1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static bool hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 247 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 248 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 249 static void hci_iso_notify_can_send_now(void); 250 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 251 static void hci_emit_big_terminated(const le_audio_big_t * big); 252 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 253 static void hci_emit_big_sync_stopped(uint8_t big_handle); 254 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 255 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 258 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 259 #endif /* ENABLE_BLE */ 260 261 // the STACK is here 262 #ifndef HAVE_MALLOC 263 static hci_stack_t hci_stack_static; 264 #endif 265 static hci_stack_t * hci_stack = NULL; 266 267 #ifdef ENABLE_CLASSIC 268 // default name 269 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 270 271 // test helper 272 static uint8_t disable_l2cap_timeouts = 0; 273 #endif 274 275 // reset connection state on create and on reconnect 276 // don't overwrite addr, con handle, role 277 static void hci_connection_init(hci_connection_t * conn){ 278 conn->authentication_flags = AUTH_FLAG_NONE; 279 conn->bonding_flags = 0; 280 conn->requested_security_level = LEVEL_0; 281 #ifdef ENABLE_CLASSIC 282 conn->request_role = HCI_ROLE_INVALID; 283 conn->sniff_subrating_max_latency = 0xffff; 284 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 285 conn->link_key_type = INVALID_LINK_KEY; 286 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 287 btstack_run_loop_set_timer_context(&conn->timeout, conn); 288 hci_connection_timestamp(conn); 289 #endif 290 conn->acl_recombination_length = 0; 291 conn->acl_recombination_pos = 0; 292 conn->num_packets_sent = 0; 293 294 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 295 #ifdef ENABLE_BLE 296 conn->le_phy_update_all_phys = 0xff; 297 #endif 298 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 299 conn->le_max_tx_octets = 27; 300 #endif 301 #ifdef ENABLE_CLASSIC_PAIRING_OOB 302 conn->classic_oob_c_192 = NULL; 303 conn->classic_oob_r_192 = NULL; 304 conn->classic_oob_c_256 = NULL; 305 conn->classic_oob_r_256 = NULL; 306 #endif 307 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 308 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 309 conn->le_past_advertising_handle = 0xff; 310 #endif 311 } 312 313 /** 314 * create connection for given address 315 * 316 * @return connection OR NULL, if no memory left 317 */ 318 static hci_connection_t * 319 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 320 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 321 322 hci_connection_t * conn = btstack_memory_hci_connection_get(); 323 if (!conn) return NULL; 324 hci_connection_init(conn); 325 326 bd_addr_copy(conn->address, addr); 327 conn->address_type = addr_type; 328 conn->con_handle = HCI_CON_HANDLE_INVALID; 329 conn->role = role; 330 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 331 332 return conn; 333 } 334 335 336 /** 337 * get le connection parameter range 338 * 339 * @return le connection parameter range struct 340 */ 341 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 342 *range = hci_stack->le_connection_parameter_range; 343 } 344 345 /** 346 * set le connection parameter range 347 * 348 */ 349 350 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 351 hci_stack->le_connection_parameter_range = *range; 352 } 353 354 /** 355 * @brief Test if connection parameters are inside in existing rage 356 * @param conn_interval_min (unit: 1.25ms) 357 * @param conn_interval_max (unit: 1.25ms) 358 * @param conn_latency 359 * @param supervision_timeout (unit: 10ms) 360 * @return 1 if included 361 */ 362 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 363 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 364 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 365 366 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 367 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 368 369 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 370 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 371 372 return 1; 373 } 374 375 /** 376 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 377 * @note: default: 1 378 * @param max_peripheral_connections 379 */ 380 #ifdef ENABLE_LE_PERIPHERAL 381 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 382 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 383 } 384 #endif 385 386 /** 387 * get hci connections iterator 388 * 389 * @return hci connections iterator 390 */ 391 392 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 393 btstack_linked_list_iterator_init(it, &hci_stack->connections); 394 } 395 396 /** 397 * get connection for a given handle 398 * 399 * @return connection OR NULL, if not found 400 */ 401 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 402 btstack_linked_list_iterator_t it; 403 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 404 while (btstack_linked_list_iterator_has_next(&it)){ 405 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 406 if ( item->con_handle == con_handle ) { 407 return item; 408 } 409 } 410 return NULL; 411 } 412 413 /** 414 * get connection for given address 415 * 416 * @return connection OR NULL, if not found 417 */ 418 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 419 btstack_linked_list_iterator_t it; 420 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 421 while (btstack_linked_list_iterator_has_next(&it)){ 422 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 423 if (connection->address_type != addr_type) continue; 424 if (memcmp(addr, connection->address, 6) != 0) continue; 425 return connection; 426 } 427 return NULL; 428 } 429 430 #ifdef ENABLE_CLASSIC 431 432 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 433 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 434 } 435 436 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 437 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 438 } 439 440 #ifdef ENABLE_SCO_OVER_HCI 441 static int hci_number_sco_connections(void){ 442 int connections = 0; 443 btstack_linked_list_iterator_t it; 444 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 445 while (btstack_linked_list_iterator_has_next(&it)){ 446 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 447 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 448 connections++; 449 } 450 return connections; 451 } 452 #endif 453 454 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 455 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 456 #ifdef HAVE_EMBEDDED_TICK 457 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 458 // connections might be timed out 459 hci_emit_l2cap_check_timeout(connection); 460 } 461 #else 462 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 463 // connections might be timed out 464 hci_emit_l2cap_check_timeout(connection); 465 } 466 #endif 467 } 468 469 static void hci_connection_timestamp(hci_connection_t *connection){ 470 #ifdef HAVE_EMBEDDED_TICK 471 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 472 #else 473 connection->timestamp = btstack_run_loop_get_time_ms(); 474 #endif 475 } 476 477 /** 478 * add authentication flags and reset timer 479 * @note: assumes classic connection 480 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 481 */ 482 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 483 bd_addr_t addr; 484 reverse_bd_addr(bd_addr, addr); 485 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 486 if (conn) { 487 connectionSetAuthenticationFlags(conn, flags); 488 hci_connection_timestamp(conn); 489 } 490 } 491 492 static bool hci_pairing_active(hci_connection_t * hci_connection){ 493 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 494 } 495 496 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 497 if (hci_pairing_active(hci_connection)) return; 498 if (ssp){ 499 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 500 } else { 501 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 502 } 503 // if we are initiator, we have sent an HCI Authenticate Request 504 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 505 506 // if we are responder, use minimal service security level as required level 507 if (!initiator){ 508 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 509 } 510 511 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 512 513 uint8_t event[12]; 514 event[0] = GAP_EVENT_PAIRING_STARTED; 515 event[1] = 10; 516 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 517 reverse_bd_addr(hci_connection->address, &event[4]); 518 event[10] = (uint8_t) ssp; 519 event[11] = (uint8_t) initiator; 520 hci_emit_event(event, sizeof(event), 1); 521 } 522 523 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 524 hci_connection->requested_security_level = LEVEL_0; 525 if (!hci_pairing_active(hci_connection)) return; 526 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 527 #ifdef ENABLE_CLASSIC_PAIRING_OOB 528 hci_connection->classic_oob_c_192 = NULL; 529 hci_connection->classic_oob_r_192 = NULL; 530 hci_connection->classic_oob_c_256 = NULL; 531 hci_connection->classic_oob_r_256 = NULL; 532 #endif 533 log_info("pairing complete, status %02x", status); 534 535 uint8_t event[11]; 536 event[0] = GAP_EVENT_PAIRING_COMPLETE; 537 event[1] = 9; 538 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 539 reverse_bd_addr(hci_connection->address, &event[4]); 540 event[10] = status; 541 hci_emit_event(event, sizeof(event), 1); 542 543 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 544 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 545 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 546 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 547 hci_connection->bonding_status = status; 548 } 549 } 550 551 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 552 hci_connection_t * conn = hci_connection_for_handle(handle); 553 if (!conn) return false; 554 return hci_pairing_active(conn); 555 } 556 557 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 558 if (!hci_stack->link_key_db) return; 559 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 560 hci_stack->link_key_db->delete_link_key(addr); 561 } 562 563 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 564 if (!hci_stack->link_key_db) return; 565 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 566 hci_stack->link_key_db->put_link_key(addr, link_key, type); 567 } 568 569 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 570 if (!hci_stack->link_key_db) return false; 571 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 572 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 573 return result; 574 } 575 576 void gap_delete_all_link_keys(void){ 577 bd_addr_t addr; 578 link_key_t link_key; 579 link_key_type_t type; 580 btstack_link_key_iterator_t it; 581 int ok = gap_link_key_iterator_init(&it); 582 if (!ok) { 583 log_error("could not initialize iterator"); 584 return; 585 } 586 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 587 gap_drop_link_key_for_bd_addr(addr); 588 } 589 gap_link_key_iterator_done(&it); 590 } 591 592 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 593 if (!hci_stack->link_key_db) return 0; 594 if (!hci_stack->link_key_db->iterator_init) return 0; 595 return hci_stack->link_key_db->iterator_init(it); 596 } 597 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 598 if (!hci_stack->link_key_db) return 0; 599 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 600 } 601 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 602 if (!hci_stack->link_key_db) return; 603 hci_stack->link_key_db->iterator_done(it); 604 } 605 #endif 606 607 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 608 switch (address_type){ 609 case BD_ADDR_TYPE_LE_PUBLIC: 610 case BD_ADDR_TYPE_LE_RANDOM: 611 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 612 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 613 return true; 614 default: 615 return false; 616 } 617 } 618 619 static bool hci_is_le_connection(hci_connection_t * connection){ 620 return hci_is_le_connection_type(connection->address_type); 621 } 622 623 /** 624 * count connections 625 */ 626 static int nr_hci_connections(void){ 627 int count = 0; 628 btstack_linked_item_t *it; 629 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 630 count++; 631 } 632 return count; 633 } 634 635 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 636 637 unsigned int num_packets_sent_classic = 0; 638 unsigned int num_packets_sent_le = 0; 639 640 btstack_linked_item_t *it; 641 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 642 hci_connection_t * connection = (hci_connection_t *) it; 643 if (hci_is_le_connection(connection)){ 644 num_packets_sent_le += connection->num_packets_sent; 645 } 646 if (connection->address_type == BD_ADDR_TYPE_ACL){ 647 num_packets_sent_classic += connection->num_packets_sent; 648 } 649 } 650 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 651 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 652 int free_slots_le = 0; 653 654 if (free_slots_classic < 0){ 655 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 656 return 0; 657 } 658 659 if (hci_stack->le_acl_packets_total_num){ 660 // if we have LE slots, they are used 661 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 662 if (free_slots_le < 0){ 663 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 664 return 0; 665 } 666 } else { 667 // otherwise, classic slots are used for LE, too 668 free_slots_classic -= num_packets_sent_le; 669 if (free_slots_classic < 0){ 670 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 671 return 0; 672 } 673 } 674 675 switch (address_type){ 676 case BD_ADDR_TYPE_UNKNOWN: 677 log_error("hci_number_free_acl_slots: unknown address type"); 678 return 0; 679 680 case BD_ADDR_TYPE_ACL: 681 return (uint16_t) free_slots_classic; 682 683 default: 684 if (hci_stack->le_acl_packets_total_num > 0){ 685 return (uint16_t) free_slots_le; 686 } 687 return (uint16_t) free_slots_classic; 688 } 689 } 690 691 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 692 // get connection type 693 hci_connection_t * connection = hci_connection_for_handle(con_handle); 694 if (!connection){ 695 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 696 return 0; 697 } 698 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 699 } 700 701 #ifdef ENABLE_CLASSIC 702 static int hci_number_free_sco_slots(void){ 703 unsigned int num_sco_packets_sent = 0; 704 btstack_linked_item_t *it; 705 if (hci_stack->synchronous_flow_control_enabled){ 706 // explicit flow control 707 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 708 hci_connection_t * connection = (hci_connection_t *) it; 709 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 710 num_sco_packets_sent += connection->num_packets_sent; 711 } 712 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 713 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 714 return 0; 715 } 716 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 717 } else { 718 // implicit flow control 719 int num_ready = 0; 720 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 721 hci_connection_t * connection = (hci_connection_t *) it; 722 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 723 if (connection->sco_tx_ready == 0) continue; 724 num_ready++; 725 } 726 return num_ready; 727 } 728 } 729 #endif 730 731 // only used to send HCI Host Number Completed Packets 732 static int hci_can_send_comand_packet_transport(void){ 733 if (hci_stack->hci_packet_buffer_reserved) return 0; 734 735 // check for async hci transport implementations 736 if (hci_stack->hci_transport->can_send_packet_now){ 737 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 738 return 0; 739 } 740 } 741 return 1; 742 } 743 744 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 745 bool hci_can_send_command_packet_now(void){ 746 if (hci_can_send_comand_packet_transport() == 0) return false; 747 return hci_stack->num_cmd_packets > 0u; 748 } 749 750 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 751 // check for async hci transport implementations 752 if (!hci_stack->hci_transport->can_send_packet_now) return true; 753 return hci_stack->hci_transport->can_send_packet_now(packet_type); 754 } 755 756 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 757 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 758 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 759 } 760 761 bool hci_can_send_acl_le_packet_now(void){ 762 if (hci_stack->hci_packet_buffer_reserved) return false; 763 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 764 } 765 766 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 767 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 768 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 769 } 770 771 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 772 if (hci_stack->hci_packet_buffer_reserved) return false; 773 return hci_can_send_prepared_acl_packet_now(con_handle); 774 } 775 776 #ifdef ENABLE_CLASSIC 777 bool hci_can_send_acl_classic_packet_now(void){ 778 if (hci_stack->hci_packet_buffer_reserved) return false; 779 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 780 } 781 782 bool hci_can_send_prepared_sco_packet_now(void){ 783 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 784 if (hci_have_usb_transport()){ 785 return hci_stack->sco_can_send_now; 786 } else { 787 return hci_number_free_sco_slots() > 0; 788 } 789 } 790 791 bool hci_can_send_sco_packet_now(void){ 792 if (hci_stack->hci_packet_buffer_reserved) return false; 793 return hci_can_send_prepared_sco_packet_now(); 794 } 795 796 void hci_request_sco_can_send_now_event(void){ 797 hci_stack->sco_waiting_for_can_send_now = 1; 798 hci_notify_if_sco_can_send_now(); 799 } 800 #endif 801 802 // used for internal checks in l2cap.c 803 bool hci_is_packet_buffer_reserved(void){ 804 return hci_stack->hci_packet_buffer_reserved; 805 } 806 807 // reserves outgoing packet buffer. 808 // @return 1 if successful 809 bool hci_reserve_packet_buffer(void){ 810 if (hci_stack->hci_packet_buffer_reserved) { 811 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 812 return false; 813 } 814 hci_stack->hci_packet_buffer_reserved = true; 815 return true; 816 } 817 818 void hci_release_packet_buffer(void){ 819 hci_stack->hci_packet_buffer_reserved = false; 820 } 821 822 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 823 static int hci_transport_synchronous(void){ 824 return hci_stack->hci_transport->can_send_packet_now == NULL; 825 } 826 827 // used for debugging 828 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 829 static void hci_controller_dump_packets(void){ 830 // format: "{handle:04x}:{count:02d} " 831 char summaries[3][7 * 8 + 1]; 832 uint16_t totals[3]; 833 uint8_t index; 834 for (index = 0 ; index < 3 ; index++){ 835 summaries[index][0] = 0; 836 totals[index] = 0; 837 } 838 btstack_linked_item_t *it; 839 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 840 hci_connection_t * connection = (hci_connection_t *) it; 841 switch (connection->address_type){ 842 case BD_ADDR_TYPE_ACL: 843 index = 0; 844 break; 845 case BD_ADDR_TYPE_SCO: 846 index = 2; 847 break; 848 default: 849 index = 1; 850 break; 851 } 852 totals[index] += connection->num_packets_sent; 853 char item_text[10]; 854 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 855 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 856 } 857 for (index = 0 ; index < 3 ; index++){ 858 if (summaries[index][0] == 0){ 859 summaries[index][0] = '-'; 860 summaries[index][1] = 0; 861 } 862 } 863 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 864 } 865 #endif 866 867 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 868 869 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 870 871 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 872 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 873 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 874 max_acl_data_packet_length = hci_stack->le_data_packets_length; 875 } 876 877 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 878 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 879 max_acl_data_packet_length = connection->le_max_tx_octets; 880 } 881 #endif 882 883 log_debug("hci_send_acl_packet_fragments entered"); 884 885 uint8_t status = ERROR_CODE_SUCCESS; 886 // multiple packets could be send on a synchronous HCI transport 887 while (true){ 888 889 log_debug("hci_send_acl_packet_fragments loop entered"); 890 891 // get current data 892 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 893 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 894 bool more_fragments = false; 895 896 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 897 if (current_acl_data_packet_length > max_acl_data_packet_length){ 898 more_fragments = true; 899 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 900 } 901 902 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 903 if (acl_header_pos > 0u){ 904 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 905 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 906 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 907 } 908 909 // update header len 910 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 911 912 // count packet 913 connection->num_packets_sent++; 914 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 915 916 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 917 if (more_fragments){ 918 // update start of next fragment to send 919 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 920 } else { 921 // done 922 hci_stack->acl_fragmentation_pos = 0; 923 hci_stack->acl_fragmentation_total_size = 0; 924 } 925 926 // send packet 927 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 928 const int size = current_acl_data_packet_length + 4; 929 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 930 hci_stack->acl_fragmentation_tx_active = 1; 931 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 932 if (err != 0){ 933 // no error from HCI Transport expected 934 status = ERROR_CODE_HARDWARE_FAILURE; 935 } 936 937 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 938 hci_controller_dump_packets(); 939 #endif 940 941 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 942 943 // done yet? 944 if (!more_fragments) break; 945 946 // can send more? 947 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 948 } 949 950 log_debug("hci_send_acl_packet_fragments loop over"); 951 952 // release buffer now for synchronous transport 953 if (hci_transport_synchronous()){ 954 hci_stack->acl_fragmentation_tx_active = 0; 955 hci_release_packet_buffer(); 956 hci_emit_transport_packet_sent(); 957 } 958 959 return status; 960 } 961 962 // pre: caller has reserved the packet buffer 963 uint8_t hci_send_acl_packet_buffer(int size){ 964 btstack_assert(hci_stack->hci_packet_buffer_reserved); 965 966 uint8_t * packet = hci_stack->hci_packet_buffer; 967 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 968 969 hci_connection_t *connection = hci_connection_for_handle( con_handle); 970 if (!connection) { 971 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 972 hci_release_packet_buffer(); 973 hci_emit_transport_packet_sent(); 974 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 975 } 976 977 // check for free places on Bluetooth module 978 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 979 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 980 hci_release_packet_buffer(); 981 hci_emit_transport_packet_sent(); 982 return BTSTACK_ACL_BUFFERS_FULL; 983 } 984 985 #ifdef ENABLE_CLASSIC 986 hci_connection_timestamp(connection); 987 #endif 988 989 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 990 991 // setup data 992 hci_stack->acl_fragmentation_total_size = size; 993 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 994 995 return hci_send_acl_packet_fragments(connection); 996 } 997 998 #ifdef ENABLE_CLASSIC 999 // pre: caller has reserved the packet buffer 1000 uint8_t hci_send_sco_packet_buffer(int size){ 1001 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1002 1003 uint8_t * packet = hci_stack->hci_packet_buffer; 1004 1005 // skip checks in loopback mode 1006 if (!hci_stack->loopback_mode){ 1007 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1008 1009 // check for free places on Bluetooth module 1010 if (!hci_can_send_prepared_sco_packet_now()) { 1011 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1012 hci_release_packet_buffer(); 1013 hci_emit_transport_packet_sent(); 1014 return BTSTACK_ACL_BUFFERS_FULL; 1015 } 1016 1017 // track send packet in connection struct 1018 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1019 if (!connection) { 1020 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1021 hci_release_packet_buffer(); 1022 hci_emit_transport_packet_sent(); 1023 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1024 } 1025 1026 if (hci_have_usb_transport()){ 1027 // token used 1028 hci_stack->sco_can_send_now = false; 1029 } else { 1030 if (hci_stack->synchronous_flow_control_enabled){ 1031 connection->num_packets_sent++; 1032 } else { 1033 connection->sco_tx_ready--; 1034 } 1035 } 1036 } 1037 1038 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1039 1040 #ifdef HAVE_SCO_TRANSPORT 1041 hci_stack->sco_transport->send_packet(packet, size); 1042 hci_release_packet_buffer(); 1043 hci_emit_transport_packet_sent(); 1044 1045 return 0; 1046 #else 1047 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1048 if (hci_transport_synchronous()){ 1049 hci_release_packet_buffer(); 1050 hci_emit_transport_packet_sent(); 1051 } 1052 1053 if (err != 0){ 1054 return ERROR_CODE_HARDWARE_FAILURE; 1055 } 1056 return ERROR_CODE_SUCCESS; 1057 #endif 1058 } 1059 #endif 1060 1061 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1062 static uint8_t hci_send_iso_packet_fragments(void){ 1063 1064 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1065 uint8_t status = ERROR_CODE_SUCCESS; 1066 // multiple packets could be send on a synchronous HCI transport 1067 while (true){ 1068 1069 // get current data 1070 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1071 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1072 bool more_fragments = false; 1073 1074 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1075 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1076 more_fragments = true; 1077 current_iso_data_packet_length = max_iso_data_packet_length; 1078 } 1079 1080 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1081 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1082 uint8_t pb_flags; 1083 if (iso_header_pos == 0u){ 1084 // first fragment, keep TS field 1085 pb_flags = more_fragments ? 0x00 : 0x02; 1086 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1087 } else { 1088 // later fragment, drop TS field 1089 pb_flags = more_fragments ? 0x01 : 0x03; 1090 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1091 } 1092 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1093 1094 // update header len 1095 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1096 1097 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1098 if (more_fragments){ 1099 // update start of next fragment to send 1100 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1101 } else { 1102 // done 1103 hci_stack->iso_fragmentation_pos = 0; 1104 hci_stack->iso_fragmentation_total_size = 0; 1105 } 1106 1107 // send packet 1108 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1109 const int size = current_iso_data_packet_length + 4; 1110 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1111 hci_stack->iso_fragmentation_tx_active = true; 1112 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1113 if (err != 0){ 1114 // no error from HCI Transport expected 1115 status = ERROR_CODE_HARDWARE_FAILURE; 1116 } 1117 1118 // done yet? 1119 if (!more_fragments) break; 1120 1121 // can send more? 1122 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1123 } 1124 1125 // release buffer now for synchronous transport 1126 if (hci_transport_synchronous()){ 1127 hci_stack->iso_fragmentation_tx_active = false; 1128 hci_release_packet_buffer(); 1129 hci_emit_transport_packet_sent(); 1130 } 1131 1132 return status; 1133 } 1134 1135 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1136 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1137 1138 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1139 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1140 if (iso_stream == NULL){ 1141 hci_release_packet_buffer(); 1142 hci_iso_notify_can_send_now(); 1143 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1144 } 1145 1146 // TODO: check for space on controller 1147 1148 // skip iso packets if needed 1149 if (iso_stream->num_packets_to_skip > 0){ 1150 iso_stream->num_packets_to_skip--; 1151 // pretend it was processed and trigger next one 1152 hci_release_packet_buffer(); 1153 hci_iso_notify_can_send_now(); 1154 return ERROR_CODE_SUCCESS; 1155 } 1156 1157 // track outgoing packet sent 1158 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1159 iso_stream->num_packets_sent++; 1160 1161 // setup data 1162 hci_stack->iso_fragmentation_total_size = size; 1163 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1164 1165 return hci_send_iso_packet_fragments(); 1166 } 1167 #endif 1168 1169 static void acl_handler(uint8_t *packet, uint16_t size){ 1170 1171 // get info 1172 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1173 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1174 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1175 uint16_t acl_length = READ_ACL_LENGTH(packet); 1176 1177 // ignore non-registered handle 1178 if (!conn){ 1179 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1180 return; 1181 } 1182 1183 // assert packet is complete 1184 if ((acl_length + 4u) != size){ 1185 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1186 return; 1187 } 1188 1189 #ifdef ENABLE_CLASSIC 1190 // update idle timestamp 1191 hci_connection_timestamp(conn); 1192 #endif 1193 1194 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1195 hci_stack->host_completed_packets = 1; 1196 conn->num_packets_completed++; 1197 #endif 1198 1199 // handle different packet types 1200 switch (acl_flags & 0x03u) { 1201 1202 case 0x01: // continuation fragment 1203 1204 // sanity checks 1205 if (conn->acl_recombination_pos == 0u) { 1206 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1207 return; 1208 } 1209 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1210 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1211 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1212 conn->acl_recombination_pos = 0; 1213 return; 1214 } 1215 1216 // append fragment payload (header already stored) 1217 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1218 &packet[4], acl_length); 1219 conn->acl_recombination_pos += acl_length; 1220 1221 // forward complete L2CAP packet if complete. 1222 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1223 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1224 // reset recombination buffer 1225 conn->acl_recombination_length = 0; 1226 conn->acl_recombination_pos = 0; 1227 } 1228 break; 1229 1230 case 0x02: { // first fragment 1231 1232 // sanity check 1233 if (conn->acl_recombination_pos) { 1234 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1235 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1236 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1237 } 1238 conn->acl_recombination_pos = 0; 1239 } 1240 1241 // peek into L2CAP packet! 1242 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1243 1244 // compare fragment size to L2CAP packet size 1245 if (acl_length >= (l2cap_length + 4u)){ 1246 // forward fragment as L2CAP packet 1247 hci_emit_acl_packet(packet, acl_length + 4u); 1248 } else { 1249 1250 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1251 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1252 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1253 return; 1254 } 1255 1256 // store first fragment and tweak acl length for complete package 1257 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1258 packet, acl_length + 4u); 1259 conn->acl_recombination_pos = acl_length + 4u; 1260 conn->acl_recombination_length = l2cap_length; 1261 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1262 } 1263 break; 1264 1265 } 1266 default: 1267 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1268 return; 1269 } 1270 1271 // execute main loop 1272 hci_run(); 1273 } 1274 1275 static void hci_connection_stop_timer(hci_connection_t * conn){ 1276 btstack_run_loop_remove_timer(&conn->timeout); 1277 #ifdef ENABLE_CLASSIC 1278 btstack_run_loop_remove_timer(&conn->timeout_sco); 1279 #endif 1280 } 1281 1282 static void hci_shutdown_connection(hci_connection_t *conn){ 1283 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1284 1285 #ifdef ENABLE_CLASSIC 1286 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1287 bd_addr_type_t addr_type = conn->address_type; 1288 #endif 1289 #ifdef HAVE_SCO_TRANSPORT 1290 hci_con_handle_t con_handle = conn->con_handle; 1291 #endif 1292 #endif 1293 1294 hci_connection_stop_timer(conn); 1295 1296 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1297 btstack_memory_hci_connection_free( conn ); 1298 1299 // now it's gone 1300 hci_emit_nr_connections_changed(); 1301 1302 #ifdef ENABLE_CLASSIC 1303 #ifdef ENABLE_SCO_OVER_HCI 1304 // update SCO 1305 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1306 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1307 } 1308 #endif 1309 #ifdef HAVE_SCO_TRANSPORT 1310 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1311 hci_stack->sco_transport->close(con_handle); 1312 } 1313 #endif 1314 #endif 1315 } 1316 1317 #ifdef ENABLE_CLASSIC 1318 1319 static const uint16_t hci_acl_packet_type_sizes[] = { 1320 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1321 HCI_ACL_DH1_SIZE, 0, 0, 0, 1322 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1323 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1324 }; 1325 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1326 0, // 3 slot packets 1327 1, // 5 slot packets 1328 25, // EDR 2 mpbs 1329 26, // EDR 3 mbps 1330 39, // 3 slot EDR packts 1331 40, // 5 slot EDR packet 1332 }; 1333 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1334 0x0f00, // 3 slot packets 1335 0xf000, // 5 slot packets 1336 0x1102, // EDR 2 mpbs 1337 0x2204, // EDR 3 mbps 1338 0x0300, // 3 slot EDR packts 1339 0x3000, // 5 slot EDR packet 1340 }; 1341 1342 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1343 // enable packet types based on size 1344 uint16_t packet_types = 0; 1345 unsigned int i; 1346 for (i=0;i<16;i++){ 1347 if (hci_acl_packet_type_sizes[i] == 0) continue; 1348 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1349 packet_types |= 1 << i; 1350 } 1351 } 1352 // disable packet types due to missing local supported features 1353 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1354 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1355 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1356 if (feature_set) continue; 1357 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1358 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1359 } 1360 return packet_types; 1361 } 1362 1363 uint16_t hci_usable_acl_packet_types(void){ 1364 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1365 // flip bits for "may not be used" 1366 return active_packet_types ^ 0x3306; 1367 } 1368 1369 void hci_enable_acl_packet_types(uint16_t packet_types){ 1370 hci_stack->enabled_packet_types_acl = packet_types; 1371 } 1372 1373 static const struct { 1374 uint8_t feature_index; 1375 uint16_t feature_packet_mask; 1376 } hci_sco_packet_type_feature_requirements[] = { 1377 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1378 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1379 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1380 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1381 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1382 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1383 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1384 }; 1385 1386 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1387 static const struct { 1388 uint16_t type; 1389 uint16_t payload_length; 1390 } hci_sco_packet_type_to_payload_length[] = { 1391 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1392 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1393 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1394 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1395 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1396 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1397 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1398 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1399 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1400 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1401 }; 1402 1403 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1404 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1405 unsigned int i; 1406 // disable packet types due to missing local supported features 1407 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1408 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1409 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1410 if (feature_set) continue; 1411 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1412 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1413 } 1414 return packet_types; 1415 } 1416 1417 uint16_t hci_usable_sco_packet_types(void){ 1418 return hci_stack->usable_packet_types_sco; 1419 } 1420 1421 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1422 uint8_t i; 1423 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1424 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1425 return hci_sco_packet_type_to_payload_length[i].payload_length; 1426 } 1427 } 1428 return 0; 1429 } 1430 1431 #endif 1432 1433 uint8_t* hci_get_outgoing_packet_buffer(void){ 1434 // hci packet buffer is >= acl data packet length 1435 return hci_stack->hci_packet_buffer; 1436 } 1437 1438 uint16_t hci_max_acl_data_packet_length(void){ 1439 return hci_stack->acl_data_packet_length; 1440 } 1441 1442 #ifdef ENABLE_CLASSIC 1443 bool hci_extended_sco_link_supported(void){ 1444 // No. 31, byte 3, bit 7 1445 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1446 } 1447 #endif 1448 1449 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1450 // No. 54, byte 6, bit 6 1451 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1452 } 1453 1454 #ifdef ENABLE_CLASSIC 1455 static int gap_ssp_supported(void){ 1456 // No. 51, byte 6, bit 3 1457 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1458 } 1459 #endif 1460 1461 static int hci_classic_supported(void){ 1462 #ifdef ENABLE_CLASSIC 1463 // No. 37, byte 4, bit 5, = No BR/EDR Support 1464 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1465 #else 1466 return 0; 1467 #endif 1468 } 1469 1470 static int hci_le_supported(void){ 1471 #ifdef ENABLE_BLE 1472 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1473 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1474 #else 1475 return 0; 1476 #endif 1477 } 1478 1479 static bool hci_command_supported(uint8_t command_index){ 1480 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1481 } 1482 1483 #ifdef ENABLE_BLE 1484 1485 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1486 static bool hci_extended_advertising_supported(void){ 1487 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1488 } 1489 #endif 1490 1491 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1492 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1493 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1494 } else { 1495 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1496 } 1497 } 1498 1499 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1500 *addr_type = hci_stack->le_own_addr_type; 1501 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1502 } 1503 1504 #ifdef ENABLE_LE_PERIPHERAL 1505 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1506 *addr_type = hci_stack->le_advertisements_own_addr_type; 1507 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1508 }; 1509 #endif 1510 1511 #ifdef ENABLE_LE_CENTRAL 1512 1513 /** 1514 * @brief Get own addr type and address used for LE connections (Central) 1515 */ 1516 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1517 *addr_type = hci_stack->le_connection_own_addr_type; 1518 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1519 } 1520 1521 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1522 1523 uint16_t offset = 3; 1524 uint8_t num_reports = packet[offset]; 1525 offset += 1; 1526 1527 uint16_t i; 1528 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1529 for (i=0; (i<num_reports) && (offset < size);i++){ 1530 // sanity checks on data_length: 1531 uint8_t data_length = packet[offset + 8]; 1532 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1533 if ((offset + 9u + data_length + 1u) > size) return; 1534 // setup event 1535 uint8_t event_size = 10u + data_length; 1536 uint16_t pos = 0; 1537 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1538 event[pos++] = event_size; 1539 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1540 offset += 8; 1541 pos += 8; 1542 event[pos++] = packet[offset + 1 + data_length]; // rssi 1543 event[pos++] = data_length; 1544 offset++; 1545 (void)memcpy(&event[pos], &packet[offset], data_length); 1546 pos += data_length; 1547 offset += data_length + 1u; // rssi 1548 hci_emit_event(event, pos, 1); 1549 } 1550 } 1551 1552 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1553 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1554 uint16_t offset = 3; 1555 uint8_t num_reports = packet[offset++]; 1556 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1557 uint8_t i; 1558 for (i=0; (i<num_reports) && (offset < size);i++){ 1559 // sanity checks on data_length: 1560 uint16_t data_length = packet[offset + 23]; 1561 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1562 if ((offset + 24u + data_length) > size) return; 1563 uint16_t event_type = little_endian_read_16(packet, offset); 1564 offset += 2; 1565 if ((event_type & 0x10) != 0) { 1566 // setup legacy event 1567 uint8_t legacy_event_type; 1568 switch (event_type){ 1569 case 0b0010011: 1570 // ADV_IND 1571 legacy_event_type = 0; 1572 break; 1573 case 0b0010101: 1574 // ADV_DIRECT_IND 1575 legacy_event_type = 1; 1576 break; 1577 case 0b0010010: 1578 // ADV_SCAN_IND 1579 legacy_event_type = 2; 1580 break; 1581 case 0b0010000: 1582 // ADV_NONCONN_IND 1583 legacy_event_type = 3; 1584 break; 1585 case 0b0011011: 1586 case 0b0011010: 1587 // SCAN_RSP 1588 legacy_event_type = 4; 1589 break; 1590 default: 1591 legacy_event_type = 0; 1592 break; 1593 } 1594 uint16_t pos = 0; 1595 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1596 event[pos++] = 10u + data_length; 1597 event[pos++] = legacy_event_type; 1598 // copy address type + address 1599 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1600 offset += 7; 1601 pos += 7; 1602 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1603 offset += 4; 1604 // copy rssi 1605 event[pos++] = packet[offset++]; 1606 // skip periodic advertising interval and direct address 1607 offset += 9; 1608 // copy data len + data; 1609 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1610 pos += 1 +data_length; 1611 offset += 1+ data_length; 1612 hci_emit_event(event, pos, 1); 1613 } else { 1614 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1615 uint8_t report_len = 24 + data_length; 1616 event[1] = report_len; 1617 little_endian_store_16(event, 2, event_type); 1618 memcpy(&event[4], &packet[offset], report_len); 1619 offset += report_len; 1620 hci_emit_event(event, 2 + report_len, 1); 1621 } 1622 } 1623 } 1624 #endif 1625 1626 #endif 1627 #endif 1628 1629 #ifdef ENABLE_BLE 1630 #ifdef ENABLE_LE_PERIPHERAL 1631 static void hci_update_advertisements_enabled_for_current_roles(void){ 1632 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1633 // get number of active le slave connections 1634 int num_slave_connections = 0; 1635 btstack_linked_list_iterator_t it; 1636 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1637 while (btstack_linked_list_iterator_has_next(&it)){ 1638 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1639 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1640 if (con->state != OPEN) continue; 1641 if (con->role != HCI_ROLE_SLAVE) continue; 1642 if (!hci_is_le_connection(con)) continue; 1643 num_slave_connections++; 1644 } 1645 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1646 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1647 } else { 1648 hci_stack->le_advertisements_enabled_for_current_roles = false; 1649 } 1650 } 1651 #endif 1652 #endif 1653 1654 #ifdef ENABLE_CLASSIC 1655 static void gap_run_set_local_name(void){ 1656 hci_reserve_packet_buffer(); 1657 uint8_t * packet = hci_stack->hci_packet_buffer; 1658 // construct HCI Command and send 1659 uint16_t opcode = hci_write_local_name.opcode; 1660 hci_stack->last_cmd_opcode = opcode; 1661 packet[0] = opcode & 0xff; 1662 packet[1] = opcode >> 8; 1663 packet[2] = DEVICE_NAME_LEN; 1664 memset(&packet[3], 0, DEVICE_NAME_LEN); 1665 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1666 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1667 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1668 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1669 // expand '00:00:00:00:00:00' in name with bd_addr 1670 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1671 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1672 } 1673 1674 static void gap_run_set_eir_data(void){ 1675 hci_reserve_packet_buffer(); 1676 uint8_t * packet = hci_stack->hci_packet_buffer; 1677 // construct HCI Command in-place and send 1678 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1679 hci_stack->last_cmd_opcode = opcode; 1680 uint16_t offset = 0; 1681 packet[offset++] = opcode & 0xff; 1682 packet[offset++] = opcode >> 8; 1683 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1684 packet[offset++] = 0; // FEC not required 1685 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1686 if (hci_stack->eir_data){ 1687 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1688 ad_context_t context; 1689 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1690 uint8_t data_type = ad_iterator_get_data_type(&context); 1691 uint8_t size = ad_iterator_get_data_len(&context); 1692 const uint8_t *data = ad_iterator_get_data(&context); 1693 // copy item 1694 packet[offset++] = size + 1; 1695 packet[offset++] = data_type; 1696 memcpy(&packet[offset], data, size); 1697 // update name item 1698 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1699 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1700 } 1701 offset += size; 1702 } 1703 } else { 1704 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1705 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1706 packet[offset++] = bytes_to_copy + 1; 1707 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1708 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1709 // expand '00:00:00:00:00:00' in name with bd_addr 1710 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1711 } 1712 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1713 } 1714 1715 static void hci_run_gap_tasks_classic(void){ 1716 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1717 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1718 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1719 return; 1720 } 1721 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1722 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1723 gap_run_set_local_name(); 1724 return; 1725 } 1726 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1727 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1728 gap_run_set_eir_data(); 1729 return; 1730 } 1731 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1732 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1733 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1734 return; 1735 } 1736 // write page scan activity 1737 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1738 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1739 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1740 return; 1741 } 1742 // write page scan type 1743 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1744 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1745 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1746 return; 1747 } 1748 // write page timeout 1749 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1750 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1751 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1752 return; 1753 } 1754 // send scan enable 1755 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1756 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1757 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1758 return; 1759 } 1760 // send write scan activity 1761 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1762 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1763 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1764 return; 1765 } 1766 // send write inquiry transmit power level 1767 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1768 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1769 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1770 return; 1771 } 1772 } 1773 #endif 1774 1775 #ifndef HAVE_HOST_CONTROLLER_API 1776 1777 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1778 if (!hci_stack->config) return 0; 1779 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1780 // Limit baud rate for Broadcom chipsets to 3 mbps 1781 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1782 baud_rate = 3000000; 1783 } 1784 return baud_rate; 1785 } 1786 1787 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1788 UNUSED(ds); 1789 1790 switch (hci_stack->substate){ 1791 case HCI_INIT_W4_SEND_RESET: 1792 log_info("Resend HCI Reset"); 1793 hci_stack->substate = HCI_INIT_SEND_RESET; 1794 hci_stack->num_cmd_packets = 1; 1795 hci_run(); 1796 break; 1797 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1798 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1799 if (hci_stack->hci_transport->reset_link){ 1800 hci_stack->hci_transport->reset_link(); 1801 } 1802 1803 /* fall through */ 1804 1805 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1806 log_info("Resend HCI Reset - CSR Warm Boot"); 1807 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1808 hci_stack->num_cmd_packets = 1; 1809 hci_run(); 1810 break; 1811 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1812 if (hci_stack->hci_transport->set_baudrate){ 1813 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1814 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1815 hci_stack->hci_transport->set_baudrate(baud_rate); 1816 } 1817 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1818 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1819 if (hci_stack->hci_transport->reset_link){ 1820 log_info("Link Reset"); 1821 hci_stack->hci_transport->reset_link(); 1822 } 1823 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1824 hci_run(); 1825 } 1826 break; 1827 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1828 // otherwise continue 1829 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1830 hci_send_cmd(&hci_read_local_supported_commands); 1831 break; 1832 default: 1833 break; 1834 } 1835 } 1836 #endif 1837 1838 static void hci_initializing_next_state(void){ 1839 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1840 } 1841 1842 static void hci_init_done(void){ 1843 // done. tell the app 1844 log_info("hci_init_done -> HCI_STATE_WORKING"); 1845 hci_stack->state = HCI_STATE_WORKING; 1846 hci_emit_state(); 1847 } 1848 1849 // assumption: hci_can_send_command_packet_now() == true 1850 static void hci_initializing_run(void){ 1851 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1852 1853 if (!hci_can_send_command_packet_now()) return; 1854 1855 #ifndef HAVE_HOST_CONTROLLER_API 1856 bool need_baud_change = hci_stack->config 1857 && hci_stack->chipset 1858 && hci_stack->chipset->set_baudrate_command 1859 && hci_stack->hci_transport->set_baudrate 1860 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1861 #endif 1862 1863 switch (hci_stack->substate){ 1864 case HCI_INIT_SEND_RESET: 1865 hci_state_reset(); 1866 1867 #ifndef HAVE_HOST_CONTROLLER_API 1868 // prepare reset if command complete not received in 100ms 1869 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1870 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1871 btstack_run_loop_add_timer(&hci_stack->timeout); 1872 #endif 1873 // send command 1874 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1875 hci_send_cmd(&hci_reset); 1876 break; 1877 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1878 hci_send_cmd(&hci_read_local_version_information); 1879 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1880 break; 1881 1882 #ifndef HAVE_HOST_CONTROLLER_API 1883 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1884 hci_state_reset(); 1885 // prepare reset if command complete not received in 100ms 1886 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1887 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1888 btstack_run_loop_add_timer(&hci_stack->timeout); 1889 // send command 1890 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1891 hci_send_cmd(&hci_reset); 1892 break; 1893 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1894 hci_state_reset(); 1895 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1896 hci_send_cmd(&hci_reset); 1897 break; 1898 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1899 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1900 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1901 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1902 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1903 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1904 break; 1905 } 1906 case HCI_INIT_SET_BD_ADDR: 1907 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1908 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1909 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1910 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1911 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1912 break; 1913 case HCI_INIT_SEND_READ_LOCAL_NAME: 1914 #ifdef ENABLE_CLASSIC 1915 hci_send_cmd(&hci_read_local_name); 1916 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1917 break; 1918 #endif 1919 /* fall through */ 1920 1921 case HCI_INIT_SEND_BAUD_CHANGE: 1922 if (need_baud_change) { 1923 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1924 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1925 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1926 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1927 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1928 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1929 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1930 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1931 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1932 btstack_run_loop_add_timer(&hci_stack->timeout); 1933 } 1934 break; 1935 } 1936 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1937 1938 /* fall through */ 1939 1940 case HCI_INIT_CUSTOM_INIT: 1941 case HCI_INIT_CUSTOM_PRE_INIT: 1942 // Custom initialization 1943 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1944 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1945 bool send_cmd = false; 1946 switch (hci_stack->chipset_result){ 1947 case BTSTACK_CHIPSET_VALID_COMMAND: 1948 send_cmd = true; 1949 switch (hci_stack->substate){ 1950 case HCI_INIT_CUSTOM_INIT: 1951 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1952 break; 1953 case HCI_INIT_CUSTOM_PRE_INIT: 1954 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1955 break; 1956 default: 1957 btstack_assert(false); 1958 break; 1959 } 1960 break; 1961 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1962 send_cmd = true; 1963 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1964 log_info("CSR Warm Boot"); 1965 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1966 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1967 btstack_run_loop_add_timer(&hci_stack->timeout); 1968 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1969 && hci_stack->config 1970 && hci_stack->chipset 1971 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1972 && hci_stack->hci_transport->set_baudrate 1973 && hci_transport_uart_get_main_baud_rate()){ 1974 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1975 } else { 1976 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1977 } 1978 break; 1979 default: 1980 break; 1981 } 1982 1983 if (send_cmd){ 1984 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1985 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1986 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1987 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1988 break; 1989 } 1990 log_info("Init script done"); 1991 1992 // Custom Pre-Init complete, start regular init with HCI Reset 1993 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1994 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1995 hci_send_cmd(&hci_reset); 1996 break; 1997 } 1998 1999 // Init script download on Broadcom chipsets causes: 2000 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2001 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2002 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2003 2004 // - baud rate to reset, restore UART baud rate if needed 2005 if (need_baud_change) { 2006 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2007 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2008 hci_stack->hci_transport->set_baudrate(baud_rate); 2009 } 2010 2011 uint16_t bcm_delay_ms = 300; 2012 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2013 // -> Work around: wait here. 2014 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2015 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2016 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2017 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2018 btstack_run_loop_add_timer(&hci_stack->timeout); 2019 break; 2020 } 2021 } 2022 #endif 2023 /* fall through */ 2024 2025 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2026 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2027 hci_send_cmd(&hci_read_local_supported_commands); 2028 break; 2029 case HCI_INIT_READ_BD_ADDR: 2030 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2031 hci_send_cmd(&hci_read_bd_addr); 2032 break; 2033 case HCI_INIT_READ_BUFFER_SIZE: 2034 // only read buffer size if supported 2035 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2036 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2037 hci_send_cmd(&hci_read_buffer_size); 2038 break; 2039 } 2040 2041 /* fall through */ 2042 2043 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2044 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2045 hci_send_cmd(&hci_read_local_supported_features); 2046 break; 2047 2048 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2049 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2050 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2051 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2052 break; 2053 case HCI_INIT_HOST_BUFFER_SIZE: 2054 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2055 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2056 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2057 break; 2058 #endif 2059 2060 case HCI_INIT_SET_EVENT_MASK: 2061 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2062 if (hci_le_supported()){ 2063 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2064 } else { 2065 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2066 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2067 } 2068 break; 2069 2070 case HCI_INIT_SET_EVENT_MASK_2: 2071 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2072 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2073 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2074 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2075 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2076 // Encryption Change Event v2 - bit 25 2077 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2078 break; 2079 } 2080 2081 #ifdef ENABLE_CLASSIC 2082 /* fall through */ 2083 2084 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2085 if (hci_classic_supported() && gap_ssp_supported()){ 2086 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2087 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2088 break; 2089 } 2090 2091 /* fall through */ 2092 2093 case HCI_INIT_WRITE_INQUIRY_MODE: 2094 if (hci_classic_supported()){ 2095 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2096 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2097 break; 2098 } 2099 2100 /* fall through */ 2101 2102 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2103 // skip write secure connections host support if not supported or disabled 2104 if (hci_classic_supported() && hci_stack->secure_connections_enable 2105 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2106 hci_stack->secure_connections_active = true; 2107 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2108 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2109 break; 2110 } 2111 2112 /* fall through */ 2113 2114 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2115 // skip set min encryption key size 2116 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2117 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2118 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2119 break; 2120 } 2121 2122 #ifdef ENABLE_SCO_OVER_HCI 2123 /* fall through */ 2124 2125 // only sent if ENABLE_SCO_OVER_HCI is defined 2126 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2127 // skip write synchronous flow control if not supported 2128 if (hci_classic_supported() 2129 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2130 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2131 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2132 break; 2133 } 2134 /* fall through */ 2135 2136 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2137 // skip write default erroneous data reporting if not supported 2138 if (hci_classic_supported() 2139 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2140 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2141 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2142 break; 2143 } 2144 #endif 2145 2146 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2147 /* fall through */ 2148 2149 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2150 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2151 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2152 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2153 #ifdef ENABLE_SCO_OVER_HCI 2154 log_info("BCM: Route SCO data via HCI transport"); 2155 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2156 #endif 2157 #ifdef ENABLE_SCO_OVER_PCM 2158 log_info("BCM: Route SCO data via PCM interface"); 2159 #ifdef ENABLE_BCM_PCM_WBS 2160 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2161 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2162 #else 2163 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2164 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2165 #endif 2166 #endif 2167 break; 2168 } 2169 #endif 2170 2171 #ifdef ENABLE_SCO_OVER_PCM 2172 /* fall through */ 2173 2174 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2175 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2176 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2177 log_info("BCM: Config PCM interface for I2S"); 2178 #ifdef ENABLE_BCM_PCM_WBS 2179 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2180 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2181 #else 2182 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2183 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2184 #endif 2185 break; 2186 } 2187 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2188 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2189 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2190 log_info("BCM: Config PCM Data format"); 2191 // msb first, fill bits 0, left justified 2192 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2193 break; 2194 } 2195 #ifdef HAVE_BCM_PCM2 2196 case HCI_INIT_BCM_PCM2_SETUP: 2197 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2198 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2199 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2200 uint32_t pcm_clock_freq; 2201 uint8_t ch_0_period; 2202 #ifdef ENABLE_BCM_PCM_WBS 2203 // 512 kHz, resample 8 kHz to 16 khz 2204 pcm_clock_freq = 512000; 2205 ch_0_period = 1; 2206 #else 2207 // 256 khz, 8 khz output 2208 pcm_clock_freq = 256000; 2209 ch_0_period = 0; 2210 #endif 2211 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2212 hci_send_cmd(&hci_bcm_pcm2_setup, 2213 0x00, // Action = Write 2214 0x00, // Test_Options = None 2215 op_mode, // Op_Mode 2216 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2217 pcm_clock_freq, // PCM_Clock_Freq 2218 0x01, // Sync_Signal_Width 2219 0x0F, // Slot_Width 2220 0x01, // NumberOfSlots 2221 0x00, // Bank_0_Fill_Mode = 0s 2222 0x00, // Bank_0_Number_of_Fill_Bits 2223 0x00, // Bank_0_Programmable_Fill_Data 2224 0x00, // Bank_1_Fill_Mode = 0s 2225 0x00, // Bank_1_Number_of_Fill_Bits 2226 0x00, // Bank_1_Programmable_Fill_Data 2227 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2228 0x00, // Ch_0_Slot_Number 2229 0x01, // Ch_1_Slot_Number 2230 0x02, // Ch_2_Slot_Number 2231 0x03, // Ch_3_Slot_Number 2232 0x04, // Ch_4_Slot_Number 2233 ch_0_period, // Ch_0_Period 2234 0x00, // Ch_1_Period 2235 0x00 // Ch_2_Period 2236 ); 2237 break; 2238 } 2239 #endif 2240 #endif /* ENABLE_SCO_OVER_PCM */ 2241 #endif /* ENABLE_CLASSIC */ 2242 2243 #ifdef ENABLE_BLE 2244 /* fall through */ 2245 2246 // LE INIT 2247 case HCI_INIT_LE_READ_BUFFER_SIZE: 2248 if (hci_le_supported()){ 2249 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2250 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2251 hci_send_cmd(&hci_le_read_buffer_size_v2); 2252 } else { 2253 hci_send_cmd(&hci_le_read_buffer_size); 2254 } 2255 break; 2256 } 2257 2258 /* fall through */ 2259 2260 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2261 // skip write le host if not supported (e.g. on LE only EM9301) 2262 if (hci_le_supported() 2263 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2264 // LE Supported Host = 1, Simultaneous Host = 0 2265 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2266 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2267 break; 2268 } 2269 2270 /* fall through */ 2271 2272 case HCI_INIT_LE_SET_EVENT_MASK: 2273 if (hci_le_supported()){ 2274 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2275 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2276 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x07); // all events from core v5.3 2277 #else 2278 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2279 #endif 2280 break; 2281 } 2282 #endif 2283 2284 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2285 /* fall through */ 2286 2287 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2288 if (hci_le_supported() 2289 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2290 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2291 hci_send_cmd(&hci_le_read_maximum_data_length); 2292 break; 2293 } 2294 2295 /* fall through */ 2296 2297 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2298 if (hci_le_supported() 2299 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2300 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2301 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2302 break; 2303 } 2304 #endif 2305 2306 #ifdef ENABLE_LE_CENTRAL 2307 /* fall through */ 2308 2309 case HCI_INIT_READ_WHITE_LIST_SIZE: 2310 if (hci_le_supported()){ 2311 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2312 hci_send_cmd(&hci_le_read_white_list_size); 2313 break; 2314 } 2315 2316 #endif 2317 2318 #ifdef ENABLE_LE_PERIPHERAL 2319 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2320 /* fall through */ 2321 2322 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2323 if (hci_extended_advertising_supported()){ 2324 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2325 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2326 break; 2327 } 2328 #endif 2329 #endif 2330 /* fall through */ 2331 2332 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2333 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2334 if (hci_le_supported()) { 2335 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2336 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2337 break; 2338 } 2339 #endif 2340 2341 /* fall through */ 2342 2343 case HCI_INIT_DONE: 2344 hci_stack->substate = HCI_INIT_DONE; 2345 // main init sequence complete 2346 #ifdef ENABLE_CLASSIC 2347 // check if initial Classic GAP Tasks are completed 2348 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2349 hci_run_gap_tasks_classic(); 2350 break; 2351 } 2352 #endif 2353 #ifdef ENABLE_BLE 2354 #ifdef ENABLE_LE_CENTRAL 2355 // check if initial LE GAP Tasks are completed 2356 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2357 hci_run_general_gap_le(); 2358 break; 2359 } 2360 #endif 2361 #endif 2362 hci_init_done(); 2363 break; 2364 2365 default: 2366 return; 2367 } 2368 } 2369 2370 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2371 bool command_completed = false; 2372 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2373 uint16_t opcode = little_endian_read_16(packet,3); 2374 if (opcode == hci_stack->last_cmd_opcode){ 2375 command_completed = true; 2376 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2377 } else { 2378 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2379 } 2380 } 2381 2382 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2383 uint8_t status = packet[2]; 2384 uint16_t opcode = little_endian_read_16(packet,4); 2385 if (opcode == hci_stack->last_cmd_opcode){ 2386 if (status){ 2387 command_completed = true; 2388 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2389 } else { 2390 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2391 } 2392 } else { 2393 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2394 } 2395 } 2396 #ifndef HAVE_HOST_CONTROLLER_API 2397 // Vendor == CSR 2398 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2399 // TODO: track actual command 2400 command_completed = true; 2401 } 2402 2403 // Vendor == Toshiba 2404 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2405 // TODO: track actual command 2406 command_completed = true; 2407 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2408 hci_stack->num_cmd_packets = 1; 2409 } 2410 #endif 2411 2412 return command_completed; 2413 } 2414 2415 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2416 2417 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2418 2419 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2420 2421 #ifndef HAVE_HOST_CONTROLLER_API 2422 2423 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2424 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2425 // 2426 // HCI Reset 2427 // Timeout 100 ms 2428 // HCI Reset 2429 // Command Complete Reset 2430 // HCI Read Local Version Information 2431 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2432 // hang... 2433 // 2434 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2435 if (!command_completed 2436 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2437 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2438 2439 uint16_t opcode = little_endian_read_16(packet,3); 2440 if (opcode == hci_reset.opcode){ 2441 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2442 return; 2443 } 2444 } 2445 2446 // CSR & H5 2447 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2448 if (!command_completed 2449 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2450 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2451 2452 uint16_t opcode = little_endian_read_16(packet,3); 2453 if (opcode == hci_reset.opcode){ 2454 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2455 return; 2456 } 2457 } 2458 2459 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2460 // fix: Correct substate and behave as command below 2461 if (command_completed){ 2462 switch (hci_stack->substate){ 2463 case HCI_INIT_SEND_RESET: 2464 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2465 break; 2466 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2467 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2468 break; 2469 default: 2470 break; 2471 } 2472 } 2473 2474 #endif 2475 2476 if (!command_completed) return; 2477 2478 bool need_baud_change = false; 2479 bool need_addr_change = false; 2480 2481 #ifndef HAVE_HOST_CONTROLLER_API 2482 need_baud_change = hci_stack->config 2483 && hci_stack->chipset 2484 && hci_stack->chipset->set_baudrate_command 2485 && hci_stack->hci_transport->set_baudrate 2486 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2487 2488 need_addr_change = hci_stack->custom_bd_addr_set 2489 && hci_stack->chipset 2490 && hci_stack->chipset->set_bd_addr_command; 2491 #endif 2492 2493 switch(hci_stack->substate){ 2494 2495 #ifndef HAVE_HOST_CONTROLLER_API 2496 case HCI_INIT_SEND_RESET: 2497 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2498 // fix: just correct substate and behave as command below 2499 2500 /* fall through */ 2501 #endif 2502 2503 case HCI_INIT_W4_SEND_RESET: 2504 btstack_run_loop_remove_timer(&hci_stack->timeout); 2505 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2506 return; 2507 2508 #ifndef HAVE_HOST_CONTROLLER_API 2509 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2510 // for STLC2500D, baud rate change already happened. 2511 // for others, baud rate gets changed now 2512 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2513 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2514 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2515 hci_stack->hci_transport->set_baudrate(baud_rate); 2516 } 2517 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2518 return; 2519 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2520 btstack_run_loop_remove_timer(&hci_stack->timeout); 2521 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2522 return; 2523 case HCI_INIT_W4_CUSTOM_INIT: 2524 // repeat custom init 2525 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2526 return; 2527 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2528 // repeat custom init 2529 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2530 return; 2531 #endif 2532 2533 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2534 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2535 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2536 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2537 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2538 return; 2539 } 2540 if (need_addr_change){ 2541 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2542 return; 2543 } 2544 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2545 return; 2546 #ifndef HAVE_HOST_CONTROLLER_API 2547 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2548 if (need_baud_change){ 2549 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2550 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2551 hci_stack->hci_transport->set_baudrate(baud_rate); 2552 } 2553 if (need_addr_change){ 2554 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2555 return; 2556 } 2557 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2558 return; 2559 case HCI_INIT_W4_SET_BD_ADDR: 2560 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2561 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2562 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2563 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2564 return; 2565 } 2566 // skipping st warm boot 2567 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2568 return; 2569 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2570 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2571 return; 2572 #endif 2573 2574 case HCI_INIT_DONE: 2575 // set state if we came here by fall through 2576 hci_stack->substate = HCI_INIT_DONE; 2577 return; 2578 2579 default: 2580 break; 2581 } 2582 hci_initializing_next_state(); 2583 } 2584 2585 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2586 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2587 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2588 // check if we have been aware of the HCI connection 2589 switch (conn->state){ 2590 case SENT_CREATE_CONNECTION: 2591 case RECEIVED_CONNECTION_REQUEST: 2592 case ACCEPTED_CONNECTION_REQUEST: 2593 break; 2594 default: 2595 return; 2596 } 2597 2598 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2599 bd_addr_t bd_address; 2600 (void)memcpy(&bd_address, conn->address, 6); 2601 2602 #ifdef ENABLE_CLASSIC 2603 // cache needed data 2604 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2605 #endif 2606 2607 // connection failed, remove entry 2608 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2609 btstack_memory_hci_connection_free( conn ); 2610 2611 #ifdef ENABLE_CLASSIC 2612 // notify client if dedicated bonding 2613 if (notify_dedicated_bonding_failed){ 2614 log_info("hci notify_dedicated_bonding_failed"); 2615 hci_emit_dedicated_bonding_result(bd_address, status); 2616 } 2617 2618 // if authentication error, also delete link key 2619 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2620 gap_drop_link_key_for_bd_addr(bd_address); 2621 } 2622 #else 2623 UNUSED(status); 2624 #endif 2625 } 2626 2627 #ifdef ENABLE_CLASSIC 2628 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2629 // SSP Controller 2630 if (features[6] & (1 << 3)){ 2631 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2632 } 2633 // eSCO 2634 if (features[3] & (1<<7)){ 2635 conn->remote_supported_features[0] |= 1; 2636 } 2637 // Extended features 2638 if (features[7] & (1<<7)){ 2639 conn->remote_supported_features[0] |= 2; 2640 } 2641 // SCO packet types 2642 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2643 } 2644 2645 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2646 // SSP Host 2647 if (features[0] & (1 << 0)){ 2648 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2649 } 2650 // SC Host 2651 if (features[0] & (1 << 3)){ 2652 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2653 } 2654 } 2655 2656 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2657 // SC Controller 2658 if (features[1] & (1 << 0)){ 2659 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2660 } 2661 } 2662 2663 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2664 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2665 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2666 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2667 if (conn->bonding_flags & BONDING_DEDICATED){ 2668 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2669 } 2670 } 2671 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2672 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2673 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2674 } 2675 2676 #endif 2677 2678 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2679 // handle BT initialization 2680 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2681 hci_initializing_event_handler(packet, size); 2682 } 2683 2684 // help with BT sleep 2685 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2686 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2687 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2688 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2689 hci_initializing_next_state(); 2690 } 2691 } 2692 2693 #ifdef ENABLE_CLASSIC 2694 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2695 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2696 conn->requested_security_level = LEVEL_0; 2697 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2698 hci_emit_security_level(conn->con_handle, security_level); 2699 2700 // dedicated bonding 2701 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2702 conn->bonding_flags &= ~BONDING_DEDICATED; 2703 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2704 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2705 // emit dedicated bonding complete, don't disconnect 2706 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2707 #else 2708 // request disconnect, event is emitted after disconnect 2709 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2710 #endif 2711 } 2712 } 2713 2714 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2715 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2716 conn->encryption_key_size = encryption_key_size; 2717 2718 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2719 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2720 hci_handle_mutual_authentication_completed(conn); 2721 } else { 2722 // otherwise trigger remote feature request and send authentication request 2723 hci_trigger_remote_features_for_connection(conn); 2724 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2725 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2726 } 2727 } 2728 } 2729 #endif 2730 2731 static void hci_store_local_supported_commands(const uint8_t * packet){ 2732 // create mapping table 2733 #define X(name, offset, bit) { offset, bit }, 2734 static struct { 2735 uint8_t byte_offset; 2736 uint8_t bit_position; 2737 } supported_hci_commands_map [] = { 2738 SUPPORTED_HCI_COMMANDS 2739 }; 2740 #undef X 2741 2742 // create names for debug purposes 2743 #ifdef ENABLE_LOG_DEBUG 2744 #define X(name, offset, bit) #name, 2745 static const char * command_names[] = { 2746 SUPPORTED_HCI_COMMANDS 2747 }; 2748 #undef X 2749 #endif 2750 2751 hci_stack->local_supported_commands = 0; 2752 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2753 uint16_t i; 2754 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2755 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2756 #ifdef ENABLE_LOG_DEBUG 2757 log_info("Command %s (%u) supported %u/%u", command_names[i], i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2758 #else 2759 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2760 #endif 2761 hci_stack->local_supported_commands |= (1LU << i); 2762 } 2763 } 2764 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2765 } 2766 2767 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2768 UNUSED(size); 2769 2770 uint8_t status = 0; 2771 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2772 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2773 } 2774 uint16_t manufacturer; 2775 #ifdef ENABLE_CLASSIC 2776 hci_connection_t * conn; 2777 #endif 2778 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2779 hci_con_handle_t handle; 2780 #endif 2781 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2782 le_audio_cig_t * cig; 2783 #endif 2784 2785 // get num cmd packets - limit to 1 to reduce complexity 2786 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2787 2788 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2789 switch (opcode){ 2790 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2791 if (status) break; 2792 // terminate, name 248 chars 2793 packet[6+248] = 0; 2794 log_info("local name: %s", &packet[6]); 2795 break; 2796 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2797 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2798 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2799 uint16_t acl_len = little_endian_read_16(packet, 6); 2800 uint16_t sco_len = packet[8]; 2801 2802 // determine usable ACL/SCO payload size 2803 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2804 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2805 2806 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2807 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2808 2809 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2810 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2811 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2812 } 2813 break; 2814 case HCI_OPCODE_HCI_READ_RSSI: 2815 if (status == ERROR_CODE_SUCCESS){ 2816 uint8_t event[5]; 2817 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2818 event[1] = 3; 2819 (void)memcpy(&event[2], &packet[6], 3); 2820 hci_emit_event(event, sizeof(event), 1); 2821 } 2822 break; 2823 #ifdef ENABLE_BLE 2824 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2825 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2826 hci_stack->le_iso_packets_total_num = packet[11]; 2827 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2828 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2829 2830 /* fall through */ 2831 2832 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2833 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2834 hci_stack->le_acl_packets_total_num = packet[8]; 2835 // determine usable ACL payload size 2836 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2837 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2838 } 2839 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); 2840 break; 2841 #endif 2842 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2843 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2844 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2845 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2846 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); 2847 break; 2848 #endif 2849 #ifdef ENABLE_LE_CENTRAL 2850 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2851 hci_stack->le_whitelist_capacity = packet[6]; 2852 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2853 break; 2854 #endif 2855 #ifdef ENABLE_LE_PERIPHERAL 2856 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2857 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2858 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2859 break; 2860 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2861 if (hci_stack->le_advertising_set_in_current_command != 0) { 2862 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2863 hci_stack->le_advertising_set_in_current_command = 0; 2864 if (advertising_set == NULL) break; 2865 uint8_t adv_status = packet[6]; 2866 uint8_t tx_power = packet[7]; 2867 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 }; 2868 if (adv_status == 0){ 2869 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2870 } 2871 hci_emit_event(event, sizeof(event), 1); 2872 } 2873 break; 2874 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2875 if (hci_stack->le_advertising_set_in_current_command != 0) { 2876 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2877 hci_stack->le_advertising_set_in_current_command = 0; 2878 if (advertising_set == NULL) break; 2879 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2880 if (status == 0){ 2881 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2882 } 2883 hci_emit_event(event, sizeof(event), 1); 2884 } 2885 break; 2886 #endif 2887 #endif 2888 case HCI_OPCODE_HCI_READ_BD_ADDR: 2889 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2890 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2891 #ifdef ENABLE_CLASSIC 2892 if (hci_stack->link_key_db){ 2893 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2894 } 2895 #endif 2896 break; 2897 #ifdef ENABLE_CLASSIC 2898 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2899 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2900 break; 2901 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2902 if (status == ERROR_CODE_SUCCESS) { 2903 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2904 } else { 2905 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2906 } 2907 break; 2908 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2909 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2910 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2911 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2912 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2913 hci_emit_event(event, sizeof(event), 1); 2914 } 2915 break; 2916 #endif 2917 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2918 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2919 2920 #ifdef ENABLE_CLASSIC 2921 // determine usable ACL packet types based on host buffer size and supported features 2922 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2923 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2924 // determine usable SCO packet types based on supported features 2925 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2926 &hci_stack->local_supported_features[0]); 2927 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2928 #endif 2929 // Classic/LE 2930 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2931 break; 2932 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2933 manufacturer = little_endian_read_16(packet, 10); 2934 // map Cypress & Infineon to Broadcom 2935 switch (manufacturer){ 2936 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2937 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2938 log_info("Treat Cypress/Infineon as Broadcom"); 2939 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2940 little_endian_store_16(packet, 10, manufacturer); 2941 break; 2942 default: 2943 break; 2944 } 2945 hci_stack->manufacturer = manufacturer; 2946 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2947 break; 2948 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2949 hci_store_local_supported_commands(packet); 2950 break; 2951 #ifdef ENABLE_CLASSIC 2952 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2953 if (status) return; 2954 hci_stack->synchronous_flow_control_enabled = 1; 2955 break; 2956 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2957 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2958 conn = hci_connection_for_handle(handle); 2959 if (conn != NULL) { 2960 uint8_t key_size = 0; 2961 if (status == 0){ 2962 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2963 log_info("Handle %04x key Size: %u", handle, key_size); 2964 } else { 2965 key_size = 1; 2966 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2967 } 2968 hci_handle_read_encryption_key_size_complete(conn, key_size); 2969 } 2970 break; 2971 // assert pairing complete event is emitted. 