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 // check for free places on Bluetooth module 969 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 970 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 971 hci_release_packet_buffer(); 972 hci_emit_transport_packet_sent(); 973 return BTSTACK_ACL_BUFFERS_FULL; 974 } 975 976 hci_connection_t *connection = hci_connection_for_handle( con_handle); 977 if (!connection) { 978 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 979 hci_release_packet_buffer(); 980 hci_emit_transport_packet_sent(); 981 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 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 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 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 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 (packet_type_sizes[i] == 0) continue; 1347 if (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(packet_type_feature_requirement_bit);i++){ 1353 unsigned int bit_idx = 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, packet_type_feature_packet_mask[i]); 1357 packet_types &= ~packet_type_feature_packet_mask[i]; 1358 } 1359 // flip bits for "may not be used" 1360 packet_types ^= 0x3306; 1361 return packet_types; 1362 } 1363 1364 uint16_t hci_usable_acl_packet_types(void){ 1365 return hci_stack->packet_types; 1366 } 1367 #endif 1368 1369 uint8_t* hci_get_outgoing_packet_buffer(void){ 1370 // hci packet buffer is >= acl data packet length 1371 return hci_stack->hci_packet_buffer; 1372 } 1373 1374 uint16_t hci_max_acl_data_packet_length(void){ 1375 return hci_stack->acl_data_packet_length; 1376 } 1377 1378 #ifdef ENABLE_CLASSIC 1379 bool hci_extended_sco_link_supported(void){ 1380 // No. 31, byte 3, bit 7 1381 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1382 } 1383 #endif 1384 1385 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1386 // No. 54, byte 6, bit 6 1387 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1388 } 1389 1390 #ifdef ENABLE_CLASSIC 1391 static int gap_ssp_supported(void){ 1392 // No. 51, byte 6, bit 3 1393 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1394 } 1395 #endif 1396 1397 static int hci_classic_supported(void){ 1398 #ifdef ENABLE_CLASSIC 1399 // No. 37, byte 4, bit 5, = No BR/EDR Support 1400 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1401 #else 1402 return 0; 1403 #endif 1404 } 1405 1406 static int hci_le_supported(void){ 1407 #ifdef ENABLE_BLE 1408 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1409 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1410 #else 1411 return 0; 1412 #endif 1413 } 1414 1415 static bool hci_command_supported(uint8_t command_index){ 1416 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1417 } 1418 1419 #ifdef ENABLE_BLE 1420 1421 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1422 static bool hci_extended_advertising_supported(void){ 1423 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1424 } 1425 #endif 1426 1427 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1428 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1429 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1430 } else { 1431 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1432 } 1433 } 1434 1435 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1436 *addr_type = hci_stack->le_own_addr_type; 1437 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1438 } 1439 1440 #ifdef ENABLE_LE_PERIPHERAL 1441 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1442 *addr_type = hci_stack->le_advertisements_own_addr_type; 1443 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1444 }; 1445 #endif 1446 1447 #ifdef ENABLE_LE_CENTRAL 1448 1449 /** 1450 * @brief Get own addr type and address used for LE connections (Central) 1451 */ 1452 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1453 *addr_type = hci_stack->le_connection_own_addr_type; 1454 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1455 } 1456 1457 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1458 1459 uint16_t offset = 3; 1460 uint8_t num_reports = packet[offset]; 1461 offset += 1; 1462 1463 uint16_t i; 1464 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1465 for (i=0; (i<num_reports) && (offset < size);i++){ 1466 // sanity checks on data_length: 1467 uint8_t data_length = packet[offset + 8]; 1468 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1469 if ((offset + 9u + data_length + 1u) > size) return; 1470 // setup event 1471 uint8_t event_size = 10u + data_length; 1472 uint16_t pos = 0; 1473 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1474 event[pos++] = event_size; 1475 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1476 offset += 8; 1477 pos += 8; 1478 event[pos++] = packet[offset + 1 + data_length]; // rssi 1479 event[pos++] = data_length; 1480 offset++; 1481 (void)memcpy(&event[pos], &packet[offset], data_length); 1482 pos += data_length; 1483 offset += data_length + 1u; // rssi 1484 hci_emit_event(event, pos, 1); 1485 } 1486 } 1487 1488 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1489 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1490 uint16_t offset = 3; 1491 uint8_t num_reports = packet[offset++]; 1492 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1493 uint8_t i; 1494 for (i=0; (i<num_reports) && (offset < size);i++){ 1495 // sanity checks on data_length: 1496 uint16_t data_length = packet[offset + 23]; 1497 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1498 if ((offset + 24u + data_length) > size) return; 1499 uint16_t event_type = little_endian_read_16(packet, offset); 1500 offset += 2; 1501 if ((event_type & 0x10) != 0) { 1502 // setup legacy event 1503 uint8_t legacy_event_type; 1504 switch (event_type){ 1505 case 0b0010011: 1506 // ADV_IND 1507 legacy_event_type = 0; 1508 break; 1509 case 0b0010101: 1510 // ADV_DIRECT_IND 1511 legacy_event_type = 1; 1512 break; 1513 case 0b0010010: 1514 // ADV_SCAN_IND 1515 legacy_event_type = 2; 1516 break; 1517 case 0b0010000: 1518 // ADV_NONCONN_IND 1519 legacy_event_type = 3; 1520 break; 1521 case 0b0011011: 1522 case 0b0011010: 1523 // SCAN_RSP 1524 legacy_event_type = 4; 1525 break; 1526 default: 1527 legacy_event_type = 0; 1528 break; 1529 } 1530 uint16_t pos = 0; 1531 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1532 event[pos++] = 10u + data_length; 1533 event[pos++] = legacy_event_type; 1534 // copy address type + address 1535 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1536 offset += 7; 1537 pos += 7; 1538 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1539 offset += 4; 1540 // copy rssi 1541 event[pos++] = packet[offset++]; 1542 // skip periodic advertising interval and direct address 1543 offset += 9; 1544 // copy data len + data; 1545 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1546 pos += 1 +data_length; 1547 offset += 1+ data_length; 1548 hci_emit_event(event, pos, 1); 1549 } else { 1550 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1551 uint8_t report_len = 24 + data_length; 1552 event[1] = report_len; 1553 little_endian_store_16(event, 2, event_type); 1554 memcpy(&event[4], &packet[offset], report_len); 1555 offset += report_len; 1556 hci_emit_event(event, 2 + report_len, 1); 1557 } 1558 } 1559 } 1560 #endif 1561 1562 #endif 1563 #endif 1564 1565 #ifdef ENABLE_BLE 1566 #ifdef ENABLE_LE_PERIPHERAL 1567 static void hci_update_advertisements_enabled_for_current_roles(void){ 1568 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1569 // get number of active le slave connections 1570 int num_slave_connections = 0; 1571 btstack_linked_list_iterator_t it; 1572 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1573 while (btstack_linked_list_iterator_has_next(&it)){ 1574 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1575 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1576 if (con->state != OPEN) continue; 1577 if (con->role != HCI_ROLE_SLAVE) continue; 1578 if (!hci_is_le_connection(con)) continue; 1579 num_slave_connections++; 1580 } 1581 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1582 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1583 } else { 1584 hci_stack->le_advertisements_enabled_for_current_roles = false; 1585 } 1586 } 1587 #endif 1588 #endif 1589 1590 #ifdef ENABLE_CLASSIC 1591 static void gap_run_set_local_name(void){ 1592 hci_reserve_packet_buffer(); 1593 uint8_t * packet = hci_stack->hci_packet_buffer; 1594 // construct HCI Command and send 1595 uint16_t opcode = hci_write_local_name.opcode; 1596 hci_stack->last_cmd_opcode = opcode; 1597 packet[0] = opcode & 0xff; 1598 packet[1] = opcode >> 8; 1599 packet[2] = DEVICE_NAME_LEN; 1600 memset(&packet[3], 0, DEVICE_NAME_LEN); 1601 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1602 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1603 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1604 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1605 // expand '00:00:00:00:00:00' in name with bd_addr 1606 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1607 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1608 } 1609 1610 static void gap_run_set_eir_data(void){ 1611 hci_reserve_packet_buffer(); 1612 uint8_t * packet = hci_stack->hci_packet_buffer; 1613 // construct HCI Command in-place and send 1614 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1615 hci_stack->last_cmd_opcode = opcode; 1616 uint16_t offset = 0; 1617 packet[offset++] = opcode & 0xff; 1618 packet[offset++] = opcode >> 8; 1619 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1620 packet[offset++] = 0; // FEC not required 1621 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1622 if (hci_stack->eir_data){ 1623 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1624 ad_context_t context; 1625 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1626 uint8_t data_type = ad_iterator_get_data_type(&context); 1627 uint8_t size = ad_iterator_get_data_len(&context); 1628 const uint8_t *data = ad_iterator_get_data(&context); 1629 // copy item 1630 packet[offset++] = size + 1; 1631 packet[offset++] = data_type; 1632 memcpy(&packet[offset], data, size); 1633 // update name item 1634 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1635 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1636 } 1637 offset += size; 1638 } 1639 } else { 1640 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1641 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1642 packet[offset++] = bytes_to_copy + 1; 1643 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1644 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1645 // expand '00:00:00:00:00:00' in name with bd_addr 1646 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1647 } 1648 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1649 } 1650 1651 static void hci_run_gap_tasks_classic(void){ 1652 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1653 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1654 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1655 return; 1656 } 1657 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1658 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1659 gap_run_set_local_name(); 1660 return; 1661 } 1662 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1663 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1664 gap_run_set_eir_data(); 1665 return; 1666 } 1667 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1668 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1669 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1670 return; 1671 } 1672 // write page scan activity 1673 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1674 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1675 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1676 return; 1677 } 1678 // write page scan type 1679 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1680 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1681 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1682 return; 1683 } 1684 // write page timeout 1685 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1686 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1687 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1688 return; 1689 } 1690 // send scan enable 1691 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1692 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1693 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1694 return; 1695 } 1696 // send write scan activity 1697 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1698 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1699 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1700 return; 1701 } 1702 } 1703 #endif 1704 1705 #ifndef HAVE_HOST_CONTROLLER_API 1706 1707 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1708 if (!hci_stack->config) return 0; 1709 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1710 // Limit baud rate for Broadcom chipsets to 3 mbps 1711 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1712 baud_rate = 3000000; 1713 } 1714 return baud_rate; 1715 } 1716 1717 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1718 UNUSED(ds); 1719 1720 switch (hci_stack->substate){ 1721 case HCI_INIT_W4_SEND_RESET: 1722 log_info("Resend HCI Reset"); 1723 hci_stack->substate = HCI_INIT_SEND_RESET; 1724 hci_stack->num_cmd_packets = 1; 1725 hci_run(); 1726 break; 1727 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1728 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1729 if (hci_stack->hci_transport->reset_link){ 1730 hci_stack->hci_transport->reset_link(); 1731 } 1732 1733 /* fall through */ 1734 1735 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1736 log_info("Resend HCI Reset - CSR Warm Boot"); 1737 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1738 hci_stack->num_cmd_packets = 1; 1739 hci_run(); 1740 break; 1741 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1742 if (hci_stack->hci_transport->set_baudrate){ 1743 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1744 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1745 hci_stack->hci_transport->set_baudrate(baud_rate); 1746 } 1747 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1748 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1749 if (hci_stack->hci_transport->reset_link){ 1750 log_info("Link Reset"); 1751 hci_stack->hci_transport->reset_link(); 1752 } 1753 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1754 hci_run(); 1755 } 1756 break; 1757 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1758 // otherwise continue 1759 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1760 hci_send_cmd(&hci_read_local_supported_commands); 1761 break; 1762 default: 1763 break; 1764 } 1765 } 1766 #endif 1767 1768 static void hci_initializing_next_state(void){ 1769 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1770 } 1771 1772 static void hci_init_done(void){ 1773 // done. tell the app 1774 log_info("hci_init_done -> HCI_STATE_WORKING"); 1775 hci_stack->state = HCI_STATE_WORKING; 1776 hci_emit_state(); 1777 } 1778 1779 // assumption: hci_can_send_command_packet_now() == true 1780 static void hci_initializing_run(void){ 1781 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1782 1783 if (!hci_can_send_command_packet_now()) return; 1784 1785 #ifndef HAVE_HOST_CONTROLLER_API 1786 bool need_baud_change = hci_stack->config 1787 && hci_stack->chipset 1788 && hci_stack->chipset->set_baudrate_command 1789 && hci_stack->hci_transport->set_baudrate 1790 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1791 #endif 1792 1793 switch (hci_stack->substate){ 1794 case HCI_INIT_SEND_RESET: 1795 hci_state_reset(); 1796 1797 #ifndef HAVE_HOST_CONTROLLER_API 1798 // prepare reset if command complete not received in 100ms 1799 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1800 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1801 btstack_run_loop_add_timer(&hci_stack->timeout); 1802 #endif 1803 // send command 1804 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1805 hci_send_cmd(&hci_reset); 1806 break; 1807 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1808 hci_send_cmd(&hci_read_local_version_information); 1809 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1810 break; 1811 1812 #ifndef HAVE_HOST_CONTROLLER_API 1813 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1814 hci_state_reset(); 1815 // prepare reset if command complete not received in 100ms 1816 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1817 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1818 btstack_run_loop_add_timer(&hci_stack->timeout); 1819 // send command 1820 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1821 hci_send_cmd(&hci_reset); 1822 break; 1823 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1824 hci_state_reset(); 1825 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1826 hci_send_cmd(&hci_reset); 1827 break; 1828 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1829 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1830 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1831 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1832 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1833 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1834 break; 1835 } 1836 case HCI_INIT_SET_BD_ADDR: 1837 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1838 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1839 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1840 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1841 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1842 break; 1843 case HCI_INIT_SEND_READ_LOCAL_NAME: 1844 #ifdef ENABLE_CLASSIC 1845 hci_send_cmd(&hci_read_local_name); 1846 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1847 break; 1848 #endif 1849 /* fall through */ 1850 1851 case HCI_INIT_SEND_BAUD_CHANGE: 1852 if (need_baud_change) { 1853 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1854 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1855 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1856 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1857 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1858 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1859 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1860 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1861 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1862 btstack_run_loop_add_timer(&hci_stack->timeout); 1863 } 1864 break; 1865 } 1866 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1867 1868 /* fall through */ 1869 1870 case HCI_INIT_CUSTOM_INIT: 1871 case HCI_INIT_CUSTOM_PRE_INIT: 1872 // Custom initialization 1873 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1874 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1875 bool send_cmd = false; 1876 switch (hci_stack->chipset_result){ 1877 case BTSTACK_CHIPSET_VALID_COMMAND: 1878 send_cmd = true; 1879 switch (hci_stack->substate){ 1880 case HCI_INIT_CUSTOM_INIT: 1881 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1882 break; 1883 case HCI_INIT_CUSTOM_PRE_INIT: 1884 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1885 break; 1886 default: 1887 btstack_assert(false); 1888 break; 1889 } 1890 break; 1891 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1892 send_cmd = true; 1893 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1894 log_info("CSR Warm Boot"); 1895 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1896 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1897 btstack_run_loop_add_timer(&hci_stack->timeout); 1898 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1899 && hci_stack->config 1900 && hci_stack->chipset 1901 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1902 && hci_stack->hci_transport->set_baudrate 1903 && hci_transport_uart_get_main_baud_rate()){ 1904 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1905 } else { 1906 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1907 } 1908 break; 1909 default: 1910 break; 1911 } 1912 1913 if (send_cmd){ 1914 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1915 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1916 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1917 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1918 break; 1919 } 1920 log_info("Init script done"); 1921 1922 // Custom Pre-Init complete, start regular init with HCI Reset 1923 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1924 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1925 hci_send_cmd(&hci_reset); 1926 break; 1927 } 1928 1929 // Init script download on Broadcom chipsets causes: 1930 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1931 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1932 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1933 1934 // - baud rate to reset, restore UART baud rate if needed 1935 if (need_baud_change) { 1936 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1937 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1938 hci_stack->hci_transport->set_baudrate(baud_rate); 1939 } 1940 1941 uint16_t bcm_delay_ms = 300; 1942 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1943 // -> Work around: wait here. 1944 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1945 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1946 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1947 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1948 btstack_run_loop_add_timer(&hci_stack->timeout); 1949 break; 1950 } 1951 } 1952 #endif 1953 /* fall through */ 1954 1955 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1956 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1957 hci_send_cmd(&hci_read_local_supported_commands); 1958 break; 1959 case HCI_INIT_READ_BD_ADDR: 1960 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1961 hci_send_cmd(&hci_read_bd_addr); 1962 break; 1963 case HCI_INIT_READ_BUFFER_SIZE: 1964 // only read buffer size if supported 1965 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1966 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1967 hci_send_cmd(&hci_read_buffer_size); 1968 break; 1969 } 1970 1971 /* fall through */ 1972 1973 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1974 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1975 hci_send_cmd(&hci_read_local_supported_features); 1976 break; 1977 1978 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1979 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1980 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1981 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1982 break; 1983 case HCI_INIT_HOST_BUFFER_SIZE: 1984 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1985 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1986 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1987 break; 1988 #endif 1989 1990 case HCI_INIT_SET_EVENT_MASK: 1991 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1992 if (hci_le_supported()){ 1993 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1994 } else { 1995 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1996 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1997 } 1998 break; 1999 2000 case HCI_INIT_SET_EVENT_MASK_2: 2001 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2002 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2003 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2004 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2005 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2006 // Encryption Change Event v2 - bit 25 2007 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2008 break; 2009 } 2010 2011 #ifdef ENABLE_CLASSIC 2012 /* fall through */ 2013 2014 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2015 if (hci_classic_supported() && gap_ssp_supported()){ 2016 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2017 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2018 break; 2019 } 2020 2021 /* fall through */ 2022 2023 case HCI_INIT_WRITE_INQUIRY_MODE: 2024 if (hci_classic_supported()){ 2025 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2026 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2027 break; 2028 } 2029 2030 /* fall through */ 2031 2032 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2033 // skip write secure connections host support if not supported or disabled 2034 if (hci_classic_supported() && hci_stack->secure_connections_enable 2035 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2036 hci_stack->secure_connections_active = true; 2037 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2038 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2039 break; 2040 } 2041 2042 /* fall through */ 2043 2044 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2045 // skip set min encryption key size 2046 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2047 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2048 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2049 break; 2050 } 2051 2052 #ifdef ENABLE_SCO_OVER_HCI 2053 /* fall through */ 2054 2055 // only sent if ENABLE_SCO_OVER_HCI is defined 2056 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2057 // skip write synchronous flow control if not supported 2058 if (hci_classic_supported() 2059 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2060 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2061 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2062 break; 2063 } 2064 /* fall through */ 2065 2066 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2067 // skip write default erroneous data reporting if not supported 2068 if (hci_classic_supported() 2069 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2070 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2071 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2072 break; 2073 } 2074 #endif 2075 2076 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2077 /* fall through */ 2078 2079 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2080 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2081 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2082 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2083 #ifdef ENABLE_SCO_OVER_HCI 2084 log_info("BCM: Route SCO data via HCI transport"); 2085 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2086 #endif 2087 #ifdef ENABLE_SCO_OVER_PCM 2088 log_info("BCM: Route SCO data via PCM interface"); 2089 #ifdef ENABLE_BCM_PCM_WBS 2090 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2091 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2092 #else 2093 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2094 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2095 #endif 2096 #endif 2097 break; 2098 } 2099 #endif 2100 2101 #ifdef ENABLE_SCO_OVER_PCM 2102 /* fall through */ 2103 2104 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2105 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2106 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2107 log_info("BCM: Config PCM interface for I2S"); 2108 #ifdef ENABLE_BCM_PCM_WBS 2109 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2110 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2111 #else 2112 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2113 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2114 #endif 2115 break; 2116 } 2117 #endif 2118 #endif 2119 2120 #ifdef ENABLE_BLE 2121 /* fall through */ 2122 2123 // LE INIT 2124 case HCI_INIT_LE_READ_BUFFER_SIZE: 2125 if (hci_le_supported()){ 2126 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2127 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2128 hci_send_cmd(&hci_le_read_buffer_size_v2); 2129 } else { 2130 hci_send_cmd(&hci_le_read_buffer_size); 2131 } 2132 break; 2133 } 2134 2135 /* fall through */ 2136 2137 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2138 // skip write le host if not supported (e.g. on LE only EM9301) 2139 if (hci_le_supported() 2140 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2141 // LE Supported Host = 1, Simultaneous Host = 0 2142 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2143 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2144 break; 2145 } 2146 2147 /* fall through */ 2148 2149 case HCI_INIT_LE_SET_EVENT_MASK: 2150 if (hci_le_supported()){ 2151 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2152 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2153 break; 2154 } 2155 #endif 2156 2157 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2158 /* fall through */ 2159 2160 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2161 if (hci_le_supported() 2162 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2163 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2164 hci_send_cmd(&hci_le_read_maximum_data_length); 2165 break; 2166 } 2167 2168 /* fall through */ 2169 2170 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2171 if (hci_le_supported() 2172 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2173 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2174 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2175 break; 2176 } 2177 #endif 2178 2179 #ifdef ENABLE_LE_CENTRAL 2180 /* fall through */ 2181 2182 case HCI_INIT_READ_WHITE_LIST_SIZE: 2183 if (hci_le_supported()){ 2184 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2185 hci_send_cmd(&hci_le_read_white_list_size); 2186 break; 2187 } 2188 2189 #endif 2190 2191 #ifdef ENABLE_LE_PERIPHERAL 2192 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2193 /* fall through */ 2194 2195 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2196 if (hci_extended_advertising_supported()){ 2197 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2198 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2199 break; 2200 } 2201 #endif 2202 #endif 2203 /* fall through */ 2204 2205 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2206 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2207 if (hci_le_supported()) { 2208 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2209 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2210 break; 2211 } 2212 #endif 2213 2214 /* fall through */ 2215 2216 case HCI_INIT_DONE: 2217 hci_stack->substate = HCI_INIT_DONE; 2218 // main init sequence complete 2219 #ifdef ENABLE_CLASSIC 2220 // check if initial Classic GAP Tasks are completed 2221 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2222 hci_run_gap_tasks_classic(); 2223 break; 2224 } 2225 #endif 2226 #ifdef ENABLE_BLE 2227 #ifdef ENABLE_LE_CENTRAL 2228 // check if initial LE GAP Tasks are completed 2229 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2230 hci_run_general_gap_le(); 2231 break; 2232 } 2233 #endif 2234 #endif 2235 hci_init_done(); 2236 break; 2237 2238 default: 2239 return; 2240 } 2241 } 2242 2243 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2244 bool command_completed = false; 2245 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2246 uint16_t opcode = little_endian_read_16(packet,3); 2247 if (opcode == hci_stack->last_cmd_opcode){ 2248 command_completed = true; 2249 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2250 } else { 2251 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2252 } 2253 } 2254 2255 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2256 uint8_t status = packet[2]; 2257 uint16_t opcode = little_endian_read_16(packet,4); 2258 if (opcode == hci_stack->last_cmd_opcode){ 2259 if (status){ 2260 command_completed = true; 2261 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2262 } else { 2263 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2264 } 2265 } else { 2266 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2267 } 2268 } 2269 #ifndef HAVE_HOST_CONTROLLER_API 2270 // Vendor == CSR 2271 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2272 // TODO: track actual command 2273 command_completed = true; 2274 } 2275 2276 // Vendor == Toshiba 2277 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2278 // TODO: track actual command 2279 command_completed = true; 2280 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2281 hci_stack->num_cmd_packets = 1; 2282 } 2283 #endif 2284 2285 return command_completed; 2286 } 2287 2288 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2289 2290 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2291 2292 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2293 2294 #ifndef HAVE_HOST_CONTROLLER_API 2295 2296 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2297 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2298 // 2299 // HCI Reset 2300 // Timeout 100 ms 2301 // HCI Reset 2302 // Command Complete Reset 2303 // HCI Read Local Version Information 2304 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2305 // hang... 2306 // 2307 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2308 if (!command_completed 2309 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2310 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2311 2312 uint16_t opcode = little_endian_read_16(packet,3); 2313 if (opcode == hci_reset.opcode){ 2314 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2315 return; 2316 } 2317 } 2318 2319 // CSR & H5 2320 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2321 if (!command_completed 2322 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2323 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2324 2325 uint16_t opcode = little_endian_read_16(packet,3); 2326 if (opcode == hci_reset.opcode){ 2327 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2328 return; 2329 } 2330 } 2331 2332 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2333 // fix: Correct substate and behave as command below 2334 if (command_completed){ 2335 switch (hci_stack->substate){ 2336 case HCI_INIT_SEND_RESET: 2337 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2338 break; 2339 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2340 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2341 break; 2342 default: 2343 break; 2344 } 2345 } 2346 2347 #endif 2348 2349 if (!command_completed) return; 2350 2351 bool need_baud_change = false; 2352 bool need_addr_change = false; 2353 2354 #ifndef HAVE_HOST_CONTROLLER_API 2355 need_baud_change = hci_stack->config 2356 && hci_stack->chipset 2357 && hci_stack->chipset->set_baudrate_command 2358 && hci_stack->hci_transport->set_baudrate 2359 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2360 2361 need_addr_change = hci_stack->custom_bd_addr_set 2362 && hci_stack->chipset 2363 && hci_stack->chipset->set_bd_addr_command; 2364 #endif 2365 2366 switch(hci_stack->substate){ 2367 2368 #ifndef HAVE_HOST_CONTROLLER_API 2369 case HCI_INIT_SEND_RESET: 2370 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2371 // fix: just correct substate and behave as command below 2372 2373 /* fall through */ 2374 #endif 2375 2376 case HCI_INIT_W4_SEND_RESET: 2377 btstack_run_loop_remove_timer(&hci_stack->timeout); 2378 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2379 return; 2380 2381 #ifndef HAVE_HOST_CONTROLLER_API 2382 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2383 // for STLC2500D, baud rate change already happened. 