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 * 315 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 316 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 317 318 hci_connection_t * conn = btstack_memory_hci_connection_get(); 319 if (!conn) return NULL; 320 hci_connection_init(conn); 321 322 bd_addr_copy(conn->address, addr); 323 conn->address_type = addr_type; 324 conn->con_handle = HCI_CON_HANDLE_INVALID; 325 conn->role = role; 326 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 327 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 328 #endif 329 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 330 331 return conn; 332 } 333 334 335 /** 336 * get le connection parameter range 337 * 338 * @return le connection parameter range struct 339 */ 340 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 341 *range = hci_stack->le_connection_parameter_range; 342 } 343 344 /** 345 * set le connection parameter range 346 * 347 */ 348 349 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 350 hci_stack->le_connection_parameter_range = *range; 351 } 352 353 /** 354 * @brief Test if connection parameters are inside in existing rage 355 * @param conn_interval_min (unit: 1.25ms) 356 * @param conn_interval_max (unit: 1.25ms) 357 * @param conn_latency 358 * @param supervision_timeout (unit: 10ms) 359 * @return 1 if included 360 */ 361 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){ 362 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 363 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 364 365 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 366 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 367 368 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 369 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 370 371 return 1; 372 } 373 374 /** 375 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 376 * @note: default: 1 377 * @param max_peripheral_connections 378 */ 379 #ifdef ENABLE_LE_PERIPHERAL 380 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 381 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 382 } 383 #endif 384 385 /** 386 * get hci connections iterator 387 * 388 * @return hci connections iterator 389 */ 390 391 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 392 btstack_linked_list_iterator_init(it, &hci_stack->connections); 393 } 394 395 /** 396 * get connection for a given handle 397 * 398 * @return connection OR NULL, if not found 399 */ 400 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 401 btstack_linked_list_iterator_t it; 402 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 403 while (btstack_linked_list_iterator_has_next(&it)){ 404 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 405 if ( item->con_handle == con_handle ) { 406 return item; 407 } 408 } 409 return NULL; 410 } 411 412 /** 413 * get connection for given address 414 * 415 * @return connection OR NULL, if not found 416 */ 417 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 418 btstack_linked_list_iterator_t it; 419 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 420 while (btstack_linked_list_iterator_has_next(&it)){ 421 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 422 if (connection->address_type != addr_type) continue; 423 if (memcmp(addr, connection->address, 6) != 0) continue; 424 return connection; 425 } 426 return NULL; 427 } 428 429 #ifdef ENABLE_CLASSIC 430 431 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 432 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 433 } 434 435 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 436 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 437 } 438 439 #ifdef ENABLE_SCO_OVER_HCI 440 static int hci_number_sco_connections(void){ 441 int connections = 0; 442 btstack_linked_list_iterator_t it; 443 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 444 while (btstack_linked_list_iterator_has_next(&it)){ 445 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 446 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 447 connections++; 448 } 449 return connections; 450 } 451 #endif 452 453 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 454 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 455 #ifdef HAVE_EMBEDDED_TICK 456 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 457 // connections might be timed out 458 hci_emit_l2cap_check_timeout(connection); 459 } 460 #else 461 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 462 // connections might be timed out 463 hci_emit_l2cap_check_timeout(connection); 464 } 465 #endif 466 } 467 468 static void hci_connection_timestamp(hci_connection_t *connection){ 469 #ifdef HAVE_EMBEDDED_TICK 470 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 471 #else 472 connection->timestamp = btstack_run_loop_get_time_ms(); 473 #endif 474 } 475 476 /** 477 * add authentication flags and reset timer 478 * @note: assumes classic connection 479 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 480 */ 481 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 482 bd_addr_t addr; 483 reverse_bd_addr(bd_addr, addr); 484 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 485 if (conn) { 486 connectionSetAuthenticationFlags(conn, flags); 487 hci_connection_timestamp(conn); 488 } 489 } 490 491 static bool hci_pairing_active(hci_connection_t * hci_connection){ 492 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 493 } 494 495 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 496 if (hci_pairing_active(hci_connection)) return; 497 if (ssp){ 498 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 499 } else { 500 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 501 } 502 // if we are initiator, we have sent an HCI Authenticate Request 503 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 504 505 // if we are responder, use minimal service security level as required level 506 if (!initiator){ 507 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); 508 } 509 510 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 511 512 uint8_t event[12]; 513 event[0] = GAP_EVENT_PAIRING_STARTED; 514 event[1] = 10; 515 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 516 reverse_bd_addr(hci_connection->address, &event[4]); 517 event[10] = (uint8_t) ssp; 518 event[11] = (uint8_t) initiator; 519 hci_emit_event(event, sizeof(event), 1); 520 } 521 522 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 523 hci_connection->requested_security_level = LEVEL_0; 524 if (!hci_pairing_active(hci_connection)) return; 525 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 526 #ifdef ENABLE_CLASSIC_PAIRING_OOB 527 hci_connection->classic_oob_c_192 = NULL; 528 hci_connection->classic_oob_r_192 = NULL; 529 hci_connection->classic_oob_c_256 = NULL; 530 hci_connection->classic_oob_r_256 = NULL; 531 #endif 532 log_info("pairing complete, status %02x", status); 533 534 uint8_t event[11]; 535 event[0] = GAP_EVENT_PAIRING_COMPLETE; 536 event[1] = 9; 537 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 538 reverse_bd_addr(hci_connection->address, &event[4]); 539 event[10] = status; 540 hci_emit_event(event, sizeof(event), 1); 541 542 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 543 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 544 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 545 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 546 hci_connection->bonding_status = status; 547 } 548 } 549 550 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 551 hci_connection_t * conn = hci_connection_for_handle(handle); 552 if (!conn) return false; 553 return hci_pairing_active(conn); 554 } 555 556 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 557 if (!hci_stack->link_key_db) return; 558 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 559 hci_stack->link_key_db->delete_link_key(addr); 560 } 561 562 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 563 if (!hci_stack->link_key_db) return; 564 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 565 hci_stack->link_key_db->put_link_key(addr, link_key, type); 566 } 567 568 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 569 if (!hci_stack->link_key_db) return false; 570 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 571 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 572 return result; 573 } 574 575 void gap_delete_all_link_keys(void){ 576 bd_addr_t addr; 577 link_key_t link_key; 578 link_key_type_t type; 579 btstack_link_key_iterator_t it; 580 int ok = gap_link_key_iterator_init(&it); 581 if (!ok) { 582 log_error("could not initialize iterator"); 583 return; 584 } 585 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 586 gap_drop_link_key_for_bd_addr(addr); 587 } 588 gap_link_key_iterator_done(&it); 589 } 590 591 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 592 if (!hci_stack->link_key_db) return 0; 593 if (!hci_stack->link_key_db->iterator_init) return 0; 594 return hci_stack->link_key_db->iterator_init(it); 595 } 596 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){ 597 if (!hci_stack->link_key_db) return 0; 598 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 599 } 600 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 601 if (!hci_stack->link_key_db) return; 602 hci_stack->link_key_db->iterator_done(it); 603 } 604 #endif 605 606 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 607 switch (address_type){ 608 case BD_ADDR_TYPE_LE_PUBLIC: 609 case BD_ADDR_TYPE_LE_RANDOM: 610 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 611 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 612 return true; 613 default: 614 return false; 615 } 616 } 617 618 static int hci_is_le_connection(hci_connection_t * connection){ 619 return hci_is_le_connection_type(connection->address_type); 620 } 621 622 /** 623 * count connections 624 */ 625 static int nr_hci_connections(void){ 626 int count = 0; 627 btstack_linked_item_t *it; 628 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 629 count++; 630 } 631 return count; 632 } 633 634 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 635 636 unsigned int num_packets_sent_classic = 0; 637 unsigned int num_packets_sent_le = 0; 638 639 btstack_linked_item_t *it; 640 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 641 hci_connection_t * connection = (hci_connection_t *) it; 642 if (hci_is_le_connection(connection)){ 643 num_packets_sent_le += connection->num_packets_sent; 644 } 645 if (connection->address_type == BD_ADDR_TYPE_ACL){ 646 num_packets_sent_classic += connection->num_packets_sent; 647 } 648 } 649 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 650 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 651 int free_slots_le = 0; 652 653 if (free_slots_classic < 0){ 654 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); 655 return 0; 656 } 657 658 if (hci_stack->le_acl_packets_total_num){ 659 // if we have LE slots, they are used 660 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 661 if (free_slots_le < 0){ 662 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); 663 return 0; 664 } 665 } else { 666 // otherwise, classic slots are used for LE, too 667 free_slots_classic -= num_packets_sent_le; 668 if (free_slots_classic < 0){ 669 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); 670 return 0; 671 } 672 } 673 674 switch (address_type){ 675 case BD_ADDR_TYPE_UNKNOWN: 676 log_error("hci_number_free_acl_slots: unknown address type"); 677 return 0; 678 679 case BD_ADDR_TYPE_ACL: 680 return (uint16_t) free_slots_classic; 681 682 default: 683 if (hci_stack->le_acl_packets_total_num > 0){ 684 return (uint16_t) free_slots_le; 685 } 686 return (uint16_t) free_slots_classic; 687 } 688 } 689 690 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 691 // get connection type 692 hci_connection_t * connection = hci_connection_for_handle(con_handle); 693 if (!connection){ 694 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 695 return 0; 696 } 697 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 698 } 699 700 #ifdef ENABLE_CLASSIC 701 static int hci_number_free_sco_slots(void){ 702 unsigned int num_sco_packets_sent = 0; 703 btstack_linked_item_t *it; 704 if (hci_stack->synchronous_flow_control_enabled){ 705 // explicit flow control 706 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 707 hci_connection_t * connection = (hci_connection_t *) it; 708 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 709 num_sco_packets_sent += connection->num_packets_sent; 710 } 711 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 712 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 713 return 0; 714 } 715 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 716 } else { 717 // implicit flow control -- TODO 718 int num_ready = 0; 719 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 720 hci_connection_t * connection = (hci_connection_t *) it; 721 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 722 if (connection->sco_tx_ready == 0) continue; 723 num_ready++; 724 } 725 return num_ready; 726 } 727 } 728 #endif 729 730 // only used to send HCI Host Number Completed Packets 731 static int hci_can_send_comand_packet_transport(void){ 732 if (hci_stack->hci_packet_buffer_reserved) return 0; 733 734 // check for async hci transport implementations 735 if (hci_stack->hci_transport->can_send_packet_now){ 736 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 737 return 0; 738 } 739 } 740 return 1; 741 } 742 743 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 744 bool hci_can_send_command_packet_now(void){ 745 if (hci_can_send_comand_packet_transport() == 0) return false; 746 return hci_stack->num_cmd_packets > 0u; 747 } 748 749 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 750 // check for async hci transport implementations 751 if (!hci_stack->hci_transport->can_send_packet_now) return true; 752 return hci_stack->hci_transport->can_send_packet_now(packet_type); 753 } 754 755 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 756 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 757 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 758 } 759 760 bool hci_can_send_acl_le_packet_now(void){ 761 if (hci_stack->hci_packet_buffer_reserved) return false; 762 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 763 } 764 765 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 766 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 767 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 768 } 769 770 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 771 if (hci_stack->hci_packet_buffer_reserved) return false; 772 return hci_can_send_prepared_acl_packet_now(con_handle); 773 } 774 775 #ifdef ENABLE_CLASSIC 776 bool hci_can_send_acl_classic_packet_now(void){ 777 if (hci_stack->hci_packet_buffer_reserved) return false; 778 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 779 } 780 781 bool hci_can_send_prepared_sco_packet_now(void){ 782 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 783 if (hci_have_usb_transport()){ 784 return hci_stack->sco_can_send_now; 785 } else { 786 return hci_number_free_sco_slots() > 0; 787 } 788 } 789 790 bool hci_can_send_sco_packet_now(void){ 791 if (hci_stack->hci_packet_buffer_reserved) return false; 792 return hci_can_send_prepared_sco_packet_now(); 793 } 794 795 void hci_request_sco_can_send_now_event(void){ 796 hci_stack->sco_waiting_for_can_send_now = 1; 797 hci_notify_if_sco_can_send_now(); 798 } 799 #endif 800 801 // used for internal checks in l2cap.c 802 bool hci_is_packet_buffer_reserved(void){ 803 return hci_stack->hci_packet_buffer_reserved; 804 } 805 806 // reserves outgoing packet buffer. 807 // @return 1 if successful 808 bool hci_reserve_packet_buffer(void){ 809 if (hci_stack->hci_packet_buffer_reserved) { 810 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 811 return false; 812 } 813 hci_stack->hci_packet_buffer_reserved = true; 814 return true; 815 } 816 817 void hci_release_packet_buffer(void){ 818 hci_stack->hci_packet_buffer_reserved = false; 819 } 820 821 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 822 static int hci_transport_synchronous(void){ 823 return hci_stack->hci_transport->can_send_packet_now == NULL; 824 } 825 826 // used for debugging 827 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 828 static void hci_controller_dump_packets(void){ 829 // format: "{handle:04x}:{count:02d} " 830 char summaries[3][7 * 8 + 1]; 831 uint16_t totals[3]; 832 uint8_t index; 833 for (index = 0 ; index < 3 ; index++){ 834 summaries[index][0] = 0; 835 totals[index] = 0; 836 } 837 btstack_linked_item_t *it; 838 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 839 hci_connection_t * connection = (hci_connection_t *) it; 840 switch (connection->address_type){ 841 case BD_ADDR_TYPE_ACL: 842 index = 0; 843 break; 844 case BD_ADDR_TYPE_SCO: 845 index = 2; 846 break; 847 default: 848 index = 1; 849 break; 850 } 851 totals[index] += connection->num_packets_sent; 852 char item_text[10]; 853 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 854 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 855 } 856 for (index = 0 ; index < 3 ; index++){ 857 if (summaries[index][0] == 0){ 858 summaries[index][0] = '-'; 859 summaries[index][1] = 0; 860 } 861 } 862 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]); 863 } 864 #endif 865 866 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 867 868 // 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); 869 870 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 871 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 872 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 873 max_acl_data_packet_length = hci_stack->le_data_packets_length; 874 } 875 876 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 877 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 878 max_acl_data_packet_length = connection->le_max_tx_octets; 879 } 880 #endif 881 882 log_debug("hci_send_acl_packet_fragments entered"); 883 884 uint8_t status = ERROR_CODE_SUCCESS; 885 // multiple packets could be send on a synchronous HCI transport 886 while (true){ 887 888 log_debug("hci_send_acl_packet_fragments loop entered"); 889 890 // get current data 891 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 892 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 893 bool more_fragments = false; 894 895 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 896 if (current_acl_data_packet_length > max_acl_data_packet_length){ 897 more_fragments = true; 898 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 899 } 900 901 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 902 if (acl_header_pos > 0u){ 903 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 904 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 905 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 906 } 907 908 // update header len 909 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 910 911 // count packet 912 connection->num_packets_sent++; 913 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 914 915 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 916 if (more_fragments){ 917 // update start of next fragment to send 918 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 919 } else { 920 // done 921 hci_stack->acl_fragmentation_pos = 0; 922 hci_stack->acl_fragmentation_total_size = 0; 923 } 924 925 // send packet 926 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 927 const int size = current_acl_data_packet_length + 4; 928 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 929 hci_stack->acl_fragmentation_tx_active = 1; 930 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 931 if (err != 0){ 932 // no error from HCI Transport expected 933 status = ERROR_CODE_HARDWARE_FAILURE; 934 } 935 936 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 937 hci_controller_dump_packets(); 938 #endif 939 940 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 941 942 // done yet? 943 if (!more_fragments) break; 944 945 // can send more? 946 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 947 } 948 949 log_debug("hci_send_acl_packet_fragments loop over"); 950 951 // release buffer now for synchronous transport 952 if (hci_transport_synchronous()){ 953 hci_stack->acl_fragmentation_tx_active = 0; 954 hci_release_packet_buffer(); 955 hci_emit_transport_packet_sent(); 956 } 957 958 return status; 959 } 960 961 // pre: caller has reserved the packet buffer 962 uint8_t hci_send_acl_packet_buffer(int size){ 963 btstack_assert(hci_stack->hci_packet_buffer_reserved); 964 965 uint8_t * packet = hci_stack->hci_packet_buffer; 966 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 967 968 hci_connection_t *connection = hci_connection_for_handle( con_handle); 969 if (!connection) { 970 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 971 hci_release_packet_buffer(); 972 hci_emit_transport_packet_sent(); 973 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 974 } 975 976 // check for free places on Bluetooth module 977 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 978 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 979 hci_release_packet_buffer(); 980 hci_emit_transport_packet_sent(); 981 return BTSTACK_ACL_BUFFERS_FULL; 982 } 983 984 #ifdef ENABLE_CLASSIC 985 hci_connection_timestamp(connection); 986 #endif 987 988 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 989 990 // setup data 991 hci_stack->acl_fragmentation_total_size = size; 992 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 993 994 return hci_send_acl_packet_fragments(connection); 995 } 996 997 #ifdef ENABLE_CLASSIC 998 // pre: caller has reserved the packet buffer 999 uint8_t hci_send_sco_packet_buffer(int size){ 1000 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1001 1002 uint8_t * packet = hci_stack->hci_packet_buffer; 1003 1004 // skip checks in loopback mode 1005 if (!hci_stack->loopback_mode){ 1006 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1007 1008 // check for free places on Bluetooth module 1009 if (!hci_can_send_prepared_sco_packet_now()) { 1010 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1011 hci_release_packet_buffer(); 1012 hci_emit_transport_packet_sent(); 1013 return BTSTACK_ACL_BUFFERS_FULL; 1014 } 1015 1016 // track send packet in connection struct 1017 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1018 if (!connection) { 1019 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1020 hci_release_packet_buffer(); 1021 hci_emit_transport_packet_sent(); 1022 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1023 } 1024 1025 if (hci_have_usb_transport()){ 1026 // token used 1027 hci_stack->sco_can_send_now = false; 1028 } else { 1029 if (hci_stack->synchronous_flow_control_enabled){ 1030 connection->num_packets_sent++; 1031 } else { 1032 connection->sco_tx_ready--; 1033 } 1034 } 1035 } 1036 1037 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1038 1039 #ifdef HAVE_SCO_TRANSPORT 1040 hci_stack->sco_transport->send_packet(packet, size); 1041 hci_release_packet_buffer(); 1042 hci_emit_transport_packet_sent(); 1043 1044 return 0; 1045 #else 1046 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1047 if (hci_transport_synchronous()){ 1048 hci_release_packet_buffer(); 1049 hci_emit_transport_packet_sent(); 1050 } 1051 1052 if (err != 0){ 1053 return ERROR_CODE_HARDWARE_FAILURE; 1054 } 1055 return ERROR_CODE_SUCCESS; 1056 #endif 1057 } 1058 #endif 1059 1060 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1061 static uint8_t hci_send_iso_packet_fragments(void){ 1062 1063 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1064 uint8_t status = ERROR_CODE_SUCCESS; 1065 // multiple packets could be send on a synchronous HCI transport 1066 while (true){ 1067 1068 // get current data 1069 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1070 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1071 bool more_fragments = false; 1072 1073 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1074 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1075 more_fragments = true; 1076 current_iso_data_packet_length = max_iso_data_packet_length; 1077 } 1078 1079 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1080 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1081 uint8_t pb_flags; 1082 if (iso_header_pos == 0u){ 1083 // first fragment, keep TS field 1084 pb_flags = more_fragments ? 0x00 : 0x02; 1085 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1086 } else { 1087 // later fragment, drop TS field 1088 pb_flags = more_fragments ? 0x01 : 0x03; 1089 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1090 } 1091 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1092 1093 // update header len 1094 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1095 1096 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1097 if (more_fragments){ 1098 // update start of next fragment to send 1099 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1100 } else { 1101 // done 1102 hci_stack->iso_fragmentation_pos = 0; 1103 hci_stack->iso_fragmentation_total_size = 0; 1104 } 1105 1106 // send packet 1107 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1108 const int size = current_iso_data_packet_length + 4; 1109 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1110 hci_stack->iso_fragmentation_tx_active = true; 1111 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1112 if (err != 0){ 1113 // no error from HCI Transport expected 1114 status = ERROR_CODE_HARDWARE_FAILURE; 1115 } 1116 1117 // done yet? 1118 if (!more_fragments) break; 1119 1120 // can send more? 1121 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1122 } 1123 1124 // release buffer now for synchronous transport 1125 if (hci_transport_synchronous()){ 1126 hci_stack->iso_fragmentation_tx_active = false; 1127 hci_release_packet_buffer(); 1128 hci_emit_transport_packet_sent(); 1129 } 1130 1131 return status; 1132 } 1133 1134 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1135 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1136 1137 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1138 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1139 if (iso_stream == NULL){ 1140 hci_release_packet_buffer(); 1141 hci_iso_notify_can_send_now(); 1142 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1143 } 1144 1145 // TODO: check for space on controller 1146 1147 // skip iso packets if needed 1148 if (iso_stream->num_packets_to_skip > 0){ 1149 iso_stream->num_packets_to_skip--; 1150 // pretend it was processed and trigger next one 1151 hci_release_packet_buffer(); 1152 hci_iso_notify_can_send_now(); 1153 return ERROR_CODE_SUCCESS; 1154 } 1155 1156 // track outgoing packet sent 1157 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1158 iso_stream->num_packets_sent++; 1159 1160 // setup data 1161 hci_stack->iso_fragmentation_total_size = size; 1162 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1163 1164 return hci_send_iso_packet_fragments(); 1165 } 1166 #endif 1167 1168 static void acl_handler(uint8_t *packet, uint16_t size){ 1169 1170 // get info 1171 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1172 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1173 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1174 uint16_t acl_length = READ_ACL_LENGTH(packet); 1175 1176 // ignore non-registered handle 1177 if (!conn){ 1178 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1179 return; 1180 } 1181 1182 // assert packet is complete 1183 if ((acl_length + 4u) != size){ 1184 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1185 return; 1186 } 1187 1188 #ifdef ENABLE_CLASSIC 1189 // update idle timestamp 1190 hci_connection_timestamp(conn); 1191 #endif 1192 1193 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1194 hci_stack->host_completed_packets = 1; 1195 conn->num_packets_completed++; 1196 #endif 1197 1198 // handle different packet types 1199 switch (acl_flags & 0x03u) { 1200 1201 case 0x01: // continuation fragment 1202 1203 // sanity checks 1204 if (conn->acl_recombination_pos == 0u) { 1205 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1206 return; 1207 } 1208 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1209 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1210 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1211 conn->acl_recombination_pos = 0; 1212 return; 1213 } 1214 1215 // append fragment payload (header already stored) 1216 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1217 &packet[4], acl_length); 1218 conn->acl_recombination_pos += acl_length; 1219 1220 // forward complete L2CAP packet if complete. 1221 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1222 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1223 // reset recombination buffer 1224 conn->acl_recombination_length = 0; 1225 conn->acl_recombination_pos = 0; 1226 } 1227 break; 1228 1229 case 0x02: { // first fragment 1230 1231 // sanity check 1232 if (conn->acl_recombination_pos) { 1233 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1234 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1235 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1236 } 1237 conn->acl_recombination_pos = 0; 1238 } 1239 1240 // peek into L2CAP packet! 1241 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1242 1243 // compare fragment size to L2CAP packet size 1244 if (acl_length >= (l2cap_length + 4u)){ 1245 // forward fragment as L2CAP packet 1246 hci_emit_acl_packet(packet, acl_length + 4u); 1247 } else { 1248 1249 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1250 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1251 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1252 return; 1253 } 1254 1255 // store first fragment and tweak acl length for complete package 1256 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1257 packet, acl_length + 4u); 1258 conn->acl_recombination_pos = acl_length + 4u; 1259 conn->acl_recombination_length = l2cap_length; 1260 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1261 } 1262 break; 1263 1264 } 1265 default: 1266 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1267 return; 1268 } 1269 1270 // execute main loop 1271 hci_run(); 1272 } 1273 1274 static void hci_connection_stop_timer(hci_connection_t * conn){ 1275 btstack_run_loop_remove_timer(&conn->timeout); 1276 #ifdef ENABLE_CLASSIC 1277 btstack_run_loop_remove_timer(&conn->timeout_sco); 1278 #endif 1279 } 1280 1281 static void hci_shutdown_connection(hci_connection_t *conn){ 1282 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1283 1284 #ifdef ENABLE_CLASSIC 1285 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1286 bd_addr_type_t addr_type = conn->address_type; 1287 #endif 1288 #ifdef HAVE_SCO_TRANSPORT 1289 hci_con_handle_t con_handle = conn->con_handle; 1290 #endif 1291 #endif 1292 1293 hci_connection_stop_timer(conn); 1294 1295 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1296 btstack_memory_hci_connection_free( conn ); 1297 1298 // now it's gone 1299 hci_emit_nr_connections_changed(); 1300 1301 #ifdef ENABLE_CLASSIC 1302 #ifdef ENABLE_SCO_OVER_HCI 1303 // update SCO 1304 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1305 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1306 } 1307 #endif 1308 #ifdef HAVE_SCO_TRANSPORT 1309 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1310 hci_stack->sco_transport->close(con_handle); 1311 } 1312 #endif 1313 #endif 1314 } 1315 1316 #ifdef ENABLE_CLASSIC 1317 1318 static const uint16_t hci_acl_packet_type_sizes[] = { 1319 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1320 HCI_ACL_DH1_SIZE, 0, 0, 0, 1321 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1322 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1323 }; 1324 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1325 0, // 3 slot packets 1326 1, // 5 slot packets 1327 25, // EDR 2 mpbs 1328 26, // EDR 3 mbps 1329 39, // 3 slot EDR packts 1330 40, // 5 slot EDR packet 1331 }; 1332 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1333 0x0f00, // 3 slot packets 1334 0xf000, // 5 slot packets 1335 0x1102, // EDR 2 mpbs 1336 0x2204, // EDR 3 mbps 1337 0x0300, // 3 slot EDR packts 1338 0x3000, // 5 slot EDR packet 1339 }; 1340 1341 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1342 // enable packet types based on size 1343 uint16_t packet_types = 0; 1344 unsigned int i; 1345 for (i=0;i<16;i++){ 1346 if (hci_acl_packet_type_sizes[i] == 0) continue; 1347 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1348 packet_types |= 1 << i; 1349 } 1350 } 1351 // disable packet types due to missing local supported features 1352 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1353 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1354 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1355 if (feature_set) continue; 1356 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1357 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1358 } 1359 return packet_types; 1360 } 1361 1362 uint16_t hci_usable_acl_packet_types(void){ 1363 // flip bits for "may not be used" 1364 return hci_stack->usable_packet_types_acl ^ 0x3306; 1365 } 1366 1367 static const struct { 1368 uint8_t feature_index; 1369 uint16_t feature_packet_mask; 1370 } hci_sco_packet_type_feature_requirements[] = { 1371 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1372 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1373 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1374 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1375 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1376 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1377 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1378 }; 1379 1380 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1381 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1382 unsigned int i; 1383 // disable packet types due to missing local supported features 1384 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1385 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1386 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1387 if (feature_set) continue; 1388 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1389 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1390 } 1391 return packet_types; 1392 } 1393 1394 uint16_t hci_usable_sco_packet_types(void){ 1395 return hci_stack->usable_packet_types_sco; 1396 } 1397 1398 #endif 1399 1400 uint8_t* hci_get_outgoing_packet_buffer(void){ 1401 // hci packet buffer is >= acl data packet length 1402 return hci_stack->hci_packet_buffer; 1403 } 1404 1405 uint16_t hci_max_acl_data_packet_length(void){ 1406 return hci_stack->acl_data_packet_length; 1407 } 1408 1409 #ifdef ENABLE_CLASSIC 1410 bool hci_extended_sco_link_supported(void){ 1411 // No. 31, byte 3, bit 7 1412 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1413 } 1414 #endif 1415 1416 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1417 // No. 54, byte 6, bit 6 1418 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1419 } 1420 1421 #ifdef ENABLE_CLASSIC 1422 static int gap_ssp_supported(void){ 1423 // No. 51, byte 6, bit 3 1424 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1425 } 1426 #endif 1427 1428 static int hci_classic_supported(void){ 1429 #ifdef ENABLE_CLASSIC 1430 // No. 37, byte 4, bit 5, = No BR/EDR Support 1431 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1432 #else 1433 return 0; 1434 #endif 1435 } 1436 1437 static int hci_le_supported(void){ 1438 #ifdef ENABLE_BLE 1439 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1440 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1441 #else 1442 return 0; 1443 #endif 1444 } 1445 1446 static bool hci_command_supported(uint8_t command_index){ 1447 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1448 } 1449 1450 #ifdef ENABLE_BLE 1451 1452 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1453 static bool hci_extended_advertising_supported(void){ 1454 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1455 } 1456 #endif 1457 1458 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1459 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1460 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1461 } else { 1462 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1463 } 1464 } 1465 1466 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1467 *addr_type = hci_stack->le_own_addr_type; 1468 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1469 } 1470 1471 #ifdef ENABLE_LE_PERIPHERAL 1472 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1473 *addr_type = hci_stack->le_advertisements_own_addr_type; 1474 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1475 }; 1476 #endif 1477 1478 #ifdef ENABLE_LE_CENTRAL 1479 1480 /** 1481 * @brief Get own addr type and address used for LE connections (Central) 1482 */ 1483 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1484 *addr_type = hci_stack->le_connection_own_addr_type; 1485 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1486 } 1487 1488 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1489 1490 uint16_t offset = 3; 1491 uint8_t num_reports = packet[offset]; 1492 offset += 1; 1493 1494 uint16_t i; 1495 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1496 for (i=0; (i<num_reports) && (offset < size);i++){ 1497 // sanity checks on data_length: 1498 uint8_t data_length = packet[offset + 8]; 1499 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1500 if ((offset + 9u + data_length + 1u) > size) return; 1501 // setup event 1502 uint8_t event_size = 10u + data_length; 1503 uint16_t pos = 0; 1504 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1505 event[pos++] = event_size; 1506 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1507 offset += 8; 1508 pos += 8; 1509 event[pos++] = packet[offset + 1 + data_length]; // rssi 1510 event[pos++] = data_length; 1511 offset++; 1512 (void)memcpy(&event[pos], &packet[offset], data_length); 1513 pos += data_length; 1514 offset += data_length + 1u; // rssi 1515 hci_emit_event(event, pos, 1); 1516 } 1517 } 1518 1519 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1520 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1521 uint16_t offset = 3; 1522 uint8_t num_reports = packet[offset++]; 1523 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1524 uint8_t i; 1525 for (i=0; (i<num_reports) && (offset < size);i++){ 1526 // sanity checks on data_length: 1527 uint16_t data_length = packet[offset + 23]; 1528 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1529 if ((offset + 24u + data_length) > size) return; 1530 uint16_t event_type = little_endian_read_16(packet, offset); 1531 offset += 2; 1532 if ((event_type & 0x10) != 0) { 1533 // setup legacy event 1534 uint8_t legacy_event_type; 1535 switch (event_type){ 1536 case 0b0010011: 1537 // ADV_IND 1538 legacy_event_type = 0; 1539 break; 1540 case 0b0010101: 1541 // ADV_DIRECT_IND 1542 legacy_event_type = 1; 1543 break; 1544 case 0b0010010: 1545 // ADV_SCAN_IND 1546 legacy_event_type = 2; 1547 break; 1548 case 0b0010000: 1549 // ADV_NONCONN_IND 1550 legacy_event_type = 3; 1551 break; 1552 case 0b0011011: 1553 case 0b0011010: 1554 // SCAN_RSP 1555 legacy_event_type = 4; 1556 break; 1557 default: 1558 legacy_event_type = 0; 1559 break; 1560 } 1561 uint16_t pos = 0; 1562 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1563 event[pos++] = 10u + data_length; 1564 event[pos++] = legacy_event_type; 1565 // copy address type + address 1566 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1567 offset += 7; 1568 pos += 7; 1569 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1570 offset += 4; 1571 // copy rssi 1572 event[pos++] = packet[offset++]; 1573 // skip periodic advertising interval and direct address 1574 offset += 9; 1575 // copy data len + data; 1576 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1577 pos += 1 +data_length; 1578 offset += 1+ data_length; 1579 hci_emit_event(event, pos, 1); 1580 } else { 1581 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1582 uint8_t report_len = 24 + data_length; 1583 event[1] = report_len; 1584 little_endian_store_16(event, 2, event_type); 1585 memcpy(&event[4], &packet[offset], report_len); 1586 offset += report_len; 1587 hci_emit_event(event, 2 + report_len, 1); 1588 } 1589 } 1590 } 1591 #endif 1592 1593 #endif 1594 #endif 1595 1596 #ifdef ENABLE_BLE 1597 #ifdef ENABLE_LE_PERIPHERAL 1598 static void hci_update_advertisements_enabled_for_current_roles(void){ 1599 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1600 // get number of active le slave connections 1601 int num_slave_connections = 0; 1602 btstack_linked_list_iterator_t it; 1603 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1604 while (btstack_linked_list_iterator_has_next(&it)){ 1605 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1606 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1607 if (con->state != OPEN) continue; 1608 if (con->role != HCI_ROLE_SLAVE) continue; 1609 if (!hci_is_le_connection(con)) continue; 1610 num_slave_connections++; 1611 } 1612 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1613 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1614 } else { 1615 hci_stack->le_advertisements_enabled_for_current_roles = false; 1616 } 1617 } 1618 #endif 1619 #endif 1620 1621 #ifdef ENABLE_CLASSIC 1622 static void gap_run_set_local_name(void){ 1623 hci_reserve_packet_buffer(); 1624 uint8_t * packet = hci_stack->hci_packet_buffer; 1625 // construct HCI Command and send 1626 uint16_t opcode = hci_write_local_name.opcode; 1627 hci_stack->last_cmd_opcode = opcode; 1628 packet[0] = opcode & 0xff; 1629 packet[1] = opcode >> 8; 1630 packet[2] = DEVICE_NAME_LEN; 1631 memset(&packet[3], 0, DEVICE_NAME_LEN); 1632 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1633 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1634 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1635 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1636 // expand '00:00:00:00:00:00' in name with bd_addr 1637 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1638 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1639 } 1640 1641 static void gap_run_set_eir_data(void){ 1642 hci_reserve_packet_buffer(); 1643 uint8_t * packet = hci_stack->hci_packet_buffer; 1644 // construct HCI Command in-place and send 1645 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1646 hci_stack->last_cmd_opcode = opcode; 1647 uint16_t offset = 0; 1648 packet[offset++] = opcode & 0xff; 1649 packet[offset++] = opcode >> 8; 1650 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1651 packet[offset++] = 0; // FEC not required 1652 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1653 if (hci_stack->eir_data){ 1654 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1655 ad_context_t context; 1656 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1657 uint8_t data_type = ad_iterator_get_data_type(&context); 1658 uint8_t size = ad_iterator_get_data_len(&context); 1659 const uint8_t *data = ad_iterator_get_data(&context); 1660 // copy item 1661 packet[offset++] = size + 1; 1662 packet[offset++] = data_type; 1663 memcpy(&packet[offset], data, size); 1664 // update name item 1665 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1666 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1667 } 1668 offset += size; 1669 } 1670 } else { 1671 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1672 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1673 packet[offset++] = bytes_to_copy + 1; 1674 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1675 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1676 // expand '00:00:00:00:00:00' in name with bd_addr 1677 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1678 } 1679 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1680 } 1681 1682 static void hci_run_gap_tasks_classic(void){ 1683 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1684 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1685 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1686 return; 1687 } 1688 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1689 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1690 gap_run_set_local_name(); 1691 return; 1692 } 1693 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1694 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1695 gap_run_set_eir_data(); 1696 return; 1697 } 1698 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1699 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1700 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1701 return; 1702 } 1703 // write page scan activity 1704 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1705 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1706 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1707 return; 1708 } 1709 // write page scan type 1710 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1711 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1712 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1713 return; 1714 } 1715 // write page timeout 1716 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1717 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1718 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1719 return; 1720 } 1721 // send scan enable 1722 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1723 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1724 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1725 return; 1726 } 1727 // send write scan activity 1728 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1729 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1730 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1731 return; 1732 } 1733 // send write inquiry transmit power level 1734 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1735 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1736 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1737 return; 1738 } 1739 } 1740 #endif 1741 1742 #ifndef HAVE_HOST_CONTROLLER_API 1743 1744 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1745 if (!hci_stack->config) return 0; 1746 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1747 // Limit baud rate for Broadcom chipsets to 3 mbps 1748 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1749 baud_rate = 3000000; 1750 } 1751 return baud_rate; 1752 } 1753 1754 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1755 UNUSED(ds); 1756 1757 switch (hci_stack->substate){ 1758 case HCI_INIT_W4_SEND_RESET: 1759 log_info("Resend HCI Reset"); 1760 hci_stack->substate = HCI_INIT_SEND_RESET; 1761 hci_stack->num_cmd_packets = 1; 1762 hci_run(); 1763 break; 1764 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1765 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1766 if (hci_stack->hci_transport->reset_link){ 1767 hci_stack->hci_transport->reset_link(); 1768 } 1769 1770 /* fall through */ 1771 1772 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1773 log_info("Resend HCI Reset - CSR Warm Boot"); 1774 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1775 hci_stack->num_cmd_packets = 1; 1776 hci_run(); 1777 break; 1778 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1779 if (hci_stack->hci_transport->set_baudrate){ 1780 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1781 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1782 hci_stack->hci_transport->set_baudrate(baud_rate); 1783 } 1784 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1785 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1786 if (hci_stack->hci_transport->reset_link){ 1787 log_info("Link Reset"); 1788 hci_stack->hci_transport->reset_link(); 1789 } 1790 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1791 hci_run(); 1792 } 1793 break; 1794 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1795 // otherwise continue 1796 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1797 hci_send_cmd(&hci_read_local_supported_commands); 1798 break; 1799 default: 1800 break; 1801 } 1802 } 1803 #endif 1804 1805 static void hci_initializing_next_state(void){ 1806 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1807 } 1808 1809 static void hci_init_done(void){ 1810 // done. tell the app 1811 log_info("hci_init_done -> HCI_STATE_WORKING"); 1812 hci_stack->state = HCI_STATE_WORKING; 1813 hci_emit_state(); 1814 } 1815 1816 // assumption: hci_can_send_command_packet_now() == true 1817 static void hci_initializing_run(void){ 1818 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1819 1820 if (!hci_can_send_command_packet_now()) return; 1821 1822 #ifndef HAVE_HOST_CONTROLLER_API 1823 bool need_baud_change = hci_stack->config 1824 && hci_stack->chipset 1825 && hci_stack->chipset->set_baudrate_command 1826 && hci_stack->hci_transport->set_baudrate 1827 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1828 #endif 1829 1830 switch (hci_stack->substate){ 1831 case HCI_INIT_SEND_RESET: 1832 hci_state_reset(); 1833 1834 #ifndef HAVE_HOST_CONTROLLER_API 1835 // prepare reset if command complete not received in 100ms 1836 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1837 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1838 btstack_run_loop_add_timer(&hci_stack->timeout); 1839 #endif 1840 // send command 1841 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1842 hci_send_cmd(&hci_reset); 1843 break; 1844 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1845 hci_send_cmd(&hci_read_local_version_information); 1846 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1847 break; 1848 1849 #ifndef HAVE_HOST_CONTROLLER_API 1850 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1851 hci_state_reset(); 1852 // prepare reset if command complete not received in 100ms 1853 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1854 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1855 btstack_run_loop_add_timer(&hci_stack->timeout); 1856 // send command 1857 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1858 hci_send_cmd(&hci_reset); 1859 break; 1860 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1861 hci_state_reset(); 1862 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1863 hci_send_cmd(&hci_reset); 1864 break; 1865 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1866 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1867 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1868 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1869 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1870 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1871 break; 1872 } 1873 case HCI_INIT_SET_BD_ADDR: 1874 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1875 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1876 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1877 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1878 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1879 break; 1880 case HCI_INIT_SEND_READ_LOCAL_NAME: 1881 #ifdef ENABLE_CLASSIC 1882 hci_send_cmd(&hci_read_local_name); 1883 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1884 break; 1885 #endif 1886 /* fall through */ 1887 1888 case HCI_INIT_SEND_BAUD_CHANGE: 1889 if (need_baud_change) { 1890 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1891 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1892 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1893 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1894 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1895 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1896 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1897 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1898 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1899 btstack_run_loop_add_timer(&hci_stack->timeout); 1900 } 1901 break; 1902 } 1903 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1904 1905 /* fall through */ 1906 1907 case HCI_INIT_CUSTOM_INIT: 1908 case HCI_INIT_CUSTOM_PRE_INIT: 1909 // Custom initialization 1910 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1911 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1912 bool send_cmd = false; 1913 switch (hci_stack->chipset_result){ 1914 case BTSTACK_CHIPSET_VALID_COMMAND: 1915 send_cmd = true; 1916 switch (hci_stack->substate){ 1917 case HCI_INIT_CUSTOM_INIT: 1918 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1919 break; 1920 case HCI_INIT_CUSTOM_PRE_INIT: 1921 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1922 break; 1923 default: 1924 btstack_assert(false); 1925 break; 1926 } 1927 break; 1928 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1929 send_cmd = true; 1930 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1931 log_info("CSR Warm Boot"); 1932 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1933 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1934 btstack_run_loop_add_timer(&hci_stack->timeout); 1935 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1936 && hci_stack->config 1937 && hci_stack->chipset 1938 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1939 && hci_stack->hci_transport->set_baudrate 1940 && hci_transport_uart_get_main_baud_rate()){ 1941 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1942 } else { 1943 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1944 } 1945 break; 1946 default: 1947 break; 1948 } 1949 1950 if (send_cmd){ 1951 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1952 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1953 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1954 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1955 break; 1956 } 1957 log_info("Init script done"); 1958 1959 // Custom Pre-Init complete, start regular init with HCI Reset 1960 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1961 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1962 hci_send_cmd(&hci_reset); 1963 break; 1964 } 1965 1966 // Init script download on Broadcom chipsets causes: 1967 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1968 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1969 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1970 1971 // - baud rate to reset, restore UART baud rate if needed 1972 if (need_baud_change) { 1973 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1974 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1975 hci_stack->hci_transport->set_baudrate(baud_rate); 1976 } 1977 1978 uint16_t bcm_delay_ms = 300; 1979 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1980 // -> Work around: wait here. 1981 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1982 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1983 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1984 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1985 btstack_run_loop_add_timer(&hci_stack->timeout); 1986 break; 1987 } 1988 } 1989 #endif 1990 /* fall through */ 1991 1992 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1993 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1994 hci_send_cmd(&hci_read_local_supported_commands); 1995 break; 1996 case HCI_INIT_READ_BD_ADDR: 1997 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1998 hci_send_cmd(&hci_read_bd_addr); 1999 break; 2000 case HCI_INIT_READ_BUFFER_SIZE: 2001 // only read buffer size if supported 2002 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2003 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2004 hci_send_cmd(&hci_read_buffer_size); 2005 break; 2006 } 2007 2008 /* fall through */ 2009 2010 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2011 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2012 hci_send_cmd(&hci_read_local_supported_features); 2013 break; 2014 2015 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2016 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2017 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2018 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2019 break; 2020 case HCI_INIT_HOST_BUFFER_SIZE: 2021 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2022 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2023 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2024 break; 2025 #endif 2026 2027 case HCI_INIT_SET_EVENT_MASK: 2028 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2029 if (hci_le_supported()){ 2030 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2031 } else { 2032 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2033 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2034 } 2035 break; 2036 2037 case HCI_INIT_SET_EVENT_MASK_2: 2038 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2039 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2040 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2041 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2042 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2043 // Encryption Change Event v2 - bit 25 2044 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2045 break; 2046 } 2047 2048 #ifdef ENABLE_CLASSIC 2049 /* fall through */ 2050 2051 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2052 if (hci_classic_supported() && gap_ssp_supported()){ 2053 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2054 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2055 break; 2056 } 2057 2058 /* fall through */ 2059 2060 case HCI_INIT_WRITE_INQUIRY_MODE: 2061 if (hci_classic_supported()){ 2062 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2063 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2064 break; 2065 } 2066 2067 /* fall through */ 2068 2069 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2070 // skip write secure connections host support if not supported or disabled 2071 if (hci_classic_supported() && hci_stack->secure_connections_enable 2072 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2073 hci_stack->secure_connections_active = true; 2074 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2075 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2076 break; 2077 } 2078 2079 /* fall through */ 2080 2081 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2082 // skip set min encryption key size 2083 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2084 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2085 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2086 break; 2087 } 2088 2089 #ifdef ENABLE_SCO_OVER_HCI 2090 /* fall through */ 2091 2092 // only sent if ENABLE_SCO_OVER_HCI is defined 2093 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2094 // skip write synchronous flow control if not supported 2095 if (hci_classic_supported() 2096 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2097 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2098 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2099 break; 2100 } 2101 /* fall through */ 2102 2103 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2104 // skip write default erroneous data reporting if not supported 2105 if (hci_classic_supported() 2106 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2107 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2108 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2109 break; 2110 } 2111 #endif 2112 2113 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2114 /* fall through */ 2115 2116 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2117 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2118 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2119 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2120 #ifdef ENABLE_SCO_OVER_HCI 2121 log_info("BCM: Route SCO data via HCI transport"); 2122 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2123 #endif 2124 #ifdef ENABLE_SCO_OVER_PCM 2125 log_info("BCM: Route SCO data via PCM interface"); 2126 #ifdef ENABLE_BCM_PCM_WBS 2127 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2128 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2129 #else 2130 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2131 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2132 #endif 2133 #endif 2134 break; 2135 } 2136 #endif 2137 2138 #ifdef ENABLE_SCO_OVER_PCM 2139 /* fall through */ 2140 2141 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2142 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2143 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2144 log_info("BCM: Config PCM interface for I2S"); 2145 #ifdef ENABLE_BCM_PCM_WBS 2146 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2147 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2148 #else 2149 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2150 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2151 #endif 2152 break; 2153 } 2154 #endif 2155 #endif 2156 2157 #ifdef ENABLE_BLE 2158 /* fall through */ 2159 2160 // LE INIT 2161 case HCI_INIT_LE_READ_BUFFER_SIZE: 2162 if (hci_le_supported()){ 2163 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2164 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2165 hci_send_cmd(&hci_le_read_buffer_size_v2); 2166 } else { 2167 hci_send_cmd(&hci_le_read_buffer_size); 2168 } 2169 break; 2170 } 2171 2172 /* fall through */ 2173 2174 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2175 // skip write le host if not supported (e.g. on LE only EM9301) 2176 if (hci_le_supported() 2177 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2178 // LE Supported Host = 1, Simultaneous Host = 0 2179 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2180 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2181 break; 2182 } 2183 2184 /* fall through */ 2185 2186 case HCI_INIT_LE_SET_EVENT_MASK: 2187 if (hci_le_supported()){ 2188 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2189 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2190 break; 2191 } 2192 #endif 2193 2194 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2195 /* fall through */ 2196 2197 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2198 if (hci_le_supported() 2199 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2200 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2201 hci_send_cmd(&hci_le_read_maximum_data_length); 2202 break; 2203 } 2204 2205 /* fall through */ 2206 2207 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2208 if (hci_le_supported() 2209 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2210 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2211 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2212 break; 2213 } 2214 #endif 2215 2216 #ifdef ENABLE_LE_CENTRAL 2217 /* fall through */ 2218 2219 case HCI_INIT_READ_WHITE_LIST_SIZE: 2220 if (hci_le_supported()){ 2221 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2222 hci_send_cmd(&hci_le_read_white_list_size); 2223 break; 2224 } 2225 2226 #endif 2227 2228 #ifdef ENABLE_LE_PERIPHERAL 2229 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2230 /* fall through */ 2231 2232 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2233 if (hci_extended_advertising_supported()){ 2234 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2235 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2236 break; 2237 } 2238 #endif 2239 #endif 2240 /* fall through */ 2241 2242 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2243 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2244 if (hci_le_supported()) { 2245 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2246 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2247 break; 2248 } 2249 #endif 2250 2251 /* fall through */ 2252 2253 case HCI_INIT_DONE: 2254 hci_stack->substate = HCI_INIT_DONE; 2255 // main init sequence complete 2256 #ifdef ENABLE_CLASSIC 2257 // check if initial Classic GAP Tasks are completed 2258 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2259 hci_run_gap_tasks_classic(); 2260 break; 2261 } 2262 #endif 2263 #ifdef ENABLE_BLE 2264 #ifdef ENABLE_LE_CENTRAL 2265 // check if initial LE GAP Tasks are completed 2266 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2267 hci_run_general_gap_le(); 2268 break; 2269 } 2270 #endif 2271 #endif 2272 hci_init_done(); 2273 break; 2274 2275 default: 2276 return; 2277 } 2278 } 2279 2280 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2281 bool command_completed = false; 2282 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2283 uint16_t opcode = little_endian_read_16(packet,3); 2284 if (opcode == hci_stack->last_cmd_opcode){ 2285 command_completed = true; 2286 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2287 } else { 2288 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2289 } 2290 } 2291 2292 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2293 uint8_t status = packet[2]; 2294 uint16_t opcode = little_endian_read_16(packet,4); 2295 if (opcode == hci_stack->last_cmd_opcode){ 2296 if (status){ 2297 command_completed = true; 2298 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2299 } else { 2300 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2301 } 2302 } else { 2303 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2304 } 2305 } 2306 #ifndef HAVE_HOST_CONTROLLER_API 2307 // Vendor == CSR 2308 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2309 // TODO: track actual command 2310 command_completed = true; 2311 } 2312 2313 // Vendor == Toshiba 2314 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2315 // TODO: track actual command 2316 command_completed = true; 2317 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2318 hci_stack->num_cmd_packets = 1; 2319 } 2320 #endif 2321 2322 return command_completed; 2323 } 2324 2325 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2326 2327 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2328 2329 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2330 2331 #ifndef HAVE_HOST_CONTROLLER_API 2332 2333 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2334 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2335 // 2336 // HCI Reset 2337 // Timeout 100 ms 2338 // HCI Reset 2339 // Command Complete Reset 2340 // HCI Read Local Version Information 2341 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2342 // hang... 2343 // 2344 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2345 if (!command_completed 2346 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2347 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2348 2349 uint16_t opcode = little_endian_read_16(packet,3); 2350 if (opcode == hci_reset.opcode){ 2351 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2352 return; 2353 } 2354 } 2355 2356 // CSR & H5 2357 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2358 if (!command_completed 2359 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2360 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2361 2362 uint16_t opcode = little_endian_read_16(packet,3); 2363 if (opcode == hci_reset.opcode){ 2364 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2365 return; 2366 } 2367 } 2368 2369 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2370 // fix: Correct substate and behave as command below 2371 if (command_completed){ 2372 switch (hci_stack->substate){ 2373 case HCI_INIT_SEND_RESET: 2374 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2375 break; 2376 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2377 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2378 break; 2379 default: 2380 break; 2381 } 2382 } 2383 2384 #endif 2385 2386 if (!command_completed) return; 2387 2388 bool need_baud_change = false; 2389 bool need_addr_change = false; 2390 2391 #ifndef HAVE_HOST_CONTROLLER_API 2392 need_baud_change = hci_stack->config 2393 && hci_stack->chipset 2394 && hci_stack->chipset->set_baudrate_command 2395 && hci_stack->hci_transport->set_baudrate 2396 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2397 2398 need_addr_change = hci_stack->custom_bd_addr_set 2399 && hci_stack->chipset 2400 && hci_stack->chipset->set_bd_addr_command; 2401 #endif 2402 2403 switch(hci_stack->substate){ 2404 2405 #ifndef HAVE_HOST_CONTROLLER_API 2406 case HCI_INIT_SEND_RESET: 2407 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2408 // fix: just correct substate and behave as command below 2409 2410 /* fall through */ 2411 #endif 2412 2413 case HCI_INIT_W4_SEND_RESET: 2414 btstack_run_loop_remove_timer(&hci_stack->timeout); 2415 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2416 return; 2417 2418 #ifndef HAVE_HOST_CONTROLLER_API 2419 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2420 // for STLC2500D, baud rate change already happened. 2421 // for others, baud rate gets changed now 2422 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2423 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2424 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2425 hci_stack->hci_transport->set_baudrate(baud_rate); 2426 } 2427 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2428 return; 2429 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2430 btstack_run_loop_remove_timer(&hci_stack->timeout); 2431 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2432 return; 2433 case HCI_INIT_W4_CUSTOM_INIT: 2434 // repeat custom init 2435 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2436 return; 2437 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2438 // repeat custom init 2439 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2440 return; 2441 #endif 2442 2443 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2444 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2445 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2446 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2447 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2448 return; 2449 } 2450 if (need_addr_change){ 2451 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2452 return; 2453 } 2454 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2455 return; 2456 #ifndef HAVE_HOST_CONTROLLER_API 2457 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2458 if (need_baud_change){ 2459 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2460 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2461 hci_stack->hci_transport->set_baudrate(baud_rate); 2462 } 2463 if (need_addr_change){ 2464 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2465 return; 2466 } 2467 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2468 return; 2469 case HCI_INIT_W4_SET_BD_ADDR: 2470 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2471 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2472 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2473 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2474 return; 2475 } 2476 // skipping st warm boot 2477 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2478 return; 2479 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2480 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2481 return; 2482 #endif 2483 2484 case HCI_INIT_DONE: 2485 // set state if we came here by fall through 2486 hci_stack->substate = HCI_INIT_DONE; 2487 return; 2488 2489 default: 2490 break; 2491 } 2492 hci_initializing_next_state(); 2493 } 2494 2495 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2496 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2497 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2498 // check if we have been aware of the HCI connection 2499 switch (conn->state){ 2500 case SENT_CREATE_CONNECTION: 2501 case RECEIVED_CONNECTION_REQUEST: 2502 case ACCEPTED_CONNECTION_REQUEST: 2503 break; 2504 default: 2505 return; 2506 } 2507 2508 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2509 bd_addr_t bd_address; 2510 (void)memcpy(&bd_address, conn->address, 6); 2511 2512 #ifdef ENABLE_CLASSIC 2513 // cache needed data 2514 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2515 #endif 2516 2517 // connection failed, remove entry 2518 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2519 btstack_memory_hci_connection_free( conn ); 2520 2521 #ifdef ENABLE_CLASSIC 2522 // notify client if dedicated bonding 2523 if (notify_dedicated_bonding_failed){ 2524 log_info("hci notify_dedicated_bonding_failed"); 2525 hci_emit_dedicated_bonding_result(bd_address, status); 2526 } 2527 2528 // if authentication error, also delete link key 2529 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2530 gap_drop_link_key_for_bd_addr(bd_address); 2531 } 2532 #else 2533 UNUSED(status); 2534 #endif 2535 } 2536 2537 #ifdef ENABLE_CLASSIC 2538 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2539 // SSP Controller 2540 if (features[6] & (1 << 3)){ 2541 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2542 } 2543 // eSCO 2544 if (features[3] & (1<<7)){ 2545 conn->remote_supported_features[0] |= 1; 2546 } 2547 // Extended features 2548 if (features[7] & (1<<7)){ 2549 conn->remote_supported_features[0] |= 2; 2550 } 2551 // SCO packet types 2552 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2553 } 2554 2555 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2556 // SSP Host 2557 if (features[0] & (1 << 0)){ 2558 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2559 } 2560 // SC Host 2561 if (features[0] & (1 << 3)){ 2562 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2563 } 2564 } 2565 2566 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2567 // SC Controller 2568 if (features[1] & (1 << 0)){ 2569 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2570 } 2571 } 2572 2573 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2574 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2575 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2576 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2577 if (conn->bonding_flags & BONDING_DEDICATED){ 2578 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2579 } 2580 } 2581 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2582 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2583 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2584 } 2585 2586 #endif 2587 2588 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2589 // handle BT initialization 2590 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2591 hci_initializing_event_handler(packet, size); 2592 } 2593 2594 // help with BT sleep 2595 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2596 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2597 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2598 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2599 hci_initializing_next_state(); 2600 } 2601 } 2602 2603 #ifdef ENABLE_CLASSIC 2604 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2605 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2606 conn->requested_security_level = LEVEL_0; 2607 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2608 hci_emit_security_level(conn->con_handle, security_level); 2609 2610 // dedicated bonding 2611 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2612 conn->bonding_flags &= ~BONDING_DEDICATED; 2613 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2614 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2615 // emit dedicated bonding complete, don't disconnect 2616 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2617 #else 2618 // request disconnect, event is emitted after disconnect 2619 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2620 #endif 2621 } 2622 } 2623 2624 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2625 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2626 conn->encryption_key_size = encryption_key_size; 2627 2628 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2629 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2630 hci_handle_mutual_authentication_completed(conn); 2631 } else { 2632 // otherwise trigger remote feature request and send authentication request 2633 hci_trigger_remote_features_for_connection(conn); 2634 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2635 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2636 } 2637 } 2638 } 2639 #endif 2640 2641 static void hci_store_local_supported_commands(const uint8_t * packet){ 2642 // create mapping table 2643 #define X(name, offset, bit) { offset, bit }, 2644 static struct { 2645 uint8_t byte_offset; 2646 uint8_t bit_position; 2647 } supported_hci_commands_map [] = { 2648 SUPPORTED_HCI_COMMANDS 2649 }; 2650 #undef X 2651 2652 // create names for debug purposes 2653 #ifdef ENABLE_LOG_DEBUG 2654 #define X(name, offset, bit) #name, 2655 static const char * command_names[] = { 2656 SUPPORTED_HCI_COMMANDS 2657 }; 2658 #undef X 2659 #endif 2660 2661 hci_stack->local_supported_commands = 0; 2662 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2663 uint16_t i; 2664 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2665 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2666 #ifdef ENABLE_LOG_DEBUG 2667 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); 2668 #else 2669 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2670 #endif 2671 hci_stack->local_supported_commands |= (1LU << i); 2672 } 2673 } 2674 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2675 } 2676 2677 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2678 UNUSED(size); 2679 2680 uint16_t manufacturer; 2681 #ifdef ENABLE_CLASSIC 2682 hci_con_handle_t handle; 2683 hci_connection_t * conn; 2684 #endif 2685 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2686 uint8_t status; 2687 #endif 2688 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2689 le_audio_cig_t * cig; 2690 #endif 2691 2692 // get num cmd packets - limit to 1 to reduce complexity 2693 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2694 2695 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2696 switch (opcode){ 2697 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2698 if (packet[5]) break; 2699 // terminate, name 248 chars 2700 packet[6+248] = 0; 2701 log_info("local name: %s", &packet[6]); 2702 break; 2703 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2704 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2705 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2706 uint16_t acl_len = little_endian_read_16(packet, 6); 2707 uint16_t sco_len = packet[8]; 2708 2709 // determine usable ACL/SCO payload size 2710 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2711 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2712 2713 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2714 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2715 2716 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2717 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2718 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2719 } 2720 break; 2721 case HCI_OPCODE_HCI_READ_RSSI: 2722 if (packet[5] == ERROR_CODE_SUCCESS){ 2723 uint8_t event[5]; 2724 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2725 event[1] = 3; 2726 (void)memcpy(&event[2], &packet[6], 3); 2727 hci_emit_event(event, sizeof(event), 1); 2728 } 2729 break; 2730 #ifdef ENABLE_BLE 2731 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2732 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2733 hci_stack->le_iso_packets_total_num = packet[11]; 2734 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2735 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2736 2737 /* fall through */ 2738 2739 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2740 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2741 hci_stack->le_acl_packets_total_num = packet[8]; 2742 // determine usable ACL payload size 2743 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2744 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2745 } 2746 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); 2747 break; 2748 #endif 2749 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2750 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2751 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2752 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2753 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); 2754 break; 2755 #endif 2756 #ifdef ENABLE_LE_CENTRAL 2757 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2758 hci_stack->le_whitelist_capacity = packet[6]; 2759 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2760 break; 2761 #endif 2762 #ifdef ENABLE_LE_PERIPHERAL 2763 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2764 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2765 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2766 break; 2767 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2768 if (hci_stack->le_advertising_set_in_current_command != 0) { 2769 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2770 hci_stack->le_advertising_set_in_current_command = 0; 2771 if (advertising_set == NULL) break; 2772 uint8_t adv_status = packet[6]; 2773 uint8_t tx_power = packet[7]; 2774 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 }; 2775 if (adv_status == 0){ 2776 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2777 } 2778 hci_emit_event(event, sizeof(event), 1); 2779 } 2780 break; 2781 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2782 if (hci_stack->le_advertising_set_in_current_command != 0) { 2783 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2784 hci_stack->le_advertising_set_in_current_command = 0; 2785 if (advertising_set == NULL) break; 2786 uint8_t adv_status = packet[5]; 2787 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2788 if (adv_status == 0){ 2789 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2790 } 2791 hci_emit_event(event, sizeof(event), 1); 2792 } 2793 break; 2794 #endif 2795 #endif 2796 case HCI_OPCODE_HCI_READ_BD_ADDR: 2797 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2798 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)); 2799 #ifdef ENABLE_CLASSIC 2800 if (hci_stack->link_key_db){ 2801 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2802 } 2803 #endif 2804 break; 2805 #ifdef ENABLE_CLASSIC 2806 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2807 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2808 break; 2809 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2810 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2811 if (status == ERROR_CODE_SUCCESS) { 2812 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2813 } else { 2814 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2815 } 2816 break; 2817 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2818 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2819 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2820 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2821 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2822 hci_emit_event(event, sizeof(event), 1); 2823 } 2824 break; 2825 #endif 2826 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2827 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2828 2829 #ifdef ENABLE_CLASSIC 2830 // determine usable ACL packet types based on host buffer size and supported features 2831 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2832 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2833 // determine usable SCO packet types based on supported features 2834 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2835 &hci_stack->local_supported_features[0]); 2836 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2837 #endif 2838 // Classic/LE 2839 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2840 break; 2841 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2842 manufacturer = little_endian_read_16(packet, 10); 2843 // map Cypress & Infineon to Broadcom 2844 switch (manufacturer){ 2845 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2846 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2847 log_info("Treat Cypress/Infineon as Broadcom"); 2848 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2849 little_endian_store_16(packet, 10, manufacturer); 2850 break; 2851 default: 2852 break; 2853 } 2854 hci_stack->manufacturer = manufacturer; 2855 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2856 break; 2857 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2858 hci_store_local_supported_commands(packet); 2859 break; 2860 #ifdef ENABLE_CLASSIC 2861 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2862 if (packet[5]) return; 2863 hci_stack->synchronous_flow_control_enabled = 1; 2864 break; 2865 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2866 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2867 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2868 conn = hci_connection_for_handle(handle); 2869 if (conn != NULL) { 2870 uint8_t key_size = 0; 2871 if (status == 0){ 2872 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2873 log_info("Handle %04x key Size: %u", handle, key_size); 2874 } else { 2875 key_size = 1; 2876 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2877 } 2878 hci_handle_read_encryption_key_size_complete(conn, key_size); 2879 } 2880 break; 2881 // assert pairing complete event is emitted. 