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 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2276 break; 2277 } 2278 #endif 2279 2280 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2281 /* fall through */ 2282 2283 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2284 if (hci_le_supported() 2285 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2286 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2287 hci_send_cmd(&hci_le_read_maximum_data_length); 2288 break; 2289 } 2290 2291 /* fall through */ 2292 2293 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2294 if (hci_le_supported() 2295 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2296 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2297 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2298 break; 2299 } 2300 #endif 2301 2302 #ifdef ENABLE_LE_CENTRAL 2303 /* fall through */ 2304 2305 case HCI_INIT_READ_WHITE_LIST_SIZE: 2306 if (hci_le_supported()){ 2307 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2308 hci_send_cmd(&hci_le_read_white_list_size); 2309 break; 2310 } 2311 2312 #endif 2313 2314 #ifdef ENABLE_LE_PERIPHERAL 2315 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2316 /* fall through */ 2317 2318 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2319 if (hci_extended_advertising_supported()){ 2320 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2321 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2322 break; 2323 } 2324 #endif 2325 #endif 2326 /* fall through */ 2327 2328 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2329 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2330 if (hci_le_supported()) { 2331 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2332 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2333 break; 2334 } 2335 #endif 2336 2337 /* fall through */ 2338 2339 case HCI_INIT_DONE: 2340 hci_stack->substate = HCI_INIT_DONE; 2341 // main init sequence complete 2342 #ifdef ENABLE_CLASSIC 2343 // check if initial Classic GAP Tasks are completed 2344 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2345 hci_run_gap_tasks_classic(); 2346 break; 2347 } 2348 #endif 2349 #ifdef ENABLE_BLE 2350 #ifdef ENABLE_LE_CENTRAL 2351 // check if initial LE GAP Tasks are completed 2352 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2353 hci_run_general_gap_le(); 2354 break; 2355 } 2356 #endif 2357 #endif 2358 hci_init_done(); 2359 break; 2360 2361 default: 2362 return; 2363 } 2364 } 2365 2366 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2367 bool command_completed = false; 2368 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2369 uint16_t opcode = little_endian_read_16(packet,3); 2370 if (opcode == hci_stack->last_cmd_opcode){ 2371 command_completed = true; 2372 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2373 } else { 2374 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2375 } 2376 } 2377 2378 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2379 uint8_t status = packet[2]; 2380 uint16_t opcode = little_endian_read_16(packet,4); 2381 if (opcode == hci_stack->last_cmd_opcode){ 2382 if (status){ 2383 command_completed = true; 2384 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2385 } else { 2386 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2387 } 2388 } else { 2389 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2390 } 2391 } 2392 #ifndef HAVE_HOST_CONTROLLER_API 2393 // Vendor == CSR 2394 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2395 // TODO: track actual command 2396 command_completed = true; 2397 } 2398 2399 // Vendor == Toshiba 2400 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2401 // TODO: track actual command 2402 command_completed = true; 2403 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2404 hci_stack->num_cmd_packets = 1; 2405 } 2406 #endif 2407 2408 return command_completed; 2409 } 2410 2411 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2412 2413 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2414 2415 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2416 2417 #ifndef HAVE_HOST_CONTROLLER_API 2418 2419 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2420 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2421 // 2422 // HCI Reset 2423 // Timeout 100 ms 2424 // HCI Reset 2425 // Command Complete Reset 2426 // HCI Read Local Version Information 2427 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2428 // hang... 2429 // 2430 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2431 if (!command_completed 2432 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2433 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2434 2435 uint16_t opcode = little_endian_read_16(packet,3); 2436 if (opcode == hci_reset.opcode){ 2437 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2438 return; 2439 } 2440 } 2441 2442 // CSR & H5 2443 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2444 if (!command_completed 2445 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2446 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2447 2448 uint16_t opcode = little_endian_read_16(packet,3); 2449 if (opcode == hci_reset.opcode){ 2450 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2451 return; 2452 } 2453 } 2454 2455 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2456 // fix: Correct substate and behave as command below 2457 if (command_completed){ 2458 switch (hci_stack->substate){ 2459 case HCI_INIT_SEND_RESET: 2460 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2461 break; 2462 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2463 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2464 break; 2465 default: 2466 break; 2467 } 2468 } 2469 2470 #endif 2471 2472 if (!command_completed) return; 2473 2474 bool need_baud_change = false; 2475 bool need_addr_change = false; 2476 2477 #ifndef HAVE_HOST_CONTROLLER_API 2478 need_baud_change = hci_stack->config 2479 && hci_stack->chipset 2480 && hci_stack->chipset->set_baudrate_command 2481 && hci_stack->hci_transport->set_baudrate 2482 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2483 2484 need_addr_change = hci_stack->custom_bd_addr_set 2485 && hci_stack->chipset 2486 && hci_stack->chipset->set_bd_addr_command; 2487 #endif 2488 2489 switch(hci_stack->substate){ 2490 2491 #ifndef HAVE_HOST_CONTROLLER_API 2492 case HCI_INIT_SEND_RESET: 2493 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2494 // fix: just correct substate and behave as command below 2495 2496 /* fall through */ 2497 #endif 2498 2499 case HCI_INIT_W4_SEND_RESET: 2500 btstack_run_loop_remove_timer(&hci_stack->timeout); 2501 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2502 return; 2503 2504 #ifndef HAVE_HOST_CONTROLLER_API 2505 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2506 // for STLC2500D, baud rate change already happened. 2507 // for others, baud rate gets changed now 2508 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2509 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2510 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2511 hci_stack->hci_transport->set_baudrate(baud_rate); 2512 } 2513 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2514 return; 2515 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2516 btstack_run_loop_remove_timer(&hci_stack->timeout); 2517 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2518 return; 2519 case HCI_INIT_W4_CUSTOM_INIT: 2520 // repeat custom init 2521 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2522 return; 2523 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2524 // repeat custom init 2525 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2526 return; 2527 #endif 2528 2529 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2530 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2531 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2532 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2533 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2534 return; 2535 } 2536 if (need_addr_change){ 2537 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2538 return; 2539 } 2540 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2541 return; 2542 #ifndef HAVE_HOST_CONTROLLER_API 2543 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2544 if (need_baud_change){ 2545 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2546 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2547 hci_stack->hci_transport->set_baudrate(baud_rate); 2548 } 2549 if (need_addr_change){ 2550 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2551 return; 2552 } 2553 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2554 return; 2555 case HCI_INIT_W4_SET_BD_ADDR: 2556 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2557 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2558 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2559 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2560 return; 2561 } 2562 // skipping st warm boot 2563 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2564 return; 2565 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2566 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2567 return; 2568 #endif 2569 2570 case HCI_INIT_DONE: 2571 // set state if we came here by fall through 2572 hci_stack->substate = HCI_INIT_DONE; 2573 return; 2574 2575 default: 2576 break; 2577 } 2578 hci_initializing_next_state(); 2579 } 2580 2581 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2582 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2583 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2584 // check if we have been aware of the HCI connection 2585 switch (conn->state){ 2586 case SENT_CREATE_CONNECTION: 2587 case RECEIVED_CONNECTION_REQUEST: 2588 case ACCEPTED_CONNECTION_REQUEST: 2589 break; 2590 default: 2591 return; 2592 } 2593 2594 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2595 bd_addr_t bd_address; 2596 (void)memcpy(&bd_address, conn->address, 6); 2597 2598 #ifdef ENABLE_CLASSIC 2599 // cache needed data 2600 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2601 #endif 2602 2603 // connection failed, remove entry 2604 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2605 btstack_memory_hci_connection_free( conn ); 2606 2607 #ifdef ENABLE_CLASSIC 2608 // notify client if dedicated bonding 2609 if (notify_dedicated_bonding_failed){ 2610 log_info("hci notify_dedicated_bonding_failed"); 2611 hci_emit_dedicated_bonding_result(bd_address, status); 2612 } 2613 2614 // if authentication error, also delete link key 2615 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2616 gap_drop_link_key_for_bd_addr(bd_address); 2617 } 2618 #else 2619 UNUSED(status); 2620 #endif 2621 } 2622 2623 #ifdef ENABLE_CLASSIC 2624 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2625 // SSP Controller 2626 if (features[6] & (1 << 3)){ 2627 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2628 } 2629 // eSCO 2630 if (features[3] & (1<<7)){ 2631 conn->remote_supported_features[0] |= 1; 2632 } 2633 // Extended features 2634 if (features[7] & (1<<7)){ 2635 conn->remote_supported_features[0] |= 2; 2636 } 2637 // SCO packet types 2638 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2639 } 2640 2641 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2642 // SSP Host 2643 if (features[0] & (1 << 0)){ 2644 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2645 } 2646 // SC Host 2647 if (features[0] & (1 << 3)){ 2648 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2649 } 2650 } 2651 2652 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2653 // SC Controller 2654 if (features[1] & (1 << 0)){ 2655 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2656 } 2657 } 2658 2659 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2660 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2661 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2662 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2663 if (conn->bonding_flags & BONDING_DEDICATED){ 2664 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2665 } 2666 } 2667 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2668 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2669 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2670 } 2671 2672 #endif 2673 2674 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2675 // handle BT initialization 2676 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2677 hci_initializing_event_handler(packet, size); 2678 } 2679 2680 // help with BT sleep 2681 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2682 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2683 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2684 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2685 hci_initializing_next_state(); 2686 } 2687 } 2688 2689 #ifdef ENABLE_CLASSIC 2690 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2691 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2692 conn->requested_security_level = LEVEL_0; 2693 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2694 hci_emit_security_level(conn->con_handle, security_level); 2695 2696 // dedicated bonding 2697 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2698 conn->bonding_flags &= ~BONDING_DEDICATED; 2699 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2700 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2701 // emit dedicated bonding complete, don't disconnect 2702 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2703 #else 2704 // request disconnect, event is emitted after disconnect 2705 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2706 #endif 2707 } 2708 } 2709 2710 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2711 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2712 conn->encryption_key_size = encryption_key_size; 2713 2714 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2715 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2716 hci_handle_mutual_authentication_completed(conn); 2717 } else { 2718 // otherwise trigger remote feature request and send authentication request 2719 hci_trigger_remote_features_for_connection(conn); 2720 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2721 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2722 } 2723 } 2724 } 2725 #endif 2726 2727 static void hci_store_local_supported_commands(const uint8_t * packet){ 2728 // create mapping table 2729 #define X(name, offset, bit) { offset, bit }, 2730 static struct { 2731 uint8_t byte_offset; 2732 uint8_t bit_position; 2733 } supported_hci_commands_map [] = { 2734 SUPPORTED_HCI_COMMANDS 2735 }; 2736 #undef X 2737 2738 // create names for debug purposes 2739 #ifdef ENABLE_LOG_DEBUG 2740 #define X(name, offset, bit) #name, 2741 static const char * command_names[] = { 2742 SUPPORTED_HCI_COMMANDS 2743 }; 2744 #undef X 2745 #endif 2746 2747 hci_stack->local_supported_commands = 0; 2748 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2749 uint16_t i; 2750 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2751 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2752 #ifdef ENABLE_LOG_DEBUG 2753 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); 2754 #else 2755 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2756 #endif 2757 hci_stack->local_supported_commands |= (1LU << i); 2758 } 2759 } 2760 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2761 } 2762 2763 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2764 UNUSED(size); 2765 2766 uint8_t status = 0; 2767 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2768 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2769 } 2770 uint16_t manufacturer; 2771 #ifdef ENABLE_CLASSIC 2772 hci_connection_t * conn; 2773 #endif 2774 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2775 hci_con_handle_t handle; 2776 #endif 2777 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2778 le_audio_cig_t * cig; 2779 #endif 2780 2781 // get num cmd packets - limit to 1 to reduce complexity 2782 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2783 2784 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2785 switch (opcode){ 2786 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2787 if (status) break; 2788 // terminate, name 248 chars 2789 packet[6+248] = 0; 2790 log_info("local name: %s", &packet[6]); 2791 break; 2792 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2793 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2794 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2795 uint16_t acl_len = little_endian_read_16(packet, 6); 2796 uint16_t sco_len = packet[8]; 2797 2798 // determine usable ACL/SCO payload size 2799 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2800 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2801 2802 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2803 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2804 2805 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2806 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2807 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2808 } 2809 break; 2810 case HCI_OPCODE_HCI_READ_RSSI: 2811 if (status == ERROR_CODE_SUCCESS){ 2812 uint8_t event[5]; 2813 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2814 event[1] = 3; 2815 (void)memcpy(&event[2], &packet[6], 3); 2816 hci_emit_event(event, sizeof(event), 1); 2817 } 2818 break; 2819 #ifdef ENABLE_BLE 2820 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2821 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2822 hci_stack->le_iso_packets_total_num = packet[11]; 2823 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2824 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2825 2826 /* fall through */ 2827 2828 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2829 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2830 hci_stack->le_acl_packets_total_num = packet[8]; 2831 // determine usable ACL payload size 2832 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2833 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2834 } 2835 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); 2836 break; 2837 #endif 2838 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2839 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2840 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2841 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2842 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); 2843 break; 2844 #endif 2845 #ifdef ENABLE_LE_CENTRAL 2846 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2847 hci_stack->le_whitelist_capacity = packet[6]; 2848 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2849 break; 2850 #endif 2851 #ifdef ENABLE_LE_PERIPHERAL 2852 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2853 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2854 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2855 break; 2856 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2857 if (hci_stack->le_advertising_set_in_current_command != 0) { 2858 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2859 hci_stack->le_advertising_set_in_current_command = 0; 2860 if (advertising_set == NULL) break; 2861 uint8_t adv_status = packet[6]; 2862 uint8_t tx_power = packet[7]; 2863 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 }; 2864 if (adv_status == 0){ 2865 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2866 } 2867 hci_emit_event(event, sizeof(event), 1); 2868 } 2869 break; 2870 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2871 if (hci_stack->le_advertising_set_in_current_command != 0) { 2872 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2873 hci_stack->le_advertising_set_in_current_command = 0; 2874 if (advertising_set == NULL) break; 2875 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2876 if (status == 0){ 2877 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2878 } 2879 hci_emit_event(event, sizeof(event), 1); 2880 } 2881 break; 2882 #endif 2883 #endif 2884 case HCI_OPCODE_HCI_READ_BD_ADDR: 2885 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2886 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2887 #ifdef ENABLE_CLASSIC 2888 if (hci_stack->link_key_db){ 2889 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2890 } 2891 #endif 2892 break; 2893 #ifdef ENABLE_CLASSIC 2894 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2895 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2896 break; 2897 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2898 if (status == ERROR_CODE_SUCCESS) { 2899 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2900 } else { 2901 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2902 } 2903 break; 2904 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2905 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2906 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2907 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2908 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2909 hci_emit_event(event, sizeof(event), 1); 2910 } 2911 break; 2912 #endif 2913 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2914 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2915 2916 #ifdef ENABLE_CLASSIC 2917 // determine usable ACL packet types based on host buffer size and supported features 2918 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]); 2919 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2920 // determine usable SCO packet types based on supported features 2921 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2922 &hci_stack->local_supported_features[0]); 2923 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2924 #endif 2925 // Classic/LE 2926 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2927 break; 2928 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2929 manufacturer = little_endian_read_16(packet, 10); 2930 // map Cypress & Infineon to Broadcom 2931 switch (manufacturer){ 2932 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2933 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2934 log_info("Treat Cypress/Infineon as Broadcom"); 2935 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2936 little_endian_store_16(packet, 10, manufacturer); 2937 break; 2938 default: 2939 break; 2940 } 2941 hci_stack->manufacturer = manufacturer; 2942 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2943 break; 2944 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2945 hci_store_local_supported_commands(packet); 2946 break; 2947 #ifdef ENABLE_CLASSIC 2948 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2949 if (status) return; 2950 hci_stack->synchronous_flow_control_enabled = 1; 2951 break; 2952 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2953 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2954 conn = hci_connection_for_handle(handle); 2955 if (conn != NULL) { 2956 uint8_t key_size = 0; 2957 if (status == 0){ 2958 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2959 log_info("Handle %04x key Size: %u", handle, key_size); 2960 } else { 2961 key_size = 1; 2962 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2963 } 2964 hci_handle_read_encryption_key_size_complete(conn, key_size); 2965 } 2966 break; 2967 // assert pairing complete event is emitted. 2968 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2969 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2970 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2971 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2972 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2973 // lookup connection by gap pairing addr 2974 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2975 if (conn == NULL) break; 2976 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2977 break; 2978 2979 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2980 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2981 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2982 uint8_t event[67]; 2983 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2984 event[1] = 65; 2985 (void)memset(&event[2], 0, 65); 2986 if (status == ERROR_CODE_SUCCESS){ 2987 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2988 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2989 event[2] = 3; 2990 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2991 } else { 2992 event[2] = 1; 2993 } 2994 } 2995 hci_emit_event(event, sizeof(event), 0); 2996 break; 2997 } 2998 2999 // note: only needed if user does not provide OOB data 3000 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3001 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3002 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3003 if (conn == NULL) break; 3004 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3005 break; 3006 #endif 3007 #endif 3008 #ifdef ENABLE_BLE 3009 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3010 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3011 // lookup CIG 3012 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3013 if (cig != NULL){ 3014 uint8_t i = 0; 3015 if (status == ERROR_CODE_SUCCESS){ 3016 // assign CIS handles to pre-allocated CIS 3017 btstack_linked_list_iterator_t it; 3018 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3019 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3020 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3021 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3022 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3023 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3024 iso_stream->cis_handle = cis_handle; 3025 cig->cis_con_handles[i] = cis_handle; 3026 i++; 3027 } 3028 } 3029 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3030 hci_emit_cig_created(cig, status); 3031 } else { 3032 hci_emit_cig_created(cig, status); 3033 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3034 } 3035 } 3036 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3037 break; 3038 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3039 if (status != ERROR_CODE_SUCCESS){ 3040 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3041 } 3042 break; 3043 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3044 if (status != ERROR_CODE_SUCCESS){ 3045 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3046 } 3047 break; 3048 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3049 // lookup BIG by state 3050 btstack_linked_list_iterator_t it; 3051 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3052 while (btstack_linked_list_iterator_has_next(&it)) { 3053 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3054 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3055 if (status == ERROR_CODE_SUCCESS){ 3056 big->state_vars.next_bis++; 3057 if (big->state_vars.next_bis == big->num_bis){ 3058 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3059 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3060 } else { 3061 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3062 } 3063 } else { 3064 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3065 big->state_vars.status = status; 3066 } 3067 return; 3068 } 3069 } 3070 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3071 while (btstack_linked_list_iterator_has_next(&it)) { 3072 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3073 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3074 if (status == ERROR_CODE_SUCCESS){ 3075 big_sync->state_vars.next_bis++; 3076 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3077 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3078 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3079 } else { 3080 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3081 } 3082 } else { 3083 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3084 big_sync->state_vars.status = status; 3085 } 3086 return; 3087 } 3088 } 3089 // Lookup CIS via active group operation 3090 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3091 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3092 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3093 3094 // lookup CIS by state 3095 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3096 while (btstack_linked_list_iterator_has_next(&it)){ 3097 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3098 handle = iso_stream->cis_handle; 3099 bool emit_cis_created = false; 3100 switch (iso_stream->state){ 3101 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3102 if (status != ERROR_CODE_SUCCESS){ 3103 emit_cis_created = true; 3104 break; 3105 } 3106 if (iso_stream->max_sdu_c_to_p > 0){ 3107 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3108 } else { 3109 emit_cis_created = true; 3110 } 3111 break; 3112 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3113 emit_cis_created = true; 3114 break; 3115 default: 3116 break; 3117 } 3118 if (emit_cis_created){ 3119 hci_cis_handle_created(iso_stream, status); 3120 } 3121 } 3122 } else { 3123 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3124 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3125 if (cig != NULL) { 3126 // emit cis created if all ISO Paths have been created 3127 // assume we are central 3128 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3129 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3130 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3131 // if outgoing has been setup, or incoming was setup but outgoing not required 3132 if ((cis_direction == 1) || (outgoing_needed == false)){ 3133 // lookup iso stream by cig/cis 3134 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3135 while (btstack_linked_list_iterator_has_next(&it)) { 3136 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3137 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3138 hci_cis_handle_created(iso_stream, status); 3139 } 3140 } 3141 } 3142 // next state 3143 cig->state_vars.next_cis++; 3144 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3145 } 3146 } 3147 } 3148 break; 3149 } 3150 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3151 // lookup BIG by state 3152 btstack_linked_list_iterator_t it; 3153 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3154 while (btstack_linked_list_iterator_has_next(&it)) { 3155 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3156 uint8_t big_handle = big_sync->big_handle; 3157 switch (big_sync->state){ 3158 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3159 btstack_linked_list_iterator_remove(&it); 3160 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3161 return; 3162 default: 3163 btstack_linked_list_iterator_remove(&it); 3164 hci_emit_big_sync_stopped(big_handle); 3165 return; 3166 } 3167 } 3168 break; 3169 } 3170 #endif 3171 #endif 3172 default: 3173 break; 3174 } 3175 } 3176 3177 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3178 UNUSED(size); 3179 3180 // get num cmd packets - limit to 1 to reduce complexity 3181 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3182 3183 // get opcode and command status 3184 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3185 3186 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3187 uint8_t status = hci_event_command_status_get_status(packet); 3188 #endif 3189 3190 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3191 bd_addr_type_t addr_type; 3192 bd_addr_t addr; 3193 #endif 3194 3195 switch (opcode){ 3196 #ifdef ENABLE_CLASSIC 3197 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3198 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3199 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3200 #endif 3201 #ifdef ENABLE_LE_CENTRAL 3202 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3203 #endif 3204 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3205 addr_type = hci_stack->outgoing_addr_type; 3206 memcpy(addr, hci_stack->outgoing_addr, 6); 3207 3208 // reset outgoing address info 3209 memset(hci_stack->outgoing_addr, 0, 6); 3210 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3211 3212 // on error 3213 if (status != ERROR_CODE_SUCCESS){ 3214 #ifdef ENABLE_LE_CENTRAL 3215 if (hci_is_le_connection_type(addr_type)){ 3216 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3217 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3218 } 3219 #endif 3220 // error => outgoing connection failed 3221 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3222 if (conn != NULL){ 3223 hci_handle_connection_failed(conn, status); 3224 } 3225 } 3226 break; 3227 #endif 3228 #ifdef ENABLE_CLASSIC 3229 case HCI_OPCODE_HCI_INQUIRY: 3230 if (status == ERROR_CODE_SUCCESS) { 3231 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3232 } else { 3233 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3234 } 3235 break; 3236 #endif 3237 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3238 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3239 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3240 if (status == ERROR_CODE_SUCCESS){ 3241 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3242 } else { 3243 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3244 } 3245 break; 3246 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3247 default: 3248 break; 3249 } 3250 } 3251 3252 #ifdef ENABLE_BLE 3253 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * generic_event) { 3254 generic_event[0] = HCI_EVENT_META_GAP; 3255 generic_event[1] = sizeof(generic_event) - 2; 3256 generic_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3257 switch (hci_event[2]){ 3258 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3259 memcpy(&generic_event[3], &hci_event[3], 11); 3260 memset(&generic_event[14], 0, 12); 3261 memcpy(&generic_event[26], &hci_event[14], 7); 3262 memset(&generic_event[33], 0xff, 3); 3263 break; 3264 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3265 memcpy(&generic_event[3], &hci_event[3], 30); 3266 memset(&generic_event[33], 0xff, 3); 3267 break; 3268 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3269 memcpy(&generic_event[3], &hci_event[3], 33); 3270 break; 3271 default: 3272 btstack_unreachable(); 3273 break; 3274 } 3275 } 3276 3277 static void event_handle_le_connection_complete(const uint8_t * hci_event){ 3278 bd_addr_t addr; 3279 bd_addr_type_t addr_type; 3280 hci_connection_t * conn; 3281 3282 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3283 uint8_t gap_event[36]; 3284 hci_create_gap_connection_complete_event(hci_event, gap_event); 3285 3286 // read fields 3287 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3288 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3289 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3290 3291 // Connection management 3292 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3293 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3294 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3295 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3296 3297 #ifdef ENABLE_LE_CENTRAL 3298 // handle error: error is reported only to the initiator -> outgoing connection 3299 if (status){ 3300 3301 // handle cancelled outgoing connection 3302 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3303 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3304 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3305 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3306 // reset state 3307 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3308 // get outgoing connection conn struct for direct connect 3309 conn = gap_get_outgoing_connection(); 3310 } 3311 3312 // outgoing le connection establishment is done 3313 if (conn){ 3314 // remove entry 3315 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3316 btstack_memory_hci_connection_free( conn ); 3317 } 3318 return; 3319 } 3320 #endif 3321 3322 // on success, both hosts receive connection complete event 3323 if (role == HCI_ROLE_MASTER){ 3324 #ifdef ENABLE_LE_CENTRAL 3325 // if we're master on an le connection, it was an outgoing connection and we're done with it 3326 // note: no hci_connection_t object exists yet for connect with whitelist 3327 if (hci_is_le_connection_type(addr_type)){ 3328 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3329 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3330 } 3331 #endif 3332 } else { 3333 #ifdef ENABLE_LE_PERIPHERAL 3334 // if we're slave, it was an incoming connection, advertisements have stopped 3335 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3336 #endif 3337 } 3338 3339 // LE connections are auto-accepted, so just create a connection if there isn't one already 3340 if (!conn){ 3341 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3342 } 3343 3344 // no memory, sorry. 