2384 // for others, baud rate gets changed now 2385 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2386 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2387 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2388 hci_stack->hci_transport->set_baudrate(baud_rate); 2389 } 2390 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2391 return; 2392 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2393 btstack_run_loop_remove_timer(&hci_stack->timeout); 2394 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2395 return; 2396 case HCI_INIT_W4_CUSTOM_INIT: 2397 // repeat custom init 2398 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2399 return; 2400 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2401 // repeat custom init 2402 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2403 return; 2404 #endif 2405 2406 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2407 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2408 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2409 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2410 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2411 return; 2412 } 2413 if (need_addr_change){ 2414 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2415 return; 2416 } 2417 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2418 return; 2419 #ifndef HAVE_HOST_CONTROLLER_API 2420 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2421 if (need_baud_change){ 2422 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2423 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2424 hci_stack->hci_transport->set_baudrate(baud_rate); 2425 } 2426 if (need_addr_change){ 2427 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2428 return; 2429 } 2430 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2431 return; 2432 case HCI_INIT_W4_SET_BD_ADDR: 2433 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2434 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2435 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2436 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2437 return; 2438 } 2439 // skipping st warm boot 2440 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2441 return; 2442 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2443 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2444 return; 2445 #endif 2446 2447 case HCI_INIT_DONE: 2448 // set state if we came here by fall through 2449 hci_stack->substate = HCI_INIT_DONE; 2450 return; 2451 2452 default: 2453 break; 2454 } 2455 hci_initializing_next_state(); 2456 } 2457 2458 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2459 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2460 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2461 // check if we have been aware of the HCI connection 2462 switch (conn->state){ 2463 case SENT_CREATE_CONNECTION: 2464 case RECEIVED_CONNECTION_REQUEST: 2465 case ACCEPTED_CONNECTION_REQUEST: 2466 break; 2467 default: 2468 return; 2469 } 2470 2471 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2472 bd_addr_t bd_address; 2473 (void)memcpy(&bd_address, conn->address, 6); 2474 2475 #ifdef ENABLE_CLASSIC 2476 // cache needed data 2477 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2478 #endif 2479 2480 // connection failed, remove entry 2481 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2482 btstack_memory_hci_connection_free( conn ); 2483 2484 #ifdef ENABLE_CLASSIC 2485 // notify client if dedicated bonding 2486 if (notify_dedicated_bonding_failed){ 2487 log_info("hci notify_dedicated_bonding_failed"); 2488 hci_emit_dedicated_bonding_result(bd_address, status); 2489 } 2490 2491 // if authentication error, also delete link key 2492 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2493 gap_drop_link_key_for_bd_addr(bd_address); 2494 } 2495 #else 2496 UNUSED(status); 2497 #endif 2498 } 2499 2500 #ifdef ENABLE_CLASSIC 2501 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2502 // SSP Controller 2503 if (features[6] & (1 << 3)){ 2504 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2505 } 2506 // eSCO 2507 if (features[3] & (1<<7)){ 2508 conn->remote_supported_features[0] |= 1; 2509 } 2510 // Extended features 2511 if (features[7] & (1<<7)){ 2512 conn->remote_supported_features[0] |= 2; 2513 } 2514 } 2515 2516 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2517 // SSP Host 2518 if (features[0] & (1 << 0)){ 2519 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2520 } 2521 // SC Host 2522 if (features[0] & (1 << 3)){ 2523 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2524 } 2525 } 2526 2527 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2528 // SC Controller 2529 if (features[1] & (1 << 0)){ 2530 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2531 } 2532 } 2533 2534 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2535 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2536 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2537 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2538 if (conn->bonding_flags & BONDING_DEDICATED){ 2539 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2540 } 2541 } 2542 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2543 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2544 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2545 } 2546 2547 #endif 2548 2549 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2550 // handle BT initialization 2551 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2552 hci_initializing_event_handler(packet, size); 2553 } 2554 2555 // help with BT sleep 2556 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2557 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2558 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2559 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2560 hci_initializing_next_state(); 2561 } 2562 } 2563 2564 #ifdef ENABLE_CLASSIC 2565 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2566 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2567 conn->requested_security_level = LEVEL_0; 2568 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2569 hci_emit_security_level(conn->con_handle, security_level); 2570 2571 // dedicated bonding 2572 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2573 conn->bonding_flags &= ~BONDING_DEDICATED; 2574 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2575 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2576 // emit dedicated bonding complete, don't disconnect 2577 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2578 #else 2579 // request disconnect, event is emitted after disconnect 2580 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2581 #endif 2582 } 2583 } 2584 2585 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2586 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2587 conn->encryption_key_size = encryption_key_size; 2588 2589 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2590 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2591 hci_handle_mutual_authentication_completed(conn); 2592 } else { 2593 // otherwise trigger remote feature request and send authentication request 2594 hci_trigger_remote_features_for_connection(conn); 2595 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2596 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2597 } 2598 } 2599 } 2600 #endif 2601 2602 static void hci_store_local_supported_commands(const uint8_t * packet){ 2603 // create mapping table 2604 #define X(name, offset, bit) { offset, bit }, 2605 static struct { 2606 uint8_t byte_offset; 2607 uint8_t bit_position; 2608 } supported_hci_commands_map [] = { 2609 SUPPORTED_HCI_COMMANDS 2610 }; 2611 #undef X 2612 2613 // create names for debug purposes 2614 #ifdef ENABLE_LOG_DEBUG 2615 #define X(name, offset, bit) #name, 2616 static const char * command_names[] = { 2617 SUPPORTED_HCI_COMMANDS 2618 }; 2619 #undef X 2620 #endif 2621 2622 hci_stack->local_supported_commands = 0; 2623 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2624 uint16_t i; 2625 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2626 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2627 #ifdef ENABLE_LOG_DEBUG 2628 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); 2629 #else 2630 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2631 #endif 2632 hci_stack->local_supported_commands |= (1LU << i); 2633 } 2634 } 2635 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2636 } 2637 2638 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2639 UNUSED(size); 2640 2641 uint16_t manufacturer; 2642 #ifdef ENABLE_CLASSIC 2643 hci_con_handle_t handle; 2644 hci_connection_t * conn; 2645 #endif 2646 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2647 uint8_t status; 2648 #endif 2649 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2650 le_audio_cig_t * cig; 2651 #endif 2652 2653 // get num cmd packets - limit to 1 to reduce complexity 2654 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2655 2656 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2657 switch (opcode){ 2658 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2659 if (packet[5]) break; 2660 // terminate, name 248 chars 2661 packet[6+248] = 0; 2662 log_info("local name: %s", &packet[6]); 2663 break; 2664 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2665 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2666 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2667 uint16_t acl_len = little_endian_read_16(packet, 6); 2668 uint16_t sco_len = packet[8]; 2669 2670 // determine usable ACL/SCO payload size 2671 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2672 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2673 2674 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2675 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2676 2677 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2678 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2679 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2680 } 2681 break; 2682 case HCI_OPCODE_HCI_READ_RSSI: 2683 if (packet[5] == ERROR_CODE_SUCCESS){ 2684 uint8_t event[5]; 2685 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2686 event[1] = 3; 2687 (void)memcpy(&event[2], &packet[6], 3); 2688 hci_emit_event(event, sizeof(event), 1); 2689 } 2690 break; 2691 #ifdef ENABLE_BLE 2692 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2693 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2694 hci_stack->le_iso_packets_total_num = packet[11]; 2695 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2696 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2697 2698 /* fall through */ 2699 2700 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2701 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2702 hci_stack->le_acl_packets_total_num = packet[8]; 2703 // determine usable ACL payload size 2704 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2705 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2706 } 2707 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); 2708 break; 2709 #endif 2710 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2711 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2712 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2713 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2714 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); 2715 break; 2716 #endif 2717 #ifdef ENABLE_LE_CENTRAL 2718 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2719 hci_stack->le_whitelist_capacity = packet[6]; 2720 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2721 break; 2722 #endif 2723 #ifdef ENABLE_LE_PERIPHERAL 2724 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2725 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2726 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2727 break; 2728 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2729 if (hci_stack->le_advertising_set_in_current_command != 0) { 2730 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2731 hci_stack->le_advertising_set_in_current_command = 0; 2732 if (advertising_set == NULL) break; 2733 uint8_t adv_status = packet[6]; 2734 uint8_t tx_power = packet[7]; 2735 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 }; 2736 if (adv_status == 0){ 2737 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2738 } 2739 hci_emit_event(event, sizeof(event), 1); 2740 } 2741 break; 2742 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2743 if (hci_stack->le_advertising_set_in_current_command != 0) { 2744 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2745 hci_stack->le_advertising_set_in_current_command = 0; 2746 if (advertising_set == NULL) break; 2747 uint8_t adv_status = packet[5]; 2748 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2749 if (adv_status == 0){ 2750 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2751 } 2752 hci_emit_event(event, sizeof(event), 1); 2753 } 2754 break; 2755 #endif 2756 #endif 2757 case HCI_OPCODE_HCI_READ_BD_ADDR: 2758 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2759 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)); 2760 #ifdef ENABLE_CLASSIC 2761 if (hci_stack->link_key_db){ 2762 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2763 } 2764 #endif 2765 break; 2766 #ifdef ENABLE_CLASSIC 2767 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2768 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2769 break; 2770 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2771 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2772 if (status == ERROR_CODE_SUCCESS) { 2773 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2774 } else { 2775 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2776 } 2777 break; 2778 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2779 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2780 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2781 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2782 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2783 hci_emit_event(event, sizeof(event), 1); 2784 } 2785 break; 2786 #endif 2787 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2788 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2789 2790 #ifdef ENABLE_CLASSIC 2791 // determine usable ACL packet types based on host buffer size and supported features 2792 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2793 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2794 #endif 2795 // Classic/LE 2796 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2797 break; 2798 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2799 manufacturer = little_endian_read_16(packet, 10); 2800 // map Cypress & Infineon to Broadcom 2801 switch (manufacturer){ 2802 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2803 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2804 log_info("Treat Cypress/Infineon as Broadcom"); 2805 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2806 little_endian_store_16(packet, 10, manufacturer); 2807 break; 2808 default: 2809 break; 2810 } 2811 hci_stack->manufacturer = manufacturer; 2812 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2813 break; 2814 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2815 hci_store_local_supported_commands(packet); 2816 break; 2817 #ifdef ENABLE_CLASSIC 2818 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2819 if (packet[5]) return; 2820 hci_stack->synchronous_flow_control_enabled = 1; 2821 break; 2822 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2823 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2824 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2825 conn = hci_connection_for_handle(handle); 2826 if (conn != NULL) { 2827 uint8_t key_size = 0; 2828 if (status == 0){ 2829 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2830 log_info("Handle %04x key Size: %u", handle, key_size); 2831 } else { 2832 key_size = 1; 2833 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2834 } 2835 hci_handle_read_encryption_key_size_complete(conn, key_size); 2836 } 2837 break; 2838 // assert pairing complete event is emitted. 2839 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2840 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2841 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2842 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2843 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2844 // lookup connection by gap pairing addr 2845 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2846 if (conn == NULL) break; 2847 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2848 break; 2849 2850 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2851 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2852 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2853 uint8_t event[67]; 2854 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2855 event[1] = 65; 2856 (void)memset(&event[2], 0, 65); 2857 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2858 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2859 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2860 event[2] = 3; 2861 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2862 } else { 2863 event[2] = 1; 2864 } 2865 } 2866 hci_emit_event(event, sizeof(event), 0); 2867 break; 2868 } 2869 2870 // note: only needed if user does not provide OOB data 2871 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2872 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2873 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2874 if (conn == NULL) break; 2875 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2876 break; 2877 #endif 2878 #endif 2879 #ifdef ENABLE_BLE 2880 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2881 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2882 // lookup CIG 2883 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2884 if (cig != NULL){ 2885 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2886 uint8_t i = 0; 2887 if (status == ERROR_CODE_SUCCESS){ 2888 // assign CIS handles to pre-allocated CIS 2889 btstack_linked_list_iterator_t it; 2890 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2891 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2892 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2893 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2894 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2895 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2896 iso_stream->cis_handle = cis_handle; 2897 cig->cis_con_handles[i] = cis_handle; 2898 i++; 2899 } 2900 } 2901 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2902 hci_emit_cig_created(cig, status); 2903 } else { 2904 hci_emit_cig_created(cig, status); 2905 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2906 } 2907 } 2908 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2909 break; 2910 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2911 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2912 if (status != ERROR_CODE_SUCCESS){ 2913 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2914 } 2915 break; 2916 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2917 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2918 if (status != ERROR_CODE_SUCCESS){ 2919 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2920 } 2921 break; 2922 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2923 // lookup BIG by state 2924 btstack_linked_list_iterator_t it; 2925 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2926 while (btstack_linked_list_iterator_has_next(&it)) { 2927 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2928 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2929 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2930 if (status == ERROR_CODE_SUCCESS){ 2931 big->state_vars.next_bis++; 2932 if (big->state_vars.next_bis == big->num_bis){ 2933 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2934 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2935 } else { 2936 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2937 } 2938 } else { 2939 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2940 big->state_vars.status = status; 2941 } 2942 return; 2943 } 2944 } 2945 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2946 while (btstack_linked_list_iterator_has_next(&it)) { 2947 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2948 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2949 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2950 if (status == ERROR_CODE_SUCCESS){ 2951 big_sync->state_vars.next_bis++; 2952 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2953 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2954 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2955 } else { 2956 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2957 } 2958 } else { 2959 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2960 big_sync->state_vars.status = status; 2961 } 2962 return; 2963 } 2964 } 2965 // Lookup CIS via active group operation 2966 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2967 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2968 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2969 2970 // lookup CIS by state 2971 btstack_linked_list_iterator_t it; 2972 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2973 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2974 while (btstack_linked_list_iterator_has_next(&it)){ 2975 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2976 handle = iso_stream->cis_handle; 2977 bool emit_cis_created = false; 2978 switch (iso_stream->state){ 2979 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2980 if (status != ERROR_CODE_SUCCESS){ 2981 emit_cis_created = true; 2982 break; 2983 } 2984 if (iso_stream->max_sdu_c_to_p > 0){ 2985 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2986 } else { 2987 emit_cis_created = true; 2988 } 2989 break; 2990 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2991 emit_cis_created = true; 2992 break; 2993 default: 2994 break; 2995 } 2996 if (emit_cis_created){ 2997 hci_cis_handle_created(iso_stream, status); 2998 } 2999 } 3000 } else { 3001 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3002 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3003 if (cig != NULL) { 3004 // emit cis created if all ISO Paths have been created 3005 // assume we are central 3006 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3007 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3008 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3009 // if outgoing has been setup, or incoming was setup but outgoing not required 3010 if ((cis_direction == 1) || (outgoing_needed == false)){ 3011 // lookup iso stream by cig/cis 3012 while (btstack_linked_list_iterator_has_next(&it)) { 3013 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3014 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3015 hci_cis_handle_created(iso_stream, status); 3016 } 3017 } 3018 } 3019 // next state 3020 cig->state_vars.next_cis++; 3021 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3022 } 3023 } 3024 } 3025 break; 3026 } 3027 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3028 // lookup BIG by state 3029 btstack_linked_list_iterator_t it; 3030 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3031 while (btstack_linked_list_iterator_has_next(&it)) { 3032 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3033 uint8_t big_handle = big_sync->big_handle; 3034 switch (big_sync->state){ 3035 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3036 btstack_linked_list_iterator_remove(&it); 3037 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3038 return; 3039 default: 3040 btstack_linked_list_iterator_remove(&it); 3041 hci_emit_big_sync_stopped(big_handle); 3042 return; 3043 } 3044 } 3045 break; 3046 } 3047 #endif 3048 #endif 3049 default: 3050 break; 3051 } 3052 } 3053 3054 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3055 UNUSED(size); 3056 3057 // get num cmd packets - limit to 1 to reduce complexity 3058 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3059 3060 // get opcode and command status 3061 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3062 3063 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3064 uint8_t status = hci_event_command_status_get_status(packet); 3065 #endif 3066 3067 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3068 bd_addr_type_t addr_type; 3069 bd_addr_t addr; 3070 #endif 3071 3072 switch (opcode){ 3073 #ifdef ENABLE_CLASSIC 3074 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3075 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3076 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3077 #endif 3078 #ifdef ENABLE_LE_CENTRAL 3079 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3080 #endif 3081 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3082 addr_type = hci_stack->outgoing_addr_type; 3083 memcpy(addr, hci_stack->outgoing_addr, 6); 3084 3085 // reset outgoing address info 3086 memset(hci_stack->outgoing_addr, 0, 6); 3087 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3088 3089 // on error 3090 if (status != ERROR_CODE_SUCCESS){ 3091 #ifdef ENABLE_LE_CENTRAL 3092 if (hci_is_le_connection_type(addr_type)){ 3093 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3094 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3095 } 3096 #endif 3097 // error => outgoing connection failed 3098 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3099 if (conn != NULL){ 3100 hci_handle_connection_failed(conn, status); 3101 } 3102 } 3103 break; 3104 #endif 3105 #ifdef ENABLE_CLASSIC 3106 case HCI_OPCODE_HCI_INQUIRY: 3107 if (status == ERROR_CODE_SUCCESS) { 3108 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3109 } else { 3110 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3111 } 3112 break; 3113 #endif 3114 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3115 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3116 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3117 if (status == ERROR_CODE_SUCCESS){ 3118 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3119 } else { 3120 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3121 } 3122 break; 3123 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3124 default: 3125 break; 3126 } 3127 } 3128 3129 #ifdef ENABLE_BLE 3130 static void event_handle_le_connection_complete(const uint8_t * packet){ 3131 bd_addr_t addr; 3132 bd_addr_type_t addr_type; 3133 hci_connection_t * conn; 3134 3135 // read fields 3136 uint8_t status = packet[3]; 3137 hci_role_t role = (hci_role_t) packet[6]; 3138 3139 // support different connection complete events 3140 uint16_t conn_interval; 3141 switch (packet[2]){ 3142 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3143 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3144 break; 3145 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3146 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3147 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3148 break; 3149 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3150 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3151 break; 3152 #endif 3153 default: 3154 btstack_unreachable(); 3155 return; 3156 } 3157 3158 // Connection management 3159 reverse_bd_addr(&packet[8], addr); 3160 addr_type = (bd_addr_type_t)packet[7]; 3161 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3162 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3163 3164 #ifdef ENABLE_LE_CENTRAL 3165 // handle error: error is reported only to the initiator -> outgoing connection 3166 if (status){ 3167 3168 // handle cancelled outgoing connection 3169 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3170 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3171 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3172 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3173 // reset state 3174 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3175 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3176 // get outgoing connection conn struct for direct connect 3177 conn = gap_get_outgoing_connection(); 3178 } 3179 3180 // outgoing le connection establishment is done 3181 if (conn){ 3182 // remove entry 3183 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3184 btstack_memory_hci_connection_free( conn ); 3185 } 3186 return; 3187 } 3188 #endif 3189 3190 // on success, both hosts receive connection complete event 3191 if (role == HCI_ROLE_MASTER){ 3192 #ifdef ENABLE_LE_CENTRAL 3193 // if we're master on an le connection, it was an outgoing connection and we're done with it 3194 // note: no hci_connection_t object exists yet for connect with whitelist 3195 if (hci_is_le_connection_type(addr_type)){ 3196 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3197 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3198 } 3199 #endif 3200 } else { 3201 #ifdef ENABLE_LE_PERIPHERAL 3202 // if we're slave, it was an incoming connection, advertisements have stopped 3203 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3204 #endif 3205 } 3206 3207 // LE connections are auto-accepted, so just create a connection if there isn't one already 3208 if (!conn){ 3209 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3210 } 3211 3212 // no memory, sorry. 3213 if (!conn){ 3214 return; 3215 } 3216 3217 conn->state = OPEN; 3218 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3219 conn->le_connection_interval = conn_interval; 3220 3221 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3222 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3223 3224 #ifdef ENABLE_LE_PERIPHERAL 3225 if (role == HCI_ROLE_SLAVE){ 3226 hci_update_advertisements_enabled_for_current_roles(); 3227 } 3228 #endif 3229 3230 // init unenhanced att bearer mtu 3231 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3232 conn->att_connection.mtu_exchanged = false; 3233 3234 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3235 3236 // restart timer 3237 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3238 // btstack_run_loop_add_timer(&conn->timeout); 3239 3240 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3241 3242 hci_emit_nr_connections_changed(); 3243 } 3244 #endif 3245 3246 #ifdef ENABLE_CLASSIC 3247 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){ 3248 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3249 // LEVEL_4 is tested by l2cap 3250 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3251 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3252 if (level >= LEVEL_3){ 3253 // MITM not possible without keyboard or display 3254 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3255 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3256 3257 // MITM possible if one side has keyboard and the other has keyboard or display 3258 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3259 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3260 3261 // MITM not possible if one side has only display and other side has no keyboard 3262 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3263 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3264 } 3265 // LEVEL 2 requires SSP, which is a given 3266 return true; 3267 } 3268 3269 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3270 // get requested security level 3271 gap_security_level_t requested_security_level = conn->requested_security_level; 3272 if (hci_stack->gap_secure_connections_only_mode){ 3273 requested_security_level = LEVEL_4; 3274 } 3275 3276 // assess security: LEVEL 4 requires SC 3277 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3278 if ((requested_security_level == LEVEL_4) && 3279 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3280 !hci_remote_sc_enabled(conn)){ 3281 log_info("Level 4 required, but SC not supported -> abort"); 3282 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3283 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3284 return; 3285 } 3286 3287 // assess security based on io capabilities 3288 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3289 // responder: fully validate io caps of both sides as well as OOB data 3290 bool security_possible = false; 3291 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3292 3293 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3294 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3295 // so we merge the OOB data availability 3296 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3297 if (conn->classic_oob_c_192 != NULL){ 3298 have_oob_data |= 1; 3299 } 3300 if (conn->classic_oob_c_256 != NULL){ 3301 have_oob_data |= 2; 3302 } 3303 // for up to Level 3, either P-192 as well as P-256 will do 3304 // 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 3305 // if remote does not SC, we should not receive P-256 data either 3306 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3307 security_possible = true; 3308 } 3309 // for Level 4, P-256 is needed 3310 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3311 security_possible = true; 3312 } 3313 #endif 3314 3315 if (security_possible == false){ 3316 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3317 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3318 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3319 return; 3320 } 3321 } else { 3322 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3323 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3324 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3325 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3326 log_info("Level 3+ required, but no input/output -> abort"); 3327 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3328 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3329 return; 3330 } 3331 #endif 3332 #endif 3333 } 3334 3335 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3336 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3337 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3338 } else { 3339 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3340 } 3341 #endif 3342 } 3343 3344 #endif 3345 3346 static void event_handler(uint8_t *packet, uint16_t size){ 3347 3348 uint16_t event_length = packet[1]; 3349 3350 // assert packet is complete 3351 if (size != (event_length + 2u)){ 3352 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3353 return; 3354 } 3355 3356 hci_con_handle_t handle; 3357 hci_connection_t * conn; 3358 int i; 3359 3360 #ifdef ENABLE_CLASSIC 3361 hci_link_type_t link_type; 3362 bd_addr_t addr; 3363 bd_addr_type_t addr_type; 3364 #endif 3365 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3366 hci_iso_stream_t * iso_stream; 3367 le_audio_big_t * big; 3368 le_audio_big_sync_t * big_sync; 3369 #endif 3370 3371 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3372 3373 switch (hci_event_packet_get_type(packet)) { 3374 3375 case HCI_EVENT_COMMAND_COMPLETE: 3376 handle_command_complete_event(packet, size); 3377 break; 3378 3379 case HCI_EVENT_COMMAND_STATUS: 3380 handle_command_status_event(packet, size); 3381 break; 3382 3383 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3384 if (size < 3) return; 3385 uint16_t num_handles = packet[2]; 3386 if (size != (3u + num_handles * 4u)) return; 3387 #ifdef ENABLE_CLASSIC 3388 bool notify_sco = false; 3389 #endif 3390 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3391 bool notify_iso = false; 3392 #endif 3393 uint16_t offset = 3; 3394 for (i=0; i<num_handles;i++){ 3395 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3396 offset += 2u; 3397 uint16_t num_packets = little_endian_read_16(packet, offset); 3398 offset += 2u; 3399 3400 conn = hci_connection_for_handle(handle); 3401 if (conn != NULL) { 3402 3403 if (conn->num_packets_sent >= num_packets) { 3404 conn->num_packets_sent -= num_packets; 3405 } else { 3406 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3407 conn->num_packets_sent = 0; 3408 } 3409 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3410 #ifdef ENABLE_CLASSIC 3411 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3412 notify_sco = true; 3413 } 3414 #endif 3415 } 3416 3417 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3418 hci_controller_dump_packets(); 3419 #endif 3420 3421 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3422 if (conn == NULL){ 3423 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3424 if (iso_stream != NULL){ 3425 if (iso_stream->num_packets_sent >= num_packets) { 3426 iso_stream->num_packets_sent -= num_packets; 3427 } else { 3428 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3429 iso_stream->num_packets_sent = 0; 3430 } 3431 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3432 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3433 if (big != NULL){ 3434 big->num_completed_timestamp_current_valid = true; 3435 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3436 } 3437 } 3438 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3439 num_packets, handle, iso_stream->num_packets_sent); 3440 notify_iso = true; 3441 } 3442 } 3443 #endif 3444 } 3445 3446 #ifdef ENABLE_CLASSIC 3447 if (notify_sco){ 3448 hci_notify_if_sco_can_send_now(); 3449 } 3450 #endif 3451 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3452 if (notify_iso){ 3453 hci_iso_notify_can_send_now(); 3454 } 3455 #endif 3456 break; 3457 } 3458 3459 #ifdef ENABLE_CLASSIC 3460 case HCI_EVENT_FLUSH_OCCURRED: 3461 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3462 handle = hci_event_flush_occurred_get_handle(packet); 3463 conn = hci_connection_for_handle(handle); 3464 if (conn) { 3465 log_info("Flush occurred, disconnect 0x%04x", handle); 3466 conn->state = SEND_DISCONNECT; 3467 } 3468 break; 3469 3470 case HCI_EVENT_INQUIRY_COMPLETE: 3471 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3472 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3473 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3474 hci_emit_event(event, sizeof(event), 1); 3475 } 3476 break; 3477 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3478 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3479 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3480 } 3481 break; 3482 case HCI_EVENT_CONNECTION_REQUEST: 3483 reverse_bd_addr(&packet[2], addr); 3484 link_type = (hci_link_type_t) packet[11]; 3485 3486 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3487 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3488 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3489 bd_addr_copy(hci_stack->decline_addr, addr); 3490 break; 3491 } 3492 3493 if (hci_stack->gap_classic_accept_callback != NULL){ 3494 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3495 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3496 bd_addr_copy(hci_stack->decline_addr, addr); 3497 break; 3498 } 3499 } 3500 3501 // TODO: eval COD 8-10 3502 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3503 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3504 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3505 if (!conn) { 3506 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3507 } 3508 if (!conn) { 3509 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3510 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3511 bd_addr_copy(hci_stack->decline_addr, addr); 3512 hci_run(); 3513 // avoid event to higher layer 3514 return; 3515 } 3516 conn->state = RECEIVED_CONNECTION_REQUEST; 3517 // store info about eSCO 3518 if (link_type == HCI_LINK_TYPE_ESCO){ 3519 conn->remote_supported_features[0] |= 1; 3520 } 3521 hci_run(); 3522 break; 3523 3524 case HCI_EVENT_CONNECTION_COMPLETE: 3525 // Connection management 3526 reverse_bd_addr(&packet[5], addr); 3527 