1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static bool hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 247 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 248 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 249 static void hci_iso_notify_can_send_now(void); 250 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 251 static void hci_emit_big_terminated(const le_audio_big_t * big); 252 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 253 static void hci_emit_big_sync_stopped(uint8_t big_handle); 254 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 255 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 258 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 259 #endif /* ENABLE_BLE */ 260 261 // the STACK is here 262 #ifndef HAVE_MALLOC 263 static hci_stack_t hci_stack_static; 264 #endif 265 static hci_stack_t * hci_stack = NULL; 266 267 #ifdef ENABLE_CLASSIC 268 // default name 269 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 270 271 // test helper 272 static uint8_t disable_l2cap_timeouts = 0; 273 #endif 274 275 // reset connection state on create and on reconnect 276 // don't overwrite addr, con handle, role 277 static void hci_connection_init(hci_connection_t * conn){ 278 conn->authentication_flags = AUTH_FLAG_NONE; 279 conn->bonding_flags = 0; 280 conn->requested_security_level = LEVEL_0; 281 #ifdef ENABLE_CLASSIC 282 conn->request_role = HCI_ROLE_INVALID; 283 conn->sniff_subrating_max_latency = 0xffff; 284 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 285 conn->link_key_type = INVALID_LINK_KEY; 286 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 287 btstack_run_loop_set_timer_context(&conn->timeout, conn); 288 hci_connection_timestamp(conn); 289 #endif 290 conn->acl_recombination_length = 0; 291 conn->acl_recombination_pos = 0; 292 conn->num_packets_sent = 0; 293 294 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 295 #ifdef ENABLE_BLE 296 conn->le_phy_update_all_phys = 0xff; 297 #endif 298 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 299 conn->le_max_tx_octets = 27; 300 #endif 301 #ifdef ENABLE_CLASSIC_PAIRING_OOB 302 conn->classic_oob_c_192 = NULL; 303 conn->classic_oob_r_192 = NULL; 304 conn->classic_oob_c_256 = NULL; 305 conn->classic_oob_r_256 = NULL; 306 #endif 307 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 308 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 309 conn->le_past_advertising_handle = 0xff; 310 #endif 311 } 312 313 /** 314 * create connection for given address 315 * 316 * @return connection OR NULL, if no memory left 317 */ 318 static hci_connection_t * 319 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 320 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 321 322 hci_connection_t * conn = btstack_memory_hci_connection_get(); 323 if (!conn) return NULL; 324 hci_connection_init(conn); 325 326 bd_addr_copy(conn->address, addr); 327 conn->address_type = addr_type; 328 conn->con_handle = HCI_CON_HANDLE_INVALID; 329 conn->role = role; 330 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 331 332 return conn; 333 } 334 335 336 /** 337 * get le connection parameter range 338 * 339 * @return le connection parameter range struct 340 */ 341 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 342 *range = hci_stack->le_connection_parameter_range; 343 } 344 345 /** 346 * set le connection parameter range 347 * 348 */ 349 350 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 351 hci_stack->le_connection_parameter_range = *range; 352 } 353 354 /** 355 * @brief Test if connection parameters are inside in existing rage 356 * @param conn_interval_min (unit: 1.25ms) 357 * @param conn_interval_max (unit: 1.25ms) 358 * @param conn_latency 359 * @param supervision_timeout (unit: 10ms) 360 * @return 1 if included 361 */ 362 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 363 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 364 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 365 366 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 367 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 368 369 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 370 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 371 372 return 1; 373 } 374 375 /** 376 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 377 * @note: default: 1 378 * @param max_peripheral_connections 379 */ 380 #ifdef ENABLE_LE_PERIPHERAL 381 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 382 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 383 } 384 #endif 385 386 /** 387 * get hci connections iterator 388 * 389 * @return hci connections iterator 390 */ 391 392 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 393 btstack_linked_list_iterator_init(it, &hci_stack->connections); 394 } 395 396 /** 397 * get connection for a given handle 398 * 399 * @return connection OR NULL, if not found 400 */ 401 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 402 btstack_linked_list_iterator_t it; 403 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 404 while (btstack_linked_list_iterator_has_next(&it)){ 405 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 406 if ( item->con_handle == con_handle ) { 407 return item; 408 } 409 } 410 return NULL; 411 } 412 413 /** 414 * get connection for given address 415 * 416 * @return connection OR NULL, if not found 417 */ 418 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 419 btstack_linked_list_iterator_t it; 420 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 421 while (btstack_linked_list_iterator_has_next(&it)){ 422 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 423 if (connection->address_type != addr_type) continue; 424 if (memcmp(addr, connection->address, 6) != 0) continue; 425 return connection; 426 } 427 return NULL; 428 } 429 430 #ifdef ENABLE_CLASSIC 431 432 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 433 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 434 } 435 436 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 437 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 438 } 439 440 #ifdef ENABLE_SCO_OVER_HCI 441 static int hci_number_sco_connections(void){ 442 int connections = 0; 443 btstack_linked_list_iterator_t it; 444 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 445 while (btstack_linked_list_iterator_has_next(&it)){ 446 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 447 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 448 connections++; 449 } 450 return connections; 451 } 452 #endif 453 454 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 455 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 456 #ifdef HAVE_EMBEDDED_TICK 457 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 458 // connections might be timed out 459 hci_emit_l2cap_check_timeout(connection); 460 } 461 #else 462 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 463 // connections might be timed out 464 hci_emit_l2cap_check_timeout(connection); 465 } 466 #endif 467 } 468 469 static void hci_connection_timestamp(hci_connection_t *connection){ 470 #ifdef HAVE_EMBEDDED_TICK 471 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 472 #else 473 connection->timestamp = btstack_run_loop_get_time_ms(); 474 #endif 475 } 476 477 /** 478 * add authentication flags and reset timer 479 * @note: assumes classic connection 480 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 481 */ 482 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 483 bd_addr_t addr; 484 reverse_bd_addr(bd_addr, addr); 485 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 486 if (conn) { 487 connectionSetAuthenticationFlags(conn, flags); 488 hci_connection_timestamp(conn); 489 } 490 } 491 492 static bool hci_pairing_active(hci_connection_t * hci_connection){ 493 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 494 } 495 496 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 497 if (hci_pairing_active(hci_connection)) return; 498 if (ssp){ 499 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 500 } else { 501 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 502 } 503 // if we are initiator, we have sent an HCI Authenticate Request 504 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 505 506 // if we are responder, use minimal service security level as required level 507 if (!initiator){ 508 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 509 } 510 511 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 512 513 uint8_t event[12]; 514 event[0] = GAP_EVENT_PAIRING_STARTED; 515 event[1] = 10; 516 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 517 reverse_bd_addr(hci_connection->address, &event[4]); 518 event[10] = (uint8_t) ssp; 519 event[11] = (uint8_t) initiator; 520 hci_emit_event(event, sizeof(event), 1); 521 } 522 523 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 524 hci_connection->requested_security_level = LEVEL_0; 525 if (!hci_pairing_active(hci_connection)) return; 526 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 527 #ifdef ENABLE_CLASSIC_PAIRING_OOB 528 hci_connection->classic_oob_c_192 = NULL; 529 hci_connection->classic_oob_r_192 = NULL; 530 hci_connection->classic_oob_c_256 = NULL; 531 hci_connection->classic_oob_r_256 = NULL; 532 #endif 533 log_info("pairing complete, status %02x", status); 534 535 uint8_t event[11]; 536 event[0] = GAP_EVENT_PAIRING_COMPLETE; 537 event[1] = 9; 538 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 539 reverse_bd_addr(hci_connection->address, &event[4]); 540 event[10] = status; 541 hci_emit_event(event, sizeof(event), 1); 542 543 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 544 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 545 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 546 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 547 hci_connection->bonding_status = status; 548 } 549 } 550 551 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 552 hci_connection_t * conn = hci_connection_for_handle(handle); 553 if (!conn) return false; 554 return hci_pairing_active(conn); 555 } 556 557 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 558 if (!hci_stack->link_key_db) return; 559 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 560 hci_stack->link_key_db->delete_link_key(addr); 561 } 562 563 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 564 if (!hci_stack->link_key_db) return; 565 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 566 hci_stack->link_key_db->put_link_key(addr, link_key, type); 567 } 568 569 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 570 if (!hci_stack->link_key_db) return false; 571 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 572 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 573 return result; 574 } 575 576 void gap_delete_all_link_keys(void){ 577 bd_addr_t addr; 578 link_key_t link_key; 579 link_key_type_t type; 580 btstack_link_key_iterator_t it; 581 int ok = gap_link_key_iterator_init(&it); 582 if (!ok) { 583 log_error("could not initialize iterator"); 584 return; 585 } 586 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 587 gap_drop_link_key_for_bd_addr(addr); 588 } 589 gap_link_key_iterator_done(&it); 590 } 591 592 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 593 if (!hci_stack->link_key_db) return 0; 594 if (!hci_stack->link_key_db->iterator_init) return 0; 595 return hci_stack->link_key_db->iterator_init(it); 596 } 597 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 598 if (!hci_stack->link_key_db) return 0; 599 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 600 } 601 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 602 if (!hci_stack->link_key_db) return; 603 hci_stack->link_key_db->iterator_done(it); 604 } 605 #endif 606 607 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 608 switch (address_type){ 609 case BD_ADDR_TYPE_LE_PUBLIC: 610 case BD_ADDR_TYPE_LE_RANDOM: 611 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 612 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 613 return true; 614 default: 615 return false; 616 } 617 } 618 619 static bool hci_is_le_connection(hci_connection_t * connection){ 620 return hci_is_le_connection_type(connection->address_type); 621 } 622 623 /** 624 * count connections 625 */ 626 static int nr_hci_connections(void){ 627 int count = 0; 628 btstack_linked_item_t *it; 629 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 630 count++; 631 } 632 return count; 633 } 634 635 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 636 637 unsigned int num_packets_sent_classic = 0; 638 unsigned int num_packets_sent_le = 0; 639 640 btstack_linked_item_t *it; 641 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 642 hci_connection_t * connection = (hci_connection_t *) it; 643 if (hci_is_le_connection(connection)){ 644 num_packets_sent_le += connection->num_packets_sent; 645 } 646 if (connection->address_type == BD_ADDR_TYPE_ACL){ 647 num_packets_sent_classic += connection->num_packets_sent; 648 } 649 } 650 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 651 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 652 int free_slots_le = 0; 653 654 if (free_slots_classic < 0){ 655 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 656 return 0; 657 } 658 659 if (hci_stack->le_acl_packets_total_num){ 660 // if we have LE slots, they are used 661 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 662 if (free_slots_le < 0){ 663 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 664 return 0; 665 } 666 } else { 667 // otherwise, classic slots are used for LE, too 668 free_slots_classic -= num_packets_sent_le; 669 if (free_slots_classic < 0){ 670 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 671 return 0; 672 } 673 } 674 675 switch (address_type){ 676 case BD_ADDR_TYPE_UNKNOWN: 677 log_error("hci_number_free_acl_slots: unknown address type"); 678 return 0; 679 680 case BD_ADDR_TYPE_ACL: 681 return (uint16_t) free_slots_classic; 682 683 default: 684 if (hci_stack->le_acl_packets_total_num > 0){ 685 return (uint16_t) free_slots_le; 686 } 687 return (uint16_t) free_slots_classic; 688 } 689 } 690 691 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 692 // get connection type 693 