2972 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2973 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2974 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2975 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2976 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2977 // lookup connection by gap pairing addr 2978 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2979 if (conn == NULL) break; 2980 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2981 break; 2982 2983 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2984 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2985 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2986 uint8_t event[67]; 2987 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2988 event[1] = 65; 2989 (void)memset(&event[2], 0, 65); 2990 if (status == ERROR_CODE_SUCCESS){ 2991 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2992 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2993 event[2] = 3; 2994 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2995 } else { 2996 event[2] = 1; 2997 } 2998 } 2999 hci_emit_event(event, sizeof(event), 0); 3000 break; 3001 } 3002 3003 // note: only needed if user does not provide OOB data 3004 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3005 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3006 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3007 if (conn == NULL) break; 3008 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3009 break; 3010 #endif 3011 #endif 3012 #ifdef ENABLE_BLE 3013 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3014 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3015 // lookup CIG 3016 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3017 if (cig != NULL){ 3018 uint8_t i = 0; 3019 if (status == ERROR_CODE_SUCCESS){ 3020 // assign CIS handles to pre-allocated CIS 3021 btstack_linked_list_iterator_t it; 3022 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3023 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3024 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3025 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3026 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3027 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3028 iso_stream->cis_handle = cis_handle; 3029 cig->cis_con_handles[i] = cis_handle; 3030 i++; 3031 } 3032 } 3033 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3034 hci_emit_cig_created(cig, status); 3035 } else { 3036 hci_emit_cig_created(cig, status); 3037 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3038 } 3039 } 3040 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3041 break; 3042 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3043 if (status != ERROR_CODE_SUCCESS){ 3044 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3045 } 3046 break; 3047 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3048 if (status != ERROR_CODE_SUCCESS){ 3049 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3050 } 3051 break; 3052 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3053 // lookup BIG by state 3054 btstack_linked_list_iterator_t it; 3055 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3056 while (btstack_linked_list_iterator_has_next(&it)) { 3057 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3058 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3059 if (status == ERROR_CODE_SUCCESS){ 3060 big->state_vars.next_bis++; 3061 if (big->state_vars.next_bis == big->num_bis){ 3062 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3063 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3064 } else { 3065 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3066 } 3067 } else { 3068 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3069 big->state_vars.status = status; 3070 } 3071 return; 3072 } 3073 } 3074 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3075 while (btstack_linked_list_iterator_has_next(&it)) { 3076 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3077 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3078 if (status == ERROR_CODE_SUCCESS){ 3079 big_sync->state_vars.next_bis++; 3080 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3081 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3082 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3083 } else { 3084 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3085 } 3086 } else { 3087 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3088 big_sync->state_vars.status = status; 3089 } 3090 return; 3091 } 3092 } 3093 // Lookup CIS via active group operation 3094 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3095 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3096 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3097 3098 // lookup CIS by state 3099 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3100 while (btstack_linked_list_iterator_has_next(&it)){ 3101 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3102 handle = iso_stream->cis_handle; 3103 bool emit_cis_created = false; 3104 switch (iso_stream->state){ 3105 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3106 if (status != ERROR_CODE_SUCCESS){ 3107 emit_cis_created = true; 3108 break; 3109 } 3110 if (iso_stream->max_sdu_c_to_p > 0){ 3111 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3112 } else { 3113 emit_cis_created = true; 3114 } 3115 break; 3116 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3117 emit_cis_created = true; 3118 break; 3119 default: 3120 break; 3121 } 3122 if (emit_cis_created){ 3123 hci_cis_handle_created(iso_stream, status); 3124 } 3125 } 3126 } else { 3127 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3128 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3129 if (cig != NULL) { 3130 // emit cis created if all ISO Paths have been created 3131 // assume we are central 3132 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3133 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3134 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3135 // if outgoing has been setup, or incoming was setup but outgoing not required 3136 if ((cis_direction == 1) || (outgoing_needed == false)){ 3137 // lookup iso stream by cig/cis 3138 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3139 while (btstack_linked_list_iterator_has_next(&it)) { 3140 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3141 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3142 hci_cis_handle_created(iso_stream, status); 3143 } 3144 } 3145 } 3146 // next state 3147 cig->state_vars.next_cis++; 3148 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3149 } 3150 } 3151 } 3152 break; 3153 } 3154 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3155 // lookup BIG by state 3156 btstack_linked_list_iterator_t it; 3157 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3158 while (btstack_linked_list_iterator_has_next(&it)) { 3159 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3160 uint8_t big_handle = big_sync->big_handle; 3161 switch (big_sync->state){ 3162 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3163 btstack_linked_list_iterator_remove(&it); 3164 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3165 return; 3166 default: 3167 btstack_linked_list_iterator_remove(&it); 3168 hci_emit_big_sync_stopped(big_handle); 3169 return; 3170 } 3171 } 3172 break; 3173 } 3174 #endif 3175 #endif 3176 default: 3177 break; 3178 } 3179 } 3180 3181 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3182 UNUSED(size); 3183 3184 // get num cmd packets - limit to 1 to reduce complexity 3185 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3186 3187 // get opcode and command status 3188 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3189 3190 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3191 uint8_t status = hci_event_command_status_get_status(packet); 3192 #endif 3193 3194 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3195 bd_addr_type_t addr_type; 3196 bd_addr_t addr; 3197 #endif 3198 3199 switch (opcode){ 3200 #ifdef ENABLE_CLASSIC 3201 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3202 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3203 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3204 #endif 3205 #ifdef ENABLE_LE_CENTRAL 3206 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3207 #endif 3208 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3209 addr_type = hci_stack->outgoing_addr_type; 3210 memcpy(addr, hci_stack->outgoing_addr, 6); 3211 3212 // reset outgoing address info 3213 memset(hci_stack->outgoing_addr, 0, 6); 3214 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3215 3216 // on error 3217 if (status != ERROR_CODE_SUCCESS){ 3218 #ifdef ENABLE_LE_CENTRAL 3219 if (hci_is_le_connection_type(addr_type)){ 3220 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3221 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3222 } 3223 #endif 3224 // error => outgoing connection failed 3225 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3226 if (conn != NULL){ 3227 hci_handle_connection_failed(conn, status); 3228 } 3229 } 3230 break; 3231 #endif 3232 #ifdef ENABLE_CLASSIC 3233 case HCI_OPCODE_HCI_INQUIRY: 3234 if (status == ERROR_CODE_SUCCESS) { 3235 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3236 } else { 3237 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3238 } 3239 break; 3240 #endif 3241 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3242 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3243 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3244 if (status == ERROR_CODE_SUCCESS){ 3245 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3246 } else { 3247 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3248 } 3249 break; 3250 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3251 default: 3252 break; 3253 } 3254 } 3255 3256 #ifdef ENABLE_BLE 3257 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * generic_event) { 3258 generic_event[0] = HCI_EVENT_META_GAP; 3259 generic_event[1] = sizeof(generic_event) - 2; 3260 generic_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3261 switch (hci_event[2]){ 3262 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3263 memcpy(&generic_event[3], &hci_event[3], 11); 3264 memset(&generic_event[14], 0, 12); 3265 memcpy(&generic_event[26], &hci_event[14], 7); 3266 memset(&generic_event[33], 0xff, 3); 3267 break; 3268 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3269 memcpy(&generic_event[3], &hci_event[3], 30); 3270 memset(&generic_event[33], 0xff, 3); 3271 break; 3272 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3273 memcpy(&generic_event[3], &hci_event[3], 33); 3274 break; 3275 default: 3276 btstack_unreachable(); 3277 break; 3278 } 3279 } 3280 3281 static void event_handle_le_connection_complete(const uint8_t * hci_event){ 3282 bd_addr_t addr; 3283 bd_addr_type_t addr_type; 3284 hci_connection_t * conn; 3285 3286 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3287 uint8_t gap_event[36]; 3288 hci_create_gap_connection_complete_event(hci_event, gap_event); 3289 3290 // read fields 3291 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3292 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3293 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3294 3295 // Connection management 3296 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3297 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3298 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3299 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3300 3301 #ifdef ENABLE_LE_CENTRAL 3302 // handle error: error is reported only to the initiator -> outgoing connection 3303 if (status){ 3304 3305 // handle cancelled outgoing connection 3306 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3307 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3308 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3309 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3310 // reset state 3311 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3312 // get outgoing connection conn struct for direct connect 3313 conn = gap_get_outgoing_connection(); 3314 } 3315 3316 // outgoing le connection establishment is done 3317 if (conn){ 3318 // remove entry 3319 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3320 btstack_memory_hci_connection_free( conn ); 3321 } 3322 return; 3323 } 3324 #endif 3325 3326 // on success, both hosts receive connection complete event 3327 if (role == HCI_ROLE_MASTER){ 3328 #ifdef ENABLE_LE_CENTRAL 3329 // if we're master on an le connection, it was an outgoing connection and we're done with it 3330 // note: no hci_connection_t object exists yet for connect with whitelist 3331 if (hci_is_le_connection_type(addr_type)){ 3332 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3333 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3334 } 3335 #endif 3336 } else { 3337 #ifdef ENABLE_LE_PERIPHERAL 3338 // if we're slave, it was an incoming connection, advertisements have stopped 3339 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3340 #endif 3341 } 3342 3343 // LE connections are auto-accepted, so just create a connection if there isn't one already 3344 if (!conn){ 3345 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3346 } 3347 3348 // no memory, sorry. 3349 if (!conn){ 3350 return; 3351 } 3352 3353 conn->state = OPEN; 3354 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3355 conn->le_connection_interval = conn_interval; 3356 3357 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3358 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3359 3360 #ifdef ENABLE_LE_PERIPHERAL 3361 if (role == HCI_ROLE_SLAVE){ 3362 hci_update_advertisements_enabled_for_current_roles(); 3363 } 3364 #endif 3365 3366 // init unenhanced att bearer mtu 3367 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3368 conn->att_connection.mtu_exchanged = false; 3369 3370 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3371 3372 // restart timer 3373 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3374 // btstack_run_loop_add_timer(&conn->timeout); 3375 3376 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3377 3378 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3379 hci_emit_event(gap_event, sizeof(gap_event), 1); 3380 3381 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3382 hci_emit_nr_connections_changed(); 3383 } 3384 #endif 3385 3386 #ifdef ENABLE_CLASSIC 3387 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){ 3388 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3389 // LEVEL_4 is tested by l2cap 3390 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3391 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3392 if (level >= LEVEL_3){ 3393 // MITM not possible without keyboard or display 3394 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3395 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3396 3397 // MITM possible if one side has keyboard and the other has keyboard or display 3398 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3399 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3400 3401 // MITM not possible if one side has only display and other side has no keyboard 3402 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3403 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3404 } 3405 // LEVEL 2 requires SSP, which is a given 3406 return true; 3407 } 3408 3409 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3410 // get requested security level 3411 gap_security_level_t requested_security_level = conn->requested_security_level; 3412 if (hci_stack->gap_secure_connections_only_mode){ 3413 requested_security_level = LEVEL_4; 3414 } 3415 3416 // assess security: LEVEL 4 requires SC 3417 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3418 if ((requested_security_level == LEVEL_4) && 3419 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3420 !hci_remote_sc_enabled(conn)){ 3421 log_info("Level 4 required, but SC not supported -> abort"); 3422 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3423 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3424 return; 3425 } 3426 3427 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3428 // - GAP/MOD/NBON/BV-02-C 3429 // - GAP/DM/NBON/BV-01-C 3430 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3431 switch (conn->io_cap_response_auth_req){ 3432 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3433 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3434 if (hci_stack->bondable == false){ 3435 log_info("Dedicated vs. non-bondable -> abort"); 3436 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3437 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3438 return; 3439 } 3440 default: 3441 break; 3442 } 3443 } 3444 3445 // assess security based on io capabilities 3446 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3447 // responder: fully validate io caps of both sides as well as OOB data 3448 bool security_possible = false; 3449 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3450 3451 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3452 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3453 // so we merge the OOB data availability 3454 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3455 if (conn->classic_oob_c_192 != NULL){ 3456 have_oob_data |= 1; 3457 } 3458 if (conn->classic_oob_c_256 != NULL){ 3459 have_oob_data |= 2; 3460 } 3461 // for up to Level 3, either P-192 as well as P-256 will do 3462 // 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 3463 // if remote does not SC, we should not receive P-256 data either 3464 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3465 security_possible = true; 3466 } 3467 // for Level 4, P-256 is needed 3468 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3469 security_possible = true; 3470 } 3471 #endif 3472 3473 if (security_possible == false){ 3474 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3475 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3476 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3477 return; 3478 } 3479 } else { 3480 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3481 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3482 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3483 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3484 log_info("Level 3+ required, but no input/output -> abort"); 3485 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3486 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3487 return; 3488 } 3489 #endif 3490 #endif 3491 } 3492 3493 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3494 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3495 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3496 } else { 3497 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3498 } 3499 #endif 3500 } 3501 3502 #endif 3503 3504 static void event_handler(uint8_t *packet, uint16_t size){ 3505 3506 uint16_t event_length = packet[1]; 3507 3508 // assert packet is complete 3509 if (size != (event_length + 2u)){ 3510 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3511 return; 3512 } 3513 3514 hci_con_handle_t handle; 3515 hci_connection_t * conn; 3516 int i; 3517 3518 #ifdef ENABLE_CLASSIC 3519 hci_link_type_t link_type; 3520 bd_addr_t addr; 3521 bd_addr_type_t addr_type; 3522 #endif 3523 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3524 hci_iso_stream_t * iso_stream; 3525 le_audio_big_t * big; 3526 le_audio_big_sync_t * big_sync; 3527 #endif 3528 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3529 btstack_linked_list_iterator_t it; 3530 #endif 3531 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3532 uint8_t advertising_handle; 3533 #endif 3534 3535 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3536 3537 switch (hci_event_packet_get_type(packet)) { 3538 3539 case HCI_EVENT_COMMAND_COMPLETE: 3540 handle_command_complete_event(packet, size); 3541 break; 3542 3543 case HCI_EVENT_COMMAND_STATUS: 3544 handle_command_status_event(packet, size); 3545 break; 3546 3547 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3548 if (size < 3) return; 3549 uint16_t num_handles = packet[2]; 3550 if (size != (3u + num_handles * 4u)) return; 3551 #ifdef ENABLE_CLASSIC 3552 bool notify_sco = false; 3553 #endif 3554 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3555 bool notify_iso = false; 3556 #endif 3557 uint16_t offset = 3; 3558 for (i=0; i<num_handles;i++){ 3559 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3560 offset += 2u; 3561 uint16_t num_packets = little_endian_read_16(packet, offset); 3562 offset += 2u; 3563 3564 conn = hci_connection_for_handle(handle); 3565 if (conn != NULL) { 3566 3567 if (conn->num_packets_sent >= num_packets) { 3568 conn->num_packets_sent -= num_packets; 3569 } else { 3570 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3571 conn->num_packets_sent = 0; 3572 } 3573 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3574 #ifdef ENABLE_CLASSIC 3575 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3576 notify_sco = true; 3577 } 3578 #endif 3579 } 3580 3581 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3582 hci_controller_dump_packets(); 3583 #endif 3584 3585 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3586 if (conn == NULL){ 3587 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3588 if (iso_stream != NULL){ 3589 if (iso_stream->num_packets_sent >= num_packets) { 3590 iso_stream->num_packets_sent -= num_packets; 3591 } else { 3592 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3593 iso_stream->num_packets_sent = 0; 3594 } 3595 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3596 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3597 if (big != NULL){ 3598 big->num_completed_timestamp_current_valid = true; 3599 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3600 } 3601 } 3602 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3603 num_packets, handle, iso_stream->num_packets_sent); 3604 notify_iso = true; 3605 } 3606 } 3607 #endif 3608 } 3609 3610 #ifdef ENABLE_CLASSIC 3611 if (notify_sco){ 3612 hci_notify_if_sco_can_send_now(); 3613 } 3614 #endif 3615 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3616 if (notify_iso){ 3617 hci_iso_notify_can_send_now(); 3618 } 3619 #endif 3620 break; 3621 } 3622 3623 #ifdef ENABLE_CLASSIC 3624 case HCI_EVENT_FLUSH_OCCURRED: 3625 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3626 handle = hci_event_flush_occurred_get_handle(packet); 3627 conn = hci_connection_for_handle(handle); 3628 if (conn) { 3629 log_info("Flush occurred, disconnect 0x%04x", handle); 3630 conn->state = SEND_DISCONNECT; 3631 } 3632 break; 3633 3634 case HCI_EVENT_INQUIRY_COMPLETE: 3635 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3636 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3637 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3638 hci_emit_event(event, sizeof(event), 1); 3639 } 3640 break; 3641 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3642 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3643 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3644 } 3645 break; 3646 case HCI_EVENT_CONNECTION_REQUEST: 3647 reverse_bd_addr(&packet[2], addr); 3648 link_type = (hci_link_type_t) packet[11]; 3649 3650 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3651 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3652 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3653 bd_addr_copy(hci_stack->decline_addr, addr); 3654 break; 3655 } 3656 3657 if (hci_stack->gap_classic_accept_callback != NULL){ 3658 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3659 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3660 bd_addr_copy(hci_stack->decline_addr, addr); 3661 break; 3662 } 3663 } 3664 3665 // TODO: eval COD 8-10 3666 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3667 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3668 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3669 if (!conn) { 3670 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3671 } 3672 if (!conn) { 3673 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3674 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3675 bd_addr_copy(hci_stack->decline_addr, addr); 3676 hci_run(); 3677 // avoid event to higher layer 3678 return; 3679 } 3680 conn->state = RECEIVED_CONNECTION_REQUEST; 3681 // store info about eSCO 3682 if (link_type == HCI_LINK_TYPE_ESCO){ 3683 conn->remote_supported_features[0] |= 1; 3684 } 3685 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3686 if (addr_type == BD_ADDR_TYPE_SCO){ 3687 hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3688 btstack_assert(acl_conn != NULL); 3689 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3690 } 3691 hci_run(); 3692 break; 3693 3694 case HCI_EVENT_CONNECTION_COMPLETE: 3695 // Connection management 3696 reverse_bd_addr(&packet[5], addr); 3697 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3698 addr_type = BD_ADDR_TYPE_ACL; 3699 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3700 if (conn) { 3701 switch (conn->state){ 3702 // expected states 3703 case ACCEPTED_CONNECTION_REQUEST: 3704 case SENT_CREATE_CONNECTION: 3705 break; 3706 // unexpected state -> ignore 3707 default: 3708 // don't forward event to app 3709 return; 3710 } 3711 if (!packet[2]){ 3712 conn->state = OPEN; 3713 conn->con_handle = little_endian_read_16(packet, 3); 3714 3715 // trigger write supervision timeout if we're master 3716 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3717 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3718 } 3719 3720 // trigger write automatic flush timeout 3721 if (hci_stack->automatic_flush_timeout != 0){ 3722 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3723 } 3724 3725 // restart timer 3726 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3727 btstack_run_loop_add_timer(&conn->timeout); 3728 3729 // trigger remote features for dedicated bonding 3730 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3731 hci_trigger_remote_features_for_connection(conn); 3732 } 3733 3734 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3735 3736 hci_emit_nr_connections_changed(); 3737 } else { 3738 // connection failed 3739 hci_handle_connection_failed(conn, packet[2]); 3740 } 3741 } 3742 break; 3743 3744 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3745 reverse_bd_addr(&packet[5], addr); 3746 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3747 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3748 btstack_assert(conn != NULL); 3749 3750 if (packet[2] != ERROR_CODE_SUCCESS){ 3751 // connection failed, remove entry 3752 hci_handle_connection_failed(conn, packet[2]); 3753 break; 3754 } 3755 3756 conn->state = OPEN; 3757 conn->con_handle = little_endian_read_16(packet, 3); 3758 3759 // update sco payload length for eSCO connections 3760 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3761 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3762 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3763 } 3764 3765 #ifdef ENABLE_SCO_OVER_HCI 3766 // update SCO 3767 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3768 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3769 } 3770 // trigger can send now 3771 if (hci_have_usb_transport()){ 3772 hci_stack->sco_can_send_now = true; 3773 } 3774 3775 // setup implict sco flow control 3776 conn->sco_tx_ready = 0; 3777 conn->sco_tx_active = 0; 3778 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3779 3780 #endif 3781 #ifdef HAVE_SCO_TRANSPORT 3782 // configure sco transport 3783 if (hci_stack->sco_transport != NULL){ 3784 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3785 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3786 } 3787 #endif 3788 break; 3789 3790 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3791 handle = little_endian_read_16(packet, 3); 3792 conn = hci_connection_for_handle(handle); 3793 if (!conn) break; 3794 if (!packet[2]){ 3795 const uint8_t * features = &packet[5]; 3796 hci_handle_remote_features_page_0(conn, features); 3797 3798 // read extended features if possible 3799 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3800 && ((conn->remote_supported_features[0] & 2) != 0)) { 3801 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3802 break; 3803 } 3804 } 3805 hci_handle_remote_features_received(conn); 3806 break; 3807 3808 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3809 handle = little_endian_read_16(packet, 3); 3810 conn = hci_connection_for_handle(handle); 3811 if (!conn) break; 3812 // status = ok, page = 1 3813 if (!packet[2]) { 3814 uint8_t page_number = packet[5]; 3815 uint8_t maximum_page_number = packet[6]; 3816 const uint8_t * features = &packet[7]; 3817 bool done = false; 3818 switch (page_number){ 3819 case 1: 3820 hci_handle_remote_features_page_1(conn, features); 3821 if (maximum_page_number >= 2){ 3822 // get Secure Connections (Controller) from Page 2 if available 3823 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3824 } else { 3825 // otherwise, assume SC (Controller) == SC (Host) 3826 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3827 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3828 } 3829 done = true; 3830 } 3831 break; 3832 case 2: 3833 hci_handle_remote_features_page_2(conn, features); 3834 done = true; 3835 break; 3836 default: 3837 break; 3838 } 3839 if (!done) break; 3840 } 3841 hci_handle_remote_features_received(conn); 3842 break; 3843 3844 case HCI_EVENT_LINK_KEY_REQUEST: 3845 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3846 hci_event_link_key_request_get_bd_addr(packet, addr); 3847 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3848 if (!conn) break; 3849 3850 // lookup link key in db if not cached 3851 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3852 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3853 } 3854 3855 // response sent by hci_run() 3856 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3857 #endif 3858 break; 3859 3860 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3861 hci_event_link_key_request_get_bd_addr(packet, addr); 3862 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3863 if (!conn) break; 3864 3865 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3866 3867 // CVE-2020-26555: ignore NULL link key 3868 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3869 if (btstack_is_null(&packet[8], 16)) break; 3870 3871 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3872 // Change Connection Encryption keeps link key type 3873 if (link_key_type != CHANGED_COMBINATION_KEY){ 3874 conn->link_key_type = link_key_type; 3875 } 3876 3877 // cache link key. link keys stored in little-endian format for legacy reasons 3878 memcpy(&conn->link_key, &packet[8], 16); 3879 3880 // only store link key: 3881 // - if bondable enabled 3882 if (hci_stack->bondable == false) break; 3883 // - if security level sufficient 3884 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3885 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3886 break; 3887 } 3888 3889 case HCI_EVENT_PIN_CODE_REQUEST: 3890 hci_event_pin_code_request_get_bd_addr(packet, addr); 3891 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3892 if (!conn) break; 3893 3894 hci_pairing_started(conn, false); 3895 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3896 if (!hci_stack->bondable ){ 3897 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3898 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3899 hci_run(); 3900 return; 3901 } 3902 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3903 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3904 log_info("Level 4 required, but SC not supported -> abort"); 3905 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3906 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3907 hci_run(); 3908 return; 3909 } 3910 break; 3911 3912 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3913 hci_event_io_capability_response_get_bd_addr(packet, addr); 3914 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3915 if (!conn) break; 3916 3917 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3918 hci_pairing_started(conn, true); 3919 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3920 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3921 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3922 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3923 #endif 3924 break; 3925 3926 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3927 hci_event_io_capability_response_get_bd_addr(packet, addr); 3928 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3929 if (!conn) break; 3930 3931 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3932 hci_connection_timestamp(conn); 3933 hci_pairing_started(conn, true); 3934 break; 3935 3936 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3937 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3938 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3939 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3940 if (!conn) break; 3941 3942 hci_connection_timestamp(conn); 3943 3944 hci_pairing_started(conn, true); 3945 3946 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3947 break; 3948 #endif 3949 3950 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3951 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3952 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3953 if (!conn) break; 3954 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3955 if (hci_stack->ssp_auto_accept){ 3956 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3957 }; 3958 } else { 3959 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3960 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3961 // don't forward event to app 3962 hci_run(); 3963 return; 3964 } 3965 break; 3966 3967 case HCI_EVENT_USER_PASSKEY_REQUEST: 3968 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3969 if (hci_stack->ssp_auto_accept){ 3970 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3971 }; 3972 break; 3973 3974 case HCI_EVENT_MODE_CHANGE: 3975 handle = hci_event_mode_change_get_handle(packet); 3976 conn = hci_connection_for_handle(handle); 3977 if (!conn) break; 3978 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3979 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3980 break; 3981 #endif 3982 3983 case HCI_EVENT_ENCRYPTION_CHANGE: 3984 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3985 handle = hci_event_encryption_change_get_connection_handle(packet); 3986 conn = hci_connection_for_handle(handle); 3987 if (!conn) break; 3988 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3989 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3990 if (encryption_enabled){ 3991 if (hci_is_le_connection(conn)){ 3992 // For LE, we accept connection as encrypted 3993 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3994 } 3995 #ifdef ENABLE_CLASSIC 3996 else { 3997 3998 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3999 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4000 bool connected_uses_aes_ccm = encryption_enabled == 2; 4001 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4002 #ifdef ENABLE_TESTING_SUPPORT 4003 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4004 // - GAP/SEC/SEM/BI-31-C 4005 // - GAP/SEC/SEM/BI-32-C 4006 // - GAP/SEC/SEM/BI-33-C 4007 4008 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4009 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4010 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4011 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4012 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4013 } 4014 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4015 conn->link_key_type, new_link_key_type); 4016 conn->link_key_type = new_link_key_type; 4017 #else 4018 log_info("SC during pairing, but only E0 now -> abort"); 4019 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4020 break; 4021 #endif 4022 } 4023 4024 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4025 if (connected_uses_aes_ccm){ 4026 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4027 } 4028 4029 #ifdef ENABLE_TESTING_SUPPORT 4030 // work around for issue with PTS dongle 4031 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4032 #endif 4033 // validate encryption key size 4034 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4035 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4036 // already got encryption key size 4037 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4038 } else { 4039 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4040 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4041 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4042 } else { 4043 // if not, pretend everything is perfect 4044 hci_handle_read_encryption_key_size_complete(conn, 16); 4045 } 4046 } 4047 } 4048 #endif 4049 } else { 4050 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4051 } 4052 } else { 4053 #ifdef ENABLE_CLASSIC 4054 if (!hci_is_le_connection(conn)){ 4055 uint8_t status = hci_event_encryption_change_get_status(packet); 4056 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4057 conn->bonding_flags &= ~BONDING_DEDICATED; 4058 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4059 conn->bonding_status = status; 4060 } 4061 // trigger security update -> level 0 4062 hci_handle_mutual_authentication_completed(conn); 4063 } 4064 #endif 4065 } 4066 4067 break; 4068 4069 #ifdef ENABLE_CLASSIC 4070 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4071 handle = hci_event_authentication_complete_get_connection_handle(packet); 4072 conn = hci_connection_for_handle(handle); 4073 if (!conn) break; 4074 4075 // clear authentication active flag 4076 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4077 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4078 4079 // authenticated only if auth status == 0 4080 if (hci_event_authentication_complete_get_status(packet) == 0){ 4081 // authenticated 4082 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4083 4084 // If not already encrypted, start encryption 4085 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4086 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4087 break; 4088 } 4089 } 4090 4091 // emit updated security level (will be 0 if not authenticated) 4092 hci_handle_mutual_authentication_completed(conn); 4093 break; 4094 4095 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4096 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4097 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4098 if (!conn) break; 4099 4100 // treat successfully paired connection as authenticated 4101 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4102 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4103 } 4104 4105 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4106 break; 4107 #endif 4108 4109 // HCI_EVENT_DISCONNECTION_COMPLETE 4110 // has been split, to first notify stack before shutting connection down 4111 // see end of function, too. 4112 case HCI_EVENT_DISCONNECTION_COMPLETE: 4113 if (packet[2]) break; // status != 0 4114 handle = little_endian_read_16(packet, 3); 4115 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4116 if (hci_stack->acl_fragmentation_total_size > 0u) { 4117 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4118 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4119 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4120 hci_stack->acl_fragmentation_total_size = 0; 4121 hci_stack->acl_fragmentation_pos = 0; 4122 if (release_buffer){ 4123 hci_release_packet_buffer(); 4124 } 4125 } 4126 } 4127 4128 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4129 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4130 if (hci_stack->iso_fragmentation_total_size > 0u) { 4131 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4132 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4133 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4134 hci_stack->iso_fragmentation_total_size = 0; 4135 hci_stack->iso_fragmentation_pos = 0; 4136 if (release_buffer){ 4137 hci_release_packet_buffer(); 4138 } 4139 } 4140 } 4141 4142 // finalize iso stream for CIS handle 4143 iso_stream = hci_iso_stream_for_con_handle(handle); 4144 if (iso_stream != NULL){ 4145 hci_iso_stream_finalize(iso_stream); 4146 break; 4147 } 4148 4149 // finalize iso stream(s) for ACL handle 4150 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4151 while (btstack_linked_list_iterator_has_next(&it)){ 4152 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4153 if (iso_stream->acl_handle == handle ) { 4154 hci_iso_stream_finalize(iso_stream); 4155 } 4156 } 4157 #endif 4158 4159 conn = hci_connection_for_handle(handle); 4160 if (!conn) break; 4161 #ifdef ENABLE_CLASSIC 4162 // pairing failed if it was ongoing 4163 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4164 #endif 4165 4166 // emit dedicatd bonding event 4167 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4168 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4169 } 4170 4171 // mark connection for shutdown, stop timers, reset state 4172 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4173 hci_connection_stop_timer(conn); 4174 hci_connection_init(conn); 4175 4176 #ifdef ENABLE_BLE 4177 #ifdef ENABLE_LE_PERIPHERAL 4178 // re-enable advertisements for le connections if active 4179 if (hci_is_le_connection(conn)){ 4180 hci_update_advertisements_enabled_for_current_roles(); 4181 } 4182 #endif 4183 #endif 4184 break; 4185 4186 case HCI_EVENT_HARDWARE_ERROR: 4187 log_error("Hardware Error: 0x%02x", packet[2]); 4188 if (hci_stack->hardware_error_callback){ 4189 (*hci_stack->hardware_error_callback)(packet[2]); 4190 } else { 4191 // if no special requests, just reboot stack 4192 hci_power_control_off(); 4193 hci_power_control_on(); 4194 } 4195 break; 4196 4197 #ifdef ENABLE_CLASSIC 4198 case HCI_EVENT_ROLE_CHANGE: 4199 if (packet[2]) break; // status != 0 4200 reverse_bd_addr(&packet[3], addr); 4201 addr_type = BD_ADDR_TYPE_ACL; 4202 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4203 if (!conn) break; 4204 conn->role = (hci_role_t) packet[9]; 4205 break; 4206 #endif 4207 4208 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4209 // release packet buffer only for asynchronous transport and if there are not further fragments 4210 if (hci_transport_synchronous()) { 4211 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4212 return; // instead of break: to avoid re-entering hci_run() 4213 } 4214 hci_stack->acl_fragmentation_tx_active = 0; 4215 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4216 hci_stack->iso_fragmentation_tx_active = 0; 4217 if (hci_stack->iso_fragmentation_total_size) break; 4218 #endif 4219 if (hci_stack->acl_fragmentation_total_size) break; 4220 hci_release_packet_buffer(); 4221 4222 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4223 hci_iso_notify_can_send_now(); 4224 #endif 4225 // L2CAP receives this event via the hci_emit_event below 4226 4227 #ifdef ENABLE_CLASSIC 4228 // For SCO, we do the can_send_now_check here 4229 hci_notify_if_sco_can_send_now(); 4230 #endif 4231 break; 4232 4233 #ifdef ENABLE_CLASSIC 4234 case HCI_EVENT_SCO_CAN_SEND_NOW: 4235 // For SCO, we do the can_send_now_check here 4236 hci_stack->sco_can_send_now = true; 4237 hci_notify_if_sco_can_send_now(); 4238 return; 4239 4240 // explode inquriy results for easier consumption 4241 case HCI_EVENT_INQUIRY_RESULT: 4242 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4243 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4244 gap_inquiry_explode(packet, size); 4245 break; 4246 #endif 4247 4248 #ifdef ENABLE_BLE 4249 case HCI_EVENT_LE_META: 4250 switch (packet[2]){ 4251 #ifdef ENABLE_LE_CENTRAL 4252 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4253 if (!hci_stack->le_scanning_enabled) break; 4254 le_handle_advertisement_report(packet, size); 4255 break; 4256 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4257 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4258 if (!hci_stack->le_scanning_enabled) break; 4259 le_handle_extended_advertisement_report(packet, size); 4260 break; 4261 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4262 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4263 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4264 break; 4265 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4266 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4267 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4268 while (btstack_linked_list_iterator_has_next(&it)) { 4269 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4270 if (advertising_set->advertising_handle == advertising_handle){ 4271 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4272 } 4273 } 4274 break; 4275 #endif 4276 #endif 4277 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4278 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4279 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4280 event_handle_le_connection_complete(packet); 4281 break; 4282 4283 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4284 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4285 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4286 conn = hci_connection_for_handle(handle); 4287 if (!conn) break; 4288 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4289 break; 4290 4291 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4292 // connection 4293 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4294 conn = hci_connection_for_handle(handle); 4295 if (conn) { 4296 // read arguments 4297 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4298 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4299 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4300 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4301 4302 // validate against current connection parameter range 4303 le_connection_parameter_range_t existing_range; 4304 gap_get_connection_parameter_range(&existing_range); 4305 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4306 if (update_parameter){ 4307 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4308 conn->le_conn_interval_min = le_conn_interval_min; 4309 conn->le_conn_interval_max = le_conn_interval_max; 4310 conn->le_conn_latency = le_conn_latency; 4311 conn->le_supervision_timeout = le_supervision_timeout; 4312 } else { 4313 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4314 } 4315 } 4316 break; 4317 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4318 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4319 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4320 conn = hci_connection_for_handle(handle); 4321 if (conn) { 4322 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4323 } 4324 break; 4325 #endif 4326 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4327 case HCI_SUBEVENT_LE_CIS_REQUEST: 4328 // incoming CIS request, allocate iso stream object and cache metadata 4329 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4330 hci_subevent_le_cis_request_get_cig_id(packet), 4331 hci_subevent_le_cis_request_get_cis_id(packet)); 4332 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4333 if (iso_stream != NULL){ 4334 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4335 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4336 } 4337 break; 4338 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4339 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4340 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4341 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4342 iso_stream = hci_iso_stream_for_con_handle(handle); 4343 btstack_assert(iso_stream != NULL); 4344 // track connection info 4345 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4346 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4347 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4348 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4349 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4350 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4351 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4352 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4353 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4354 // CIS Accept by Peripheral 4355 if (status == ERROR_CODE_SUCCESS){ 4356 if (iso_stream->max_sdu_p_to_c > 0){ 4357 // we're peripheral and we will send data 4358 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4359 } else { 4360 // we're peripheral and we will only receive data 4361 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4362 } 4363 } else { 4364 hci_cis_handle_created(iso_stream, status); 4365 } 4366 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4367 } else { 4368 // CIG Setup by Central 4369 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4370 btstack_assert(cig != NULL); 4371 // update iso stream state 4372 if (status == ERROR_CODE_SUCCESS){ 4373 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4374 } else { 4375 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4376 } 4377 // update cig state 4378 uint8_t i; 4379 for (i=0;i<cig->num_cis;i++){ 4380 if (cig->cis_con_handles[i] == handle){ 4381 cig->cis_setup_active[i] = false; 4382 if (status == ERROR_CODE_SUCCESS){ 4383 cig->cis_established[i] = true; 4384 } else { 4385 hci_cis_handle_created(iso_stream, status); 4386 } 4387 } 4388 } 4389 4390 // trigger iso path setup if complete 4391 bool cis_setup_active = false; 4392 for (i=0;i<cig->num_cis;i++){ 4393 cis_setup_active |= cig->cis_setup_active[i]; 4394 } 4395 if (cis_setup_active == false){ 4396 cig->state_vars.next_cis = 0; 4397 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4398 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4399 } 4400 } 4401 } 4402 break; 4403 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4404 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4405 big = hci_big_for_handle(packet[4]); 4406 if (big != NULL){ 4407 uint8_t status = packet[3]; 4408 if (status == ERROR_CODE_SUCCESS){ 4409 // store bis_con_handles and trigger iso path setup 4410 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4411 uint8_t i; 4412 for (i=0;i<num_bis;i++){ 4413 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4414 big->bis_con_handles[i] = bis_handle; 4415 // assign bis handle 4416 btstack_linked_list_iterator_t it; 4417 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4418 while (btstack_linked_list_iterator_has_next(&it)){ 4419 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4420 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4421 (iso_stream->group_id == big->big_handle)){ 4422 iso_stream->cis_handle = bis_handle; 4423 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4424 break; 4425 } 4426 } 4427 } 4428 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4429 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4430 big->state_vars.next_bis = 0; 4431 } 4432 } else { 4433 // create BIG failed or has been stopped by us 4434 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4435 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4436 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4437 hci_emit_big_created(big, status); 4438 } else { 4439 hci_emit_big_terminated(big); 4440 } 4441 } 4442 } 4443 break; 4444 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4445 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4446 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4447 if (big != NULL){ 4448 // finalize associated ISO streams 4449 btstack_linked_list_iterator_t it; 4450 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4451 while (btstack_linked_list_iterator_has_next(&it)){ 4452 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4453 if (iso_stream->group_id == big->big_handle){ 4454 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4455 btstack_linked_list_iterator_remove(&it); 4456 btstack_memory_hci_iso_stream_free(iso_stream); 4457 } 4458 } 4459 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4460 switch (big->state){ 4461 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4462 hci_emit_big_created(big, big->state_vars.status); 4463 break; 4464 default: 4465 hci_emit_big_terminated(big); 4466 break; 4467 } 4468 } 4469 break; 4470 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4471 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4472 big_sync = hci_big_sync_for_handle(packet[4]); 4473 if (big_sync != NULL){ 4474 uint8_t status = packet[3]; 4475 uint8_t big_handle = packet[4]; 4476 if (status == ERROR_CODE_SUCCESS){ 4477 // store bis_con_handles and trigger iso path setup 4478 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4479 uint8_t i; 4480 for (i=0;i<num_bis;i++){ 4481 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4482 } 4483 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4484 // trigger iso path setup 4485 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4486 big_sync->state_vars.next_bis = 0; 4487 } 4488 } else { 4489 // create BIG Sync failed or has been stopped by us 4490 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4491 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4492 hci_emit_big_sync_created(big_sync, status); 4493 } else { 4494 hci_emit_big_sync_stopped(big_handle); 4495 } 4496 } 4497 } 4498 break; 4499 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4500 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4501 big_sync = hci_big_sync_for_handle(packet[4]); 4502 if (big_sync != NULL){ 4503 uint8_t big_handle = packet[4]; 4504 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4505 hci_emit_big_sync_stopped(big_handle); 4506 } 4507 break; 4508 #endif 4509 default: 4510 break; 4511 } 4512 break; 4513 #endif 4514 case HCI_EVENT_VENDOR_SPECIFIC: 4515 // Vendor specific commands often create vendor specific event instead of num completed packets 4516 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4517 switch (hci_stack->manufacturer){ 4518 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4519 hci_stack->num_cmd_packets = 1; 4520 break; 4521 default: 4522 break; 4523 } 4524 break; 4525 default: 4526 break; 4527 } 4528 4529 handle_event_for_current_stack_state(packet, size); 4530 4531 // notify upper stack 4532 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4533 4534 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4535 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4536 handle = little_endian_read_16(packet, 3); 4537 hci_connection_t * aConn = hci_connection_for_handle(handle); 4538 // discard connection if app did not trigger a reconnect in the event handler 4539 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4540 hci_shutdown_connection(aConn); 4541 } 4542 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4543 hci_controller_dump_packets(); 4544 #endif 4545 } 4546 4547 // execute main loop 4548 hci_run(); 4549 } 4550 4551 #ifdef ENABLE_CLASSIC 4552 4553 static void sco_handler(uint8_t * packet, uint16_t size){ 4554 // lookup connection struct 4555 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4556 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4557 if (!conn) return; 4558 4559 #ifdef ENABLE_SCO_OVER_HCI 4560 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4561 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4562 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4563 packet[2] = 0x3c; 4564 memmove(&packet[3], &packet[23], 63); 4565 size = 63; 4566 } 4567 } 4568 4569 if (hci_have_usb_transport()){ 4570 // Nothing to do 4571 } else { 4572 // 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); 4573 if (hci_stack->synchronous_flow_control_enabled == 0){ 4574 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4575 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4576 if (conn->sco_tx_active == 0){ 4577 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4578 conn->sco_tx_active = 1; 4579 conn->sco_tx_ready = max_sco_packets; 4580 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4581 hci_notify_if_sco_can_send_now(); 4582 } 4583 } else { 4584 if (conn->sco_tx_ready < max_sco_packets){ 4585 conn->sco_tx_ready++; 4586 } 4587 hci_notify_if_sco_can_send_now(); 4588 } 4589 } 4590 } 4591 #endif 4592 4593 // deliver to app 4594 if (hci_stack->sco_packet_handler) { 4595 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4596 } 4597 4598 #ifdef HAVE_SCO_TRANSPORT 4599 // We can send one packet for each received packet 4600 conn->sco_tx_ready++; 4601 hci_notify_if_sco_can_send_now(); 4602 #endif 4603 4604 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4605 conn->num_packets_completed++; 4606 hci_stack->host_completed_packets = 1; 4607 hci_run(); 4608 #endif 4609 } 4610 #endif 4611 4612 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4613 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4614 // propagate ISO packets received as ACL 4615 hci_iso_stream_t * iso_stream; 4616 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4617 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4618 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4619 if (iso_stream != NULL){ 4620 packet_type = HCI_ISO_DATA_PACKET; 4621 } 4622 } 4623 #endif 4624 4625 hci_dump_packet(packet_type, 1, packet, size); 4626 switch (packet_type) { 4627 case HCI_EVENT_PACKET: 4628 event_handler(packet, size); 4629 break; 4630 case HCI_ACL_DATA_PACKET: 4631 acl_handler(packet, size); 4632 break; 4633 #ifdef ENABLE_CLASSIC 4634 case HCI_SCO_DATA_PACKET: 4635 sco_handler(packet, size); 4636 break; 4637 #endif 4638 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4639 case HCI_ISO_DATA_PACKET: 4640 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4641 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4642 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4643 } 4644 hci_iso_packet_handler(iso_stream, packet, size); 4645 break; 4646 #endif 4647 default: 4648 break; 4649 } 4650 } 4651 4652 /** 4653 * @brief Add event packet handler. 4654 */ 4655 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4656 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4657 } 4658 4659 /** 4660 * @brief Remove event packet handler. 4661 */ 4662 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4663 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4664 } 4665 4666 /** Register HCI packet handlers */ 4667 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4668 hci_stack->acl_packet_handler = handler; 4669 } 4670 4671 #ifdef ENABLE_CLASSIC 4672 /** 4673 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4674 */ 4675 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4676 hci_stack->sco_packet_handler = handler; 4677 } 4678 #endif 4679 4680 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4681 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4682 hci_stack->iso_packet_handler = handler; 4683 } 4684 #endif 4685 4686 static void hci_state_reset(void){ 4687 // no connections yet 4688 hci_stack->connections = NULL; 4689 4690 // keep discoverable/connectable as this has been requested by the client(s) 4691 // hci_stack->discoverable = 0; 4692 // hci_stack->connectable = 0; 4693 // hci_stack->bondable = 1; 4694 // hci_stack->own_addr_type = 0; 4695 4696 // buffer is free 4697 hci_stack->hci_packet_buffer_reserved = false; 4698 4699 // no pending cmds 4700 hci_stack->decline_reason = 0; 4701 4702 hci_stack->secure_connections_active = false; 4703 4704 #ifdef ENABLE_CLASSIC 4705 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4706 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4707 4708 hci_stack->gap_tasks_classic = 4709 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4710 GAP_TASK_SET_CLASS_OF_DEVICE | 4711 GAP_TASK_SET_LOCAL_NAME | 4712 GAP_TASK_SET_EIR_DATA | 4713 GAP_TASK_WRITE_SCAN_ENABLE | 4714 GAP_TASK_WRITE_PAGE_TIMEOUT; 4715 #endif 4716 4717 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4718 hci_stack->classic_read_local_oob_data = false; 4719 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4720 #endif 4721 4722 // LE 4723 #ifdef ENABLE_BLE 4724 memset(hci_stack->le_random_address, 0, 6); 4725 hci_stack->le_random_address_set = 0; 4726 #endif 4727 #ifdef ENABLE_LE_CENTRAL 4728 hci_stack->le_scanning_active = false; 4729 hci_stack->le_scanning_param_update = true; 4730 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4731 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4732 hci_stack->le_whitelist_capacity = 0; 4733 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4734 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4735 #endif 4736 #endif 4737 #ifdef ENABLE_LE_PERIPHERAL 4738 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4739 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4740 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4741 } 4742 if (hci_stack->le_advertisements_data != NULL){ 4743 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4744 } 4745 #endif 4746 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4747 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4748 #endif 4749 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4750 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4751 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4752 #endif 4753 } 4754 4755 #ifdef ENABLE_CLASSIC 4756 /** 4757 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4758 */ 4759 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4760 // store and open remote device db 4761 hci_stack->link_key_db = link_key_db; 4762 if (hci_stack->link_key_db) { 4763 hci_stack->link_key_db->open(); 4764 } 4765 } 4766 #endif 4767 4768 void hci_init(const hci_transport_t *transport, const void *config){ 4769 4770 #ifdef HAVE_MALLOC 4771 if (!hci_stack) { 4772 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4773 } 4774 #else 4775 hci_stack = &hci_stack_static; 4776 #endif 4777 memset(hci_stack, 0, sizeof(hci_stack_t)); 4778 4779 // reference to use transport layer implementation 4780 hci_stack->hci_transport = transport; 4781 4782 // reference to used config 4783 hci_stack->config = config; 4784 4785 // setup pointer for outgoing packet buffer 4786 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4787 4788 // max acl payload size defined in config.h 4789 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4790 4791 // register packet handlers with transport 4792 transport->register_packet_handler(&packet_handler); 4793 4794 hci_stack->state = HCI_STATE_OFF; 4795 4796 // class of device 4797 hci_stack->class_of_device = 0x007a020c; // Smartphone 4798 4799 // bondable by default 4800 hci_stack->bondable = 1; 4801 4802 #ifdef ENABLE_CLASSIC 4803 // classic name 4804 hci_stack->local_name = default_classic_name; 4805 4806 // Master slave policy 4807 hci_stack->master_slave_policy = 1; 4808 4809 // Allow Role Switch 4810 hci_stack->allow_role_switch = 1; 4811 4812 // Default / minimum security level = 2 4813 hci_stack->gap_security_level = LEVEL_2; 4814 4815 // Default Security Mode 4 4816 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4817 4818 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4819 hci_stack->gap_required_encyrption_key_size = 7; 4820 4821 // Link Supervision Timeout 4822 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4823 4824 // All ACL packet types are enabledh 4825 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4826 #endif 4827 4828 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4829 hci_stack->ssp_enable = 1; 4830 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4831 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4832 hci_stack->ssp_auto_accept = 1; 4833 4834 // Secure Connections: enable (requires support from Controller) 4835 hci_stack->secure_connections_enable = true; 4836 4837 // voice setting - signed 16 bit pcm data with CVSD over the air 4838 hci_stack->sco_voice_setting = 0x60; 4839 4840 #ifdef ENABLE_BLE 4841 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4842 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4843 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4844 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4845 hci_stack->le_connection_latency = 4; // 4 4846 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4847 hci_stack->le_minimum_ce_length = 0; // 0 ms 4848 hci_stack->le_maximum_ce_length = 0; // 0 ms 4849 #endif 4850 4851 #ifdef ENABLE_LE_CENTRAL 4852 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4853 4854 // default LE Scanning 4855 hci_stack->le_scan_type = 0x01; // active 4856 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4857 hci_stack->le_scan_window = 0x30; // 30 ms 4858 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4859 #endif 4860 4861 #ifdef ENABLE_LE_PERIPHERAL 4862 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4863 4864 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4865 hci_stack->le_advertisements_interval_min = 0x0800; 4866 hci_stack->le_advertisements_interval_max = 0x0800; 4867 hci_stack->le_advertisements_type = 0; 4868 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4869 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4870 hci_stack->le_advertisements_channel_map = 0x07; 4871 hci_stack->le_advertisements_filter_policy = 0; 4872 #endif 4873 4874 // connection parameter range used to answer connection parameter update requests in l2cap 4875 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4876 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4877 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4878 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4879 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4880 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4881 4882 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4883 hci_stack->iso_packets_to_queue = 1; 4884 #endif 4885 4886 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4887 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4888 #endif 4889 4890 hci_state_reset(); 4891 } 4892 4893 void hci_deinit(void){ 4894 btstack_run_loop_remove_timer(&hci_stack->timeout); 4895 #ifdef HAVE_MALLOC 4896 if (hci_stack) { 4897 free(hci_stack); 4898 } 4899 #endif 4900 hci_stack = NULL; 4901 4902 #ifdef ENABLE_CLASSIC 4903 disable_l2cap_timeouts = 0; 4904 #endif 4905 } 4906 4907 /** 4908 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4909 */ 4910 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4911 hci_stack->chipset = chipset_driver; 4912 4913 // reset chipset driver - init is also called on power_up 4914 if (hci_stack->chipset && hci_stack->chipset->init){ 4915 hci_stack->chipset->init(hci_stack->config); 4916 } 4917 } 4918 4919 void hci_enable_custom_pre_init(void){ 4920 hci_stack->chipset_pre_init = true; 4921 } 4922 4923 /** 4924 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4925 */ 4926 void hci_set_control(const btstack_control_t *hardware_control){ 4927 // references to used control implementation 4928 hci_stack->control = hardware_control; 4929 // init with transport config 4930 hardware_control->init(hci_stack->config); 4931 } 4932 4933 static void hci_discard_connections(void){ 4934 btstack_linked_list_iterator_t it; 4935 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4936 while (btstack_linked_list_iterator_has_next(&it)){ 4937 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4938 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4939 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4940 hci_shutdown_connection(connection); 4941 } 4942 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4943 while (hci_stack->iso_streams != NULL){ 4944 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4945 } 4946 #endif 4947 } 4948 4949 void hci_close(void){ 4950 4951 #ifdef ENABLE_CLASSIC 4952 // close remote device db 4953 if (hci_stack->link_key_db) { 4954 hci_stack->link_key_db->close(); 4955 } 4956 #endif 4957 4958 hci_discard_connections(); 4959 4960 hci_power_control(HCI_POWER_OFF); 4961 4962 #ifdef HAVE_MALLOC 4963 free(hci_stack); 4964 #endif 4965 hci_stack = NULL; 4966 } 4967 4968 #ifdef HAVE_SCO_TRANSPORT 4969 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4970 hci_stack->sco_transport = sco_transport; 4971 sco_transport->register_packet_handler(&packet_handler); 4972 } 4973 #endif 4974 4975 #ifdef ENABLE_CLASSIC 4976 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4977 // validate ranage and set 4978 if (encryption_key_size < 7) return; 4979 if (encryption_key_size > 16) return; 4980 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4981 } 4982 4983 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4984 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4985 hci_stack->gap_security_mode = security_mode; 4986 return ERROR_CODE_SUCCESS; 4987 } else { 4988 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4989 } 4990 } 4991 4992 gap_security_mode_t gap_get_security_mode(void){ 4993 return hci_stack->gap_security_mode; 4994 } 4995 4996 void gap_set_security_level(gap_security_level_t security_level){ 4997 hci_stack->gap_security_level = security_level; 4998 } 4999 5000 gap_security_level_t gap_get_security_level(void){ 5001 if (hci_stack->gap_secure_connections_only_mode){ 5002 return LEVEL_4; 5003 } 5004 return hci_stack->gap_security_level; 5005 } 5006 5007 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5008 hci_stack->gap_minimal_service_security_level = security_level; 5009 } 5010 5011 void gap_set_secure_connections_only_mode(bool enable){ 5012 hci_stack->gap_secure_connections_only_mode = enable; 5013 } 5014 5015 bool gap_get_secure_connections_only_mode(void){ 5016 return hci_stack->gap_secure_connections_only_mode; 5017 } 5018 #endif 5019 5020 #ifdef ENABLE_CLASSIC 5021 void gap_set_class_of_device(uint32_t class_of_device){ 5022 hci_stack->class_of_device = class_of_device; 5023 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5024 hci_run(); 5025 } 5026 5027 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5028 hci_stack->default_link_policy_settings = default_link_policy_settings; 5029 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5030 hci_run(); 5031 } 5032 5033 void gap_set_allow_role_switch(bool allow_role_switch){ 5034 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5035 } 5036 5037 uint8_t hci_get_allow_role_switch(void){ 5038 return hci_stack->allow_role_switch; 5039 } 5040 5041 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5042 hci_stack->link_supervision_timeout = link_supervision_timeout; 5043 } 5044 5045 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5046 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5047 } 5048 5049 uint16_t hci_automatic_flush_timeout(void){ 5050 return hci_stack->automatic_flush_timeout; 5051 } 5052 5053 void hci_disable_l2cap_timeout_check(void){ 5054 disable_l2cap_timeouts = 1; 5055 } 5056 #endif 5057 5058 #ifndef HAVE_HOST_CONTROLLER_API 5059 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5060 void hci_set_bd_addr(bd_addr_t addr){ 5061 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5062 hci_stack->custom_bd_addr_set = 1; 5063 } 5064 #endif 5065 5066 // State-Module-Driver overview 5067 // state module low-level 5068 // HCI_STATE_OFF off close 5069 // HCI_STATE_INITIALIZING, on open 5070 // HCI_STATE_WORKING, on open 5071 // HCI_STATE_HALTING, on open 5072 // HCI_STATE_SLEEPING, off/sleep close 5073 // HCI_STATE_FALLING_ASLEEP on open 5074 5075 static int hci_power_control_on(void){ 5076 5077 // power on 5078 int err = 0; 5079 if (hci_stack->control && hci_stack->control->on){ 5080 err = (*hci_stack->control->on)(); 5081 } 5082 if (err){ 5083 log_error( "POWER_ON failed"); 5084 hci_emit_hci_open_failed(); 5085 return err; 5086 } 5087 5088 // int chipset driver 5089 if (hci_stack->chipset && hci_stack->chipset->init){ 5090 hci_stack->chipset->init(hci_stack->config); 5091 } 5092 5093 // init transport 5094 if (hci_stack->hci_transport->init){ 5095 hci_stack->hci_transport->init(hci_stack->config); 5096 } 5097 5098 // open transport 5099 err = hci_stack->hci_transport->open(); 5100 if (err){ 5101 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5102 if (hci_stack->control && hci_stack->control->off){ 5103 (*hci_stack->control->off)(); 5104 } 5105 hci_emit_hci_open_failed(); 5106 return err; 5107 } 5108 return 0; 5109 } 5110 5111 static void hci_power_control_off(void){ 5112 5113 log_info("hci_power_control_off"); 5114 5115 // close low-level device 5116 hci_stack->hci_transport->close(); 5117 5118 log_info("hci_power_control_off - hci_transport closed"); 5119 5120 // power off 5121 if (hci_stack->control && hci_stack->control->off){ 5122 (*hci_stack->control->off)(); 5123 } 5124 5125 log_info("hci_power_control_off - control closed"); 5126 5127 hci_stack->state = HCI_STATE_OFF; 5128 } 5129 5130 static void hci_power_control_sleep(void){ 5131 5132 log_info("hci_power_control_sleep"); 5133 5134 #if 0 5135 // don't close serial port during sleep 5136 5137 // close low-level device 5138 hci_stack->hci_transport->close(hci_stack->config); 5139 #endif 5140 5141 // sleep mode 5142 if (hci_stack->control && hci_stack->control->sleep){ 5143 (*hci_stack->control->sleep)(); 5144 } 5145 5146 hci_stack->state = HCI_STATE_SLEEPING; 5147 } 5148 5149 static int hci_power_control_wake(void){ 5150 5151 log_info("hci_power_control_wake"); 5152 5153 // wake on 5154 if (hci_stack->control && hci_stack->control->wake){ 5155 (*hci_stack->control->wake)(); 5156 } 5157 5158 #if 0 5159 // open low-level device 5160 int err = hci_stack->hci_transport->open(hci_stack->config); 5161 if (err){ 5162 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5163 if (hci_stack->control && hci_stack->control->off){ 5164 (*hci_stack->control->off)(); 5165 } 5166 hci_emit_hci_open_failed(); 5167 return err; 5168 } 5169 #endif 5170 5171 return 0; 5172 } 5173 5174 static void hci_power_enter_initializing_state(void){ 5175 // set up state machine 5176 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5177 hci_stack->hci_packet_buffer_reserved = false; 5178 hci_stack->state = HCI_STATE_INITIALIZING; 5179 5180 #ifndef HAVE_HOST_CONTROLLER_API 5181 if (hci_stack->chipset_pre_init) { 5182 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5183 } else 5184 #endif 5185 { 5186 hci_stack->substate = HCI_INIT_SEND_RESET; 5187 } 5188 } 5189 5190 static void hci_power_enter_halting_state(void){ 5191 #ifdef ENABLE_BLE 5192 // drop entries scheduled for removal, mark others for re-adding 5193 btstack_linked_list_iterator_t it; 5194 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5195 while (btstack_linked_list_iterator_has_next(&it)){ 5196 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5197 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5198 btstack_linked_list_iterator_remove(&it); 5199 btstack_memory_whitelist_entry_free(entry); 5200 } else { 5201 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5202 } 5203 } 5204 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5205 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5206 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5207 while (btstack_linked_list_iterator_has_next(&it)){ 5208 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5209 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5210 btstack_linked_list_iterator_remove(&it); 5211 btstack_memory_periodic_advertiser_list_entry_free(entry); 5212 } else { 5213 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5214 continue; 5215 } 5216 } 5217 #endif 5218 #endif 5219 // see hci_run 5220 hci_stack->state = HCI_STATE_HALTING; 5221 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5222 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5223 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5224 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5225 btstack_run_loop_add_timer(&hci_stack->timeout); 5226 } 5227 5228 // returns error 5229 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5230 int err; 5231 switch (power_mode){ 5232 case HCI_POWER_ON: 5233 err = hci_power_control_on(); 5234 if (err != 0) { 5235 log_error("hci_power_control_on() error %d", err); 5236 return err; 5237 } 5238 hci_power_enter_initializing_state(); 5239 break; 5240 case HCI_POWER_OFF: 5241 // do nothing 5242 break; 5243 case HCI_POWER_SLEEP: 5244 // do nothing (with SLEEP == OFF) 5245 break; 5246 default: 5247 btstack_assert(false); 5248 break; 5249 } 5250 return ERROR_CODE_SUCCESS; 5251 } 5252 5253 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5254 switch (power_mode){ 5255 case HCI_POWER_ON: 5256 // do nothing 5257 break; 5258 case HCI_POWER_OFF: 5259 // no connections yet, just turn it off 5260 hci_power_control_off(); 5261 break; 5262 case HCI_POWER_SLEEP: 5263 // no connections yet, just turn it off 5264 hci_power_control_sleep(); 5265 break; 5266 default: 5267 btstack_assert(false); 5268 break; 5269 } 5270 return ERROR_CODE_SUCCESS; 5271 } 5272 5273 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5274 switch (power_mode){ 5275 case HCI_POWER_ON: 5276 // do nothing 5277 break; 5278 case HCI_POWER_OFF: 5279 hci_power_enter_halting_state(); 5280 break; 5281 case HCI_POWER_SLEEP: 5282 // see hci_run 5283 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5284 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5285 break; 5286 default: 5287 btstack_assert(false); 5288 break; 5289 } 5290 return ERROR_CODE_SUCCESS; 5291 } 5292 5293 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5294 switch (power_mode){ 5295 case HCI_POWER_ON: 5296 hci_power_enter_initializing_state(); 5297 break; 5298 case HCI_POWER_OFF: 5299 // do nothing 5300 break; 5301 case HCI_POWER_SLEEP: 5302 // see hci_run 5303 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5304 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5305 break; 5306 default: 5307 btstack_assert(false); 5308 break; 5309 } 5310 return ERROR_CODE_SUCCESS; 5311 } 5312 5313 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5314 switch (power_mode){ 5315 case HCI_POWER_ON: 5316 hci_power_enter_initializing_state(); 5317 break; 5318 case HCI_POWER_OFF: 5319 hci_power_enter_halting_state(); 5320 break; 5321 case HCI_POWER_SLEEP: 5322 // do nothing 5323 break; 5324 default: 5325 btstack_assert(false); 5326 break; 5327 } 5328 return ERROR_CODE_SUCCESS; 5329 } 5330 5331 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5332 int err; 5333 switch (power_mode){ 5334 case HCI_POWER_ON: 5335 err = hci_power_control_wake(); 5336 if (err) return err; 5337 hci_power_enter_initializing_state(); 5338 break; 5339 case HCI_POWER_OFF: 5340 hci_power_enter_halting_state(); 5341 break; 5342 case HCI_POWER_SLEEP: 5343 // do nothing 5344 break; 5345 default: 5346 btstack_assert(false); 5347 break; 5348 } 5349 return ERROR_CODE_SUCCESS; 5350 } 5351 5352 int hci_power_control(HCI_POWER_MODE power_mode){ 5353 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5354 btstack_run_loop_remove_timer(&hci_stack->timeout); 5355 int err = 0; 5356 switch (hci_stack->state){ 5357 case HCI_STATE_OFF: 5358 err = hci_power_control_state_off(power_mode); 5359 break; 5360 case HCI_STATE_INITIALIZING: 5361 err = hci_power_control_state_initializing(power_mode); 5362 break; 5363 case HCI_STATE_WORKING: 5364 err = hci_power_control_state_working(power_mode); 5365 break; 5366 case HCI_STATE_HALTING: 5367 err = hci_power_control_state_halting(power_mode); 5368 break; 5369 case HCI_STATE_FALLING_ASLEEP: 5370 err = hci_power_control_state_falling_asleep(power_mode); 5371 break; 5372 case HCI_STATE_SLEEPING: 5373 err = hci_power_control_state_sleeping(power_mode); 5374 break; 5375 default: 5376 btstack_assert(false); 5377 break; 5378 } 5379 if (err != 0){ 5380 return err; 5381 } 5382 5383 // create internal event 5384 hci_emit_state(); 5385 5386 // trigger next/first action 5387 hci_run(); 5388 5389 return 0; 5390 } 5391 5392 5393 static void hci_halting_run(void) { 5394 5395 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5396 5397 hci_connection_t *connection; 5398 #ifdef ENABLE_BLE 5399 #ifdef ENABLE_LE_PERIPHERAL 5400 bool stop_advertismenets; 5401 #endif 5402 #endif 5403 5404 switch (hci_stack->substate) { 5405 case HCI_HALTING_CLASSIC_STOP: 5406 #ifdef ENABLE_CLASSIC 5407 if (!hci_can_send_command_packet_now()) return; 5408 5409 if (hci_stack->connectable || hci_stack->discoverable){ 5410 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5411 hci_send_cmd(&hci_write_scan_enable, 0); 5412 return; 5413 } 5414 #endif 5415 /* fall through */ 5416 5417 case HCI_HALTING_LE_ADV_STOP: 5418 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5419 5420 #ifdef ENABLE_BLE 5421 #ifdef ENABLE_LE_PERIPHERAL 5422 if (!hci_can_send_command_packet_now()) return; 5423 5424 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5425 5426 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5427 if (hci_extended_advertising_supported()){ 5428 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5429 btstack_linked_list_iterator_t it; 5430 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5431 // stop all periodic advertisements and check if an extended set is active 5432 while (btstack_linked_list_iterator_has_next(&it)){ 5433 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5434 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5435 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5436 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5437 return; 5438 } 5439 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5440 stop_advertismenets = true; 5441 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5442 } 5443 } 5444 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5445 if (stop_advertismenets){ 5446 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5447 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5448 return; 5449 } 5450 } else 5451 #else /* ENABLE_LE_PERIPHERAL */ 5452 { 5453 if (stop_advertismenets) { 5454 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5455 