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3528 addr_type = BD_ADDR_TYPE_ACL; 3529 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3530 if (conn) { 3531 switch (conn->state){ 3532 // expected states 3533 case ACCEPTED_CONNECTION_REQUEST: 3534 case SENT_CREATE_CONNECTION: 3535 break; 3536 // unexpected state -> ignore 3537 default: 3538 // don't forward event to app 3539 return; 3540 } 3541 if (!packet[2]){ 3542 conn->state = OPEN; 3543 conn->con_handle = little_endian_read_16(packet, 3); 3544 3545 // trigger write supervision timeout if we're master 3546 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3547 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3548 } 3549 3550 // trigger write automatic flush timeout 3551 if (hci_stack->automatic_flush_timeout != 0){ 3552 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3553 } 3554 3555 // restart timer 3556 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3557 btstack_run_loop_add_timer(&conn->timeout); 3558 3559 // trigger remote features for dedicated bonding 3560 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3561 hci_trigger_remote_features_for_connection(conn); 3562 } 3563 3564 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3565 3566 hci_emit_nr_connections_changed(); 3567 } else { 3568 // connection failed 3569 hci_handle_connection_failed(conn, packet[2]); 3570 } 3571 } 3572 break; 3573 3574 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3575 reverse_bd_addr(&packet[5], addr); 3576 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3577 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3578 btstack_assert(conn != NULL); 3579 3580 if (packet[2] != ERROR_CODE_SUCCESS){ 3581 // connection failed, remove entry 3582 hci_handle_connection_failed(conn, packet[2]); 3583 break; 3584 } 3585 3586 conn->state = OPEN; 3587 conn->con_handle = little_endian_read_16(packet, 3); 3588 3589 #ifdef ENABLE_SCO_OVER_HCI 3590 // update SCO 3591 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3592 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3593 } 3594 // trigger can send now 3595 if (hci_have_usb_transport()){ 3596 hci_stack->sco_can_send_now = true; 3597 } 3598 #endif 3599 #ifdef HAVE_SCO_TRANSPORT 3600 // configure sco transport 3601 if (hci_stack->sco_transport != NULL){ 3602 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3603 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3604 } 3605 #endif 3606 break; 3607 3608 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3609 handle = little_endian_read_16(packet, 3); 3610 conn = hci_connection_for_handle(handle); 3611 if (!conn) break; 3612 if (!packet[2]){ 3613 const uint8_t * features = &packet[5]; 3614 hci_handle_remote_features_page_0(conn, features); 3615 3616 // read extended features if possible 3617 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3618 && ((conn->remote_supported_features[0] & 2) != 0)) { 3619 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3620 break; 3621 } 3622 } 3623 hci_handle_remote_features_received(conn); 3624 break; 3625 3626 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3627 handle = little_endian_read_16(packet, 3); 3628 conn = hci_connection_for_handle(handle); 3629 if (!conn) break; 3630 // status = ok, page = 1 3631 if (!packet[2]) { 3632 uint8_t page_number = packet[5]; 3633 uint8_t maximum_page_number = packet[6]; 3634 const uint8_t * features = &packet[7]; 3635 bool done = false; 3636 switch (page_number){ 3637 case 1: 3638 hci_handle_remote_features_page_1(conn, features); 3639 if (maximum_page_number >= 2){ 3640 // get Secure Connections (Controller) from Page 2 if available 3641 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3642 } else { 3643 // otherwise, assume SC (Controller) == SC (Host) 3644 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3645 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3646 } 3647 done = true; 3648 } 3649 break; 3650 case 2: 3651 hci_handle_remote_features_page_2(conn, features); 3652 done = true; 3653 break; 3654 default: 3655 break; 3656 } 3657 if (!done) break; 3658 } 3659 hci_handle_remote_features_received(conn); 3660 break; 3661 3662 case HCI_EVENT_LINK_KEY_REQUEST: 3663 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3664 hci_event_link_key_request_get_bd_addr(packet, addr); 3665 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3666 if (!conn) break; 3667 3668 // lookup link key in db if not cached 3669 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3670 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3671 } 3672 3673 // response sent by hci_run() 3674 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3675 #endif 3676 break; 3677 3678 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3679 hci_event_link_key_request_get_bd_addr(packet, addr); 3680 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3681 if (!conn) break; 3682 3683 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3684 3685 // CVE-2020-26555: ignore NULL link key 3686 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3687 if (btstack_is_null(&packet[8], 16)) break; 3688 3689 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3690 // Change Connection Encryption keeps link key type 3691 if (link_key_type != CHANGED_COMBINATION_KEY){ 3692 conn->link_key_type = link_key_type; 3693 } 3694 3695 // cache link key. link keys stored in little-endian format for legacy reasons 3696 memcpy(&conn->link_key, &packet[8], 16); 3697 3698 // only store link key: 3699 // - if bondable enabled 3700 if (hci_stack->bondable == false) break; 3701 // - if security level sufficient 3702 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3703 // - for SSP, also check if remote side requested bonding as well 3704 if (conn->link_key_type != COMBINATION_KEY){ 3705 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3706 if (!remote_bonding){ 3707 break; 3708 } 3709 } 3710 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3711 break; 3712 } 3713 3714 case HCI_EVENT_PIN_CODE_REQUEST: 3715 hci_event_pin_code_request_get_bd_addr(packet, addr); 3716 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3717 if (!conn) break; 3718 3719 hci_pairing_started(conn, false); 3720 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3721 if (!hci_stack->bondable ){ 3722 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3723 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3724 hci_run(); 3725 return; 3726 } 3727 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3728 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3729 log_info("Level 4 required, but SC not supported -> abort"); 3730 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3731 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3732 hci_run(); 3733 return; 3734 } 3735 break; 3736 3737 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3738 hci_event_io_capability_response_get_bd_addr(packet, addr); 3739 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3740 if (!conn) break; 3741 3742 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3743 hci_pairing_started(conn, true); 3744 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3745 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3746 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3747 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3748 #endif 3749 break; 3750 3751 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3752 hci_event_io_capability_response_get_bd_addr(packet, addr); 3753 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3754 if (!conn) break; 3755 3756 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3757 hci_connection_timestamp(conn); 3758 hci_pairing_started(conn, true); 3759 break; 3760 3761 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3762 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3763 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3764 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3765 if (!conn) break; 3766 3767 hci_connection_timestamp(conn); 3768 3769 hci_pairing_started(conn, true); 3770 3771 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3772 break; 3773 #endif 3774 3775 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3776 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3777 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3778 if (!conn) break; 3779 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3780 if (hci_stack->ssp_auto_accept){ 3781 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3782 }; 3783 } else { 3784 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3785 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3786 // don't forward event to app 3787 hci_run(); 3788 return; 3789 } 3790 break; 3791 3792 case HCI_EVENT_USER_PASSKEY_REQUEST: 3793 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3794 if (hci_stack->ssp_auto_accept){ 3795 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3796 }; 3797 break; 3798 3799 case HCI_EVENT_MODE_CHANGE: 3800 handle = hci_event_mode_change_get_handle(packet); 3801 conn = hci_connection_for_handle(handle); 3802 if (!conn) break; 3803 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3804 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3805 break; 3806 #endif 3807 3808 case HCI_EVENT_ENCRYPTION_CHANGE: 3809 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3810 handle = hci_event_encryption_change_get_connection_handle(packet); 3811 conn = hci_connection_for_handle(handle); 3812 if (!conn) break; 3813 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3814 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3815 if (encryption_enabled){ 3816 if (hci_is_le_connection(conn)){ 3817 // For LE, we accept connection as encrypted 3818 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3819 } 3820 #ifdef ENABLE_CLASSIC 3821 else { 3822 3823 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3824 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3825 bool connected_uses_aes_ccm = encryption_enabled == 2; 3826 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3827 log_info("SC during pairing, but only E0 now -> abort"); 3828 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3829 break; 3830 } 3831 3832 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3833 if (connected_uses_aes_ccm){ 3834 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3835 } 3836 3837 #ifdef ENABLE_TESTING_SUPPORT 3838 // work around for issue with PTS dongle 3839 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3840 #endif 3841 // validate encryption key size 3842 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3843 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3844 // already got encryption key size 3845 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3846 } else { 3847 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3848 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3849 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3850 } else { 3851 // if not, pretend everything is perfect 3852 hci_handle_read_encryption_key_size_complete(conn, 16); 3853 } 3854 } 3855 } 3856 #endif 3857 } else { 3858 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3859 } 3860 } else { 3861 uint8_t status = hci_event_encryption_change_get_status(packet); 3862 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3863 conn->bonding_flags &= ~BONDING_DEDICATED; 3864 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3865 conn->bonding_status = status; 3866 } 3867 } 3868 3869 break; 3870 3871 #ifdef ENABLE_CLASSIC 3872 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3873 handle = hci_event_authentication_complete_get_connection_handle(packet); 3874 conn = hci_connection_for_handle(handle); 3875 if (!conn) break; 3876 3877 // clear authentication active flag 3878 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3879 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3880 3881 // authenticated only if auth status == 0 3882 if (hci_event_authentication_complete_get_status(packet) == 0){ 3883 // authenticated 3884 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3885 3886 // If not already encrypted, start encryption 3887 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3888 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3889 break; 3890 } 3891 } 3892 3893 // emit updated security level (will be 0 if not authenticated) 3894 hci_handle_mutual_authentication_completed(conn); 3895 break; 3896 3897 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3898 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3899 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3900 if (!conn) break; 3901 3902 // treat successfully paired connection as authenticated 3903 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3904 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3905 } 3906 3907 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3908 break; 3909 #endif 3910 3911 // HCI_EVENT_DISCONNECTION_COMPLETE 3912 // has been split, to first notify stack before shutting connection down 3913 // see end of function, too. 3914 case HCI_EVENT_DISCONNECTION_COMPLETE: 3915 if (packet[2]) break; // status != 0 3916 handle = little_endian_read_16(packet, 3); 3917 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3918 if (hci_stack->acl_fragmentation_total_size > 0u) { 3919 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3920 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3921 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3922 hci_stack->acl_fragmentation_total_size = 0; 3923 hci_stack->acl_fragmentation_pos = 0; 3924 if (release_buffer){ 3925 hci_release_packet_buffer(); 3926 } 3927 } 3928 } 3929 3930 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3931 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3932 if (hci_stack->iso_fragmentation_total_size > 0u) { 3933 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3934 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3935 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3936 hci_stack->iso_fragmentation_total_size = 0; 3937 hci_stack->iso_fragmentation_pos = 0; 3938 if (release_buffer){ 3939 hci_release_packet_buffer(); 3940 } 3941 } 3942 } 3943 3944 // finalize iso stream for CIS handle 3945 iso_stream = hci_iso_stream_for_con_handle(handle); 3946 if (iso_stream != NULL){ 3947 hci_iso_stream_finalize(iso_stream); 3948 break; 3949 } 3950 3951 // finalize iso stream(s) for ACL handle 3952 btstack_linked_list_iterator_t it; 3953 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3954 while (btstack_linked_list_iterator_has_next(&it)){ 3955 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3956 if (iso_stream->acl_handle == handle ) { 3957 hci_iso_stream_finalize(iso_stream); 3958 } 3959 } 3960 #endif 3961 3962 conn = hci_connection_for_handle(handle); 3963 if (!conn) break; 3964 #ifdef ENABLE_CLASSIC 3965 // pairing failed if it was ongoing 3966 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3967 #endif 3968 3969 // emit dedicatd bonding event 3970 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3971 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3972 } 3973 3974 // mark connection for shutdown, stop timers, reset state 3975 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3976 hci_connection_stop_timer(conn); 3977 hci_connection_init(conn); 3978 3979 #ifdef ENABLE_BLE 3980 #ifdef ENABLE_LE_PERIPHERAL 3981 // re-enable advertisements for le connections if active 3982 if (hci_is_le_connection(conn)){ 3983 hci_update_advertisements_enabled_for_current_roles(); 3984 } 3985 #endif 3986 #endif 3987 break; 3988 3989 case HCI_EVENT_HARDWARE_ERROR: 3990 log_error("Hardware Error: 0x%02x", packet[2]); 3991 if (hci_stack->hardware_error_callback){ 3992 (*hci_stack->hardware_error_callback)(packet[2]); 3993 } else { 3994 // if no special requests, just reboot stack 3995 hci_power_control_off(); 3996 hci_power_control_on(); 3997 } 3998 break; 3999 4000 #ifdef ENABLE_CLASSIC 4001 case HCI_EVENT_ROLE_CHANGE: 4002 if (packet[2]) break; // status != 0 4003 reverse_bd_addr(&packet[3], addr); 4004 addr_type = BD_ADDR_TYPE_ACL; 4005 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4006 if (!conn) break; 4007 conn->role = (hci_role_t) packet[9]; 4008 break; 4009 #endif 4010 4011 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4012 // release packet buffer only for asynchronous transport and if there are not further fragments 4013 if (hci_transport_synchronous()) { 4014 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4015 return; // instead of break: to avoid re-entering hci_run() 4016 } 4017 hci_stack->acl_fragmentation_tx_active = 0; 4018 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4019 hci_stack->iso_fragmentation_tx_active = 0; 4020 if (hci_stack->iso_fragmentation_total_size) break; 4021 #endif 4022 if (hci_stack->acl_fragmentation_total_size) break; 4023 hci_release_packet_buffer(); 4024 4025 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4026 hci_iso_notify_can_send_now(); 4027 #endif 4028 // L2CAP receives this event via the hci_emit_event below 4029 4030 #ifdef ENABLE_CLASSIC 4031 // For SCO, we do the can_send_now_check here 4032 hci_notify_if_sco_can_send_now(); 4033 #endif 4034 break; 4035 4036 #ifdef ENABLE_CLASSIC 4037 case HCI_EVENT_SCO_CAN_SEND_NOW: 4038 // For SCO, we do the can_send_now_check here 4039 hci_stack->sco_can_send_now = true; 4040 hci_notify_if_sco_can_send_now(); 4041 return; 4042 4043 // explode inquriy results for easier consumption 4044 case HCI_EVENT_INQUIRY_RESULT: 4045 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4046 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4047 gap_inquiry_explode(packet, size); 4048 break; 4049 #endif 4050 4051 #ifdef ENABLE_BLE 4052 case HCI_EVENT_LE_META: 4053 switch (packet[2]){ 4054 #ifdef ENABLE_LE_CENTRAL 4055 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4056 if (!hci_stack->le_scanning_enabled) break; 4057 le_handle_advertisement_report(packet, size); 4058 break; 4059 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4060 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4061 if (!hci_stack->le_scanning_enabled) break; 4062 le_handle_extended_advertisement_report(packet, size); 4063 break; 4064 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4065 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4066 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4067 break; 4068 #endif 4069 #endif 4070 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4071 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4072 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4073 event_handle_le_connection_complete(packet); 4074 break; 4075 4076 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4077 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4078 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4079 conn = hci_connection_for_handle(handle); 4080 if (!conn) break; 4081 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4082 break; 4083 4084 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4085 // connection 4086 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4087 conn = hci_connection_for_handle(handle); 4088 if (conn) { 4089 // read arguments 4090 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4091 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4092 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4093 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4094 4095 // validate against current connection parameter range 4096 le_connection_parameter_range_t existing_range; 4097 gap_get_connection_parameter_range(&existing_range); 4098 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4099 if (update_parameter){ 4100 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4101 conn->le_conn_interval_min = le_conn_interval_min; 4102 conn->le_conn_interval_max = le_conn_interval_max; 4103 conn->le_conn_latency = le_conn_latency; 4104 conn->le_supervision_timeout = le_supervision_timeout; 4105 } else { 4106 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4107 } 4108 } 4109 break; 4110 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4111 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4112 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4113 conn = hci_connection_for_handle(handle); 4114 if (conn) { 4115 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4116 } 4117 break; 4118 #endif 4119 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4120 case HCI_SUBEVENT_LE_CIS_REQUEST: 4121 // incoming CIS request, allocate iso stream object and cache metadata 4122 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4123 hci_subevent_le_cis_request_get_cig_id(packet), 4124 hci_subevent_le_cis_request_get_cis_id(packet)); 4125 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4126 if (iso_stream != NULL){ 4127 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4128 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4129 } 4130 break; 4131 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4132 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4133 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4134 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4135 iso_stream = hci_iso_stream_for_con_handle(handle); 4136 btstack_assert(iso_stream != NULL); 4137 // track SDU 4138 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4139 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4140 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4141 // CIS Accept by Peripheral 4142 if (status == ERROR_CODE_SUCCESS){ 4143 if (iso_stream->max_sdu_p_to_c > 0){ 4144 // we're peripheral and we will send data 4145 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4146 } else { 4147 // we're peripheral and we will only receive data 4148 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4149 } 4150 } else { 4151 hci_cis_handle_created(iso_stream, status); 4152 } 4153 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4154 } else { 4155 // CIG Setup by Central 4156 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4157 btstack_assert(cig != NULL); 4158 // update iso stream state 4159 if (status == ERROR_CODE_SUCCESS){ 4160 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4161 } else { 4162 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4163 } 4164 // update cig state 4165 uint8_t i; 4166 for (i=0;i<cig->num_cis;i++){ 4167 if (cig->cis_con_handles[i] == handle){ 4168 cig->cis_setup_active[i] = false; 4169 if (status == ERROR_CODE_SUCCESS){ 4170 cig->cis_established[i] = true; 4171 } else { 4172 hci_cis_handle_created(iso_stream, status); 4173 } 4174 } 4175 } 4176 4177 // trigger iso path setup if complete 4178 bool cis_setup_active = false; 4179 for (i=0;i<cig->num_cis;i++){ 4180 cis_setup_active |= cig->cis_setup_active[i]; 4181 } 4182 if (cis_setup_active == false){ 4183 cig->state_vars.next_cis = 0; 4184 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4185 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4186 } 4187 } 4188 } 4189 break; 4190 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4191 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4192 big = hci_big_for_handle(packet[4]); 4193 if (big != NULL){ 4194 uint8_t status = packet[3]; 4195 if (status == ERROR_CODE_SUCCESS){ 4196 // store bis_con_handles and trigger iso path setup 4197 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4198 uint8_t i; 4199 for (i=0;i<num_bis;i++){ 4200 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4201 big->bis_con_handles[i] = bis_handle; 4202 // assign bis handle 4203 btstack_linked_list_iterator_t it; 4204 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4205 while (btstack_linked_list_iterator_has_next(&it)){ 4206 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4207 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4208 (iso_stream->group_id == big->big_handle)){ 4209 iso_stream->cis_handle = bis_handle; 4210 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4211 break; 4212 } 4213 } 4214 } 4215 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4216 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4217 big->state_vars.next_bis = 0; 4218 } 4219 } else { 4220 // create BIG failed or has been stopped by us 4221 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4222 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4223 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4224 hci_emit_big_created(big, status); 4225 } else { 4226 hci_emit_big_terminated(big); 4227 } 4228 } 4229 } 4230 break; 4231 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4232 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4233 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4234 if (big != NULL){ 4235 // finalize associated ISO streams 4236 btstack_linked_list_iterator_t it; 4237 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4238 while (btstack_linked_list_iterator_has_next(&it)){ 4239 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4240 if (iso_stream->group_id == big->big_handle){ 4241 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4242 btstack_linked_list_iterator_remove(&it); 4243 btstack_memory_hci_iso_stream_free(iso_stream); 4244 } 4245 } 4246 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4247 switch (big->state){ 4248 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4249 hci_emit_big_created(big, big->state_vars.status); 4250 break; 4251 default: 4252 hci_emit_big_terminated(big); 4253 break; 4254 } 4255 } 4256 break; 4257 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4258 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4259 big_sync = hci_big_sync_for_handle(packet[4]); 4260 if (big_sync != NULL){ 4261 uint8_t status = packet[3]; 4262 uint8_t big_handle = packet[4]; 4263 if (status == ERROR_CODE_SUCCESS){ 4264 // store bis_con_handles and trigger iso path setup 4265 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4266 uint8_t i; 4267 for (i=0;i<num_bis;i++){ 4268 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4269 } 4270 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4271 // trigger iso path setup 4272 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4273 big_sync->state_vars.next_bis = 0; 4274 } 4275 } else { 4276 // create BIG Sync failed or has been stopped by us 4277 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4278 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4279 hci_emit_big_sync_created(big_sync, status); 4280 } else { 4281 hci_emit_big_sync_stopped(big_handle); 4282 } 4283 } 4284 } 4285 break; 4286 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4287 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4288 big_sync = hci_big_sync_for_handle(packet[4]); 4289 if (big_sync != NULL){ 4290 uint8_t big_handle = packet[4]; 4291 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4292 hci_emit_big_sync_stopped(big_handle); 4293 } 4294 break; 4295 #endif 4296 default: 4297 break; 4298 } 4299 break; 4300 #endif 4301 case HCI_EVENT_VENDOR_SPECIFIC: 4302 // Vendor specific commands often create vendor specific event instead of num completed packets 4303 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4304 switch (hci_stack->manufacturer){ 4305 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4306 hci_stack->num_cmd_packets = 1; 4307 break; 4308 default: 4309 break; 4310 } 4311 break; 4312 default: 4313 break; 4314 } 4315 4316 handle_event_for_current_stack_state(packet, size); 4317 4318 // notify upper stack 4319 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4320 4321 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4322 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4323 handle = little_endian_read_16(packet, 3); 4324 hci_connection_t * aConn = hci_connection_for_handle(handle); 4325 // discard connection if app did not trigger a reconnect in the event handler 4326 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4327 hci_shutdown_connection(aConn); 4328 } 4329 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4330 hci_controller_dump_packets(); 4331 #endif 4332 } 4333 4334 // execute main loop 4335 hci_run(); 4336 } 4337 4338 #ifdef ENABLE_CLASSIC 4339 4340 #ifdef ENABLE_SCO_OVER_HCI 4341 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4342 static void sco_schedule_tx(hci_connection_t * conn); 4343 4344 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4345 log_debug("SCO TX Timeout"); 4346 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4347 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4348 if (!conn) return; 4349 4350 // trigger send 4351 conn->sco_tx_ready = 1; 4352 // extra packet if CVSD but SCO buffer is too short 4353 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4354 conn->sco_tx_ready++; 4355 } 4356 hci_notify_if_sco_can_send_now(); 4357 } 4358 4359 4360 #define SCO_TX_AFTER_RX_MS (6) 4361 4362 static void sco_schedule_tx(hci_connection_t * conn){ 4363 4364 uint32_t now = btstack_run_loop_get_time_ms(); 4365 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4366 int time_delta_ms = sco_tx_ms - now; 4367 4368 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4369 4370 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4371 btstack_run_loop_remove_timer(timer); 4372 btstack_run_loop_set_timer(timer, time_delta_ms); 4373 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4374 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4375 btstack_run_loop_add_timer(timer); 4376 } 4377 #endif 4378 4379 static void sco_handler(uint8_t * packet, uint16_t size){ 4380 // lookup connection struct 4381 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4382 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4383 if (!conn) return; 4384 4385 #ifdef ENABLE_SCO_OVER_HCI 4386 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4387 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4388 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4389 packet[2] = 0x3c; 4390 memmove(&packet[3], &packet[23], 63); 4391 size = 63; 4392 } 4393 } 4394 4395 if (hci_have_usb_transport()){ 4396 // Nothing to do 4397 } else { 4398 // 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); 4399 if (hci_stack->synchronous_flow_control_enabled == 0){ 4400 uint32_t now = btstack_run_loop_get_time_ms(); 4401 4402 if (!conn->sco_rx_valid){ 4403 // ignore first 10 packets 4404 conn->sco_rx_count++; 4405 // log_debug("sco rx count %u", conn->sco_rx_count); 4406 if (conn->sco_rx_count == 10) { 4407 // use first timestamp as is and pretent it just started 4408 conn->sco_rx_ms = now; 4409 conn->sco_rx_valid = 1; 4410 conn->sco_rx_count = 0; 4411 sco_schedule_tx(conn); 4412 } 4413 } else { 4414 // track expected arrival timme 4415 conn->sco_rx_count++; 4416 conn->sco_rx_ms += 7; 4417 int delta = (int32_t) (now - conn->sco_rx_ms); 4418 if (delta > 0){ 4419 conn->sco_rx_ms++; 4420 } 4421 // log_debug("sco rx %u", conn->sco_rx_ms); 4422 sco_schedule_tx(conn); 4423 } 4424 } 4425 } 4426 #endif 4427 4428 // deliver to app 4429 if (hci_stack->sco_packet_handler) { 4430 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4431 } 4432 4433 #ifdef HAVE_SCO_TRANSPORT 4434 // We can send one packet for each received packet 4435 conn->sco_tx_ready++; 4436 hci_notify_if_sco_can_send_now(); 4437 #endif 4438 4439 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4440 conn->num_packets_completed++; 4441 hci_stack->host_completed_packets = 1; 4442 hci_run(); 4443 #endif 4444 } 4445 #endif 4446 4447 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4448 hci_dump_packet(packet_type, 1, packet, size); 4449 switch (packet_type) { 4450 case HCI_EVENT_PACKET: 4451 event_handler(packet, size); 4452 break; 4453 case HCI_ACL_DATA_PACKET: 4454 acl_handler(packet, size); 4455 break; 4456 #ifdef ENABLE_CLASSIC 4457 case HCI_SCO_DATA_PACKET: 4458 sco_handler(packet, size); 4459 break; 4460 #endif 4461 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4462 case HCI_ISO_DATA_PACKET: 4463 hci_iso_packet_handler(packet, size); 4464 break; 4465 #endif 4466 default: 4467 break; 4468 } 4469 } 4470 4471 /** 4472 * @brief Add event packet handler. 4473 */ 4474 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4475 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4476 } 4477 4478 /** 4479 * @brief Remove event packet handler. 