hci_connection_t * connection = hci_connection_for_handle(con_handle); 694 if (!connection){ 695 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 696 return 0; 697 } 698 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 699 } 700 701 #ifdef ENABLE_CLASSIC 702 static int hci_number_free_sco_slots(void){ 703 unsigned int num_sco_packets_sent = 0; 704 btstack_linked_item_t *it; 705 if (hci_stack->synchronous_flow_control_enabled){ 706 // explicit flow control 707 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 708 hci_connection_t * connection = (hci_connection_t *) it; 709 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 710 num_sco_packets_sent += connection->num_packets_sent; 711 } 712 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 713 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 714 return 0; 715 } 716 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 717 } else { 718 // implicit flow control 719 int num_ready = 0; 720 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 721 hci_connection_t * connection = (hci_connection_t *) it; 722 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 723 if (connection->sco_tx_ready == 0) continue; 724 num_ready++; 725 } 726 return num_ready; 727 } 728 } 729 #endif 730 731 // only used to send HCI Host Number Completed Packets 732 static int hci_can_send_comand_packet_transport(void){ 733 if (hci_stack->hci_packet_buffer_reserved) return 0; 734 735 // check for async hci transport implementations 736 if (hci_stack->hci_transport->can_send_packet_now){ 737 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 738 return 0; 739 } 740 } 741 return 1; 742 } 743 744 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 745 bool hci_can_send_command_packet_now(void){ 746 if (hci_can_send_comand_packet_transport() == 0) return false; 747 return hci_stack->num_cmd_packets > 0u; 748 } 749 750 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 751 // check for async hci transport implementations 752 if (!hci_stack->hci_transport->can_send_packet_now) return true; 753 return hci_stack->hci_transport->can_send_packet_now(packet_type); 754 } 755 756 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 757 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 758 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 759 } 760 761 bool hci_can_send_acl_le_packet_now(void){ 762 if (hci_stack->hci_packet_buffer_reserved) return false; 763 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 764 } 765 766 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 767 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 768 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 769 } 770 771 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 772 if (hci_stack->hci_packet_buffer_reserved) return false; 773 return hci_can_send_prepared_acl_packet_now(con_handle); 774 } 775 776 #ifdef ENABLE_CLASSIC 777 bool hci_can_send_acl_classic_packet_now(void){ 778 if (hci_stack->hci_packet_buffer_reserved) return false; 779 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 780 } 781 782 bool hci_can_send_prepared_sco_packet_now(void){ 783 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 784 if (hci_have_usb_transport()){ 785 return hci_stack->sco_can_send_now; 786 } else { 787 return hci_number_free_sco_slots() > 0; 788 } 789 } 790 791 bool hci_can_send_sco_packet_now(void){ 792 if (hci_stack->hci_packet_buffer_reserved) return false; 793 return hci_can_send_prepared_sco_packet_now(); 794 } 795 796 void hci_request_sco_can_send_now_event(void){ 797 hci_stack->sco_waiting_for_can_send_now = 1; 798 hci_notify_if_sco_can_send_now(); 799 } 800 #endif 801 802 // used for internal checks in l2cap.c 803 bool hci_is_packet_buffer_reserved(void){ 804 return hci_stack->hci_packet_buffer_reserved; 805 } 806 807 // reserves outgoing packet buffer. 808 // @return 1 if successful 809 bool hci_reserve_packet_buffer(void){ 810 if (hci_stack->hci_packet_buffer_reserved) { 811 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 812 return false; 813 } 814 hci_stack->hci_packet_buffer_reserved = true; 815 return true; 816 } 817 818 void hci_release_packet_buffer(void){ 819 hci_stack->hci_packet_buffer_reserved = false; 820 } 821 822 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 823 static int hci_transport_synchronous(void){ 824 return hci_stack->hci_transport->can_send_packet_now == NULL; 825 } 826 827 // used for debugging 828 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 829 static void hci_controller_dump_packets(void){ 830 // format: "{handle:04x}:{count:02d} " 831 char summaries[3][7 * 8 + 1]; 832 uint16_t totals[3]; 833 uint8_t index; 834 for (index = 0 ; index < 3 ; index++){ 835 summaries[index][0] = 0; 836 totals[index] = 0; 837 } 838 btstack_linked_item_t *it; 839 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 840 hci_connection_t * connection = (hci_connection_t *) it; 841 switch (connection->address_type){ 842 case BD_ADDR_TYPE_ACL: 843 index = 0; 844 break; 845 case BD_ADDR_TYPE_SCO: 846 index = 2; 847 break; 848 default: 849 index = 1; 850 break; 851 } 852 totals[index] += connection->num_packets_sent; 853 char item_text[10]; 854 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 855 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 856 } 857 for (index = 0 ; index < 3 ; index++){ 858 if (summaries[index][0] == 0){ 859 summaries[index][0] = '-'; 860 summaries[index][1] = 0; 861 } 862 } 863 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 864 } 865 #endif 866 867 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 868 869 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 870 871 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 872 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 873 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 874 max_acl_data_packet_length = hci_stack->le_data_packets_length; 875 } 876 877 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 878 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 879 max_acl_data_packet_length = connection->le_max_tx_octets; 880 } 881 #endif 882 883 log_debug("hci_send_acl_packet_fragments entered"); 884 885 uint8_t status = ERROR_CODE_SUCCESS; 886 // multiple packets could be send on a synchronous HCI transport 887 while (true){ 888 889 log_debug("hci_send_acl_packet_fragments loop entered"); 890 891 // get current data 892 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 893 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 894 bool more_fragments = false; 895 896 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 897 if (current_acl_data_packet_length > max_acl_data_packet_length){ 898 more_fragments = true; 899 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 900 } 901 902 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 903 if (acl_header_pos > 0u){ 904 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 905 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 906 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 907 } 908 909 // update header len 910 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 911 912 // count packet 913 connection->num_packets_sent++; 914 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 915 916 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 917 if (more_fragments){ 918 // update start of next fragment to send 919 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 920 } else { 921 // done 922 hci_stack->acl_fragmentation_pos = 0; 923 hci_stack->acl_fragmentation_total_size = 0; 924 } 925 926 // send packet 927 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 928 const int size = current_acl_data_packet_length + 4; 929 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 930 hci_stack->acl_fragmentation_tx_active = 1; 931 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 932 if (err != 0){ 933 // no error from HCI Transport expected 934 status = ERROR_CODE_HARDWARE_FAILURE; 935 } 936 937 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 938 hci_controller_dump_packets(); 939 #endif 940 941 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 942 943 // done yet? 944 if (!more_fragments) break; 945 946 // can send more? 947 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 948 } 949 950 log_debug("hci_send_acl_packet_fragments loop over"); 951 952 // release buffer now for synchronous transport 953 if (hci_transport_synchronous()){ 954 hci_stack->acl_fragmentation_tx_active = 0; 955 hci_release_packet_buffer(); 956 hci_emit_transport_packet_sent(); 957 } 958 959 return status; 960 } 961 962 // pre: caller has reserved the packet buffer 963 uint8_t hci_send_acl_packet_buffer(int size){ 964 btstack_assert(hci_stack->hci_packet_buffer_reserved); 965 966 uint8_t * packet = hci_stack->hci_packet_buffer; 967 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 968 969 hci_connection_t *connection = hci_connection_for_handle( con_handle); 970 if (!connection) { 971 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 972 hci_release_packet_buffer(); 973 hci_emit_transport_packet_sent(); 974 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 975 } 976 977 // check for free places on Bluetooth module 978 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 979 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 980 hci_release_packet_buffer(); 981 hci_emit_transport_packet_sent(); 982 return BTSTACK_ACL_BUFFERS_FULL; 983 } 984 985 #ifdef ENABLE_CLASSIC 986 hci_connection_timestamp(connection); 987 #endif 988 989 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 990 991 // setup data 992 hci_stack->acl_fragmentation_total_size = size; 993 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 994 995 return hci_send_acl_packet_fragments(connection); 996 } 997 998 #ifdef ENABLE_CLASSIC 999 // pre: caller has reserved the packet buffer 1000 uint8_t hci_send_sco_packet_buffer(int size){ 1001 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1002 1003 uint8_t * packet = hci_stack->hci_packet_buffer; 1004 1005 // skip checks in loopback mode 1006 if (!hci_stack->loopback_mode){ 1007 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1008 1009 // check for free places on Bluetooth module 1010 if (!hci_can_send_prepared_sco_packet_now()) { 1011 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1012 hci_release_packet_buffer(); 1013 hci_emit_transport_packet_sent(); 1014 return BTSTACK_ACL_BUFFERS_FULL; 1015 } 1016 1017 // track send packet in connection struct 1018 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1019 if (!connection) { 1020 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1021 hci_release_packet_buffer(); 1022 hci_emit_transport_packet_sent(); 1023 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1024 } 1025 1026 if (hci_have_usb_transport()){ 1027 // token used 1028 hci_stack->sco_can_send_now = false; 1029 } else { 1030 if (hci_stack->synchronous_flow_control_enabled){ 1031 connection->num_packets_sent++; 1032 } else { 1033 connection->sco_tx_ready--; 1034 } 1035 } 1036 } 1037 1038 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1039 1040 #ifdef HAVE_SCO_TRANSPORT 1041 hci_stack->sco_transport->send_packet(packet, size); 1042 hci_release_packet_buffer(); 1043 hci_emit_transport_packet_sent(); 1044 1045 return 0; 1046 #else 1047 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1048 if (hci_transport_synchronous()){ 1049 hci_release_packet_buffer(); 1050 hci_emit_transport_packet_sent(); 1051 } 1052 1053 if (err != 0){ 1054 return ERROR_CODE_HARDWARE_FAILURE; 1055 } 1056 return ERROR_CODE_SUCCESS; 1057 #endif 1058 } 1059 #endif 1060 1061 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1062 static uint8_t hci_send_iso_packet_fragments(void){ 1063 1064 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1065 uint8_t status = ERROR_CODE_SUCCESS; 1066 // multiple packets could be send on a synchronous HCI transport 1067 while (true){ 1068 1069 // get current data 1070 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1071 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1072 bool more_fragments = false; 1073 1074 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1075 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1076 more_fragments = true; 1077 current_iso_data_packet_length = max_iso_data_packet_length; 1078 } 1079 1080 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1081 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1082 uint8_t pb_flags; 1083 if (iso_header_pos == 0u){ 1084 // first fragment, keep TS field 1085 pb_flags = more_fragments ? 0x00 : 0x02; 1086 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1087 } else { 1088 // later fragment, drop TS field 1089 pb_flags = more_fragments ? 