callback)(packet[2]); 4223 } else { 4224 // if no special requests, just reboot stack 4225 hci_power_control_off(); 4226 hci_power_control_on(); 4227 } 4228 break; 4229 4230 #ifdef ENABLE_CLASSIC 4231 case HCI_EVENT_ROLE_CHANGE: 4232 if (packet[2]) break; // status != 0 4233 reverse_bd_addr(&packet[3], addr); 4234 addr_type = BD_ADDR_TYPE_ACL; 4235 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4236 if (!conn) break; 4237 conn->role = (hci_role_t) packet[9]; 4238 break; 4239 #endif 4240 4241 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4242 // release packet buffer only for asynchronous transport and if there are not further fragments 4243 if (hci_transport_synchronous()) { 4244 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4245 return; // instead of break: to avoid re-entering hci_run() 4246 } 4247 hci_stack->acl_fragmentation_tx_active = 0; 4248 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4249 hci_stack->iso_fragmentation_tx_active = 0; 4250 if (hci_stack->iso_fragmentation_total_size) break; 4251 #endif 4252 if (hci_stack->acl_fragmentation_total_size) break; 4253 hci_release_packet_buffer(); 4254 4255 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4256 hci_iso_notify_can_send_now(); 4257 #endif 4258 // L2CAP receives this event via the hci_emit_event below 4259 4260 #ifdef ENABLE_CLASSIC 4261 // For SCO, we do the can_send_now_check here 4262 hci_notify_if_sco_can_send_now(); 4263 #endif 4264 break; 4265 4266 #ifdef ENABLE_CLASSIC 4267 case HCI_EVENT_SCO_CAN_SEND_NOW: 4268 // For SCO, we do the can_send_now_check here 4269 hci_stack->sco_can_send_now = true; 4270 hci_notify_if_sco_can_send_now(); 4271 return; 4272 4273 // explode inquriy results for easier consumption 4274 case HCI_EVENT_INQUIRY_RESULT: 4275 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4276 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4277 gap_inquiry_explode(packet, size); 4278 break; 4279 #endif 4280 4281 #ifdef ENABLE_BLE 4282 case HCI_EVENT_LE_META: 4283 switch (packet[2]){ 4284 #ifdef ENABLE_LE_CENTRAL 4285 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4286 if (!hci_stack->le_scanning_enabled) break; 4287 le_handle_advertisement_report(packet, size); 4288 break; 4289 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4290 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4291 if (!hci_stack->le_scanning_enabled) break; 4292 le_handle_extended_advertisement_report(packet, size); 4293 break; 4294 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4295 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4296 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4297 break; 4298 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4299 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4300 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4301 while (btstack_linked_list_iterator_has_next(&it)) { 4302 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4303 if (advertising_set->advertising_handle == advertising_handle){ 4304 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4305 } 4306 } 4307 break; 4308 #endif 4309 #endif 4310 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4311 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4312 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4313 hci_handle_le_connection_complete_event(packet); 4314 break; 4315 4316 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4317 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4318 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4319 conn = hci_connection_for_handle(handle); 4320 if (!conn) break; 4321 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4322 break; 4323 4324 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4325 // connection 4326 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4327 conn = hci_connection_for_handle(handle); 4328 if (conn) { 4329 // read arguments 4330 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4331 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4332 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4333 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4334 4335 // validate against current connection parameter range 4336 le_connection_parameter_range_t existing_range; 4337 gap_get_connection_parameter_range(&existing_range); 4338 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4339 if (update_parameter){ 4340 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4341 conn->le_conn_interval_min = le_conn_interval_min; 4342 conn->le_conn_interval_max = le_conn_interval_max; 4343 conn->le_conn_latency = le_conn_latency; 4344 conn->le_supervision_timeout = le_supervision_timeout; 4345 } else { 4346 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4347 } 4348 } 4349 break; 4350 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4351 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4352 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4353 conn = hci_connection_for_handle(handle); 4354 if (conn) { 4355 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4356 } 4357 break; 4358 #endif 4359 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4360 case HCI_SUBEVENT_LE_CIS_REQUEST: 4361 // incoming CIS request, allocate iso stream object and cache metadata 4362 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4363 hci_subevent_le_cis_request_get_cig_id(packet), 4364 hci_subevent_le_cis_request_get_cis_id(packet)); 4365 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4366 if (iso_stream != NULL){ 4367 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4368 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4369 } 4370 break; 4371 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4372 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4373 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4374 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4375 iso_stream = hci_iso_stream_for_con_handle(handle); 4376 btstack_assert(iso_stream != NULL); 4377 // track connection info 4378 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4379 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4380 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4381 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4382 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4383 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4384 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4385 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4386 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4387 // CIS Accept by Peripheral 4388 if (status == ERROR_CODE_SUCCESS){ 4389 if (iso_stream->max_sdu_p_to_c > 0){ 4390 // we're peripheral and we will send data 4391 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4392 } else { 4393 // we're peripheral and we will only receive data 4394 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4395 } 4396 } else { 4397 hci_cis_handle_created(iso_stream, status); 4398 } 4399 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4400 } else { 4401 // CIG Setup by Central 4402 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4403 btstack_assert(cig != NULL); 4404 // update iso stream state 4405 if (status == ERROR_CODE_SUCCESS){ 4406 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4407 } else { 4408 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4409 } 4410 // update cig state 4411 uint8_t i; 4412 for (i=0;i<cig->num_cis;i++){ 4413 if (cig->cis_con_handles[i] == handle){ 4414 cig->cis_setup_active[i] = false; 4415 if (status == ERROR_CODE_SUCCESS){ 4416 cig->cis_established[i] = true; 4417 } else { 4418 hci_cis_handle_created(iso_stream, status); 4419 } 4420 } 4421 } 4422 4423 // trigger iso path setup if complete 4424 bool cis_setup_active = false; 4425 for (i=0;i<cig->num_cis;i++){ 4426 cis_setup_active |= cig->cis_setup_active[i]; 4427 } 4428 if (cis_setup_active == false){ 4429 cig->state_vars.next_cis = 0; 4430 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4431 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4432 } 4433 } 4434 } 4435 break; 4436 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4437 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4438 big = hci_big_for_handle(packet[4]); 4439 if (big != NULL){ 4440 uint8_t status = packet[3]; 4441 if (status == ERROR_CODE_SUCCESS){ 4442 // store bis_con_handles and trigger iso path setup 4443 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4444 uint8_t i; 4445 for (i=0;i<num_bis;i++){ 4446 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4447 big->bis_con_handles[i] = bis_handle; 4448 // assign bis handle 4449 btstack_linked_list_iterator_t it; 4450 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4451 while (btstack_linked_list_iterator_has_next(&it)){ 4452 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4453 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4454 (iso_stream->group_id == big->big_handle)){ 4455 iso_stream->cis_handle = bis_handle; 4456 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4457 break; 4458 } 4459 } 4460 } 4461 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4462 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4463 big->state_vars.next_bis = 0; 4464 } 4465 } else { 4466 // create BIG failed or has been stopped by us 4467 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4468 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4469 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4470 hci_emit_big_created(big, status); 4471 } else { 4472 hci_emit_big_terminated(big); 4473 } 4474 } 4475 } 4476 break; 4477 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4478 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4479 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4480 if (big != NULL){ 4481 // finalize associated ISO streams 4482 btstack_linked_list_iterator_t it; 4483 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4484 while (btstack_linked_list_iterator_has_next(&it)){ 4485 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4486 if (iso_stream->group_id == big->big_handle){ 4487 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4488 btstack_linked_list_iterator_remove(&it); 4489 btstack_memory_hci_iso_stream_free(iso_stream); 4490 } 4491 } 4492 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4493 switch (big->state){ 4494 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4495 hci_emit_big_created(big, big->state_vars.status); 4496 break; 4497 default: 4498 hci_emit_big_terminated(big); 4499 break; 4500 } 4501 } 4502 break; 4503 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4504 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4505 big_sync = hci_big_sync_for_handle(packet[4]); 4506 if (big_sync != NULL){ 4507 uint8_t status = packet[3]; 4508 uint8_t big_handle = packet[4]; 4509 if (status == ERROR_CODE_SUCCESS){ 4510 // store bis_con_handles and trigger iso path setup 4511 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4512 uint8_t i; 4513 for (i=0;i<num_bis;i++){ 4514 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4515 big_sync->bis_con_handles[i] = bis_handle; 4516 // setup iso_stream_t 4517 btstack_linked_list_iterator_t it; 4518 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4519 while (btstack_linked_list_iterator_has_next(&it)){ 4520 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4521 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4522 (iso_stream->group_id == big_sync->big_handle)){ 4523 iso_stream->cis_handle = bis_handle; 4524 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4525 break; 4526 } 4527 } 4528 } 4529 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4530 // trigger iso path setup 4531 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4532 big_sync->state_vars.next_bis = 0; 4533 } 4534 } else { 4535 // create BIG Sync failed or has been stopped by us 4536 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4537 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4538 hci_emit_big_sync_created(big_sync, status); 4539 } else { 4540 hci_emit_big_sync_stopped(big_handle); 4541 } 4542 } 4543 } 4544 break; 4545 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4546 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4547 big_sync = hci_big_sync_for_handle(packet[4]); 4548 if (big_sync != NULL){ 4549 uint8_t big_handle = packet[4]; 4550 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4551 hci_emit_big_sync_stopped(big_handle); 4552 } 4553 break; 4554 #endif 4555 default: 4556 break; 4557 } 4558 break; 4559 #endif 4560 case HCI_EVENT_VENDOR_SPECIFIC: 4561 // Vendor specific commands often create vendor specific event instead of num completed packets 4562 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4563 switch (hci_stack->manufacturer){ 4564 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4565 hci_stack->num_cmd_packets = 1; 4566 break; 4567 default: 4568 break; 4569 } 4570 break; 4571 default: 4572 break; 4573 } 4574 4575 handle_event_for_current_stack_state(packet, size); 4576 4577 // notify upper stack 4578 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4579 4580 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4581 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4582 handle = little_endian_read_16(packet, 3); 4583 hci_connection_t * aConn = hci_connection_for_handle(handle); 4584 // discard connection if app did not trigger a reconnect in the event handler 4585 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4586 hci_shutdown_connection(aConn); 4587 } 4588 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4589 hci_controller_dump_packets(); 4590 #endif 4591 } 4592 4593 // execute main loop 4594 hci_run(); 4595 } 4596 4597 #ifdef ENABLE_CLASSIC 4598 4599 static void sco_handler(uint8_t * packet, uint16_t size){ 4600 // lookup connection struct 4601 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4602 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4603 if (!conn) return; 4604 4605 #ifdef ENABLE_SCO_OVER_HCI 4606 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4607 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4608 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4609 packet[2] = 0x3c; 4610 memmove(&packet[3], &packet[23], 63); 4611 size = 63; 4612 } 4613 } 4614 4615 if (hci_have_usb_transport()){ 4616 // Nothing to do 4617 } else { 4618 // 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); 4619 if (hci_stack->synchronous_flow_control_enabled == 0){ 4620 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4621 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4622 if (conn->sco_tx_active == 0){ 4623 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4624 conn->sco_tx_active = 1; 4625 conn->sco_tx_ready = max_sco_packets; 4626 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4627 hci_notify_if_sco_can_send_now(); 4628 } 4629 } else { 4630 if (conn->sco_tx_ready < max_sco_packets){ 4631 conn->sco_tx_ready++; 4632 } 4633 hci_notify_if_sco_can_send_now(); 4634 } 4635 } 4636 } 4637 #endif 4638 4639 // deliver to app 4640 if (hci_stack->sco_packet_handler) { 4641 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4642 } 4643 4644 #ifdef HAVE_SCO_TRANSPORT 4645 // We can send one packet for each received packet 4646 conn->sco_tx_ready++; 4647 hci_notify_if_sco_can_send_now(); 4648 #endif 4649 4650 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4651 conn->num_packets_completed++; 4652 hci_stack->host_completed_packets = 1; 4653 hci_run(); 4654 #endif 4655 } 4656 #endif 4657 4658 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4659 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4660 // propagate ISO packets received as ACL 4661 hci_iso_stream_t * iso_stream = NULL; 4662 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4663 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4664 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4665 if (iso_stream != NULL){ 4666 packet_type = HCI_ISO_DATA_PACKET; 4667 } 4668 } 4669 #endif 4670 4671 hci_dump_packet(packet_type, 1, packet, size); 4672 switch (packet_type) { 4673 case HCI_EVENT_PACKET: 4674 event_handler(packet, size); 4675 break; 4676 case HCI_ACL_DATA_PACKET: 4677 acl_handler(packet, size); 4678 break; 4679 #ifdef ENABLE_CLASSIC 4680 case HCI_SCO_DATA_PACKET: 4681 sco_handler(packet, size); 4682 break; 4683 #endif 4684 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4685 case HCI_ISO_DATA_PACKET: 4686 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4687 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4688 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4689 } 4690 hci_iso_packet_handler(iso_stream, packet, size); 4691 break; 4692 #endif 4693 default: 4694 break; 4695 } 4696 } 4697 4698 /** 4699 * @brief Add event packet handler. 4700 */ 4701 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4702 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4703 } 4704 4705 /** 4706 * @brief Remove event packet handler. 4707 */ 4708 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4709 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4710 } 4711 4712 /** Register HCI packet handlers */ 4713 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4714 hci_stack->acl_packet_handler = handler; 4715 } 4716 4717 #ifdef ENABLE_CLASSIC 4718 /** 4719 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4720 */ 4721 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4722 hci_stack->sco_packet_handler = handler; 4723 } 4724 #endif 4725 4726 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4727 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4728 hci_stack->iso_packet_handler = handler; 4729 } 4730 #endif 4731 4732 static void hci_state_reset(void){ 4733 // no connections yet 4734 hci_stack->connections = NULL; 4735 4736 // keep discoverable/connectable as this has been requested by the client(s) 4737 // hci_stack->discoverable = 0; 4738 // hci_stack->connectable = 0; 4739 // hci_stack->bondable = 1; 4740 // hci_stack->own_addr_type = 0; 4741 4742 // buffer is free 4743 hci_stack->hci_packet_buffer_reserved = false; 4744 4745 // no pending cmds 4746 hci_stack->decline_reason = 0; 4747 4748 hci_stack->secure_connections_active = false; 4749 4750 #ifdef ENABLE_CLASSIC 4751 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4752 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4753 4754 hci_stack->gap_tasks_classic = 4755 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4756 GAP_TASK_SET_CLASS_OF_DEVICE | 4757 GAP_TASK_SET_LOCAL_NAME | 4758 GAP_TASK_SET_EIR_DATA | 4759 GAP_TASK_WRITE_SCAN_ENABLE | 4760 GAP_TASK_WRITE_PAGE_TIMEOUT; 4761 #endif 4762 4763 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4764 hci_stack->classic_read_local_oob_data = false; 4765 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4766 #endif 4767 4768 // LE 4769 #ifdef ENABLE_BLE 4770 memset(hci_stack->le_random_address, 0, 6); 4771 hci_stack->le_random_address_set = 0; 4772 #endif 4773 #ifdef ENABLE_LE_CENTRAL 4774 hci_stack->le_scanning_active = false; 4775 hci_stack->le_scanning_param_update = true; 4776 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4777 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4778 hci_stack->le_whitelist_capacity = 0; 4779 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4780 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4781 #endif 4782 #endif 4783 #ifdef ENABLE_LE_PERIPHERAL 4784 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4785 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4786 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4787 } 4788 if (hci_stack->le_advertisements_data != NULL){ 4789 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4790 } 4791 #endif 4792 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4793 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4794 #endif 4795 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4796 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4797 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4798 #endif 4799 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4800 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4801 #endif 4802 } 4803 4804 #ifdef ENABLE_CLASSIC 4805 /** 4806 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4807 */ 4808 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4809 // store and open remote device db 4810 hci_stack->link_key_db = link_key_db; 4811 if (hci_stack->link_key_db) { 4812 hci_stack->link_key_db->open(); 4813 } 4814 } 4815 #endif 4816 4817 void hci_init(const hci_transport_t *transport, const void *config){ 4818 4819 #ifdef HAVE_MALLOC 4820 if (!hci_stack) { 4821 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4822 } 4823 #else 4824 hci_stack = &hci_stack_static; 4825 #endif 4826 memset(hci_stack, 0, sizeof(hci_stack_t)); 4827 4828 // reference to use transport layer implementation 4829 hci_stack->hci_transport = transport; 4830 4831 // reference to used config 4832 hci_stack->config = config; 4833 4834 // setup pointer for outgoing packet buffer 4835 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4836 4837 // max acl payload size defined in config.h 4838 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4839 4840 // register packet handlers with transport 4841 transport->register_packet_handler(&packet_handler); 4842 4843 hci_stack->state = HCI_STATE_OFF; 4844 4845 // class of device 4846 hci_stack->class_of_device = 0x007a020c; // Smartphone 4847 4848 // bondable by default 4849 hci_stack->bondable = 1; 4850 4851 #ifdef ENABLE_CLASSIC 4852 // classic name 4853 hci_stack->local_name = default_classic_name; 4854 4855 // Master slave policy 4856 hci_stack->master_slave_policy = 1; 4857 4858 // Allow Role Switch 4859 hci_stack->allow_role_switch = 1; 4860 4861 // Default / minimum security level = 2 4862 hci_stack->gap_security_level = LEVEL_2; 4863 4864 // Default Security Mode 4 4865 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4866 4867 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4868 hci_stack->gap_required_encyrption_key_size = 7; 4869 4870 // Link Supervision Timeout 4871 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4872 4873 // All ACL packet types are enabledh 4874 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4875 #endif 4876 4877 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4878 hci_stack->ssp_enable = 1; 4879 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4880 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4881 hci_stack->ssp_auto_accept = 1; 4882 4883 // Secure Connections: enable (requires support from Controller) 4884 hci_stack->secure_connections_enable = true; 4885 4886 // voice setting - signed 16 bit pcm data with CVSD over the air 4887 hci_stack->sco_voice_setting = 0x60; 4888 4889 #ifdef ENABLE_BLE 4890 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4891 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4892 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4893 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4894 hci_stack->le_connection_latency = 4; // 4 4895 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4896 hci_stack->le_minimum_ce_length = 0; // 0 ms 4897 hci_stack->le_maximum_ce_length = 0; // 0 ms 4898 #endif 4899 4900 #ifdef ENABLE_LE_CENTRAL 4901 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4902 4903 // default LE Scanning 4904 hci_stack->le_scan_type = 0x01; // active 4905 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4906 hci_stack->le_scan_window = 0x30; // 30 ms 4907 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4908 #endif 4909 4910 #ifdef ENABLE_LE_PERIPHERAL 4911 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4912 4913 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4914 hci_stack->le_advertisements_interval_min = 0x0800; 4915 hci_stack->le_advertisements_interval_max = 0x0800; 4916 hci_stack->le_advertisements_type = 0; 4917 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4918 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4919 hci_stack->le_advertisements_channel_map = 0x07; 4920 hci_stack->le_advertisements_filter_policy = 0; 4921 #endif 4922 4923 // connection parameter range used to answer connection parameter update requests in l2cap 4924 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4925 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4926 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4927 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4928 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4929 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4930 4931 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4932 hci_stack->iso_packets_to_queue = 1; 4933 #endif 4934 4935 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4936 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4937 #endif 4938 4939 hci_state_reset(); 4940 } 4941 4942 void hci_deinit(void){ 4943 btstack_run_loop_remove_timer(&hci_stack->timeout); 4944 #ifdef HAVE_MALLOC 4945 if (hci_stack) { 4946 free(hci_stack); 4947 } 4948 #endif 4949 hci_stack = NULL; 4950 4951 #ifdef ENABLE_CLASSIC 4952 disable_l2cap_timeouts = 0; 4953 #endif 4954 } 4955 4956 /** 4957 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4958 */ 4959 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4960 hci_stack->chipset = chipset_driver; 4961 4962 // reset chipset driver - init is also called on power_up 4963 if (hci_stack->chipset && hci_stack->chipset->init){ 4964 hci_stack->chipset->init(hci_stack->config); 4965 } 4966 } 4967 4968 void hci_enable_custom_pre_init(void){ 4969 hci_stack->chipset_pre_init = true; 4970 } 4971 4972 /** 4973 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4974 */ 4975 void hci_set_control(const btstack_control_t *hardware_control){ 4976 // references to used control implementation 4977 hci_stack->control = hardware_control; 4978 // init with transport config 4979 hardware_control->init(hci_stack->config); 4980 } 4981 4982 static void hci_discard_connections(void){ 4983 btstack_linked_list_iterator_t it; 4984 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4985 while (btstack_linked_list_iterator_has_next(&it)){ 4986 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4987 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4988 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4989 hci_shutdown_connection(connection); 4990 } 4991 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4992 while (hci_stack->iso_streams != NULL){ 4993 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4994 } 4995 #endif 4996 } 4997 4998 void hci_close(void){ 4999 5000 #ifdef ENABLE_CLASSIC 5001 // close remote device db 5002 if (hci_stack->link_key_db) { 5003 hci_stack->link_key_db->close(); 5004 } 5005 #endif 5006 5007 hci_discard_connections(); 5008 5009 hci_power_control(HCI_POWER_OFF); 