3345 if (!conn){ 3346 return; 3347 } 3348 3349 conn->state = OPEN; 3350 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3351 conn->le_connection_interval = conn_interval; 3352 3353 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3354 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3355 3356 #ifdef ENABLE_LE_PERIPHERAL 3357 if (role == HCI_ROLE_SLAVE){ 3358 hci_update_advertisements_enabled_for_current_roles(); 3359 } 3360 #endif 3361 3362 // init unenhanced att bearer mtu 3363 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3364 conn->att_connection.mtu_exchanged = false; 3365 3366 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3367 3368 // restart timer 3369 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3370 // btstack_run_loop_add_timer(&conn->timeout); 3371 3372 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3373 3374 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3375 hci_emit_event(gap_event, sizeof(gap_event), 1); 3376 3377 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3378 hci_emit_nr_connections_changed(); 3379 } 3380 #endif 3381 3382 #ifdef ENABLE_CLASSIC 3383 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){ 3384 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3385 // LEVEL_4 is tested by l2cap 3386 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3387 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3388 if (level >= LEVEL_3){ 3389 // MITM not possible without keyboard or display 3390 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3391 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3392 3393 // MITM possible if one side has keyboard and the other has keyboard or display 3394 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3395 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3396 3397 // MITM not possible if one side has only display and other side has no keyboard 3398 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3399 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3400 } 3401 // LEVEL 2 requires SSP, which is a given 3402 return true; 3403 } 3404 3405 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3406 // get requested security level 3407 gap_security_level_t requested_security_level = conn->requested_security_level; 3408 if (hci_stack->gap_secure_connections_only_mode){ 3409 requested_security_level = LEVEL_4; 3410 } 3411 3412 // assess security: LEVEL 4 requires SC 3413 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3414 if ((requested_security_level == LEVEL_4) && 3415 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3416 !hci_remote_sc_enabled(conn)){ 3417 log_info("Level 4 required, but SC not supported -> abort"); 3418 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3419 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3420 return; 3421 } 3422 3423 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3424 // - GAP/MOD/NBON/BV-02-C 3425 // - GAP/DM/NBON/BV-01-C 3426 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3427 switch (conn->io_cap_response_auth_req){ 3428 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3429 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3430 if (hci_stack->bondable == false){ 3431 log_info("Dedicated vs. non-bondable -> abort"); 3432 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3433 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3434 return; 3435 } 3436 default: 3437 break; 3438 } 3439 } 3440 3441 // assess security based on io capabilities 3442 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3443 // responder: fully validate io caps of both sides as well as OOB data 3444 bool security_possible = false; 3445 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3446 3447 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3448 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3449 // so we merge the OOB data availability 3450 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3451 if (conn->classic_oob_c_192 != NULL){ 3452 have_oob_data |= 1; 3453 } 3454 if (conn->classic_oob_c_256 != NULL){ 3455 have_oob_data |= 2; 3456 } 3457 // for up to Level 3, either P-192 as well as P-256 will do 3458 // 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 3459 // if remote does not SC, we should not receive P-256 data either 3460 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3461 security_possible = true; 3462 } 3463 // for Level 4, P-256 is needed 3464 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3465 security_possible = true; 3466 } 3467 #endif 3468 3469 if (security_possible == false){ 3470 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3471 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3472 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3473 return; 3474 } 3475 } else { 3476 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3477 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3478 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3479 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3480 log_info("Level 3+ required, but no input/output -> abort"); 3481 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3482 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3483 return; 3484 } 3485 #endif 3486 #endif 3487 } 3488 3489 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3490 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3491 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3492 } else { 3493 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3494 } 3495 #endif 3496 } 3497 3498 #endif 3499 3500 static void event_handler(uint8_t *packet, uint16_t size){ 3501 3502 uint16_t event_length = packet[1]; 3503 3504 // assert packet is complete 3505 if (size != (event_length + 2u)){ 3506 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3507 return; 3508 } 3509 3510 hci_con_handle_t handle; 3511 hci_connection_t * conn; 3512 int i; 3513 3514 #ifdef ENABLE_CLASSIC 3515 hci_link_type_t link_type; 3516 bd_addr_t addr; 3517 bd_addr_type_t addr_type; 3518 #endif 3519 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3520 hci_iso_stream_t * iso_stream; 3521 le_audio_big_t * big; 3522 le_audio_big_sync_t * big_sync; 3523 #endif 3524 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3525 btstack_linked_list_iterator_t it; 3526 #endif 3527 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3528 uint8_t advertising_handle; 3529 #endif 3530 3531 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3532 3533 switch (hci_event_packet_get_type(packet)) { 3534 3535 case HCI_EVENT_COMMAND_COMPLETE: 3536 handle_command_complete_event(packet, size); 3537 break; 3538 3539 case HCI_EVENT_COMMAND_STATUS: 3540 handle_command_status_event(packet, size); 3541 break; 3542 3543 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3544 if (size < 3) return; 3545 uint16_t num_handles = packet[2]; 3546 if (size != (3u + num_handles * 4u)) return; 3547 #ifdef ENABLE_CLASSIC 3548 bool notify_sco = false; 3549 #endif 3550 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3551 bool notify_iso = false; 3552 #endif 3553 uint16_t offset = 3; 3554 for (i=0; i<num_handles;i++){ 3555 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3556 offset += 2u; 3557 uint16_t num_packets = little_endian_read_16(packet, offset); 3558 offset += 2u; 3559 3560 conn = hci_connection_for_handle(handle); 3561 if (conn != NULL) { 3562 3563 if (conn->num_packets_sent >= num_packets) { 3564 conn->num_packets_sent -= num_packets; 3565 } else { 3566 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3567 conn->num_packets_sent = 0; 3568 } 3569 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3570 #ifdef ENABLE_CLASSIC 3571 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3572 notify_sco = true; 3573 } 3574 #endif 3575 } 3576 3577 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3578 hci_controller_dump_packets(); 3579 #endif 3580 3581 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3582 if (conn == NULL){ 3583 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3584 if (iso_stream != NULL){ 3585 if (iso_stream->num_packets_sent >= num_packets) { 3586 iso_stream->num_packets_sent -= num_packets; 3587 } else { 3588 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3589 iso_stream->num_packets_sent = 0; 3590 } 3591 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3592 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3593 if (big != NULL){ 3594 big->num_completed_timestamp_current_valid = true; 3595 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3596 } 3597 } 3598 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3599 num_packets, handle, iso_stream->num_packets_sent); 3600 notify_iso = true; 3601 } 3602 } 3603 #endif 3604 } 3605 3606 #ifdef ENABLE_CLASSIC 3607 if (notify_sco){ 3608 hci_notify_if_sco_can_send_now(); 3609 } 3610 #endif 3611 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3612 if (notify_iso){ 3613 hci_iso_notify_can_send_now(); 3614 } 3615 #endif 3616 break; 3617 } 3618 3619 #ifdef ENABLE_CLASSIC 3620 case HCI_EVENT_FLUSH_OCCURRED: 3621 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3622 handle = hci_event_flush_occurred_get_handle(packet); 3623 conn = hci_connection_for_handle(handle); 3624 if (conn) { 3625 log_info("Flush occurred, disconnect 0x%04x", handle); 3626 conn->state = SEND_DISCONNECT; 3627 } 3628 break; 3629 3630 case HCI_EVENT_INQUIRY_COMPLETE: 3631 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3632 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3633 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3634 hci_emit_event(event, sizeof(event), 1); 3635 } 3636 break; 3637 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3638 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3639 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3640 } 3641 break; 3642 case HCI_EVENT_CONNECTION_REQUEST: 3643 reverse_bd_addr(&packet[2], addr); 3644 link_type = (hci_link_type_t) packet[11]; 3645 3646 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3647 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3648 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3649 bd_addr_copy(hci_stack->decline_addr, addr); 3650 break; 3651 } 3652 3653 if (hci_stack->gap_classic_accept_callback != NULL){ 3654 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3655 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3656 bd_addr_copy(hci_stack->decline_addr, addr); 3657 break; 3658 } 3659 } 3660 3661 // TODO: eval COD 8-10 3662 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3663 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3664 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3665 if (!conn) { 3666 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3667 } 3668 if (!conn) { 3669 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3670 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3671 bd_addr_copy(hci_stack->decline_addr, addr); 3672 hci_run(); 3673 // avoid event to higher layer 3674 return; 3675 } 3676 conn->state = RECEIVED_CONNECTION_REQUEST; 3677 // store info about eSCO 3678 if (link_type == HCI_LINK_TYPE_ESCO){ 3679 conn->remote_supported_features[0] |= 1; 3680 } 3681 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3682 if (addr_type == BD_ADDR_TYPE_SCO){ 3683 hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3684 btstack_assert(acl_conn != NULL); 3685 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3686 } 3687 hci_run(); 3688 break; 3689 3690 case HCI_EVENT_CONNECTION_COMPLETE: 3691 // Connection management 3692 reverse_bd_addr(&packet[5], addr); 3693 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3694 addr_type = BD_ADDR_TYPE_ACL; 3695 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3696 if (conn) { 3697 switch (conn->state){ 3698 // expected states 3699 case ACCEPTED_CONNECTION_REQUEST: 3700 case SENT_CREATE_CONNECTION: 3701 break; 3702 // unexpected state -> ignore 3703 default: 3704 // don't forward event to app 3705 return; 3706 } 3707 if (!packet[2]){ 3708 conn->state = OPEN; 3709 conn->con_handle = little_endian_read_16(packet, 3); 3710 3711 // trigger write supervision timeout if we're master 3712 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3713 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3714 } 3715 3716 // trigger write automatic flush timeout 3717 if (hci_stack->automatic_flush_timeout != 0){ 3718 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3719 } 3720 3721 // restart timer 3722 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3723 btstack_run_loop_add_timer(&conn->timeout); 3724 3725 // trigger remote features for dedicated bonding 3726 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3727 hci_trigger_remote_features_for_connection(conn); 3728 } 3729 3730 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3731 3732 hci_emit_nr_connections_changed(); 3733 } else { 3734 // connection failed 3735 hci_handle_connection_failed(conn, packet[2]); 3736 } 3737 } 3738 break; 3739 3740 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3741 reverse_bd_addr(&packet[5], addr); 3742 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3743 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3744 btstack_assert(conn != NULL); 3745 3746 if (packet[2] != ERROR_CODE_SUCCESS){ 3747 // connection failed, remove entry 3748 hci_handle_connection_failed(conn, packet[2]); 3749 break; 3750 } 3751 3752 conn->state = OPEN; 3753 conn->con_handle = little_endian_read_16(packet, 3); 3754 3755 // update sco payload length for eSCO connections 3756 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3757 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3758 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3759 } 3760 3761 #ifdef ENABLE_SCO_OVER_HCI 3762 // update SCO 3763 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3764 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3765 } 3766 // trigger can send now 3767 if (hci_have_usb_transport()){ 3768 hci_stack->sco_can_send_now = true; 3769 } 3770 3771 // setup implict sco flow control 3772 conn->sco_tx_ready = 0; 3773 conn->sco_tx_active = 0; 3774 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3775 3776 #endif 3777 #ifdef HAVE_SCO_TRANSPORT 3778 // configure sco transport 3779 if (hci_stack->sco_transport != NULL){ 3780 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3781 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3782 } 3783 #endif 3784 break; 3785 3786 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3787 handle = little_endian_read_16(packet, 3); 3788 conn = hci_connection_for_handle(handle); 3789 if (!conn) break; 3790 if (!packet[2]){ 3791 const uint8_t * features = &packet[5]; 3792 hci_handle_remote_features_page_0(conn, features); 3793 3794 // read extended features if possible 3795 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3796 && ((conn->remote_supported_features[0] & 2) != 0)) { 3797 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3798 break; 3799 } 3800 } 3801 hci_handle_remote_features_received(conn); 3802 break; 3803 3804 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3805 handle = little_endian_read_16(packet, 3); 3806 conn = hci_connection_for_handle(handle); 3807 if (!conn) break; 3808 // status = ok, page = 1 3809 if (!packet[2]) { 3810 uint8_t page_number = packet[5]; 3811 uint8_t maximum_page_number = packet[6]; 3812 const uint8_t * features = &packet[7]; 3813 bool done = false; 3814 switch (page_number){ 3815 case 1: 3816 hci_handle_remote_features_page_1(conn, features); 3817 if (maximum_page_number >= 2){ 3818 // get Secure Connections (Controller) from Page 2 if available 3819 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3820 } else { 3821 // otherwise, assume SC (Controller) == SC (Host) 3822 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3823 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3824 } 3825 done = true; 3826 } 3827 break; 3828 case 2: 3829 hci_handle_remote_features_page_2(conn, features); 3830 done = true; 3831 break; 3832 default: 3833 break; 3834 } 3835 if (!done) break; 3836 } 3837 hci_handle_remote_features_received(conn); 3838 break; 3839 3840 case HCI_EVENT_LINK_KEY_REQUEST: 3841 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3842 hci_event_link_key_request_get_bd_addr(packet, addr); 3843 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3844 if (!conn) break; 3845 3846 // lookup link key in db if not cached 3847 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3848 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3849 } 3850 3851 // response sent by hci_run() 3852 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3853 #endif 3854 break; 3855 3856 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3857 hci_event_link_key_request_get_bd_addr(packet, addr); 3858 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3859 if (!conn) break; 3860 3861 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3862 3863 // CVE-2020-26555: ignore NULL link key 3864 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3865 if (btstack_is_null(&packet[8], 16)) break; 3866 3867 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3868 // Change Connection Encryption keeps link key type 3869 if (link_key_type != CHANGED_COMBINATION_KEY){ 3870 conn->link_key_type = link_key_type; 3871 } 3872 3873 // cache link key. link keys stored in little-endian format for legacy reasons 3874 memcpy(&conn->link_key, &packet[8], 16); 3875 3876 // only store link key: 3877 // - if bondable enabled 3878 if (hci_stack->bondable == false) break; 3879 // - if security level sufficient 3880 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3881 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3882 break; 3883 } 3884 3885 case HCI_EVENT_PIN_CODE_REQUEST: 3886 hci_event_pin_code_request_get_bd_addr(packet, addr); 3887 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3888 if (!conn) break; 3889 3890 hci_pairing_started(conn, false); 3891 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3892 if (!hci_stack->bondable ){ 3893 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3894 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3895 hci_run(); 3896 return; 3897 } 3898 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3899 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3900 log_info("Level 4 required, but SC not supported -> abort"); 3901 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3902 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3903 hci_run(); 3904 return; 3905 } 3906 break; 3907 3908 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3909 hci_event_io_capability_response_get_bd_addr(packet, addr); 3910 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3911 if (!conn) break; 3912 3913 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3914 hci_pairing_started(conn, true); 3915 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3916 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3917 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3918 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3919 #endif 3920 break; 3921 3922 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3923 hci_event_io_capability_response_get_bd_addr(packet, addr); 3924 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3925 if (!conn) break; 3926 3927 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3928 hci_connection_timestamp(conn); 3929 hci_pairing_started(conn, true); 3930 break; 3931 3932 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3933 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3934 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3935 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3936 if (!conn) break; 3937 3938 hci_connection_timestamp(conn); 3939 3940 hci_pairing_started(conn, true); 3941 3942 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3943 break; 3944 #endif 3945 3946 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3947 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3948 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3949 if (!conn) break; 3950 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3951 if (hci_stack->ssp_auto_accept){ 3952 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3953 }; 3954 } else { 3955 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3956 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3957 // don't forward event to app 3958 hci_run(); 3959 return; 3960 } 3961 break; 3962 3963 case HCI_EVENT_USER_PASSKEY_REQUEST: 3964 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3965 if (hci_stack->ssp_auto_accept){ 3966 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3967 }; 3968 break; 3969 3970 case HCI_EVENT_MODE_CHANGE: 3971 handle = hci_event_mode_change_get_handle(packet); 3972 conn = hci_connection_for_handle(handle); 3973 if (!conn) break; 3974 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3975 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3976 break; 3977 #endif 3978 3979 case HCI_EVENT_ENCRYPTION_CHANGE: 3980 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3981 handle = hci_event_encryption_change_get_connection_handle(packet); 3982 conn = hci_connection_for_handle(handle); 3983 if (!conn) break; 3984 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3985 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3986 if (encryption_enabled){ 3987 if (hci_is_le_connection(conn)){ 3988 // For LE, we accept connection as encrypted 3989 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3990 } 3991 #ifdef ENABLE_CLASSIC 3992 else { 3993 3994 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3995 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3996 bool connected_uses_aes_ccm = encryption_enabled == 2; 3997 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3998 #ifdef ENABLE_TESTING_SUPPORT 3999 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4000 // - GAP/SEC/SEM/BI-31-C 4001 // - GAP/SEC/SEM/BI-32-C 4002 // - GAP/SEC/SEM/BI-33-C 4003 4004 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4005 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4006 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4007 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4008 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4009 } 4010 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4011 conn->link_key_type, new_link_key_type); 4012 conn->link_key_type = new_link_key_type; 4013 #else 4014 log_info("SC during pairing, but only E0 now -> abort"); 4015 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4016 break; 4017 #endif 4018 } 4019 4020 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4021 if (connected_uses_aes_ccm){ 4022 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4023 } 4024 4025 #ifdef ENABLE_TESTING_SUPPORT 4026 // work around for issue with PTS dongle 4027 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4028 #endif 4029 // validate encryption key size 4030 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4031 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4032 // already got encryption key size 4033 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4034 } else { 4035 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4036 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4037 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4038 } else { 4039 // if not, pretend everything is perfect 4040 hci_handle_read_encryption_key_size_complete(conn, 16); 4041 } 4042 } 4043 } 4044 #endif 4045 } else { 4046 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4047 } 4048 } else { 4049 #ifdef ENABLE_CLASSIC 4050 if (!hci_is_le_connection(conn)){ 4051 uint8_t status = hci_event_encryption_change_get_status(packet); 4052 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4053 conn->bonding_flags &= ~BONDING_DEDICATED; 4054 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4055 conn->bonding_status = status; 4056 } 4057 // trigger security update -> level 0 4058 hci_handle_mutual_authentication_completed(conn); 4059 } 4060 #endif 4061 } 4062 4063 break; 4064 4065 #ifdef ENABLE_CLASSIC 4066 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4067 handle = hci_event_authentication_complete_get_connection_handle(packet); 4068 conn = hci_connection_for_handle(handle); 4069 if (!conn) break; 4070 4071 // clear authentication active flag 4072 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4073 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4074 4075 // authenticated only if auth status == 0 4076 if (hci_event_authentication_complete_get_status(packet) == 0){ 4077 // authenticated 4078 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4079 4080 // If not already encrypted, start encryption 4081 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4082 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4083 break; 4084 } 4085 } 4086 4087 // emit updated security level (will be 0 if not authenticated) 4088 hci_handle_mutual_authentication_completed(conn); 4089 break; 4090 4091 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4092 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4093 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4094 if (!conn) break; 4095 4096 // treat successfully paired connection as authenticated 4097 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4098 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4099 } 4100 4101 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4102 break; 4103 #endif 4104 4105 // HCI_EVENT_DISCONNECTION_COMPLETE 4106 // has been split, to first notify stack before shutting connection down 4107 // see end of function, too. 4108 case HCI_EVENT_DISCONNECTION_COMPLETE: 4109 if (packet[2]) break; // status != 0 4110 handle = little_endian_read_16(packet, 3); 4111 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4112 if (hci_stack->acl_fragmentation_total_size > 0u) { 4113 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4114 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4115 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4116 hci_stack->acl_fragmentation_total_size = 0; 4117 hci_stack->acl_fragmentation_pos = 0; 4118 if (release_buffer){ 4119 hci_release_packet_buffer(); 4120 } 4121 } 4122 } 4123 4124 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4125 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4126 if (hci_stack->iso_fragmentation_total_size > 0u) { 4127 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4128 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4129 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4130 hci_stack->iso_fragmentation_total_size = 0; 4131 hci_stack->iso_fragmentation_pos = 0; 4132 if (release_buffer){ 4133 hci_release_packet_buffer(); 4134 } 4135 } 4136 } 4137 4138 // finalize iso stream for CIS handle 4139 iso_stream = hci_iso_stream_for_con_handle(handle); 4140 if (iso_stream != NULL){ 4141 hci_iso_stream_finalize(iso_stream); 4142 break; 4143 } 4144 4145 // finalize iso stream(s) for ACL handle 4146 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4147 while (btstack_linked_list_iterator_has_next(&it)){ 4148 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4149 if (iso_stream->acl_handle == handle ) { 4150 hci_iso_stream_finalize(iso_stream); 4151 } 4152 } 4153 #endif 4154 4155 conn = hci_connection_for_handle(handle); 4156 if (!conn) break; 4157 #ifdef ENABLE_CLASSIC 4158 // pairing failed if it was ongoing 4159 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4160 #endif 4161 4162 // emit dedicatd bonding event 4163 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4164 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4165 } 4166 4167 // mark connection for shutdown, stop timers, reset state 4168 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4169 hci_connection_stop_timer(conn); 4170 hci_connection_init(conn); 4171 4172 #ifdef ENABLE_BLE 4173 #ifdef ENABLE_LE_PERIPHERAL 4174 // re-enable advertisements for le connections if active 4175 if (hci_is_le_connection(conn)){ 4176 hci_update_advertisements_enabled_for_current_roles(); 4177 } 4178 #endif 4179 #endif 4180 break; 4181 4182 case HCI_EVENT_HARDWARE_ERROR: 4183 log_error("Hardware Error: 0x%02x", packet[2]); 4184 if (hci_stack->hardware_error_callback){ 4185 (*hci_stack->hardware_error_callback)(packet[2]); 4186 } else { 4187 // if no special requests, just reboot stack 4188 hci_power_control_off(); 4189 hci_power_control_on(); 4190 } 4191 break; 4192 4193 #ifdef ENABLE_CLASSIC 4194 case HCI_EVENT_ROLE_CHANGE: 4195 if (packet[2]) break; // status != 0 4196 reverse_bd_addr(&packet[3], addr); 4197 addr_type = BD_ADDR_TYPE_ACL; 4198 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4199 if (!conn) break; 4200 conn->role = (hci_role_t) packet[9]; 4201 break; 4202 #endif 4203 4204 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4205 // release packet buffer only for asynchronous transport and if there are not further fragments 4206 if (hci_transport_synchronous()) { 4207 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4208 return; // instead of break: to avoid re-entering hci_run() 4209 } 4210 hci_stack->acl_fragmentation_tx_active = 0; 4211 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4212 hci_stack->iso_fragmentation_tx_active = 0; 4213 if (hci_stack->iso_fragmentation_total_size) break; 4214 #endif 4215 if (hci_stack->acl_fragmentation_total_size) break; 4216 hci_release_packet_buffer(); 4217 4218 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4219 hci_iso_notify_can_send_now(); 4220 #endif 4221 // L2CAP receives this event via the hci_emit_event below 4222 4223 #ifdef ENABLE_CLASSIC 4224 // For SCO, we do the can_send_now_check here 4225 hci_notify_if_sco_can_send_now(); 4226 #endif 4227 break; 4228 4229 #ifdef ENABLE_CLASSIC 4230 case HCI_EVENT_SCO_CAN_SEND_NOW: 4231 // For SCO, we do the can_send_now_check here 4232 hci_stack->sco_can_send_now = true; 4233 hci_notify_if_sco_can_send_now(); 4234 return; 4235 4236 // explode inquriy results for easier consumption 4237 case HCI_EVENT_INQUIRY_RESULT: 4238 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4239 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4240 gap_inquiry_explode(packet, size); 4241 break; 4242 #endif 4243 4244 #ifdef ENABLE_BLE 4245 case HCI_EVENT_LE_META: 4246 switch (packet[2]){ 4247 #ifdef ENABLE_LE_CENTRAL 4248 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4249 if (!hci_stack->le_scanning_enabled) break; 4250 le_handle_advertisement_report(packet, size); 4251 break; 4252 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4253 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4254 if (!hci_stack->le_scanning_enabled) break; 4255 le_handle_extended_advertisement_report(packet, size); 4256 break; 4257 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4258 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4259 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4260 break; 4261 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4262 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4263 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4264 while (btstack_linked_list_iterator_has_next(&it)) { 4265 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4266 if (advertising_set->advertising_handle == advertising_handle){ 4267 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4268 } 4269 } 4270 break; 4271 #endif 4272 #endif 4273 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4274 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4275 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4276 event_handle_le_connection_complete(packet); 4277 break; 4278 4279 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4280 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4281 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4282 conn = hci_connection_for_handle(handle); 4283 if (!conn) break; 4284 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4285 break; 4286 4287 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4288 // connection 4289 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4290 conn = hci_connection_for_handle(handle); 4291 if (conn) { 4292 // read arguments 4293 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4294 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4295 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4296 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4297 4298 // validate against current connection parameter range 4299 le_connection_parameter_range_t existing_range; 4300 gap_get_connection_parameter_range(&existing_range); 4301 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4302 if (update_parameter){ 4303 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4304 conn->le_conn_interval_min = le_conn_interval_min; 4305 conn->le_conn_interval_max = le_conn_interval_max; 4306 conn->le_conn_latency = le_conn_latency; 4307 conn->le_supervision_timeout = le_supervision_timeout; 4308 } else { 4309 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4310 } 4311 } 4312 break; 4313 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4314 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4315 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4316 conn = hci_connection_for_handle(handle); 4317 if (conn) { 4318 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4319 } 4320 break; 4321 #endif 4322 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4323 case HCI_SUBEVENT_LE_CIS_REQUEST: 4324 // incoming CIS request, allocate iso stream object and cache metadata 4325 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4326 hci_subevent_le_cis_request_get_cig_id(packet), 4327 hci_subevent_le_cis_request_get_cis_id(packet)); 4328 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4329 if (iso_stream != NULL){ 4330 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4331 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4332 } 4333 break; 4334 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4335 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4336 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4337 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4338 iso_stream = hci_iso_stream_for_con_handle(handle); 4339 btstack_assert(iso_stream != NULL); 4340 // track connection info 4341 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4342 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4343 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4344 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4345 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4346 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4347 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4348 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4349 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4350 // CIS Accept by Peripheral 4351 if (status == ERROR_CODE_SUCCESS){ 4352 if (iso_stream->max_sdu_p_to_c > 0){ 4353 // we're peripheral and we will send data 4354 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4355 } else { 4356 // we're peripheral and we will only receive data 4357 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4358 } 4359 } else { 4360 hci_cis_handle_created(iso_stream, status); 4361 } 4362 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4363 } else { 4364 // CIG Setup by Central 4365 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4366 btstack_assert(cig != NULL); 4367 // update iso stream state 4368 if (status == ERROR_CODE_SUCCESS){ 4369 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4370 } else { 4371 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4372 } 4373 // update cig state 4374 uint8_t i; 4375 for (i=0;i<cig->num_cis;i++){ 4376 if (cig->cis_con_handles[i] == handle){ 4377 cig->cis_setup_active[i] = false; 4378 if (status == ERROR_CODE_SUCCESS){ 4379 cig->cis_established[i] = true; 4380 } else { 4381 hci_cis_handle_created(iso_stream, status); 4382 } 4383 } 4384 } 4385 4386 // trigger iso path setup if complete 4387 bool cis_setup_active = false; 4388 for (i=0;i<cig->num_cis;i++){ 4389 cis_setup_active |= cig->cis_setup_active[i]; 4390 } 4391 if (cis_setup_active == false){ 4392 cig->state_vars.next_cis = 0; 4393 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4394 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4395 } 4396 } 4397 } 4398 break; 4399 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4400 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4401 big = hci_big_for_handle(packet[4]); 4402 if (big != NULL){ 4403 uint8_t status = packet[3]; 4404 if (status == ERROR_CODE_SUCCESS){ 4405 // store bis_con_handles and trigger iso path setup 4406 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4407 uint8_t i; 4408 for (i=0;i<num_bis;i++){ 4409 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4410 big->bis_con_handles[i] = bis_handle; 4411 // assign bis handle 4412 btstack_linked_list_iterator_t it; 4413 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4414 while (btstack_linked_list_iterator_has_next(&it)){ 4415 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4416 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4417 (iso_stream->group_id == big->big_handle)){ 4418 iso_stream->cis_handle = bis_handle; 4419 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4420 break; 4421 } 4422 } 4423 } 4424 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4425 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4426 big->state_vars.next_bis = 0; 4427 } 4428 } else { 4429 // create BIG failed or has been stopped by us 4430 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4431 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4432 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4433 hci_emit_big_created(big, status); 4434 } else { 4435 hci_emit_big_terminated(big); 4436 } 4437 } 4438 } 4439 break; 4440 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4441 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4442 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4443 if (big != NULL){ 4444 // finalize associated ISO streams 4445 btstack_linked_list_iterator_t it; 4446 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4447 while (btstack_linked_list_iterator_has_next(&it)){ 4448 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4449 if (iso_stream->group_id == big->big_handle){ 4450 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4451 btstack_linked_list_iterator_remove(&it); 4452 btstack_memory_hci_iso_stream_free(iso_stream); 4453 } 4454 } 4455 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4456 switch (big->state){ 4457 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4458 hci_emit_big_created(big, big->state_vars.status); 4459 break; 4460 default: 4461 hci_emit_big_terminated(big); 4462 break; 4463 } 4464 } 4465 break; 4466 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4467 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4468 big_sync = hci_big_sync_for_handle(packet[4]); 4469 if (big_sync != NULL){ 4470 uint8_t status = packet[3]; 4471 uint8_t big_handle = packet[4]; 4472 if (status == ERROR_CODE_SUCCESS){ 4473 // store bis_con_handles and trigger iso path setup 4474 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4475 uint8_t i; 4476 for (i=0;i<num_bis;i++){ 4477 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4478 } 4479 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4480 // trigger iso path setup 4481 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4482 big_sync->state_vars.next_bis = 0; 4483 } 4484 } else { 4485 // create BIG Sync failed or has been stopped by us 4486 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4487 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4488 hci_emit_big_sync_created(big_sync, status); 4489 } else { 4490 hci_emit_big_sync_stopped(big_handle); 4491 } 4492 } 4493 } 4494 break; 4495 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4496 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4497 big_sync = hci_big_sync_for_handle(packet[4]); 4498 if (big_sync != NULL){ 4499 uint8_t big_handle = packet[4]; 4500 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4501 hci_emit_big_sync_stopped(big_handle); 4502 } 4503 break; 4504 #endif 4505 default: 4506 break; 4507 } 4508 break; 4509 #endif 4510 case HCI_EVENT_VENDOR_SPECIFIC: 4511 // Vendor specific commands often create vendor specific event instead of num completed packets 4512 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4513 switch (hci_stack->manufacturer){ 4514 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4515 hci_stack->num_cmd_packets = 1; 4516 break; 4517 default: 4518 break; 4519 } 4520 break; 4521 default: 4522 break; 4523 } 4524 4525 handle_event_for_current_stack_state(packet, size); 4526 4527 // notify upper stack 4528 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4529 4530 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4531 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4532 handle = little_endian_read_16(packet, 3); 4533 hci_connection_t * aConn = hci_connection_for_handle(handle); 4534 // discard connection if app did not trigger a reconnect in the event handler 4535 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4536 hci_shutdown_connection(aConn); 4537 } 4538 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4539 hci_controller_dump_packets(); 4540 #endif 4541 } 4542 4543 // execute main loop 4544 hci_run(); 4545 } 4546 4547 #ifdef ENABLE_CLASSIC 4548 4549 static void sco_handler(uint8_t * packet, uint16_t size){ 4550 // lookup connection struct 4551 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4552 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4553 if (!conn) return; 4554 4555 #ifdef ENABLE_SCO_OVER_HCI 4556 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4557 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4558 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4559 packet[2] = 0x3c; 4560 memmove(&packet[3], &packet[23], 63); 4561 size = 63; 4562 } 4563 } 4564 4565 if (hci_have_usb_transport()){ 4566 // Nothing to do 4567 } else { 4568 // 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); 4569 if (hci_stack->synchronous_flow_control_enabled == 0){ 4570 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4571 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4572 if (conn->sco_tx_active == 0){ 4573 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4574 conn->sco_tx_active = 1; 4575 conn->sco_tx_ready = max_sco_packets; 4576 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4577 hci_notify_if_sco_can_send_now(); 4578 } 4579 } else { 4580 if (conn->sco_tx_ready < max_sco_packets){ 4581 conn->sco_tx_ready++; 4582 } 4583 hci_notify_if_sco_can_send_now(); 4584 } 4585 } 4586 } 4587 #endif 4588 4589 // deliver to app 4590 if (hci_stack->sco_packet_handler) { 4591 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4592 } 4593 4594 #ifdef HAVE_SCO_TRANSPORT 4595 // We can send one packet for each received packet 4596 conn->sco_tx_ready++; 4597 hci_notify_if_sco_can_send_now(); 4598 #endif 4599 4600 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4601 conn->num_packets_completed++; 4602 hci_stack->host_completed_packets = 1; 4603 hci_run(); 4604 #endif 4605 } 4606 #endif 4607 4608 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4609 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4610 // propagate ISO packets received as ACL 4611 hci_iso_stream_t * iso_stream; 4612 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4613 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4614 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4615 if (iso_stream != NULL){ 4616 packet_type = HCI_ISO_DATA_PACKET; 4617 } 4618 } 4619 #endif 4620 4621 hci_dump_packet(packet_type, 1, packet, size); 4622 switch (packet_type) { 4623 case HCI_EVENT_PACKET: 4624 event_handler(packet, size); 4625 break; 4626 case HCI_ACL_DATA_PACKET: 4627 acl_handler(packet, size); 4628 break; 4629 #ifdef ENABLE_CLASSIC 4630 case HCI_SCO_DATA_PACKET: 4631 sco_handler(packet, size); 4632 break; 4633 #endif 4634 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4635 case HCI_ISO_DATA_PACKET: 4636 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4637 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4638 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4639 } 4640 hci_iso_packet_handler(iso_stream, packet, size); 4641 break; 4642 #endif 4643 default: 4644 break; 4645 } 4646 } 4647 4648 /** 4649 * @brief Add event packet handler. 4650 */ 4651 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4652 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4653 } 4654 4655 /** 4656 * @brief Remove event packet handler. 4657 */ 4658 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4659 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4660 } 4661 4662 /** Register HCI packet handlers */ 4663 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4664 hci_stack->acl_packet_handler = handler; 4665 } 4666 4667 #ifdef ENABLE_CLASSIC 4668 /** 4669 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4670 */ 4671 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4672 hci_stack->sco_packet_handler = handler; 4673 } 4674 #endif 4675 4676 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4677 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4678 hci_stack->iso_packet_handler = handler; 4679 } 4680 #endif 4681 4682 static void hci_state_reset(void){ 4683 // no connections yet 4684 hci_stack->connections = NULL; 4685 4686 // keep discoverable/connectable as this has been requested by the client(s) 4687 // hci_stack->discoverable = 0; 4688 // hci_stack->connectable = 0; 4689 // hci_stack->bondable = 1; 4690 // hci_stack->own_addr_type = 0; 4691 4692 // buffer is free 4693 hci_stack->hci_packet_buffer_reserved = false; 4694 4695 // no pending cmds 4696 hci_stack->decline_reason = 0; 4697 4698 hci_stack->secure_connections_active = false; 4699 4700 #ifdef ENABLE_CLASSIC 4701 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4702 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4703 4704 hci_stack->gap_tasks_classic = 4705 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4706 GAP_TASK_SET_CLASS_OF_DEVICE | 4707 GAP_TASK_SET_LOCAL_NAME | 4708 GAP_TASK_SET_EIR_DATA | 4709 GAP_TASK_WRITE_SCAN_ENABLE | 4710 GAP_TASK_WRITE_PAGE_TIMEOUT; 4711 #endif 4712 4713 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4714 hci_stack->classic_read_local_oob_data = false; 4715 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4716 #endif 4717 4718 // LE 4719 #ifdef ENABLE_BLE 4720 memset(hci_stack->le_random_address, 0, 6); 4721 hci_stack->le_random_address_set = 0; 4722 #endif 4723 #ifdef ENABLE_LE_CENTRAL 4724 hci_stack->le_scanning_active = false; 4725 hci_stack->le_scanning_param_update = true; 4726 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4727 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4728 hci_stack->le_whitelist_capacity = 0; 4729 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4730 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4731 #endif 4732 #endif 4733 #ifdef ENABLE_LE_PERIPHERAL 4734 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4735 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4736 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4737 } 4738 if (hci_stack->le_advertisements_data != NULL){ 4739 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4740 } 4741 #endif 4742 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4743 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4744 #endif 4745 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4746 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4747 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4748 #endif 4749 } 4750 4751 #ifdef ENABLE_CLASSIC 4752 /** 4753 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4754 */ 4755 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4756 // store and open remote device db 4757 hci_stack->link_key_db = link_key_db; 4758 if (hci_stack->link_key_db) { 4759 hci_stack->link_key_db->open(); 4760 } 4761 } 4762 #endif 4763 4764 void hci_init(const hci_transport_t *transport, const void *config){ 4765 4766 #ifdef HAVE_MALLOC 4767 if (!hci_stack) { 4768 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4769 } 4770 #else 4771 hci_stack = &hci_stack_static; 4772 #endif 4773 memset(hci_stack, 0, sizeof(hci_stack_t)); 4774 4775 // reference to use transport layer implementation 4776 hci_stack->hci_transport = transport; 4777 4778 // reference to used config 4779 hci_stack->config = config; 4780 4781 // setup pointer for outgoing packet buffer 4782 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4783 4784 // max acl payload size defined in config.h 4785 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4786 4787 // register packet handlers with transport 4788 transport->register_packet_handler(&packet_handler); 4789 4790 hci_stack->state = HCI_STATE_OFF; 4791 4792 // class of device 4793 hci_stack->class_of_device = 0x007a020c; // Smartphone 4794 4795 // bondable by default 4796 hci_stack->bondable = 1; 4797 4798 #ifdef ENABLE_CLASSIC 4799 // classic name 4800 hci_stack->local_name = default_classic_name; 4801 4802 // Master slave policy 4803 hci_stack->master_slave_policy = 1; 4804 4805 // Allow Role Switch 4806 hci_stack->allow_role_switch = 1; 4807 4808 // Default / minimum security level = 2 4809 hci_stack->gap_security_level = LEVEL_2; 4810 4811 // Default Security Mode 4 4812 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4813 4814 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4815 hci_stack->gap_required_encyrption_key_size = 7; 4816 4817 // Link Supervision Timeout 4818 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4819 4820 // All ACL packet types are enabledh 4821 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4822 #endif 4823 4824 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4825 hci_stack->ssp_enable = 1; 4826 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4827 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4828 hci_stack->ssp_auto_accept = 1; 4829 4830 // Secure Connections: enable (requires support from Controller) 4831 hci_stack->secure_connections_enable = true; 4832 4833 // voice setting - signed 16 bit pcm data with CVSD over the air 4834 hci_stack->sco_voice_setting = 0x60; 4835 4836 #ifdef ENABLE_BLE 4837 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4838 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4839 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4840 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4841 hci_stack->le_connection_latency = 4; // 4 4842 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4843 hci_stack->le_minimum_ce_length = 0; // 0 ms 4844 hci_stack->le_maximum_ce_length = 0; // 0 ms 4845 #endif 4846 4847 #ifdef ENABLE_LE_CENTRAL 4848 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4849 4850 // default LE Scanning 4851 hci_stack->le_scan_type = 0x01; // active 4852 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4853 hci_stack->le_scan_window = 0x30; // 30 ms 4854 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4855 #endif 4856 4857 #ifdef ENABLE_LE_PERIPHERAL 4858 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4859 4860 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4861 hci_stack->le_advertisements_interval_min = 0x0800; 4862 hci_stack->le_advertisements_interval_max = 0x0800; 4863 hci_stack->le_advertisements_type = 0; 4864 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4865 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4866 hci_stack->le_advertisements_channel_map = 0x07; 4867 hci_stack->le_advertisements_filter_policy = 0; 4868 #endif 4869 4870 // connection parameter range used to answer connection parameter update requests in l2cap 4871 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4872 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4873 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4874 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4875 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4876 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4877 4878 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4879 hci_stack->iso_packets_to_queue = 1; 4880 #endif 4881 4882 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4883 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4884 #endif 4885 4886 hci_state_reset(); 4887 } 4888 4889 void hci_deinit(void){ 4890 btstack_run_loop_remove_timer(&hci_stack->timeout); 4891 #ifdef HAVE_MALLOC 4892 if (hci_stack) { 4893 free(hci_stack); 4894 } 4895 #endif 4896 hci_stack = NULL; 4897 4898 #ifdef ENABLE_CLASSIC 4899 disable_l2cap_timeouts = 0; 4900 #endif 4901 } 4902 4903 /** 4904 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4905 */ 4906 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4907 hci_stack->chipset = chipset_driver; 4908 4909 // reset chipset driver - init is also called on power_up 4910 if (hci_stack->chipset && hci_stack->chipset->init){ 4911 hci_stack->chipset->init(hci_stack->config); 4912 } 4913 } 4914 4915 void hci_enable_custom_pre_init(void){ 4916 hci_stack->chipset_pre_init = true; 4917 } 4918 4919 /** 4920 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4921 */ 4922 void hci_set_control(const btstack_control_t *hardware_control){ 4923 // references to used control implementation 4924 hci_stack->control = hardware_control; 4925 // init with transport config 4926 hardware_control->init(hci_stack->config); 4927 } 4928 4929 static void hci_discard_connections(void){ 4930 btstack_linked_list_iterator_t it; 4931 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4932 while (btstack_linked_list_iterator_has_next(&it)){ 4933 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4934 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4935 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4936 hci_shutdown_connection(connection); 4937 } 4938 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4939 while (hci_stack->iso_streams != NULL){ 4940 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4941 } 4942 #endif 4943 } 4944 4945 void hci_close(void){ 4946 4947 #ifdef ENABLE_CLASSIC 4948 // close remote device db 4949 if (hci_stack->link_key_db) { 4950 hci_stack->link_key_db->close(); 4951 } 4952 #endif 4953 4954 hci_discard_connections(); 4955 4956 hci_power_control(HCI_POWER_OFF); 4957 4958 #ifdef HAVE_MALLOC 4959 free(hci_stack); 4960 #endif 4961 hci_stack = NULL; 4962 } 4963 4964 #ifdef HAVE_SCO_TRANSPORT 4965 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4966 hci_stack->sco_transport = sco_transport; 4967 sco_transport->register_packet_handler(&packet_handler); 4968 } 4969 #endif 4970 4971 #ifdef ENABLE_CLASSIC 4972 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4973 // validate ranage and set 4974 if (encryption_key_size < 7) return; 4975 if (encryption_key_size > 16) return; 4976 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4977 } 4978 4979 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4980 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4981 hci_stack->gap_security_mode = security_mode; 4982 return ERROR_CODE_SUCCESS; 4983 } else { 4984 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4985 } 4986 } 4987 4988 gap_security_mode_t gap_get_security_mode(void){ 4989 return hci_stack->gap_security_mode; 4990 } 4991 4992 void gap_set_security_level(gap_security_level_t security_level){ 4993 hci_stack->gap_security_level = security_level; 4994 } 4995 4996 gap_security_level_t gap_get_security_level(void){ 4997 if (hci_stack->gap_secure_connections_only_mode){ 4998 return LEVEL_4; 4999 } 5000 return hci_stack->gap_security_level; 5001 } 5002 5003 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5004 hci_stack->gap_minimal_service_security_level = security_level; 5005 } 5006 5007 void gap_set_secure_connections_only_mode(bool enable){ 5008 hci_stack->gap_secure_connections_only_mode = enable; 5009 } 5010 5011 bool gap_get_secure_connections_only_mode(void){ 5012 return hci_stack->gap_secure_connections_only_mode; 5013 } 5014 #endif 5015 5016 #ifdef ENABLE_CLASSIC 5017 void gap_set_class_of_device(uint32_t class_of_device){ 5018 hci_stack->class_of_device = class_of_device; 5019 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5020 hci_run(); 5021 } 5022 5023 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5024 hci_stack->default_link_policy_settings = default_link_policy_settings; 5025 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5026 hci_run(); 5027 } 5028 5029 void gap_set_allow_role_switch(bool allow_role_switch){ 5030 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5031 } 5032 5033 uint8_t hci_get_allow_role_switch(void){ 5034 return hci_stack->allow_role_switch; 5035 } 5036 5037 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5038 hci_stack->link_supervision_timeout = link_supervision_timeout; 5039 } 5040 5041 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5042 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5043 } 5044 5045 uint16_t hci_automatic_flush_timeout(void){ 5046 return hci_stack->automatic_flush_timeout; 5047 } 5048 5049 void hci_disable_l2cap_timeout_check(void){ 5050 disable_l2cap_timeouts = 1; 5051 } 5052 #endif 5053 5054 #ifndef HAVE_HOST_CONTROLLER_API 5055 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5056 void hci_set_bd_addr(bd_addr_t addr){ 5057 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5058 hci_stack->custom_bd_addr_set = 1; 5059 } 5060 #endif 5061 5062 // State-Module-Driver overview 5063 // state module low-level 5064 // HCI_STATE_OFF off close 5065 // HCI_STATE_INITIALIZING, on open 5066 // HCI_STATE_WORKING, on open 5067 // HCI_STATE_HALTING, on open 5068 // HCI_STATE_SLEEPING, off/sleep close 5069 // HCI_STATE_FALLING_ASLEEP on open 5070 5071 static int hci_power_control_on(void){ 5072 5073 // power on 5074 int err = 0; 5075 if (hci_stack->control && hci_stack->control->on){ 5076 err = (*hci_stack->control->on)(); 5077 } 5078 if (err){ 5079 log_error( "POWER_ON failed"); 5080 hci_emit_hci_open_failed(); 5081 return err; 5082 } 5083 5084 // int chipset driver 5085 if (hci_stack->chipset && hci_stack->chipset->init){ 5086 hci_stack->chipset->init(hci_stack->config); 5087 } 5088 5089 // init transport 5090 if (hci_stack->hci_transport->init){ 5091 hci_stack->hci_transport->init(hci_stack->config); 5092 } 5093 5094 // open transport 5095 err = hci_stack->hci_transport->open(); 5096 if (err){ 5097 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5098 if (hci_stack->control && hci_stack->control->off){ 5099 (*hci_stack->control->off)(); 5100 } 5101 hci_emit_hci_open_failed(); 5102 return err; 5103 } 5104 return 0; 5105 } 5106 5107 static void hci_power_control_off(void){ 5108 5109 log_info("hci_power_control_off"); 5110 5111 // close low-level device 5112 hci_stack->hci_transport->close(); 5113 5114 log_info("hci_power_control_off - hci_transport closed"); 5115 5116 // power off 5117 if (hci_stack->control && hci_stack->control->off){ 5118 (*hci_stack->control->off)(); 5119 } 5120 5121 log_info("hci_power_control_off - control closed"); 5122 5123 hci_stack->state = HCI_STATE_OFF; 5124 } 5125 5126 static void hci_power_control_sleep(void){ 5127 5128 log_info("hci_power_control_sleep"); 5129 5130 #if 0 5131 // don't close serial port during sleep 5132 5133 // close low-level device 5134 hci_stack->hci_transport->close(hci_stack->config); 5135 #endif 5136 5137 // sleep mode 5138 if (hci_stack->control && hci_stack->control->sleep){ 5139 (*hci_stack->control->sleep)(); 5140 } 5141 5142 hci_stack->state = HCI_STATE_SLEEPING; 5143 } 5144 5145 static int hci_power_control_wake(void){ 5146 5147 log_info("hci_power_control_wake"); 5148 5149 // wake on 5150 if (hci_stack->control && hci_stack->control->wake){ 5151 (*hci_stack->control->wake)(); 5152 } 5153 5154 #if 0 5155 // open low-level device 5156 int err = hci_stack->hci_transport->open(hci_stack->config); 5157 if (err){ 5158 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5159 if (hci_stack->control && hci_stack->control->off){ 5160 (*hci_stack->control->off)(); 5161 } 5162 hci_emit_hci_open_failed(); 5163 return err; 5164 } 5165 #endif 5166 5167 return 0; 5168 } 5169 5170 static void hci_power_enter_initializing_state(void){ 5171 // set up state machine 5172 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5173 hci_stack->hci_packet_buffer_reserved = false; 5174 hci_stack->state = HCI_STATE_INITIALIZING; 5175 5176 #ifndef HAVE_HOST_CONTROLLER_API 5177 if (hci_stack->chipset_pre_init) { 5178 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5179 } else 5180 #endif 5181 { 5182 hci_stack->substate = HCI_INIT_SEND_RESET; 5183 } 5184 } 5185 5186 static void hci_power_enter_halting_state(void){ 5187 #ifdef ENABLE_BLE 5188 // drop entries scheduled for removal, mark others for re-adding 5189 btstack_linked_list_iterator_t it; 5190 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5191 while (btstack_linked_list_iterator_has_next(&it)){ 5192 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5193 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5194 btstack_linked_list_iterator_remove(&it); 5195 btstack_memory_whitelist_entry_free(entry); 5196 } else { 5197 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5198 } 5199 } 5200 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5201 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5202 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5203 while (btstack_linked_list_iterator_has_next(&it)){ 5204 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5205 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5206 btstack_linked_list_iterator_remove(&it); 5207 btstack_memory_periodic_advertiser_list_entry_free(entry); 5208 } else { 5209 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5210 continue; 5211 } 5212 } 5213 #endif 5214 #endif 5215 // see hci_run 5216 hci_stack->state = HCI_STATE_HALTING; 5217 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5218 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5219 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5220 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5221 btstack_run_loop_add_timer(&hci_stack->timeout); 5222 } 5223 5224 // returns error 5225 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5226 int err; 5227 switch (power_mode){ 5228 case HCI_POWER_ON: 5229 err = hci_power_control_on(); 5230 if (err != 0) { 5231 log_error("hci_power_control_on() error %d", err); 5232 return err; 5233 } 5234 hci_power_enter_initializing_state(); 5235 break; 5236 case HCI_POWER_OFF: 5237 // do nothing 5238 break; 5239 case HCI_POWER_SLEEP: 5240 // do nothing (with SLEEP == OFF) 5241 break; 5242 default: 5243 btstack_assert(false); 5244 break; 5245 } 5246 return ERROR_CODE_SUCCESS; 5247 } 5248 5249 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5250 switch (power_mode){ 5251 case HCI_POWER_ON: 5252 // do nothing 5253 break; 5254 case HCI_POWER_OFF: 5255 // no connections yet, just turn it off 5256 hci_power_control_off(); 5257 break; 5258 case HCI_POWER_SLEEP: 5259 // no connections yet, just turn it off 5260 hci_power_control_sleep(); 5261 break; 5262 default: 5263 btstack_assert(false); 5264 break; 5265 } 5266 return ERROR_CODE_SUCCESS; 5267 } 5268 5269 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5270 switch (power_mode){ 5271 case HCI_POWER_ON: 5272 // do nothing 5273 break; 5274 case HCI_POWER_OFF: 5275 hci_power_enter_halting_state(); 5276 break; 5277 case HCI_POWER_SLEEP: 5278 // see hci_run 5279 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5280 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5281 break; 5282 default: 5283 btstack_assert(false); 5284 break; 5285 } 5286 return ERROR_CODE_SUCCESS; 5287 } 5288 5289 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5290 switch (power_mode){ 5291 case HCI_POWER_ON: 5292 hci_power_enter_initializing_state(); 5293 break; 5294 case HCI_POWER_OFF: 5295 // do nothing 5296 break; 5297 case HCI_POWER_SLEEP: 5298 // see hci_run 5299 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5300 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5301 break; 5302 default: 5303 btstack_assert(false); 5304 break; 5305 } 5306 return ERROR_CODE_SUCCESS; 5307 } 5308 5309 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5310 switch (power_mode){ 5311 case HCI_POWER_ON: 5312 hci_power_enter_initializing_state(); 5313 break; 5314 case HCI_POWER_OFF: 5315 hci_power_enter_halting_state(); 5316 break; 5317 case HCI_POWER_SLEEP: 5318 // do nothing 5319 break; 5320 default: 5321 btstack_assert(false); 5322 break; 5323 } 5324 return ERROR_CODE_SUCCESS; 5325 } 5326 5327 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5328 int err; 5329 switch (power_mode){ 5330 case HCI_POWER_ON: 5331 err = hci_power_control_wake(); 5332 if (err) return err; 5333 hci_power_enter_initializing_state(); 5334 break; 5335 case HCI_POWER_OFF: 5336 hci_power_enter_halting_state(); 5337 break; 5338 case HCI_POWER_SLEEP: 5339 // do nothing 5340 break; 5341 default: 5342 btstack_assert(false); 5343 break; 5344 } 5345 return ERROR_CODE_SUCCESS; 5346 } 5347 5348 int hci_power_control(HCI_POWER_MODE power_mode){ 5349 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5350 btstack_run_loop_remove_timer(&hci_stack->timeout); 5351 int err = 0; 5352 switch (hci_stack->state){ 5353 case HCI_STATE_OFF: 5354 err = hci_power_control_state_off(power_mode); 5355 break; 5356 case HCI_STATE_INITIALIZING: 5357 err = hci_power_control_state_initializing(power_mode); 5358 break; 5359 case HCI_STATE_WORKING: 5360 err = hci_power_control_state_working(power_mode); 5361 break; 5362 case HCI_STATE_HALTING: 5363 err = hci_power_control_state_halting(power_mode); 5364 break; 5365 case HCI_STATE_FALLING_ASLEEP: 5366 err = hci_power_control_state_falling_asleep(power_mode); 5367 break; 5368 case HCI_STATE_SLEEPING: 5369 err = hci_power_control_state_sleeping(power_mode); 5370 break; 5371 default: 5372 btstack_assert(false); 5373 break; 5374 } 5375 if (err != 0){ 5376 return err; 5377 } 5378 5379 // create internal event 5380 hci_emit_state(); 5381 5382 // trigger next/first action 5383 hci_run(); 5384 5385 return 0; 5386 } 5387 5388 5389 static void hci_halting_run(void) { 5390 5391 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5392 5393 hci_connection_t *connection; 5394 #ifdef ENABLE_BLE 5395 #ifdef ENABLE_LE_PERIPHERAL 5396 bool stop_advertismenets; 5397 #endif 5398 #endif 5399 5400 switch (hci_stack->substate) { 5401 case HCI_HALTING_CLASSIC_STOP: 5402 #ifdef ENABLE_CLASSIC 5403 if (!hci_can_send_command_packet_now()) return; 5404 5405 if (hci_stack->connectable || hci_stack->discoverable){ 5406 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5407 hci_send_cmd(&hci_write_scan_enable, 0); 5408 return; 5409 } 5410 #endif 5411 /* fall through */ 5412 5413 case HCI_HALTING_LE_ADV_STOP: 5414 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5415 5416 #ifdef ENABLE_BLE 5417 #ifdef ENABLE_LE_PERIPHERAL 5418 if (!hci_can_send_command_packet_now()) return; 5419 5420 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5421 5422 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5423 if (hci_extended_advertising_supported()){ 5424 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5425 