2882 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2883 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2884 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2885 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2886 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2887 // lookup connection by gap pairing addr 2888 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2889 if (conn == NULL) break; 2890 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2891 break; 2892 2893 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2894 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2895 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2896 uint8_t event[67]; 2897 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2898 event[1] = 65; 2899 (void)memset(&event[2], 0, 65); 2900 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2901 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2902 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2903 event[2] = 3; 2904 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2905 } else { 2906 event[2] = 1; 2907 } 2908 } 2909 hci_emit_event(event, sizeof(event), 0); 2910 break; 2911 } 2912 2913 // note: only needed if user does not provide OOB data 2914 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2915 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2916 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2917 if (conn == NULL) break; 2918 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2919 break; 2920 #endif 2921 #endif 2922 #ifdef ENABLE_BLE 2923 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2924 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2925 // lookup CIG 2926 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2927 if (cig != NULL){ 2928 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2929 uint8_t i = 0; 2930 if (status == ERROR_CODE_SUCCESS){ 2931 // assign CIS handles to pre-allocated CIS 2932 btstack_linked_list_iterator_t it; 2933 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2934 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2935 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2936 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2937 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2938 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2939 iso_stream->cis_handle = cis_handle; 2940 cig->cis_con_handles[i] = cis_handle; 2941 i++; 2942 } 2943 } 2944 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2945 hci_emit_cig_created(cig, status); 2946 } else { 2947 hci_emit_cig_created(cig, status); 2948 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2949 } 2950 } 2951 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2952 break; 2953 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2954 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2955 if (status != ERROR_CODE_SUCCESS){ 2956 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2957 } 2958 break; 2959 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2960 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2961 if (status != ERROR_CODE_SUCCESS){ 2962 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2963 } 2964 break; 2965 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2966 // lookup BIG by state 2967 btstack_linked_list_iterator_t it; 2968 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2969 while (btstack_linked_list_iterator_has_next(&it)) { 2970 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2971 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2972 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2973 if (status == ERROR_CODE_SUCCESS){ 2974 big->state_vars.next_bis++; 2975 if (big->state_vars.next_bis == big->num_bis){ 2976 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2977 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2978 } else { 2979 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2980 } 2981 } else { 2982 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2983 big->state_vars.status = status; 2984 } 2985 return; 2986 } 2987 } 2988 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2989 while (btstack_linked_list_iterator_has_next(&it)) { 2990 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2991 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2992 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2993 if (status == ERROR_CODE_SUCCESS){ 2994 big_sync->state_vars.next_bis++; 2995 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2996 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2997 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2998 } else { 2999 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3000 } 3001 } else { 3002 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3003 big_sync->state_vars.status = status; 3004 } 3005 return; 3006 } 3007 } 3008 // Lookup CIS via active group operation 3009 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3010 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3011 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3012 3013 // lookup CIS by state 3014 btstack_linked_list_iterator_t it; 3015 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3016 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3017 while (btstack_linked_list_iterator_has_next(&it)){ 3018 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3019 handle = iso_stream->cis_handle; 3020 bool emit_cis_created = false; 3021 switch (iso_stream->state){ 3022 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3023 if (status != ERROR_CODE_SUCCESS){ 3024 emit_cis_created = true; 3025 break; 3026 } 3027 if (iso_stream->max_sdu_c_to_p > 0){ 3028 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3029 } else { 3030 emit_cis_created = true; 3031 } 3032 break; 3033 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3034 emit_cis_created = true; 3035 break; 3036 default: 3037 break; 3038 } 3039 if (emit_cis_created){ 3040 hci_cis_handle_created(iso_stream, status); 3041 } 3042 } 3043 } else { 3044 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3045 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3046 if (cig != NULL) { 3047 // emit cis created if all ISO Paths have been created 3048 // assume we are central 3049 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3050 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3051 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3052 // if outgoing has been setup, or incoming was setup but outgoing not required 3053 if ((cis_direction == 1) || (outgoing_needed == false)){ 3054 // lookup iso stream by cig/cis 3055 while (btstack_linked_list_iterator_has_next(&it)) { 3056 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3057 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3058 hci_cis_handle_created(iso_stream, status); 3059 } 3060 } 3061 } 3062 // next state 3063 cig->state_vars.next_cis++; 3064 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3065 } 3066 } 3067 } 3068 break; 3069 } 3070 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3071 // lookup BIG by state 3072 btstack_linked_list_iterator_t it; 3073 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3074 while (btstack_linked_list_iterator_has_next(&it)) { 3075 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3076 uint8_t big_handle = big_sync->big_handle; 3077 switch (big_sync->state){ 3078 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3079 btstack_linked_list_iterator_remove(&it); 3080 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3081 return; 3082 default: 3083 btstack_linked_list_iterator_remove(&it); 3084 hci_emit_big_sync_stopped(big_handle); 3085 return; 3086 } 3087 } 3088 break; 3089 } 3090 #endif 3091 #endif 3092 default: 3093 break; 3094 } 3095 } 3096 3097 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3098 UNUSED(size); 3099 3100 // get num cmd packets - limit to 1 to reduce complexity 3101 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3102 3103 // get opcode and command status 3104 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3105 3106 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3107 uint8_t status = hci_event_command_status_get_status(packet); 3108 #endif 3109 3110 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3111 bd_addr_type_t addr_type; 3112 bd_addr_t addr; 3113 #endif 3114 3115 switch (opcode){ 3116 #ifdef ENABLE_CLASSIC 3117 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3118 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3119 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3120 #endif 3121 #ifdef ENABLE_LE_CENTRAL 3122 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3123 #endif 3124 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3125 addr_type = hci_stack->outgoing_addr_type; 3126 memcpy(addr, hci_stack->outgoing_addr, 6); 3127 3128 // reset outgoing address info 3129 memset(hci_stack->outgoing_addr, 0, 6); 3130 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3131 3132 // on error 3133 if (status != ERROR_CODE_SUCCESS){ 3134 #ifdef ENABLE_LE_CENTRAL 3135 if (hci_is_le_connection_type(addr_type)){ 3136 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3137 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3138 } 3139 #endif 3140 // error => outgoing connection failed 3141 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3142 if (conn != NULL){ 3143 hci_handle_connection_failed(conn, status); 3144 } 3145 } 3146 break; 3147 #endif 3148 #ifdef ENABLE_CLASSIC 3149 case HCI_OPCODE_HCI_INQUIRY: 3150 if (status == ERROR_CODE_SUCCESS) { 3151 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3152 } else { 3153 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3154 } 3155 break; 3156 #endif 3157 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3158 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3159 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3160 if (status == ERROR_CODE_SUCCESS){ 3161 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3162 } else { 3163 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3164 } 3165 break; 3166 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3167 default: 3168 break; 3169 } 3170 } 3171 3172 #ifdef ENABLE_BLE 3173 static void event_handle_le_connection_complete(const uint8_t * packet){ 3174 bd_addr_t addr; 3175 bd_addr_type_t addr_type; 3176 hci_connection_t * conn; 3177 3178 // read fields 3179 uint8_t status = packet[3]; 3180 hci_role_t role = (hci_role_t) packet[6]; 3181 3182 // support different connection complete events 3183 uint16_t conn_interval; 3184 switch (packet[2]){ 3185 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3186 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3187 break; 3188 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3189 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3190 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3191 break; 3192 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3193 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3194 break; 3195 #endif 3196 default: 3197 btstack_unreachable(); 3198 return; 3199 } 3200 3201 // Connection management 3202 reverse_bd_addr(&packet[8], addr); 3203 addr_type = (bd_addr_type_t)packet[7]; 3204 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3205 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3206 3207 #ifdef ENABLE_LE_CENTRAL 3208 // handle error: error is reported only to the initiator -> outgoing connection 3209 if (status){ 3210 3211 // handle cancelled outgoing connection 3212 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3213 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3214 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3215 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3216 // reset state 3217 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3218 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3219 // get outgoing connection conn struct for direct connect 3220 conn = gap_get_outgoing_connection(); 3221 } 3222 3223 // outgoing le connection establishment is done 3224 if (conn){ 3225 // remove entry 3226 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3227 btstack_memory_hci_connection_free( conn ); 3228 } 3229 return; 3230 } 3231 #endif 3232 3233 // on success, both hosts receive connection complete event 3234 if (role == HCI_ROLE_MASTER){ 3235 #ifdef ENABLE_LE_CENTRAL 3236 // if we're master on an le connection, it was an outgoing connection and we're done with it 3237 // note: no hci_connection_t object exists yet for connect with whitelist 3238 if (hci_is_le_connection_type(addr_type)){ 3239 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3240 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3241 } 3242 #endif 3243 } else { 3244 #ifdef ENABLE_LE_PERIPHERAL 3245 // if we're slave, it was an incoming connection, advertisements have stopped 3246 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3247 #endif 3248 } 3249 3250 // LE connections are auto-accepted, so just create a connection if there isn't one already 3251 if (!conn){ 3252 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3253 } 3254 3255 // no memory, sorry. 3256 if (!conn){ 3257 return; 3258 } 3259 3260 conn->state = OPEN; 3261 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3262 conn->le_connection_interval = conn_interval; 3263 3264 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3265 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3266 3267 #ifdef ENABLE_LE_PERIPHERAL 3268 if (role == HCI_ROLE_SLAVE){ 3269 hci_update_advertisements_enabled_for_current_roles(); 3270 } 3271 #endif 3272 3273 // init unenhanced att bearer mtu 3274 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3275 conn->att_connection.mtu_exchanged = false; 3276 3277 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3278 3279 // restart timer 3280 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3281 // btstack_run_loop_add_timer(&conn->timeout); 3282 3283 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3284 3285 hci_emit_nr_connections_changed(); 3286 } 3287 #endif 3288 3289 #ifdef ENABLE_CLASSIC 3290 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){ 3291 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3292 // LEVEL_4 is tested by l2cap 3293 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3294 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3295 if (level >= LEVEL_3){ 3296 // MITM not possible without keyboard or display 3297 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3298 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3299 3300 // MITM possible if one side has keyboard and the other has keyboard or display 3301 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3302 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3303 3304 // MITM not possible if one side has only display and other side has no keyboard 3305 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3306 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3307 } 3308 // LEVEL 2 requires SSP, which is a given 3309 return true; 3310 } 3311 3312 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3313 // get requested security level 3314 gap_security_level_t requested_security_level = conn->requested_security_level; 3315 if (hci_stack->gap_secure_connections_only_mode){ 3316 requested_security_level = LEVEL_4; 3317 } 3318 3319 // assess security: LEVEL 4 requires SC 3320 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3321 if ((requested_security_level == LEVEL_4) && 3322 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3323 !hci_remote_sc_enabled(conn)){ 3324 log_info("Level 4 required, but SC not supported -> abort"); 3325 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3326 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3327 return; 3328 } 3329 3330 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3331 // - GAP/MOD/NBON/BV-02-C 3332 // - GAP/DM/NBON/BV-01-C 3333 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3334 switch (conn->io_cap_response_auth_req){ 3335 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3336 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3337 if (hci_stack->bondable == false){ 3338 log_info("Dedicated vs. non-bondable -> abort"); 3339 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3340 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3341 return; 3342 } 3343 default: 3344 break; 3345 } 3346 } 3347 3348 // assess security based on io capabilities 3349 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3350 // responder: fully validate io caps of both sides as well as OOB data 3351 bool security_possible = false; 3352 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3353 3354 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3355 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3356 // so we merge the OOB data availability 3357 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3358 if (conn->classic_oob_c_192 != NULL){ 3359 have_oob_data |= 1; 3360 } 3361 if (conn->classic_oob_c_256 != NULL){ 3362 have_oob_data |= 2; 3363 } 3364 // for up to Level 3, either P-192 as well as P-256 will do 3365 // 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 3366 // if remote does not SC, we should not receive P-256 data either 3367 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3368 security_possible = true; 3369 } 3370 // for Level 4, P-256 is needed 3371 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3372 security_possible = true; 3373 } 3374 #endif 3375 3376 if (security_possible == false){ 3377 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3378 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3379 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3380 return; 3381 } 3382 } else { 3383 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3384 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3385 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3386 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3387 log_info("Level 3+ required, but no input/output -> abort"); 3388 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3389 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3390 return; 3391 } 3392 #endif 3393 #endif 3394 } 3395 3396 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3397 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3398 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3399 } else { 3400 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3401 } 3402 #endif 3403 } 3404 3405 #endif 3406 3407 static void event_handler(uint8_t *packet, uint16_t size){ 3408 3409 uint16_t event_length = packet[1]; 3410 3411 // assert packet is complete 3412 if (size != (event_length + 2u)){ 3413 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3414 return; 3415 } 3416 3417 hci_con_handle_t handle; 3418 hci_connection_t * conn; 3419 int i; 3420 3421 #ifdef ENABLE_CLASSIC 3422 hci_link_type_t link_type; 3423 bd_addr_t addr; 3424 bd_addr_type_t addr_type; 3425 #endif 3426 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3427 hci_iso_stream_t * iso_stream; 3428 le_audio_big_t * big; 3429 le_audio_big_sync_t * big_sync; 3430 #endif 3431 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3432 btstack_linked_list_iterator_t it; 3433 #endif 3434 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3435 uint8_t advertising_handle; 3436 #endif 3437 3438 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3439 3440 switch (hci_event_packet_get_type(packet)) { 3441 3442 case HCI_EVENT_COMMAND_COMPLETE: 3443 handle_command_complete_event(packet, size); 3444 break; 3445 3446 case HCI_EVENT_COMMAND_STATUS: 3447 handle_command_status_event(packet, size); 3448 break; 3449 3450 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3451 if (size < 3) return; 3452 uint16_t num_handles = packet[2]; 3453 if (size != (3u + num_handles * 4u)) return; 3454 #ifdef ENABLE_CLASSIC 3455 bool notify_sco = false; 3456 #endif 3457 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3458 bool notify_iso = false; 3459 #endif 3460 uint16_t offset = 3; 3461 for (i=0; i<num_handles;i++){ 3462 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3463 offset += 2u; 3464 uint16_t num_packets = little_endian_read_16(packet, offset); 3465 offset += 2u; 3466 3467 conn = hci_connection_for_handle(handle); 3468 if (conn != NULL) { 3469 3470 if (conn->num_packets_sent >= num_packets) { 3471 conn->num_packets_sent -= num_packets; 3472 } else { 3473 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3474 conn->num_packets_sent = 0; 3475 } 3476 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3477 #ifdef ENABLE_CLASSIC 3478 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3479 notify_sco = true; 3480 } 3481 #endif 3482 } 3483 3484 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3485 hci_controller_dump_packets(); 3486 #endif 3487 3488 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3489 if (conn == NULL){ 3490 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3491 if (iso_stream != NULL){ 3492 if (iso_stream->num_packets_sent >= num_packets) { 3493 iso_stream->num_packets_sent -= num_packets; 3494 } else { 3495 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3496 iso_stream->num_packets_sent = 0; 3497 } 3498 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3499 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3500 if (big != NULL){ 3501 big->num_completed_timestamp_current_valid = true; 3502 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3503 } 3504 } 3505 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3506 num_packets, handle, iso_stream->num_packets_sent); 3507 notify_iso = true; 3508 } 3509 } 3510 #endif 3511 } 3512 3513 #ifdef ENABLE_CLASSIC 3514 if (notify_sco){ 3515 hci_notify_if_sco_can_send_now(); 3516 } 3517 #endif 3518 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3519 if (notify_iso){ 3520 hci_iso_notify_can_send_now(); 3521 } 3522 #endif 3523 break; 3524 } 3525 3526 #ifdef ENABLE_CLASSIC 3527 case HCI_EVENT_FLUSH_OCCURRED: 3528 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3529 handle = hci_event_flush_occurred_get_handle(packet); 3530 conn = hci_connection_for_handle(handle); 3531 if (conn) { 3532 log_info("Flush occurred, disconnect 0x%04x", handle); 3533 conn->state = SEND_DISCONNECT; 3534 } 3535 break; 3536 3537 case HCI_EVENT_INQUIRY_COMPLETE: 3538 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3539 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3540 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3541 hci_emit_event(event, sizeof(event), 1); 3542 } 3543 break; 3544 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3545 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3546 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3547 } 3548 break; 3549 case HCI_EVENT_CONNECTION_REQUEST: 3550 reverse_bd_addr(&packet[2], addr); 3551 link_type = (hci_link_type_t) packet[11]; 3552 3553 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3554 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3555 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3556 bd_addr_copy(hci_stack->decline_addr, addr); 3557 break; 3558 } 3559 3560 if (hci_stack->gap_classic_accept_callback != NULL){ 3561 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3562 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3563 bd_addr_copy(hci_stack->decline_addr, addr); 3564 break; 3565 } 3566 } 3567 3568 // TODO: eval COD 8-10 3569 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3570 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3571 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3572 if (!conn) { 3573 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3574 } 3575 if (!conn) { 3576 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3577 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3578 bd_addr_copy(hci_stack->decline_addr, addr); 3579 hci_run(); 3580 // avoid event to higher layer 3581 return; 3582 } 3583 conn->state = RECEIVED_CONNECTION_REQUEST; 3584 // store info about eSCO 3585 if (link_type == HCI_LINK_TYPE_ESCO){ 3586 conn->remote_supported_features[0] |= 1; 3587 } 3588 hci_run(); 3589 break; 3590 3591 case HCI_EVENT_CONNECTION_COMPLETE: 3592 // Connection management 3593 reverse_bd_addr(&packet[5], addr); 3594 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3595 addr_type = BD_ADDR_TYPE_ACL; 3596 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3597 if (conn) { 3598 switch (conn->state){ 3599 // expected states 3600 case ACCEPTED_CONNECTION_REQUEST: 3601 case SENT_CREATE_CONNECTION: 3602 break; 3603 // unexpected state -> ignore 3604 default: 3605 // don't forward event to app 3606 return; 3607 } 3608 if (!packet[2]){ 3609 conn->state = OPEN; 3610 conn->con_handle = little_endian_read_16(packet, 3); 3611 3612 // trigger write supervision timeout if we're master 3613 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3614 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3615 } 3616 3617 // trigger write automatic flush timeout 3618 if (hci_stack->automatic_flush_timeout != 0){ 3619 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3620 } 3621 3622 // restart timer 3623 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3624 btstack_run_loop_add_timer(&conn->timeout); 3625 3626 // trigger remote features for dedicated bonding 3627 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3628 hci_trigger_remote_features_for_connection(conn); 3629 } 3630 3631 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3632 3633 hci_emit_nr_connections_changed(); 3634 } else { 3635 // connection failed 3636 hci_handle_connection_failed(conn, packet[2]); 3637 } 3638 } 3639 break; 3640 3641 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3642 reverse_bd_addr(&packet[5], addr); 3643 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3644 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3645 btstack_assert(conn != NULL); 3646 3647 if (packet[2] != ERROR_CODE_SUCCESS){ 3648 // connection failed, remove entry 3649 hci_handle_connection_failed(conn, packet[2]); 3650 break; 3651 } 3652 3653 conn->state = OPEN; 3654 conn->con_handle = little_endian_read_16(packet, 3); 3655 3656 #ifdef ENABLE_SCO_OVER_HCI 3657 // update SCO 3658 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3659 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3660 } 3661 // trigger can send now 3662 if (hci_have_usb_transport()){ 3663 hci_stack->sco_can_send_now = true; 3664 } 3665 #endif 3666 #ifdef HAVE_SCO_TRANSPORT 3667 // configure sco transport 3668 if (hci_stack->sco_transport != NULL){ 3669 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3670 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3671 } 3672 #endif 3673 break; 3674 3675 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3676 handle = little_endian_read_16(packet, 3); 3677 conn = hci_connection_for_handle(handle); 3678 if (!conn) break; 3679 if (!packet[2]){ 3680 const uint8_t * features = &packet[5]; 3681 hci_handle_remote_features_page_0(conn, features); 3682 3683 // read extended features if possible 3684 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3685 && ((conn->remote_supported_features[0] & 2) != 0)) { 3686 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3687 break; 3688 } 3689 } 3690 hci_handle_remote_features_received(conn); 3691 break; 3692 3693 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3694 handle = little_endian_read_16(packet, 3); 3695 conn = hci_connection_for_handle(handle); 3696 if (!conn) break; 3697 // status = ok, page = 1 3698 if (!packet[2]) { 3699 uint8_t page_number = packet[5]; 3700 uint8_t maximum_page_number = packet[6]; 3701 const uint8_t * features = &packet[7]; 3702 bool done = false; 3703 switch (page_number){ 3704 case 1: 3705 hci_handle_remote_features_page_1(conn, features); 3706 if (maximum_page_number >= 2){ 3707 // get Secure Connections (Controller) from Page 2 if available 3708 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3709 } else { 3710 // otherwise, assume SC (Controller) == SC (Host) 3711 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3712 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3713 } 3714 done = true; 3715 } 3716 break; 3717 case 2: 3718 hci_handle_remote_features_page_2(conn, features); 3719 done = true; 3720 break; 3721 default: 3722 break; 3723 } 3724 if (!done) break; 3725 } 3726 hci_handle_remote_features_received(conn); 3727 break; 3728 3729 case HCI_EVENT_LINK_KEY_REQUEST: 3730 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3731 hci_event_link_key_request_get_bd_addr(packet, addr); 3732 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3733 if (!conn) break; 3734 3735 // lookup link key in db if not cached 3736 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3737 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3738 } 3739 3740 // response sent by hci_run() 3741 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3742 #endif 3743 break; 3744 3745 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3746 hci_event_link_key_request_get_bd_addr(packet, addr); 3747 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3748 if (!conn) break; 3749 3750 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3751 3752 // CVE-2020-26555: ignore NULL link key 3753 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3754 if (btstack_is_null(&packet[8], 16)) break; 3755 3756 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3757 // Change Connection Encryption keeps link key type 3758 if (link_key_type != CHANGED_COMBINATION_KEY){ 3759 conn->link_key_type = link_key_type; 3760 } 3761 3762 // cache link key. link keys stored in little-endian format for legacy reasons 3763 memcpy(&conn->link_key, &packet[8], 16); 3764 3765 // only store link key: 3766 // - if bondable enabled 3767 if (hci_stack->bondable == false) break; 3768 // - if security level sufficient 3769 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3770 // - for SSP, also check if remote side requested bonding as well 3771 if (conn->link_key_type != COMBINATION_KEY){ 3772 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3773 if (!remote_bonding){ 3774 break; 3775 } 3776 } 3777 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3778 break; 3779 } 3780 3781 case HCI_EVENT_PIN_CODE_REQUEST: 3782 hci_event_pin_code_request_get_bd_addr(packet, addr); 3783 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3784 if (!conn) break; 3785 3786 hci_pairing_started(conn, false); 3787 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3788 if (!hci_stack->bondable ){ 3789 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3790 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3791 hci_run(); 3792 return; 3793 } 3794 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3795 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3796 log_info("Level 4 required, but SC not supported -> abort"); 3797 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3798 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3799 hci_run(); 3800 return; 3801 } 3802 break; 3803 3804 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3805 hci_event_io_capability_response_get_bd_addr(packet, addr); 3806 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3807 if (!conn) break; 3808 3809 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3810 hci_pairing_started(conn, true); 3811 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3812 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3813 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3814 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3815 #endif 3816 break; 3817 3818 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3819 hci_event_io_capability_response_get_bd_addr(packet, addr); 3820 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3821 if (!conn) break; 3822 3823 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3824 hci_connection_timestamp(conn); 3825 hci_pairing_started(conn, true); 3826 break; 3827 3828 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3829 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3830 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3831 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3832 if (!conn) break; 3833 3834 hci_connection_timestamp(conn); 3835 3836 hci_pairing_started(conn, true); 3837 3838 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3839 break; 3840 #endif 3841 3842 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3843 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3844 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3845 if (!conn) break; 3846 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3847 if (hci_stack->ssp_auto_accept){ 3848 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3849 }; 3850 } else { 3851 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3852 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3853 // don't forward event to app 3854 hci_run(); 3855 return; 3856 } 3857 break; 3858 3859 case HCI_EVENT_USER_PASSKEY_REQUEST: 3860 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3861 if (hci_stack->ssp_auto_accept){ 3862 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3863 }; 3864 break; 3865 3866 case HCI_EVENT_MODE_CHANGE: 3867 handle = hci_event_mode_change_get_handle(packet); 3868 conn = hci_connection_for_handle(handle); 3869 if (!conn) break; 3870 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3871 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3872 break; 3873 #endif 3874 3875 case HCI_EVENT_ENCRYPTION_CHANGE: 3876 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3877 handle = hci_event_encryption_change_get_connection_handle(packet); 3878 conn = hci_connection_for_handle(handle); 3879 if (!conn) break; 3880 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3881 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3882 if (encryption_enabled){ 3883 if (hci_is_le_connection(conn)){ 3884 // For LE, we accept connection as encrypted 3885 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3886 } 3887 #ifdef ENABLE_CLASSIC 3888 else { 3889 3890 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3891 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3892 bool connected_uses_aes_ccm = encryption_enabled == 2; 3893 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3894 #ifdef ENABLE_TESTING_SUPPORT 3895 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 3896 // - GAP/SEC/SEM/BI-31-C 3897 // - GAP/SEC/SEM/BI-32-C 3898 // - GAP/SEC/SEM/BI-33-C 3899 3900 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 3901 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 3902 link_key_type_t new_link_key_type; 3903 switch (conn->link_key_type){ 3904 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 3905 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3906 break; 3907 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 3908 new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3909 default: 3910 break; 3911 } 3912 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 3913 conn->link_key_type, new_link_key_type); 3914 conn->link_key_type = new_link_key_type; 3915 #else 3916 log_info("SC during pairing, but only E0 now -> abort"); 3917 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3918 break; 3919 #endif 3920 } 3921 3922 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3923 if (connected_uses_aes_ccm){ 3924 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3925 } 3926 3927 #ifdef ENABLE_TESTING_SUPPORT 3928 // work around for issue with PTS dongle 3929 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3930 #endif 3931 // validate encryption key size 3932 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3933 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3934 // already got encryption key size 3935 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3936 } else { 3937 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3938 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3939 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3940 } else { 3941 // if not, pretend everything is perfect 3942 hci_handle_read_encryption_key_size_complete(conn, 16); 3943 } 3944 } 3945 } 3946 #endif 3947 } else { 3948 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3949 } 3950 } else { 3951 uint8_t status = hci_event_encryption_change_get_status(packet); 3952 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3953 conn->bonding_flags &= ~BONDING_DEDICATED; 3954 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3955 conn->bonding_status = status; 3956 } 3957 // trigger security update -> level 0 3958 hci_handle_mutual_authentication_completed(conn); 3959 } 3960 3961 break; 3962 3963 #ifdef ENABLE_CLASSIC 3964 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3965 handle = hci_event_authentication_complete_get_connection_handle(packet); 3966 conn = hci_connection_for_handle(handle); 3967 if (!conn) break; 3968 3969 // clear authentication active flag 3970 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3971 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3972 3973 // authenticated only if auth status == 0 3974 if (hci_event_authentication_complete_get_status(packet) == 0){ 3975 // authenticated 3976 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3977 3978 // If not already encrypted, start encryption 3979 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3980 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3981 break; 3982 } 3983 } 3984 3985 // emit updated security level (will be 0 if not authenticated) 3986 hci_handle_mutual_authentication_completed(conn); 3987 break; 3988 3989 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3990 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3991 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3992 if (!conn) break; 3993 3994 // treat successfully paired connection as authenticated 3995 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3996 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3997 } 3998 3999 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4000 break; 4001 #endif 4002 4003 // HCI_EVENT_DISCONNECTION_COMPLETE 4004 // has been split, to first notify stack before shutting connection down 4005 // see end of function, too. 4006 case HCI_EVENT_DISCONNECTION_COMPLETE: 4007 if (packet[2]) break; // status != 0 4008 handle = little_endian_read_16(packet, 3); 4009 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4010 if (hci_stack->acl_fragmentation_total_size > 0u) { 4011 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4012 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4013 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4014 hci_stack->acl_fragmentation_total_size = 0; 4015 hci_stack->acl_fragmentation_pos = 0; 4016 if (release_buffer){ 4017 hci_release_packet_buffer(); 4018 } 4019 } 4020 } 4021 4022 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4023 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4024 if (hci_stack->iso_fragmentation_total_size > 0u) { 4025 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4026 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4027 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4028 hci_stack->iso_fragmentation_total_size = 0; 4029 hci_stack->iso_fragmentation_pos = 0; 4030 if (release_buffer){ 4031 hci_release_packet_buffer(); 4032 } 4033 } 4034 } 4035 4036 // finalize iso stream for CIS handle 4037 iso_stream = hci_iso_stream_for_con_handle(handle); 4038 if (iso_stream != NULL){ 4039 hci_iso_stream_finalize(iso_stream); 4040 break; 4041 } 4042 4043 // finalize iso stream(s) for ACL handle 4044 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4045 while (btstack_linked_list_iterator_has_next(&it)){ 4046 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4047 if (iso_stream->acl_handle == handle ) { 4048 hci_iso_stream_finalize(iso_stream); 4049 } 4050 } 4051 #endif 4052 4053 conn = hci_connection_for_handle(handle); 4054 if (!conn) break; 4055 #ifdef ENABLE_CLASSIC 4056 // pairing failed if it was ongoing 4057 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4058 #endif 4059 4060 // emit dedicatd bonding event 4061 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4062 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4063 } 4064 4065 // mark connection for shutdown, stop timers, reset state 4066 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4067 hci_connection_stop_timer(conn); 4068 hci_connection_init(conn); 4069 4070 #ifdef ENABLE_BLE 4071 #ifdef ENABLE_LE_PERIPHERAL 4072 // re-enable advertisements for le connections if active 4073 if (hci_is_le_connection(conn)){ 4074 hci_update_advertisements_enabled_for_current_roles(); 4075 } 4076 #endif 4077 #endif 4078 break; 4079 4080 case HCI_EVENT_HARDWARE_ERROR: 4081 log_error("Hardware Error: 0x%02x", packet[2]); 4082 if (hci_stack->hardware_error_callback){ 4083 (*hci_stack->hardware_error_callback)(packet[2]); 4084 } else { 4085 // if no special requests, just reboot stack 4086 hci_power_control_off(); 4087 hci_power_control_on(); 4088 } 4089 break; 4090 4091 #ifdef ENABLE_CLASSIC 4092 case HCI_EVENT_ROLE_CHANGE: 4093 if (packet[2]) break; // status != 0 4094 reverse_bd_addr(&packet[3], addr); 4095 addr_type = BD_ADDR_TYPE_ACL; 4096 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4097 if (!conn) break; 4098 conn->role = (hci_role_t) packet[9]; 4099 break; 4100 #endif 4101 4102 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4103 // release packet buffer only for asynchronous transport and if there are not further fragments 4104 if (hci_transport_synchronous()) { 4105 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4106 return; // instead of break: to avoid re-entering hci_run() 4107 } 4108 hci_stack->acl_fragmentation_tx_active = 0; 4109 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4110 hci_stack->iso_fragmentation_tx_active = 0; 4111 if (hci_stack->iso_fragmentation_total_size) break; 4112 #endif 4113 if (hci_stack->acl_fragmentation_total_size) break; 4114 hci_release_packet_buffer(); 4115 4116 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4117 hci_iso_notify_can_send_now(); 4118 #endif 4119 // L2CAP receives this event via the hci_emit_event below 4120 4121 #ifdef ENABLE_CLASSIC 4122 // For SCO, we do the can_send_now_check here 4123 hci_notify_if_sco_can_send_now(); 4124 #endif 4125 break; 4126 4127 #ifdef ENABLE_CLASSIC 4128 case HCI_EVENT_SCO_CAN_SEND_NOW: 4129 // For SCO, we do the can_send_now_check here 4130 hci_stack->sco_can_send_now = true; 4131 hci_notify_if_sco_can_send_now(); 4132 return; 4133 4134 // explode inquriy results for easier consumption 4135 case HCI_EVENT_INQUIRY_RESULT: 4136 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4137 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4138 gap_inquiry_explode(packet, size); 4139 break; 4140 #endif 4141 4142 #ifdef ENABLE_BLE 4143 case HCI_EVENT_LE_META: 4144 switch (packet[2]){ 4145 #ifdef ENABLE_LE_CENTRAL 4146 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4147 if (!hci_stack->le_scanning_enabled) break; 4148 le_handle_advertisement_report(packet, size); 4149 break; 4150 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4151 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4152 if (!hci_stack->le_scanning_enabled) break; 4153 le_handle_extended_advertisement_report(packet, size); 4154 break; 4155 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4156 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4157 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4158 break; 4159 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4160 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4161 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4162 while (btstack_linked_list_iterator_has_next(&it)) { 4163 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4164 if (advertising_set->advertising_handle == advertising_handle){ 4165 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4166 } 4167 } 4168 break; 4169 #endif 4170 #endif 4171 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4172 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4173 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4174 event_handle_le_connection_complete(packet); 4175 break; 4176 4177 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4178 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4179 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4180 conn = hci_connection_for_handle(handle); 4181 if (!conn) break; 4182 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4183 break; 4184 4185 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4186 // connection 4187 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4188 conn = hci_connection_for_handle(handle); 4189 if (conn) { 4190 // read arguments 4191 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4192 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4193 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4194 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4195 4196 // validate against current connection parameter range 4197 le_connection_parameter_range_t existing_range; 4198 gap_get_connection_parameter_range(&existing_range); 4199 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4200 if (update_parameter){ 4201 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4202 conn->le_conn_interval_min = le_conn_interval_min; 4203 conn->le_conn_interval_max = le_conn_interval_max; 4204 conn->le_conn_latency = le_conn_latency; 4205 conn->le_supervision_timeout = le_supervision_timeout; 4206 } else { 4207 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4208 } 4209 } 4210 break; 4211 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4212 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4213 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4214 conn = hci_connection_for_handle(handle); 4215 if (conn) { 4216 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4217 } 4218 break; 4219 #endif 4220 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4221 case HCI_SUBEVENT_LE_CIS_REQUEST: 4222 // incoming CIS request, allocate iso stream object and cache metadata 4223 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4224 hci_subevent_le_cis_request_get_cig_id(packet), 4225 hci_subevent_le_cis_request_get_cis_id(packet)); 4226 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4227 if (iso_stream != NULL){ 4228 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4229 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4230 } 4231 break; 4232 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4233 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4234 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4235 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4236 iso_stream = hci_iso_stream_for_con_handle(handle); 4237 btstack_assert(iso_stream != NULL); 4238 // track SDU 4239 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4240 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4241 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4242 // CIS Accept by Peripheral 4243 if (status == ERROR_CODE_SUCCESS){ 4244 if (iso_stream->max_sdu_p_to_c > 0){ 4245 // we're peripheral and we will send data 4246 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4247 } else { 4248 // we're peripheral and we will only receive data 4249 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4250 } 4251 } else { 4252 hci_cis_handle_created(iso_stream, status); 4253 } 4254 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4255 } else { 4256 // CIG Setup by Central 4257 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4258 btstack_assert(cig != NULL); 4259 // update iso stream state 4260 if (status == ERROR_CODE_SUCCESS){ 4261 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4262 } else { 4263 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4264 } 4265 // update cig state 4266 uint8_t i; 4267 for (i=0;i<cig->num_cis;i++){ 4268 if (cig->cis_con_handles[i] == handle){ 4269 cig->cis_setup_active[i] = false; 4270 if (status == ERROR_CODE_SUCCESS){ 4271 cig->cis_established[i] = true; 4272 } else { 4273 hci_cis_handle_created(iso_stream, status); 4274 } 4275 } 4276 } 4277 4278 // trigger iso path setup if complete 4279 bool cis_setup_active = false; 4280 for (i=0;i<cig->num_cis;i++){ 4281 cis_setup_active |= cig->cis_setup_active[i]; 4282 } 4283 if (cis_setup_active == false){ 4284 cig->state_vars.next_cis = 0; 4285 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4286 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4287 } 4288 } 4289 } 4290 break; 4291 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4292 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4293 big = hci_big_for_handle(packet[4]); 4294 if (big != NULL){ 4295 uint8_t status = packet[3]; 4296 if (status == ERROR_CODE_SUCCESS){ 4297 // store bis_con_handles and trigger iso path setup 4298 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4299 uint8_t i; 4300 for (i=0;i<num_bis;i++){ 4301 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4302 big->bis_con_handles[i] = bis_handle; 4303 // assign bis handle 4304 btstack_linked_list_iterator_t it; 4305 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4306 while (btstack_linked_list_iterator_has_next(&it)){ 4307 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4308 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4309 (iso_stream->group_id == big->big_handle)){ 4310 iso_stream->cis_handle = bis_handle; 4311 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4312 break; 4313 } 4314 } 4315 } 4316 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4317 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4318 big->state_vars.next_bis = 0; 4319 } 4320 } else { 4321 // create BIG failed or has been stopped by us 4322 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4323 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4324 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4325 hci_emit_big_created(big, status); 4326 } else { 4327 hci_emit_big_terminated(big); 4328 } 4329 } 4330 } 4331 break; 4332 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4333 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4334 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4335 if (big != NULL){ 4336 // finalize associated ISO streams 4337 btstack_linked_list_iterator_t it; 4338 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4339 while (btstack_linked_list_iterator_has_next(&it)){ 4340 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4341 if (iso_stream->group_id == big->big_handle){ 4342 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4343 btstack_linked_list_iterator_remove(&it); 4344 btstack_memory_hci_iso_stream_free(iso_stream); 4345 } 4346 } 4347 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4348 switch (big->state){ 4349 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4350 hci_emit_big_created(big, big->state_vars.status); 4351 break; 4352 default: 4353 hci_emit_big_terminated(big); 4354 break; 4355 } 4356 } 4357 break; 4358 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4359 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4360 big_sync = hci_big_sync_for_handle(packet[4]); 4361 if (big_sync != NULL){ 4362 uint8_t status = packet[3]; 4363 uint8_t big_handle = packet[4]; 4364 if (status == ERROR_CODE_SUCCESS){ 4365 // store bis_con_handles and trigger iso path setup 4366 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4367 uint8_t i; 4368 for (i=0;i<num_bis;i++){ 4369 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4370 } 4371 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4372 // trigger iso path setup 4373 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4374 big_sync->state_vars.next_bis = 0; 4375 } 4376 } else { 4377 // create BIG Sync failed or has been stopped by us 4378 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4379 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4380 hci_emit_big_sync_created(big_sync, status); 4381 } else { 4382 hci_emit_big_sync_stopped(big_handle); 4383 } 4384 } 4385 } 4386 break; 4387 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4388 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4389 big_sync = hci_big_sync_for_handle(packet[4]); 4390 if (big_sync != NULL){ 4391 uint8_t big_handle = packet[4]; 4392 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4393 hci_emit_big_sync_stopped(big_handle); 4394 } 4395 break; 4396 #endif 4397 default: 4398 break; 4399 } 4400 break; 4401 #endif 4402 case HCI_EVENT_VENDOR_SPECIFIC: 4403 // Vendor specific commands often create vendor specific event instead of num completed packets 4404 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4405 switch (hci_stack->manufacturer){ 4406 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4407 hci_stack->num_cmd_packets = 1; 4408 break; 4409 default: 4410 break; 4411 } 4412 break; 4413 default: 4414 break; 4415 } 4416 4417 handle_event_for_current_stack_state(packet, size); 4418 4419 // notify upper stack 4420 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4421 4422 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4423 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4424 handle = little_endian_read_16(packet, 3); 4425 hci_connection_t * aConn = hci_connection_for_handle(handle); 4426 // discard connection if app did not trigger a reconnect in the event handler 4427 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4428 hci_shutdown_connection(aConn); 4429 } 4430 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4431 hci_controller_dump_packets(); 4432 #endif 4433 } 4434 4435 // execute main loop 4436 hci_run(); 4437 } 4438 4439 #ifdef ENABLE_CLASSIC 4440 4441 #ifdef ENABLE_SCO_OVER_HCI 4442 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4443 static void sco_schedule_tx(hci_connection_t * conn); 4444 4445 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4446 log_debug("SCO TX Timeout"); 4447 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4448 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4449 if (!conn) return; 4450 4451 // trigger send 4452 conn->sco_tx_ready = 1; 4453 // extra packet if CVSD but SCO buffer is too short 4454 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4455 conn->sco_tx_ready++; 4456 } 4457 hci_notify_if_sco_can_send_now(); 4458 } 4459 4460 4461 #define SCO_TX_AFTER_RX_MS (6) 4462 4463 static void sco_schedule_tx(hci_connection_t * conn){ 4464 4465 uint32_t now = btstack_run_loop_get_time_ms(); 4466 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4467 int time_delta_ms = sco_tx_ms - now; 4468 4469 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4470 4471 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4472 btstack_run_loop_remove_timer(timer); 4473 btstack_run_loop_set_timer(timer, time_delta_ms); 4474 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4475 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4476 btstack_run_loop_add_timer(timer); 4477 } 4478 #endif 4479 4480 static void sco_handler(uint8_t * packet, uint16_t size){ 4481 // lookup connection struct 4482 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4483 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4484 if (!conn) return; 4485 4486 #ifdef ENABLE_SCO_OVER_HCI 4487 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4488 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4489 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4490 packet[2] = 0x3c; 4491 memmove(&packet[3], &packet[23], 63); 4492 size = 63; 4493 } 4494 } 4495 4496 if (hci_have_usb_transport()){ 4497 // Nothing to do 4498 } else { 4499 // 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); 4500 if (hci_stack->synchronous_flow_control_enabled == 0){ 4501 uint32_t now = btstack_run_loop_get_time_ms(); 4502 4503 if (!conn->sco_rx_valid){ 4504 // ignore first 10 packets 4505 conn->sco_rx_count++; 4506 // log_debug("sco rx count %u", conn->sco_rx_count); 4507 if (conn->sco_rx_count == 10) { 4508 // use first timestamp as is and pretent it just started 4509 conn->sco_rx_ms = now; 4510 conn->sco_rx_valid = 1; 4511 conn->sco_rx_count = 0; 4512 sco_schedule_tx(conn); 4513 } 4514 } else { 4515 // track expected arrival timme 4516 conn->sco_rx_count++; 4517 conn->sco_rx_ms += 7; 4518 int delta = (int32_t) (now - conn->sco_rx_ms); 4519 if (delta > 0){ 4520 conn->sco_rx_ms++; 4521 } 4522 // log_debug("sco rx %u", conn->sco_rx_ms); 4523 sco_schedule_tx(conn); 4524 } 4525 } 4526 } 4527 #endif 4528 4529 // deliver to app 4530 if (hci_stack->sco_packet_handler) { 4531 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4532 } 4533 4534 #ifdef HAVE_SCO_TRANSPORT 4535 // We can send one packet for each received packet 4536 conn->sco_tx_ready++; 4537 hci_notify_if_sco_can_send_now(); 4538 #endif 4539 4540 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4541 conn->num_packets_completed++; 4542 hci_stack->host_completed_packets = 1; 4543 hci_run(); 4544 #endif 4545 } 4546 #endif 4547 4548 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4549 hci_dump_packet(packet_type, 1, packet, size); 4550 switch (packet_type) { 4551 case HCI_EVENT_PACKET: 4552 event_handler(packet, size); 4553 break; 4554 case HCI_ACL_DATA_PACKET: 4555 acl_handler(packet, size); 4556 break; 4557 #ifdef ENABLE_CLASSIC 4558 case HCI_SCO_DATA_PACKET: 4559 sco_handler(packet, size); 4560 break; 4561 #endif 4562 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4563 case HCI_ISO_DATA_PACKET: 4564 hci_iso_packet_handler(packet, size); 4565 break; 4566 #endif 4567 default: 4568 break; 4569 } 4570 } 4571 4572 /** 4573 * @brief Add event packet handler. 4574 */ 4575 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4576 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4577 } 4578 4579 /** 4580 * @brief Remove event packet handler. 4581 */ 4582 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4583 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4584 } 4585 4586 /** Register HCI packet handlers */ 4587 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4588 hci_stack->acl_packet_handler = handler; 4589 } 4590 4591 #ifdef ENABLE_CLASSIC 4592 /** 4593 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4594 */ 4595 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4596 hci_stack->sco_packet_handler = handler; 4597 } 4598 #endif 4599 4600 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4601 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4602 hci_stack->iso_packet_handler = handler; 4603 } 4604 #endif 4605 4606 static void hci_state_reset(void){ 4607 // no connections yet 4608 hci_stack->connections = NULL; 4609 4610 // keep discoverable/connectable as this has been requested by the client(s) 4611 // hci_stack->discoverable = 0; 4612 // hci_stack->connectable = 0; 4613 // hci_stack->bondable = 1; 4614 // hci_stack->own_addr_type = 0; 4615 4616 // buffer is free 4617 hci_stack->hci_packet_buffer_reserved = false; 4618 4619 // no pending cmds 4620 hci_stack->decline_reason = 0; 4621 4622 hci_stack->secure_connections_active = false; 4623 4624 #ifdef ENABLE_CLASSIC 4625 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4626 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4627 4628 hci_stack->gap_tasks_classic = 4629 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4630 GAP_TASK_SET_CLASS_OF_DEVICE | 4631 GAP_TASK_SET_LOCAL_NAME | 4632 GAP_TASK_SET_EIR_DATA | 4633 GAP_TASK_WRITE_SCAN_ENABLE | 4634 GAP_TASK_WRITE_PAGE_TIMEOUT; 4635 #endif 4636 4637 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4638 hci_stack->classic_read_local_oob_data = false; 4639 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4640 #endif 4641 4642 // LE 4643 #ifdef ENABLE_BLE 4644 memset(hci_stack->le_random_address, 0, 6); 4645 hci_stack->le_random_address_set = 0; 4646 #endif 4647 #ifdef ENABLE_LE_CENTRAL 4648 hci_stack->le_scanning_active = false; 4649 hci_stack->le_scanning_param_update = true; 4650 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4651 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4652 hci_stack->le_whitelist_capacity = 0; 4653 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4654 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4655 #endif 4656 #endif 4657 #ifdef ENABLE_LE_PERIPHERAL 4658 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4659 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4660 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4661 } 4662 if (hci_stack->le_advertisements_data != NULL){ 4663 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4664 } 4665 #endif 4666 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4667 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4668 #endif 4669 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4670 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4671 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4672 #endif 4673 } 4674 4675 #ifdef ENABLE_CLASSIC 4676 /** 4677 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4678 */ 4679 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4680 // store and open remote device db 4681 hci_stack->link_key_db = link_key_db; 4682 if (hci_stack->link_key_db) { 4683 hci_stack->link_key_db->open(); 4684 } 4685 } 4686 #endif 4687 4688 void hci_init(const hci_transport_t *transport, const void *config){ 4689 4690 #ifdef HAVE_MALLOC 4691 if (!hci_stack) { 4692 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4693 } 4694 #else 4695 hci_stack = &hci_stack_static; 4696 #endif 4697 memset(hci_stack, 0, sizeof(hci_stack_t)); 4698 4699 // reference to use transport layer implementation 4700 hci_stack->hci_transport = transport; 4701 4702 // reference to used config 4703 hci_stack->config = config; 4704 4705 // setup pointer for outgoing packet buffer 4706 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4707 4708 // max acl payload size defined in config.h 4709 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4710 4711 // register packet handlers with transport 4712 transport->register_packet_handler(&packet_handler); 4713 4714 hci_stack->state = HCI_STATE_OFF; 4715 4716 // class of device 4717 hci_stack->class_of_device = 0x007a020c; // Smartphone 4718 4719 // bondable by default 4720 hci_stack->bondable = 1; 4721 4722 #ifdef ENABLE_CLASSIC 4723 // classic name 4724 hci_stack->local_name = default_classic_name; 4725 4726 // Master slave policy 4727 hci_stack->master_slave_policy = 1; 4728 4729 // Allow Role Switch 4730 hci_stack->allow_role_switch = 1; 4731 4732 // Default / minimum security level = 2 4733 hci_stack->gap_security_level = LEVEL_2; 4734 4735 // Default Security Mode 4 4736 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4737 4738 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4739 hci_stack->gap_required_encyrption_key_size = 7; 4740 4741 // Link Supervision Timeout 4742 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4743 4744 #endif 4745 4746 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4747 hci_stack->ssp_enable = 1; 4748 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4749 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4750 hci_stack->ssp_auto_accept = 1; 4751 4752 // Secure Connections: enable (requires support from Controller) 4753 hci_stack->secure_connections_enable = true; 4754 4755 // voice setting - signed 16 bit pcm data with CVSD over the air 4756 hci_stack->sco_voice_setting = 0x60; 4757 4758 #ifdef ENABLE_BLE 4759 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4760 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4761 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4762 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4763 hci_stack->le_connection_latency = 4; // 4 4764 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4765 hci_stack->le_minimum_ce_length = 0; // 0 ms 4766 hci_stack->le_maximum_ce_length = 0; // 0 ms 4767 #endif 4768 4769 #ifdef ENABLE_LE_CENTRAL 4770 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4771 4772 // default LE Scanning 4773 hci_stack->le_scan_type = 0x01; // active 4774 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4775 hci_stack->le_scan_window = 0x30; // 30 ms 4776 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4777 #endif 4778 4779 #ifdef ENABLE_LE_PERIPHERAL 4780 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4781 4782 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4783 hci_stack->le_advertisements_interval_min = 0x0800; 4784 hci_stack->le_advertisements_interval_max = 0x0800; 4785 hci_stack->le_advertisements_type = 0; 4786 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4787 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4788 hci_stack->le_advertisements_channel_map = 0x07; 4789 hci_stack->le_advertisements_filter_policy = 0; 4790 #endif 4791 4792 // connection parameter range used to answer connection parameter update requests in l2cap 4793 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4794 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4795 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4796 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4797 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4798 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4799 4800 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4801 hci_stack->iso_packets_to_queue = 1; 4802 #endif 4803 4804 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4805 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4806 #endif 4807 4808 hci_state_reset(); 4809 } 4810 4811 void hci_deinit(void){ 4812 btstack_run_loop_remove_timer(&hci_stack->timeout); 4813 #ifdef HAVE_MALLOC 4814 if (hci_stack) { 4815 free(hci_stack); 4816 } 4817 #endif 4818 hci_stack = NULL; 4819 4820 #ifdef ENABLE_CLASSIC 4821 disable_l2cap_timeouts = 0; 4822 #endif 4823 } 4824 4825 /** 4826 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4827 */ 4828 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4829 hci_stack->chipset = chipset_driver; 4830 4831 // reset chipset driver - init is also called on power_up 4832 if (hci_stack->chipset && hci_stack->chipset->init){ 4833 hci_stack->chipset->init(hci_stack->config); 4834 } 4835 } 4836 4837 void hci_enable_custom_pre_init(void){ 4838 hci_stack->chipset_pre_init = true; 4839 } 4840 4841 /** 4842 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4843 */ 4844 void hci_set_control(const btstack_control_t *hardware_control){ 4845 // references to used control implementation 4846 hci_stack->control = hardware_control; 4847 // init with transport config 4848 hardware_control->init(hci_stack->config); 4849 } 4850 4851 static void hci_discard_connections(void){ 4852 btstack_linked_list_iterator_t it; 4853 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4854 while (btstack_linked_list_iterator_has_next(&it)){ 4855 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4856 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4857 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4858 hci_shutdown_connection(connection); 4859 } 4860 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4861 while (hci_stack->iso_streams != NULL){ 4862 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4863 } 4864 #endif 4865 } 4866 4867 void hci_close(void){ 4868 4869 #ifdef ENABLE_CLASSIC 4870 // close remote device db 4871 if (hci_stack->link_key_db) { 4872 hci_stack->link_key_db->close(); 4873 } 4874 #endif 4875 4876 hci_discard_connections(); 4877 4878 hci_power_control(HCI_POWER_OFF); 4879 4880 #ifdef HAVE_MALLOC 4881 free(hci_stack); 4882 #endif 4883 hci_stack = NULL; 4884 } 4885 4886 #ifdef HAVE_SCO_TRANSPORT 4887 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4888 hci_stack->sco_transport = sco_transport; 4889 sco_transport->register_packet_handler(&packet_handler); 4890 } 4891 #endif 4892 4893 #ifdef ENABLE_CLASSIC 4894 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4895 // validate ranage and set 4896 if (encryption_key_size < 7) return; 4897 if (encryption_key_size > 16) return; 4898 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4899 } 4900 4901 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4902 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4903 hci_stack->gap_security_mode = security_mode; 4904 return ERROR_CODE_SUCCESS; 4905 } else { 4906 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4907 } 4908 } 4909 4910 gap_security_mode_t gap_get_security_mode(void){ 4911 return hci_stack->gap_security_mode; 4912 } 4913 4914 void gap_set_security_level(gap_security_level_t security_level){ 4915 hci_stack->gap_security_level = security_level; 4916 } 4917 4918 gap_security_level_t gap_get_security_level(void){ 4919 if (hci_stack->gap_secure_connections_only_mode){ 4920 return LEVEL_4; 4921 } 4922 return hci_stack->gap_security_level; 4923 } 4924 4925 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4926 hci_stack->gap_minimal_service_security_level = security_level; 4927 } 4928 4929 void gap_set_secure_connections_only_mode(bool enable){ 4930 hci_stack->gap_secure_connections_only_mode = enable; 4931 } 4932 4933 bool gap_get_secure_connections_only_mode(void){ 4934 return hci_stack->gap_secure_connections_only_mode; 4935 } 4936 #endif 4937 4938 #ifdef ENABLE_CLASSIC 4939 void gap_set_class_of_device(uint32_t class_of_device){ 4940 hci_stack->class_of_device = class_of_device; 4941 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4942 hci_run(); 4943 } 4944 4945 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4946 hci_stack->default_link_policy_settings = default_link_policy_settings; 4947 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4948 hci_run(); 4949 } 4950 4951 void gap_set_allow_role_switch(bool allow_role_switch){ 4952 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4953 } 4954 4955 uint8_t hci_get_allow_role_switch(void){ 4956 return hci_stack->allow_role_switch; 4957 } 4958 4959 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4960 hci_stack->link_supervision_timeout = link_supervision_timeout; 4961 } 4962 4963 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4964 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4965 } 4966 4967 uint16_t hci_automatic_flush_timeout(void){ 4968 return hci_stack->automatic_flush_timeout; 4969 } 4970 4971 void hci_disable_l2cap_timeout_check(void){ 4972 disable_l2cap_timeouts = 1; 4973 } 4974 #endif 4975 4976 #ifndef HAVE_HOST_CONTROLLER_API 4977 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4978 void hci_set_bd_addr(bd_addr_t addr){ 4979 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4980 hci_stack->custom_bd_addr_set = 1; 4981 } 4982 #endif 4983 4984 // State-Module-Driver overview 4985 // state module low-level 4986 // HCI_STATE_OFF off close 4987 // HCI_STATE_INITIALIZING, on open 4988 // HCI_STATE_WORKING, on open 4989 // HCI_STATE_HALTING, on open 4990 // HCI_STATE_SLEEPING, off/sleep close 4991 // HCI_STATE_FALLING_ASLEEP on open 4992 4993 static int hci_power_control_on(void){ 4994 4995 // power on 4996 int err = 0; 4997 if (hci_stack->control && hci_stack->control->on){ 4998 err = (*hci_stack->control->on)(); 4999 } 5000 if (err){ 5001 log_error( "POWER_ON failed"); 5002 hci_emit_hci_open_failed(); 5003 return err; 5004 } 5005 5006 // int chipset driver 5007 if (hci_stack->chipset && hci_stack->chipset->init){ 5008 hci_stack->chipset->init(hci_stack->config); 5009 } 5010 5011 // init transport 5012 if (hci_stack->hci_transport->init){ 5013 hci_stack->hci_transport->init(hci_stack->config); 5014 } 5015 5016 // open transport 5017 err = hci_stack->hci_transport->open(); 5018 if (err){ 5019 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5020 if (hci_stack->control && hci_stack->control->off){ 5021 (*hci_stack->control->off)(); 5022 } 5023 hci_emit_hci_open_failed(); 5024 return err; 5025 } 5026 return 0; 5027 } 5028 5029 static void hci_power_control_off(void){ 5030 5031 log_info("hci_power_control_off"); 5032 5033 // close low-level device 5034 hci_stack->hci_transport->close(); 5035 5036 log_info("hci_power_control_off - hci_transport closed"); 5037 5038 // power off 5039 if (hci_stack->control && hci_stack->control->off){ 5040 (*hci_stack->control->off)(); 5041 } 5042 5043 log_info("hci_power_control_off - control closed"); 5044 5045 hci_stack->state = HCI_STATE_OFF; 5046 } 5047 5048 static void hci_power_control_sleep(void){ 5049 5050 log_info("hci_power_control_sleep"); 5051 5052 #if 0 5053 // don't close serial port during sleep 5054 5055 // close low-level device 5056 hci_stack->hci_transport->close(hci_stack->config); 5057 #endif 5058 5059 // sleep mode 5060 if (hci_stack->control && hci_stack->control->sleep){ 5061 (*hci_stack->control->sleep)(); 5062 } 5063 5064 hci_stack->state = HCI_STATE_SLEEPING; 5065 } 5066 5067 static int hci_power_control_wake(void){ 5068 5069 log_info("hci_power_control_wake"); 5070 5071 // wake on 5072 if (hci_stack->control && hci_stack->control->wake){ 5073 (*hci_stack->control->wake)(); 5074 } 5075 5076 #if 0 5077 // open low-level device 5078 int err = hci_stack->hci_transport->open(hci_stack->config); 5079 if (err){ 5080 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5081 if (hci_stack->control && hci_stack->control->off){ 5082 (*hci_stack->control->off)(); 5083 } 5084 hci_emit_hci_open_failed(); 5085 return err; 5086 } 5087 #endif 5088 5089 return 0; 5090 } 5091 5092 static void hci_power_enter_initializing_state(void){ 5093 // set up state machine 5094 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5095 hci_stack->hci_packet_buffer_reserved = false; 5096 hci_stack->state = HCI_STATE_INITIALIZING; 5097 5098 #ifndef HAVE_HOST_CONTROLLER_API 5099 if (hci_stack->chipset_pre_init) { 5100 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5101 } else 5102 #endif 5103 { 5104 hci_stack->substate = HCI_INIT_SEND_RESET; 5105 } 5106 } 5107 5108 static void hci_power_enter_halting_state(void){ 5109 #ifdef ENABLE_BLE 5110 // drop entries scheduled for removal, mark others for re-adding 5111 btstack_linked_list_iterator_t it; 5112 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5113 while (btstack_linked_list_iterator_has_next(&it)){ 5114 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5115 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5116 btstack_linked_list_iterator_remove(&it); 5117 btstack_memory_whitelist_entry_free(entry); 5118 } else { 5119 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5120 } 5121 } 5122 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5123 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5124 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5125 while (btstack_linked_list_iterator_has_next(&it)){ 5126 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5127 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5128 btstack_linked_list_iterator_remove(&it); 5129 btstack_memory_periodic_advertiser_list_entry_free(entry); 5130 } else { 5131 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5132 continue; 5133 } 5134 } 5135 #endif 5136 #endif 5137 // see hci_run 5138 hci_stack->state = HCI_STATE_HALTING; 5139 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5140 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5141 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5142 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5143 btstack_run_loop_add_timer(&hci_stack->timeout); 5144 } 5145 5146 // returns error 5147 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5148 int err; 5149 switch (power_mode){ 5150 case HCI_POWER_ON: 5151 err = hci_power_control_on(); 5152 if (err != 0) { 5153 log_error("hci_power_control_on() error %d", err); 5154 return err; 5155 } 5156 hci_power_enter_initializing_state(); 5157 break; 5158 case HCI_POWER_OFF: 5159 // do nothing 5160 break; 5161 case HCI_POWER_SLEEP: 5162 // do nothing (with SLEEP == OFF) 5163 break; 5164 default: 5165 btstack_assert(false); 5166 break; 5167 } 5168 return ERROR_CODE_SUCCESS; 5169 } 5170 5171 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5172 switch (power_mode){ 5173 case HCI_POWER_ON: 5174 // do nothing 5175 break; 5176 case HCI_POWER_OFF: 5177 // no connections yet, just turn it off 5178 hci_power_control_off(); 5179 break; 5180 case HCI_POWER_SLEEP: 5181 // no connections yet, just turn it off 5182 hci_power_control_sleep(); 5183 break; 5184 default: 5185 btstack_assert(false); 5186 break; 5187 } 5188 return ERROR_CODE_SUCCESS; 5189 } 5190 5191 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5192 switch (power_mode){ 5193 case HCI_POWER_ON: 5194 // do nothing 5195 break; 5196 case HCI_POWER_OFF: 5197 hci_power_enter_halting_state(); 5198 break; 5199 case HCI_POWER_SLEEP: 5200 // see hci_run 5201 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5202 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5203 break; 5204 default: 5205 btstack_assert(false); 5206 break; 5207 } 5208 return ERROR_CODE_SUCCESS; 5209 } 5210 5211 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5212 switch (power_mode){ 5213 case HCI_POWER_ON: 5214 hci_power_enter_initializing_state(); 5215 break; 5216 case HCI_POWER_OFF: 5217 // do nothing 5218 break; 5219 case HCI_POWER_SLEEP: 5220 // see hci_run 5221 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5222 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5223 break; 5224 default: 5225 btstack_assert(false); 5226 break; 5227 } 5228 return ERROR_CODE_SUCCESS; 5229 } 5230 5231 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5232 switch (power_mode){ 5233 case HCI_POWER_ON: 5234 hci_power_enter_initializing_state(); 5235 break; 5236 case HCI_POWER_OFF: 5237 hci_power_enter_halting_state(); 5238 break; 5239 case HCI_POWER_SLEEP: 5240 // do nothing 5241 break; 5242 default: 5243 btstack_assert(false); 5244 break; 5245 } 5246 return ERROR_CODE_SUCCESS; 5247 } 5248 5249 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5250 int err; 5251 switch (power_mode){ 5252 case HCI_POWER_ON: 5253 err = hci_power_control_wake(); 5254 if (err) return err; 5255 hci_power_enter_initializing_state(); 5256 break; 5257 case HCI_POWER_OFF: 5258 hci_power_enter_halting_state(); 5259 break; 5260 case HCI_POWER_SLEEP: 5261 // do nothing 5262 break; 5263 default: 5264 btstack_assert(false); 5265 break; 5266 } 5267 return ERROR_CODE_SUCCESS; 5268 } 5269 5270 int hci_power_control(HCI_POWER_MODE power_mode){ 5271 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5272 btstack_run_loop_remove_timer(&hci_stack->timeout); 5273 int err = 0; 5274 switch (hci_stack->state){ 5275 case HCI_STATE_OFF: 5276 err = hci_power_control_state_off(power_mode); 5277 break; 5278 case HCI_STATE_INITIALIZING: 5279 err = hci_power_control_state_initializing(power_mode); 5280 break; 5281 case HCI_STATE_WORKING: 5282 err = hci_power_control_state_working(power_mode); 5283 break; 5284 case HCI_STATE_HALTING: 5285 err = hci_power_control_state_halting(power_mode); 5286 break; 5287 case HCI_STATE_FALLING_ASLEEP: 5288 err = hci_power_control_state_falling_asleep(power_mode); 5289 break; 5290 case HCI_STATE_SLEEPING: 5291 err = hci_power_control_state_sleeping(power_mode); 5292 break; 5293 default: 5294 btstack_assert(false); 5295 break; 5296 } 5297 if (err != 0){ 5298 return err; 5299 } 5300 5301 // create internal event 5302 hci_emit_state(); 5303 5304 // trigger next/first action 5305 hci_run(); 5306 5307 return 0; 5308 } 5309 5310 5311 static void hci_halting_run(void) { 5312 5313 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5314 5315 hci_connection_t *connection; 5316 #ifdef ENABLE_BLE 5317 #ifdef ENABLE_LE_PERIPHERAL 5318 bool stop_advertismenets; 5319 #endif 5320 #endif 5321 5322 switch (hci_stack->substate) { 5323 case HCI_HALTING_CLASSIC_STOP: 5324 #ifdef ENABLE_CLASSIC 5325 if (!hci_can_send_command_packet_now()) return; 5326 5327 if (hci_stack->connectable || hci_stack->discoverable){ 5328 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5329 hci_send_cmd(&hci_write_scan_enable, 0); 5330 return; 5331 } 5332 #endif 5333 /* fall through */ 5334 5335 case HCI_HALTING_LE_ADV_STOP: 5336 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5337 5338 #ifdef ENABLE_BLE 5339 #ifdef ENABLE_LE_PERIPHERAL 5340 if (!hci_can_send_command_packet_now()) return; 5341 5342 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5343 5344 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5345 if (hci_extended_advertising_supported()){ 5346 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5347 btstack_linked_list_iterator_t it; 5348 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5349 // stop all periodic advertisements and check if an extended set is active 5350 while (btstack_linked_list_iterator_has_next(&it)){ 5351 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5352 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5353 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5354 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5355 return; 5356 } 5357 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5358 stop_advertismenets = true; 5359 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5360 } 5361 } 5362 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5363 if (stop_advertismenets){ 5364 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5365 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5366 return; 5367 } 5368 } else 5369 #else /* ENABLE_LE_PERIPHERAL */ 5370 { 5371 if (stop_advertismenets) { 5372 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5373 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5374 return; 5375 } 5376 } 5377 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5378 #endif /* ENABLE_LE_PERIPHERAL */ 5379 #endif /* ENABLE_BLE */ 5380 5381 /* fall through */ 5382 5383 case HCI_HALTING_LE_SCAN_STOP: 5384 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5385 if (!hci_can_send_command_packet_now()) return; 5386 5387 #ifdef ENABLE_BLE 5388 #ifdef ENABLE_LE_CENTRAL 5389 if (hci_stack->le_scanning_active){ 5390 hci_le_scan_stop(); 5391 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5392 return; 5393 } 5394 #endif 5395 #endif 5396 5397 /* fall through */ 5398 5399 case HCI_HALTING_DISCONNECT_ALL: 5400 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5401 if (!hci_can_send_command_packet_now()) return; 5402 5403 // close all open connections 5404 connection = (hci_connection_t *) hci_stack->connections; 5405 if (connection) { 5406 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5407 5408 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5409 5410 // check state 5411 switch(connection->state) { 5412 case SENT_DISCONNECT: 5413 case RECEIVED_DISCONNECTION_COMPLETE: 5414 // wait until connection is gone 5415 return; 5416 default: 5417 break; 5418 } 5419 5420 // finally, send the disconnect command 