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5456 return; 5457 } 5458 } 5459 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5460 #endif /* ENABLE_LE_PERIPHERAL */ 5461 #endif /* ENABLE_BLE */ 5462 5463 /* fall through */ 5464 5465 case HCI_HALTING_LE_SCAN_STOP: 5466 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5467 if (!hci_can_send_command_packet_now()) return; 5468 5469 #ifdef ENABLE_BLE 5470 #ifdef ENABLE_LE_CENTRAL 5471 if (hci_stack->le_scanning_active){ 5472 hci_le_scan_stop(); 5473 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5474 return; 5475 } 5476 #endif 5477 #endif 5478 5479 /* fall through */ 5480 5481 case HCI_HALTING_DISCONNECT_ALL: 5482 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5483 if (!hci_can_send_command_packet_now()) return; 5484 5485 // close all open connections 5486 connection = (hci_connection_t *) hci_stack->connections; 5487 if (connection) { 5488 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5489 5490 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5491 5492 // check state 5493 switch(connection->state) { 5494 case SENT_DISCONNECT: 5495 case RECEIVED_DISCONNECTION_COMPLETE: 5496 // wait until connection is gone 5497 return; 5498 default: 5499 break; 5500 } 5501 5502 // finally, send the disconnect command 5503 connection->state = SENT_DISCONNECT; 5504 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5505 return; 5506 } 5507 5508 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5509 // stop BIGs and BIG Syncs 5510 if (hci_stack->le_audio_bigs != NULL){ 5511 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5512 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5513 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5514 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5515 return; 5516 } 5517 if (hci_stack->le_audio_big_syncs != NULL){ 5518 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5519 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5520 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5521 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5522 return; 5523 } 5524 #endif 5525 5526 btstack_run_loop_remove_timer(&hci_stack->timeout); 5527 5528 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5529 log_info("HCI_STATE_HALTING: wait 50 ms"); 5530 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5531 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5532 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5533 btstack_run_loop_add_timer(&hci_stack->timeout); 5534 break; 5535 5536 case HCI_HALTING_W4_CLOSE_TIMER: 5537 // keep waiting 5538 break; 5539 5540 case HCI_HALTING_CLOSE: 5541 // close left over connections (that had not been properly closed before) 5542 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5543 hci_discard_connections(); 5544 5545 log_info("HCI_STATE_HALTING, calling off"); 5546 5547 // switch mode 5548 hci_power_control_off(); 5549 5550 log_info("HCI_STATE_HALTING, emitting state"); 5551 hci_emit_state(); 5552 log_info("HCI_STATE_HALTING, done"); 5553 break; 5554 5555 default: 5556 break; 5557 } 5558 }; 5559 5560 static void hci_falling_asleep_run(void){ 5561 hci_connection_t * connection; 5562 switch(hci_stack->substate) { 5563 case HCI_FALLING_ASLEEP_DISCONNECT: 5564 log_info("HCI_STATE_FALLING_ASLEEP"); 5565 // close all open connections 5566 connection = (hci_connection_t *) hci_stack->connections; 5567 if (connection){ 5568 5569 // send disconnect 5570 if (!hci_can_send_command_packet_now()) return; 5571 5572 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5573 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5574 5575 // send disconnected event right away - causes higher layer connections to get closed, too. 5576 hci_shutdown_connection(connection); 5577 return; 5578 } 5579 5580 if (hci_classic_supported()){ 5581 // disable page and inquiry scan 5582 if (!hci_can_send_command_packet_now()) return; 5583 5584 log_info("HCI_STATE_HALTING, disabling inq scans"); 5585 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5586 5587 // continue in next sub state 5588 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5589 break; 5590 } 5591 5592 /* fall through */ 5593 5594 case HCI_FALLING_ASLEEP_COMPLETE: 5595 log_info("HCI_STATE_HALTING, calling sleep"); 5596 // switch mode 5597 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5598 hci_emit_state(); 5599 break; 5600 5601 default: 5602 break; 5603 } 5604 } 5605 5606 #ifdef ENABLE_CLASSIC 5607 5608 static void hci_update_scan_enable(void){ 5609 // 2 = page scan, 1 = inq scan 5610 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5611 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5612 hci_run(); 5613 } 5614 5615 void gap_discoverable_control(uint8_t enable){ 5616 if (enable) enable = 1; // normalize argument 5617 5618 if (hci_stack->discoverable == enable){ 5619 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5620 return; 5621 } 5622 5623 hci_stack->discoverable = enable; 5624 hci_update_scan_enable(); 5625 } 5626 5627 void gap_connectable_control(uint8_t enable){ 5628 if (enable) enable = 1; // normalize argument 5629 5630 // don't emit event 5631 if (hci_stack->connectable == enable) return; 5632 5633 hci_stack->connectable = enable; 5634 hci_update_scan_enable(); 5635 } 5636 #endif 5637 5638 void gap_local_bd_addr(bd_addr_t address_buffer){ 5639 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5640 } 5641 5642 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5643 static void hci_host_num_completed_packets(void){ 5644 5645 // create packet manually as arrays are not supported and num_commands should not get reduced 5646 hci_reserve_packet_buffer(); 5647 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5648 5649 uint16_t size = 0; 5650 uint16_t num_handles = 0; 5651 packet[size++] = 0x35; 5652 packet[size++] = 0x0c; 5653 size++; // skip param len 5654 size++; // skip num handles 5655 5656 // add { handle, packets } entries 5657 btstack_linked_item_t * it; 5658 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5659 hci_connection_t * connection = (hci_connection_t *) it; 5660 if (connection->num_packets_completed){ 5661 little_endian_store_16(packet, size, connection->con_handle); 5662 size += 2; 5663 little_endian_store_16(packet, size, connection->num_packets_completed); 5664 size += 2; 5665 // 5666 num_handles++; 5667 connection->num_packets_completed = 0; 5668 } 5669 } 5670 5671 packet[2] = size - 3; 5672 packet[3] = num_handles; 5673 5674 hci_stack->host_completed_packets = 0; 5675 5676 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5677 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5678 5679 // release packet buffer for synchronous transport implementations 5680 if (hci_transport_synchronous()){ 5681 hci_release_packet_buffer(); 5682 hci_emit_transport_packet_sent(); 5683 } 5684 } 5685 #endif 5686 5687 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5688 UNUSED(ds); 5689 hci_stack->substate = HCI_HALTING_CLOSE; 5690 hci_halting_run(); 5691 } 5692 5693 static bool hci_run_acl_fragments(void){ 5694 if (hci_stack->acl_fragmentation_total_size > 0u) { 5695 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5696 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5697 if (connection) { 5698 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5699 hci_send_acl_packet_fragments(connection); 5700 return true; 5701 } 5702 } else { 5703 // connection gone -> discard further fragments 5704 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5705 hci_stack->acl_fragmentation_total_size = 0; 5706 hci_stack->acl_fragmentation_pos = 0; 5707 } 5708 } 5709 return false; 5710 } 5711 5712 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5713 static bool hci_run_iso_fragments(void){ 5714 if (hci_stack->iso_fragmentation_total_size > 0u) { 5715 // TODO: flow control 5716 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5717 hci_send_iso_packet_fragments(); 5718 return true; 5719 } 5720 } 5721 return false; 5722 } 5723 #endif 5724 5725 #ifdef ENABLE_CLASSIC 5726 5727 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5728 static bool hci_classic_operation_active(void) { 5729 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5730 return true; 5731 } 5732 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5733 return true; 5734 } 5735 btstack_linked_item_t * it; 5736 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5737 hci_connection_t *connection = (hci_connection_t *) it; 5738 switch (connection->state) { 5739 case SENT_CREATE_CONNECTION: 5740 case SENT_CANCEL_CONNECTION: 5741 case SENT_DISCONNECT: 5742 return true; 5743 default: 5744 break; 5745 } 5746 } 5747 return false; 5748 } 5749 #endif 5750 5751 static bool hci_run_general_gap_classic(void){ 5752 5753 // assert stack is working and classic is active 5754 if (hci_classic_supported() == false) return false; 5755 if (hci_stack->state != HCI_STATE_WORKING) return false; 5756 5757 // decline incoming connections 5758 if (hci_stack->decline_reason){ 5759 uint8_t reason = hci_stack->decline_reason; 5760 hci_stack->decline_reason = 0; 5761 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5762 return true; 5763 } 5764 5765 if (hci_stack->gap_tasks_classic != 0){ 5766 hci_run_gap_tasks_classic(); 5767 return true; 5768 } 5769 5770 // start/stop inquiry 5771 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5772 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5773 if (hci_classic_operation_active() == false) 5774 #endif 5775 { 5776 uint8_t duration = hci_stack->inquiry_state; 5777 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5778 if (hci_stack->inquiry_max_period_length != 0){ 5779 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); 5780 } else { 5781 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5782 } 5783 return true; 5784 } 5785 } 5786 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5787 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5788 hci_send_cmd(&hci_inquiry_cancel); 5789 return true; 5790 } 5791 5792 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5793 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5794 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5795 return true; 5796 } 5797 5798 // remote name request 5799 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5800 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5801 if (hci_classic_operation_active() == false) 5802 #endif 5803 { 5804 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5805 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5806 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5807 return true; 5808 } 5809 } 5810 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5811 // Local OOB data 5812 if (hci_stack->classic_read_local_oob_data){ 5813 hci_stack->classic_read_local_oob_data = false; 5814 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5815 hci_send_cmd(&hci_read_local_extended_oob_data); 5816 } else { 5817 hci_send_cmd(&hci_read_local_oob_data); 5818 } 5819 } 5820 #endif 5821 // pairing 5822 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5823 uint8_t state = hci_stack->gap_pairing_state; 5824 uint8_t pin_code[PIN_CODE_LEN]; 5825 switch (state){ 5826 case GAP_PAIRING_STATE_SEND_PIN: 5827 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5828 memset(pin_code, 0, 16); 5829 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5830 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5831 break; 5832 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5833 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5834 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5835 break; 5836 case GAP_PAIRING_STATE_SEND_PASSKEY: 5837 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5838 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5839 break; 5840 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5841 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5842 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5843 break; 5844 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5845 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5846 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5847 break; 5848 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5849 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5850 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5851 break; 5852 default: 5853 break; 5854 } 5855 return true; 5856 } 5857 return false; 5858 } 5859 #endif 5860 5861 #ifdef ENABLE_BLE 5862 5863 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5864 static uint8_t hci_le_num_phys(uint8_t phys){ 5865 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5866 btstack_assert(phys); 5867 return num_bits_set[phys]; 5868 } 5869 #endif 5870 5871 #ifdef ENABLE_LE_CENTRAL 5872 static void hci_le_scan_stop(void){ 5873 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5874 if (hci_extended_advertising_supported()) { 5875 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5876 } else 5877 #endif 5878 { 5879 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5880 } 5881 } 5882 5883 static void 5884 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5885 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5886 if (hci_extended_advertising_supported()) { 5887 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5888 uint16_t le_connection_scan_interval[3]; 5889 uint16_t le_connection_scan_window[3]; 5890 uint16_t le_connection_interval_min[3]; 5891 uint16_t le_connection_interval_max[3]; 5892 uint16_t le_connection_latency[3]; 5893 uint16_t le_supervision_timeout[3]; 5894 uint16_t le_minimum_ce_length[3]; 5895 uint16_t le_maximum_ce_length[3]; 5896 5897 uint8_t i; 5898 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5899 for (i=0;i<num_phys;i++){ 5900 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5901 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5902 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5903 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5904 le_connection_latency[i] = hci_stack->le_connection_latency; 5905 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5906 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5907 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5908 } 5909 hci_send_cmd(&hci_le_extended_create_connection, 5910 initiator_filter_policy, 5911 hci_stack->le_connection_own_addr_type, // our addr type: 5912 address_type, // peer address type 5913 address, // peer bd addr 5914 hci_stack->le_connection_phys, // initiating PHY 5915 le_connection_scan_interval, // conn scan interval 5916 le_connection_scan_window, // conn scan windows 5917 le_connection_interval_min, // conn interval min 5918 le_connection_interval_max, // conn interval max 5919 le_connection_latency, // conn latency 5920 le_supervision_timeout, // conn latency 5921 le_minimum_ce_length, // min ce length 5922 le_maximum_ce_length // max ce length 5923 ); 5924 } else 5925 #endif 5926 { 5927 hci_send_cmd(&hci_le_create_connection, 5928 hci_stack->le_connection_scan_interval, // conn scan interval 5929 hci_stack->le_connection_scan_window, // conn scan windows 5930 initiator_filter_policy, // don't use whitelist 5931 address_type, // peer address type 5932 address, // peer bd addr 5933 hci_stack->le_connection_own_addr_type, // our addr type: 5934 hci_stack->le_connection_interval_min, // conn interval min 5935 hci_stack->le_connection_interval_max, // conn interval max 5936 hci_stack->le_connection_latency, // conn latency 5937 hci_stack->le_supervision_timeout, // conn latency 5938 hci_stack->le_minimum_ce_length, // min ce length 5939 hci_stack->le_maximum_ce_length // max ce length 5940 ); 5941 } 5942 } 5943 #endif 5944 5945 #ifdef ENABLE_LE_PERIPHERAL 5946 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5947 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5948 uint8_t operation = 0; 5949 if (pos == 0){ 5950 // first fragment or complete data 5951 operation |= 1; 5952 } 5953 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5954 // last fragment or complete data 5955 operation |= 2; 5956 } 5957 return operation; 5958 } 5959 #endif 5960 #endif 5961 5962 static bool hci_run_general_gap_le(void){ 5963 5964 btstack_linked_list_iterator_t lit; 5965 5966 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5967 if (hci_stack->le_resolvable_private_address_update_s > 0){ 5968 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 5969 hci_stack->le_resolvable_private_address_update_s = 0; 5970 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 5971 return true; 5972 } 5973 #endif 5974 5975 // Phase 1: collect what to stop 5976 5977 #ifdef ENABLE_LE_CENTRAL 5978 bool scanning_stop = false; 5979 bool connecting_stop = false; 5980 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5981 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5982 bool periodic_sync_stop = false; 5983 #endif 5984 #endif 5985 #endif 5986 5987 #ifdef ENABLE_LE_PERIPHERAL 5988 bool advertising_stop = false; 5989 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5990 le_advertising_set_t * advertising_stop_set = NULL; 5991 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5992 bool periodic_advertising_stop = false; 5993 #endif 5994 #endif 5995 #endif 5996 5997 // check if own address changes 5998 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5999 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6000 6001 // check if whitelist needs modification 6002 bool whitelist_modification_pending = false; 6003 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6004 while (btstack_linked_list_iterator_has_next(&lit)){ 6005 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6006 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6007 whitelist_modification_pending = true; 6008 break; 6009 } 6010 } 6011 6012 // check if resolving list needs modification 6013 bool resolving_list_modification_pending = false; 6014 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6015 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6016 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6017 resolving_list_modification_pending = true; 6018 } 6019 #endif 6020 6021 #ifdef ENABLE_LE_CENTRAL 6022 6023 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6024 // check if periodic advertiser list needs modification 6025 bool periodic_list_modification_pending = false; 6026 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6027 while (btstack_linked_list_iterator_has_next(&lit)){ 6028 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6029 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6030 periodic_list_modification_pending = true; 6031 break; 6032 } 6033 } 6034 #endif 6035 6036 // scanning control 6037 if (hci_stack->le_scanning_active) { 6038 // stop if: 6039 // - parameter change required 6040 // - it's disabled 6041 // - whitelist change required but used for scanning 6042 // - resolving list modified 6043 // - own address changes 6044 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6045 if ((hci_stack->le_scanning_param_update) || 6046 !hci_stack->le_scanning_enabled || 6047 (scanning_uses_whitelist && whitelist_modification_pending) || 6048 resolving_list_modification_pending || 6049 random_address_change){ 6050 6051 scanning_stop = true; 6052 } 6053 } 6054 6055 // connecting control 6056 bool connecting_with_whitelist; 6057 switch (hci_stack->le_connecting_state){ 6058 case LE_CONNECTING_DIRECT: 6059 case LE_CONNECTING_WHITELIST: 6060 // stop connecting if: 6061 // - connecting uses white and whitelist modification pending 6062 // - if it got disabled 6063 // - resolving list modified 6064 // - own address changes 6065 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6066 if ((connecting_with_whitelist && whitelist_modification_pending) || 6067 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6068 resolving_list_modification_pending || 6069 random_address_change) { 6070 6071 connecting_stop = true; 6072 } 6073 break; 6074 default: 6075 break; 6076 } 6077 6078 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6079 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6080 // periodic sync control 6081 bool sync_with_advertiser_list; 6082 switch(hci_stack->le_periodic_sync_state){ 6083 case LE_CONNECTING_DIRECT: 6084 case LE_CONNECTING_WHITELIST: 6085 // stop sync if: 6086 // - sync with advertiser list and advertiser list modification pending 6087 // - if it got disabled 6088 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6089 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6090 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6091 periodic_sync_stop = true; 6092 } 6093 break; 6094 default: 6095 break; 6096 } 6097 #endif 6098 #endif 6099 6100 #endif /* ENABLE_LE_CENTRAL */ 6101 6102 #ifdef ENABLE_LE_PERIPHERAL 6103 // le advertisement control 6104 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6105 // stop if: 6106 // - parameter change required 6107 // - random address used in advertising and changes 6108 // - it's disabled 6109 // - whitelist change required but used for advertisement filter policy 6110 // - resolving list modified 6111 // - own address changes 6112 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6113 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6114 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6115 if (advertising_change || 6116 (advertising_uses_random_address && random_address_change) || 6117 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6118 (advertising_uses_whitelist && whitelist_modification_pending) || 6119 resolving_list_modification_pending || 6120 random_address_change) { 6121 6122 advertising_stop = true; 6123 } 6124 } 6125 6126 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6127 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6128 btstack_linked_list_iterator_t it; 6129 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6130 while (btstack_linked_list_iterator_has_next(&it)){ 6131 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6132 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6133 // stop if: 6134 // - parameter change required 6135 // - random address used in connectable advertising and changes 6136 // - it's disabled 6137 // - whitelist change required but used for advertisement filter policy 6138 // - resolving list modified 6139 // - own address changes 6140 // - advertisement set will be removed 6141 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6142 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6143 bool advertising_uses_random_address = 6144 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6145 advertising_connectable; 6146 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6147 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6148 bool advertising_set_random_address_change = 6149 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6150 bool advertising_set_will_be_removed = 6151 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6152 if (advertising_parameter_change || 6153 (advertising_uses_random_address && advertising_set_random_address_change) || 6154 (advertising_enabled == false) || 6155 (advertising_uses_whitelist && whitelist_modification_pending) || 6156 resolving_list_modification_pending || 6157 advertising_set_will_be_removed) { 6158 6159 advertising_stop = true; 6160 advertising_stop_set = advertising_set; 6161 break; 6162 } 6163 } 6164 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6165 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6166 // stop if: 6167 // - it's disabled 6168 // - parameter change required 6169 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6170 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6171 if ((periodic_enabled == false) || periodic_parameter_change){ 6172 periodic_advertising_stop = true; 6173 advertising_stop_set = advertising_set; 6174 } 6175 } 6176 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6177 } 6178 } 6179 #endif 6180 6181 #endif 6182 6183 6184 // Phase 2: stop everything that should be off during modifications 6185 6186 6187 // 2.1 Outgoing connection 6188 #ifdef ENABLE_LE_CENTRAL 6189 if (connecting_stop){ 6190 hci_send_cmd(&hci_le_create_connection_cancel); 6191 return true; 6192 } 6193 #endif 6194 6195 // 2.2 Scanning 6196 #ifdef ENABLE_LE_CENTRAL 6197 if (scanning_stop){ 6198 hci_stack->le_scanning_active = false; 6199 hci_le_scan_stop(); 6200 return true; 6201 } 6202 6203 // 2.3 Periodic Sync 6204 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6205 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6206 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6207 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6208 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6209 return true; 6210 } 6211 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6212 if (periodic_sync_stop){ 6213 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6214 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6215 return true; 6216 } 6217 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6218 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6219 #endif /* ENABLE_LE_CENTRAL */ 6220 6221 // 2.4 Advertising: legacy, extended, periodic 6222 #ifdef ENABLE_LE_PERIPHERAL 6223 if (advertising_stop){ 6224 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6225 if (hci_extended_advertising_supported()) { 6226 uint8_t advertising_stop_handle; 6227 if (advertising_stop_set != NULL){ 6228 advertising_stop_handle = advertising_stop_set->advertising_handle; 6229 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6230 } else { 6231 advertising_stop_handle = 0; 6232 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6233 } 6234 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6235 const uint16_t durations[] = { 0 }; 6236 const uint16_t max_events[] = { 0 }; 6237 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6238 } else 6239 #endif 6240 { 6241 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6242 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6243 } 6244 return true; 6245 } 6246 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6247 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6248 if (periodic_advertising_stop){ 6249 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6250 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6251 return true; 6252 } 6253 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6254 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6255 #endif /* ENABLE_LE_PERIPHERAL */ 6256 6257 6258 // Phase 3: modify 6259 6260 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6261 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6262 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6263 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6264 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6265 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6266 #endif 6267 return true; 6268 } 6269 6270 #ifdef ENABLE_LE_CENTRAL 6271 if (hci_stack->le_scanning_param_update){ 6272 hci_stack->le_scanning_param_update = false; 6273 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6274 if (hci_extended_advertising_supported()){ 6275 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6276 uint8_t scan_types[2]; 6277 uint16_t scan_intervals[2]; 6278 uint16_t scan_windows[2]; 6279 6280 uint8_t i; 6281 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6282 for (i=0;i<num_phys;i++){ 6283 scan_types[i] = hci_stack->le_scan_type; 6284 scan_intervals[i] = hci_stack->le_scan_interval; 6285 scan_windows[i] = hci_stack->le_scan_window; 6286 } 6287 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6288 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6289 } else 6290 #endif 6291 { 6292 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6293 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6294 } 6295 return true; 6296 } 6297 #endif 6298 6299 #ifdef ENABLE_LE_PERIPHERAL 6300 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6301 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6302 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6303 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6304 if (hci_extended_advertising_supported()){ 6305 // map advertisment type to advertising event properties 6306 uint16_t adv_event_properties = 0; 6307 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6308 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6309 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6310 } 6311 hci_stack->le_advertising_set_in_current_command = 0; 6312 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6313 0, 6314 adv_event_properties, 6315 hci_stack->le_advertisements_interval_min, 6316 hci_stack->le_advertisements_interval_max, 6317 hci_stack->le_advertisements_channel_map, 6318 hci_stack->le_advertisements_own_addr_type, 6319 hci_stack->le_advertisements_direct_address_type, 6320 hci_stack->le_advertisements_direct_address, 6321 hci_stack->le_advertisements_filter_policy, 6322 0x7f, // tx power: no preference 6323 0x01, // primary adv phy: LE 1M 6324 0, // secondary adv max skip 6325 0x01, // secondary adv phy 6326 0, // adv sid 6327 0 // scan request notification 6328 ); 6329 } else 6330 #endif 6331 { 6332 hci_send_cmd(&hci_le_set_advertising_parameters, 6333 hci_stack->le_advertisements_interval_min, 6334 hci_stack->le_advertisements_interval_max, 6335 hci_stack->le_advertisements_type, 6336 hci_stack->le_advertisements_own_addr_type, 6337 hci_stack->le_advertisements_direct_address_type, 6338 hci_stack->le_advertisements_direct_address, 6339 hci_stack->le_advertisements_channel_map, 6340 hci_stack->le_advertisements_filter_policy); 6341 } 6342 return true; 6343 } 6344 6345 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6346 // assumption: only set if extended advertising is supported 6347 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6348 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6349 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6350 return true; 6351 } 6352 #endif 6353 6354 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6355 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6356 uint8_t adv_data_clean[31]; 6357 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6358 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6359 hci_stack->le_advertisements_data_len); 6360 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6361 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6362 if (hci_extended_advertising_supported()){ 6363 hci_stack->le_advertising_set_in_current_command = 0; 6364 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6365 } else 6366 #endif 6367 { 6368 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6369 } 6370 return true; 6371 } 6372 6373 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6374 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6375 uint8_t scan_data_clean[31]; 6376 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6377 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6378 hci_stack->le_scan_response_data_len); 6379 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6380 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6381 if (hci_extended_advertising_supported()){ 6382 hci_stack->le_advertising_set_in_current_command = 0; 6383 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6384 } else 6385 #endif 6386 { 6387 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6388 } 6389 return true; 6390 } 6391 6392 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6393 if (hci_extended_advertising_supported()) { 6394 btstack_linked_list_iterator_t it; 6395 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6396 while (btstack_linked_list_iterator_has_next(&it)){ 6397 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6398 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6399 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6400 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6401 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6402 return true; 6403 } 6404 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6405 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6406 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6407 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6408 advertising_set->advertising_handle, 6409 advertising_set->extended_params.advertising_event_properties, 6410 advertising_set->extended_params.primary_advertising_interval_min, 6411 advertising_set->extended_params.primary_advertising_interval_max, 6412 advertising_set->extended_params.primary_advertising_channel_map, 6413 advertising_set->extended_params.own_address_type, 6414 advertising_set->extended_params.peer_address_type, 6415 advertising_set->extended_params.peer_address, 6416 advertising_set->extended_params.advertising_filter_policy, 6417 advertising_set->extended_params.advertising_tx_power, 6418 advertising_set->extended_params.primary_advertising_phy, 6419 advertising_set->extended_params.secondary_advertising_max_skip, 6420 advertising_set->extended_params.secondary_advertising_phy, 6421 advertising_set->extended_params.advertising_sid, 6422 advertising_set->extended_params.scan_request_notification_enable 6423 ); 6424 return true; 6425 } 6426 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6427 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6428 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6429 return true; 6430 } 6431 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6432 uint16_t pos = advertising_set->adv_data_pos; 6433 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6434 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6435 if ((operation & 0x02) != 0){ 6436 // last fragment or complete data 6437 operation |= 2; 6438 advertising_set->adv_data_pos = 0; 6439 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6440 } else { 6441 advertising_set->adv_data_pos += data_to_upload; 6442 } 6443 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6444 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6445 return true; 6446 } 6447 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6448 uint16_t pos = advertising_set->scan_data_pos; 6449 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6450 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6451 if ((operation & 0x02) != 0){ 6452 advertising_set->scan_data_pos = 0; 6453 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6454 } else { 6455 advertising_set->scan_data_pos += data_to_upload; 6456 } 6457 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6458 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6459 return true; 6460 } 6461 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6462 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6463 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6464 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6465 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6466 advertising_set->advertising_handle, 6467 advertising_set->periodic_params.periodic_advertising_interval_min, 6468 advertising_set->periodic_params.periodic_advertising_interval_max, 6469 advertising_set->periodic_params.periodic_advertising_properties); 6470 return true; 6471 } 6472 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6473 uint16_t pos = advertising_set->periodic_data_pos; 6474 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6475 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6476 if ((operation & 0x02) != 0){ 6477 // last fragment or complete data 6478 operation |= 2; 6479 advertising_set->periodic_data_pos = 0; 6480 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6481 } else { 6482 advertising_set->periodic_data_pos += data_to_upload; 6483 } 6484 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6485 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6486 return true; 6487 } 6488 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6489 } 6490 } 6491 #endif 6492 6493 #endif 6494 6495 #ifdef ENABLE_LE_CENTRAL 6496 // if connect with whitelist was active and is not cancelled yet, wait until next time 6497 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6498 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6499 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6500 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6501 #endif 6502 #endif 6503 6504 // LE Whitelist Management 6505 if (whitelist_modification_pending){ 6506 // add/remove entries 6507 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6508 while (btstack_linked_list_iterator_has_next(&lit)){ 6509 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6510 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6511 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6512 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6513 bd_addr_type_t address_type = entry->address_type; 6514 bd_addr_t address; 6515 memcpy(address, entry->address, 6); 6516 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6517 // remove from whitelist if not scheduled for re-addition 6518 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6519 btstack_memory_whitelist_entry_free(entry); 6520 } 6521 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6522 return true; 6523 } 6524 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6525 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6526 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6527 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6528 return true; 6529 } 6530 } 6531 } 6532 6533 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6534 // LE Resolving List Management 6535 if (resolving_list_supported) { 6536 uint16_t i; 6537 switch (hci_stack->le_resolving_list_state) { 6538 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6539 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6540 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6541 return true; 6542 case LE_RESOLVING_LIST_READ_SIZE: 6543 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6544 hci_send_cmd(&hci_le_read_resolving_list_size); 6545 return true; 6546 case LE_RESOLVING_LIST_SEND_CLEAR: 6547 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6548 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6549 sizeof(hci_stack->le_resolving_list_add_entries)); 6550 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6551 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6552 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6553 sizeof(hci_stack->le_resolving_list_remove_entries)); 6554 hci_send_cmd(&hci_le_clear_resolving_list); 6555 return true; 6556 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6557 // first remove old entries 6558 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6559 uint8_t offset = i >> 3; 6560 uint8_t mask = 1 << (i & 7); 6561 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6562 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6563 bd_addr_t peer_identity_addreses; 6564 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6565 sm_key_t peer_irk; 6566 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6567 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6568 6569 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6570 // trigger whitelist entry 'update' (work around for controller bug) 6571 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6572 while (btstack_linked_list_iterator_has_next(&lit)) { 6573 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6574 if (entry->address_type != peer_identity_addr_type) continue; 6575 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6576 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6577 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6578 } 6579 #endif 6580 6581 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6582 peer_identity_addreses); 6583 return true; 6584 } 6585 6586 // then add new entries 6587 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6588 uint8_t offset = i >> 3; 6589 uint8_t mask = 1 << (i & 7); 6590 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6591 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6592 bd_addr_t peer_identity_addreses; 6593 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6594 sm_key_t peer_irk; 6595 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6596 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6597 if (btstack_is_null(peer_irk, 16)) continue; 6598 const uint8_t *local_irk = gap_get_persistent_irk(); 6599 // command uses format specifier 'P' that stores 16-byte value without flip 6600 uint8_t local_irk_flipped[16]; 6601 uint8_t peer_irk_flipped[16]; 6602 reverse_128(local_irk, local_irk_flipped); 6603 reverse_128(peer_irk, peer_irk_flipped); 6604 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6605 peer_irk_flipped, local_irk_flipped); 6606 return true; 6607 } 6608 6609 // finally, set privacy mode 6610 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6611 uint8_t offset = i >> 3; 6612 uint8_t mask = 1 << (i & 7); 6613 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6614 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6615 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6616 // Network Privacy Mode is default 6617 continue; 6618 } 6619 bd_addr_t peer_identity_address; 6620 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6621 sm_key_t peer_irk; 6622 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6623 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6624 if (btstack_is_null(peer_irk, 16)) continue; 6625 // command uses format specifier 'P' that stores 16-byte value without flip 6626 uint8_t peer_irk_flipped[16]; 6627 reverse_128(peer_irk, peer_irk_flipped); 6628 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6629 return true; 6630 } 6631 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6632 break; 6633 6634 default: 6635 break; 6636 } 6637 } 6638 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6639 #endif 6640 6641 #ifdef ENABLE_LE_CENTRAL 6642 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6643 // LE Whitelist Management 6644 if (periodic_list_modification_pending){ 6645 // add/remove entries 6646 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6647 while (btstack_linked_list_iterator_has_next(&lit)){ 6648 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6649 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6650 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6651 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6652 return true; 6653 } 6654 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6655 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6656 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6657 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6658 return true; 6659 } 6660 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6661 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6662 btstack_memory_periodic_advertiser_list_entry_free(entry); 6663 } 6664 } 6665 } 6666 #endif 6667 #endif 6668 6669 #ifdef ENABLE_LE_CENTRAL 6670 