btstack_linked_list_iterator_t it; 5426 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5427 // stop all periodic advertisements and check if an extended set is active 5428 while (btstack_linked_list_iterator_has_next(&it)){ 5429 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5430 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5431 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5432 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5433 return; 5434 } 5435 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5436 stop_advertismenets = true; 5437 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5438 } 5439 } 5440 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5441 if (stop_advertismenets){ 5442 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5443 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5444 return; 5445 } 5446 } else 5447 #else /* ENABLE_LE_PERIPHERAL */ 5448 { 5449 if (stop_advertismenets) { 5450 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5451 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5452 return; 5453 } 5454 } 5455 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5456 #endif /* ENABLE_LE_PERIPHERAL */ 5457 #endif /* ENABLE_BLE */ 5458 5459 /* fall through */ 5460 5461 case HCI_HALTING_LE_SCAN_STOP: 5462 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5463 if (!hci_can_send_command_packet_now()) return; 5464 5465 #ifdef ENABLE_BLE 5466 #ifdef ENABLE_LE_CENTRAL 5467 if (hci_stack->le_scanning_active){ 5468 hci_le_scan_stop(); 5469 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5470 return; 5471 } 5472 #endif 5473 #endif 5474 5475 /* fall through */ 5476 5477 case HCI_HALTING_DISCONNECT_ALL: 5478 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5479 if (!hci_can_send_command_packet_now()) return; 5480 5481 // close all open connections 5482 connection = (hci_connection_t *) hci_stack->connections; 5483 if (connection) { 5484 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5485 5486 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5487 5488 // check state 5489 switch(connection->state) { 5490 case SENT_DISCONNECT: 5491 case RECEIVED_DISCONNECTION_COMPLETE: 5492 // wait until connection is gone 5493 return; 5494 default: 5495 break; 5496 } 5497 5498 // finally, send the disconnect command 5499 connection->state = SENT_DISCONNECT; 5500 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5501 return; 5502 } 5503 5504 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5505 // stop BIGs and BIG Syncs 5506 if (hci_stack->le_audio_bigs != NULL){ 5507 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5508 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5509 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5510 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5511 return; 5512 } 5513 if (hci_stack->le_audio_big_syncs != NULL){ 5514 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5515 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5516 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5517 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5518 return; 5519 } 5520 #endif 5521 5522 btstack_run_loop_remove_timer(&hci_stack->timeout); 5523 5524 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5525 log_info("HCI_STATE_HALTING: wait 50 ms"); 5526 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5527 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5528 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5529 btstack_run_loop_add_timer(&hci_stack->timeout); 5530 break; 5531 5532 case HCI_HALTING_W4_CLOSE_TIMER: 5533 // keep waiting 5534 break; 5535 5536 case HCI_HALTING_CLOSE: 5537 // close left over connections (that had not been properly closed before) 5538 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5539 hci_discard_connections(); 5540 5541 log_info("HCI_STATE_HALTING, calling off"); 5542 5543 // switch mode 5544 hci_power_control_off(); 5545 5546 log_info("HCI_STATE_HALTING, emitting state"); 5547 hci_emit_state(); 5548 log_info("HCI_STATE_HALTING, done"); 5549 break; 5550 5551 default: 5552 break; 5553 } 5554 }; 5555 5556 static void hci_falling_asleep_run(void){ 5557 hci_connection_t * connection; 5558 switch(hci_stack->substate) { 5559 case HCI_FALLING_ASLEEP_DISCONNECT: 5560 log_info("HCI_STATE_FALLING_ASLEEP"); 5561 // close all open connections 5562 connection = (hci_connection_t *) hci_stack->connections; 5563 if (connection){ 5564 5565 // send disconnect 5566 if (!hci_can_send_command_packet_now()) return; 5567 5568 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5569 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5570 5571 // send disconnected event right away - causes higher layer connections to get closed, too. 5572 hci_shutdown_connection(connection); 5573 return; 5574 } 5575 5576 if (hci_classic_supported()){ 5577 // disable page and inquiry scan 5578 if (!hci_can_send_command_packet_now()) return; 5579 5580 log_info("HCI_STATE_HALTING, disabling inq scans"); 5581 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5582 5583 // continue in next sub state 5584 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5585 break; 5586 } 5587 5588 /* fall through */ 5589 5590 case HCI_FALLING_ASLEEP_COMPLETE: 5591 log_info("HCI_STATE_HALTING, calling sleep"); 5592 // switch mode 5593 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5594 hci_emit_state(); 5595 break; 5596 5597 default: 5598 break; 5599 } 5600 } 5601 5602 #ifdef ENABLE_CLASSIC 5603 5604 static void hci_update_scan_enable(void){ 5605 // 2 = page scan, 1 = inq scan 5606 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5607 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5608 hci_run(); 5609 } 5610 5611 void gap_discoverable_control(uint8_t enable){ 5612 if (enable) enable = 1; // normalize argument 5613 5614 if (hci_stack->discoverable == enable){ 5615 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5616 return; 5617 } 5618 5619 hci_stack->discoverable = enable; 5620 hci_update_scan_enable(); 5621 } 5622 5623 void gap_connectable_control(uint8_t enable){ 5624 if (enable) enable = 1; // normalize argument 5625 5626 // don't emit event 5627 if (hci_stack->connectable == enable) return; 5628 5629 hci_stack->connectable = enable; 5630 hci_update_scan_enable(); 5631 } 5632 #endif 5633 5634 void gap_local_bd_addr(bd_addr_t address_buffer){ 5635 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5636 } 5637 5638 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5639 static void hci_host_num_completed_packets(void){ 5640 5641 // create packet manually as arrays are not supported and num_commands should not get reduced 5642 hci_reserve_packet_buffer(); 5643 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5644 5645 uint16_t size = 0; 5646 uint16_t num_handles = 0; 5647 packet[size++] = 0x35; 5648 packet[size++] = 0x0c; 5649 size++; // skip param len 5650 size++; // skip num handles 5651 5652 // add { handle, packets } entries 5653 btstack_linked_item_t * it; 5654 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5655 hci_connection_t * connection = (hci_connection_t *) it; 5656 if (connection->num_packets_completed){ 5657 little_endian_store_16(packet, size, connection->con_handle); 5658 size += 2; 5659 little_endian_store_16(packet, size, connection->num_packets_completed); 5660 size += 2; 5661 // 5662 num_handles++; 5663 connection->num_packets_completed = 0; 5664 } 5665 } 5666 5667 packet[2] = size - 3; 5668 packet[3] = num_handles; 5669 5670 hci_stack->host_completed_packets = 0; 5671 5672 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5673 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5674 5675 // release packet buffer for synchronous transport implementations 5676 if (hci_transport_synchronous()){ 5677 hci_release_packet_buffer(); 5678 hci_emit_transport_packet_sent(); 5679 } 5680 } 5681 #endif 5682 5683 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5684 UNUSED(ds); 5685 hci_stack->substate = HCI_HALTING_CLOSE; 5686 hci_halting_run(); 5687 } 5688 5689 static bool hci_run_acl_fragments(void){ 5690 if (hci_stack->acl_fragmentation_total_size > 0u) { 5691 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5692 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5693 if (connection) { 5694 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5695 hci_send_acl_packet_fragments(connection); 5696 return true; 5697 } 5698 } else { 5699 // connection gone -> discard further fragments 5700 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5701 hci_stack->acl_fragmentation_total_size = 0; 5702 hci_stack->acl_fragmentation_pos = 0; 5703 } 5704 } 5705 return false; 5706 } 5707 5708 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5709 static bool hci_run_iso_fragments(void){ 5710 if (hci_stack->iso_fragmentation_total_size > 0u) { 5711 // TODO: flow control 5712 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5713 hci_send_iso_packet_fragments(); 5714 return true; 5715 } 5716 } 5717 return false; 5718 } 5719 #endif 5720 5721 #ifdef ENABLE_CLASSIC 5722 5723 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5724 static bool hci_classic_operation_active(void) { 5725 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5726 return true; 5727 } 5728 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5729 return true; 5730 } 5731 btstack_linked_item_t * it; 5732 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5733 hci_connection_t *connection = (hci_connection_t *) it; 5734 switch (connection->state) { 5735 case SENT_CREATE_CONNECTION: 5736 case SENT_CANCEL_CONNECTION: 5737 case SENT_DISCONNECT: 5738 return true; 5739 default: 5740 break; 5741 } 5742 } 5743 return false; 5744 } 5745 #endif 5746 5747 static bool hci_run_general_gap_classic(void){ 5748 5749 // assert stack is working and classic is active 5750 if (hci_classic_supported() == false) return false; 5751 if (hci_stack->state != HCI_STATE_WORKING) return false; 5752 5753 // decline incoming connections 5754 if (hci_stack->decline_reason){ 5755 uint8_t reason = hci_stack->decline_reason; 5756 hci_stack->decline_reason = 0; 5757 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5758 return true; 5759 } 5760 5761 if (hci_stack->gap_tasks_classic != 0){ 5762 hci_run_gap_tasks_classic(); 5763 return true; 5764 } 5765 5766 // start/stop inquiry 5767 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5768 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5769 if (hci_classic_operation_active() == false) 5770 #endif 5771 { 5772 uint8_t duration = hci_stack->inquiry_state; 5773 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5774 if (hci_stack->inquiry_max_period_length != 0){ 5775 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); 5776 } else { 5777 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5778 } 5779 return true; 5780 } 5781 } 5782 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5783 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5784 hci_send_cmd(&hci_inquiry_cancel); 5785 return true; 5786 } 5787 5788 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5789 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5790 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5791 return true; 5792 } 5793 5794 // remote name request 5795 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5796 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5797 if (hci_classic_operation_active() == false) 5798 #endif 5799 { 5800 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5801 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5802 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5803 return true; 5804 } 5805 } 5806 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5807 // Local OOB data 5808 if (hci_stack->classic_read_local_oob_data){ 5809 hci_stack->classic_read_local_oob_data = false; 5810 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5811 hci_send_cmd(&hci_read_local_extended_oob_data); 5812 } else { 5813 hci_send_cmd(&hci_read_local_oob_data); 5814 } 5815 } 5816 #endif 5817 // pairing 5818 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5819 uint8_t state = hci_stack->gap_pairing_state; 5820 uint8_t pin_code[PIN_CODE_LEN]; 5821 switch (state){ 5822 case GAP_PAIRING_STATE_SEND_PIN: 5823 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5824 memset(pin_code, 0, 16); 5825 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5826 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5827 break; 5828 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5829 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5830 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5831 break; 5832 case GAP_PAIRING_STATE_SEND_PASSKEY: 5833 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5834 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5835 break; 5836 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5837 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5838 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5839 break; 5840 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5841 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5842 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5843 break; 5844 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5845 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5846 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5847 break; 5848 default: 5849 break; 5850 } 5851 return true; 5852 } 5853 return false; 5854 } 5855 #endif 5856 5857 #ifdef ENABLE_BLE 5858 5859 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5860 static uint8_t hci_le_num_phys(uint8_t phys){ 5861 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5862 btstack_assert(phys); 5863 return num_bits_set[phys]; 5864 } 5865 #endif 5866 5867 #ifdef ENABLE_LE_CENTRAL 5868 static void hci_le_scan_stop(void){ 5869 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5870 if (hci_extended_advertising_supported()) { 5871 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5872 } else 5873 #endif 5874 { 5875 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5876 } 5877 } 5878 5879 static void 5880 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5881 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5882 if (hci_extended_advertising_supported()) { 5883 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5884 uint16_t le_connection_scan_interval[3]; 5885 uint16_t le_connection_scan_window[3]; 5886 uint16_t le_connection_interval_min[3]; 5887 uint16_t le_connection_interval_max[3]; 5888 uint16_t le_connection_latency[3]; 5889 uint16_t le_supervision_timeout[3]; 5890 uint16_t le_minimum_ce_length[3]; 5891 uint16_t le_maximum_ce_length[3]; 5892 5893 uint8_t i; 5894 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5895 for (i=0;i<num_phys;i++){ 5896 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5897 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5898 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5899 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5900 le_connection_latency[i] = hci_stack->le_connection_latency; 5901 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5902 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5903 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5904 } 5905 hci_send_cmd(&hci_le_extended_create_connection, 5906 initiator_filter_policy, 5907 hci_stack->le_connection_own_addr_type, // our addr type: 5908 address_type, // peer address type 5909 address, // peer bd addr 5910 hci_stack->le_connection_phys, // initiating PHY 5911 le_connection_scan_interval, // conn scan interval 5912 le_connection_scan_window, // conn scan windows 5913 le_connection_interval_min, // conn interval min 5914 le_connection_interval_max, // conn interval max 5915 le_connection_latency, // conn latency 5916 le_supervision_timeout, // conn latency 5917 le_minimum_ce_length, // min ce length 5918 le_maximum_ce_length // max ce length 5919 ); 5920 } else 5921 #endif 5922 { 5923 hci_send_cmd(&hci_le_create_connection, 5924 hci_stack->le_connection_scan_interval, // conn scan interval 5925 hci_stack->le_connection_scan_window, // conn scan windows 5926 initiator_filter_policy, // don't use whitelist 5927 address_type, // peer address type 5928 address, // peer bd addr 5929 hci_stack->le_connection_own_addr_type, // our addr type: 5930 hci_stack->le_connection_interval_min, // conn interval min 5931 hci_stack->le_connection_interval_max, // conn interval max 5932 hci_stack->le_connection_latency, // conn latency 5933 hci_stack->le_supervision_timeout, // conn latency 5934 hci_stack->le_minimum_ce_length, // min ce length 5935 hci_stack->le_maximum_ce_length // max ce length 5936 ); 5937 } 5938 } 5939 #endif 5940 5941 #ifdef ENABLE_LE_PERIPHERAL 5942 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5943 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5944 uint8_t operation = 0; 5945 if (pos == 0){ 5946 // first fragment or complete data 5947 operation |= 1; 5948 } 5949 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5950 // last fragment or complete data 5951 operation |= 2; 5952 } 5953 return operation; 5954 } 5955 #endif 5956 #endif 5957 5958 static bool hci_run_general_gap_le(void){ 5959 5960 btstack_linked_list_iterator_t lit; 5961 5962 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5963 if (hci_stack->le_resolvable_private_address_update_s > 0){ 5964 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 5965 hci_stack->le_resolvable_private_address_update_s = 0; 5966 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 5967 return true; 5968 } 5969 #endif 5970 5971 // Phase 1: collect what to stop 5972 5973 #ifdef ENABLE_LE_CENTRAL 5974 bool scanning_stop = false; 5975 bool connecting_stop = false; 5976 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5977 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5978 bool periodic_sync_stop = false; 5979 #endif 5980 #endif 5981 #endif 5982 5983 #ifdef ENABLE_LE_PERIPHERAL 5984 bool advertising_stop = false; 5985 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5986 le_advertising_set_t * advertising_stop_set = NULL; 5987 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5988 bool periodic_advertising_stop = false; 5989 #endif 5990 #endif 5991 #endif 5992 5993 // check if own address changes 5994 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5995 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5996 5997 // check if whitelist needs modification 5998 bool whitelist_modification_pending = false; 5999 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6000 while (btstack_linked_list_iterator_has_next(&lit)){ 6001 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6002 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6003 whitelist_modification_pending = true; 6004 break; 6005 } 6006 } 6007 6008 // check if resolving list needs modification 6009 bool resolving_list_modification_pending = false; 6010 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6011 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6012 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6013 resolving_list_modification_pending = true; 6014 } 6015 #endif 6016 6017 #ifdef ENABLE_LE_CENTRAL 6018 6019 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6020 // check if periodic advertiser list needs modification 6021 bool periodic_list_modification_pending = false; 6022 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6023 while (btstack_linked_list_iterator_has_next(&lit)){ 6024 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6025 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6026 periodic_list_modification_pending = true; 6027 break; 6028 } 6029 } 6030 #endif 6031 6032 // scanning control 6033 if (hci_stack->le_scanning_active) { 6034 // stop if: 6035 // - parameter change required 6036 // - it's disabled 6037 // - whitelist change required but used for scanning 6038 // - resolving list modified 6039 // - own address changes 6040 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6041 if ((hci_stack->le_scanning_param_update) || 6042 !hci_stack->le_scanning_enabled || 6043 (scanning_uses_whitelist && whitelist_modification_pending) || 6044 resolving_list_modification_pending || 6045 random_address_change){ 6046 6047 scanning_stop = true; 6048 } 6049 } 6050 6051 // connecting control 6052 bool connecting_with_whitelist; 6053 switch (hci_stack->le_connecting_state){ 6054 case LE_CONNECTING_DIRECT: 6055 case LE_CONNECTING_WHITELIST: 6056 // stop connecting if: 6057 // - connecting uses white and whitelist modification pending 6058 // - if it got disabled 6059 // - resolving list modified 6060 // - own address changes 6061 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6062 if ((connecting_with_whitelist && whitelist_modification_pending) || 6063 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6064 resolving_list_modification_pending || 6065 random_address_change) { 6066 6067 connecting_stop = true; 6068 } 6069 break; 6070 default: 6071 break; 6072 } 6073 6074 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6075 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6076 // periodic sync control 6077 bool sync_with_advertiser_list; 6078 switch(hci_stack->le_periodic_sync_state){ 6079 case LE_CONNECTING_DIRECT: 6080 case LE_CONNECTING_WHITELIST: 6081 // stop sync if: 6082 // - sync with advertiser list and advertiser list modification pending 6083 // - if it got disabled 6084 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6085 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6086 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6087 periodic_sync_stop = true; 6088 } 6089 break; 6090 default: 6091 break; 6092 } 6093 #endif 6094 #endif 6095 6096 #endif /* ENABLE_LE_CENTRAL */ 6097 6098 #ifdef ENABLE_LE_PERIPHERAL 6099 // le advertisement control 6100 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6101 // stop if: 6102 // - parameter change required 6103 // - random address used in advertising and changes 6104 // - it's disabled 6105 // - whitelist change required but used for advertisement filter policy 6106 // - resolving list modified 6107 // - own address changes 6108 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6109 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6110 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6111 if (advertising_change || 6112 (advertising_uses_random_address && random_address_change) || 6113 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6114 (advertising_uses_whitelist && whitelist_modification_pending) || 6115 resolving_list_modification_pending || 6116 random_address_change) { 6117 6118 advertising_stop = true; 6119 } 6120 } 6121 6122 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6123 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6124 btstack_linked_list_iterator_t it; 6125 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6126 while (btstack_linked_list_iterator_has_next(&it)){ 6127 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6128 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6129 // stop if: 6130 // - parameter change required 6131 // - random address used in connectable advertising and changes 6132 // - it's disabled 6133 // - whitelist change required but used for advertisement filter policy 6134 // - resolving list modified 6135 // - own address changes 6136 // - advertisement set will be removed 6137 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6138 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6139 bool advertising_uses_random_address = 6140 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6141 advertising_connectable; 6142 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6143 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6144 bool advertising_set_random_address_change = 6145 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6146 bool advertising_set_will_be_removed = 6147 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6148 if (advertising_parameter_change || 6149 (advertising_uses_random_address && advertising_set_random_address_change) || 6150 (advertising_enabled == false) || 6151 (advertising_uses_whitelist && whitelist_modification_pending) || 6152 resolving_list_modification_pending || 6153 advertising_set_will_be_removed) { 6154 6155 advertising_stop = true; 6156 advertising_stop_set = advertising_set; 6157 break; 6158 } 6159 } 6160 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6161 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6162 // stop if: 6163 // - it's disabled 6164 // - parameter change required 6165 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6166 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6167 if ((periodic_enabled == false) || periodic_parameter_change){ 6168 periodic_advertising_stop = true; 6169 advertising_stop_set = advertising_set; 6170 } 6171 } 6172 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6173 } 6174 } 6175 #endif 6176 6177 #endif 6178 6179 6180 // Phase 2: stop everything that should be off during modifications 6181 6182 6183 // 2.1 Outgoing connection 6184 #ifdef ENABLE_LE_CENTRAL 6185 if (connecting_stop){ 6186 hci_send_cmd(&hci_le_create_connection_cancel); 6187 return true; 6188 } 6189 #endif 6190 6191 // 2.2 Scanning 6192 #ifdef ENABLE_LE_CENTRAL 6193 if (scanning_stop){ 6194 hci_stack->le_scanning_active = false; 6195 hci_le_scan_stop(); 6196 return true; 6197 } 6198 6199 // 2.3 Periodic Sync 6200 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6201 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6202 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6203 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6204 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6205 return true; 6206 } 6207 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6208 if (periodic_sync_stop){ 6209 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6210 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6211 return true; 6212 } 6213 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6214 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6215 #endif /* ENABLE_LE_CENTRAL */ 6216 6217 // 2.4 Advertising: legacy, extended, periodic 6218 #ifdef ENABLE_LE_PERIPHERAL 6219 if (advertising_stop){ 6220 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6221 if (hci_extended_advertising_supported()) { 6222 uint8_t advertising_stop_handle; 6223 if (advertising_stop_set != NULL){ 6224 advertising_stop_handle = advertising_stop_set->advertising_handle; 6225 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6226 } else { 6227 advertising_stop_handle = 0; 6228 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6229 } 6230 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6231 const uint16_t durations[] = { 0 }; 6232 const uint16_t max_events[] = { 0 }; 6233 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6234 } else 6235 #endif 6236 { 6237 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6238 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6239 } 6240 return true; 6241 } 6242 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6243 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6244 if (periodic_advertising_stop){ 6245 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6246 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6247 return true; 6248 } 6249 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6250 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6251 #endif /* ENABLE_LE_PERIPHERAL */ 6252 6253 6254 // Phase 3: modify 6255 6256 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6257 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6258 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6259 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6260 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6261 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6262 #endif 6263 return true; 6264 } 6265 6266 #ifdef ENABLE_LE_CENTRAL 6267 if (hci_stack->le_scanning_param_update){ 6268 hci_stack->le_scanning_param_update = false; 6269 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6270 if (hci_extended_advertising_supported()){ 6271 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6272 uint8_t scan_types[2]; 6273 uint16_t scan_intervals[2]; 6274 uint16_t scan_windows[2]; 6275 6276 uint8_t i; 6277 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6278 for (i=0;i<num_phys;i++){ 6279 scan_types[i] = hci_stack->le_scan_type; 6280 scan_intervals[i] = hci_stack->le_scan_interval; 6281 scan_windows[i] = hci_stack->le_scan_window; 6282 } 6283 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6284 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6285 } else 6286 #endif 6287 { 6288 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6289 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6290 } 6291 return true; 6292 } 6293 #endif 6294 6295 #ifdef ENABLE_LE_PERIPHERAL 6296 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6297 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6298 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6299 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6300 if (hci_extended_advertising_supported()){ 6301 // map advertisment type to advertising event properties 6302 uint16_t adv_event_properties = 0; 6303 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6304 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6305 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6306 } 6307 hci_stack->le_advertising_set_in_current_command = 0; 6308 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6309 0, 6310 adv_event_properties, 6311 hci_stack->le_advertisements_interval_min, 6312 hci_stack->le_advertisements_interval_max, 6313 hci_stack->le_advertisements_channel_map, 6314 hci_stack->le_advertisements_own_addr_type, 6315 hci_stack->le_advertisements_direct_address_type, 6316 hci_stack->le_advertisements_direct_address, 6317 hci_stack->le_advertisements_filter_policy, 6318 0x7f, // tx power: no preference 6319 0x01, // primary adv phy: LE 1M 6320 0, // secondary adv max skip 6321 0x01, // secondary adv phy 6322 0, // adv sid 6323 0 // scan request notification 6324 ); 6325 } else 6326 #endif 6327 { 6328 hci_send_cmd(&hci_le_set_advertising_parameters, 6329 hci_stack->le_advertisements_interval_min, 6330 hci_stack->le_advertisements_interval_max, 6331 hci_stack->le_advertisements_type, 6332 hci_stack->le_advertisements_own_addr_type, 6333 hci_stack->le_advertisements_direct_address_type, 6334 hci_stack->le_advertisements_direct_address, 6335 hci_stack->le_advertisements_channel_map, 6336 hci_stack->le_advertisements_filter_policy); 6337 } 6338 return true; 6339 } 6340 6341 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6342 // assumption: only set if extended advertising is supported 6343 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6344 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6345 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6346 return true; 6347 } 6348 #endif 6349 6350 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6351 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6352 uint8_t adv_data_clean[31]; 6353 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6354 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6355 hci_stack->le_advertisements_data_len); 6356 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6357 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6358 if (hci_extended_advertising_supported()){ 6359 hci_stack->le_advertising_set_in_current_command = 0; 6360 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6361 } else 6362 #endif 6363 { 6364 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6365 } 6366 return true; 6367 } 6368 6369 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6370 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6371 uint8_t scan_data_clean[31]; 6372 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6373 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6374 hci_stack->le_scan_response_data_len); 6375 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6376 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6377 if (hci_extended_advertising_supported()){ 6378 hci_stack->le_advertising_set_in_current_command = 0; 6379 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6380 } else 6381 #endif 6382 { 6383 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6384 } 6385 return true; 6386 } 6387 6388 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6389 if (hci_extended_advertising_supported()) { 6390 btstack_linked_list_iterator_t it; 6391 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6392 while (btstack_linked_list_iterator_has_next(&it)){ 6393 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6394 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6395 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6396 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6397 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6398 return true; 6399 } 6400 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6401 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6402 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6403 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6404 advertising_set->advertising_handle, 6405 advertising_set->extended_params.advertising_event_properties, 6406 advertising_set->extended_params.primary_advertising_interval_min, 6407 advertising_set->extended_params.primary_advertising_interval_max, 6408 advertising_set->extended_params.primary_advertising_channel_map, 6409 advertising_set->extended_params.own_address_type, 6410 advertising_set->extended_params.peer_address_type, 6411 advertising_set->extended_params.peer_address, 6412 advertising_set->extended_params.advertising_filter_policy, 6413 advertising_set->extended_params.advertising_tx_power, 6414 advertising_set->extended_params.primary_advertising_phy, 6415 advertising_set->extended_params.secondary_advertising_max_skip, 6416 advertising_set->extended_params.secondary_advertising_phy, 6417 advertising_set->extended_params.advertising_sid, 6418 advertising_set->extended_params.scan_request_notification_enable 6419 ); 6420 return true; 6421 } 6422 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6423 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6424 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6425 return true; 6426 } 6427 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6428 uint16_t pos = advertising_set->adv_data_pos; 6429 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6430 