0x01 : 0x03; 1090 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1091 } 1092 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1093 1094 // update header len 1095 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1096 1097 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1098 if (more_fragments){ 1099 // update start of next fragment to send 1100 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1101 } else { 1102 // done 1103 hci_stack->iso_fragmentation_pos = 0; 1104 hci_stack->iso_fragmentation_total_size = 0; 1105 } 1106 1107 // send packet 1108 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1109 const int size = current_iso_data_packet_length + 4; 1110 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1111 hci_stack->iso_fragmentation_tx_active = true; 1112 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1113 if (err != 0){ 1114 // no error from HCI Transport expected 1115 status = ERROR_CODE_HARDWARE_FAILURE; 1116 } 1117 1118 // done yet? 1119 if (!more_fragments) break; 1120 1121 // can send more? 1122 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1123 } 1124 1125 // release buffer now for synchronous transport 1126 if (hci_transport_synchronous()){ 1127 hci_stack->iso_fragmentation_tx_active = false; 1128 hci_release_packet_buffer(); 1129 hci_emit_transport_packet_sent(); 1130 } 1131 1132 return status; 1133 } 1134 1135 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1136 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1137 1138 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1139 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1140 if (iso_stream == NULL){ 1141 hci_release_packet_buffer(); 1142 hci_iso_notify_can_send_now(); 1143 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1144 } 1145 1146 // TODO: check for space on controller 1147 1148 // skip iso packets if needed 1149 if (iso_stream->num_packets_to_skip > 0){ 1150 iso_stream->num_packets_to_skip--; 1151 // pretend it was processed and trigger next one 1152 hci_release_packet_buffer(); 1153 hci_iso_notify_can_send_now(); 1154 return ERROR_CODE_SUCCESS; 1155 } 1156 1157 // track outgoing packet sent 1158 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1159 iso_stream->num_packets_sent++; 1160 1161 // setup data 1162 hci_stack->iso_fragmentation_total_size = size; 1163 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1164 1165 return hci_send_iso_packet_fragments(); 1166 } 1167 #endif 1168 1169 static void acl_handler(uint8_t *packet, uint16_t size){ 1170 1171 // get info 1172 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1173 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1174 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1175 uint16_t acl_length = READ_ACL_LENGTH(packet); 1176 1177 // ignore non-registered handle 1178 if (!conn){ 1179 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1180 return; 1181 } 1182 1183 // assert packet is complete 1184 if ((acl_length + 4u) != size){ 1185 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1186 return; 1187 } 1188 1189 #ifdef ENABLE_CLASSIC 1190 // update idle timestamp 1191 hci_connection_timestamp(conn); 1192 #endif 1193 1194 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1195 hci_stack->host_completed_packets = 1; 1196 conn->num_packets_completed++; 1197 #endif 1198 1199 // handle different packet types 1200 switch (acl_flags & 0x03u) { 1201 1202 case 0x01: // continuation fragment 1203 1204 // sanity checks 1205 if (conn->acl_recombination_pos == 0u) { 1206 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1207 return; 1208 } 1209 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1210 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1211 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1212 conn->acl_recombination_pos = 0; 1213 return; 1214 } 1215 1216 // append fragment payload (header already stored) 1217 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1218 &packet[4], acl_length); 1219 conn->acl_recombination_pos += acl_length; 1220 1221 // forward complete L2CAP packet if complete. 1222 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1223 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1224 // reset recombination buffer 1225 conn->acl_recombination_length = 0; 1226 conn->acl_recombination_pos = 0; 1227 } 1228 break; 1229 1230 case 0x02: { // first fragment 1231 1232 // sanity check 1233 if (conn->acl_recombination_pos) { 1234 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1235 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1236 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1237 } 1238 conn->acl_recombination_pos = 0; 1239 } 1240 1241 // peek into L2CAP packet! 1242 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1243 1244 // compare fragment size to L2CAP packet size 1245 if (acl_length >= (l2cap_length + 4u)){ 1246 // forward fragment as L2CAP packet 1247 hci_emit_acl_packet(packet, acl_length + 4u); 1248 } else { 1249 1250 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1251 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1252 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1253 return; 1254 } 1255 1256 // store first fragment and tweak acl length for complete package 1257 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1258 packet, acl_length + 4u); 1259 conn->acl_recombination_pos = acl_length + 4u; 1260 conn->acl_recombination_length = l2cap_length; 1261 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1262 } 1263 break; 1264 1265 } 1266 default: 1267 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1268 return; 1269 } 1270 1271 // execute main loop 1272 hci_run(); 1273 } 1274 1275 static void hci_connection_stop_timer(hci_connection_t * conn){ 1276 btstack_run_loop_remove_timer(&conn->timeout); 1277 #ifdef ENABLE_CLASSIC 1278 btstack_run_loop_remove_timer(&conn->timeout_sco); 1279 #endif 1280 } 1281 1282 static void hci_shutdown_connection(hci_connection_t *conn){ 1283 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1284 1285 #ifdef ENABLE_CLASSIC 1286 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1287 bd_addr_type_t addr_type = conn->address_type; 1288 #endif 1289 #ifdef HAVE_SCO_TRANSPORT 1290 hci_con_handle_t con_handle = conn->con_handle; 1291 #endif 1292 #endif 1293 1294 hci_connection_stop_timer(conn); 1295 1296 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1297 btstack_memory_hci_connection_free( conn ); 1298 1299 // now it's gone 1300 hci_emit_nr_connections_changed(); 1301 1302 #ifdef ENABLE_CLASSIC 1303 #ifdef ENABLE_SCO_OVER_HCI 1304 // update SCO 1305 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1306 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1307 } 1308 #endif 1309 #ifdef HAVE_SCO_TRANSPORT 1310 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1311 hci_stack->sco_transport->close(con_handle); 1312 } 1313 #endif 1314 #endif 1315 } 1316 1317 #ifdef ENABLE_CLASSIC 1318 1319 static const uint16_t hci_acl_packet_type_sizes[] = { 1320 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1321 HCI_ACL_DH1_SIZE, 0, 0, 0, 1322 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1323 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1324 }; 1325 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1326 0, // 3 slot packets 1327 1, // 5 slot packets 1328 25, // EDR 2 mpbs 1329 26, // EDR 3 mbps 1330 39, // 3 slot EDR packts 1331 40, // 5 slot EDR packet 1332 }; 1333 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1334 0x0f00, // 3 slot packets 1335 0xf000, // 5 slot packets 1336 0x1102, // EDR 2 mpbs 1337 0x2204, // EDR 3 mbps 1338 0x0300, // 3 slot EDR packts 1339 0x3000, // 5 slot EDR packet 1340 }; 1341 1342 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1343 // enable packet types based on size 1344 uint16_t packet_types = 0; 1345 unsigned int i; 1346 for (i=0;i<16;i++){ 1347 if (hci_acl_packet_type_sizes[i] == 0) continue; 1348 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1349 packet_types |= 1 << i; 1350 } 1351 } 1352 // disable packet types due to missing local supported features 1353 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1354 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1355 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1356 if (feature_set) continue; 1357 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1358 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1359 } 1360 return packet_types; 1361 } 1362 1363 uint16_t hci_usable_acl_packet_types(void){ 1364 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1365 // flip bits for "may not be used" 1366 return active_packet_types ^ 0x3306; 1367 } 1368 1369 void hci_enable_acl_packet_types(uint16_t packet_types){ 1370 hci_stack->enabled_packet_types_acl = packet_types; 1371 } 1372 1373 static const struct { 1374 uint8_t feature_index; 1375 uint16_t feature_packet_mask; 1376 } hci_sco_packet_type_feature_requirements[] = { 1377 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1378 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1379 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1380 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1381 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1382 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1383 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1384 }; 1385 1386 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1387 static const struct { 1388 uint16_t type; 1389 uint16_t payload_length; 1390 } hci_sco_packet_type_to_payload_length[] = { 1391 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1392 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1393 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1394 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1395 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1396 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1397 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1398 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1399 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1400 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1401 }; 1402 1403 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1404 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1405 unsigned int i; 1406 // disable packet types due to missing local supported features 1407 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1408 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1409 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1410 if (feature_set) continue; 1411 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1412 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1413 } 1414 return packet_types; 1415 } 1416 1417 uint16_t hci_usable_sco_packet_types(void){ 1418 return hci_stack->usable_packet_types_sco; 1419 } 1420 1421 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1422 uint8_t i; 1423 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1424 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1425 return hci_sco_packet_type_to_payload_length[i].payload_length; 1426 } 1427 } 1428 return 0; 1429 } 1430 1431 #endif 1432 1433 uint8_t* hci_get_outgoing_packet_buffer(void){ 1434 // hci packet buffer is >= acl data packet length 1435 return hci_stack->hci_packet_buffer; 1436 } 1437 1438 uint16_t hci_max_acl_data_packet_length(void){ 1439 return hci_stack->acl_data_packet_length; 1440 } 1441 1442 #ifdef ENABLE_CLASSIC 1443 bool hci_extended_sco_link_supported(void){ 1444 // No. 31, byte 3, bit 7 1445 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1446 } 1447 #endif 1448 1449 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1450 // No. 54, byte 6, bit 6 1451 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1452 } 1453 1454 #ifdef ENABLE_CLASSIC 1455 static int gap_ssp_supported(void){ 1456 // No. 51, byte 6, bit 3 1457 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1458 } 1459 #endif 1460 1461 static int hci_classic_supported(void){ 1462 #ifdef ENABLE_CLASSIC 1463 // No. 37, byte 4, bit 5, = No BR/EDR Support 1464 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1465 #else 1466 return 0; 1467 #endif 1468 } 1469 1470 static int hci_le_supported(void){ 1471 #ifdef ENABLE_BLE 1472 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1473 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1474 #else 1475 return 0; 1476 #endif 1477 } 1478 1479 static bool hci_command_supported(uint8_t command_index){ 1480 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1481 } 1482 1483 #ifdef ENABLE_BLE 1484 1485 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1486 static bool hci_extended_advertising_supported(void){ 1487 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1488 } 1489 #endif 1490 1491 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1492 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1493 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1494 } else { 1495 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1496 } 1497 } 1498 1499 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1500 *addr_type = hci_stack->le_own_addr_type; 1501 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1502 } 1503 1504 #ifdef ENABLE_LE_PERIPHERAL 1505 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1506 *addr_type = hci_stack->le_advertisements_own_addr_type; 1507 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1508 }; 1509 #endif 1510 1511 #ifdef ENABLE_LE_CENTRAL 1512 1513 /** 1514 * @brief Get own addr type and address used for LE connections (Central) 1515 */ 1516 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1517 *addr_type = hci_stack->le_connection_own_addr_type; 1518 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1519 } 1520 1521 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1522 1523 uint16_t offset = 3; 1524 uint8_t num_reports = packet[offset]; 1525 offset += 1; 1526 1527 uint16_t i; 1528 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1529 for (i=0; (i<num_reports) && (offset < size);i++){ 1530 // sanity checks on data_length: 1531 uint8_t data_length = packet[offset + 8]; 1532 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1533 if ((offset + 9u + data_length + 1u) > size) return; 1534 // setup event 1535 uint8_t event_size = 10u + data_length; 1536 uint16_t pos = 0; 1537 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1538 event[pos++] = event_size; 1539 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1540 offset += 8; 1541 pos += 8; 1542 event[pos++] = packet[offset + 1 + data_length]; // rssi 1543 event[pos++] = data_length; 1544 offset++; 1545 (void)memcpy(&event[pos], &packet[offset], data_length); 1546 pos += data_length; 1547 offset += data_length + 1u; // rssi 1548 hci_emit_event(event, pos, 1); 1549 } 1550 } 1551 1552 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1553 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1554 uint16_t offset = 3; 1555 uint8_t num_reports = packet[offset++]; 1556 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1557 uint8_t i; 1558 for (i=0; (i<num_reports) && (offset < size);i++){ 1559 // sanity checks on data_length: 1560 uint16_t data_length = packet[offset + 23]; 1561 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1562 if ((offset + 24u + data_length) > size) return; 1563 uint16_t event_type = little_endian_read_16(packet, offset); 1564 offset += 2; 1565 if ((event_type & 0x10) != 0) { 1566 // setup legacy event 1567 uint8_t legacy_event_type; 1568 switch (event_type){ 1569 case 0b0010011: 1570 // ADV_IND 1571 legacy_event_type = 0; 1572 break; 1573 case 0b0010101: 1574 // ADV_DIRECT_IND 1575 legacy_event_type = 1; 1576 