4480 */ 4481 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4482 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4483 } 4484 4485 /** Register HCI packet handlers */ 4486 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4487 hci_stack->acl_packet_handler = handler; 4488 } 4489 4490 #ifdef ENABLE_CLASSIC 4491 /** 4492 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4493 */ 4494 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4495 hci_stack->sco_packet_handler = handler; 4496 } 4497 #endif 4498 4499 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4500 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4501 hci_stack->iso_packet_handler = handler; 4502 } 4503 #endif 4504 4505 static void hci_state_reset(void){ 4506 // no connections yet 4507 hci_stack->connections = NULL; 4508 4509 // keep discoverable/connectable as this has been requested by the client(s) 4510 // hci_stack->discoverable = 0; 4511 // hci_stack->connectable = 0; 4512 // hci_stack->bondable = 1; 4513 // hci_stack->own_addr_type = 0; 4514 4515 // buffer is free 4516 hci_stack->hci_packet_buffer_reserved = false; 4517 4518 // no pending cmds 4519 hci_stack->decline_reason = 0; 4520 4521 hci_stack->secure_connections_active = false; 4522 4523 #ifdef ENABLE_CLASSIC 4524 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4525 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4526 4527 hci_stack->gap_tasks_classic = 4528 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4529 GAP_TASK_SET_CLASS_OF_DEVICE | 4530 GAP_TASK_SET_LOCAL_NAME | 4531 GAP_TASK_SET_EIR_DATA | 4532 GAP_TASK_WRITE_SCAN_ENABLE | 4533 GAP_TASK_WRITE_PAGE_TIMEOUT; 4534 #endif 4535 4536 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4537 hci_stack->classic_read_local_oob_data = false; 4538 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4539 #endif 4540 4541 // LE 4542 #ifdef ENABLE_BLE 4543 memset(hci_stack->le_random_address, 0, 6); 4544 hci_stack->le_random_address_set = 0; 4545 #endif 4546 #ifdef ENABLE_LE_CENTRAL 4547 hci_stack->le_scanning_active = false; 4548 hci_stack->le_scanning_param_update = true; 4549 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4550 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4551 hci_stack->le_whitelist_capacity = 0; 4552 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4553 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4554 #endif 4555 #endif 4556 #ifdef ENABLE_LE_PERIPHERAL 4557 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4558 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4559 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4560 } 4561 if (hci_stack->le_advertisements_data != NULL){ 4562 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4563 } 4564 #endif 4565 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4566 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4567 #endif 4568 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4569 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4570 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4571 #endif 4572 } 4573 4574 #ifdef ENABLE_CLASSIC 4575 /** 4576 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4577 */ 4578 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4579 // store and open remote device db 4580 hci_stack->link_key_db = link_key_db; 4581 if (hci_stack->link_key_db) { 4582 hci_stack->link_key_db->open(); 4583 } 4584 } 4585 #endif 4586 4587 void hci_init(const hci_transport_t *transport, const void *config){ 4588 4589 #ifdef HAVE_MALLOC 4590 if (!hci_stack) { 4591 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4592 } 4593 #else 4594 hci_stack = &hci_stack_static; 4595 #endif 4596 memset(hci_stack, 0, sizeof(hci_stack_t)); 4597 4598 // reference to use transport layer implementation 4599 hci_stack->hci_transport = transport; 4600 4601 // reference to used config 4602 hci_stack->config = config; 4603 4604 // setup pointer for outgoing packet buffer 4605 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4606 4607 // max acl payload size defined in config.h 4608 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4609 4610 // register packet handlers with transport 4611 transport->register_packet_handler(&packet_handler); 4612 4613 hci_stack->state = HCI_STATE_OFF; 4614 4615 // class of device 4616 hci_stack->class_of_device = 0x007a020c; // Smartphone 4617 4618 // bondable by default 4619 hci_stack->bondable = 1; 4620 4621 #ifdef ENABLE_CLASSIC 4622 // classic name 4623 hci_stack->local_name = default_classic_name; 4624 4625 // Master slave policy 4626 hci_stack->master_slave_policy = 1; 4627 4628 // Allow Role Switch 4629 hci_stack->allow_role_switch = 1; 4630 4631 // Default / minimum security level = 2 4632 hci_stack->gap_security_level = LEVEL_2; 4633 4634 // Default Security Mode 4 4635 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4636 4637 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4638 hci_stack->gap_required_encyrption_key_size = 7; 4639 4640 // Link Supervision Timeout 4641 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4642 4643 #endif 4644 4645 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4646 hci_stack->ssp_enable = 1; 4647 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4648 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4649 hci_stack->ssp_auto_accept = 1; 4650 4651 // Secure Connections: enable (requires support from Controller) 4652 hci_stack->secure_connections_enable = true; 4653 4654 // voice setting - signed 16 bit pcm data with CVSD over the air 4655 hci_stack->sco_voice_setting = 0x60; 4656 4657 #ifdef ENABLE_LE_CENTRAL 4658 // connection parameter to use for outgoing connections 4659 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4660 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4661 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4662 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4663 hci_stack->le_connection_latency = 4; // 4 4664 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4665 hci_stack->le_minimum_ce_length = 0; // 0 ms 4666 hci_stack->le_maximum_ce_length = 0; // 0 ms 4667 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4668 4669 // default LE Scanning 4670 hci_stack->le_scan_type = 0x01; // active 4671 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4672 hci_stack->le_scan_window = 0x30; // 30 ms 4673 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4674 #endif 4675 4676 #ifdef ENABLE_LE_PERIPHERAL 4677 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4678 4679 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4680 hci_stack->le_advertisements_interval_min = 0x0800; 4681 hci_stack->le_advertisements_interval_max = 0x0800; 4682 hci_stack->le_advertisements_type = 0; 4683 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4684 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4685 hci_stack->le_advertisements_channel_map = 0x07; 4686 hci_stack->le_advertisements_filter_policy = 0; 4687 #endif 4688 4689 // connection parameter range used to answer connection parameter update requests in l2cap 4690 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4691 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4692 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4693 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4694 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4695 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4696 4697 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4698 hci_stack->iso_packets_to_queue = 1; 4699 #endif 4700 4701 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4702 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4703 #endif 4704 4705 hci_state_reset(); 4706 } 4707 4708 void hci_deinit(void){ 4709 btstack_run_loop_remove_timer(&hci_stack->timeout); 4710 #ifdef HAVE_MALLOC 4711 if (hci_stack) { 4712 free(hci_stack); 4713 } 4714 #endif 4715 hci_stack = NULL; 4716 4717 #ifdef ENABLE_CLASSIC 4718 disable_l2cap_timeouts = 0; 4719 #endif 4720 } 4721 4722 /** 4723 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4724 */ 4725 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4726 hci_stack->chipset = chipset_driver; 4727 4728 // reset chipset driver - init is also called on power_up 4729 if (hci_stack->chipset && hci_stack->chipset->init){ 4730 hci_stack->chipset->init(hci_stack->config); 4731 } 4732 } 4733 4734 void hci_enable_custom_pre_init(void){ 4735 hci_stack->chipset_pre_init = true; 4736 } 4737 4738 /** 4739 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4740 */ 4741 void hci_set_control(const btstack_control_t *hardware_control){ 4742 // references to used control implementation 4743 hci_stack->control = hardware_control; 4744 // init with transport config 4745 hardware_control->init(hci_stack->config); 4746 } 4747 4748 static void hci_discard_connections(void){ 4749 btstack_linked_list_iterator_t it; 4750 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4751 while (btstack_linked_list_iterator_has_next(&it)){ 4752 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4753 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4754 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4755 hci_shutdown_connection(connection); 4756 } 4757 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4758 while (hci_stack->iso_streams != NULL){ 4759 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4760 } 4761 #endif 4762 } 4763 4764 void hci_close(void){ 4765 4766 #ifdef ENABLE_CLASSIC 4767 // close remote device db 4768 if (hci_stack->link_key_db) { 4769 hci_stack->link_key_db->close(); 4770 } 4771 #endif 4772 4773 hci_discard_connections(); 4774 4775 hci_power_control(HCI_POWER_OFF); 4776 4777 #ifdef HAVE_MALLOC 4778 free(hci_stack); 4779 #endif 4780 hci_stack = NULL; 4781 } 4782 4783 #ifdef HAVE_SCO_TRANSPORT 4784 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4785 hci_stack->sco_transport = sco_transport; 4786 sco_transport->register_packet_handler(&packet_handler); 4787 } 4788 #endif 4789 4790 #ifdef ENABLE_CLASSIC 4791 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4792 // validate ranage and set 4793 if (encryption_key_size < 7) return; 4794 if (encryption_key_size > 16) return; 4795 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4796 } 4797 4798 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4799 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4800 hci_stack->gap_security_mode = security_mode; 4801 return ERROR_CODE_SUCCESS; 4802 } else { 4803 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4804 } 4805 } 4806 4807 gap_security_mode_t gap_get_security_mode(void){ 4808 return hci_stack->gap_security_mode; 4809 } 4810 4811 void gap_set_security_level(gap_security_level_t security_level){ 4812 hci_stack->gap_security_level = security_level; 4813 } 4814 4815 gap_security_level_t gap_get_security_level(void){ 4816 if (hci_stack->gap_secure_connections_only_mode){ 4817 return LEVEL_4; 4818 } 4819 return hci_stack->gap_security_level; 4820 } 4821 4822 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4823 hci_stack->gap_minimal_service_security_level = security_level; 4824 } 4825 4826 void gap_set_secure_connections_only_mode(bool enable){ 4827 hci_stack->gap_secure_connections_only_mode = enable; 4828 } 4829 4830 bool gap_get_secure_connections_only_mode(void){ 4831 return hci_stack->gap_secure_connections_only_mode; 4832 } 4833 #endif 4834 4835 #ifdef ENABLE_CLASSIC 4836 void gap_set_class_of_device(uint32_t class_of_device){ 4837 hci_stack->class_of_device = class_of_device; 4838 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4839 hci_run(); 4840 } 4841 4842 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4843 hci_stack->default_link_policy_settings = default_link_policy_settings; 4844 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4845 hci_run(); 4846 } 4847 4848 void gap_set_allow_role_switch(bool allow_role_switch){ 4849 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4850 } 4851 4852 uint8_t hci_get_allow_role_switch(void){ 4853 return hci_stack->allow_role_switch; 4854 } 4855 4856 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4857 hci_stack->link_supervision_timeout = link_supervision_timeout; 4858 } 4859 4860 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4861 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4862 } 4863 4864 uint16_t hci_automatic_flush_timeout(void){ 4865 return hci_stack->automatic_flush_timeout; 4866 } 4867 4868 void hci_disable_l2cap_timeout_check(void){ 4869 disable_l2cap_timeouts = 1; 4870 } 4871 #endif 4872 4873 #ifndef HAVE_HOST_CONTROLLER_API 4874 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4875 void hci_set_bd_addr(bd_addr_t addr){ 4876 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4877 hci_stack->custom_bd_addr_set = 1; 4878 } 4879 #endif 4880 4881 // State-Module-Driver overview 4882 // state module low-level 4883 // HCI_STATE_OFF off close 4884 // HCI_STATE_INITIALIZING, on open 4885 // HCI_STATE_WORKING, on open 4886 // HCI_STATE_HALTING, on open 4887 // HCI_STATE_SLEEPING, off/sleep close 4888 // HCI_STATE_FALLING_ASLEEP on open 4889 4890 static int hci_power_control_on(void){ 4891 4892 // power on 4893 int err = 0; 4894 if (hci_stack->control && hci_stack->control->on){ 4895 err = (*hci_stack->control->on)(); 4896 } 4897 if (err){ 4898 log_error( "POWER_ON failed"); 4899 hci_emit_hci_open_failed(); 4900 return err; 4901 } 4902 4903 // int chipset driver 4904 if (hci_stack->chipset && hci_stack->chipset->init){ 4905 hci_stack->chipset->init(hci_stack->config); 4906 } 4907 4908 // init transport 4909 if (hci_stack->hci_transport->init){ 4910 hci_stack->hci_transport->init(hci_stack->config); 4911 } 4912 4913 // open transport 4914 err = hci_stack->hci_transport->open(); 4915 if (err){ 4916 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4917 if (hci_stack->control && hci_stack->control->off){ 4918 (*hci_stack->control->off)(); 4919 } 4920 hci_emit_hci_open_failed(); 4921 return err; 4922 } 4923 return 0; 4924 } 4925 4926 static void hci_power_control_off(void){ 4927 4928 log_info("hci_power_control_off"); 4929 4930 // close low-level device 4931 hci_stack->hci_transport->close(); 4932 4933 log_info("hci_power_control_off - hci_transport closed"); 4934 4935 // power off 4936 if (hci_stack->control && hci_stack->control->off){ 4937 (*hci_stack->control->off)(); 4938 } 4939 4940 log_info("hci_power_control_off - control closed"); 4941 4942 hci_stack->state = HCI_STATE_OFF; 4943 } 4944 4945 static void hci_power_control_sleep(void){ 4946 4947 log_info("hci_power_control_sleep"); 4948 4949 #if 0 4950 // don't close serial port during sleep 4951 4952 // close low-level device 4953 hci_stack->hci_transport->close(hci_stack->config); 4954 #endif 4955 4956 // sleep mode 4957 if (hci_stack->control && hci_stack->control->sleep){ 4958 (*hci_stack->control->sleep)(); 4959 } 4960 4961 hci_stack->state = HCI_STATE_SLEEPING; 4962 } 4963 4964 static int hci_power_control_wake(void){ 4965 4966 log_info("hci_power_control_wake"); 4967 4968 // wake on 4969 if (hci_stack->control && hci_stack->control->wake){ 4970 (*hci_stack->control->wake)(); 4971 } 4972 4973 #if 0 4974 // open low-level device 4975 int err = hci_stack->hci_transport->open(hci_stack->config); 4976 if (err){ 4977 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4978 if (hci_stack->control && hci_stack->control->off){ 4979 (*hci_stack->control->off)(); 4980 } 4981 hci_emit_hci_open_failed(); 4982 return err; 4983 } 4984 #endif 4985 4986 return 0; 4987 } 4988 4989 static void hci_power_enter_initializing_state(void){ 4990 // set up state machine 4991 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4992 hci_stack->hci_packet_buffer_reserved = false; 4993 hci_stack->state = HCI_STATE_INITIALIZING; 4994 4995 if (hci_stack->chipset_pre_init) { 4996 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 4997 } else { 4998 hci_stack->substate = HCI_INIT_SEND_RESET; 4999 } 5000 } 5001 5002 static void hci_power_enter_halting_state(void){ 5003 #ifdef ENABLE_BLE 5004 // drop entries scheduled for removal, mark others for re-adding 5005 btstack_linked_list_iterator_t it; 5006 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5007 while (btstack_linked_list_iterator_has_next(&it)){ 5008 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5009 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5010 btstack_linked_list_iterator_remove(&it); 5011 btstack_memory_whitelist_entry_free(entry); 5012 } else { 5013 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5014 } 5015 } 5016 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5017 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5018 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5019 while (btstack_linked_list_iterator_has_next(&it)){ 5020 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5021 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5022 btstack_linked_list_iterator_remove(&it); 5023 btstack_memory_periodic_advertiser_list_entry_free(entry); 5024 } else { 5025 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5026 continue; 5027 } 5028 } 5029 #endif 5030 #endif 5031 // see hci_run 5032 hci_stack->state = HCI_STATE_HALTING; 5033 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5034 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5035 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5036 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5037 btstack_run_loop_add_timer(&hci_stack->timeout); 5038 } 5039 5040 // returns error 5041 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5042 int err; 5043 switch (power_mode){ 5044 case HCI_POWER_ON: 5045 err = hci_power_control_on(); 5046 if (err != 0) { 5047 log_error("hci_power_control_on() error %d", err); 5048 return err; 5049 } 5050 hci_power_enter_initializing_state(); 5051 break; 5052 case HCI_POWER_OFF: 5053 // do nothing 5054 break; 5055 case HCI_POWER_SLEEP: 5056 // do nothing (with SLEEP == OFF) 5057 break; 5058 default: 5059 btstack_assert(false); 5060 break; 5061 } 5062 return ERROR_CODE_SUCCESS; 5063 } 5064 5065 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5066 switch (power_mode){ 5067 case HCI_POWER_ON: 5068 // do nothing 5069 break; 5070 case HCI_POWER_OFF: 5071 // no connections yet, just turn it off 5072 hci_power_control_off(); 5073 break; 5074 case HCI_POWER_SLEEP: 5075 // no connections yet, just turn it off 5076 hci_power_control_sleep(); 5077 break; 5078 default: 5079 btstack_assert(false); 5080 break; 5081 } 5082 return ERROR_CODE_SUCCESS; 5083 } 5084 5085 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5086 switch (power_mode){ 5087 case HCI_POWER_ON: 5088 // do nothing 5089 break; 5090 case HCI_POWER_OFF: 5091 hci_power_enter_halting_state(); 5092 break; 5093 case HCI_POWER_SLEEP: 5094 // see hci_run 5095 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5096 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5097 break; 5098 default: 5099 btstack_assert(false); 5100 break; 5101 } 5102 return ERROR_CODE_SUCCESS; 5103 } 5104 5105 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5106 switch (power_mode){ 5107 case HCI_POWER_ON: 5108 hci_power_enter_initializing_state(); 5109 break; 5110 case HCI_POWER_OFF: 5111 // do nothing 5112 break; 5113 case HCI_POWER_SLEEP: 5114 // see hci_run 5115 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5116 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5117 break; 5118 default: 5119 btstack_assert(false); 5120 break; 5121 } 5122 return ERROR_CODE_SUCCESS; 5123 } 5124 5125 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5126 switch (power_mode){ 5127 case HCI_POWER_ON: 5128 hci_power_enter_initializing_state(); 5129 break; 5130 case HCI_POWER_OFF: 5131 hci_power_enter_halting_state(); 5132 break; 5133 case HCI_POWER_SLEEP: 5134 // do nothing 5135 break; 5136 default: 5137 btstack_assert(false); 5138 break; 5139 } 5140 return ERROR_CODE_SUCCESS; 5141 } 5142 5143 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5144 int err; 5145 switch (power_mode){ 5146 case HCI_POWER_ON: 5147 err = hci_power_control_wake(); 5148 if (err) return err; 5149 hci_power_enter_initializing_state(); 5150 break; 5151 case HCI_POWER_OFF: 5152 hci_power_enter_halting_state(); 5153 break; 5154 case HCI_POWER_SLEEP: 5155 // do nothing 5156 break; 5157 default: 5158 btstack_assert(false); 5159 break; 5160 } 5161 return ERROR_CODE_SUCCESS; 5162 } 5163 5164 int hci_power_control(HCI_POWER_MODE power_mode){ 5165 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5166 btstack_run_loop_remove_timer(&hci_stack->timeout); 5167 int err = 0; 5168 switch (hci_stack->state){ 5169 case HCI_STATE_OFF: 5170 err = hci_power_control_state_off(power_mode); 5171 break; 5172 case HCI_STATE_INITIALIZING: 5173 err = hci_power_control_state_initializing(power_mode); 5174 break; 5175 case HCI_STATE_WORKING: 5176 err = hci_power_control_state_working(power_mode); 5177 break; 5178 case HCI_STATE_HALTING: 5179 err = hci_power_control_state_halting(power_mode); 5180 break; 5181 case HCI_STATE_FALLING_ASLEEP: 5182 err = hci_power_control_state_falling_asleep(power_mode); 5183 break; 5184 case HCI_STATE_SLEEPING: 5185 err = hci_power_control_state_sleeping(power_mode); 5186 break; 5187 default: 5188 btstack_assert(false); 5189 break; 5190 } 5191 if (err != 0){ 5192 return err; 5193 } 5194 5195 // create internal event 5196 hci_emit_state(); 5197 5198 // trigger next/first action 5199 hci_run(); 5200 5201 return 0; 5202 } 5203 5204 5205 static void hci_halting_run(void) { 5206 5207 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5208 5209 hci_connection_t *connection; 5210 #ifdef ENABLE_BLE 5211 #ifdef ENABLE_LE_PERIPHERAL 5212 bool stop_advertismenets; 5213 #endif 5214 #endif 5215 5216 switch (hci_stack->substate) { 5217 case HCI_HALTING_CLASSIC_STOP: 5218 #ifdef ENABLE_CLASSIC 5219 if (!hci_can_send_command_packet_now()) return; 5220 5221 if (hci_stack->connectable || hci_stack->discoverable){ 5222 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5223 hci_send_cmd(&hci_write_scan_enable, 0); 5224 return; 5225 } 5226 #endif 5227 /* fall through */ 5228 5229 case HCI_HALTING_LE_ADV_STOP: 5230 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5231 5232 #ifdef ENABLE_BLE 5233 #ifdef ENABLE_LE_PERIPHERAL 5234 if (!hci_can_send_command_packet_now()) return; 5235 5236 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5237 5238 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5239 if (hci_extended_advertising_supported()){ 5240 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5241 btstack_linked_list_iterator_t it; 5242 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5243 // stop all periodic advertisements and check if an extended set is active 5244 while (btstack_linked_list_iterator_has_next(&it)){ 5245 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5246 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5247 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5248 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5249 return; 5250 } 5251 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5252 stop_advertismenets = true; 5253 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5254 } 5255 } 5256 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5257 if (stop_advertismenets){ 5258 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5259 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5260 return; 5261 } 5262 } else 5263 #else /* ENABLE_LE_PERIPHERAL */ 5264 { 5265 if (stop_advertismenets) { 5266 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5267 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5268 return; 5269 } 5270 } 5271 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5272 #endif /* ENABLE_LE_PERIPHERAL */ 5273 #endif /* ENABLE_BLE */ 5274 5275 /* fall through */ 5276 5277 case HCI_HALTING_LE_SCAN_STOP: 5278 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5279 if (!hci_can_send_command_packet_now()) return; 5280 5281 #ifdef ENABLE_BLE 5282 #ifdef ENABLE_LE_CENTRAL 5283 if (hci_stack->le_scanning_active){ 5284 hci_le_scan_stop(); 5285 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5286 return; 5287 } 5288 #endif 5289 #endif 5290 5291 /* fall through */ 5292 5293 case HCI_HALTING_DISCONNECT_ALL: 5294 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5295 if (!hci_can_send_command_packet_now()) return; 5296 5297 // close all open connections 5298 connection = (hci_connection_t *) hci_stack->connections; 5299 if (connection) { 5300 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5301 5302 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5303 5304 // check state 5305 switch(connection->state) { 5306 case SENT_DISCONNECT: 5307 case RECEIVED_DISCONNECTION_COMPLETE: 5308 // wait until connection is gone 5309 return; 5310 default: 5311 break; 5312 } 5313 5314 // finally, send the disconnect command 5315 connection->state = SENT_DISCONNECT; 5316 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5317 return; 5318 } 5319 5320 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5321 // stop BIGs and BIG Syncs 5322 if (hci_stack->le_audio_bigs != NULL){ 5323 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5324 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5325 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5326 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5327 return; 5328 } 5329 if (hci_stack->le_audio_big_syncs != NULL){ 5330 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5331 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5332 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5333 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5334 return; 5335 } 5336 #endif 5337 5338 btstack_run_loop_remove_timer(&hci_stack->timeout); 5339 5340 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5341 log_info("HCI_STATE_HALTING: wait 50 ms"); 5342 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5343 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5344 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5345 btstack_run_loop_add_timer(&hci_stack->timeout); 5346 break; 5347 5348 case HCI_HALTING_W4_CLOSE_TIMER: 5349 // keep waiting 5350 break; 5351 5352 case HCI_HALTING_CLOSE: 5353 // close left over connections (that had not been properly closed before) 5354 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5355 hci_discard_connections(); 5356 5357 log_info("HCI_STATE_HALTING, calling off"); 5358 5359 // switch mode 5360 hci_power_control_off(); 5361 5362 log_info("HCI_STATE_HALTING, emitting state"); 5363 hci_emit_state(); 5364 log_info("HCI_STATE_HALTING, done"); 5365 break; 5366 5367 default: 5368 break; 5369 } 5370 }; 5371 5372 static void hci_falling_asleep_run(void){ 5373 hci_connection_t * connection; 5374 switch(hci_stack->substate) { 5375 case HCI_FALLING_ASLEEP_DISCONNECT: 5376 log_info("HCI_STATE_FALLING_ASLEEP"); 5377 // close all open connections 5378 connection = (hci_connection_t *) hci_stack->connections; 5379 if (connection){ 5380 5381 // send disconnect 5382 if (!hci_can_send_command_packet_now()) return; 5383 5384 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5385 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5386 5387 // send disconnected event right away - causes higher layer connections to get closed, too. 5388 hci_shutdown_connection(connection); 5389 return; 5390 } 5391 5392 if (hci_classic_supported()){ 5393 // disable page and inquiry scan 5394 if (!hci_can_send_command_packet_now()) return; 5395 5396 log_info("HCI_STATE_HALTING, disabling inq scans"); 5397 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5398 5399 // continue in next sub state 5400 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5401 break; 5402 } 5403 5404 /* fall through */ 5405 5406 case HCI_FALLING_ASLEEP_COMPLETE: 5407 log_info("HCI_STATE_HALTING, calling sleep"); 5408 // switch mode 5409 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5410 hci_emit_state(); 5411 break; 5412 5413 default: 5414 break; 5415 } 5416 } 5417 5418 #ifdef ENABLE_CLASSIC 5419 5420 static void hci_update_scan_enable(void){ 5421 // 2 = page scan, 1 = inq scan 5422 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5423 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5424 hci_run(); 5425 } 5426 5427 void gap_discoverable_control(uint8_t enable){ 5428 if (enable) enable = 1; // normalize argument 5429 5430 if (hci_stack->discoverable == enable){ 5431 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5432 return; 5433 } 5434 5435 hci_stack->discoverable = enable; 5436 hci_update_scan_enable(); 5437 } 5438 5439 void gap_connectable_control(uint8_t enable){ 5440 if (enable) enable = 1; // normalize argument 5441 5442 // don't emit event 5443 if (hci_stack->connectable == enable) return; 5444 5445 hci_stack->connectable = enable; 5446 hci_update_scan_enable(); 5447 } 5448 #endif 5449 5450 void gap_local_bd_addr(bd_addr_t address_buffer){ 5451 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5452 } 5453 5454 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5455 static void hci_host_num_completed_packets(void){ 5456 5457 // create packet manually as arrays are not supported and num_commands should not get reduced 5458 hci_reserve_packet_buffer(); 5459 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5460 5461 uint16_t size = 0; 5462 uint16_t num_handles = 0; 5463 packet[size++] = 0x35; 5464 packet[size++] = 0x0c; 5465 size++; // skip param len 5466 size++; // skip num handles 5467 5468 // add { handle, packets } entries 5469 btstack_linked_item_t * it; 5470 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5471 hci_connection_t * connection = (hci_connection_t *) it; 5472 if (connection->num_packets_completed){ 5473 little_endian_store_16(packet, size, connection->con_handle); 5474 size += 2; 5475 little_endian_store_16(packet, size, connection->num_packets_completed); 5476 size += 2; 5477 // 5478 num_handles++; 5479 connection->num_packets_completed = 0; 5480 } 5481 } 5482 5483 packet[2] = size - 3; 5484 packet[3] = num_handles; 5485 5486 hci_stack->host_completed_packets = 0; 5487 5488 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5489 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5490 5491 // release packet buffer for synchronous transport implementations 5492 if (hci_transport_synchronous()){ 5493 hci_release_packet_buffer(); 5494 hci_emit_transport_packet_sent(); 5495 } 5496 } 5497 #endif 5498 5499 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5500 UNUSED(ds); 5501 hci_stack->substate = HCI_HALTING_CLOSE; 5502 hci_halting_run(); 5503 } 5504 5505 static bool hci_run_acl_fragments(void){ 5506 if (hci_stack->acl_fragmentation_total_size > 0u) { 5507 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5508 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5509 if (connection) { 5510 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5511 hci_send_acl_packet_fragments(connection); 5512 return true; 5513 } 5514 } else { 5515 // connection gone -> discard further fragments 5516 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5517 hci_stack->acl_fragmentation_total_size = 0; 5518 hci_stack->acl_fragmentation_pos = 0; 5519 } 5520 } 5521 return false; 5522 } 5523 5524 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5525 static bool hci_run_iso_fragments(void){ 5526 if (hci_stack->iso_fragmentation_total_size > 0u) { 5527 // TODO: flow control 5528 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5529 hci_send_iso_packet_fragments(); 5530 return true; 5531 } 5532 } 5533 return false; 5534 } 5535 #endif 5536 5537 #ifdef ENABLE_CLASSIC 5538 5539 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5540 static bool hci_classic_operation_active(void) { 5541 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5542 return true; 5543 } 5544 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5545 return true; 5546 } 5547 btstack_linked_item_t * it; 5548 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5549 hci_connection_t *connection = (hci_connection_t *) it; 5550 switch (connection->state) { 5551 case SENT_CREATE_CONNECTION: 5552 case SENT_CANCEL_CONNECTION: 5553 case SENT_DISCONNECT: 5554 return true; 5555 default: 5556 break; 5557 } 5558 } 5559 return false; 5560 } 5561 #endif 5562 5563 static bool hci_run_general_gap_classic(void){ 5564 5565 // assert stack is working and classic is active 5566 if (hci_classic_supported() == false) return false; 5567 if (hci_stack->state != HCI_STATE_WORKING) return false; 5568 5569 // decline incoming connections 5570 if (hci_stack->decline_reason){ 5571 uint8_t reason = hci_stack->decline_reason; 5572 hci_stack->decline_reason = 0; 5573 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5574 return true; 5575 } 5576 5577 if (hci_stack->gap_tasks_classic != 0){ 5578 hci_run_gap_tasks_classic(); 5579 return true; 5580 } 5581 5582 // start/stop inquiry 5583 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5584 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5585 if (hci_classic_operation_active() == false) 5586 #endif 5587 { 5588 uint8_t duration = hci_stack->inquiry_state; 5589 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5590 if (hci_stack->inquiry_max_period_length != 0){ 5591 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); 5592 } else { 5593 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5594 } 5595 return true; 5596 } 5597 } 5598 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5599 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5600 hci_send_cmd(&hci_inquiry_cancel); 5601 return true; 5602 } 5603 5604 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5605 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5606 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5607 return true; 5608 } 5609 5610 // remote name request 5611 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5612 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5613 if (hci_classic_operation_active() == false) 5614 #endif 5615 { 5616 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5617 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5618 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5619 return true; 5620 } 5621 } 5622 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5623 // Local OOB data 5624 if (hci_stack->classic_read_local_oob_data){ 5625 hci_stack->classic_read_local_oob_data = false; 5626 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5627 hci_send_cmd(&hci_read_local_extended_oob_data); 5628 } else { 5629 hci_send_cmd(&hci_read_local_oob_data); 5630 } 5631 } 5632 #endif 5633 // pairing 5634 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5635 uint8_t state = hci_stack->gap_pairing_state; 5636 uint8_t pin_code[16]; 5637 switch (state){ 5638 case GAP_PAIRING_STATE_SEND_PIN: 5639 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5640 memset(pin_code, 0, 16); 5641 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5642 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5643 break; 5644 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5645 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5646 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5647 break; 5648 case GAP_PAIRING_STATE_SEND_PASSKEY: 5649 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5650 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5651 break; 5652 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5653 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5654 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5655 break; 5656 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5657 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5658 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5659 break; 5660 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5661 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5662 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5663 break; 5664 default: 5665 break; 5666 } 5667 return true; 5668 } 5669 return false; 5670 } 5671 #endif 5672 5673 #ifdef ENABLE_BLE 5674 5675 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5676 static uint8_t hci_le_num_phys(uint8_t phys){ 5677 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5678 btstack_assert(phys); 5679 return num_bits_set[phys]; 5680 } 5681 #endif 5682 5683 #ifdef ENABLE_LE_CENTRAL 5684 static void hci_le_scan_stop(void){ 5685 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5686 if (hci_extended_advertising_supported()) { 5687 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5688 } else 5689 #endif 5690 { 5691 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5692 } 5693 } 5694 5695 static void 5696 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5697 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5698 if (hci_extended_advertising_supported()) { 5699 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5700 uint16_t le_connection_scan_interval[3]; 5701 uint16_t le_connection_scan_window[3]; 5702 uint16_t le_connection_interval_min[3]; 5703 uint16_t le_connection_interval_max[3]; 5704 uint16_t le_connection_latency[3]; 5705 uint16_t le_supervision_timeout[3]; 5706 uint16_t le_minimum_ce_length[3]; 5707 uint16_t le_maximum_ce_length[3]; 5708 5709 uint8_t i; 5710 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5711 for (i=0;i<num_phys;i++){ 5712 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5713 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5714 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5715 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5716 le_connection_latency[i] = hci_stack->le_connection_latency; 5717 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5718 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5719 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5720 } 5721 hci_send_cmd(&hci_le_extended_create_connection, 5722 initiator_filter_policy, 5723 hci_stack->le_connection_own_addr_type, // our addr type: 5724 address_type, // peer address type 5725 address, // peer bd addr 5726 hci_stack->le_connection_phys, // initiating PHY 5727 le_connection_scan_interval, // conn scan interval 5728 le_connection_scan_window, // conn scan windows 5729 le_connection_interval_min, // conn interval min 5730 le_connection_interval_max, // conn interval max 5731 le_connection_latency, // conn latency 5732 le_supervision_timeout, // conn latency 5733 le_minimum_ce_length, // min ce length 5734 le_maximum_ce_length // max ce length 5735 ); 5736 } else 5737 #endif 5738 { 5739 hci_send_cmd(&hci_le_create_connection, 5740 hci_stack->le_connection_scan_interval, // conn scan interval 5741 hci_stack->le_connection_scan_window, // conn scan windows 5742 initiator_filter_policy, // don't use whitelist 5743 address_type, // peer address type 5744 address, // peer bd addr 5745 hci_stack->le_connection_own_addr_type, // our addr type: 5746 hci_stack->le_connection_interval_min, // conn interval min 5747 hci_stack->le_connection_interval_max, // conn interval max 5748 hci_stack->le_connection_latency, // conn latency 5749 hci_stack->le_supervision_timeout, // conn latency 5750 hci_stack->le_minimum_ce_length, // min ce length 5751 hci_stack->le_maximum_ce_length // max ce length 5752 ); 5753 } 5754 } 5755 #endif 5756 5757 #ifdef ENABLE_LE_PERIPHERAL 5758 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5759 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5760 uint8_t operation = 0; 5761 if (pos == 0){ 5762 // first fragment or complete data 5763 operation |= 1; 5764 } 5765 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5766 // last fragment or complete data 5767 operation |= 2; 5768 } 5769 return operation; 5770 } 5771 #endif 5772 #endif 5773 5774 static bool hci_run_general_gap_le(void){ 5775 5776 btstack_linked_list_iterator_t lit; 5777 5778 // Phase 1: collect what to stop 5779 5780 #ifdef ENABLE_LE_CENTRAL 5781 bool scanning_stop = false; 5782 bool connecting_stop = false; 5783 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5784 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5785 bool periodic_sync_stop = false; 5786 #endif 5787 #endif 5788 #endif 5789 5790 #ifdef ENABLE_LE_PERIPHERAL 5791 bool advertising_stop = false; 5792 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5793 le_advertising_set_t * advertising_stop_set = NULL; 5794 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5795 bool periodic_advertising_stop = false; 5796 #endif 5797 #endif 5798 #endif 5799 5800 // check if own address changes 5801 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5802 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5803 5804 // check if whitelist needs modification 5805 bool whitelist_modification_pending = false; 5806 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5807 while (btstack_linked_list_iterator_has_next(&lit)){ 5808 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5809 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5810 whitelist_modification_pending = true; 5811 break; 5812 } 5813 } 5814 5815 // check if resolving list needs modification 5816 bool resolving_list_modification_pending = false; 5817 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5818 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5819 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5820 resolving_list_modification_pending = true; 5821 } 5822 #endif 5823 5824 #ifdef ENABLE_LE_CENTRAL 5825 5826 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5827 // check if periodic advertiser list needs modification 5828 bool periodic_list_modification_pending = false; 5829 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5830 while (btstack_linked_list_iterator_has_next(&lit)){ 5831 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5832 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5833 periodic_list_modification_pending = true; 5834 break; 5835 } 5836 } 5837 #endif 5838 5839 // scanning control 5840 if (hci_stack->le_scanning_active) { 5841 // stop if: 5842 // - parameter change required 5843 // - it's disabled 5844 // - whitelist change required but used for scanning 5845 // - resolving list modified 5846 // - own address changes 5847 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5848 if ((hci_stack->le_scanning_param_update) || 5849 !hci_stack->le_scanning_enabled || 5850 (scanning_uses_whitelist && whitelist_modification_pending) || 