1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static int hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static 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(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 } 308 309 /** 310 * create connection for given address 311 * 312 * @return connection OR NULL, if no memory left 313 */ 314 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 315 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 316 317 hci_connection_t * conn = btstack_memory_hci_connection_get(); 318 if (!conn) return NULL; 319 hci_connection_init(conn); 320 321 bd_addr_copy(conn->address, addr); 322 conn->address_type = addr_type; 323 conn->con_handle = HCI_CON_HANDLE_INVALID; 324 conn->role = HCI_ROLE_INVALID; 325 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 326 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 327 #endif 328 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 329 330 return conn; 331 } 332 333 334 /** 335 * get le connection parameter range 336 * 337 * @return le connection parameter range struct 338 */ 339 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 340 *range = hci_stack->le_connection_parameter_range; 341 } 342 343 /** 344 * set le connection parameter range 345 * 346 */ 347 348 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 349 hci_stack->le_connection_parameter_range = *range; 350 } 351 352 /** 353 * @brief Test if connection parameters are inside in existing rage 354 * @param conn_interval_min (unit: 1.25ms) 355 * @param conn_interval_max (unit: 1.25ms) 356 * @param conn_latency 357 * @param supervision_timeout (unit: 10ms) 358 * @return 1 if included 359 */ 360 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){ 361 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 362 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 363 364 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 365 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 366 367 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 368 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 369 370 return 1; 371 } 372 373 /** 374 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 375 * @note: default: 1 376 * @param max_peripheral_connections 377 */ 378 #ifdef ENABLE_LE_PERIPHERAL 379 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 380 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 381 } 382 #endif 383 384 /** 385 * get hci connections iterator 386 * 387 * @return hci connections iterator 388 */ 389 390 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 391 btstack_linked_list_iterator_init(it, &hci_stack->connections); 392 } 393 394 /** 395 * get connection for a given handle 396 * 397 * @return connection OR NULL, if not found 398 */ 399 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 400 btstack_linked_list_iterator_t it; 401 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 402 while (btstack_linked_list_iterator_has_next(&it)){ 403 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 404 if ( item->con_handle == con_handle ) { 405 return item; 406 } 407 } 408 return NULL; 409 } 410 411 /** 412 * get connection for given address 413 * 414 * @return connection OR NULL, if not found 415 */ 416 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 417 btstack_linked_list_iterator_t it; 418 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 419 while (btstack_linked_list_iterator_has_next(&it)){ 420 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 421 if (connection->address_type != addr_type) continue; 422 if (memcmp(addr, connection->address, 6) != 0) continue; 423 return connection; 424 } 425 return NULL; 426 } 427 428 #ifdef ENABLE_CLASSIC 429 430 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 431 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 432 } 433 434 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 435 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 436 } 437 438 #ifdef ENABLE_SCO_OVER_HCI 439 static int hci_number_sco_connections(void){ 440 int connections = 0; 441 btstack_linked_list_iterator_t it; 442 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 443 while (btstack_linked_list_iterator_has_next(&it)){ 444 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 445 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 446 connections++; 447 } 448 return connections; 449 } 450 #endif 451 452 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 453 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 454 #ifdef HAVE_EMBEDDED_TICK 455 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 456 // connections might be timed out 457 hci_emit_l2cap_check_timeout(connection); 458 } 459 #else 460 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 461 // connections might be timed out 462 hci_emit_l2cap_check_timeout(connection); 463 } 464 #endif 465 } 466 467 static void hci_connection_timestamp(hci_connection_t *connection){ 468 #ifdef HAVE_EMBEDDED_TICK 469 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 470 #else 471 connection->timestamp = btstack_run_loop_get_time_ms(); 472 #endif 473 } 474 475 /** 476 * add authentication flags and reset timer 477 * @note: assumes classic connection 478 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 479 */ 480 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 481 bd_addr_t addr; 482 reverse_bd_addr(bd_addr, addr); 483 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 484 if (conn) { 485 connectionSetAuthenticationFlags(conn, flags); 486 hci_connection_timestamp(conn); 487 } 488 } 489 490 static bool hci_pairing_active(hci_connection_t * hci_connection){ 491 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 492 } 493 494 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 495 if (hci_pairing_active(hci_connection)) return; 496 if (ssp){ 497 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 498 } else { 499 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 500 } 501 // if we are initiator, we have sent an HCI Authenticate Request 502 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 503 504 // if we are responder, use minimal service security level as required level 505 if (!initiator){ 506 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); 507 } 508 509 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 510 511 uint8_t event[12]; 512 event[0] = GAP_EVENT_PAIRING_STARTED; 513 event[1] = 10; 514 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 515 reverse_bd_addr(hci_connection->address, &event[4]); 516 event[10] = (uint8_t) ssp; 517 event[11] = (uint8_t) initiator; 518 hci_emit_event(event, sizeof(event), 1); 519 } 520 521 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 522 hci_connection->requested_security_level = LEVEL_0; 523 if (!hci_pairing_active(hci_connection)) return; 524 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 525 #ifdef ENABLE_CLASSIC_PAIRING_OOB 526 hci_connection->classic_oob_c_192 = NULL; 527 hci_connection->classic_oob_r_192 = NULL; 528 hci_connection->classic_oob_c_256 = NULL; 529 hci_connection->classic_oob_r_256 = NULL; 530 #endif 531 log_info("pairing complete, status %02x", status); 532 533 uint8_t event[11]; 534 event[0] = GAP_EVENT_PAIRING_COMPLETE; 535 event[1] = 9; 536 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 537 reverse_bd_addr(hci_connection->address, &event[4]); 538 event[10] = status; 539 hci_emit_event(event, sizeof(event), 1); 540 541 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 542 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 543 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 544 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 545 hci_connection->bonding_status = status; 546 } 547 } 548 549 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 550 hci_connection_t * conn = hci_connection_for_handle(handle); 551 if (!conn) return false; 552 return hci_pairing_active(conn); 553 } 554 555 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 556 if (!hci_stack->link_key_db) return; 557 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 558 hci_stack->link_key_db->delete_link_key(addr); 559 } 560 561 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 562 if (!hci_stack->link_key_db) return; 563 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 564 hci_stack->link_key_db->put_link_key(addr, link_key, type); 565 } 566 567 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 568 if (!hci_stack->link_key_db) return false; 569 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 570 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 571 return result; 572 } 573 574 void gap_delete_all_link_keys(void){ 575 bd_addr_t addr; 576 link_key_t link_key; 577 link_key_type_t type; 578 btstack_link_key_iterator_t it; 579 int ok = gap_link_key_iterator_init(&it); 580 if (!ok) { 581 log_error("could not initialize iterator"); 582 return; 583 } 584 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 585 gap_drop_link_key_for_bd_addr(addr); 586 } 587 gap_link_key_iterator_done(&it); 588 } 589 590 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 591 if (!hci_stack->link_key_db) return 0; 592 if (!hci_stack->link_key_db->iterator_init) return 0; 593 return hci_stack->link_key_db->iterator_init(it); 594 } 595 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){ 596 if (!hci_stack->link_key_db) return 0; 597 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 598 } 599 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 600 if (!hci_stack->link_key_db) return; 601 hci_stack->link_key_db->iterator_done(it); 602 } 603 #endif 604 605 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 606 switch (address_type){ 607 case BD_ADDR_TYPE_LE_PUBLIC: 608 case BD_ADDR_TYPE_LE_RANDOM: 609 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 610 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 611 return true; 612 default: 613 return false; 614 } 615 } 616 617 static int hci_is_le_connection(hci_connection_t * connection){ 618 return hci_is_le_connection_type(connection->address_type); 619 } 620 621 /** 622 * count connections 623 */ 624 static int nr_hci_connections(void){ 625 int count = 0; 626 btstack_linked_item_t *it; 627 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 628 count++; 629 } 630 return count; 631 } 632 633 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 634 635 unsigned int num_packets_sent_classic = 0; 636 unsigned int num_packets_sent_le = 0; 637 638 btstack_linked_item_t *it; 639 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 640 hci_connection_t * connection = (hci_connection_t *) it; 641 if (hci_is_le_connection(connection)){ 642 num_packets_sent_le += connection->num_packets_sent; 643 } 644 if (connection->address_type == BD_ADDR_TYPE_ACL){ 645 num_packets_sent_classic += connection->num_packets_sent; 646 } 647 } 648 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 649 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 650 int free_slots_le = 0; 651 652 if (free_slots_classic < 0){ 653 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); 654 return 0; 655 } 656 657 if (hci_stack->le_acl_packets_total_num){ 658 // if we have LE slots, they are used 659 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 660 if (free_slots_le < 0){ 661 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); 662 return 0; 663 } 664 } else { 665 // otherwise, classic slots are used for LE, too 666 free_slots_classic -= num_packets_sent_le; 667 if (free_slots_classic < 0){ 668 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); 669 return 0; 670 } 671 } 672 673 switch (address_type){ 674 case BD_ADDR_TYPE_UNKNOWN: 675 log_error("hci_number_free_acl_slots: unknown address type"); 676 return 0; 677 678 case BD_ADDR_TYPE_ACL: 679 return (uint16_t) free_slots_classic; 680 681 default: 682 if (hci_stack->le_acl_packets_total_num > 0){ 683 return (uint16_t) free_slots_le; 684 } 685 return (uint16_t) free_slots_classic; 686 } 687 } 688 689 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 690 // get connection type 691 hci_connection_t * connection = hci_connection_for_handle(con_handle); 692 if (!connection){ 693 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 694 return 0; 695 } 696 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 697 } 698 699 #ifdef ENABLE_CLASSIC 700 static int hci_number_free_sco_slots(void){ 701 unsigned int num_sco_packets_sent = 0; 702 btstack_linked_item_t *it; 703 if (hci_stack->synchronous_flow_control_enabled){ 704 // explicit flow control 705 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 706 hci_connection_t * connection = (hci_connection_t *) it; 707 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 708 num_sco_packets_sent += connection->num_packets_sent; 709 } 710 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 711 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 712 return 0; 713 } 714 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 715 } else { 716 // implicit flow control -- TODO 717 int num_ready = 0; 718 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 719 hci_connection_t * connection = (hci_connection_t *) it; 720 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 721 if (connection->sco_tx_ready == 0) continue; 722 num_ready++; 723 } 724 return num_ready; 725 } 726 } 727 #endif 728 729 // only used to send HCI Host Number Completed Packets 730 static int hci_can_send_comand_packet_transport(void){ 731 if (hci_stack->hci_packet_buffer_reserved) return 0; 732 733 // check for async hci transport implementations 734 if (hci_stack->hci_transport->can_send_packet_now){ 735 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 736 return 0; 737 } 738 } 739 return 1; 740 } 741 742 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 743 bool hci_can_send_command_packet_now(void){ 744 if (hci_can_send_comand_packet_transport() == 0) return false; 745 return hci_stack->num_cmd_packets > 0u; 746 } 747 748 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 749 // check for async hci transport implementations 750 if (!hci_stack->hci_transport->can_send_packet_now) return true; 751 return hci_stack->hci_transport->can_send_packet_now(packet_type); 752 } 753 754 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 755 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 756 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 757 } 758 759 bool hci_can_send_acl_le_packet_now(void){ 760 if (hci_stack->hci_packet_buffer_reserved) return false; 761 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 762 } 763 764 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 765 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 766 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 767 } 768 769 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 770 if (hci_stack->hci_packet_buffer_reserved) return false; 771 return hci_can_send_prepared_acl_packet_now(con_handle); 772 } 773 774 #ifdef ENABLE_CLASSIC 775 bool hci_can_send_acl_classic_packet_now(void){ 776 if (hci_stack->hci_packet_buffer_reserved) return false; 777 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 778 } 779 780 bool hci_can_send_prepared_sco_packet_now(void){ 781 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 782 if (hci_have_usb_transport()){ 783 return hci_stack->sco_can_send_now; 784 } else { 785 return hci_number_free_sco_slots() > 0; 786 } 787 } 788 789 bool hci_can_send_sco_packet_now(void){ 790 if (hci_stack->hci_packet_buffer_reserved) return false; 791 return hci_can_send_prepared_sco_packet_now(); 792 } 793 794 void hci_request_sco_can_send_now_event(void){ 795 hci_stack->sco_waiting_for_can_send_now = 1; 796 hci_notify_if_sco_can_send_now(); 797 } 798 #endif 799 800 // used for internal checks in l2cap.c 801 bool hci_is_packet_buffer_reserved(void){ 802 return hci_stack->hci_packet_buffer_reserved; 803 } 804 805 // reserves outgoing packet buffer. 806 // @return 1 if successful 807 bool hci_reserve_packet_buffer(void){ 808 if (hci_stack->hci_packet_buffer_reserved) { 809 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 810 return false; 811 } 812 hci_stack->hci_packet_buffer_reserved = true; 813 return true; 814 } 815 816 void hci_release_packet_buffer(void){ 817 hci_stack->hci_packet_buffer_reserved = false; 818 } 819 820 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 821 static int hci_transport_synchronous(void){ 822 return hci_stack->hci_transport->can_send_packet_now == NULL; 823 } 824 825 // used for debugging 826 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 827 static void hci_controller_dump_packets(void){ 828 // format: "{handle:04x}:{count:02d} " 829 char summaries[3][7 * 8 + 1]; 830 uint16_t totals[3]; 831 uint8_t index; 832 for (index = 0 ; index < 3 ; index++){ 833 summaries[index][0] = 0; 834 totals[index] = 0; 835 } 836 btstack_linked_item_t *it; 837 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 838 hci_connection_t * connection = (hci_connection_t *) it; 839 switch (connection->address_type){ 840 case BD_ADDR_TYPE_ACL: 841 index = 0; 842 break; 843 case BD_ADDR_TYPE_SCO: 844 index = 2; 845 break; 846 default: 847 index = 1; 848 break; 849 } 850 totals[index] += connection->num_packets_sent; 851 char item_text[10]; 852 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 853 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 854 } 855 for (index = 0 ; index < 3 ; index++){ 856 if (summaries[index][0] == 0){ 857 summaries[index][0] = '-'; 858 summaries[index][1] = 0; 859 } 860 } 861 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]); 862 } 863 #endif 864 865 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 866 867 // 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); 868 869 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 870 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 871 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 872 max_acl_data_packet_length = hci_stack->le_data_packets_length; 873 } 874 875 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 876 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 877 max_acl_data_packet_length = connection->le_max_tx_octets; 878 } 879 #endif 880 881 log_debug("hci_send_acl_packet_fragments entered"); 882 883 uint8_t status = ERROR_CODE_SUCCESS; 884 // multiple packets could be send on a synchronous HCI transport 885 while (true){ 886 887 log_debug("hci_send_acl_packet_fragments loop entered"); 888 889 // get current data 890 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 891 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 892 bool more_fragments = false; 893 894 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 895 if (current_acl_data_packet_length > max_acl_data_packet_length){ 896 more_fragments = true; 897 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 898 } 899 900 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 901 if (acl_header_pos > 0u){ 902 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 903 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 904 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 905 } 906 907 // update header len 908 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 909 910 // count packet 911 connection->num_packets_sent++; 912 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 913 914 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 915 if (more_fragments){ 916 // update start of next fragment to send 917 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 918 } else { 919 // done 920 hci_stack->acl_fragmentation_pos = 0; 921 hci_stack->acl_fragmentation_total_size = 0; 922 } 923 924 // send packet 925 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 926 const int size = current_acl_data_packet_length + 4; 927 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 928 hci_stack->acl_fragmentation_tx_active = 1; 929 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 930 if (err != 0){ 931 // no error from HCI Transport expected 932 status = ERROR_CODE_HARDWARE_FAILURE; 933 } 934 935 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 936 hci_controller_dump_packets(); 937 #endif 938 939 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 940 941 // done yet? 942 if (!more_fragments) break; 943 944 // can send more? 945 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 946 } 947 948 log_debug("hci_send_acl_packet_fragments loop over"); 949 950 // release buffer now for synchronous transport 951 if (hci_transport_synchronous()){ 952 hci_stack->acl_fragmentation_tx_active = 0; 953 hci_release_packet_buffer(); 954 hci_emit_transport_packet_sent(); 955 } 956 957 return status; 958 } 959 960 // pre: caller has reserved the packet buffer 961 uint8_t hci_send_acl_packet_buffer(int size){ 962 btstack_assert(hci_stack->hci_packet_buffer_reserved); 963 964 uint8_t * packet = hci_stack->hci_packet_buffer; 965 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 966 967 // check for free places on Bluetooth module 968 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 969 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 970 hci_release_packet_buffer(); 971 hci_emit_transport_packet_sent(); 972 return BTSTACK_ACL_BUFFERS_FULL; 973 } 974 975 hci_connection_t *connection = hci_connection_for_handle( con_handle); 976 if (!connection) { 977 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 978 hci_release_packet_buffer(); 979 hci_emit_transport_packet_sent(); 980 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 981 } 982 983 #ifdef ENABLE_CLASSIC 984 hci_connection_timestamp(connection); 985 #endif 986 987 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 988 989 // setup data 990 hci_stack->acl_fragmentation_total_size = size; 991 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 992 993 return hci_send_acl_packet_fragments(connection); 994 } 995 996 #ifdef ENABLE_CLASSIC 997 // pre: caller has reserved the packet buffer 998 uint8_t hci_send_sco_packet_buffer(int size){ 999 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1000 1001 uint8_t * packet = hci_stack->hci_packet_buffer; 1002 1003 // skip checks in loopback mode 1004 if (!hci_stack->loopback_mode){ 1005 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1006 1007 // check for free places on Bluetooth module 1008 if (!hci_can_send_prepared_sco_packet_now()) { 1009 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1010 hci_release_packet_buffer(); 1011 hci_emit_transport_packet_sent(); 1012 return BTSTACK_ACL_BUFFERS_FULL; 1013 } 1014 1015 // track send packet in connection struct 1016 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1017 if (!connection) { 1018 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1019 hci_release_packet_buffer(); 1020 hci_emit_transport_packet_sent(); 1021 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1022 } 1023 1024 if (hci_have_usb_transport()){ 1025 // token used 1026 hci_stack->sco_can_send_now = false; 1027 } else { 1028 if (hci_stack->synchronous_flow_control_enabled){ 1029 connection->num_packets_sent++; 1030 } else { 1031 connection->sco_tx_ready--; 1032 } 1033 } 1034 } 1035 1036 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1037 1038 #ifdef HAVE_SCO_TRANSPORT 1039 hci_stack->sco_transport->send_packet(packet, size); 1040 hci_release_packet_buffer(); 1041 hci_emit_transport_packet_sent(); 1042 1043 return 0; 1044 #else 1045 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1046 if (hci_transport_synchronous()){ 1047 hci_release_packet_buffer(); 1048 hci_emit_transport_packet_sent(); 1049 } 1050 1051 if (err != 0){ 1052 return ERROR_CODE_HARDWARE_FAILURE; 1053 } 1054 return ERROR_CODE_SUCCESS; 1055 #endif 1056 } 1057 #endif 1058 1059 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1060 static uint8_t hci_send_iso_packet_fragments(void){ 1061 1062 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1063 uint8_t status = ERROR_CODE_SUCCESS; 1064 // multiple packets could be send on a synchronous HCI transport 1065 while (true){ 1066 1067 // get current data 1068 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1069 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1070 bool more_fragments = false; 1071 1072 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1073 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1074 more_fragments = true; 1075 current_iso_data_packet_length = max_iso_data_packet_length; 1076 } 1077 1078 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1079 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1080 uint8_t pb_flags; 1081 if (iso_header_pos == 0u){ 1082 // first fragment, keep TS field 1083 pb_flags = more_fragments ? 0x00 : 0x02; 1084 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1085 } else { 1086 // later fragment, drop TS field 1087 pb_flags = more_fragments ? 0x01 : 0x03; 1088 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1089 } 1090 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1091 1092 // update header len 1093 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1094 1095 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1096 if (more_fragments){ 1097 // update start of next fragment to send 1098 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1099 } else { 1100 // done 1101 hci_stack->iso_fragmentation_pos = 0; 1102 hci_stack->iso_fragmentation_total_size = 0; 1103 } 1104 1105 // send packet 1106 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1107 const int size = current_iso_data_packet_length + 4; 1108 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1109 hci_stack->iso_fragmentation_tx_active = true; 1110 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1111 if (err != 0){ 1112 // no error from HCI Transport expected 1113 status = ERROR_CODE_HARDWARE_FAILURE; 1114 } 1115 1116 // done yet? 1117 if (!more_fragments) break; 1118 1119 // can send more? 1120 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1121 } 1122 1123 // release buffer now for synchronous transport 1124 if (hci_transport_synchronous()){ 1125 hci_stack->iso_fragmentation_tx_active = false; 1126 hci_release_packet_buffer(); 1127 hci_emit_transport_packet_sent(); 1128 } 1129 1130 return status; 1131 } 1132 1133 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1134 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1135 1136 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1137 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1138 if (iso_stream == NULL){ 1139 hci_release_packet_buffer(); 1140 hci_iso_notify_can_send_now(); 1141 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1142 } 1143 1144 // TODO: check for space on controller 1145 1146 // skip iso packets if needed 1147 if (iso_stream->num_packets_to_skip > 0){ 1148 iso_stream->num_packets_to_skip--; 1149 // pretend it was processed and trigger next one 1150 hci_release_packet_buffer(); 1151 hci_iso_notify_can_send_now(); 1152 return ERROR_CODE_SUCCESS; 1153 } 1154 1155 // track outgoing packet sent 1156 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1157 iso_stream->num_packets_sent++; 1158 1159 // setup data 1160 hci_stack->iso_fragmentation_total_size = size; 1161 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1162 1163 return hci_send_iso_packet_fragments(); 1164 } 1165 #endif 1166 1167 static void acl_handler(uint8_t *packet, uint16_t size){ 1168 1169 // get info 1170 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1171 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1172 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1173 uint16_t acl_length = READ_ACL_LENGTH(packet); 1174 1175 // ignore non-registered handle 1176 if (!conn){ 1177 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1178 return; 1179 } 1180 1181 // assert packet is complete 1182 if ((acl_length + 4u) != size){ 1183 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1184 return; 1185 } 1186 1187 #ifdef ENABLE_CLASSIC 1188 // update idle timestamp 1189 hci_connection_timestamp(conn); 1190 #endif 1191 1192 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1193 hci_stack->host_completed_packets = 1; 1194 conn->num_packets_completed++; 1195 #endif 1196 1197 // handle different packet types 1198 switch (acl_flags & 0x03u) { 1199 1200 case 0x01: // continuation fragment 1201 1202 // sanity checks 1203 if (conn->acl_recombination_pos == 0u) { 1204 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1205 return; 1206 } 1207 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1208 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1209 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1210 conn->acl_recombination_pos = 0; 1211 return; 1212 } 1213 1214 // append fragment payload (header already stored) 1215 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1216 &packet[4], acl_length); 1217 conn->acl_recombination_pos += acl_length; 1218 1219 // forward complete L2CAP packet if complete. 1220 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1221 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1222 // reset recombination buffer 1223 conn->acl_recombination_length = 0; 1224 conn->acl_recombination_pos = 0; 1225 } 1226 break; 1227 1228 case 0x02: { // first fragment 1229 1230 // sanity check 1231 if (conn->acl_recombination_pos) { 1232 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1233 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1234 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1235 } 1236 conn->acl_recombination_pos = 0; 1237 } 1238 1239 // peek into L2CAP packet! 1240 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1241 1242 // compare fragment size to L2CAP packet size 1243 if (acl_length >= (l2cap_length + 4u)){ 1244 // forward fragment as L2CAP packet 1245 hci_emit_acl_packet(packet, acl_length + 4u); 1246 } else { 1247 1248 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1249 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1250 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1251 return; 1252 } 1253 1254 // store first fragment and tweak acl length for complete package 1255 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1256 packet, acl_length + 4u); 1257 conn->acl_recombination_pos = acl_length + 4u; 1258 conn->acl_recombination_length = l2cap_length; 1259 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1260 } 1261 break; 1262 1263 } 1264 default: 1265 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1266 return; 1267 } 1268 1269 // execute main loop 1270 hci_run(); 1271 } 1272 1273 static void hci_connection_stop_timer(hci_connection_t * conn){ 1274 btstack_run_loop_remove_timer(&conn->timeout); 1275 #ifdef ENABLE_CLASSIC 1276 btstack_run_loop_remove_timer(&conn->timeout_sco); 1277 #endif 1278 } 1279 1280 static void hci_shutdown_connection(hci_connection_t *conn){ 1281 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1282 1283 #ifdef ENABLE_CLASSIC 1284 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1285 bd_addr_type_t addr_type = conn->address_type; 1286 #endif 1287 #ifdef HAVE_SCO_TRANSPORT 1288 hci_con_handle_t con_handle = conn->con_handle; 1289 #endif 1290 #endif 1291 1292 hci_connection_stop_timer(conn); 1293 1294 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1295 btstack_memory_hci_connection_free( conn ); 1296 1297 // now it's gone 1298 hci_emit_nr_connections_changed(); 1299 1300 #ifdef ENABLE_CLASSIC 1301 #ifdef ENABLE_SCO_OVER_HCI 1302 // update SCO 1303 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1304 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1305 } 1306 #endif 1307 #ifdef HAVE_SCO_TRANSPORT 1308 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1309 hci_stack->sco_transport->close(con_handle); 1310 } 1311 #endif 1312 #endif 1313 } 1314 1315 #ifdef ENABLE_CLASSIC 1316 1317 static const uint16_t packet_type_sizes[] = { 1318 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1319 HCI_ACL_DH1_SIZE, 0, 0, 0, 1320 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1321 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1322 }; 1323 static const uint8_t packet_type_feature_requirement_bit[] = { 1324 0, // 3 slot packets 1325 1, // 5 slot packets 1326 25, // EDR 2 mpbs 1327 26, // EDR 3 mbps 1328 39, // 3 slot EDR packts 1329 40, // 5 slot EDR packet 1330 }; 1331 static const uint16_t packet_type_feature_packet_mask[] = { 1332 0x0f00, // 3 slot packets 1333 0xf000, // 5 slot packets 1334 0x1102, // EDR 2 mpbs 1335 0x2204, // EDR 3 mbps 1336 0x0300, // 3 slot EDR packts 1337 0x3000, // 5 slot EDR packet 1338 }; 1339 1340 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1341 // enable packet types based on size 1342 uint16_t packet_types = 0; 1343 unsigned int i; 1344 for (i=0;i<16;i++){ 1345 if (packet_type_sizes[i] == 0) continue; 1346 if (packet_type_sizes[i] <= buffer_size){ 1347 packet_types |= 1 << i; 1348 } 1349 } 1350 // disable packet types due to missing local supported features 1351 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1352 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1353 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1354 if (feature_set) continue; 1355 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1356 packet_types &= ~packet_type_feature_packet_mask[i]; 1357 } 1358 // flip bits for "may not be used" 1359 packet_types ^= 0x3306; 1360 return packet_types; 1361 } 1362 1363 uint16_t hci_usable_acl_packet_types(void){ 1364 return hci_stack->packet_types; 1365 } 1366 #endif 1367 1368 uint8_t* hci_get_outgoing_packet_buffer(void){ 1369 // hci packet buffer is >= acl data packet length 1370 return hci_stack->hci_packet_buffer; 1371 } 1372 1373 uint16_t hci_max_acl_data_packet_length(void){ 1374 return hci_stack->acl_data_packet_length; 1375 } 1376 1377 #ifdef ENABLE_CLASSIC 1378 bool hci_extended_sco_link_supported(void){ 1379 // No. 31, byte 3, bit 7 1380 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1381 } 1382 #endif 1383 1384 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1385 // No. 54, byte 6, bit 6 1386 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1387 } 1388 1389 #ifdef ENABLE_CLASSIC 1390 static int gap_ssp_supported(void){ 1391 // No. 51, byte 6, bit 3 1392 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1393 } 1394 #endif 1395 1396 static int hci_classic_supported(void){ 1397 #ifdef ENABLE_CLASSIC 1398 // No. 37, byte 4, bit 5, = No BR/EDR Support 1399 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1400 #else 1401 return 0; 1402 #endif 1403 } 1404 1405 static int hci_le_supported(void){ 1406 #ifdef ENABLE_BLE 1407 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1408 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1409 #else 1410 return 0; 1411 #endif 1412 } 1413 1414 static bool hci_command_supported(uint8_t command_index){ 1415 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1416 } 1417 1418 #ifdef ENABLE_BLE 1419 1420 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1421 static bool hci_extended_advertising_supported(void){ 1422 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1423 } 1424 #endif 1425 1426 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1427 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1428 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1429 } else { 1430 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1431 } 1432 } 1433 1434 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1435 *addr_type = hci_stack->le_own_addr_type; 1436 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1437 } 1438 1439 #ifdef ENABLE_LE_PERIPHERAL 1440 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1441 *addr_type = hci_stack->le_advertisements_own_addr_type; 1442 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1443 }; 1444 #endif 1445 1446 #ifdef ENABLE_LE_CENTRAL 1447 1448 /** 1449 * @brief Get own addr type and address used for LE connections (Central) 1450 */ 1451 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1452 *addr_type = hci_stack->le_connection_own_addr_type; 1453 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1454 } 1455 1456 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1457 1458 uint16_t offset = 3; 1459 uint8_t num_reports = packet[offset]; 1460 offset += 1; 1461 1462 uint16_t i; 1463 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1464 for (i=0; (i<num_reports) && (offset < size);i++){ 1465 // sanity checks on data_length: 1466 uint8_t data_length = packet[offset + 8]; 1467 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1468 if ((offset + 9u + data_length + 1u) > size) return; 1469 // setup event 1470 uint8_t event_size = 10u + data_length; 1471 uint16_t pos = 0; 1472 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1473 event[pos++] = event_size; 1474 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1475 offset += 8; 1476 pos += 8; 1477 event[pos++] = packet[offset + 1 + data_length]; // rssi 1478 event[pos++] = data_length; 1479 offset++; 1480 (void)memcpy(&event[pos], &packet[offset], data_length); 1481 pos += data_length; 1482 offset += data_length + 1u; // rssi 1483 hci_emit_event(event, pos, 1); 1484 } 1485 } 1486 1487 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1488 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1489 uint16_t offset = 3; 1490 uint8_t num_reports = packet[offset++]; 1491 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1492 uint8_t i; 1493 for (i=0; (i<num_reports) && (offset < size);i++){ 1494 // sanity checks on data_length: 1495 uint16_t data_length = packet[offset + 23]; 1496 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1497 if ((offset + 24u + data_length) > size) return; 1498 uint16_t event_type = little_endian_read_16(packet, offset); 1499 offset += 2; 1500 if ((event_type & 0x10) != 0) { 1501 // setup legacy event 1502 uint8_t legacy_event_type; 1503 switch (event_type){ 1504 case 0b0010011: 1505 // ADV_IND 1506 legacy_event_type = 0; 1507 break; 1508 case 0b0010101: 1509 // ADV_DIRECT_IND 1510 legacy_event_type = 1; 1511 break; 1512 case 0b0010010: 1513 // ADV_SCAN_IND 1514 legacy_event_type = 2; 1515 break; 1516 case 0b0010000: 1517 // ADV_NONCONN_IND 1518 legacy_event_type = 3; 1519 break; 1520 case 0b0011011: 1521 case 0b0011010: 1522 // SCAN_RSP 1523 legacy_event_type = 4; 1524 break; 1525 default: 1526 legacy_event_type = 0; 1527 break; 1528 } 1529 uint16_t pos = 0; 1530 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1531 event[pos++] = 10u + data_length; 1532 event[pos++] = legacy_event_type; 1533 // copy address type + address 1534 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1535 offset += 7; 1536 pos += 7; 1537 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1538 offset += 4; 1539 // copy rssi 1540 event[pos++] = packet[offset++]; 1541 // skip periodic advertising interval and direct address 1542 offset += 9; 1543 // copy data len + data; 1544 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1545 pos += 1 +data_length; 1546 offset += 1+ data_length; 1547 hci_emit_event(event, pos, 1); 1548 } else { 1549 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1550 uint8_t report_len = 24 + data_length; 1551 event[1] = report_len; 1552 little_endian_store_16(event, 2, event_type); 1553 memcpy(&event[4], &packet[offset], report_len); 1554 offset += report_len; 1555 hci_emit_event(event, 2 + report_len, 1); 1556 } 1557 } 1558 } 1559 #endif 1560 1561 #endif 1562 #endif 1563 1564 #ifdef ENABLE_BLE 1565 #ifdef ENABLE_LE_PERIPHERAL 1566 static void hci_update_advertisements_enabled_for_current_roles(void){ 1567 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1568 // get number of active le slave connections 1569 int num_slave_connections = 0; 1570 btstack_linked_list_iterator_t it; 1571 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1572 while (btstack_linked_list_iterator_has_next(&it)){ 1573 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1574 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1575 if (con->state != OPEN) continue; 1576 if (con->role != HCI_ROLE_SLAVE) continue; 1577 if (!hci_is_le_connection(con)) continue; 1578 num_slave_connections++; 1579 } 1580 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1581 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1582 } else { 1583 hci_stack->le_advertisements_enabled_for_current_roles = false; 1584 } 1585 } 1586 #endif 1587 #endif 1588 1589 #ifdef ENABLE_CLASSIC 1590 static void gap_run_set_local_name(void){ 1591 hci_reserve_packet_buffer(); 1592 uint8_t * packet = hci_stack->hci_packet_buffer; 1593 // construct HCI Command and send 1594 uint16_t opcode = hci_write_local_name.opcode; 1595 hci_stack->last_cmd_opcode = opcode; 1596 packet[0] = opcode & 0xff; 1597 packet[1] = opcode >> 8; 1598 packet[2] = DEVICE_NAME_LEN; 1599 memset(&packet[3], 0, DEVICE_NAME_LEN); 1600 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1601 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1602 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1603 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1604 // expand '00:00:00:00:00:00' in name with bd_addr 1605 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1606 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1607 } 1608 1609 static void gap_run_set_eir_data(void){ 1610 hci_reserve_packet_buffer(); 1611 uint8_t * packet = hci_stack->hci_packet_buffer; 1612 // construct HCI Command in-place and send 1613 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1614 hci_stack->last_cmd_opcode = opcode; 1615 uint16_t offset = 0; 1616 packet[offset++] = opcode & 0xff; 1617 packet[offset++] = opcode >> 8; 1618 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1619 packet[offset++] = 0; // FEC not required 1620 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1621 if (hci_stack->eir_data){ 1622 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1623 ad_context_t context; 1624 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1625 uint8_t data_type = ad_iterator_get_data_type(&context); 1626 uint8_t size = ad_iterator_get_data_len(&context); 1627 const uint8_t *data = ad_iterator_get_data(&context); 1628 // copy item 1629 packet[offset++] = size + 1; 1630 packet[offset++] = data_type; 1631 memcpy(&packet[offset], data, size); 1632 // update name item 1633 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1634 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1635 } 1636 offset += size; 1637 } 1638 } else { 1639 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1640 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1641 packet[offset++] = bytes_to_copy + 1; 1642 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1643 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1644 // expand '00:00:00:00:00:00' in name with bd_addr 1645 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1646 } 1647 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1648 } 1649 1650 static void hci_run_gap_tasks_classic(void){ 1651 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1652 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1653 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1654 return; 1655 } 1656 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1657 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1658 gap_run_set_local_name(); 1659 return; 1660 } 1661 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1662 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1663 gap_run_set_eir_data(); 1664 return; 1665 } 1666 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1667 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1668 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1669 return; 1670 } 1671 // write page scan activity 1672 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1673 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1674 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1675 return; 1676 } 1677 // write page scan type 1678 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1679 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1680 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1681 return; 1682 } 1683 // write page timeout 1684 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1685 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1686 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1687 return; 1688 } 1689 // send scan enable 1690 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1691 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1692 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1693 return; 1694 } 1695 // send write scan activity 1696 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1697 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1698 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1699 return; 1700 } 1701 } 1702 #endif 1703 1704 #ifndef HAVE_HOST_CONTROLLER_API 1705 1706 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1707 if (!hci_stack->config) return 0; 1708 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1709 // Limit baud rate for Broadcom chipsets to 3 mbps 1710 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1711 baud_rate = 3000000; 1712 } 1713 return baud_rate; 1714 } 1715 1716 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1717 UNUSED(ds); 1718 1719 switch (hci_stack->substate){ 1720 case HCI_INIT_W4_SEND_RESET: 1721 log_info("Resend HCI Reset"); 1722 hci_stack->substate = HCI_INIT_SEND_RESET; 1723 hci_stack->num_cmd_packets = 1; 1724 hci_run(); 1725 break; 1726 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1727 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1728 if (hci_stack->hci_transport->reset_link){ 1729 hci_stack->hci_transport->reset_link(); 1730 } 1731 1732 /* fall through */ 1733 1734 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1735 log_info("Resend HCI Reset - CSR Warm Boot"); 1736 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1737 hci_stack->num_cmd_packets = 1; 1738 hci_run(); 1739 break; 1740 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1741 if (hci_stack->hci_transport->set_baudrate){ 1742 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1743 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1744 hci_stack->hci_transport->set_baudrate(baud_rate); 1745 } 1746 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1747 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1748 if (hci_stack->hci_transport->reset_link){ 1749 log_info("Link Reset"); 1750 hci_stack->hci_transport->reset_link(); 1751 } 1752 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1753 hci_run(); 1754 } 1755 break; 1756 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1757 // otherwise continue 1758 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1759 hci_send_cmd(&hci_read_local_supported_commands); 1760 break; 1761 default: 1762 break; 1763 } 1764 } 1765 #endif 1766 1767 static void hci_initializing_next_state(void){ 1768 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1769 } 1770 1771 static void hci_init_done(void){ 1772 // done. tell the app 1773 log_info("hci_init_done -> HCI_STATE_WORKING"); 1774 hci_stack->state = HCI_STATE_WORKING; 1775 hci_emit_state(); 1776 } 1777 1778 // assumption: hci_can_send_command_packet_now() == true 1779 static void hci_initializing_run(void){ 1780 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1781 1782 if (!hci_can_send_command_packet_now()) return; 1783 1784 #ifndef HAVE_HOST_CONTROLLER_API 1785 bool need_baud_change = hci_stack->config 1786 && hci_stack->chipset 1787 && hci_stack->chipset->set_baudrate_command 1788 && hci_stack->hci_transport->set_baudrate 1789 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1790 #endif 1791 1792 switch (hci_stack->substate){ 1793 case HCI_INIT_SEND_RESET: 1794 hci_state_reset(); 1795 1796 #ifndef HAVE_HOST_CONTROLLER_API 1797 // prepare reset if command complete not received in 100ms 1798 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1799 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1800 btstack_run_loop_add_timer(&hci_stack->timeout); 1801 #endif 1802 // send command 1803 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1804 hci_send_cmd(&hci_reset); 1805 break; 1806 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1807 hci_send_cmd(&hci_read_local_version_information); 1808 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1809 break; 1810 1811 #ifndef HAVE_HOST_CONTROLLER_API 1812 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1813 hci_state_reset(); 1814 // prepare reset if command complete not received in 100ms 1815 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1816 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1817 btstack_run_loop_add_timer(&hci_stack->timeout); 1818 // send command 1819 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1820 hci_send_cmd(&hci_reset); 1821 break; 1822 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1823 hci_state_reset(); 1824 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1825 hci_send_cmd(&hci_reset); 1826 break; 1827 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1828 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1829 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1830 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1831 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1832 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1833 break; 1834 } 1835 case HCI_INIT_SET_BD_ADDR: 1836 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1837 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1838 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1839 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1840 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1841 break; 1842 case HCI_INIT_SEND_READ_LOCAL_NAME: 1843 #ifdef ENABLE_CLASSIC 1844 hci_send_cmd(&hci_read_local_name); 1845 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1846 break; 1847 #endif 1848 /* fall through */ 1849 1850 case HCI_INIT_SEND_BAUD_CHANGE: 1851 if (need_baud_change) { 1852 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1853 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1854 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1855 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1856 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1857 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1858 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1859 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1860 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1861 btstack_run_loop_add_timer(&hci_stack->timeout); 1862 } 1863 break; 1864 } 1865 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1866 1867 /* fall through */ 1868 1869 case HCI_INIT_CUSTOM_INIT: 1870 case HCI_INIT_CUSTOM_PRE_INIT: 1871 // Custom initialization 1872 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1873 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1874 bool send_cmd = false; 1875 switch (hci_stack->chipset_result){ 1876 case BTSTACK_CHIPSET_VALID_COMMAND: 1877 send_cmd = true; 1878 switch (hci_stack->substate){ 1879 case HCI_INIT_CUSTOM_INIT: 1880 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1881 break; 1882 case HCI_INIT_CUSTOM_PRE_INIT: 1883 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1884 break; 1885 default: 1886 btstack_assert(false); 1887 break; 1888 } 1889 break; 1890 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1891 send_cmd = true; 1892 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1893 log_info("CSR Warm Boot"); 1894 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1895 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1896 btstack_run_loop_add_timer(&hci_stack->timeout); 1897 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1898 && hci_stack->config 1899 && hci_stack->chipset 1900 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1901 && hci_stack->hci_transport->set_baudrate 1902 && hci_transport_uart_get_main_baud_rate()){ 1903 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1904 } else { 1905 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1906 } 1907 break; 1908 default: 1909 break; 1910 } 1911 1912 if (send_cmd){ 1913 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1914 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1915 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1916 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1917 break; 1918 } 1919 log_info("Init script done"); 1920 1921 // Custom Pre-Init complete, start regular init with HCI Reset 1922 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1923 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1924 hci_send_cmd(&hci_reset); 1925 break; 1926 } 1927 1928 // Init script download on Broadcom chipsets causes: 1929 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1930 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1931 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1932 1933 // - baud rate to reset, restore UART baud rate if needed 1934 if (need_baud_change) { 1935 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1936 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1937 hci_stack->hci_transport->set_baudrate(baud_rate); 1938 } 1939 1940 uint16_t bcm_delay_ms = 300; 1941 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1942 // -> Work around: wait here. 1943 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1944 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1945 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1946 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1947 btstack_run_loop_add_timer(&hci_stack->timeout); 1948 break; 1949 } 1950 } 1951 #endif 1952 /* fall through */ 1953 1954 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1955 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1956 hci_send_cmd(&hci_read_local_supported_commands); 1957 break; 1958 case HCI_INIT_READ_BD_ADDR: 1959 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1960 hci_send_cmd(&hci_read_bd_addr); 1961 break; 1962 case HCI_INIT_READ_BUFFER_SIZE: 1963 // only read buffer size if supported 1964 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1965 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1966 hci_send_cmd(&hci_read_buffer_size); 1967 break; 1968 } 1969 1970 /* fall through */ 1971 1972 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1973 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1974 hci_send_cmd(&hci_read_local_supported_features); 1975 break; 1976 1977 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1978 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1979 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1980 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1981 break; 1982 case HCI_INIT_HOST_BUFFER_SIZE: 1983 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1984 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1985 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1986 break; 1987 #endif 1988 1989 case HCI_INIT_SET_EVENT_MASK: 1990 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1991 if (hci_le_supported()){ 1992 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1993 } else { 1994 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1995 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1996 } 1997 break; 1998 1999 case HCI_INIT_SET_EVENT_MASK_2: 2000 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2001 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2002 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2003 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2004 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2005 // Encryption Change Event v2 - bit 25 2006 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2007 break; 2008 } 2009 2010 #ifdef ENABLE_CLASSIC 2011 /* fall through */ 2012 2013 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2014 if (hci_classic_supported() && gap_ssp_supported()){ 2015 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2016 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2017 break; 2018 } 2019 2020 /* fall through */ 2021 2022 case HCI_INIT_WRITE_INQUIRY_MODE: 2023 if (hci_classic_supported()){ 2024 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2025 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2026 break; 2027 } 2028 2029 /* fall through */ 2030 2031 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2032 // skip write secure connections host support if not supported or disabled 2033 if (hci_classic_supported() && hci_stack->secure_connections_enable 2034 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2035 hci_stack->secure_connections_active = true; 2036 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2037 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2038 break; 2039 } 2040 2041 /* fall through */ 2042 2043 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2044 // skip set min encryption key size 2045 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2046 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2047 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2048 break; 2049 } 2050 2051 #ifdef ENABLE_SCO_OVER_HCI 2052 /* fall through */ 2053 2054 // only sent if ENABLE_SCO_OVER_HCI is defined 2055 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2056 // skip write synchronous flow control if not supported 2057 if (hci_classic_supported() 2058 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2059 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2060 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2061 break; 2062 } 2063 /* fall through */ 2064 2065 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2066 // skip write default erroneous data reporting if not supported 2067 if (hci_classic_supported() 2068 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2069 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2070 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2071 break; 2072 } 2073 #endif 2074 2075 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2076 /* fall through */ 2077 2078 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2079 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2080 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2081 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2082 #ifdef ENABLE_SCO_OVER_HCI 2083 log_info("BCM: Route SCO data via HCI transport"); 2084 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2085 #endif 2086 #ifdef ENABLE_SCO_OVER_PCM 2087 log_info("BCM: Route SCO data via PCM interface"); 2088 #ifdef ENABLE_BCM_PCM_WBS 2089 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2090 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2091 #else 2092 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2093 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2094 #endif 2095 #endif 2096 break; 2097 } 2098 #endif 2099 2100 #ifdef ENABLE_SCO_OVER_PCM 2101 /* fall through */ 2102 2103 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2104 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2105 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2106 log_info("BCM: Config PCM interface for I2S"); 2107 #ifdef ENABLE_BCM_PCM_WBS 2108 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2109 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2110 #else 2111 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2112 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2113 #endif 2114 break; 2115 } 2116 #endif 2117 #endif 2118 2119 #ifdef ENABLE_BLE 2120 /* fall through */ 2121 2122 // LE INIT 2123 case HCI_INIT_LE_READ_BUFFER_SIZE: 2124 if (hci_le_supported()){ 2125 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2126 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2127 hci_send_cmd(&hci_le_read_buffer_size_v2); 2128 } else { 2129 hci_send_cmd(&hci_le_read_buffer_size); 2130 } 2131 break; 2132 } 2133 2134 /* fall through */ 2135 2136 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2137 // skip write le host if not supported (e.g. on LE only EM9301) 2138 if (hci_le_supported() 2139 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2140 // LE Supported Host = 1, Simultaneous Host = 0 2141 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2142 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2143 break; 2144 } 2145 2146 /* fall through */ 2147 2148 case HCI_INIT_LE_SET_EVENT_MASK: 2149 if (hci_le_supported()){ 2150 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2151 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2152 break; 2153 } 2154 #endif 2155 2156 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2157 /* fall through */ 2158 2159 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2160 if (hci_le_supported() 2161 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2162 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2163 hci_send_cmd(&hci_le_read_maximum_data_length); 2164 break; 2165 } 2166 2167 /* fall through */ 2168 2169 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2170 if (hci_le_supported() 2171 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2172 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2173 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2174 break; 2175 } 2176 #endif 2177 2178 #ifdef ENABLE_LE_CENTRAL 2179 /* fall through */ 2180 2181 case HCI_INIT_READ_WHITE_LIST_SIZE: 2182 if (hci_le_supported()){ 2183 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2184 hci_send_cmd(&hci_le_read_white_list_size); 2185 break; 2186 } 2187 2188 #endif 2189 2190 #ifdef ENABLE_LE_PERIPHERAL 2191 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2192 /* fall through */ 2193 2194 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2195 if (hci_extended_advertising_supported()){ 2196 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2197 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2198 break; 2199 } 2200 #endif 2201 #endif 2202 /* fall through */ 2203 2204 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2205 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2206 if (hci_le_supported()) { 2207 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2208 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2209 break; 2210 } 2211 #endif 2212 2213 /* fall through */ 2214 2215 case HCI_INIT_DONE: 2216 hci_stack->substate = HCI_INIT_DONE; 2217 // main init sequence complete 2218 #ifdef ENABLE_CLASSIC 2219 // check if initial Classic GAP Tasks are completed 2220 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2221 hci_run_gap_tasks_classic(); 2222 break; 2223 } 2224 #endif 2225 #ifdef ENABLE_BLE 2226 #ifdef ENABLE_LE_CENTRAL 2227 // check if initial LE GAP Tasks are completed 2228 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2229 hci_run_general_gap_le(); 2230 break; 2231 } 2232 #endif 2233 #endif 2234 hci_init_done(); 2235 break; 2236 2237 default: 2238 return; 2239 } 2240 } 2241 2242 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2243 bool command_completed = false; 2244 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2245 uint16_t opcode = little_endian_read_16(packet,3); 2246 if (opcode == hci_stack->last_cmd_opcode){ 2247 command_completed = true; 2248 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2249 } else { 2250 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2251 } 2252 } 2253 2254 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2255 uint8_t status = packet[2]; 2256 uint16_t opcode = little_endian_read_16(packet,4); 2257 if (opcode == hci_stack->last_cmd_opcode){ 2258 if (status){ 2259 command_completed = true; 2260 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2261 } else { 2262 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2263 } 2264 } else { 2265 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2266 } 2267 } 2268 #ifndef HAVE_HOST_CONTROLLER_API 2269 // Vendor == CSR 2270 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2271 // TODO: track actual command 2272 command_completed = true; 2273 } 2274 2275 // Vendor == Toshiba 2276 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2277 // TODO: track actual command 2278 command_completed = true; 2279 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2280 hci_stack->num_cmd_packets = 1; 2281 } 2282 #endif 2283 2284 return command_completed; 2285 } 2286 2287 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2288 2289 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2290 2291 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2292 2293 #ifndef HAVE_HOST_CONTROLLER_API 2294 2295 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2296 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2297 // 2298 // HCI Reset 2299 // Timeout 100 ms 2300 // HCI Reset 2301 // Command Complete Reset 2302 // HCI Read Local Version Information 2303 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2304 // hang... 2305 // 2306 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2307 if (!command_completed 2308 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2309 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2310 2311 uint16_t opcode = little_endian_read_16(packet,3); 2312 if (opcode == hci_reset.opcode){ 2313 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2314 return; 2315 } 2316 } 2317 2318 // CSR & H5 2319 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2320 if (!command_completed 2321 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2322 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2323 2324 uint16_t opcode = little_endian_read_16(packet,3); 2325 if (opcode == hci_reset.opcode){ 2326 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2327 return; 2328 } 2329 } 2330 2331 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2332 // fix: Correct substate and behave as command below 2333 if (command_completed){ 2334 switch (hci_stack->substate){ 2335 case HCI_INIT_SEND_RESET: 2336 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2337 break; 2338 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2339 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2340 break; 2341 default: 2342 break; 2343 } 2344 } 2345 2346 #endif 2347 2348 if (!command_completed) return; 2349 2350 bool need_baud_change = false; 2351 bool need_addr_change = false; 2352 2353 #ifndef HAVE_HOST_CONTROLLER_API 2354 need_baud_change = hci_stack->config 2355 && hci_stack->chipset 2356 && hci_stack->chipset->set_baudrate_command 2357 && hci_stack->hci_transport->set_baudrate 2358 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2359 2360 need_addr_change = hci_stack->custom_bd_addr_set 2361 && hci_stack->chipset 2362 && hci_stack->chipset->set_bd_addr_command; 2363 #endif 2364 2365 switch(hci_stack->substate){ 2366 2367 #ifndef HAVE_HOST_CONTROLLER_API 2368 case HCI_INIT_SEND_RESET: 2369 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2370 // fix: just correct substate and behave as command below 2371 2372 /* fall through */ 2373 #endif 2374 2375 case HCI_INIT_W4_SEND_RESET: 2376 btstack_run_loop_remove_timer(&hci_stack->timeout); 2377 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2378 return; 2379 2380 #ifndef HAVE_HOST_CONTROLLER_API 2381 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2382 // for STLC2500D, baud rate change already happened. 2383 // for others, baud rate gets changed now 2384 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2385 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2386 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2387 hci_stack->hci_transport->set_baudrate(baud_rate); 2388 } 2389 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2390 return; 2391 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2392 btstack_run_loop_remove_timer(&hci_stack->timeout); 2393 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2394 return; 2395 case HCI_INIT_W4_CUSTOM_INIT: 2396 // repeat custom init 2397 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2398 return; 2399 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2400 // repeat custom init 2401 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2402 return; 2403 #endif 2404 2405 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2406 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2407 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2408 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2409 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2410 return; 2411 } 2412 if (need_addr_change){ 2413 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2414 return; 2415 } 2416 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2417 return; 2418 #ifndef HAVE_HOST_CONTROLLER_API 2419 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2420 if (need_baud_change){ 2421 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2422 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2423 hci_stack->hci_transport->set_baudrate(baud_rate); 2424 } 2425 if (need_addr_change){ 2426 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2427 return; 2428 } 2429 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2430 return; 2431 case HCI_INIT_W4_SET_BD_ADDR: 2432 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2433 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2434 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2435 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2436 return; 2437 } 2438 // skipping st warm boot 2439 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2440 return; 2441 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2442 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2443 return; 2444 #endif 2445 2446 case HCI_INIT_DONE: 2447 // set state if we came here by fall through 2448 hci_stack->substate = HCI_INIT_DONE; 2449 return; 2450 2451 default: 2452 break; 2453 } 2454 hci_initializing_next_state(); 2455 } 2456 2457 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2458 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2459 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2460 // check if we have been aware of the HCI connection 2461 switch (conn->state){ 2462 case SENT_CREATE_CONNECTION: 2463 case RECEIVED_CONNECTION_REQUEST: 2464 case ACCEPTED_CONNECTION_REQUEST: 2465 break; 2466 default: 2467 return; 2468 } 2469 2470 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2471 bd_addr_t bd_address; 2472 (void)memcpy(&bd_address, conn->address, 6); 2473 2474 #ifdef ENABLE_CLASSIC 2475 // cache needed data 2476 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2477 #endif 2478 2479 // connection failed, remove entry 2480 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2481 btstack_memory_hci_connection_free( conn ); 2482 2483 #ifdef ENABLE_CLASSIC 2484 // notify client if dedicated bonding 2485 if (notify_dedicated_bonding_failed){ 2486 log_info("hci notify_dedicated_bonding_failed"); 2487 hci_emit_dedicated_bonding_result(bd_address, status); 2488 } 2489 2490 // if authentication error, also delete link key 2491 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2492 gap_drop_link_key_for_bd_addr(bd_address); 2493 } 2494 #else 2495 UNUSED(status); 2496 #endif 2497 } 2498 2499 #ifdef ENABLE_CLASSIC 2500 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2501 // SSP Controller 2502 if (features[6] & (1 << 3)){ 2503 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2504 } 2505 // eSCO 2506 if (features[3] & (1<<7)){ 2507 conn->remote_supported_features[0] |= 1; 2508 } 2509 // Extended features 2510 if (features[7] & (1<<7)){ 2511 conn->remote_supported_features[0] |= 2; 2512 } 2513 } 2514 2515 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2516 // SSP Host 2517 if (features[0] & (1 << 0)){ 2518 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2519 } 2520 // SC Host 2521 if (features[0] & (1 << 3)){ 2522 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2523 } 2524 } 2525 2526 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2527 // SC Controller 2528 if (features[1] & (1 << 0)){ 2529 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2530 } 2531 } 2532 2533 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2534 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2535 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2536 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2537 if (conn->bonding_flags & BONDING_DEDICATED){ 2538 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2539 } 2540 } 2541 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2542 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2543 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2544 } 2545 2546 #endif 2547 2548 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2549 // handle BT initialization 2550 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2551 hci_initializing_event_handler(packet, size); 2552 } 2553 2554 // help with BT sleep 2555 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2556 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2557 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2558 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2559 hci_initializing_next_state(); 2560 } 2561 } 2562 2563 #ifdef ENABLE_CLASSIC 2564 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2565 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2566 conn->encryption_key_size = encryption_key_size; 2567 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2568 2569 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2570 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2571 conn->bonding_flags &= ~BONDING_DEDICATED; 2572 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2573 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2574 // emit dedicated bonding complete, don't disconnect 2575 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2576 #else 2577 // request disconnect, event is emitted after disconnect 2578 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2579 return; 2580 #endif 2581 } 2582 2583 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2584 conn->requested_security_level = LEVEL_0; 2585 hci_emit_security_level(conn->con_handle, security_level); 2586 return; 2587 } 2588 2589 // Request remote features if not already done 2590 hci_trigger_remote_features_for_connection(conn); 2591 2592 // Request Authentication if not already done 2593 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2594 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2595 } 2596 #endif 2597 2598 static void hci_store_local_supported_commands(const uint8_t * packet){ 2599 // create mapping table 2600 #define X(name, offset, bit) { offset, bit }, 2601 static struct { 2602 uint8_t byte_offset; 2603 uint8_t bit_position; 2604 } supported_hci_commands_map [] = { 2605 SUPPORTED_HCI_COMMANDS 2606 }; 2607 #undef X 2608 2609 // create names for debug purposes 2610 #ifdef ENABLE_LOG_DEBUG 2611 #define X(name, offset, bit) #name, 2612 static const char * command_names[] = { 2613 SUPPORTED_HCI_COMMANDS 2614 }; 2615 #undef X 2616 #endif 2617 2618 hci_stack->local_supported_commands = 0; 2619 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2620 uint16_t i; 2621 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2622 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2623 #ifdef ENABLE_LOG_DEBUG 2624 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); 2625 #else 2626 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2627 #endif 2628 hci_stack->local_supported_commands |= (1LU << i); 2629 } 2630 } 2631 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2632 } 2633 2634 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2635 UNUSED(size); 2636 2637 uint16_t manufacturer; 2638 #ifdef ENABLE_CLASSIC 2639 hci_con_handle_t handle; 2640 hci_connection_t * conn; 2641 #endif 2642 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2643 uint8_t status; 2644 #endif 2645 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2646 le_audio_cig_t * cig; 2647 #endif 2648 2649 // get num cmd packets - limit to 1 to reduce complexity 2650 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2651 2652 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2653 switch (opcode){ 2654 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2655 if (packet[5]) break; 2656 // terminate, name 248 chars 2657 packet[6+248] = 0; 2658 log_info("local name: %s", &packet[6]); 2659 break; 2660 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2661 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2662 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2663 uint16_t acl_len = little_endian_read_16(packet, 6); 2664 uint16_t sco_len = packet[8]; 2665 2666 // determine usable ACL/SCO payload size 2667 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2668 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2669 2670 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2671 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2672 2673 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2674 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2675 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2676 } 2677 break; 2678 case HCI_OPCODE_HCI_READ_RSSI: 2679 if (packet[5] == ERROR_CODE_SUCCESS){ 2680 uint8_t event[5]; 2681 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2682 event[1] = 3; 2683 (void)memcpy(&event[2], &packet[6], 3); 2684 hci_emit_event(event, sizeof(event), 1); 2685 } 2686 break; 2687 #ifdef ENABLE_BLE 2688 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2689 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2690 hci_stack->le_iso_packets_total_num = packet[11]; 2691 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2692 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2693 2694 /* fall through */ 2695 2696 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2697 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2698 hci_stack->le_acl_packets_total_num = packet[8]; 2699 // determine usable ACL payload size 2700 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2701 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2702 } 2703 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); 2704 break; 2705 #endif 2706 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2707 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2708 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2709 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2710 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); 2711 break; 2712 #endif 2713 #ifdef ENABLE_LE_CENTRAL 2714 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2715 hci_stack->le_whitelist_capacity = packet[6]; 2716 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2717 break; 2718 #endif 2719 #ifdef ENABLE_LE_PERIPHERAL 2720 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2721 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2722 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2723 break; 2724 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2725 if (hci_stack->le_advertising_set_in_current_command != 0) { 2726 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2727 hci_stack->le_advertising_set_in_current_command = 0; 2728 if (advertising_set == NULL) break; 2729 uint8_t adv_status = packet[6]; 2730 uint8_t tx_power = packet[7]; 2731 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 }; 2732 if (adv_status == 0){ 2733 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2734 } 2735 hci_emit_event(event, sizeof(event), 1); 2736 } 2737 break; 2738 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2739 if (hci_stack->le_advertising_set_in_current_command != 0) { 2740 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2741 hci_stack->le_advertising_set_in_current_command = 0; 2742 if (advertising_set == NULL) break; 2743 uint8_t adv_status = packet[5]; 2744 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2745 if (adv_status == 0){ 2746 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2747 } 2748 hci_emit_event(event, sizeof(event), 1); 2749 } 2750 break; 2751 #endif 2752 #endif 2753 case HCI_OPCODE_HCI_READ_BD_ADDR: 2754 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2755 log_info("Local Address, Status: 0x%02x: Addr: %s", packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack->local_bd_addr)); 2756 #ifdef ENABLE_CLASSIC 2757 if (hci_stack->link_key_db){ 2758 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2759 } 2760 #endif 2761 break; 2762 #ifdef ENABLE_CLASSIC 2763 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2764 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2765 break; 2766 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2767 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2768 if (status == ERROR_CODE_SUCCESS) { 2769 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2770 } else { 2771 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2772 } 2773 break; 2774 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2775 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2776 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2777 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2778 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2779 hci_emit_event(event, sizeof(event), 1); 2780 } 2781 break; 2782 #endif 2783 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2784 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2785 2786 #ifdef ENABLE_CLASSIC 2787 // determine usable ACL packet types based on host buffer size and supported features 2788 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2789 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2790 #endif 2791 // Classic/LE 2792 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2793 break; 2794 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2795 manufacturer = little_endian_read_16(packet, 10); 2796 // map Cypress & Infineon to Broadcom 2797 switch (manufacturer){ 2798 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2799 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2800 log_info("Treat Cypress/Infineon as Broadcom"); 2801 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2802 little_endian_store_16(packet, 10, manufacturer); 2803 break; 2804 default: 2805 break; 2806 } 2807 hci_stack->manufacturer = manufacturer; 2808 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2809 break; 2810 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2811 hci_store_local_supported_commands(packet); 2812 break; 2813 #ifdef ENABLE_CLASSIC 2814 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2815 if (packet[5]) return; 2816 hci_stack->synchronous_flow_control_enabled = 1; 2817 break; 2818 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2819 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2820 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2821 conn = hci_connection_for_handle(handle); 2822 if (conn != NULL) { 2823 uint8_t key_size = 0; 2824 if (status == 0){ 2825 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2826 log_info("Handle %04x key Size: %u", handle, key_size); 2827 } else { 2828 key_size = 1; 2829 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2830 } 2831 hci_handle_read_encryption_key_size_complete(conn, key_size); 2832 } 2833 break; 2834 // assert pairing complete event is emitted. 