break; 1577 case 0b0010010: 1578 // ADV_SCAN_IND 1579 legacy_event_type = 2; 1580 break; 1581 case 0b0010000: 1582 // ADV_NONCONN_IND 1583 legacy_event_type = 3; 1584 break; 1585 case 0b0011011: 1586 case 0b0011010: 1587 // SCAN_RSP 1588 legacy_event_type = 4; 1589 break; 1590 default: 1591 legacy_event_type = 0; 1592 break; 1593 } 1594 uint16_t pos = 0; 1595 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1596 event[pos++] = 10u + data_length; 1597 event[pos++] = legacy_event_type; 1598 // copy address type + address 1599 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1600 offset += 7; 1601 pos += 7; 1602 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1603 offset += 4; 1604 // copy rssi 1605 event[pos++] = packet[offset++]; 1606 // skip periodic advertising interval and direct address 1607 offset += 9; 1608 // copy data len + data; 1609 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1610 pos += 1 +data_length; 1611 offset += 1+ data_length; 1612 hci_emit_event(event, pos, 1); 1613 } else { 1614 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1615 uint8_t report_len = 24 + data_length; 1616 event[1] = report_len; 1617 little_endian_store_16(event, 2, event_type); 1618 memcpy(&event[4], &packet[offset], report_len); 1619 offset += report_len; 1620 hci_emit_event(event, 2 + report_len, 1); 1621 } 1622 } 1623 } 1624 #endif 1625 1626 #endif 1627 #endif 1628 1629 #ifdef ENABLE_BLE 1630 #ifdef ENABLE_LE_PERIPHERAL 1631 static void hci_update_advertisements_enabled_for_current_roles(void){ 1632 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1633 // get number of active le slave connections 1634 int num_slave_connections = 0; 1635 btstack_linked_list_iterator_t it; 1636 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1637 while (btstack_linked_list_iterator_has_next(&it)){ 1638 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1639 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1640 if (con->state != OPEN) continue; 1641 if (con->role != HCI_ROLE_SLAVE) continue; 1642 if (!hci_is_le_connection(con)) continue; 1643 num_slave_connections++; 1644 } 1645 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1646 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1647 } else { 1648 hci_stack->le_advertisements_enabled_for_current_roles = false; 1649 } 1650 } 1651 #endif 1652 #endif 1653 1654 #ifdef ENABLE_CLASSIC 1655 static void gap_run_set_local_name(void){ 1656 hci_reserve_packet_buffer(); 1657 uint8_t * packet = hci_stack->hci_packet_buffer; 1658 // construct HCI Command and send 1659 uint16_t opcode = hci_write_local_name.opcode; 1660 hci_stack->last_cmd_opcode = opcode; 1661 packet[0] = opcode & 0xff; 1662 packet[1] = opcode >> 8; 1663 packet[2] = DEVICE_NAME_LEN; 1664 memset(&packet[3], 0, DEVICE_NAME_LEN); 1665 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1666 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1667 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1668 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1669 // expand '00:00:00:00:00:00' in name with bd_addr 1670 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1671 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1672 } 1673 1674 static void gap_run_set_eir_data(void){ 1675 hci_reserve_packet_buffer(); 1676 uint8_t * packet = hci_stack->hci_packet_buffer; 1677 // construct HCI Command in-place and send 1678 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1679 hci_stack->last_cmd_opcode = opcode; 1680 uint16_t offset = 0; 1681 packet[offset++] = opcode & 0xff; 1682 packet[offset++] = opcode >> 8; 1683 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1684 packet[offset++] = 0; // FEC not required 1685 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1686 if (hci_stack->eir_data){ 1687 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1688 ad_context_t context; 1689 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1690 uint8_t data_type = ad_iterator_get_data_type(&context); 1691 uint8_t size = ad_iterator_get_data_len(&context); 1692 const uint8_t *data = ad_iterator_get_data(&context); 1693 // copy item 1694 packet[offset++] = size + 1; 1695 packet[offset++] = data_type; 1696 memcpy(&packet[offset], data, size); 1697 // update name item 1698 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1699 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1700 } 1701 offset += size; 1702 } 1703 } else { 1704 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1705 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1706 packet[offset++] = bytes_to_copy + 1; 1707 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1708 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1709 // expand '00:00:00:00:00:00' in name with bd_addr 1710 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1711 } 1712 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1713 } 1714 1715 static void hci_run_gap_tasks_classic(void){ 1716 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1717 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1718 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1719 return; 1720 } 1721 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1722 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1723 gap_run_set_local_name(); 1724 return; 1725 } 1726 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1727 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1728 gap_run_set_eir_data(); 1729 return; 1730 } 1731 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1732 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1733 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1734 return; 1735 } 1736 // write page scan activity 1737 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1738 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1739 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1740 return; 1741 } 1742 // write page scan type 1743 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1744 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1745 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1746 return; 1747 } 1748 // write page timeout 1749 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1750 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1751 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1752 return; 1753 } 1754 // send scan enable 1755 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1756 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1757 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1758 return; 1759 } 1760 // send write scan activity 1761 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1762 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1763 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1764 return; 1765 } 1766 // send write inquiry transmit power level 1767 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1768 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1769 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1770 return; 1771 } 1772 } 1773 #endif 1774 1775 #ifndef HAVE_HOST_CONTROLLER_API 1776 1777 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1778 if (!hci_stack->config) return 0; 1779 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1780 // Limit baud rate for Broadcom chipsets to 3 mbps 1781 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1782 baud_rate = 3000000; 1783 } 1784 return baud_rate; 1785 } 1786 1787 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1788 UNUSED(ds); 1789 1790 switch (hci_stack->substate){ 1791 case HCI_INIT_W4_SEND_RESET: 1792 log_info("Resend HCI Reset"); 1793 hci_stack->substate = HCI_INIT_SEND_RESET; 1794 hci_stack->num_cmd_packets = 1; 1795 hci_run(); 1796 break; 1797 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1798 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1799 if (hci_stack->hci_transport->reset_link){ 1800 hci_stack->hci_transport->reset_link(); 1801 } 1802 1803 /* fall through */ 1804 1805 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1806 log_info("Resend HCI Reset - CSR Warm Boot"); 1807 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1808 hci_stack->num_cmd_packets = 1; 1809 hci_run(); 1810 break; 1811 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1812 if (hci_stack->hci_transport->set_baudrate){ 1813 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1814 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1815 hci_stack->hci_transport->set_baudrate(baud_rate); 1816 } 1817 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1818 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1819 if (hci_stack->hci_transport->reset_link){ 1820 log_info("Link Reset"); 1821 hci_stack->hci_transport->reset_link(); 1822 } 1823 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1824 hci_run(); 1825 } 1826 break; 1827 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1828 // otherwise continue 1829 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1830 hci_send_cmd(&hci_read_local_supported_commands); 1831 break; 1832 default: 1833 break; 1834 } 1835 } 1836 #endif 1837 1838 static void hci_initializing_next_state(void){ 1839 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1840 } 1841 1842 static void hci_init_done(void){ 1843 // done. tell the app 1844 log_info("hci_init_done -> HCI_STATE_WORKING"); 1845 hci_stack->state = HCI_STATE_WORKING; 1846 hci_emit_state(); 1847 } 1848 1849 // assumption: hci_can_send_command_packet_now() == true 1850 static void hci_initializing_run(void){ 1851 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1852 1853 if (!hci_can_send_command_packet_now()) return; 1854 1855 #ifndef HAVE_HOST_CONTROLLER_API 1856 bool need_baud_change = hci_stack->config 1857 && hci_stack->chipset 1858 && hci_stack->chipset->set_baudrate_command 1859 && hci_stack->hci_transport->set_baudrate 1860 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1861 #endif 1862 1863 switch (hci_stack->substate){ 1864 case HCI_INIT_SEND_RESET: 1865 hci_state_reset(); 1866 1867 #ifndef HAVE_HOST_CONTROLLER_API 1868 // prepare reset if command complete not received in 100ms 1869 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1870 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1871 btstack_run_loop_add_timer(&hci_stack->timeout); 1872 #endif 1873 // send command 1874 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1875 hci_send_cmd(&hci_reset); 1876 break; 1877 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1878 hci_send_cmd(&hci_read_local_version_information); 1879 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1880 break; 1881 1882 #ifndef HAVE_HOST_CONTROLLER_API 1883 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1884 hci_state_reset(); 1885 // prepare reset if command complete not received in 100ms 1886 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1887 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1888 btstack_run_loop_add_timer(&hci_stack->timeout); 1889 // send command 1890 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1891 hci_send_cmd(&hci_reset); 1892 break; 1893 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1894 hci_state_reset(); 1895 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1896 hci_send_cmd(&hci_reset); 1897 break; 1898 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1899 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1900 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1901 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1902 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1903 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1904 break; 1905 } 1906 case HCI_INIT_SET_BD_ADDR: 1907 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1908 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1909 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1910 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1911 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1912 break; 1913 case HCI_INIT_SEND_READ_LOCAL_NAME: 1914 #ifdef ENABLE_CLASSIC 1915 hci_send_cmd(&hci_read_local_name); 1916 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1917 break; 1918 #endif 1919 /* fall through */ 1920 1921 case HCI_INIT_SEND_BAUD_CHANGE: 1922 if (need_baud_change) { 1923 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1924 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1925 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1926 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1927 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1928 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1929 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1930 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1931 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1932 btstack_run_loop_add_timer(&hci_stack->timeout); 1933 } 1934 break; 1935 } 1936 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1937 1938 /* fall through */ 1939 1940 case HCI_INIT_CUSTOM_INIT: 1941 case HCI_INIT_CUSTOM_PRE_INIT: 1942 // Custom initialization 1943 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1944 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1945 bool send_cmd = false; 1946 switch (hci_stack->chipset_result){ 1947 case BTSTACK_CHIPSET_VALID_COMMAND: 1948 send_cmd = true; 1949 switch (hci_stack->substate){ 1950 case HCI_INIT_CUSTOM_INIT: 1951 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1952 break; 1953 case HCI_INIT_CUSTOM_PRE_INIT: 1954 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1955 break; 1956 default: 1957 btstack_assert(false); 1958 break; 1959 } 1960 break; 1961 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1962 send_cmd = true; 1963 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1964 log_info("CSR Warm Boot"); 1965 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1966 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1967 btstack_run_loop_add_timer(&hci_stack->timeout); 1968 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1969 && hci_stack->config 1970 && hci_stack->chipset 1971 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1972 && hci_stack->hci_transport->set_baudrate 1973 && hci_transport_uart_get_main_baud_rate()){ 