5851 resolving_list_modification_pending || 5852 random_address_change){ 5853 5854 scanning_stop = true; 5855 } 5856 } 5857 5858 // connecting control 5859 bool connecting_with_whitelist; 5860 switch (hci_stack->le_connecting_state){ 5861 case LE_CONNECTING_DIRECT: 5862 case LE_CONNECTING_WHITELIST: 5863 // stop connecting if: 5864 // - connecting uses white and whitelist modification pending 5865 // - if it got disabled 5866 // - resolving list modified 5867 // - own address changes 5868 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5869 if ((connecting_with_whitelist && whitelist_modification_pending) || 5870 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5871 resolving_list_modification_pending || 5872 random_address_change) { 5873 5874 connecting_stop = true; 5875 } 5876 break; 5877 default: 5878 break; 5879 } 5880 5881 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5882 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5883 // periodic sync control 5884 bool sync_with_advertiser_list; 5885 switch(hci_stack->le_periodic_sync_state){ 5886 case LE_CONNECTING_DIRECT: 5887 case LE_CONNECTING_WHITELIST: 5888 // stop sync if: 5889 // - sync with advertiser list and advertiser list modification pending 5890 // - if it got disabled 5891 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5892 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5893 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5894 periodic_sync_stop = true; 5895 } 5896 break; 5897 default: 5898 break; 5899 } 5900 #endif 5901 #endif 5902 5903 #endif /* ENABLE_LE_CENTRAL */ 5904 5905 #ifdef ENABLE_LE_PERIPHERAL 5906 // le advertisement control 5907 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5908 // stop if: 5909 // - parameter change required 5910 // - random address used in advertising and changes 5911 // - it's disabled 5912 // - whitelist change required but used for advertisement filter policy 5913 // - resolving list modified 5914 // - own address changes 5915 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5916 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5917 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5918 if (advertising_change || 5919 (advertising_uses_random_address && random_address_change) || 5920 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5921 (advertising_uses_whitelist && whitelist_modification_pending) || 5922 resolving_list_modification_pending || 5923 random_address_change) { 5924 5925 advertising_stop = true; 5926 } 5927 } 5928 5929 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5930 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5931 btstack_linked_list_iterator_t it; 5932 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5933 while (btstack_linked_list_iterator_has_next(&it)){ 5934 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5935 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5936 // stop if: 5937 // - parameter change required 5938 // - random address used in connectable advertising and changes 5939 // - it's disabled 5940 // - whitelist change required but used for advertisement filter policy 5941 // - resolving list modified 5942 // - own address changes 5943 // - advertisement set will be removed 5944 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5945 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5946 bool advertising_uses_random_address = 5947 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5948 advertising_connectable; 5949 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5950 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5951 bool advertising_set_random_address_change = 5952 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5953 bool advertising_set_will_be_removed = 5954 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5955 if (advertising_parameter_change || 5956 (advertising_uses_random_address && advertising_set_random_address_change) || 5957 (advertising_enabled == false) || 5958 (advertising_uses_whitelist && whitelist_modification_pending) || 5959 resolving_list_modification_pending || 5960 advertising_set_will_be_removed) { 5961 5962 advertising_stop = true; 5963 advertising_stop_set = advertising_set; 5964 break; 5965 } 5966 } 5967 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5968 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5969 // stop if: 5970 // - it's disabled 5971 // - parameter change required 5972 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5973 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5974 if ((periodic_enabled == false) || periodic_parameter_change){ 5975 periodic_advertising_stop = true; 5976 advertising_stop_set = advertising_set; 5977 } 5978 } 5979 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5980 } 5981 } 5982 #endif 5983 5984 #endif 5985 5986 5987 // Phase 2: stop everything that should be off during modifications 5988 5989 5990 // 2.1 Outgoing connection 5991 #ifdef ENABLE_LE_CENTRAL 5992 if (connecting_stop){ 5993 hci_send_cmd(&hci_le_create_connection_cancel); 5994 return true; 5995 } 5996 #endif 5997 5998 // 2.2 Scanning 5999 #ifdef ENABLE_LE_CENTRAL 6000 if (scanning_stop){ 6001 hci_stack->le_scanning_active = false; 6002 hci_le_scan_stop(); 6003 return true; 6004 } 6005 6006 // 2.3 Periodic Sync 6007 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6008 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6009 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6010 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6011 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6012 return true; 6013 } 6014 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6015 if (periodic_sync_stop){ 6016 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6017 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6018 return true; 6019 } 6020 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6021 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6022 #endif /* ENABLE_LE_CENTRAL */ 6023 6024 // 2.4 Advertising: legacy, extended, periodic 6025 #ifdef ENABLE_LE_PERIPHERAL 6026 if (advertising_stop){ 6027 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6028 if (hci_extended_advertising_supported()) { 6029 uint8_t advertising_stop_handle; 6030 if (advertising_stop_set != NULL){ 6031 advertising_stop_handle = advertising_stop_set->advertising_handle; 6032 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6033 } else { 6034 advertising_stop_handle = 0; 6035 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6036 } 6037 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6038 const uint16_t durations[] = { 0 }; 6039 const uint16_t max_events[] = { 0 }; 6040 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6041 } else 6042 #endif 6043 { 6044 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6045 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6046 } 6047 return true; 6048 } 6049 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6050 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6051 if (periodic_advertising_stop){ 6052 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6053 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6054 return true; 6055 } 6056 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6057 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6058 #endif /* ENABLE_LE_PERIPHERAL */ 6059 6060 6061 // Phase 3: modify 6062 6063 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6064 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6065 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6066 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6067 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6068 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6069 #endif 6070 return true; 6071 } 6072 6073 #ifdef ENABLE_LE_CENTRAL 6074 if (hci_stack->le_scanning_param_update){ 6075 hci_stack->le_scanning_param_update = false; 6076 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6077 if (hci_extended_advertising_supported()){ 6078 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6079 uint8_t scan_types[2]; 6080 uint16_t scan_intervals[2]; 6081 uint16_t scan_windows[2]; 6082 6083 uint8_t i; 6084 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6085 for (i=0;i<num_phys;i++){ 6086 scan_types[i] = hci_stack->le_scan_type; 6087 scan_intervals[i] = hci_stack->le_scan_interval; 6088 scan_windows[i] = hci_stack->le_scan_window; 6089 } 6090 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6091 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6092 } else 6093 #endif 6094 { 6095 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6096 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6097 } 6098 return true; 6099 } 6100 #endif 6101 6102 #ifdef ENABLE_LE_PERIPHERAL 6103 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6104 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6105 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6106 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6107 if (hci_extended_advertising_supported()){ 6108 // map advertisment type to advertising event properties 6109 uint16_t adv_event_properties = 0; 6110 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6111 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6112 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6113 } 6114 hci_stack->le_advertising_set_in_current_command = 0; 6115 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6116 0, 6117 adv_event_properties, 6118 hci_stack->le_advertisements_interval_min, 6119 hci_stack->le_advertisements_interval_max, 6120 hci_stack->le_advertisements_channel_map, 6121 hci_stack->le_advertisements_own_addr_type, 6122 hci_stack->le_advertisements_direct_address_type, 6123 hci_stack->le_advertisements_direct_address, 6124 hci_stack->le_advertisements_filter_policy, 6125 0x7f, // tx power: no preference 6126 0x01, // primary adv phy: LE 1M 6127 0, // secondary adv max skip 6128 0, // secondary adv phy 6129 0, // adv sid 6130 0 // scan request notification 6131 ); 6132 } else 6133 #endif 6134 { 6135 hci_send_cmd(&hci_le_set_advertising_parameters, 6136 hci_stack->le_advertisements_interval_min, 6137 hci_stack->le_advertisements_interval_max, 6138 hci_stack->le_advertisements_type, 6139 hci_stack->le_advertisements_own_addr_type, 6140 hci_stack->le_advertisements_direct_address_type, 6141 hci_stack->le_advertisements_direct_address, 6142 hci_stack->le_advertisements_channel_map, 6143 hci_stack->le_advertisements_filter_policy); 6144 } 6145 return true; 6146 } 6147 6148 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6149 // assumption: only set if extended advertising is supported 6150 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6151 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6152 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6153 return true; 6154 } 6155 #endif 6156 6157 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6158 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6159 uint8_t adv_data_clean[31]; 6160 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6161 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6162 hci_stack->le_advertisements_data_len); 6163 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6164 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6165 if (hci_extended_advertising_supported()){ 6166 hci_stack->le_advertising_set_in_current_command = 0; 6167 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6168 } else 6169 #endif 6170 { 6171 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6172 } 6173 return true; 6174 } 6175 6176 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6177 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6178 uint8_t scan_data_clean[31]; 6179 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6180 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6181 hci_stack->le_scan_response_data_len); 6182 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6183 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6184 if (hci_extended_advertising_supported()){ 6185 hci_stack->le_advertising_set_in_current_command = 0; 6186 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6187 } else 6188 #endif 6189 { 6190 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6191 } 6192 return true; 6193 } 6194 6195 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6196 if (hci_extended_advertising_supported()) { 6197 btstack_linked_list_iterator_t it; 6198 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6199 while (btstack_linked_list_iterator_has_next(&it)){ 6200 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6201 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6202 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6203 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6204 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6205 return true; 6206 } 6207 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6208 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6209 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6210 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6211 advertising_set->advertising_handle, 6212 advertising_set->extended_params.advertising_event_properties, 6213 advertising_set->extended_params.primary_advertising_interval_min, 6214 advertising_set->extended_params.primary_advertising_interval_max, 6215 advertising_set->extended_params.primary_advertising_channel_map, 6216 advertising_set->extended_params.own_address_type, 6217 advertising_set->extended_params.peer_address_type, 6218 advertising_set->extended_params.peer_address, 6219 advertising_set->extended_params.advertising_filter_policy, 6220 advertising_set->extended_params.advertising_tx_power, 6221 advertising_set->extended_params.primary_advertising_phy, 6222 advertising_set->extended_params.secondary_advertising_max_skip, 6223 advertising_set->extended_params.secondary_advertising_phy, 6224 advertising_set->extended_params.advertising_sid, 6225 advertising_set->extended_params.scan_request_notification_enable 6226 ); 6227 return true; 6228 } 6229 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6230 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6231 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6232 return true; 6233 } 6234 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6235 uint16_t pos = advertising_set->adv_data_pos; 6236 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6237 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6238 if ((operation & 0x02) != 0){ 6239 // last fragment or complete data 6240 operation |= 2; 6241 advertising_set->adv_data_pos = 0; 6242 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6243 } else { 6244 advertising_set->adv_data_pos += data_to_upload; 6245 } 6246 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6247 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6248 return true; 6249 } 6250 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6251 uint16_t pos = advertising_set->scan_data_pos; 6252 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6253 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6254 if ((operation & 0x02) != 0){ 6255 advertising_set->scan_data_pos = 0; 6256 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6257 } else { 6258 advertising_set->scan_data_pos += data_to_upload; 6259 } 6260 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6261 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6262 return true; 6263 } 6264 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6265 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6266 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6267 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6268 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6269 advertising_set->advertising_handle, 6270 advertising_set->periodic_params.periodic_advertising_interval_min, 6271 advertising_set->periodic_params.periodic_advertising_interval_max, 6272 advertising_set->periodic_params.periodic_advertising_properties); 6273 return true; 6274 } 6275 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6276 uint16_t pos = advertising_set->periodic_data_pos; 6277 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6278 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6279 if ((operation & 0x02) != 0){ 6280 // last fragment or complete data 6281 operation |= 2; 6282 advertising_set->periodic_data_pos = 0; 6283 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6284 } else { 6285 advertising_set->periodic_data_pos += data_to_upload; 6286 } 6287 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6288 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6289 return true; 6290 } 6291 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6292 } 6293 } 6294 #endif 6295 6296 #endif 6297 6298 #ifdef ENABLE_LE_CENTRAL 6299 // if connect with whitelist was active and is not cancelled yet, wait until next time 6300 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6301 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6302 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6303 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6304 #endif 6305 #endif 6306 6307 // LE Whitelist Management 6308 if (whitelist_modification_pending){ 6309 // add/remove entries 6310 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6311 while (btstack_linked_list_iterator_has_next(&lit)){ 6312 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6313 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6314 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6315 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6316 return true; 6317 } 6318 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6319 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6320 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6321 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6322 return true; 6323 } 6324 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6325 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6326 btstack_memory_whitelist_entry_free(entry); 6327 } 6328 } 6329 } 6330 6331 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6332 // LE Resolving List Management 6333 if (resolving_list_supported) { 6334 uint16_t i; 6335 switch (hci_stack->le_resolving_list_state) { 6336 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6337 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6338 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6339 return true; 6340 case LE_RESOLVING_LIST_READ_SIZE: 6341 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6342 hci_send_cmd(&hci_le_read_resolving_list_size); 6343 return true; 6344 case LE_RESOLVING_LIST_SEND_CLEAR: 6345 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6346 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6347 sizeof(hci_stack->le_resolving_list_add_entries)); 6348 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6349 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6350 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6351 sizeof(hci_stack->le_resolving_list_remove_entries)); 6352 hci_send_cmd(&hci_le_clear_resolving_list); 6353 return true; 6354 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6355 // first remove old entries 6356 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6357 uint8_t offset = i >> 3; 6358 uint8_t mask = 1 << (i & 7); 6359 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6360 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6361 bd_addr_t peer_identity_addreses; 6362 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6363 sm_key_t peer_irk; 6364 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6365 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6366 6367 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6368 // trigger whitelist entry 'update' (work around for controller bug) 6369 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6370 while (btstack_linked_list_iterator_has_next(&lit)) { 6371 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6372 if (entry->address_type != peer_identity_addr_type) continue; 6373 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6374 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6375 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6376 } 6377 #endif 6378 6379 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6380 peer_identity_addreses); 6381 return true; 6382 } 6383 6384 // then add new entries 6385 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6386 uint8_t offset = i >> 3; 6387 uint8_t mask = 1 << (i & 7); 6388 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6389 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6390 bd_addr_t peer_identity_addreses; 6391 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6392 sm_key_t peer_irk; 6393 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6394 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6395 if (btstack_is_null(peer_irk, 16)) continue; 6396 const uint8_t *local_irk = gap_get_persistent_irk(); 6397 // command uses format specifier 'P' that stores 16-byte value without flip 6398 uint8_t local_irk_flipped[16]; 6399 uint8_t peer_irk_flipped[16]; 6400 reverse_128(local_irk, local_irk_flipped); 6401 reverse_128(peer_irk, peer_irk_flipped); 6402 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6403 peer_irk_flipped, local_irk_flipped); 6404 return true; 6405 } 6406 6407 // finally, set privacy mode 6408 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6409 uint8_t offset = i >> 3; 6410 uint8_t mask = 1 << (i & 7); 6411 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6412 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6413 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6414 // Network Privacy Mode is default 6415 continue; 6416 } 6417 bd_addr_t peer_identity_address; 6418 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6419 sm_key_t peer_irk; 6420 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6421 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6422 if (btstack_is_null(peer_irk, 16)) continue; 6423 // command uses format specifier 'P' that stores 16-byte value without flip 6424 uint8_t peer_irk_flipped[16]; 6425 reverse_128(peer_irk, peer_irk_flipped); 6426 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6427 return true; 6428 } 6429 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6430 break; 6431 6432 default: 6433 break; 6434 } 6435 } 6436 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6437 #endif 6438 6439 #ifdef ENABLE_LE_CENTRAL 6440 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6441 // LE Whitelist Management 6442 if (periodic_list_modification_pending){ 6443 // add/remove entries 6444 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6445 while (btstack_linked_list_iterator_has_next(&lit)){ 6446 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6447 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6448 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6449 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6450 return true; 6451 } 6452 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6453 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6454 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6455 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6456 return true; 6457 } 6458 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6459 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6460 btstack_memory_periodic_advertiser_list_entry_free(entry); 6461 } 6462 } 6463 } 6464 #endif 6465 #endif 6466 6467 #ifdef ENABLE_LE_CENTRAL 6468 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6469 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6470 if (hci_stack->le_past_set_default_params){ 6471 hci_stack->le_past_set_default_params = false; 6472 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6473 hci_stack->le_past_mode, 6474 hci_stack->le_past_skip, 6475 hci_stack->le_past_sync_timeout, 6476 hci_stack->le_past_cte_type); 6477 return true; 6478 } 6479 #endif 6480 #endif 6481 #endif 6482 6483 // post-pone all actions until stack is fully working 6484 if (hci_stack->state != HCI_STATE_WORKING) return false; 6485 6486 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6487 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6488 6489 // Phase 4: restore state 6490 6491 #ifdef ENABLE_LE_CENTRAL 6492 // re-start scanning 6493 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6494 hci_stack->le_scanning_active = true; 6495 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6496 if (hci_extended_advertising_supported()){ 6497 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6498 } else 6499 #endif 6500 { 6501 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6502 } 6503 return true; 6504 } 6505 #endif 6506 6507 #ifdef ENABLE_LE_CENTRAL 6508 // re-start connecting 6509 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6510 bd_addr_t null_addr; 6511 memset(null_addr, 0, 6); 6512 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6513 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6514 hci_send_le_create_connection(1, 0, null_addr); 6515 return true; 6516 } 6517 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6518 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6519 switch(hci_stack->le_periodic_sync_request){ 6520 case LE_CONNECTING_DIRECT: 6521 case LE_CONNECTING_WHITELIST: 6522 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6523 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6524 hci_stack->le_periodic_sync_options, 6525 hci_stack->le_periodic_sync_advertising_sid, 6526 hci_stack->le_periodic_sync_advertiser_address_type, 6527 hci_stack->le_periodic_sync_advertiser_address, 6528 hci_stack->le_periodic_sync_skip, 6529 hci_stack->le_periodic_sync_timeout, 6530 hci_stack->le_periodic_sync_cte_type); 6531 return true; 6532 default: 6533 break; 6534 } 6535 } 6536 #endif 6537 #endif 6538 6539 #ifdef ENABLE_LE_PERIPHERAL 6540 // re-start advertising 6541 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6542 // check if advertisements should be enabled given 6543 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6544 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6545 6546 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6547 if (hci_extended_advertising_supported()){ 6548 const uint8_t advertising_handles[] = { 0 }; 6549 const uint16_t durations[] = { 0 }; 6550 const uint16_t max_events[] = { 0 }; 6551 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6552 } else 6553 #endif 6554 { 6555 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6556 } 6557 return true; 6558 } 6559 6560 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6561 if (hci_extended_advertising_supported()) { 6562 btstack_linked_list_iterator_t it; 6563 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6564 while (btstack_linked_list_iterator_has_next(&it)) { 6565 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6566 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6567 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6568 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6569 const uint16_t durations[] = { advertising_set->enable_timeout }; 6570 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6571 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6572 return true; 6573 } 6574 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6575 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6576 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6577 uint8_t enable = 1; 6578 if (advertising_set->periodic_include_adi){ 6579 enable |= 2; 6580 } 6581 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6582 return true; 6583 } 6584 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6585 } 6586 } 6587 #endif 6588 #endif 6589 6590 return false; 6591 } 6592 6593 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6594 static bool hci_run_iso_tasks(void){ 6595 btstack_linked_list_iterator_t it; 6596 6597 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6598 return false; 6599 } 6600 6601 // BIG 6602 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6603 while (btstack_linked_list_iterator_has_next(&it)){ 6604 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6605 switch (big->state){ 6606 case LE_AUDIO_BIG_STATE_CREATE: 6607 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6608 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6609 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6610 hci_send_cmd(&hci_le_create_big, 6611 big->params->big_handle, 6612 big->params->advertising_handle, 6613 big->params->num_bis, 6614 big->params->sdu_interval_us, 6615 big->params->max_sdu, 6616 big->params->max_transport_latency_ms, 6617 big->params->rtn, 6618 big->params->phy, 6619 big->params->packing, 6620 big->params->framing, 6621 big->params->encryption, 6622 big->params->broadcast_code); 6623 return true; 6624 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6625 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6626 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); 6627 return true; 6628 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6629 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6630 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6631 return true; 6632 case LE_AUDIO_BIG_STATE_TERMINATE: 6633 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6634 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6635 return true; 6636 default: 6637 break; 6638 } 6639 } 6640 6641 // BIG Sync 6642 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6643 while (btstack_linked_list_iterator_has_next(&it)){ 6644 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6645 switch (big_sync->state){ 6646 case LE_AUDIO_BIG_STATE_CREATE: 6647 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6648 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6649 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6650 hci_send_cmd(&hci_le_big_create_sync, 6651 big_sync->params->big_handle, 6652 big_sync->params->sync_handle, 6653 big_sync->params->encryption, 6654 big_sync->params->broadcast_code, 6655 big_sync->params->mse, 6656 big_sync->params->big_sync_timeout_10ms, 6657 big_sync->params->num_bis, 6658 big_sync->params->bis_indices); 6659 return true; 6660 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6661 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6662 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); 6663 return true; 6664 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6665 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6666 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6667 return true; 6668 case LE_AUDIO_BIG_STATE_TERMINATE: 6669 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6670 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6671 return true; 6672 default: 6673 break; 6674 } 6675 } 6676 6677 // CIG 6678 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6679 while (btstack_linked_list_iterator_has_next(&it)) { 6680 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6681 uint8_t i; 6682 // Set CIG Parameters 6683 uint8_t cis_id[MAX_NR_CIS]; 6684 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6685 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6686 uint8_t phy_c_to_p[MAX_NR_CIS]; 6687 uint8_t phy_p_to_c[MAX_NR_CIS]; 6688 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6689 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6690 switch (cig->state) { 6691 case LE_AUDIO_CIG_STATE_CREATE: 6692 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6693 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6694 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6695 le_audio_cig_params_t * params = cig->params; 6696 for (i = 0; i < params->num_cis; i++) { 6697 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6698 cis_id[i] = cis_params->cis_id; 6699 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6700 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6701 phy_c_to_p[i] = cis_params->phy_c_to_p; 6702 phy_p_to_c[i] = cis_params->phy_p_to_c; 6703 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6704 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6705 } 6706 hci_send_cmd(&hci_le_set_cig_parameters, 6707 cig->cig_id, 6708 params->sdu_interval_c_to_p, 6709 params->sdu_interval_p_to_c, 6710 params->worst_case_sca, 6711 params->packing, 6712 params->framing, 6713 params->max_transport_latency_c_to_p, 6714 params->max_transport_latency_p_to_c, 6715 params->num_cis, 6716 cis_id, 6717 max_sdu_c_to_p, 6718 max_sdu_p_to_c, 6719 phy_c_to_p, 6720 phy_p_to_c, 6721 rtn_c_to_p, 6722 rtn_p_to_c 6723 ); 6724 return true; 6725 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6726 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6727 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6728 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6729 for (i=0;i<cig->num_cis;i++){ 6730 cig->cis_setup_active[i] = true; 6731 } 6732 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6733 return true; 6734 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6735 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6736 // find next path to setup 6737 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6738 if (cig->cis_established[cis_index] == false) { 6739 continue; 6740 } 6741 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6742 bool setup = true; 6743 if (cis_direction == 0){ 6744 // 0 - input - host to controller 6745 // we are central => central to peripheral 6746 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6747 } else { 6748 // 1 - output - controller to host 6749 // we are central => peripheral to central 6750 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6751 } 6752 if (setup){ 6753 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6754 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6755 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6756 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6757 return true; 6758 } 6759 cig->state_vars.next_cis++; 6760 } 6761 // emit done 6762 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6763 default: 6764 break; 6765 } 6766 } 6767 6768 // CIS Accept/Reject 6769 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6770 while (btstack_linked_list_iterator_has_next(&it)) { 6771 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6772 hci_con_handle_t con_handle; 6773 switch (iso_stream->state){ 6774 case HCI_ISO_STREAM_W2_ACCEPT: 6775 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6776 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6777 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6778 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6779 return true; 6780 case HCI_ISO_STREAM_W2_REJECT: 6781 con_handle = iso_stream->cis_handle; 6782 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6783 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6784 hci_iso_stream_finalize(iso_stream); 6785 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6786 return true; 6787 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6788 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6789 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6790 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6791 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6792 break; 6793 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6794 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6795 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6796 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6797 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6798 break; 6799 default: 6800 break; 6801 } 6802 } 6803 6804 return false; 6805 } 6806 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6807 #endif 6808 6809 static bool hci_run_general_pending_commands(void){ 6810 btstack_linked_item_t * it; 6811 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6812 hci_connection_t * connection = (hci_connection_t *) it; 6813 6814 switch(connection->state){ 6815 case SEND_CREATE_CONNECTION: 6816 switch(connection->address_type){ 6817 #ifdef ENABLE_CLASSIC 6818 case BD_ADDR_TYPE_ACL: 6819 log_info("sending hci_create_connection"); 6820 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6821 break; 6822 #endif 6823 default: 6824 #ifdef ENABLE_BLE 6825 #ifdef ENABLE_LE_CENTRAL 6826 log_info("sending hci_le_create_connection"); 6827 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6828 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6829 hci_send_le_create_connection(0, connection->address_type, connection->address); 6830 connection->state = SENT_CREATE_CONNECTION; 6831 #endif 6832 #endif 6833 break; 6834 } 6835 return true; 6836 6837 #ifdef ENABLE_CLASSIC 6838 case RECEIVED_CONNECTION_REQUEST: 6839 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6840 log_info("sending hci_accept_connection_request"); 6841 connection->state = ACCEPTED_CONNECTION_REQUEST; 6842 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6843 return true; 6844 } 6845 break; 6846 #endif 6847 case SEND_DISCONNECT: 6848 connection->state = SENT_DISCONNECT; 6849 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6850 return true; 6851 6852 default: 6853 break; 6854 } 6855 6856 // no further commands if