2835 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2836 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2837 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2838 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2839 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2840 // lookup connection by gap pairing addr 2841 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2842 if (conn == NULL) break; 2843 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2844 break; 2845 2846 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2847 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2848 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2849 uint8_t event[67]; 2850 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2851 event[1] = 65; 2852 (void)memset(&event[2], 0, 65); 2853 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2854 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2855 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2856 event[2] = 3; 2857 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2858 } else { 2859 event[2] = 1; 2860 } 2861 } 2862 hci_emit_event(event, sizeof(event), 0); 2863 break; 2864 } 2865 2866 // note: only needed if user does not provide OOB data 2867 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2868 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2869 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2870 if (conn == NULL) break; 2871 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2872 break; 2873 #endif 2874 #endif 2875 #ifdef ENABLE_BLE 2876 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2877 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2878 // lookup CIG 2879 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2880 if (cig != NULL){ 2881 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2882 uint8_t i = 0; 2883 if (status == ERROR_CODE_SUCCESS){ 2884 // assign CIS handles to pre-allocated CIS 2885 btstack_linked_list_iterator_t it; 2886 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2887 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2888 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2889 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2890 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2891 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2892 iso_stream->cis_handle = cis_handle; 2893 cig->cis_con_handles[i] = cis_handle; 2894 i++; 2895 } 2896 } 2897 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2898 hci_emit_cig_created(cig, status); 2899 } else { 2900 hci_emit_cig_created(cig, status); 2901 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2902 } 2903 } 2904 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2905 break; 2906 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2907 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2908 if (status != ERROR_CODE_SUCCESS){ 2909 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2910 } 2911 break; 2912 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2913 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2914 if (status != ERROR_CODE_SUCCESS){ 2915 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2916 } 2917 break; 2918 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2919 // lookup BIG by state 2920 btstack_linked_list_iterator_t it; 2921 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2922 while (btstack_linked_list_iterator_has_next(&it)) { 2923 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2924 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2925 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2926 if (status == ERROR_CODE_SUCCESS){ 2927 big->state_vars.next_bis++; 2928 if (big->state_vars.next_bis == big->num_bis){ 2929 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2930 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2931 } else { 2932 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2933 } 2934 } else { 2935 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2936 big->state_vars.status = status; 2937 } 2938 return; 2939 } 2940 } 2941 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2942 while (btstack_linked_list_iterator_has_next(&it)) { 2943 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2944 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2945 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2946 if (status == ERROR_CODE_SUCCESS){ 2947 big_sync->state_vars.next_bis++; 2948 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2949 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2950 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2951 } else { 2952 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2953 } 2954 } else { 2955 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2956 big_sync->state_vars.status = status; 2957 } 2958 return; 2959 } 2960 } 2961 // Lookup CIS via active group operation 2962 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2963 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2964 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2965 2966 // lookup CIS by state 2967 btstack_linked_list_iterator_t it; 2968 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2969 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2970 while (btstack_linked_list_iterator_has_next(&it)){ 2971 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2972 handle = iso_stream->cis_handle; 2973 bool emit_cis_created = false; 2974 switch (iso_stream->state){ 2975 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2976 if (status != ERROR_CODE_SUCCESS){ 2977 emit_cis_created = true; 2978 break; 2979 } 2980 if (iso_stream->max_sdu_c_to_p > 0){ 2981 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2982 } else { 2983 emit_cis_created = true; 2984 } 2985 break; 2986 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2987 emit_cis_created = true; 2988 break; 2989 default: 2990 break; 2991 } 2992 if (emit_cis_created){ 2993 hci_cis_handle_created(iso_stream, status); 2994 } 2995 } 2996 } else { 2997 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2998 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2999 if (cig != NULL) { 3000 // emit cis created if all ISO Paths have been created 3001 // assume we are central 3002 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3003 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3004 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3005 // if outgoing has been setup, or incoming was setup but outgoing not required 3006 if ((cis_direction == 1) || (outgoing_needed == false)){ 3007 // lookup iso stream by cig/cis 3008 while (btstack_linked_list_iterator_has_next(&it)) { 3009 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3010 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3011 hci_cis_handle_created(iso_stream, status); 3012 } 3013 } 3014 } 3015 // next state 3016 cig->state_vars.next_cis++; 3017 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3018 } 3019 } 3020 } 3021 break; 3022 } 3023 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3024 // lookup BIG by state 3025 btstack_linked_list_iterator_t it; 3026 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3027 while (btstack_linked_list_iterator_has_next(&it)) { 3028 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3029 uint8_t big_handle = big_sync->big_handle; 3030 switch (big_sync->state){ 3031 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3032 btstack_linked_list_iterator_remove(&it); 3033 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3034 return; 3035 default: 3036 btstack_linked_list_iterator_remove(&it); 3037 hci_emit_big_sync_stopped(big_handle); 3038 return; 3039 } 3040 } 3041 break; 3042 } 3043 #endif 3044 #endif 3045 default: 3046 break; 3047 } 3048 } 3049 3050 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3051 UNUSED(size); 3052 3053 // get num cmd packets - limit to 1 to reduce complexity 3054 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3055 3056 // get opcode and command status 3057 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3058 3059 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3060 uint8_t status = hci_event_command_status_get_status(packet); 3061 #endif 3062 3063 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3064 bd_addr_type_t addr_type; 3065 bd_addr_t addr; 3066 #endif 3067 3068 switch (opcode){ 3069 #ifdef ENABLE_CLASSIC 3070 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3071 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3072 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3073 #endif 3074 #ifdef ENABLE_LE_CENTRAL 3075 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3076 #endif 3077 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3078 addr_type = hci_stack->outgoing_addr_type; 3079 memcpy(addr, hci_stack->outgoing_addr, 6); 3080 3081 // reset outgoing address info 3082 memset(hci_stack->outgoing_addr, 0, 6); 3083 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3084 3085 // on error 3086 if (status != ERROR_CODE_SUCCESS){ 3087 #ifdef ENABLE_LE_CENTRAL 3088 if (hci_is_le_connection_type(addr_type)){ 3089 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3090 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3091 } 3092 #endif 3093 // error => outgoing connection failed 3094 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3095 if (conn != NULL){ 3096 hci_handle_connection_failed(conn, status); 3097 } 3098 } 3099 break; 3100 #endif 3101 #ifdef ENABLE_CLASSIC 3102 case HCI_OPCODE_HCI_INQUIRY: 3103 if (status == ERROR_CODE_SUCCESS) { 3104 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3105 } else { 3106 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3107 } 3108 break; 3109 #endif 3110 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3111 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3112 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3113 if (status == ERROR_CODE_SUCCESS){ 3114 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3115 } else { 3116 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3117 } 3118 break; 3119 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3120 default: 3121 break; 3122 } 3123 } 3124 3125 #ifdef ENABLE_BLE 3126 static void event_handle_le_connection_complete(const uint8_t * packet){ 3127 bd_addr_t addr; 3128 bd_addr_type_t addr_type; 3129 hci_connection_t * conn; 3130 3131 // read fields 3132 uint8_t status = packet[3]; 3133 uint8_t role = packet[6]; 3134 uint16_t conn_interval; 3135 3136 // support different connection complete events 3137 switch (packet[2]){ 3138 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3139 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3140 break; 3141 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3142 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3143 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3144 break; 3145 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3146 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3147 break; 3148 #endif 3149 default: 3150 btstack_unreachable(); 3151 return; 3152 } 3153 3154 // Connection management 3155 reverse_bd_addr(&packet[8], addr); 3156 addr_type = (bd_addr_type_t)packet[7]; 3157 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3158 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3159 3160 #ifdef ENABLE_LE_CENTRAL 3161 // handle error: error is reported only to the initiator -> outgoing connection 3162 if (status){ 3163 3164 // handle cancelled outgoing connection 3165 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3166 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3167 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3168 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3169 // reset state 3170 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3171 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3172 // get outgoing connection conn struct for direct connect 3173 conn = gap_get_outgoing_connection(); 3174 } 3175 3176 // outgoing le connection establishment is done 3177 if (conn){ 3178 // remove entry 3179 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3180 btstack_memory_hci_connection_free( conn ); 3181 } 3182 return; 3183 } 3184 #endif 3185 3186 // on success, both hosts receive connection complete event 3187 if (role == HCI_ROLE_MASTER){ 3188 #ifdef ENABLE_LE_CENTRAL 3189 // if we're master on an le connection, it was an outgoing connection and we're done with it 3190 // note: no hci_connection_t object exists yet for connect with whitelist 3191 if (hci_is_le_connection_type(addr_type)){ 3192 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3193 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3194 } 3195 #endif 3196 } else { 3197 #ifdef ENABLE_LE_PERIPHERAL 3198 // if we're slave, it was an incoming connection, advertisements have stopped 3199 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3200 #endif 3201 } 3202 3203 // LE connections are auto-accepted, so just create a connection if there isn't one already 3204 if (!conn){ 3205 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3206 } 3207 3208 // no memory, sorry. 3209 if (!conn){ 3210 return; 3211 } 3212 3213 conn->state = OPEN; 3214 conn->role = role; 3215 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3216 conn->le_connection_interval = conn_interval; 3217 3218 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3219 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3220 3221 #ifdef ENABLE_LE_PERIPHERAL 3222 if (role == HCI_ROLE_SLAVE){ 3223 hci_update_advertisements_enabled_for_current_roles(); 3224 } 3225 #endif 3226 3227 // init unenhanced att bearer mtu 3228 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3229 conn->att_connection.mtu_exchanged = false; 3230 3231 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3232 3233 // restart timer 3234 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3235 // btstack_run_loop_add_timer(&conn->timeout); 3236 3237 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3238 3239 hci_emit_nr_connections_changed(); 3240 } 3241 #endif 3242 3243 #ifdef ENABLE_CLASSIC 3244 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){ 3245 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3246 // LEVEL_4 is tested by l2cap 3247 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3248 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3249 if (level >= LEVEL_3){ 3250 // MITM not possible without keyboard or display 3251 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3252 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3253 3254 // MITM possible if one side has keyboard and the other has keyboard or display 3255 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3256 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3257 3258 // MITM not possible if one side has only display and other side has no keyboard 3259 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3260 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3261 } 3262 // LEVEL 2 requires SSP, which is a given 3263 return true; 3264 } 3265 3266 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3267 // get requested security level 3268 gap_security_level_t requested_security_level = conn->requested_security_level; 3269 if (hci_stack->gap_secure_connections_only_mode){ 3270 requested_security_level = LEVEL_4; 3271 } 3272 3273 // assess security: LEVEL 4 requires SC 3274 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3275 if ((requested_security_level == LEVEL_4) && 3276 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3277 !hci_remote_sc_enabled(conn)){ 3278 log_info("Level 4 required, but SC not supported -> abort"); 3279 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3280 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3281 return; 3282 } 3283 3284 // assess security based on io capabilities 3285 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3286 // responder: fully validate io caps of both sides as well as OOB data 3287 bool security_possible = false; 3288 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3289 3290 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3291 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3292 // so we merge the OOB data availability 3293 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3294 if (conn->classic_oob_c_192 != NULL){ 3295 have_oob_data |= 1; 3296 } 3297 if (conn->classic_oob_c_256 != NULL){ 3298 have_oob_data |= 2; 3299 } 3300 // for up to Level 3, either P-192 as well as P-256 will do 3301 // 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 3302 // if remote does not SC, we should not receive P-256 data either 3303 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3304 security_possible = true; 3305 } 3306 // for Level 4, P-256 is needed 3307 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3308 security_possible = true; 3309 } 3310 #endif 3311 3312 if (security_possible == false){ 3313 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3314 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3315 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3316 return; 3317 } 3318 } else { 3319 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3320 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3321 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3322 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3323 log_info("Level 3+ required, but no input/output -> abort"); 3324 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3325 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3326 return; 3327 } 3328 #endif 3329 #endif 3330 } 3331 3332 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3333 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3334 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3335 } else { 3336 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3337 } 3338 #endif 3339 } 3340 3341 #endif 3342 3343 static void event_handler(uint8_t *packet, uint16_t size){ 3344 3345 uint16_t event_length = packet[1]; 3346 3347 // assert packet is complete 3348 if (size != (event_length + 2u)){ 3349 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3350 return; 3351 } 3352 3353 hci_con_handle_t handle; 3354 hci_connection_t * conn; 3355 int i; 3356 3357 #ifdef ENABLE_CLASSIC 3358 hci_link_type_t link_type; 3359 bd_addr_t addr; 3360 bd_addr_type_t addr_type; 3361 #endif 3362 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3363 hci_iso_stream_t * iso_stream; 3364 le_audio_big_t * big; 3365 le_audio_big_sync_t * big_sync; 3366 #endif 3367 3368 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3369 3370 switch (hci_event_packet_get_type(packet)) { 3371 3372 case HCI_EVENT_COMMAND_COMPLETE: 3373 handle_command_complete_event(packet, size); 3374 break; 3375 3376 case HCI_EVENT_COMMAND_STATUS: 3377 handle_command_status_event(packet, size); 3378 break; 3379 3380 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3381 if (size < 3) return; 3382 uint16_t num_handles = packet[2]; 3383 if (size != (3u + num_handles * 4u)) return; 3384 #ifdef ENABLE_CLASSIC 3385 bool notify_sco = false; 3386 #endif 3387 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3388 bool notify_iso = false; 3389 #endif 3390 uint16_t offset = 3; 3391 for (i=0; i<num_handles;i++){ 3392 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3393 offset += 2u; 3394 uint16_t num_packets = little_endian_read_16(packet, offset); 3395 offset += 2u; 3396 3397 conn = hci_connection_for_handle(handle); 3398 if (conn != NULL) { 3399 3400 if (conn->num_packets_sent >= num_packets) { 3401 conn->num_packets_sent -= num_packets; 3402 } else { 3403 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3404 conn->num_packets_sent = 0; 3405 } 3406 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3407 #ifdef ENABLE_CLASSIC 3408 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3409 notify_sco = true; 3410 } 3411 #endif 3412 } 3413 3414 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3415 hci_controller_dump_packets(); 3416 #endif 3417 3418 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3419 if (conn == NULL){ 3420 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3421 if (iso_stream != NULL){ 3422 if (iso_stream->num_packets_sent >= num_packets) { 3423 iso_stream->num_packets_sent -= num_packets; 3424 } else { 3425 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3426 iso_stream->num_packets_sent = 0; 3427 } 3428 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3429 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3430 if (big != NULL){ 3431 big->num_completed_timestamp_current_valid = true; 3432 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3433 } 3434 } 3435 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3436 num_packets, handle, iso_stream->num_packets_sent); 3437 notify_iso = true; 3438 } 3439 } 3440 #endif 3441 } 3442 3443 #ifdef ENABLE_CLASSIC 3444 if (notify_sco){ 3445 hci_notify_if_sco_can_send_now(); 3446 } 3447 #endif 3448 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3449 if (notify_iso){ 3450 hci_iso_notify_can_send_now(); 3451 } 3452 #endif 3453 break; 3454 } 3455 3456 #ifdef ENABLE_CLASSIC 3457 case HCI_EVENT_FLUSH_OCCURRED: 3458 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3459 handle = hci_event_flush_occurred_get_handle(packet); 3460 conn = hci_connection_for_handle(handle); 3461 if (conn) { 3462 log_info("Flush occurred, disconnect 0x%04x", handle); 3463 conn->state = SEND_DISCONNECT; 3464 } 3465 break; 3466 3467 case HCI_EVENT_INQUIRY_COMPLETE: 3468 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3469 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3470 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3471 hci_emit_event(event, sizeof(event), 1); 3472 } 3473 break; 3474 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3475 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3476 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3477 } 3478 break; 3479 case HCI_EVENT_CONNECTION_REQUEST: 3480 reverse_bd_addr(&packet[2], addr); 3481 link_type = (hci_link_type_t) packet[11]; 3482 3483 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3484 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3485 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3486 bd_addr_copy(hci_stack->decline_addr, addr); 3487 break; 3488 } 3489 3490 if (hci_stack->gap_classic_accept_callback != NULL){ 3491 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3492 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3493 bd_addr_copy(hci_stack->decline_addr, addr); 3494 break; 3495 } 3496 } 3497 3498 // TODO: eval COD 8-10 3499 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3500 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3501 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3502 if (!conn) { 3503 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3504 } 3505 if (!conn) { 3506 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3507 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3508 bd_addr_copy(hci_stack->decline_addr, addr); 3509 hci_run(); 3510 // avoid event to higher layer 3511 return; 3512 } 3513 conn->role = HCI_ROLE_SLAVE; 3514 conn->state = RECEIVED_CONNECTION_REQUEST; 3515 // store info about eSCO 3516 if (link_type == HCI_LINK_TYPE_ESCO){ 3517 conn->remote_supported_features[0] |= 1; 3518 } 3519 hci_run(); 3520 break; 3521 3522 case HCI_EVENT_CONNECTION_COMPLETE: 3523 // Connection management 3524 reverse_bd_addr(&packet[5], addr); 3525 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3526 addr_type = BD_ADDR_TYPE_ACL; 3527 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3528 if (conn) { 3529 switch (conn->state){ 3530 // expected states 3531 case ACCEPTED_CONNECTION_REQUEST: 3532 case SENT_CREATE_CONNECTION: 3533 break; 3534 // unexpected state -> ignore 3535 default: 3536 // don't forward event to app 3537 return; 3538 } 3539 if (!packet[2]){ 3540 conn->state = OPEN; 3541 conn->con_handle = little_endian_read_16(packet, 3); 3542 3543 // trigger write supervision timeout if we're master 3544 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3545 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3546 } 3547 3548 // trigger write automatic flush timeout 3549 if (hci_stack->automatic_flush_timeout != 0){ 3550 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3551 } 3552 3553 // restart timer 3554 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3555 btstack_run_loop_add_timer(&conn->timeout); 3556 3557 // trigger remote features for dedicated bonding 3558 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3559 hci_trigger_remote_features_for_connection(conn); 3560 } 3561 3562 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3563 3564 hci_emit_nr_connections_changed(); 3565 } else { 3566 // connection failed 3567 hci_handle_connection_failed(conn, packet[2]); 3568 } 3569 } 3570 break; 3571 3572 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3573 reverse_bd_addr(&packet[5], addr); 3574 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3575 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3576 btstack_assert(conn != NULL); 3577 3578 if (packet[2] != ERROR_CODE_SUCCESS){ 3579 // connection failed, remove entry 3580 hci_handle_connection_failed(conn, packet[2]); 3581 break; 3582 } 3583 3584 conn->state = OPEN; 3585 conn->con_handle = little_endian_read_16(packet, 3); 3586 3587 #ifdef ENABLE_SCO_OVER_HCI 3588 // update SCO 3589 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3590 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3591 } 3592 // trigger can send now 3593 if (hci_have_usb_transport()){ 3594 hci_stack->sco_can_send_now = true; 3595 } 3596 #endif 3597 #ifdef HAVE_SCO_TRANSPORT 3598 // configure sco transport 3599 if (hci_stack->sco_transport != NULL){ 3600 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3601 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3602 } 3603 #endif 3604 break; 3605 3606 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3607 handle = little_endian_read_16(packet, 3); 3608 conn = hci_connection_for_handle(handle); 3609 if (!conn) break; 3610 if (!packet[2]){ 3611 const uint8_t * features = &packet[5]; 3612 hci_handle_remote_features_page_0(conn, features); 3613 3614 // read extended features if possible 3615 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3616 && ((conn->remote_supported_features[0] & 2) != 0)) { 3617 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3618 break; 3619 } 3620 } 3621 hci_handle_remote_features_received(conn); 3622 break; 3623 3624 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3625 handle = little_endian_read_16(packet, 3); 3626 conn = hci_connection_for_handle(handle); 3627 if (!conn) break; 3628 // status = ok, page = 1 3629 if (!packet[2]) { 3630 uint8_t page_number = packet[5]; 3631 uint8_t maximum_page_number = packet[6]; 3632 const uint8_t * features = &packet[7]; 3633 bool done = false; 3634 switch (page_number){ 3635 case 1: 3636 hci_handle_remote_features_page_1(conn, features); 3637 if (maximum_page_number >= 2){ 3638 // get Secure Connections (Controller) from Page 2 if available 3639 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3640 } else { 3641 // otherwise, assume SC (Controller) == SC (Host) 3642 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3643 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3644 } 3645 done = true; 3646 } 3647 break; 3648 case 2: 3649 hci_handle_remote_features_page_2(conn, features); 3650 done = true; 3651 break; 3652 default: 3653 break; 3654 } 3655 if (!done) break; 3656 } 3657 hci_handle_remote_features_received(conn); 3658 break; 3659 3660 case HCI_EVENT_LINK_KEY_REQUEST: 3661 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3662 hci_event_link_key_request_get_bd_addr(packet, addr); 3663 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3664 if (!conn) break; 3665 3666 // lookup link key in db if not cached 3667 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3668 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3669 } 3670 3671 // response sent by hci_run() 3672 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3673 #endif 3674 break; 3675 3676 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3677 hci_event_link_key_request_get_bd_addr(packet, addr); 3678 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3679 if (!conn) break; 3680 3681 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3682 3683 // CVE-2020-26555: ignore NULL link key 3684 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3685 if (btstack_is_null(&packet[8], 16)) break; 3686 3687 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3688 // Change Connection Encryption keeps link key type 3689 if (link_key_type != CHANGED_COMBINATION_KEY){ 3690 conn->link_key_type = link_key_type; 3691 } 3692 3693 // cache link key. link keys stored in little-endian format for legacy reasons 3694 memcpy(&conn->link_key, &packet[8], 16); 3695 3696 // only store link key: 3697 // - if bondable enabled 3698 if (hci_stack->bondable == false) break; 3699 // - if security level sufficient 3700 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3701 // - for SSP, also check if remote side requested bonding as well 3702 if (conn->link_key_type != COMBINATION_KEY){ 3703 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3704 if (!remote_bonding){ 3705 break; 3706 } 3707 } 3708 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3709 break; 3710 } 3711 3712 case HCI_EVENT_PIN_CODE_REQUEST: 3713 hci_event_pin_code_request_get_bd_addr(packet, addr); 3714 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3715 if (!conn) break; 3716 3717 hci_pairing_started(conn, false); 3718 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3719 if (!hci_stack->bondable ){ 3720 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3721 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3722 hci_run(); 3723 return; 3724 } 3725 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3726 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3727 log_info("Level 4 required, but SC not supported -> abort"); 3728 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3729 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3730 hci_run(); 3731 return; 3732 } 3733 break; 3734 3735 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3736 hci_event_io_capability_response_get_bd_addr(packet, addr); 3737 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3738 if (!conn) break; 3739 3740 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3741 hci_pairing_started(conn, true); 3742 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3743 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3744 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3745 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3746 #endif 3747 break; 3748 3749 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3750 hci_event_io_capability_response_get_bd_addr(packet, addr); 3751 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3752 if (!conn) break; 3753 3754 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3755 hci_connection_timestamp(conn); 3756 hci_pairing_started(conn, true); 3757 break; 3758 3759 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3760 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3761 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3762 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3763 if (!conn) break; 3764 3765 hci_connection_timestamp(conn); 3766 3767 hci_pairing_started(conn, true); 3768 3769 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3770 break; 3771 #endif 3772 3773 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3774 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3775 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3776 if (!conn) break; 3777 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3778 if (hci_stack->ssp_auto_accept){ 3779 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3780 }; 3781 } else { 3782 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3783 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3784 // don't forward event to app 3785 hci_run(); 3786 return; 3787 } 3788 break; 3789 3790 case HCI_EVENT_USER_PASSKEY_REQUEST: 3791 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3792 if (hci_stack->ssp_auto_accept){ 3793 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3794 }; 3795 break; 3796 3797 case HCI_EVENT_MODE_CHANGE: 3798 handle = hci_event_mode_change_get_handle(packet); 3799 conn = hci_connection_for_handle(handle); 3800 if (!conn) break; 3801 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3802 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3803 break; 3804 #endif 3805 3806 case HCI_EVENT_ENCRYPTION_CHANGE: 3807 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3808 handle = hci_event_encryption_change_get_connection_handle(packet); 3809 conn = hci_connection_for_handle(handle); 3810 if (!conn) break; 3811 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3812 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3813 if (encryption_enabled){ 3814 if (hci_is_le_connection(conn)){ 3815 // For LE, we accept connection as encrypted 3816 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3817 } 3818 #ifdef ENABLE_CLASSIC 3819 else { 3820 3821 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3822 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3823 bool connected_uses_aes_ccm = encryption_enabled == 2; 3824 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3825 log_info("SC during pairing, but only E0 now -> abort"); 3826 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3827 break; 3828 } 3829 3830 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3831 if (connected_uses_aes_ccm){ 3832 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3833 } 3834 3835 #ifdef ENABLE_TESTING_SUPPORT 3836 // work around for issue with PTS dongle 3837 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3838 #endif 3839 // validate encryption key size 3840 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3841 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3842 // already got encryption key size 3843 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3844 } else { 3845 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3846 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3847 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3848 } else { 3849 // if not, pretend everything is perfect 3850 hci_handle_read_encryption_key_size_complete(conn, 16); 3851 } 3852 } 3853 } 3854 #endif 3855 } else { 3856 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3857 } 3858 } else { 3859 uint8_t status = hci_event_encryption_change_get_status(packet); 3860 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3861 conn->bonding_flags &= ~BONDING_DEDICATED; 3862 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3863 conn->bonding_status = status; 3864 } 3865 } 3866 3867 break; 3868 3869 #ifdef ENABLE_CLASSIC 3870 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3871 handle = hci_event_authentication_complete_get_connection_handle(packet); 3872 conn = hci_connection_for_handle(handle); 3873 if (!conn) break; 3874 3875 // clear authentication active flag 3876 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3877 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3878 3879 // authenticated only if auth status == 0 3880 if (hci_event_authentication_complete_get_status(packet) == 0){ 3881 // authenticated 3882 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3883 3884 // If not already encrypted, start encryption 3885 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3886 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3887 break; 3888 } 3889 } 3890 3891 // emit updated security level 3892 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3893 break; 3894 3895 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3896 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3897 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3898 if (!conn) break; 3899 3900 // treat successfully paired connection as authenticated 3901 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3902 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3903 } 3904 3905 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3906 break; 3907 #endif 3908 3909 // HCI_EVENT_DISCONNECTION_COMPLETE 3910 // has been split, to first notify stack before shutting connection down 3911 // see end of function, too. 3912 case HCI_EVENT_DISCONNECTION_COMPLETE: 3913 if (packet[2]) break; // status != 0 3914 handle = little_endian_read_16(packet, 3); 3915 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3916 if (hci_stack->acl_fragmentation_total_size > 0u) { 3917 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3918 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3919 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3920 hci_stack->acl_fragmentation_total_size = 0; 3921 hci_stack->acl_fragmentation_pos = 0; 3922 if (release_buffer){ 3923 hci_release_packet_buffer(); 3924 } 3925 } 3926 } 3927 3928 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3929 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3930 if (hci_stack->iso_fragmentation_total_size > 0u) { 3931 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3932 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3933 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3934 hci_stack->iso_fragmentation_total_size = 0; 3935 hci_stack->iso_fragmentation_pos = 0; 3936 if (release_buffer){ 3937 hci_release_packet_buffer(); 3938 } 3939 } 3940 } 3941 3942 // finalize iso stream for CIS handle 3943 iso_stream = hci_iso_stream_for_con_handle(handle); 3944 if (iso_stream != NULL){ 3945 hci_iso_stream_finalize(iso_stream); 3946 break; 3947 } 3948 3949 // finalize iso stream(s) for ACL handle 3950 btstack_linked_list_iterator_t it; 3951 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3952 while (btstack_linked_list_iterator_has_next(&it)){ 3953 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3954 if (iso_stream->acl_handle == handle ) { 3955 hci_iso_stream_finalize(iso_stream); 3956 } 3957 } 3958 #endif 3959 3960 conn = hci_connection_for_handle(handle); 3961 if (!conn) break; 3962 #ifdef ENABLE_CLASSIC 3963 // pairing failed if it was ongoing 3964 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3965 #endif 3966 3967 // emit dedicatd bonding event 3968 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3969 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3970 } 3971 3972 // mark connection for shutdown, stop timers, reset state 3973 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3974 hci_connection_stop_timer(conn); 3975 hci_connection_init(conn); 3976 3977 #ifdef ENABLE_BLE 3978 #ifdef ENABLE_LE_PERIPHERAL 3979 // re-enable advertisements for le connections if active 3980 if (hci_is_le_connection(conn)){ 3981 hci_update_advertisements_enabled_for_current_roles(); 3982 } 3983 #endif 3984 #endif 3985 break; 3986 3987 case HCI_EVENT_HARDWARE_ERROR: 3988 log_error("Hardware Error: 0x%02x", packet[2]); 3989 if (hci_stack->hardware_error_callback){ 3990 (*hci_stack->hardware_error_callback)(packet[2]); 3991 } else { 3992 // if no special requests, just reboot stack 3993 hci_power_control_off(); 3994 hci_power_control_on(); 3995 } 3996 break; 3997 3998 #ifdef ENABLE_CLASSIC 3999 case HCI_EVENT_ROLE_CHANGE: 4000 if (packet[2]) break; // status != 0 4001 reverse_bd_addr(&packet[3], addr); 4002 addr_type = BD_ADDR_TYPE_ACL; 4003 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4004 if (!conn) break; 4005 conn->role = packet[9]; 4006 break; 4007 #endif 4008 4009 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4010 // release packet buffer only for asynchronous transport and if there are not further fragments 4011 if (hci_transport_synchronous()) { 4012 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4013 return; // instead of break: to avoid re-entering hci_run() 4014 } 4015 hci_stack->acl_fragmentation_tx_active = 0; 4016 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4017 hci_stack->iso_fragmentation_tx_active = 0; 4018 if (hci_stack->iso_fragmentation_total_size) break; 4019 #endif 4020 if (hci_stack->acl_fragmentation_total_size) break; 4021 hci_release_packet_buffer(); 4022 4023 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4024 hci_iso_notify_can_send_now(); 4025 #endif 4026 // L2CAP receives this event via the hci_emit_event below 4027 4028 #ifdef ENABLE_CLASSIC 4029 // For SCO, we do the can_send_now_check here 4030 hci_notify_if_sco_can_send_now(); 4031 #endif 4032 break; 4033 4034 #ifdef ENABLE_CLASSIC 4035 