1974 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1975 } else { 1976 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1977 } 1978 break; 1979 default: 1980 break; 1981 } 1982 1983 if (send_cmd){ 1984 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1985 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1986 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1987 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1988 break; 1989 } 1990 log_info("Init script done"); 1991 1992 // Custom Pre-Init complete, start regular init with HCI Reset 1993 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1994 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1995 hci_send_cmd(&hci_reset); 1996 break; 1997 } 1998 1999 // Init script download on Broadcom chipsets causes: 2000 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2001 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2002 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2003 2004 // - baud rate to reset, restore UART baud rate if needed 2005 if (need_baud_change) { 2006 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2007 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2008 hci_stack->hci_transport->set_baudrate(baud_rate); 2009 } 2010 2011 uint16_t bcm_delay_ms = 300; 2012 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2013 // -> Work around: wait here. 2014 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2015 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2016 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2017 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2018 btstack_run_loop_add_timer(&hci_stack->timeout); 2019 break; 2020 } 2021 } 2022 #endif 2023 /* fall through */ 2024 2025 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2026 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2027 hci_send_cmd(&hci_read_local_supported_commands); 2028 break; 2029 case HCI_INIT_READ_BD_ADDR: 2030 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2031 hci_send_cmd(&hci_read_bd_addr); 2032 break; 2033 case HCI_INIT_READ_BUFFER_SIZE: 2034 // only read buffer size if supported 2035 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2036 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2037 hci_send_cmd(&hci_read_buffer_size); 2038 break; 2039 } 2040 2041 /* fall through */ 2042 2043 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2044 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2045 hci_send_cmd(&hci_read_local_supported_features); 2046 break; 2047 2048 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2049 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2050 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2051 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2052 break; 2053 case HCI_INIT_HOST_BUFFER_SIZE: 2054 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2055 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2056 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2057 break; 2058 #endif 2059 2060 case HCI_INIT_SET_EVENT_MASK: 2061 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2062 if (hci_le_supported()){ 2063 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2064 } else { 2065 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2066 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2067 } 2068 break; 2069 2070 case HCI_INIT_SET_EVENT_MASK_2: 2071 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2072 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2073 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2074 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2075 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2076 // Encryption Change Event v2 - bit 25 2077 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2078 break; 2079 } 2080 2081 #ifdef ENABLE_CLASSIC 2082 /* fall through */ 2083 2084 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2085 if (hci_classic_supported() && gap_ssp_supported()){ 2086 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2087 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2088 break; 2089 } 2090 2091 /* fall through */ 2092 2093 case HCI_INIT_WRITE_INQUIRY_MODE: 2094 if (hci_classic_supported()){ 2095 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2096 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2097 break; 2098 } 2099 2100 /* fall through */ 2101 2102 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2103 // skip write secure connections host support if not supported or disabled 2104 if (hci_classic_supported() && hci_stack->secure_connections_enable 2105 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2106 hci_stack->secure_connections_active = true; 2107 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2108 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2109 break; 2110 } 2111 2112 /* fall through */ 2113 2114 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2115 // skip set min encryption key size 2116 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2117 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2118 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2119 break; 2120 } 2121 2122 #ifdef ENABLE_SCO_OVER_HCI 2123 /* fall through */ 2124 2125 // only sent if ENABLE_SCO_OVER_HCI is defined 2126 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2127 // skip write synchronous flow control if not supported 2128 if (hci_classic_supported() 2129 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2130 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2131 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2132 break; 2133 } 2134 /* fall through */ 2135 2136 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2137 // skip write default erroneous data reporting if not supported 2138 if (hci_classic_supported() 2139 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2140 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2141 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2142 break; 2143 } 2144 #endif 2145 2146 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2147 /* fall through */ 2148 2149 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2150 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2151 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2152 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2153 #ifdef ENABLE_SCO_OVER_HCI 2154 log_info("BCM: Route SCO data via HCI transport"); 2155 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2156 #endif 2157 #ifdef ENABLE_SCO_OVER_PCM 2158 log_info("BCM: Route SCO data via PCM interface"); 2159 #ifdef ENABLE_BCM_PCM_WBS 2160 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2161 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2162 #else 2163 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2164 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2165 #endif 2166 #endif 2167 break; 2168 } 2169 #endif 2170 2171 #ifdef ENABLE_SCO_OVER_PCM 2172 /* fall through */ 2173 2174 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2175 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2176 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2177 log_info("BCM: Config PCM interface for I2S"); 2178 #ifdef ENABLE_BCM_PCM_WBS 2179 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2180 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2181 #else 2182 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2183 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2184 #endif 2185 break; 2186 } 2187 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2188 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2189 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2190 log_info("BCM: Config PCM Data format"); 2191 // msb first, fill bits 0, left justified 2192 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2193 break; 2194 } 2195 #ifdef HAVE_BCM_PCM2 2196 case HCI_INIT_BCM_PCM2_SETUP: 2197 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2198 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2199 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2200 uint32_t pcm_clock_freq; 2201 uint8_t ch_0_period; 2202 #ifdef ENABLE_BCM_PCM_WBS 2203 // 512 kHz, resample 8 kHz to 16 khz 2204 pcm_clock_freq = 512000; 2205 ch_0_period = 1; 2206 #else 2207 // 256 khz, 8 khz output 2208 pcm_clock_freq = 256000; 2209 ch_0_period = 0; 2210 #endif 2211 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2212 hci_send_cmd(&hci_bcm_pcm2_setup, 2213 0x00, // Action = Write 2214 0x00, // Test_Options = None 2215 op_mode, // Op_Mode 2216 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2217 pcm_clock_freq, // PCM_Clock_Freq 2218 0x01, // Sync_Signal_Width 2219 0x0F, // Slot_Width 2220 0x01, // NumberOfSlots 2221 0x00, // Bank_0_Fill_Mode = 0s 2222 0x00, // Bank_0_Number_of_Fill_Bits 2223 0x00, // Bank_0_Programmable_Fill_Data 2224 0x00, // Bank_1_Fill_Mode = 0s 2225 0x00, // Bank_1_Number_of_Fill_Bits 2226 0x00, // Bank_1_Programmable_Fill_Data 2227 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2228 0x00, // Ch_0_Slot_Number 2229 0x01, // Ch_1_Slot_Number 2230 0x02, // Ch_2_Slot_Number 2231 0x03, // Ch_3_Slot_Number 2232 0x04, // Ch_4_Slot_Number 2233 ch_0_period, // Ch_0_Period 2234 0x00, // Ch_1_Period 2235 0x00 // Ch_2_Period 2236 ); 2237 break; 2238 } 2239 #endif 2240 #endif /* ENABLE_SCO_OVER_PCM */ 2241 #endif /* ENABLE_CLASSIC */ 2242 2243 #ifdef ENABLE_BLE 2244 /* fall through */ 2245 2246 // LE INIT 2247 case HCI_INIT_LE_READ_BUFFER_SIZE: 2248 if (hci_le_supported()){ 2249 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2250 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2251 hci_send_cmd(&hci_le_read_buffer_size_v2); 2252 } else { 2253 hci_send_cmd(&hci_le_read_buffer_size); 2254 } 2255 break; 2256 } 2257 2258 /* fall through */ 2259 2260 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2261 // skip write le host if not supported (e.g. on LE only EM9301) 2262 if (hci_le_supported() 2263 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2264 // LE Supported Host = 1, Simultaneous Host = 0 2265 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2266 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2267 break; 2268 } 2269 2270 /* fall through */ 2271 2272 case HCI_INIT_LE_SET_EVENT_MASK: 2273 if (hci_le_supported()){ 2274 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2275 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2276 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2277 #else 2278 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2279 #endif 2280 break; 2281 } 2282 #endif 2283 2284 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2285 /* fall through */ 2286 2287 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2288 if (hci_le_supported() 2289 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2290 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2291 hci_send_cmd(&hci_le_read_maximum_data_length); 2292 break; 2293 } 2294 2295 /* fall through */ 2296 2297 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2298 if (hci_le_supported() 2299 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2300 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2301 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2302 break; 2303 } 2304 #endif 2305 2306 #ifdef ENABLE_LE_CENTRAL 2307 /* fall through */ 2308 2309 case HCI_INIT_READ_WHITE_LIST_SIZE: 2310 if (hci_le_supported()){ 2311 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2312 hci_send_cmd(&hci_le_read_white_list_size); 2313 break; 2314 } 2315 2316 #endif 2317 2318 #ifdef ENABLE_LE_PERIPHERAL 2319 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2320 /* fall through */ 2321 2322 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2323 if (hci_extended_advertising_supported()){ 2324 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2325 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2326 break; 2327 } 2328 #endif 2329 #endif 2330 /* fall through */ 2331 2332 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2333 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2334 if (hci_le_supported()) { 2335 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2336 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2337 break; 2338 } 2339 #endif 2340 2341 /* fall through */ 2342 2343 case HCI_INIT_DONE: 2344 hci_stack->substate = HCI_INIT_DONE; 2345 // main init sequence complete 2346 #ifdef ENABLE_CLASSIC 2347 // check if initial Classic GAP Tasks are completed 2348 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2349 hci_run_gap_tasks_classic(); 2350 break; 2351 } 2352 #endif 2353 #ifdef ENABLE_BLE 2354 #ifdef ENABLE_LE_CENTRAL 2355 // check if initial LE GAP Tasks are completed 2356 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2357 hci_run_general_gap_le(); 2358 break; 2359 } 2360 #endif 2361 #endif 2362 hci_init_done(); 2363 break; 2364 2365 default: 2366 return; 2367 } 2368 } 2369 2370 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2371 bool command_completed = false; 2372 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2373 uint16_t opcode = little_endian_read_16(packet,3); 2374 if (opcode == hci_stack->last_cmd_opcode){ 2375 command_completed = true; 2376 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2377 } else { 2378 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2379 } 2380 } 2381 2382 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2383 uint8_t status = packet[2]; 2384 uint16_t opcode = little_endian_read_16(packet,4); 2385 if (opcode == hci_stack->last_cmd_opcode){ 2386 if (status){ 2387 command_completed = true; 2388 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2389 } else { 2390 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2391 } 2392 } else { 2393 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2394 } 2395 } 2396 #ifndef HAVE_HOST_CONTROLLER_API 2397 // Vendor == CSR 2398 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2399 // TODO: track actual command 2400 command_completed = true; 2401 } 2402 2403 // Vendor == Toshiba 2404 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2405 // TODO: track actual command 2406 command_completed = true; 2407 