connection is about to get shut down 6857 if (connection->state == SENT_DISCONNECT) continue; 6858 6859 #ifdef ENABLE_CLASSIC 6860 6861 // Handling link key request requires remote supported features 6862 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6863 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6864 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6865 6866 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6867 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6868 if (have_link_key && security_level_sufficient){ 6869 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6870 } else { 6871 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6872 } 6873 return true; 6874 } 6875 6876 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6877 log_info("denying to pin request"); 6878 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6879 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6880 return true; 6881 } 6882 6883 // security assessment requires remote features 6884 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6885 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6886 hci_ssp_assess_security_on_io_cap_request(connection); 6887 // 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 6888 } 6889 6890 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6891 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6892 // set authentication requirements: 6893 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6894 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6895 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6896 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6897 authreq |= 1; 6898 } 6899 bool bonding = hci_stack->bondable; 6900 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6901 // if we have received IO Cap Response, we're in responder role 6902 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6903 if (bonding && !remote_bonding){ 6904 log_info("Remote not bonding, dropping local flag"); 6905 bonding = false; 6906 } 6907 } 6908 if (bonding){ 6909 if (connection->bonding_flags & BONDING_DEDICATED){ 6910 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6911 } else { 6912 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6913 } 6914 } 6915 uint8_t have_oob_data = 0; 6916 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6917 if (connection->classic_oob_c_192 != NULL){ 6918 have_oob_data |= 1; 6919 } 6920 if (connection->classic_oob_c_256 != NULL){ 6921 have_oob_data |= 2; 6922 } 6923 #endif 6924 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6925 return true; 6926 } 6927 6928 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6929 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6930 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6931 return true; 6932 } 6933 6934 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6935 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6936 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6937 const uint8_t zero[16] = { 0 }; 6938 const uint8_t * r_192 = zero; 6939 const uint8_t * c_192 = zero; 6940 const uint8_t * r_256 = zero; 6941 const uint8_t * c_256 = zero; 6942 // verify P-256 OOB 6943 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6944 c_256 = connection->classic_oob_c_256; 6945 if (connection->classic_oob_r_256 != NULL) { 6946 r_256 = connection->classic_oob_r_256; 6947 } 6948 } 6949 // verify P-192 OOB 6950 if ((connection->classic_oob_c_192 != NULL)) { 6951 c_192 = connection->classic_oob_c_192; 6952 if (connection->classic_oob_r_192 != NULL) { 6953 r_192 = connection->classic_oob_r_192; 6954 } 6955 } 6956 6957 // assess security 6958 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6959 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6960 if (need_level_4 && !can_reach_level_4){ 6961 log_info("Level 4 required, but not possible -> abort"); 6962 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6963 // send oob negative reply 6964 c_256 = NULL; 6965 c_192 = NULL; 6966 } 6967 6968 // Reply 6969 if (c_256 != zero) { 6970 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6971 } else if (c_192 != zero){ 6972 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6973 } else { 6974 hci_stack->classic_oob_con_handle = connection->con_handle; 6975 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6976 } 6977 return true; 6978 } 6979 #endif 6980 6981 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6982 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6983 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6984 return true; 6985 } 6986 6987 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6988 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6989 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6990 return true; 6991 } 6992 6993 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6994 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6995 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6996 return true; 6997 } 6998 6999 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7000 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7001 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7002 connection->state = SENT_DISCONNECT; 7003 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7004 return true; 7005 } 7006 7007 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7008 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7009 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7010 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7011 return true; 7012 } 7013 7014 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7015 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7016 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7017 return true; 7018 } 7019 7020 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7021 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7022 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7023 return true; 7024 } 7025 7026 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7027 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7028 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7029 return true; 7030 } 7031 7032 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7033 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7034 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7035 return true; 7036 } 7037 7038 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7039 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7040 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7041 return true; 7042 } 7043 #endif 7044 7045 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7046 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7047 #ifdef ENABLE_CLASSIC 7048 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7049 #endif 7050 if (connection->state != SENT_DISCONNECT){ 7051 connection->state = SENT_DISCONNECT; 7052 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7053 return true; 7054 } 7055 } 7056 7057 #ifdef ENABLE_CLASSIC 7058 uint16_t sniff_min_interval; 7059 switch (connection->sniff_min_interval){ 7060 case 0: 7061 break; 7062 case 0xffff: 7063 connection->sniff_min_interval = 0; 7064 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7065 return true; 7066 default: 7067 sniff_min_interval = connection->sniff_min_interval; 7068 connection->sniff_min_interval = 0; 7069 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7070 return true; 7071 } 7072 7073 if (connection->sniff_subrating_max_latency != 0xffff){ 7074 uint16_t max_latency = connection->sniff_subrating_max_latency; 7075 connection->sniff_subrating_max_latency = 0; 7076 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7077 return true; 7078 } 7079 7080 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7081 uint8_t service_type = (uint8_t) connection->qos_service_type; 7082 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7083 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); 7084 return true; 7085 } 7086 7087 if (connection->request_role != HCI_ROLE_INVALID){ 7088 hci_role_t role = connection->request_role; 7089 connection->request_role = HCI_ROLE_INVALID; 7090 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7091 return true; 7092 } 7093 #endif 7094 7095 if (connection->gap_connection_tasks != 0){ 7096 #ifdef ENABLE_CLASSIC 7097 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7098 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7099 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7100 return true; 7101 } 7102 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7103 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7104 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7105 return true; 7106 } 7107 #endif 7108 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7109 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7110 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7111 return true; 7112 } 7113 #ifdef ENABLE_BLE 7114 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7115 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7116 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7117 return true; 7118 } 7119 #endif 7120 } 7121 7122 #ifdef ENABLE_BLE 7123 switch (connection->le_con_parameter_update_state){ 7124 // response to L2CAP CON PARAMETER UPDATE REQUEST 7125 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7126 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7127 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7128 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7129 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7130 return true; 7131 case CON_PARAMETER_UPDATE_REPLY: 7132 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7133 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7134 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7135 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7136 return true; 7137 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7138 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7139 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7140 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7141 return true; 7142 default: 7143 break; 7144 } 7145 if (connection->le_phy_update_all_phys != 0xffu){ 7146 uint8_t all_phys = connection->le_phy_update_all_phys; 7147 connection->le_phy_update_all_phys = 0xff; 7148 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); 7149 return true; 7150 } 7151 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7152 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7153 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7154 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7155 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7156 return true; 7157 } 7158 #endif 7159 #endif 7160 } 7161 return false; 7162 } 7163 7164 static void hci_run(void){ 7165 7166 // stack state sub statemachines 7167 switch (hci_stack->state) { 7168 case HCI_STATE_INITIALIZING: 7169 hci_initializing_run(); 7170 break; 7171 case HCI_STATE_HALTING: 7172 hci_halting_run(); 7173 break; 7174 case HCI_STATE_FALLING_ASLEEP: 7175 hci_falling_asleep_run(); 7176 break; 7177 default: 7178 break; 7179 } 7180 7181 // allow to run after initialization to working transition 7182 if (hci_stack->state != HCI_STATE_WORKING){ 7183 return; 7184 } 7185 7186 bool done; 7187 7188 // send continuation fragments first, as they block the prepared packet buffer 7189 done = hci_run_acl_fragments(); 7190 if (done) return; 7191 7192 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7193 done = hci_run_iso_fragments(); 7194 if (done) return; 7195 #endif 7196 7197 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7198 // send host num completed packets next as they don't require num_cmd_packets > 0 7199 if (!hci_can_send_comand_packet_transport()) return; 7200 if (hci_stack->host_completed_packets){ 7201 hci_host_num_completed_packets(); 7202 return; 7203 } 7204 #endif 7205 7206 if (!hci_can_send_command_packet_now()) return; 7207 7208 // global/non-connection oriented commands 7209 7210 7211 #ifdef ENABLE_CLASSIC 7212 // general gap classic 7213 done = hci_run_general_gap_classic(); 7214 if (done) return; 7215 #endif 7216 7217 #ifdef ENABLE_BLE 7218 // general gap le 7219 done = hci_run_general_gap_le(); 7220 if (done) return; 7221 7222 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7223 // ISO related tasks, e.g. BIG create/terminate/sync 7224 done = hci_run_iso_tasks(); 7225 if (done) return; 7226 #endif 7227 #endif 7228 7229 // send pending HCI commands 7230 hci_run_general_pending_commands(); 7231 } 7232 7233 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7234 // house-keeping 7235 7236 #ifdef ENABLE_CLASSIC 7237 bd_addr_t addr; 7238 hci_connection_t * conn; 7239 #endif 7240 #ifdef ENABLE_LE_CENTRAL 7241 uint8_t initiator_filter_policy; 7242 #endif 7243 7244 uint16_t opcode = little_endian_read_16(packet, 0); 7245 switch (opcode) { 7246 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7247 hci_stack->loopback_mode = packet[3]; 7248 break; 7249 7250 #ifdef ENABLE_CLASSIC 7251 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7252 reverse_bd_addr(&packet[3], addr); 7253 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7254 7255 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7256 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7257 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7258 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7259 } 7260 7261 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7262 if (!conn) { 7263 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7264 if (!conn) { 7265 // notify client that alloc failed 7266 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7267 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7268 } 7269 conn->state = SEND_CREATE_CONNECTION; 7270 } 7271 7272 log_info("conn state %u", conn->state); 7273 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7274 switch (conn->state) { 7275 // if connection active exists 7276 case OPEN: 7277 // and OPEN, emit connection complete command 7278 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7279 // packet not sent to controller 7280 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7281 case RECEIVED_DISCONNECTION_COMPLETE: 7282 // create connection triggered in disconnect complete event, let's do it now 7283 break; 7284 case SEND_CREATE_CONNECTION: 7285 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7286 if (hci_classic_operation_active()){ 7287 return ERROR_CODE_SUCCESS; 7288 } 7289 #endif 7290 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7291 break; 7292 default: 7293 // otherwise, just ignore as it is already in the open process 7294 // packet not sent to controller 7295 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7296 } 7297 conn->state = SENT_CREATE_CONNECTION; 7298 7299 // track outgoing connection 7300 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7301 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7302 break; 7303 7304 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7305 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7306 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7307 if (conn == NULL) { 7308 // neither SCO nor ACL connection for con handle 7309 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7310 } else { 7311 switch (conn->address_type){ 7312 case BD_ADDR_TYPE_ACL: 7313 // assert SCO connection does not exit 7314 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7315 return ERROR_CODE_COMMAND_DISALLOWED; 7316 } 7317 // allocate connection struct 7318 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7319 HCI_ROLE_MASTER); 7320 if (!conn) { 7321 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7322 } 7323 break; 7324 case BD_ADDR_TYPE_SCO: 7325 // update of existing SCO connection 7326 break; 7327 default: 7328 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7329 } 7330 } 7331 7332 // conn refers to hci connection of type sco now 7333 7334 conn->state = SENT_CREATE_CONNECTION; 7335 7336 // track outgoing connection to handle command status with error 7337 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7338 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7339 7340 // setup_synchronous_connection? Voice setting at offset 22 7341 // TODO: compare to current setting if sco connection already active 7342 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7343 break; 7344 7345 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7346 // get SCO connection 7347 reverse_bd_addr(&packet[3], addr); 7348 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7349 if (conn == NULL){ 7350 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7351 } 7352 7353 conn->state = ACCEPTED_CONNECTION_REQUEST; 7354 7355 // track outgoing connection to handle command status with error 7356 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7357 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7358 7359 // accept_synchronous_connection? Voice setting at offset 18 7360 // TODO: compare to current setting if sco connection already active 7361 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7362 break; 7363 #endif 7364 #endif 7365 7366 #ifdef ENABLE_BLE 7367 #ifdef ENABLE_LE_CENTRAL 7368 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7369 // white list used? 7370 initiator_filter_policy = packet[7]; 7371 switch (initiator_filter_policy) { 7372 case 0: 7373 // whitelist not used 7374 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7375 break; 7376 case 1: 7377 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7378 break; 7379 default: 7380 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7381 break; 7382 } 7383 // track outgoing connection 7384 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7385 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7386 break; 7387 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7388 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7389 // white list used? 7390 initiator_filter_policy = packet[3]; 7391 switch (initiator_filter_policy) { 7392 case 0: 7393 // whitelist not used 7394 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7395 break; 7396 case 1: 7397 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7398 break; 7399 default: 7400 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7401 break; 7402 } 7403 // track outgoing connection 7404 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7405 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7406 break; 7407 #endif 7408 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7409 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7410 break; 7411 #endif 7412 #endif /* ENABLE_BLE */ 7413 default: 7414 break; 7415 } 7416 7417 hci_stack->num_cmd_packets--; 7418 7419 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7420 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7421 if (err != 0){ 7422 return ERROR_CODE_HARDWARE_FAILURE; 7423 } 7424 return ERROR_CODE_SUCCESS; 7425 } 7426 7427 // disconnect because of security block 7428 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7429 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7430 if (!connection) return; 7431 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7432 } 7433 7434 7435 // Configure Secure Simple Pairing 7436 7437 #ifdef ENABLE_CLASSIC 7438 7439 // enable will enable SSP during init 7440 void gap_ssp_set_enable(int enable){ 7441 hci_stack->ssp_enable = enable; 7442 } 7443 7444 static int hci_local_ssp_activated(void){ 7445 return gap_ssp_supported() && hci_stack->ssp_enable; 7446 } 7447 7448 // if set, BTstack will respond to io capability request using authentication requirement 7449 void gap_ssp_set_io_capability(int io_capability){ 7450 hci_stack->ssp_io_capability = io_capability; 7451 } 7452 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7453 hci_stack->ssp_authentication_requirement = authentication_requirement; 7454 } 7455 7456 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7457 void gap_ssp_set_auto_accept(int auto_accept){ 7458 hci_stack->ssp_auto_accept = auto_accept; 7459 } 7460 7461 void gap_secure_connections_enable(bool enable){ 7462 hci_stack->secure_connections_enable = enable; 7463 } 7464 bool gap_secure_connections_active(void){ 7465 return hci_stack->secure_connections_active; 7466 } 7467 7468 #endif 7469 7470 // va_list part of hci_send_cmd 7471 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7472 if (!hci_can_send_command_packet_now()){ 7473 log_error("hci_send_cmd called but cannot send packet now"); 7474 return ERROR_CODE_COMMAND_DISALLOWED; 7475 } 7476 7477 // for HCI INITIALIZATION 7478 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7479 hci_stack->last_cmd_opcode = cmd->opcode; 7480 7481 hci_reserve_packet_buffer(); 7482 uint8_t * packet = hci_stack->hci_packet_buffer; 7483 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7484 uint8_t status = hci_send_cmd_packet(packet, size); 7485 7486 // release packet buffer on error or for synchronous transport implementations 7487 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7488 hci_release_packet_buffer(); 7489 hci_emit_transport_packet_sent(); 7490 } 7491 7492 return status; 7493 } 7494 7495 /** 7496 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7497 */ 7498 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7499 va_list argptr; 7500 va_start(argptr, cmd); 7501 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7502 va_end(argptr); 7503 return status; 7504 } 7505 7506 // Create various non-HCI events. 7507 // TODO: generalize, use table similar to hci_create_command 7508 7509 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7510 // dump packet 7511 if (dump) { 7512 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7513 } 7514 7515 // dispatch to all event handlers 7516 btstack_linked_list_iterator_t it; 7517 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7518 while (btstack_linked_list_iterator_has_next(&it)){ 7519 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7520 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7521 } 7522 } 7523 7524 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7525 if (!hci_stack->acl_packet_handler) return; 7526 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7527 } 7528 7529 #ifdef ENABLE_CLASSIC 7530 static void hci_notify_if_sco_can_send_now(void){ 7531 // notify SCO sender if waiting 7532 if (!hci_stack->sco_waiting_for_can_send_now) return; 7533 if (hci_can_send_sco_packet_now()){ 7534 hci_stack->sco_waiting_for_can_send_now = 0; 7535 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7536 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7537 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7538 } 7539 } 7540 7541 // parsing end emitting has been merged to reduce code size 7542 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7543 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7544 7545 uint8_t * eir_data; 7546 ad_context_t context; 7547 const uint8_t * name; 7548 uint8_t name_len; 7549 7550 if (size < 3) return; 7551 7552 int event_type = hci_event_packet_get_type(packet); 7553 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7554 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7555 7556 switch (event_type){ 7557 case HCI_EVENT_INQUIRY_RESULT: 7558 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7559 if (size != (3 + (num_responses * 14))) return; 7560 break; 7561 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7562 if (size != 257) return; 7563 if (num_responses != 1) return; 7564 break; 7565 default: 7566 return; 7567 } 7568 7569 // event[1] is set at the end 7570 int i; 7571 for (i=0; i<num_responses;i++){ 7572 memset(event, 0, sizeof(event)); 7573 event[0] = GAP_EVENT_INQUIRY_RESULT; 7574 uint8_t event_size = 27; // if name is not set by EIR 7575 7576 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7577 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7578 (void)memcpy(&event[9], 7579 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7580 3); // class of device 7581 (void)memcpy(&event[12], 7582 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7583 2); // clock offset 7584 7585 switch (event_type){ 7586 case HCI_EVENT_INQUIRY_RESULT: 7587 // 14,15,16,17 = 0, size 18 7588 break; 7589 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7590 event[14] = 1; 7591 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7592 // 16,17 = 0, size 18 7593 break; 7594 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7595 event[14] = 1; 7596 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7597 // EIR packets only contain a single inquiry response 7598 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7599 name = NULL; 7600 // Iterate over EIR data 7601 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7602 uint8_t data_type = ad_iterator_get_data_type(&context); 7603 uint8_t data_size = ad_iterator_get_data_len(&context); 7604 const uint8_t * data = ad_iterator_get_data(&context); 7605 // Prefer Complete Local Name over Shortened Local Name 7606 switch (data_type){ 7607 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7608 if (name) continue; 7609 /* fall through */ 7610 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7611 name = data; 7612 name_len = data_size; 7613 break; 7614 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7615 if (data_size != 8) break; 7616 event[16] = 1; 7617 memcpy(&event[17], data, 8); 7618 break; 7619 default: 7620 break; 7621 } 7622 } 7623 if (name){ 7624 event[25] = 1; 7625 // truncate name if needed 7626 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7627 event[26] = len; 7628 (void)memcpy(&event[27], name, len); 7629 event_size += len; 7630 } 7631 break; 7632 default: 7633 return; 7634 } 7635 event[1] = event_size - 2; 7636 hci_emit_event(event, event_size, 1); 7637 } 7638 } 7639 #endif 7640 7641 void hci_emit_state(void){ 7642 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7643 uint8_t event[3]; 7644 event[0] = BTSTACK_EVENT_STATE; 7645 event[1] = sizeof(event) - 2u; 7646 event[2] = hci_stack->state; 7647 hci_emit_event(event, sizeof(event), 1); 7648 } 7649 7650 #ifdef ENABLE_CLASSIC 7651 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7652 uint8_t event[13]; 7653 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7654 event[1] = sizeof(event) - 2; 7655 event[2] = status; 7656 little_endian_store_16(event, 3, con_handle); 7657 reverse_bd_addr(address, &event[5]); 7658 event[11] = 1; // ACL connection 7659 event[12] = 0; // encryption disabled 7660 hci_emit_event(event, sizeof(event), 1); 7661 } 7662 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7663 if (disable_l2cap_timeouts) return; 7664 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7665 uint8_t event[4]; 7666 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7667 event[1] = sizeof(event) - 2; 7668 little_endian_store_16(event, 2, conn->con_handle); 7669 hci_emit_event(event, sizeof(event), 1); 7670 } 7671 #endif 7672 7673 #ifdef ENABLE_BLE 7674 #ifdef ENABLE_LE_CENTRAL 7675 static void hci_emit_le_connection_complete(uint8_t address_type, const bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7676 uint8_t event[21]; 7677 event[0] = HCI_EVENT_LE_META; 7678 event[1] = sizeof(event) - 2u; 7679 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7680 event[3] = status; 7681 little_endian_store_16(event, 4, con_handle); 7682 event[6] = 0; // TODO: role 7683 event[7] = address_type; 7684 reverse_bd_addr(address, &event[8]); 7685 little_endian_store_16(event, 14, 0); // interval 7686 little_endian_store_16(event, 16, 0); // latency 7687 little_endian_store_16(event, 18, 0); // supervision timeout 7688 event[20] = 0; // master clock accuracy 7689 hci_emit_event(event, sizeof(event), 1); 7690 } 7691 #endif 7692 #endif 7693 7694 static void hci_emit_transport_packet_sent(void){ 7695 // notify upper stack that it might be possible to send again 7696 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7697 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7698 } 7699 7700 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7701 uint8_t event[6]; 7702 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7703 event[1] = sizeof(event) - 2u; 7704 event[2] = 0; // status = OK 7705 little_endian_store_16(event, 3, con_handle); 7706 event[5] = reason; 7707 hci_emit_event(event, sizeof(event), 1); 7708 } 7709 7710 static void hci_emit_nr_connections_changed(void){ 7711 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7712 uint8_t event[3]; 7713 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7714 event[1] = sizeof(event) - 2u; 7715 event[2] = nr_hci_connections(); 7716 hci_emit_event(event, sizeof(event), 1); 7717 } 7718 7719 static void hci_emit_hci_open_failed(void){ 7720 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7721 uint8_t event[2]; 7722 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7723 event[1] = sizeof(event) - 2u; 7724 hci_emit_event(event, sizeof(event), 1); 7725 } 7726 7727 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7728 log_info("hci_emit_dedicated_bonding_result %u ", status); 7729 uint8_t event[9]; 7730 int pos = 0; 7731 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7732 event[pos++] = sizeof(event) - 2u; 7733 event[pos++] = status; 7734 reverse_bd_addr(address, &event[pos]); 7735 hci_emit_event(event, sizeof(event), 1); 7736 } 7737 7738 7739 #ifdef ENABLE_CLASSIC 7740 7741 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7742 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7743 uint8_t event[5]; 7744 int pos = 0; 7745 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7746 event[pos++] = sizeof(event) - 2; 7747 little_endian_store_16(event, 2, con_handle); 7748 pos += 2; 7749 event[pos++] = level; 7750 hci_emit_event(event, sizeof(event), 1); 7751 } 7752 7753 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7754 if (!connection) return LEVEL_0; 7755 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7756 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7757 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7758 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7759 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7760 // LEVEL 4 always requires 128 bit encrytion key size 7761 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7762 security_level = LEVEL_3; 7763 } 7764 return security_level; 7765 } 7766 7767 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7768 uint8_t event[4]; 7769 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7770 event[1] = sizeof(event) - 2; 7771 event[2] = discoverable; 7772 event[3] = connectable; 7773 hci_emit_event(event, sizeof(event), 1); 7774 } 7775 7776 // query if remote side supports eSCO 7777 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7778 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7779 if (!connection) return false; 7780 return (connection->remote_supported_features[0] & 1) != 0; 7781 } 7782 7783 static bool hci_ssp_supported(hci_connection_t * connection){ 7784 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7785 return (connection->bonding_flags & mask) == mask; 7786 } 7787 7788 // query if remote side supports SSP 7789 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7790 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7791 if (!connection) return false; 7792 return hci_ssp_supported(connection) ? 1 : 0; 7793 } 7794 7795 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7796 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7797 } 7798 7799 /** 7800 * Check if remote supported features query has completed 7801 */ 7802 bool hci_remote_features_available(hci_con_handle_t handle){ 7803 hci_connection_t * connection = hci_connection_for_handle(handle); 7804 if (!connection) return false; 7805 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7806 } 7807 7808 /** 7809 * Trigger remote supported features query 7810 */ 7811 7812 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7813 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7814 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7815 } 7816 } 7817 7818 void hci_remote_features_query(hci_con_handle_t con_handle){ 7819 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7820 if (!connection) return; 7821 hci_trigger_remote_features_for_connection(connection); 7822 hci_run(); 7823 } 7824 7825 // GAP API 7826 /** 7827 * @bbrief enable/disable bonding. default is enabled 7828 * @praram enabled 7829 */ 7830 void gap_set_bondable_mode(int enable){ 7831 hci_stack->bondable = enable ? 