5010 5011 #ifdef HAVE_MALLOC 5012 free(hci_stack); 5013 #endif 5014 hci_stack = NULL; 5015 } 5016 5017 #ifdef HAVE_SCO_TRANSPORT 5018 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5019 hci_stack->sco_transport = sco_transport; 5020 sco_transport->register_packet_handler(&packet_handler); 5021 } 5022 #endif 5023 5024 #ifdef ENABLE_CLASSIC 5025 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5026 // validate ranage and set 5027 if (encryption_key_size < 7) return; 5028 if (encryption_key_size > 16) return; 5029 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5030 } 5031 5032 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5033 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5034 hci_stack->gap_security_mode = security_mode; 5035 return ERROR_CODE_SUCCESS; 5036 } else { 5037 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5038 } 5039 } 5040 5041 gap_security_mode_t gap_get_security_mode(void){ 5042 return hci_stack->gap_security_mode; 5043 } 5044 5045 void gap_set_security_level(gap_security_level_t security_level){ 5046 hci_stack->gap_security_level = security_level; 5047 } 5048 5049 gap_security_level_t gap_get_security_level(void){ 5050 if (hci_stack->gap_secure_connections_only_mode){ 5051 return LEVEL_4; 5052 } 5053 return hci_stack->gap_security_level; 5054 } 5055 5056 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5057 hci_stack->gap_minimal_service_security_level = security_level; 5058 } 5059 5060 void gap_set_secure_connections_only_mode(bool enable){ 5061 hci_stack->gap_secure_connections_only_mode = enable; 5062 } 5063 5064 bool gap_get_secure_connections_only_mode(void){ 5065 return hci_stack->gap_secure_connections_only_mode; 5066 } 5067 #endif 5068 5069 #ifdef ENABLE_CLASSIC 5070 void gap_set_class_of_device(uint32_t class_of_device){ 5071 hci_stack->class_of_device = class_of_device; 5072 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5073 hci_run(); 5074 } 5075 5076 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5077 hci_stack->default_link_policy_settings = default_link_policy_settings; 5078 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5079 hci_run(); 5080 } 5081 5082 void gap_set_allow_role_switch(bool allow_role_switch){ 5083 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5084 } 5085 5086 uint8_t hci_get_allow_role_switch(void){ 5087 return hci_stack->allow_role_switch; 5088 } 5089 5090 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5091 hci_stack->link_supervision_timeout = link_supervision_timeout; 5092 } 5093 5094 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5095 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5096 } 5097 5098 uint16_t hci_automatic_flush_timeout(void){ 5099 return hci_stack->automatic_flush_timeout; 5100 } 5101 5102 void hci_disable_l2cap_timeout_check(void){ 5103 disable_l2cap_timeouts = 1; 5104 } 5105 #endif 5106 5107 #ifndef HAVE_HOST_CONTROLLER_API 5108 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5109 void hci_set_bd_addr(bd_addr_t addr){ 5110 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5111 hci_stack->custom_bd_addr_set = 1; 5112 } 5113 #endif 5114 5115 // State-Module-Driver overview 5116 // state module low-level 5117 // HCI_STATE_OFF off close 5118 // HCI_STATE_INITIALIZING, on open 5119 // HCI_STATE_WORKING, on open 5120 // HCI_STATE_HALTING, on open 5121 // HCI_STATE_SLEEPING, off/sleep close 5122 // HCI_STATE_FALLING_ASLEEP on open 5123 5124 static int hci_power_control_on(void){ 5125 5126 // power on 5127 int err = 0; 5128 if (hci_stack->control && hci_stack->control->on){ 5129 err = (*hci_stack->control->on)(); 5130 } 5131 if (err){ 5132 log_error( "POWER_ON failed"); 5133 hci_emit_hci_open_failed(); 5134 return err; 5135 } 5136 5137 // int chipset driver 5138 if (hci_stack->chipset && hci_stack->chipset->init){ 5139 hci_stack->chipset->init(hci_stack->config); 5140 } 5141 5142 // init transport 5143 if (hci_stack->hci_transport->init){ 5144 hci_stack->hci_transport->init(hci_stack->config); 5145 } 5146 5147 // open transport 5148 err = hci_stack->hci_transport->open(); 5149 if (err){ 5150 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5151 if (hci_stack->control && hci_stack->control->off){ 5152 (*hci_stack->control->off)(); 5153 } 5154 hci_emit_hci_open_failed(); 5155 return err; 5156 } 5157 return 0; 5158 } 5159 5160 static void hci_power_control_off(void){ 5161 5162 log_info("hci_power_control_off"); 5163 5164 // close low-level device 5165 hci_stack->hci_transport->close(); 5166 5167 log_info("hci_power_control_off - hci_transport closed"); 5168 5169 // power off 5170 if (hci_stack->control && hci_stack->control->off){ 5171 (*hci_stack->control->off)(); 5172 } 5173 5174 log_info("hci_power_control_off - control closed"); 5175 5176 hci_stack->state = HCI_STATE_OFF; 5177 } 5178 5179 static void hci_power_control_sleep(void){ 5180 5181 log_info("hci_power_control_sleep"); 5182 5183 #if 0 5184 // don't close serial port during sleep 5185 5186 // close low-level device 5187 hci_stack->hci_transport->close(hci_stack->config); 5188 #endif 5189 5190 // sleep mode 5191 if (hci_stack->control && hci_stack->control->sleep){ 5192 (*hci_stack->control->sleep)(); 5193 } 5194 5195 hci_stack->state = HCI_STATE_SLEEPING; 5196 } 5197 5198 static int hci_power_control_wake(void){ 5199 5200 log_info("hci_power_control_wake"); 5201 5202 // wake on 5203 if (hci_stack->control && hci_stack->control->wake){ 5204 (*hci_stack->control->wake)(); 5205 } 5206 5207 #if 0 5208 // open low-level device 5209 int err = hci_stack->hci_transport->open(hci_stack->config); 5210 if (err){ 5211 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5212 if (hci_stack->control && hci_stack->control->off){ 5213 (*hci_stack->control->off)(); 5214 } 5215 hci_emit_hci_open_failed(); 5216 return err; 5217 } 5218 #endif 5219 5220 return 0; 5221 } 5222 5223 static void hci_power_enter_initializing_state(void){ 5224 // set up state machine 5225 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5226 hci_stack->hci_packet_buffer_reserved = false; 5227 hci_stack->state = HCI_STATE_INITIALIZING; 5228 5229 #ifndef HAVE_HOST_CONTROLLER_API 5230 if (hci_stack->chipset_pre_init) { 5231 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5232 } else 5233 #endif 5234 { 5235 hci_stack->substate = HCI_INIT_SEND_RESET; 5236 } 5237 } 5238 5239 static void hci_power_enter_halting_state(void){ 5240 #ifdef ENABLE_BLE 5241 // drop entries scheduled for removal, mark others for re-adding 5242 btstack_linked_list_iterator_t it; 5243 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5244 while (btstack_linked_list_iterator_has_next(&it)){ 5245 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5246 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5247 btstack_linked_list_iterator_remove(&it); 5248 btstack_memory_whitelist_entry_free(entry); 5249 } else { 5250 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5251 } 5252 } 5253 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5254 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5255 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5256 while (btstack_linked_list_iterator_has_next(&it)){ 5257 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5258 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5259 btstack_linked_list_iterator_remove(&it); 5260 btstack_memory_periodic_advertiser_list_entry_free(entry); 5261 } else { 5262 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5263 continue; 5264 } 5265 } 5266 #endif 5267 #endif 5268 // see hci_run 5269 hci_stack->state = HCI_STATE_HALTING; 5270 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5271 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5272 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5273 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5274 btstack_run_loop_add_timer(&hci_stack->timeout); 5275 } 5276 5277 // returns error 5278 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5279 int err; 5280 switch (power_mode){ 5281 case HCI_POWER_ON: 5282 err = hci_power_control_on(); 5283 if (err != 0) { 5284 log_error("hci_power_control_on() error %d", err); 5285 return err; 5286 } 5287 hci_power_enter_initializing_state(); 5288 break; 5289 case HCI_POWER_OFF: 5290 // do nothing 5291 break; 5292 case HCI_POWER_SLEEP: 5293 // do nothing (with SLEEP == OFF) 5294 break; 5295 default: 5296 btstack_assert(false); 5297 break; 5298 } 5299 return ERROR_CODE_SUCCESS; 5300 } 5301 5302 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5303 switch (power_mode){ 5304 case HCI_POWER_ON: 5305 // do nothing 5306 break; 5307 case HCI_POWER_OFF: 5308 // no connections yet, just turn it off 5309 hci_power_control_off(); 5310 break; 5311 case HCI_POWER_SLEEP: 5312 // no connections yet, just turn it off 5313 hci_power_control_sleep(); 5314 break; 5315 default: 5316 btstack_assert(false); 5317 break; 5318 } 5319 return ERROR_CODE_SUCCESS; 5320 } 5321 5322 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5323 switch (power_mode){ 5324 case HCI_POWER_ON: 5325 // do nothing 5326 break; 5327 case HCI_POWER_OFF: 5328 hci_power_enter_halting_state(); 5329 break; 5330 case HCI_POWER_SLEEP: 5331 // see hci_run 5332 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5333 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5334 break; 5335 default: 5336 btstack_assert(false); 5337 break; 5338 } 5339 return ERROR_CODE_SUCCESS; 5340 } 5341 5342 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5343 switch (power_mode){ 5344 case HCI_POWER_ON: 5345 hci_power_enter_initializing_state(); 5346 break; 5347 case HCI_POWER_OFF: 5348 // do nothing 5349 break; 5350 case HCI_POWER_SLEEP: 5351 // see hci_run 5352 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5353 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5354 break; 5355 default: 5356 btstack_assert(false); 5357 break; 5358 } 5359 return ERROR_CODE_SUCCESS; 5360 } 5361 5362 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5363 switch (power_mode){ 5364 case HCI_POWER_ON: 5365 hci_power_enter_initializing_state(); 5366 break; 5367 case HCI_POWER_OFF: 5368 hci_power_enter_halting_state(); 5369 break; 5370 case HCI_POWER_SLEEP: 5371 // do nothing 5372 break; 5373 default: 5374 btstack_assert(false); 5375 break; 5376 } 5377 return ERROR_CODE_SUCCESS; 5378 } 5379 5380 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5381 int err; 5382 switch (power_mode){ 5383 case HCI_POWER_ON: 5384 err = hci_power_control_wake(); 5385 if (err) return err; 5386 hci_power_enter_initializing_state(); 5387 break; 5388 case HCI_POWER_OFF: 5389 hci_power_enter_halting_state(); 5390 break; 5391 case HCI_POWER_SLEEP: 5392 // do nothing 5393 break; 5394 default: 5395 btstack_assert(false); 5396 break; 5397 } 5398 return ERROR_CODE_SUCCESS; 5399 } 5400 5401 int hci_power_control(HCI_POWER_MODE power_mode){ 5402 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5403 btstack_run_loop_remove_timer(&hci_stack->timeout); 5404 int err = 0; 5405 switch (hci_stack->state){ 5406 case HCI_STATE_OFF: 5407 err = hci_power_control_state_off(power_mode); 5408 break; 5409 case HCI_STATE_INITIALIZING: 5410 err = hci_power_control_state_initializing(power_mode); 5411 break; 5412 case HCI_STATE_WORKING: 5413 err = hci_power_control_state_working(power_mode); 5414 break; 5415 case HCI_STATE_HALTING: 5416 err = hci_power_control_state_halting(power_mode); 5417 break; 5418 case HCI_STATE_FALLING_ASLEEP: 5419 err = hci_power_control_state_falling_asleep(power_mode); 5420 break; 5421 case HCI_STATE_SLEEPING: 5422 err = hci_power_control_state_sleeping(power_mode); 5423 break; 5424 default: 5425 btstack_assert(false); 5426 break; 5427 } 5428 if (err != 0){ 5429 return err; 5430 } 5431 5432 // create internal event 5433 hci_emit_state(); 5434 5435 // trigger next/first action 5436 hci_run(); 5437 5438 return 0; 5439 } 5440 5441 5442 static void hci_halting_run(void) { 5443 5444 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5445 5446 hci_connection_t *connection; 5447 #ifdef ENABLE_BLE 5448 #ifdef ENABLE_LE_PERIPHERAL 5449 bool stop_advertismenets; 5450 #endif 5451 #endif 5452 5453 switch (hci_stack->substate) { 5454 case HCI_HALTING_CLASSIC_STOP: 5455 #ifdef ENABLE_CLASSIC 5456 if (!hci_can_send_command_packet_now()) return; 5457 5458 if (hci_stack->connectable || hci_stack->discoverable){ 5459 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5460 hci_send_cmd(&hci_write_scan_enable, 0); 5461 return; 5462 } 5463 #endif 5464 /* fall through */ 5465 5466 case HCI_HALTING_LE_ADV_STOP: 5467 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5468 5469 #ifdef ENABLE_BLE 5470 #ifdef ENABLE_LE_PERIPHERAL 5471 if (!hci_can_send_command_packet_now()) return; 5472 5473 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5474 5475 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5476 if (hci_extended_advertising_supported()){ 5477 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5478 btstack_linked_list_iterator_t it; 5479 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5480 // stop all periodic advertisements and check if an extended set is active 5481 while (btstack_linked_list_iterator_has_next(&it)){ 5482 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5483 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5484 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5485 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5486 return; 5487 } 5488 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5489 stop_advertismenets = true; 5490 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5491 } 5492 } 5493 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5494 if (stop_advertismenets){ 5495 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5496 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5497 return; 5498 } 5499 } else 5500 #else /* ENABLE_LE_PERIPHERAL */ 5501 { 5502 if (stop_advertismenets) { 5503 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5504 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5505 return; 5506 } 5507 } 5508 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5509 #endif /* ENABLE_LE_PERIPHERAL */ 5510 #endif /* ENABLE_BLE */ 5511 5512 /* fall through */ 5513 5514 case HCI_HALTING_LE_SCAN_STOP: 5515 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5516 if (!hci_can_send_command_packet_now()) return; 5517 5518 #ifdef ENABLE_BLE 5519 #ifdef ENABLE_LE_CENTRAL 5520 if (hci_stack->le_scanning_active){ 5521 hci_le_scan_stop(); 5522 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5523 return; 5524 } 5525 #endif 5526 #endif 5527 5528 /* fall through */ 5529 5530 case HCI_HALTING_DISCONNECT_ALL: 5531 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5532 if (!hci_can_send_command_packet_now()) return; 5533 5534 // close all open connections 5535 connection = (hci_connection_t *) hci_stack->connections; 5536 if (connection) { 5537 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5538 5539 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5540 5541 // check state 5542 switch(connection->state) { 5543 case SENT_DISCONNECT: 5544 case RECEIVED_DISCONNECTION_COMPLETE: 5545 // wait until connection is gone 5546 return; 5547 default: 5548 break; 5549 } 5550 5551 // finally, send the disconnect command 5552 connection->state = SENT_DISCONNECT; 5553 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5554 return; 5555 } 5556 5557 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5558 // stop BIGs and BIG Syncs 5559 if (hci_stack->le_audio_bigs != NULL){ 5560 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5561 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5562 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5563 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5564 return; 5565 } 5566 if (hci_stack->le_audio_big_syncs != NULL){ 5567 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5568 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5569 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5570 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5571 return; 5572 } 5573 #endif 5574 5575 btstack_run_loop_remove_timer(&hci_stack->timeout); 5576 5577 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5578 log_info("HCI_STATE_HALTING: wait 50 ms"); 5579 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5580 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5581 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5582 btstack_run_loop_add_timer(&hci_stack->timeout); 5583 break; 5584 5585 case HCI_HALTING_W4_CLOSE_TIMER: 5586 // keep waiting 5587 break; 5588 5589 case HCI_HALTING_CLOSE: 5590 // close left over connections (that had not been properly closed before) 5591 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5592 hci_discard_connections(); 5593 5594 log_info("HCI_STATE_HALTING, calling off"); 5595 5596 // switch mode 5597 hci_power_control_off(); 5598 5599 log_info("HCI_STATE_HALTING, emitting state"); 5600 hci_emit_state(); 5601 log_info("HCI_STATE_HALTING, done"); 5602 break; 5603 5604 default: 5605 break; 5606 } 5607 }; 5608 5609 static void hci_falling_asleep_run(void){ 5610 hci_connection_t * connection; 5611 switch(hci_stack->substate) { 5612 case HCI_FALLING_ASLEEP_DISCONNECT: 5613 log_info("HCI_STATE_FALLING_ASLEEP"); 5614 // close all open connections 5615 connection = (hci_connection_t *) hci_stack->connections; 5616 if (connection){ 5617 5618 // send disconnect 5619 if (!hci_can_send_command_packet_now()) return; 5620 5621 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5622 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5623 5624 // send disconnected event right away - causes higher layer connections to get closed, too. 5625 hci_shutdown_connection(connection); 5626 return; 5627 } 5628 5629 if (hci_classic_supported()){ 5630 // disable page and inquiry scan 5631 if (!hci_can_send_command_packet_now()) return; 5632 5633 log_info("HCI_STATE_HALTING, disabling inq scans"); 5634 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5635 5636 // continue in next sub state 5637 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5638 break; 5639 } 5640 5641 /* fall through */ 5642 5643 case HCI_FALLING_ASLEEP_COMPLETE: 5644 log_info("HCI_STATE_HALTING, calling sleep"); 5645 // switch mode 5646 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5647 hci_emit_state(); 5648 break; 5649 5650 default: 5651 break; 5652 } 5653 } 5654 5655 #ifdef ENABLE_CLASSIC 5656 5657 static void hci_update_scan_enable(void){ 5658 // 2 = page scan, 1 = inq scan 5659 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5660 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5661 hci_run(); 5662 } 5663 5664 void gap_discoverable_control(uint8_t enable){ 5665 if (enable) enable = 1; // normalize argument 5666 5667 if (hci_stack->discoverable == enable){ 5668 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5669 return; 5670 } 5671 5672 hci_stack->discoverable = enable; 5673 hci_update_scan_enable(); 5674 } 5675 5676 void gap_connectable_control(uint8_t enable){ 5677 if (enable) enable = 1; // normalize argument 5678 5679 // don't emit event 5680 if (hci_stack->connectable == enable) return; 5681 5682 hci_stack->connectable = enable; 5683 hci_update_scan_enable(); 5684 } 5685 #endif 5686 5687 void gap_local_bd_addr(bd_addr_t address_buffer){ 5688 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5689 } 5690 5691 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5692 static void hci_host_num_completed_packets(void){ 5693 5694 // create packet manually as arrays are not supported and num_commands should not get reduced 5695 hci_reserve_packet_buffer(); 5696 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5697 5698 uint16_t size = 0; 5699 uint16_t num_handles = 0; 5700 packet[size++] = 0x35; 5701 packet[size++] = 0x0c; 5702 size++; // skip param len 5703 size++; // skip num handles 5704 5705 // add { handle, packets } entries 5706 btstack_linked_item_t * it; 5707 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5708 hci_connection_t * connection = (hci_connection_t *) it; 5709 if (connection->num_packets_completed){ 5710 little_endian_store_16(packet, size, connection->con_handle); 5711 size += 2; 5712 little_endian_store_16(packet, size, connection->num_packets_completed); 5713 size += 2; 5714 // 5715 num_handles++; 5716 connection->num_packets_completed = 0; 5717 } 5718 } 5719 5720 packet[2] = size - 3; 5721 packet[3] = num_handles; 5722 5723 hci_stack->host_completed_packets = 0; 5724 5725 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5726 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5727 5728 // release packet buffer for synchronous transport implementations 5729 if (hci_transport_synchronous()){ 5730 hci_release_packet_buffer(); 5731 hci_emit_transport_packet_sent(); 5732 } 5733 } 5734 #endif 5735 5736 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5737 UNUSED(ds); 5738 hci_stack->substate = HCI_HALTING_CLOSE; 5739 hci_halting_run(); 5740 } 5741 5742 static bool hci_run_acl_fragments(void){ 5743 if (hci_stack->acl_fragmentation_total_size > 0u) { 5744 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5745 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5746 if (connection) { 5747 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5748 hci_send_acl_packet_fragments(connection); 5749 return true; 5750 } 5751 } else { 5752 // connection gone -> discard further fragments 5753 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5754 hci_stack->acl_fragmentation_total_size = 0; 5755 hci_stack->acl_fragmentation_pos = 0; 5756 } 5757 } 5758 return false; 5759 } 5760 5761 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5762 static bool hci_run_iso_fragments(void){ 5763 if (hci_stack->iso_fragmentation_total_size > 0u) { 5764 // TODO: flow control 5765 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5766 hci_send_iso_packet_fragments(); 5767 return true; 5768 } 5769 } 5770 return false; 5771 } 5772 #endif 5773 5774 #ifdef ENABLE_CLASSIC 5775 5776 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5777 static bool hci_classic_operation_active(void) { 5778 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5779 return true; 5780 } 5781 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5782 return true; 5783 } 5784 btstack_linked_item_t * it; 5785 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5786 hci_connection_t *connection = (hci_connection_t *) it; 5787 switch (connection->state) { 5788 case SENT_CREATE_CONNECTION: 5789 case SENT_CANCEL_CONNECTION: 5790 case SENT_DISCONNECT: 5791 return true; 5792 default: 5793 break; 5794 } 5795 } 5796 return false; 5797 } 5798 #endif 5799 5800 static bool hci_run_general_gap_classic(void){ 5801 5802 // assert stack is working and classic is active 5803 if (hci_classic_supported() == false) return false; 5804 if (hci_stack->state != HCI_STATE_WORKING) return false; 5805 5806 // decline incoming connections 5807 if (hci_stack->decline_reason){ 5808 uint8_t reason = hci_stack->decline_reason; 5809 hci_stack->decline_reason = 0; 5810 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5811 return true; 5812 } 5813 5814 if (hci_stack->gap_tasks_classic != 0){ 5815 hci_run_gap_tasks_classic(); 5816 return true; 5817 } 5818 5819 // start/stop inquiry 5820 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5821 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5822 if (hci_classic_operation_active() == false) 5823 #endif 5824 { 5825 uint8_t duration = hci_stack->inquiry_state; 5826 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5827 if (hci_stack->inquiry_max_period_length != 0){ 5828 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); 5829 } else { 5830 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5831 } 5832 return true; 5833 } 5834 } 5835 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5836 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5837 hci_send_cmd(&hci_inquiry_cancel); 5838 return true; 5839 } 5840 5841 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5842 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5843 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5844 return true; 5845 } 5846 5847 // remote name request 5848 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5849 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5850 if (hci_classic_operation_active() == false) 5851 #endif 5852 { 5853 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5854 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5855 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5856 return true; 5857 } 5858 } 5859 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5860 // Local OOB data 5861 if (hci_stack->classic_read_local_oob_data){ 5862 hci_stack->classic_read_local_oob_data = false; 5863 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5864 hci_send_cmd(&hci_read_local_extended_oob_data); 5865 } else { 5866 hci_send_cmd(&hci_read_local_oob_data); 5867 } 5868 } 5869 #endif 5870 // pairing 5871 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5872 uint8_t state = hci_stack->gap_pairing_state; 5873 uint8_t pin_code[PIN_CODE_LEN]; 5874 switch (state){ 5875 case GAP_PAIRING_STATE_SEND_PIN: 5876 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5877 memset(pin_code, 0, 16); 5878 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5879 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5880 break; 5881 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5882 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5883 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5884 break; 5885 case GAP_PAIRING_STATE_SEND_PASSKEY: 5886 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5887 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5888 break; 5889 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5890 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5891 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5892 break; 5893 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5894 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5895 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5896 break; 5897 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5898 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5899 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5900 break; 5901 default: 5902 break; 5903 } 5904 return true; 5905 } 5906 return false; 5907 } 5908 #endif 5909 5910 #ifdef ENABLE_BLE 5911 5912 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5913 static uint8_t hci_le_num_phys(uint8_t phys){ 5914 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5915 btstack_assert(phys); 5916 return num_bits_set[phys]; 5917 } 5918 #endif 5919 5920 #ifdef ENABLE_LE_CENTRAL 5921 static void hci_le_scan_stop(void){ 5922 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5923 