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