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6431 if ((operation & 0x02) != 0){ 6432 // last fragment or complete data 6433 operation |= 2; 6434 advertising_set->adv_data_pos = 0; 6435 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6436 } else { 6437 advertising_set->adv_data_pos += data_to_upload; 6438 } 6439 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6440 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6441 return true; 6442 } 6443 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6444 uint16_t pos = advertising_set->scan_data_pos; 6445 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6446 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6447 if ((operation & 0x02) != 0){ 6448 advertising_set->scan_data_pos = 0; 6449 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6450 } else { 6451 advertising_set->scan_data_pos += data_to_upload; 6452 } 6453 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6454 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6455 return true; 6456 } 6457 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6458 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6459 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6460 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6461 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6462 advertising_set->advertising_handle, 6463 advertising_set->periodic_params.periodic_advertising_interval_min, 6464 advertising_set->periodic_params.periodic_advertising_interval_max, 6465 advertising_set->periodic_params.periodic_advertising_properties); 6466 return true; 6467 } 6468 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6469 uint16_t pos = advertising_set->periodic_data_pos; 6470 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6471 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6472 if ((operation & 0x02) != 0){ 6473 // last fragment or complete data 6474 operation |= 2; 6475 advertising_set->periodic_data_pos = 0; 6476 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6477 } else { 6478 advertising_set->periodic_data_pos += data_to_upload; 6479 } 6480 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6481 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6482 return true; 6483 } 6484 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6485 } 6486 } 6487 #endif 6488 6489 #endif 6490 6491 #ifdef ENABLE_LE_CENTRAL 6492 // if connect with whitelist was active and is not cancelled yet, wait until next time 6493 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6494 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6495 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6496 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6497 #endif 6498 #endif 6499 6500 // LE Whitelist Management 6501 if (whitelist_modification_pending){ 6502 // add/remove entries 6503 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6504 while (btstack_linked_list_iterator_has_next(&lit)){ 6505 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6506 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6507 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6508 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6509 bd_addr_type_t address_type = entry->address_type; 6510 bd_addr_t address; 6511 memcpy(address, entry->address, 6); 6512 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6513 // remove from whitelist if not scheduled for re-addition 6514 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6515 btstack_memory_whitelist_entry_free(entry); 6516 } 6517 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6518 return true; 6519 } 6520 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6521 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6522 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6523 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6524 return true; 6525 } 6526 } 6527 } 6528 6529 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6530 // LE Resolving List Management 6531 if (resolving_list_supported) { 6532 uint16_t i; 6533 switch (hci_stack->le_resolving_list_state) { 6534 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6535 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6536 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6537 return true; 6538 case LE_RESOLVING_LIST_READ_SIZE: 6539 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6540 hci_send_cmd(&hci_le_read_resolving_list_size); 6541 return true; 6542 case LE_RESOLVING_LIST_SEND_CLEAR: 6543 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6544 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6545 sizeof(hci_stack->le_resolving_list_add_entries)); 6546 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6547 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6548 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6549 sizeof(hci_stack->le_resolving_list_remove_entries)); 6550 hci_send_cmd(&hci_le_clear_resolving_list); 6551 return true; 6552 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6553 // first remove old entries 6554 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6555 uint8_t offset = i >> 3; 6556 uint8_t mask = 1 << (i & 7); 6557 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6558 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6559 bd_addr_t peer_identity_addreses; 6560 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6561 sm_key_t peer_irk; 6562 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6563 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6564 6565 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6566 // trigger whitelist entry 'update' (work around for controller bug) 6567 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6568 while (btstack_linked_list_iterator_has_next(&lit)) { 6569 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6570 if (entry->address_type != peer_identity_addr_type) continue; 6571 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6572 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6573 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6574 } 6575 #endif 6576 6577 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6578 peer_identity_addreses); 6579 return true; 6580 } 6581 6582 // then add new entries 6583 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6584 uint8_t offset = i >> 3; 6585 uint8_t mask = 1 << (i & 7); 6586 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6587 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6588 bd_addr_t peer_identity_addreses; 6589 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6590 sm_key_t peer_irk; 6591 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6592 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6593 if (btstack_is_null(peer_irk, 16)) continue; 6594 const uint8_t *local_irk = gap_get_persistent_irk(); 6595 // command uses format specifier 'P' that stores 16-byte value without flip 6596 uint8_t local_irk_flipped[16]; 6597 uint8_t peer_irk_flipped[16]; 6598 reverse_128(local_irk, local_irk_flipped); 6599 reverse_128(peer_irk, peer_irk_flipped); 6600 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6601 peer_irk_flipped, local_irk_flipped); 6602 return true; 6603 } 6604 6605 // finally, set privacy mode 6606 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6607 uint8_t offset = i >> 3; 6608 uint8_t mask = 1 << (i & 7); 6609 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6610 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6611 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6612 // Network Privacy Mode is default 6613 continue; 6614 } 6615 bd_addr_t peer_identity_address; 6616 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6617 sm_key_t peer_irk; 6618 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6619 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6620 if (btstack_is_null(peer_irk, 16)) continue; 6621 // command uses format specifier 'P' that stores 16-byte value without flip 6622 uint8_t peer_irk_flipped[16]; 6623 reverse_128(peer_irk, peer_irk_flipped); 6624 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6625 return true; 6626 } 6627 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6628 break; 6629 6630 default: 6631 break; 6632 } 6633 } 6634 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6635 #endif 6636 6637 #ifdef ENABLE_LE_CENTRAL 6638 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6639 // LE Whitelist Management 6640 if (periodic_list_modification_pending){ 6641 // add/remove entries 6642 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6643 while (btstack_linked_list_iterator_has_next(&lit)){ 6644 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6645 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6646 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6647 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6648 return true; 6649 } 6650 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6651 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6652 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6653 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6654 return true; 6655 } 6656 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6657 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6658 btstack_memory_periodic_advertiser_list_entry_free(entry); 6659 } 6660 } 6661 } 6662 #endif 6663 #endif 6664 6665 #ifdef ENABLE_LE_CENTRAL 6666 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6667 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6668 if (hci_stack->le_past_set_default_params){ 6669 hci_stack->le_past_set_default_params = false; 6670 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6671 hci_stack->le_past_mode, 6672 hci_stack->le_past_skip, 6673 hci_stack->le_past_sync_timeout, 6674 hci_stack->le_past_cte_type); 6675 return true; 6676 } 6677 #endif 6678 #endif 6679 #endif 6680 6681 // post-pone all actions until stack is fully working 6682 if (hci_stack->state != HCI_STATE_WORKING) return false; 6683 6684 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6685 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6686 6687 // Phase 4: restore state 6688 6689 #ifdef ENABLE_LE_CENTRAL 6690 // re-start scanning 6691 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6692 hci_stack->le_scanning_active = true; 6693 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6694 if (hci_extended_advertising_supported()){ 6695 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6696 } else 6697 #endif 6698 { 6699 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6700 } 6701 return true; 6702 } 6703 #endif 6704 6705 #ifdef ENABLE_LE_CENTRAL 6706 // re-start connecting 6707 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6708 bd_addr_t null_addr; 6709 memset(null_addr, 0, 6); 6710 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6711 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6712 hci_send_le_create_connection(1, 0, null_addr); 6713 return true; 6714 } 6715 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6716 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6717 switch(hci_stack->le_periodic_sync_request){ 6718 case LE_CONNECTING_DIRECT: 6719 case LE_CONNECTING_WHITELIST: 6720 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6721 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6722 hci_stack->le_periodic_sync_options, 6723 hci_stack->le_periodic_sync_advertising_sid, 6724 hci_stack->le_periodic_sync_advertiser_address_type, 6725 hci_stack->le_periodic_sync_advertiser_address, 6726 hci_stack->le_periodic_sync_skip, 6727 hci_stack->le_periodic_sync_timeout, 6728 hci_stack->le_periodic_sync_cte_type); 6729 return true; 6730 default: 6731 break; 6732 } 6733 } 6734 #endif 6735 #endif 6736 6737 #ifdef ENABLE_LE_PERIPHERAL 6738 // re-start advertising 6739 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6740 // check if advertisements should be enabled given 6741 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6742 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6743 6744 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6745 if (hci_extended_advertising_supported()){ 6746 const uint8_t advertising_handles[] = { 0 }; 6747 const uint16_t durations[] = { 0 }; 6748 const uint16_t max_events[] = { 0 }; 6749 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6750 } else 6751 #endif 6752 { 6753 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6754 } 6755 return true; 6756 } 6757 6758 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6759 if (hci_extended_advertising_supported()) { 6760 btstack_linked_list_iterator_t it; 6761 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6762 while (btstack_linked_list_iterator_has_next(&it)) { 6763 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6764 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6765 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6766 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6767 const uint16_t durations[] = { advertising_set->enable_timeout }; 6768 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6769 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6770 return true; 6771 } 6772 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6773 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6774 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6775 uint8_t enable = 1; 6776 if (advertising_set->periodic_include_adi){ 6777 enable |= 2; 6778 } 6779 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6780 return true; 6781 } 6782 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6783 } 6784 } 6785 #endif 6786 #endif 6787 6788 return false; 6789 } 6790 6791 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6792 static bool hci_run_iso_tasks(void){ 6793 btstack_linked_list_iterator_t it; 6794 6795 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6796 return false; 6797 } 6798 6799 // BIG 6800 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6801 while (btstack_linked_list_iterator_has_next(&it)){ 6802 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6803 switch (big->state){ 6804 case LE_AUDIO_BIG_STATE_CREATE: 6805 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6806 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6807 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6808 hci_send_cmd(&hci_le_create_big, 6809 big->params->big_handle, 6810 big->params->advertising_handle, 6811 big->params->num_bis, 6812 big->params->sdu_interval_us, 6813 big->params->max_sdu, 6814 big->params->max_transport_latency_ms, 6815 big->params->rtn, 6816 big->params->phy, 6817 big->params->packing, 6818 big->params->framing, 6819 big->params->encryption, 6820 big->params->broadcast_code); 6821 return true; 6822 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6823 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6824 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); 6825 return true; 6826 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6827 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6828 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6829 return true; 6830 case LE_AUDIO_BIG_STATE_TERMINATE: 6831 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6832 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6833 return true; 6834 default: 6835 break; 6836 } 6837 } 6838 6839 // BIG Sync 6840 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6841 while (btstack_linked_list_iterator_has_next(&it)){ 6842 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6843 switch (big_sync->state){ 6844 case LE_AUDIO_BIG_STATE_CREATE: 6845 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6846 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6847 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6848 hci_send_cmd(&hci_le_big_create_sync, 6849 big_sync->params->big_handle, 6850 big_sync->params->sync_handle, 6851 big_sync->params->encryption, 6852 big_sync->params->broadcast_code, 6853 big_sync->params->mse, 6854 big_sync->params->big_sync_timeout_10ms, 6855 big_sync->params->num_bis, 6856 big_sync->params->bis_indices); 6857 return true; 6858 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6859 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6860 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); 6861 return true; 6862 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6863 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6864 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6865 return true; 6866 case LE_AUDIO_BIG_STATE_TERMINATE: 6867 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6868 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6869 return true; 6870 default: 6871 break; 6872 } 6873 } 6874 6875 // CIG 6876 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6877 while (btstack_linked_list_iterator_has_next(&it)) { 6878 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6879 uint8_t i; 6880 // Set CIG Parameters 6881 uint8_t cis_id[MAX_NR_CIS]; 6882 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6883 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6884 uint8_t phy_c_to_p[MAX_NR_CIS]; 6885 uint8_t phy_p_to_c[MAX_NR_CIS]; 6886 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6887 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6888 switch (cig->state) { 6889 case LE_AUDIO_CIG_STATE_CREATE: 6890 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6891 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6892 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6893 le_audio_cig_params_t * params = cig->params; 6894 for (i = 0; i < params->num_cis; i++) { 6895 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6896 cis_id[i] = cis_params->cis_id; 6897 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6898 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6899 phy_c_to_p[i] = cis_params->phy_c_to_p; 6900 phy_p_to_c[i] = cis_params->phy_p_to_c; 6901 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6902 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6903 } 6904 hci_send_cmd(&hci_le_set_cig_parameters, 6905 cig->cig_id, 6906 params->sdu_interval_c_to_p, 6907 params->sdu_interval_p_to_c, 6908 params->worst_case_sca, 6909 params->packing, 6910 params->framing, 6911 params->max_transport_latency_c_to_p, 6912 params->max_transport_latency_p_to_c, 6913 params->num_cis, 6914 cis_id, 6915 max_sdu_c_to_p, 6916 max_sdu_p_to_c, 6917 phy_c_to_p, 6918 phy_p_to_c, 6919 rtn_c_to_p, 6920 rtn_p_to_c 6921 ); 6922 return true; 6923 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6924 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6925 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6926 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6927 for (i=0;i<cig->num_cis;i++){ 6928 cig->cis_setup_active[i] = true; 6929 } 6930 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6931 return true; 6932 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6933 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6934 // find next path to setup 6935 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6936 if (cig->cis_established[cis_index] == false) { 6937 continue; 6938 } 6939 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6940 bool setup = true; 6941 if (cis_direction == 0){ 6942 // 0 - input - host to controller 6943 // we are central => central to peripheral 6944 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6945 } else { 6946 // 1 - output - controller to host 6947 // we are central => peripheral to central 6948 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6949 } 6950 if (setup){ 6951 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6952 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6953 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6954 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); 6955 return true; 6956 } 6957 cig->state_vars.next_cis++; 6958 } 6959 // emit done 6960 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6961 default: 6962 break; 6963 } 6964 } 6965 6966 // CIS Accept/Reject 6967 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6968 while (btstack_linked_list_iterator_has_next(&it)) { 6969 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6970 hci_con_handle_t con_handle; 6971 switch (iso_stream->state){ 6972 case HCI_ISO_STREAM_W2_ACCEPT: 6973 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6974 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6975 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6976 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6977 return true; 6978 case HCI_ISO_STREAM_W2_REJECT: 6979 con_handle = iso_stream->cis_handle; 6980 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6981 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6982 hci_iso_stream_finalize(iso_stream); 6983 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6984 return true; 6985 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6986 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6987 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6988 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6989 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); 6990 break; 6991 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6992 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6993 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6994 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6995 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); 6996 break; 6997 default: 6998 break; 6999 } 7000 } 7001 7002 return false; 7003 } 7004 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7005 #endif 7006 7007 static bool hci_run_general_pending_commands(void){ 7008 btstack_linked_item_t * it; 7009 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7010 hci_connection_t * connection = (hci_connection_t *) it; 7011 7012 switch(connection->state){ 7013 case SEND_CREATE_CONNECTION: 7014 switch(connection->address_type){ 7015 #ifdef ENABLE_CLASSIC 7016 case BD_ADDR_TYPE_ACL: 7017 log_info("sending hci_create_connection"); 7018 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7019 break; 7020 #endif 7021 default: 7022 #ifdef ENABLE_BLE 7023 #ifdef ENABLE_LE_CENTRAL 7024 log_info("sending hci_le_create_connection"); 7025 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7026 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7027 hci_send_le_create_connection(0, connection->address_type, connection->address); 7028 connection->state = SENT_CREATE_CONNECTION; 7029 #endif 7030 #endif 7031 break; 7032 } 7033 return true; 7034 7035 #ifdef ENABLE_CLASSIC 7036 case RECEIVED_CONNECTION_REQUEST: 7037 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7038 log_info("sending hci_accept_connection_request"); 7039 connection->state = ACCEPTED_CONNECTION_REQUEST; 7040 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7041 return true; 7042 } 7043 break; 7044 #endif 7045 case SEND_DISCONNECT: 7046 connection->state = SENT_DISCONNECT; 7047 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7048 return true; 7049 7050 default: 7051 break; 7052 } 7053 7054 // no further commands if connection is about to get shut down 7055 if (connection->state == SENT_DISCONNECT) continue; 7056 7057 #ifdef ENABLE_CLASSIC 7058 7059 // Handling link key request requires remote supported features 7060 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7061 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7062 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7063 7064 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7065 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7066 if (have_link_key && security_level_sufficient){ 7067 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7068 } else { 7069 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7070 } 7071 return true; 7072 } 7073 7074 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7075 log_info("denying to pin request"); 7076 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7077 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7078 return true; 7079 } 7080 7081 // security assessment requires remote features 7082 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7083 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7084 hci_ssp_assess_security_on_io_cap_request(connection); 7085 // 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 7086 } 7087 7088 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7089 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7090 // set authentication requirements: 7091 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7092 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7093 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7094 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7095 authreq |= 1; 7096 } 7097 bool bonding = hci_stack->bondable; 7098 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7099 // if we have received IO Cap Response, we're in responder role 7100 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7101 if (bonding && !remote_bonding){ 7102 log_info("Remote not bonding, dropping local flag"); 7103 bonding = false; 7104 } 7105 } 7106 if (bonding){ 7107 if (connection->bonding_flags & BONDING_DEDICATED){ 7108 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7109 } else { 7110 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7111 } 7112 } 7113 uint8_t have_oob_data = 0; 7114 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7115 if (connection->classic_oob_c_192 != NULL){ 7116 have_oob_data |= 1; 7117 } 7118 if (connection->classic_oob_c_256 != NULL){ 7119 have_oob_data |= 2; 7120 } 7121 #endif 7122 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7123 return true; 7124 } 7125 7126 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7127 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7128 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7129 return true; 7130 } 7131 7132 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7133 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7134 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7135 const uint8_t zero[16] = { 0 }; 7136 const uint8_t * r_192 = zero; 7137 const uint8_t * c_192 = zero; 7138 const uint8_t * r_256 = zero; 7139 const uint8_t * c_256 = zero; 7140 // verify P-256 OOB 7141 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7142 c_256 = connection->classic_oob_c_256; 7143 if (connection->classic_oob_r_256 != NULL) { 7144 r_256 = connection->classic_oob_r_256; 7145 } 7146 } 7147 // verify P-192 OOB 7148 if ((connection->classic_oob_c_192 != NULL)) { 7149 c_192 = connection->classic_oob_c_192; 7150 if (connection->classic_oob_r_192 != NULL) { 7151 r_192 = connection->classic_oob_r_192; 7152 } 7153 } 7154 7155 // assess security 7156 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7157 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7158 if (need_level_4 && !can_reach_level_4){ 7159 log_info("Level 4 required, but not possible -> abort"); 7160 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7161 // send oob negative reply 7162 c_256 = NULL; 7163 c_192 = NULL; 7164 } 7165 7166 // Reply 7167 if (c_256 != zero) { 7168 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7169 } else if (c_192 != zero){ 7170 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7171 } else { 7172 hci_stack->classic_oob_con_handle = connection->con_handle; 7173 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7174 } 7175 return true; 7176 } 7177 #endif 7178 7179 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7180 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7181 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7182 return true; 7183 } 7184 7185 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7186 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7187 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7188 return true; 7189 } 7190 7191 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7192 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7193 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7194 return true; 7195 } 7196 7197 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7198 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7199 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7200 connection->state = SENT_DISCONNECT; 7201 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7202 return true; 7203 } 7204 7205 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7206 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7207 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7208 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7209 return true; 7210 } 7211 7212 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7213 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7214 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7215 return true; 7216 } 7217 7218 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7219 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7220 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7221 return true; 7222 } 7223 7224 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7225 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7226 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7227 return true; 7228 } 7229 7230 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7231 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7232 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7233 return true; 7234 } 7235 7236 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7237 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7238 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7239 return true; 7240 } 7241 #endif 7242 7243 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7244 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7245 #ifdef ENABLE_CLASSIC 7246 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7247 #endif 7248 if (connection->state != SENT_DISCONNECT){ 7249 connection->state = SENT_DISCONNECT; 7250 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7251 return true; 7252 } 7253 } 7254 7255 #ifdef ENABLE_CLASSIC 7256 uint16_t sniff_min_interval; 7257 switch (connection->sniff_min_interval){ 7258 case 0: 7259 break; 7260 case 0xffff: 7261 connection->sniff_min_interval = 0; 7262 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7263 return true; 7264 default: 7265 sniff_min_interval = connection->sniff_min_interval; 7266 connection->sniff_min_interval = 0; 7267 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7268 return true; 7269 } 7270 7271 if (connection->sniff_subrating_max_latency != 0xffff){ 7272 uint16_t max_latency = connection->sniff_subrating_max_latency; 7273 connection->sniff_subrating_max_latency = 0; 7274 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7275 return true; 7276 } 7277 7278 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7279 uint8_t service_type = (uint8_t) connection->qos_service_type; 7280 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7281 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); 7282 return true; 7283 } 7284 7285 if (connection->request_role != HCI_ROLE_INVALID){ 7286 hci_role_t role = connection->request_role; 7287 connection->request_role = HCI_ROLE_INVALID; 7288 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7289 return true; 7290 } 7291 #endif 7292 7293 if (connection->gap_connection_tasks != 0){ 7294 #ifdef ENABLE_CLASSIC 7295 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7296 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7297 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7298 return true; 7299 } 7300 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7301 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7302 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7303 return true; 7304 } 7305 #endif 7306 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7307 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7308 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7309 return true; 7310 } 7311 #ifdef ENABLE_BLE 7312 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7313 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7314 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7315 return true; 7316 } 7317 #endif 7318 } 7319 7320 #ifdef ENABLE_BLE 7321 switch (connection->le_con_parameter_update_state){ 7322 // response to L2CAP CON PARAMETER UPDATE REQUEST 7323 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7324 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7325 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7326 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7327 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7328 return true; 7329 case CON_PARAMETER_UPDATE_REPLY: 7330 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7331 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7332 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7333 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7334 return true; 7335 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7336 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7337 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7338 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7339 return true; 7340 default: 7341 break; 7342 } 7343 if (connection->le_phy_update_all_phys != 0xffu){ 7344 uint8_t all_phys = connection->le_phy_update_all_phys; 7345 connection->le_phy_update_all_phys = 0xff; 7346 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); 7347 return true; 7348 } 7349 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7350 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7351 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7352 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7353 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7354 return true; 7355 } 7356 if (connection->le_past_advertising_handle != 0xff){ 7357 uint8_t advertising_handle = connection->le_past_advertising_handle; 7358 connection->le_past_advertising_handle = 0xff; 7359 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7360 return true; 7361 } 7362 #endif 7363 #endif 7364 } 7365 return false; 7366 } 7367 7368 static void hci_run(void){ 7369 7370 // stack state sub statemachines 7371 switch (hci_stack->state) { 7372 case HCI_STATE_INITIALIZING: 7373 hci_initializing_run(); 7374 break; 7375 case HCI_STATE_HALTING: 7376 hci_halting_run(); 7377 break; 7378 case HCI_STATE_FALLING_ASLEEP: 7379 hci_falling_asleep_run(); 7380 break; 7381 default: 7382 break; 7383 } 7384 7385 // allow to run after initialization to working transition 