case HCI_EVENT_SCO_CAN_SEND_NOW: 4036 // For SCO, we do the can_send_now_check here 4037 hci_stack->sco_can_send_now = true; 4038 hci_notify_if_sco_can_send_now(); 4039 return; 4040 4041 // explode inquriy results for easier consumption 4042 case HCI_EVENT_INQUIRY_RESULT: 4043 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4044 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4045 gap_inquiry_explode(packet, size); 4046 break; 4047 #endif 4048 4049 #ifdef ENABLE_BLE 4050 case HCI_EVENT_LE_META: 4051 switch (packet[2]){ 4052 #ifdef ENABLE_LE_CENTRAL 4053 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4054 if (!hci_stack->le_scanning_enabled) break; 4055 le_handle_advertisement_report(packet, size); 4056 break; 4057 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4058 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4059 if (!hci_stack->le_scanning_enabled) break; 4060 le_handle_extended_advertisement_report(packet, size); 4061 break; 4062 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4063 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4064 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4065 break; 4066 #endif 4067 #endif 4068 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4069 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4070 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4071 event_handle_le_connection_complete(packet); 4072 break; 4073 4074 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4075 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4076 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4077 conn = hci_connection_for_handle(handle); 4078 if (!conn) break; 4079 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4080 break; 4081 4082 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4083 // connection 4084 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4085 conn = hci_connection_for_handle(handle); 4086 if (conn) { 4087 // read arguments 4088 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4089 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4090 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4091 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4092 4093 // validate against current connection parameter range 4094 le_connection_parameter_range_t existing_range; 4095 gap_get_connection_parameter_range(&existing_range); 4096 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4097 if (update_parameter){ 4098 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4099 conn->le_conn_interval_min = le_conn_interval_min; 4100 conn->le_conn_interval_max = le_conn_interval_max; 4101 conn->le_conn_latency = le_conn_latency; 4102 conn->le_supervision_timeout = le_supervision_timeout; 4103 } else { 4104 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4105 } 4106 } 4107 break; 4108 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4109 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4110 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4111 conn = hci_connection_for_handle(handle); 4112 if (conn) { 4113 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4114 } 4115 break; 4116 #endif 4117 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4118 case HCI_SUBEVENT_LE_CIS_REQUEST: 4119 // incoming CIS request, allocate iso stream object and cache metadata 4120 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4121 hci_subevent_le_cis_request_get_cig_id(packet), 4122 hci_subevent_le_cis_request_get_cis_id(packet)); 4123 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4124 if (iso_stream != NULL){ 4125 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4126 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4127 } 4128 break; 4129 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4130 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4131 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4132 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4133 iso_stream = hci_iso_stream_for_con_handle(handle); 4134 btstack_assert(iso_stream != NULL); 4135 // track SDU 4136 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4137 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4138 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4139 // CIS Accept by Peripheral 4140 if (status == ERROR_CODE_SUCCESS){ 4141 if (iso_stream->max_sdu_p_to_c > 0){ 4142 // we're peripheral and we will send data 4143 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4144 } else { 4145 // we're peripheral and we will only receive data 4146 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4147 } 4148 } else { 4149 hci_cis_handle_created(iso_stream, status); 4150 } 4151 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4152 } else { 4153 // CIG Setup by Central 4154 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4155 btstack_assert(cig != NULL); 4156 // update iso stream state 4157 if (status == ERROR_CODE_SUCCESS){ 4158 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4159 } else { 4160 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4161 } 4162 // update cig state 4163 uint8_t i; 4164 for (i=0;i<cig->num_cis;i++){ 4165 if (cig->cis_con_handles[i] == handle){ 4166 cig->cis_setup_active[i] = false; 4167 if (status == ERROR_CODE_SUCCESS){ 4168 cig->cis_established[i] = true; 4169 } else { 4170 hci_cis_handle_created(iso_stream, status); 4171 } 4172 } 4173 } 4174 4175 // trigger iso path setup if complete 4176 bool cis_setup_active = false; 4177 for (i=0;i<cig->num_cis;i++){ 4178 cis_setup_active |= cig->cis_setup_active[i]; 4179 } 4180 if (cis_setup_active == false){ 4181 cig->state_vars.next_cis = 0; 4182 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4183 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4184 } 4185 } 4186 } 4187 break; 4188 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4189 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4190 big = hci_big_for_handle(packet[4]); 4191 if (big != NULL){ 4192 uint8_t status = packet[3]; 4193 if (status == ERROR_CODE_SUCCESS){ 4194 // store bis_con_handles and trigger iso path setup 4195 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4196 uint8_t i; 4197 for (i=0;i<num_bis;i++){ 4198 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4199 big->bis_con_handles[i] = bis_handle; 4200 // assign bis handle 4201 btstack_linked_list_iterator_t it; 4202 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4203 while (btstack_linked_list_iterator_has_next(&it)){ 4204 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4205 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4206 (iso_stream->group_id == big->big_handle)){ 4207 iso_stream->cis_handle = bis_handle; 4208 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4209 break; 4210 } 4211 } 4212 } 4213 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4214 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4215 big->state_vars.next_bis = 0; 4216 } 4217 } else { 4218 // create BIG failed or has been stopped by us 4219 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4220 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4221 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4222 hci_emit_big_created(big, status); 4223 } else { 4224 hci_emit_big_terminated(big); 4225 } 4226 } 4227 } 4228 break; 4229 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4230 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4231 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4232 if (big != NULL){ 4233 // finalize associated ISO streams 4234 btstack_linked_list_iterator_t it; 4235 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4236 while (btstack_linked_list_iterator_has_next(&it)){ 4237 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4238 if (iso_stream->group_id == big->big_handle){ 4239 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4240 btstack_linked_list_iterator_remove(&it); 4241 btstack_memory_hci_iso_stream_free(iso_stream); 4242 } 4243 } 4244 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4245 switch (big->state){ 4246 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4247 hci_emit_big_created(big, big->state_vars.status); 4248 break; 4249 default: 4250 hci_emit_big_terminated(big); 4251 break; 4252 } 4253 } 4254 break; 4255 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4256 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4257 big_sync = hci_big_sync_for_handle(packet[4]); 4258 if (big_sync != NULL){ 4259 uint8_t status = packet[3]; 4260 uint8_t big_handle = packet[4]; 4261 if (status == ERROR_CODE_SUCCESS){ 4262 // store bis_con_handles and trigger iso path setup 4263 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4264 uint8_t i; 4265 for (i=0;i<num_bis;i++){ 4266 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4267 } 4268 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4269 // trigger iso path setup 4270 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4271 big_sync->state_vars.next_bis = 0; 4272 } 4273 } else { 4274 // create BIG Sync failed or has been stopped by us 4275 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4276 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4277 hci_emit_big_sync_created(big_sync, status); 4278 } else { 4279 hci_emit_big_sync_stopped(big_handle); 4280 } 4281 } 4282 } 4283 break; 4284 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4285 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4286 big_sync = hci_big_sync_for_handle(packet[4]); 4287 if (big_sync != NULL){ 4288 uint8_t big_handle = packet[4]; 4289 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4290 hci_emit_big_sync_stopped(big_handle); 4291 } 4292 break; 4293 #endif 4294 default: 4295 break; 4296 } 4297 break; 4298 #endif 4299 case HCI_EVENT_VENDOR_SPECIFIC: 4300 // Vendor specific commands often create vendor specific event instead of num completed packets 4301 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4302 switch (hci_stack->manufacturer){ 4303 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4304 hci_stack->num_cmd_packets = 1; 4305 break; 4306 default: 4307 break; 4308 } 4309 break; 4310 default: 4311 break; 4312 } 4313 4314 handle_event_for_current_stack_state(packet, size); 4315 4316 // notify upper stack 4317 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4318 4319 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4320 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4321 handle = little_endian_read_16(packet, 3); 4322 hci_connection_t * aConn = hci_connection_for_handle(handle); 4323 // discard connection if app did not trigger a reconnect in the event handler 4324 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4325 hci_shutdown_connection(aConn); 4326 } 4327 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4328 hci_controller_dump_packets(); 4329 #endif 4330 } 4331 4332 // execute main loop 4333 hci_run(); 4334 } 4335 4336 #ifdef ENABLE_CLASSIC 4337 4338 #ifdef ENABLE_SCO_OVER_HCI 4339 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4340 static void sco_schedule_tx(hci_connection_t * conn); 4341 4342 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4343 log_debug("SCO TX Timeout"); 4344 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4345 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4346 if (!conn) return; 4347 4348 // trigger send 4349 conn->sco_tx_ready = 1; 4350 // extra packet if CVSD but SCO buffer is too short 4351 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4352 conn->sco_tx_ready++; 4353 } 4354 hci_notify_if_sco_can_send_now(); 4355 } 4356 4357 4358 #define SCO_TX_AFTER_RX_MS (6) 4359 4360 static void sco_schedule_tx(hci_connection_t * conn){ 4361 4362 uint32_t now = btstack_run_loop_get_time_ms(); 4363 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4364 int time_delta_ms = sco_tx_ms - now; 4365 4366 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4367 4368 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4369 btstack_run_loop_remove_timer(timer); 4370 btstack_run_loop_set_timer(timer, time_delta_ms); 4371 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4372 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4373 btstack_run_loop_add_timer(timer); 4374 } 4375 #endif 4376 4377 static void sco_handler(uint8_t * packet, uint16_t size){ 4378 // lookup connection struct 4379 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4380 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4381 if (!conn) return; 4382 4383 #ifdef ENABLE_SCO_OVER_HCI 4384 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4385 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4386 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4387 packet[2] = 0x3c; 4388 memmove(&packet[3], &packet[23], 63); 4389 size = 63; 4390 } 4391 } 4392 4393 if (hci_have_usb_transport()){ 4394 // Nothing to do 4395 } else { 4396 // 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); 4397 if (hci_stack->synchronous_flow_control_enabled == 0){ 4398 uint32_t now = btstack_run_loop_get_time_ms(); 4399 4400 if (!conn->sco_rx_valid){ 4401 // ignore first 10 packets 4402 conn->sco_rx_count++; 4403 // log_debug("sco rx count %u", conn->sco_rx_count); 4404 if (conn->sco_rx_count == 10) { 4405 // use first timestamp as is and pretent it just started 4406 conn->sco_rx_ms = now; 4407 conn->sco_rx_valid = 1; 4408 conn->sco_rx_count = 0; 4409 sco_schedule_tx(conn); 4410 } 4411 } else { 4412 // track expected arrival timme 4413 conn->sco_rx_count++; 4414 conn->sco_rx_ms += 7; 4415 int delta = (int32_t) (now - conn->sco_rx_ms); 4416 if (delta > 0){ 4417 conn->sco_rx_ms++; 4418 } 4419 // log_debug("sco rx %u", conn->sco_rx_ms); 4420 sco_schedule_tx(conn); 4421 } 4422 } 4423 } 4424 #endif 4425 4426 // deliver to app 4427 if (hci_stack->sco_packet_handler) { 4428 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4429 } 4430 4431 #ifdef HAVE_SCO_TRANSPORT 4432 // We can send one packet for each received packet 4433 conn->sco_tx_ready++; 4434 hci_notify_if_sco_can_send_now(); 4435 #endif 4436 4437 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4438 conn->num_packets_completed++; 4439 hci_stack->host_completed_packets = 1; 4440 hci_run(); 4441 #endif 4442 } 4443 #endif 4444 4445 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4446 hci_dump_packet(packet_type, 1, packet, size); 4447 switch (packet_type) { 4448 case HCI_EVENT_PACKET: 4449 event_handler(packet, size); 4450 break; 4451 case HCI_ACL_DATA_PACKET: 4452 acl_handler(packet, size); 4453 break; 4454 #ifdef ENABLE_CLASSIC 4455 case HCI_SCO_DATA_PACKET: 4456 sco_handler(packet, size); 4457 break; 4458 #endif 4459 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4460 case HCI_ISO_DATA_PACKET: 4461 hci_iso_packet_handler(packet, size); 4462 break; 4463 #endif 4464 default: 4465 break; 4466 } 4467 } 4468 4469 /** 4470 * @brief Add event packet handler. 4471 */ 4472 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4473 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4474 } 4475 4476 /** 4477 * @brief Remove event packet handler. 4478 */ 4479 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4480 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4481 } 4482 4483 /** Register HCI packet handlers */ 4484 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4485 hci_stack->acl_packet_handler = handler; 4486 } 4487 4488 #ifdef ENABLE_CLASSIC 4489 /** 4490 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4491 */ 4492 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4493 hci_stack->sco_packet_handler = handler; 4494 } 4495 #endif 4496 4497 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4498 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4499 hci_stack->iso_packet_handler = handler; 4500 } 4501 #endif 4502 4503 static void hci_state_reset(void){ 4504 // no connections yet 4505 hci_stack->connections = NULL; 4506 4507 // keep discoverable/connectable as this has been requested by the client(s) 4508 // hci_stack->discoverable = 0; 4509 // hci_stack->connectable = 0; 4510 // hci_stack->bondable = 1; 4511 // hci_stack->own_addr_type = 0; 4512 4513 // buffer is free 4514 hci_stack->hci_packet_buffer_reserved = false; 4515 4516 // no pending cmds 4517 hci_stack->decline_reason = 0; 4518 4519 hci_stack->secure_connections_active = false; 4520 4521 #ifdef ENABLE_CLASSIC 4522 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4523 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4524 4525 hci_stack->gap_tasks_classic = 4526 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4527 GAP_TASK_SET_CLASS_OF_DEVICE | 4528 GAP_TASK_SET_LOCAL_NAME | 4529 GAP_TASK_SET_EIR_DATA | 4530 GAP_TASK_WRITE_SCAN_ENABLE | 4531 GAP_TASK_WRITE_PAGE_TIMEOUT; 4532 #endif 4533 4534 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4535 hci_stack->classic_read_local_oob_data = false; 4536 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4537 #endif 4538 4539 // LE 4540 #ifdef ENABLE_BLE 4541 memset(hci_stack->le_random_address, 0, 6); 4542 hci_stack->le_random_address_set = 0; 4543 #endif 4544 #ifdef ENABLE_LE_CENTRAL 4545 hci_stack->le_scanning_active = false; 4546 hci_stack->le_scanning_param_update = true; 4547 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4548 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4549 hci_stack->le_whitelist_capacity = 0; 4550 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4551 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4552 #endif 4553 #endif 4554 #ifdef ENABLE_LE_PERIPHERAL 4555 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4556 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4557 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4558 } 4559 if (hci_stack->le_advertisements_data != NULL){ 4560 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4561 } 4562 #endif 4563 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4564 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4565 #endif 4566 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4567 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4568 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4569 #endif 4570 } 4571 4572 #ifdef ENABLE_CLASSIC 4573 /** 4574 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4575 */ 4576 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4577 // store and open remote device db 4578 hci_stack->link_key_db = link_key_db; 4579 if (hci_stack->link_key_db) { 4580 hci_stack->link_key_db->open(); 4581 } 4582 } 4583 #endif 4584 4585 void hci_init(const hci_transport_t *transport, const void *config){ 4586 4587 #ifdef HAVE_MALLOC 4588 if (!hci_stack) { 4589 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4590 } 4591 #else 4592 hci_stack = &hci_stack_static; 4593 #endif 4594 memset(hci_stack, 0, sizeof(hci_stack_t)); 4595 4596 // reference to use transport layer implementation 4597 hci_stack->hci_transport = transport; 4598 4599 // reference to used config 4600 hci_stack->config = config; 4601 4602 // setup pointer for outgoing packet buffer 4603 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4604 4605 // max acl payload size defined in config.h 4606 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4607 4608 // register packet handlers with transport 4609 transport->register_packet_handler(&packet_handler); 4610 4611 hci_stack->state = HCI_STATE_OFF; 4612 4613 // class of device 4614 hci_stack->class_of_device = 0x007a020c; // Smartphone 4615 4616 // bondable by default 4617 hci_stack->bondable = 1; 4618 4619 #ifdef ENABLE_CLASSIC 4620 // classic name 4621 hci_stack->local_name = default_classic_name; 4622 4623 // Master slave policy 4624 hci_stack->master_slave_policy = 1; 4625 4626 // Allow Role Switch 4627 hci_stack->allow_role_switch = 1; 4628 4629 // Default / minimum security level = 2 4630 hci_stack->gap_security_level = LEVEL_2; 4631 4632 // Default Security Mode 4 4633 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4634 4635 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4636 hci_stack->gap_required_encyrption_key_size = 7; 4637 4638 // Link Supervision Timeout 4639 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4640 4641 #endif 4642 4643 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4644 hci_stack->ssp_enable = 1; 4645 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4646 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4647 hci_stack->ssp_auto_accept = 1; 4648 4649 // Secure Connections: enable (requires support from Controller) 4650 hci_stack->secure_connections_enable = true; 4651 4652 // voice setting - signed 16 bit pcm data with CVSD over the air 4653 hci_stack->sco_voice_setting = 0x60; 4654 4655 #ifdef ENABLE_LE_CENTRAL 4656 // connection parameter to use for outgoing connections 4657 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4658 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4659 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4660 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4661 hci_stack->le_connection_latency = 4; // 4 4662 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4663 hci_stack->le_minimum_ce_length = 0; // 0 ms 4664 hci_stack->le_maximum_ce_length = 0; // 0 ms 4665 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4666 4667 // default LE Scanning 4668 hci_stack->le_scan_type = 0x01; // active 4669 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4670 hci_stack->le_scan_window = 0x30; // 30 ms 4671 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4672 #endif 4673 4674 #ifdef ENABLE_LE_PERIPHERAL 4675 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4676 4677 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4678 hci_stack->le_advertisements_interval_min = 0x0800; 4679 hci_stack->le_advertisements_interval_max = 0x0800; 4680 hci_stack->le_advertisements_type = 0; 4681 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4682 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4683 hci_stack->le_advertisements_channel_map = 0x07; 4684 hci_stack->le_advertisements_filter_policy = 0; 4685 #endif 4686 4687 // connection parameter range used to answer connection parameter update requests in l2cap 4688 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4689 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4690 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4691 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4692 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4693 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4694 4695 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4696 hci_stack->iso_packets_to_queue = 1; 4697 #endif 4698 4699 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4700 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4701 #endif 4702 4703 hci_state_reset(); 4704 } 4705 4706 void hci_deinit(void){ 4707 btstack_run_loop_remove_timer(&hci_stack->timeout); 4708 #ifdef HAVE_MALLOC 4709 if (hci_stack) { 4710 free(hci_stack); 4711 } 4712 #endif 4713 hci_stack = NULL; 4714 4715 #ifdef ENABLE_CLASSIC 4716 disable_l2cap_timeouts = 0; 4717 #endif 4718 } 4719 4720 /** 4721 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4722 */ 4723 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4724 hci_stack->chipset = chipset_driver; 4725 4726 // reset chipset driver - init is also called on power_up 4727 if (hci_stack->chipset && hci_stack->chipset->init){ 4728 hci_stack->chipset->init(hci_stack->config); 4729 } 4730 } 4731 4732 void hci_enable_custom_pre_init(void){ 4733 hci_stack->chipset_pre_init = true; 4734 } 4735 4736 /** 4737 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4738 */ 4739 void hci_set_control(const btstack_control_t *hardware_control){ 4740 // references to used control implementation 4741 hci_stack->control = hardware_control; 4742 // init with transport config 4743 hardware_control->init(hci_stack->config); 4744 } 4745 4746 static void hci_discard_connections(void){ 4747 btstack_linked_list_iterator_t it; 4748 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4749 while (btstack_linked_list_iterator_has_next(&it)){ 4750 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4751 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4752 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4753 hci_shutdown_connection(connection); 4754 } 4755 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4756 while (hci_stack->iso_streams != NULL){ 4757 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4758 } 4759 #endif 4760 } 4761 4762 void hci_close(void){ 4763 4764 #ifdef ENABLE_CLASSIC 4765 // close remote device db 4766 if (hci_stack->link_key_db) { 4767 hci_stack->link_key_db->close(); 4768 } 4769 #endif 4770 4771 hci_discard_connections(); 4772 4773 hci_power_control(HCI_POWER_OFF); 4774 4775 #ifdef HAVE_MALLOC 4776 free(hci_stack); 4777 #endif 4778 hci_stack = NULL; 4779 } 4780 4781 #ifdef HAVE_SCO_TRANSPORT 4782 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4783 hci_stack->sco_transport = sco_transport; 4784 sco_transport->register_packet_handler(&packet_handler); 4785 } 4786 #endif 4787 4788 #ifdef ENABLE_CLASSIC 4789 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4790 // validate ranage and set 4791 if (encryption_key_size < 7) return; 4792 if (encryption_key_size > 16) return; 4793 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4794 } 4795 4796 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4797 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4798 hci_stack->gap_security_mode = security_mode; 4799 return ERROR_CODE_SUCCESS; 4800 } else { 4801 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4802 } 4803 } 4804 4805 gap_security_mode_t gap_get_security_mode(void){ 4806 return hci_stack->gap_security_mode; 4807 } 4808 4809 void gap_set_security_level(gap_security_level_t security_level){ 4810 hci_stack->gap_security_level = security_level; 4811 } 4812 4813 gap_security_level_t gap_get_security_level(void){ 4814 if (hci_stack->gap_secure_connections_only_mode){ 4815 return LEVEL_4; 4816 } 4817 return hci_stack->gap_security_level; 4818 } 4819 4820 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4821 hci_stack->gap_minimal_service_security_level = security_level; 4822 } 4823 4824 void gap_set_secure_connections_only_mode(bool enable){ 4825 hci_stack->gap_secure_connections_only_mode = enable; 4826 } 4827 4828 bool gap_get_secure_connections_only_mode(void){ 4829 return hci_stack->gap_secure_connections_only_mode; 4830 } 4831 #endif 4832 4833 #ifdef ENABLE_CLASSIC 4834 void gap_set_class_of_device(uint32_t class_of_device){ 4835 hci_stack->class_of_device = class_of_device; 4836 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4837 hci_run(); 4838 } 4839 4840 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4841 hci_stack->default_link_policy_settings = default_link_policy_settings; 4842 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4843 hci_run(); 4844 } 4845 4846 void gap_set_allow_role_switch(bool allow_role_switch){ 4847 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4848 } 4849 4850 uint8_t hci_get_allow_role_switch(void){ 4851 return hci_stack->allow_role_switch; 4852 } 4853 4854 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4855 hci_stack->link_supervision_timeout = link_supervision_timeout; 4856 } 4857 4858 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4859 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4860 } 4861 4862 uint16_t hci_automatic_flush_timeout(void){ 4863 return hci_stack->automatic_flush_timeout; 4864 } 4865 4866 void hci_disable_l2cap_timeout_check(void){ 4867 disable_l2cap_timeouts = 1; 4868 } 4869 #endif 4870 4871 #ifndef HAVE_HOST_CONTROLLER_API 4872 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4873 void hci_set_bd_addr(bd_addr_t addr){ 4874 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4875 hci_stack->custom_bd_addr_set = 1; 4876 } 4877 #endif 4878 4879 // State-Module-Driver overview 4880 // state module low-level 4881 // HCI_STATE_OFF off close 4882 // HCI_STATE_INITIALIZING, on open 4883 // HCI_STATE_WORKING, on open 4884 // HCI_STATE_HALTING, on open 4885 // HCI_STATE_SLEEPING, off/sleep close 4886 // HCI_STATE_FALLING_ASLEEP on open 4887 4888 static int hci_power_control_on(void){ 4889 4890 // power on 4891 int err = 0; 4892 if (hci_stack->control && hci_stack->control->on){ 4893 err = (*hci_stack->control->on)(); 4894 } 4895 if (err){ 4896 log_error( "POWER_ON failed"); 4897 hci_emit_hci_open_failed(); 4898 return err; 4899 } 4900 4901 // int chipset driver 4902 if (hci_stack->chipset && hci_stack->chipset->init){ 4903 hci_stack->chipset->init(hci_stack->config); 4904 } 4905 4906 // init transport 4907 if (hci_stack->hci_transport->init){ 4908 hci_stack->hci_transport->init(hci_stack->config); 4909 } 4910 4911 // open transport 4912 err = hci_stack->hci_transport->open(); 4913 if (err){ 4914 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4915 if (hci_stack->control && hci_stack->control->off){ 4916 (*hci_stack->control->off)(); 4917 } 4918 hci_emit_hci_open_failed(); 4919 return err; 4920 } 4921 return 0; 4922 } 4923 4924 static void hci_power_control_off(void){ 4925 4926 log_info("hci_power_control_off"); 4927 4928 // close low-level device 4929 hci_stack->hci_transport->close(); 4930 4931 log_info("hci_power_control_off - hci_transport closed"); 4932 4933 // power off 4934 if (hci_stack->control && hci_stack->control->off){ 4935 (*hci_stack->control->off)(); 4936 } 4937 4938 log_info("hci_power_control_off - control closed"); 4939 4940 hci_stack->state = HCI_STATE_OFF; 4941 } 4942 4943 static void hci_power_control_sleep(void){ 4944 4945 log_info("hci_power_control_sleep"); 4946 4947 #if 0 4948 // don't close serial port during sleep 4949 4950 // close low-level device 4951 hci_stack->hci_transport->close(hci_stack->config); 4952 #endif 4953 4954 // sleep mode 4955 if (hci_stack->control && hci_stack->control->sleep){ 4956 (*hci_stack->control->sleep)(); 4957 } 4958 4959 hci_stack->state = HCI_STATE_SLEEPING; 4960 } 4961 4962 static int hci_power_control_wake(void){ 4963 4964 log_info("hci_power_control_wake"); 4965 4966 // wake on 4967 if (hci_stack->control && hci_stack->control->wake){ 4968 (*hci_stack->control->wake)(); 4969 } 4970 4971 #if 0 4972 // open low-level device 4973 int err = hci_stack->hci_transport->open(hci_stack->config); 4974 if (err){ 4975 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4976 if (hci_stack->control && hci_stack->control->off){ 4977 (*hci_stack->control->off)(); 4978 } 4979 hci_emit_hci_open_failed(); 4980 return err; 4981 } 4982 #endif 4983 4984 return 0; 4985 } 4986 4987 static void hci_power_enter_initializing_state(void){ 4988 // set up state machine 4989 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4990 hci_stack->hci_packet_buffer_reserved = false; 4991 hci_stack->state = HCI_STATE_INITIALIZING; 4992 4993 if (hci_stack->chipset_pre_init) { 4994 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 4995 } else { 4996 hci_stack->substate = HCI_INIT_SEND_RESET; 4997 } 4998 } 4999 5000 static void hci_power_enter_halting_state(void){ 5001 #ifdef ENABLE_BLE 5002 // drop entries scheduled for removal, mark others for re-adding 5003 btstack_linked_list_iterator_t it; 5004 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5005 while (btstack_linked_list_iterator_has_next(&it)){ 5006 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5007 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5008 btstack_linked_list_iterator_remove(&it); 5009 btstack_memory_whitelist_entry_free(entry); 5010 } else { 5011 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5012 } 5013 } 5014 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5015 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5016 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5017 while (btstack_linked_list_iterator_has_next(&it)){ 5018 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5019 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5020 btstack_linked_list_iterator_remove(&it); 5021 btstack_memory_periodic_advertiser_list_entry_free(entry); 5022 } else { 5023 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5024 continue; 5025 } 5026 } 5027 #endif 5028 #endif 5029 // see hci_run 5030 hci_stack->state = HCI_STATE_HALTING; 5031 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5032 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5033 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5034 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5035 btstack_run_loop_add_timer(&hci_stack->timeout); 5036 } 5037 5038 // returns error 5039 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5040 int err; 5041 switch (power_mode){ 5042 case HCI_POWER_ON: 5043 err = hci_power_control_on(); 5044 if (err != 0) { 5045 log_error("hci_power_control_on() error %d", err); 5046 return err; 5047 } 5048 hci_power_enter_initializing_state(); 5049 break; 5050 case HCI_POWER_OFF: 5051 // do nothing 5052 break; 5053 case HCI_POWER_SLEEP: 5054 // do nothing (with SLEEP == OFF) 5055 break; 5056 default: 5057 btstack_assert(false); 5058 break; 5059 } 5060 return ERROR_CODE_SUCCESS; 5061 } 5062 5063 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5064 switch (power_mode){ 5065 case HCI_POWER_ON: 5066 // do nothing 5067 break; 5068 case HCI_POWER_OFF: 5069 // no connections yet, just turn it off 5070 hci_power_control_off(); 5071 break; 5072 case HCI_POWER_SLEEP: 5073 // no connections yet, just turn it off 5074 hci_power_control_sleep(); 5075 break; 5076 default: 5077 btstack_assert(false); 5078 break; 5079 } 5080 return ERROR_CODE_SUCCESS; 5081 } 5082 5083 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5084 switch (power_mode){ 5085 case HCI_POWER_ON: 5086 // do nothing 5087 break; 5088 case HCI_POWER_OFF: 5089 hci_power_enter_halting_state(); 5090 break; 5091 case HCI_POWER_SLEEP: 5092 // see hci_run 5093 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5094 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5095 break; 5096 default: 5097 btstack_assert(false); 5098 break; 5099 } 5100 return ERROR_CODE_SUCCESS; 5101 } 5102 5103 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5104 switch (power_mode){ 5105 case HCI_POWER_ON: 5106 hci_power_enter_initializing_state(); 5107 break; 5108 case HCI_POWER_OFF: 5109 // do nothing 5110 break; 5111 case HCI_POWER_SLEEP: 5112 // see hci_run 5113 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5114 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5115 break; 5116 default: 5117 btstack_assert(false); 5118 break; 5119 } 5120 return ERROR_CODE_SUCCESS; 5121 } 5122 5123 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5124 switch (power_mode){ 5125 case HCI_POWER_ON: 5126 hci_power_enter_initializing_state(); 5127 break; 5128 case HCI_POWER_OFF: 5129 hci_power_enter_halting_state(); 5130 break; 5131 case HCI_POWER_SLEEP: 5132 // do nothing 5133 break; 5134 default: 5135 btstack_assert(false); 5136 break; 5137 } 5138 return ERROR_CODE_SUCCESS; 5139 } 5140 5141 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5142 int err; 5143 switch (power_mode){ 5144 case HCI_POWER_ON: 5145 err = hci_power_control_wake(); 5146 if (err) return err; 5147 hci_power_enter_initializing_state(); 5148 break; 5149 case HCI_POWER_OFF: 5150 hci_power_enter_halting_state(); 5151 break; 5152 case HCI_POWER_SLEEP: 5153 // do nothing 5154 break; 5155 default: 5156 btstack_assert(false); 5157 break; 5158 } 5159 return ERROR_CODE_SUCCESS; 5160 } 5161 5162 int hci_power_control(HCI_POWER_MODE power_mode){ 5163 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5164 btstack_run_loop_remove_timer(&hci_stack->timeout); 5165 int err = 0; 5166 switch (hci_stack->state){ 5167 case HCI_STATE_OFF: 5168 err = hci_power_control_state_off(power_mode); 5169 break; 5170 case HCI_STATE_INITIALIZING: 5171 err = hci_power_control_state_initializing(power_mode); 5172 break; 5173 case HCI_STATE_WORKING: 5174 err = hci_power_control_state_working(power_mode); 5175 break; 5176 case HCI_STATE_HALTING: 5177 err = hci_power_control_state_halting(power_mode); 5178 break; 5179 case HCI_STATE_FALLING_ASLEEP: 5180 err = hci_power_control_state_falling_asleep(power_mode); 5181 break; 5182 case HCI_STATE_SLEEPING: 5183 err = hci_power_control_state_sleeping(power_mode); 5184 break; 5185 default: 5186 btstack_assert(false); 5187 break; 5188 } 5189 if (err != 0){ 5190 return err; 5191 } 5192 5193 // create internal event 5194 hci_emit_state(); 5195 5196 // trigger next/first action 5197 hci_run(); 5198 5199 return 0; 5200 } 5201 5202 5203 static void hci_halting_run(void) { 5204 5205 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5206 5207 hci_connection_t *connection; 5208 #ifdef ENABLE_BLE 5209 #ifdef ENABLE_LE_PERIPHERAL 5210 bool stop_advertismenets; 5211 #endif 5212 #endif 5213 5214 switch (hci_stack->substate) { 5215 case HCI_HALTING_CLASSIC_STOP: 5216 #ifdef ENABLE_CLASSIC 5217 if (!hci_can_send_command_packet_now()) return; 5218 5219 if (hci_stack->connectable || hci_stack->discoverable){ 5220 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5221 hci_send_cmd(&hci_write_scan_enable, 0); 5222 return; 5223 } 5224 #endif 5225 /* fall through */ 5226 5227 case HCI_HALTING_LE_ADV_STOP: 5228 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5229 5230 #ifdef ENABLE_BLE 5231 #ifdef ENABLE_LE_PERIPHERAL 5232 if (!hci_can_send_command_packet_now()) return; 5233 5234 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5235 5236 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5237 if (hci_extended_advertising_supported()){ 5238 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5239 btstack_linked_list_iterator_t it; 5240 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5241 // stop all periodic advertisements and check if an extended set is active 5242 while (btstack_linked_list_iterator_has_next(&it)){ 5243 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5244 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5245 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5246 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5247 return; 5248 } 5249 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5250 stop_advertismenets = true; 5251 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5252 } 5253 } 5254 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5255 if (stop_advertismenets){ 5256 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5257 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5258 return; 5259 } 5260 } else 5261 #else /* ENABLE_LE_PERIPHERAL */ 5262 { 5263 if (stop_advertismenets) { 5264 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5265 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5266 return; 5267 } 5268 } 5269 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5270 #endif /* ENABLE_LE_PERIPHERAL */ 5271 #endif /* ENABLE_BLE */ 5272 5273 /* fall through */ 5274 5275 case HCI_HALTING_LE_SCAN_STOP: 5276 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5277 if (!hci_can_send_command_packet_now()) return; 5278 5279 #ifdef ENABLE_BLE 5280 #ifdef ENABLE_LE_CENTRAL 5281 if (hci_stack->le_scanning_active){ 5282 hci_le_scan_stop(); 5283 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5284 return; 5285 } 5286 #endif 5287 #endif 5288 5289 /* fall through */ 5290 5291 case HCI_HALTING_DISCONNECT_ALL: 5292 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5293 if (!hci_can_send_command_packet_now()) return; 5294 5295 // close all open connections 5296 connection = (hci_connection_t *) hci_stack->connections; 5297 if (connection) { 5298 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5299 5300 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5301 5302 // check state 5303 switch(connection->state) { 5304 case SENT_DISCONNECT: 5305 case RECEIVED_DISCONNECTION_COMPLETE: 5306 // wait until connection is gone 5307 return; 5308 default: 5309 break; 5310 } 5311 5312 // finally, send the disconnect command 5313 connection->state = SENT_DISCONNECT; 5314 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5315 return; 5316 } 5317 5318 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5319 // stop BIGs and BIG Syncs 5320 if (hci_stack->le_audio_bigs != NULL){ 5321 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5322 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5323 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5324 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5325 return; 5326 } 5327 if (hci_stack->le_audio_big_syncs != NULL){ 5328 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5329 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5330 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5331 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5332 return; 5333 } 5334 #endif 5335 5336 btstack_run_loop_remove_timer(&hci_stack->timeout); 5337 5338 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5339 log_info("HCI_STATE_HALTING: wait 50 ms"); 5340 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5341 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5342 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5343 btstack_run_loop_add_timer(&hci_stack->timeout); 5344 break; 5345 5346 case HCI_HALTING_W4_CLOSE_TIMER: 5347 // keep waiting 5348 break; 5349 5350 case HCI_HALTING_CLOSE: 5351 // close left over connections (that had