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6671 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6672 if (hci_stack->le_past_set_default_params){ 6673 hci_stack->le_past_set_default_params = false; 6674 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6675 hci_stack->le_past_mode, 6676 hci_stack->le_past_skip, 6677 hci_stack->le_past_sync_timeout, 6678 hci_stack->le_past_cte_type); 6679 return true; 6680 } 6681 #endif 6682 #endif 6683 #endif 6684 6685 // post-pone all actions until stack is fully working 6686 if (hci_stack->state != HCI_STATE_WORKING) return false; 6687 6688 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6689 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6690 6691 // Phase 4: restore state 6692 6693 #ifdef ENABLE_LE_CENTRAL 6694 // re-start scanning 6695 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6696 hci_stack->le_scanning_active = true; 6697 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6698 if (hci_extended_advertising_supported()){ 6699 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6700 } else 6701 #endif 6702 { 6703 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6704 } 6705 return true; 6706 } 6707 #endif 6708 6709 #ifdef ENABLE_LE_CENTRAL 6710 // re-start connecting 6711 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6712 bd_addr_t null_addr; 6713 memset(null_addr, 0, 6); 6714 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6715 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6716 hci_send_le_create_connection(1, 0, null_addr); 6717 return true; 6718 } 6719 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6720 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6721 switch(hci_stack->le_periodic_sync_request){ 6722 case LE_CONNECTING_DIRECT: 6723 case LE_CONNECTING_WHITELIST: 6724 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6725 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6726 hci_stack->le_periodic_sync_options, 6727 hci_stack->le_periodic_sync_advertising_sid, 6728 hci_stack->le_periodic_sync_advertiser_address_type, 6729 hci_stack->le_periodic_sync_advertiser_address, 6730 hci_stack->le_periodic_sync_skip, 6731 hci_stack->le_periodic_sync_timeout, 6732 hci_stack->le_periodic_sync_cte_type); 6733 return true; 6734 default: 6735 break; 6736 } 6737 } 6738 #endif 6739 #endif 6740 6741 #ifdef ENABLE_LE_PERIPHERAL 6742 // re-start advertising 6743 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6744 // check if advertisements should be enabled given 6745 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6746 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6747 6748 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6749 if (hci_extended_advertising_supported()){ 6750 const uint8_t advertising_handles[] = { 0 }; 6751 const uint16_t durations[] = { 0 }; 6752 const uint16_t max_events[] = { 0 }; 6753 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6754 } else 6755 #endif 6756 { 6757 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6758 } 6759 return true; 6760 } 6761 6762 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6763 if (hci_extended_advertising_supported()) { 6764 btstack_linked_list_iterator_t it; 6765 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6766 while (btstack_linked_list_iterator_has_next(&it)) { 6767 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6768 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6769 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6770 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6771 const uint16_t durations[] = { advertising_set->enable_timeout }; 6772 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6773 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6774 return true; 6775 } 6776 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6777 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6778 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6779 uint8_t enable = 1; 6780 if (advertising_set->periodic_include_adi){ 6781 enable |= 2; 6782 } 6783 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6784 return true; 6785 } 6786 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6787 } 6788 } 6789 #endif 6790 #endif 6791 6792 return false; 6793 } 6794 6795 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6796 static bool hci_run_iso_tasks(void){ 6797 btstack_linked_list_iterator_t it; 6798 6799 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6800 return false; 6801 } 6802 6803 // BIG 6804 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6805 while (btstack_linked_list_iterator_has_next(&it)){ 6806 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6807 switch (big->state){ 6808 case LE_AUDIO_BIG_STATE_CREATE: 6809 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6810 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6811 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6812 hci_send_cmd(&hci_le_create_big, 6813 big->params->big_handle, 6814 big->params->advertising_handle, 6815 big->params->num_bis, 6816 big->params->sdu_interval_us, 6817 big->params->max_sdu, 6818 big->params->max_transport_latency_ms, 6819 big->params->rtn, 6820 big->params->phy, 6821 big->params->packing, 6822 big->params->framing, 6823 big->params->encryption, 6824 big->params->broadcast_code); 6825 return true; 6826 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6827 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6828 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6829 return true; 6830 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6831 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6832 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6833 return true; 6834 case LE_AUDIO_BIG_STATE_TERMINATE: 6835 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6836 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6837 return true; 6838 default: 6839 break; 6840 } 6841 } 6842 6843 // BIG Sync 6844 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6845 while (btstack_linked_list_iterator_has_next(&it)){ 6846 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6847 switch (big_sync->state){ 6848 case LE_AUDIO_BIG_STATE_CREATE: 6849 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6850 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6851 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6852 hci_send_cmd(&hci_le_big_create_sync, 6853 big_sync->params->big_handle, 6854 big_sync->params->sync_handle, 6855 big_sync->params->encryption, 6856 big_sync->params->broadcast_code, 6857 big_sync->params->mse, 6858 big_sync->params->big_sync_timeout_10ms, 6859 big_sync->params->num_bis, 6860 big_sync->params->bis_indices); 6861 return true; 6862 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6863 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6864 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6865 return true; 6866 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6867 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6868 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6869 return true; 6870 case LE_AUDIO_BIG_STATE_TERMINATE: 6871 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6872 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6873 return true; 6874 default: 6875 break; 6876 } 6877 } 6878 6879 // CIG 6880 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6881 while (btstack_linked_list_iterator_has_next(&it)) { 6882 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6883 uint8_t i; 6884 // Set CIG Parameters 6885 uint8_t cis_id[MAX_NR_CIS]; 6886 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6887 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6888 uint8_t phy_c_to_p[MAX_NR_CIS]; 6889 uint8_t phy_p_to_c[MAX_NR_CIS]; 6890 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6891 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6892 switch (cig->state) { 6893 case LE_AUDIO_CIG_STATE_CREATE: 6894 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6895 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6896 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6897 le_audio_cig_params_t * params = cig->params; 6898 for (i = 0; i < params->num_cis; i++) { 6899 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6900 cis_id[i] = cis_params->cis_id; 6901 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6902 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6903 phy_c_to_p[i] = cis_params->phy_c_to_p; 6904 phy_p_to_c[i] = cis_params->phy_p_to_c; 6905 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6906 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6907 } 6908 hci_send_cmd(&hci_le_set_cig_parameters, 6909 cig->cig_id, 6910 params->sdu_interval_c_to_p, 6911 params->sdu_interval_p_to_c, 6912 params->worst_case_sca, 6913 params->packing, 6914 params->framing, 6915 params->max_transport_latency_c_to_p, 6916 params->max_transport_latency_p_to_c, 6917 params->num_cis, 6918 cis_id, 6919 max_sdu_c_to_p, 6920 max_sdu_p_to_c, 6921 phy_c_to_p, 6922 phy_p_to_c, 6923 rtn_c_to_p, 6924 rtn_p_to_c 6925 ); 6926 return true; 6927 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6928 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6929 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6930 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6931 for (i=0;i<cig->num_cis;i++){ 6932 cig->cis_setup_active[i] = true; 6933 } 6934 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6935 return true; 6936 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6937 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6938 // find next path to setup 6939 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6940 if (cig->cis_established[cis_index] == false) { 6941 continue; 6942 } 6943 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6944 bool setup = true; 6945 if (cis_direction == 0){ 6946 // 0 - input - host to controller 6947 // we are central => central to peripheral 6948 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6949 } else { 6950 // 1 - output - controller to host 6951 // we are central => peripheral to central 6952 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6953 } 6954 if (setup){ 6955 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6956 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6957 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6958 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6959 return true; 6960 } 6961 cig->state_vars.next_cis++; 6962 } 6963 // emit done 6964 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6965 default: 6966 break; 6967 } 6968 } 6969 6970 // CIS Accept/Reject 6971 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6972 while (btstack_linked_list_iterator_has_next(&it)) { 6973 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6974 hci_con_handle_t con_handle; 6975 switch (iso_stream->state){ 6976 case HCI_ISO_STREAM_W2_ACCEPT: 6977 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6978 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6979 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6980 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6981 return true; 6982 case HCI_ISO_STREAM_W2_REJECT: 6983 con_handle = iso_stream->cis_handle; 6984 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6985 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6986 hci_iso_stream_finalize(iso_stream); 6987 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6988 return true; 6989 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6990 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6991 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6992 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6993 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6994 break; 6995 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6996 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6997 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6998 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6999 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7000 break; 7001 default: 7002 break; 7003 } 7004 } 7005 7006 return false; 7007 } 7008 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7009 #endif 7010 7011 static bool hci_run_general_pending_commands(void){ 7012 btstack_linked_item_t * it; 7013 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7014 hci_connection_t * connection = (hci_connection_t *) it; 7015 7016 switch(connection->state){ 7017 case SEND_CREATE_CONNECTION: 7018 switch(connection->address_type){ 7019 #ifdef ENABLE_CLASSIC 7020 case BD_ADDR_TYPE_ACL: 7021 log_info("sending hci_create_connection"); 7022 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7023 break; 7024 #endif 7025 default: 7026 #ifdef ENABLE_BLE 7027 #ifdef ENABLE_LE_CENTRAL 7028 log_info("sending hci_le_create_connection"); 7029 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7030 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7031 hci_send_le_create_connection(0, connection->address_type, connection->address); 7032 connection->state = SENT_CREATE_CONNECTION; 7033 #endif 7034 #endif 7035 break; 7036 } 7037 return true; 7038 7039 #ifdef ENABLE_CLASSIC 7040 case RECEIVED_CONNECTION_REQUEST: 7041 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7042 log_info("sending hci_accept_connection_request"); 7043 connection->state = ACCEPTED_CONNECTION_REQUEST; 7044 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7045 return true; 7046 } 7047 break; 7048 #endif 7049 case SEND_DISCONNECT: 7050 connection->state = SENT_DISCONNECT; 7051 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7052 return true; 7053 7054 default: 7055 break; 7056 } 7057 7058 // no further commands if connection is about to get shut down 7059 if (connection->state == SENT_DISCONNECT) continue; 7060 7061 #ifdef ENABLE_CLASSIC 7062 7063 // Handling link key request requires remote supported features 7064 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7065 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7066 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7067 7068 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7069 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7070 if (have_link_key && security_level_sufficient){ 7071 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7072 } else { 7073 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7074 } 7075 return true; 7076 } 7077 7078 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7079 log_info("denying to pin request"); 7080 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7081 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7082 return true; 7083 } 7084 7085 // security assessment requires remote features 7086 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7087 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7088 hci_ssp_assess_security_on_io_cap_request(connection); 7089 // 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 7090 } 7091 7092 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7093 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7094 // set authentication requirements: 7095 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7096 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7097 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7098 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7099 authreq |= 1; 7100 } 7101 bool bonding = hci_stack->bondable; 7102 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7103 // if we have received IO Cap Response, we're in responder role 7104 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7105 if (bonding && !remote_bonding){ 7106 log_info("Remote not bonding, dropping local flag"); 7107 bonding = false; 7108 } 7109 } 7110 if (bonding){ 7111 if (connection->bonding_flags & BONDING_DEDICATED){ 7112 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7113 } else { 7114 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7115 } 7116 } 7117 uint8_t have_oob_data = 0; 7118 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7119 if (connection->classic_oob_c_192 != NULL){ 7120 have_oob_data |= 1; 7121 } 7122 if (connection->classic_oob_c_256 != NULL){ 7123 have_oob_data |= 2; 7124 } 7125 #endif 7126 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7127 return true; 7128 } 7129 7130 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7131 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7132 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7133 return true; 7134 } 7135 7136 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7137 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7138 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7139 const uint8_t zero[16] = { 0 }; 7140 const uint8_t * r_192 = zero; 7141 const uint8_t * c_192 = zero; 7142 const uint8_t * r_256 = zero; 7143 const uint8_t * c_256 = zero; 7144 // verify P-256 OOB 7145 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7146 c_256 = connection->classic_oob_c_256; 7147 if (connection->classic_oob_r_256 != NULL) { 7148 r_256 = connection->classic_oob_r_256; 7149 } 7150 } 7151 // verify P-192 OOB 7152 if ((connection->classic_oob_c_192 != NULL)) { 7153 c_192 = connection->classic_oob_c_192; 7154 if (connection->classic_oob_r_192 != NULL) { 7155 r_192 = connection->classic_oob_r_192; 7156 } 7157 } 7158 7159 // assess security 7160 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7161 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7162 if (need_level_4 && !can_reach_level_4){ 7163 log_info("Level 4 required, but not possible -> abort"); 7164 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7165 // send oob negative reply 7166 c_256 = NULL; 7167 c_192 = NULL; 7168 } 7169 7170 // Reply 7171 if (c_256 != zero) { 7172 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7173 } else if (c_192 != zero){ 7174 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7175 } else { 7176 hci_stack->classic_oob_con_handle = connection->con_handle; 7177 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7178 } 7179 return true; 7180 } 7181 #endif 7182 7183 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7184 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7185 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7186 return true; 7187 } 7188 7189 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7190 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7191 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7192 return true; 7193 } 7194 7195 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7196 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7197 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7198 return true; 7199 } 7200 7201 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7202 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7203 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7204 connection->state = SENT_DISCONNECT; 7205 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7206 return true; 7207 } 7208 7209 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7210 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7211 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7212 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7213 return true; 7214 } 7215 7216 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7217 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7218 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7219 return true; 7220 } 7221 7222 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7223 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7224 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7225 return true; 7226 } 7227 7228 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7229 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7230 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7231 return true; 7232 } 7233 7234 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7235 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7236 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7237 return true; 7238 } 7239 7240 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7241 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7242 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7243 return true; 7244 } 7245 #endif 7246 7247 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7248 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7249 #ifdef ENABLE_CLASSIC 7250 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7251 #endif 7252 if (connection->state != SENT_DISCONNECT){ 7253 connection->state = SENT_DISCONNECT; 7254 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7255 return true; 7256 } 7257 } 7258 7259 #ifdef ENABLE_CLASSIC 7260 uint16_t sniff_min_interval; 7261 switch (connection->sniff_min_interval){ 7262 case 0: 7263 break; 7264 case 0xffff: 7265 connection->sniff_min_interval = 0; 7266 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7267 return true; 7268 default: 7269 sniff_min_interval = connection->sniff_min_interval; 7270 connection->sniff_min_interval = 0; 7271 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7272 return true; 7273 } 7274 7275 if (connection->sniff_subrating_max_latency != 0xffff){ 7276 uint16_t max_latency = connection->sniff_subrating_max_latency; 7277 connection->sniff_subrating_max_latency = 0; 7278 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7279 return true; 7280 } 7281 7282 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7283 uint8_t service_type = (uint8_t) connection->qos_service_type; 7284 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7285 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); 7286 return true; 7287 } 7288 7289 if (connection->request_role != HCI_ROLE_INVALID){ 7290 hci_role_t role = connection->request_role; 7291 connection->request_role = HCI_ROLE_INVALID; 7292 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7293 return true; 7294 } 7295 #endif 7296 7297 if (connection->gap_connection_tasks != 0){ 7298 #ifdef ENABLE_CLASSIC 7299 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7300 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7301 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7302 return true; 7303 } 7304 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7305 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7306 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7307 return true; 7308 } 7309 #endif 7310 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7311 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7312 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7313 return true; 7314 } 7315 #ifdef ENABLE_BLE 7316 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7317 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7318 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7319 return true; 7320 } 7321 #endif 7322 } 7323 7324 #ifdef ENABLE_BLE 7325 switch (connection->le_con_parameter_update_state){ 7326 // response to L2CAP CON PARAMETER UPDATE REQUEST 7327 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7328 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7329 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7330 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7331 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7332 return true; 7333 case CON_PARAMETER_UPDATE_REPLY: 7334 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7335 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7336 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7337 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7338 return true; 7339 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7340 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7341 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7342 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7343 return true; 7344 default: 7345 break; 7346 } 7347 if (connection->le_phy_update_all_phys != 0xffu){ 7348 uint8_t all_phys = connection->le_phy_update_all_phys; 7349 connection->le_phy_update_all_phys = 0xff; 7350 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); 7351 return true; 7352 } 7353 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7354 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7355 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7356 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7357 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7358 return true; 7359 } 7360 if (connection->le_past_advertising_handle != 0xff){ 7361 uint8_t advertising_handle = connection->le_past_advertising_handle; 7362 connection->le_past_advertising_handle = 0xff; 7363 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7364 return true; 7365 } 7366 #endif 7367 #endif 7368 } 7369 return false; 7370 } 7371 7372 static void hci_run(void){ 7373 7374 // stack state sub statemachines 7375 switch (hci_stack->state) { 7376 case HCI_STATE_INITIALIZING: 7377 hci_initializing_run(); 7378 break; 7379 case HCI_STATE_HALTING: 7380 hci_halting_run(); 7381 break; 7382 case HCI_STATE_FALLING_ASLEEP: 7383 hci_falling_asleep_run(); 7384 break; 7385 default: 7386 break; 7387 } 7388 7389 // allow to run after initialization to working transition 7390 if (hci_stack->state != HCI_STATE_WORKING){ 7391 return; 7392 } 7393 7394 bool done; 7395 7396 // send continuation fragments first, as they block the prepared packet buffer 7397 done = hci_run_acl_fragments(); 7398 if (done) return; 7399 7400 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7401 done = hci_run_iso_fragments(); 7402 if (done) return; 7403 #endif 7404 7405 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7406 // send host num completed packets next as they don't require num_cmd_packets > 0 7407 if (!hci_can_send_comand_packet_transport()) return; 7408 if (hci_stack->host_completed_packets){ 7409 hci_host_num_completed_packets(); 7410 return; 7411 } 7412 #endif 7413 7414 if (!hci_can_send_command_packet_now()) return; 7415 7416 // global/non-connection oriented commands 7417 7418 7419 #ifdef ENABLE_CLASSIC 7420 // general gap classic 7421 done = hci_run_general_gap_classic(); 7422 if (done) return; 7423 #endif 7424 7425 #ifdef ENABLE_BLE 7426 // general gap le 7427 done = hci_run_general_gap_le(); 7428 if (done) return; 7429 7430 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7431 // ISO related tasks, e.g. BIG create/terminate/sync 7432 done = hci_run_iso_tasks(); 7433 if (done) return; 7434 #endif 7435 #endif 7436 7437 // send pending HCI commands 7438 hci_run_general_pending_commands(); 7439 } 7440 7441 #ifdef ENABLE_CLASSIC 7442 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7443 // bits 6-9 are 'don't use' 7444 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7445 7446 // restrict packet types to local and remote supported 7447 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7448 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7449 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7450 } 7451 #endif 7452 7453 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7454 // house-keeping 7455 7456 #ifdef ENABLE_CLASSIC 7457 bd_addr_t addr; 7458 hci_connection_t * conn; 7459 #endif 7460 #ifdef ENABLE_LE_CENTRAL 7461 uint8_t initiator_filter_policy; 7462 #endif 7463 7464 uint16_t opcode = little_endian_read_16(packet, 0); 7465 switch (opcode) { 7466 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7467 hci_stack->loopback_mode = packet[3]; 7468 break; 7469 7470 #ifdef ENABLE_CLASSIC 7471 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7472 reverse_bd_addr(&packet[3], addr); 7473 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7474 7475 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7476 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7477 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7478 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7479 } 7480 7481 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7482 if (!conn) { 7483 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7484 if (!conn) { 7485 // notify client that alloc failed 7486 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7487 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7488 } 7489 conn->state = SEND_CREATE_CONNECTION; 7490 } 7491 7492 log_info("conn state %u", conn->state); 7493 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7494 switch (conn->state) { 7495 // if connection active exists 7496 case OPEN: 7497 // and OPEN, emit connection complete command 7498 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7499 // packet not sent to controller 7500 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7501 case RECEIVED_DISCONNECTION_COMPLETE: 7502 // create connection triggered in disconnect complete event, let's do it now 7503 break; 7504 case SEND_CREATE_CONNECTION: 7505 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7506 if (hci_classic_operation_active()){ 7507 return ERROR_CODE_SUCCESS; 7508 } 7509 #endif 7510 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7511 break; 7512 default: 7513 // otherwise, just ignore as it is already in the open process 7514 // packet not sent to controller 7515 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7516 } 7517 conn->state = SENT_CREATE_CONNECTION; 7518 7519 // track outgoing connection 7520 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7521 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7522 break; 7523 7524 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7525 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7526 if (conn == NULL) { 7527 // neither SCO nor ACL connection for con handle 7528 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7529 } else { 7530 uint16_t remote_supported_sco_packets; 7531 switch (conn->address_type){ 7532 case BD_ADDR_TYPE_ACL: 7533 // assert SCO connection does not exit 7534 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7535 return ERROR_CODE_COMMAND_DISALLOWED; 7536 } 7537 // cache remote sco packet types 7538 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7539 7540 // allocate connection struct 7541 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7542 HCI_ROLE_MASTER); 7543 if (!conn) { 7544 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7545 } 7546 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7547 break; 7548 case BD_ADDR_TYPE_SCO: 7549 // update of existing SCO connection 7550 break; 7551 default: 7552 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7553 } 7554 } 7555 7556 // conn refers to hci connection of type sco now 7557 7558 conn->state = SENT_CREATE_CONNECTION; 7559 7560 // track outgoing connection to handle command status with error 7561 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7562 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7563 7564 // setup_synchronous_connection? Voice setting at offset 22 7565 // TODO: compare to current setting if sco connection already active 7566 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7567 7568 // derive sco payload length from packet types 7569 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7570 break; 7571 7572 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7573 // get SCO connection 7574 reverse_bd_addr(&packet[3], addr); 7575 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7576 if (conn == NULL){ 7577 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7578 } 7579 7580 conn->state = ACCEPTED_CONNECTION_REQUEST; 7581 7582 // track outgoing connection to handle command status with error 7583 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7584 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7585 7586 // accept_synchronous_connection? Voice setting at offset 18 7587 // TODO: compare to current setting if sco connection already active 7588 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7589 7590 // derive sco payload length from packet types 7591 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7592 break; 7593 #endif 7594 7595 #ifdef ENABLE_BLE 7596 #ifdef ENABLE_LE_CENTRAL 7597 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7598 // white list used? 7599 initiator_filter_policy = packet[7]; 7600 switch (initiator_filter_policy) { 7601 case 0: 7602 // whitelist not used 7603 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7604 break; 7605 case 1: 7606 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7607 break; 7608 default: 7609 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7610 break; 7611 } 7612 // track outgoing connection 7613 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7614 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7615 break; 7616 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7617 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7618 // white list used? 7619 initiator_filter_policy = packet[3]; 7620 switch (initiator_filter_policy) { 7621 case 0: 7622 // whitelist not used 7623 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7624 break; 7625 case 1: 7626 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7627 break; 7628 default: 7629 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7630 break; 7631 } 7632 // track outgoing connection 7633 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7634 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7635 break; 7636 #endif 7637 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7638 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7639 break; 7640 #endif 7641 #endif /* ENABLE_BLE */ 7642 default: 7643 break; 7644 } 7645 7646 hci_stack->num_cmd_packets--; 7647 7648 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7649 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7650 if (err != 0){ 7651 return ERROR_CODE_HARDWARE_FAILURE; 7652 } 7653 return ERROR_CODE_SUCCESS; 7654 } 7655 7656 // disconnect because of security block 7657 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7658 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7659 if (!connection) return; 7660 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7661 } 7662 7663 7664 // Configure Secure Simple Pairing 7665 7666 #ifdef ENABLE_CLASSIC 7667 7668 // enable will enable SSP during init 7669 void gap_ssp_set_enable(int enable){ 7670 hci_stack->ssp_enable = enable; 7671 } 7672 7673 static int hci_local_ssp_activated(void){ 7674 return gap_ssp_supported() && hci_stack->ssp_enable; 7675 } 7676 7677 // if set, BTstack will respond to io capability request using authentication requirement 7678 void gap_ssp_set_io_capability(int io_capability){ 7679 hci_stack->ssp_io_capability = io_capability; 7680 } 7681 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7682 hci_stack->ssp_authentication_requirement = authentication_requirement; 7683 } 7684 7685 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7686 void gap_ssp_set_auto_accept(int auto_accept){ 7687 hci_stack->ssp_auto_accept = auto_accept; 7688 } 7689 7690 void gap_secure_connections_enable(bool enable){ 7691 hci_stack->secure_connections_enable = enable; 7692 } 7693 bool gap_secure_connections_active(void){ 7694 return hci_stack->secure_connections_active; 7695 } 7696 7697 #endif 7698 7699 // va_list part of hci_send_cmd 7700 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7701 if (!hci_can_send_command_packet_now()){ 7702 log_error("hci_send_cmd called but cannot send packet now"); 7703 return ERROR_CODE_COMMAND_DISALLOWED; 7704 } 7705 7706 // for HCI INITIALIZATION 7707 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7708 hci_stack->last_cmd_opcode = cmd->opcode; 7709 7710 hci_reserve_packet_buffer(); 7711 uint8_t * packet = hci_stack->hci_packet_buffer; 7712 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7713 uint8_t status = hci_send_cmd_packet(packet, size); 7714 7715 // release packet buffer on error or for synchronous transport implementations 7716 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7717 hci_release_packet_buffer(); 7718 hci_emit_transport_packet_sent(); 7719 } 7720 7721 return status; 7722 } 7723 7724 /** 7725 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7726 */ 7727 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7728 va_list argptr; 7729 va_start(argptr, cmd); 7730 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7731 va_end(argptr); 7732 return status; 7733 } 7734 7735 // Create various non-HCI events. 7736 // TODO: generalize, use table similar to hci_create_command 7737 7738 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7739 // dump packet 7740 if (dump) { 7741 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7742 } 7743 7744 // dispatch to all event handlers 7745 btstack_linked_list_iterator_t it; 7746 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7747 while (btstack_linked_list_iterator_has_next(&it)){ 7748 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7749 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7750 } 7751 } 7752 7753 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7754 if (!hci_stack->acl_packet_handler) return; 7755 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7756 } 7757 7758 #ifdef ENABLE_CLASSIC 7759 static void hci_notify_if_sco_can_send_now(void){ 7760 // notify SCO sender if waiting 7761 if (!hci_stack->sco_waiting_for_can_send_now) return; 7762 if (hci_can_send_sco_packet_now()){ 7763 hci_stack->sco_waiting_for_can_send_now = 0; 7764 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7765 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7766 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7767 } 7768 } 7769 7770 // parsing end emitting has been merged to reduce code size 7771 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7772 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7773 7774 uint8_t * eir_data; 7775 ad_context_t context; 7776 const uint8_t * name; 7777 uint8_t name_len; 7778 7779 if (size < 3) return; 7780 7781 int event_type = hci_event_packet_get_type(packet); 7782 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7783 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7784 7785 switch (event_type){ 7786 case HCI_EVENT_INQUIRY_RESULT: 7787 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7788 if (size != (3 + (num_responses * 14))) return; 7789 break; 7790 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7791 if (size != 257) return; 7792 if (num_responses != 1) return; 7793 break; 7794 default: 7795 return; 7796 } 7797 7798 // event[1] is set at the end 7799 int i; 7800 for (i=0; i<num_responses;i++){ 7801 memset(event, 0, sizeof(event)); 7802 event[0] = GAP_EVENT_INQUIRY_RESULT; 7803 uint8_t event_size = 27; // if name is not set by EIR 7804 7805 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7806 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7807 (void)memcpy(&event[9], 7808 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7809 3); // class of device 7810 (void)memcpy(&event[12], 7811 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7812 2); // clock offset 7813 7814 switch (event_type){ 7815 case HCI_EVENT_INQUIRY_RESULT: 7816 // 14,15,16,17 = 0, size 18 7817 break; 7818 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7819 event[14] = 1; 7820 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7821 // 16,17 = 0, size 18 7822 break; 7823 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7824 event[14] = 1; 7825 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7826 // EIR packets only contain a single inquiry response 7827 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7828 name = NULL; 7829 // Iterate over EIR data 7830 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7831 uint8_t data_type = ad_iterator_get_data_type(&context); 7832 uint8_t data_size = ad_iterator_get_data_len(&context); 7833 const uint8_t * data = ad_iterator_get_data(&context); 7834 // Prefer Complete Local Name over Shortened Local Name 7835 switch (data_type){ 7836 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7837 if (name) continue; 7838 /* fall through */ 7839 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7840 name = data; 7841 name_len = data_size; 7842 break; 7843 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7844 if (data_size != 8) break; 7845 event[16] = 1; 7846 memcpy(&event[17], data, 8); 7847 break; 7848 default: 7849 break; 7850 } 7851 } 7852 if (name){ 7853 event[25] = 1; 7854 // truncate name if needed 7855 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7856 event[26] = len; 7857 (void)memcpy(&event[27], name, len); 7858 event_size += len; 7859 } 7860 break; 7861 default: 7862 return; 7863 } 7864 event[1] = event_size - 2; 7865 hci_emit_event(event, event_size, 1); 7866 } 7867 } 7868 #endif 7869 7870 void hci_emit_state(void){ 7871 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7872 uint8_t event[3]; 7873 event[0] = BTSTACK_EVENT_STATE; 7874 event[1] = sizeof(event) - 2u; 7875 event[2] = hci_stack->state; 7876 hci_emit_event(event, sizeof(event), 1); 7877 } 7878 7879 #ifdef ENABLE_CLASSIC 7880 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7881 uint8_t event[13]; 7882 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7883 event[1] = sizeof(event) - 2; 7884 event[2] = status; 7885 little_endian_store_16(event, 3, con_handle); 7886 reverse_bd_addr(address, &event[5]); 7887 event[11] = 1; // ACL connection 7888 event[12] = 0; // encryption disabled 7889 hci_emit_event(event, sizeof(event), 1); 7890 } 7891 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7892 if (disable_l2cap_timeouts) return; 7893 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7894 uint8_t event[4]; 7895 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7896 event[1] = sizeof(event) - 2; 7897 little_endian_store_16(event, 2, conn->con_handle); 7898 hci_emit_event(event, sizeof(event), 1); 7899 } 7900 #endif 7901 7902 #ifdef ENABLE_BLE 7903 #ifdef ENABLE_LE_CENTRAL 7904 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){ 7905 uint8_t hci_event[21]; 7906 hci_event[0] = HCI_EVENT_LE_META; 7907 hci_event[1] = sizeof(hci_event) - 2u; 7908 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7909 hci_event[3] = status; 7910 little_endian_store_16(hci_event, 4, con_handle); 7911 hci_event[6] = 0; // TODO: role 7912 hci_event[7] = address_type; 7913 reverse_bd_addr(address, &hci_event[8]); 7914 little_endian_store_16(hci_event, 14, 0); // interval 7915 little_endian_store_16(hci_event, 16, 0); // latency 7916 little_endian_store_16(hci_event, 18, 0); // supervision timeout 7917 hci_event[20] = 0; // master clock accuracy 7918 hci_emit_event(hci_event, sizeof(hci_event), 1); 7919 // emit GAP event, too 7920 uint8_t gap_event[36]; 7921 hci_create_gap_connection_complete_event(hci_event, gap_event); 7922 hci_emit_event(gap_event, sizeof(gap_event), 1); 7923 } 7924 #endif 7925 #endif 7926 7927 static void hci_emit_transport_packet_sent(void){ 7928 // notify upper stack that it might be possible to send again 7929 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7930 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7931 } 7932 7933 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7934 uint8_t event[6]; 7935 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7936 event[1] = sizeof(event) - 2u; 7937 event[2] = 0; // status = OK 7938 little_endian_store_16(event, 3, con_handle); 7939 event[5] = reason; 7940 hci_emit_event(event, sizeof(event), 1); 7941 } 7942 7943 static void hci_emit_nr_connections_changed(void){ 7944 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7945 uint8_t event[3]; 7946 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7947 event[1] = sizeof(event) - 2u; 7948 event[2] = nr_hci_connections(); 7949 hci_emit_event(event, sizeof(event), 1); 7950 } 7951 7952 static void hci_emit_hci_open_failed(void){ 7953 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7954 uint8_t event[2]; 7955 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7956 event[1] = sizeof(event) - 2u; 7957 hci_emit_event(event, sizeof(event), 1); 7958 } 7959 7960 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7961 log_info("hci_emit_dedicated_bonding_result %u ", status); 7962 uint8_t event[9]; 7963 int pos = 0; 7964 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7965 event[pos++] = sizeof(event) - 2u; 7966 event[pos++] = status; 7967 reverse_bd_addr(address, &event[pos]); 7968 hci_emit_event(event, sizeof(event), 1); 7969 } 7970 7971 7972 #ifdef ENABLE_CLASSIC 7973 7974 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7975 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7976 uint8_t event[5]; 7977 int pos = 0; 7978 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7979 event[pos++] = sizeof(event) - 2; 7980 little_endian_store_16(event, 2, con_handle); 7981 pos += 2; 7982 event[pos++] = level; 7983 hci_emit_event(event, sizeof(event), 1); 7984 } 7985 7986 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7987 if (!connection) return LEVEL_0; 7988 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7989 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7990 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7991 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7992 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7993 // LEVEL 4 always requires 128 bit encrytion key size 7994 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7995 security_level = LEVEL_3; 7996 } 7997 return security_level; 7998 } 7999 8000 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8001 uint8_t event[4]; 8002 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8003 event[1] = sizeof(event) - 2; 8004 event[2] = discoverable; 8005 event[3] = connectable; 8006 hci_emit_event(event, sizeof(event), 1); 8007 } 8008 8009 // query if remote side supports eSCO 8010 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8011 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8012 if (!connection) return false; 8013 return (connection->remote_supported_features[0] & 1) != 0; 8014 } 8015 8016 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8017 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8018 if (!connection) return 0; 8019 return connection->remote_supported_sco_packets; 8020 } 8021 8022 static bool hci_ssp_supported(hci_connection_t * connection){ 8023 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8024 return (connection->bonding_flags & mask) == mask; 8025 } 8026 8027 // query if remote side supports SSP 8028 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8029 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8030 if (!connection) return false; 8031 return hci_ssp_supported(connection) ? 