if (hci_extended_advertising_supported()) { 5924 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5925 } else 5926 #endif 5927 { 5928 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5929 } 5930 } 5931 5932 static void 5933 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5934 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5935 if (hci_extended_advertising_supported()) { 5936 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5937 uint16_t le_connection_scan_interval[3]; 5938 uint16_t le_connection_scan_window[3]; 5939 uint16_t le_connection_interval_min[3]; 5940 uint16_t le_connection_interval_max[3]; 5941 uint16_t le_connection_latency[3]; 5942 uint16_t le_supervision_timeout[3]; 5943 uint16_t le_minimum_ce_length[3]; 5944 uint16_t le_maximum_ce_length[3]; 5945 5946 uint8_t i; 5947 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5948 for (i=0;i<num_phys;i++){ 5949 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5950 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5951 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5952 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5953 le_connection_latency[i] = hci_stack->le_connection_latency; 5954 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5955 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5956 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5957 } 5958 hci_send_cmd(&hci_le_extended_create_connection, 5959 initiator_filter_policy, 5960 hci_stack->le_connection_own_addr_type, // our addr type: 5961 address_type, // peer address type 5962 address, // peer bd addr 5963 hci_stack->le_connection_phys, // initiating PHY 5964 le_connection_scan_interval, // conn scan interval 5965 le_connection_scan_window, // conn scan windows 5966 le_connection_interval_min, // conn interval min 5967 le_connection_interval_max, // conn interval max 5968 le_connection_latency, // conn latency 5969 le_supervision_timeout, // conn latency 5970 le_minimum_ce_length, // min ce length 5971 le_maximum_ce_length // max ce length 5972 ); 5973 } else 5974 #endif 5975 { 5976 hci_send_cmd(&hci_le_create_connection, 5977 hci_stack->le_connection_scan_interval, // conn scan interval 5978 hci_stack->le_connection_scan_window, // conn scan windows 5979 initiator_filter_policy, // don't use whitelist 5980 address_type, // peer address type 5981 address, // peer bd addr 5982 hci_stack->le_connection_own_addr_type, // our addr type: 5983 hci_stack->le_connection_interval_min, // conn interval min 5984 hci_stack->le_connection_interval_max, // conn interval max 5985 hci_stack->le_connection_latency, // conn latency 5986 hci_stack->le_supervision_timeout, // conn latency 5987 hci_stack->le_minimum_ce_length, // min ce length 5988 hci_stack->le_maximum_ce_length // max ce length 5989 ); 5990 } 5991 } 5992 #endif 5993 5994 #ifdef ENABLE_LE_PERIPHERAL 5995 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5996 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5997 uint8_t operation = 0; 5998 if (pos == 0){ 5999 // first fragment or complete data 6000 operation |= 1; 6001 } 6002 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6003 // last fragment or complete data 6004 operation |= 2; 6005 } 6006 return operation; 6007 } 6008 #endif 6009 #endif 6010 6011 static bool hci_run_general_gap_le(void){ 6012 6013 btstack_linked_list_iterator_t lit; 6014 6015 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6016 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6017 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6018 hci_stack->le_resolvable_private_address_update_s = 0; 6019 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6020 return true; 6021 } 6022 #endif 6023 6024 // Phase 1: collect what to stop 6025 6026 #ifdef ENABLE_LE_CENTRAL 6027 bool scanning_stop = false; 6028 bool connecting_stop = false; 6029 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6030 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6031 bool periodic_sync_stop = false; 6032 #endif 6033 #endif 6034 #endif 6035 6036 #ifdef ENABLE_LE_PERIPHERAL 6037 bool advertising_stop = false; 6038 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6039 le_advertising_set_t * advertising_stop_set = NULL; 6040 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6041 bool periodic_advertising_stop = false; 6042 #endif 6043 #endif 6044 #endif 6045 6046 // check if own address changes 6047 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6048 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6049 6050 // check if whitelist needs modification 6051 bool whitelist_modification_pending = false; 6052 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6053 while (btstack_linked_list_iterator_has_next(&lit)){ 6054 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6055 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6056 whitelist_modification_pending = true; 6057 break; 6058 } 6059 } 6060 6061 // check if resolving list needs modification 6062 bool resolving_list_modification_pending = false; 6063 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6064 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6065 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6066 resolving_list_modification_pending = true; 6067 } 6068 #endif 6069 6070 #ifdef ENABLE_LE_CENTRAL 6071 6072 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6073 // check if periodic advertiser list needs modification 6074 bool periodic_list_modification_pending = false; 6075 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6076 while (btstack_linked_list_iterator_has_next(&lit)){ 6077 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6078 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6079 periodic_list_modification_pending = true; 6080 break; 6081 } 6082 } 6083 #endif 6084 6085 // scanning control 6086 if (hci_stack->le_scanning_active) { 6087 // stop if: 6088 // - parameter change required 6089 // - it's disabled 6090 // - whitelist change required but used for scanning 6091 // - resolving list modified 6092 // - own address changes 6093 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6094 if ((hci_stack->le_scanning_param_update) || 6095 !hci_stack->le_scanning_enabled || 6096 (scanning_uses_whitelist && whitelist_modification_pending) || 6097 resolving_list_modification_pending || 6098 random_address_change){ 6099 6100 scanning_stop = true; 6101 } 6102 } 6103 6104 // connecting control 6105 bool connecting_with_whitelist; 6106 switch (hci_stack->le_connecting_state){ 6107 case LE_CONNECTING_DIRECT: 6108 case LE_CONNECTING_WHITELIST: 6109 // stop connecting if: 6110 // - connecting uses white and whitelist modification pending 6111 // - if it got disabled 6112 // - resolving list modified 6113 // - own address changes 6114 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6115 if ((connecting_with_whitelist && whitelist_modification_pending) || 6116 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6117 resolving_list_modification_pending || 6118 random_address_change) { 6119 6120 connecting_stop = true; 6121 } 6122 break; 6123 default: 6124 break; 6125 } 6126 6127 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6128 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6129 // periodic sync control 6130 bool sync_with_advertiser_list; 6131 switch(hci_stack->le_periodic_sync_state){ 6132 case LE_CONNECTING_DIRECT: 6133 case LE_CONNECTING_WHITELIST: 6134 // stop sync if: 6135 // - sync with advertiser list and advertiser list modification pending 6136 // - if it got disabled 6137 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6138 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6139 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6140 periodic_sync_stop = true; 6141 } 6142 break; 6143 default: 6144 break; 6145 } 6146 #endif 6147 #endif 6148 6149 #endif /* ENABLE_LE_CENTRAL */ 6150 6151 #ifdef ENABLE_LE_PERIPHERAL 6152 // le advertisement control 6153 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6154 // stop if: 6155 // - parameter change required 6156 // - random address used in advertising and changes 6157 // - it's disabled 6158 // - whitelist change required but used for advertisement filter policy 6159 // - resolving list modified 6160 // - own address changes 6161 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6162 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6163 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6164 if (advertising_change || 6165 (advertising_uses_random_address && random_address_change) || 6166 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6167 (advertising_uses_whitelist && whitelist_modification_pending) || 6168 resolving_list_modification_pending || 6169 random_address_change) { 6170 6171 advertising_stop = true; 6172 } 6173 } 6174 6175 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6176 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6177 btstack_linked_list_iterator_t it; 6178 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6179 while (btstack_linked_list_iterator_has_next(&it)){ 6180 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6181 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6182 // stop if: 6183 // - parameter change required 6184 // - random address used in connectable advertising and changes 6185 // - it's disabled 6186 // - whitelist change required but used for advertisement filter policy 6187 // - resolving list modified 6188 // - own address changes 6189 // - advertisement set will be removed 6190 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6191 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6192 bool advertising_uses_random_address = 6193 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6194 advertising_connectable; 6195 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6196 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6197 bool advertising_set_random_address_change = 6198 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6199 bool advertising_set_will_be_removed = 6200 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6201 if (advertising_parameter_change || 6202 (advertising_uses_random_address && advertising_set_random_address_change) || 6203 (advertising_enabled == false) || 6204 (advertising_uses_whitelist && whitelist_modification_pending) || 6205 resolving_list_modification_pending || 6206 advertising_set_will_be_removed) { 6207 6208 advertising_stop = true; 6209 advertising_stop_set = advertising_set; 6210 break; 6211 } 6212 } 6213 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6214 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6215 // stop if: 6216 // - it's disabled 6217 // - parameter change required 6218 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6219 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6220 if ((periodic_enabled == false) || periodic_parameter_change){ 6221 periodic_advertising_stop = true; 6222 advertising_stop_set = advertising_set; 6223 } 6224 } 6225 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6226 } 6227 } 6228 #endif 6229 6230 #endif 6231 6232 6233 // Phase 2: stop everything that should be off during modifications 6234 6235 6236 // 2.1 Outgoing connection 6237 #ifdef ENABLE_LE_CENTRAL 6238 if (connecting_stop){ 6239 hci_send_cmd(&hci_le_create_connection_cancel); 6240 return true; 6241 } 6242 #endif 6243 6244 // 2.2 Scanning 6245 #ifdef ENABLE_LE_CENTRAL 6246 if (scanning_stop){ 6247 hci_stack->le_scanning_active = false; 6248 hci_le_scan_stop(); 6249 return true; 6250 } 6251 6252 // 2.3 Periodic Sync 6253 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6254 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6255 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6256 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6257 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6258 return true; 6259 } 6260 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6261 if (periodic_sync_stop){ 6262 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6263 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6264 return true; 6265 } 6266 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6267 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6268 #endif /* ENABLE_LE_CENTRAL */ 6269 6270 // 2.4 Advertising: legacy, extended, periodic 6271 #ifdef ENABLE_LE_PERIPHERAL 6272 if (advertising_stop){ 6273 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6274 if (hci_extended_advertising_supported()) { 6275 uint8_t advertising_stop_handle; 6276 if (advertising_stop_set != NULL){ 6277 advertising_stop_handle = advertising_stop_set->advertising_handle; 6278 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6279 } else { 6280 advertising_stop_handle = 0; 6281 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6282 } 6283 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6284 const uint16_t durations[] = { 0 }; 6285 const uint16_t max_events[] = { 0 }; 6286 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6287 } else 6288 #endif 6289 { 6290 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6291 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6292 } 6293 return true; 6294 } 6295 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6296 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6297 if (periodic_advertising_stop){ 6298 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6299 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6300 return true; 6301 } 6302 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6303 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6304 #endif /* ENABLE_LE_PERIPHERAL */ 6305 6306 6307 // Phase 3: modify 6308 6309 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6310 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6311 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6312 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6313 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6314 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6315 #endif 6316 return true; 6317 } 6318 6319 #ifdef ENABLE_LE_CENTRAL 6320 if (hci_stack->le_scanning_param_update){ 6321 hci_stack->le_scanning_param_update = false; 6322 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6323 if (hci_extended_advertising_supported()){ 6324 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6325 uint8_t scan_types[2]; 6326 uint16_t scan_intervals[2]; 6327 uint16_t scan_windows[2]; 6328 6329 uint8_t i; 6330 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6331 for (i=0;i<num_phys;i++){ 6332 scan_types[i] = hci_stack->le_scan_type; 6333 scan_intervals[i] = hci_stack->le_scan_interval; 6334 scan_windows[i] = hci_stack->le_scan_window; 6335 } 6336 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6337 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6338 } else 6339 #endif 6340 { 6341 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6342 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6343 } 6344 return true; 6345 } 6346 #endif 6347 6348 #ifdef ENABLE_LE_PERIPHERAL 6349 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6350 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6351 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6352 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6353 if (hci_extended_advertising_supported()){ 6354 // map advertisment type to advertising event properties 6355 uint16_t adv_event_properties = 0; 6356 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6357 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6358 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6359 } 6360 hci_stack->le_advertising_set_in_current_command = 0; 6361 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6362 0, 6363 adv_event_properties, 6364 hci_stack->le_advertisements_interval_min, 6365 hci_stack->le_advertisements_interval_max, 6366 hci_stack->le_advertisements_channel_map, 6367 hci_stack->le_advertisements_own_addr_type, 6368 hci_stack->le_advertisements_direct_address_type, 6369 hci_stack->le_advertisements_direct_address, 6370 hci_stack->le_advertisements_filter_policy, 6371 0x7f, // tx power: no preference 6372 0x01, // primary adv phy: LE 1M 6373 0, // secondary adv max skip 6374 0x01, // secondary adv phy 6375 0, // adv sid 6376 0 // scan request notification 6377 ); 6378 } else 6379 #endif 6380 { 6381 hci_send_cmd(&hci_le_set_advertising_parameters, 6382 hci_stack->le_advertisements_interval_min, 6383 hci_stack->le_advertisements_interval_max, 6384 hci_stack->le_advertisements_type, 6385 hci_stack->le_advertisements_own_addr_type, 6386 hci_stack->le_advertisements_direct_address_type, 6387 hci_stack->le_advertisements_direct_address, 6388 hci_stack->le_advertisements_channel_map, 6389 hci_stack->le_advertisements_filter_policy); 6390 } 6391 return true; 6392 } 6393 6394 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6395 // assumption: only set if extended advertising is supported 6396 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6397 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6398 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6399 return true; 6400 } 6401 #endif 6402 6403 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6404 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6405 uint8_t adv_data_clean[31]; 6406 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6407 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6408 hci_stack->le_advertisements_data_len); 6409 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6410 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6411 if (hci_extended_advertising_supported()){ 6412 hci_stack->le_advertising_set_in_current_command = 0; 6413 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6414 } else 6415 #endif 6416 { 6417 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6418 } 6419 return true; 6420 } 6421 6422 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6423 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6424 uint8_t scan_data_clean[31]; 6425 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6426 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6427 hci_stack->le_scan_response_data_len); 6428 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6429 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6430 if (hci_extended_advertising_supported()){ 6431 hci_stack->le_advertising_set_in_current_command = 0; 6432 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6433 } else 6434 #endif 6435 { 6436 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6437 } 6438 return true; 6439 } 6440 6441 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6442 if (hci_extended_advertising_supported()) { 6443 btstack_linked_list_iterator_t it; 6444 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6445 while (btstack_linked_list_iterator_has_next(&it)){ 6446 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6447 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6448 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6449 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6450 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6451 return true; 6452 } 6453 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6454 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6455 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6456 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6457 advertising_set->advertising_handle, 6458 advertising_set->extended_params.advertising_event_properties, 6459 advertising_set->extended_params.primary_advertising_interval_min, 6460 advertising_set->extended_params.primary_advertising_interval_max, 6461 advertising_set->extended_params.primary_advertising_channel_map, 6462 advertising_set->extended_params.own_address_type, 6463 advertising_set->extended_params.peer_address_type, 6464 advertising_set->extended_params.peer_address, 6465 advertising_set->extended_params.advertising_filter_policy, 6466 advertising_set->extended_params.advertising_tx_power, 6467 advertising_set->extended_params.primary_advertising_phy, 6468 advertising_set->extended_params.secondary_advertising_max_skip, 6469 advertising_set->extended_params.secondary_advertising_phy, 6470 advertising_set->extended_params.advertising_sid, 6471 advertising_set->extended_params.scan_request_notification_enable 6472 ); 6473 return true; 6474 } 6475 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6476 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6477 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6478 return true; 6479 } 6480 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6481 uint16_t pos = advertising_set->adv_data_pos; 6482 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6483 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6484 if ((operation & 0x02) != 0){ 6485 // last fragment or complete data 6486 operation |= 2; 6487 advertising_set->adv_data_pos = 0; 6488 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6489 } else { 6490 advertising_set->adv_data_pos += data_to_upload; 6491 } 6492 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6493 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6494 return true; 6495 } 6496 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6497 uint16_t pos = advertising_set->scan_data_pos; 6498 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6499 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6500 if ((operation & 0x02) != 0){ 6501 advertising_set->scan_data_pos = 0; 6502 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6503 } else { 6504 advertising_set->scan_data_pos += data_to_upload; 6505 } 6506 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6507 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6508 return true; 6509 } 6510 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6511 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6512 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6513 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6514 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6515 advertising_set->advertising_handle, 6516 advertising_set->periodic_params.periodic_advertising_interval_min, 6517 advertising_set->periodic_params.periodic_advertising_interval_max, 6518 advertising_set->periodic_params.periodic_advertising_properties); 6519 return true; 6520 } 6521 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6522 uint16_t pos = advertising_set->periodic_data_pos; 6523 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6524 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6525 if ((operation & 0x02) != 0){ 6526 // last fragment or complete data 6527 operation |= 2; 6528 advertising_set->periodic_data_pos = 0; 6529 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6530 } else { 6531 advertising_set->periodic_data_pos += data_to_upload; 6532 } 6533 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6534 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6535 return true; 6536 } 6537 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6538 } 6539 } 6540 #endif 6541 6542 #endif 6543 6544 #ifdef ENABLE_LE_CENTRAL 6545 // if connect with whitelist was active and is not cancelled yet, wait until next time 6546 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6547 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6548 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6549 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6550 #endif 6551 #endif 6552 6553 // LE Whitelist Management 6554 if (whitelist_modification_pending){ 6555 // add/remove entries 6556 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6557 while (btstack_linked_list_iterator_has_next(&lit)){ 6558 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6559 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6560 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6561 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6562 bd_addr_type_t address_type = entry->address_type; 6563 bd_addr_t address; 6564 memcpy(address, entry->address, 6); 6565 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6566 // remove from whitelist if not scheduled for re-addition 6567 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6568 btstack_memory_whitelist_entry_free(entry); 6569 } 6570 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6571 return true; 6572 } 6573 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6574 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6575 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6576 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6577 return true; 6578 } 6579 } 6580 } 6581 6582 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6583 // LE Resolving List Management 6584 if (resolving_list_supported) { 6585 uint16_t i; 6586 switch (hci_stack->le_resolving_list_state) { 6587 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6588 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6589 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6590 return true; 6591 case LE_RESOLVING_LIST_READ_SIZE: 6592 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6593 hci_send_cmd(&hci_le_read_resolving_list_size); 6594 return true; 6595 case LE_RESOLVING_LIST_SEND_CLEAR: 6596 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6597 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6598 sizeof(hci_stack->le_resolving_list_add_entries)); 6599 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6600 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6601 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6602 sizeof(hci_stack->le_resolving_list_remove_entries)); 6603 hci_send_cmd(&hci_le_clear_resolving_list); 6604 return true; 6605 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6606 // first remove old entries 6607 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6608 uint8_t offset = i >> 3; 6609 uint8_t mask = 1 << (i & 7); 6610 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6611 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6612 bd_addr_t peer_identity_addreses; 6613 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6614 sm_key_t peer_irk; 6615 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6616 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6617 6618 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6619 // trigger whitelist entry 'update' (work around for controller bug) 6620 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6621 while (btstack_linked_list_iterator_has_next(&lit)) { 6622 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6623 if (entry->address_type != peer_identity_addr_type) continue; 6624 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6625 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6626 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6627 } 6628 #endif 