not been properly closed before) 5352 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5353 hci_discard_connections(); 5354 5355 log_info("HCI_STATE_HALTING, calling off"); 5356 5357 // switch mode 5358 hci_power_control_off(); 5359 5360 log_info("HCI_STATE_HALTING, emitting state"); 5361 hci_emit_state(); 5362 log_info("HCI_STATE_HALTING, done"); 5363 break; 5364 5365 default: 5366 break; 5367 } 5368 }; 5369 5370 static void hci_falling_asleep_run(void){ 5371 hci_connection_t * connection; 5372 switch(hci_stack->substate) { 5373 case HCI_FALLING_ASLEEP_DISCONNECT: 5374 log_info("HCI_STATE_FALLING_ASLEEP"); 5375 // close all open connections 5376 connection = (hci_connection_t *) hci_stack->connections; 5377 if (connection){ 5378 5379 // send disconnect 5380 if (!hci_can_send_command_packet_now()) return; 5381 5382 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5383 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5384 5385 // send disconnected event right away - causes higher layer connections to get closed, too. 5386 hci_shutdown_connection(connection); 5387 return; 5388 } 5389 5390 if (hci_classic_supported()){ 5391 // disable page and inquiry scan 5392 if (!hci_can_send_command_packet_now()) return; 5393 5394 log_info("HCI_STATE_HALTING, disabling inq scans"); 5395 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5396 5397 // continue in next sub state 5398 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5399 break; 5400 } 5401 5402 /* fall through */ 5403 5404 case HCI_FALLING_ASLEEP_COMPLETE: 5405 log_info("HCI_STATE_HALTING, calling sleep"); 5406 // switch mode 5407 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5408 hci_emit_state(); 5409 break; 5410 5411 default: 5412 break; 5413 } 5414 } 5415 5416 #ifdef ENABLE_CLASSIC 5417 5418 static void hci_update_scan_enable(void){ 5419 // 2 = page scan, 1 = inq scan 5420 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5421 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5422 hci_run(); 5423 } 5424 5425 void gap_discoverable_control(uint8_t enable){ 5426 if (enable) enable = 1; // normalize argument 5427 5428 if (hci_stack->discoverable == enable){ 5429 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5430 return; 5431 } 5432 5433 hci_stack->discoverable = enable; 5434 hci_update_scan_enable(); 5435 } 5436 5437 void gap_connectable_control(uint8_t enable){ 5438 if (enable) enable = 1; // normalize argument 5439 5440 // don't emit event 5441 if (hci_stack->connectable == enable) return; 5442 5443 hci_stack->connectable = enable; 5444 hci_update_scan_enable(); 5445 } 5446 #endif 5447 5448 void gap_local_bd_addr(bd_addr_t address_buffer){ 5449 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5450 } 5451 5452 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5453 static void hci_host_num_completed_packets(void){ 5454 5455 // create packet manually as arrays are not supported and num_commands should not get reduced 5456 hci_reserve_packet_buffer(); 5457 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5458 5459 uint16_t size = 0; 5460 uint16_t num_handles = 0; 5461 packet[size++] = 0x35; 5462 packet[size++] = 0x0c; 5463 size++; // skip param len 5464 size++; // skip num handles 5465 5466 // add { handle, packets } entries 5467 btstack_linked_item_t * it; 5468 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5469 hci_connection_t * connection = (hci_connection_t *) it; 5470 if (connection->num_packets_completed){ 5471 little_endian_store_16(packet, size, connection->con_handle); 5472 size += 2; 5473 little_endian_store_16(packet, size, connection->num_packets_completed); 5474 size += 2; 5475 // 5476 num_handles++; 5477 connection->num_packets_completed = 0; 5478 } 5479 } 5480 5481 packet[2] = size - 3; 5482 packet[3] = num_handles; 5483 5484 hci_stack->host_completed_packets = 0; 5485 5486 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5487 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5488 5489 // release packet buffer for synchronous transport implementations 5490 if (hci_transport_synchronous()){ 5491 hci_release_packet_buffer(); 5492 hci_emit_transport_packet_sent(); 5493 } 5494 } 5495 #endif 5496 5497 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5498 UNUSED(ds); 5499 hci_stack->substate = HCI_HALTING_CLOSE; 5500 hci_halting_run(); 5501 } 5502 5503 static bool hci_run_acl_fragments(void){ 5504 if (hci_stack->acl_fragmentation_total_size > 0u) { 5505 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5506 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5507 if (connection) { 5508 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5509 hci_send_acl_packet_fragments(connection); 5510 return true; 5511 } 5512 } else { 5513 // connection gone -> discard further fragments 5514 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5515 hci_stack->acl_fragmentation_total_size = 0; 5516 hci_stack->acl_fragmentation_pos = 0; 5517 } 5518 } 5519 return false; 5520 } 5521 5522 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5523 static bool hci_run_iso_fragments(void){ 5524 if (hci_stack->iso_fragmentation_total_size > 0u) { 5525 // TODO: flow control 5526 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5527 hci_send_iso_packet_fragments(); 5528 return true; 5529 } 5530 } 5531 return false; 5532 } 5533 #endif 5534 5535 #ifdef ENABLE_CLASSIC 5536 5537 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5538 static bool hci_classic_operation_active(void) { 5539 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5540 return true; 5541 } 5542 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5543 return true; 5544 } 5545 btstack_linked_item_t * it; 5546 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5547 hci_connection_t *connection = (hci_connection_t *) it; 5548 switch (connection->state) { 5549 case SENT_CREATE_CONNECTION: 5550 case SENT_CANCEL_CONNECTION: 5551 case SENT_DISCONNECT: 5552 return true; 5553 default: 5554 break; 5555 } 5556 } 5557 return false; 5558 } 5559 #endif 5560 5561 static bool hci_run_general_gap_classic(void){ 5562 5563 // assert stack is working and classic is active 5564 if (hci_classic_supported() == false) return false; 5565 if (hci_stack->state != HCI_STATE_WORKING) return false; 5566 5567 // decline incoming connections 5568 if (hci_stack->decline_reason){ 5569 uint8_t reason = hci_stack->decline_reason; 5570 hci_stack->decline_reason = 0; 5571 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5572 return true; 5573 } 5574 5575 if (hci_stack->gap_tasks_classic != 0){ 5576 hci_run_gap_tasks_classic(); 5577 return true; 5578 } 5579 5580 // start/stop inquiry 5581 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5582 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5583 if (hci_classic_operation_active() == false) 5584 #endif 5585 { 5586 uint8_t duration = hci_stack->inquiry_state; 5587 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5588 if (hci_stack->inquiry_max_period_length != 0){ 5589 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); 5590 } else { 5591 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5592 } 5593 return true; 5594 } 5595 } 5596 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5597 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5598 hci_send_cmd(&hci_inquiry_cancel); 5599 return true; 5600 } 5601 5602 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5603 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5604 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5605 return true; 5606 } 5607 5608 // remote name request 5609 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5610 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5611 if (hci_classic_operation_active() == false) 5612 #endif 5613 { 5614 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5615 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5616 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5617 return true; 5618 } 5619 } 5620 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5621 // Local OOB data 5622 if (hci_stack->classic_read_local_oob_data){ 5623 hci_stack->classic_read_local_oob_data = false; 5624 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5625 hci_send_cmd(&hci_read_local_extended_oob_data); 5626 } else { 5627 hci_send_cmd(&hci_read_local_oob_data); 5628 } 5629 } 5630 #endif 5631 // pairing 5632 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5633 uint8_t state = hci_stack->gap_pairing_state; 5634 uint8_t pin_code[16]; 5635 switch (state){ 5636 case GAP_PAIRING_STATE_SEND_PIN: 5637 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5638 memset(pin_code, 0, 16); 5639 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5640 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5641 break; 5642 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5643 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5644 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5645 break; 5646 case GAP_PAIRING_STATE_SEND_PASSKEY: 5647 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5648 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5649 break; 5650 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5651 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5652 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5653 break; 5654 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5655 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5656 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5657 break; 5658 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5659 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5660 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5661 break; 5662 default: 5663 break; 5664 } 5665 return true; 5666 } 5667 return false; 5668 } 5669 #endif 5670 5671 #ifdef ENABLE_BLE 5672 5673 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5674 static uint8_t hci_le_num_phys(uint8_t phys){ 5675 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5676 btstack_assert(phys); 5677 return num_bits_set[phys]; 5678 } 5679 #endif 5680 5681 #ifdef ENABLE_LE_CENTRAL 5682 static void hci_le_scan_stop(void){ 5683 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5684 if (hci_extended_advertising_supported()) { 5685 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5686 } else 5687 #endif 5688 { 5689 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5690 } 5691 } 5692 5693 static void 5694 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5695 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5696 if (hci_extended_advertising_supported()) { 5697 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5698 uint16_t le_connection_scan_interval[3]; 5699 uint16_t le_connection_scan_window[3]; 5700 uint16_t le_connection_interval_min[3]; 5701 uint16_t le_connection_interval_max[3]; 5702 uint16_t le_connection_latency[3]; 5703 uint16_t le_supervision_timeout[3]; 5704 uint16_t le_minimum_ce_length[3]; 5705 uint16_t le_maximum_ce_length[3]; 5706 5707 uint8_t i; 5708 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5709 for (i=0;i<num_phys;i++){ 5710 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5711 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5712 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5713 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5714 le_connection_latency[i] = hci_stack->le_connection_latency; 5715 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5716 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5717 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5718 } 5719 hci_send_cmd(&hci_le_extended_create_connection, 5720 initiator_filter_policy, 5721 hci_stack->le_connection_own_addr_type, // our addr type: 5722 address_type, // peer address type 5723 address, // peer bd addr 5724 hci_stack->le_connection_phys, // initiating PHY 5725 le_connection_scan_interval, // conn scan interval 5726 le_connection_scan_window, // conn scan windows 5727 le_connection_interval_min, // conn interval min 5728 le_connection_interval_max, // conn interval max 5729 le_connection_latency, // conn latency 5730 le_supervision_timeout, // conn latency 5731 le_minimum_ce_length, // min ce length 5732 le_maximum_ce_length // max ce length 5733 ); 5734 } else 5735 #endif 5736 { 5737 hci_send_cmd(&hci_le_create_connection, 5738 hci_stack->le_connection_scan_interval, // conn scan interval 5739 hci_stack->le_connection_scan_window, // conn scan windows 5740 initiator_filter_policy, // don't use whitelist 5741 address_type, // peer address type 5742 address, // peer bd addr 5743 hci_stack->le_connection_own_addr_type, // our addr type: 5744 hci_stack->le_connection_interval_min, // conn interval min 5745 hci_stack->le_connection_interval_max, // conn interval max 5746 hci_stack->le_connection_latency, // conn latency 5747 hci_stack->le_supervision_timeout, // conn latency 5748 hci_stack->le_minimum_ce_length, // min ce length 5749 hci_stack->le_maximum_ce_length // max ce length 5750 ); 5751 } 5752 } 5753 #endif 5754 5755 #ifdef ENABLE_LE_PERIPHERAL 5756 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5757 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5758 uint8_t operation = 0; 5759 if (pos == 0){ 5760 // first fragment or complete data 5761 operation |= 1; 5762 } 5763 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5764 // last fragment or complete data 5765 operation |= 2; 5766 } 5767 return operation; 5768 } 5769 #endif 5770 #endif 5771 5772 static bool hci_run_general_gap_le(void){ 5773 5774 btstack_linked_list_iterator_t lit; 5775 5776 // Phase 1: collect what to stop 5777 5778 #ifdef ENABLE_LE_CENTRAL 5779 bool scanning_stop = false; 5780 bool connecting_stop = false; 5781 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5782 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5783 bool periodic_sync_stop = false; 5784 #endif 5785 #endif 5786 #endif 5787 5788 #ifdef ENABLE_LE_PERIPHERAL 5789 bool advertising_stop = false; 5790 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5791 le_advertising_set_t * advertising_stop_set = NULL; 5792 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5793 bool periodic_advertising_stop = false; 5794 #endif 5795 #endif 5796 #endif 5797 5798 // check if own address changes 5799 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5800 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5801 5802 // check if whitelist needs modification 5803 bool whitelist_modification_pending = false; 5804 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5805 while (btstack_linked_list_iterator_has_next(&lit)){ 5806 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5807 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5808 whitelist_modification_pending = true; 5809 break; 5810 } 5811 } 5812 5813 // check if resolving list needs modification 5814 bool resolving_list_modification_pending = false; 5815 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5816 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5817 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5818 resolving_list_modification_pending = true; 5819 } 5820 #endif 5821 5822 #ifdef ENABLE_LE_CENTRAL 5823 5824 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5825 // check if periodic advertiser list needs modification 5826 bool periodic_list_modification_pending = false; 5827 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5828 while (btstack_linked_list_iterator_has_next(&lit)){ 5829 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5830 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5831 periodic_list_modification_pending = true; 5832 break; 5833 } 5834 } 5835 #endif 5836 5837 // scanning control 5838 if (hci_stack->le_scanning_active) { 5839 // stop if: 5840 // - parameter change required 5841 // - it's disabled 5842 // - whitelist change required but used for scanning 5843 // - resolving list modified 5844 // - own address changes 5845 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5846 if ((hci_stack->le_scanning_param_update) || 5847 !hci_stack->le_scanning_enabled || 5848 (scanning_uses_whitelist && whitelist_modification_pending) || 5849 resolving_list_modification_pending || 5850 random_address_change){ 5851 5852 scanning_stop = true; 5853 } 5854 } 5855 5856 // connecting control 5857 bool connecting_with_whitelist; 5858 switch (hci_stack->le_connecting_state){ 5859 case LE_CONNECTING_DIRECT: 5860 case LE_CONNECTING_WHITELIST: 5861 // stop connecting if: 5862 // - connecting uses white and whitelist modification pending 5863 // - if it got disabled 5864 // - resolving list modified 5865 // - own address changes 5866 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5867 if ((connecting_with_whitelist && whitelist_modification_pending) || 5868 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5869 resolving_list_modification_pending || 5870 random_address_change) { 5871 5872 connecting_stop = true; 5873 } 5874 break; 5875 default: 5876 break; 5877 } 5878 5879 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5880 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5881 // periodic sync control 5882 bool sync_with_advertiser_list; 5883 switch(hci_stack->le_periodic_sync_state){ 5884 case LE_CONNECTING_DIRECT: 5885 case LE_CONNECTING_WHITELIST: 5886 // stop sync if: 5887 // - sync with advertiser list and advertiser list modification pending 5888 // - if it got disabled 5889 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5890 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5891 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5892 periodic_sync_stop = true; 5893 } 5894 break; 5895 default: 5896 break; 5897 } 5898 #endif 5899 #endif 5900 5901 #endif /* ENABLE_LE_CENTRAL */ 5902 5903 #ifdef ENABLE_LE_PERIPHERAL 5904 // le advertisement control 5905 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5906 // stop if: 5907 // - parameter change required 5908 // - random address used in advertising and changes 5909 // - it's disabled 5910 // - whitelist change required but used for advertisement filter policy 5911 // - resolving list modified 5912 // - own address changes 5913 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5914 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5915 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5916 if (advertising_change || 5917 (advertising_uses_random_address && random_address_change) || 5918 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5919 (advertising_uses_whitelist && whitelist_modification_pending) || 5920 resolving_list_modification_pending || 5921 random_address_change) { 5922 5923 advertising_stop = true; 5924 } 5925 } 5926 5927 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5928 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5929 btstack_linked_list_iterator_t it; 5930 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5931 while (btstack_linked_list_iterator_has_next(&it)){ 5932 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5933 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5934 // stop if: 5935 // - parameter change required 5936 // - random address used in connectable advertising and changes 5937 // - it's disabled 5938 // - whitelist change required but used for advertisement filter policy 5939 // - resolving list modified 5940 // - own address changes 5941 // - advertisement set will be removed 5942 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5943 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5944 bool advertising_uses_random_address = 5945 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5946 advertising_connectable; 5947 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5948 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5949 bool advertising_set_random_address_change = 5950 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5951 bool advertising_set_will_be_removed = 5952 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5953 if (advertising_parameter_change || 5954 (advertising_uses_random_address && advertising_set_random_address_change) || 5955 (advertising_enabled == false) || 5956 (advertising_uses_whitelist && whitelist_modification_pending) || 5957 resolving_list_modification_pending || 5958 advertising_set_will_be_removed) { 5959 5960 advertising_stop = true; 5961 advertising_stop_set = advertising_set; 5962 break; 5963 } 5964 } 5965 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5966 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5967 // stop if: 5968 // - it's disabled 5969 // - parameter change required 5970 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5971 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5972 if ((periodic_enabled == false) || periodic_parameter_change){ 5973 periodic_advertising_stop = true; 5974 advertising_stop_set = advertising_set; 5975 } 5976 } 5977 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5978 } 5979 } 5980 #endif 5981 5982 #endif 5983 5984 5985 // Phase 2: stop everything that should be off during modifications 5986 5987 5988 // 2.1 Outgoing connection 5989 #ifdef ENABLE_LE_CENTRAL 5990 if (connecting_stop){ 5991 hci_send_cmd(&hci_le_create_connection_cancel); 5992 return true; 5993 } 5994 #endif 5995 5996 // 2.2 Scanning 5997 #ifdef ENABLE_LE_CENTRAL 5998 if (scanning_stop){ 5999 hci_stack->le_scanning_active = false; 6000 hci_le_scan_stop(); 6001 return true; 6002 } 6003 6004 // 2.3 Periodic Sync 6005 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6006 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6007 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6008 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6009 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6010 return true; 6011 } 6012 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6013 if (periodic_sync_stop){ 6014 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6015 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6016 return true; 6017 } 6018 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6019 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6020 #endif /* ENABLE_LE_CENTRAL */ 6021 6022 // 2.4 Advertising: legacy, extended, periodic 6023 #ifdef ENABLE_LE_PERIPHERAL 6024 if (advertising_stop){ 6025 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6026 if (hci_extended_advertising_supported()) { 6027 uint8_t advertising_stop_handle; 6028 if (advertising_stop_set != NULL){ 6029 advertising_stop_handle = advertising_stop_set->advertising_handle; 6030 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6031 } else { 6032 advertising_stop_handle = 0; 6033 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6034 } 6035 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6036 const uint16_t durations[] = { 0 }; 6037 const uint16_t max_events[] = { 0 }; 6038 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6039 } else 6040 #endif 6041 { 6042 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6043 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6044 } 6045 return true; 6046 } 6047 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6048 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6049 if (periodic_advertising_stop){ 6050 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6051 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6052 return true; 6053 } 6054 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6055 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6056 #endif /* ENABLE_LE_PERIPHERAL */ 6057 6058 6059 // Phase 3: modify 6060 6061 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6062 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6063 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6064 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6065 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6066 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6067 #endif 6068 return true; 6069 } 6070 6071 #ifdef ENABLE_LE_CENTRAL 6072 if (hci_stack->le_scanning_param_update){ 6073 hci_stack->le_scanning_param_update = false; 6074 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6075 if (hci_extended_advertising_supported()){ 6076 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6077 uint8_t scan_types[2]; 6078 uint16_t scan_intervals[2]; 6079 uint16_t scan_windows[2]; 6080 6081 uint8_t i; 6082 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6083 for (i=0;i<num_phys;i++){ 6084 scan_types[i] = hci_stack->le_scan_type; 6085 scan_intervals[i] = hci_stack->le_scan_interval; 6086 scan_windows[i] = hci_stack->le_scan_window; 6087 } 6088 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6089 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6090 } else 6091 #endif 6092 { 6093 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6094 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6095 } 6096 return true; 6097 } 6098 #endif 6099 6100 #ifdef ENABLE_LE_PERIPHERAL 6101 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6102 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6103 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6104 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6105 if (hci_extended_advertising_supported()){ 6106 // map advertisment type to advertising event properties 6107 uint16_t adv_event_properties = 0; 6108 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6109 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6110 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6111 } 6112 hci_stack->le_advertising_set_in_current_command = 0; 6113 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6114 0, 6115 adv_event_properties, 6116 hci_stack->le_advertisements_interval_min, 6117 hci_stack->le_advertisements_interval_max, 6118 hci_stack->le_advertisements_channel_map, 6119 hci_stack->le_advertisements_own_addr_type, 6120 hci_stack->le_advertisements_direct_address_type, 6121 hci_stack->le_advertisements_direct_address, 6122 hci_stack->le_advertisements_filter_policy, 6123 0x7f, // tx power: no preference 6124 0x01, // primary adv phy: LE 1M 6125 0, // secondary adv max skip 6126 0, // secondary adv phy 6127 0, // adv sid 6128 0 // scan request notification 6129 ); 6130 } else 6131 #endif 6132 { 6133 hci_send_cmd(&hci_le_set_advertising_parameters, 6134 hci_stack->le_advertisements_interval_min, 6135 hci_stack->le_advertisements_interval_max, 6136 hci_stack->le_advertisements_type, 6137 hci_stack->le_advertisements_own_addr_type, 6138 hci_stack->le_advertisements_direct_address_type, 6139 hci_stack->le_advertisements_direct_address, 6140 hci_stack->le_advertisements_channel_map, 6141 hci_stack->le_advertisements_filter_policy); 6142 } 6143 return true; 6144 } 6145 6146 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6147 // assumption: only set if extended advertising is supported 6148 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6149 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6150 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6151 return true; 6152 } 6153 #endif 6154 6155 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6156 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6157 uint8_t adv_data_clean[31]; 6158 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6159 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6160 hci_stack->le_advertisements_data_len); 6161 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6162 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6163 if (hci_extended_advertising_supported()){ 6164 hci_stack->le_advertising_set_in_current_command = 0; 6165 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6166 } else 6167 #endif 6168 { 6169 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6170 } 6171 return true; 6172 } 6173 6174 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6175 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6176 uint8_t scan_data_clean[31]; 6177 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6178 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6179 hci_stack->le_scan_response_data_len); 6180 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6181 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6182 if (hci_extended_advertising_supported()){ 6183 hci_stack->le_advertising_set_in_current_command = 0; 6184 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6185 } else 6186 #endif 6187 { 6188 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6189 } 6190 return true; 6191 } 6192 6193 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6194 if (hci_extended_advertising_supported()) { 6195 btstack_linked_list_iterator_t it; 6196 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6197 while (btstack_linked_list_iterator_has_next(&it)){ 6198 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6199 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6200 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6201 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6202 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6203 return true; 6204 } 6205 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6206 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6207 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6208 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6209 advertising_set->advertising_handle, 6210 advertising_set->extended_params.advertising_event_properties, 6211 advertising_set->extended_params.primary_advertising_interval_min, 6212 advertising_set->extended_params.primary_advertising_interval_max, 6213 advertising_set->extended_params.primary_advertising_channel_map, 6214 advertising_set->extended_params.own_address_type, 6215 advertising_set->extended_params.peer_address_type, 6216 advertising_set->extended_params.peer_address, 6217 advertising_set->extended_params.advertising_filter_policy, 6218 advertising_set->extended_params.advertising_tx_power, 6219 advertising_set->extended_params.primary_advertising_phy, 6220 advertising_set->extended_params.secondary_advertising_max_skip, 6221 advertising_set->extended_params.secondary_advertising_phy, 6222 advertising_set->extended_params.advertising_sid, 6223 advertising_set->extended_params.scan_request_notification_enable 6224 ); 6225 return true; 6226 } 6227 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6228 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6229 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6230 return true; 6231 } 6232 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6233 uint16_t pos = advertising_set->adv_data_pos; 6234 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6235 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6236 if ((operation & 0x02) != 0){ 6237 // last fragment or complete data 6238 operation |= 2; 6239 advertising_set->adv_data_pos = 0; 6240 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6241 } else { 6242 advertising_set->adv_data_pos += data_to_upload; 6243 } 6244 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6245 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6246 return true; 6247 } 6248 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6249 uint16_t pos = advertising_set->scan_data_pos; 6250 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6251 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6252 if ((operation & 0x02) != 0){ 6253 advertising_set->scan_data_pos = 0; 6254 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6255 } else { 6256 advertising_set->scan_data_pos += data_to_upload; 6257 } 6258 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6259 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6260 return true; 6261 } 6262 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6263 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6264 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6265 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6266 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6267 advertising_set->advertising_handle, 6268 advertising_set->periodic_params.periodic_advertising_interval_min, 6269 advertising_set->periodic_params.periodic_advertising_interval_max, 6270 advertising_set->periodic_params.periodic_advertising_properties); 6271 return true; 6272 } 6273 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6274 uint16_t pos = advertising_set->periodic_data_pos; 6275 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6276 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6277 if ((operation & 0x02) != 0){ 6278 // last fragment or complete data 6279 operation |= 2; 6280 advertising_set->periodic_data_pos = 0; 6281 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6282 } else { 6283 advertising_set->periodic_data_pos += data_to_upload; 6284 } 6285 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6286 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6287 return true; 6288 } 6289 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6290 } 6291 } 6292 #endif 6293 6294 #endif 6295 6296 #ifdef ENABLE_LE_CENTRAL 6297 // if connect with whitelist was active and is not cancelled yet, wait until next time 6298 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6299 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6300 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6301 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6302 #endif 6303 #endif 6304 6305 // LE Whitelist Management 6306 if (whitelist_modification_pending){ 6307 // add/remove entries 6308 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6309 while (btstack_linked_list_iterator_has_next(&lit)){ 6310 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6311 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6312 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6313 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6314 return true; 6315 } 6316 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6317 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6318 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6319 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6320 return true; 6321 } 6322 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6323 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6324 btstack_memory_whitelist_entry_free(entry); 6325 } 6326 } 6327 } 6328 6329 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6330 // LE Resolving List Management 6331 if (resolving_list_supported) { 6332 uint16_t i; 6333 switch (hci_stack->le_resolving_list_state) { 6334 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6335 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6336 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6337 return true; 6338 case LE_RESOLVING_LIST_READ_SIZE: 6339 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6340 hci_send_cmd(&hci_le_read_resolving_list_size); 6341 return true; 6342 case LE_RESOLVING_LIST_SEND_CLEAR: 6343 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6344 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6345 sizeof(hci_stack->le_resolving_list_add_entries)); 6346 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6347 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6348 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6349 sizeof(hci_stack->le_resolving_list_remove_entries)); 6350 hci_send_cmd(&hci_le_clear_resolving_list); 6351 return true; 6352 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6353 // first remove old entries 6354 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6355 uint8_t offset = i >> 3; 6356 uint8_t mask = 1 << (i & 7); 6357 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6358 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6359 bd_addr_t peer_identity_addreses; 6360 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6361 sm_key_t peer_irk; 6362 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6363 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6364 6365 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6366 // trigger whitelist entry 'update' (work around for controller bug) 6367 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6368 while (btstack_linked_list_iterator_has_next(&lit)) { 6369 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6370 if (entry->address_type != peer_identity_addr_type) continue; 6371 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6372 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6373 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6374 } 6375 #endif 6376 6377 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6378 peer_identity_addreses); 6379 return true; 6380 } 6381 6382 // then add new entries 6383 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6384 uint8_t offset = i >> 3; 6385 uint8_t mask = 1 << (i & 7); 6386 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6387 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6388 bd_addr_t peer_identity_addreses; 6389 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6390 sm_key_t peer_irk; 6391 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6392 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6393 if (btstack_is_null(peer_irk, 16)) continue; 6394 const uint8_t *local_irk = gap_get_persistent_irk(); 6395 // command uses format specifier 'P' that stores 16-byte value without flip 6396 uint8_t local_irk_flipped[16]; 6397 uint8_t peer_irk_flipped[16]; 6398 reverse_128(local_irk, local_irk_flipped); 6399 reverse_128(peer_irk, peer_irk_flipped); 6400 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6401 peer_irk_flipped, local_irk_flipped); 6402 return true; 6403 } 6404 6405 // finally, set privacy mode 6406 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6407 uint8_t offset = i >> 3; 6408 uint8_t mask = 1 << (i & 7); 6409 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6410 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6411 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6412 // Network Privacy Mode is default 6413 continue; 6414 } 6415 bd_addr_t peer_identity_address; 6416 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6417 sm_key_t peer_irk; 6418 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6419 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6420 if (btstack_is_null(peer_irk, 16)) continue; 6421 // command uses format specifier 'P' that stores 16-byte value without flip 6422 uint8_t peer_irk_flipped[16]; 6423 reverse_128(peer_irk, peer_irk_flipped); 6424 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6425 return true; 6426 } 6427 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6428 break; 6429 6430 default: 6431 break; 6432 } 6433 } 6434 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6435 #endif 6436 6437 #ifdef ENABLE_LE_CENTRAL 6438 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6439 // LE Whitelist Management 6440 if (periodic_list_modification_pending){ 6441 // add/remove entries 6442 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6443 while (btstack_linked_list_iterator_has_next(&lit)){ 6444 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6445 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6446 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6447 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6448 return true; 6449 } 6450 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6451 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6452 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6453 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6454 return true; 6455 } 6456 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6457 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6458 btstack_memory_periodic_advertiser_list_entry_free(entry); 6459 } 6460 } 6461 } 6462 #endif 6463 #endif 6464 6465 #ifdef ENABLE_LE_CENTRAL 6466 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6467 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6468 if (hci_stack->le_past_set_default_params){ 6469 hci_stack->le_past_set_default_params = false; 6470 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6471 hci_stack->le_past_mode, 6472 hci_stack->le_past_skip, 6473 hci_stack->le_past_sync_timeout, 6474 hci_stack->le_past_cte_type); 6475 return true; 6476 } 6477 #endif 6478 #endif 6479 #endif 6480 6481 // post-pone all actions until stack is fully working 6482 if (hci_stack->state != HCI_STATE_WORKING) return false; 6483 6484 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6485 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6486 6487 // Phase 4: restore state 6488 6489 #ifdef ENABLE_LE_CENTRAL 6490 // re-start scanning 6491 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6492 hci_stack->le_scanning_active = true; 6493 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6494 if (hci_extended_advertising_supported()){ 6495 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6496 } else 6497 #endif 6498 { 6499 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6500 } 6501 return true; 6502 } 6503 #endif 6504 6505 #ifdef ENABLE_LE_CENTRAL 6506 // re-start connecting 6507 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6508 bd_addr_t null_addr; 6509 memset(null_addr, 0, 6); 6510 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6511 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6512 hci_send_le_create_connection(1, 0, null_addr); 6513 return