7386 if (hci_stack->state != HCI_STATE_WORKING){ 7387 return; 7388 } 7389 7390 bool done; 7391 7392 // send continuation fragments first, as they block the prepared packet buffer 7393 done = hci_run_acl_fragments(); 7394 if (done) return; 7395 7396 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7397 done = hci_run_iso_fragments(); 7398 if (done) return; 7399 #endif 7400 7401 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7402 // send host num completed packets next as they don't require num_cmd_packets > 0 7403 if (!hci_can_send_comand_packet_transport()) return; 7404 if (hci_stack->host_completed_packets){ 7405 hci_host_num_completed_packets(); 7406 return; 7407 } 7408 #endif 7409 7410 if (!hci_can_send_command_packet_now()) return; 7411 7412 // global/non-connection oriented commands 7413 7414 7415 #ifdef ENABLE_CLASSIC 7416 // general gap classic 7417 done = hci_run_general_gap_classic(); 7418 if (done) return; 7419 #endif 7420 7421 #ifdef ENABLE_BLE 7422 // general gap le 7423 done = hci_run_general_gap_le(); 7424 if (done) return; 7425 7426 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7427 // ISO related tasks, e.g. BIG create/terminate/sync 7428 done = hci_run_iso_tasks(); 7429 if (done) return; 7430 #endif 7431 #endif 7432 7433 // send pending HCI commands 7434 hci_run_general_pending_commands(); 7435 } 7436 7437 #ifdef ENABLE_CLASSIC 7438 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7439 // bits 6-9 are 'don't use' 7440 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7441 7442 // restrict packet types to local and remote supported 7443 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7444 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7445 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7446 } 7447 #endif 7448 7449 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7450 // house-keeping 7451 7452 #ifdef ENABLE_CLASSIC 7453 bd_addr_t addr; 7454 hci_connection_t * conn; 7455 #endif 7456 #ifdef ENABLE_LE_CENTRAL 7457 uint8_t initiator_filter_policy; 7458 #endif 7459 7460 uint16_t opcode = little_endian_read_16(packet, 0); 7461 switch (opcode) { 7462 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7463 hci_stack->loopback_mode = packet[3]; 7464 break; 7465 7466 #ifdef ENABLE_CLASSIC 7467 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7468 reverse_bd_addr(&packet[3], addr); 7469 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7470 7471 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7472 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7473 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7474 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7475 } 7476 7477 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7478 if (!conn) { 7479 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7480 if (!conn) { 7481 // notify client that alloc failed 7482 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7483 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7484 } 7485 conn->state = SEND_CREATE_CONNECTION; 7486 } 7487 7488 log_info("conn state %u", conn->state); 7489 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7490 switch (conn->state) { 7491 // if connection active exists 7492 case OPEN: 7493 // and OPEN, emit connection complete command 7494 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7495 // packet not sent to controller 7496 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7497 case RECEIVED_DISCONNECTION_COMPLETE: 7498 // create connection triggered in disconnect complete event, let's do it now 7499 break; 7500 case SEND_CREATE_CONNECTION: 7501 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7502 if (hci_classic_operation_active()){ 7503 return ERROR_CODE_SUCCESS; 7504 } 7505 #endif 7506 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7507 break; 7508 default: 7509 // otherwise, just ignore as it is already in the open process 7510 // packet not sent to controller 7511 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7512 } 7513 conn->state = SENT_CREATE_CONNECTION; 7514 7515 // track outgoing connection 7516 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7517 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7518 break; 7519 7520 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7521 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7522 if (conn == NULL) { 7523 // neither SCO nor ACL connection for con handle 7524 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7525 } else { 7526 uint16_t remote_supported_sco_packets; 7527 switch (conn->address_type){ 7528 case BD_ADDR_TYPE_ACL: 7529 // assert SCO connection does not exit 7530 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7531 return ERROR_CODE_COMMAND_DISALLOWED; 7532 } 7533 // cache remote sco packet types 7534 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7535 7536 // allocate connection struct 7537 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7538 HCI_ROLE_MASTER); 7539 if (!conn) { 7540 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7541 } 7542 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7543 break; 7544 case BD_ADDR_TYPE_SCO: 7545 // update of existing SCO connection 7546 break; 7547 default: 7548 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7549 } 7550 } 7551 7552 // conn refers to hci connection of type sco now 7553 7554 conn->state = SENT_CREATE_CONNECTION; 7555 7556 // track outgoing connection to handle command status with error 7557 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7558 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7559 7560 // setup_synchronous_connection? Voice setting at offset 22 7561 // TODO: compare to current setting if sco connection already active 7562 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7563 7564 // derive sco payload length from packet types 7565 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7566 break; 7567 7568 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7569 // get SCO connection 7570 reverse_bd_addr(&packet[3], addr); 7571 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7572 if (conn == NULL){ 7573 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7574 } 7575 7576 conn->state = ACCEPTED_CONNECTION_REQUEST; 7577 7578 // track outgoing connection to handle command status with error 7579 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7580 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7581 7582 // accept_synchronous_connection? Voice setting at offset 18 7583 // TODO: compare to current setting if sco connection already active 7584 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7585 7586 // derive sco payload length from packet types 7587 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7588 break; 7589 #endif 7590 7591 #ifdef ENABLE_BLE 7592 #ifdef ENABLE_LE_CENTRAL 7593 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7594 // white list used? 7595 initiator_filter_policy = packet[7]; 7596 switch (initiator_filter_policy) { 7597 case 0: 7598 // whitelist not used 7599 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7600 break; 7601 case 1: 7602 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7603 break; 7604 default: 7605 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7606 break; 7607 } 7608 // track outgoing connection 7609 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7610 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7611 break; 7612 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7613 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7614 // white list used? 7615 initiator_filter_policy = packet[3]; 7616 switch (initiator_filter_policy) { 7617 case 0: 7618 // whitelist not used 7619 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7620 break; 7621 case 1: 7622 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7623 break; 7624 default: 7625 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7626 break; 7627 } 7628 // track outgoing connection 7629 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7630 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7631 break; 7632 #endif 7633 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7634 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7635 break; 7636 #endif 7637 #endif /* ENABLE_BLE */ 7638 default: 7639 break; 7640 } 7641 7642 hci_stack->num_cmd_packets--; 7643 7644 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7645 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7646 if (err != 0){ 7647 return ERROR_CODE_HARDWARE_FAILURE; 7648 } 7649 return ERROR_CODE_SUCCESS; 7650 } 7651 7652 // disconnect because of security block 7653 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7654 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7655 if (!connection) return; 7656 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7657 } 7658 7659 7660 // Configure Secure Simple Pairing 7661 7662 #ifdef ENABLE_CLASSIC 7663 7664 // enable will enable SSP during init 7665 void gap_ssp_set_enable(int enable){ 7666 hci_stack->ssp_enable = enable; 7667 } 7668 7669 static int hci_local_ssp_activated(void){ 7670 return gap_ssp_supported() && hci_stack->ssp_enable; 7671 } 7672 7673 // if set, BTstack will respond to io capability request using authentication requirement 7674 void gap_ssp_set_io_capability(int io_capability){ 7675 hci_stack->ssp_io_capability = io_capability; 7676 } 7677 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7678 hci_stack->ssp_authentication_requirement = authentication_requirement; 7679 } 7680 7681 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7682 void gap_ssp_set_auto_accept(int auto_accept){ 7683 hci_stack->ssp_auto_accept = auto_accept; 7684 } 7685 7686 void gap_secure_connections_enable(bool enable){ 7687 hci_stack->secure_connections_enable = enable; 7688 } 7689 bool gap_secure_connections_active(void){ 7690 return hci_stack->secure_connections_active; 7691 } 7692 7693 #endif 7694 7695 // va_list part of hci_send_cmd 7696 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7697 if (!hci_can_send_command_packet_now()){ 7698 log_error("hci_send_cmd called but cannot send packet now"); 7699 return ERROR_CODE_COMMAND_DISALLOWED; 7700 } 7701 7702 // for HCI INITIALIZATION 7703 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7704 hci_stack->last_cmd_opcode = cmd->opcode; 7705 7706 hci_reserve_packet_buffer(); 7707 uint8_t * packet = hci_stack->hci_packet_buffer; 7708 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7709 uint8_t status = hci_send_cmd_packet(packet, size); 7710 7711 // release packet buffer on error or for synchronous transport implementations 7712 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7713 hci_release_packet_buffer(); 7714 hci_emit_transport_packet_sent(); 7715 } 7716 7717 return status; 7718 } 7719 7720 /** 7721 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7722 */ 7723 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7724 va_list argptr; 7725 va_start(argptr, cmd); 7726 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7727 va_end(argptr); 7728 return status; 7729 } 7730 7731 // Create various non-HCI events. 7732 // TODO: generalize, use table similar to hci_create_command 7733 7734 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7735 // dump packet 7736 if (dump) { 7737 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7738 } 7739 7740 // dispatch to all event handlers 7741 btstack_linked_list_iterator_t it; 7742 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7743 while (btstack_linked_list_iterator_has_next(&it)){ 7744 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7745 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7746 } 7747 } 7748 7749 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7750 if (!hci_stack->acl_packet_handler) return; 7751 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7752 } 7753 7754 #ifdef ENABLE_CLASSIC 7755 static void hci_notify_if_sco_can_send_now(void){ 7756 // notify SCO sender if waiting 7757 if (!hci_stack->sco_waiting_for_can_send_now) return; 7758 if (hci_can_send_sco_packet_now()){ 7759 hci_stack->sco_waiting_for_can_send_now = 0; 7760 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7761 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7762 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7763 } 7764 } 7765 7766 // parsing end emitting has been merged to reduce code size 7767 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7768 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7769 7770 uint8_t * eir_data; 7771 ad_context_t context; 7772 const uint8_t * name; 7773 uint8_t name_len; 7774 7775 if (size < 3) return; 7776 7777 int event_type = hci_event_packet_get_type(packet); 7778 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7779 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7780 7781 switch (event_type){ 7782 case HCI_EVENT_INQUIRY_RESULT: 7783 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7784 if (size != (3 + (num_responses * 14))) return; 7785 break; 7786 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7787 if (size != 257) return; 7788 if (num_responses != 1) return; 7789 break; 7790 default: 7791 return; 7792 } 7793 7794 // event[1] is set at the end 7795 int i; 7796 for (i=0; i<num_responses;i++){ 7797 memset(event, 0, sizeof(event)); 7798 event[0] = GAP_EVENT_INQUIRY_RESULT; 7799 uint8_t event_size = 27; // if name is not set by EIR 7800 7801 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7802 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7803 (void)memcpy(&event[9], 7804 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7805 3); // class of device 7806 (void)memcpy(&event[12], 7807 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7808 2); // clock offset 7809 7810 switch (event_type){ 7811 case HCI_EVENT_INQUIRY_RESULT: 7812 // 14,15,16,17 = 0, size 18 7813 break; 7814 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7815 event[14] = 1; 7816 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7817 // 16,17 = 0, size 18 7818 break; 7819 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7820 event[14] = 1; 7821 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7822 // EIR packets only contain a single inquiry response 7823 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7824 name = NULL; 7825 // Iterate over EIR data 7826 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7827 uint8_t data_type = ad_iterator_get_data_type(&context); 7828 uint8_t data_size = ad_iterator_get_data_len(&context); 7829 const uint8_t * data = ad_iterator_get_data(&context); 7830 // Prefer Complete Local Name over Shortened Local Name 7831 switch (data_type){ 7832 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7833 if (name) continue; 7834 /* fall through */ 7835 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7836 name = data; 7837 name_len = data_size; 7838 break; 7839 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7840 if (data_size != 8) break; 7841 event[16] = 1; 7842 memcpy(&event[17], data, 8); 7843 break; 7844 default: 7845 break; 7846 } 7847 } 7848 if (name){ 7849 event[25] = 1; 7850 // truncate name if needed 7851 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7852 event[26] = len; 7853 (void)memcpy(&event[27], name, len); 7854 event_size += len; 7855 } 7856 break; 7857 default: 7858 return; 7859 } 7860 event[1] = event_size - 2; 7861 hci_emit_event(event, event_size, 1); 7862 } 7863 } 7864 #endif 7865 7866 void hci_emit_state(void){ 7867 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7868 uint8_t event[3]; 7869 event[0] = BTSTACK_EVENT_STATE; 7870 event[1] = sizeof(event) - 2u; 7871 event[2] = hci_stack->state; 7872 hci_emit_event(event, sizeof(event), 1); 7873 } 7874 7875 #ifdef ENABLE_CLASSIC 7876 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7877 uint8_t event[13]; 7878 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7879 event[1] = sizeof(event) - 2; 7880 event[2] = status; 7881 little_endian_store_16(event, 3, con_handle); 7882 reverse_bd_addr(address, &event[5]); 7883 event[11] = 1; // ACL connection 7884 event[12] = 0; // encryption disabled 7885 hci_emit_event(event, sizeof(event), 1); 7886 } 7887 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7888 if (disable_l2cap_timeouts) return; 7889 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7890 uint8_t event[4]; 7891 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7892 event[1] = sizeof(event) - 2; 7893 little_endian_store_16(event, 2, conn->con_handle); 7894 hci_emit_event(event, sizeof(event), 1); 7895 } 7896 #endif 7897 7898 #ifdef ENABLE_BLE 7899 #ifdef ENABLE_LE_CENTRAL 7900 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){ 7901 uint8_t hci_event[21]; 7902 hci_event[0] = HCI_EVENT_LE_META; 7903 hci_event[1] = sizeof(hci_event) - 2u; 7904 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7905 hci_event[3] = status; 7906 little_endian_store_16(hci_event, 4, con_handle); 7907 hci_event[6] = 0; // TODO: role 7908 hci_event[7] = address_type; 7909 reverse_bd_addr(address, &hci_event[8]); 7910 little_endian_store_16(hci_event, 14, 0); // interval 7911 little_endian_store_16(hci_event, 16, 0); // latency 7912 little_endian_store_16(hci_event, 18, 0); // supervision timeout 7913 hci_event[20] = 0; // master clock accuracy 7914 hci_emit_event(hci_event, sizeof(hci_event), 1); 7915 // emit GAP event, too 7916 uint8_t gap_event[36]; 7917 hci_create_gap_connection_complete_event(hci_event, gap_event); 7918 hci_emit_event(gap_event, sizeof(gap_event), 1); 7919 } 7920 #endif 7921 #endif 7922 7923 static void hci_emit_transport_packet_sent(void){ 7924 // notify upper stack that it might be possible to send again 7925 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7926 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7927 } 7928 7929 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7930 uint8_t event[6]; 7931 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7932 event[1] = sizeof(event) - 2u; 7933 event[2] = 0; // status = OK 7934 little_endian_store_16(event, 3, con_handle); 7935 event[5] = reason; 7936 hci_emit_event(event, sizeof(event), 1); 7937 } 7938 7939 static void hci_emit_nr_connections_changed(void){ 7940 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7941 uint8_t event[3]; 7942 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7943 event[1] = sizeof(event) - 2u; 7944 event[2] = nr_hci_connections(); 7945 hci_emit_event(event, sizeof(event), 1); 7946 } 7947 7948 static void hci_emit_hci_open_failed(void){ 7949 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7950 uint8_t event[2]; 7951 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7952 event[1] = sizeof(event) - 2u; 7953 hci_emit_event(event, sizeof(event), 1); 7954 } 7955 7956 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7957 log_info("hci_emit_dedicated_bonding_result %u ", status); 7958 uint8_t event[9]; 7959 int pos = 0; 7960 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7961 event[pos++] = sizeof(event) - 2u; 7962 event[pos++] = status; 7963 reverse_bd_addr(address, &event[pos]); 7964 hci_emit_event(event, sizeof(event), 1); 7965 } 7966 7967 7968 #ifdef ENABLE_CLASSIC 7969 7970 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7971 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7972 uint8_t event[5]; 7973 int pos = 0; 7974 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7975 event[pos++] = sizeof(event) - 2; 7976 little_endian_store_16(event, 2, con_handle); 7977 pos += 2; 7978 event[pos++] = level; 7979 hci_emit_event(event, sizeof(event), 1); 7980 } 7981 7982 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7983 if (!connection) return LEVEL_0; 7984 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7985 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7986 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7987 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7988 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7989 // LEVEL 4 always requires 128 bit encrytion key size 7990 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7991 security_level = LEVEL_3; 7992 } 7993 return security_level; 7994 } 7995 7996 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7997 uint8_t event[4]; 7998 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7999 event[1] = sizeof(event) - 2; 8000 event[2] = discoverable; 8001 event[3] = connectable; 8002 hci_emit_event(event, sizeof(event), 1); 8003 } 8004 8005 // query if remote side supports eSCO 8006 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8007 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8008 if (!connection) return false; 8009 return (connection->remote_supported_features[0] & 1) != 0; 8010 } 8011 8012 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8013 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8014 if (!connection) return 0; 8015 return connection->remote_supported_sco_packets; 8016 } 8017 8018 static bool hci_ssp_supported(hci_connection_t * connection){ 8019 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8020 return (connection->bonding_flags & mask) == mask; 8021 } 8022 8023 // query if remote side supports SSP 8024 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8025 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8026 if (!connection) return false; 8027 return hci_ssp_supported(connection) ? 1 : 0; 8028 } 8029 8030 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8031 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8032 } 8033 8034 /** 8035 * Check if remote supported features query has completed 8036 */ 8037 bool hci_remote_features_available(hci_con_handle_t handle){ 8038 hci_connection_t * connection = hci_connection_for_handle(handle); 8039 if (!connection) return false; 8040 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8041 } 8042 8043 /** 8044 * Trigger remote supported features query 8045 */ 8046 8047 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8048 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8049 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8050 } 8051 } 8052 8053 void hci_remote_features_query(hci_con_handle_t con_handle){ 8054 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8055 if (!connection) return; 8056 hci_trigger_remote_features_for_connection(connection); 8057 hci_run(); 8058 } 8059 8060 // GAP API 8061 /** 8062 * @bbrief enable/disable bonding. default is enabled 8063 * @praram enabled 8064 */ 8065 void gap_set_bondable_mode(int enable){ 8066 hci_stack->bondable = enable ? 1 : 0; 8067 } 8068 /** 8069 * @brief Get bondable mode. 8070 * @return 1 if bondable 8071 */ 8072 int gap_get_bondable_mode(void){ 8073 return hci_stack->bondable; 8074 } 8075 8076 /** 8077 * @brief map link keys to security levels 8078 */ 8079 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8080 switch (link_key_type){ 8081 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8082 return LEVEL_4; 8083 case COMBINATION_KEY: 8084 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8085 return LEVEL_3; 8086 default: 8087 return LEVEL_2; 8088 } 8089 } 8090 8091 /** 8092 * @brief map link keys to secure connection yes/no 8093 */ 8094 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8095 switch (link_key_type){ 8096 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8097 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8098 return true; 8099 default: 8100 return false; 8101 } 8102 } 8103 8104 /** 8105 * @brief map link keys to authenticated 8106 */ 8107 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8108 switch (link_key_type){ 8109 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8110 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8111 return true; 8112 default: 8113 return false; 8114 } 8115 } 8116 8117 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8118 log_info("gap_mitm_protection_required_for_security_level %u", level); 8119 return level > LEVEL_2; 8120 } 8121 8122 /** 8123 * @brief get current security level 8124 */ 8125 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8126 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8127 if (!connection) return LEVEL_0; 8128 return gap_security_level_for_connection(connection); 8129 } 8130 8131 /** 8132 * @brief request connection to device to 8133 * @result GAP_AUTHENTICATION_RESULT 8134 */ 8135 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8136 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8137 if (!connection){ 8138 hci_emit_security_level(con_handle, LEVEL_0); 8139 return; 8140 } 8141 8142 btstack_assert(hci_is_le_connection(connection) == false); 8143 8144 // 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) 8145 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8146 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8147 requested_level = LEVEL_4; 8148 } 8149 8150 gap_security_level_t current_level = gap_security_level(con_handle); 8151 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8152 requested_level, connection->requested_security_level, current_level); 8153 8154 // authentication active if authentication request was sent or planned level > 0 8155 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8156 if (authentication_active){ 8157 // authentication already active 8158 if (connection->requested_security_level < requested_level){ 8159 // increase requested level as new level is higher 8160 // TODO: handle re-authentication when done 8161 connection->requested_security_level = requested_level; 8162 } 8163 } else { 8164 // no request active, notify if security sufficient 8165 if (requested_level <= current_level){ 8166 hci_emit_security_level(con_handle, current_level); 8167 return; 8168 } 8169 8170 // store request 8171 connection->requested_security_level = requested_level; 8172 8173 // start to authenticate connection 8174 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8175 8176 // request remote features if not already active, also trigger hci_run 8177 hci_remote_features_query(con_handle); 8178 } 8179 } 8180 8181 /** 8182 * @brief start dedicated bonding with device. disconnect after bonding 8183 * @param device 8184 * @param request MITM protection 8185 * @result GAP_DEDICATED_BONDING_COMPLETE 8186 */ 8187 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8188 8189 // create connection state machine 8190 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8191 8192 if (!connection){ 8193 return BTSTACK_MEMORY_ALLOC_FAILED; 8194 } 8195 8196 // delete link key 8197 gap_drop_link_key_for_bd_addr(device); 8198 8199 // configure LEVEL_2/3, dedicated bonding 8200 connection->state = SEND_CREATE_CONNECTION; 8201 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8202 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8203 connection->bonding_flags = BONDING_DEDICATED; 8204 8205 hci_run(); 8206 8207 return 0; 8208 } 8209 8210 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8211 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8212 if (connection == NULL){ 8213 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8214 } 8215 if (defer){ 8216 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8217 } else { 8218 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8219 // trigger disconnect 8220 hci_run(); 8221 } 8222 return ERROR_CODE_SUCCESS; 8223 } 8224 8225 void gap_set_local_name(const char * local_name){ 8226 hci_stack->local_name = local_name; 8227 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8228 // also update EIR if not set by user 8229 if (hci_stack->eir_data == NULL){ 8230 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8231 } 8232 hci_run(); 8233 } 8234 #endif 8235 8236 8237 #ifdef ENABLE_BLE 8238 8239 #ifdef ENABLE_LE_CENTRAL 8240 void gap_start_scan(void){ 8241 hci_stack->le_scanning_enabled = true; 8242 hci_run(); 8243 } 8244 8245 void gap_stop_scan(void){ 8246 hci_stack->le_scanning_enabled = false; 8247 hci_run(); 8248 } 8249 8250 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8251 hci_stack->le_scan_type = scan_type; 8252 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8253 hci_stack->le_scan_interval = scan_interval; 8254 hci_stack->le_scan_window = scan_window; 8255 hci_stack->le_scanning_param_update = true; 8256 hci_run(); 8257 } 8258 8259 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8260 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8261 } 8262 8263 void gap_set_scan_duplicate_filter(bool enabled){ 8264 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8265 } 8266 8267 void gap_set_scan_phys(uint8_t phys){ 8268 // LE Coded and LE 1M PHY 8269 hci_stack->le_scan_phys = phys & 0x05; 8270 } 8271 8272 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8273 // disallow le connection if outgoing already active 8274 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8275 log_error("le connect already active"); 8276 return ERROR_CODE_COMMAND_DISALLOWED; 8277 } 8278 8279 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8280 if (conn == NULL) { 8281 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8282 if (conn == false){ 8283 // alloc failed 8284 log_info("gap_connect: failed to alloc hci_connection_t"); 8285 return BTSTACK_MEMORY_ALLOC_FAILED; 8286 } 8287 } else { 8288 switch (conn->state) { 8289 case RECEIVED_DISCONNECTION_COMPLETE: 8290 // connection was just disconnected, reset state and allow re-connect 8291 conn->role = HCI_ROLE_MASTER; 8292 break; 8293 default: 8294 return ERROR_CODE_COMMAND_DISALLOWED; 8295 } 8296 } 8297 8298 // set le connecting state 8299 if (hci_is_le_connection_type(addr_type)){ 8300 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8301 } 8302 8303 // trigger connect 8304 log_info("gap_connect: send create connection next"); 8305 conn->state = SEND_CREATE_CONNECTION; 8306 hci_run(); 8307 return ERROR_CODE_SUCCESS; 8308 } 8309 8310 // @assumption: only a single outgoing LE Connection exists 8311 static hci_connection_t * gap_get_outgoing_connection(void){ 8312 btstack_linked_item_t *it; 8313 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8314 hci_connection_t * conn = (hci_connection_t *) it; 8315 if (!hci_is_le_connection(conn)) continue; 8316 switch (conn->state){ 8317 case SEND_CREATE_CONNECTION: 8318 case SENT_CREATE_CONNECTION: 8319 return conn; 8320 default: 8321 break; 8322 }; 8323 } 8324 return NULL; 8325 } 8326 8327 uint8_t gap_connect_cancel(void){ 8328 hci_connection_t * conn; 8329 switch (hci_stack->le_connecting_request){ 8330 case LE_CONNECTING_IDLE: 8331 break; 8332 case LE_CONNECTING_WHITELIST: 8333 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8334 hci_run(); 8335 break; 8336 case LE_CONNECTING_DIRECT: 8337 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8338 conn = gap_get_outgoing_connection(); 8339 if (conn == NULL){ 8340 hci_run(); 8341 } else { 8342 switch (conn->state){ 8343 case SEND_CREATE_CONNECTION: 8344 // skip sending create connection and emit event instead 8345 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8346 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8347 btstack_memory_hci_connection_free( conn ); 8348 break; 8349 case SENT_CREATE_CONNECTION: 8350 // let hci_run_general_gap_le cancel outgoing connection 8351 hci_run(); 8352 break; 8353 default: 8354 break; 8355 } 8356 } 8357 break; 8358 default: 8359 btstack_unreachable(); 8360 break; 8361 } 8362 return ERROR_CODE_SUCCESS; 8363 } 8364 8365 /** 8366 * @brief Set connection parameters for outgoing connections 8367 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8368 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8369 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8370 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8371 * @param conn_latency, default: 4 8372 * @param supervision_timeout (unit: 10ms), default: 720 ms 8373 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8374 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8375 */ 8376 8377 void gap_set_connection_phys(uint8_t phys){ 8378 // LE Coded, LE 1M, LE 2M PHY 8379 hci_stack->le_connection_phys = phys & 7; 8380 } 8381 8382 #endif 8383 8384 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8385 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8386 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8387 hci_stack->le_connection_scan_interval = conn_scan_interval; 8388 hci_stack->le_connection_scan_window = conn_scan_window; 8389 hci_stack->le_connection_interval_min = conn_interval_min; 8390 hci_stack->le_connection_interval_max = conn_interval_max; 8391 hci_stack->le_connection_latency = conn_latency; 8392 hci_stack->le_supervision_timeout = supervision_timeout; 8393 hci_stack->le_minimum_ce_length = min_ce_length; 8394 hci_stack->le_maximum_ce_length = max_ce_length; 8395 } 8396 8397 /** 8398 * @brief Updates the connection parameters for a given LE connection 8399 * @param handle 8400 * @param conn_interval_min (unit: 1.25ms) 8401 * @param conn_interval_max (unit: 1.25ms) 8402 * @param conn_latency 8403 * @param supervision_timeout (unit: 10ms) 8404 * @return 0 if ok 8405 */ 8406 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8407 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8408 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8409 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8410 connection->le_conn_interval_min = conn_interval_min; 8411 connection->le_conn_interval_max = conn_interval_max; 8412 connection->le_conn_latency = conn_latency; 8413 connection->le_supervision_timeout = supervision_timeout; 8414 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8415 hci_run(); 8416 return 0; 8417 } 8418 8419 /** 8420 * @brief Request an update of the connection parameter for a given LE connection 8421 * @param handle 8422 * @param conn_interval_min (unit: 1.25ms) 8423 * @param conn_interval_max (unit: 1.25ms) 8424 * @param conn_latency 8425 * @param supervision_timeout (unit: 10ms) 8426 * @return 0 if ok 8427 */ 8428 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8429 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8430 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8431 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8432 connection->le_conn_interval_min = conn_interval_min; 8433 connection->le_conn_interval_max = conn_interval_max; 8434 connection->le_conn_latency = conn_latency; 8435 connection->le_supervision_timeout = supervision_timeout; 8436 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8437 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8438 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8439 return 0; 8440 } 8441 8442 #ifdef ENABLE_LE_PERIPHERAL 8443 