6629 6630 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6631 peer_identity_addreses); 6632 return true; 6633 } 6634 6635 // then add new entries 6636 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6637 uint8_t offset = i >> 3; 6638 uint8_t mask = 1 << (i & 7); 6639 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6640 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6641 bd_addr_t peer_identity_addreses; 6642 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6643 sm_key_t peer_irk; 6644 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6645 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6646 if (btstack_is_null(peer_irk, 16)) continue; 6647 const uint8_t *local_irk = gap_get_persistent_irk(); 6648 // command uses format specifier 'P' that stores 16-byte value without flip 6649 uint8_t local_irk_flipped[16]; 6650 uint8_t peer_irk_flipped[16]; 6651 reverse_128(local_irk, local_irk_flipped); 6652 reverse_128(peer_irk, peer_irk_flipped); 6653 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6654 peer_irk_flipped, local_irk_flipped); 6655 return true; 6656 } 6657 6658 // finally, set privacy mode 6659 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6660 uint8_t offset = i >> 3; 6661 uint8_t mask = 1 << (i & 7); 6662 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6663 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6664 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6665 // Network Privacy Mode is default 6666 continue; 6667 } 6668 bd_addr_t peer_identity_address; 6669 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6670 sm_key_t peer_irk; 6671 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6672 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6673 if (btstack_is_null(peer_irk, 16)) continue; 6674 // command uses format specifier 'P' that stores 16-byte value without flip 6675 uint8_t peer_irk_flipped[16]; 6676 reverse_128(peer_irk, peer_irk_flipped); 6677 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6678 return true; 6679 } 6680 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6681 break; 6682 6683 default: 6684 break; 6685 } 6686 } 6687 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6688 #endif 6689 6690 #ifdef ENABLE_LE_CENTRAL 6691 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6692 // LE Whitelist Management 6693 if (periodic_list_modification_pending){ 6694 // add/remove entries 6695 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6696 while (btstack_linked_list_iterator_has_next(&lit)){ 6697 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6698 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6699 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6700 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6701 return true; 6702 } 6703 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6704 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6705 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6706 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6707 return true; 6708 } 6709 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6710 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6711 btstack_memory_periodic_advertiser_list_entry_free(entry); 6712 } 6713 } 6714 } 6715 #endif 6716 #endif 6717 6718 #ifdef ENABLE_LE_CENTRAL 6719 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6720 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6721 if (hci_stack->le_past_set_default_params){ 6722 hci_stack->le_past_set_default_params = false; 6723 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6724 hci_stack->le_past_mode, 6725 hci_stack->le_past_skip, 6726 hci_stack->le_past_sync_timeout, 6727 hci_stack->le_past_cte_type); 6728 return true; 6729 } 6730 #endif 6731 #endif 6732 #endif 6733 6734 // post-pone all actions until stack is fully working 6735 if (hci_stack->state != HCI_STATE_WORKING) return false; 6736 6737 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6738 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6739 6740 // Phase 4: restore state 6741 6742 #ifdef ENABLE_LE_CENTRAL 6743 // re-start scanning 6744 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6745 hci_stack->le_scanning_active = true; 6746 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6747 if (hci_extended_advertising_supported()){ 6748 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6749 } else 6750 #endif 6751 { 6752 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6753 } 6754 return true; 6755 } 6756 #endif 6757 6758 #ifdef ENABLE_LE_CENTRAL 6759 // re-start connecting 6760 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6761 bd_addr_t null_addr; 6762 memset(null_addr, 0, 6); 6763 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6764 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6765 hci_send_le_create_connection(1, 0, null_addr); 6766 return true; 6767 } 6768 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6769 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6770 switch(hci_stack->le_periodic_sync_request){ 6771 case LE_CONNECTING_DIRECT: 6772 case LE_CONNECTING_WHITELIST: 6773 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6774 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6775 hci_stack->le_periodic_sync_options, 6776 hci_stack->le_periodic_sync_advertising_sid, 6777 hci_stack->le_periodic_sync_advertiser_address_type, 6778 hci_stack->le_periodic_sync_advertiser_address, 6779 hci_stack->le_periodic_sync_skip, 6780 hci_stack->le_periodic_sync_timeout, 6781 hci_stack->le_periodic_sync_cte_type); 6782 return true; 6783 default: 6784 break; 6785 } 6786 } 6787 #endif 6788 #endif 6789 6790 #ifdef ENABLE_LE_PERIPHERAL 6791 // re-start advertising 6792 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6793 // check if advertisements should be enabled given 6794 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6795 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6796 6797 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6798 if (hci_extended_advertising_supported()){ 6799 const uint8_t advertising_handles[] = { 0 }; 6800 const uint16_t durations[] = { 0 }; 6801 const uint16_t max_events[] = { 0 }; 6802 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6803 } else 6804 #endif 6805 { 6806 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6807 } 6808 return true; 6809 } 6810 6811 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6812 if (hci_extended_advertising_supported()) { 6813 btstack_linked_list_iterator_t it; 6814 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6815 while (btstack_linked_list_iterator_has_next(&it)) { 6816 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6817 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6818 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6819 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6820 const uint16_t durations[] = { advertising_set->enable_timeout }; 6821 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6822 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6823 return true; 6824 } 6825 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6826 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6827 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6828 uint8_t enable = 1; 6829 if (advertising_set->periodic_include_adi){ 6830 enable |= 2; 6831 } 6832 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6833 return true; 6834 } 6835 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6836 } 6837 } 6838 #endif 6839 #endif 6840 6841 return false; 6842 } 6843 6844 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6845 static bool hci_run_iso_tasks(void){ 6846 btstack_linked_list_iterator_t it; 6847 6848 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6849 return false; 6850 } 6851 6852 // BIG 6853 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6854 while (btstack_linked_list_iterator_has_next(&it)){ 6855 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6856 switch (big->state){ 6857 case LE_AUDIO_BIG_STATE_CREATE: 6858 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6859 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6860 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6861 hci_send_cmd(&hci_le_create_big, 6862 big->params->big_handle, 6863 big->params->advertising_handle, 6864 big->params->num_bis, 6865 big->params->sdu_interval_us, 6866 big->params->max_sdu, 6867 big->params->max_transport_latency_ms, 6868 big->params->rtn, 6869 big->params->phy, 6870 big->params->packing, 6871 big->params->framing, 6872 big->params->encryption, 6873 big->params->broadcast_code); 6874 return true; 6875 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6876 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6877 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); 6878 return true; 6879 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6880 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6881 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6882 return true; 6883 case LE_AUDIO_BIG_STATE_TERMINATE: 6884 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6885 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6886 return true; 6887 default: 6888 break; 6889 } 6890 } 6891 6892 // BIG Sync 6893 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6894 while (btstack_linked_list_iterator_has_next(&it)){ 6895 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6896 switch (big_sync->state){ 6897 case LE_AUDIO_BIG_STATE_CREATE: 6898 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6899 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6900 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6901 hci_send_cmd(&hci_le_big_create_sync, 6902 big_sync->params->big_handle, 6903 big_sync->params->sync_handle, 6904 big_sync->params->encryption, 6905 big_sync->params->broadcast_code, 6906 big_sync->params->mse, 6907 big_sync->params->big_sync_timeout_10ms, 6908 big_sync->params->num_bis, 6909 big_sync->params->bis_indices); 6910 return true; 6911 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6912 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6913 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); 6914 return true; 6915 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6916 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6917 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6918 return true; 6919 case LE_AUDIO_BIG_STATE_TERMINATE: 6920 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6921 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6922 return true; 6923 default: 6924 break; 6925 } 6926 } 6927 6928 // CIG 6929 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6930 while (btstack_linked_list_iterator_has_next(&it)) { 6931 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6932 uint8_t i; 6933 // Set CIG Parameters 6934 uint8_t cis_id[MAX_NR_CIS]; 6935 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6936 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6937 uint8_t phy_c_to_p[MAX_NR_CIS]; 6938 uint8_t phy_p_to_c[MAX_NR_CIS]; 6939 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6940 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6941 switch (cig->state) { 6942 case LE_AUDIO_CIG_STATE_CREATE: 6943 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6944 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6945 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6946 le_audio_cig_params_t * params = cig->params; 6947 for (i = 0; i < params->num_cis; i++) { 6948 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6949 cis_id[i] = cis_params->cis_id; 6950 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6951 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6952 phy_c_to_p[i] = cis_params->phy_c_to_p; 6953 phy_p_to_c[i] = cis_params->phy_p_to_c; 6954 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6955 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6956 } 6957 hci_send_cmd(&hci_le_set_cig_parameters, 6958 cig->cig_id, 6959 params->sdu_interval_c_to_p, 6960 params->sdu_interval_p_to_c, 6961 params->worst_case_sca, 6962 params->packing, 6963 params->framing, 6964 params->max_transport_latency_c_to_p, 6965 params->max_transport_latency_p_to_c, 6966 params->num_cis, 6967 cis_id, 6968 max_sdu_c_to_p, 6969 max_sdu_p_to_c, 6970 phy_c_to_p, 6971 phy_p_to_c, 6972 rtn_c_to_p, 6973 rtn_p_to_c 6974 ); 6975 return true; 6976 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6977 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6978 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6979 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6980 for (i=0;i<cig->num_cis;i++){ 6981 cig->cis_setup_active[i] = true; 6982 } 6983 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6984 return true; 6985 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6986 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6987 // find next path to setup 6988 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6989 if (cig->cis_established[cis_index] == false) { 6990 continue; 6991 } 6992 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6993 bool setup = true; 6994 if (cis_direction == 0){ 6995 // 0 - input - host to controller 6996 // we are central => central to peripheral 6997 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6998 } else { 6999 // 1 - output - controller to host 7000 // we are central => peripheral to central 7001 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7002 } 7003 if (setup){ 7004 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7005 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7006 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7007 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); 7008 return true; 7009 } 7010 cig->state_vars.next_cis++; 7011 } 7012 // emit done 7013 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7014 default: 7015 break; 7016 } 7017 } 7018 7019 // CIS Accept/Reject 7020 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7021 while (btstack_linked_list_iterator_has_next(&it)) { 7022 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7023 hci_con_handle_t con_handle; 7024 switch (iso_stream->state){ 7025 case HCI_ISO_STREAM_W2_ACCEPT: 7026 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7027 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7028 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7029 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7030 return true; 7031 case HCI_ISO_STREAM_W2_REJECT: 7032 con_handle = iso_stream->cis_handle; 7033 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7034 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7035 hci_iso_stream_finalize(iso_stream); 7036 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7037 return true; 7038 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7039 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7040 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7041 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7042 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); 7043 break; 7044 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7045 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7046 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7047 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7048 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); 7049 break; 7050 default: 7051 break; 7052 } 7053 } 7054 7055 return false; 7056 } 7057 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7058 #endif 7059 7060 static bool hci_run_general_pending_commands(void){ 7061 btstack_linked_item_t * it; 7062 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7063 hci_connection_t * connection = (hci_connection_t *) it; 7064 7065 switch(connection->state){ 7066 case SEND_CREATE_CONNECTION: 7067 switch(connection->address_type){ 7068 #ifdef ENABLE_CLASSIC 7069 case BD_ADDR_TYPE_ACL: 7070 log_info("sending hci_create_connection"); 7071 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7072 break; 7073 #endif 7074 default: 7075 #ifdef ENABLE_BLE 7076 #ifdef ENABLE_LE_CENTRAL 7077 log_info("sending hci_le_create_connection"); 7078 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7079 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7080 hci_send_le_create_connection(0, connection->address_type, connection->address); 7081 connection->state = SENT_CREATE_CONNECTION; 7082 #endif 7083 #endif 7084 break; 7085 } 7086 return true; 7087 7088 #ifdef ENABLE_CLASSIC 7089 case RECEIVED_CONNECTION_REQUEST: 7090 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7091 log_info("sending hci_accept_connection_request"); 7092 connection->state = ACCEPTED_CONNECTION_REQUEST; 7093 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7094 return true; 7095 } 7096 break; 7097 #endif 7098 case SEND_DISCONNECT: 7099 connection->state = SENT_DISCONNECT; 7100 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7101 return true; 7102 7103 default: 7104 break; 7105 } 7106 7107 // no further commands if connection is about to get shut down 7108 if (connection->state == SENT_DISCONNECT) continue; 7109 7110 #ifdef ENABLE_CLASSIC 7111 7112 // Handling link key request requires remote supported features 7113 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7114 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7115 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7116 7117 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7118 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7119 if (have_link_key && security_level_sufficient){ 7120 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7121 } else { 7122 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7123 } 7124 return true; 7125 } 7126 7127 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7128 log_info("denying to pin request"); 7129 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7130 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7131 return true; 7132 } 7133 7134 // security assessment requires remote features 7135 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7136 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7137 hci_ssp_assess_security_on_io_cap_request(connection); 7138 // 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 7139 } 7140 7141 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7142 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7143 // set authentication requirements: 7144 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7145 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7146 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7147 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7148 authreq |= 1; 7149 } 7150 bool bonding = hci_stack->bondable; 7151 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7152 // if we have received IO Cap Response, we're in responder role 7153 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7154 if (bonding && !remote_bonding){ 7155 log_info("Remote not bonding, dropping local flag"); 7156 bonding = false; 7157 } 7158 } 7159 if (bonding){ 7160 if (connection->bonding_flags & BONDING_DEDICATED){ 7161 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7162 } else { 7163 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7164 } 7165 } 7166 uint8_t have_oob_data = 0; 7167 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7168 if (connection->classic_oob_c_192 != NULL){ 7169 have_oob_data |= 1; 7170 } 7171 if (connection->classic_oob_c_256 != NULL){ 7172 have_oob_data |= 2; 7173 } 7174 #endif 7175 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7176 return true; 7177 } 7178 7179 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7180 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7181 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7182 return true; 7183 } 7184 7185 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7186 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7187 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7188 const uint8_t zero[16] = { 0 }; 7189 const uint8_t * r_192 = zero; 7190 const uint8_t * c_192 = zero; 7191 const uint8_t * r_256 = zero; 7192 const uint8_t * c_256 = zero; 7193 // verify P-256 OOB 7194 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7195 c_256 = connection->classic_oob_c_256; 7196 if (connection->classic_oob_r_256 != NULL) { 7197 r_256 = connection->classic_oob_r_256; 7198 } 7199 } 7200 // verify P-192 OOB 7201 if ((connection->classic_oob_c_192 != NULL)) { 7202 c_192 = connection->classic_oob_c_192; 7203 if (connection->classic_oob_r_192 != NULL) { 7204 r_192 = connection->classic_oob_r_192; 7205 } 7206 } 7207 7208 // assess security 7209 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7210 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7211 if (need_level_4 && !can_reach_level_4){ 7212 log_info("Level 4 required, but not possible -> abort"); 7213 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7214 // send oob negative reply 7215 c_256 = NULL; 7216 c_192 = NULL; 7217 } 7218 7219 // Reply 7220 if (c_256 != zero) { 7221 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7222 } else if (c_192 != zero){ 7223 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7224 } else { 7225 hci_stack->classic_oob_con_handle = connection->con_handle; 7226 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7227 } 7228 return true; 7229 } 7230 #endif 7231 7232 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7233 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7234 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7235 return true; 7236 } 7237 7238 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7239 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7240 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7241 return true; 7242 } 7243 7244 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7245 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7246 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7247 return true; 7248 } 7249 7250 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7251 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7252 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7253 connection->state = SENT_DISCONNECT; 7254 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7255 return true; 7256 } 7257 7258 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7259 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7260 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7261 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7262 return true; 7263 } 7264 7265 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7266 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7267 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7268 return true; 7269 } 7270 7271 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7272 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7273 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7274 return true; 7275 } 7276 7277 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7278 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7279 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7280 return true; 7281 } 7282 7283 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7284 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7285 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7286 return true; 7287 } 7288 7289 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7290 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7291 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7292 return true; 7293 } 7294 #endif 7295 7296 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7297 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7298 #ifdef ENABLE_CLASSIC 7299 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7300 #endif 7301 if (connection->state != SENT_DISCONNECT){ 7302 connection->state = SENT_DISCONNECT; 7303 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7304 return true; 7305 } 7306 } 7307 7308 #ifdef ENABLE_CLASSIC 7309 uint16_t sniff_min_interval; 7310 switch (connection->sniff_min_interval){ 7311 case 0: 7312 break; 7313 case 0xffff: 7314 connection->sniff_min_interval = 0; 7315 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7316 return true; 7317 default: 7318 sniff_min_interval = connection->sniff_min_interval; 7319 connection->sniff_min_interval = 0; 7320 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7321 return true; 7322 } 7323 7324 if (connection->sniff_subrating_max_latency != 0xffff){ 7325 uint16_t max_latency = connection->sniff_subrating_max_latency; 7326 connection->sniff_subrating_max_latency = 0; 7327 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7328 return true; 7329 } 7330 7331 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7332 uint8_t service_type = (uint8_t) connection->qos_service_type; 7333 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7334 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); 7335 return true; 7336 } 7337 7338 if (connection->request_role != HCI_ROLE_INVALID){ 7339 hci_role_t role = connection->request_role; 7340 connection->request_role = HCI_ROLE_INVALID; 7341 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7342 return true; 7343 } 7344 #endif 7345 7346 if (connection->gap_connection_tasks != 0){ 7347 #ifdef ENABLE_CLASSIC 7348 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7349 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7350 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7351 return true; 7352 } 7353 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7354 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7355 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7356 return true; 7357 } 7358 #endif 7359 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7360 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7361 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7362 return true; 7363 } 7364 #ifdef ENABLE_BLE 7365 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7366 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7367 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7368 return true; 7369 } 7370 #endif 7371 } 7372 7373 #ifdef ENABLE_BLE 7374 switch (connection->le_con_parameter_update_state){ 7375 // response to L2CAP CON PARAMETER UPDATE REQUEST 7376 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7377 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7378 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7379 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7380 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7381 return true; 7382 case CON_PARAMETER_UPDATE_REPLY: 7383 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7384 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7385 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7386 