1 : 0; 7832 } 7833 /** 7834 * @brief Get bondable mode. 7835 * @return 1 if bondable 7836 */ 7837 int gap_get_bondable_mode(void){ 7838 return hci_stack->bondable; 7839 } 7840 7841 /** 7842 * @brief map link keys to security levels 7843 */ 7844 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7845 switch (link_key_type){ 7846 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7847 return LEVEL_4; 7848 case COMBINATION_KEY: 7849 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7850 return LEVEL_3; 7851 default: 7852 return LEVEL_2; 7853 } 7854 } 7855 7856 /** 7857 * @brief map link keys to secure connection yes/no 7858 */ 7859 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7860 switch (link_key_type){ 7861 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7862 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7863 return true; 7864 default: 7865 return false; 7866 } 7867 } 7868 7869 /** 7870 * @brief map link keys to authenticated 7871 */ 7872 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7873 switch (link_key_type){ 7874 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7875 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7876 return true; 7877 default: 7878 return false; 7879 } 7880 } 7881 7882 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7883 log_info("gap_mitm_protection_required_for_security_level %u", level); 7884 return level > LEVEL_2; 7885 } 7886 7887 /** 7888 * @brief get current security level 7889 */ 7890 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7891 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7892 if (!connection) return LEVEL_0; 7893 return gap_security_level_for_connection(connection); 7894 } 7895 7896 /** 7897 * @brief request connection to device to 7898 * @result GAP_AUTHENTICATION_RESULT 7899 */ 7900 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7901 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7902 if (!connection){ 7903 hci_emit_security_level(con_handle, LEVEL_0); 7904 return; 7905 } 7906 7907 btstack_assert(hci_is_le_connection(connection) == false); 7908 7909 // Core Spec 5.2, GAP 5.2.2: "When in Secure Connections Only mode, all services (except those allowed to have Security Mode 4, Level 0) 7910 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7911 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7912 requested_level = LEVEL_4; 7913 } 7914 7915 gap_security_level_t current_level = gap_security_level(con_handle); 7916 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7917 requested_level, connection->requested_security_level, current_level); 7918 7919 // authentication active if authentication request was sent or planned level > 0 7920 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7921 if (authentication_active){ 7922 // authentication already active 7923 if (connection->requested_security_level < requested_level){ 7924 // increase requested level as new level is higher 7925 // TODO: handle re-authentication when done 7926 connection->requested_security_level = requested_level; 7927 } 7928 } else { 7929 // no request active, notify if security sufficient 7930 if (requested_level <= current_level){ 7931 hci_emit_security_level(con_handle, current_level); 7932 return; 7933 } 7934 7935 // store request 7936 connection->requested_security_level = requested_level; 7937 7938 // start to authenticate connection 7939 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7940 7941 // request remote features if not already active, also trigger hci_run 7942 hci_remote_features_query(con_handle); 7943 } 7944 } 7945 7946 /** 7947 * @brief start dedicated bonding with device. disconnect after bonding 7948 * @param device 7949 * @param request MITM protection 7950 * @result GAP_DEDICATED_BONDING_COMPLETE 7951 */ 7952 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7953 7954 // create connection state machine 7955 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7956 7957 if (!connection){ 7958 return BTSTACK_MEMORY_ALLOC_FAILED; 7959 } 7960 7961 // delete link key 7962 gap_drop_link_key_for_bd_addr(device); 7963 7964 // configure LEVEL_2/3, dedicated bonding 7965 connection->state = SEND_CREATE_CONNECTION; 7966 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7967 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7968 connection->bonding_flags = BONDING_DEDICATED; 7969 7970 hci_run(); 7971 7972 return 0; 7973 } 7974 7975 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 7976 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7977 if (connection == NULL){ 7978 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7979 } 7980 if (defer){ 7981 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 7982 } else { 7983 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 7984 // trigger disconnect 7985 hci_run(); 7986 } 7987 return ERROR_CODE_SUCCESS; 7988 } 7989 7990 void gap_set_local_name(const char * local_name){ 7991 hci_stack->local_name = local_name; 7992 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7993 // also update EIR if not set by user 7994 if (hci_stack->eir_data == NULL){ 7995 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7996 } 7997 hci_run(); 7998 } 7999 #endif 8000 8001 8002 #ifdef ENABLE_BLE 8003 8004 #ifdef ENABLE_LE_CENTRAL 8005 void gap_start_scan(void){ 8006 hci_stack->le_scanning_enabled = true; 8007 hci_run(); 8008 } 8009 8010 void gap_stop_scan(void){ 8011 hci_stack->le_scanning_enabled = false; 8012 hci_run(); 8013 } 8014 8015 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8016 hci_stack->le_scan_type = scan_type; 8017 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8018 hci_stack->le_scan_interval = scan_interval; 8019 hci_stack->le_scan_window = scan_window; 8020 hci_stack->le_scanning_param_update = true; 8021 hci_run(); 8022 } 8023 8024 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8025 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8026 } 8027 8028 void gap_set_scan_duplicate_filter(bool enabled){ 8029 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8030 } 8031 8032 void gap_set_scan_phys(uint8_t phys){ 8033 // LE Coded and LE 1M PHY 8034 hci_stack->le_scan_phys = phys & 0x05; 8035 } 8036 8037 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8038 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8039 if (!conn){ 8040 // disallow if le connection is already outgoing 8041 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8042 log_error("le connection already active"); 8043 return ERROR_CODE_COMMAND_DISALLOWED; 8044 } 8045 8046 log_info("gap_connect: no connection exists yet, creating context"); 8047 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8048 if (!conn){ 8049 // notify client that alloc failed 8050 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8051 log_info("gap_connect: failed to alloc hci_connection_t"); 8052 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8053 } 8054 8055 // set le connecting state 8056 if (hci_is_le_connection_type(addr_type)){ 8057 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8058 } 8059 8060 conn->state = SEND_CREATE_CONNECTION; 8061 log_info("gap_connect: send create connection next"); 8062 hci_run(); 8063 return ERROR_CODE_SUCCESS; 8064 } 8065 8066 if (!hci_is_le_connection(conn) || 8067 (conn->state == SEND_CREATE_CONNECTION) || 8068 (conn->state == SENT_CREATE_CONNECTION)) { 8069 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8070 log_error("gap_connect: classic connection or connect is already being created"); 8071 return GATT_CLIENT_IN_WRONG_STATE; 8072 } 8073 8074 // check if connection was just disconnected 8075 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8076 log_info("gap_connect: send create connection (again)"); 8077 conn->state = SEND_CREATE_CONNECTION; 8078 hci_run(); 8079 return ERROR_CODE_SUCCESS; 8080 } 8081 8082 log_info("gap_connect: context exists with state %u", conn->state); 8083 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8084 hci_run(); 8085 return ERROR_CODE_SUCCESS; 8086 } 8087 8088 // @assumption: only a single outgoing LE Connection exists 8089 static hci_connection_t * gap_get_outgoing_connection(void){ 8090 btstack_linked_item_t *it; 8091 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8092 hci_connection_t * conn = (hci_connection_t *) it; 8093 if (!hci_is_le_connection(conn)) continue; 8094 switch (conn->state){ 8095 case SEND_CREATE_CONNECTION: 8096 case SENT_CREATE_CONNECTION: 8097 return conn; 8098 default: 8099 break; 8100 }; 8101 } 8102 return NULL; 8103 } 8104 8105 uint8_t gap_connect_cancel(void){ 8106 hci_connection_t * conn; 8107 switch (hci_stack->le_connecting_request){ 8108 case LE_CONNECTING_IDLE: 8109 break; 8110 case LE_CONNECTING_WHITELIST: 8111 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8112 hci_run(); 8113 break; 8114 case LE_CONNECTING_DIRECT: 8115 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8116 conn = gap_get_outgoing_connection(); 8117 if (conn == NULL){ 8118 hci_run(); 8119 } else { 8120 switch (conn->state){ 8121 case SEND_CREATE_CONNECTION: 8122 // skip sending create connection and emit event instead 8123 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8124 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8125 btstack_memory_hci_connection_free( conn ); 8126 break; 8127 case SENT_CREATE_CONNECTION: 8128 // let hci_run_general_gap_le cancel outgoing connection 8129 hci_run(); 8130 break; 8131 default: 8132 break; 8133 } 8134 } 8135 break; 8136 default: 8137 btstack_unreachable(); 8138 break; 8139 } 8140 return ERROR_CODE_SUCCESS; 8141 } 8142 8143 /** 8144 * @brief Set connection parameters for outgoing connections 8145 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8146 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8147 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8148 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8149 * @param conn_latency, default: 4 8150 * @param supervision_timeout (unit: 10ms), default: 720 ms 8151 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8152 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8153 */ 8154 8155 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8156 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8157 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8158 hci_stack->le_connection_scan_interval = conn_scan_interval; 8159 hci_stack->le_connection_scan_window = conn_scan_window; 8160 hci_stack->le_connection_interval_min = conn_interval_min; 8161 hci_stack->le_connection_interval_max = conn_interval_max; 8162 hci_stack->le_connection_latency = conn_latency; 8163 hci_stack->le_supervision_timeout = supervision_timeout; 8164 hci_stack->le_minimum_ce_length = min_ce_length; 8165 hci_stack->le_maximum_ce_length = max_ce_length; 8166 } 8167 8168 void gap_set_connection_phys(uint8_t phys){ 8169 // LE Coded, LE 1M, LE 2M PHY 8170 hci_stack->le_connection_phys = phys & 7; 8171 } 8172 8173 #endif 8174 8175 /** 8176 * @brief Updates the connection parameters for a given LE connection 8177 * @param handle 8178 * @param conn_interval_min (unit: 1.25ms) 8179 * @param conn_interval_max (unit: 1.25ms) 8180 * @param conn_latency 8181 * @param supervision_timeout (unit: 10ms) 8182 * @return 0 if ok 8183 */ 8184 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8185 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8186 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8187 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8188 connection->le_conn_interval_min = conn_interval_min; 8189 connection->le_conn_interval_max = conn_interval_max; 8190 connection->le_conn_latency = conn_latency; 8191 connection->le_supervision_timeout = supervision_timeout; 8192 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8193 hci_run(); 8194 return 0; 8195 } 8196 8197 /** 8198 * @brief Request an update of the connection parameter for a given LE connection 8199 * @param handle 8200 * @param conn_interval_min (unit: 1.25ms) 8201 * @param conn_interval_max (unit: 1.25ms) 8202 * @param conn_latency 8203 * @param supervision_timeout (unit: 10ms) 8204 * @return 0 if ok 8205 */ 8206 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8207 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8208 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8209 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8210 connection->le_conn_interval_min = conn_interval_min; 8211 connection->le_conn_interval_max = conn_interval_max; 8212 connection->le_conn_latency = conn_latency; 8213 connection->le_supervision_timeout = supervision_timeout; 8214 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8215 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8216 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8217 return 0; 8218 } 8219 8220 #ifdef ENABLE_LE_PERIPHERAL 8221 8222 /** 8223 * @brief Set Advertisement Data 8224 * @param advertising_data_length 8225 * @param advertising_data (max 31 octets) 8226 * @note data is not copied, pointer has to stay valid 8227 */ 8228 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8229 hci_stack->le_advertisements_data_len = advertising_data_length; 8230 hci_stack->le_advertisements_data = advertising_data; 8231 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8232 hci_run(); 8233 } 8234 8235 /** 8236 * @brief Set Scan Response Data 8237 * @param advertising_data_length 8238 * @param advertising_data (max 31 octets) 8239 * @note data is not copied, pointer has to stay valid 8240 */ 8241 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8242 hci_stack->le_scan_response_data_len = scan_response_data_length; 8243 hci_stack->le_scan_response_data = scan_response_data; 8244 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8245 hci_run(); 8246 } 8247 8248 /** 8249 * @brief Set Advertisement Parameters 8250 * @param adv_int_min 8251 * @param adv_int_max 8252 * @param adv_type 8253 * @param direct_address_type 8254 * @param direct_address 8255 * @param channel_map 8256 * @param filter_policy 8257 * 8258 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8259 */ 8260 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8261 uint8_t direct_address_typ, bd_addr_t direct_address, 8262 uint8_t channel_map, uint8_t filter_policy) { 8263 8264 hci_stack->le_advertisements_interval_min = adv_int_min; 8265 hci_stack->le_advertisements_interval_max = adv_int_max; 8266 hci_stack->le_advertisements_type = adv_type; 8267 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8268 hci_stack->le_advertisements_channel_map = channel_map; 8269 hci_stack->le_advertisements_filter_policy = filter_policy; 8270 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8271 6); 8272 8273 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8274 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8275 hci_run(); 8276 } 8277 8278 /** 8279 * @brief Enable/Disable Advertisements 8280 * @param enabled 8281 */ 8282 void gap_advertisements_enable(int enabled){ 8283 if (enabled == 0){ 8284 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8285 } else { 8286 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8287 } 8288 hci_update_advertisements_enabled_for_current_roles(); 8289 hci_run(); 8290 } 8291 8292 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8293 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8294 btstack_linked_list_iterator_t it; 8295 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8296 while (btstack_linked_list_iterator_has_next(&it)){ 8297 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8298 if ( item->advertising_handle == advertising_handle ) { 8299 return item; 8300 } 8301 } 8302 return NULL; 8303 } 8304 8305 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8306 // find free advertisement handle 8307 uint8_t advertisement_handle; 8308 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8309 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8310 } 8311 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8312 // clear 8313 memset(storage, 0, sizeof(le_advertising_set_t)); 8314 // copy params 8315 storage->advertising_handle = advertisement_handle; 8316 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8317 // add to list 8318 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8319 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8320 *out_advertising_handle = advertisement_handle; 8321 // set tasks and start 8322 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8323 hci_run(); 8324 return ERROR_CODE_SUCCESS; 8325 } 8326 8327 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8328 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8329 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8330 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8331 // set tasks and start 8332 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8333 hci_run(); 8334 return ERROR_CODE_SUCCESS; 8335 } 8336 8337 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8338 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8339 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8340 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8341 return ERROR_CODE_SUCCESS; 8342 } 8343 8344 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8345 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8346 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8347 memcpy(advertising_set->random_address, random_address, 6); 8348 // set tasks and start 8349 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8350 hci_run(); 8351 return ERROR_CODE_SUCCESS; 8352 } 8353 8354 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8355 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8356 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8357 advertising_set->adv_data = advertising_data; 8358 advertising_set->adv_data_len = advertising_data_length; 8359 // set tasks and start 8360 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8361 hci_run(); 8362 return ERROR_CODE_SUCCESS; 8363 } 8364 8365 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){ 8366 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8367 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8368 advertising_set->scan_data = scan_response_data; 8369 advertising_set->scan_data_len = scan_response_data_length; 8370 // set tasks and start 8371 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8372 hci_run(); 8373 return ERROR_CODE_SUCCESS; 8374 } 8375 8376 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8377 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8378 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8379 advertising_set->enable_timeout = timeout; 8380 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8381 // set tasks and start 8382 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8383 hci_run(); 8384 return ERROR_CODE_SUCCESS; 8385 } 8386 8387 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8388 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8389 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8390 // set tasks and start 8391 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8392 hci_run(); 8393 return ERROR_CODE_SUCCESS; 8394 } 8395 8396 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8397 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8398 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8399 // set tasks and start 8400 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8401 hci_run(); 8402 return ERROR_CODE_SUCCESS; 8403 } 8404 8405 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8406 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8407 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8408 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8409 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8410 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8411 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8412 // set tasks and start 8413 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8414 hci_run(); 8415 return ERROR_CODE_SUCCESS; 8416 } 8417 8418 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8419 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8420 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8421 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8422 return ERROR_CODE_SUCCESS; 8423 } 8424 8425 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8426 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8427 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8428 advertising_set->periodic_data = periodic_data; 8429 advertising_set->periodic_data_len = periodic_data_length; 8430 // set tasks and start 8431 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8432 hci_run(); 8433 return ERROR_CODE_SUCCESS; 8434 } 8435 8436 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8437 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8438 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8439 // set tasks and start 8440 advertising_set->periodic_include_adi = include_adi; 8441 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8442 hci_run(); 8443 return ERROR_CODE_SUCCESS; 8444 } 8445 8446 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8447 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8448 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8449 // set tasks and start 8450 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8451 hci_run(); 8452 return ERROR_CODE_SUCCESS; 8453 } 8454 8455 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8456 hci_stack->le_past_mode = mode; 8457 hci_stack->le_past_skip = skip; 8458 hci_stack->le_past_sync_timeout = sync_timeout; 8459 hci_stack->le_past_cte_type = cte_type; 8460 hci_stack->le_past_set_default_params = true; 8461 hci_run(); 8462 return ERROR_CODE_SUCCESS; 8463 } 8464 8465 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8466 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8467 if (hci_connection == NULL){ 8468 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8469 } 8470 hci_connection->le_past_sync_handle = sync_handle; 8471 hci_connection->le_past_service_data = service_data; 8472 hci_run(); 8473 return ERROR_CODE_SUCCESS; 8474 } 8475 8476 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8477 8478 #endif 8479 8480 #endif 8481 8482 void hci_le_set_own_address_type(uint8_t own_address_type){ 8483 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8484 if (own_address_type == hci_stack->le_own_addr_type) return; 8485 hci_stack->le_own_addr_type = own_address_type; 8486 8487 #ifdef ENABLE_LE_PERIPHERAL 8488 // update advertisement parameters, too 8489 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8490 hci_run(); 8491 #endif 8492 #ifdef ENABLE_LE_CENTRAL 8493 // note: we don't update scan parameters or modify ongoing connection attempts 8494 #endif 8495 } 8496 8497 void hci_le_random_address_set(const bd_addr_t random_address){ 8498 memcpy(hci_stack->le_random_address, random_address, 6); 8499 hci_stack->le_random_address_set = true; 8500 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8501 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8502 if (hci_extended_advertising_supported()){ 8503 // force advertising set creation for LE Set Advertising Set Random Address 8504 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8505 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8506 } 8507 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8508 } 8509 #endif 8510 hci_run(); 8511 } 8512 8513 #endif 8514 8515 uint8_t gap_disconnect(hci_con_handle_t handle){ 8516 hci_connection_t * conn = hci_connection_for_handle(handle); 8517 if (!conn){ 8518 hci_emit_disconnection_complete(handle, 0); 8519 return 0; 8520 } 8521 // ignore if already disconnected 8522 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8523 return 0; 8524 } 8525 conn->state = SEND_DISCONNECT; 8526 hci_run(); 8527 return 0; 8528 } 8529 8530 int gap_read_rssi(hci_con_handle_t con_handle){ 8531 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8532 if (hci_connection == NULL) return 0; 8533 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8534 hci_run(); 8535 return 1; 8536 } 8537 8538 /** 8539 * @brief Get connection type 8540 * @param con_handle 8541 * @result connection_type 8542 */ 8543 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8544 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8545 if (!conn) return GAP_CONNECTION_INVALID; 8546 switch (conn->address_type){ 8547 case BD_ADDR_TYPE_LE_PUBLIC: 8548 case BD_ADDR_TYPE_LE_RANDOM: 8549 return GAP_CONNECTION_LE; 8550 case BD_ADDR_TYPE_SCO: 8551 return GAP_CONNECTION_SCO; 8552 case BD_ADDR_TYPE_ACL: 8553 return GAP_CONNECTION_ACL; 8554 default: 8555 return GAP_CONNECTION_INVALID; 8556 } 8557 } 8558 8559 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8560 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8561 if (!conn) return HCI_ROLE_INVALID; 8562 return (hci_role_t) conn->role; 8563 } 8564 8565 8566 #ifdef ENABLE_CLASSIC 8567 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8568 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8569 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8570 conn->request_role = role; 8571 hci_run(); 8572 return ERROR_CODE_SUCCESS; 8573 } 8574 #endif 8575 8576 #ifdef ENABLE_BLE 8577 8578 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){ 8579 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8580 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8581 8582 conn->le_phy_update_all_phys = all_phys; 8583 conn->le_phy_update_tx_phys = tx_phys; 8584 conn->le_phy_update_rx_phys = rx_phys; 8585 conn->le_phy_update_phy_options = phy_options; 8586 8587 hci_run(); 8588 8589 return 0; 8590 } 8591 8592 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8593 // check if already in list 8594 btstack_linked_list_iterator_t it; 8595 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8596 while (btstack_linked_list_iterator_has_next(&it)) { 8597 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8598 if (entry->address_type != address_type) { 8599 continue; 8600 } 8601 if (memcmp(entry->address, address, 6) != 0) { 8602 continue; 8603 } 8604 // disallow if already scheduled to add 8605 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8606 return ERROR_CODE_COMMAND_DISALLOWED; 8607 } 8608 // still on controller, but scheduled to remove -> re-add 8609 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8610 return ERROR_CODE_SUCCESS; 8611 } 8612 // alloc and add to list 8613 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8614 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8615 entry->address_type = address_type; 8616 (void)memcpy(entry->address, address, 6); 8617 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8618 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8619 return ERROR_CODE_SUCCESS; 8620 } 8621 8622 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8623 btstack_linked_list_iterator_t it; 8624 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8625 while (btstack_linked_list_iterator_has_next(&it)){ 8626 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8627 if (entry->address_type != address_type) { 8628 continue; 8629 } 8630 if (memcmp(entry->address, address, 6) != 0) { 8631 continue; 8632 } 8633 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8634 // remove from controller if already present 8635 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8636 } else { 8637 // directly remove entry from whitelist 8638 btstack_linked_list_iterator_remove(&it); 8639 btstack_memory_whitelist_entry_free(entry); 8640 } 8641 return ERROR_CODE_SUCCESS; 8642 } 8643 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8644 } 8645 8646 static void hci_whitelist_clear(void){ 8647 btstack_linked_list_iterator_t it; 8648 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8649 while (btstack_linked_list_iterator_has_next(&it)){ 8650 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8651 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8652 // remove from controller if already present 8653 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8654 continue; 8655 } 8656 // directly remove entry from whitelist 8657 btstack_linked_list_iterator_remove(&it); 8658 btstack_memory_whitelist_entry_free(entry); 8659 } 8660 } 8661 8662 /** 8663 * @brief Clear Whitelist 8664 * @return 0 if ok 8665 */ 8666 uint8_t gap_whitelist_clear(void){ 8667 hci_whitelist_clear(); 8668 hci_run(); 8669 return ERROR_CODE_SUCCESS; 8670 } 8671 8672 /** 8673 * @brief Add Device to Whitelist 8674 * @param address_typ 8675 * @param address 8676 * @return 0 if ok 8677 */ 8678 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8679 uint8_t status = hci_whitelist_add(address_type, address); 8680 if (status){ 8681 return status; 8682 } 8683 hci_run(); 8684 return ERROR_CODE_SUCCESS; 8685 } 8686 8687 /** 8688 * @brief Remove Device from Whitelist 8689 * @param address_typ 8690 * @param address 8691 * @return 0 if ok 8692 */ 8693 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8694 uint8_t status = hci_whitelist_remove(address_type, address); 8695 if (status){ 8696 return status; 8697 } 8698 hci_run(); 8699 return ERROR_CODE_SUCCESS; 8700 } 8701 8702 #ifdef ENABLE_LE_CENTRAL 8703 /** 8704 * @brief Connect with Whitelist 8705 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8706 * @return - if ok 8707 */ 8708 uint8_t gap_connect_with_whitelist(void){ 8709 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8710 return ERROR_CODE_COMMAND_DISALLOWED; 8711 } 8712 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8713 hci_run(); 8714 return ERROR_CODE_SUCCESS; 8715 } 8716 8717 /** 8718 * @brief Auto Connection Establishment - Start Connecting to device 8719 * @param address_typ 8720 * @param address 8721 * @return 0 if ok 8722 */ 8723 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8724 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8725 return ERROR_CODE_COMMAND_DISALLOWED; 8726 } 8727 8728 uint8_t status = hci_whitelist_add(address_type, address); 8729 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8730 return status; 8731 } 8732 8733 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8734 8735 hci_run(); 8736 return ERROR_CODE_SUCCESS; 8737 } 8738 8739 /** 8740 * @brief Auto Connection Establishment - Stop Connecting to device 8741 * @param address_typ 8742 * @param address 8743 * @return 0 if ok 8744 */ 8745 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8746 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8747 return ERROR_CODE_COMMAND_DISALLOWED; 8748 } 8749 8750 hci_whitelist_remove(address_type, address); 8751 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8752 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8753 } 8754 hci_run(); 8755 return 0; 8756 } 8757 8758 /** 8759 * @brief Auto Connection Establishment - Stop everything 8760 * @note Convenience function to stop all active auto connection attempts 8761 */ 8762 uint8_t gap_auto_connection_stop_all(void){ 8763 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8764 return ERROR_CODE_COMMAND_DISALLOWED; 8765 } 8766 hci_whitelist_clear(); 8767 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8768 hci_run(); 8769 return ERROR_CODE_SUCCESS; 8770 } 8771 8772 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8773 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8774 if (!conn) return 0; 8775 return conn->le_connection_interval; 8776 } 8777 #endif 8778 #endif 8779 8780 #ifdef ENABLE_CLASSIC 8781 /** 8782 * @brief Set Extended Inquiry Response data 8783 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8784 * @note has to be done before stack starts up 8785 */ 8786 void gap_set_extended_inquiry_response(const uint8_t * data){ 8787 hci_stack->eir_data = data; 8788 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8789 hci_run(); 8790 } 8791 8792 /** 8793 * @brief Start GAP Classic Inquiry 8794 * @param duration in 1.28s units 8795 * @return 0 if ok 8796 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8797 */ 8798 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8799 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8800 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8801 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8802 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8803 } 8804 hci_stack->inquiry_state = duration_in_1280ms_units; 8805 hci_stack->inquiry_max_period_length = 0; 8806 hci_stack->inquiry_min_period_length = 0; 8807 hci_run(); 8808 return 0; 8809 } 8810 8811 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8812 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8813 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8814 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8815 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8816 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8817 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8818 8819 hci_stack->inquiry_state = duration; 8820 hci_stack->inquiry_max_period_length = max_period_length; 8821 hci_stack->inquiry_min_period_length = min_period_length; 8822 hci_run(); 8823 return 0; 8824 } 8825 8826 /** 8827 * @brief Stop GAP Classic Inquiry 8828 * @return 0 if ok 8829 */ 8830 int gap_inquiry_stop(void){ 8831 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8832 // emit inquiry complete event, before it even started 8833 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8834 hci_emit_event(event, sizeof(event), 1); 8835 return 0; 8836 } 8837 switch (hci_stack->inquiry_state){ 8838 case GAP_INQUIRY_STATE_ACTIVE: 8839 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8840 hci_run(); 8841 return ERROR_CODE_SUCCESS; 8842 case GAP_INQUIRY_STATE_PERIODIC: 8843 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8844 hci_run(); 8845 return ERROR_CODE_SUCCESS; 8846 default: 8847 return ERROR_CODE_COMMAND_DISALLOWED; 8848 } 8849 } 8850 8851 void gap_inquiry_set_lap(uint32_t lap){ 8852 hci_stack->inquiry_lap = lap; 8853 } 8854 8855 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8856 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8857 hci_stack->inquiry_scan_window = inquiry_scan_window; 8858 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8859 hci_run(); 8860 } 8861 8862 8863 /** 8864 * @brief Remote Name Request 8865 * @param addr 8866 * @param page_scan_repetition_mode 8867 * @param clock_offset only used when bit 15 is set 8868 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8869 */ 8870 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8871 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8872 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8873 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8874 hci_stack->remote_name_clock_offset = clock_offset; 8875 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8876 hci_run(); 8877 return 0; 8878 } 8879 8880 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8881 hci_stack->gap_pairing_state = state; 8882 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8883 hci_run(); 8884 return 0; 8885 } 8886 8887 /** 8888 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8889 * @param addr 8890 * @param pin_data 8891 * @param pin_len 8892 * @return 0 if ok 8893 */ 8894 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8895 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8896 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8897 hci_stack->gap_pairing_pin_len = pin_len; 8898 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8899 } 8900 8901 /** 8902 * @brief Legacy Pairing Pin Code Response 8903 * @param addr 8904 * @param pin 8905 * @return 0 if ok 8906 */ 8907 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8908 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8909 } 8910 8911 /** 8912 * @brief Abort Legacy Pairing 8913 * @param addr 8914 * @param pin 8915 * @return 0 if ok 8916 */ 8917 int gap_pin_code_negative(bd_addr_t addr){ 8918 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8919 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8920 } 8921 8922 /** 8923 * @brief SSP Passkey Response 8924 * @param addr 8925 * @param passkey 8926 * @return 0 if ok 8927 */ 8928 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8929 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8930 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8931 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8932 } 8933 8934 /** 8935 * @brief Abort SSP Passkey Entry/Pairing 8936 * @param addr 8937 * @param pin 8938 * @return 0 if ok 8939 */ 8940 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8941 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8942 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8943 } 8944 8945 /** 8946 * @brief Accept SSP Numeric Comparison 8947 * @param addr 8948 * @param passkey 8949 * @return 0 if ok 8950 */ 8951 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8952 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8953 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8954 } 8955 8956 /** 8957 * @brief Abort SSP Numeric Comparison/Pairing 8958 * @param addr 8959 * @param pin 8960 * @return 0 if ok 8961 */ 8962 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8963 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8964 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8965 } 8966 8967 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8968 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8969 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8970 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8971 connectionSetAuthenticationFlags(conn, flag); 8972 hci_run(); 8973 return ERROR_CODE_SUCCESS; 8974 } 8975 #endif 8976 8977 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8978 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8979 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8980 } 8981 8982 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8983 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8984 } 8985 #endif 8986 8987 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8988 /** 8989 * @brief Report Remote OOB Data 8990 * @param bd_addr 8991 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8992 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8993 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8994 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8995 */ 8996 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){ 8997 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8998 if (connection == NULL) { 8999 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9000 } 9001 connection->classic_oob_c_192 = c_192; 9002 connection->classic_oob_r_192 = r_192; 9003 9004 // ignore P-256 if not supported by us 9005 if (hci_stack->secure_connections_active){ 9006 connection->classic_oob_c_256 = c_256; 9007 connection->classic_oob_r_256 = r_256; 9008 } 9009 9010 return ERROR_CODE_SUCCESS; 9011 } 9012 /** 9013 * @brief Generate new OOB data 9014 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9015 */ 9016 void gap_ssp_generate_oob_data(void){ 9017 hci_stack->classic_read_local_oob_data = true; 9018 hci_run(); 9019 } 9020 9021 #endif 9022 9023 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9024 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9025 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9026 if (connection == NULL) { 9027 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9028 } 9029 9030 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9031 connection->link_key_type = type; 9032 9033 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9034 } 9035 9036 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9037 /** 9038 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9039 * @param inquiry_mode see bluetooth_defines.h 9040 */ 9041 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9042 hci_stack->inquiry_mode = inquiry_mode; 9043 } 9044 9045 /** 9046 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9047 */ 9048 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9049 hci_stack->sco_voice_setting = voice_setting; 9050 } 9051 9052 /** 9053 * @brief Get SCO Voice Setting 9054 * @return current voice setting 9055 */ 9056 uint16_t hci_get_sco_voice_setting(void){ 9057 return hci_stack->sco_voice_setting; 9058 } 9059 9060 static int hci_have_usb_transport(void){ 9061 if (!hci_stack->hci_transport) return 0; 9062 const char * transport_name = hci_stack->hci_transport->name; 9063 if (!transport_name) return 0; 9064 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9065 } 9066 9067 /** @brief Get SCO packet length for current SCO Voice setting 9068 * @note Using SCO packets of the exact length is required for USB transfer 9069 * @return Length of SCO packets in bytes (not audio frames) 9070 */ 9071 uint16_t hci_get_sco_packet_length(void){ 9072 uint16_t sco_packet_length = 0; 9073 9074 #ifdef ENABLE_SCO_OVER_HCI 9075 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9076 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9077 9078 if (hci_have_usb_transport()){ 9079 // see Core Spec for H2 USB Transfer. 