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2408 hci_stack->num_cmd_packets = 1; 2409 } 2410 #endif 2411 2412 return command_completed; 2413 } 2414 2415 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2416 2417 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2418 2419 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2420 2421 #ifndef HAVE_HOST_CONTROLLER_API 2422 2423 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2424 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2425 // 2426 // HCI Reset 2427 // Timeout 100 ms 2428 // HCI Reset 2429 // Command Complete Reset 2430 // HCI Read Local Version Information 2431 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2432 // hang... 2433 // 2434 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2435 if (!command_completed 2436 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2437 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2438 2439 uint16_t opcode = little_endian_read_16(packet,3); 2440 if (opcode == hci_reset.opcode){ 2441 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2442 return; 2443 } 2444 } 2445 2446 // CSR & H5 2447 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2448 if (!command_completed 2449 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2450 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2451 2452 uint16_t opcode = little_endian_read_16(packet,3); 2453 if (opcode == hci_reset.opcode){ 2454 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2455 return; 2456 } 2457 } 2458 2459 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2460 // fix: Correct substate and behave as command below 2461 if (command_completed){ 2462 switch (hci_stack->substate){ 2463 case HCI_INIT_SEND_RESET: 2464 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2465 break; 2466 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2467 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2468 break; 2469 default: 2470 break; 2471 } 2472 } 2473 2474 #endif 2475 2476 if (!command_completed) return; 2477 2478 bool need_baud_change = false; 2479 bool need_addr_change = false; 2480 2481 #ifndef HAVE_HOST_CONTROLLER_API 2482 need_baud_change = hci_stack->config 2483 && hci_stack->chipset 2484 && hci_stack->chipset->set_baudrate_command 2485 && hci_stack->hci_transport->set_baudrate 2486 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2487 2488 need_addr_change = hci_stack->custom_bd_addr_set 2489 && hci_stack->chipset 2490 && hci_stack->chipset->set_bd_addr_command; 2491 #endif 2492 2493 switch(hci_stack->substate){ 2494 2495 #ifndef HAVE_HOST_CONTROLLER_API 2496 case HCI_INIT_SEND_RESET: 2497 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2498 // fix: just correct substate and behave as command below 2499 2500 /* fall through */ 2501 #endif 2502 2503 case HCI_INIT_W4_SEND_RESET: 2504 btstack_run_loop_remove_timer(&hci_stack->timeout); 2505 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2506 return; 2507 2508 #ifndef HAVE_HOST_CONTROLLER_API 2509 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2510 // for STLC2500D, baud rate change already happened. 2511 // for others, baud rate gets changed now 2512 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2513 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2514 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2515 hci_stack->hci_transport->set_baudrate(baud_rate); 2516 } 2517 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2518 return; 2519 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2520 btstack_run_loop_remove_timer(&hci_stack->timeout); 2521 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2522 return; 2523 case HCI_INIT_W4_CUSTOM_INIT: 2524 // repeat custom init 2525 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2526 return; 2527 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2528 // repeat custom init 2529 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2530 return; 2531 #endif 2532 2533 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2534 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2535 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2536 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2537 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2538 return; 2539 } 2540 if (need_addr_change){ 2541 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2542 return; 2543 } 2544 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2545 return; 2546 #ifndef HAVE_HOST_CONTROLLER_API 2547 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2548 if (need_baud_change){ 2549 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2550 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2551 hci_stack->hci_transport->set_baudrate(baud_rate); 2552 } 2553 if (need_addr_change){ 2554 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2555 return; 2556 } 2557 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2558 return; 2559 case HCI_INIT_W4_SET_BD_ADDR: 2560 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2561 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2562 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2563 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2564 return; 2565 } 2566 // skipping st warm boot 2567 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2568 return; 2569 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2570 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2571 return; 2572 #endif 2573 2574 case HCI_INIT_DONE: 2575 // set state if we came here by fall through 2576 hci_stack->substate = HCI_INIT_DONE; 2577 return; 2578 2579 default: 2580 break; 2581 } 2582 hci_initializing_next_state(); 2583 } 2584 2585 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2586 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2587 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2588 // check if we have been aware of the HCI connection 2589 switch (conn->state){ 2590 case SENT_CREATE_CONNECTION: 2591 case RECEIVED_CONNECTION_REQUEST: 2592 case ACCEPTED_CONNECTION_REQUEST: 2593 break; 2594 default: 2595 return; 2596 } 2597 2598 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2599 bd_addr_t bd_address; 2600 (void)memcpy(&bd_address, conn->address, 6); 2601 2602 #ifdef ENABLE_CLASSIC 2603 // cache needed data 2604 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2605 #endif 2606 2607 // connection failed, remove entry 2608 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2609 btstack_memory_hci_connection_free( conn ); 2610 2611 #ifdef ENABLE_CLASSIC 2612 // notify client if dedicated bonding 2613 if (notify_dedicated_bonding_failed){ 2614 log_info("hci notify_dedicated_bonding_failed"); 2615 hci_emit_dedicated_bonding_result(bd_address, status); 2616 } 2617 2618 // if authentication error, also delete link key 2619 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2620 gap_drop_link_key_for_bd_addr(bd_address); 2621 } 2622 #else 2623 UNUSED(status); 2624 #endif 2625 } 2626 2627 #ifdef ENABLE_CLASSIC 2628 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2629 // SSP Controller 2630 if (features[6] & (1 << 3)){ 2631 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2632 } 2633 // eSCO 2634 if (features[3] & (1<<7)){ 2635 conn->remote_supported_features[0] |= 1; 2636 } 2637 // Extended features 2638 if (features[7] & (1<<7)){ 2639 conn->remote_supported_features[0] |= 2; 2640 } 2641 // SCO packet types 2642 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2643 } 2644 2645 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2646 // SSP Host 2647 if (features[0] & (1 << 0)){ 2648 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2649 } 2650 // SC Host 2651 if (features[0] & (1 << 3)){ 2652 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2653 } 2654 } 2655 2656 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2657 // SC Controller 2658 if (features[1] & (1 << 0)){ 2659 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2660 } 2661 } 2662 2663 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2664 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2665 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2666 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2667 if (conn->bonding_flags & BONDING_DEDICATED){ 2668 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2669 } 2670 } 2671 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2672 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2673 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2674 } 2675 2676 #endif 2677 2678 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2679 // handle BT initialization 2680 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2681 hci_initializing_event_handler(packet, size); 2682 } 2683 2684 // help with BT sleep 2685 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2686 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2687 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2688 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2689 hci_initializing_next_state(); 2690 } 2691 } 2692 2693 #ifdef ENABLE_CLASSIC 2694 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2695 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2696 conn->requested_security_level = LEVEL_0; 2697 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2698 hci_emit_security_level(conn->con_handle, security_level); 2699 2700 // dedicated bonding 2701 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2702 conn->bonding_flags &= ~BONDING_DEDICATED; 2703 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2704 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2705 // emit dedicated bonding complete, don't disconnect 2706 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2707 #else 2708 // request disconnect, event is emitted after disconnect 2709 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2710 #endif 2711 } 2712 } 2713 2714 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2715 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2716 conn->encryption_key_size = encryption_key_size; 2717 2718 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2719 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2720 hci_handle_mutual_authentication_completed(conn); 2721 } else { 2722 // otherwise trigger remote feature request and send authentication request 2723 hci_trigger_remote_features_for_connection(conn); 2724 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2725 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2726 } 2727 } 2728 } 2729 #endif 2730 2731 static void hci_store_local_supported_commands(const uint8_t * packet){ 2732 // create mapping table 2733 #define X(name, offset, bit) { offset, bit }, 2734 static struct { 2735 uint8_t byte_offset; 2736 uint8_t bit_position; 2737 } supported_hci_commands_map [] = { 2738 SUPPORTED_HCI_COMMANDS 2739 }; 2740 #undef X 2741 2742 // create names for debug purposes 2743 #ifdef ENABLE_LOG_DEBUG 2744 #define X(name, offset, bit) #name, 2745 static const char * command_names[] = { 2746 SUPPORTED_HCI_COMMANDS 2747 }; 2748 #undef X 2749 #endif 2750 2751 hci_stack->local_supported_commands = 0; 2752 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2753 uint16_t i; 2754 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2755 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2756 #ifdef ENABLE_LOG_DEBUG 2757 log_info("Command %s (%u) supported %u/%u", command_names[i], i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2758 #else 2759 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2760 #endif 2761 hci_stack->local_supported_commands |= (1LU << i); 2762 } 2763 } 2764 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2765 } 2766 2767 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2768 UNUSED(size); 2769 2770 uint8_t status = 0; 2771 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2772 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2773 } 2774 uint16_t manufacturer; 2775 #ifdef ENABLE_CLASSIC 2776 hci_connection_t * conn; 2777 #endif 2778 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2779 hci_con_handle_t handle; 2780 #endif 2781 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2782 le_audio_cig_t * cig; 2783 #endif 2784 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2785 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2786 #endif 2787 2788 // get num cmd packets - limit to 1 to reduce complexity 2789 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2790 2791 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2792 switch (opcode){ 2793 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2794 if (status) break; 2795 // terminate, name 248 chars 2796 packet[6+248] = 0; 2797 log_info("local name: %s", &packet[6]); 2798 break; 2799 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2800 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2801 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2802 uint16_t acl_len = little_endian_read_16(packet, 6); 2803 uint16_t sco_len = packet[8]; 2804 2805 // determine usable ACL/SCO payload size 2806 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2807 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2808 2809 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2810 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2811 2812 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2813 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2814 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2815 } 2816 break; 2817 case HCI_OPCODE_HCI_READ_RSSI: 2818 if (status == ERROR_CODE_SUCCESS){ 2819 uint8_t event[5]; 2820 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2821 event[1] = 3; 2822 (void)memcpy(&event[2], &packet[6], 3); 2823 hci_emit_event(event, sizeof(event), 1); 2824 } 2825 break; 2826 #ifdef ENABLE_BLE 2827 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2828 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2829 hci_stack->le_iso_packets_total_num = packet[11]; 2830 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2831 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2832 2833 /* fall through */ 2834 2835 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2836 