8444 /** 8445 * @brief Set Advertisement Data 8446 * @param advertising_data_length 8447 * @param advertising_data (max 31 octets) 8448 * @note data is not copied, pointer has to stay valid 8449 */ 8450 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8451 hci_stack->le_advertisements_data_len = advertising_data_length; 8452 hci_stack->le_advertisements_data = advertising_data; 8453 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8454 hci_run(); 8455 } 8456 8457 /** 8458 * @brief Set Scan Response Data 8459 * @param advertising_data_length 8460 * @param advertising_data (max 31 octets) 8461 * @note data is not copied, pointer has to stay valid 8462 */ 8463 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8464 hci_stack->le_scan_response_data_len = scan_response_data_length; 8465 hci_stack->le_scan_response_data = scan_response_data; 8466 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8467 hci_run(); 8468 } 8469 8470 /** 8471 * @brief Set Advertisement Parameters 8472 * @param adv_int_min 8473 * @param adv_int_max 8474 * @param adv_type 8475 * @param direct_address_type 8476 * @param direct_address 8477 * @param channel_map 8478 * @param filter_policy 8479 * 8480 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8481 */ 8482 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8483 uint8_t direct_address_typ, bd_addr_t direct_address, 8484 uint8_t channel_map, uint8_t filter_policy) { 8485 8486 hci_stack->le_advertisements_interval_min = adv_int_min; 8487 hci_stack->le_advertisements_interval_max = adv_int_max; 8488 hci_stack->le_advertisements_type = adv_type; 8489 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8490 hci_stack->le_advertisements_channel_map = channel_map; 8491 hci_stack->le_advertisements_filter_policy = filter_policy; 8492 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8493 6); 8494 8495 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8496 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8497 hci_run(); 8498 } 8499 8500 /** 8501 * @brief Enable/Disable Advertisements 8502 * @param enabled 8503 */ 8504 void gap_advertisements_enable(int enabled){ 8505 if (enabled == 0){ 8506 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8507 } else { 8508 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8509 } 8510 hci_update_advertisements_enabled_for_current_roles(); 8511 hci_run(); 8512 } 8513 8514 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8515 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8516 btstack_linked_list_iterator_t it; 8517 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8518 while (btstack_linked_list_iterator_has_next(&it)){ 8519 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8520 if ( item->advertising_handle == advertising_handle ) { 8521 return item; 8522 } 8523 } 8524 return NULL; 8525 } 8526 8527 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8528 hci_stack->le_resolvable_private_address_update_s = update_s; 8529 hci_run(); 8530 return ERROR_CODE_SUCCESS; 8531 } 8532 8533 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8534 // find free advertisement handle 8535 uint8_t advertisement_handle; 8536 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8537 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8538 } 8539 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8540 // clear 8541 memset(storage, 0, sizeof(le_advertising_set_t)); 8542 // copy params 8543 storage->advertising_handle = advertisement_handle; 8544 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8545 // add to list 8546 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8547 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8548 *out_advertising_handle = advertisement_handle; 8549 // set tasks and start 8550 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8551 hci_run(); 8552 return ERROR_CODE_SUCCESS; 8553 } 8554 8555 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8556 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8557 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8558 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8559 // set tasks and start 8560 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8561 hci_run(); 8562 return ERROR_CODE_SUCCESS; 8563 } 8564 8565 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8566 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8567 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8568 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8569 return ERROR_CODE_SUCCESS; 8570 } 8571 8572 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8573 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8574 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8575 memcpy(advertising_set->random_address, random_address, 6); 8576 // set tasks and start 8577 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8578 hci_run(); 8579 return ERROR_CODE_SUCCESS; 8580 } 8581 8582 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8583 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8584 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8585 advertising_set->adv_data = advertising_data; 8586 advertising_set->adv_data_len = advertising_data_length; 8587 // set tasks and start 8588 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8589 hci_run(); 8590 return ERROR_CODE_SUCCESS; 8591 } 8592 8593 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){ 8594 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8595 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8596 advertising_set->scan_data = scan_response_data; 8597 advertising_set->scan_data_len = scan_response_data_length; 8598 // set tasks and start 8599 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8600 hci_run(); 8601 return ERROR_CODE_SUCCESS; 8602 } 8603 8604 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8605 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8606 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8607 advertising_set->enable_timeout = timeout; 8608 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8609 // set tasks and start 8610 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8611 hci_run(); 8612 return ERROR_CODE_SUCCESS; 8613 } 8614 8615 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8616 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8617 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8618 // set tasks and start 8619 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8620 hci_run(); 8621 return ERROR_CODE_SUCCESS; 8622 } 8623 8624 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8625 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8626 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8627 // set tasks and start 8628 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8629 hci_run(); 8630 return ERROR_CODE_SUCCESS; 8631 } 8632 8633 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8634 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8635 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8636 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8637 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8638 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8639 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8640 // set tasks and start 8641 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8642 hci_run(); 8643 return ERROR_CODE_SUCCESS; 8644 } 8645 8646 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8647 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8648 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8649 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8650 return ERROR_CODE_SUCCESS; 8651 } 8652 8653 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8654 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8655 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8656 advertising_set->periodic_data = periodic_data; 8657 advertising_set->periodic_data_len = periodic_data_length; 8658 // set tasks and start 8659 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8660 hci_run(); 8661 return ERROR_CODE_SUCCESS; 8662 } 8663 8664 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8665 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8666 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8667 // set tasks and start 8668 advertising_set->periodic_include_adi = include_adi; 8669 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8670 hci_run(); 8671 return ERROR_CODE_SUCCESS; 8672 } 8673 8674 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8675 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8676 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8677 // set tasks and start 8678 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8679 hci_run(); 8680 return ERROR_CODE_SUCCESS; 8681 } 8682 8683 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8684 hci_stack->le_past_mode = mode; 8685 hci_stack->le_past_skip = skip; 8686 hci_stack->le_past_sync_timeout = sync_timeout; 8687 hci_stack->le_past_cte_type = cte_type; 8688 hci_stack->le_past_set_default_params = true; 8689 hci_run(); 8690 return ERROR_CODE_SUCCESS; 8691 } 8692 8693 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8694 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8695 if (hci_connection == NULL){ 8696 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8697 } 8698 hci_connection->le_past_sync_handle = sync_handle; 8699 hci_connection->le_past_service_data = service_data; 8700 hci_run(); 8701 return ERROR_CODE_SUCCESS; 8702 } 8703 8704 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8705 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8706 if (hci_connection == NULL){ 8707 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8708 } 8709 hci_connection->le_past_advertising_handle = advertising_handle; 8710 hci_connection->le_past_service_data = service_data; 8711 hci_run(); 8712 return ERROR_CODE_SUCCESS; 8713 } 8714 8715 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8716 8717 #endif 8718 8719 #endif 8720 8721 void hci_le_set_own_address_type(uint8_t own_address_type){ 8722 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8723 if (own_address_type == hci_stack->le_own_addr_type) return; 8724 hci_stack->le_own_addr_type = own_address_type; 8725 8726 #ifdef ENABLE_LE_PERIPHERAL 8727 // update advertisement parameters, too 8728 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8729 hci_run(); 8730 #endif 8731 #ifdef ENABLE_LE_CENTRAL 8732 // note: we don't update scan parameters or modify ongoing connection attempts 8733 #endif 8734 } 8735 8736 void hci_le_random_address_set(const bd_addr_t random_address){ 8737 memcpy(hci_stack->le_random_address, random_address, 6); 8738 hci_stack->le_random_address_set = true; 8739 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8740 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8741 if (hci_extended_advertising_supported()){ 8742 // force advertising set creation for LE Set Advertising Set Random Address 8743 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8744 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8745 } 8746 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8747 } 8748 #endif 8749 hci_run(); 8750 } 8751 8752 #endif 8753 8754 uint8_t gap_disconnect(hci_con_handle_t handle){ 8755 hci_connection_t * conn = hci_connection_for_handle(handle); 8756 if (!conn){ 8757 hci_emit_disconnection_complete(handle, 0); 8758 return 0; 8759 } 8760 // ignore if already disconnected 8761 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8762 return 0; 8763 } 8764 conn->state = SEND_DISCONNECT; 8765 hci_run(); 8766 return 0; 8767 } 8768 8769 int gap_read_rssi(hci_con_handle_t con_handle){ 8770 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8771 if (hci_connection == NULL) return 0; 8772 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8773 hci_run(); 8774 return 1; 8775 } 8776 8777 /** 8778 * @brief Get connection type 8779 * @param con_handle 8780 * @result connection_type 8781 */ 8782 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8783 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8784 if (!conn) return GAP_CONNECTION_INVALID; 8785 switch (conn->address_type){ 8786 case BD_ADDR_TYPE_LE_PUBLIC: 8787 case BD_ADDR_TYPE_LE_RANDOM: 8788 return GAP_CONNECTION_LE; 8789 case BD_ADDR_TYPE_SCO: 8790 return GAP_CONNECTION_SCO; 8791 case BD_ADDR_TYPE_ACL: 8792 return GAP_CONNECTION_ACL; 8793 default: 8794 return GAP_CONNECTION_INVALID; 8795 } 8796 } 8797 8798 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8799 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8800 if (!conn) return HCI_ROLE_INVALID; 8801 return (hci_role_t) conn->role; 8802 } 8803 8804 8805 #ifdef ENABLE_CLASSIC 8806 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8807 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8808 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8809 conn->request_role = role; 8810 hci_run(); 8811 return ERROR_CODE_SUCCESS; 8812 } 8813 #endif 8814 8815 #ifdef ENABLE_BLE 8816 8817 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){ 8818 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8819 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8820 8821 conn->le_phy_update_all_phys = all_phys; 8822 conn->le_phy_update_tx_phys = tx_phys; 8823 conn->le_phy_update_rx_phys = rx_phys; 8824 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8825 8826 hci_run(); 8827 8828 return 0; 8829 } 8830 8831 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8832 8833 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 8834 // incorrect configuration: 8835 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 8836 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 8837 btstack_assert(false); 8838 #endif 8839 8840 // check if already in list 8841 btstack_linked_list_iterator_t it; 8842 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8843 while (btstack_linked_list_iterator_has_next(&it)) { 8844 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8845 if (entry->address_type != address_type) { 8846 continue; 8847 } 8848 if (memcmp(entry->address, address, 6) != 0) { 8849 continue; 8850 } 8851 8852 // if already on controller: 8853 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8854 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8855 // drop remove request 8856 entry->state = LE_WHITELIST_ON_CONTROLLER; 8857 return ERROR_CODE_SUCCESS; 8858 } else { 8859 // disallow as already on controller 8860 return ERROR_CODE_COMMAND_DISALLOWED; 8861 } 8862 } 8863 8864 // assume scheduled to add 8865 return ERROR_CODE_COMMAND_DISALLOWED; 8866 } 8867 8868 // alloc and add to list 8869 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8870 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8871 entry->address_type = address_type; 8872 (void)memcpy(entry->address, address, 6); 8873 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8874 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8875 return ERROR_CODE_SUCCESS; 8876 } 8877 8878 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8879 btstack_linked_list_iterator_t it; 8880 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8881 while (btstack_linked_list_iterator_has_next(&it)){ 8882 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8883 if (entry->address_type != address_type) { 8884 continue; 8885 } 8886 if (memcmp(entry->address, address, 6) != 0) { 8887 continue; 8888 } 8889 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8890 // remove from controller if already present 8891 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8892 } else { 8893 // directly remove entry from whitelist 8894 btstack_linked_list_iterator_remove(&it); 8895 btstack_memory_whitelist_entry_free(entry); 8896 } 8897 return ERROR_CODE_SUCCESS; 8898 } 8899 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8900 } 8901 8902 static void hci_whitelist_clear(void){ 8903 btstack_linked_list_iterator_t it; 8904 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8905 while (btstack_linked_list_iterator_has_next(&it)){ 8906 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8907 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8908 // remove from controller if already present 8909 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8910 continue; 8911 } 8912 // directly remove entry from whitelist 8913 btstack_linked_list_iterator_remove(&it); 8914 btstack_memory_whitelist_entry_free(entry); 8915 } 8916 } 8917 8918 /** 8919 * @brief Clear Whitelist 8920 * @return 0 if ok 8921 */ 8922 uint8_t gap_whitelist_clear(void){ 8923 hci_whitelist_clear(); 8924 hci_run(); 8925 return ERROR_CODE_SUCCESS; 8926 } 8927 8928 /** 8929 * @brief Add Device to Whitelist 8930 * @param address_typ 8931 * @param address 8932 * @return 0 if ok 8933 */ 8934 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8935 uint8_t status = hci_whitelist_add(address_type, address); 8936 if (status){ 8937 return status; 8938 } 8939 hci_run(); 8940 return ERROR_CODE_SUCCESS; 8941 } 8942 8943 /** 8944 * @brief Remove Device from Whitelist 8945 * @param address_typ 8946 * @param address 8947 * @return 0 if ok 8948 */ 8949 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8950 uint8_t status = hci_whitelist_remove(address_type, address); 8951 if (status){ 8952 return status; 8953 } 8954 hci_run(); 8955 return ERROR_CODE_SUCCESS; 8956 } 8957 8958 #ifdef ENABLE_LE_CENTRAL 8959 /** 8960 * @brief Connect with Whitelist 8961 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8962 * @return - if ok 8963 */ 8964 uint8_t gap_connect_with_whitelist(void){ 8965 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8966 return ERROR_CODE_COMMAND_DISALLOWED; 8967 } 8968 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8969 hci_run(); 8970 return ERROR_CODE_SUCCESS; 8971 } 8972 8973 /** 8974 * @brief Auto Connection Establishment - Start Connecting to device 8975 * @param address_typ 8976 * @param address 8977 * @return 0 if ok 8978 */ 8979 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8980 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8981 return ERROR_CODE_COMMAND_DISALLOWED; 8982 } 8983 8984 uint8_t status = hci_whitelist_add(address_type, address); 8985 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8986 return status; 8987 } 8988 8989 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8990 8991 hci_run(); 8992 return ERROR_CODE_SUCCESS; 8993 } 8994 8995 /** 8996 * @brief Auto Connection Establishment - Stop Connecting to device 8997 * @param address_typ 8998 * @param address 8999 * @return 0 if ok 9000 */ 9001 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9002 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9003 return ERROR_CODE_COMMAND_DISALLOWED; 9004 } 9005 9006 hci_whitelist_remove(address_type, address); 9007 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9008 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9009 } 9010 hci_run(); 9011 return 0; 9012 } 9013 9014 /** 9015 * @brief Auto Connection Establishment - Stop everything 9016 * @note Convenience function to stop all active auto connection attempts 9017 */ 9018 uint8_t gap_auto_connection_stop_all(void){ 9019 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9020 return ERROR_CODE_COMMAND_DISALLOWED; 9021 } 9022 hci_whitelist_clear(); 9023 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9024 hci_run(); 9025 return ERROR_CODE_SUCCESS; 9026 } 9027 9028 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9029 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9030 if (!conn) return 0; 9031 return conn->le_connection_interval; 9032 } 9033 #endif 9034 #endif 9035 9036 #ifdef ENABLE_CLASSIC 9037 /** 9038 * @brief Set Extended Inquiry Response data 9039 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9040 * @note has to be done before stack starts up 9041 */ 9042 void gap_set_extended_inquiry_response(const uint8_t * data){ 9043 hci_stack->eir_data = data; 9044 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9045 hci_run(); 9046 } 9047 9048 /** 9049 * @brief Start GAP Classic Inquiry 9050 * @param duration in 1.28s units 9051 * @return 0 if ok 9052 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9053 */ 9054 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9055 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9056 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9057 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9058 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9059 } 9060 hci_stack->inquiry_state = duration_in_1280ms_units; 9061 hci_stack->inquiry_max_period_length = 0; 9062 hci_stack->inquiry_min_period_length = 0; 9063 hci_run(); 9064 return 0; 9065 } 9066 9067 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9068 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9069 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9070 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9071 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9072 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9073 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9074 9075 hci_stack->inquiry_state = duration; 9076 hci_stack->inquiry_max_period_length = max_period_length; 9077 hci_stack->inquiry_min_period_length = min_period_length; 9078 hci_run(); 9079 return 0; 9080 } 9081 9082 /** 9083 * @brief Stop GAP Classic Inquiry 9084 * @return 0 if ok 9085 */ 9086 int gap_inquiry_stop(void){ 9087 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9088 // emit inquiry complete event, before it even started 9089 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9090 hci_emit_event(event, sizeof(event), 1); 9091 return 0; 9092 } 9093 switch (hci_stack->inquiry_state){ 9094 case GAP_INQUIRY_STATE_ACTIVE: 9095 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9096 hci_run(); 9097 return ERROR_CODE_SUCCESS; 9098 case GAP_INQUIRY_STATE_PERIODIC: 9099 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9100 hci_run(); 9101 return ERROR_CODE_SUCCESS; 9102 default: 9103 return ERROR_CODE_COMMAND_DISALLOWED; 9104 } 9105 } 9106 9107 void gap_inquiry_set_lap(uint32_t lap){ 9108 hci_stack->inquiry_lap = lap; 9109 } 9110 9111 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9112 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9113 hci_stack->inquiry_scan_window = inquiry_scan_window; 9114 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9115 hci_run(); 9116 } 9117 9118 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9119 { 9120 hci_stack->inquiry_tx_power_level = tx_power; 9121 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9122 hci_run(); 9123 } 9124 9125 9126 /** 9127 * @brief Remote Name Request 9128 * @param addr 9129 * @param page_scan_repetition_mode 9130 * @param clock_offset only used when bit 15 is set 9131 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9132 */ 9133 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9134 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9135 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9136 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9137 hci_stack->remote_name_clock_offset = clock_offset; 9138 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9139 hci_run(); 9140 return 0; 9141 } 9142 9143 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9144 hci_stack->gap_pairing_state = state; 9145 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9146 hci_run(); 9147 return 0; 9148 } 9149 9150 /** 9151 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9152 * @param addr 9153 * @param pin_data 9154 * @param pin_len 9155 * @return 0 if ok 9156 */ 9157 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9158 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9159 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9160 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9161 hci_stack->gap_pairing_pin_len = pin_len; 9162 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9163 } 9164 9165 /** 9166 * @brief Legacy Pairing Pin Code Response 9167 * @param addr 9168 * @param pin 9169 * @return 0 if ok 9170 */ 9171 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9172 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9173 } 9174 9175 /** 9176 * @brief Abort Legacy Pairing 9177 * @param addr 9178 * @param pin 9179 * @return 0 if ok 9180 */ 9181 int gap_pin_code_negative(bd_addr_t addr){ 9182 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9183 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9184 } 9185 9186 /** 9187 * @brief SSP Passkey Response 9188 * @param addr 9189 * @param passkey 9190 * @return 0 if ok 9191 */ 9192 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9193 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9194 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9195 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9196 } 9197 9198 /** 9199 * @brief Abort SSP Passkey Entry/Pairing 9200 * @param addr 9201 * @param pin 9202 * @return 0 if ok 9203 */ 9204 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9205 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9206 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9207 } 9208 9209 /** 9210 * @brief Accept SSP Numeric Comparison 9211 * @param addr 9212 * @param passkey 9213 * @return 0 if ok 9214 */ 9215 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9216 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9217 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9218 } 9219 9220 /** 9221 * @brief Abort SSP Numeric Comparison/Pairing 9222 * @param addr 9223 * @param pin 9224 * @return 0 if ok 9225 */ 9226 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9227 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9228 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9229 } 9230 9231 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9232 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9233 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9234 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9235 connectionSetAuthenticationFlags(conn, flag); 9236 hci_run(); 9237 return ERROR_CODE_SUCCESS; 9238 } 9239 #endif 9240 9241 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9242 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9243 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9244 } 9245 9246 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9247 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9248 } 9249 #endif 9250 9251 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9252 /** 9253 * @brief Report Remote OOB Data 9254 * @param bd_addr 9255 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9256 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9257 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9258 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9259 */ 9260 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){ 9261 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9262 if (connection == NULL) { 9263 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9264 } 9265 connection->classic_oob_c_192 = c_192; 9266 connection->classic_oob_r_192 = r_192; 9267 9268 // ignore P-256 if not supported by us 9269 if (hci_stack->secure_connections_active){ 9270 connection->classic_oob_c_256 = c_256; 9271 connection->classic_oob_r_256 = r_256; 9272 } 9273 9274 return ERROR_CODE_SUCCESS; 9275 } 9276 /** 9277 * @brief Generate new OOB data 9278 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9279 */ 9280 void gap_ssp_generate_oob_data(void){ 9281 hci_stack->classic_read_local_oob_data = true; 9282 hci_run(); 9283 } 9284 9285 #endif 9286 9287 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9288 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9289 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9290 if (connection == NULL) { 9291 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9292 } 9293 9294 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9295 connection->link_key_type = type; 9296 9297 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9298 } 9299 9300 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9301 /** 9302 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9303 * @param inquiry_mode see bluetooth_defines.h 9304 */ 9305 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9306 hci_stack->inquiry_mode = inquiry_mode; 9307 } 9308 9309 /** 9310 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9311 */ 9312 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9313 hci_stack->sco_voice_setting = voice_setting; 9314 } 9315 9316 /** 9317 * @brief Get SCO Voice Setting 9318 * @return current voice setting 9319 */ 9320 uint16_t hci_get_sco_voice_setting(void){ 9321 return hci_stack->sco_voice_setting; 9322 } 9323 9324 static int hci_have_usb_transport(void){ 9325 if (!hci_stack->hci_transport) return 0; 9326 const char * transport_name = hci_stack->hci_transport->name; 9327 if (!transport_name) return 0; 9328 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9329 } 9330 9331 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9332 uint16_t sco_packet_length = 0; 9333 9334 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9335 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9336 int multiplier; 9337 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9338 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9339 multiplier = 2; 9340 } else { 9341 multiplier = 1; 9342 } 9343 #endif 9344 9345 #ifdef ENABLE_SCO_OVER_HCI 9346 if (hci_have_usb_transport()){ 9347 // see Core Spec for H2 USB Transfer. 