9080 // 3 byte SCO header + 24 bytes per connection 9081 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 9082 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 9083 } else { 9084 // 3 byte SCO header + SCO packet size over the air (60 bytes) 9085 sco_packet_length = 3 + 60 * multiplier; 9086 // assert that it still fits inside an SCO buffer 9087 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9088 sco_packet_length = 3 + 60; 9089 } 9090 } 9091 #endif 9092 9093 #ifdef HAVE_SCO_TRANSPORT 9094 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9095 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9096 sco_packet_length = 3 + 60 * multiplier; 9097 #endif 9098 return sco_packet_length; 9099 } 9100 9101 /** 9102 * @brief Sets the master/slave policy 9103 * @param policy (0: attempt to become master, 1: let connecting device decide) 9104 */ 9105 void hci_set_master_slave_policy(uint8_t policy){ 9106 hci_stack->master_slave_policy = policy; 9107 } 9108 9109 #endif 9110 9111 HCI_STATE hci_get_state(void){ 9112 return hci_stack->state; 9113 } 9114 9115 #ifdef ENABLE_CLASSIC 9116 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9117 hci_stack->gap_classic_accept_callback = accept_callback; 9118 } 9119 #endif 9120 9121 /** 9122 * @brief Set callback for Bluetooth Hardware Error 9123 */ 9124 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9125 hci_stack->hardware_error_callback = fn; 9126 } 9127 9128 void hci_disconnect_all(void){ 9129 btstack_linked_list_iterator_t it; 9130 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9131 while (btstack_linked_list_iterator_has_next(&it)){ 9132 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9133 if (con->state == SENT_DISCONNECT) continue; 9134 con->state = SEND_DISCONNECT; 9135 } 9136 hci_run(); 9137 } 9138 9139 uint16_t hci_get_manufacturer(void){ 9140 return hci_stack->manufacturer; 9141 } 9142 9143 #ifdef ENABLE_BLE 9144 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9145 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9146 if (!hci_con) return NULL; 9147 return &hci_con->sm_connection; 9148 } 9149 9150 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9151 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9152 #endif 9153 9154 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9155 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9156 if (hci_connection == NULL) return 0; 9157 if (hci_is_le_connection(hci_connection)){ 9158 #ifdef ENABLE_BLE 9159 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9160 if (sm_conn->sm_connection_encrypted) { 9161 return sm_conn->sm_actual_encryption_key_size; 9162 } 9163 #endif 9164 } else { 9165 #ifdef ENABLE_CLASSIC 9166 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9167 return hci_connection->encryption_key_size; 9168 } 9169 #endif 9170 } 9171 return 0; 9172 } 9173 9174 bool gap_authenticated(hci_con_handle_t con_handle){ 9175 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9176 if (hci_connection == NULL) return false; 9177 9178 switch (hci_connection->address_type){ 9179 #ifdef ENABLE_BLE 9180 case BD_ADDR_TYPE_LE_PUBLIC: 9181 case BD_ADDR_TYPE_LE_RANDOM: 9182 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9183 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9184 #endif 9185 #ifdef ENABLE_CLASSIC 9186 case BD_ADDR_TYPE_SCO: 9187 case BD_ADDR_TYPE_ACL: 9188 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9189 #endif 9190 default: 9191 return false; 9192 } 9193 } 9194 9195 bool gap_secure_connection(hci_con_handle_t con_handle){ 9196 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9197 if (hci_connection == NULL) return 0; 9198 9199 switch (hci_connection->address_type){ 9200 #ifdef ENABLE_BLE 9201 case BD_ADDR_TYPE_LE_PUBLIC: 9202 case BD_ADDR_TYPE_LE_RANDOM: 9203 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9204 return hci_connection->sm_connection.sm_connection_sc != 0; 9205 #endif 9206 #ifdef ENABLE_CLASSIC 9207 case BD_ADDR_TYPE_SCO: 9208 case BD_ADDR_TYPE_ACL: 9209 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9210 #endif 9211 default: 9212 return false; 9213 } 9214 } 9215 9216 bool gap_bonded(hci_con_handle_t con_handle){ 9217 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9218 if (hci_connection == NULL) return 0; 9219 9220 #ifdef ENABLE_CLASSIC 9221 link_key_t link_key; 9222 link_key_type_t link_key_type; 9223 #endif 9224 switch (hci_connection->address_type){ 9225 #ifdef ENABLE_BLE 9226 case BD_ADDR_TYPE_LE_PUBLIC: 9227 case BD_ADDR_TYPE_LE_RANDOM: 9228 return hci_connection->sm_connection.sm_le_db_index >= 0; 9229 #endif 9230 #ifdef ENABLE_CLASSIC 9231 case BD_ADDR_TYPE_SCO: 9232 case BD_ADDR_TYPE_ACL: 9233 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9234 #endif 9235 default: 9236 return false; 9237 } 9238 } 9239 9240 #ifdef ENABLE_BLE 9241 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9242 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9243 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9244 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9245 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9246 return sm_conn->sm_connection_authorization_state; 9247 } 9248 #endif 9249 9250 #ifdef ENABLE_CLASSIC 9251 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){ 9252 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9253 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9254 conn->sniff_min_interval = sniff_min_interval; 9255 conn->sniff_max_interval = sniff_max_interval; 9256 conn->sniff_attempt = sniff_attempt; 9257 conn->sniff_timeout = sniff_timeout; 9258 hci_run(); 9259 return 0; 9260 } 9261 9262 /** 9263 * @brief Exit Sniff mode 9264 * @param con_handle 9265 @ @return 0 if ok 9266 */ 9267 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9268 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9269 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9270 conn->sniff_min_interval = 0xffff; 9271 hci_run(); 9272 return 0; 9273 } 9274 9275 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){ 9276 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9277 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9278 conn->sniff_subrating_max_latency = max_latency; 9279 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9280 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9281 hci_run(); 9282 return ERROR_CODE_SUCCESS; 9283 } 9284 9285 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){ 9286 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9287 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9288 conn->qos_service_type = service_type; 9289 conn->qos_token_rate = token_rate; 9290 conn->qos_peak_bandwidth = peak_bandwidth; 9291 conn->qos_latency = latency; 9292 conn->qos_delay_variation = delay_variation; 9293 hci_run(); 9294 return ERROR_CODE_SUCCESS; 9295 } 9296 9297 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9298 hci_stack->new_page_scan_interval = page_scan_interval; 9299 hci_stack->new_page_scan_window = page_scan_window; 9300 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9301 hci_run(); 9302 } 9303 9304 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9305 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9306 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9307 hci_run(); 9308 } 9309 9310 void gap_set_page_timeout(uint16_t page_timeout){ 9311 hci_stack->page_timeout = page_timeout; 9312 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9313 hci_run(); 9314 } 9315 9316 #endif 9317 9318 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9319 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9320 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9321 if (le_device_db_index >= le_device_db_max_count()) return; 9322 uint8_t offset = le_device_db_index >> 3; 9323 uint8_t mask = 1 << (le_device_db_index & 7); 9324 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9325 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9326 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9327 // note: go back to remove entries, otherwise, a remove + add will skip the add 9328 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9329 } 9330 } 9331 9332 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9333 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9334 if (le_device_db_index >= le_device_db_max_count()) return; 9335 uint8_t offset = le_device_db_index >> 3; 9336 uint8_t mask = 1 << (le_device_db_index & 7); 9337 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9338 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9339 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9340 } 9341 } 9342 9343 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9344 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9345 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9346 } 9347 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9348 // restart le resolving list update 9349 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9350 } 9351 return ERROR_CODE_SUCCESS; 9352 } 9353 9354 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9355 hci_stack->le_privacy_mode = privacy_mode; 9356 } 9357 #endif 9358 9359 #ifdef ENABLE_BLE 9360 #ifdef ENABLE_LE_CENTRAL 9361 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9362 9363 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9364 // check if already in list 9365 btstack_linked_list_iterator_t it; 9366 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9367 while (btstack_linked_list_iterator_has_next(&it)) { 9368 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9369 if (entry->sid != advertising_sid) { 9370 continue; 9371 } 9372 if (entry->address_type != address_type) { 9373 continue; 9374 } 9375 if (memcmp(entry->address, address, 6) != 0) { 9376 continue; 9377 } 9378 // disallow if already scheduled to add 9379 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9380 return ERROR_CODE_COMMAND_DISALLOWED; 9381 } 9382 // still on controller, but scheduled to remove -> re-add 9383 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9384 return ERROR_CODE_SUCCESS; 9385 } 9386 // alloc and add to list 9387 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9388 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9389 entry->sid = advertising_sid; 9390 entry->address_type = address_type; 9391 (void)memcpy(entry->address, address, 6); 9392 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9393 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9394 return ERROR_CODE_SUCCESS; 9395 } 9396 9397 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9398 btstack_linked_list_iterator_t it; 9399 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9400 while (btstack_linked_list_iterator_has_next(&it)){ 9401 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9402 if (entry->sid != advertising_sid) { 9403 continue; 9404 } 9405 if (entry->address_type != address_type) { 9406 continue; 9407 } 9408 if (memcmp(entry->address, address, 6) != 0) { 9409 continue; 9410 } 9411 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9412 // remove from controller if already present 9413 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9414 } else { 9415 // directly remove entry from whitelist 9416 btstack_linked_list_iterator_remove(&it); 9417 btstack_memory_periodic_advertiser_list_entry_free(entry); 9418 } 9419 return ERROR_CODE_SUCCESS; 9420 } 9421 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9422 } 9423 9424 static void hci_periodic_advertiser_list_clear(void){ 9425 btstack_linked_list_iterator_t it; 9426 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9427 while (btstack_linked_list_iterator_has_next(&it)){ 9428 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9429 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9430 // remove from controller if already present 9431 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9432 continue; 9433 } 9434 // directly remove entry from whitelist 9435 btstack_linked_list_iterator_remove(&it); 9436 btstack_memory_periodic_advertiser_list_entry_free(entry); 9437 } 9438 } 9439 9440 uint8_t gap_periodic_advertiser_list_clear(void){ 9441 hci_periodic_advertiser_list_clear(); 9442 hci_run(); 9443 return ERROR_CODE_SUCCESS; 9444 } 9445 9446 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9447 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9448 if (status){ 9449 return status; 9450 } 9451 hci_run(); 9452 return ERROR_CODE_SUCCESS; 9453 } 9454 9455 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9456 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9457 if (status){ 9458 return status; 9459 } 9460 hci_run(); 9461 return ERROR_CODE_SUCCESS; 9462 } 9463 9464 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9465 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9466 // abort if already active 9467 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9468 return ERROR_CODE_COMMAND_DISALLOWED; 9469 } 9470 // store request 9471 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9472 hci_stack->le_periodic_sync_options = options; 9473 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9474 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9475 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9476 hci_stack->le_periodic_sync_skip = skip; 9477 hci_stack->le_periodic_sync_timeout = sync_timeout; 9478 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9479 9480 hci_run(); 9481 return ERROR_CODE_SUCCESS; 9482 } 9483 9484 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9485 // abort if not requested 9486 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9487 return ERROR_CODE_COMMAND_DISALLOWED; 9488 } 9489 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9490 hci_run(); 9491 return ERROR_CODE_SUCCESS; 9492 } 9493 9494 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9495 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9496 return ERROR_CODE_COMMAND_DISALLOWED; 9497 } 9498 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9499 hci_run(); 9500 return ERROR_CODE_SUCCESS; 9501 } 9502 9503 #endif 9504 #endif 9505 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9506 static hci_iso_stream_t * 9507 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9508 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9509 if (iso_stream != NULL){ 9510 iso_stream->iso_type = iso_type; 9511 iso_stream->state = state; 9512 iso_stream->group_id = group_id; 9513 iso_stream->stream_id = stream_id; 9514 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9515 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9516 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9517 } 9518 return iso_stream; 9519 } 9520 9521 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9522 btstack_linked_list_iterator_t it; 9523 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9524 while (btstack_linked_list_iterator_has_next(&it)){ 9525 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9526 if (iso_stream->cis_handle == con_handle ) { 9527 return iso_stream; 9528 } 9529 } 9530 return NULL; 9531 } 9532 9533 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9534 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9535 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9536 btstack_memory_hci_iso_stream_free(iso_stream); 9537 } 9538 9539 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9540 btstack_linked_list_iterator_t it; 9541 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9542 while (btstack_linked_list_iterator_has_next(&it)){ 9543 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9544 if ((iso_stream->group_id == group_id) && 9545 (iso_stream->iso_type == iso_type)){ 9546 btstack_linked_list_iterator_remove(&it); 9547 btstack_memory_hci_iso_stream_free(iso_stream); 9548 } 9549 } 9550 } 9551 9552 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9553 btstack_linked_list_iterator_t it; 9554 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9555 while (btstack_linked_list_iterator_has_next(&it)){ 9556 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9557 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9558 (iso_stream->group_id == group_id)){ 9559 btstack_linked_list_iterator_remove(&it); 9560 btstack_memory_hci_iso_stream_free(iso_stream); 9561 } 9562 } 9563 } 9564 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9565 btstack_linked_list_iterator_t it; 9566 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9567 while (btstack_linked_list_iterator_has_next(&it)){ 9568 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9569 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9570 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9571 } 9572 } 9573 } 9574 9575 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9576 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9577 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9578 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9579 return (sdu_len_offset + 2 + sdu_len) == size; 9580 } 9581 9582 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9583 if (hci_stack->iso_packet_handler == NULL) { 9584 return; 9585 } 9586 if (size < 4) { 9587 return; 9588 } 9589 9590 // parse header 9591 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9592 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9593 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9594 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9595 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9596 9597 // assert packet is complete 9598 if ((iso_data_len + 4u) != size){ 9599 return; 9600 } 9601 9602 if ((pb_flag & 0x01) == 0){ 9603 if (pb_flag == 0x02){ 9604 // The ISO_Data_Load field contains a header and a complete SDU. 9605 if (hci_iso_sdu_complete(packet, size)) { 9606 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9607 } 9608 } else { 9609 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9610 if (iso_stream == NULL){ 9611 return; 9612 } 9613 if (size > HCI_ISO_PAYLOAD_SIZE){ 9614 return; 9615 } 9616 memcpy(iso_stream->reassembly_buffer, packet, size); 9617 // fix pb_flag 9618 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9619 iso_stream->reassembly_pos = size; 9620 } 9621 } else { 9622 // iso_data_load contains continuation or last fragment of an SDU 9623 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9624 if (ts_flag != 0){ 9625 return; 9626 } 9627 // append fragment 9628 if (iso_stream == NULL){ 9629 return; 9630 } 9631 if (iso_stream->reassembly_pos == 0){ 9632 return; 9633 } 9634 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9635 // reset reassembly buffer 9636 iso_stream->reassembly_pos = 0; 9637 return; 9638 } 9639 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9640 iso_stream->reassembly_pos += iso_data_len; 9641 9642 // deliver if last fragment and SDU complete 9643 if (pb_flag == 0x03){ 9644 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9645 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9646 } 9647 iso_stream->reassembly_pos = 0; 9648 } 9649 } 9650 } 9651 9652 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9653 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9654 uint16_t pos = 0; 9655 event[pos++] = HCI_EVENT_META_GAP; 9656 event[pos++] = 4 + (2 * big->num_bis); 9657 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9658 event[pos++] = status; 9659 event[pos++] = big->big_handle; 9660 event[pos++] = big->num_bis; 9661 uint8_t i; 9662 for (i=0;i<big->num_bis;i++){ 9663 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9664 pos += 2; 9665 } 9666 hci_emit_event(event, pos, 0); 9667 } 9668 9669 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9670 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9671 uint16_t pos = 0; 9672 event[pos++] = HCI_EVENT_META_GAP; 9673 event[pos++] = 4 + (2 * cig->num_cis); 9674 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9675 event[pos++] = status; 9676 event[pos++] = cig->cig_id; 9677 event[pos++] = cig->num_cis; 9678 uint8_t i; 9679 for (i=0;i<cig->num_cis;i++){ 9680 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9681 pos += 2; 9682 } 9683 hci_emit_event(event, pos, 0); 9684 } 9685 9686 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9687 hci_con_handle_t acl_con_handle) { 9688 uint8_t event [10]; 9689 uint16_t pos = 0; 9690 event[pos++] = HCI_EVENT_META_GAP; 9691 event[pos++] = 8; 9692 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9693 event[pos++] = status; 9694 event[pos++] = cig_id; 9695 event[pos++] = cis_id; 9696 little_endian_store_16(event, pos, cis_con_handle); 9697 pos += 2; 9698 little_endian_store_16(event, pos, acl_con_handle); 9699 pos += 2; 9700 hci_emit_event(event, pos, 0); 9701 } 9702 9703 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9704 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9705 // cache data before finalizing struct 9706 uint8_t cig_id = iso_stream->group_id; 9707 uint8_t cis_id = iso_stream->stream_id; 9708 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9709 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9710 if (status != ERROR_CODE_SUCCESS){ 9711 hci_iso_stream_finalize(iso_stream); 9712 } 9713 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9714 } 9715 9716 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9717 uint8_t event [4]; 9718 uint16_t pos = 0; 9719 event[pos++] = HCI_EVENT_META_GAP; 9720 event[pos++] = 2; 9721 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9722 event[pos++] = big->big_handle; 9723 hci_emit_event(event, pos, 0); 9724 } 9725 9726 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9727 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9728 uint16_t pos = 0; 9729 event[pos++] = HCI_EVENT_META_GAP; 9730 event[pos++] = 4; 9731 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9732 event[pos++] = status; 9733 event[pos++] = big_sync->big_handle; 9734 event[pos++] = big_sync->num_bis; 9735 uint8_t i; 9736 for (i=0;i<big_sync->num_bis;i++){ 9737 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9738 pos += 2; 9739 } 9740 hci_emit_event(event, pos, 0); 9741 } 9742 9743 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9744 uint8_t event [4]; 9745 uint16_t pos = 0; 9746 event[pos++] = HCI_EVENT_META_GAP; 9747 event[pos++] = 2; 9748 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9749 event[pos++] = big_handle; 9750 hci_emit_event(event, pos, 0); 9751 } 9752 9753 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9754 uint8_t event[6]; 9755 uint16_t pos = 0; 9756 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9757 event[pos++] = sizeof(event) - 2; 9758 event[pos++] = big->big_handle; 9759 event[pos++] = bis_index; 9760 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9761 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9762 } 9763 9764 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9765 uint8_t event[4]; 9766 uint16_t pos = 0; 9767 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9768 event[pos++] = sizeof(event) - 2; 9769 little_endian_store_16(event, pos, cis_con_handle); 9770 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9771 } 9772 9773 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9774 btstack_linked_list_iterator_t it; 9775 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9776 while (btstack_linked_list_iterator_has_next(&it)){ 9777 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9778 if ( big->big_handle == big_handle ) { 9779 return big; 9780 } 9781 } 9782 return NULL; 9783 } 9784 9785 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9786 btstack_linked_list_iterator_t it; 9787 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9788 while (btstack_linked_list_iterator_has_next(&it)){ 9789 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9790 if ( big_sync->big_handle == big_handle ) { 9791 return big_sync; 9792 } 9793 } 9794 return NULL; 9795 } 9796 9797 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9798 hci_stack->iso_packets_to_queue = num_packets; 9799 } 9800 9801 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9802 btstack_linked_list_iterator_t it; 9803 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9804 while (btstack_linked_list_iterator_has_next(&it)){ 9805 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9806 if ( cig->cig_id == cig_id ) { 9807 return cig; 9808 } 9809 } 9810 return NULL; 9811 } 9812 9813 static void hci_iso_notify_can_send_now(void){ 9814 9815 // BIG 9816 9817 btstack_linked_list_iterator_t it; 9818 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9819 while (btstack_linked_list_iterator_has_next(&it)){ 9820 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9821 // track number completed packet timestamps 9822 if (big->num_completed_timestamp_current_valid){ 9823 big->num_completed_timestamp_current_valid = false; 9824 if (big->num_completed_timestamp_previous_valid){ 9825 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9826 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9827 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9828 big->num_completed_timestamp_previous_ms); 9829 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9830 // to catch up, skip packet on all BIS 9831 uint8_t i; 9832 for (i=0;i<big->num_bis;i++){ 9833 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9834 if (iso_stream){ 9835 iso_stream->num_packets_to_skip++; 9836 } 9837 } 9838 } 9839 } 9840 big->num_completed_timestamp_previous_valid = true; 9841 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9842 } 9843 9844 if (big->can_send_now_requested){ 9845 // check if no outgoing iso packets pending and no can send now have to be emitted 9846 uint8_t i; 9847 bool can_send = true; 9848 uint8_t num_iso_queued_minimum = 0; 9849 for (i=0;i<big->num_bis;i++){ 9850 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9851 if (iso_stream == NULL) continue; 9852 // handle case where individual ISO packet was sent too late: 9853 // for each additionally queued packet, a new one needs to get skipped 9854 if (i==0){ 9855 num_iso_queued_minimum = iso_stream->num_packets_sent; 9856 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9857 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9858 iso_stream->num_packets_to_skip += num_packets_to_skip; 9859 iso_stream->num_packets_sent -= num_packets_to_skip; 9860 } 9861 // check if we can send now 9862 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9863 can_send = false; 9864 break; 9865 } 9866 } 9867 if (can_send){ 9868 // propagate can send now to individual streams 9869 big->can_send_now_requested = false; 9870 for (i=0;i<big->num_bis;i++){ 9871 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9872 iso_stream->emit_ready_to_send = true; 9873 } 9874 } 9875 } 9876 } 9877 9878 if (hci_stack->hci_packet_buffer_reserved) return; 9879 9880 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9881 while (btstack_linked_list_iterator_has_next(&it)){ 9882 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9883 // report bis ready 9884 uint8_t i; 9885 for (i=0;i<big->num_bis;i++){ 9886 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9887 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9888 iso_stream->emit_ready_to_send = false; 9889 hci_emit_bis_can_send_now(big, i); 9890 break; 9891 } 9892 } 9893 } 9894 9895 // CIS 9896 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9897 while (btstack_linked_list_iterator_has_next(&it)) { 9898 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9899 if ((iso_stream->can_send_now_requested) && 9900 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9901 iso_stream->can_send_now_requested = false; 9902 hci_emit_cis_can_send_now(iso_stream->cis_handle); 9903 } 9904 } 9905 } 9906 9907 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9908 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9909 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9910 } 9911 if (big_params->num_bis == 0){ 9912 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9913 } 9914 if (big_params->num_bis > MAX_NR_BIS){ 9915 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9916 } 9917 9918 // reserve ISO Streams 9919 uint8_t i; 9920 uint8_t status = ERROR_CODE_SUCCESS; 9921 for (i=0;i<big_params->num_bis;i++){ 9922 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 9923 if (iso_stream == NULL) { 9924 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9925 break; 9926 } 9927 } 9928 9929 // free structs on error 9930 if (status != ERROR_CODE_SUCCESS){ 9931 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9932 return status; 9933 } 9934 9935 le_audio_big_t * big = storage; 9936 big->big_handle = big_params->big_handle; 9937 big->params = big_params; 9938 big->state = LE_AUDIO_BIG_STATE_CREATE; 9939 big->num_bis = big_params->num_bis; 9940 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9941 9942 hci_run(); 9943 9944 return ERROR_CODE_SUCCESS; 9945 } 9946 9947 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9948 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9949 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9950 } 9951 if (big_sync_params->num_bis == 0){ 9952 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9953 } 9954 if (big_sync_params->num_bis > MAX_NR_BIS){ 9955 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9956 } 9957 9958 le_audio_big_sync_t * big_sync = storage; 9959 big_sync->big_handle = big_sync_params->big_handle; 9960 big_sync->params = big_sync_params; 9961 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9962 big_sync->num_bis = big_sync_params->num_bis; 9963 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9964 9965 hci_run(); 9966 9967 return ERROR_CODE_SUCCESS; 9968 } 9969 9970 uint8_t gap_big_terminate(uint8_t big_handle){ 9971 le_audio_big_t * big = hci_big_for_handle(big_handle); 9972 if (big == NULL){ 9973 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9974 } 9975 switch (big->state){ 9976 case LE_AUDIO_BIG_STATE_CREATE: 9977 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9978 hci_emit_big_terminated(big); 9979 break; 9980 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9981 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9982 break; 9983 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9984 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9985 case LE_AUDIO_BIG_STATE_ACTIVE: 9986 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9987 hci_run(); 9988 break; 9989 default: 9990 return ERROR_CODE_COMMAND_DISALLOWED; 9991 } 9992 return ERROR_CODE_SUCCESS; 9993 } 9994 9995 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9996 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9997 if (big_sync == NULL){ 9998 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9999 } 10000 switch (big_sync->state){ 10001 case LE_AUDIO_BIG_STATE_CREATE: 10002 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10003 hci_emit_big_sync_stopped(big_handle); 10004 break; 10005 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10006 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10007 break; 10008 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10009 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10010 case LE_AUDIO_BIG_STATE_ACTIVE: 10011 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10012 hci_run(); 10013 break; 10014 default: 10015 return ERROR_CODE_COMMAND_DISALLOWED; 10016 } 10017 return ERROR_CODE_SUCCESS; 10018 } 10019 10020 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10021 le_audio_big_t * big = hci_big_for_handle(big_handle); 10022 if (big == NULL){ 10023 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10024 } 10025 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10026 return ERROR_CODE_COMMAND_DISALLOWED; 10027 } 10028 big->can_send_now_requested = true; 10029 hci_iso_notify_can_send_now(); 10030 return ERROR_CODE_SUCCESS; 10031 } 10032 10033 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10034 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10035 if (iso_stream == NULL){ 10036 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10037 } 10038 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10039 return ERROR_CODE_COMMAND_DISALLOWED; 10040 } 10041 iso_stream->can_send_now_requested = true; 10042 hci_iso_notify_can_send_now(); 10043 return ERROR_CODE_SUCCESS; 10044 } 10045 10046 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10047 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10048 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10049 } 10050 if (cig_params->num_cis == 0){ 10051 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10052 } 10053 if (cig_params->num_cis > MAX_NR_BIS){ 10054 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10055 } 10056 10057 // reserve ISO Streams 10058 uint8_t i; 10059 uint8_t status = ERROR_CODE_SUCCESS; 10060 for (i=0;i<cig_params->num_cis;i++){ 10061 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10062 if (iso_stream == NULL) { 10063 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10064 break; 10065 } 10066 } 10067 10068 // free structs on error 10069 if (status != ERROR_CODE_SUCCESS){ 10070 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10071 return status; 10072 } 10073 10074 le_audio_cig_t * cig = storage; 10075 cig->cig_id = cig_params->cig_id; 10076 cig->num_cis = cig_params->num_cis; 10077 cig->params = cig_params; 10078 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10079 for (i=0;i<cig->num_cis;i++){ 10080 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10081 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10082 cig->cis_setup_active[i] = false; 10083 cig->cis_established[i] = false; 10084 } 10085 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10086 10087 hci_run(); 10088 10089 return ERROR_CODE_SUCCESS; 10090 } 10091 10092 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10093 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10094 if (cig == NULL){ 10095 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10096 } 10097 10098 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10099 return ERROR_CODE_COMMAND_DISALLOWED; 10100 } 10101 10102 // store ACL Connection Handles 10103 uint8_t i; 10104 for (i=0;i<cig->num_cis;i++){ 10105 // check that all con handles exist and store 10106 hci_con_handle_t cis_handle = cis_con_handles[i]; 10107 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10108 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10109 } 10110 uint8_t j; 10111 bool found = false; 10112 for (j=0;j<cig->num_cis;j++){ 10113 if (cig->cis_con_handles[j] == cis_handle){ 10114 cig->acl_con_handles[j] = acl_con_handles[j]; 10115 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10116 btstack_assert(iso_stream != NULL); 10117 iso_stream->acl_handle = acl_con_handles[j]; 10118 found = true; 10119 break; 10120 } 10121 } 10122 if (!found){ 10123 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10124 } 10125 } 10126 10127 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10128 hci_run(); 10129 10130 return ERROR_CODE_SUCCESS; 10131 } 10132 10133 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10134 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10135 if (iso_stream == NULL){ 10136 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10137 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10138 } 10139 10140 // set next state and continue 10141 iso_stream->state = state; 10142 hci_run(); 10143 return ERROR_CODE_SUCCESS; 10144 } 10145 10146 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10147 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10148 } 10149 10150 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10151 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10152 } 10153 10154 10155 #endif 10156 #endif /* ENABLE_BLE */ 10157 10158 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10159 void hci_setup_test_connections_fuzz(void){ 10160 hci_connection_t * conn; 10161 10162 // default address: 66:55:44:33:00:01 10163 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10164 10165 // setup Controller info 10166 hci_stack->num_cmd_packets = 255; 10167 hci_stack->acl_packets_total_num = 255; 10168 10169 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10170 addr[5] = 0x01; 10171 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10172 conn->con_handle = addr[5]; 10173 conn->role = HCI_ROLE_SLAVE; 10174 conn->state = RECEIVED_CONNECTION_REQUEST; 10175 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10176 10177 // setup incoming Classic SCO connection with con handle 0x0002 10178 addr[5] = 0x02; 10179 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10180 conn->con_handle = addr[5]; 10181 conn->role = HCI_ROLE_SLAVE; 10182 conn->state = RECEIVED_CONNECTION_REQUEST; 10183 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10184 10185 // setup ready Classic ACL connection with con handle 0x0003 10186 addr[5] = 0x03; 10187 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10188 conn->con_handle = addr[5]; 10189 conn->role = HCI_ROLE_SLAVE; 10190 conn->state = OPEN; 10191 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10192 10193 // setup ready Classic SCO connection with con handle 0x0004 10194 addr[5] = 0x04; 10195 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10196 conn->con_handle = addr[5]; 10197 conn->role = HCI_ROLE_SLAVE; 10198 conn->state = OPEN; 10199 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10200 10201 // setup ready LE ACL connection with con handle 0x005 and public address 10202 addr[5] = 0x05; 10203 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 10204 conn->con_handle = addr[5]; 10205 conn->role = HCI_ROLE_SLAVE; 10206 conn->state = OPEN; 10207 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10208 conn->sm_connection.sm_connection_encrypted = 1; 10209 } 10210 10211 void hci_free_connections_fuzz(void){ 10212 btstack_linked_list_iterator_t it; 10213 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10214 while (btstack_linked_list_iterator_has_next(&it)){ 10215 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10216 btstack_linked_list_iterator_remove(&it); 10217 btstack_memory_hci_connection_free(con); 10218 } 10219 } 10220 void hci_simulate_working_fuzz(void){ 10221 hci_stack->le_scanning_param_update = false; 10222 hci_init_done(); 10223 hci_stack->num_cmd_packets = 255; 10224 } 10225 #endif 10226