5421 connection->state = SENT_DISCONNECT; 5422 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5423 return; 5424 } 5425 5426 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5427 // stop BIGs and BIG Syncs 5428 if (hci_stack->le_audio_bigs != NULL){ 5429 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5430 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5431 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5432 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5433 return; 5434 } 5435 if (hci_stack->le_audio_big_syncs != NULL){ 5436 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5437 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5438 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5439 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5440 return; 5441 } 5442 #endif 5443 5444 btstack_run_loop_remove_timer(&hci_stack->timeout); 5445 5446 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5447 log_info("HCI_STATE_HALTING: wait 50 ms"); 5448 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5449 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5450 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5451 btstack_run_loop_add_timer(&hci_stack->timeout); 5452 break; 5453 5454 case HCI_HALTING_W4_CLOSE_TIMER: 5455 // keep waiting 5456 break; 5457 5458 case HCI_HALTING_CLOSE: 5459 // close left over connections (that had not been properly closed before) 5460 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5461 hci_discard_connections(); 5462 5463 log_info("HCI_STATE_HALTING, calling off"); 5464 5465 // switch mode 5466 hci_power_control_off(); 5467 5468 log_info("HCI_STATE_HALTING, emitting state"); 5469 hci_emit_state(); 5470 log_info("HCI_STATE_HALTING, done"); 5471 break; 5472 5473 default: 5474 break; 5475 } 5476 }; 5477 5478 static void hci_falling_asleep_run(void){ 5479 hci_connection_t * connection; 5480 switch(hci_stack->substate) { 5481 case HCI_FALLING_ASLEEP_DISCONNECT: 5482 log_info("HCI_STATE_FALLING_ASLEEP"); 5483 // close all open connections 5484 connection = (hci_connection_t *) hci_stack->connections; 5485 if (connection){ 5486 5487 // send disconnect 5488 if (!hci_can_send_command_packet_now()) return; 5489 5490 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5491 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5492 5493 // send disconnected event right away - causes higher layer connections to get closed, too. 5494 hci_shutdown_connection(connection); 5495 return; 5496 } 5497 5498 if (hci_classic_supported()){ 5499 // disable page and inquiry scan 5500 if (!hci_can_send_command_packet_now()) return; 5501 5502 log_info("HCI_STATE_HALTING, disabling inq scans"); 5503 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5504 5505 // continue in next sub state 5506 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5507 break; 5508 } 5509 5510 /* fall through */ 5511 5512 case HCI_FALLING_ASLEEP_COMPLETE: 5513 log_info("HCI_STATE_HALTING, calling sleep"); 5514 // switch mode 5515 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5516 hci_emit_state(); 5517 break; 5518 5519 default: 5520 break; 5521 } 5522 } 5523 5524 #ifdef ENABLE_CLASSIC 5525 5526 static void hci_update_scan_enable(void){ 5527 // 2 = page scan, 1 = inq scan 5528 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5529 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5530 hci_run(); 5531 } 5532 5533 void gap_discoverable_control(uint8_t enable){ 5534 if (enable) enable = 1; // normalize argument 5535 5536 if (hci_stack->discoverable == enable){ 5537 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5538 return; 5539 } 5540 5541 hci_stack->discoverable = enable; 5542 hci_update_scan_enable(); 5543 } 5544 5545 void gap_connectable_control(uint8_t enable){ 5546 if (enable) enable = 1; // normalize argument 5547 5548 // don't emit event 5549 if (hci_stack->connectable == enable) return; 5550 5551 hci_stack->connectable = enable; 5552 hci_update_scan_enable(); 5553 } 5554 #endif 5555 5556 void gap_local_bd_addr(bd_addr_t address_buffer){ 5557 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5558 } 5559 5560 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5561 static void hci_host_num_completed_packets(void){ 5562 5563 // create packet manually as arrays are not supported and num_commands should not get reduced 5564 hci_reserve_packet_buffer(); 5565 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5566 5567 uint16_t size = 0; 5568 uint16_t num_handles = 0; 5569 packet[size++] = 0x35; 5570 packet[size++] = 0x0c; 5571 size++; // skip param len 5572 size++; // skip num handles 5573 5574 // add { handle, packets } entries 5575 btstack_linked_item_t * it; 5576 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5577 hci_connection_t * connection = (hci_connection_t *) it; 5578 if (connection->num_packets_completed){ 5579 little_endian_store_16(packet, size, connection->con_handle); 5580 size += 2; 5581 little_endian_store_16(packet, size, connection->num_packets_completed); 5582 size += 2; 5583 // 5584 num_handles++; 5585 connection->num_packets_completed = 0; 5586 } 5587 } 5588 5589 packet[2] = size - 3; 5590 packet[3] = num_handles; 5591 5592 hci_stack->host_completed_packets = 0; 5593 5594 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5595 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5596 5597 // release packet buffer for synchronous transport implementations 5598 if (hci_transport_synchronous()){ 5599 hci_release_packet_buffer(); 5600 hci_emit_transport_packet_sent(); 5601 } 5602 } 5603 #endif 5604 5605 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5606 UNUSED(ds); 5607 hci_stack->substate = HCI_HALTING_CLOSE; 5608 hci_halting_run(); 5609 } 5610 5611 static bool hci_run_acl_fragments(void){ 5612 if (hci_stack->acl_fragmentation_total_size > 0u) { 5613 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5614 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5615 if (connection) { 5616 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5617 hci_send_acl_packet_fragments(connection); 5618 return true; 5619 } 5620 } else { 5621 // connection gone -> discard further fragments 5622 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5623 hci_stack->acl_fragmentation_total_size = 0; 5624 hci_stack->acl_fragmentation_pos = 0; 5625 } 5626 } 5627 return false; 5628 } 5629 5630 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5631 static bool hci_run_iso_fragments(void){ 5632 if (hci_stack->iso_fragmentation_total_size > 0u) { 5633 // TODO: flow control 5634 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5635 hci_send_iso_packet_fragments(); 5636 return true; 5637 } 5638 } 5639 return false; 5640 } 5641 #endif 5642 5643 #ifdef ENABLE_CLASSIC 5644 5645 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5646 static bool hci_classic_operation_active(void) { 5647 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5648 return true; 5649 } 5650 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5651 return true; 5652 } 5653 btstack_linked_item_t * it; 5654 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5655 hci_connection_t *connection = (hci_connection_t *) it; 5656 switch (connection->state) { 5657 case SENT_CREATE_CONNECTION: 5658 case SENT_CANCEL_CONNECTION: 5659 case SENT_DISCONNECT: 5660 return true; 5661 default: 5662 break; 5663 } 5664 } 5665 return false; 5666 } 5667 #endif 5668 5669 static bool hci_run_general_gap_classic(void){ 5670 5671 // assert stack is working and classic is active 5672 if (hci_classic_supported() == false) return false; 5673 if (hci_stack->state != HCI_STATE_WORKING) return false; 5674 5675 // decline incoming connections 5676 if (hci_stack->decline_reason){ 5677 uint8_t reason = hci_stack->decline_reason; 5678 hci_stack->decline_reason = 0; 5679 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5680 return true; 5681 } 5682 5683 if (hci_stack->gap_tasks_classic != 0){ 5684 hci_run_gap_tasks_classic(); 5685 return true; 5686 } 5687 5688 // start/stop inquiry 5689 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5690 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5691 if (hci_classic_operation_active() == false) 5692 #endif 5693 { 5694 uint8_t duration = hci_stack->inquiry_state; 5695 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5696 if (hci_stack->inquiry_max_period_length != 0){ 5697 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); 5698 } else { 5699 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5700 } 5701 return true; 5702 } 5703 } 5704 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5705 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5706 hci_send_cmd(&hci_inquiry_cancel); 5707 return true; 5708 } 5709 5710 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5711 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5712 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5713 return true; 5714 } 5715 5716 // remote name request 5717 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5718 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5719 if (hci_classic_operation_active() == false) 5720 #endif 5721 { 5722 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5723 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5724 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5725 return true; 5726 } 5727 } 5728 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5729 // Local OOB data 5730 if (hci_stack->classic_read_local_oob_data){ 5731 hci_stack->classic_read_local_oob_data = false; 5732 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5733 hci_send_cmd(&hci_read_local_extended_oob_data); 5734 } else { 5735 hci_send_cmd(&hci_read_local_oob_data); 5736 } 5737 } 5738 #endif 5739 // pairing 5740 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5741 uint8_t state = hci_stack->gap_pairing_state; 5742 uint8_t pin_code[16]; 5743 switch (state){ 5744 case GAP_PAIRING_STATE_SEND_PIN: 5745 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5746 memset(pin_code, 0, 16); 5747 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5748 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5749 break; 5750 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5751 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5752 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5753 break; 5754 case GAP_PAIRING_STATE_SEND_PASSKEY: 5755 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5756 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5757 break; 5758 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5759 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5760 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5761 break; 5762 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5763 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5764 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5765 break; 5766 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5767 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5768 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5769 break; 5770 default: 5771 break; 5772 } 5773 return true; 5774 } 5775 return false; 5776 } 5777 #endif 5778 5779 #ifdef ENABLE_BLE 5780 5781 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5782 static uint8_t hci_le_num_phys(uint8_t phys){ 5783 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5784 btstack_assert(phys); 5785 return num_bits_set[phys]; 5786 } 5787 #endif 5788 5789 #ifdef ENABLE_LE_CENTRAL 5790 static void hci_le_scan_stop(void){ 5791 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5792 if (hci_extended_advertising_supported()) { 5793 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5794 } else 5795 #endif 5796 { 5797 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5798 } 5799 } 5800 5801 static void 5802 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5803 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5804 if (hci_extended_advertising_supported()) { 5805 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5806 uint16_t le_connection_scan_interval[3]; 5807 uint16_t le_connection_scan_window[3]; 5808 uint16_t le_connection_interval_min[3]; 5809 uint16_t le_connection_interval_max[3]; 5810 uint16_t le_connection_latency[3]; 5811 uint16_t le_supervision_timeout[3]; 5812 uint16_t le_minimum_ce_length[3]; 5813 uint16_t le_maximum_ce_length[3]; 5814 5815 uint8_t i; 5816 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5817 for (i=0;i<num_phys;i++){ 5818 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5819 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5820 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5821 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5822 le_connection_latency[i] = hci_stack->le_connection_latency; 5823 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5824 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5825 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5826 } 5827 hci_send_cmd(&hci_le_extended_create_connection, 5828 initiator_filter_policy, 5829 hci_stack->le_connection_own_addr_type, // our addr type: 5830 address_type, // peer address type 5831 address, // peer bd addr 5832 hci_stack->le_connection_phys, // initiating PHY 5833 le_connection_scan_interval, // conn scan interval 5834 le_connection_scan_window, // conn scan windows 5835 le_connection_interval_min, // conn interval min 5836 le_connection_interval_max, // conn interval max 5837 le_connection_latency, // conn latency 5838 le_supervision_timeout, // conn latency 5839 le_minimum_ce_length, // min ce length 5840 le_maximum_ce_length // max ce length 5841 ); 5842 } else 5843 #endif 5844 { 5845 hci_send_cmd(&hci_le_create_connection, 5846 hci_stack->le_connection_scan_interval, // conn scan interval 5847 hci_stack->le_connection_scan_window, // conn scan windows 5848 initiator_filter_policy, // don't use whitelist 5849 address_type, // peer address type 5850 address, // peer bd addr 5851 hci_stack->le_connection_own_addr_type, // our addr type: 5852 hci_stack->le_connection_interval_min, // conn interval min 5853 hci_stack->le_connection_interval_max, // conn interval max 5854 hci_stack->le_connection_latency, // conn latency 5855 hci_stack->le_supervision_timeout, // conn latency 5856 hci_stack->le_minimum_ce_length, // min ce length 5857 hci_stack->le_maximum_ce_length // max ce length 5858 ); 5859 } 5860 } 5861 #endif 5862 5863 #ifdef ENABLE_LE_PERIPHERAL 5864 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5865 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5866 uint8_t operation = 0; 5867 if (pos == 0){ 5868 // first fragment or complete data 5869 operation |= 1; 5870 } 5871 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5872 // last fragment or complete data 5873 operation |= 2; 5874 } 5875 return operation; 5876 } 5877 #endif 5878 #endif 5879 5880 static bool hci_run_general_gap_le(void){ 5881 5882 btstack_linked_list_iterator_t lit; 5883 5884 // Phase 1: collect what to stop 5885 5886 #ifdef ENABLE_LE_CENTRAL 5887 bool scanning_stop = false; 5888 bool connecting_stop = false; 5889 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5890 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5891 bool periodic_sync_stop = false; 5892 #endif 5893 #endif 5894 #endif 5895 5896 #ifdef ENABLE_LE_PERIPHERAL 5897 bool advertising_stop = false; 5898 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5899 le_advertising_set_t * advertising_stop_set = NULL; 5900 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5901 bool periodic_advertising_stop = false; 5902 #endif 5903 #endif 5904 #endif 5905 5906 // check if own address changes 5907 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5908 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5909 5910 // check if whitelist needs modification 5911 bool whitelist_modification_pending = false; 5912 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5913 while (btstack_linked_list_iterator_has_next(&lit)){ 5914 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5915 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5916 whitelist_modification_pending = true; 5917 break; 5918 } 5919 } 5920 5921 // check if resolving list needs modification 5922 bool resolving_list_modification_pending = false; 5923 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5924 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5925 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5926 resolving_list_modification_pending = true; 5927 } 5928 #endif 5929 5930 #ifdef ENABLE_LE_CENTRAL 5931 5932 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5933 // check if periodic advertiser list needs modification 5934 bool periodic_list_modification_pending = false; 5935 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5936 while (btstack_linked_list_iterator_has_next(&lit)){ 5937 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5938 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5939 periodic_list_modification_pending = true; 5940 break; 5941 } 5942 } 5943 #endif 5944 5945 // scanning control 5946 if (hci_stack->le_scanning_active) { 5947 // stop if: 5948 // - parameter change required 5949 // - it's disabled 5950 // - whitelist change required but used for scanning 5951 // - resolving list modified 5952 // - own address changes 5953 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5954 if ((hci_stack->le_scanning_param_update) || 5955 !hci_stack->le_scanning_enabled || 5956 (scanning_uses_whitelist && whitelist_modification_pending) || 5957 resolving_list_modification_pending || 5958 random_address_change){ 5959 5960 scanning_stop = true; 5961 } 5962 } 5963 5964 // connecting control 5965 bool connecting_with_whitelist; 5966 switch (hci_stack->le_connecting_state){ 5967 case LE_CONNECTING_DIRECT: 5968 case LE_CONNECTING_WHITELIST: 5969 // stop connecting if: 5970 // - connecting uses white and whitelist modification pending 5971 // - if it got disabled 5972 // - resolving list modified 5973 // - own address changes 5974 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5975 if ((connecting_with_whitelist && whitelist_modification_pending) || 5976 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5977 resolving_list_modification_pending || 5978 random_address_change) { 5979 5980 connecting_stop = true; 5981 } 5982 break; 5983 default: 5984 break; 5985 } 5986 5987 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5988 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5989 // periodic sync control 5990 bool sync_with_advertiser_list; 5991 switch(hci_stack->le_periodic_sync_state){ 5992 case LE_CONNECTING_DIRECT: 5993 case LE_CONNECTING_WHITELIST: 5994 // stop sync if: 5995 // - sync with advertiser list and advertiser list modification pending 5996 // - if it got disabled 5997 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5998 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5999 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6000 periodic_sync_stop = true; 6001 } 6002 break; 6003 default: 6004 break; 6005 } 6006 #endif 6007 #endif 6008 6009 #endif /* ENABLE_LE_CENTRAL */ 6010 6011 #ifdef ENABLE_LE_PERIPHERAL 6012 // le advertisement control 6013 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6014 // stop if: 6015 // - parameter change required 6016 // - random address used in advertising and changes 6017 // - it's disabled 6018 // - whitelist change required but used for advertisement filter policy 6019 // - resolving list modified 6020 // - own address changes 6021 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6022 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6023 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6024 if (advertising_change || 6025 (advertising_uses_random_address && random_address_change) || 6026 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6027 (advertising_uses_whitelist && whitelist_modification_pending) || 6028 resolving_list_modification_pending || 6029 random_address_change) { 6030 6031 advertising_stop = true; 6032 } 6033 } 6034 6035 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6036 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6037 btstack_linked_list_iterator_t it; 6038 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6039 while (btstack_linked_list_iterator_has_next(&it)){ 6040 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6041 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6042 // stop if: 6043 // - parameter change required 6044 // - random address used in connectable advertising and changes 6045 // - it's disabled 6046 // - whitelist change required but used for advertisement filter policy 6047 // - resolving list modified 6048 // - own address changes 6049 // - advertisement set will be removed 6050 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6051 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6052 bool advertising_uses_random_address = 6053 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6054 advertising_connectable; 6055 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6056 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6057 bool advertising_set_random_address_change = 6058 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6059 bool advertising_set_will_be_removed = 6060 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6061 if (advertising_parameter_change || 6062 (advertising_uses_random_address && advertising_set_random_address_change) || 6063 (advertising_enabled == false) || 6064 (advertising_uses_whitelist && whitelist_modification_pending) || 6065 resolving_list_modification_pending || 6066 advertising_set_will_be_removed) { 6067 6068 advertising_stop = true; 6069 advertising_stop_set = advertising_set; 6070 break; 6071 } 6072 } 6073 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6074 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6075 // stop if: 6076 // - it's disabled 6077 // - parameter change required 6078 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6079 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6080 if ((periodic_enabled == false) || periodic_parameter_change){ 6081 periodic_advertising_stop = true; 6082 advertising_stop_set = advertising_set; 6083 } 6084 } 6085 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6086 } 6087 } 6088 #endif 6089 6090 #endif 6091 6092 6093 // Phase 2: stop everything that should be off during modifications 6094 6095 6096 // 2.1 Outgoing connection 6097 #ifdef ENABLE_LE_CENTRAL 6098 if (connecting_stop){ 6099 hci_send_cmd(&hci_le_create_connection_cancel); 6100 return true; 6101 } 6102 #endif 6103 6104 // 2.2 Scanning 6105 #ifdef ENABLE_LE_CENTRAL 6106 if (scanning_stop){ 6107 hci_stack->le_scanning_active = false; 6108 hci_le_scan_stop(); 6109 return true; 6110 } 6111 6112 // 2.3 Periodic Sync 6113 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6114 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6115 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6116 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6117 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6118 return true; 6119 } 6120 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6121 if (periodic_sync_stop){ 6122 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6123 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6124 return true; 6125 } 6126 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6127 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6128 #endif /* ENABLE_LE_CENTRAL */ 6129 6130 // 2.4 Advertising: legacy, extended, periodic 6131 #ifdef ENABLE_LE_PERIPHERAL 6132 if (advertising_stop){ 6133 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6134 if (hci_extended_advertising_supported()) { 6135 uint8_t advertising_stop_handle; 6136 if (advertising_stop_set != NULL){ 6137 advertising_stop_handle = advertising_stop_set->advertising_handle; 6138 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6139 } else { 6140 advertising_stop_handle = 0; 6141 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6142 } 6143 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6144 const uint16_t durations[] = { 0 }; 6145 const uint16_t max_events[] = { 0 }; 6146 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6147 } else 6148 #endif 6149 { 6150 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6151 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6152 } 6153 return true; 6154 } 6155 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6156 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6157 if (periodic_advertising_stop){ 6158 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6159 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6160 return true; 6161 } 6162 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6163 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6164 #endif /* ENABLE_LE_PERIPHERAL */ 6165 6166 6167 // Phase 3: modify 6168 6169 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6170 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6171 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6172 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6173 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6174 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6175 #endif 6176 return true; 6177 } 6178 6179 #ifdef ENABLE_LE_CENTRAL 6180 if (hci_stack->le_scanning_param_update){ 6181 hci_stack->le_scanning_param_update = false; 6182 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6183 if (hci_extended_advertising_supported()){ 6184 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6185 uint8_t scan_types[2]; 6186 uint16_t scan_intervals[2]; 6187 uint16_t scan_windows[2]; 6188 6189 uint8_t i; 6190 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6191 for (i=0;i<num_phys;i++){ 6192 scan_types[i] = hci_stack->le_scan_type; 6193 scan_intervals[i] = hci_stack->le_scan_interval; 6194 scan_windows[i] = hci_stack->le_scan_window; 6195 } 6196 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6197 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6198 } else 6199 #endif 6200 { 6201 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6202 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6203 } 6204 return true; 6205 } 6206 #endif 6207 6208 #ifdef ENABLE_LE_PERIPHERAL 6209 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6210 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6211 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6212 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6213 if (hci_extended_advertising_supported()){ 6214 // map advertisment type to advertising event properties 6215 uint16_t adv_event_properties = 0; 6216 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6217 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6218 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6219 } 6220 hci_stack->le_advertising_set_in_current_command = 0; 6221 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6222 0, 6223 adv_event_properties, 6224 hci_stack->le_advertisements_interval_min, 6225 hci_stack->le_advertisements_interval_max, 6226 hci_stack->le_advertisements_channel_map, 6227 hci_stack->le_advertisements_own_addr_type, 6228 hci_stack->le_advertisements_direct_address_type, 6229 hci_stack->le_advertisements_direct_address, 6230 hci_stack->le_advertisements_filter_policy, 6231 0x7f, // tx power: no preference 6232 0x01, // primary adv phy: LE 1M 6233 0, // secondary adv max skip 6234 0x01, // secondary adv phy 6235 0, // adv sid 6236 0 // scan request notification 6237 ); 6238 } else 6239 #endif 6240 { 6241 hci_send_cmd(&hci_le_set_advertising_parameters, 6242 hci_stack->le_advertisements_interval_min, 6243 hci_stack->le_advertisements_interval_max, 6244 hci_stack->le_advertisements_type, 6245 hci_stack->le_advertisements_own_addr_type, 6246 hci_stack->le_advertisements_direct_address_type, 6247 hci_stack->le_advertisements_direct_address, 6248 hci_stack->le_advertisements_channel_map, 6249 hci_stack->le_advertisements_filter_policy); 6250 } 6251 return true; 6252 } 6253 6254 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6255 // assumption: only set if extended advertising is supported 6256 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6257 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6258 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6259 return true; 6260 } 6261 #endif 6262 6263 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6264 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6265 uint8_t adv_data_clean[31]; 6266 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6267 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6268 hci_stack->le_advertisements_data_len); 6269 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6270 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6271 if (hci_extended_advertising_supported()){ 6272 hci_stack->le_advertising_set_in_current_command = 0; 6273 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6274 } else 6275 #endif 6276 { 6277 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6278 } 6279 return true; 6280 } 6281 6282 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6283 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6284 uint8_t scan_data_clean[31]; 6285 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6286 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6287 hci_stack->le_scan_response_data_len); 6288 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6289 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6290 if (hci_extended_advertising_supported()){ 6291 hci_stack->le_advertising_set_in_current_command = 0; 6292 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6293 } else 6294 #endif 6295 { 6296 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6297 } 6298 return true; 6299 } 6300 6301 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6302 if (hci_extended_advertising_supported()) { 6303 btstack_linked_list_iterator_t it; 6304 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6305 while (btstack_linked_list_iterator_has_next(&it)){ 6306 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6307 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6308 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6309 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6310 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6311 return true; 6312 } 6313 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6314 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6315 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6316 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6317 advertising_set->advertising_handle, 6318 advertising_set->extended_params.advertising_event_properties, 6319 advertising_set->extended_params.primary_advertising_interval_min, 6320 advertising_set->extended_params.primary_advertising_interval_max, 6321 advertising_set->extended_params.primary_advertising_channel_map, 6322 advertising_set->extended_params.own_address_type, 6323 advertising_set->extended_params.peer_address_type, 6324 advertising_set->extended_params.peer_address, 6325 advertising_set->extended_params.advertising_filter_policy, 6326 advertising_set->extended_params.advertising_tx_power, 6327 advertising_set->extended_params.primary_advertising_phy, 6328 advertising_set->extended_params.secondary_advertising_max_skip, 6329 advertising_set->extended_params.secondary_advertising_phy, 6330 advertising_set->extended_params.advertising_sid, 6331 advertising_set->extended_params.scan_request_notification_enable 6332 ); 6333 return true; 6334 } 6335 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6336 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6337 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6338 return true; 6339 } 6340 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6341 uint16_t pos = advertising_set->adv_data_pos; 6342 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6343 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6344 if ((operation & 0x02) != 0){ 6345 // last fragment or complete data 6346 operation |= 2; 6347 advertising_set->adv_data_pos = 0; 6348 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6349 } else { 6350 advertising_set->adv_data_pos += data_to_upload; 6351 } 6352 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6353 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6354 return true; 6355 } 6356 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6357 uint16_t pos = advertising_set->scan_data_pos; 6358 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6359 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6360 if ((operation & 0x02) != 0){ 6361 advertising_set->scan_data_pos = 0; 6362 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6363 } else { 6364 advertising_set->scan_data_pos += data_to_upload; 6365 } 6366 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6367 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6368 return true; 6369 } 6370 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6371 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6372 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6373 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6374 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6375 advertising_set->advertising_handle, 6376 advertising_set->periodic_params.periodic_advertising_interval_min, 6377 advertising_set->periodic_params.periodic_advertising_interval_max, 6378 advertising_set->periodic_params.periodic_advertising_properties); 6379 return true; 6380 } 6381 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6382 uint16_t pos = advertising_set->periodic_data_pos; 6383 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6384 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6385 if ((operation & 0x02) != 0){ 6386 // last fragment or complete data 6387 operation |= 2; 6388 advertising_set->periodic_data_pos = 0; 6389 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6390 } else { 6391 advertising_set->periodic_data_pos += data_to_upload; 6392 } 6393 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6394 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6395 return true; 6396 } 6397 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6398 } 6399 } 6400 #endif 6401 6402 #endif 6403 6404 #ifdef ENABLE_LE_CENTRAL 6405 // if connect with whitelist was active and is not cancelled yet, wait until next time 6406 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6407 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6408 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6409 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6410 #endif 6411 #endif 6412 6413 // LE Whitelist Management 6414 if (whitelist_modification_pending){ 6415 // add/remove entries 6416 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6417 while (btstack_linked_list_iterator_has_next(&lit)){ 6418 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6419 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6420 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6421 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6422 bd_addr_type_t address_type = entry->address_type; 6423 bd_addr_t address; 6424 memcpy(address, entry->address, 6); 6425 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6426 // remove from whitelist if not scheduled for re-addition 6427 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6428 btstack_memory_whitelist_entry_free(entry); 6429 } 6430 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6431 return true; 6432 } 6433 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6434 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6435 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6436 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6437 return true; 6438 } 6439 } 6440 } 6441 6442 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6443 // LE Resolving List Management 6444 if (resolving_list_supported) { 6445 uint16_t i; 6446 switch (hci_stack->le_resolving_list_state) { 6447 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6448 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6449 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6450 return true; 6451 case LE_RESOLVING_LIST_READ_SIZE: 6452 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6453 hci_send_cmd(&hci_le_read_resolving_list_size); 6454 return true; 6455 case LE_RESOLVING_LIST_SEND_CLEAR: 6456 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6457 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6458 sizeof(hci_stack->le_resolving_list_add_entries)); 6459 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6460 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6461 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6462 sizeof(hci_stack->le_resolving_list_remove_entries)); 6463 hci_send_cmd(&hci_le_clear_resolving_list); 6464 return true; 6465 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6466 // first remove old entries 6467 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6468 uint8_t offset = i >> 3; 6469 uint8_t mask = 1 << (i & 7); 6470 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6471 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6472 bd_addr_t peer_identity_addreses; 6473 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6474 sm_key_t peer_irk; 6475 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6476 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6477 6478 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6479 // trigger whitelist entry 'update' (work around for controller bug) 6480 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6481 while (btstack_linked_list_iterator_has_next(&lit)) { 6482 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6483 if (entry->address_type != peer_identity_addr_type) continue; 6484 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6485 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6486 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6487 } 6488 #endif 6489 6490 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6491 peer_identity_addreses); 6492 return true; 6493 } 6494 6495 // then add new entries 6496 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6497 uint8_t offset = i >> 3; 6498 uint8_t mask = 1 << (i & 7); 6499 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6500 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6501 bd_addr_t peer_identity_addreses; 6502 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6503 sm_key_t peer_irk; 6504 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6505 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6506 if (btstack_is_null(peer_irk, 16)) continue; 6507 const uint8_t *local_irk = gap_get_persistent_irk(); 6508 // command uses format specifier 'P' that stores 16-byte value without flip 6509 uint8_t local_irk_flipped[16]; 6510 uint8_t peer_irk_flipped[16]; 6511 reverse_128(local_irk, local_irk_flipped); 6512 reverse_128(peer_irk, peer_irk_flipped); 6513 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6514 peer_irk_flipped, local_irk_flipped); 6515 return true; 6516 } 6517 6518 // finally, set privacy mode 6519 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6520 uint8_t offset = i >> 3; 6521 uint8_t mask = 1 << (i & 7); 6522 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6523 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6524 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6525 // Network Privacy Mode is default 6526 continue; 6527 } 6528 bd_addr_t peer_identity_address; 6529 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6530 sm_key_t peer_irk; 6531 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6532 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6533 if (btstack_is_null(peer_irk, 16)) continue; 6534 // command uses format specifier 'P' that stores 16-byte value without flip 6535 uint8_t peer_irk_flipped[16]; 6536 reverse_128(peer_irk, peer_irk_flipped); 6537 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6538 return true; 6539 } 6540 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6541 break; 6542 6543 default: 6544 break; 6545 } 6546 } 6547 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6548 #endif 6549 6550 #ifdef ENABLE_LE_CENTRAL 6551 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6552 // LE Whitelist Management 6553 if (periodic_list_modification_pending){ 6554 // add/remove entries 6555 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6556 while (btstack_linked_list_iterator_has_next(&lit)){ 6557 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6558 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6559 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6560 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6561 return true; 6562 } 6563 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6564 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6565 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6566 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6567 return true; 6568 } 6569 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6570 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6571 btstack_memory_periodic_advertiser_list_entry_free(entry); 6572 } 6573 } 6574 } 6575 #endif 6576 #endif 6577 6578 #ifdef ENABLE_LE_CENTRAL 6579 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6580 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6581 if (hci_stack->le_past_set_default_params){ 6582 hci_stack->le_past_set_default_params = false; 6583 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6584 hci_stack->le_past_mode, 6585 hci_stack->le_past_skip, 6586 hci_stack->le_past_sync_timeout, 6587 hci_stack->le_past_cte_type); 6588 return true; 6589 } 6590 #endif 6591 #endif 6592 #endif 6593 6594 // post-pone all actions until stack is fully working 