true; 6514 } 6515 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6516 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6517 switch(hci_stack->le_periodic_sync_request){ 6518 case LE_CONNECTING_DIRECT: 6519 case LE_CONNECTING_WHITELIST: 6520 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6521 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6522 hci_stack->le_periodic_sync_options, 6523 hci_stack->le_periodic_sync_advertising_sid, 6524 hci_stack->le_periodic_sync_advertiser_address_type, 6525 hci_stack->le_periodic_sync_advertiser_address, 6526 hci_stack->le_periodic_sync_skip, 6527 hci_stack->le_periodic_sync_timeout, 6528 hci_stack->le_periodic_sync_cte_type); 6529 return true; 6530 default: 6531 break; 6532 } 6533 } 6534 #endif 6535 #endif 6536 6537 #ifdef ENABLE_LE_PERIPHERAL 6538 // re-start advertising 6539 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6540 // check if advertisements should be enabled given 6541 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6542 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6543 6544 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6545 if (hci_extended_advertising_supported()){ 6546 const uint8_t advertising_handles[] = { 0 }; 6547 const uint16_t durations[] = { 0 }; 6548 const uint16_t max_events[] = { 0 }; 6549 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6550 } else 6551 #endif 6552 { 6553 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6554 } 6555 return true; 6556 } 6557 6558 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6559 if (hci_extended_advertising_supported()) { 6560 btstack_linked_list_iterator_t it; 6561 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6562 while (btstack_linked_list_iterator_has_next(&it)) { 6563 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6564 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6565 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6566 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6567 const uint16_t durations[] = { advertising_set->enable_timeout }; 6568 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6569 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6570 return true; 6571 } 6572 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6573 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6574 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6575 uint8_t enable = 1; 6576 if (advertising_set->periodic_include_adi){ 6577 enable |= 2; 6578 } 6579 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6580 return true; 6581 } 6582 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6583 } 6584 } 6585 #endif 6586 #endif 6587 6588 return false; 6589 } 6590 6591 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6592 static bool hci_run_iso_tasks(void){ 6593 btstack_linked_list_iterator_t it; 6594 6595 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6596 return false; 6597 } 6598 6599 // BIG 6600 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6601 while (btstack_linked_list_iterator_has_next(&it)){ 6602 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6603 switch (big->state){ 6604 case LE_AUDIO_BIG_STATE_CREATE: 6605 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6606 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6607 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6608 hci_send_cmd(&hci_le_create_big, 6609 big->params->big_handle, 6610 big->params->advertising_handle, 6611 big->params->num_bis, 6612 big->params->sdu_interval_us, 6613 big->params->max_sdu, 6614 big->params->max_transport_latency_ms, 6615 big->params->rtn, 6616 big->params->phy, 6617 big->params->packing, 6618 big->params->framing, 6619 big->params->encryption, 6620 big->params->broadcast_code); 6621 return true; 6622 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6623 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6624 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, 0, 0, 0, 0, 0, NULL); 6625 return true; 6626 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6627 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6628 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6629 return true; 6630 case LE_AUDIO_BIG_STATE_TERMINATE: 6631 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6632 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6633 return true; 6634 default: 6635 break; 6636 } 6637 } 6638 6639 // BIG Sync 6640 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6641 while (btstack_linked_list_iterator_has_next(&it)){ 6642 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6643 switch (big_sync->state){ 6644 case LE_AUDIO_BIG_STATE_CREATE: 6645 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6646 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6647 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6648 hci_send_cmd(&hci_le_big_create_sync, 6649 big_sync->params->big_handle, 6650 big_sync->params->sync_handle, 6651 big_sync->params->encryption, 6652 big_sync->params->broadcast_code, 6653 big_sync->params->mse, 6654 big_sync->params->big_sync_timeout_10ms, 6655 big_sync->params->num_bis, 6656 big_sync->params->bis_indices); 6657 return true; 6658 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6659 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6660 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, 0, 0, 0, 0, 0, NULL); 6661 return true; 6662 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6663 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6664 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6665 return true; 6666 case LE_AUDIO_BIG_STATE_TERMINATE: 6667 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6668 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6669 return true; 6670 default: 6671 break; 6672 } 6673 } 6674 6675 // CIG 6676 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6677 while (btstack_linked_list_iterator_has_next(&it)) { 6678 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6679 uint8_t i; 6680 // Set CIG Parameters 6681 uint8_t cis_id[MAX_NR_CIS]; 6682 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6683 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6684 uint8_t phy_c_to_p[MAX_NR_CIS]; 6685 uint8_t phy_p_to_c[MAX_NR_CIS]; 6686 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6687 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6688 switch (cig->state) { 6689 case LE_AUDIO_CIG_STATE_CREATE: 6690 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6691 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6692 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6693 le_audio_cig_params_t * params = cig->params; 6694 for (i = 0; i < params->num_cis; i++) { 6695 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6696 cis_id[i] = cis_params->cis_id; 6697 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6698 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6699 phy_c_to_p[i] = cis_params->phy_c_to_p; 6700 phy_p_to_c[i] = cis_params->phy_p_to_c; 6701 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6702 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6703 } 6704 hci_send_cmd(&hci_le_set_cig_parameters, 6705 cig->cig_id, 6706 params->sdu_interval_c_to_p, 6707 params->sdu_interval_p_to_c, 6708 params->worst_case_sca, 6709 params->packing, 6710 params->framing, 6711 params->max_transport_latency_c_to_p, 6712 params->max_transport_latency_p_to_c, 6713 params->num_cis, 6714 cis_id, 6715 max_sdu_c_to_p, 6716 max_sdu_p_to_c, 6717 phy_c_to_p, 6718 phy_p_to_c, 6719 rtn_c_to_p, 6720 rtn_p_to_c 6721 ); 6722 return true; 6723 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6724 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6725 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6726 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6727 for (i=0;i<cig->num_cis;i++){ 6728 cig->cis_setup_active[i] = true; 6729 } 6730 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6731 return true; 6732 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6733 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6734 // find next path to setup 6735 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6736 if (cig->cis_established[cis_index] == false) { 6737 continue; 6738 } 6739 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6740 bool setup = true; 6741 if (cis_direction == 0){ 6742 // 0 - input - host to controller 6743 // we are central => central to peripheral 6744 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6745 } else { 6746 // 1 - output - controller to host 6747 // we are central => peripheral to central 6748 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6749 } 6750 if (setup){ 6751 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6752 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6753 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6754 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6755 return true; 6756 } 6757 cig->state_vars.next_cis++; 6758 } 6759 // emit done 6760 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6761 default: 6762 break; 6763 } 6764 } 6765 6766 // CIS Accept/Reject 6767 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6768 while (btstack_linked_list_iterator_has_next(&it)) { 6769 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6770 hci_con_handle_t con_handle; 6771 switch (iso_stream->state){ 6772 case HCI_ISO_STREAM_W2_ACCEPT: 6773 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6774 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6775 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6776 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6777 return true; 6778 case HCI_ISO_STREAM_W2_REJECT: 6779 con_handle = iso_stream->cis_handle; 6780 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6781 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6782 hci_iso_stream_finalize(iso_stream); 6783 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6784 return true; 6785 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6786 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6787 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6788 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6789 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6790 break; 6791 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6792 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6793 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6794 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6795 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6796 break; 6797 default: 6798 break; 6799 } 6800 } 6801 6802 return false; 6803 } 6804 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6805 #endif 6806 6807 static bool hci_run_general_pending_commands(void){ 6808 btstack_linked_item_t * it; 6809 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6810 hci_connection_t * connection = (hci_connection_t *) it; 6811 6812 switch(connection->state){ 6813 case SEND_CREATE_CONNECTION: 6814 switch(connection->address_type){ 6815 #ifdef ENABLE_CLASSIC 6816 case BD_ADDR_TYPE_ACL: 6817 log_info("sending hci_create_connection"); 6818 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6819 break; 6820 #endif 6821 default: 6822 #ifdef ENABLE_BLE 6823 #ifdef ENABLE_LE_CENTRAL 6824 log_info("sending hci_le_create_connection"); 6825 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6826 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6827 hci_send_le_create_connection(0, connection->address_type, connection->address); 6828 connection->state = SENT_CREATE_CONNECTION; 6829 #endif 6830 #endif 6831 break; 6832 } 6833 return true; 6834 6835 #ifdef ENABLE_CLASSIC 6836 case RECEIVED_CONNECTION_REQUEST: 6837 connection->role = HCI_ROLE_SLAVE; 6838 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6839 log_info("sending hci_accept_connection_request"); 6840 connection->state = ACCEPTED_CONNECTION_REQUEST; 6841 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6842 return true; 6843 } 6844 break; 6845 #endif 6846 case SEND_DISCONNECT: 6847 connection->state = SENT_DISCONNECT; 6848 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6849 return true; 6850 6851 default: 6852 break; 6853 } 6854 6855 // no further commands if connection is about to get shut down 6856 if (connection->state == SENT_DISCONNECT) continue; 6857 6858 #ifdef ENABLE_CLASSIC 6859 6860 // Handling link key request requires remote supported features 6861 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6862 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6863 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6864 6865 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6866 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6867 if (have_link_key && security_level_sufficient){ 6868 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6869 } else { 6870 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6871 } 6872 return true; 6873 } 6874 6875 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6876 log_info("denying to pin request"); 6877 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6878 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6879 return true; 6880 } 6881 6882 // security assessment requires remote features 6883 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6884 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6885 hci_ssp_assess_security_on_io_cap_request(connection); 6886 // 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 6887 } 6888 6889 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6890 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6891 // set authentication requirements: 6892 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6893 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6894 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6895 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6896 authreq |= 1; 6897 } 6898 bool bonding = hci_stack->bondable; 6899 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6900 // if we have received IO Cap Response, we're in responder role 6901 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6902 if (bonding && !remote_bonding){ 6903 log_info("Remote not bonding, dropping local flag"); 6904 bonding = false; 6905 } 6906 } 6907 if (bonding){ 6908 if (connection->bonding_flags & BONDING_DEDICATED){ 6909 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6910 } else { 6911 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6912 } 6913 } 6914 uint8_t have_oob_data = 0; 6915 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6916 if (connection->classic_oob_c_192 != NULL){ 6917 have_oob_data |= 1; 6918 } 6919 if (connection->classic_oob_c_256 != NULL){ 6920 have_oob_data |= 2; 6921 } 6922 #endif 6923 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6924 return true; 6925 } 6926 6927 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6928 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6929 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6930 return true; 6931 } 6932 6933 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6934 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6935 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6936 const uint8_t zero[16] = { 0 }; 6937 const uint8_t * r_192 = zero; 6938 const uint8_t * c_192 = zero; 6939 const uint8_t * r_256 = zero; 6940 const uint8_t * c_256 = zero; 6941 // verify P-256 OOB 6942 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6943 c_256 = connection->classic_oob_c_256; 6944 if (connection->classic_oob_r_256 != NULL) { 6945 r_256 = connection->classic_oob_r_256; 6946 } 6947 } 6948 // verify P-192 OOB 6949 if ((connection->classic_oob_c_192 != NULL)) { 6950 c_192 = connection->classic_oob_c_192; 6951 if (connection->classic_oob_r_192 != NULL) { 6952 r_192 = connection->classic_oob_r_192; 6953 } 6954 } 6955 6956 // assess security 6957 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6958 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6959 if (need_level_4 && !can_reach_level_4){ 6960 log_info("Level 4 required, but not possible -> abort"); 6961 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6962 // send oob negative reply 6963 c_256 = NULL; 6964 c_192 = NULL; 6965 } 6966 6967 // Reply 6968 if (c_256 != zero) { 6969 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6970 } else if (c_192 != zero){ 6971 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6972 } else { 6973 hci_stack->classic_oob_con_handle = connection->con_handle; 6974 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6975 } 6976 return true; 6977 } 6978 #endif 6979 6980 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6981 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6982 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6983 return true; 6984 } 6985 6986 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6987 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6988 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6989 return true; 6990 } 6991 6992 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6993 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6994 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6995 return true; 6996 } 6997 6998 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6999 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7000 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7001 connection->state = SENT_DISCONNECT; 7002 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7003 return true; 7004 } 7005 7006 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7007 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7008 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7009 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7010 return true; 7011 } 7012 7013 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7014 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7015 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7016 return true; 7017 } 7018 7019 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7020 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7021 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7022 return true; 7023 } 7024 7025 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7026 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7027 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7028 return true; 7029 } 7030 7031 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7032 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7033 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7034 return true; 7035 } 7036 7037 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7038 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7039 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7040 return true; 7041 } 7042 #endif 7043 7044 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7045 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7046 #ifdef ENABLE_CLASSIC 7047 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7048 #endif 7049 if (connection->state != SENT_DISCONNECT){ 7050 connection->state = SENT_DISCONNECT; 7051 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7052 return true; 7053 } 7054 } 7055 7056 #ifdef ENABLE_CLASSIC 7057 uint16_t sniff_min_interval; 7058 switch (connection->sniff_min_interval){ 7059 case 0: 7060 break; 7061 case 0xffff: 7062 connection->sniff_min_interval = 0; 7063 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7064 return true; 7065 default: 7066 sniff_min_interval = connection->sniff_min_interval; 7067 connection->sniff_min_interval = 0; 7068 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7069 return true; 7070 } 7071 7072 if (connection->sniff_subrating_max_latency != 0xffff){ 7073 uint16_t max_latency = connection->sniff_subrating_max_latency; 7074 connection->sniff_subrating_max_latency = 0; 7075 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7076 return true; 7077 } 7078 7079 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7080 uint8_t service_type = (uint8_t) connection->qos_service_type; 7081 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7082 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); 7083 return true; 7084 } 7085 7086 if (connection->request_role != HCI_ROLE_INVALID){ 7087 hci_role_t role = connection->request_role; 7088 connection->request_role = HCI_ROLE_INVALID; 7089 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7090 return true; 7091 } 7092 #endif 7093 7094 if (connection->gap_connection_tasks != 0){ 7095 #ifdef ENABLE_CLASSIC 7096 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7097 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7098 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7099 return true; 7100 } 7101 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7102 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7103 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7104 return true; 7105 } 7106 #endif 7107 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7108 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7109 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7110 return true; 7111 } 7112 #ifdef ENABLE_BLE 7113 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7114 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7115 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7116 return true; 7117 } 7118 #endif 7119 } 7120 7121 #ifdef ENABLE_BLE 7122 switch (connection->le_con_parameter_update_state){ 7123 // response to L2CAP CON PARAMETER UPDATE REQUEST 7124 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7125 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7126 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7127 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7128 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7129 return true; 7130 case CON_PARAMETER_UPDATE_REPLY: 7131 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7132 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7133 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7134 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7135 return true; 7136 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7137 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7138 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7139 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7140 return true; 7141 default: 7142 break; 7143 } 7144 if (connection->le_phy_update_all_phys != 0xffu){ 7145 uint8_t all_phys = connection->le_phy_update_all_phys; 7146 connection->le_phy_update_all_phys = 0xff; 7147 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); 7148 return true; 7149 } 7150 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7151 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7152 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7153 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7154 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7155 return true; 7156 } 7157 #endif 7158 #endif 7159 } 7160 return false; 7161 } 7162 7163 static void hci_run(void){ 7164 7165 // stack state sub statemachines 7166 switch (hci_stack->state) { 7167 case HCI_STATE_INITIALIZING: 7168 hci_initializing_run(); 7169 break; 7170 case HCI_STATE_HALTING: 7171 hci_halting_run(); 7172 break; 7173 case HCI_STATE_FALLING_ASLEEP: 7174 hci_falling_asleep_run(); 7175 break; 7176 default: 7177 break; 7178 } 7179 7180 // allow to run after initialization to working transition 7181 if (hci_stack->state != HCI_STATE_WORKING){ 7182 return; 7183 } 7184 7185 bool done; 7186 7187 // send continuation fragments first, as they block the prepared packet buffer 7188 done = hci_run_acl_fragments(); 7189 if (done) return; 7190 7191 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7192 done = hci_run_iso_fragments(); 7193 if (done) return; 7194 #endif 7195 7196 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7197 // send host num completed packets next as they don't require num_cmd_packets > 0 7198 if (!hci_can_send_comand_packet_transport()) return; 7199 if (hci_stack->host_completed_packets){ 7200 hci_host_num_completed_packets(); 7201 return; 7202 } 7203 #endif 7204 7205 if (!hci_can_send_command_packet_now()) return; 7206 7207 // global/non-connection oriented commands 7208 7209 7210 #ifdef ENABLE_CLASSIC 7211 // general gap classic 7212 done = hci_run_general_gap_classic(); 7213 if (done) return; 7214 #endif 7215 7216 #ifdef ENABLE_BLE 7217 // general gap le 7218 done = hci_run_general_gap_le(); 7219 if (done) return; 7220 7221 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7222 // ISO related tasks, e.g. BIG create/terminate/sync 7223 done = hci_run_iso_tasks(); 7224 if (done) return; 7225 #endif 7226 #endif 7227 7228 // send pending HCI commands 7229 hci_run_general_pending_commands(); 7230 } 7231 7232 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7233 // house-keeping 7234 7235 #ifdef ENABLE_CLASSIC 7236 bd_addr_t addr; 7237 hci_connection_t * conn; 7238 #endif 7239 #ifdef ENABLE_LE_CENTRAL 7240 uint8_t initiator_filter_policy; 7241 #endif 7242 7243 uint16_t opcode = little_endian_read_16(packet, 0); 7244 switch (opcode) { 7245 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7246 hci_stack->loopback_mode = packet[3]; 7247 break; 7248 7249 #ifdef ENABLE_CLASSIC 7250 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7251 reverse_bd_addr(&packet[3], addr); 7252 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7253 7254 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7255 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7256 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7257 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7258 } 7259 7260 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7261 if (!conn) { 7262 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7263 if (!conn) { 7264 // notify client that alloc failed 7265 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7266 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7267 } 7268 conn->state = SEND_CREATE_CONNECTION; 7269 conn->role = HCI_ROLE_MASTER; 7270 } 7271 7272 log_info("conn state %u", conn->state); 7273 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7274 switch (conn->state) { 7275 // if connection active exists 7276 case OPEN: 7277 // and OPEN, emit connection complete command 7278 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7279 // packet not sent to controller 7280 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7281 case RECEIVED_DISCONNECTION_COMPLETE: 7282 // create connection triggered in disconnect complete event, let's do it now 7283 break; 7284 case SEND_CREATE_CONNECTION: 7285 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7286 if (hci_classic_operation_active()){ 7287 return ERROR_CODE_SUCCESS; 7288 } 7289 #endif 7290 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7291 break; 7292 default: 7293 // otherwise, just ignore as it is already in the open process 7294 // packet not sent to controller 7295 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7296 } 7297 conn->state = SENT_CREATE_CONNECTION; 7298 7299 // track outgoing connection 7300 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7301 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7302 break; 7303 7304 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7305 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7306 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7307 if (conn == NULL) { 7308 // neither SCO nor ACL connection for con handle 7309 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7310 } else { 7311 switch (conn->address_type){ 7312 case BD_ADDR_TYPE_ACL: 7313 // assert SCO connection does not exit 7314 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7315 return ERROR_CODE_COMMAND_DISALLOWED; 7316 } 7317 // allocate connection struct 7318 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO); 7319 if (!conn) { 7320 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7321 } 7322 conn->role = HCI_ROLE_MASTER; 7323 break; 7324 case BD_ADDR_TYPE_SCO: 7325 // update of existing SCO connection 7326 break; 7327 default: 7328 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7329 } 7330 } 7331 7332 // conn refers to hci connection of type sco now 7333 7334 conn->state = SENT_CREATE_CONNECTION; 7335 7336 // track outgoing connection to handle command status with error 7337 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7338 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7339 7340 // setup_synchronous_connection? Voice setting at offset 22 7341 // TODO: compare to current setting if sco connection already active 7342 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7343 break; 7344 7345 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7346 // get SCO connection 7347 reverse_bd_addr(&packet[3], addr); 7348 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7349 if (conn == NULL){ 7350 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7351 } 7352 7353 conn->state = ACCEPTED_CONNECTION_REQUEST; 7354 7355 // track outgoing connection to handle command status with error 7356 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7357 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7358 7359 // accept_synchronous_connection? Voice setting at offset 18 7360 // TODO: compare to current setting if sco connection already active 7361 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7362 break; 7363 #endif 7364 #endif 7365 7366 #ifdef ENABLE_BLE 7367 #ifdef ENABLE_LE_CENTRAL 7368 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7369 // white list used? 7370 initiator_filter_policy = packet[7]; 7371 switch (initiator_filter_policy) { 7372 case 0: 7373 // whitelist not used 7374 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7375 break; 7376 case 1: 7377 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7378 break; 7379 default: 7380 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7381 break; 7382 } 7383 // track outgoing connection 7384 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7385 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7386 break; 7387 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7388 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7389 // white list used? 7390 initiator_filter_policy = packet[3]; 7391 switch (initiator_filter_policy) { 7392 case 0: 7393 // whitelist not used 7394 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7395 break; 7396 case 1: 7397 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7398 break; 7399 default: 7400 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7401 break; 7402 } 7403 // track outgoing connection 7404 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7405 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7406 break; 7407 #endif 7408 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7409 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7410 break; 7411 #endif 7412 #endif /* ENABLE_BLE */ 7413 default: 7414 break; 7415 } 7416 7417 hci_stack->num_cmd_packets--; 7418 7419 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7420 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7421 if (err != 0){ 7422 return ERROR_CODE_HARDWARE_FAILURE; 7423 } 7424 return ERROR_CODE_SUCCESS; 7425 } 7426 7427 // disconnect because of security block 7428 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7429 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7430 if (!connection) return; 7431 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7432 } 7433 7434 7435 // Configure Secure Simple Pairing 7436 7437 #ifdef ENABLE_CLASSIC 7438 7439 // enable will enable SSP during init 7440 void gap_ssp_set_enable(int enable){ 7441 hci_stack->ssp_enable = enable; 7442 } 7443 7444 static int hci_local_ssp_activated(void){ 7445 return gap_ssp_supported() && hci_stack->ssp_enable; 7446 } 7447 7448 // if set, BTstack will respond to io capability request using authentication requirement 7449 void gap_ssp_set_io_capability(int io_capability){ 7450 hci_stack->ssp_io_capability = io_capability; 7451 } 7452 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7453 hci_stack->ssp_authentication_requirement = authentication_requirement; 7454 } 7455 7456 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7457 void gap_ssp_set_auto_accept(int auto_accept){ 7458 hci_stack->ssp_auto_accept = auto_accept; 7459 } 7460 7461 void gap_secure_connections_enable(bool enable){ 7462 hci_stack->secure_connections_enable = enable; 7463 } 7464 bool gap_secure_connections_active(void){ 7465 return hci_stack->secure_connections_active; 7466 } 7467 7468 #endif 7469 7470 // va_list part of hci_send_cmd 7471 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7472 if (!hci_can_send_command_packet_now()){ 7473 log_error("hci_send_cmd called but cannot send packet now"); 7474 return ERROR_CODE_COMMAND_DISALLOWED; 7475 } 7476 7477 // for HCI INITIALIZATION 7478 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7479 hci_stack->last_cmd_opcode = cmd->opcode; 7480 7481 hci_reserve_packet_buffer(); 7482 uint8_t * packet = hci_stack->hci_packet_buffer; 7483 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7484 uint8_t status = hci_send_cmd_packet(packet, size); 7485 7486 // release packet buffer on error or for synchronous transport implementations 7487 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7488 hci_release_packet_buffer(); 7489 hci_emit_transport_packet_sent(); 7490 } 7491 7492 return status; 7493 } 7494 7495 /** 7496 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7497 */ 7498 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7499 va_list argptr; 7500 va_start(argptr, cmd); 7501 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7502 va_end(argptr); 7503 return status; 7504 } 7505 7506 // Create various non-HCI events. 7507 // TODO: generalize, use table similar to hci_create_command 7508 7509 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7510 // dump packet 7511 if (dump) { 7512 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7513 } 7514 7515 // dispatch to all event handlers 7516 btstack_linked_list_iterator_t it; 7517 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7518 while (btstack_linked_list_iterator_has_next(&it)){ 7519 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7520 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7521 } 7522 } 7523 7524 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7525 if (!hci_stack->acl_packet_handler) return; 7526 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7527 } 7528 7529 #ifdef ENABLE_CLASSIC 7530 static void hci_notify_if_sco_can_send_now(void){ 7531 // notify SCO sender if waiting 7532 if (!hci_stack->sco_waiting_for_can_send_now) return; 7533 if (hci_can_send_sco_packet_now()){ 7534 hci_stack->sco_waiting_for_can_send_now = 0; 7535 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7536 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7537 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7538 } 7539 } 7540 7541 // parsing end emitting has been merged to reduce code size 7542 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7543 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7544 7545 uint8_t * eir_data; 7546 ad_context_t context; 7547 const uint8_t * name; 7548 uint8_t name_len; 7549 7550 if (size < 3) return; 7551 7552 int event_type = hci_event_packet_get_type(packet); 7553 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7554 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7555 7556 switch (event_type){ 7557 case HCI_EVENT_INQUIRY_RESULT: 7558 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7559 if (size != (3 + (num_responses * 14))) return; 7560 break; 7561 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7562 if (size != 257) return; 7563 if (num_responses != 1) return; 7564 break; 7565 default: 7566 return; 7567 } 7568 7569 // event[1] is set at the end 7570 int i; 7571 for (i=0; i<num_responses;i++){ 7572 memset(event, 0, sizeof(event)); 7573 event[0] = GAP_EVENT_INQUIRY_RESULT; 7574 uint8_t event_size = 27; // if name is not set by EIR 7575 7576 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7577 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7578 (void)memcpy(&event[9], 7579 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7580 3); // class of device 7581 (void)memcpy(&event[12], 7582 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7583 2); // clock offset 7584 7585 switch (event_type){ 7586 case HCI_EVENT_INQUIRY_RESULT: 7587 // 14,15,16,17 = 0, size 18 7588 break; 7589 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7590 event[14] = 1; 7591 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7592 // 16,17 = 0, size 18 7593 break; 7594 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7595 event[14] = 1; 7596 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7597 // EIR packets only contain a single inquiry response 7598 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7599 name = NULL; 7600 // Iterate over EIR data 7601 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7602 uint8_t data_type = ad_iterator_get_data_type(&context); 7603 uint8_t data_size = ad_iterator_get_data_len(&context); 7604 const uint8_t * data = ad_iterator_get_data(&context); 7605 // Prefer Complete Local Name over Shortened Local Name 7606 switch (data_type){ 7607 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7608 if (name) continue; 7609 /* fall through */ 7610 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7611 name = data; 7612 name_len = data_size; 7613 break; 7614 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7615 if (data_size != 8) break; 7616 event[16] = 1; 7617 memcpy(&event[17], data, 8); 7618 break; 7619 default: 7620 break; 7621 } 7622 } 7623 if (name){ 7624 event[25] = 1; 7625 // truncate name if needed 7626 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7627 event[26] = len; 7628 (void)memcpy(&event[27], name, len); 7629 event_size += len; 7630 } 7631 break; 7632 default: 7633 return; 7634 } 7635 event[1] = event_size - 2; 7636 hci_emit_event(event, event_size, 1); 7637 } 7638 } 7639 #endif 7640 7641 void hci_emit_state(void){ 7642 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7643 uint8_t event[3]; 7644 event[0] = BTSTACK_EVENT_STATE; 7645 event[1] = sizeof(event) - 2u; 7646 event[2] = hci_stack->state; 7647 hci_emit_event(event, sizeof(event), 1); 7648 } 7649 7650 #ifdef ENABLE_CLASSIC 7651 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7652 uint8_t event[13]; 7653 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7654 event[1] = sizeof(event) - 2; 7655 event[2] = status; 7656 little_endian_store_16(event, 3, con_handle); 7657 reverse_bd_addr(address, &event[5]); 7658 event[11] = 1; // ACL connection 7659 event[12] = 0; // encryption disabled 7660 hci_emit_event(event, sizeof(event), 1); 7661 } 7662 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7663 if (disable_l2cap_timeouts) return; 7664 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7665 uint8_t event[4]; 7666 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7667 event[1] = sizeof(event) - 2; 7668 little_endian_store_16(event, 2, conn->con_handle); 7669 hci_emit_event(event, sizeof(event), 1); 7670 } 7671 #endif 7672 7673 #ifdef ENABLE_BLE 7674 #ifdef ENABLE_LE_CENTRAL 7675 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){ 7676 uint8_t event[21]; 7677 event[0] = HCI_EVENT_LE_META; 7678 event[1] = sizeof(event) - 2u; 7679 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7680 event[3] = status; 7681 little_endian_store_16(event, 4, con_handle); 7682 event[6] = 0; // TODO: role 7683 event[7] = address_type; 7684 reverse_bd_addr(address, &event[8]); 7685 little_endian_store_16(event, 14, 0); // interval 7686 little_endian_store_16(event, 16, 0); // latency 7687 little_endian_store_16(event, 18, 0); // supervision timeout 7688 event[20] = 0; // master clock accuracy 7689 hci_emit_event(event, sizeof(event), 1); 7690 } 7691 #endif 7692 #endif 7693 7694 static void hci_emit_transport_packet_sent(void){ 7695 // notify upper stack that it might be possible to send again 7696 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7697 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7698 } 7699 7700 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7701 uint8_t event[6]; 7702 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7703 event[1] = sizeof(event) - 2u; 7704 event[2] = 0; // status = OK 7705 little_endian_store_16(event, 3, con_handle); 7706 event[5] = reason; 7707 hci_emit_event(event, sizeof(event), 1); 7708 } 7709 7710 static void hci_emit_nr_connections_changed(void){ 7711 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7712 uint8_t event[3]; 7713 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7714 event[1] = sizeof(event) - 2u; 7715 event[2] = nr_hci_connections(); 7716 hci_emit_event(event, sizeof(event), 1); 7717 } 7718 7719 static void hci_emit_hci_open_failed(void){ 7720 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7721 uint8_t event[2]; 7722 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7723 event[1] = sizeof(event) - 2u; 7724 hci_emit_event(event, sizeof(event), 1); 7725 } 7726 7727 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7728 log_info("hci_emit_dedicated_bonding_result %u ", status); 7729 uint8_t event[9]; 7730 int pos = 0; 7731 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7732 event[pos++] = sizeof(event) - 2u; 7733 event[pos++] = status; 7734 reverse_bd_addr(address, &event[pos]); 7735 hci_emit_event(event, sizeof(event), 1); 7736 } 7737 7738 7739 #ifdef ENABLE_CLASSIC 7740 7741 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7742 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7743 uint8_t event[5]; 7744 int pos = 0; 7745 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7746 event[pos++] = sizeof(event) - 2; 7747 little_endian_store_16(event, 2, con_handle); 7748 pos += 2; 7749 event[pos++] = level; 7750 hci_emit_event(event, sizeof(event), 1); 7751 } 7752 7753 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7754 if (!connection) return LEVEL_0; 7755 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7756 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7757 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7758 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7759 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7760 // LEVEL 4 always requires 128 bit encrytion key size 7761 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7762 security_level = LEVEL_3; 7763 } 7764 return security_level; 7765 } 7766 7767 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7768 uint8_t event[4]; 7769 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7770 event[1] = sizeof(event) - 2; 7771 event[2] = discoverable; 7772 event[3] = connectable; 7773 hci_emit_event(event, sizeof(event), 1); 7774 } 7775 7776 // query if remote side supports eSCO 7777 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7778 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7779 if (!connection) return false; 7780 return (connection->remote_supported_features[0] & 1) != 0; 7781 } 7782 7783 static bool hci_ssp_supported(hci_connection_t * connection){ 7784 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7785 return (connection->bonding_flags & mask) == mask; 7786 } 7787 7788 // query if remote side supports SSP 7789 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7790 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7791 if (!connection) return false; 7792 return hci_ssp_supported(connection) ? 