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2837 hci_stack->le_acl_packets_total_num = packet[8]; 2838 // determine usable ACL payload size 2839 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2840 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2841 } 2842 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); 2843 break; 2844 #endif 2845 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2846 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2847 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2848 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2849 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); 2850 break; 2851 #endif 2852 #ifdef ENABLE_LE_CENTRAL 2853 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2854 hci_stack->le_whitelist_capacity = packet[6]; 2855 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2856 break; 2857 #endif 2858 #ifdef ENABLE_LE_PERIPHERAL 2859 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2860 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2861 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2862 break; 2863 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2864 if (hci_stack->le_advertising_set_in_current_command != 0) { 2865 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2866 hci_stack->le_advertising_set_in_current_command = 0; 2867 if (advertising_set == NULL) break; 2868 uint8_t adv_status = packet[6]; 2869 uint8_t tx_power = packet[7]; 2870 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 }; 2871 if (adv_status == 0){ 2872 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2873 } 2874 hci_emit_event(event, sizeof(event), 1); 2875 } 2876 break; 2877 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2878 if (hci_stack->le_advertising_set_in_current_command != 0) { 2879 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2880 hci_stack->le_advertising_set_in_current_command = 0; 2881 if (advertising_set == NULL) break; 2882 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2883 if (status == 0){ 2884 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2885 } 2886 hci_emit_event(event, sizeof(event), 1); 2887 } 2888 break; 2889 #endif 2890 #endif 2891 case HCI_OPCODE_HCI_READ_BD_ADDR: 2892 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2893 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2894 #ifdef ENABLE_CLASSIC 2895 if (hci_stack->link_key_db){ 2896 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2897 } 2898 #endif 2899 break; 2900 #ifdef ENABLE_CLASSIC 2901 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2902 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2903 break; 2904 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2905 if (status == ERROR_CODE_SUCCESS) { 2906 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2907 } else { 2908 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2909 } 2910 break; 2911 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2912 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2913 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2914 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2915 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2916 hci_emit_event(event, sizeof(event), 1); 2917 } 2918 break; 2919 #endif 2920 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2921 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2922 2923 #ifdef ENABLE_CLASSIC 2924 // determine usable ACL packet types based on host buffer size and supported features 2925 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]); 2926 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2927 // determine usable SCO packet types based on supported features 2928 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2929 &hci_stack->local_supported_features[0]); 2930 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2931 #endif 2932 // Classic/LE 2933 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2934 break; 2935 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2936 manufacturer = little_endian_read_16(packet, 10); 2937 // map Cypress & Infineon to Broadcom 2938 switch (manufacturer){ 2939 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2940 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2941 log_info("Treat Cypress/Infineon as Broadcom"); 2942 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2943 little_endian_store_16(packet, 10, manufacturer); 2944 break; 2945 default: 2946 break; 2947 } 2948 hci_stack->manufacturer = manufacturer; 2949 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2950 break; 2951 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2952 hci_store_local_supported_commands(packet); 2953 break; 2954 #ifdef ENABLE_CLASSIC 2955 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2956 if (status) return; 2957 hci_stack->synchronous_flow_control_enabled = 1; 2958 break; 2959 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2960 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2961 conn = hci_connection_for_handle(handle); 2962 if (conn != NULL) { 2963 uint8_t key_size = 0; 2964 if (status == 0){ 2965 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2966 log_info("Handle %04x key Size: %u", handle, key_size); 2967 } else { 2968 key_size = 1; 2969 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2970 } 2971 hci_handle_read_encryption_key_size_complete(conn, key_size); 2972 } 2973 break; 2974 // assert pairing complete event is emitted. 2975 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2976 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2977 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2978 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2979 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2980 // lookup connection by gap pairing addr 2981 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2982 if (conn == NULL) break; 2983 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2984 break; 2985 2986 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2987 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2988 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2989 uint8_t event[67]; 2990 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2991 event[1] = 65; 2992 (void)memset(&event[2], 0, 65); 2993 if (status == ERROR_CODE_SUCCESS){ 2994 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2995 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2996 event[2] = 3; 2997 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2998 } else { 2999 event[2] = 1; 3000 } 3001 } 3002 hci_emit_event(event, sizeof(event), 0); 3003 break; 3004 } 3005 3006 // note: only needed if user does not provide OOB data 3007 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3008 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3009 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3010 if (conn == NULL) break; 3011 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3012 break; 3013 #endif 3014 #endif 3015 #ifdef ENABLE_BLE 3016 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3017 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3018 // lookup CIG 3019 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3020 if (cig != NULL){ 3021 uint8_t i = 0; 3022 if (status == ERROR_CODE_SUCCESS){ 3023 // assign CIS handles to pre-allocated CIS 3024 btstack_linked_list_iterator_t it; 3025 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3026 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3027 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3028 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3029 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3030 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3031 iso_stream->cis_handle = cis_handle; 3032 cig->cis_con_handles[i] = cis_handle; 3033 i++; 3034 } 3035 } 3036 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3037 hci_emit_cig_created(cig, status); 3038 } else { 3039 hci_emit_cig_created(cig, status); 3040 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3041 } 3042 } 3043 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3044 break; 3045 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3046 if (status != ERROR_CODE_SUCCESS){ 3047 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3048 } 3049 break; 3050 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3051 if (status != ERROR_CODE_SUCCESS){ 3052 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3053 } 3054 break; 3055 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3056 // lookup BIG by state 3057 btstack_linked_list_iterator_t it; 3058 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3059 while (btstack_linked_list_iterator_has_next(&it)) { 3060 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3061 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3062 if (status == ERROR_CODE_SUCCESS){ 3063 big->state_vars.next_bis++; 3064 if (big->state_vars.next_bis == big->num_bis){ 3065 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3066 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3067 } else { 3068 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3069 } 3070 } else { 3071 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3072 big->state_vars.status = status; 3073 } 3074 return; 3075 } 3076 } 3077 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3078 while (btstack_linked_list_iterator_has_next(&it)) { 3079 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3080 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3081 if (status == ERROR_CODE_SUCCESS){ 3082 big_sync->state_vars.next_bis++; 3083 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3084 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3085 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3086 } else { 3087 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3088 } 3089 } else { 3090 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3091 big_sync->state_vars.status = status; 3092 } 3093 return; 3094 } 3095 } 3096 // Lookup CIS via active group operation 3097 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3098 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3099 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3100 3101 // lookup CIS by state 3102 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3103 while (btstack_linked_list_iterator_has_next(&it)){ 3104 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3105 handle = iso_stream->cis_handle; 3106 bool emit_cis_created = false; 3107 switch (iso_stream->state){ 3108 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3109 if (status != ERROR_CODE_SUCCESS){ 3110 emit_cis_created = true; 3111 break; 3112 } 3113 if (iso_stream->max_sdu_c_to_p > 0){ 3114 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3115 } else { 3116 emit_cis_created = true; 3117 } 3118 break; 3119 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3120 emit_cis_created = true; 3121 break; 3122 default: 3123 break; 3124 } 3125 if (emit_cis_created){ 3126 hci_cis_handle_created(iso_stream, status); 3127 } 3128 } 3129 } else { 3130 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3131 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3132 if (cig != NULL) { 3133 // emit cis created if all ISO Paths have been created 3134 // assume we are central 3135 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3136 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3137 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3138 // if outgoing has been setup, or incoming was setup but outgoing not required 3139 if ((cis_direction == 1) || (outgoing_needed == false)){ 3140 // lookup iso stream by cig/cis 3141 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3142 while (btstack_linked_list_iterator_has_next(&it)) { 3143 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3144 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3145 hci_cis_handle_created(iso_stream, status); 3146 } 3147 } 3148 } 3149 // next state 3150 cig->state_vars.next_cis++; 3151 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3152 } 3153 } 3154 } 3155 break; 3156 } 3157 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3158 // lookup BIG by state 3159 btstack_linked_list_iterator_t it; 3160 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3161 while (btstack_linked_list_iterator_has_next(&it)) { 3162 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3163 uint8_t big_handle = big_sync->big_handle; 3164 switch (big_sync->state){ 3165 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3166 btstack_linked_list_iterator_remove(&it); 3167 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3168 return; 3169 default: 3170 btstack_linked_list_iterator_remove(&it); 3171 hci_emit_big_sync_stopped(big_handle); 3172 return; 3173 } 3174 } 3175 break; 3176 } 3177 #endif 3178 #endif 3179 default: 3180 break; 3181 } 3182 } 3183 3184 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3185 UNUSED(size); 3186 3187 // get num cmd packets - limit to 1 to reduce complexity 3188 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3189 3190 // get opcode and command status 3191 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3192 3193 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3194 uint8_t status = hci_event_command_status_get_status(packet); 3195 #endif 3196 3197 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3198 bd_addr_type_t addr_type; 3199 bd_addr_t addr; 3200 #endif 3201 3202 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3203 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3204 #endif 3205 3206 switch (opcode){ 3207 #ifdef ENABLE_CLASSIC 3208 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3209 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3210 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3211 #endif 3212 #ifdef ENABLE_LE_CENTRAL 3213 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3214 #endif 3215 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3216 addr_type = hci_stack->outgoing_addr_type; 3217 memcpy(addr, hci_stack->outgoing_addr, 6); 3218 3219 // reset outgoing address info 3220 memset(hci_stack->outgoing_addr, 0, 6); 3221 