6595 if (hci_stack->state != HCI_STATE_WORKING) return false; 6596 6597 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6598 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6599 6600 // Phase 4: restore state 6601 6602 #ifdef ENABLE_LE_CENTRAL 6603 // re-start scanning 6604 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6605 hci_stack->le_scanning_active = true; 6606 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6607 if (hci_extended_advertising_supported()){ 6608 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6609 } else 6610 #endif 6611 { 6612 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6613 } 6614 return true; 6615 } 6616 #endif 6617 6618 #ifdef ENABLE_LE_CENTRAL 6619 // re-start connecting 6620 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6621 bd_addr_t null_addr; 6622 memset(null_addr, 0, 6); 6623 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6624 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6625 hci_send_le_create_connection(1, 0, null_addr); 6626 return true; 6627 } 6628 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6629 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6630 switch(hci_stack->le_periodic_sync_request){ 6631 case LE_CONNECTING_DIRECT: 6632 case LE_CONNECTING_WHITELIST: 6633 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6634 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6635 hci_stack->le_periodic_sync_options, 6636 hci_stack->le_periodic_sync_advertising_sid, 6637 hci_stack->le_periodic_sync_advertiser_address_type, 6638 hci_stack->le_periodic_sync_advertiser_address, 6639 hci_stack->le_periodic_sync_skip, 6640 hci_stack->le_periodic_sync_timeout, 6641 hci_stack->le_periodic_sync_cte_type); 6642 return true; 6643 default: 6644 break; 6645 } 6646 } 6647 #endif 6648 #endif 6649 6650 #ifdef ENABLE_LE_PERIPHERAL 6651 // re-start advertising 6652 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6653 // check if advertisements should be enabled given 6654 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6655 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6656 6657 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6658 if (hci_extended_advertising_supported()){ 6659 const uint8_t advertising_handles[] = { 0 }; 6660 const uint16_t durations[] = { 0 }; 6661 const uint16_t max_events[] = { 0 }; 6662 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6663 } else 6664 #endif 6665 { 6666 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6667 } 6668 return true; 6669 } 6670 6671 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6672 if (hci_extended_advertising_supported()) { 6673 btstack_linked_list_iterator_t it; 6674 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6675 while (btstack_linked_list_iterator_has_next(&it)) { 6676 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6677 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6678 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6679 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6680 const uint16_t durations[] = { advertising_set->enable_timeout }; 6681 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6682 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6683 return true; 6684 } 6685 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6686 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6687 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6688 uint8_t enable = 1; 6689 if (advertising_set->periodic_include_adi){ 6690 enable |= 2; 6691 } 6692 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6693 return true; 6694 } 6695 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6696 } 6697 } 6698 #endif 6699 #endif 6700 6701 return false; 6702 } 6703 6704 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6705 static bool hci_run_iso_tasks(void){ 6706 btstack_linked_list_iterator_t it; 6707 6708 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6709 return false; 6710 } 6711 6712 // BIG 6713 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6714 while (btstack_linked_list_iterator_has_next(&it)){ 6715 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6716 switch (big->state){ 6717 case LE_AUDIO_BIG_STATE_CREATE: 6718 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6719 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6720 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6721 hci_send_cmd(&hci_le_create_big, 6722 big->params->big_handle, 6723 big->params->advertising_handle, 6724 big->params->num_bis, 6725 big->params->sdu_interval_us, 6726 big->params->max_sdu, 6727 big->params->max_transport_latency_ms, 6728 big->params->rtn, 6729 big->params->phy, 6730 big->params->packing, 6731 big->params->framing, 6732 big->params->encryption, 6733 big->params->broadcast_code); 6734 return true; 6735 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6736 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6737 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); 6738 return true; 6739 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6740 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6741 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6742 return true; 6743 case LE_AUDIO_BIG_STATE_TERMINATE: 6744 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6745 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6746 return true; 6747 default: 6748 break; 6749 } 6750 } 6751 6752 // BIG Sync 6753 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6754 while (btstack_linked_list_iterator_has_next(&it)){ 6755 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6756 switch (big_sync->state){ 6757 case LE_AUDIO_BIG_STATE_CREATE: 6758 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6759 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6760 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6761 hci_send_cmd(&hci_le_big_create_sync, 6762 big_sync->params->big_handle, 6763 big_sync->params->sync_handle, 6764 big_sync->params->encryption, 6765 big_sync->params->broadcast_code, 6766 big_sync->params->mse, 6767 big_sync->params->big_sync_timeout_10ms, 6768 big_sync->params->num_bis, 6769 big_sync->params->bis_indices); 6770 return true; 6771 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6772 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6773 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); 6774 return true; 6775 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6776 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6777 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6778 return true; 6779 case LE_AUDIO_BIG_STATE_TERMINATE: 6780 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6781 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6782 return true; 6783 default: 6784 break; 6785 } 6786 } 6787 6788 // CIG 6789 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6790 while (btstack_linked_list_iterator_has_next(&it)) { 6791 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6792 uint8_t i; 6793 // Set CIG Parameters 6794 uint8_t cis_id[MAX_NR_CIS]; 6795 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6796 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6797 uint8_t phy_c_to_p[MAX_NR_CIS]; 6798 uint8_t phy_p_to_c[MAX_NR_CIS]; 6799 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6800 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6801 switch (cig->state) { 6802 case LE_AUDIO_CIG_STATE_CREATE: 6803 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6804 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6805 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6806 le_audio_cig_params_t * params = cig->params; 6807 for (i = 0; i < params->num_cis; i++) { 6808 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6809 cis_id[i] = cis_params->cis_id; 6810 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6811 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6812 phy_c_to_p[i] = cis_params->phy_c_to_p; 6813 phy_p_to_c[i] = cis_params->phy_p_to_c; 6814 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6815 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6816 } 6817 hci_send_cmd(&hci_le_set_cig_parameters, 6818 cig->cig_id, 6819 params->sdu_interval_c_to_p, 6820 params->sdu_interval_p_to_c, 6821 params->worst_case_sca, 6822 params->packing, 6823 params->framing, 6824 params->max_transport_latency_c_to_p, 6825 params->max_transport_latency_p_to_c, 6826 params->num_cis, 6827 cis_id, 6828 max_sdu_c_to_p, 6829 max_sdu_p_to_c, 6830 phy_c_to_p, 6831 phy_p_to_c, 6832 rtn_c_to_p, 6833 rtn_p_to_c 6834 ); 6835 return true; 6836 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6837 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6838 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6839 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6840 for (i=0;i<cig->num_cis;i++){ 6841 cig->cis_setup_active[i] = true; 6842 } 6843 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6844 return true; 6845 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6846 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6847 // find next path to setup 6848 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6849 if (cig->cis_established[cis_index] == false) { 6850 continue; 6851 } 6852 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6853 bool setup = true; 6854 if (cis_direction == 0){ 6855 // 0 - input - host to controller 6856 // we are central => central to peripheral 6857 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6858 } else { 6859 // 1 - output - controller to host 6860 // we are central => peripheral to central 6861 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6862 } 6863 if (setup){ 6864 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6865 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6866 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6867 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6868 return true; 6869 } 6870 cig->state_vars.next_cis++; 6871 } 6872 // emit done 6873 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6874 default: 6875 break; 6876 } 6877 } 6878 6879 // CIS Accept/Reject 6880 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6881 while (btstack_linked_list_iterator_has_next(&it)) { 6882 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6883 hci_con_handle_t con_handle; 6884 switch (iso_stream->state){ 6885 case HCI_ISO_STREAM_W2_ACCEPT: 6886 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6887 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6888 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6889 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6890 return true; 6891 case HCI_ISO_STREAM_W2_REJECT: 6892 con_handle = iso_stream->cis_handle; 6893 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6894 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6895 hci_iso_stream_finalize(iso_stream); 6896 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6897 return true; 6898 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6899 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6900 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6901 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6902 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6903 break; 6904 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6905 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6906 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6907 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6908 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6909 break; 6910 default: 6911 break; 6912 } 6913 } 6914 6915 return false; 6916 } 6917 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6918 #endif 6919 6920 static bool hci_run_general_pending_commands(void){ 6921 btstack_linked_item_t * it; 6922 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6923 hci_connection_t * connection = (hci_connection_t *) it; 6924 6925 switch(connection->state){ 6926 case SEND_CREATE_CONNECTION: 6927 switch(connection->address_type){ 6928 #ifdef ENABLE_CLASSIC 6929 case BD_ADDR_TYPE_ACL: 6930 log_info("sending hci_create_connection"); 6931 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6932 break; 6933 #endif 6934 default: 6935 #ifdef ENABLE_BLE 6936 #ifdef ENABLE_LE_CENTRAL 6937 log_info("sending hci_le_create_connection"); 6938 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6939 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6940 hci_send_le_create_connection(0, connection->address_type, connection->address); 6941 connection->state = SENT_CREATE_CONNECTION; 6942 #endif 6943 #endif 6944 break; 6945 } 6946 return true; 6947 6948 #ifdef ENABLE_CLASSIC 6949 case RECEIVED_CONNECTION_REQUEST: 6950 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6951 log_info("sending hci_accept_connection_request"); 6952 connection->state = ACCEPTED_CONNECTION_REQUEST; 6953 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6954 return true; 6955 } 6956 break; 6957 #endif 6958 case SEND_DISCONNECT: 6959 connection->state = SENT_DISCONNECT; 6960 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6961 return true; 6962 6963 default: 6964 break; 6965 } 6966 6967 // no further commands if connection is about to get shut down 6968 if (connection->state == SENT_DISCONNECT) continue; 6969 6970 #ifdef ENABLE_CLASSIC 6971 6972 // Handling link key request requires remote supported features 6973 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6974 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6975 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6976 6977 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6978 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6979 if (have_link_key && security_level_sufficient){ 6980 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6981 } else { 6982 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6983 } 6984 return true; 6985 } 6986 6987 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6988 log_info("denying to pin request"); 6989 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6990 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6991 return true; 6992 } 6993 6994 // security assessment requires remote features 6995 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6996 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6997 hci_ssp_assess_security_on_io_cap_request(connection); 6998 // 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 6999 } 7000 7001 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7002 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7003 // set authentication requirements: 7004 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7005 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7006 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7007 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7008 authreq |= 1; 7009 } 7010 bool bonding = hci_stack->bondable; 7011 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7012 // if we have received IO Cap Response, we're in responder role 7013 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7014 if (bonding && !remote_bonding){ 7015 log_info("Remote not bonding, dropping local flag"); 7016 bonding = false; 7017 } 7018 } 7019 if (bonding){ 7020 if (connection->bonding_flags & BONDING_DEDICATED){ 7021 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7022 } else { 7023 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7024 } 7025 } 7026 uint8_t have_oob_data = 0; 7027 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7028 if (connection->classic_oob_c_192 != NULL){ 7029 have_oob_data |= 1; 7030 } 7031 if (connection->classic_oob_c_256 != NULL){ 7032 have_oob_data |= 2; 7033 } 7034 #endif 7035 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7036 return true; 7037 } 7038 7039 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7040 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7041 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7042 return true; 7043 } 7044 7045 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7046 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7047 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7048 const uint8_t zero[16] = { 0 }; 7049 const uint8_t * r_192 = zero; 7050 const uint8_t * c_192 = zero; 7051 const uint8_t * r_256 = zero; 7052 const uint8_t * c_256 = zero; 7053 // verify P-256 OOB 7054 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7055 c_256 = connection->classic_oob_c_256; 7056 if (connection->classic_oob_r_256 != NULL) { 7057 r_256 = connection->classic_oob_r_256; 7058 } 7059 } 7060 // verify P-192 OOB 7061 if ((connection->classic_oob_c_192 != NULL)) { 7062 c_192 = connection->classic_oob_c_192; 7063 if (connection->classic_oob_r_192 != NULL) { 7064 r_192 = connection->classic_oob_r_192; 7065 } 7066 } 7067 7068 // assess security 7069 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7070 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7071 if (need_level_4 && !can_reach_level_4){ 7072 log_info("Level 4 required, but not possible -> abort"); 7073 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7074 // send oob negative reply 7075 c_256 = NULL; 7076 c_192 = NULL; 7077 } 7078 7079 // Reply 7080 if (c_256 != zero) { 7081 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7082 } else if (c_192 != zero){ 7083 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7084 } else { 7085 hci_stack->classic_oob_con_handle = connection->con_handle; 7086 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7087 } 7088 return true; 7089 } 7090 #endif 7091 7092 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7093 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7094 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7095 return true; 7096 } 7097 7098 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7099 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7100 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7101 return true; 7102 } 7103 7104 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7105 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7106 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7107 return true; 7108 } 7109 7110 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7111 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7112 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7113 connection->state = SENT_DISCONNECT; 7114 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7115 return true; 7116 } 7117 7118 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7119 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7120 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7121 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7122 return true; 7123 } 7124 7125 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7126 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7127 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7128 return true; 7129 } 7130 7131 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7132 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7133 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7134 return true; 7135 } 7136 7137 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7138 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7139 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7140 return true; 7141 } 7142 7143 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7144 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7145 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7146 return true; 7147 } 7148 7149 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7150 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7151 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7152 return true; 7153 } 7154 #endif 7155 7156 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7157 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7158 #ifdef ENABLE_CLASSIC 7159 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7160 #endif 7161 if (connection->state != SENT_DISCONNECT){ 7162 connection->state = SENT_DISCONNECT; 7163 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7164 return true; 7165 } 7166 } 7167 7168 #ifdef ENABLE_CLASSIC 7169 uint16_t sniff_min_interval; 7170 switch (connection->sniff_min_interval){ 7171 case 0: 7172 break; 7173 case 0xffff: 7174 connection->sniff_min_interval = 0; 7175 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7176 return true; 7177 default: 7178 sniff_min_interval = connection->sniff_min_interval; 7179 connection->sniff_min_interval = 0; 7180 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7181 return true; 7182 } 7183 7184 if (connection->sniff_subrating_max_latency != 0xffff){ 7185 uint16_t max_latency = connection->sniff_subrating_max_latency; 7186 connection->sniff_subrating_max_latency = 0; 7187 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7188 return true; 7189 } 7190 7191 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7192 uint8_t service_type = (uint8_t) connection->qos_service_type; 7193 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7194 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); 7195 return true; 7196 } 7197 7198 if (connection->request_role != HCI_ROLE_INVALID){ 7199 hci_role_t role = connection->request_role; 7200 connection->request_role = HCI_ROLE_INVALID; 7201 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7202 return true; 7203 } 7204 #endif 7205 7206 if (connection->gap_connection_tasks != 0){ 7207 #ifdef ENABLE_CLASSIC 7208 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7209 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7210 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7211 return true; 7212 } 7213 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7214 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7215 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7216 return true; 7217 } 7218 #endif 7219 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7220 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7221 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7222 return true; 7223 } 7224 #ifdef ENABLE_BLE 7225 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7226 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7227 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7228 return true; 7229 } 7230 #endif 7231 } 7232 7233 #ifdef ENABLE_BLE 7234 switch (connection->le_con_parameter_update_state){ 7235 // response to L2CAP CON PARAMETER UPDATE REQUEST 7236 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7237 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7238 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7239 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7240 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7241 return true; 7242 case CON_PARAMETER_UPDATE_REPLY: 7243 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7244 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7245 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7246 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7247 return true; 7248 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7249 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7250 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7251 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7252 return true; 7253 default: 7254 break; 7255 } 7256 if (connection->le_phy_update_all_phys != 0xffu){ 7257 uint8_t all_phys = connection->le_phy_update_all_phys; 7258 connection->le_phy_update_all_phys = 0xff; 7259 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); 7260 return true; 7261 } 7262 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7263 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7264 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7265 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7266 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7267 return true; 7268 } 7269 #endif 7270 #endif 7271 } 7272 return false; 7273 } 7274 7275 static void hci_run(void){ 7276 7277 // stack state sub statemachines 7278 switch (hci_stack->state) { 7279 case HCI_STATE_INITIALIZING: 7280 hci_initializing_run(); 7281 break; 7282 case HCI_STATE_HALTING: 7283 hci_halting_run(); 7284 break; 7285 case HCI_STATE_FALLING_ASLEEP: 7286 hci_falling_asleep_run(); 7287 break; 7288 default: 7289 break; 7290 } 7291 7292 // allow to run after initialization to working transition 7293 if (hci_stack->state != HCI_STATE_WORKING){ 7294 return; 7295 } 7296 7297 bool done; 7298 7299 // send continuation fragments first, as they block the prepared packet buffer 7300 done = hci_run_acl_fragments(); 7301 if (done) return; 7302 7303 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7304 done = hci_run_iso_fragments(); 7305 if (done) return; 7306 #endif 7307 7308 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7309 // send host num completed packets next as they don't require num_cmd_packets > 0 7310 if (!hci_can_send_comand_packet_transport()) return; 7311 if (hci_stack->host_completed_packets){ 7312 hci_host_num_completed_packets(); 7313 return; 7314 } 7315 #endif 7316 7317 if (!hci_can_send_command_packet_now()) return; 7318 7319 // global/non-connection oriented commands 7320 7321 7322 #ifdef ENABLE_CLASSIC 7323 // general gap classic 7324 done = hci_run_general_gap_classic(); 7325 if (done) return; 7326 #endif 7327 7328 #ifdef ENABLE_BLE 7329 // general gap le 7330 done = hci_run_general_gap_le(); 7331 if (done) return; 7332 7333 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7334 // ISO related tasks, e.g. BIG create/terminate/sync 7335 done = hci_run_iso_tasks(); 7336 if (done) return; 7337 #endif 7338 #endif 7339 7340 // send pending HCI commands 7341 hci_run_general_pending_commands(); 7342 } 7343 7344 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7345 // house-keeping 7346 7347 #ifdef ENABLE_CLASSIC 7348 bd_addr_t addr; 7349 hci_connection_t * conn; 7350 #endif 7351 #ifdef ENABLE_LE_CENTRAL 7352 uint8_t initiator_filter_policy; 7353 #endif 7354 7355 uint16_t opcode = little_endian_read_16(packet, 0); 7356 switch (opcode) { 7357 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7358 hci_stack->loopback_mode = packet[3]; 7359 break; 7360 7361 #ifdef ENABLE_CLASSIC 7362 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7363 reverse_bd_addr(&packet[3], addr); 7364 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7365 7366 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7367 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7368 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7369 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7370 } 7371 7372 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7373 if (!conn) { 7374 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7375 if (!conn) { 7376 // notify client that alloc failed 7377 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7378 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7379 } 7380 conn->state = SEND_CREATE_CONNECTION; 7381 } 7382 7383 log_info("conn state %u", conn->state); 7384 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7385 switch (conn->state) { 7386 // if connection active exists 7387 case OPEN: 7388 // and OPEN, emit connection complete command 7389 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7390 // packet not sent to controller 7391 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7392 case RECEIVED_DISCONNECTION_COMPLETE: 7393 // create connection triggered in disconnect complete event, let's do it now 7394 break; 7395 case SEND_CREATE_CONNECTION: 7396 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7397 if (hci_classic_operation_active()){ 7398 return ERROR_CODE_SUCCESS; 7399 } 7400 #endif 7401 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7402 break; 7403 default: 7404 // otherwise, just ignore as it is already in the open process 7405 // packet not sent to controller 7406 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7407 } 7408 conn->state = SENT_CREATE_CONNECTION; 7409 7410 // track outgoing connection 7411 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7412 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7413 break; 7414 7415 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7416 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7417 if (conn == NULL) { 7418 // neither SCO nor ACL connection for con handle 7419 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7420 } else { 7421 switch (conn->address_type){ 7422 case BD_ADDR_TYPE_ACL: 7423 // assert SCO connection does not exit 7424 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7425 return ERROR_CODE_COMMAND_DISALLOWED; 7426 } 7427 // allocate connection struct 7428 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7429 HCI_ROLE_MASTER); 7430 if (!conn) { 7431 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7432 } 7433 break; 7434 case BD_ADDR_TYPE_SCO: 7435 // update of existing SCO connection 7436 break; 7437 default: 7438 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7439 } 7440 } 7441 7442 // conn refers to hci connection of type sco now 7443 7444 conn->state = SENT_CREATE_CONNECTION; 7445 7446 // track outgoing connection to handle command status with error 7447 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7448 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7449 7450 // setup_synchronous_connection? Voice setting at offset 22 7451 // TODO: compare to current setting if sco connection already active 7452 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7453 break; 7454 7455 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7456 // get SCO connection 7457 reverse_bd_addr(&packet[3], addr); 7458 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7459 if (conn == NULL){ 7460 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7461 } 7462 7463 conn->state = ACCEPTED_CONNECTION_REQUEST; 7464 7465 // track outgoing connection to handle command status with error 7466 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7467 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7468 7469 // accept_synchronous_connection? Voice setting at offset 18 7470 // TODO: compare to current setting if sco connection already active 7471 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7472 break; 7473 #endif 7474 7475 #ifdef ENABLE_BLE 7476 #ifdef ENABLE_LE_CENTRAL 7477 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7478 // white list used? 7479 initiator_filter_policy = packet[7]; 7480 switch (initiator_filter_policy) { 7481 case 0: 7482 // whitelist not used 7483 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7484 break; 7485 case 1: 7486 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7487 break; 7488 default: 7489 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7490 break; 7491 } 7492 // track outgoing connection 7493 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7494 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7495 break; 7496 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7497 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7498 // white list used? 7499 initiator_filter_policy = packet[3]; 7500 switch (initiator_filter_policy) { 7501 case 0: 7502 // whitelist not used 7503 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7504 break; 7505 case 1: 7506 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7507 break; 7508 default: 7509 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7510 break; 7511 } 7512 // track outgoing connection 7513 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7514 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7515 break; 7516 #endif 7517 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7518 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7519 break; 7520 #endif 7521 #endif /* ENABLE_BLE */ 7522 default: 7523 break; 7524 } 7525 7526 hci_stack->num_cmd_packets--; 7527 7528 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7529 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7530 if (err != 0){ 7531 return ERROR_CODE_HARDWARE_FAILURE; 7532 } 7533 return ERROR_CODE_SUCCESS; 7534 } 7535 7536 // disconnect because of security block 7537 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7538 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7539 if (!connection) return; 7540 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7541 } 7542 7543 7544 // Configure Secure Simple Pairing 7545 7546 #ifdef ENABLE_CLASSIC 7547 7548 // enable will enable SSP during init 7549 void gap_ssp_set_enable(int enable){ 7550 hci_stack->ssp_enable = enable; 7551 } 7552 7553 static int hci_local_ssp_activated(void){ 7554 return gap_ssp_supported() && hci_stack->ssp_enable; 7555 } 7556 7557 // if set, BTstack will respond to io capability request using authentication requirement 7558 void gap_ssp_set_io_capability(int io_capability){ 7559 hci_stack->ssp_io_capability = io_capability; 7560 } 7561 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7562 hci_stack->ssp_authentication_requirement = authentication_requirement; 7563 } 7564 7565 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7566 void gap_ssp_set_auto_accept(int auto_accept){ 7567 hci_stack->ssp_auto_accept = auto_accept; 7568 } 7569 7570 void gap_secure_connections_enable(bool enable){ 7571 hci_stack->secure_connections_enable = enable; 7572 } 7573 bool gap_secure_connections_active(void){ 7574 return hci_stack->secure_connections_active; 7575 } 7576 7577 #endif 7578 7579 // va_list part of hci_send_cmd 7580 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7581 if (!hci_can_send_command_packet_now()){ 7582 log_error("hci_send_cmd called but cannot send packet now"); 7583 return ERROR_CODE_COMMAND_DISALLOWED; 7584 } 7585 7586 // for HCI INITIALIZATION 7587 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7588 hci_stack->last_cmd_opcode = cmd->opcode; 7589 7590 hci_reserve_packet_buffer(); 7591 uint8_t * packet = hci_stack->hci_packet_buffer; 7592 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7593 uint8_t status = hci_send_cmd_packet(packet, size); 7594 7595 // release packet buffer on error or for synchronous transport implementations 7596 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7597 hci_release_packet_buffer(); 7598 hci_emit_transport_packet_sent(); 7599 } 7600 7601 return status; 7602 } 7603 7604 /** 7605 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7606 */ 7607 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7608 va_list argptr; 7609 va_start(argptr, cmd); 7610 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7611 va_end(argptr); 7612 return status; 7613 } 7614 7615 // Create various non-HCI events. 7616 // TODO: generalize, use table similar to hci_create_command 7617 7618 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7619 // dump packet 7620 if (dump) { 7621 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7622 } 7623 7624 // dispatch to all event handlers 7625 btstack_linked_list_iterator_t it; 7626 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7627 while (btstack_linked_list_iterator_has_next(&it)){ 7628 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7629 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7630 } 7631 } 7632 7633 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7634 if (!hci_stack->acl_packet_handler) return; 7635 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7636 } 7637 7638 #ifdef ENABLE_CLASSIC 7639 static void hci_notify_if_sco_can_send_now(void){ 7640 // notify SCO sender if waiting 7641 if (!hci_stack->sco_waiting_for_can_send_now) return; 7642 if (hci_can_send_sco_packet_now()){ 7643 hci_stack->sco_waiting_for_can_send_now = 0; 7644 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7645 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7646 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7647 } 7648 } 7649 7650 // parsing end emitting has been merged to reduce code size 7651 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7652 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7653 7654 uint8_t * eir_data; 7655 ad_context_t context; 7656 const uint8_t * name; 7657 uint8_t name_len; 7658 7659 if (size < 3) return; 7660 7661 int event_type = hci_event_packet_get_type(packet); 7662 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7663 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7664 7665 switch (event_type){ 7666 case HCI_EVENT_INQUIRY_RESULT: 7667 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7668 if (size != (3 + (num_responses * 14))) return; 7669 break; 7670 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7671 if (size != 257) return; 7672 if (num_responses != 1) return; 7673 break; 7674 default: 7675 return; 7676 } 7677 7678 // event[1] is set at the end 7679 int i; 7680 for (i=0; i<num_responses;i++){ 7681 memset(event, 0, sizeof(event)); 7682 event[0] = GAP_EVENT_INQUIRY_RESULT; 7683 uint8_t event_size = 27; // if name is not set by EIR 7684 7685 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7686 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7687 (void)memcpy(&event[9], 7688 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7689 3); // class of device 7690 (void)memcpy(&event[12], 7691 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7692 2); // clock offset 7693 7694 switch (event_type){ 7695 case HCI_EVENT_INQUIRY_RESULT: 7696 // 14,15,16,17 = 0, size 18 7697 break; 7698 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7699 event[14] = 1; 7700 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7701 // 16,17 = 0, size 18 7702 break; 7703 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7704 event[14] = 1; 7705 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7706 // EIR packets only contain a single inquiry response 7707 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7708 name = NULL; 7709 // Iterate over EIR data 7710 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7711 uint8_t data_type = ad_iterator_get_data_type(&context); 7712 uint8_t data_size = ad_iterator_get_data_len(&context); 7713 const uint8_t * data = ad_iterator_get_data(&context); 7714 // Prefer Complete Local Name over Shortened Local Name 7715 switch (data_type){ 7716 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7717 if (name) continue; 7718 /* fall through */ 7719 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7720 name = data; 7721 name_len = data_size; 7722 break; 7723 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7724 if (data_size != 8) break; 7725 event[16] = 1; 7726 memcpy(&event[17], data, 8); 7727 break; 7728 default: 7729 break; 7730 } 7731 } 7732 if (name){ 7733 event[25] = 1; 7734 // truncate name if needed 7735 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7736 event[26] = len; 7737 (void)memcpy(&event[27], name, len); 7738 event_size += len; 7739 } 7740 break; 7741 default: 7742 return; 7743 } 7744 event[1] = event_size - 2; 7745 hci_emit_event(event, event_size, 1); 7746 } 7747 } 7748 #endif 7749 7750 void hci_emit_state(void){ 7751 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7752 uint8_t event[3]; 7753 event[0] = BTSTACK_EVENT_STATE; 7754 event[1] = sizeof(event) - 2u; 7755 event[2] = hci_stack->state; 7756 hci_emit_event(event, sizeof(event), 1); 7757 } 7758 7759 #ifdef ENABLE_CLASSIC 7760 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7761 uint8_t event[13]; 7762 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7763 event[1] = sizeof(event) - 2; 7764 event[2] = status; 7765 little_endian_store_16(event, 3, con_handle); 7766 reverse_bd_addr(address, &event[5]); 7767 event[11] = 1; // ACL connection 7768 event[12] = 0; // encryption disabled 7769 hci_emit_event(event, sizeof(event), 1); 7770 } 7771 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7772 if (disable_l2cap_timeouts) return; 7773 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7774 uint8_t event[4]; 7775 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7776 event[1] = sizeof(event) - 2; 7777 little_endian_store_16(event, 2, conn->con_handle); 7778 hci_emit_event(event, sizeof(event), 1); 7779 } 7780 #endif 7781 7782 #ifdef ENABLE_BLE 7783 #ifdef ENABLE_LE_CENTRAL 7784 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){ 7785 uint8_t event[21]; 7786 event[0] = HCI_EVENT_LE_META; 7787 event[1] = sizeof(event) - 2u; 7788 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7789 event[3] = status; 7790 little_endian_store_16(event, 4, con_handle); 7791 event[6] = 0; // TODO: role 7792 event[7] = address_type; 7793 reverse_bd_addr(address, &event[8]); 7794 little_endian_store_16(event, 14, 0); // interval 7795 little_endian_store_16(event, 16, 0); // latency 7796 little_endian_store_16(event, 18, 0); // supervision timeout 7797 event[20] = 0; // master clock accuracy 7798 hci_emit_event(event, sizeof(event), 1); 7799 } 7800 #endif 7801 #endif 7802 7803 static void hci_emit_transport_packet_sent(void){ 7804 // notify upper stack that it might be possible to send again 7805 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7806 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7807 } 7808 7809 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7810 uint8_t event[6]; 7811 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7812 event[1] = sizeof(event) - 2u; 7813 event[2] = 0; // status = OK 7814 little_endian_store_16(event, 3, con_handle); 7815 event[5] = reason; 7816 hci_emit_event(event, sizeof(event), 1); 7817 } 7818 7819 static void hci_emit_nr_connections_changed(void){ 7820 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7821 uint8_t event[3]; 7822 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7823 event[1] = sizeof(event) - 2u; 7824 event[2] = nr_hci_connections(); 7825 hci_emit_event(event, sizeof(event), 1); 7826 } 7827 7828 static void hci_emit_hci_open_failed(void){ 7829 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7830 uint8_t event[2]; 7831 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7832 event[1] = sizeof(event) - 2u; 7833 hci_emit_event(event, sizeof(event), 1); 7834 } 7835 7836 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7837 log_info("hci_emit_dedicated_bonding_result %u ", status); 7838 uint8_t event[9]; 7839 int pos = 0; 7840 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7841 event[pos++] = sizeof(event) - 2u; 7842 event[pos++] = status; 7843 reverse_bd_addr(address, &event[pos]); 7844 hci_emit_event(event, sizeof(event), 1); 7845 } 7846 7847 7848 #ifdef ENABLE_CLASSIC 7849 7850 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7851 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7852 uint8_t event[5]; 7853 int pos = 0; 7854 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7855 event[pos++] = sizeof(event) - 2; 7856 little_endian_store_16(event, 2, con_handle); 7857 pos += 2; 7858 event[pos++] = level; 7859 hci_emit_event(event, sizeof(event), 1); 7860 } 7861 7862 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7863 if (!connection) return LEVEL_0; 7864 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7865 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7866 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7867 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7868 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7869 // LEVEL 4 always requires 128 bit encrytion key size 7870 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7871 security_level = LEVEL_3; 7872 } 7873 return security_level; 7874 } 7875 7876 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7877 uint8_t event[4]; 7878 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7879 event[1] = sizeof(event) - 2; 7880 event[2] = discoverable; 7881 event[3] = connectable; 7882 hci_emit_event(event, sizeof(event), 1); 7883 } 7884 7885 // query if remote side supports eSCO 7886 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7887 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7888 if (!connection) return false; 7889 return (connection->remote_supported_features[0] & 1) != 0; 7890 } 7891 7892 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 7893 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7894 if (!connection) return 0; 7895 return connection->remote_supported_sco_packets; 7896 } 7897 7898 static bool hci_ssp_supported(hci_connection_t * connection){ 7899 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7900 return (connection->bonding_flags & mask) == mask; 7901 } 7902 7903 // query if remote side supports SSP 7904 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7905 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7906 if (!connection) return false; 7907 return hci_ssp_supported(connection) ? 