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7387 return true; 7388 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7389 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7390 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7391 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7392 return true; 7393 default: 7394 break; 7395 } 7396 if (connection->le_phy_update_all_phys != 0xffu){ 7397 uint8_t all_phys = connection->le_phy_update_all_phys; 7398 connection->le_phy_update_all_phys = 0xff; 7399 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); 7400 return true; 7401 } 7402 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7403 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7404 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7405 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7406 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7407 return true; 7408 } 7409 if (connection->le_past_advertising_handle != 0xff){ 7410 uint8_t advertising_handle = connection->le_past_advertising_handle; 7411 connection->le_past_advertising_handle = 0xff; 7412 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7413 return true; 7414 } 7415 #endif 7416 #endif 7417 } 7418 return false; 7419 } 7420 7421 static void hci_run(void){ 7422 7423 // stack state sub statemachines 7424 switch (hci_stack->state) { 7425 case HCI_STATE_INITIALIZING: 7426 hci_initializing_run(); 7427 break; 7428 case HCI_STATE_HALTING: 7429 hci_halting_run(); 7430 break; 7431 case HCI_STATE_FALLING_ASLEEP: 7432 hci_falling_asleep_run(); 7433 break; 7434 default: 7435 break; 7436 } 7437 7438 // allow to run after initialization to working transition 7439 if (hci_stack->state != HCI_STATE_WORKING){ 7440 return; 7441 } 7442 7443 bool done; 7444 7445 // send continuation fragments first, as they block the prepared packet buffer 7446 done = hci_run_acl_fragments(); 7447 if (done) return; 7448 7449 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7450 done = hci_run_iso_fragments(); 7451 if (done) return; 7452 #endif 7453 7454 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7455 // send host num completed packets next as they don't require num_cmd_packets > 0 7456 if (!hci_can_send_comand_packet_transport()) return; 7457 if (hci_stack->host_completed_packets){ 7458 hci_host_num_completed_packets(); 7459 return; 7460 } 7461 #endif 7462 7463 if (!hci_can_send_command_packet_now()) return; 7464 7465 // global/non-connection oriented commands 7466 7467 7468 #ifdef ENABLE_CLASSIC 7469 // general gap classic 7470 done = hci_run_general_gap_classic(); 7471 if (done) return; 7472 #endif 7473 7474 #ifdef ENABLE_BLE 7475 // general gap le 7476 done = hci_run_general_gap_le(); 7477 if (done) return; 7478 7479 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7480 // ISO related tasks, e.g. BIG create/terminate/sync 7481 done = hci_run_iso_tasks(); 7482 if (done) return; 7483 #endif 7484 #endif 7485 7486 // send pending HCI commands 7487 hci_run_general_pending_commands(); 7488 } 7489 7490 #ifdef ENABLE_CLASSIC 7491 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7492 // bits 6-9 are 'don't use' 7493 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7494 7495 // restrict packet types to local and remote supported 7496 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7497 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7498 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7499 } 7500 #endif 7501 7502 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7503 // house-keeping 7504 7505 #ifdef ENABLE_CLASSIC 7506 bd_addr_t addr; 7507 hci_connection_t * conn; 7508 #endif 7509 #ifdef ENABLE_LE_CENTRAL 7510 uint8_t initiator_filter_policy; 7511 #endif 7512 7513 uint16_t opcode = little_endian_read_16(packet, 0); 7514 switch (opcode) { 7515 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7516 hci_stack->loopback_mode = packet[3]; 7517 break; 7518 7519 #ifdef ENABLE_CLASSIC 7520 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7521 reverse_bd_addr(&packet[3], addr); 7522 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7523 7524 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7525 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7526 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7527 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7528 } 7529 7530 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7531 if (!conn) { 7532 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7533 if (!conn) { 7534 // notify client that alloc failed 7535 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7536 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7537 } 7538 conn->state = SEND_CREATE_CONNECTION; 7539 } 7540 7541 log_info("conn state %u", conn->state); 7542 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7543 switch (conn->state) { 7544 // if connection active exists 7545 case OPEN: 7546 // and OPEN, emit connection complete command 7547 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7548 // packet not sent to controller 7549 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7550 case RECEIVED_DISCONNECTION_COMPLETE: 7551 // create connection triggered in disconnect complete event, let's do it now 7552 break; 7553 case SEND_CREATE_CONNECTION: 7554 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7555 if (hci_classic_operation_active()){ 7556 return ERROR_CODE_SUCCESS; 7557 } 7558 #endif 7559 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7560 break; 7561 default: 7562 // otherwise, just ignore as it is already in the open process 7563 // packet not sent to controller 7564 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7565 } 7566 conn->state = SENT_CREATE_CONNECTION; 7567 7568 // track outgoing connection 7569 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7570 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7571 break; 7572 7573 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7574 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7575 if (conn == NULL) { 7576 // neither SCO nor ACL connection for con handle 7577 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7578 } else { 7579 uint16_t remote_supported_sco_packets; 7580 switch (conn->address_type){ 7581 case BD_ADDR_TYPE_ACL: 7582 // assert SCO connection does not exit 7583 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7584 return ERROR_CODE_COMMAND_DISALLOWED; 7585 } 7586 // cache remote sco packet types 7587 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7588 7589 // allocate connection struct 7590 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7591 HCI_ROLE_MASTER); 7592 if (!conn) { 7593 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7594 } 7595 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7596 break; 7597 case BD_ADDR_TYPE_SCO: 7598 // update of existing SCO connection 7599 break; 7600 default: 7601 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7602 } 7603 } 7604 7605 // conn refers to hci connection of type sco now 7606 7607 conn->state = SENT_CREATE_CONNECTION; 7608 7609 // track outgoing connection to handle command status with error 7610 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7611 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7612 7613 // setup_synchronous_connection? Voice setting at offset 22 7614 // TODO: compare to current setting if sco connection already active 7615 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7616 7617 // derive sco payload length from packet types 7618 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7619 break; 7620 7621 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7622 // get SCO connection 7623 reverse_bd_addr(&packet[3], addr); 7624 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7625 if (conn == NULL){ 7626 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7627 } 7628 7629 conn->state = ACCEPTED_CONNECTION_REQUEST; 7630 7631 // track outgoing connection to handle command status with error 7632 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7633 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7634 7635 // accept_synchronous_connection? Voice setting at offset 18 7636 // TODO: compare to current setting if sco connection already active 7637 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7638 7639 // derive sco payload length from packet types 7640 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7641 break; 7642 #endif 7643 7644 #ifdef ENABLE_BLE 7645 #ifdef ENABLE_LE_CENTRAL 7646 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7647 // white list used? 7648 initiator_filter_policy = packet[7]; 7649 switch (initiator_filter_policy) { 7650 case 0: 7651 // whitelist not used 7652 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7653 break; 7654 case 1: 7655 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7656 break; 7657 default: 7658 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7659 break; 7660 } 7661 // track outgoing connection 7662 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7663 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7664 break; 7665 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7666 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7667 // white list used? 7668 initiator_filter_policy = packet[3]; 7669 switch (initiator_filter_policy) { 7670 case 0: 7671 // whitelist not used 7672 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7673 break; 7674 case 1: 7675 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7676 break; 7677 default: 7678 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7679 break; 7680 } 7681 // track outgoing connection 7682 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7683 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7684 break; 7685 #endif 7686 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7687 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7688 break; 7689 #endif 7690 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7691 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7692 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7693 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7694 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7695 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7696 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7697 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7698 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7699 case HCI_OPCODE_HCI_LE_READ_PHY: 7700 case HCI_OPCODE_HCI_LE_SET_PHY: 7701 // conection handle is first command parameter 7702 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7703 break; 7704 #endif 7705 #endif /* ENABLE_BLE */ 7706 default: 7707 break; 7708 } 7709 7710 hci_stack->num_cmd_packets--; 7711 7712 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7713 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7714 if (err != 0){ 7715 return ERROR_CODE_HARDWARE_FAILURE; 7716 } 7717 return ERROR_CODE_SUCCESS; 7718 } 7719 7720 // disconnect because of security block 7721 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7722 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7723 if (!connection) return; 7724 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7725 } 7726 7727 7728 // Configure Secure Simple Pairing 7729 7730 #ifdef ENABLE_CLASSIC 7731 7732 // enable will enable SSP during init 7733 void gap_ssp_set_enable(int enable){ 7734 hci_stack->ssp_enable = enable; 7735 } 7736 7737 static int hci_local_ssp_activated(void){ 7738 return gap_ssp_supported() && hci_stack->ssp_enable; 7739 } 7740 7741 // if set, BTstack will respond to io capability request using authentication requirement 7742 void gap_ssp_set_io_capability(int io_capability){ 7743 hci_stack->ssp_io_capability = io_capability; 7744 } 7745 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7746 hci_stack->ssp_authentication_requirement = authentication_requirement; 7747 } 7748 7749 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7750 void gap_ssp_set_auto_accept(int auto_accept){ 7751 hci_stack->ssp_auto_accept = auto_accept; 7752 } 7753 7754 void gap_secure_connections_enable(bool enable){ 7755 hci_stack->secure_connections_enable = enable; 7756 } 7757 bool gap_secure_connections_active(void){ 7758 return hci_stack->secure_connections_active; 7759 } 7760 7761 #endif 7762 7763 // va_list part of hci_send_cmd 7764 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7765 if (!hci_can_send_command_packet_now()){ 7766 log_error("hci_send_cmd called but cannot send packet now"); 7767 return ERROR_CODE_COMMAND_DISALLOWED; 7768 } 7769 7770 // for HCI INITIALIZATION 7771 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7772 hci_stack->last_cmd_opcode = cmd->opcode; 7773 7774 hci_reserve_packet_buffer(); 7775 uint8_t * packet = hci_stack->hci_packet_buffer; 7776 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7777 uint8_t status = hci_send_cmd_packet(packet, size); 7778 7779 // release packet buffer on error or for synchronous transport implementations 7780 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7781 hci_release_packet_buffer(); 7782 hci_emit_transport_packet_sent(); 7783 } 7784 7785 return status; 7786 } 7787 7788 /** 7789 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7790 */ 7791 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7792 va_list argptr; 7793 va_start(argptr, cmd); 7794 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7795 va_end(argptr); 7796 return status; 7797 } 7798 7799 // Create various non-HCI events. 7800 // TODO: generalize, use table similar to hci_create_command 7801 7802 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7803 // dump packet 7804 if (dump) { 7805 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7806 } 7807 7808 // dispatch to all event handlers 7809 btstack_linked_list_iterator_t it; 7810 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7811 while (btstack_linked_list_iterator_has_next(&it)){ 7812 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7813 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7814 } 7815 } 7816 7817 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7818 if (!hci_stack->acl_packet_handler) return; 7819 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7820 } 7821 7822 #ifdef ENABLE_CLASSIC 7823 static void hci_notify_if_sco_can_send_now(void){ 7824 // notify SCO sender if waiting 7825 if (!hci_stack->sco_waiting_for_can_send_now) return; 7826 if (hci_can_send_sco_packet_now()){ 7827 hci_stack->sco_waiting_for_can_send_now = 0; 7828 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7829 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7830 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7831 } 7832 } 7833 7834 // parsing end emitting has been merged to reduce code size 7835 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7836 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7837 7838 uint8_t * eir_data; 7839 ad_context_t context; 7840 const uint8_t * name; 7841 uint8_t name_len; 7842 7843 if (size < 3) return; 7844 7845 int event_type = hci_event_packet_get_type(packet); 7846 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7847 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7848 7849 switch (event_type){ 7850 case HCI_EVENT_INQUIRY_RESULT: 7851 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7852 if (size != (3 + (num_responses * 14))) return; 7853 break; 7854 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7855 if (size != 257) return; 7856 if (num_responses != 1) return; 7857 break; 7858 default: 7859 return; 7860 } 7861 7862 // event[1] is set at the end 7863 int i; 7864 for (i=0; i<num_responses;i++){ 7865 memset(event, 0, sizeof(event)); 7866 event[0] = GAP_EVENT_INQUIRY_RESULT; 7867 uint8_t event_size = 27; // if name is not set by EIR 7868 7869 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7870 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7871 (void)memcpy(&event[9], 7872 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7873 3); // class of device 7874 (void)memcpy(&event[12], 7875 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7876 2); // clock offset 7877 7878 switch (event_type){ 7879 case HCI_EVENT_INQUIRY_RESULT: 7880 // 14,15,16,17 = 0, size 18 7881 break; 7882 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7883 event[14] = 1; 7884 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7885 // 16,17 = 0, size 18 7886 break; 7887 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7888 event[14] = 1; 7889 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7890 // EIR packets only contain a single inquiry response 7891 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7892 name = NULL; 7893 // Iterate over EIR data 7894 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7895 uint8_t data_type = ad_iterator_get_data_type(&context); 7896 uint8_t data_size = ad_iterator_get_data_len(&context); 7897 const uint8_t * data = ad_iterator_get_data(&context); 7898 // Prefer Complete Local Name over Shortened Local Name 7899 switch (data_type){ 7900 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7901 if (name) continue; 7902 /* fall through */ 7903 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7904 name = data; 7905 name_len = data_size; 7906 break; 7907 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7908 if (data_size != 8) break; 7909 event[16] = 1; 7910 memcpy(&event[17], data, 8); 7911 break; 7912 default: 7913 break; 7914 } 7915 } 7916 if (name){ 7917 event[25] = 1; 7918 // truncate name if needed 7919 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7920 event[26] = len; 7921 (void)memcpy(&event[27], name, len); 7922 event_size += len; 7923 } 7924 break; 7925 default: 7926 return; 7927 } 7928 event[1] = event_size - 2; 7929 hci_emit_event(event, event_size, 1); 7930 } 7931 } 7932 #endif 7933 7934 void hci_emit_state(void){ 7935 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7936 uint8_t event[3]; 7937 event[0] = BTSTACK_EVENT_STATE; 7938 event[1] = sizeof(event) - 2u; 7939 event[2] = hci_stack->state; 7940 hci_emit_event(event, sizeof(event), 1); 7941 } 7942 7943 #ifdef ENABLE_CLASSIC 7944 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7945 uint8_t event[13]; 7946 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7947 event[1] = sizeof(event) - 2; 7948 event[2] = status; 7949 little_endian_store_16(event, 3, con_handle); 7950 reverse_bd_addr(address, &event[5]); 7951 event[11] = 1; // ACL connection 7952 event[12] = 0; // encryption disabled 7953 hci_emit_event(event, sizeof(event), 1); 7954 } 7955 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7956 if (disable_l2cap_timeouts) return; 7957 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7958 uint8_t event[4]; 7959 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7960 event[1] = sizeof(event) - 2; 7961 little_endian_store_16(event, 2, conn->con_handle); 7962 hci_emit_event(event, sizeof(event), 1); 7963 } 7964 #endif 7965 7966 #ifdef ENABLE_BLE 7967 #ifdef ENABLE_LE_CENTRAL 7968 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){ 7969 uint8_t hci_event[21]; 7970 hci_event[0] = HCI_EVENT_LE_META; 7971 hci_event[1] = sizeof(hci_event) - 2u; 7972 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7973 hci_event[3] = status; 7974 little_endian_store_16(hci_event, 4, con_handle); 7975 hci_event[6] = 0; // TODO: role 7976 hci_event[7] = address_type; 7977 reverse_bd_addr(address, &hci_event[8]); 7978 little_endian_store_16(hci_event, 14, 0); // interval 7979 little_endian_store_16(hci_event, 16, 0); // latency 7980 little_endian_store_16(hci_event, 18, 0); // supervision timeout 7981 hci_event[20] = 0; // master clock accuracy 7982 hci_emit_event(hci_event, sizeof(hci_event), 1); 7983 // emit GAP event, too 7984 uint8_t gap_event[36]; 7985 hci_create_gap_connection_complete_event(hci_event, gap_event); 7986 hci_emit_event(gap_event, sizeof(gap_event), 1); 7987 } 7988 #endif 7989 #endif 7990 7991 static void hci_emit_transport_packet_sent(void){ 7992 // notify upper stack that it might be possible to send again 7993 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7994 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7995 } 7996 7997 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7998 uint8_t event[6]; 7999 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8000 event[1] = sizeof(event) - 2u; 8001 event[2] = 0; // status = OK 8002 little_endian_store_16(event, 3, con_handle); 8003 event[5] = reason; 8004 hci_emit_event(event, sizeof(event), 1); 8005 } 8006 8007 static void hci_emit_nr_connections_changed(void){ 8008 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8009 uint8_t event[3]; 8010 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8011 event[1] = sizeof(event) - 2u; 8012 event[2] = nr_hci_connections(); 8013 hci_emit_event(event, sizeof(event), 1); 8014 } 8015 8016 static void hci_emit_hci_open_failed(void){ 8017 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8018 uint8_t event[2]; 8019 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8020 event[1] = sizeof(event) - 2u; 8021 hci_emit_event(event, sizeof(event), 1); 8022 } 8023 8024 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8025 log_info("hci_emit_dedicated_bonding_result %u ", status); 8026 uint8_t event[9]; 8027 int pos = 0; 8028 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8029 event[pos++] = sizeof(event) - 2u; 8030 event[pos++] = status; 8031 reverse_bd_addr(address, &event[pos]); 8032 hci_emit_event(event, sizeof(event), 1); 8033 } 8034 8035 8036 #ifdef ENABLE_CLASSIC 8037 8038 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8039 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8040 uint8_t event[5]; 8041 int pos = 0; 8042 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8043 event[pos++] = sizeof(event) - 2; 8044 little_endian_store_16(event, 2, con_handle); 8045 pos += 2; 8046 event[pos++] = level; 8047 hci_emit_event(event, sizeof(event), 1); 8048 } 8049 8050 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8051 if (!connection) return LEVEL_0; 8052 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8053 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8054 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8055 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8056 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8057 // LEVEL 4 always requires 128 bit encrytion key size 8058 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8059 security_level = LEVEL_3; 8060 } 8061 return security_level; 8062 } 8063 8064 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8065 uint8_t event[4]; 8066 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8067 event[1] = sizeof(event) - 2; 8068 event[2] = discoverable; 8069 event[3] = connectable; 8070 hci_emit_event(event, sizeof(event), 1); 8071 } 8072 8073 // query if remote side supports eSCO 8074 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8075 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8076 if (!connection) return false; 8077 return (connection->remote_supported_features[0] & 1) != 0; 8078 } 8079 8080 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8081 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8082 if (!connection) return 0; 8083 return connection->remote_supported_sco_packets; 8084 } 8085 8086 static bool hci_ssp_supported(hci_connection_t * connection){ 8087 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8088 return (connection->bonding_flags & mask) == mask; 8089 } 8090 8091 // query if remote side supports SSP 8092 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8093 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8094 if (!connection) return false; 8095 return hci_ssp_supported(connection) ? 1 : 0; 8096 } 8097 8098 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8099 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8100 } 8101 8102 /** 8103 * Check if remote supported features query has completed 8104 */ 8105 bool hci_remote_features_available(hci_con_handle_t handle){ 8106 hci_connection_t * connection = hci_connection_for_handle(handle); 8107 if (!connection) return false; 8108 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8109 } 8110 8111 /** 8112 * Trigger remote supported features query 8113 */ 8114 8115 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8116 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8117 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8118 } 8119 } 8120 8121 void hci_remote_features_query(hci_con_handle_t con_handle){ 8122 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8123 if (!connection) return; 8124 hci_trigger_remote_features_for_connection(connection); 8125 hci_run(); 8126 } 8127 8128 // GAP API 8129 /** 8130 * @bbrief enable/disable bonding. default is enabled 8131 * @praram enabled 8132 */ 8133 void gap_set_bondable_mode(int enable){ 8134 hci_stack->bondable = enable ? 