1 : 0; 8032 } 8033 8034 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8035 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8036 } 8037 8038 /** 8039 * Check if remote supported features query has completed 8040 */ 8041 bool hci_remote_features_available(hci_con_handle_t handle){ 8042 hci_connection_t * connection = hci_connection_for_handle(handle); 8043 if (!connection) return false; 8044 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8045 } 8046 8047 /** 8048 * Trigger remote supported features query 8049 */ 8050 8051 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8052 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8053 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8054 } 8055 } 8056 8057 void hci_remote_features_query(hci_con_handle_t con_handle){ 8058 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8059 if (!connection) return; 8060 hci_trigger_remote_features_for_connection(connection); 8061 hci_run(); 8062 } 8063 8064 // GAP API 8065 /** 8066 * @bbrief enable/disable bonding. default is enabled 8067 * @praram enabled 8068 */ 8069 void gap_set_bondable_mode(int enable){ 8070 hci_stack->bondable = enable ? 1 : 0; 8071 } 8072 /** 8073 * @brief Get bondable mode. 8074 * @return 1 if bondable 8075 */ 8076 int gap_get_bondable_mode(void){ 8077 return hci_stack->bondable; 8078 } 8079 8080 /** 8081 * @brief map link keys to security levels 8082 */ 8083 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8084 switch (link_key_type){ 8085 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8086 return LEVEL_4; 8087 case COMBINATION_KEY: 8088 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8089 return LEVEL_3; 8090 default: 8091 return LEVEL_2; 8092 } 8093 } 8094 8095 /** 8096 * @brief map link keys to secure connection yes/no 8097 */ 8098 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8099 switch (link_key_type){ 8100 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8101 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8102 return true; 8103 default: 8104 return false; 8105 } 8106 } 8107 8108 /** 8109 * @brief map link keys to authenticated 8110 */ 8111 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8112 switch (link_key_type){ 8113 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8114 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8115 return true; 8116 default: 8117 return false; 8118 } 8119 } 8120 8121 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8122 log_info("gap_mitm_protection_required_for_security_level %u", level); 8123 return level > LEVEL_2; 8124 } 8125 8126 /** 8127 * @brief get current security level 8128 */ 8129 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8130 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8131 if (!connection) return LEVEL_0; 8132 return gap_security_level_for_connection(connection); 8133 } 8134 8135 /** 8136 * @brief request connection to device to 8137 * @result GAP_AUTHENTICATION_RESULT 8138 */ 8139 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8140 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8141 if (!connection){ 8142 hci_emit_security_level(con_handle, LEVEL_0); 8143 return; 8144 } 8145 8146 btstack_assert(hci_is_le_connection(connection) == false); 8147 8148 // 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) 8149 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8150 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8151 requested_level = LEVEL_4; 8152 } 8153 8154 gap_security_level_t current_level = gap_security_level(con_handle); 8155 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8156 requested_level, connection->requested_security_level, current_level); 8157 8158 // authentication active if authentication request was sent or planned level > 0 8159 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8160 if (authentication_active){ 8161 // authentication already active 8162 if (connection->requested_security_level < requested_level){ 8163 // increase requested level as new level is higher 8164 // TODO: handle re-authentication when done 8165 connection->requested_security_level = requested_level; 8166 } 8167 } else { 8168 // no request active, notify if security sufficient 8169 if (requested_level <= current_level){ 8170 hci_emit_security_level(con_handle, current_level); 8171 return; 8172 } 8173 8174 // store request 8175 connection->requested_security_level = requested_level; 8176 8177 // start to authenticate connection 8178 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8179 8180 // request remote features if not already active, also trigger hci_run 8181 hci_remote_features_query(con_handle); 8182 } 8183 } 8184 8185 /** 8186 * @brief start dedicated bonding with device. disconnect after bonding 8187 * @param device 8188 * @param request MITM protection 8189 * @result GAP_DEDICATED_BONDING_COMPLETE 8190 */ 8191 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8192 8193 // create connection state machine 8194 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8195 8196 if (!connection){ 8197 return BTSTACK_MEMORY_ALLOC_FAILED; 8198 } 8199 8200 // delete link key 8201 gap_drop_link_key_for_bd_addr(device); 8202 8203 // configure LEVEL_2/3, dedicated bonding 8204 connection->state = SEND_CREATE_CONNECTION; 8205 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8206 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8207 connection->bonding_flags = BONDING_DEDICATED; 8208 8209 hci_run(); 8210 8211 return 0; 8212 } 8213 8214 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8215 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8216 if (connection == NULL){ 8217 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8218 } 8219 if (defer){ 8220 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8221 } else { 8222 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8223 // trigger disconnect 8224 hci_run(); 8225 } 8226 return ERROR_CODE_SUCCESS; 8227 } 8228 8229 void gap_set_local_name(const char * local_name){ 8230 hci_stack->local_name = local_name; 8231 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8232 // also update EIR if not set by user 8233 if (hci_stack->eir_data == NULL){ 8234 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8235 } 8236 hci_run(); 8237 } 8238 #endif 8239 8240 8241 #ifdef ENABLE_BLE 8242 8243 #ifdef ENABLE_LE_CENTRAL 8244 void gap_start_scan(void){ 8245 hci_stack->le_scanning_enabled = true; 8246 hci_run(); 8247 } 8248 8249 void gap_stop_scan(void){ 8250 hci_stack->le_scanning_enabled = false; 8251 hci_run(); 8252 } 8253 8254 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8255 hci_stack->le_scan_type = scan_type; 8256 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8257 hci_stack->le_scan_interval = scan_interval; 8258 hci_stack->le_scan_window = scan_window; 8259 hci_stack->le_scanning_param_update = true; 8260 hci_run(); 8261 } 8262 8263 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8264 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8265 } 8266 8267 void gap_set_scan_duplicate_filter(bool enabled){ 8268 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8269 } 8270 8271 void gap_set_scan_phys(uint8_t phys){ 8272 // LE Coded and LE 1M PHY 8273 hci_stack->le_scan_phys = phys & 0x05; 8274 } 8275 8276 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8277 // disallow le connection if outgoing already active 8278 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8279 log_error("le connect already active"); 8280 return ERROR_CODE_COMMAND_DISALLOWED; 8281 } 8282 8283 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8284 if (conn == NULL) { 8285 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8286 if (conn == false){ 8287 // alloc failed 8288 log_info("gap_connect: failed to alloc hci_connection_t"); 8289 return BTSTACK_MEMORY_ALLOC_FAILED; 8290 } 8291 } else { 8292 switch (conn->state) { 8293 case RECEIVED_DISCONNECTION_COMPLETE: 8294 // connection was just disconnected, reset state and allow re-connect 8295 conn->role = HCI_ROLE_MASTER; 8296 break; 8297 default: 8298 return ERROR_CODE_COMMAND_DISALLOWED; 8299 } 8300 } 8301 8302 // set le connecting state 8303 if (hci_is_le_connection_type(addr_type)){ 8304 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8305 } 8306 8307 // trigger connect 8308 log_info("gap_connect: send create connection next"); 8309 conn->state = SEND_CREATE_CONNECTION; 8310 hci_run(); 8311 return ERROR_CODE_SUCCESS; 8312 } 8313 8314 // @assumption: only a single outgoing LE Connection exists 8315 static hci_connection_t * gap_get_outgoing_connection(void){ 8316 btstack_linked_item_t *it; 8317 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8318 hci_connection_t * conn = (hci_connection_t *) it; 8319 if (!hci_is_le_connection(conn)) continue; 8320 switch (conn->state){ 8321 case SEND_CREATE_CONNECTION: 8322 case SENT_CREATE_CONNECTION: 8323 return conn; 8324 default: 8325 break; 8326 }; 8327 } 8328 return NULL; 8329 } 8330 8331 uint8_t gap_connect_cancel(void){ 8332 hci_connection_t * conn; 8333 switch (hci_stack->le_connecting_request){ 8334 case LE_CONNECTING_IDLE: 8335 break; 8336 case LE_CONNECTING_WHITELIST: 8337 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8338 hci_run(); 8339 break; 8340 case LE_CONNECTING_DIRECT: 8341 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8342 conn = gap_get_outgoing_connection(); 8343 if (conn == NULL){ 8344 hci_run(); 8345 } else { 8346 switch (conn->state){ 8347 case SEND_CREATE_CONNECTION: 8348 // skip sending create connection and emit event instead 8349 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8350 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8351 btstack_memory_hci_connection_free( conn ); 8352 break; 8353 case SENT_CREATE_CONNECTION: 8354 // let hci_run_general_gap_le cancel outgoing connection 8355 hci_run(); 8356 break; 8357 default: 8358 break; 8359 } 8360 } 8361 break; 8362 default: 8363 btstack_unreachable(); 8364 break; 8365 } 8366 return ERROR_CODE_SUCCESS; 8367 } 8368 8369 /** 8370 * @brief Set connection parameters for outgoing connections 8371 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8372 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8373 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8374 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8375 * @param conn_latency, default: 4 8376 * @param supervision_timeout (unit: 10ms), default: 720 ms 8377 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8378 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8379 */ 8380 8381 void gap_set_connection_phys(uint8_t phys){ 8382 // LE Coded, LE 1M, LE 2M PHY 8383 hci_stack->le_connection_phys = phys & 7; 8384 } 8385 8386 #endif 8387 8388 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8389 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8390 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8391 hci_stack->le_connection_scan_interval = conn_scan_interval; 8392 hci_stack->le_connection_scan_window = conn_scan_window; 8393 hci_stack->le_connection_interval_min = conn_interval_min; 8394 hci_stack->le_connection_interval_max = conn_interval_max; 8395 hci_stack->le_connection_latency = conn_latency; 8396 hci_stack->le_supervision_timeout = supervision_timeout; 8397 hci_stack->le_minimum_ce_length = min_ce_length; 8398 hci_stack->le_maximum_ce_length = max_ce_length; 8399 } 8400 8401 /** 8402 * @brief Updates the connection parameters for a given LE connection 8403 * @param handle 8404 * @param conn_interval_min (unit: 1.25ms) 8405 * @param conn_interval_max (unit: 1.25ms) 8406 * @param conn_latency 8407 * @param supervision_timeout (unit: 10ms) 8408 * @return 0 if ok 8409 */ 8410 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8411 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8412 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8413 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8414 connection->le_conn_interval_min = conn_interval_min; 8415 connection->le_conn_interval_max = conn_interval_max; 8416 connection->le_conn_latency = conn_latency; 8417 connection->le_supervision_timeout = supervision_timeout; 8418 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8419 hci_run(); 8420 return 0; 8421 } 8422 8423 /** 8424 * @brief Request an update of the connection parameter for a given LE connection 8425 * @param handle 8426 * @param conn_interval_min (unit: 1.25ms) 8427 * @param conn_interval_max (unit: 1.25ms) 8428 * @param conn_latency 8429 * @param supervision_timeout (unit: 10ms) 8430 * @return 0 if ok 8431 */ 8432 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8433 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8434 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8435 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8436 connection->le_conn_interval_min = conn_interval_min; 8437 connection->le_conn_interval_max = conn_interval_max; 8438 connection->le_conn_latency = conn_latency; 8439 connection->le_supervision_timeout = supervision_timeout; 8440 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8441 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8442 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8443 return 0; 8444 } 8445 8446 #ifdef ENABLE_LE_PERIPHERAL 8447 8448 /** 8449 * @brief Set Advertisement Data 8450 * @param advertising_data_length 8451 * @param advertising_data (max 31 octets) 8452 * @note data is not copied, pointer has to stay valid 8453 */ 8454 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8455 hci_stack->le_advertisements_data_len = advertising_data_length; 8456 hci_stack->le_advertisements_data = advertising_data; 8457 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8458 hci_run(); 8459 } 8460 8461 /** 8462 * @brief Set Scan Response Data 8463 * @param advertising_data_length 8464 * @param advertising_data (max 31 octets) 8465 * @note data is not copied, pointer has to stay valid 8466 */ 8467 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8468 hci_stack->le_scan_response_data_len = scan_response_data_length; 8469 hci_stack->le_scan_response_data = scan_response_data; 8470 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8471 hci_run(); 8472 } 8473 8474 /** 8475 * @brief Set Advertisement Parameters 8476 * @param adv_int_min 8477 * @param adv_int_max 8478 * @param adv_type 8479 * @param direct_address_type 8480 * @param direct_address 8481 * @param channel_map 8482 * @param filter_policy 8483 * 8484 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8485 */ 8486 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8487 uint8_t direct_address_typ, bd_addr_t direct_address, 8488 uint8_t channel_map, uint8_t filter_policy) { 8489 8490 hci_stack->le_advertisements_interval_min = adv_int_min; 8491 hci_stack->le_advertisements_interval_max = adv_int_max; 8492 hci_stack->le_advertisements_type = adv_type; 8493 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8494 hci_stack->le_advertisements_channel_map = channel_map; 8495 hci_stack->le_advertisements_filter_policy = filter_policy; 8496 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8497 6); 8498 8499 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8500 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8501 hci_run(); 8502 } 8503 8504 /** 8505 * @brief Enable/Disable Advertisements 8506 * @param enabled 8507 */ 8508 void gap_advertisements_enable(int enabled){ 8509 if (enabled == 0){ 8510 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8511 } else { 8512 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8513 } 8514 hci_update_advertisements_enabled_for_current_roles(); 8515 hci_run(); 8516 } 8517 8518 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8519 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8520 btstack_linked_list_iterator_t it; 8521 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8522 while (btstack_linked_list_iterator_has_next(&it)){ 8523 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8524 if ( item->advertising_handle == advertising_handle ) { 8525 return item; 8526 } 8527 } 8528 return NULL; 8529 } 8530 8531 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8532 hci_stack->le_resolvable_private_address_update_s = update_s; 8533 hci_run(); 8534 return ERROR_CODE_SUCCESS; 8535 } 8536 8537 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8538 // find free advertisement handle 8539 uint8_t advertisement_handle; 8540 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8541 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8542 } 8543 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8544 // clear 8545 memset(storage, 0, sizeof(le_advertising_set_t)); 8546 // copy params 8547 storage->advertising_handle = advertisement_handle; 8548 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8549 // add to list 8550 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8551 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8552 *out_advertising_handle = advertisement_handle; 8553 // set tasks and start 8554 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8555 hci_run(); 8556 return ERROR_CODE_SUCCESS; 8557 } 8558 8559 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8560 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8561 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8562 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8563 // set tasks and start 8564 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8565 hci_run(); 8566 return ERROR_CODE_SUCCESS; 8567 } 8568 8569 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8570 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8571 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8572 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8573 return ERROR_CODE_SUCCESS; 8574 } 8575 8576 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8577 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8578 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8579 memcpy(advertising_set->random_address, random_address, 6); 8580 // set tasks and start 8581 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8582 hci_run(); 8583 return ERROR_CODE_SUCCESS; 8584 } 8585 8586 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8587 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8588 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8589 advertising_set->adv_data = advertising_data; 8590 advertising_set->adv_data_len = advertising_data_length; 8591 // set tasks and start 8592 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8593 hci_run(); 8594 return ERROR_CODE_SUCCESS; 8595 } 8596 8597 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){ 8598 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8599 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8600 advertising_set->scan_data = scan_response_data; 8601 advertising_set->scan_data_len = scan_response_data_length; 8602 // set tasks and start 8603 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8604 hci_run(); 8605 return ERROR_CODE_SUCCESS; 8606 } 8607 8608 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8609 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8610 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8611 advertising_set->enable_timeout = timeout; 8612 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8613 // set tasks and start 8614 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8615 hci_run(); 8616 return ERROR_CODE_SUCCESS; 8617 } 8618 8619 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8620 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8621 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8622 // set tasks and start 8623 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8624 hci_run(); 8625 return ERROR_CODE_SUCCESS; 8626 } 8627 8628 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8629 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8630 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8631 // set tasks and start 8632 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8633 hci_run(); 8634 return ERROR_CODE_SUCCESS; 8635 } 8636 8637 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8638 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8639 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8640 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8641 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8642 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8643 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8644 // set tasks and start 8645 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8646 hci_run(); 8647 return ERROR_CODE_SUCCESS; 8648 } 8649 8650 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8651 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8652 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8653 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8654 return ERROR_CODE_SUCCESS; 8655 } 8656 8657 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8658 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8659 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8660 advertising_set->periodic_data = periodic_data; 8661 advertising_set->periodic_data_len = periodic_data_length; 8662 // set tasks and start 8663 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8664 hci_run(); 8665 return ERROR_CODE_SUCCESS; 8666 } 8667 8668 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8669 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8670 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8671 // set tasks and start 8672 advertising_set->periodic_include_adi = include_adi; 8673 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8674 hci_run(); 8675 return ERROR_CODE_SUCCESS; 8676 } 8677 8678 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8679 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8680 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8681 // set tasks and start 8682 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8683 hci_run(); 8684 return ERROR_CODE_SUCCESS; 8685 } 8686 8687 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8688 hci_stack->le_past_mode = mode; 8689 hci_stack->le_past_skip = skip; 8690 hci_stack->le_past_sync_timeout = sync_timeout; 8691 hci_stack->le_past_cte_type = cte_type; 8692 hci_stack->le_past_set_default_params = true; 8693 hci_run(); 8694 return ERROR_CODE_SUCCESS; 8695 } 8696 8697 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8698 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8699 if (hci_connection == NULL){ 8700 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8701 } 8702 hci_connection->le_past_sync_handle = sync_handle; 8703 hci_connection->le_past_service_data = service_data; 8704 hci_run(); 8705 return ERROR_CODE_SUCCESS; 8706 } 8707 8708 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8709 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8710 if (hci_connection == NULL){ 8711 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8712 } 8713 hci_connection->le_past_advertising_handle = advertising_handle; 8714 hci_connection->le_past_service_data = service_data; 8715 hci_run(); 8716 return ERROR_CODE_SUCCESS; 8717 } 8718 8719 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8720 8721 #endif 8722 8723 #endif 8724 8725 void hci_le_set_own_address_type(uint8_t own_address_type){ 8726 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8727 if (own_address_type == hci_stack->le_own_addr_type) return; 8728 hci_stack->le_own_addr_type = own_address_type; 8729 8730 #ifdef ENABLE_LE_PERIPHERAL 8731 // update advertisement parameters, too 8732 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8733 hci_run(); 8734 #endif 8735 #ifdef ENABLE_LE_CENTRAL 8736 // note: we don't update scan parameters or modify ongoing connection attempts 8737 #endif 8738 } 8739 8740 void hci_le_random_address_set(const bd_addr_t random_address){ 8741 memcpy(hci_stack->le_random_address, random_address, 6); 8742 hci_stack->le_random_address_set = true; 8743 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8744 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8745 if (hci_extended_advertising_supported()){ 8746 // force advertising set creation for LE Set Advertising Set Random Address 8747 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8748 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8749 } 8750 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8751 } 8752 #endif 8753 hci_run(); 8754 } 8755 8756 #endif 8757 8758 uint8_t gap_disconnect(hci_con_handle_t handle){ 8759 hci_connection_t * conn = hci_connection_for_handle(handle); 8760 if (!conn){ 8761 hci_emit_disconnection_complete(handle, 0); 8762 return 0; 8763 } 8764 // ignore if already disconnected 8765 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8766 return 0; 8767 } 8768 conn->state = SEND_DISCONNECT; 8769 hci_run(); 8770 return 0; 8771 } 8772 8773 int gap_read_rssi(hci_con_handle_t con_handle){ 8774 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8775 if (hci_connection == NULL) return 0; 8776 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8777 hci_run(); 8778 return 1; 8779 } 8780 8781 /** 8782 * @brief Get connection type 8783 * @param con_handle 8784 * @result connection_type 8785 */ 8786 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8787 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8788 if (!conn) return GAP_CONNECTION_INVALID; 8789 switch (conn->address_type){ 8790 case BD_ADDR_TYPE_LE_PUBLIC: 8791 case BD_ADDR_TYPE_LE_RANDOM: 8792 return GAP_CONNECTION_LE; 8793 case BD_ADDR_TYPE_SCO: 8794 return GAP_CONNECTION_SCO; 8795 case BD_ADDR_TYPE_ACL: 8796 return GAP_CONNECTION_ACL; 8797 default: 8798 return GAP_CONNECTION_INVALID; 8799 } 8800 } 8801 8802 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8803 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8804 if (!conn) return HCI_ROLE_INVALID; 8805 return (hci_role_t) conn->role; 8806 } 8807 8808 8809 #ifdef ENABLE_CLASSIC 8810 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8811 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8812 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8813 conn->request_role = role; 8814 hci_run(); 8815 return ERROR_CODE_SUCCESS; 8816 } 8817 #endif 8818 8819 #ifdef ENABLE_BLE 8820 8821 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint16_t phy_options){ 8822 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8823 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8824 8825 conn->le_phy_update_all_phys = all_phys; 8826 conn->le_phy_update_tx_phys = tx_phys; 8827 conn->le_phy_update_rx_phys = rx_phys; 8828 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8829 8830 hci_run(); 8831 8832 return 0; 8833 } 8834 8835 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8836 8837 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 8838 // incorrect configuration: 8839 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 8840 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 8841 btstack_assert(false); 8842 #endif 8843 8844 // check if already in list 8845 btstack_linked_list_iterator_t it; 8846 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8847 while (btstack_linked_list_iterator_has_next(&it)) { 8848 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8849 if (entry->address_type != address_type) { 8850 continue; 8851 } 8852 if (memcmp(entry->address, address, 6) != 0) { 8853 continue; 8854 } 8855 8856 // if already on controller: 8857 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8858 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8859 // drop remove request 8860 entry->state = LE_WHITELIST_ON_CONTROLLER; 8861 return ERROR_CODE_SUCCESS; 8862 } else { 8863 // disallow as already on controller 8864 return ERROR_CODE_COMMAND_DISALLOWED; 8865 } 8866 } 8867 8868 // assume scheduled to add 8869 return ERROR_CODE_COMMAND_DISALLOWED; 8870 } 8871 8872 // alloc and add to list 8873 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8874 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8875 entry->address_type = address_type; 8876 (void)memcpy(entry->address, address, 6); 8877 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8878 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8879 return ERROR_CODE_SUCCESS; 8880 } 8881 8882 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8883 btstack_linked_list_iterator_t it; 8884 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8885 while (btstack_linked_list_iterator_has_next(&it)){ 8886 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8887 if (entry->address_type != address_type) { 8888 continue; 8889 } 8890 if (memcmp(entry->address, address, 6) != 0) { 8891 continue; 8892 } 8893 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8894 // remove from controller if already present 8895 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8896 } else { 8897 // directly remove entry from whitelist 8898 btstack_linked_list_iterator_remove(&it); 8899 btstack_memory_whitelist_entry_free(entry); 8900 } 8901 return ERROR_CODE_SUCCESS; 8902 } 8903 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8904 } 8905 8906 static void hci_whitelist_clear(void){ 8907 btstack_linked_list_iterator_t it; 8908 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8909 while (btstack_linked_list_iterator_has_next(&it)){ 8910 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8911 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8912 // remove from controller if already present 8913 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8914 continue; 8915 } 8916 // directly remove entry from whitelist 8917 btstack_linked_list_iterator_remove(&it); 8918 btstack_memory_whitelist_entry_free(entry); 8919 } 8920 } 8921 8922 /** 8923 * @brief Clear Whitelist 8924 * @return 0 if ok 8925 */ 8926 uint8_t gap_whitelist_clear(void){ 8927 hci_whitelist_clear(); 8928 hci_run(); 8929 return ERROR_CODE_SUCCESS; 8930 } 8931 8932 /** 8933 * @brief Add Device to Whitelist 8934 * @param address_typ 8935 * @param address 8936 * @return 0 if ok 8937 */ 8938 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8939 uint8_t status = hci_whitelist_add(address_type, address); 8940 if (status){ 8941 return status; 8942 } 8943 hci_run(); 8944 return ERROR_CODE_SUCCESS; 8945 } 8946 8947 /** 8948 * @brief Remove Device from Whitelist 8949 * @param address_typ 8950 * @param address 8951 * @return 0 if ok 8952 */ 8953 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8954 uint8_t status = hci_whitelist_remove(address_type, address); 8955 if (status){ 8956 return status; 8957 } 8958 hci_run(); 8959 return ERROR_CODE_SUCCESS; 8960 } 8961 8962 #ifdef ENABLE_LE_CENTRAL 8963 /** 8964 * @brief Connect with Whitelist 8965 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8966 * @return - if ok 8967 */ 8968 uint8_t gap_connect_with_whitelist(void){ 8969 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8970 return ERROR_CODE_COMMAND_DISALLOWED; 8971 } 8972 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8973 hci_run(); 8974 return ERROR_CODE_SUCCESS; 8975 } 8976 8977 /** 8978 * @brief Auto Connection Establishment - Start Connecting to device 8979 * @param address_typ 8980 * @param address 8981 * @return 0 if ok 8982 */ 8983 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8984 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8985 return ERROR_CODE_COMMAND_DISALLOWED; 8986 } 8987 8988 uint8_t status = hci_whitelist_add(address_type, address); 8989 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8990 return status; 8991 } 8992 8993 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8994 8995 hci_run(); 8996 return ERROR_CODE_SUCCESS; 8997 } 8998 8999 /** 9000 * @brief Auto Connection Establishment - Stop Connecting to device 9001 * @param address_typ 9002 * @param address 9003 * @return 0 if ok 9004 */ 9005 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9006 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9007 return ERROR_CODE_COMMAND_DISALLOWED; 9008 } 9009 9010 hci_whitelist_remove(address_type, address); 9011 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9012 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9013 } 9014 hci_run(); 9015 return 0; 9016 } 9017 9018 /** 9019 * @brief Auto Connection Establishment - Stop everything 9020 * @note Convenience function to stop all active auto connection attempts 9021 */ 9022 uint8_t gap_auto_connection_stop_all(void){ 9023 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9024 return ERROR_CODE_COMMAND_DISALLOWED; 9025 } 9026 hci_whitelist_clear(); 9027 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9028 hci_run(); 9029 return ERROR_CODE_SUCCESS; 9030 } 9031 9032 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9033 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9034 if (!conn) return 0; 9035 return conn->le_connection_interval; 9036 } 9037 #endif 9038 #endif 9039 9040 #ifdef ENABLE_CLASSIC 9041 /** 9042 * @brief Set Extended Inquiry Response data 9043 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9044 * @note has to be done before stack starts up 9045 */ 9046 void gap_set_extended_inquiry_response(const uint8_t * data){ 9047 hci_stack->eir_data = data; 9048 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9049 hci_run(); 9050 } 9051 9052 /** 9053 * @brief Start GAP Classic Inquiry 9054 * @param duration in 1.28s units 9055 * @return 0 if ok 9056 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9057 */ 9058 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9059 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9060 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9061 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9062 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9063 } 9064 hci_stack->inquiry_state = duration_in_1280ms_units; 9065 hci_stack->inquiry_max_period_length = 0; 9066 hci_stack->inquiry_min_period_length = 0; 9067 hci_run(); 9068 return 0; 9069 } 9070 9071 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9072 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9073 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9074 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9075 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9076 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9077 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9078 9079 hci_stack->inquiry_state = duration; 9080 hci_stack->inquiry_max_period_length = max_period_length; 9081 hci_stack->inquiry_min_period_length = min_period_length; 9082 hci_run(); 9083 return 0; 9084 } 9085 9086 /** 9087 * @brief Stop GAP Classic Inquiry 9088 * @return 0 if ok 9089 */ 9090 int gap_inquiry_stop(void){ 9091 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9092 // emit inquiry complete event, before it even started 9093 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9094 hci_emit_event(event, sizeof(event), 1); 9095 return 0; 9096 } 9097 switch (hci_stack->inquiry_state){ 9098 case GAP_INQUIRY_STATE_ACTIVE: 9099 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9100 hci_run(); 9101 return ERROR_CODE_SUCCESS; 9102 case GAP_INQUIRY_STATE_PERIODIC: 9103 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9104 hci_run(); 9105 return ERROR_CODE_SUCCESS; 9106 default: 9107 return ERROR_CODE_COMMAND_DISALLOWED; 9108 } 9109 } 9110 9111 void gap_inquiry_set_lap(uint32_t lap){ 9112 hci_stack->inquiry_lap = lap; 9113 } 9114 9115 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9116 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9117 hci_stack->inquiry_scan_window = inquiry_scan_window; 9118 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9119 hci_run(); 9120 } 9121 9122 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9123 { 9124 hci_stack->inquiry_tx_power_level = tx_power; 9125 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9126 hci_run(); 9127 } 9128 9129 9130 /** 9131 * @brief Remote Name Request 9132 * @param addr 9133 * @param page_scan_repetition_mode 9134 * @param clock_offset only used when bit 15 is set 9135 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9136 */ 9137 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9138 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9139 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9140 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9141 hci_stack->remote_name_clock_offset = clock_offset; 9142 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9143 hci_run(); 9144 return 0; 9145 } 9146 9147 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9148 hci_stack->gap_pairing_state = state; 9149 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9150 hci_run(); 9151 return 0; 9152 } 9153 9154 /** 9155 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9156 * @param addr 9157 * @param pin_data 9158 * @param pin_len 9159 * @return 0 if ok 9160 */ 9161 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9162 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9163 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9164 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9165 hci_stack->gap_pairing_pin_len = pin_len; 9166 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9167 } 9168 9169 /** 9170 * @brief Legacy Pairing Pin Code Response 9171 * @param addr 9172 * @param pin 9173 * @return 0 if ok 9174 */ 9175 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9176 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9177 } 9178 9179 /** 9180 * @brief Abort Legacy Pairing 9181 * @param addr 9182 * @param pin 9183 * @return 0 if ok 9184 */ 9185 int gap_pin_code_negative(bd_addr_t addr){ 9186 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9187 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9188 } 9189 9190 /** 9191 * @brief SSP Passkey Response 9192 * @param addr 9193 * @param passkey 9194 * @return 0 if ok 9195 */ 9196 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9197 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9198 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9199 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9200 } 9201 9202 /** 9203 * @brief Abort SSP Passkey Entry/Pairing 9204 * @param addr 9205 * @param pin 9206 * @return 0 if ok 9207 */ 9208 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9209 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9210 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9211 } 9212 9213 /** 9214 * @brief Accept SSP Numeric Comparison 9215 * @param addr 9216 * @param passkey 9217 * @return 0 if ok 9218 */ 9219 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9220 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9221 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9222 } 9223 9224 /** 9225 * @brief Abort SSP Numeric Comparison/Pairing 9226 * @param addr 9227 * @param pin 9228 * @return 0 if ok 9229 */ 9230 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9231 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9232 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9233 } 9234 9235 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9236 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9237 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9238 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9239 connectionSetAuthenticationFlags(conn, flag); 9240 hci_run(); 9241 return ERROR_CODE_SUCCESS; 9242 } 9243 #endif 9244 9245 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9246 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9247 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9248 } 9249 9250 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9251 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9252 } 9253 #endif 9254 9255 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9256 /** 9257 * @brief Report Remote OOB Data 9258 * @param bd_addr 9259 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9260 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9261 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9262 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9263 */ 9264 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){ 9265 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9266 if (connection == NULL) { 9267 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9268 } 9269 connection->classic_oob_c_192 = c_192; 9270 connection->classic_oob_r_192 = r_192; 9271 9272 // ignore P-256 if not supported by us 9273 if (hci_stack->secure_connections_active){ 9274 connection->classic_oob_c_256 = c_256; 9275 connection->classic_oob_r_256 = r_256; 9276 } 9277 9278 return ERROR_CODE_SUCCESS; 9279 } 9280 /** 9281 * @brief Generate new OOB data 9282 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9283 */ 9284 void gap_ssp_generate_oob_data(void){ 9285 hci_stack->classic_read_local_oob_data = true; 9286 hci_run(); 9287 } 9288 9289 #endif 9290 9291 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9292 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9293 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9294 if (connection == NULL) { 9295 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9296 } 9297 9298 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9299 connection->link_key_type = type; 9300 9301 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9302 } 9303 9304 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9305 /** 9306 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9307 * @param inquiry_mode see bluetooth_defines.h 9308 */ 9309 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9310 hci_stack->inquiry_mode = inquiry_mode; 9311 } 9312 9313 /** 9314 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9315 */ 9316 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9317 hci_stack->sco_voice_setting = voice_setting; 9318 } 9319 9320 /** 9321 * @brief Get SCO Voice Setting 9322 * @return current voice setting 9323 */ 9324 uint16_t hci_get_sco_voice_setting(void){ 9325 return hci_stack->sco_voice_setting; 9326 } 9327 9328 static int hci_have_usb_transport(void){ 9329 if (!hci_stack->hci_transport) return 0; 9330 const char * transport_name = hci_stack->hci_transport->name; 9331 if (!transport_name) return 0; 9332 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9333 } 9334 9335 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9336 uint16_t sco_packet_length = 0; 9337 9338 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9339 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9340 int multiplier; 9341 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9342 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9343 multiplier = 2; 9344 } else { 9345 multiplier = 1; 9346 } 9347 #endif 9348 9349 #ifdef ENABLE_SCO_OVER_HCI 9350 if (hci_have_usb_transport()){ 9351 // see Core Spec for H2 USB Transfer. 