1 : 0; 7793 } 7794 7795 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7796 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7797 } 7798 7799 /** 7800 * Check if remote supported features query has completed 7801 */ 7802 bool hci_remote_features_available(hci_con_handle_t handle){ 7803 hci_connection_t * connection = hci_connection_for_handle(handle); 7804 if (!connection) return false; 7805 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7806 } 7807 7808 /** 7809 * Trigger remote supported features query 7810 */ 7811 7812 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7813 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7814 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7815 } 7816 } 7817 7818 void hci_remote_features_query(hci_con_handle_t con_handle){ 7819 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7820 if (!connection) return; 7821 hci_trigger_remote_features_for_connection(connection); 7822 hci_run(); 7823 } 7824 7825 // GAP API 7826 /** 7827 * @bbrief enable/disable bonding. default is enabled 7828 * @praram enabled 7829 */ 7830 void gap_set_bondable_mode(int enable){ 7831 hci_stack->bondable = enable ? 1 : 0; 7832 } 7833 /** 7834 * @brief Get bondable mode. 7835 * @return 1 if bondable 7836 */ 7837 int gap_get_bondable_mode(void){ 7838 return hci_stack->bondable; 7839 } 7840 7841 /** 7842 * @brief map link keys to security levels 7843 */ 7844 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7845 switch (link_key_type){ 7846 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7847 return LEVEL_4; 7848 case COMBINATION_KEY: 7849 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7850 return LEVEL_3; 7851 default: 7852 return LEVEL_2; 7853 } 7854 } 7855 7856 /** 7857 * @brief map link keys to secure connection yes/no 7858 */ 7859 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7860 switch (link_key_type){ 7861 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7862 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7863 return true; 7864 default: 7865 return false; 7866 } 7867 } 7868 7869 /** 7870 * @brief map link keys to authenticated 7871 */ 7872 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7873 switch (link_key_type){ 7874 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7875 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7876 return true; 7877 default: 7878 return false; 7879 } 7880 } 7881 7882 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7883 log_info("gap_mitm_protection_required_for_security_level %u", level); 7884 return level > LEVEL_2; 7885 } 7886 7887 /** 7888 * @brief get current security level 7889 */ 7890 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7891 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7892 if (!connection) return LEVEL_0; 7893 return gap_security_level_for_connection(connection); 7894 } 7895 7896 /** 7897 * @brief request connection to device to 7898 * @result GAP_AUTHENTICATION_RESULT 7899 */ 7900 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7901 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7902 if (!connection){ 7903 hci_emit_security_level(con_handle, LEVEL_0); 7904 return; 7905 } 7906 7907 btstack_assert(hci_is_le_connection(connection) == false); 7908 7909 // 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) 7910 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7911 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7912 requested_level = LEVEL_4; 7913 } 7914 7915 gap_security_level_t current_level = gap_security_level(con_handle); 7916 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7917 requested_level, connection->requested_security_level, current_level); 7918 7919 // authentication active if authentication request was sent or planned level > 0 7920 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7921 if (authentication_active){ 7922 // authentication already active 7923 if (connection->requested_security_level < requested_level){ 7924 // increase requested level as new level is higher 7925 // TODO: handle re-authentication when done 7926 connection->requested_security_level = requested_level; 7927 } 7928 } else { 7929 // no request active, notify if security sufficient 7930 if (requested_level <= current_level){ 7931 hci_emit_security_level(con_handle, current_level); 7932 return; 7933 } 7934 7935 // store request 7936 connection->requested_security_level = requested_level; 7937 7938 // start to authenticate connection 7939 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7940 7941 // request remote features if not already active, also trigger hci_run 7942 hci_remote_features_query(con_handle); 7943 } 7944 } 7945 7946 /** 7947 * @brief start dedicated bonding with device. disconnect after bonding 7948 * @param device 7949 * @param request MITM protection 7950 * @result GAP_DEDICATED_BONDING_COMPLETE 7951 */ 7952 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7953 7954 // create connection state machine 7955 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7956 7957 if (!connection){ 7958 return BTSTACK_MEMORY_ALLOC_FAILED; 7959 } 7960 7961 // delete linkn key 7962 gap_drop_link_key_for_bd_addr(device); 7963 7964 // configure LEVEL_2/3, dedicated bonding 7965 connection->state = SEND_CREATE_CONNECTION; 7966 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7967 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7968 connection->bonding_flags = BONDING_DEDICATED; 7969 7970 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7971 7972 // handle: connnection failure (connection complete != ok) 7973 // handle: authentication failure 7974 // handle: disconnect on done 7975 7976 hci_run(); 7977 7978 return 0; 7979 } 7980 7981 void gap_set_local_name(const char * local_name){ 7982 hci_stack->local_name = local_name; 7983 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7984 // also update EIR if not set by user 7985 if (hci_stack->eir_data == NULL){ 7986 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7987 } 7988 hci_run(); 7989 } 7990 #endif 7991 7992 7993 #ifdef ENABLE_BLE 7994 7995 #ifdef ENABLE_LE_CENTRAL 7996 void gap_start_scan(void){ 7997 hci_stack->le_scanning_enabled = true; 7998 hci_run(); 7999 } 8000 8001 void gap_stop_scan(void){ 8002 hci_stack->le_scanning_enabled = false; 8003 hci_run(); 8004 } 8005 8006 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8007 hci_stack->le_scan_type = scan_type; 8008 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8009 hci_stack->le_scan_interval = scan_interval; 8010 hci_stack->le_scan_window = scan_window; 8011 hci_stack->le_scanning_param_update = true; 8012 hci_run(); 8013 } 8014 8015 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8016 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8017 } 8018 8019 void gap_set_scan_duplicate_filter(bool enabled){ 8020 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8021 } 8022 8023 void gap_set_scan_phys(uint8_t phys){ 8024 // LE Coded and LE 1M PHY 8025 hci_stack->le_scan_phys = phys & 0x05; 8026 } 8027 8028 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8029 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8030 if (!conn){ 8031 // disallow if le connection is already outgoing 8032 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8033 log_error("le connection already active"); 8034 return ERROR_CODE_COMMAND_DISALLOWED; 8035 } 8036 8037 log_info("gap_connect: no connection exists yet, creating context"); 8038 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 8039 if (!conn){ 8040 // notify client that alloc failed 8041 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8042 log_info("gap_connect: failed to alloc hci_connection_t"); 8043 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8044 } 8045 8046 // set le connecting state 8047 if (hci_is_le_connection_type(addr_type)){ 8048 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8049 } 8050 8051 conn->state = SEND_CREATE_CONNECTION; 8052 log_info("gap_connect: send create connection next"); 8053 hci_run(); 8054 return ERROR_CODE_SUCCESS; 8055 } 8056 8057 if (!hci_is_le_connection(conn) || 8058 (conn->state == SEND_CREATE_CONNECTION) || 8059 (conn->state == SENT_CREATE_CONNECTION)) { 8060 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8061 log_error("gap_connect: classic connection or connect is already being created"); 8062 return GATT_CLIENT_IN_WRONG_STATE; 8063 } 8064 8065 // check if connection was just disconnected 8066 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8067 log_info("gap_connect: send create connection (again)"); 8068 conn->state = SEND_CREATE_CONNECTION; 8069 hci_run(); 8070 return ERROR_CODE_SUCCESS; 8071 } 8072 8073 log_info("gap_connect: context exists with state %u", conn->state); 8074 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8075 hci_run(); 8076 return ERROR_CODE_SUCCESS; 8077 } 8078 8079 // @assumption: only a single outgoing LE Connection exists 8080 static hci_connection_t * gap_get_outgoing_connection(void){ 8081 btstack_linked_item_t *it; 8082 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8083 hci_connection_t * conn = (hci_connection_t *) it; 8084 if (!hci_is_le_connection(conn)) continue; 8085 switch (conn->state){ 8086 case SEND_CREATE_CONNECTION: 8087 case SENT_CREATE_CONNECTION: 8088 return conn; 8089 default: 8090 break; 8091 }; 8092 } 8093 return NULL; 8094 } 8095 8096 uint8_t gap_connect_cancel(void){ 8097 hci_connection_t * conn; 8098 switch (hci_stack->le_connecting_request){ 8099 case LE_CONNECTING_IDLE: 8100 break; 8101 case LE_CONNECTING_WHITELIST: 8102 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8103 hci_run(); 8104 break; 8105 case LE_CONNECTING_DIRECT: 8106 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8107 conn = gap_get_outgoing_connection(); 8108 if (conn == NULL){ 8109 hci_run(); 8110 } else { 8111 switch (conn->state){ 8112 case SEND_CREATE_CONNECTION: 8113 // skip sending create connection and emit event instead 8114 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8115 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8116 btstack_memory_hci_connection_free( conn ); 8117 break; 8118 case SENT_CREATE_CONNECTION: 8119 // let hci_run_general_gap_le cancel outgoing connection 8120 hci_run(); 8121 break; 8122 default: 8123 break; 8124 } 8125 } 8126 break; 8127 default: 8128 btstack_unreachable(); 8129 break; 8130 } 8131 return ERROR_CODE_SUCCESS; 8132 } 8133 8134 /** 8135 * @brief Set connection parameters for outgoing connections 8136 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8137 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8138 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8139 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8140 * @param conn_latency, default: 4 8141 * @param supervision_timeout (unit: 10ms), default: 720 ms 8142 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8143 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8144 */ 8145 8146 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8147 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8148 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8149 hci_stack->le_connection_scan_interval = conn_scan_interval; 8150 hci_stack->le_connection_scan_window = conn_scan_window; 8151 hci_stack->le_connection_interval_min = conn_interval_min; 8152 hci_stack->le_connection_interval_max = conn_interval_max; 8153 hci_stack->le_connection_latency = conn_latency; 8154 hci_stack->le_supervision_timeout = supervision_timeout; 8155 hci_stack->le_minimum_ce_length = min_ce_length; 8156 hci_stack->le_maximum_ce_length = max_ce_length; 8157 } 8158 8159 void gap_set_connection_phys(uint8_t phys){ 8160 // LE Coded, LE 1M, LE 2M PHY 8161 hci_stack->le_connection_phys = phys & 7; 8162 } 8163 8164 #endif 8165 8166 /** 8167 * @brief Updates the connection parameters for a given LE connection 8168 * @param handle 8169 * @param conn_interval_min (unit: 1.25ms) 8170 * @param conn_interval_max (unit: 1.25ms) 8171 * @param conn_latency 8172 * @param supervision_timeout (unit: 10ms) 8173 * @return 0 if ok 8174 */ 8175 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8176 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8177 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8178 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8179 connection->le_conn_interval_min = conn_interval_min; 8180 connection->le_conn_interval_max = conn_interval_max; 8181 connection->le_conn_latency = conn_latency; 8182 connection->le_supervision_timeout = supervision_timeout; 8183 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8184 hci_run(); 8185 return 0; 8186 } 8187 8188 /** 8189 * @brief Request an update of the connection parameter for a given LE connection 8190 * @param handle 8191 * @param conn_interval_min (unit: 1.25ms) 8192 * @param conn_interval_max (unit: 1.25ms) 8193 * @param conn_latency 8194 * @param supervision_timeout (unit: 10ms) 8195 * @return 0 if ok 8196 */ 8197 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8198 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8199 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8200 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8201 connection->le_conn_interval_min = conn_interval_min; 8202 connection->le_conn_interval_max = conn_interval_max; 8203 connection->le_conn_latency = conn_latency; 8204 connection->le_supervision_timeout = supervision_timeout; 8205 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8206 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8207 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8208 return 0; 8209 } 8210 8211 #ifdef ENABLE_LE_PERIPHERAL 8212 8213 /** 8214 * @brief Set Advertisement Data 8215 * @param advertising_data_length 8216 * @param advertising_data (max 31 octets) 8217 * @note data is not copied, pointer has to stay valid 8218 */ 8219 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8220 hci_stack->le_advertisements_data_len = advertising_data_length; 8221 hci_stack->le_advertisements_data = advertising_data; 8222 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8223 hci_run(); 8224 } 8225 8226 /** 8227 * @brief Set Scan Response Data 8228 * @param advertising_data_length 8229 * @param advertising_data (max 31 octets) 8230 * @note data is not copied, pointer has to stay valid 8231 */ 8232 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8233 hci_stack->le_scan_response_data_len = scan_response_data_length; 8234 hci_stack->le_scan_response_data = scan_response_data; 8235 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8236 hci_run(); 8237 } 8238 8239 /** 8240 * @brief Set Advertisement Parameters 8241 * @param adv_int_min 8242 * @param adv_int_max 8243 * @param adv_type 8244 * @param direct_address_type 8245 * @param direct_address 8246 * @param channel_map 8247 * @param filter_policy 8248 * 8249 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8250 */ 8251 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8252 uint8_t direct_address_typ, bd_addr_t direct_address, 8253 uint8_t channel_map, uint8_t filter_policy) { 8254 8255 hci_stack->le_advertisements_interval_min = adv_int_min; 8256 hci_stack->le_advertisements_interval_max = adv_int_max; 8257 hci_stack->le_advertisements_type = adv_type; 8258 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8259 hci_stack->le_advertisements_channel_map = channel_map; 8260 hci_stack->le_advertisements_filter_policy = filter_policy; 8261 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8262 6); 8263 8264 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8265 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8266 hci_run(); 8267 } 8268 8269 /** 8270 * @brief Enable/Disable Advertisements 8271 * @param enabled 8272 */ 8273 void gap_advertisements_enable(int enabled){ 8274 if (enabled == 0){ 8275 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8276 } else { 8277 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8278 } 8279 hci_update_advertisements_enabled_for_current_roles(); 8280 hci_run(); 8281 } 8282 8283 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8284 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8285 btstack_linked_list_iterator_t it; 8286 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8287 while (btstack_linked_list_iterator_has_next(&it)){ 8288 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8289 if ( item->advertising_handle == advertising_handle ) { 8290 return item; 8291 } 8292 } 8293 return NULL; 8294 } 8295 8296 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8297 // find free advertisement handle 8298 uint8_t advertisement_handle; 8299 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8300 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8301 } 8302 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8303 // clear 8304 memset(storage, 0, sizeof(le_advertising_set_t)); 8305 // copy params 8306 storage->advertising_handle = advertisement_handle; 8307 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8308 // add to list 8309 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8310 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8311 *out_advertising_handle = advertisement_handle; 8312 // set tasks and start 8313 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8314 hci_run(); 8315 return ERROR_CODE_SUCCESS; 8316 } 8317 8318 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8319 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8320 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8321 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8322 // set tasks and start 8323 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8324 hci_run(); 8325 return ERROR_CODE_SUCCESS; 8326 } 8327 8328 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8329 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8330 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8331 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8332 return ERROR_CODE_SUCCESS; 8333 } 8334 8335 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8336 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8337 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8338 memcpy(advertising_set->random_address, random_address, 6); 8339 // set tasks and start 8340 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8341 hci_run(); 8342 return ERROR_CODE_SUCCESS; 8343 } 8344 8345 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8346 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8347 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8348 advertising_set->adv_data = advertising_data; 8349 advertising_set->adv_data_len = advertising_data_length; 8350 // set tasks and start 8351 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8352 hci_run(); 8353 return ERROR_CODE_SUCCESS; 8354 } 8355 8356 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){ 8357 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8358 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8359 advertising_set->scan_data = scan_response_data; 8360 advertising_set->scan_data_len = scan_response_data_length; 8361 // set tasks and start 8362 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8363 hci_run(); 8364 return ERROR_CODE_SUCCESS; 8365 } 8366 8367 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8368 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8369 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8370 advertising_set->enable_timeout = timeout; 8371 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8372 // set tasks and start 8373 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8374 hci_run(); 8375 return ERROR_CODE_SUCCESS; 8376 } 8377 8378 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8379 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8380 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8381 // set tasks and start 8382 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8383 hci_run(); 8384 return ERROR_CODE_SUCCESS; 8385 } 8386 8387 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8388 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8389 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8390 // set tasks and start 8391 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8392 hci_run(); 8393 return ERROR_CODE_SUCCESS; 8394 } 8395 8396 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8397 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8398 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8399 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8400 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8401 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8402 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8403 // set tasks and start 8404 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8405 hci_run(); 8406 return ERROR_CODE_SUCCESS; 8407 } 8408 8409 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8410 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8411 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8412 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8413 return ERROR_CODE_SUCCESS; 8414 } 8415 8416 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8417 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8418 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8419 advertising_set->periodic_data = periodic_data; 8420 advertising_set->periodic_data_len = periodic_data_length; 8421 // set tasks and start 8422 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8423 hci_run(); 8424 return ERROR_CODE_SUCCESS; 8425 } 8426 8427 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8428 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8429 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8430 // set tasks and start 8431 advertising_set->periodic_include_adi = include_adi; 8432 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8433 hci_run(); 8434 return ERROR_CODE_SUCCESS; 8435 } 8436 8437 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8438 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8439 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8440 // set tasks and start 8441 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8442 hci_run(); 8443 return ERROR_CODE_SUCCESS; 8444 } 8445 8446 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8447 hci_stack->le_past_mode = mode; 8448 hci_stack->le_past_skip = skip; 8449 hci_stack->le_past_sync_timeout = sync_timeout; 8450 hci_stack->le_past_cte_type = cte_type; 8451 hci_stack->le_past_set_default_params = true; 8452 hci_run(); 8453 return ERROR_CODE_SUCCESS; 8454 } 8455 8456 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8457 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8458 if (hci_connection == NULL){ 8459 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8460 } 8461 hci_connection->le_past_sync_handle = sync_handle; 8462 hci_connection->le_past_service_data = service_data; 8463 hci_run(); 8464 return ERROR_CODE_SUCCESS; 8465 } 8466 8467 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8468 8469 #endif 8470 8471 #endif 8472 8473 void hci_le_set_own_address_type(uint8_t own_address_type){ 8474 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8475 if (own_address_type == hci_stack->le_own_addr_type) return; 8476 hci_stack->le_own_addr_type = own_address_type; 8477 8478 #ifdef ENABLE_LE_PERIPHERAL 8479 // update advertisement parameters, too 8480 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8481 hci_run(); 8482 #endif 8483 #ifdef ENABLE_LE_CENTRAL 8484 // note: we don't update scan parameters or modify ongoing connection attempts 8485 #endif 8486 } 8487 8488 void hci_le_random_address_set(const bd_addr_t random_address){ 8489 memcpy(hci_stack->le_random_address, random_address, 6); 8490 hci_stack->le_random_address_set = true; 8491 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8492 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8493 if (hci_extended_advertising_supported()){ 8494 // force advertising set creation for LE Set Advertising Set Random Address 8495 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8496 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8497 } 8498 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8499 } 8500 #endif 8501 hci_run(); 8502 } 8503 8504 #endif 8505 8506 uint8_t gap_disconnect(hci_con_handle_t handle){ 8507 hci_connection_t * conn = hci_connection_for_handle(handle); 8508 if (!conn){ 8509 hci_emit_disconnection_complete(handle, 0); 8510 return 0; 8511 } 8512 // ignore if already disconnected 8513 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8514 return 0; 8515 } 8516 conn->state = SEND_DISCONNECT; 8517 hci_run(); 8518 return 0; 8519 } 8520 8521 int gap_read_rssi(hci_con_handle_t con_handle){ 8522 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8523 if (hci_connection == NULL) return 0; 8524 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8525 hci_run(); 8526 return 1; 8527 } 8528 8529 /** 8530 * @brief Get connection type 8531 * @param con_handle 8532 * @result connection_type 8533 */ 8534 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8535 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8536 if (!conn) return GAP_CONNECTION_INVALID; 8537 switch (conn->address_type){ 8538 case BD_ADDR_TYPE_LE_PUBLIC: 8539 case BD_ADDR_TYPE_LE_RANDOM: 8540 return GAP_CONNECTION_LE; 8541 case BD_ADDR_TYPE_SCO: 8542 return GAP_CONNECTION_SCO; 8543 case BD_ADDR_TYPE_ACL: 8544 return GAP_CONNECTION_ACL; 8545 default: 8546 return GAP_CONNECTION_INVALID; 8547 } 8548 } 8549 8550 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8551 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8552 if (!conn) return HCI_ROLE_INVALID; 8553 return (hci_role_t) conn->role; 8554 } 8555 8556 8557 #ifdef ENABLE_CLASSIC 8558 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8559 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8560 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8561 conn->request_role = role; 8562 hci_run(); 8563 return ERROR_CODE_SUCCESS; 8564 } 8565 #endif 8566 8567 #ifdef ENABLE_BLE 8568 8569 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){ 8570 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8571 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8572 8573 conn->le_phy_update_all_phys = all_phys; 8574 conn->le_phy_update_tx_phys = tx_phys; 8575 conn->le_phy_update_rx_phys = rx_phys; 8576 conn->le_phy_update_phy_options = phy_options; 8577 8578 hci_run(); 8579 8580 return 0; 8581 } 8582 8583 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8584 // check if already in list 8585 btstack_linked_list_iterator_t it; 8586 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8587 while (btstack_linked_list_iterator_has_next(&it)) { 8588 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8589 if (entry->address_type != address_type) { 8590 continue; 8591 } 8592 if (memcmp(entry->address, address, 6) != 0) { 8593 continue; 8594 } 8595 // disallow if already scheduled to add 8596 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8597 return ERROR_CODE_COMMAND_DISALLOWED; 8598 } 8599 // still on controller, but scheduled to remove -> re-add 8600 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8601 return ERROR_CODE_SUCCESS; 8602 } 8603 // alloc and add to list 8604 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8605 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8606 entry->address_type = address_type; 8607 (void)memcpy(entry->address, address, 6); 8608 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8609 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8610 return ERROR_CODE_SUCCESS; 8611 } 8612 8613 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8614 btstack_linked_list_iterator_t it; 8615 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8616 while (btstack_linked_list_iterator_has_next(&it)){ 8617 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8618 if (entry->address_type != address_type) { 8619 continue; 8620 } 8621 if (memcmp(entry->address, address, 6) != 0) { 8622 continue; 8623 } 8624 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8625 // remove from controller if already present 8626 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8627 } else { 8628 // directly remove entry from whitelist 8629 btstack_linked_list_iterator_remove(&it); 8630 btstack_memory_whitelist_entry_free(entry); 8631 } 8632 return ERROR_CODE_SUCCESS; 8633 } 8634 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8635 } 8636 8637 static void hci_whitelist_clear(void){ 8638 btstack_linked_list_iterator_t it; 8639 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8640 while (btstack_linked_list_iterator_has_next(&it)){ 8641 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8642 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8643 // remove from controller if already present 8644 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8645 continue; 8646 } 8647 // directly remove entry from whitelist 8648 btstack_linked_list_iterator_remove(&it); 8649 btstack_memory_whitelist_entry_free(entry); 8650 } 8651 } 8652 8653 /** 8654 * @brief Clear Whitelist 8655 * @return 0 if ok 8656 */ 8657 uint8_t gap_whitelist_clear(void){ 8658 hci_whitelist_clear(); 8659 hci_run(); 8660 return ERROR_CODE_SUCCESS; 8661 } 8662 8663 /** 8664 * @brief Add Device to Whitelist 8665 * @param address_typ 8666 * @param address 8667 * @return 0 if ok 8668 */ 8669 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8670 uint8_t status = hci_whitelist_add(address_type, address); 8671 if (status){ 8672 return status; 8673 } 8674 hci_run(); 8675 return ERROR_CODE_SUCCESS; 8676 } 8677 8678 /** 8679 * @brief Remove Device from Whitelist 8680 * @param address_typ 8681 * @param address 8682 * @return 0 if ok 8683 */ 8684 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8685 uint8_t status = hci_whitelist_remove(address_type, address); 8686 if (status){ 8687 return status; 8688 } 8689 hci_run(); 8690 return ERROR_CODE_SUCCESS; 8691 } 8692 8693 #ifdef ENABLE_LE_CENTRAL 8694 /** 8695 * @brief Connect with Whitelist 8696 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8697 * @return - if ok 8698 */ 8699 uint8_t gap_connect_with_whitelist(void){ 8700 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8701 return ERROR_CODE_COMMAND_DISALLOWED; 8702 } 8703 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8704 hci_run(); 8705 return ERROR_CODE_SUCCESS; 8706 } 8707 8708 /** 8709 * @brief Auto Connection Establishment - Start Connecting to device 8710 * @param address_typ 8711 * @param address 8712 * @return 0 if ok 8713 */ 8714 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8715 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8716 return ERROR_CODE_COMMAND_DISALLOWED; 8717 } 8718 8719 uint8_t status = hci_whitelist_add(address_type, address); 8720 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8721 return status; 8722 } 8723 8724 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8725 8726 hci_run(); 8727 return ERROR_CODE_SUCCESS; 8728 } 8729 8730 /** 8731 * @brief Auto Connection Establishment - Stop Connecting to device 8732 * @param address_typ 8733 * @param address 8734 * @return 0 if ok 8735 */ 8736 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8737 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8738 return ERROR_CODE_COMMAND_DISALLOWED; 8739 } 8740 8741 hci_whitelist_remove(address_type, address); 8742 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8743 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8744 } 8745 hci_run(); 8746 return 0; 8747 } 8748 8749 /** 8750 * @brief Auto Connection Establishment - Stop everything 8751 * @note Convenience function to stop all active auto connection attempts 8752 */ 8753 uint8_t gap_auto_connection_stop_all(void){ 8754 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8755 return ERROR_CODE_COMMAND_DISALLOWED; 8756 } 8757 hci_whitelist_clear(); 8758 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8759 hci_run(); 8760 return ERROR_CODE_SUCCESS; 8761 } 8762 8763 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8764 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8765 if (!conn) return 0; 8766 return conn->le_connection_interval; 8767 } 8768 #endif 8769 #endif 8770 8771 #ifdef ENABLE_CLASSIC 8772 /** 8773 * @brief Set Extended Inquiry Response data 8774 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8775 * @note has to be done before stack starts up 8776 */ 8777 void gap_set_extended_inquiry_response(const uint8_t * data){ 8778 hci_stack->eir_data = data; 8779 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8780 hci_run(); 8781 } 8782 8783 /** 8784 * @brief Start GAP Classic Inquiry 8785 * @param duration in 1.28s units 8786 * @return 0 if ok 8787 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8788 */ 8789 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8790 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8791 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8792 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8793 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8794 } 8795 hci_stack->inquiry_state = duration_in_1280ms_units; 8796 hci_stack->inquiry_max_period_length = 0; 8797 hci_stack->inquiry_min_period_length = 0; 8798 hci_run(); 8799 return 0; 8800 } 8801 8802 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8803 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8804 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8805 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8806 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8807 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8808 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8809 8810 hci_stack->inquiry_state = duration; 8811 hci_stack->inquiry_max_period_length = max_period_length; 8812 hci_stack->inquiry_min_period_length = min_period_length; 8813 hci_run(); 8814 return 0; 8815 } 8816 8817 /** 8818 * @brief Stop GAP Classic Inquiry 8819 * @return 0 if ok 8820 */ 8821 int gap_inquiry_stop(void){ 8822 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8823 // emit inquiry complete event, before it even started 8824 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8825 hci_emit_event(event, sizeof(event), 1); 8826 return 0; 8827 } 8828 switch (hci_stack->inquiry_state){ 8829 case GAP_INQUIRY_STATE_ACTIVE: 8830 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8831 hci_run(); 8832 return ERROR_CODE_SUCCESS; 8833 case GAP_INQUIRY_STATE_PERIODIC: 8834 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8835 hci_run(); 8836 return ERROR_CODE_SUCCESS; 8837 default: 8838 return ERROR_CODE_COMMAND_DISALLOWED; 8839 } 8840 } 8841 8842 void gap_inquiry_set_lap(uint32_t lap){ 8843 hci_stack->inquiry_lap = lap; 8844 } 8845 8846 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8847 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8848 hci_stack->inquiry_scan_window = inquiry_scan_window; 8849 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8850 hci_run(); 8851 } 8852 8853 8854 /** 8855 * @brief Remote Name Request 8856 * @param addr 8857 * @param page_scan_repetition_mode 8858 * @param clock_offset only used when bit 15 is set 8859 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8860 */ 8861 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8862 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8863 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8864 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8865 hci_stack->remote_name_clock_offset = clock_offset; 8866 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8867 hci_run(); 8868 return 0; 8869 } 8870 8871 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8872 hci_stack->gap_pairing_state = state; 8873 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8874 hci_run(); 8875 return 0; 8876 } 8877 8878 /** 8879 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8880 * @param addr 8881 * @param pin_data 8882 * @param pin_len 8883 * @return 0 if ok 8884 */ 8885 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8886 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8887 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8888 hci_stack->gap_pairing_pin_len = pin_len; 8889 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8890 } 8891 8892 /** 8893 * @brief Legacy Pairing Pin Code Response 8894 * @param addr 8895 * @param pin 8896 * @return 0 if ok 8897 */ 8898 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8899 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8900 } 8901 8902 /** 8903 * @brief Abort Legacy Pairing 8904 * @param addr 8905 * @param pin 8906 * @return 0 if ok 8907 */ 8908 int gap_pin_code_negative(bd_addr_t addr){ 8909 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8910 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8911 } 8912 8913 /** 8914 * @brief SSP Passkey Response 8915 * @param addr 8916 * @param passkey 8917 * @return 0 if ok 8918 */ 8919 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8920 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8921 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8922 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8923 } 8924 8925 /** 8926 * @brief Abort SSP Passkey Entry/Pairing 8927 * @param addr 8928 * @param pin 8929 * @return 0 if ok 8930 */ 8931 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8932 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8933 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8934 } 8935 8936 /** 8937 * @brief Accept SSP Numeric Comparison 8938 * @param addr 8939 * @param passkey 8940 * @return 0 if ok 8941 */ 8942 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8943 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8944 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8945 } 8946 8947 /** 8948 * @brief Abort SSP Numeric Comparison/Pairing 8949 * @param addr 8950 * @param pin 8951 * @return 0 if ok 8952 */ 8953 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8954 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8955 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8956 } 8957 8958 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8959 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8960 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8961 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8962 connectionSetAuthenticationFlags(conn, flag); 8963 hci_run(); 8964 return ERROR_CODE_SUCCESS; 8965 } 8966 #endif 8967 8968 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8969 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8970 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8971 } 8972 8973 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8974 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8975 } 8976 #endif 8977 8978 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8979 /** 8980 * @brief Report Remote OOB Data 8981 * @param bd_addr 8982 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8983 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8984 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8985 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8986 */ 8987 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){ 8988 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8989 if (connection == NULL) { 8990 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8991 } 8992 connection->classic_oob_c_192 = c_192; 8993 connection->classic_oob_r_192 = r_192; 8994 8995 // ignore P-256 if not supported by us 8996 if (hci_stack->secure_connections_active){ 8997 connection->classic_oob_c_256 = c_256; 8998 connection->classic_oob_r_256 = r_256; 8999 } 9000 9001 return ERROR_CODE_SUCCESS; 9002 } 9003 /** 9004 * @brief Generate new OOB data 9005 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9006 */ 9007 void gap_ssp_generate_oob_data(void){ 9008 hci_stack->classic_read_local_oob_data = true; 9009 hci_run(); 9010 } 9011 9012 #endif 9013 9014 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9015 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9016 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9017 if (connection == NULL) { 9018 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9019 } 9020 9021 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9022 connection->link_key_type = type; 9023 9024 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9025 } 9026 9027 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9028 /** 9029 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9030 * @param inquiry_mode see bluetooth_defines.h 9031 */ 9032 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9033 hci_stack->inquiry_mode = inquiry_mode; 9034 } 9035 9036 /** 9037 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9038 */ 9039 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9040 hci_stack->sco_voice_setting = voice_setting; 9041 } 9042 9043 /** 9044 * @brief Get SCO Voice Setting 9045 * @return current voice setting 9046 */ 9047 uint16_t hci_get_sco_voice_setting(void){ 9048 return hci_stack->sco_voice_setting; 9049 } 9050 9051 static int hci_have_usb_transport(void){ 9052 if (!hci_stack->hci_transport) return 0; 9053 const char * transport_name = hci_stack->hci_transport->name; 9054 if (!transport_name) return 0; 9055 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9056 } 9057 9058 /** @brief Get SCO packet length for current SCO Voice setting 9059 * @note Using SCO packets of the exact length is required for USB transfer 9060 * @return Length of SCO packets in bytes (not audio frames) 9061 */ 9062 uint16_t hci_get_sco_packet_length(void){ 9063 uint16_t sco_packet_length = 0; 9064 9065 #ifdef ENABLE_SCO_OVER_HCI 9066 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9067 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9068 9069 if (hci_have_usb_transport()){ 9070 // see Core Spec for H2 USB Transfer. 