1 : 0; 8135 } 8136 /** 8137 * @brief Get bondable mode. 8138 * @return 1 if bondable 8139 */ 8140 int gap_get_bondable_mode(void){ 8141 return hci_stack->bondable; 8142 } 8143 8144 /** 8145 * @brief map link keys to security levels 8146 */ 8147 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8148 switch (link_key_type){ 8149 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8150 return LEVEL_4; 8151 case COMBINATION_KEY: 8152 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8153 return LEVEL_3; 8154 default: 8155 return LEVEL_2; 8156 } 8157 } 8158 8159 /** 8160 * @brief map link keys to secure connection yes/no 8161 */ 8162 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8163 switch (link_key_type){ 8164 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8165 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8166 return true; 8167 default: 8168 return false; 8169 } 8170 } 8171 8172 /** 8173 * @brief map link keys to authenticated 8174 */ 8175 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8176 switch (link_key_type){ 8177 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8178 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8179 return true; 8180 default: 8181 return false; 8182 } 8183 } 8184 8185 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8186 log_info("gap_mitm_protection_required_for_security_level %u", level); 8187 return level > LEVEL_2; 8188 } 8189 8190 /** 8191 * @brief get current security level 8192 */ 8193 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8194 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8195 if (!connection) return LEVEL_0; 8196 return gap_security_level_for_connection(connection); 8197 } 8198 8199 /** 8200 * @brief request connection to device to 8201 * @result GAP_AUTHENTICATION_RESULT 8202 */ 8203 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8204 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8205 if (!connection){ 8206 hci_emit_security_level(con_handle, LEVEL_0); 8207 return; 8208 } 8209 8210 btstack_assert(hci_is_le_connection(connection) == false); 8211 8212 // 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) 8213 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8214 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8215 requested_level = LEVEL_4; 8216 } 8217 8218 gap_security_level_t current_level = gap_security_level(con_handle); 8219 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8220 requested_level, connection->requested_security_level, current_level); 8221 8222 // authentication active if authentication request was sent or planned level > 0 8223 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8224 if (authentication_active){ 8225 // authentication already active 8226 if (connection->requested_security_level < requested_level){ 8227 // increase requested level as new level is higher 8228 // TODO: handle re-authentication when done 8229 connection->requested_security_level = requested_level; 8230 } 8231 } else { 8232 // no request active, notify if security sufficient 8233 if (requested_level <= current_level){ 8234 hci_emit_security_level(con_handle, current_level); 8235 return; 8236 } 8237 8238 // store request 8239 connection->requested_security_level = requested_level; 8240 8241 // start to authenticate connection 8242 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8243 8244 // request remote features if not already active, also trigger hci_run 8245 hci_remote_features_query(con_handle); 8246 } 8247 } 8248 8249 /** 8250 * @brief start dedicated bonding with device. disconnect after bonding 8251 * @param device 8252 * @param request MITM protection 8253 * @result GAP_DEDICATED_BONDING_COMPLETE 8254 */ 8255 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8256 8257 // create connection state machine 8258 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8259 8260 if (!connection){ 8261 return BTSTACK_MEMORY_ALLOC_FAILED; 8262 } 8263 8264 // delete link key 8265 gap_drop_link_key_for_bd_addr(device); 8266 8267 // configure LEVEL_2/3, dedicated bonding 8268 connection->state = SEND_CREATE_CONNECTION; 8269 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8270 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8271 connection->bonding_flags = BONDING_DEDICATED; 8272 8273 hci_run(); 8274 8275 return 0; 8276 } 8277 8278 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8279 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8280 if (connection == NULL){ 8281 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8282 } 8283 if (defer){ 8284 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8285 } else { 8286 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8287 // trigger disconnect 8288 hci_run(); 8289 } 8290 return ERROR_CODE_SUCCESS; 8291 } 8292 8293 void gap_set_local_name(const char * local_name){ 8294 hci_stack->local_name = local_name; 8295 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8296 // also update EIR if not set by user 8297 if (hci_stack->eir_data == NULL){ 8298 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8299 } 8300 hci_run(); 8301 } 8302 #endif 8303 8304 8305 #ifdef ENABLE_BLE 8306 8307 #ifdef ENABLE_LE_CENTRAL 8308 void gap_start_scan(void){ 8309 hci_stack->le_scanning_enabled = true; 8310 hci_run(); 8311 } 8312 8313 void gap_stop_scan(void){ 8314 hci_stack->le_scanning_enabled = false; 8315 hci_run(); 8316 } 8317 8318 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8319 hci_stack->le_scan_type = scan_type; 8320 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8321 hci_stack->le_scan_interval = scan_interval; 8322 hci_stack->le_scan_window = scan_window; 8323 hci_stack->le_scanning_param_update = true; 8324 hci_run(); 8325 } 8326 8327 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8328 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8329 } 8330 8331 void gap_set_scan_duplicate_filter(bool enabled){ 8332 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8333 } 8334 8335 void gap_set_scan_phys(uint8_t phys){ 8336 // LE Coded and LE 1M PHY 8337 hci_stack->le_scan_phys = phys & 0x05; 8338 } 8339 8340 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8341 // disallow le connection if outgoing already active 8342 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8343 log_error("le connect already active"); 8344 return ERROR_CODE_COMMAND_DISALLOWED; 8345 } 8346 8347 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8348 if (conn == NULL) { 8349 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8350 if (conn == false){ 8351 // alloc failed 8352 log_info("gap_connect: failed to alloc hci_connection_t"); 8353 return BTSTACK_MEMORY_ALLOC_FAILED; 8354 } 8355 } else { 8356 switch (conn->state) { 8357 case RECEIVED_DISCONNECTION_COMPLETE: 8358 // connection was just disconnected, reset state and allow re-connect 8359 conn->role = HCI_ROLE_MASTER; 8360 break; 8361 default: 8362 return ERROR_CODE_COMMAND_DISALLOWED; 8363 } 8364 } 8365 8366 // set le connecting state 8367 if (hci_is_le_connection_type(addr_type)){ 8368 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8369 } 8370 8371 // trigger connect 8372 log_info("gap_connect: send create connection next"); 8373 conn->state = SEND_CREATE_CONNECTION; 8374 hci_run(); 8375 return ERROR_CODE_SUCCESS; 8376 } 8377 8378 // @assumption: only a single outgoing LE Connection exists 8379 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8380 btstack_linked_item_t *it; 8381 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8382 hci_connection_t * conn = (hci_connection_t *) it; 8383 if (hci_is_le_connection(conn)){ 8384 switch (conn->state){ 8385 case SEND_CREATE_CONNECTION: 8386 case SENT_CREATE_CONNECTION: 8387 return conn; 8388 default: 8389 break; 8390 }; 8391 } 8392 } 8393 return NULL; 8394 } 8395 8396 uint8_t gap_connect_cancel(void){ 8397 hci_connection_t * conn; 8398 switch (hci_stack->le_connecting_request){ 8399 case LE_CONNECTING_IDLE: 8400 break; 8401 case LE_CONNECTING_WHITELIST: 8402 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8403 hci_run(); 8404 break; 8405 case LE_CONNECTING_DIRECT: 8406 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8407 conn = gap_get_outgoing_le_connection(); 8408 if (conn == NULL){ 8409 hci_run(); 8410 } else { 8411 switch (conn->state){ 8412 case SEND_CREATE_CONNECTION: 8413 // skip sending create connection and emit event instead 8414 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8415 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8416 btstack_memory_hci_connection_free( conn ); 8417 break; 8418 case SENT_CREATE_CONNECTION: 8419 // let hci_run_general_gap_le cancel outgoing connection 8420 hci_run(); 8421 break; 8422 default: 8423 break; 8424 } 8425 } 8426 break; 8427 default: 8428 btstack_unreachable(); 8429 break; 8430 } 8431 return ERROR_CODE_SUCCESS; 8432 } 8433 8434 /** 8435 * @brief Set connection parameters for outgoing connections 8436 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8437 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8438 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8439 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8440 * @param conn_latency, default: 4 8441 * @param supervision_timeout (unit: 10ms), default: 720 ms 8442 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8443 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8444 */ 8445 8446 void gap_set_connection_phys(uint8_t phys){ 8447 // LE Coded, LE 1M, LE 2M PHY 8448 hci_stack->le_connection_phys = phys & 7; 8449 } 8450 8451 #endif 8452 8453 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8454 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8455 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8456 hci_stack->le_connection_scan_interval = conn_scan_interval; 8457 hci_stack->le_connection_scan_window = conn_scan_window; 8458 hci_stack->le_connection_interval_min = conn_interval_min; 8459 hci_stack->le_connection_interval_max = conn_interval_max; 8460 hci_stack->le_connection_latency = conn_latency; 8461 hci_stack->le_supervision_timeout = supervision_timeout; 8462 hci_stack->le_minimum_ce_length = min_ce_length; 8463 hci_stack->le_maximum_ce_length = max_ce_length; 8464 } 8465 8466 /** 8467 * @brief Updates the connection parameters for a given LE connection 8468 * @param handle 8469 * @param conn_interval_min (unit: 1.25ms) 8470 * @param conn_interval_max (unit: 1.25ms) 8471 * @param conn_latency 8472 * @param supervision_timeout (unit: 10ms) 8473 * @return 0 if ok 8474 */ 8475 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8476 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8477 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8478 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8479 connection->le_conn_interval_min = conn_interval_min; 8480 connection->le_conn_interval_max = conn_interval_max; 8481 connection->le_conn_latency = conn_latency; 8482 connection->le_supervision_timeout = supervision_timeout; 8483 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8484 hci_run(); 8485 return 0; 8486 } 8487 8488 /** 8489 * @brief Request an update of the connection parameter for a given LE connection 8490 * @param handle 8491 * @param conn_interval_min (unit: 1.25ms) 8492 * @param conn_interval_max (unit: 1.25ms) 8493 * @param conn_latency 8494 * @param supervision_timeout (unit: 10ms) 8495 * @return 0 if ok 8496 */ 8497 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8498 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8499 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8500 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8501 connection->le_conn_interval_min = conn_interval_min; 8502 connection->le_conn_interval_max = conn_interval_max; 8503 connection->le_conn_latency = conn_latency; 8504 connection->le_supervision_timeout = supervision_timeout; 8505 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8506 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8507 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8508 return 0; 8509 } 8510 8511 #ifdef ENABLE_LE_PERIPHERAL 8512 8513 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8514 static void hci_assert_advertisement_set_0_ready(void){ 8515 // force advertising set creation for legacy LE Advertising 8516 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8517 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8518 } 8519 } 8520 #endif 8521 8522 /** 8523 * @brief Set Advertisement Data 8524 * @param advertising_data_length 8525 * @param advertising_data (max 31 octets) 8526 * @note data is not copied, pointer has to stay valid 8527 */ 8528 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8529 hci_stack->le_advertisements_data_len = advertising_data_length; 8530 hci_stack->le_advertisements_data = advertising_data; 8531 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8532 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8533 hci_assert_advertisement_set_0_ready(); 8534 #endif 8535 hci_run(); 8536 } 8537 8538 /** 8539 * @brief Set Scan Response Data 8540 * @param advertising_data_length 8541 * @param advertising_data (max 31 octets) 8542 * @note data is not copied, pointer has to stay valid 8543 */ 8544 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8545 hci_stack->le_scan_response_data_len = scan_response_data_length; 8546 hci_stack->le_scan_response_data = scan_response_data; 8547 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8548 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8549 hci_assert_advertisement_set_0_ready(); 8550 #endif 8551 hci_run(); 8552 } 8553 8554 /** 8555 * @brief Set Advertisement Parameters 8556 * @param adv_int_min 8557 * @param adv_int_max 8558 * @param adv_type 8559 * @param direct_address_type 8560 * @param direct_address 8561 * @param channel_map 8562 * @param filter_policy 8563 * 8564 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8565 */ 8566 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8567 uint8_t direct_address_typ, bd_addr_t direct_address, 8568 uint8_t channel_map, uint8_t filter_policy) { 8569 8570 hci_stack->le_advertisements_interval_min = adv_int_min; 8571 hci_stack->le_advertisements_interval_max = adv_int_max; 8572 hci_stack->le_advertisements_type = adv_type; 8573 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8574 hci_stack->le_advertisements_channel_map = channel_map; 8575 hci_stack->le_advertisements_filter_policy = filter_policy; 8576 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8577 6); 8578 8579 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8580 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8581 hci_run(); 8582 } 8583 8584 /** 8585 * @brief Enable/Disable Advertisements 8586 * @param enabled 8587 */ 8588 void gap_advertisements_enable(int enabled){ 8589 if (enabled == 0){ 8590 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8591 } else { 8592 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8593 } 8594 hci_update_advertisements_enabled_for_current_roles(); 8595 hci_run(); 8596 } 8597 8598 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8599 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8600 btstack_linked_list_iterator_t it; 8601 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8602 while (btstack_linked_list_iterator_has_next(&it)){ 8603 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8604 if ( item->advertising_handle == advertising_handle ) { 8605 return item; 8606 } 8607 } 8608 return NULL; 8609 } 8610 8611 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8612 hci_stack->le_resolvable_private_address_update_s = update_s; 8613 hci_run(); 8614 return ERROR_CODE_SUCCESS; 8615 } 8616 8617 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8618 // find free advertisement handle 8619 uint8_t advertisement_handle; 8620 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8621 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8622 } 8623 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8624 // clear 8625 memset(storage, 0, sizeof(le_advertising_set_t)); 8626 // copy params 8627 storage->advertising_handle = advertisement_handle; 8628 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8629 // add to list 8630 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8631 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8632 *out_advertising_handle = advertisement_handle; 8633 // set tasks and start 8634 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8635 hci_run(); 8636 return ERROR_CODE_SUCCESS; 8637 } 8638 8639 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8640 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8641 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8642 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8643 // set tasks and start 8644 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8645 hci_run(); 8646 return ERROR_CODE_SUCCESS; 8647 } 8648 8649 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8650 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8651 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8652 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8653 return ERROR_CODE_SUCCESS; 8654 } 8655 8656 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8657 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8658 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8659 memcpy(advertising_set->random_address, random_address, 6); 8660 // set tasks and start 8661 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8662 hci_run(); 8663 return ERROR_CODE_SUCCESS; 8664 } 8665 8666 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8667 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8668 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8669 advertising_set->adv_data = advertising_data; 8670 advertising_set->adv_data_len = advertising_data_length; 8671 // set tasks and start 8672 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8673 hci_run(); 8674 return ERROR_CODE_SUCCESS; 8675 } 8676 8677 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){ 8678 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8679 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8680 advertising_set->scan_data = scan_response_data; 8681 advertising_set->scan_data_len = scan_response_data_length; 8682 // set tasks and start 8683 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8684 hci_run(); 8685 return ERROR_CODE_SUCCESS; 8686 } 8687 8688 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8689 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8690 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8691 advertising_set->enable_timeout = timeout; 8692 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8693 // set tasks and start 8694 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8695 hci_run(); 8696 return ERROR_CODE_SUCCESS; 8697 } 8698 8699 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8700 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8701 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8702 // set tasks and start 8703 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8704 hci_run(); 8705 return ERROR_CODE_SUCCESS; 8706 } 8707 8708 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8709 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8710 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8711 // set tasks and start 8712 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8713 hci_run(); 8714 return ERROR_CODE_SUCCESS; 8715 } 8716 8717 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8718 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8719 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8720 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8721 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8722 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8723 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8724 // set tasks and start 8725 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8726 hci_run(); 8727 return ERROR_CODE_SUCCESS; 8728 } 8729 8730 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8731 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8732 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8733 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8734 return ERROR_CODE_SUCCESS; 8735 } 8736 8737 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8738 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8739 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8740 advertising_set->periodic_data = periodic_data; 8741 advertising_set->periodic_data_len = periodic_data_length; 8742 // set tasks and start 8743 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8744 hci_run(); 8745 return ERROR_CODE_SUCCESS; 8746 } 8747 8748 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8749 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8750 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8751 // set tasks and start 8752 advertising_set->periodic_include_adi = include_adi; 8753 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8754 hci_run(); 8755 return ERROR_CODE_SUCCESS; 8756 } 8757 8758 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8759 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8760 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8761 // set tasks and start 8762 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8763 hci_run(); 8764 return ERROR_CODE_SUCCESS; 8765 } 8766 8767 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8768 hci_stack->le_past_mode = mode; 8769 hci_stack->le_past_skip = skip; 8770 hci_stack->le_past_sync_timeout = sync_timeout; 8771 hci_stack->le_past_cte_type = cte_type; 8772 hci_stack->le_past_set_default_params = true; 8773 hci_run(); 8774 return ERROR_CODE_SUCCESS; 8775 } 8776 8777 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8778 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8779 if (hci_connection == NULL){ 8780 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8781 } 8782 hci_connection->le_past_sync_handle = sync_handle; 8783 hci_connection->le_past_service_data = service_data; 8784 hci_run(); 8785 return ERROR_CODE_SUCCESS; 8786 } 8787 8788 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8789 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8790 if (hci_connection == NULL){ 8791 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8792 } 8793 hci_connection->le_past_advertising_handle = advertising_handle; 8794 hci_connection->le_past_service_data = service_data; 8795 hci_run(); 8796 return ERROR_CODE_SUCCESS; 8797 } 8798 8799 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8800 8801 #endif 8802 8803 #endif 8804 8805 void hci_le_set_own_address_type(uint8_t own_address_type){ 8806 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8807 if (own_address_type == hci_stack->le_own_addr_type) return; 8808 hci_stack->le_own_addr_type = own_address_type; 8809 8810 #ifdef ENABLE_LE_PERIPHERAL 8811 // update advertisement parameters, too 8812 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8813 hci_run(); 8814 #endif 8815 #ifdef ENABLE_LE_CENTRAL 8816 // note: we don't update scan parameters or modify ongoing connection attempts 8817 #endif 8818 } 8819 8820 void hci_le_random_address_set(const bd_addr_t random_address){ 8821 memcpy(hci_stack->le_random_address, random_address, 6); 8822 hci_stack->le_random_address_set = true; 8823 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8824 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8825 if (hci_extended_advertising_supported()){ 8826 hci_assert_advertisement_set_0_ready(); 8827 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8828 } 8829 #endif 8830 hci_run(); 8831 } 8832 8833 #endif 8834 8835 uint8_t gap_disconnect(hci_con_handle_t handle){ 8836 hci_connection_t * conn = hci_connection_for_handle(handle); 8837 if (!conn){ 8838 hci_emit_disconnection_complete(handle, 0); 8839 return 0; 8840 } 8841 // ignore if already disconnected 8842 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8843 return 0; 8844 } 8845 conn->state = SEND_DISCONNECT; 8846 hci_run(); 8847 return 0; 8848 } 8849 8850 int gap_read_rssi(hci_con_handle_t con_handle){ 8851 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8852 if (hci_connection == NULL) return 0; 8853 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8854 hci_run(); 8855 return 1; 8856 } 8857 8858 /** 8859 * @brief Get connection type 8860 * @param con_handle 8861 * @result connection_type 8862 */ 8863 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8864 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8865 if (!conn) return GAP_CONNECTION_INVALID; 8866 switch (conn->address_type){ 8867 case BD_ADDR_TYPE_LE_PUBLIC: 8868 case BD_ADDR_TYPE_LE_RANDOM: 8869 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8870 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8871 return GAP_CONNECTION_LE; 8872 case BD_ADDR_TYPE_SCO: 8873 return GAP_CONNECTION_SCO; 8874 case BD_ADDR_TYPE_ACL: 8875 return GAP_CONNECTION_ACL; 8876 default: 8877 return GAP_CONNECTION_INVALID; 8878 } 8879 } 8880 8881 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8882 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8883 if (!conn) return HCI_ROLE_INVALID; 8884 return (hci_role_t) conn->role; 8885 } 8886 8887 8888 #ifdef ENABLE_CLASSIC 8889 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8890 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8891 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8892 conn->request_role = role; 8893 hci_run(); 8894 return ERROR_CODE_SUCCESS; 8895 } 8896 #endif 8897 8898 #ifdef ENABLE_BLE 8899 8900 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){ 8901 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8902 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8903 8904 conn->le_phy_update_all_phys = all_phys; 8905 conn->le_phy_update_tx_phys = tx_phys; 8906 conn->le_phy_update_rx_phys = rx_phys; 8907 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8908 8909 hci_run(); 8910 8911 return 0; 8912 } 8913 8914 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8915 8916 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 8917 // incorrect configuration: 8918 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 8919 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 8920 btstack_assert(false); 8921 #endif 8922 8923 // check if already in list 8924 btstack_linked_list_iterator_t it; 8925 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8926 while (btstack_linked_list_iterator_has_next(&it)) { 8927 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8928 if (entry->address_type != address_type) { 8929 continue; 8930 } 8931 if (memcmp(entry->address, address, 6) != 0) { 8932 continue; 8933 } 8934 8935 // if already on controller: 8936 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8937 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8938 // drop remove request 8939 entry->state = LE_WHITELIST_ON_CONTROLLER; 8940 return ERROR_CODE_SUCCESS; 8941 } else { 8942 // disallow as already on controller 8943 return ERROR_CODE_COMMAND_DISALLOWED; 8944 } 8945 } 8946 8947 // assume scheduled to add 8948 return ERROR_CODE_COMMAND_DISALLOWED; 8949 } 8950 8951 // alloc and add to list 8952 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8953 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8954 entry->address_type = address_type; 8955 (void)memcpy(entry->address, address, 6); 8956 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8957 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8958 return ERROR_CODE_SUCCESS; 8959 } 8960 8961 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8962 btstack_linked_list_iterator_t it; 8963 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8964 while (btstack_linked_list_iterator_has_next(&it)){ 8965 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8966 if (entry->address_type != address_type) { 8967 continue; 8968 } 8969 if (memcmp(entry->address, address, 6) != 0) { 8970 continue; 8971 } 8972 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8973 // remove from controller if already present 8974 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8975 } else { 8976 // directly remove entry from whitelist 8977 btstack_linked_list_iterator_remove(&it); 8978 btstack_memory_whitelist_entry_free(entry); 8979 } 8980 return ERROR_CODE_SUCCESS; 8981 } 8982 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8983 } 8984 8985 static void hci_whitelist_clear(void){ 8986 btstack_linked_list_iterator_t it; 8987 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8988 while (btstack_linked_list_iterator_has_next(&it)){ 8989 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8990 