1 : 0; 7908 } 7909 7910 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7911 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7912 } 7913 7914 /** 7915 * Check if remote supported features query has completed 7916 */ 7917 bool hci_remote_features_available(hci_con_handle_t handle){ 7918 hci_connection_t * connection = hci_connection_for_handle(handle); 7919 if (!connection) return false; 7920 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7921 } 7922 7923 /** 7924 * Trigger remote supported features query 7925 */ 7926 7927 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7928 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7929 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7930 } 7931 } 7932 7933 void hci_remote_features_query(hci_con_handle_t con_handle){ 7934 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7935 if (!connection) return; 7936 hci_trigger_remote_features_for_connection(connection); 7937 hci_run(); 7938 } 7939 7940 // GAP API 7941 /** 7942 * @bbrief enable/disable bonding. default is enabled 7943 * @praram enabled 7944 */ 7945 void gap_set_bondable_mode(int enable){ 7946 hci_stack->bondable = enable ? 1 : 0; 7947 } 7948 /** 7949 * @brief Get bondable mode. 7950 * @return 1 if bondable 7951 */ 7952 int gap_get_bondable_mode(void){ 7953 return hci_stack->bondable; 7954 } 7955 7956 /** 7957 * @brief map link keys to security levels 7958 */ 7959 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7960 switch (link_key_type){ 7961 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7962 return LEVEL_4; 7963 case COMBINATION_KEY: 7964 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7965 return LEVEL_3; 7966 default: 7967 return LEVEL_2; 7968 } 7969 } 7970 7971 /** 7972 * @brief map link keys to secure connection yes/no 7973 */ 7974 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7975 switch (link_key_type){ 7976 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7977 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7978 return true; 7979 default: 7980 return false; 7981 } 7982 } 7983 7984 /** 7985 * @brief map link keys to authenticated 7986 */ 7987 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7988 switch (link_key_type){ 7989 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7990 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7991 return true; 7992 default: 7993 return false; 7994 } 7995 } 7996 7997 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7998 log_info("gap_mitm_protection_required_for_security_level %u", level); 7999 return level > LEVEL_2; 8000 } 8001 8002 /** 8003 * @brief get current security level 8004 */ 8005 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8006 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8007 if (!connection) return LEVEL_0; 8008 return gap_security_level_for_connection(connection); 8009 } 8010 8011 /** 8012 * @brief request connection to device to 8013 * @result GAP_AUTHENTICATION_RESULT 8014 */ 8015 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8016 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8017 if (!connection){ 8018 hci_emit_security_level(con_handle, LEVEL_0); 8019 return; 8020 } 8021 8022 btstack_assert(hci_is_le_connection(connection) == false); 8023 8024 // 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) 8025 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8026 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8027 requested_level = LEVEL_4; 8028 } 8029 8030 gap_security_level_t current_level = gap_security_level(con_handle); 8031 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8032 requested_level, connection->requested_security_level, current_level); 8033 8034 // authentication active if authentication request was sent or planned level > 0 8035 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8036 if (authentication_active){ 8037 // authentication already active 8038 if (connection->requested_security_level < requested_level){ 8039 // increase requested level as new level is higher 8040 // TODO: handle re-authentication when done 8041 connection->requested_security_level = requested_level; 8042 } 8043 } else { 8044 // no request active, notify if security sufficient 8045 if (requested_level <= current_level){ 8046 hci_emit_security_level(con_handle, current_level); 8047 return; 8048 } 8049 8050 // store request 8051 connection->requested_security_level = requested_level; 8052 8053 // start to authenticate connection 8054 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8055 8056 // request remote features if not already active, also trigger hci_run 8057 hci_remote_features_query(con_handle); 8058 } 8059 } 8060 8061 /** 8062 * @brief start dedicated bonding with device. disconnect after bonding 8063 * @param device 8064 * @param request MITM protection 8065 * @result GAP_DEDICATED_BONDING_COMPLETE 8066 */ 8067 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8068 8069 // create connection state machine 8070 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8071 8072 if (!connection){ 8073 return BTSTACK_MEMORY_ALLOC_FAILED; 8074 } 8075 8076 // delete link key 8077 gap_drop_link_key_for_bd_addr(device); 8078 8079 // configure LEVEL_2/3, dedicated bonding 8080 connection->state = SEND_CREATE_CONNECTION; 8081 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8082 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8083 connection->bonding_flags = BONDING_DEDICATED; 8084 8085 hci_run(); 8086 8087 return 0; 8088 } 8089 8090 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8091 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8092 if (connection == NULL){ 8093 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8094 } 8095 if (defer){ 8096 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8097 } else { 8098 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8099 // trigger disconnect 8100 hci_run(); 8101 } 8102 return ERROR_CODE_SUCCESS; 8103 } 8104 8105 void gap_set_local_name(const char * local_name){ 8106 hci_stack->local_name = local_name; 8107 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8108 // also update EIR if not set by user 8109 if (hci_stack->eir_data == NULL){ 8110 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8111 } 8112 hci_run(); 8113 } 8114 #endif 8115 8116 8117 #ifdef ENABLE_BLE 8118 8119 #ifdef ENABLE_LE_CENTRAL 8120 void gap_start_scan(void){ 8121 hci_stack->le_scanning_enabled = true; 8122 hci_run(); 8123 } 8124 8125 void gap_stop_scan(void){ 8126 hci_stack->le_scanning_enabled = false; 8127 hci_run(); 8128 } 8129 8130 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8131 hci_stack->le_scan_type = scan_type; 8132 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8133 hci_stack->le_scan_interval = scan_interval; 8134 hci_stack->le_scan_window = scan_window; 8135 hci_stack->le_scanning_param_update = true; 8136 hci_run(); 8137 } 8138 8139 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8140 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8141 } 8142 8143 void gap_set_scan_duplicate_filter(bool enabled){ 8144 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8145 } 8146 8147 void gap_set_scan_phys(uint8_t phys){ 8148 // LE Coded and LE 1M PHY 8149 hci_stack->le_scan_phys = phys & 0x05; 8150 } 8151 8152 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8153 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8154 if (!conn){ 8155 // disallow if le connection is already outgoing 8156 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8157 log_error("le connection already active"); 8158 return ERROR_CODE_COMMAND_DISALLOWED; 8159 } 8160 8161 log_info("gap_connect: no connection exists yet, creating context"); 8162 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8163 if (!conn){ 8164 // notify client that alloc failed 8165 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8166 log_info("gap_connect: failed to alloc hci_connection_t"); 8167 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8168 } 8169 8170 // set le connecting state 8171 if (hci_is_le_connection_type(addr_type)){ 8172 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8173 } 8174 8175 conn->state = SEND_CREATE_CONNECTION; 8176 log_info("gap_connect: send create connection next"); 8177 hci_run(); 8178 return ERROR_CODE_SUCCESS; 8179 } 8180 8181 if (!hci_is_le_connection(conn) || 8182 (conn->state == SEND_CREATE_CONNECTION) || 8183 (conn->state == SENT_CREATE_CONNECTION)) { 8184 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8185 log_error("gap_connect: classic connection or connect is already being created"); 8186 return GATT_CLIENT_IN_WRONG_STATE; 8187 } 8188 8189 // check if connection was just disconnected 8190 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8191 log_info("gap_connect: send create connection (again)"); 8192 conn->state = SEND_CREATE_CONNECTION; 8193 hci_run(); 8194 return ERROR_CODE_SUCCESS; 8195 } 8196 8197 log_info("gap_connect: context exists with state %u", conn->state); 8198 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8199 hci_run(); 8200 return ERROR_CODE_SUCCESS; 8201 } 8202 8203 // @assumption: only a single outgoing LE Connection exists 8204 static hci_connection_t * gap_get_outgoing_connection(void){ 8205 btstack_linked_item_t *it; 8206 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8207 hci_connection_t * conn = (hci_connection_t *) it; 8208 if (!hci_is_le_connection(conn)) continue; 8209 switch (conn->state){ 8210 case SEND_CREATE_CONNECTION: 8211 case SENT_CREATE_CONNECTION: 8212 return conn; 8213 default: 8214 break; 8215 }; 8216 } 8217 return NULL; 8218 } 8219 8220 uint8_t gap_connect_cancel(void){ 8221 hci_connection_t * conn; 8222 switch (hci_stack->le_connecting_request){ 8223 case LE_CONNECTING_IDLE: 8224 break; 8225 case LE_CONNECTING_WHITELIST: 8226 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8227 hci_run(); 8228 break; 8229 case LE_CONNECTING_DIRECT: 8230 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8231 conn = gap_get_outgoing_connection(); 8232 if (conn == NULL){ 8233 hci_run(); 8234 } else { 8235 switch (conn->state){ 8236 case SEND_CREATE_CONNECTION: 8237 // skip sending create connection and emit event instead 8238 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8239 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8240 btstack_memory_hci_connection_free( conn ); 8241 break; 8242 case SENT_CREATE_CONNECTION: 8243 // let hci_run_general_gap_le cancel outgoing connection 8244 hci_run(); 8245 break; 8246 default: 8247 break; 8248 } 8249 } 8250 break; 8251 default: 8252 btstack_unreachable(); 8253 break; 8254 } 8255 return ERROR_CODE_SUCCESS; 8256 } 8257 8258 /** 8259 * @brief Set connection parameters for outgoing connections 8260 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8261 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8262 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8263 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8264 * @param conn_latency, default: 4 8265 * @param supervision_timeout (unit: 10ms), default: 720 ms 8266 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8267 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8268 */ 8269 8270 void gap_set_connection_phys(uint8_t phys){ 8271 // LE Coded, LE 1M, LE 2M PHY 8272 hci_stack->le_connection_phys = phys & 7; 8273 } 8274 8275 #endif 8276 8277 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8278 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8279 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8280 hci_stack->le_connection_scan_interval = conn_scan_interval; 8281 hci_stack->le_connection_scan_window = conn_scan_window; 8282 hci_stack->le_connection_interval_min = conn_interval_min; 8283 hci_stack->le_connection_interval_max = conn_interval_max; 8284 hci_stack->le_connection_latency = conn_latency; 8285 hci_stack->le_supervision_timeout = supervision_timeout; 8286 hci_stack->le_minimum_ce_length = min_ce_length; 8287 hci_stack->le_maximum_ce_length = max_ce_length; 8288 } 8289 8290 /** 8291 * @brief Updates the connection parameters for a given LE connection 8292 * @param handle 8293 * @param conn_interval_min (unit: 1.25ms) 8294 * @param conn_interval_max (unit: 1.25ms) 8295 * @param conn_latency 8296 * @param supervision_timeout (unit: 10ms) 8297 * @return 0 if ok 8298 */ 8299 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8300 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8301 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8302 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8303 connection->le_conn_interval_min = conn_interval_min; 8304 connection->le_conn_interval_max = conn_interval_max; 8305 connection->le_conn_latency = conn_latency; 8306 connection->le_supervision_timeout = supervision_timeout; 8307 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8308 hci_run(); 8309 return 0; 8310 } 8311 8312 /** 8313 * @brief Request an update of the connection parameter for a given LE connection 8314 * @param handle 8315 * @param conn_interval_min (unit: 1.25ms) 8316 * @param conn_interval_max (unit: 1.25ms) 8317 * @param conn_latency 8318 * @param supervision_timeout (unit: 10ms) 8319 * @return 0 if ok 8320 */ 8321 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8322 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8323 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8324 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8325 connection->le_conn_interval_min = conn_interval_min; 8326 connection->le_conn_interval_max = conn_interval_max; 8327 connection->le_conn_latency = conn_latency; 8328 connection->le_supervision_timeout = supervision_timeout; 8329 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8330 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8331 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8332 return 0; 8333 } 8334 8335 #ifdef ENABLE_LE_PERIPHERAL 8336 8337 /** 8338 * @brief Set Advertisement Data 8339 * @param advertising_data_length 8340 * @param advertising_data (max 31 octets) 8341 * @note data is not copied, pointer has to stay valid 8342 */ 8343 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8344 hci_stack->le_advertisements_data_len = advertising_data_length; 8345 hci_stack->le_advertisements_data = advertising_data; 8346 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8347 hci_run(); 8348 } 8349 8350 /** 8351 * @brief Set Scan Response Data 8352 * @param advertising_data_length 8353 * @param advertising_data (max 31 octets) 8354 * @note data is not copied, pointer has to stay valid 8355 */ 8356 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8357 hci_stack->le_scan_response_data_len = scan_response_data_length; 8358 hci_stack->le_scan_response_data = scan_response_data; 8359 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8360 hci_run(); 8361 } 8362 8363 /** 8364 * @brief Set Advertisement Parameters 8365 * @param adv_int_min 8366 * @param adv_int_max 8367 * @param adv_type 8368 * @param direct_address_type 8369 * @param direct_address 8370 * @param channel_map 8371 * @param filter_policy 8372 * 8373 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8374 */ 8375 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8376 uint8_t direct_address_typ, bd_addr_t direct_address, 8377 uint8_t channel_map, uint8_t filter_policy) { 8378 8379 hci_stack->le_advertisements_interval_min = adv_int_min; 8380 hci_stack->le_advertisements_interval_max = adv_int_max; 8381 hci_stack->le_advertisements_type = adv_type; 8382 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8383 hci_stack->le_advertisements_channel_map = channel_map; 8384 hci_stack->le_advertisements_filter_policy = filter_policy; 8385 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8386 6); 8387 8388 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8389 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8390 hci_run(); 8391 } 8392 8393 /** 8394 * @brief Enable/Disable Advertisements 8395 * @param enabled 8396 */ 8397 void gap_advertisements_enable(int enabled){ 8398 if (enabled == 0){ 8399 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8400 } else { 8401 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8402 } 8403 hci_update_advertisements_enabled_for_current_roles(); 8404 hci_run(); 8405 } 8406 8407 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8408 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8409 btstack_linked_list_iterator_t it; 8410 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8411 while (btstack_linked_list_iterator_has_next(&it)){ 8412 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8413 if ( item->advertising_handle == advertising_handle ) { 8414 return item; 8415 } 8416 } 8417 return NULL; 8418 } 8419 8420 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8421 // find free advertisement handle 8422 uint8_t advertisement_handle; 8423 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8424 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8425 } 8426 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8427 // clear 8428 memset(storage, 0, sizeof(le_advertising_set_t)); 8429 // copy params 8430 storage->advertising_handle = advertisement_handle; 8431 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8432 // add to list 8433 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8434 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8435 *out_advertising_handle = advertisement_handle; 8436 // set tasks and start 8437 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8438 hci_run(); 8439 return ERROR_CODE_SUCCESS; 8440 } 8441 8442 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8443 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8444 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8445 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8446 // set tasks and start 8447 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8448 hci_run(); 8449 return ERROR_CODE_SUCCESS; 8450 } 8451 8452 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8453 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8454 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8455 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8456 return ERROR_CODE_SUCCESS; 8457 } 8458 8459 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8460 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8461 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8462 memcpy(advertising_set->random_address, random_address, 6); 8463 // set tasks and start 8464 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8465 hci_run(); 8466 return ERROR_CODE_SUCCESS; 8467 } 8468 8469 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8470 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8471 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8472 advertising_set->adv_data = advertising_data; 8473 advertising_set->adv_data_len = advertising_data_length; 8474 // set tasks and start 8475 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8476 hci_run(); 8477 return ERROR_CODE_SUCCESS; 8478 } 8479 8480 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){ 8481 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8482 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8483 advertising_set->scan_data = scan_response_data; 8484 advertising_set->scan_data_len = scan_response_data_length; 8485 // set tasks and start 8486 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8487 hci_run(); 8488 return ERROR_CODE_SUCCESS; 8489 } 8490 8491 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8492 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8493 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8494 advertising_set->enable_timeout = timeout; 8495 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8496 // set tasks and start 8497 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8498 hci_run(); 8499 return ERROR_CODE_SUCCESS; 8500 } 8501 8502 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8503 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8504 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8505 // set tasks and start 8506 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8507 hci_run(); 8508 return ERROR_CODE_SUCCESS; 8509 } 8510 8511 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8512 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8513 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8514 // set tasks and start 8515 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8516 hci_run(); 8517 return ERROR_CODE_SUCCESS; 8518 } 8519 8520 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8521 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8522 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8523 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8524 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8525 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8526 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8527 // set tasks and start 8528 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8529 hci_run(); 8530 return ERROR_CODE_SUCCESS; 8531 } 8532 8533 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8534 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8535 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8536 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8537 return ERROR_CODE_SUCCESS; 8538 } 8539 8540 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8541 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8542 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8543 advertising_set->periodic_data = periodic_data; 8544 advertising_set->periodic_data_len = periodic_data_length; 8545 // set tasks and start 8546 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8547 hci_run(); 8548 return ERROR_CODE_SUCCESS; 8549 } 8550 8551 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8552 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8553 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8554 // set tasks and start 8555 advertising_set->periodic_include_adi = include_adi; 8556 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8557 hci_run(); 8558 return ERROR_CODE_SUCCESS; 8559 } 8560 8561 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8562 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8563 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8564 // set tasks and start 8565 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8566 hci_run(); 8567 return ERROR_CODE_SUCCESS; 8568 } 8569 8570 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8571 hci_stack->le_past_mode = mode; 8572 hci_stack->le_past_skip = skip; 8573 hci_stack->le_past_sync_timeout = sync_timeout; 8574 hci_stack->le_past_cte_type = cte_type; 8575 hci_stack->le_past_set_default_params = true; 8576 hci_run(); 8577 return ERROR_CODE_SUCCESS; 8578 } 8579 8580 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8581 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8582 if (hci_connection == NULL){ 8583 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8584 } 8585 hci_connection->le_past_sync_handle = sync_handle; 8586 hci_connection->le_past_service_data = service_data; 8587 hci_run(); 8588 return ERROR_CODE_SUCCESS; 8589 } 8590 8591 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8592 8593 #endif 8594 8595 #endif 8596 8597 void hci_le_set_own_address_type(uint8_t own_address_type){ 8598 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8599 if (own_address_type == hci_stack->le_own_addr_type) return; 8600 hci_stack->le_own_addr_type = own_address_type; 8601 8602 #ifdef ENABLE_LE_PERIPHERAL 8603 // update advertisement parameters, too 8604 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8605 hci_run(); 8606 #endif 8607 #ifdef ENABLE_LE_CENTRAL 8608 // note: we don't update scan parameters or modify ongoing connection attempts 8609 #endif 8610 } 8611 8612 void hci_le_random_address_set(const bd_addr_t random_address){ 8613 memcpy(hci_stack->le_random_address, random_address, 6); 8614 hci_stack->le_random_address_set = true; 8615 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8616 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8617 if (hci_extended_advertising_supported()){ 8618 // force advertising set creation for LE Set Advertising Set Random Address 8619 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8620 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8621 } 8622 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8623 } 8624 #endif 8625 hci_run(); 8626 } 8627 8628 #endif 8629 8630 uint8_t gap_disconnect(hci_con_handle_t handle){ 8631 hci_connection_t * conn = hci_connection_for_handle(handle); 8632 if (!conn){ 8633 hci_emit_disconnection_complete(handle, 0); 8634 return 0; 8635 } 8636 // ignore if already disconnected 8637 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8638 return 0; 8639 } 8640 conn->state = SEND_DISCONNECT; 8641 hci_run(); 8642 return 0; 8643 } 8644 8645 int gap_read_rssi(hci_con_handle_t con_handle){ 8646 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8647 if (hci_connection == NULL) return 0; 8648 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8649 hci_run(); 8650 return 1; 8651 } 8652 8653 /** 8654 * @brief Get connection type 8655 * @param con_handle 8656 * @result connection_type 8657 */ 8658 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8659 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8660 if (!conn) return GAP_CONNECTION_INVALID; 8661 switch (conn->address_type){ 8662 case BD_ADDR_TYPE_LE_PUBLIC: 8663 case BD_ADDR_TYPE_LE_RANDOM: 8664 return GAP_CONNECTION_LE; 8665 case BD_ADDR_TYPE_SCO: 8666 return GAP_CONNECTION_SCO; 8667 case BD_ADDR_TYPE_ACL: 8668 return GAP_CONNECTION_ACL; 8669 default: 8670 return GAP_CONNECTION_INVALID; 8671 } 8672 } 8673 8674 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8675 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8676 if (!conn) return HCI_ROLE_INVALID; 8677 return (hci_role_t) conn->role; 8678 } 8679 8680 8681 #ifdef ENABLE_CLASSIC 8682 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8683 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8684 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8685 conn->request_role = role; 8686 hci_run(); 8687 return ERROR_CODE_SUCCESS; 8688 } 8689 #endif 8690 8691 #ifdef ENABLE_BLE 8692 8693 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint16_t phy_options){ 8694 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8695 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8696 8697 conn->le_phy_update_all_phys = all_phys; 8698 conn->le_phy_update_tx_phys = tx_phys; 8699 conn->le_phy_update_rx_phys = rx_phys; 8700 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8701 8702 hci_run(); 8703 8704 return 0; 8705 } 8706 8707 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8708 // check if already in list 8709 btstack_linked_list_iterator_t it; 8710 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8711 while (btstack_linked_list_iterator_has_next(&it)) { 8712 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8713 if (entry->address_type != address_type) { 8714 continue; 8715 } 8716 if (memcmp(entry->address, address, 6) != 0) { 8717 continue; 8718 } 8719 8720 // if already on controller: 8721 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8722 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8723 // drop remove request 8724 entry->state = LE_WHITELIST_ON_CONTROLLER; 8725 return ERROR_CODE_SUCCESS; 8726 } else { 8727 // disallow as already on controller 8728 return ERROR_CODE_COMMAND_DISALLOWED; 8729 } 8730 } 8731 8732 // assume scheduled to add 8733 return ERROR_CODE_COMMAND_DISALLOWED; 8734 } 8735 8736 // alloc and add to list 8737 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8738 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8739 entry->address_type = address_type; 8740 (void)memcpy(entry->address, address, 6); 8741 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8742 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8743 return ERROR_CODE_SUCCESS; 8744 } 8745 8746 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8747 btstack_linked_list_iterator_t it; 8748 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8749 while (btstack_linked_list_iterator_has_next(&it)){ 8750 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8751 if (entry->address_type != address_type) { 8752 continue; 8753 } 8754 if (memcmp(entry->address, address, 6) != 0) { 8755 continue; 8756 } 8757 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8758 // remove from controller if already present 8759 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8760 } else { 8761 // directly remove entry from whitelist 8762 btstack_linked_list_iterator_remove(&it); 8763 btstack_memory_whitelist_entry_free(entry); 8764 } 8765 return ERROR_CODE_SUCCESS; 8766 } 8767 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8768 } 8769 8770 static void hci_whitelist_clear(void){ 8771 btstack_linked_list_iterator_t it; 8772 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8773 while (btstack_linked_list_iterator_has_next(&it)){ 8774 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8775 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8776 // remove from controller if already present 8777 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8778 continue; 8779 } 8780 // directly remove entry from whitelist 8781 btstack_linked_list_iterator_remove(&it); 8782 btstack_memory_whitelist_entry_free(entry); 8783 } 8784 } 8785 8786 /** 8787 * @brief Clear Whitelist 8788 * @return 0 if ok 8789 */ 8790 uint8_t gap_whitelist_clear(void){ 8791 hci_whitelist_clear(); 8792 hci_run(); 8793 return ERROR_CODE_SUCCESS; 8794 } 8795 8796 /** 8797 * @brief Add Device to Whitelist 8798 * @param address_typ 8799 * @param address 8800 * @return 0 if ok 8801 */ 8802 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8803 uint8_t status = hci_whitelist_add(address_type, address); 8804 if (status){ 8805 return status; 8806 } 8807 hci_run(); 8808 return ERROR_CODE_SUCCESS; 8809 } 8810 8811 /** 8812 * @brief Remove Device from Whitelist 8813 * @param address_typ 8814 * @param address 8815 * @return 0 if ok 8816 */ 8817 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8818 uint8_t status = hci_whitelist_remove(address_type, address); 8819 if (status){ 8820 return status; 8821 } 8822 hci_run(); 8823 return ERROR_CODE_SUCCESS; 8824 } 8825 8826 #ifdef ENABLE_LE_CENTRAL 8827 /** 8828 * @brief Connect with Whitelist 8829 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8830 * @return - if ok 8831 */ 8832 uint8_t gap_connect_with_whitelist(void){ 8833 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8834 return ERROR_CODE_COMMAND_DISALLOWED; 8835 } 8836 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8837 hci_run(); 8838 return ERROR_CODE_SUCCESS; 8839 } 8840 8841 /** 8842 * @brief Auto Connection Establishment - Start Connecting to device 8843 * @param address_typ 8844 * @param address 8845 * @return 0 if ok 8846 */ 8847 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8848 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8849 return ERROR_CODE_COMMAND_DISALLOWED; 8850 } 8851 8852 uint8_t status = hci_whitelist_add(address_type, address); 8853 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8854 return status; 8855 } 8856 8857 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8858 8859 hci_run(); 8860 return ERROR_CODE_SUCCESS; 8861 } 8862 8863 /** 8864 * @brief Auto Connection Establishment - Stop Connecting to device 8865 * @param address_typ 8866 * @param address 8867 * @return 0 if ok 8868 */ 8869 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8870 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8871 return ERROR_CODE_COMMAND_DISALLOWED; 8872 } 8873 8874 hci_whitelist_remove(address_type, address); 8875 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8876 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8877 } 8878 hci_run(); 8879 return 0; 8880 } 8881 8882 /** 8883 * @brief Auto Connection Establishment - Stop everything 8884 * @note Convenience function to stop all active auto connection attempts 8885 */ 8886 uint8_t gap_auto_connection_stop_all(void){ 8887 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8888 return ERROR_CODE_COMMAND_DISALLOWED; 8889 } 8890 hci_whitelist_clear(); 8891 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8892 hci_run(); 8893 return ERROR_CODE_SUCCESS; 8894 } 8895 8896 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8897 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8898 if (!conn) return 0; 8899 return conn->le_connection_interval; 8900 } 8901 #endif 8902 #endif 8903 8904 #ifdef ENABLE_CLASSIC 8905 /** 8906 * @brief Set Extended Inquiry Response data 8907 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8908 * @note has to be done before stack starts up 8909 */ 8910 void gap_set_extended_inquiry_response(const uint8_t * data){ 8911 hci_stack->eir_data = data; 8912 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8913 hci_run(); 8914 } 8915 8916 /** 8917 * @brief Start GAP Classic Inquiry 8918 * @param duration in 1.28s units 8919 * @return 0 if ok 8920 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8921 */ 8922 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8923 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8924 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8925 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8926 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8927 } 8928 hci_stack->inquiry_state = duration_in_1280ms_units; 8929 hci_stack->inquiry_max_period_length = 0; 8930 hci_stack->inquiry_min_period_length = 0; 8931 hci_run(); 8932 return 0; 8933 } 8934 8935 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8936 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8937 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8938 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8939 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8940 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8941 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8942 8943 hci_stack->inquiry_state = duration; 8944 hci_stack->inquiry_max_period_length = max_period_length; 8945 hci_stack->inquiry_min_period_length = min_period_length; 8946 hci_run(); 8947 return 0; 8948 } 8949 8950 /** 8951 * @brief Stop GAP Classic Inquiry 8952 * @return 0 if ok 8953 */ 8954 int gap_inquiry_stop(void){ 8955 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8956 // emit inquiry complete event, before it even started 8957 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8958 hci_emit_event(event, sizeof(event), 1); 8959 return 0; 8960 } 8961 switch (hci_stack->inquiry_state){ 8962 case GAP_INQUIRY_STATE_ACTIVE: 8963 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8964 hci_run(); 8965 return ERROR_CODE_SUCCESS; 8966 case GAP_INQUIRY_STATE_PERIODIC: 8967 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8968 hci_run(); 8969 return ERROR_CODE_SUCCESS; 8970 default: 8971 return ERROR_CODE_COMMAND_DISALLOWED; 8972 } 8973 } 8974 8975 void gap_inquiry_set_lap(uint32_t lap){ 8976 hci_stack->inquiry_lap = lap; 8977 } 8978 8979 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8980 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8981 hci_stack->inquiry_scan_window = inquiry_scan_window; 8982 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8983 hci_run(); 8984 } 8985 8986 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 8987 { 8988 hci_stack->inquiry_tx_power_level = tx_power; 8989 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 8990 hci_run(); 8991 } 8992 8993 8994 /** 8995 * @brief Remote Name Request 8996 * @param addr 8997 * @param page_scan_repetition_mode 8998 * @param clock_offset only used when bit 15 is set 8999 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9000 */ 9001 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9002 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9003 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9004 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9005 hci_stack->remote_name_clock_offset = clock_offset; 9006 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9007 hci_run(); 9008 return 0; 9009 } 9010 9011 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9012 hci_stack->gap_pairing_state = state; 9013 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9014 hci_run(); 9015 return 0; 9016 } 9017 9018 /** 9019 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9020 * @param addr 9021 * @param pin_data 9022 * @param pin_len 9023 * @return 0 if ok 9024 */ 9025 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9026 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9027 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9028 hci_stack->gap_pairing_pin_len = pin_len; 9029 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9030 } 9031 9032 /** 9033 * @brief Legacy Pairing Pin Code Response 9034 * @param addr 9035 * @param pin 9036 * @return 0 if ok 9037 */ 9038 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9039 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9040 } 9041 9042 /** 9043 * @brief Abort Legacy Pairing 9044 * @param addr 9045 * @param pin 9046 * @return 0 if ok 9047 */ 9048 int gap_pin_code_negative(bd_addr_t addr){ 9049 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9050 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9051 } 9052 9053 /** 9054 * @brief SSP Passkey Response 9055 * @param addr 9056 * @param passkey 9057 * @return 0 if ok 9058 */ 9059 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9060 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9061 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9062 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9063 } 9064 9065 /** 9066 * @brief Abort SSP Passkey Entry/Pairing 9067 * @param addr 9068 * @param pin 9069 * @return 0 if ok 9070 */ 9071 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9072 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9073 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9074 } 9075 9076 /** 9077 * @brief Accept SSP Numeric Comparison 9078 * @param addr 9079 * @param passkey 9080 * @return 0 if ok 9081 */ 9082 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9083 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9084 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9085 } 9086 9087 /** 9088 * @brief Abort SSP Numeric Comparison/Pairing 9089 * @param addr 9090 * @param pin 9091 * @return 0 if ok 9092 */ 9093 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9094 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9095 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9096 } 9097 9098 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9099 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9100 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9101 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9102 connectionSetAuthenticationFlags(conn, flag); 9103 hci_run(); 9104 return ERROR_CODE_SUCCESS; 9105 } 9106 #endif 9107 9108 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9109 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9110 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9111 } 9112 9113 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9114 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9115 } 9116 #endif 9117 9118 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9119 /** 9120 * @brief Report Remote OOB Data 9121 * @param bd_addr 9122 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9123 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9124 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9125 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9126 */ 9127 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){ 9128 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9129 if (connection == NULL) { 9130 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9131 } 9132 connection->classic_oob_c_192 = c_192; 9133 connection->classic_oob_r_192 = r_192; 9134 9135 // ignore P-256 if not supported by us 9136 if (hci_stack->secure_connections_active){ 9137 connection->classic_oob_c_256 = c_256; 9138 connection->classic_oob_r_256 = r_256; 9139 } 9140 9141 return ERROR_CODE_SUCCESS; 9142 } 9143 /** 9144 * @brief Generate new OOB data 9145 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9146 */ 9147 void gap_ssp_generate_oob_data(void){ 9148 hci_stack->classic_read_local_oob_data = true; 9149 hci_run(); 9150 } 9151 9152 #endif 9153 9154 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9155 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9156 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9157 if (connection == NULL) { 9158 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9159 } 9160 9161 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9162 connection->link_key_type = type; 9163 9164 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9165 } 9166 9167 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9168 /** 9169 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9170 * @param inquiry_mode see bluetooth_defines.h 9171 */ 9172 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9173 hci_stack->inquiry_mode = inquiry_mode; 9174 } 9175 9176 /** 9177 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9178 */ 9179 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9180 hci_stack->sco_voice_setting = voice_setting; 9181 } 9182 9183 /** 9184 * @brief Get SCO Voice Setting 9185 * @return current voice setting 9186 */ 9187 uint16_t hci_get_sco_voice_setting(void){ 9188 return hci_stack->sco_voice_setting; 9189 } 9190 9191 static int hci_have_usb_transport(void){ 9192 if (!hci_stack->hci_transport) return 0; 9193 const char * transport_name = hci_stack->hci_transport->name; 9194 if (!transport_name) return 0; 9195 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9196 } 9197 9198 /** @brief Get SCO packet length for current SCO Voice setting 9199 * @note Using SCO packets of the exact length is required for USB transfer 9200 * @return Length of SCO packets in bytes (not audio frames) 9201 */ 9202 uint16_t hci_get_sco_packet_length(void){ 9203 uint16_t sco_packet_length = 0; 9204 9205 #ifdef ENABLE_SCO_OVER_HCI 9206 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9207 int multiplier; 9208 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9209 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9210 multiplier = 2; 9211 } else { 9212 multiplier = 1; 9213 } 9214 9215 9216 if (hci_have_usb_transport()){ 9217 // see Core Spec for H2 USB Transfer. 