9348 // 3 byte SCO header + 24 bytes per connection 9349 // @note multiple sco connections not supported currently 9350 sco_packet_length = 3 + 24 * multiplier; 9351 } else { 9352 // 3 byte SCO header + SCO packet length over the air 9353 sco_packet_length = 3 + payload_size * multiplier; 9354 // assert that it still fits inside an SCO buffer 9355 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9356 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9357 } 9358 } 9359 #endif 9360 #ifdef HAVE_SCO_TRANSPORT 9361 // 3 byte SCO header + SCO packet length over the air 9362 sco_packet_length = 3 + payload_size * multiplier; 9363 // assert that it still fits inside an SCO buffer 9364 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9365 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9366 } 9367 #endif 9368 return sco_packet_length; 9369 } 9370 9371 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9372 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9373 if (connection != NULL){ 9374 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9375 } 9376 return 0; 9377 } 9378 9379 uint16_t hci_get_sco_packet_length(void){ 9380 btstack_linked_list_iterator_t it; 9381 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9382 while (btstack_linked_list_iterator_has_next(&it)){ 9383 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9384 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9385 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9386 } 9387 } 9388 return 0; 9389 } 9390 9391 /** 9392 * @brief Sets the master/slave policy 9393 * @param policy (0: attempt to become master, 1: let connecting device decide) 9394 */ 9395 void hci_set_master_slave_policy(uint8_t policy){ 9396 hci_stack->master_slave_policy = policy; 9397 } 9398 9399 #endif 9400 9401 HCI_STATE hci_get_state(void){ 9402 return hci_stack->state; 9403 } 9404 9405 #ifdef ENABLE_CLASSIC 9406 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9407 hci_stack->gap_classic_accept_callback = accept_callback; 9408 } 9409 #endif 9410 9411 /** 9412 * @brief Set callback for Bluetooth Hardware Error 9413 */ 9414 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9415 hci_stack->hardware_error_callback = fn; 9416 } 9417 9418 void hci_disconnect_all(void){ 9419 btstack_linked_list_iterator_t it; 9420 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9421 while (btstack_linked_list_iterator_has_next(&it)){ 9422 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9423 if (con->state == SENT_DISCONNECT) continue; 9424 con->state = SEND_DISCONNECT; 9425 } 9426 hci_run(); 9427 } 9428 9429 uint16_t hci_get_manufacturer(void){ 9430 return hci_stack->manufacturer; 9431 } 9432 9433 #ifdef ENABLE_BLE 9434 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9435 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9436 if (!hci_con) return NULL; 9437 return &hci_con->sm_connection; 9438 } 9439 9440 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9441 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9442 #endif 9443 9444 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9445 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9446 if (hci_connection == NULL) return 0; 9447 if (hci_is_le_connection(hci_connection)){ 9448 #ifdef ENABLE_BLE 9449 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9450 if (sm_conn->sm_connection_encrypted) { 9451 return sm_conn->sm_actual_encryption_key_size; 9452 } 9453 #endif 9454 } else { 9455 #ifdef ENABLE_CLASSIC 9456 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9457 return hci_connection->encryption_key_size; 9458 } 9459 #endif 9460 } 9461 return 0; 9462 } 9463 9464 bool gap_authenticated(hci_con_handle_t con_handle){ 9465 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9466 if (hci_connection == NULL) return false; 9467 9468 switch (hci_connection->address_type){ 9469 #ifdef ENABLE_BLE 9470 case BD_ADDR_TYPE_LE_PUBLIC: 9471 case BD_ADDR_TYPE_LE_RANDOM: 9472 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9473 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9474 #endif 9475 #ifdef ENABLE_CLASSIC 9476 case BD_ADDR_TYPE_SCO: 9477 case BD_ADDR_TYPE_ACL: 9478 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9479 #endif 9480 default: 9481 return false; 9482 } 9483 } 9484 9485 bool gap_secure_connection(hci_con_handle_t con_handle){ 9486 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9487 if (hci_connection == NULL) return 0; 9488 9489 switch (hci_connection->address_type){ 9490 #ifdef ENABLE_BLE 9491 case BD_ADDR_TYPE_LE_PUBLIC: 9492 case BD_ADDR_TYPE_LE_RANDOM: 9493 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9494 return hci_connection->sm_connection.sm_connection_sc != 0; 9495 #endif 9496 #ifdef ENABLE_CLASSIC 9497 case BD_ADDR_TYPE_SCO: 9498 case BD_ADDR_TYPE_ACL: 9499 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9500 #endif 9501 default: 9502 return false; 9503 } 9504 } 9505 9506 bool gap_bonded(hci_con_handle_t con_handle){ 9507 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9508 if (hci_connection == NULL) return 0; 9509 9510 #ifdef ENABLE_CLASSIC 9511 link_key_t link_key; 9512 link_key_type_t link_key_type; 9513 #endif 9514 switch (hci_connection->address_type){ 9515 #ifdef ENABLE_BLE 9516 case BD_ADDR_TYPE_LE_PUBLIC: 9517 case BD_ADDR_TYPE_LE_RANDOM: 9518 return hci_connection->sm_connection.sm_le_db_index >= 0; 9519 #endif 9520 #ifdef ENABLE_CLASSIC 9521 case BD_ADDR_TYPE_SCO: 9522 case BD_ADDR_TYPE_ACL: 9523 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9524 #endif 9525 default: 9526 return false; 9527 } 9528 } 9529 9530 #ifdef ENABLE_BLE 9531 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9532 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9533 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9534 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9535 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9536 return sm_conn->sm_connection_authorization_state; 9537 } 9538 #endif 9539 9540 #ifdef ENABLE_CLASSIC 9541 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){ 9542 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9543 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9544 conn->sniff_min_interval = sniff_min_interval; 9545 conn->sniff_max_interval = sniff_max_interval; 9546 conn->sniff_attempt = sniff_attempt; 9547 conn->sniff_timeout = sniff_timeout; 9548 hci_run(); 9549 return 0; 9550 } 9551 9552 /** 9553 * @brief Exit Sniff mode 9554 * @param con_handle 9555 @ @return 0 if ok 9556 */ 9557 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9558 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9559 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9560 conn->sniff_min_interval = 0xffff; 9561 hci_run(); 9562 return 0; 9563 } 9564 9565 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){ 9566 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9567 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9568 conn->sniff_subrating_max_latency = max_latency; 9569 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9570 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9571 hci_run(); 9572 return ERROR_CODE_SUCCESS; 9573 } 9574 9575 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){ 9576 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9577 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9578 conn->qos_service_type = service_type; 9579 conn->qos_token_rate = token_rate; 9580 conn->qos_peak_bandwidth = peak_bandwidth; 9581 conn->qos_latency = latency; 9582 conn->qos_delay_variation = delay_variation; 9583 hci_run(); 9584 return ERROR_CODE_SUCCESS; 9585 } 9586 9587 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9588 hci_stack->new_page_scan_interval = page_scan_interval; 9589 hci_stack->new_page_scan_window = page_scan_window; 9590 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9591 hci_run(); 9592 } 9593 9594 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9595 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9596 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9597 hci_run(); 9598 } 9599 9600 void gap_set_page_timeout(uint16_t page_timeout){ 9601 hci_stack->page_timeout = page_timeout; 9602 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9603 hci_run(); 9604 } 9605 9606 #endif 9607 9608 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9609 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9610 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9611 if (le_device_db_index >= le_device_db_max_count()) return; 9612 uint8_t offset = le_device_db_index >> 3; 9613 uint8_t mask = 1 << (le_device_db_index & 7); 9614 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9615 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9616 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9617 // note: go back to remove entries, otherwise, a remove + add will skip the add 9618 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9619 } 9620 } 9621 9622 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9623 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9624 if (le_device_db_index >= le_device_db_max_count()) return; 9625 uint8_t offset = le_device_db_index >> 3; 9626 uint8_t mask = 1 << (le_device_db_index & 7); 9627 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9628 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9629 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9630 } 9631 } 9632 9633 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9634 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9635 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9636 } 9637 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9638 // restart le resolving list update 9639 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9640 } 9641 return ERROR_CODE_SUCCESS; 9642 } 9643 9644 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9645 hci_stack->le_privacy_mode = privacy_mode; 9646 } 9647 #endif 9648 9649 #ifdef ENABLE_BLE 9650 #ifdef ENABLE_LE_CENTRAL 9651 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9652 9653 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9654 9655 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9656 // incorrect configuration: 9657 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9658 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9659 btstack_assert(false); 9660 #endif 9661 9662 // check if already in list 9663 btstack_linked_list_iterator_t it; 9664 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9665 while (btstack_linked_list_iterator_has_next(&it)) { 9666 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9667 if (entry->sid != advertising_sid) { 9668 continue; 9669 } 9670 if (entry->address_type != address_type) { 9671 continue; 9672 } 9673 if (memcmp(entry->address, address, 6) != 0) { 9674 continue; 9675 } 9676 // disallow if already scheduled to add 9677 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9678 return ERROR_CODE_COMMAND_DISALLOWED; 9679 } 9680 // still on controller, but scheduled to remove -> re-add 9681 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9682 return ERROR_CODE_SUCCESS; 9683 } 9684 // alloc and add to list 9685 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9686 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9687 entry->sid = advertising_sid; 9688 entry->address_type = address_type; 9689 (void)memcpy(entry->address, address, 6); 9690 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9691 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9692 return ERROR_CODE_SUCCESS; 9693 } 9694 9695 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9696 btstack_linked_list_iterator_t it; 9697 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9698 while (btstack_linked_list_iterator_has_next(&it)){ 9699 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9700 if (entry->sid != advertising_sid) { 9701 continue; 9702 } 9703 if (entry->address_type != address_type) { 9704 continue; 9705 } 9706 if (memcmp(entry->address, address, 6) != 0) { 9707 continue; 9708 } 9709 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9710 // remove from controller if already present 9711 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9712 } else { 9713 // directly remove entry from whitelist 9714 btstack_linked_list_iterator_remove(&it); 9715 btstack_memory_periodic_advertiser_list_entry_free(entry); 9716 } 9717 return ERROR_CODE_SUCCESS; 9718 } 9719 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9720 } 9721 9722 static void hci_periodic_advertiser_list_clear(void){ 9723 btstack_linked_list_iterator_t it; 9724 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9725 while (btstack_linked_list_iterator_has_next(&it)){ 9726 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9727 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9728 // remove from controller if already present 9729 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9730 continue; 9731 } 9732 // directly remove entry from whitelist 9733 btstack_linked_list_iterator_remove(&it); 9734 btstack_memory_periodic_advertiser_list_entry_free(entry); 9735 } 9736 } 9737 9738 uint8_t gap_periodic_advertiser_list_clear(void){ 9739 hci_periodic_advertiser_list_clear(); 9740 hci_run(); 9741 return ERROR_CODE_SUCCESS; 9742 } 9743 9744 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9745 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9746 if (status){ 9747 return status; 9748 } 9749 hci_run(); 9750 return ERROR_CODE_SUCCESS; 9751 } 9752 9753 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9754 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9755 if (status){ 9756 return status; 9757 } 9758 hci_run(); 9759 return ERROR_CODE_SUCCESS; 9760 } 9761 9762 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9763 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9764 // abort if already active 9765 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9766 return ERROR_CODE_COMMAND_DISALLOWED; 9767 } 9768 // store request 9769 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9770 hci_stack->le_periodic_sync_options = options; 9771 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9772 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9773 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9774 hci_stack->le_periodic_sync_skip = skip; 9775 hci_stack->le_periodic_sync_timeout = sync_timeout; 9776 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9777 9778 hci_run(); 9779 return ERROR_CODE_SUCCESS; 9780 } 9781 9782 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9783 // abort if not requested 9784 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9785 return ERROR_CODE_COMMAND_DISALLOWED; 9786 } 9787 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9788 hci_run(); 9789 return ERROR_CODE_SUCCESS; 9790 } 9791 9792 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9793 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9794 return ERROR_CODE_COMMAND_DISALLOWED; 9795 } 9796 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9797 hci_run(); 9798 return ERROR_CODE_SUCCESS; 9799 } 9800 9801 #endif 9802 #endif 9803 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9804 static hci_iso_stream_t * 9805 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9806 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9807 if (iso_stream != NULL){ 9808 iso_stream->iso_type = iso_type; 9809 iso_stream->state = state; 9810 iso_stream->group_id = group_id; 9811 iso_stream->stream_id = stream_id; 9812 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9813 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9814 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9815 } 9816 return iso_stream; 9817 } 9818 9819 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9820 btstack_linked_list_iterator_t it; 9821 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9822 while (btstack_linked_list_iterator_has_next(&it)){ 9823 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9824 if (iso_stream->cis_handle == con_handle ) { 9825 return iso_stream; 9826 } 9827 } 9828 return NULL; 9829 } 9830 9831 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9832 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9833 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9834 btstack_memory_hci_iso_stream_free(iso_stream); 9835 } 9836 9837 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9838 btstack_linked_list_iterator_t it; 9839 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9840 while (btstack_linked_list_iterator_has_next(&it)){ 9841 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9842 if ((iso_stream->group_id == group_id) && 9843 (iso_stream->iso_type == iso_type)){ 9844 btstack_linked_list_iterator_remove(&it); 9845 btstack_memory_hci_iso_stream_free(iso_stream); 9846 } 9847 } 9848 } 9849 9850 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9851 btstack_linked_list_iterator_t it; 9852 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9853 while (btstack_linked_list_iterator_has_next(&it)){ 9854 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9855 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9856 (iso_stream->group_id == group_id)){ 9857 btstack_linked_list_iterator_remove(&it); 9858 btstack_memory_hci_iso_stream_free(iso_stream); 9859 } 9860 } 9861 } 9862 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9863 btstack_linked_list_iterator_t it; 9864 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9865 while (btstack_linked_list_iterator_has_next(&it)){ 9866 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9867 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9868 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9869 } 9870 } 9871 } 9872 9873 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9874 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9875 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9876 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9877 return (sdu_len_offset + 2 + sdu_len) == size; 9878 } 9879 9880 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 9881 if (iso_stream == NULL){ 9882 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 9883 return; 9884 } 9885 9886 if (hci_stack->iso_packet_handler == NULL) { 9887 return; 9888 } 9889 9890 // parse header 9891 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 9892 uint16_t data_total_length = little_endian_read_16(packet, 2); 9893 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 9894 9895 // assert packet is complete 9896 if ((data_total_length + 4u) != size){ 9897 return; 9898 } 9899 9900 if ((pb_flag & 0x01) == 0){ 9901 if (pb_flag == 0x02){ 9902 // The ISO_SDU_Fragment field contains a header and a complete SDU. 9903 if (hci_iso_sdu_complete(packet, size)) { 9904 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9905 } 9906 } else { 9907 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9908 if (size > sizeof(iso_stream->reassembly_buffer)){ 9909 return; 9910 } 9911 memcpy(iso_stream->reassembly_buffer, packet, size); 9912 // fix pb_flag 9913 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9914 iso_stream->reassembly_pos = size; 9915 } 9916 } else { 9917 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 9918 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 9919 if (ts_flag != 0){ 9920 return; 9921 } 9922 // append fragment 9923 if (iso_stream->reassembly_pos == 0){ 9924 return; 9925 } 9926 9927 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 9928 // reset reassembly buffer 9929 iso_stream->reassembly_pos = 0; 9930 return; 9931 } 9932 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 9933 iso_stream->reassembly_pos += data_total_length; 9934 9935 // deliver if last fragment and SDU complete 9936 if (pb_flag == 0x03){ 9937 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9938 // fix data_total_length 9939 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 9940 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9941 } 9942 // reset reassembly buffer 9943 iso_stream->reassembly_pos = 0; 9944 } 9945 } 9946 } 9947 9948 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9949 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9950 uint16_t pos = 0; 9951 event[pos++] = HCI_EVENT_META_GAP; 9952 event[pos++] = 4 + (2 * big->num_bis); 9953 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9954 event[pos++] = status; 9955 event[pos++] = big->big_handle; 9956 event[pos++] = big->num_bis; 9957 uint8_t i; 9958 for (i=0;i<big->num_bis;i++){ 9959 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9960 pos += 2; 9961 } 9962 hci_emit_event(event, pos, 0); 9963 } 9964 9965 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9966 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9967 uint16_t pos = 0; 9968 event[pos++] = HCI_EVENT_META_GAP; 9969 event[pos++] = 4 + (2 * cig->num_cis); 9970 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9971 event[pos++] = status; 9972 event[pos++] = cig->cig_id; 9973 event[pos++] = cig->num_cis; 9974 uint8_t i; 9975 for (i=0;i<cig->num_cis;i++){ 9976 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9977 pos += 2; 9978 } 9979 hci_emit_event(event, pos, 0); 9980 } 9981 9982 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 9983 uint16_t pos = 0; 9984 event[pos++] = HCI_EVENT_META_GAP; 9985 event[pos++] = 8; 9986 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9987 event[pos++] = status; 9988 event[pos++] = iso_stream->group_id; 9989 event[pos++] = iso_stream->stream_id; 9990 little_endian_store_16(event, pos, iso_stream->cis_handle); 9991 pos += 2; 9992 little_endian_store_16(event, pos, iso_stream->acl_handle); 9993 pos += 2; 9994 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 9995 pos += 2; 9996 event[pos++] = iso_stream->number_of_subevents; 9997 event[pos++] = iso_stream->burst_number_c_to_p; 9998 event[pos++] = iso_stream->burst_number_p_to_c; 9999 event[pos++] = iso_stream->flush_timeout_c_to_p; 10000 event[pos++] = iso_stream->flush_timeout_p_to_c; 10001 return pos; 10002 } 10003 10004 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10005 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10006 // cache data before finalizing struct 10007 uint8_t event [17]; 10008 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10009 btstack_assert(pos <= sizeof(event)); 10010 if (status != ERROR_CODE_SUCCESS){ 10011 hci_iso_stream_finalize(iso_stream); 10012 } 10013 hci_emit_event(event, pos, 0); 10014 } 10015 10016 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10017 uint8_t event [4]; 10018 uint16_t pos = 0; 10019 event[pos++] = HCI_EVENT_META_GAP; 10020 event[pos++] = 2; 10021 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10022 event[pos++] = big->big_handle; 10023 hci_emit_event(event, pos, 0); 10024 } 10025 10026 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10027 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10028 uint16_t pos = 0; 10029 event[pos++] = HCI_EVENT_META_GAP; 10030 event[pos++] = 4; 10031 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10032 event[pos++] = status; 10033 event[pos++] = big_sync->big_handle; 10034 event[pos++] = big_sync->num_bis; 10035 uint8_t i; 10036 for (i=0;i<big_sync->num_bis;i++){ 10037 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10038 pos += 2; 10039 } 10040 hci_emit_event(event, pos, 0); 10041 } 10042 10043 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10044 uint8_t event [4]; 10045 uint16_t pos = 0; 10046 event[pos++] = HCI_EVENT_META_GAP; 10047 event[pos++] = 2; 10048 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10049 event[pos++] = big_handle; 10050 hci_emit_event(event, pos, 0); 10051 } 10052 10053 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10054 uint8_t event[6]; 10055 uint16_t pos = 0; 10056 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10057 event[pos++] = sizeof(event) - 2; 10058 event[pos++] = big->big_handle; 10059 event[pos++] = bis_index; 10060 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10061 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10062 } 10063 10064 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10065 uint8_t event[4]; 10066 uint16_t pos = 0; 10067 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10068 event[pos++] = sizeof(event) - 2; 10069 little_endian_store_16(event, pos, cis_con_handle); 10070 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10071 } 10072 10073 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10074 btstack_linked_list_iterator_t it; 10075 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10076 while (btstack_linked_list_iterator_has_next(&it)){ 10077 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10078 if ( big->big_handle == big_handle ) { 10079 return big; 10080 } 10081 } 10082 return NULL; 10083 } 10084 10085 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10086 btstack_linked_list_iterator_t it; 10087 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10088 while (btstack_linked_list_iterator_has_next(&it)){ 10089 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10090 if ( big_sync->big_handle == big_handle ) { 10091 return big_sync; 10092 } 10093 } 10094 return NULL; 10095 } 10096 10097 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10098 hci_stack->iso_packets_to_queue = num_packets; 10099 } 10100 10101 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10102 btstack_linked_list_iterator_t it; 10103 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10104 while (btstack_linked_list_iterator_has_next(&it)){ 10105 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10106 if ( cig->cig_id == cig_id ) { 10107 return cig; 10108 } 10109 } 10110 return NULL; 10111 } 10112 10113 static void hci_iso_notify_can_send_now(void){ 10114 10115 // BIG 10116 10117 btstack_linked_list_iterator_t it; 10118 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10119 while (btstack_linked_list_iterator_has_next(&it)){ 10120 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10121 // track number completed packet timestamps 10122 if (big->num_completed_timestamp_current_valid){ 10123 big->num_completed_timestamp_current_valid = false; 10124 if (big->num_completed_timestamp_previous_valid){ 10125 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10126 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10127 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10128 big->num_completed_timestamp_previous_ms); 10129 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10130 // to catch up, skip packet on all BIS 10131 uint8_t i; 10132 for (i=0;i<big->num_bis;i++){ 10133 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10134 if (iso_stream){ 10135 iso_stream->num_packets_to_skip++; 10136 } 10137 } 10138 } 10139 } 10140 big->num_completed_timestamp_previous_valid = true; 10141 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10142 } 10143 10144 if (big->can_send_now_requested){ 10145 // check if no outgoing iso packets pending and no can send now have to be emitted 10146 uint8_t i; 10147 bool can_send = true; 10148 uint8_t num_iso_queued_minimum = 0; 10149 for (i=0;i<big->num_bis;i++){ 10150 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10151 if (iso_stream == NULL) continue; 10152 // handle case where individual ISO packet was sent too late: 10153 // for each additionally queued packet, a new one needs to get skipped 10154 if (i==0){ 10155 num_iso_queued_minimum = iso_stream->num_packets_sent; 10156 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10157 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10158 iso_stream->num_packets_to_skip += num_packets_to_skip; 10159 iso_stream->num_packets_sent -= num_packets_to_skip; 10160 } 10161 // check if we can send now 10162 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10163 can_send = false; 10164 break; 10165 } 10166 } 10167 if (can_send){ 10168 // propagate can send now to individual streams 10169 big->can_send_now_requested = false; 10170 for (i=0;i<big->num_bis;i++){ 10171 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10172 iso_stream->emit_ready_to_send = true; 10173 } 10174 } 10175 } 10176 } 10177 10178 if (hci_stack->hci_packet_buffer_reserved) return; 10179 10180 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10181 while (btstack_linked_list_iterator_has_next(&it)){ 10182 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10183 // report bis ready 10184 uint8_t i; 10185 for (i=0;i<big->num_bis;i++){ 10186 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10187 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10188 iso_stream->emit_ready_to_send = false; 10189 hci_emit_bis_can_send_now(big, i); 10190 break; 10191 } 10192 } 10193 } 10194 10195 // CIS 10196 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10197 while (btstack_linked_list_iterator_has_next(&it)) { 10198 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10199 if ((iso_stream->can_send_now_requested) && 10200 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10201 iso_stream->can_send_now_requested = false; 10202 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10203 } 10204 } 10205 } 10206 10207 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10208 if (hci_big_for_handle(big_params->big_handle) != NULL){ 10209 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10210 } 10211 if (big_params->num_bis == 0){ 10212 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10213 } 10214 if (big_params->num_bis > MAX_NR_BIS){ 10215 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10216 } 10217 10218 // reserve ISO Streams 10219 uint8_t i; 10220 uint8_t status = ERROR_CODE_SUCCESS; 10221 for (i=0;i<big_params->num_bis;i++){ 10222 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 10223 if (iso_stream == NULL) { 10224 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10225 break; 10226 } 10227 } 10228 10229 // free structs on error 10230 if (status != ERROR_CODE_SUCCESS){ 10231 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 10232 return status; 10233 } 10234 10235 le_audio_big_t * big = storage; 10236 big->big_handle = big_params->big_handle; 10237 big->params = big_params; 10238 big->state = LE_AUDIO_BIG_STATE_CREATE; 10239 big->num_bis = big_params->num_bis; 10240 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10241 10242 hci_run(); 10243 10244 return ERROR_CODE_SUCCESS; 10245 } 10246 10247 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10248 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 10249 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10250 } 10251 if (big_sync_params->num_bis == 0){ 10252 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10253 } 10254 if (big_sync_params->num_bis > MAX_NR_BIS){ 10255 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10256 } 10257 10258 le_audio_big_sync_t * big_sync = storage; 10259 big_sync->big_handle = big_sync_params->big_handle; 10260 big_sync->params = big_sync_params; 10261 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10262 big_sync->num_bis = big_sync_params->num_bis; 10263 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10264 10265 hci_run(); 10266 10267 return ERROR_CODE_SUCCESS; 10268 } 10269 10270 uint8_t gap_big_terminate(uint8_t big_handle){ 10271 le_audio_big_t * big = hci_big_for_handle(big_handle); 10272 if (big == NULL){ 10273 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10274 } 10275 switch (big->state){ 10276 case LE_AUDIO_BIG_STATE_CREATE: 10277 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10278 hci_emit_big_terminated(big); 10279 break; 10280 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10281 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10282 break; 10283 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10284 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10285 case LE_AUDIO_BIG_STATE_ACTIVE: 10286 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10287 hci_run(); 10288 break; 10289 default: 10290 return ERROR_CODE_COMMAND_DISALLOWED; 10291 } 10292 return ERROR_CODE_SUCCESS; 10293 } 10294 10295 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10296 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10297 if (big_sync == NULL){ 10298 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10299 } 10300 switch (big_sync->state){ 10301 case LE_AUDIO_BIG_STATE_CREATE: 10302 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10303 hci_emit_big_sync_stopped(big_handle); 10304 break; 10305 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10306 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10307 break; 10308 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10309 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10310 case LE_AUDIO_BIG_STATE_ACTIVE: 10311 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10312 hci_run(); 10313 break; 10314 default: 10315 return ERROR_CODE_COMMAND_DISALLOWED; 10316 } 10317 return ERROR_CODE_SUCCESS; 10318 } 10319 10320 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10321 le_audio_big_t * big = hci_big_for_handle(big_handle); 10322 if (big == NULL){ 10323 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10324 } 10325 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10326 return ERROR_CODE_COMMAND_DISALLOWED; 10327 } 10328 big->can_send_now_requested = true; 10329 hci_iso_notify_can_send_now(); 10330 return ERROR_CODE_SUCCESS; 10331 } 10332 10333 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10334 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10335 if (iso_stream == NULL){ 10336 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10337 } 10338 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10339 return ERROR_CODE_COMMAND_DISALLOWED; 10340 } 10341 iso_stream->can_send_now_requested = true; 10342 hci_iso_notify_can_send_now(); 10343 return ERROR_CODE_SUCCESS; 10344 } 10345 10346 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10347 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10348 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10349 } 10350 if (cig_params->num_cis == 0){ 10351 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10352 } 10353 if (cig_params->num_cis > MAX_NR_BIS){ 10354 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10355 } 10356 10357 // reserve ISO Streams 10358 uint8_t i; 10359 uint8_t status = ERROR_CODE_SUCCESS; 10360 for (i=0;i<cig_params->num_cis;i++){ 10361 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10362 if (iso_stream == NULL) { 10363 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10364 break; 10365 } 10366 } 10367 10368 // free structs on error 10369 if (status != ERROR_CODE_SUCCESS){ 10370 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10371 return status; 10372 } 10373 10374 le_audio_cig_t * cig = storage; 10375 cig->cig_id = cig_params->cig_id; 10376 cig->num_cis = cig_params->num_cis; 10377 cig->params = cig_params; 10378 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10379 for (i=0;i<cig->num_cis;i++){ 10380 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10381 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10382 cig->cis_setup_active[i] = false; 10383 cig->cis_established[i] = false; 10384 } 10385 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10386 10387 hci_run(); 10388 10389 return ERROR_CODE_SUCCESS; 10390 } 10391 10392 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10393 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10394 if (cig == NULL){ 10395 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10396 } 10397 10398 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10399 return ERROR_CODE_COMMAND_DISALLOWED; 10400 } 10401 10402 // store ACL Connection Handles 10403 uint8_t i; 10404 for (i=0;i<cig->num_cis;i++){ 10405 // check that all con handles exist and store 10406 hci_con_handle_t cis_handle = cis_con_handles[i]; 10407 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10408 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10409 } 10410 uint8_t j; 10411 bool found = false; 10412 for (j=0;j<cig->num_cis;j++){ 10413 if (cig->cis_con_handles[j] == cis_handle){ 10414 cig->acl_con_handles[j] = acl_con_handles[j]; 10415 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10416 btstack_assert(iso_stream != NULL); 10417 iso_stream->acl_handle = acl_con_handles[j]; 10418 found = true; 10419 break; 10420 } 10421 } 10422 if (!found){ 10423 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10424 } 10425 } 10426 10427 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10428 hci_run(); 10429 10430 return ERROR_CODE_SUCCESS; 10431 } 10432 10433 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10434 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10435 if (iso_stream == NULL){ 10436 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10437 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10438 } 10439 10440 // set next state and continue 10441 iso_stream->state = state; 10442 hci_run(); 10443 return ERROR_CODE_SUCCESS; 10444 } 10445 10446 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10447 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10448 } 10449 10450 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10451 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10452 } 10453 10454 10455 #endif 10456 #endif /* ENABLE_BLE */ 10457 10458 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10459 void hci_setup_test_connections_fuzz(void){ 10460 hci_connection_t * conn; 10461 10462 // default address: 66:55:44:33:00:01 10463 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10464 10465 // setup Controller info 10466 hci_stack->num_cmd_packets = 255; 10467 hci_stack->acl_packets_total_num = 255; 10468 10469 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10470 addr[5] = 0x01; 10471 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10472 conn->con_handle = addr[5]; 10473 conn->state = RECEIVED_CONNECTION_REQUEST; 10474 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10475 10476 // setup incoming Classic SCO connection with con handle 0x0002 10477 addr[5] = 0x02; 10478 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10479 conn->con_handle = addr[5]; 10480 conn->state = RECEIVED_CONNECTION_REQUEST; 10481 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10482 10483 // setup ready Classic ACL connection with con handle 0x0003 10484 addr[5] = 0x03; 10485 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10486 conn->con_handle = addr[5]; 10487 conn->state = OPEN; 10488 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10489 10490 // setup ready Classic SCO connection with con handle 0x0004 10491 addr[5] = 0x04; 10492 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10493 conn->con_handle = addr[5]; 10494 conn->state = OPEN; 10495 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10496 10497 // setup ready LE ACL connection with con handle 0x005 and public address 10498 addr[5] = 0x05; 10499 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10500 conn->con_handle = addr[5]; 10501 conn->state = OPEN; 10502 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10503 conn->sm_connection.sm_connection_encrypted = 1; 10504 } 10505 10506 void hci_free_connections_fuzz(void){ 10507 btstack_linked_list_iterator_t it; 10508 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10509 while (btstack_linked_list_iterator_has_next(&it)){ 10510 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10511 btstack_linked_list_iterator_remove(&it); 10512 btstack_memory_hci_connection_free(con); 10513 } 10514 } 10515 void hci_simulate_working_fuzz(void){ 10516 hci_stack->le_scanning_param_update = false; 10517 hci_init_done(); 10518 hci_stack->num_cmd_packets = 255; 10519 } 10520 #endif 10521