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8991 // remove from controller if already present 8992 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8993 continue; 8994 } 8995 // directly remove entry from whitelist 8996 btstack_linked_list_iterator_remove(&it); 8997 btstack_memory_whitelist_entry_free(entry); 8998 } 8999 } 9000 9001 /** 9002 * @brief Clear Whitelist 9003 * @return 0 if ok 9004 */ 9005 uint8_t gap_whitelist_clear(void){ 9006 hci_whitelist_clear(); 9007 hci_run(); 9008 return ERROR_CODE_SUCCESS; 9009 } 9010 9011 /** 9012 * @brief Add Device to Whitelist 9013 * @param address_typ 9014 * @param address 9015 * @return 0 if ok 9016 */ 9017 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9018 uint8_t status = hci_whitelist_add(address_type, address); 9019 if (status){ 9020 return status; 9021 } 9022 hci_run(); 9023 return ERROR_CODE_SUCCESS; 9024 } 9025 9026 /** 9027 * @brief Remove Device from Whitelist 9028 * @param address_typ 9029 * @param address 9030 * @return 0 if ok 9031 */ 9032 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9033 uint8_t status = hci_whitelist_remove(address_type, address); 9034 if (status){ 9035 return status; 9036 } 9037 hci_run(); 9038 return ERROR_CODE_SUCCESS; 9039 } 9040 9041 #ifdef ENABLE_LE_CENTRAL 9042 /** 9043 * @brief Connect with Whitelist 9044 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9045 * @return - if ok 9046 */ 9047 uint8_t gap_connect_with_whitelist(void){ 9048 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9049 return ERROR_CODE_COMMAND_DISALLOWED; 9050 } 9051 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9052 hci_run(); 9053 return ERROR_CODE_SUCCESS; 9054 } 9055 9056 /** 9057 * @brief Auto Connection Establishment - Start Connecting to device 9058 * @param address_typ 9059 * @param address 9060 * @return 0 if ok 9061 */ 9062 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9063 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9064 return ERROR_CODE_COMMAND_DISALLOWED; 9065 } 9066 9067 uint8_t status = hci_whitelist_add(address_type, address); 9068 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9069 return status; 9070 } 9071 9072 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9073 9074 hci_run(); 9075 return ERROR_CODE_SUCCESS; 9076 } 9077 9078 /** 9079 * @brief Auto Connection Establishment - Stop Connecting to device 9080 * @param address_typ 9081 * @param address 9082 * @return 0 if ok 9083 */ 9084 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9085 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9086 return ERROR_CODE_COMMAND_DISALLOWED; 9087 } 9088 9089 hci_whitelist_remove(address_type, address); 9090 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9091 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9092 } 9093 hci_run(); 9094 return 0; 9095 } 9096 9097 /** 9098 * @brief Auto Connection Establishment - Stop everything 9099 * @note Convenience function to stop all active auto connection attempts 9100 */ 9101 uint8_t gap_auto_connection_stop_all(void){ 9102 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9103 return ERROR_CODE_COMMAND_DISALLOWED; 9104 } 9105 hci_whitelist_clear(); 9106 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9107 hci_run(); 9108 return ERROR_CODE_SUCCESS; 9109 } 9110 9111 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9112 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9113 if (!conn) return 0; 9114 return conn->le_connection_interval; 9115 } 9116 #endif 9117 #endif 9118 9119 #ifdef ENABLE_CLASSIC 9120 /** 9121 * @brief Set Extended Inquiry Response data 9122 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9123 * @note has to be done before stack starts up 9124 */ 9125 void gap_set_extended_inquiry_response(const uint8_t * data){ 9126 hci_stack->eir_data = data; 9127 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9128 hci_run(); 9129 } 9130 9131 /** 9132 * @brief Start GAP Classic Inquiry 9133 * @param duration in 1.28s units 9134 * @return 0 if ok 9135 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9136 */ 9137 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9138 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9139 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9140 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9141 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9142 } 9143 hci_stack->inquiry_state = duration_in_1280ms_units; 9144 hci_stack->inquiry_max_period_length = 0; 9145 hci_stack->inquiry_min_period_length = 0; 9146 hci_run(); 9147 return 0; 9148 } 9149 9150 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9151 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9152 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9153 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9154 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9155 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9156 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9157 9158 hci_stack->inquiry_state = duration; 9159 hci_stack->inquiry_max_period_length = max_period_length; 9160 hci_stack->inquiry_min_period_length = min_period_length; 9161 hci_run(); 9162 return 0; 9163 } 9164 9165 /** 9166 * @brief Stop GAP Classic Inquiry 9167 * @return 0 if ok 9168 */ 9169 int gap_inquiry_stop(void){ 9170 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9171 // emit inquiry complete event, before it even started 9172 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9173 hci_emit_event(event, sizeof(event), 1); 9174 return 0; 9175 } 9176 switch (hci_stack->inquiry_state){ 9177 case GAP_INQUIRY_STATE_ACTIVE: 9178 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9179 hci_run(); 9180 return ERROR_CODE_SUCCESS; 9181 case GAP_INQUIRY_STATE_PERIODIC: 9182 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9183 hci_run(); 9184 return ERROR_CODE_SUCCESS; 9185 default: 9186 return ERROR_CODE_COMMAND_DISALLOWED; 9187 } 9188 } 9189 9190 void gap_inquiry_set_lap(uint32_t lap){ 9191 hci_stack->inquiry_lap = lap; 9192 } 9193 9194 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9195 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9196 hci_stack->inquiry_scan_window = inquiry_scan_window; 9197 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9198 hci_run(); 9199 } 9200 9201 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9202 { 9203 hci_stack->inquiry_tx_power_level = tx_power; 9204 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9205 hci_run(); 9206 } 9207 9208 9209 /** 9210 * @brief Remote Name Request 9211 * @param addr 9212 * @param page_scan_repetition_mode 9213 * @param clock_offset only used when bit 15 is set 9214 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9215 */ 9216 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9217 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9218 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9219 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9220 hci_stack->remote_name_clock_offset = clock_offset; 9221 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9222 hci_run(); 9223 return 0; 9224 } 9225 9226 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9227 hci_stack->gap_pairing_state = state; 9228 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9229 hci_run(); 9230 return 0; 9231 } 9232 9233 /** 9234 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9235 * @param addr 9236 * @param pin_data 9237 * @param pin_len 9238 * @return 0 if ok 9239 */ 9240 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9241 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9242 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9243 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9244 hci_stack->gap_pairing_pin_len = pin_len; 9245 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9246 } 9247 9248 /** 9249 * @brief Legacy Pairing Pin Code Response 9250 * @param addr 9251 * @param pin 9252 * @return 0 if ok 9253 */ 9254 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9255 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9256 } 9257 9258 /** 9259 * @brief Abort Legacy Pairing 9260 * @param addr 9261 * @param pin 9262 * @return 0 if ok 9263 */ 9264 int gap_pin_code_negative(bd_addr_t addr){ 9265 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9266 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9267 } 9268 9269 /** 9270 * @brief SSP Passkey Response 9271 * @param addr 9272 * @param passkey 9273 * @return 0 if ok 9274 */ 9275 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9276 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9277 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9278 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9279 } 9280 9281 /** 9282 * @brief Abort SSP Passkey Entry/Pairing 9283 * @param addr 9284 * @param pin 9285 * @return 0 if ok 9286 */ 9287 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9288 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9289 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9290 } 9291 9292 /** 9293 * @brief Accept SSP Numeric Comparison 9294 * @param addr 9295 * @param passkey 9296 * @return 0 if ok 9297 */ 9298 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9299 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9300 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9301 } 9302 9303 /** 9304 * @brief Abort SSP Numeric Comparison/Pairing 9305 * @param addr 9306 * @param pin 9307 * @return 0 if ok 9308 */ 9309 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9310 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9311 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9312 } 9313 9314 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9315 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9316 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9317 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9318 connectionSetAuthenticationFlags(conn, flag); 9319 hci_run(); 9320 return ERROR_CODE_SUCCESS; 9321 } 9322 #endif 9323 9324 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9325 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9326 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9327 } 9328 9329 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9330 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9331 } 9332 #endif 9333 9334 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9335 /** 9336 * @brief Report Remote OOB Data 9337 * @param bd_addr 9338 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9339 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9340 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9341 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9342 */ 9343 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){ 9344 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9345 if (connection == NULL) { 9346 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9347 } 9348 connection->classic_oob_c_192 = c_192; 9349 connection->classic_oob_r_192 = r_192; 9350 9351 // ignore P-256 if not supported by us 9352 if (hci_stack->secure_connections_active){ 9353 connection->classic_oob_c_256 = c_256; 9354 connection->classic_oob_r_256 = r_256; 9355 } 9356 9357 return ERROR_CODE_SUCCESS; 9358 } 9359 /** 9360 * @brief Generate new OOB data 9361 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9362 */ 9363 void gap_ssp_generate_oob_data(void){ 9364 hci_stack->classic_read_local_oob_data = true; 9365 hci_run(); 9366 } 9367 9368 #endif 9369 9370 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9371 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9372 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9373 if (connection == NULL) { 9374 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9375 } 9376 9377 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9378 connection->link_key_type = type; 9379 9380 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9381 } 9382 9383 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9384 /** 9385 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9386 * @param inquiry_mode see bluetooth_defines.h 9387 */ 9388 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9389 hci_stack->inquiry_mode = inquiry_mode; 9390 } 9391 9392 /** 9393 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9394 */ 9395 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9396 hci_stack->sco_voice_setting = voice_setting; 9397 } 9398 9399 /** 9400 * @brief Get SCO Voice Setting 9401 * @return current voice setting 9402 */ 9403 uint16_t hci_get_sco_voice_setting(void){ 9404 return hci_stack->sco_voice_setting; 9405 } 9406 9407 static int hci_have_usb_transport(void){ 9408 if (!hci_stack->hci_transport) return 0; 9409 const char * transport_name = hci_stack->hci_transport->name; 9410 if (!transport_name) return 0; 9411 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9412 } 9413 9414 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9415 uint16_t sco_packet_length = 0; 9416 9417 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9418 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9419 int multiplier; 9420 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9421 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9422 multiplier = 2; 9423 } else { 9424 multiplier = 1; 9425 } 9426 #endif 9427 9428 #ifdef ENABLE_SCO_OVER_HCI 9429 if (hci_have_usb_transport()){ 9430 // see Core Spec for H2 USB Transfer. 9431 // 3 byte SCO header + 24 bytes per connection 9432 // @note multiple sco connections not supported currently 9433 sco_packet_length = 3 + 24 * multiplier; 9434 } else { 9435 // 3 byte SCO header + SCO packet length over the air 9436 sco_packet_length = 3 + payload_size * multiplier; 9437 // assert that it still fits inside an SCO buffer 9438 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9439 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9440 } 9441 } 9442 #endif 9443 #ifdef HAVE_SCO_TRANSPORT 9444 // 3 byte SCO header + SCO packet length over the air 9445 sco_packet_length = 3 + payload_size * multiplier; 9446 // assert that it still fits inside an SCO buffer 9447 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9448 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9449 } 9450 #endif 9451 return sco_packet_length; 9452 } 9453 9454 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9455 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9456 if (connection != NULL){ 9457 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9458 } 9459 return 0; 9460 } 9461 9462 uint16_t hci_get_sco_packet_length(void){ 9463 btstack_linked_list_iterator_t it; 9464 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9465 while (btstack_linked_list_iterator_has_next(&it)){ 9466 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9467 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9468 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9469 } 9470 } 9471 return 0; 9472 } 9473 9474 /** 9475 * @brief Sets the master/slave policy 9476 * @param policy (0: attempt to become master, 1: let connecting device decide) 9477 */ 9478 void hci_set_master_slave_policy(uint8_t policy){ 9479 hci_stack->master_slave_policy = policy; 9480 } 9481 9482 #endif 9483 9484 HCI_STATE hci_get_state(void){ 9485 return hci_stack->state; 9486 } 9487 9488 #ifdef ENABLE_CLASSIC 9489 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9490 hci_stack->gap_classic_accept_callback = accept_callback; 9491 } 9492 #endif 9493 9494 /** 9495 * @brief Set callback for Bluetooth Hardware Error 9496 */ 9497 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9498 hci_stack->hardware_error_callback = fn; 9499 } 9500 9501 void hci_disconnect_all(void){ 9502 btstack_linked_list_iterator_t it; 9503 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9504 while (btstack_linked_list_iterator_has_next(&it)){ 9505 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9506 if (con->state == SENT_DISCONNECT) continue; 9507 con->state = SEND_DISCONNECT; 9508 } 9509 hci_run(); 9510 } 9511 9512 uint16_t hci_get_manufacturer(void){ 9513 return hci_stack->manufacturer; 9514 } 9515 9516 #ifdef ENABLE_BLE 9517 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9518 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9519 if (!hci_con) return NULL; 9520 return &hci_con->sm_connection; 9521 } 9522 9523 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9524 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9525 #endif 9526 9527 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9528 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9529 if (hci_connection == NULL) return 0; 9530 if (hci_is_le_connection(hci_connection)){ 9531 #ifdef ENABLE_BLE 9532 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9533 if (sm_conn->sm_connection_encrypted != 0u) { 9534 return sm_conn->sm_actual_encryption_key_size; 9535 } 9536 #endif 9537 } else { 9538 #ifdef ENABLE_CLASSIC 9539 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9540 return hci_connection->encryption_key_size; 9541 } 9542 #endif 9543 } 9544 return 0; 9545 } 9546 9547 bool gap_authenticated(hci_con_handle_t con_handle){ 9548 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9549 if (hci_connection == NULL) return false; 9550 9551 switch (hci_connection->address_type){ 9552 #ifdef ENABLE_BLE 9553 case BD_ADDR_TYPE_LE_PUBLIC: 9554 case BD_ADDR_TYPE_LE_RANDOM: 9555 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9556 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9557 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9558 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9559 #endif 9560 #ifdef ENABLE_CLASSIC 9561 case BD_ADDR_TYPE_SCO: 9562 case BD_ADDR_TYPE_ACL: 9563 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9564 #endif 9565 default: 9566 return false; 9567 } 9568 } 9569 9570 bool gap_secure_connection(hci_con_handle_t con_handle){ 9571 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9572 if (hci_connection == NULL) return 0; 9573 9574 switch (hci_connection->address_type){ 9575 #ifdef ENABLE_BLE 9576 case BD_ADDR_TYPE_LE_PUBLIC: 9577 case BD_ADDR_TYPE_LE_RANDOM: 9578 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9579 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9580 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9581 return hci_connection->sm_connection.sm_connection_sc; 9582 #endif 9583 #ifdef ENABLE_CLASSIC 9584 case BD_ADDR_TYPE_SCO: 9585 case BD_ADDR_TYPE_ACL: 9586 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9587 #endif 9588 default: 9589 return false; 9590 } 9591 } 9592 9593 bool gap_bonded(hci_con_handle_t con_handle){ 9594 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9595 if (hci_connection == NULL) return 0; 9596 9597 #ifdef ENABLE_CLASSIC 9598 link_key_t link_key; 9599 link_key_type_t link_key_type; 9600 #endif 9601 switch (hci_connection->address_type){ 9602 #ifdef ENABLE_BLE 9603 case BD_ADDR_TYPE_LE_PUBLIC: 9604 case BD_ADDR_TYPE_LE_RANDOM: 9605 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9606 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9607 return hci_connection->sm_connection.sm_le_db_index >= 0; 9608 #endif 9609 #ifdef ENABLE_CLASSIC 9610 case BD_ADDR_TYPE_SCO: 9611 case BD_ADDR_TYPE_ACL: 9612 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9613 #endif 9614 default: 9615 return false; 9616 } 9617 } 9618 9619 #ifdef ENABLE_BLE 9620 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9621 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9622 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9623 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9624 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9625 return sm_conn->sm_connection_authorization_state; 9626 } 9627 #endif 9628 9629 #ifdef ENABLE_CLASSIC 9630 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){ 9631 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9632 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9633 conn->sniff_min_interval = sniff_min_interval; 9634 conn->sniff_max_interval = sniff_max_interval; 9635 conn->sniff_attempt = sniff_attempt; 9636 conn->sniff_timeout = sniff_timeout; 9637 hci_run(); 9638 return 0; 9639 } 9640 9641 /** 9642 * @brief Exit Sniff mode 9643 * @param con_handle 9644 @ @return 0 if ok 9645 */ 9646 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9647 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9648 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9649 conn->sniff_min_interval = 0xffff; 9650 hci_run(); 9651 return 0; 9652 } 9653 9654 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){ 9655 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9656 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9657 conn->sniff_subrating_max_latency = max_latency; 9658 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9659 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9660 hci_run(); 9661 return ERROR_CODE_SUCCESS; 9662 } 9663 9664 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){ 9665 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9666 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9667 conn->qos_service_type = service_type; 9668 conn->qos_token_rate = token_rate; 9669 conn->qos_peak_bandwidth = peak_bandwidth; 9670 conn->qos_latency = latency; 9671 conn->qos_delay_variation = delay_variation; 9672 hci_run(); 9673 return ERROR_CODE_SUCCESS; 9674 } 9675 9676 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9677 hci_stack->new_page_scan_interval = page_scan_interval; 9678 hci_stack->new_page_scan_window = page_scan_window; 9679 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9680 hci_run(); 9681 } 9682 9683 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9684 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9685 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9686 hci_run(); 9687 } 9688 9689 void gap_set_page_timeout(uint16_t page_timeout){ 9690 hci_stack->page_timeout = page_timeout; 9691 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9692 hci_run(); 9693 } 9694 9695 #endif 9696 9697 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9698 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9699 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9700 if (le_device_db_index >= le_device_db_max_count()) return; 9701 uint8_t offset = le_device_db_index >> 3; 9702 uint8_t mask = 1 << (le_device_db_index & 7); 9703 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9704 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9705 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9706 // note: go back to remove entries, otherwise, a remove + add will skip the add 9707 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9708 } 9709 } 9710 9711 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9712 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9713 if (le_device_db_index >= le_device_db_max_count()) return; 9714 uint8_t offset = le_device_db_index >> 3; 9715 uint8_t mask = 1 << (le_device_db_index & 7); 9716 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9717 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9718 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9719 } 9720 } 9721 9722 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9723 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9724 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9725 } 9726 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9727 // restart le resolving list update 9728 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9729 } 9730 return ERROR_CODE_SUCCESS; 9731 } 9732 9733 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9734 hci_stack->le_privacy_mode = privacy_mode; 9735 } 9736 #endif 9737 9738 #ifdef ENABLE_BLE 9739 #ifdef ENABLE_LE_CENTRAL 9740 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9741 9742 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9743 9744 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9745 // incorrect configuration: 9746 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9747 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9748 btstack_assert(false); 9749 #endif 9750 9751 // check if already in list 9752 btstack_linked_list_iterator_t it; 9753 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9754 while (btstack_linked_list_iterator_has_next(&it)) { 9755 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9756 if (entry->sid != advertising_sid) { 9757 continue; 9758 } 9759 if (entry->address_type != address_type) { 9760 continue; 9761 } 9762 if (memcmp(entry->address, address, 6) != 0) { 9763 continue; 9764 } 9765 // disallow if already scheduled to add 9766 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9767 return ERROR_CODE_COMMAND_DISALLOWED; 9768 } 9769 // still on controller, but scheduled to remove -> re-add 9770 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9771 return ERROR_CODE_SUCCESS; 9772 } 9773 // alloc and add to list 9774 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9775 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9776 entry->sid = advertising_sid; 9777 entry->address_type = address_type; 9778 (void)memcpy(entry->address, address, 6); 9779 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9780 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9781 return ERROR_CODE_SUCCESS; 9782 } 9783 9784 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9785 btstack_linked_list_iterator_t it; 9786 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9787 while (btstack_linked_list_iterator_has_next(&it)){ 9788 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9789 if (entry->sid != advertising_sid) { 9790 continue; 9791 } 9792 if (entry->address_type != address_type) { 9793 continue; 9794 } 9795 if (memcmp(entry->address, address, 6) != 0) { 9796 continue; 9797 } 9798 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9799 // remove from controller if already present 9800 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9801 } else { 9802 // directly remove entry from whitelist 9803 btstack_linked_list_iterator_remove(&it); 9804 btstack_memory_periodic_advertiser_list_entry_free(entry); 9805 } 9806 return ERROR_CODE_SUCCESS; 9807 } 9808 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9809 } 9810 9811 static void hci_periodic_advertiser_list_clear(void){ 9812 btstack_linked_list_iterator_t it; 9813 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9814 while (btstack_linked_list_iterator_has_next(&it)){ 9815 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9816 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9817 // remove from controller if already present 9818 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9819 continue; 9820 } 9821 // directly remove entry from whitelist 9822 btstack_linked_list_iterator_remove(&it); 9823 btstack_memory_periodic_advertiser_list_entry_free(entry); 