9071 // 3 byte SCO header + 24 bytes per connection 9072 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 9073 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 9074 } else { 9075 // 3 byte SCO header + SCO packet size over the air (60 bytes) 9076 sco_packet_length = 3 + 60 * multiplier; 9077 // assert that it still fits inside an SCO buffer 9078 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9079 sco_packet_length = 3 + 60; 9080 } 9081 } 9082 #endif 9083 9084 #ifdef HAVE_SCO_TRANSPORT 9085 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9086 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9087 sco_packet_length = 3 + 60 * multiplier; 9088 #endif 9089 return sco_packet_length; 9090 } 9091 9092 /** 9093 * @brief Sets the master/slave policy 9094 * @param policy (0: attempt to become master, 1: let connecting device decide) 9095 */ 9096 void hci_set_master_slave_policy(uint8_t policy){ 9097 hci_stack->master_slave_policy = policy; 9098 } 9099 9100 #endif 9101 9102 HCI_STATE hci_get_state(void){ 9103 return hci_stack->state; 9104 } 9105 9106 #ifdef ENABLE_CLASSIC 9107 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9108 hci_stack->gap_classic_accept_callback = accept_callback; 9109 } 9110 #endif 9111 9112 /** 9113 * @brief Set callback for Bluetooth Hardware Error 9114 */ 9115 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9116 hci_stack->hardware_error_callback = fn; 9117 } 9118 9119 void hci_disconnect_all(void){ 9120 btstack_linked_list_iterator_t it; 9121 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9122 while (btstack_linked_list_iterator_has_next(&it)){ 9123 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9124 if (con->state == SENT_DISCONNECT) continue; 9125 con->state = SEND_DISCONNECT; 9126 } 9127 hci_run(); 9128 } 9129 9130 uint16_t hci_get_manufacturer(void){ 9131 return hci_stack->manufacturer; 9132 } 9133 9134 #ifdef ENABLE_BLE 9135 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9136 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9137 if (!hci_con) return NULL; 9138 return &hci_con->sm_connection; 9139 } 9140 9141 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9142 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9143 #endif 9144 9145 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9146 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9147 if (hci_connection == NULL) return 0; 9148 if (hci_is_le_connection(hci_connection)){ 9149 #ifdef ENABLE_BLE 9150 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9151 if (sm_conn->sm_connection_encrypted) { 9152 return sm_conn->sm_actual_encryption_key_size; 9153 } 9154 #endif 9155 } else { 9156 #ifdef ENABLE_CLASSIC 9157 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9158 return hci_connection->encryption_key_size; 9159 } 9160 #endif 9161 } 9162 return 0; 9163 } 9164 9165 bool gap_authenticated(hci_con_handle_t con_handle){ 9166 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9167 if (hci_connection == NULL) return false; 9168 9169 switch (hci_connection->address_type){ 9170 #ifdef ENABLE_BLE 9171 case BD_ADDR_TYPE_LE_PUBLIC: 9172 case BD_ADDR_TYPE_LE_RANDOM: 9173 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9174 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9175 #endif 9176 #ifdef ENABLE_CLASSIC 9177 case BD_ADDR_TYPE_SCO: 9178 case BD_ADDR_TYPE_ACL: 9179 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9180 #endif 9181 default: 9182 return false; 9183 } 9184 } 9185 9186 bool gap_secure_connection(hci_con_handle_t con_handle){ 9187 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9188 if (hci_connection == NULL) return 0; 9189 9190 switch (hci_connection->address_type){ 9191 #ifdef ENABLE_BLE 9192 case BD_ADDR_TYPE_LE_PUBLIC: 9193 case BD_ADDR_TYPE_LE_RANDOM: 9194 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9195 return hci_connection->sm_connection.sm_connection_sc != 0; 9196 #endif 9197 #ifdef ENABLE_CLASSIC 9198 case BD_ADDR_TYPE_SCO: 9199 case BD_ADDR_TYPE_ACL: 9200 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9201 #endif 9202 default: 9203 return false; 9204 } 9205 } 9206 9207 bool gap_bonded(hci_con_handle_t con_handle){ 9208 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9209 if (hci_connection == NULL) return 0; 9210 9211 #ifdef ENABLE_CLASSIC 9212 link_key_t link_key; 9213 link_key_type_t link_key_type; 9214 #endif 9215 switch (hci_connection->address_type){ 9216 #ifdef ENABLE_BLE 9217 case BD_ADDR_TYPE_LE_PUBLIC: 9218 case BD_ADDR_TYPE_LE_RANDOM: 9219 return hci_connection->sm_connection.sm_le_db_index >= 0; 9220 #endif 9221 #ifdef ENABLE_CLASSIC 9222 case BD_ADDR_TYPE_SCO: 9223 case BD_ADDR_TYPE_ACL: 9224 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9225 #endif 9226 default: 9227 return false; 9228 } 9229 } 9230 9231 #ifdef ENABLE_BLE 9232 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9233 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9234 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9235 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9236 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9237 return sm_conn->sm_connection_authorization_state; 9238 } 9239 #endif 9240 9241 #ifdef ENABLE_CLASSIC 9242 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){ 9243 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9244 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9245 conn->sniff_min_interval = sniff_min_interval; 9246 conn->sniff_max_interval = sniff_max_interval; 9247 conn->sniff_attempt = sniff_attempt; 9248 conn->sniff_timeout = sniff_timeout; 9249 hci_run(); 9250 return 0; 9251 } 9252 9253 /** 9254 * @brief Exit Sniff mode 9255 * @param con_handle 9256 @ @return 0 if ok 9257 */ 9258 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9259 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9260 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9261 conn->sniff_min_interval = 0xffff; 9262 hci_run(); 9263 return 0; 9264 } 9265 9266 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){ 9267 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9268 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9269 conn->sniff_subrating_max_latency = max_latency; 9270 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9271 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9272 hci_run(); 9273 return ERROR_CODE_SUCCESS; 9274 } 9275 9276 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){ 9277 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9278 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9279 conn->qos_service_type = service_type; 9280 conn->qos_token_rate = token_rate; 9281 conn->qos_peak_bandwidth = peak_bandwidth; 9282 conn->qos_latency = latency; 9283 conn->qos_delay_variation = delay_variation; 9284 hci_run(); 9285 return ERROR_CODE_SUCCESS; 9286 } 9287 9288 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9289 hci_stack->new_page_scan_interval = page_scan_interval; 9290 hci_stack->new_page_scan_window = page_scan_window; 9291 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9292 hci_run(); 9293 } 9294 9295 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9296 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9297 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9298 hci_run(); 9299 } 9300 9301 void gap_set_page_timeout(uint16_t page_timeout){ 9302 hci_stack->page_timeout = page_timeout; 9303 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9304 hci_run(); 9305 } 9306 9307 #endif 9308 9309 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9310 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9311 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9312 if (le_device_db_index >= le_device_db_max_count()) return; 9313 uint8_t offset = le_device_db_index >> 3; 9314 uint8_t mask = 1 << (le_device_db_index & 7); 9315 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9316 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9317 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9318 // note: go back to remove entries, otherwise, a remove + add will skip the add 9319 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9320 } 9321 } 9322 9323 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9324 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9325 if (le_device_db_index >= le_device_db_max_count()) return; 9326 uint8_t offset = le_device_db_index >> 3; 9327 uint8_t mask = 1 << (le_device_db_index & 7); 9328 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9329 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9330 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9331 } 9332 } 9333 9334 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9335 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9336 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9337 } 9338 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9339 // restart le resolving list update 9340 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9341 } 9342 return ERROR_CODE_SUCCESS; 9343 } 9344 9345 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9346 hci_stack->le_privacy_mode = privacy_mode; 9347 } 9348 #endif 9349 9350 #ifdef ENABLE_BLE 9351 #ifdef ENABLE_LE_CENTRAL 9352 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9353 9354 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9355 // check if already in list 9356 btstack_linked_list_iterator_t it; 9357 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9358 while (btstack_linked_list_iterator_has_next(&it)) { 9359 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9360 if (entry->sid != advertising_sid) { 9361 continue; 9362 } 9363 if (entry->address_type != address_type) { 9364 continue; 9365 } 9366 if (memcmp(entry->address, address, 6) != 0) { 9367 continue; 9368 } 9369 // disallow if already scheduled to add 9370 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9371 return ERROR_CODE_COMMAND_DISALLOWED; 9372 } 9373 // still on controller, but scheduled to remove -> re-add 9374 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9375 return ERROR_CODE_SUCCESS; 9376 } 9377 // alloc and add to list 9378 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9379 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9380 entry->sid = advertising_sid; 9381 entry->address_type = address_type; 9382 (void)memcpy(entry->address, address, 6); 9383 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9384 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9385 return ERROR_CODE_SUCCESS; 9386 } 9387 9388 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9389 btstack_linked_list_iterator_t it; 9390 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9391 while (btstack_linked_list_iterator_has_next(&it)){ 9392 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9393 if (entry->sid != advertising_sid) { 9394 continue; 9395 } 9396 if (entry->address_type != address_type) { 9397 continue; 9398 } 9399 if (memcmp(entry->address, address, 6) != 0) { 9400 continue; 9401 } 9402 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9403 // remove from controller if already present 9404 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9405 } else { 9406 // directly remove entry from whitelist 9407 btstack_linked_list_iterator_remove(&it); 9408 btstack_memory_periodic_advertiser_list_entry_free(entry); 9409 } 9410 return ERROR_CODE_SUCCESS; 9411 } 9412 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9413 } 9414 9415 static void hci_periodic_advertiser_list_clear(void){ 9416 btstack_linked_list_iterator_t it; 9417 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9418 while (btstack_linked_list_iterator_has_next(&it)){ 9419 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9420 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9421 // remove from controller if already present 9422 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9423 continue; 9424 } 9425 // directly remove entry from whitelist 9426 btstack_linked_list_iterator_remove(&it); 9427 btstack_memory_periodic_advertiser_list_entry_free(entry); 9428 } 9429 } 9430 9431 uint8_t gap_periodic_advertiser_list_clear(void){ 9432 hci_periodic_advertiser_list_clear(); 9433 hci_run(); 9434 return ERROR_CODE_SUCCESS; 9435 } 9436 9437 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9438 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9439 if (status){ 9440 return status; 9441 } 9442 hci_run(); 9443 return ERROR_CODE_SUCCESS; 9444 } 9445 9446 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9447 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9448 if (status){ 9449 return status; 9450 } 9451 hci_run(); 9452 return ERROR_CODE_SUCCESS; 9453 } 9454 9455 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9456 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9457 // abort if already active 9458 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9459 return ERROR_CODE_COMMAND_DISALLOWED; 9460 } 9461 // store request 9462 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9463 hci_stack->le_periodic_sync_options = options; 9464 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9465 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9466 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9467 hci_stack->le_periodic_sync_skip = skip; 9468 hci_stack->le_periodic_sync_timeout = sync_timeout; 9469 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9470 9471 hci_run(); 9472 return ERROR_CODE_SUCCESS; 9473 } 9474 9475 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9476 // abort if not requested 9477 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9478 return ERROR_CODE_COMMAND_DISALLOWED; 9479 } 9480 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9481 hci_run(); 9482 return ERROR_CODE_SUCCESS; 9483 } 9484 9485 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9486 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9487 return ERROR_CODE_COMMAND_DISALLOWED; 9488 } 9489 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9490 hci_run(); 9491 return ERROR_CODE_SUCCESS; 9492 } 9493 9494 #endif 9495 #endif 9496 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9497 static hci_iso_stream_t * 9498 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9499 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9500 if (iso_stream != NULL){ 9501 iso_stream->iso_type = iso_type; 9502 iso_stream->state = state; 9503 iso_stream->group_id = group_id; 9504 iso_stream->stream_id = stream_id; 9505 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9506 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9507 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9508 } 9509 return iso_stream; 9510 } 9511 9512 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9513 btstack_linked_list_iterator_t it; 9514 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9515 while (btstack_linked_list_iterator_has_next(&it)){ 9516 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9517 if (iso_stream->cis_handle == con_handle ) { 9518 return iso_stream; 9519 } 9520 } 9521 return NULL; 9522 } 9523 9524 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9525 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9526 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9527 btstack_memory_hci_iso_stream_free(iso_stream); 9528 } 9529 9530 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9531 btstack_linked_list_iterator_t it; 9532 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9533 while (btstack_linked_list_iterator_has_next(&it)){ 9534 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9535 if ((iso_stream->group_id == group_id) && 9536 (iso_stream->iso_type == iso_type)){ 9537 btstack_linked_list_iterator_remove(&it); 9538 btstack_memory_hci_iso_stream_free(iso_stream); 9539 } 9540 } 9541 } 9542 9543 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9544 btstack_linked_list_iterator_t it; 9545 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9546 while (btstack_linked_list_iterator_has_next(&it)){ 9547 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9548 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9549 (iso_stream->group_id == group_id)){ 9550 btstack_linked_list_iterator_remove(&it); 9551 btstack_memory_hci_iso_stream_free(iso_stream); 9552 } 9553 } 9554 } 9555 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9556 btstack_linked_list_iterator_t it; 9557 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9558 while (btstack_linked_list_iterator_has_next(&it)){ 9559 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9560 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9561 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9562 } 9563 } 9564 } 9565 9566 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9567 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9568 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9569 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9570 return (sdu_len_offset + 2 + sdu_len) == size; 9571 } 9572 9573 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9574 if (hci_stack->iso_packet_handler == NULL) { 9575 return; 9576 } 9577 if (size < 4) { 9578 return; 9579 } 9580 9581 // parse header 9582 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9583 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9584 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9585 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9586 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9587 9588 // assert packet is complete 9589 if ((iso_data_len + 4u) != size){ 9590 return; 9591 } 9592 9593 if ((pb_flag & 0x01) == 0){ 9594 if (pb_flag == 0x02){ 9595 // The ISO_Data_Load field contains a header and a complete SDU. 9596 if (hci_iso_sdu_complete(packet, size)) { 9597 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9598 } 9599 } else { 9600 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9601 if (iso_stream == NULL){ 9602 return; 9603 } 9604 if (size > HCI_ISO_PAYLOAD_SIZE){ 9605 return; 9606 } 9607 memcpy(iso_stream->reassembly_buffer, packet, size); 9608 // fix pb_flag 9609 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9610 iso_stream->reassembly_pos = size; 9611 } 9612 } else { 9613 // iso_data_load contains continuation or last fragment of an SDU 9614 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9615 if (ts_flag != 0){ 9616 return; 9617 } 9618 // append fragment 9619 if (iso_stream == NULL){ 9620 return; 9621 } 9622 if (iso_stream->reassembly_pos == 0){ 9623 return; 9624 } 9625 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9626 // reset reassembly buffer 9627 iso_stream->reassembly_pos = 0; 9628 return; 9629 } 9630 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9631 iso_stream->reassembly_pos += iso_data_len; 9632 9633 // deliver if last fragment and SDU complete 9634 if (pb_flag == 0x03){ 9635 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9636 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9637 } 9638 iso_stream->reassembly_pos = 0; 9639 } 9640 } 9641 } 9642 9643 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9644 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9645 uint16_t pos = 0; 9646 event[pos++] = HCI_EVENT_META_GAP; 9647 event[pos++] = 4 + (2 * big->num_bis); 9648 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9649 event[pos++] = status; 9650 event[pos++] = big->big_handle; 9651 event[pos++] = big->num_bis; 9652 uint8_t i; 9653 for (i=0;i<big->num_bis;i++){ 9654 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9655 pos += 2; 9656 } 9657 hci_emit_event(event, pos, 0); 9658 } 9659 9660 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9661 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9662 uint16_t pos = 0; 9663 event[pos++] = HCI_EVENT_META_GAP; 9664 event[pos++] = 4 + (2 * cig->num_cis); 9665 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9666 event[pos++] = status; 9667 event[pos++] = cig->cig_id; 9668 event[pos++] = cig->num_cis; 9669 uint8_t i; 9670 for (i=0;i<cig->num_cis;i++){ 9671 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9672 pos += 2; 9673 } 9674 hci_emit_event(event, pos, 0); 9675 } 9676 9677 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9678 hci_con_handle_t acl_con_handle) { 9679 uint8_t event [10]; 9680 uint16_t pos = 0; 9681 event[pos++] = HCI_EVENT_META_GAP; 9682 event[pos++] = 8; 9683 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9684 event[pos++] = status; 9685 event[pos++] = cig_id; 9686 event[pos++] = cis_id; 9687 little_endian_store_16(event, pos, cis_con_handle); 9688 pos += 2; 9689 little_endian_store_16(event, pos, acl_con_handle); 9690 pos += 2; 9691 hci_emit_event(event, pos, 0); 9692 } 9693 9694 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9695 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9696 // cache data before finalizing struct 9697 uint8_t cig_id = iso_stream->group_id; 9698 uint8_t cis_id = iso_stream->stream_id; 9699 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9700 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9701 if (status != ERROR_CODE_SUCCESS){ 9702 hci_iso_stream_finalize(iso_stream); 9703 } 9704 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9705 } 9706 9707 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9708 uint8_t event [4]; 9709 uint16_t pos = 0; 9710 event[pos++] = HCI_EVENT_META_GAP; 9711 event[pos++] = 2; 9712 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9713 event[pos++] = big->big_handle; 9714 hci_emit_event(event, pos, 0); 9715 } 9716 9717 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9718 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9719 uint16_t pos = 0; 9720 event[pos++] = HCI_EVENT_META_GAP; 9721 event[pos++] = 4; 9722 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9723 event[pos++] = status; 9724 event[pos++] = big_sync->big_handle; 9725 event[pos++] = big_sync->num_bis; 9726 uint8_t i; 9727 for (i=0;i<big_sync->num_bis;i++){ 9728 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9729 pos += 2; 9730 } 9731 hci_emit_event(event, pos, 0); 9732 } 9733 9734 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9735 uint8_t event [4]; 9736 uint16_t pos = 0; 9737 event[pos++] = HCI_EVENT_META_GAP; 9738 event[pos++] = 2; 9739 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9740 event[pos++] = big_handle; 9741 hci_emit_event(event, pos, 0); 9742 } 9743 9744 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9745 uint8_t event[6]; 9746 uint16_t pos = 0; 9747 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9748 event[pos++] = sizeof(event) - 2; 9749 event[pos++] = big->big_handle; 9750 event[pos++] = bis_index; 9751 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9752 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9753 } 9754 9755 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9756 uint8_t event[4]; 9757 uint16_t pos = 0; 9758 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9759 event[pos++] = sizeof(event) - 2; 9760 little_endian_store_16(event, pos, cis_con_handle); 9761 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9762 } 9763 9764 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9765 btstack_linked_list_iterator_t it; 9766 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9767 while (btstack_linked_list_iterator_has_next(&it)){ 9768 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9769 if ( big->big_handle == big_handle ) { 9770 return big; 9771 } 9772 } 9773 return NULL; 9774 } 9775 9776 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9777 btstack_linked_list_iterator_t it; 9778 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9779 while (btstack_linked_list_iterator_has_next(&it)){ 9780 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9781 if ( big_sync->big_handle == big_handle ) { 9782 return big_sync; 9783 } 9784 } 9785 return NULL; 9786 } 9787 9788 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9789 hci_stack->iso_packets_to_queue = num_packets; 9790 } 9791 9792 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9793 btstack_linked_list_iterator_t it; 9794 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9795 while (btstack_linked_list_iterator_has_next(&it)){ 9796 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9797 if ( cig->cig_id == cig_id ) { 9798 return cig; 9799 } 9800 } 9801 return NULL; 9802 } 9803 9804 static void hci_iso_notify_can_send_now(void){ 9805 9806 // BIG 9807 9808 btstack_linked_list_iterator_t it; 9809 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9810 while (btstack_linked_list_iterator_has_next(&it)){ 9811 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9812 // track number completed packet timestamps 9813 if (big->num_completed_timestamp_current_valid){ 9814 big->num_completed_timestamp_current_valid = false; 9815 if (big->num_completed_timestamp_previous_valid){ 9816 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9817 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9818 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9819 big->num_completed_timestamp_previous_ms); 9820 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9821 // to catch up, skip packet on all BIS 9822 uint8_t i; 9823 for (i=0;i<big->num_bis;i++){ 9824 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9825 if (iso_stream){ 9826 iso_stream->num_packets_to_skip++; 9827 } 9828 } 9829 } 9830 } 9831 big->num_completed_timestamp_previous_valid = true; 9832 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9833 } 9834 9835 if (big->can_send_now_requested){ 9836 // check if no outgoing iso packets pending and no can send now have to be emitted 9837 uint8_t i; 9838 bool can_send = true; 9839 uint8_t num_iso_queued_minimum = 0; 9840 for (i=0;i<big->num_bis;i++){ 9841 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9842 if (iso_stream == NULL) continue; 9843 // handle case where individual ISO packet was sent too late: 9844 // for each additionally queued packet, a new one needs to get skipped 9845 if (i==0){ 9846 num_iso_queued_minimum = iso_stream->num_packets_sent; 9847 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9848 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9849 iso_stream->num_packets_to_skip += num_packets_to_skip; 9850 iso_stream->num_packets_sent -= num_packets_to_skip; 9851 } 9852 // check if we can send now 9853 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9854 can_send = false; 9855 break; 9856 } 9857 } 9858 if (can_send){ 9859 // propagate can send now to individual streams 9860 big->can_send_now_requested = false; 9861 for (i=0;i<big->num_bis;i++){ 9862 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9863 iso_stream->emit_ready_to_send = true; 9864 } 9865 } 9866 } 9867 } 9868 9869 if (hci_stack->hci_packet_buffer_reserved) return; 9870 9871 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9872 while (btstack_linked_list_iterator_has_next(&it)){ 9873 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9874 // report bis ready 9875 uint8_t i; 9876 for (i=0;i<big->num_bis;i++){ 9877 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9878 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9879 iso_stream->emit_ready_to_send = false; 9880 hci_emit_bis_can_send_now(big, i); 9881 break; 9882 } 9883 } 9884 } 9885 9886 // CIS 9887 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9888 while (btstack_linked_list_iterator_has_next(&it)) { 9889 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9890 if ((iso_stream->can_send_now_requested) && 9891 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9892 iso_stream->can_send_now_requested = false; 9893 hci_emit_cis_can_send_now(iso_stream->cis_handle); 9894 } 9895 } 9896 } 9897 9898 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9899 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9900 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9901 } 9902 if (big_params->num_bis == 0){ 9903 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9904 } 9905 if (big_params->num_bis > MAX_NR_BIS){ 9906 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9907 } 9908 9909 // reserve ISO Streams 9910 uint8_t i; 9911 uint8_t status = ERROR_CODE_SUCCESS; 9912 for (i=0;i<big_params->num_bis;i++){ 9913 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 9914 if (iso_stream == NULL) { 9915 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9916 break; 9917 } 9918 } 9919 9920 // free structs on error 9921 if (status != ERROR_CODE_SUCCESS){ 9922 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9923 return status; 9924 } 9925 9926 le_audio_big_t * big = storage; 9927 big->big_handle = big_params->big_handle; 9928 big->params = big_params; 9929 big->state = LE_AUDIO_BIG_STATE_CREATE; 9930 big->num_bis = big_params->num_bis; 9931 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9932 9933 hci_run(); 9934 9935 return ERROR_CODE_SUCCESS; 9936 } 9937 9938 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9939 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9940 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9941 } 9942 if (big_sync_params->num_bis == 0){ 9943 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9944 } 9945 if (big_sync_params->num_bis > MAX_NR_BIS){ 9946 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9947 } 9948 9949 le_audio_big_sync_t * big_sync = storage; 9950 big_sync->big_handle = big_sync_params->big_handle; 9951 big_sync->params = big_sync_params; 9952 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9953 big_sync->num_bis = big_sync_params->num_bis; 9954 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9955 9956 hci_run(); 9957 9958 return ERROR_CODE_SUCCESS; 9959 } 9960 9961 uint8_t gap_big_terminate(uint8_t big_handle){ 9962 le_audio_big_t * big = hci_big_for_handle(big_handle); 9963 if (big == NULL){ 9964 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9965 } 9966 switch (big->state){ 9967 case LE_AUDIO_BIG_STATE_CREATE: 9968 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9969 hci_emit_big_terminated(big); 9970 break; 9971 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9972 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9973 break; 9974 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9975 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9976 case LE_AUDIO_BIG_STATE_ACTIVE: 9977 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9978 hci_run(); 9979 break; 9980 default: 9981 return ERROR_CODE_COMMAND_DISALLOWED; 9982 } 9983 return ERROR_CODE_SUCCESS; 9984 } 9985 9986 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9987 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9988 if (big_sync == NULL){ 9989 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9990 } 9991 switch (big_sync->state){ 9992 case LE_AUDIO_BIG_STATE_CREATE: 9993 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9994 hci_emit_big_sync_stopped(big_handle); 9995 break; 9996 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9997 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9998 break; 9999 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10000 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10001 case LE_AUDIO_BIG_STATE_ACTIVE: 10002 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10003 hci_run(); 10004 break; 10005 default: 10006 return ERROR_CODE_COMMAND_DISALLOWED; 10007 } 10008 return ERROR_CODE_SUCCESS; 10009 } 10010 10011 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10012 le_audio_big_t * big = hci_big_for_handle(big_handle); 10013 if (big == NULL){ 10014 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10015 } 10016 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10017 return ERROR_CODE_COMMAND_DISALLOWED; 10018 } 10019 big->can_send_now_requested = true; 10020 hci_iso_notify_can_send_now(); 10021 return ERROR_CODE_SUCCESS; 10022 } 10023 10024 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10025 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10026 if (iso_stream == NULL){ 10027 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10028 } 10029 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10030 return ERROR_CODE_COMMAND_DISALLOWED; 10031 } 10032 iso_stream->can_send_now_requested = true; 10033 hci_iso_notify_can_send_now(); 10034 return ERROR_CODE_SUCCESS; 10035 } 10036 10037 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10038 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10039 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10040 } 10041 if (cig_params->num_cis == 0){ 10042 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10043 } 10044 if (cig_params->num_cis > MAX_NR_BIS){ 10045 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10046 } 10047 10048 // reserve ISO Streams 10049 uint8_t i; 10050 uint8_t status = ERROR_CODE_SUCCESS; 10051 for (i=0;i<cig_params->num_cis;i++){ 10052 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10053 if (iso_stream == NULL) { 10054 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10055 break; 10056 } 10057 } 10058 10059 // free structs on error 10060 if (status != ERROR_CODE_SUCCESS){ 10061 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10062 return status; 10063 } 10064 10065 le_audio_cig_t * cig = storage; 10066 cig->cig_id = cig_params->cig_id; 10067 cig->num_cis = cig_params->num_cis; 10068 cig->params = cig_params; 10069 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10070 for (i=0;i<cig->num_cis;i++){ 10071 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10072 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10073 cig->cis_setup_active[i] = false; 10074 cig->cis_established[i] = false; 10075 } 10076 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10077 10078 hci_run(); 10079 10080 return ERROR_CODE_SUCCESS; 10081 } 10082 10083 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10084 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10085 if (cig == NULL){ 10086 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10087 } 10088 10089 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10090 return ERROR_CODE_COMMAND_DISALLOWED; 10091 } 10092 10093 // store ACL Connection Handles 10094 uint8_t i; 10095 for (i=0;i<cig->num_cis;i++){ 10096 // check that all con handles exist and store 10097 hci_con_handle_t cis_handle = cis_con_handles[i]; 10098 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10099 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10100 } 10101 uint8_t j; 10102 bool found = false; 10103 for (j=0;j<cig->num_cis;j++){ 10104 if (cig->cis_con_handles[j] == cis_handle){ 10105 cig->acl_con_handles[j] = acl_con_handles[j]; 10106 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10107 btstack_assert(iso_stream != NULL); 10108 iso_stream->acl_handle = acl_con_handles[j]; 10109 found = true; 10110 break; 10111 } 10112 } 10113 if (!found){ 10114 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10115 } 10116 } 10117 10118 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10119 hci_run(); 10120 10121 return ERROR_CODE_SUCCESS; 10122 } 10123 10124 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10125 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10126 if (iso_stream == NULL){ 10127 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10128 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10129 } 10130 10131 // set next state and continue 10132 iso_stream->state = state; 10133 hci_run(); 10134 return ERROR_CODE_SUCCESS; 10135 } 10136 10137 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10138 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10139 } 10140 10141 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10142 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10143 } 10144 10145 10146 #endif 10147 #endif /* ENABLE_BLE */ 10148 10149 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10150 void hci_setup_test_connections_fuzz(void){ 10151 hci_connection_t * conn; 10152 10153 // default address: 66:55:44:33:00:01 10154 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10155 10156 // setup Controller info 10157 hci_stack->num_cmd_packets = 255; 10158 hci_stack->acl_packets_total_num = 255; 10159 10160 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10161 addr[5] = 0x01; 10162 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10163 conn->con_handle = addr[5]; 10164 conn->role = HCI_ROLE_SLAVE; 10165 conn->state = RECEIVED_CONNECTION_REQUEST; 10166 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10167 10168 // setup incoming Classic SCO connection with con handle 0x0002 10169 addr[5] = 0x02; 10170 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10171 conn->con_handle = addr[5]; 10172 conn->role = HCI_ROLE_SLAVE; 10173 conn->state = RECEIVED_CONNECTION_REQUEST; 10174 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10175 10176 // setup ready Classic ACL connection with con handle 0x0003 10177 addr[5] = 0x03; 10178 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10179 conn->con_handle = addr[5]; 10180 conn->role = HCI_ROLE_SLAVE; 10181 conn->state = OPEN; 10182 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10183 10184 // setup ready Classic SCO connection with con handle 0x0004 10185 addr[5] = 0x04; 10186 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10187 conn->con_handle = addr[5]; 10188 conn->role = HCI_ROLE_SLAVE; 10189 conn->state = OPEN; 10190 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10191 10192 // setup ready LE ACL connection with con handle 0x005 and public address 10193 addr[5] = 0x05; 10194 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 10195 conn->con_handle = addr[5]; 10196 conn->role = HCI_ROLE_SLAVE; 10197 conn->state = OPEN; 10198 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10199 conn->sm_connection.sm_connection_encrypted = 1; 10200 } 10201 10202 void hci_free_connections_fuzz(void){ 10203 btstack_linked_list_iterator_t it; 10204 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10205 while (btstack_linked_list_iterator_has_next(&it)){ 10206 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10207 btstack_linked_list_iterator_remove(&it); 10208 btstack_memory_hci_connection_free(con); 10209 } 10210 } 10211 void hci_simulate_working_fuzz(void){ 10212 hci_stack->le_scanning_param_update = false; 10213 hci_init_done(); 10214 hci_stack->num_cmd_packets = 255; 10215 } 10216 #endif 10217