9218 // 3 byte SCO header + 24 bytes per connection 9219 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 9220 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 9221 } else { 9222 // 3 byte SCO header + SCO packet size over the air (60 bytes) 9223 sco_packet_length = 3 + 60 * multiplier; 9224 // assert that it still fits inside an SCO buffer 9225 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9226 sco_packet_length = 3 + 60; 9227 } 9228 } 9229 #endif 9230 9231 #ifdef HAVE_SCO_TRANSPORT 9232 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9233 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9234 sco_packet_length = 3 + 60 * multiplier; 9235 #endif 9236 return sco_packet_length; 9237 } 9238 9239 /** 9240 * @brief Sets the master/slave policy 9241 * @param policy (0: attempt to become master, 1: let connecting device decide) 9242 */ 9243 void hci_set_master_slave_policy(uint8_t policy){ 9244 hci_stack->master_slave_policy = policy; 9245 } 9246 9247 #endif 9248 9249 HCI_STATE hci_get_state(void){ 9250 return hci_stack->state; 9251 } 9252 9253 #ifdef ENABLE_CLASSIC 9254 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9255 hci_stack->gap_classic_accept_callback = accept_callback; 9256 } 9257 #endif 9258 9259 /** 9260 * @brief Set callback for Bluetooth Hardware Error 9261 */ 9262 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9263 hci_stack->hardware_error_callback = fn; 9264 } 9265 9266 void hci_disconnect_all(void){ 9267 btstack_linked_list_iterator_t it; 9268 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9269 while (btstack_linked_list_iterator_has_next(&it)){ 9270 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9271 if (con->state == SENT_DISCONNECT) continue; 9272 con->state = SEND_DISCONNECT; 9273 } 9274 hci_run(); 9275 } 9276 9277 uint16_t hci_get_manufacturer(void){ 9278 return hci_stack->manufacturer; 9279 } 9280 9281 #ifdef ENABLE_BLE 9282 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9283 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9284 if (!hci_con) return NULL; 9285 return &hci_con->sm_connection; 9286 } 9287 9288 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9289 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9290 #endif 9291 9292 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9293 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9294 if (hci_connection == NULL) return 0; 9295 if (hci_is_le_connection(hci_connection)){ 9296 #ifdef ENABLE_BLE 9297 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9298 if (sm_conn->sm_connection_encrypted) { 9299 return sm_conn->sm_actual_encryption_key_size; 9300 } 9301 #endif 9302 } else { 9303 #ifdef ENABLE_CLASSIC 9304 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9305 return hci_connection->encryption_key_size; 9306 } 9307 #endif 9308 } 9309 return 0; 9310 } 9311 9312 bool gap_authenticated(hci_con_handle_t con_handle){ 9313 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9314 if (hci_connection == NULL) return false; 9315 9316 switch (hci_connection->address_type){ 9317 #ifdef ENABLE_BLE 9318 case BD_ADDR_TYPE_LE_PUBLIC: 9319 case BD_ADDR_TYPE_LE_RANDOM: 9320 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9321 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9322 #endif 9323 #ifdef ENABLE_CLASSIC 9324 case BD_ADDR_TYPE_SCO: 9325 case BD_ADDR_TYPE_ACL: 9326 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9327 #endif 9328 default: 9329 return false; 9330 } 9331 } 9332 9333 bool gap_secure_connection(hci_con_handle_t con_handle){ 9334 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9335 if (hci_connection == NULL) return 0; 9336 9337 switch (hci_connection->address_type){ 9338 #ifdef ENABLE_BLE 9339 case BD_ADDR_TYPE_LE_PUBLIC: 9340 case BD_ADDR_TYPE_LE_RANDOM: 9341 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9342 return hci_connection->sm_connection.sm_connection_sc != 0; 9343 #endif 9344 #ifdef ENABLE_CLASSIC 9345 case BD_ADDR_TYPE_SCO: 9346 case BD_ADDR_TYPE_ACL: 9347 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9348 #endif 9349 default: 9350 return false; 9351 } 9352 } 9353 9354 bool gap_bonded(hci_con_handle_t con_handle){ 9355 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9356 if (hci_connection == NULL) return 0; 9357 9358 #ifdef ENABLE_CLASSIC 9359 link_key_t link_key; 9360 link_key_type_t link_key_type; 9361 #endif 9362 switch (hci_connection->address_type){ 9363 #ifdef ENABLE_BLE 9364 case BD_ADDR_TYPE_LE_PUBLIC: 9365 case BD_ADDR_TYPE_LE_RANDOM: 9366 return hci_connection->sm_connection.sm_le_db_index >= 0; 9367 #endif 9368 #ifdef ENABLE_CLASSIC 9369 case BD_ADDR_TYPE_SCO: 9370 case BD_ADDR_TYPE_ACL: 9371 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9372 #endif 9373 default: 9374 return false; 9375 } 9376 } 9377 9378 #ifdef ENABLE_BLE 9379 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9380 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9381 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9382 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9383 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9384 return sm_conn->sm_connection_authorization_state; 9385 } 9386 #endif 9387 9388 #ifdef ENABLE_CLASSIC 9389 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){ 9390 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9391 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9392 conn->sniff_min_interval = sniff_min_interval; 9393 conn->sniff_max_interval = sniff_max_interval; 9394 conn->sniff_attempt = sniff_attempt; 9395 conn->sniff_timeout = sniff_timeout; 9396 hci_run(); 9397 return 0; 9398 } 9399 9400 /** 9401 * @brief Exit Sniff mode 9402 * @param con_handle 9403 @ @return 0 if ok 9404 */ 9405 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9406 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9407 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9408 conn->sniff_min_interval = 0xffff; 9409 hci_run(); 9410 return 0; 9411 } 9412 9413 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){ 9414 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9415 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9416 conn->sniff_subrating_max_latency = max_latency; 9417 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9418 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9419 hci_run(); 9420 return ERROR_CODE_SUCCESS; 9421 } 9422 9423 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){ 9424 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9425 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9426 conn->qos_service_type = service_type; 9427 conn->qos_token_rate = token_rate; 9428 conn->qos_peak_bandwidth = peak_bandwidth; 9429 conn->qos_latency = latency; 9430 conn->qos_delay_variation = delay_variation; 9431 hci_run(); 9432 return ERROR_CODE_SUCCESS; 9433 } 9434 9435 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9436 hci_stack->new_page_scan_interval = page_scan_interval; 9437 hci_stack->new_page_scan_window = page_scan_window; 9438 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9439 hci_run(); 9440 } 9441 9442 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9443 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9444 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9445 hci_run(); 9446 } 9447 9448 void gap_set_page_timeout(uint16_t page_timeout){ 9449 hci_stack->page_timeout = page_timeout; 9450 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9451 hci_run(); 9452 } 9453 9454 #endif 9455 9456 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9457 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9458 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9459 if (le_device_db_index >= le_device_db_max_count()) return; 9460 uint8_t offset = le_device_db_index >> 3; 9461 uint8_t mask = 1 << (le_device_db_index & 7); 9462 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9463 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9464 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9465 // note: go back to remove entries, otherwise, a remove + add will skip the add 9466 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9467 } 9468 } 9469 9470 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9471 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9472 if (le_device_db_index >= le_device_db_max_count()) return; 9473 uint8_t offset = le_device_db_index >> 3; 9474 uint8_t mask = 1 << (le_device_db_index & 7); 9475 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9476 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9477 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9478 } 9479 } 9480 9481 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9482 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9483 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9484 } 9485 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9486 // restart le resolving list update 9487 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9488 } 9489 return ERROR_CODE_SUCCESS; 9490 } 9491 9492 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9493 hci_stack->le_privacy_mode = privacy_mode; 9494 } 9495 #endif 9496 9497 #ifdef ENABLE_BLE 9498 #ifdef ENABLE_LE_CENTRAL 9499 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9500 9501 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9502 // check if already in list 9503 btstack_linked_list_iterator_t it; 9504 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9505 while (btstack_linked_list_iterator_has_next(&it)) { 9506 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9507 if (entry->sid != advertising_sid) { 9508 continue; 9509 } 9510 if (entry->address_type != address_type) { 9511 continue; 9512 } 9513 if (memcmp(entry->address, address, 6) != 0) { 9514 continue; 9515 } 9516 // disallow if already scheduled to add 9517 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9518 return ERROR_CODE_COMMAND_DISALLOWED; 9519 } 9520 // still on controller, but scheduled to remove -> re-add 9521 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9522 return ERROR_CODE_SUCCESS; 9523 } 9524 // alloc and add to list 9525 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9526 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9527 entry->sid = advertising_sid; 9528 entry->address_type = address_type; 9529 (void)memcpy(entry->address, address, 6); 9530 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9531 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9532 return ERROR_CODE_SUCCESS; 9533 } 9534 9535 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9536 btstack_linked_list_iterator_t it; 9537 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9538 while (btstack_linked_list_iterator_has_next(&it)){ 9539 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9540 if (entry->sid != advertising_sid) { 9541 continue; 9542 } 9543 if (entry->address_type != address_type) { 9544 continue; 9545 } 9546 if (memcmp(entry->address, address, 6) != 0) { 9547 continue; 9548 } 9549 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9550 // remove from controller if already present 9551 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9552 } else { 9553 // directly remove entry from whitelist 9554 btstack_linked_list_iterator_remove(&it); 9555 btstack_memory_periodic_advertiser_list_entry_free(entry); 9556 } 9557 return ERROR_CODE_SUCCESS; 9558 } 9559 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9560 } 9561 9562 static void hci_periodic_advertiser_list_clear(void){ 9563 btstack_linked_list_iterator_t it; 9564 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9565 while (btstack_linked_list_iterator_has_next(&it)){ 9566 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9567 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9568 // remove from controller if already present 9569 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9570 continue; 9571 } 9572 // directly remove entry from whitelist 9573 btstack_linked_list_iterator_remove(&it); 9574 btstack_memory_periodic_advertiser_list_entry_free(entry); 9575 } 9576 } 9577 9578 uint8_t gap_periodic_advertiser_list_clear(void){ 9579 hci_periodic_advertiser_list_clear(); 9580 hci_run(); 9581 return ERROR_CODE_SUCCESS; 9582 } 9583 9584 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9585 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9586 if (status){ 9587 return status; 9588 } 9589 hci_run(); 9590 return ERROR_CODE_SUCCESS; 9591 } 9592 9593 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9594 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9595 if (status){ 9596 return status; 9597 } 9598 hci_run(); 9599 return ERROR_CODE_SUCCESS; 9600 } 9601 9602 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9603 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9604 // abort if already active 9605 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9606 return ERROR_CODE_COMMAND_DISALLOWED; 9607 } 9608 // store request 9609 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9610 hci_stack->le_periodic_sync_options = options; 9611 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9612 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9613 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9614 hci_stack->le_periodic_sync_skip = skip; 9615 hci_stack->le_periodic_sync_timeout = sync_timeout; 9616 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9617 9618 hci_run(); 9619 return ERROR_CODE_SUCCESS; 9620 } 9621 9622 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9623 // abort if not requested 9624 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9625 return ERROR_CODE_COMMAND_DISALLOWED; 9626 } 9627 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9628 hci_run(); 9629 return ERROR_CODE_SUCCESS; 9630 } 9631 9632 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9633 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9634 return ERROR_CODE_COMMAND_DISALLOWED; 9635 } 9636 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9637 hci_run(); 9638 return ERROR_CODE_SUCCESS; 9639 } 9640 9641 #endif 9642 #endif 9643 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9644 static hci_iso_stream_t * 9645 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9646 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9647 if (iso_stream != NULL){ 9648 iso_stream->iso_type = iso_type; 9649 iso_stream->state = state; 9650 iso_stream->group_id = group_id; 9651 iso_stream->stream_id = stream_id; 9652 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9653 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9654 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9655 } 9656 return iso_stream; 9657 } 9658 9659 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9660 btstack_linked_list_iterator_t it; 9661 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9662 while (btstack_linked_list_iterator_has_next(&it)){ 9663 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9664 if (iso_stream->cis_handle == con_handle ) { 9665 return iso_stream; 9666 } 9667 } 9668 return NULL; 9669 } 9670 9671 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9672 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9673 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9674 btstack_memory_hci_iso_stream_free(iso_stream); 9675 } 9676 9677 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9678 btstack_linked_list_iterator_t it; 9679 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9680 while (btstack_linked_list_iterator_has_next(&it)){ 9681 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9682 if ((iso_stream->group_id == group_id) && 9683 (iso_stream->iso_type == iso_type)){ 9684 btstack_linked_list_iterator_remove(&it); 9685 btstack_memory_hci_iso_stream_free(iso_stream); 9686 } 9687 } 9688 } 9689 9690 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9691 btstack_linked_list_iterator_t it; 9692 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9693 while (btstack_linked_list_iterator_has_next(&it)){ 9694 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9695 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9696 (iso_stream->group_id == group_id)){ 9697 btstack_linked_list_iterator_remove(&it); 9698 btstack_memory_hci_iso_stream_free(iso_stream); 9699 } 9700 } 9701 } 9702 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9703 btstack_linked_list_iterator_t it; 9704 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9705 while (btstack_linked_list_iterator_has_next(&it)){ 9706 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9707 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9708 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9709 } 9710 } 9711 } 9712 9713 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9714 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9715 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9716 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9717 return (sdu_len_offset + 2 + sdu_len) == size; 9718 } 9719 9720 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9721 if (hci_stack->iso_packet_handler == NULL) { 9722 return; 9723 } 9724 if (size < 4) { 9725 return; 9726 } 9727 9728 // parse header 9729 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9730 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9731 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9732 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9733 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9734 9735 // assert packet is complete 9736 if ((iso_data_len + 4u) != size){ 9737 return; 9738 } 9739 9740 if ((pb_flag & 0x01) == 0){ 9741 if (pb_flag == 0x02){ 9742 // The ISO_Data_Load field contains a header and a complete SDU. 9743 if (hci_iso_sdu_complete(packet, size)) { 9744 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9745 } 9746 } else { 9747 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9748 if (iso_stream == NULL){ 9749 return; 9750 } 9751 if (size > HCI_ISO_PAYLOAD_SIZE){ 9752 return; 9753 } 9754 memcpy(iso_stream->reassembly_buffer, packet, size); 9755 // fix pb_flag 9756 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9757 iso_stream->reassembly_pos = size; 9758 } 9759 } else { 9760 // iso_data_load contains continuation or last fragment of an SDU 9761 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9762 if (ts_flag != 0){ 9763 return; 9764 } 9765 // append fragment 9766 if (iso_stream == NULL){ 9767 return; 9768 } 9769 if (iso_stream->reassembly_pos == 0){ 9770 return; 9771 } 9772 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9773 // reset reassembly buffer 9774 iso_stream->reassembly_pos = 0; 9775 return; 9776 } 9777 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9778 iso_stream->reassembly_pos += iso_data_len; 9779 9780 // deliver if last fragment and SDU complete 9781 if (pb_flag == 0x03){ 9782 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9783 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9784 } 9785 iso_stream->reassembly_pos = 0; 9786 } 9787 } 9788 } 9789 9790 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9791 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9792 uint16_t pos = 0; 9793 event[pos++] = HCI_EVENT_META_GAP; 9794 event[pos++] = 4 + (2 * big->num_bis); 9795 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9796 event[pos++] = status; 9797 event[pos++] = big->big_handle; 9798 event[pos++] = big->num_bis; 9799 uint8_t i; 9800 for (i=0;i<big->num_bis;i++){ 9801 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9802 pos += 2; 9803 } 9804 hci_emit_event(event, pos, 0); 9805 } 9806 9807 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9808 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9809 uint16_t pos = 0; 9810 event[pos++] = HCI_EVENT_META_GAP; 9811 event[pos++] = 4 + (2 * cig->num_cis); 9812 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9813 event[pos++] = status; 9814 event[pos++] = cig->cig_id; 9815 event[pos++] = cig->num_cis; 9816 uint8_t i; 9817 for (i=0;i<cig->num_cis;i++){ 9818 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9819 pos += 2; 9820 } 9821 hci_emit_event(event, pos, 0); 9822 } 9823 9824 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9825 hci_con_handle_t acl_con_handle) { 9826 uint8_t event [10]; 9827 uint16_t pos = 0; 9828 event[pos++] = HCI_EVENT_META_GAP; 9829 event[pos++] = 8; 9830 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9831 event[pos++] = status; 9832 event[pos++] = cig_id; 9833 event[pos++] = cis_id; 9834 little_endian_store_16(event, pos, cis_con_handle); 9835 pos += 2; 9836 little_endian_store_16(event, pos, acl_con_handle); 9837 pos += 2; 9838 hci_emit_event(event, pos, 0); 9839 } 9840 9841 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9842 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9843 // cache data before finalizing struct 9844 uint8_t cig_id = iso_stream->group_id; 9845 uint8_t cis_id = iso_stream->stream_id; 9846 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9847 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9848 if (status != ERROR_CODE_SUCCESS){ 9849 hci_iso_stream_finalize(iso_stream); 9850 } 9851 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9852 } 9853 9854 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9855 uint8_t event [4]; 9856 uint16_t pos = 0; 9857 event[pos++] = HCI_EVENT_META_GAP; 9858 event[pos++] = 2; 9859 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9860 event[pos++] = big->big_handle; 9861 hci_emit_event(event, pos, 0); 9862 } 9863 9864 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9865 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9866 uint16_t pos = 0; 9867 event[pos++] = HCI_EVENT_META_GAP; 9868 event[pos++] = 4; 9869 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9870 event[pos++] = status; 9871 event[pos++] = big_sync->big_handle; 9872 event[pos++] = big_sync->num_bis; 9873 uint8_t i; 9874 for (i=0;i<big_sync->num_bis;i++){ 9875 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9876 pos += 2; 9877 } 9878 hci_emit_event(event, pos, 0); 9879 } 9880 9881 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9882 uint8_t event [4]; 9883 uint16_t pos = 0; 9884 event[pos++] = HCI_EVENT_META_GAP; 9885 event[pos++] = 2; 9886 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9887 event[pos++] = big_handle; 9888 hci_emit_event(event, pos, 0); 9889 } 9890 9891 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9892 uint8_t event[6]; 9893 uint16_t pos = 0; 9894 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9895 event[pos++] = sizeof(event) - 2; 9896 event[pos++] = big->big_handle; 9897 event[pos++] = bis_index; 9898 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9899 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9900 } 9901 9902 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9903 uint8_t event[4]; 9904 uint16_t pos = 0; 9905 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9906 event[pos++] = sizeof(event) - 2; 9907 little_endian_store_16(event, pos, cis_con_handle); 9908 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9909 } 9910 9911 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9912 btstack_linked_list_iterator_t it; 9913 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9914 while (btstack_linked_list_iterator_has_next(&it)){ 9915 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9916 if ( big->big_handle == big_handle ) { 9917 return big; 9918 } 9919 } 9920 return NULL; 9921 } 9922 9923 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9924 btstack_linked_list_iterator_t it; 9925 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9926 while (btstack_linked_list_iterator_has_next(&it)){ 9927 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9928 if ( big_sync->big_handle == big_handle ) { 9929 return big_sync; 9930 } 9931 } 9932 return NULL; 9933 } 9934 9935 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9936 hci_stack->iso_packets_to_queue = num_packets; 9937 } 9938 9939 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9940 btstack_linked_list_iterator_t it; 9941 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9942 while (btstack_linked_list_iterator_has_next(&it)){ 9943 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9944 if ( cig->cig_id == cig_id ) { 9945 return cig; 9946 } 9947 } 9948 return NULL; 9949 } 9950 9951 static void hci_iso_notify_can_send_now(void){ 9952 9953 // BIG 9954 9955 btstack_linked_list_iterator_t it; 9956 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9957 while (btstack_linked_list_iterator_has_next(&it)){ 9958 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9959 // track number completed packet timestamps 9960 if (big->num_completed_timestamp_current_valid){ 9961 big->num_completed_timestamp_current_valid = false; 9962 if (big->num_completed_timestamp_previous_valid){ 9963 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9964 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9965 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9966 big->num_completed_timestamp_previous_ms); 9967 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9968 // to catch up, skip packet on all BIS 9969 uint8_t i; 9970 for (i=0;i<big->num_bis;i++){ 9971 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9972 if (iso_stream){ 9973 iso_stream->num_packets_to_skip++; 9974 } 9975 } 9976 } 9977 } 9978 big->num_completed_timestamp_previous_valid = true; 9979 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9980 } 9981 9982 if (big->can_send_now_requested){ 9983 // check if no outgoing iso packets pending and no can send now have to be emitted 9984 uint8_t i; 9985 bool can_send = true; 9986 uint8_t num_iso_queued_minimum = 0; 9987 for (i=0;i<big->num_bis;i++){ 9988 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9989 if (iso_stream == NULL) continue; 9990 // handle case where individual ISO packet was sent too late: 9991 // for each additionally queued packet, a new one needs to get skipped 9992 if (i==0){ 9993 num_iso_queued_minimum = iso_stream->num_packets_sent; 9994 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9995 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9996 iso_stream->num_packets_to_skip += num_packets_to_skip; 9997 iso_stream->num_packets_sent -= num_packets_to_skip; 9998 } 9999 // check if we can send now 10000 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10001 can_send = false; 10002 break; 10003 } 10004 } 10005 if (can_send){ 10006 // propagate can send now to individual streams 10007 big->can_send_now_requested = false; 10008 for (i=0;i<big->num_bis;i++){ 10009 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10010 iso_stream->emit_ready_to_send = true; 10011 } 10012 } 10013 } 10014 } 10015 10016 if (hci_stack->hci_packet_buffer_reserved) return; 10017 10018 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10019 while (btstack_linked_list_iterator_has_next(&it)){ 10020 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10021 // report bis ready 10022 uint8_t i; 10023 for (i=0;i<big->num_bis;i++){ 10024 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10025 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10026 iso_stream->emit_ready_to_send = false; 10027 hci_emit_bis_can_send_now(big, i); 10028 break; 10029 } 10030 } 10031 } 10032 10033 // CIS 10034 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10035 while (btstack_linked_list_iterator_has_next(&it)) { 10036 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10037 if ((iso_stream->can_send_now_requested) && 10038 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10039 iso_stream->can_send_now_requested = false; 10040 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10041 } 10042 } 10043 } 10044 10045 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10046 if (hci_big_for_handle(big_params->big_handle) != NULL){ 10047 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10048 } 10049 if (big_params->num_bis == 0){ 10050 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10051 } 10052 if (big_params->num_bis > MAX_NR_BIS){ 10053 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10054 } 10055 10056 // reserve ISO Streams 10057 uint8_t i; 10058 uint8_t status = ERROR_CODE_SUCCESS; 10059 for (i=0;i<big_params->num_bis;i++){ 10060 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 10061 if (iso_stream == NULL) { 10062 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10063 break; 10064 } 10065 } 10066 10067 // free structs on error 10068 if (status != ERROR_CODE_SUCCESS){ 10069 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 10070 return status; 10071 } 10072 10073 le_audio_big_t * big = storage; 10074 big->big_handle = big_params->big_handle; 10075 big->params = big_params; 10076 big->state = LE_AUDIO_BIG_STATE_CREATE; 10077 big->num_bis = big_params->num_bis; 10078 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10079 10080 hci_run(); 10081 10082 return ERROR_CODE_SUCCESS; 10083 } 10084 10085 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10086 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 10087 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10088 } 10089 if (big_sync_params->num_bis == 0){ 10090 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10091 } 10092 if (big_sync_params->num_bis > MAX_NR_BIS){ 10093 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10094 } 10095 10096 le_audio_big_sync_t * big_sync = storage; 10097 big_sync->big_handle = big_sync_params->big_handle; 10098 big_sync->params = big_sync_params; 10099 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10100 big_sync->num_bis = big_sync_params->num_bis; 10101 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10102 10103 hci_run(); 10104 10105 return ERROR_CODE_SUCCESS; 10106 } 10107 10108 uint8_t gap_big_terminate(uint8_t big_handle){ 10109 le_audio_big_t * big = hci_big_for_handle(big_handle); 10110 if (big == NULL){ 10111 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10112 } 10113 switch (big->state){ 10114 case LE_AUDIO_BIG_STATE_CREATE: 10115 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10116 hci_emit_big_terminated(big); 10117 break; 10118 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10119 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10120 break; 10121 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10122 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10123 case LE_AUDIO_BIG_STATE_ACTIVE: 10124 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10125 hci_run(); 10126 break; 10127 default: 10128 return ERROR_CODE_COMMAND_DISALLOWED; 10129 } 10130 return ERROR_CODE_SUCCESS; 10131 } 10132 10133 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10134 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10135 if (big_sync == NULL){ 10136 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10137 } 10138 switch (big_sync->state){ 10139 case LE_AUDIO_BIG_STATE_CREATE: 10140 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10141 hci_emit_big_sync_stopped(big_handle); 10142 break; 10143 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10144 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10145 break; 10146 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10147 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10148 case LE_AUDIO_BIG_STATE_ACTIVE: 10149 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10150 hci_run(); 10151 break; 10152 default: 10153 return ERROR_CODE_COMMAND_DISALLOWED; 10154 } 10155 return ERROR_CODE_SUCCESS; 10156 } 10157 10158 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10159 le_audio_big_t * big = hci_big_for_handle(big_handle); 10160 if (big == NULL){ 10161 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10162 } 10163 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10164 return ERROR_CODE_COMMAND_DISALLOWED; 10165 } 10166 big->can_send_now_requested = true; 10167 hci_iso_notify_can_send_now(); 10168 return ERROR_CODE_SUCCESS; 10169 } 10170 10171 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10172 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10173 if (iso_stream == NULL){ 10174 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10175 } 10176 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10177 return ERROR_CODE_COMMAND_DISALLOWED; 10178 } 10179 iso_stream->can_send_now_requested = true; 10180 hci_iso_notify_can_send_now(); 10181 return ERROR_CODE_SUCCESS; 10182 } 10183 10184 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10185 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10186 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10187 } 10188 if (cig_params->num_cis == 0){ 10189 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10190 } 10191 if (cig_params->num_cis > MAX_NR_BIS){ 10192 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10193 } 10194 10195 // reserve ISO Streams 10196 uint8_t i; 10197 uint8_t status = ERROR_CODE_SUCCESS; 10198 for (i=0;i<cig_params->num_cis;i++){ 10199 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10200 if (iso_stream == NULL) { 10201 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10202 break; 10203 } 10204 } 10205 10206 // free structs on error 10207 if (status != ERROR_CODE_SUCCESS){ 10208 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10209 return status; 10210 } 10211 10212 le_audio_cig_t * cig = storage; 10213 cig->cig_id = cig_params->cig_id; 10214 cig->num_cis = cig_params->num_cis; 10215 cig->params = cig_params; 10216 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10217 for (i=0;i<cig->num_cis;i++){ 10218 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10219 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10220 cig->cis_setup_active[i] = false; 10221 cig->cis_established[i] = false; 10222 } 10223 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10224 10225 hci_run(); 10226 10227 return ERROR_CODE_SUCCESS; 10228 } 10229 10230 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10231 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10232 if (cig == NULL){ 10233 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10234 } 10235 10236 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10237 return ERROR_CODE_COMMAND_DISALLOWED; 10238 } 10239 10240 // store ACL Connection Handles 10241 uint8_t i; 10242 for (i=0;i<cig->num_cis;i++){ 10243 // check that all con handles exist and store 10244 hci_con_handle_t cis_handle = cis_con_handles[i]; 10245 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10246 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10247 } 10248 uint8_t j; 10249 bool found = false; 10250 for (j=0;j<cig->num_cis;j++){ 10251 if (cig->cis_con_handles[j] == cis_handle){ 10252 cig->acl_con_handles[j] = acl_con_handles[j]; 10253 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10254 btstack_assert(iso_stream != NULL); 10255 iso_stream->acl_handle = acl_con_handles[j]; 10256 found = true; 10257 break; 10258 } 10259 } 10260 if (!found){ 10261 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10262 } 10263 } 10264 10265 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10266 hci_run(); 10267 10268 return ERROR_CODE_SUCCESS; 10269 } 10270 10271 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10272 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10273 if (iso_stream == NULL){ 10274 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10275 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10276 } 10277 10278 // set next state and continue 10279 iso_stream->state = state; 10280 hci_run(); 10281 return ERROR_CODE_SUCCESS; 10282 } 10283 10284 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10285 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10286 } 10287 10288 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10289 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10290 } 10291 10292 10293 #endif 10294 #endif /* ENABLE_BLE */ 10295 10296 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10297 void hci_setup_test_connections_fuzz(void){ 10298 hci_connection_t * conn; 10299 10300 // default address: 66:55:44:33:00:01 10301 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10302 10303 // setup Controller info 10304 hci_stack->num_cmd_packets = 255; 10305 hci_stack->acl_packets_total_num = 255; 10306 10307 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10308 addr[5] = 0x01; 10309 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10310 conn->con_handle = addr[5]; 10311 conn->state = RECEIVED_CONNECTION_REQUEST; 10312 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10313 10314 // setup incoming Classic SCO connection with con handle 0x0002 10315 addr[5] = 0x02; 10316 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10317 conn->con_handle = addr[5]; 10318 conn->state = RECEIVED_CONNECTION_REQUEST; 10319 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10320 10321 // setup ready Classic ACL connection with con handle 0x0003 10322 addr[5] = 0x03; 10323 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10324 conn->con_handle = addr[5]; 10325 conn->state = OPEN; 10326 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10327 10328 // setup ready Classic SCO connection with con handle 0x0004 10329 addr[5] = 0x04; 10330 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10331 conn->con_handle = addr[5]; 10332 conn->state = OPEN; 10333 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10334 10335 // setup ready LE ACL connection with con handle 0x005 and public address 10336 addr[5] = 0x05; 10337 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10338 conn->con_handle = addr[5]; 10339 conn->state = OPEN; 10340 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10341 conn->sm_connection.sm_connection_encrypted = 1; 10342 } 10343 10344 void hci_free_connections_fuzz(void){ 10345 btstack_linked_list_iterator_t it; 10346 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10347 while (btstack_linked_list_iterator_has_next(&it)){ 10348 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10349 btstack_linked_list_iterator_remove(&it); 10350 btstack_memory_hci_connection_free(con); 10351 } 10352 } 10353 void hci_simulate_working_fuzz(void){ 10354 hci_stack->le_scanning_param_update = false; 10355 hci_init_done(); 10356 hci_stack->num_cmd_packets = 255; 10357 } 10358 #endif 10359