9824 } 9825 } 9826 9827 uint8_t gap_periodic_advertiser_list_clear(void){ 9828 hci_periodic_advertiser_list_clear(); 9829 hci_run(); 9830 return ERROR_CODE_SUCCESS; 9831 } 9832 9833 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9834 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9835 if (status){ 9836 return status; 9837 } 9838 hci_run(); 9839 return ERROR_CODE_SUCCESS; 9840 } 9841 9842 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9843 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9844 if (status){ 9845 return status; 9846 } 9847 hci_run(); 9848 return ERROR_CODE_SUCCESS; 9849 } 9850 9851 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9852 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9853 // abort if already active 9854 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9855 return ERROR_CODE_COMMAND_DISALLOWED; 9856 } 9857 // store request 9858 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9859 hci_stack->le_periodic_sync_options = options; 9860 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9861 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9862 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9863 hci_stack->le_periodic_sync_skip = skip; 9864 hci_stack->le_periodic_sync_timeout = sync_timeout; 9865 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9866 9867 hci_run(); 9868 return ERROR_CODE_SUCCESS; 9869 } 9870 9871 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9872 // abort if not requested 9873 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9874 return ERROR_CODE_COMMAND_DISALLOWED; 9875 } 9876 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9877 hci_run(); 9878 return ERROR_CODE_SUCCESS; 9879 } 9880 9881 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9882 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9883 return ERROR_CODE_COMMAND_DISALLOWED; 9884 } 9885 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9886 hci_run(); 9887 return ERROR_CODE_SUCCESS; 9888 } 9889 9890 #endif 9891 #endif 9892 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9893 static hci_iso_stream_t * 9894 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9895 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9896 if (iso_stream != NULL){ 9897 iso_stream->iso_type = iso_type; 9898 iso_stream->state = state; 9899 iso_stream->group_id = group_id; 9900 iso_stream->stream_id = stream_id; 9901 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9902 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9903 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9904 } 9905 return iso_stream; 9906 } 9907 9908 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9909 btstack_linked_list_iterator_t it; 9910 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9911 while (btstack_linked_list_iterator_has_next(&it)){ 9912 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9913 if (iso_stream->cis_handle == con_handle ) { 9914 return iso_stream; 9915 } 9916 } 9917 return NULL; 9918 } 9919 9920 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9921 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9922 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9923 btstack_memory_hci_iso_stream_free(iso_stream); 9924 } 9925 9926 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9927 btstack_linked_list_iterator_t it; 9928 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9929 while (btstack_linked_list_iterator_has_next(&it)){ 9930 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9931 if ((iso_stream->group_id == group_id) && 9932 (iso_stream->iso_type == iso_type)){ 9933 btstack_linked_list_iterator_remove(&it); 9934 btstack_memory_hci_iso_stream_free(iso_stream); 9935 } 9936 } 9937 } 9938 9939 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9940 btstack_linked_list_iterator_t it; 9941 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9942 while (btstack_linked_list_iterator_has_next(&it)){ 9943 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9944 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9945 (iso_stream->group_id == group_id)){ 9946 btstack_linked_list_iterator_remove(&it); 9947 btstack_memory_hci_iso_stream_free(iso_stream); 9948 } 9949 } 9950 } 9951 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9952 btstack_linked_list_iterator_t it; 9953 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9954 while (btstack_linked_list_iterator_has_next(&it)){ 9955 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9956 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9957 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9958 } 9959 } 9960 } 9961 9962 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9963 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9964 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9965 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9966 return (sdu_len_offset + 2 + sdu_len) == size; 9967 } 9968 9969 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 9970 if (iso_stream == NULL){ 9971 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 9972 return; 9973 } 9974 9975 if (hci_stack->iso_packet_handler == NULL) { 9976 return; 9977 } 9978 9979 // parse header 9980 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 9981 uint16_t data_total_length = little_endian_read_16(packet, 2); 9982 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 9983 9984 // assert packet is complete 9985 if ((data_total_length + 4u) != size){ 9986 return; 9987 } 9988 9989 if ((pb_flag & 0x01) == 0){ 9990 if (pb_flag == 0x02){ 9991 // The ISO_SDU_Fragment field contains a header and a complete SDU. 9992 if (hci_iso_sdu_complete(packet, size)) { 9993 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9994 } 9995 } else { 9996 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9997 if (size > sizeof(iso_stream->reassembly_buffer)){ 9998 return; 9999 } 10000 memcpy(iso_stream->reassembly_buffer, packet, size); 10001 // fix pb_flag 10002 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10003 iso_stream->reassembly_pos = size; 10004 } 10005 } else { 10006 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10007 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10008 if (ts_flag != 0){ 10009 return; 10010 } 10011 // append fragment 10012 if (iso_stream->reassembly_pos == 0){ 10013 return; 10014 } 10015 10016 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10017 // reset reassembly buffer 10018 iso_stream->reassembly_pos = 0; 10019 return; 10020 } 10021 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10022 iso_stream->reassembly_pos += data_total_length; 10023 10024 // deliver if last fragment and SDU complete 10025 if (pb_flag == 0x03){ 10026 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10027 // fix data_total_length 10028 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10029 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10030 } 10031 // reset reassembly buffer 10032 iso_stream->reassembly_pos = 0; 10033 } 10034 } 10035 } 10036 10037 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10038 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10039 uint16_t pos = 0; 10040 event[pos++] = HCI_EVENT_META_GAP; 10041 event[pos++] = 4 + (2 * big->num_bis); 10042 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10043 event[pos++] = status; 10044 event[pos++] = big->big_handle; 10045 event[pos++] = big->num_bis; 10046 uint8_t i; 10047 for (i=0;i<big->num_bis;i++){ 10048 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10049 pos += 2; 10050 } 10051 hci_emit_event(event, pos, 0); 10052 } 10053 10054 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10055 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10056 uint16_t pos = 0; 10057 event[pos++] = HCI_EVENT_META_GAP; 10058 event[pos++] = 4 + (2 * cig->num_cis); 10059 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10060 event[pos++] = status; 10061 event[pos++] = cig->cig_id; 10062 event[pos++] = cig->num_cis; 10063 uint8_t i; 10064 for (i=0;i<cig->num_cis;i++){ 10065 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10066 pos += 2; 10067 } 10068 hci_emit_event(event, pos, 0); 10069 } 10070 10071 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10072 uint16_t pos = 0; 10073 event[pos++] = HCI_EVENT_META_GAP; 10074 event[pos++] = 8; 10075 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10076 event[pos++] = status; 10077 event[pos++] = iso_stream->group_id; 10078 event[pos++] = iso_stream->stream_id; 10079 little_endian_store_16(event, pos, iso_stream->cis_handle); 10080 pos += 2; 10081 little_endian_store_16(event, pos, iso_stream->acl_handle); 10082 pos += 2; 10083 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10084 pos += 2; 10085 event[pos++] = iso_stream->number_of_subevents; 10086 event[pos++] = iso_stream->burst_number_c_to_p; 10087 event[pos++] = iso_stream->burst_number_p_to_c; 10088 event[pos++] = iso_stream->flush_timeout_c_to_p; 10089 event[pos++] = iso_stream->flush_timeout_p_to_c; 10090 return pos; 10091 } 10092 10093 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10094 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10095 // cache data before finalizing struct 10096 uint8_t event [17]; 10097 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10098 btstack_assert(pos <= sizeof(event)); 10099 if (status != ERROR_CODE_SUCCESS){ 10100 hci_iso_stream_finalize(iso_stream); 10101 } 10102 hci_emit_event(event, pos, 0); 10103 } 10104 10105 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10106 uint8_t event [4]; 10107 uint16_t pos = 0; 10108 event[pos++] = HCI_EVENT_META_GAP; 10109 event[pos++] = 2; 10110 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10111 event[pos++] = big->big_handle; 10112 hci_emit_event(event, pos, 0); 10113 } 10114 10115 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10116 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10117 uint16_t pos = 0; 10118 event[pos++] = HCI_EVENT_META_GAP; 10119 event[pos++] = 4; 10120 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10121 event[pos++] = status; 10122 event[pos++] = big_sync->big_handle; 10123 event[pos++] = big_sync->num_bis; 10124 uint8_t i; 10125 for (i=0;i<big_sync->num_bis;i++){ 10126 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10127 pos += 2; 10128 } 10129 hci_emit_event(event, pos, 0); 10130 } 10131 10132 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10133 uint8_t event [4]; 10134 uint16_t pos = 0; 10135 event[pos++] = HCI_EVENT_META_GAP; 10136 event[pos++] = 2; 10137 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10138 event[pos++] = big_handle; 10139 hci_emit_event(event, pos, 0); 10140 } 10141 10142 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10143 uint8_t event[6]; 10144 uint16_t pos = 0; 10145 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10146 event[pos++] = sizeof(event) - 2; 10147 event[pos++] = big->big_handle; 10148 event[pos++] = bis_index; 10149 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10150 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10151 } 10152 10153 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10154 uint8_t event[4]; 10155 uint16_t pos = 0; 10156 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10157 event[pos++] = sizeof(event) - 2; 10158 little_endian_store_16(event, pos, cis_con_handle); 10159 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10160 } 10161 10162 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10163 btstack_linked_list_iterator_t it; 10164 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10165 while (btstack_linked_list_iterator_has_next(&it)){ 10166 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10167 if ( big->big_handle == big_handle ) { 10168 return big; 10169 } 10170 } 10171 return NULL; 10172 } 10173 10174 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10175 btstack_linked_list_iterator_t it; 10176 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10177 while (btstack_linked_list_iterator_has_next(&it)){ 10178 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10179 if ( big_sync->big_handle == big_handle ) { 10180 return big_sync; 10181 } 10182 } 10183 return NULL; 10184 } 10185 10186 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10187 hci_stack->iso_packets_to_queue = num_packets; 10188 } 10189 10190 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10191 btstack_linked_list_iterator_t it; 10192 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10193 while (btstack_linked_list_iterator_has_next(&it)){ 10194 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10195 if ( cig->cig_id == cig_id ) { 10196 return cig; 10197 } 10198 } 10199 return NULL; 10200 } 10201 10202 static void hci_iso_notify_can_send_now(void){ 10203 10204 // BIG 10205 10206 btstack_linked_list_iterator_t it; 10207 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10208 while (btstack_linked_list_iterator_has_next(&it)){ 10209 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10210 // track number completed packet timestamps 10211 if (big->num_completed_timestamp_current_valid){ 10212 big->num_completed_timestamp_current_valid = false; 10213 if (big->num_completed_timestamp_previous_valid){ 10214 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10215 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10216 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10217 big->num_completed_timestamp_previous_ms); 10218 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10219 // to catch up, skip packet on all BIS 10220 uint8_t i; 10221 for (i=0;i<big->num_bis;i++){ 10222 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10223 if (iso_stream){ 10224 iso_stream->num_packets_to_skip++; 10225 } 10226 } 10227 } 10228 } 10229 big->num_completed_timestamp_previous_valid = true; 10230 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10231 } 10232 10233 if (big->can_send_now_requested){ 10234 // check if no outgoing iso packets pending and no can send now have to be emitted 10235 uint8_t i; 10236 bool can_send = true; 10237 uint8_t num_iso_queued_minimum = 0; 10238 for (i=0;i<big->num_bis;i++){ 10239 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10240 if (iso_stream == NULL) continue; 10241 // handle case where individual ISO packet was sent too late: 10242 // for each additionally queued packet, a new one needs to get skipped 10243 if (i==0){ 10244 num_iso_queued_minimum = iso_stream->num_packets_sent; 10245 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10246 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10247 iso_stream->num_packets_to_skip += num_packets_to_skip; 10248 iso_stream->num_packets_sent -= num_packets_to_skip; 10249 } 10250 // check if we can send now 10251 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10252 can_send = false; 10253 break; 10254 } 10255 } 10256 if (can_send){ 10257 // propagate can send now to individual streams 10258 big->can_send_now_requested = false; 10259 for (i=0;i<big->num_bis;i++){ 10260 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10261 iso_stream->emit_ready_to_send = true; 10262 } 10263 } 10264 } 10265 } 10266 10267 if (hci_stack->hci_packet_buffer_reserved) return; 10268 10269 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10270 while (btstack_linked_list_iterator_has_next(&it)){ 10271 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10272 // report bis ready 10273 uint8_t i; 10274 for (i=0;i<big->num_bis;i++){ 10275 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10276 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10277 iso_stream->emit_ready_to_send = false; 10278 hci_emit_bis_can_send_now(big, i); 10279 break; 10280 } 10281 } 10282 } 10283 10284 // CIS 10285 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10286 while (btstack_linked_list_iterator_has_next(&it)) { 10287 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10288 if ((iso_stream->can_send_now_requested) && 10289 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10290 iso_stream->can_send_now_requested = false; 10291 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10292 } 10293 } 10294 } 10295 10296 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10297 // make big handle unique and usuable for big and big sync 10298 if (hci_big_for_handle(big_handle) != NULL){ 10299 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10300 } 10301 if (hci_big_sync_for_handle(big_handle) != NULL){ 10302 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10303 } 10304 if (num_bis == 0){ 10305 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10306 } 10307 if (num_bis > MAX_NR_BIS){ 10308 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10309 } 10310 10311 // reserve ISO Streams 10312 uint8_t i; 10313 uint8_t status = ERROR_CODE_SUCCESS; 10314 for (i=0;i<num_bis;i++){ 10315 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10316 if (iso_stream == NULL) { 10317 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10318 break; 10319 } 10320 } 10321 10322 // free structs on error 10323 if (status != ERROR_CODE_SUCCESS){ 10324 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10325 } 10326 10327 return status; 10328 } 10329 10330 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10331 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10332 if (status != ERROR_CODE_SUCCESS){ 10333 return status; 10334 } 10335 10336 le_audio_big_t * big = storage; 10337 big->big_handle = big_params->big_handle; 10338 big->params = big_params; 10339 big->state = LE_AUDIO_BIG_STATE_CREATE; 10340 big->num_bis = big_params->num_bis; 10341 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10342 10343 hci_run(); 10344 10345 return ERROR_CODE_SUCCESS; 10346 } 10347 10348 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10349 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10350 if (status != ERROR_CODE_SUCCESS){ 10351 return status; 10352 } 10353 10354 le_audio_big_sync_t * big_sync = storage; 10355 big_sync->big_handle = big_sync_params->big_handle; 10356 big_sync->params = big_sync_params; 10357 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10358 big_sync->num_bis = big_sync_params->num_bis; 10359 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10360 10361 hci_run(); 10362 10363 return ERROR_CODE_SUCCESS; 10364 } 10365 10366 uint8_t gap_big_terminate(uint8_t big_handle){ 10367 le_audio_big_t * big = hci_big_for_handle(big_handle); 10368 if (big == NULL){ 10369 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10370 } 10371 switch (big->state){ 10372 case LE_AUDIO_BIG_STATE_CREATE: 10373 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10374 hci_emit_big_terminated(big); 10375 break; 10376 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10377 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10378 break; 10379 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10380 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10381 case LE_AUDIO_BIG_STATE_ACTIVE: 10382 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10383 hci_run(); 10384 break; 10385 default: 10386 return ERROR_CODE_COMMAND_DISALLOWED; 10387 } 10388 return ERROR_CODE_SUCCESS; 10389 } 10390 10391 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10392 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10393 if (big_sync == NULL){ 10394 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10395 } 10396 switch (big_sync->state){ 10397 case LE_AUDIO_BIG_STATE_CREATE: 10398 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10399 hci_emit_big_sync_stopped(big_handle); 10400 break; 10401 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10402 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10403 break; 10404 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10405 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10406 case LE_AUDIO_BIG_STATE_ACTIVE: 10407 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10408 hci_run(); 10409 break; 10410 default: 10411 return ERROR_CODE_COMMAND_DISALLOWED; 10412 } 10413 return ERROR_CODE_SUCCESS; 10414 } 10415 10416 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10417 le_audio_big_t * big = hci_big_for_handle(big_handle); 10418 if (big == NULL){ 10419 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10420 } 10421 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10422 return ERROR_CODE_COMMAND_DISALLOWED; 10423 } 10424 big->can_send_now_requested = true; 10425 hci_iso_notify_can_send_now(); 10426 return ERROR_CODE_SUCCESS; 10427 } 10428 10429 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10430 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10431 if (iso_stream == NULL){ 10432 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10433 } 10434 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10435 return ERROR_CODE_COMMAND_DISALLOWED; 10436 } 10437 iso_stream->can_send_now_requested = true; 10438 hci_iso_notify_can_send_now(); 10439 return ERROR_CODE_SUCCESS; 10440 } 10441 10442 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10443 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10444 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10445 } 10446 if (cig_params->num_cis == 0){ 10447 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10448 } 10449 if (cig_params->num_cis > MAX_NR_CIS){ 10450 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10451 } 10452 10453 // reserve ISO Streams 10454 uint8_t i; 10455 uint8_t status = ERROR_CODE_SUCCESS; 10456 for (i=0;i<cig_params->num_cis;i++){ 10457 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10458 if (iso_stream == NULL) { 10459 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10460 break; 10461 } 10462 } 10463 10464 // free structs on error 10465 if (status != ERROR_CODE_SUCCESS){ 10466 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10467 return status; 10468 } 10469 10470 le_audio_cig_t * cig = storage; 10471 cig->cig_id = cig_params->cig_id; 10472 cig->num_cis = cig_params->num_cis; 10473 cig->params = cig_params; 10474 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10475 for (i=0;i<cig->num_cis;i++){ 10476 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10477 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10478 cig->cis_setup_active[i] = false; 10479 cig->cis_established[i] = false; 10480 } 10481 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10482 10483 hci_run(); 10484 10485 return ERROR_CODE_SUCCESS; 10486 } 10487 10488 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10489 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10490 if (cig == NULL){ 10491 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10492 } 10493 10494 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10495 return ERROR_CODE_COMMAND_DISALLOWED; 10496 } 10497 10498 // store ACL Connection Handles 10499 uint8_t i; 10500 for (i=0;i<cig->num_cis;i++){ 10501 // check that all con handles exist and store 10502 hci_con_handle_t cis_handle = cis_con_handles[i]; 10503 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10504 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10505 } 10506 uint8_t j; 10507 bool found = false; 10508 for (j=0;j<cig->num_cis;j++){ 10509 if (cig->cis_con_handles[j] == cis_handle){ 10510 cig->acl_con_handles[j] = acl_con_handles[j]; 10511 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10512 btstack_assert(iso_stream != NULL); 10513 iso_stream->acl_handle = acl_con_handles[j]; 10514 found = true; 10515 break; 10516 } 10517 } 10518 if (!found){ 10519 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10520 } 10521 } 10522 10523 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10524 hci_run(); 10525 10526 return ERROR_CODE_SUCCESS; 10527 } 10528 10529 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10530 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10531 if (iso_stream == NULL){ 10532 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10533 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10534 } 10535 10536 // set next state and continue 10537 iso_stream->state = state; 10538 hci_run(); 10539 return ERROR_CODE_SUCCESS; 10540 } 10541 10542 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10543 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10544 } 10545 10546 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10547 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10548 } 10549 10550 10551 #endif 10552 #endif /* ENABLE_BLE */ 10553 10554 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10555 void hci_setup_test_connections_fuzz(void){ 10556 hci_connection_t * conn; 10557 10558 // default address: 66:55:44:33:00:01 10559 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10560 10561 // setup Controller info 10562 hci_stack->num_cmd_packets = 255; 10563 hci_stack->acl_packets_total_num = 255; 10564 10565 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10566 addr[5] = 0x01; 10567 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10568 conn->con_handle = addr[5]; 10569 conn->state = RECEIVED_CONNECTION_REQUEST; 10570 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10571 10572 // setup incoming Classic SCO connection with con handle 0x0002 10573 addr[5] = 0x02; 10574 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10575 conn->con_handle = addr[5]; 10576 conn->state = RECEIVED_CONNECTION_REQUEST; 10577 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10578 10579 // setup ready Classic ACL connection with con handle 0x0003 10580 addr[5] = 0x03; 10581 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10582 conn->con_handle = addr[5]; 10583 conn->state = OPEN; 10584 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10585 10586 // setup ready Classic SCO connection with con handle 0x0004 10587 addr[5] = 0x04; 10588 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10589 conn->con_handle = addr[5]; 10590 conn->state = OPEN; 10591 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10592 10593 // setup ready LE ACL connection with con handle 0x005 and public address 10594 addr[5] = 0x05; 10595 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10596 conn->con_handle = addr[5]; 10597 conn->state = OPEN; 10598 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10599 conn->sm_connection.sm_connection_encrypted = 1; 10600 } 10601 10602 void hci_free_connections_fuzz(void){ 10603 btstack_linked_list_iterator_t it; 10604 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10605 while (btstack_linked_list_iterator_has_next(&it)){ 10606 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10607 btstack_linked_list_iterator_remove(&it); 10608 btstack_memory_hci_connection_free(con); 10609 } 10610 } 10611 void hci_simulate_working_fuzz(void){ 10612 hci_stack->le_scanning_param_update = false; 10613 hci_init_done(); 10614 hci_stack->num_cmd_packets = 255; 10615 } 10616 #endif 10617