9352 // 3 byte SCO header + 24 bytes per connection 9353 // @note multiple sco connections not supported currently 9354 sco_packet_length = 3 + 24 * multiplier; 9355 } else { 9356 // 3 byte SCO header + SCO packet length over the air 9357 sco_packet_length = 3 + payload_size * multiplier; 9358 // assert that it still fits inside an SCO buffer 9359 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9360 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9361 } 9362 } 9363 #endif 9364 #ifdef HAVE_SCO_TRANSPORT 9365 // 3 byte SCO header + SCO packet length over the air 9366 sco_packet_length = 3 + payload_size * multiplier; 9367 // assert that it still fits inside an SCO buffer 9368 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9369 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9370 } 9371 #endif 9372 return sco_packet_length; 9373 } 9374 9375 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9376 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9377 if (connection != NULL){ 9378 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9379 } 9380 return 0; 9381 } 9382 9383 uint16_t hci_get_sco_packet_length(void){ 9384 btstack_linked_list_iterator_t it; 9385 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9386 while (btstack_linked_list_iterator_has_next(&it)){ 9387 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9388 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9389 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9390 } 9391 } 9392 return 0; 9393 } 9394 9395 /** 9396 * @brief Sets the master/slave policy 9397 * @param policy (0: attempt to become master, 1: let connecting device decide) 9398 */ 9399 void hci_set_master_slave_policy(uint8_t policy){ 9400 hci_stack->master_slave_policy = policy; 9401 } 9402 9403 #endif 9404 9405 HCI_STATE hci_get_state(void){ 9406 return hci_stack->state; 9407 } 9408 9409 #ifdef ENABLE_CLASSIC 9410 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9411 hci_stack->gap_classic_accept_callback = accept_callback; 9412 } 9413 #endif 9414 9415 /** 9416 * @brief Set callback for Bluetooth Hardware Error 9417 */ 9418 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9419 hci_stack->hardware_error_callback = fn; 9420 } 9421 9422 void hci_disconnect_all(void){ 9423 btstack_linked_list_iterator_t it; 9424 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9425 while (btstack_linked_list_iterator_has_next(&it)){ 9426 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9427 if (con->state == SENT_DISCONNECT) continue; 9428 con->state = SEND_DISCONNECT; 9429 } 9430 hci_run(); 9431 } 9432 9433 uint16_t hci_get_manufacturer(void){ 9434 return hci_stack->manufacturer; 9435 } 9436 9437 #ifdef ENABLE_BLE 9438 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9439 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9440 if (!hci_con) return NULL; 9441 return &hci_con->sm_connection; 9442 } 9443 9444 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9445 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9446 #endif 9447 9448 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9449 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9450 if (hci_connection == NULL) return 0; 9451 if (hci_is_le_connection(hci_connection)){ 9452 #ifdef ENABLE_BLE 9453 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9454 if (sm_conn->sm_connection_encrypted) { 9455 return sm_conn->sm_actual_encryption_key_size; 9456 } 9457 #endif 9458 } else { 9459 #ifdef ENABLE_CLASSIC 9460 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9461 return hci_connection->encryption_key_size; 9462 } 9463 #endif 9464 } 9465 return 0; 9466 } 9467 9468 bool gap_authenticated(hci_con_handle_t con_handle){ 9469 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9470 if (hci_connection == NULL) return false; 9471 9472 switch (hci_connection->address_type){ 9473 #ifdef ENABLE_BLE 9474 case BD_ADDR_TYPE_LE_PUBLIC: 9475 case BD_ADDR_TYPE_LE_RANDOM: 9476 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9477 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9478 #endif 9479 #ifdef ENABLE_CLASSIC 9480 case BD_ADDR_TYPE_SCO: 9481 case BD_ADDR_TYPE_ACL: 9482 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9483 #endif 9484 default: 9485 return false; 9486 } 9487 } 9488 9489 bool gap_secure_connection(hci_con_handle_t con_handle){ 9490 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9491 if (hci_connection == NULL) return 0; 9492 9493 switch (hci_connection->address_type){ 9494 #ifdef ENABLE_BLE 9495 case BD_ADDR_TYPE_LE_PUBLIC: 9496 case BD_ADDR_TYPE_LE_RANDOM: 9497 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9498 return hci_connection->sm_connection.sm_connection_sc != 0; 9499 #endif 9500 #ifdef ENABLE_CLASSIC 9501 case BD_ADDR_TYPE_SCO: 9502 case BD_ADDR_TYPE_ACL: 9503 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9504 #endif 9505 default: 9506 return false; 9507 } 9508 } 9509 9510 bool gap_bonded(hci_con_handle_t con_handle){ 9511 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9512 if (hci_connection == NULL) return 0; 9513 9514 #ifdef ENABLE_CLASSIC 9515 link_key_t link_key; 9516 link_key_type_t link_key_type; 9517 #endif 9518 switch (hci_connection->address_type){ 9519 #ifdef ENABLE_BLE 9520 case BD_ADDR_TYPE_LE_PUBLIC: 9521 case BD_ADDR_TYPE_LE_RANDOM: 9522 return hci_connection->sm_connection.sm_le_db_index >= 0; 9523 #endif 9524 #ifdef ENABLE_CLASSIC 9525 case BD_ADDR_TYPE_SCO: 9526 case BD_ADDR_TYPE_ACL: 9527 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9528 #endif 9529 default: 9530 return false; 9531 } 9532 } 9533 9534 #ifdef ENABLE_BLE 9535 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9536 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9537 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9538 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9539 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9540 return sm_conn->sm_connection_authorization_state; 9541 } 9542 #endif 9543 9544 #ifdef ENABLE_CLASSIC 9545 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){ 9546 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9547 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9548 conn->sniff_min_interval = sniff_min_interval; 9549 conn->sniff_max_interval = sniff_max_interval; 9550 conn->sniff_attempt = sniff_attempt; 9551 conn->sniff_timeout = sniff_timeout; 9552 hci_run(); 9553 return 0; 9554 } 9555 9556 /** 9557 * @brief Exit Sniff mode 9558 * @param con_handle 9559 @ @return 0 if ok 9560 */ 9561 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9562 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9563 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9564 conn->sniff_min_interval = 0xffff; 9565 hci_run(); 9566 return 0; 9567 } 9568 9569 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){ 9570 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9571 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9572 conn->sniff_subrating_max_latency = max_latency; 9573 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9574 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9575 hci_run(); 9576 return ERROR_CODE_SUCCESS; 9577 } 9578 9579 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){ 9580 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9581 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9582 conn->qos_service_type = service_type; 9583 conn->qos_token_rate = token_rate; 9584 conn->qos_peak_bandwidth = peak_bandwidth; 9585 conn->qos_latency = latency; 9586 conn->qos_delay_variation = delay_variation; 9587 hci_run(); 9588 return ERROR_CODE_SUCCESS; 9589 } 9590 9591 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9592 hci_stack->new_page_scan_interval = page_scan_interval; 9593 hci_stack->new_page_scan_window = page_scan_window; 9594 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9595 hci_run(); 9596 } 9597 9598 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9599 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9600 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9601 hci_run(); 9602 } 9603 9604 void gap_set_page_timeout(uint16_t page_timeout){ 9605 hci_stack->page_timeout = page_timeout; 9606 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9607 hci_run(); 9608 } 9609 9610 #endif 9611 9612 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9613 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9614 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9615 if (le_device_db_index >= le_device_db_max_count()) return; 9616 uint8_t offset = le_device_db_index >> 3; 9617 uint8_t mask = 1 << (le_device_db_index & 7); 9618 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9619 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9620 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9621 // note: go back to remove entries, otherwise, a remove + add will skip the add 9622 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9623 } 9624 } 9625 9626 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9627 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9628 if (le_device_db_index >= le_device_db_max_count()) return; 9629 uint8_t offset = le_device_db_index >> 3; 9630 uint8_t mask = 1 << (le_device_db_index & 7); 9631 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9632 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9633 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9634 } 9635 } 9636 9637 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9638 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9639 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9640 } 9641 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9642 // restart le resolving list update 9643 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9644 } 9645 return ERROR_CODE_SUCCESS; 9646 } 9647 9648 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9649 hci_stack->le_privacy_mode = privacy_mode; 9650 } 9651 #endif 9652 9653 #ifdef ENABLE_BLE 9654 #ifdef ENABLE_LE_CENTRAL 9655 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9656 9657 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9658 9659 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9660 // incorrect configuration: 9661 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9662 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9663 btstack_assert(false); 9664 #endif 9665 9666 // check if already in list 9667 btstack_linked_list_iterator_t it; 9668 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9669 while (btstack_linked_list_iterator_has_next(&it)) { 9670 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9671 if (entry->sid != advertising_sid) { 9672 continue; 9673 } 9674 if (entry->address_type != address_type) { 9675 continue; 9676 } 9677 if (memcmp(entry->address, address, 6) != 0) { 9678 continue; 9679 } 9680 // disallow if already scheduled to add 9681 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9682 return ERROR_CODE_COMMAND_DISALLOWED; 9683 } 9684 // still on controller, but scheduled to remove -> re-add 9685 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9686 return ERROR_CODE_SUCCESS; 9687 } 9688 // alloc and add to list 9689 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9690 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9691 entry->sid = advertising_sid; 9692 entry->address_type = address_type; 9693 (void)memcpy(entry->address, address, 6); 9694 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9695 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9696 return ERROR_CODE_SUCCESS; 9697 } 9698 9699 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9700 btstack_linked_list_iterator_t it; 9701 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9702 while (btstack_linked_list_iterator_has_next(&it)){ 9703 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9704 if (entry->sid != advertising_sid) { 9705 continue; 9706 } 9707 if (entry->address_type != address_type) { 9708 continue; 9709 } 9710 if (memcmp(entry->address, address, 6) != 0) { 9711 continue; 9712 } 9713 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9714 // remove from controller if already present 9715 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9716 } else { 9717 // directly remove entry from whitelist 9718 btstack_linked_list_iterator_remove(&it); 9719 btstack_memory_periodic_advertiser_list_entry_free(entry); 9720 } 9721 return ERROR_CODE_SUCCESS; 9722 } 9723 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9724 } 9725 9726 static void hci_periodic_advertiser_list_clear(void){ 9727 btstack_linked_list_iterator_t it; 9728 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9729 while (btstack_linked_list_iterator_has_next(&it)){ 9730 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9731 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9732 // remove from controller if already present 9733 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9734 continue; 9735 } 9736 // directly remove entry from whitelist 9737 btstack_linked_list_iterator_remove(&it); 9738 btstack_memory_periodic_advertiser_list_entry_free(entry); 9739 } 9740 } 9741 9742 uint8_t gap_periodic_advertiser_list_clear(void){ 9743 hci_periodic_advertiser_list_clear(); 9744 hci_run(); 9745 return ERROR_CODE_SUCCESS; 9746 } 9747 9748 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9749 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9750 if (status){ 9751 return status; 9752 } 9753 hci_run(); 9754 return ERROR_CODE_SUCCESS; 9755 } 9756 9757 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9758 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9759 if (status){ 9760 return status; 9761 } 9762 hci_run(); 9763 return ERROR_CODE_SUCCESS; 9764 } 9765 9766 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9767 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9768 // abort if already active 9769 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9770 return ERROR_CODE_COMMAND_DISALLOWED; 9771 } 9772 // store request 9773 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9774 hci_stack->le_periodic_sync_options = options; 9775 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9776 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9777 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9778 hci_stack->le_periodic_sync_skip = skip; 9779 hci_stack->le_periodic_sync_timeout = sync_timeout; 9780 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9781 9782 hci_run(); 9783 return ERROR_CODE_SUCCESS; 9784 } 9785 9786 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9787 // abort if not requested 9788 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9789 return ERROR_CODE_COMMAND_DISALLOWED; 9790 } 9791 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9792 hci_run(); 9793 return ERROR_CODE_SUCCESS; 9794 } 9795 9796 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9797 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9798 return ERROR_CODE_COMMAND_DISALLOWED; 9799 } 9800 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9801 hci_run(); 9802 return ERROR_CODE_SUCCESS; 9803 } 9804 9805 #endif 9806 #endif 9807 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9808 static hci_iso_stream_t * 9809 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9810 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9811 if (iso_stream != NULL){ 9812 iso_stream->iso_type = iso_type; 9813 iso_stream->state = state; 9814 iso_stream->group_id = group_id; 9815 iso_stream->stream_id = stream_id; 9816 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9817 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9818 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9819 } 9820 return iso_stream; 9821 } 9822 9823 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9824 btstack_linked_list_iterator_t it; 9825 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9826 while (btstack_linked_list_iterator_has_next(&it)){ 9827 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9828 if (iso_stream->cis_handle == con_handle ) { 9829 return iso_stream; 9830 } 9831 } 9832 return NULL; 9833 } 9834 9835 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9836 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9837 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9838 btstack_memory_hci_iso_stream_free(iso_stream); 9839 } 9840 9841 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9842 btstack_linked_list_iterator_t it; 9843 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9844 while (btstack_linked_list_iterator_has_next(&it)){ 9845 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9846 if ((iso_stream->group_id == group_id) && 9847 (iso_stream->iso_type == iso_type)){ 9848 btstack_linked_list_iterator_remove(&it); 9849 btstack_memory_hci_iso_stream_free(iso_stream); 9850 } 9851 } 9852 } 9853 9854 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9855 btstack_linked_list_iterator_t it; 9856 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9857 while (btstack_linked_list_iterator_has_next(&it)){ 9858 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9859 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9860 (iso_stream->group_id == group_id)){ 9861 btstack_linked_list_iterator_remove(&it); 9862 btstack_memory_hci_iso_stream_free(iso_stream); 9863 } 9864 } 9865 } 9866 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9867 btstack_linked_list_iterator_t it; 9868 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9869 while (btstack_linked_list_iterator_has_next(&it)){ 9870 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9871 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9872 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9873 } 9874 } 9875 } 9876 9877 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9878 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9879 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9880 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9881 return (sdu_len_offset + 2 + sdu_len) == size; 9882 } 9883 9884 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 9885 if (iso_stream == NULL){ 9886 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 9887 return; 9888 } 9889 9890 if (hci_stack->iso_packet_handler == NULL) { 9891 return; 9892 } 9893 9894 // parse header 9895 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 9896 uint16_t data_total_length = little_endian_read_16(packet, 2); 9897 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 9898 9899 // assert packet is complete 9900 if ((data_total_length + 4u) != size){ 9901 return; 9902 } 9903 9904 if ((pb_flag & 0x01) == 0){ 9905 if (pb_flag == 0x02){ 9906 // The ISO_SDU_Fragment field contains a header and a complete SDU. 9907 if (hci_iso_sdu_complete(packet, size)) { 9908 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9909 } 9910 } else { 9911 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9912 if (size > sizeof(iso_stream->reassembly_buffer)){ 9913 return; 9914 } 9915 memcpy(iso_stream->reassembly_buffer, packet, size); 9916 // fix pb_flag 9917 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9918 iso_stream->reassembly_pos = size; 9919 } 9920 } else { 9921 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 9922 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 9923 if (ts_flag != 0){ 9924 return; 9925 } 9926 // append fragment 9927 if (iso_stream->reassembly_pos == 0){ 9928 return; 9929 } 9930 9931 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 9932 // reset reassembly buffer 9933 iso_stream->reassembly_pos = 0; 9934 return; 9935 } 9936 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 9937 iso_stream->reassembly_pos += data_total_length; 9938 9939 // deliver if last fragment and SDU complete 9940 if (pb_flag == 0x03){ 9941 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9942 // fix data_total_length 9943 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 9944 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9945 } 9946 // reset reassembly buffer 9947 iso_stream->reassembly_pos = 0; 9948 } 9949 } 9950 } 9951 9952 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9953 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9954 uint16_t pos = 0; 9955 event[pos++] = HCI_EVENT_META_GAP; 9956 event[pos++] = 4 + (2 * big->num_bis); 9957 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9958 event[pos++] = status; 9959 event[pos++] = big->big_handle; 9960 event[pos++] = big->num_bis; 9961 uint8_t i; 9962 for (i=0;i<big->num_bis;i++){ 9963 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9964 pos += 2; 9965 } 9966 hci_emit_event(event, pos, 0); 9967 } 9968 9969 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9970 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9971 uint16_t pos = 0; 9972 event[pos++] = HCI_EVENT_META_GAP; 9973 event[pos++] = 4 + (2 * cig->num_cis); 9974 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9975 event[pos++] = status; 9976 event[pos++] = cig->cig_id; 9977 event[pos++] = cig->num_cis; 9978 uint8_t i; 9979 for (i=0;i<cig->num_cis;i++){ 9980 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9981 pos += 2; 9982 } 9983 hci_emit_event(event, pos, 0); 9984 } 9985 9986 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 9987 uint16_t pos = 0; 9988 event[pos++] = HCI_EVENT_META_GAP; 9989 event[pos++] = 8; 9990 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9991 event[pos++] = status; 9992 event[pos++] = iso_stream->group_id; 9993 event[pos++] = iso_stream->stream_id; 9994 little_endian_store_16(event, pos, iso_stream->cis_handle); 9995 pos += 2; 9996 little_endian_store_16(event, pos, iso_stream->acl_handle); 9997 pos += 2; 9998 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 9999 pos += 2; 10000 event[pos++] = iso_stream->number_of_subevents; 10001 event[pos++] = iso_stream->burst_number_c_to_p; 10002 event[pos++] = iso_stream->burst_number_p_to_c; 10003 event[pos++] = iso_stream->flush_timeout_c_to_p; 10004 event[pos++] = iso_stream->flush_timeout_p_to_c; 10005 return pos; 10006 } 10007 10008 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10009 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10010 // cache data before finalizing struct 10011 uint8_t event [17]; 10012 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10013 btstack_assert(pos <= sizeof(event)); 10014 if (status != ERROR_CODE_SUCCESS){ 10015 hci_iso_stream_finalize(iso_stream); 10016 } 10017 hci_emit_event(event, pos, 0); 10018 } 10019 10020 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10021 uint8_t event [4]; 10022 uint16_t pos = 0; 10023 event[pos++] = HCI_EVENT_META_GAP; 10024 event[pos++] = 2; 10025 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10026 event[pos++] = big->big_handle; 10027 hci_emit_event(event, pos, 0); 10028 } 10029 10030 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10031 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10032 uint16_t pos = 0; 10033 event[pos++] = HCI_EVENT_META_GAP; 10034 event[pos++] = 4; 10035 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10036 event[pos++] = status; 10037 event[pos++] = big_sync->big_handle; 10038 event[pos++] = big_sync->num_bis; 10039 uint8_t i; 10040 for (i=0;i<big_sync->num_bis;i++){ 10041 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10042 pos += 2; 10043 } 10044 hci_emit_event(event, pos, 0); 10045 } 10046 10047 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10048 uint8_t event [4]; 10049 uint16_t pos = 0; 10050 event[pos++] = HCI_EVENT_META_GAP; 10051 event[pos++] = 2; 10052 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10053 event[pos++] = big_handle; 10054 hci_emit_event(event, pos, 0); 10055 } 10056 10057 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10058 uint8_t event[6]; 10059 uint16_t pos = 0; 10060 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10061 event[pos++] = sizeof(event) - 2; 10062 event[pos++] = big->big_handle; 10063 event[pos++] = bis_index; 10064 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10065 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10066 } 10067 10068 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10069 uint8_t event[4]; 10070 uint16_t pos = 0; 10071 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10072 event[pos++] = sizeof(event) - 2; 10073 little_endian_store_16(event, pos, cis_con_handle); 10074 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10075 } 10076 10077 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10078 btstack_linked_list_iterator_t it; 10079 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10080 while (btstack_linked_list_iterator_has_next(&it)){ 10081 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10082 if ( big->big_handle == big_handle ) { 10083 return big; 10084 } 10085 } 10086 return NULL; 10087 } 10088 10089 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10090 btstack_linked_list_iterator_t it; 10091 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10092 while (btstack_linked_list_iterator_has_next(&it)){ 10093 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10094 if ( big_sync->big_handle == big_handle ) { 10095 return big_sync; 10096 } 10097 } 10098 return NULL; 10099 } 10100 10101 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10102 hci_stack->iso_packets_to_queue = num_packets; 10103 } 10104 10105 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10106 btstack_linked_list_iterator_t it; 10107 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10108 while (btstack_linked_list_iterator_has_next(&it)){ 10109 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10110 if ( cig->cig_id == cig_id ) { 10111 return cig; 10112 } 10113 } 10114 return NULL; 10115 } 10116 10117 static void hci_iso_notify_can_send_now(void){ 10118 10119 // BIG 10120 10121 btstack_linked_list_iterator_t it; 10122 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10123 while (btstack_linked_list_iterator_has_next(&it)){ 10124 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10125 // track number completed packet timestamps 10126 if (big->num_completed_timestamp_current_valid){ 10127 big->num_completed_timestamp_current_valid = false; 10128 if (big->num_completed_timestamp_previous_valid){ 10129 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10130 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10131 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10132 big->num_completed_timestamp_previous_ms); 10133 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10134 // to catch up, skip packet on all BIS 10135 uint8_t i; 10136 for (i=0;i<big->num_bis;i++){ 10137 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10138 if (iso_stream){ 10139 iso_stream->num_packets_to_skip++; 10140 } 10141 } 10142 } 10143 } 10144 big->num_completed_timestamp_previous_valid = true; 10145 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10146 } 10147 10148 if (big->can_send_now_requested){ 10149 // check if no outgoing iso packets pending and no can send now have to be emitted 10150 uint8_t i; 10151 bool can_send = true; 10152 uint8_t num_iso_queued_minimum = 0; 10153 for (i=0;i<big->num_bis;i++){ 10154 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10155 if (iso_stream == NULL) continue; 10156 // handle case where individual ISO packet was sent too late: 10157 // for each additionally queued packet, a new one needs to get skipped 10158 if (i==0){ 10159 num_iso_queued_minimum = iso_stream->num_packets_sent; 10160 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10161 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10162 iso_stream->num_packets_to_skip += num_packets_to_skip; 10163 iso_stream->num_packets_sent -= num_packets_to_skip; 10164 } 10165 // check if we can send now 10166 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10167 can_send = false; 10168 break; 10169 } 10170 } 10171 if (can_send){ 10172 // propagate can send now to individual streams 10173 big->can_send_now_requested = false; 10174 for (i=0;i<big->num_bis;i++){ 10175 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10176 iso_stream->emit_ready_to_send = true; 10177 } 10178 } 10179 } 10180 } 10181 10182 if (hci_stack->hci_packet_buffer_reserved) return; 10183 10184 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10185 while (btstack_linked_list_iterator_has_next(&it)){ 10186 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10187 // report bis ready 10188 uint8_t i; 10189 for (i=0;i<big->num_bis;i++){ 10190 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10191 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10192 iso_stream->emit_ready_to_send = false; 10193 hci_emit_bis_can_send_now(big, i); 10194 break; 10195 } 10196 } 10197 } 10198 10199 // CIS 10200 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10201 while (btstack_linked_list_iterator_has_next(&it)) { 10202 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10203 if ((iso_stream->can_send_now_requested) && 10204 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10205 iso_stream->can_send_now_requested = false; 10206 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10207 } 10208 } 10209 } 10210 10211 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10212 if (hci_big_for_handle(big_params->big_handle) != NULL){ 10213 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10214 } 10215 if (big_params->num_bis == 0){ 10216 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10217 } 10218 if (big_params->num_bis > MAX_NR_BIS){ 10219 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10220 } 10221 10222 // reserve ISO Streams 10223 uint8_t i; 10224 uint8_t status = ERROR_CODE_SUCCESS; 10225 for (i=0;i<big_params->num_bis;i++){ 10226 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 10227 if (iso_stream == NULL) { 10228 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10229 break; 10230 } 10231 } 10232 10233 // free structs on error 10234 if (status != ERROR_CODE_SUCCESS){ 10235 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 10236 return status; 10237 } 10238 10239 le_audio_big_t * big = storage; 10240 big->big_handle = big_params->big_handle; 10241 big->params = big_params; 10242 big->state = LE_AUDIO_BIG_STATE_CREATE; 10243 big->num_bis = big_params->num_bis; 10244 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10245 10246 hci_run(); 10247 10248 return ERROR_CODE_SUCCESS; 10249 } 10250 10251 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10252 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 10253 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10254 } 10255 if (big_sync_params->num_bis == 0){ 10256 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10257 } 10258 if (big_sync_params->num_bis > MAX_NR_BIS){ 10259 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10260 } 10261 10262 le_audio_big_sync_t * big_sync = storage; 10263 big_sync->big_handle = big_sync_params->big_handle; 10264 big_sync->params = big_sync_params; 10265 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10266 big_sync->num_bis = big_sync_params->num_bis; 10267 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10268 10269 hci_run(); 10270 10271 return ERROR_CODE_SUCCESS; 10272 } 10273 10274 uint8_t gap_big_terminate(uint8_t big_handle){ 10275 le_audio_big_t * big = hci_big_for_handle(big_handle); 10276 if (big == NULL){ 10277 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10278 } 10279 switch (big->state){ 10280 case LE_AUDIO_BIG_STATE_CREATE: 10281 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10282 hci_emit_big_terminated(big); 10283 break; 10284 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10285 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10286 break; 10287 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10288 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10289 case LE_AUDIO_BIG_STATE_ACTIVE: 10290 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10291 hci_run(); 10292 break; 10293 default: 10294 return ERROR_CODE_COMMAND_DISALLOWED; 10295 } 10296 return ERROR_CODE_SUCCESS; 10297 } 10298 10299 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10300 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10301 if (big_sync == NULL){ 10302 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10303 } 10304 switch (big_sync->state){ 10305 case LE_AUDIO_BIG_STATE_CREATE: 10306 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10307 hci_emit_big_sync_stopped(big_handle); 10308 break; 10309 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10310 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10311 break; 10312 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10313 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10314 case LE_AUDIO_BIG_STATE_ACTIVE: 10315 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10316 hci_run(); 10317 break; 10318 default: 10319 return ERROR_CODE_COMMAND_DISALLOWED; 10320 } 10321 return ERROR_CODE_SUCCESS; 10322 } 10323 10324 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10325 le_audio_big_t * big = hci_big_for_handle(big_handle); 10326 if (big == NULL){ 10327 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10328 } 10329 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10330 return ERROR_CODE_COMMAND_DISALLOWED; 10331 } 10332 big->can_send_now_requested = true; 10333 hci_iso_notify_can_send_now(); 10334 return ERROR_CODE_SUCCESS; 10335 } 10336 10337 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10338 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10339 if (iso_stream == NULL){ 10340 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10341 } 10342 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10343 return ERROR_CODE_COMMAND_DISALLOWED; 10344 } 10345 iso_stream->can_send_now_requested = true; 10346 hci_iso_notify_can_send_now(); 10347 return ERROR_CODE_SUCCESS; 10348 } 10349 10350 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10351 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10352 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10353 } 10354 if (cig_params->num_cis == 0){ 10355 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10356 } 10357 if (cig_params->num_cis > MAX_NR_BIS){ 10358 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10359 } 10360 10361 // reserve ISO Streams 10362 uint8_t i; 10363 uint8_t status = ERROR_CODE_SUCCESS; 10364 for (i=0;i<cig_params->num_cis;i++){ 10365 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10366 if (iso_stream == NULL) { 10367 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10368 break; 10369 } 10370 } 10371 10372 // free structs on error 10373 if (status != ERROR_CODE_SUCCESS){ 10374 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10375 return status; 10376 } 10377 10378 le_audio_cig_t * cig = storage; 10379 cig->cig_id = cig_params->cig_id; 10380 cig->num_cis = cig_params->num_cis; 10381 cig->params = cig_params; 10382 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10383 for (i=0;i<cig->num_cis;i++){ 10384 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10385 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10386 cig->cis_setup_active[i] = false; 10387 cig->cis_established[i] = false; 10388 } 10389 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10390 10391 hci_run(); 10392 10393 return ERROR_CODE_SUCCESS; 10394 } 10395 10396 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10397 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10398 if (cig == NULL){ 10399 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10400 } 10401 10402 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10403 return ERROR_CODE_COMMAND_DISALLOWED; 10404 } 10405 10406 // store ACL Connection Handles 10407 uint8_t i; 10408 for (i=0;i<cig->num_cis;i++){ 10409 // check that all con handles exist and store 10410 hci_con_handle_t cis_handle = cis_con_handles[i]; 10411 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10412 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10413 } 10414 uint8_t j; 10415 bool found = false; 10416 for (j=0;j<cig->num_cis;j++){ 10417 if (cig->cis_con_handles[j] == cis_handle){ 10418 cig->acl_con_handles[j] = acl_con_handles[j]; 10419 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10420 btstack_assert(iso_stream != NULL); 10421 iso_stream->acl_handle = acl_con_handles[j]; 10422 found = true; 10423 break; 10424 } 10425 } 10426 if (!found){ 10427 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10428 } 10429 } 10430 10431 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10432 hci_run(); 10433 10434 return ERROR_CODE_SUCCESS; 10435 } 10436 10437 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10438 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10439 if (iso_stream == NULL){ 10440 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10441 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10442 } 10443 10444 // set next state and continue 10445 iso_stream->state = state; 10446 hci_run(); 10447 return ERROR_CODE_SUCCESS; 10448 } 10449 10450 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10451 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10452 } 10453 10454 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10455 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10456 } 10457 10458 10459 #endif 10460 #endif /* ENABLE_BLE */ 10461 10462 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10463 void hci_setup_test_connections_fuzz(void){ 10464 hci_connection_t * conn; 10465 10466 // default address: 66:55:44:33:00:01 10467 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10468 10469 // setup Controller info 10470 hci_stack->num_cmd_packets = 255; 10471 hci_stack->acl_packets_total_num = 255; 10472 10473 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10474 addr[5] = 0x01; 10475 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10476 conn->con_handle = addr[5]; 10477 conn->state = RECEIVED_CONNECTION_REQUEST; 10478 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10479 10480 // setup incoming Classic SCO connection with con handle 0x0002 10481 addr[5] = 0x02; 10482 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10483 conn->con_handle = addr[5]; 10484 conn->state = RECEIVED_CONNECTION_REQUEST; 10485 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10486 10487 // setup ready Classic ACL connection with con handle 0x0003 10488 addr[5] = 0x03; 10489 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10490 conn->con_handle = addr[5]; 10491 conn->state = OPEN; 10492 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10493 10494 // setup ready Classic SCO connection with con handle 0x0004 10495 addr[5] = 0x04; 10496 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10497 conn->con_handle = addr[5]; 10498 conn->state = OPEN; 10499 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10500 10501 // setup ready LE ACL connection with con handle 0x005 and public address 10502 addr[5] = 0x05; 10503 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10504 conn->con_handle = addr[5]; 10505 conn->state = OPEN; 10506 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10507 conn->sm_connection.sm_connection_encrypted = 1; 10508 } 10509 10510 void hci_free_connections_fuzz(void){ 10511 btstack_linked_list_iterator_t it; 10512 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10513 while (btstack_linked_list_iterator_has_next(&it)){ 10514 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10515 btstack_linked_list_iterator_remove(&it); 10516 btstack_memory_hci_connection_free(con); 10517 } 10518 } 10519 void hci_simulate_working_fuzz(void){ 10520 hci_stack->le_scanning_param_update = false; 10521 hci_init_done(); 10522 hci_stack->num_cmd_packets = 255; 10523 } 10524 #endif 10525