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3222 3223 // on error 3224 if (status != ERROR_CODE_SUCCESS){ 3225 #ifdef ENABLE_LE_CENTRAL 3226 if (hci_is_le_connection_type(addr_type)){ 3227 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3228 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3229 } 3230 #endif 3231 // error => outgoing connection failed 3232 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3233 if (conn != NULL){ 3234 hci_handle_connection_failed(conn, status); 3235 } 3236 } 3237 break; 3238 #endif 3239 #ifdef ENABLE_CLASSIC 3240 case HCI_OPCODE_HCI_INQUIRY: 3241 if (status == ERROR_CODE_SUCCESS) { 3242 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3243 } else { 3244 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3245 } 3246 break; 3247 #endif 3248 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3249 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3250 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3251 if (status == ERROR_CODE_SUCCESS){ 3252 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3253 } else { 3254 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3255 } 3256 break; 3257 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3258 default: 3259 break; 3260 } 3261 } 3262 3263 #ifdef ENABLE_BLE 3264 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3265 gap_event[0] = HCI_EVENT_META_GAP; 3266 gap_event[1] = 36 - 2; 3267 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3268 switch (hci_event[2]){ 3269 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3270 memcpy(&gap_event[3], &hci_event[3], 11); 3271 memset(&gap_event[14], 0, 12); 3272 memcpy(&gap_event[26], &hci_event[14], 7); 3273 memset(&gap_event[33], 0xff, 3); 3274 break; 3275 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3276 memcpy(&gap_event[3], &hci_event[3], 30); 3277 memset(&gap_event[33], 0xff, 3); 3278 break; 3279 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3280 memcpy(&gap_event[3], &hci_event[3], 33); 3281 break; 3282 default: 3283 btstack_unreachable(); 3284 break; 3285 } 3286 } 3287 3288 static void event_handle_le_connection_complete(const uint8_t * hci_event){ 3289 bd_addr_t addr; 3290 bd_addr_type_t addr_type; 3291 hci_connection_t * conn; 3292 3293 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3294 uint8_t gap_event[36]; 3295 hci_create_gap_connection_complete_event(hci_event, gap_event); 3296 3297 // read fields 3298 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3299 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3300 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3301 3302 // Connection management 3303 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3304 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3305 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3306 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3307 3308 #ifdef ENABLE_LE_CENTRAL 3309 // handle error: error is reported only to the initiator -> outgoing connection 3310 if (status){ 3311 3312 // handle cancelled outgoing connection 3313 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3314 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3315 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3316 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3317 // reset state 3318 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3319 // get outgoing connection conn struct for direct connect 3320 conn = gap_get_outgoing_connection(); 3321 } 3322 3323 // outgoing le connection establishment is done 3324 if (conn){ 3325 // remove entry 3326 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3327 btstack_memory_hci_connection_free( conn ); 3328 } 3329 return; 3330 } 3331 #endif 3332 3333 // on success, both hosts receive connection complete event 3334 if (role == HCI_ROLE_MASTER){ 3335 #ifdef ENABLE_LE_CENTRAL 3336 // if we're master on an le connection, it was an outgoing connection and we're done with it 3337 // note: no hci_connection_t object exists yet for connect with whitelist 3338 if (hci_is_le_connection_type(addr_type)){ 3339 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3340 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3341 } 3342 #endif 3343 } else { 3344 #ifdef ENABLE_LE_PERIPHERAL 3345 // if we're slave, it was an incoming connection, advertisements have stopped 3346 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3347 #endif 3348 } 3349 3350 // LE connections are auto-accepted, so just create a connection if there isn't one already 3351 if (!conn){ 3352 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3353 } 3354 3355 // no memory, sorry. 3356 if (!conn){ 3357 return; 3358 } 3359 3360 conn->state = OPEN; 3361 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3362 conn->le_connection_interval = conn_interval; 3363 3364 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3365 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3366 3367 #ifdef ENABLE_LE_PERIPHERAL 3368 if (role == HCI_ROLE_SLAVE){ 3369 hci_update_advertisements_enabled_for_current_roles(); 3370 } 3371 #endif 3372 3373 // init unenhanced att bearer mtu 3374 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3375 conn->att_connection.mtu_exchanged = false; 3376 3377 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3378 3379 // restart timer 3380 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3381 // btstack_run_loop_add_timer(&conn->timeout); 3382 3383 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3384 3385 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3386 hci_emit_event(gap_event, sizeof(gap_event), 1); 3387 3388 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3389 hci_emit_nr_connections_changed(); 3390 } 3391 #endif 3392 3393 #ifdef ENABLE_CLASSIC 3394 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){ 3395 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3396 // LEVEL_4 is tested by l2cap 3397 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3398 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3399 if (level >= LEVEL_3){ 3400 // MITM not possible without keyboard or display 3401 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3402 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3403 3404 // MITM possible if one side has keyboard and the other has keyboard or display 3405 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3406 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3407 3408 // MITM not possible if one side has only display and other side has no keyboard 3409 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3410 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3411 } 3412 // LEVEL 2 requires SSP, which is a given 3413 return true; 3414 } 3415 3416 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3417 // get requested security level 3418 gap_security_level_t requested_security_level = conn->requested_security_level; 3419 if (hci_stack->gap_secure_connections_only_mode){ 3420 requested_security_level = LEVEL_4; 3421 } 3422 3423 // assess security: LEVEL 4 requires SC 3424 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3425 if ((requested_security_level == LEVEL_4) && 3426 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3427 !hci_remote_sc_enabled(conn)){ 3428 log_info("Level 4 required, but SC not supported -> abort"); 3429 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3430 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3431 return; 3432 } 3433 3434 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3435 // - GAP/MOD/NBON/BV-02-C 3436 // - GAP/DM/NBON/BV-01-C 3437 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3438 switch (conn->io_cap_response_auth_req){ 3439 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3440 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3441 if (hci_stack->bondable == false){ 3442 log_info("Dedicated vs. non-bondable -> abort"); 3443 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3444 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3445 return; 3446 } 3447 default: 3448 break; 3449 } 3450 } 3451 3452 // assess security based on io capabilities 3453 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3454 // responder: fully validate io caps of both sides as well as OOB data 3455 bool security_possible = false; 3456 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3457 3458 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3459 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3460 // so we merge the OOB data availability 3461 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3462 if (conn->classic_oob_c_192 != NULL){ 3463 have_oob_data |= 1; 3464 } 3465 if (conn->classic_oob_c_256 != NULL){ 3466 have_oob_data |= 2; 3467 } 3468 // for up to Level 3, either P-192 as well as P-256 will do 3469 // 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 3470 // if remote does not SC, we should not receive P-256 data either 3471 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3472 security_possible = true; 3473 } 3474 // for Level 4, P-256 is needed 3475 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3476 security_possible = true; 3477 } 3478 #endif 3479 3480 if (security_possible == false){ 3481 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3482 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3483 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3484 return; 3485 } 3486 } else { 3487 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3488 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3489 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3490 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3491 log_info("Level 3+ required, but no input/output -> abort"); 3492 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3493 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3494 return; 3495 } 3496 #endif 3497 #endif 3498 } 3499 3500 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3501 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3502 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3503 } else { 3504 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3505 } 3506 #endif 3507 } 3508 3509 #endif 3510 3511 static void event_handler(uint8_t *packet, uint16_t size){ 3512 3513 uint16_t event_length = packet[1]; 3514 3515 // assert packet is complete 3516 if (size != (event_length + 2u)){ 3517 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3518 return; 3519 } 3520 3521 hci_con_handle_t handle; 3522 hci_connection_t * conn; 3523 int i; 3524 3525 #ifdef ENABLE_CLASSIC 3526 hci_link_type_t link_type; 3527 bd_addr_t addr; 3528 bd_addr_type_t addr_type; 3529 #endif 3530 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3531 hci_iso_stream_t * iso_stream; 3532 le_audio_big_t * big; 3533 le_audio_big_sync_t * big_sync; 3534 #endif 3535 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3536 btstack_linked_list_iterator_t it; 3537 #endif 3538 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3539 uint8_t advertising_handle; 3540 #endif 3541 3542 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3543 3544 switch (hci_event_packet_get_type(packet)) { 3545 3546 case HCI_EVENT_COMMAND_COMPLETE: 3547 handle_command_complete_event(packet, size); 3548 break; 3549 3550 case HCI_EVENT_COMMAND_STATUS: 3551 handle_command_status_event(packet, size); 3552 break; 3553 3554 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3555 if (size < 3) return; 3556 uint16_t num_handles = packet[2]; 3557 if (size != (3u + num_handles * 4u)) return; 3558 #ifdef ENABLE_CLASSIC 3559 bool notify_sco = false; 3560 #endif 3561 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3562 bool notify_iso = false; 3563 #endif 3564 uint16_t offset = 3; 3565 for (i=0; i<num_handles;i++){ 3566 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3567 offset += 2u; 3568 uint16_t num_packets = little_endian_read_16(packet, offset); 3569 offset += 2u; 3570 3571 conn = hci_connection_for_handle(handle); 3572 if (conn != NULL) { 3573 3574 if (conn->num_packets_sent >= num_packets) { 3575 conn->num_packets_sent -= num_packets; 3576 } else { 3577 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3578 conn->num_packets_sent = 0; 3579 } 3580 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3581 #ifdef ENABLE_CLASSIC 3582 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3583 notify_sco = true; 3584 } 3585 #endif 3586 } 3587 3588 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3589 hci_controller_dump_packets(); 3590 #endif 3591 3592 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3593 if (conn == NULL){ 3594 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3595 if (iso_stream != NULL){ 3596 if (iso_stream->num_packets_sent >= num_packets) { 3597 iso_stream->num_packets_sent -= num_packets; 3598 } else { 3599 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3600 iso_stream->num_packets_sent = 0; 3601 } 3602 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3603 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3604 if (big != NULL){ 3605 big->num_completed_timestamp_current_valid = true; 3606 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3607 } 3608 } 3609 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3610 num_packets, handle, iso_stream->num_packets_sent); 3611 notify_iso = true; 3612 } 3613 } 3614 #endif 3615 } 3616 3617 #ifdef ENABLE_CLASSIC 3618 if (notify_sco){ 3619 hci_notify_if_sco_can_send_now(); 3620 } 3621 #endif 3622 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3623 if (notify_iso){ 3624 hci_iso_notify_can_send_now(); 3625 } 3626 #endif 3627 break; 3628 } 3629 3630 #ifdef ENABLE_CLASSIC 3631 case HCI_EVENT_FLUSH_OCCURRED: 3632 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3633 handle = hci_event_flush_occurred_get_handle(packet); 3634 conn = hci_connection_for_handle(handle); 3635 if (conn) { 3636 log_info("Flush occurred, disconnect 0x%04x", handle); 3637 conn->state = SEND_DISCONNECT; 3638 } 3639 break; 3640 3641 case HCI_EVENT_INQUIRY_COMPLETE: 3642 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3643 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3644 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3645 hci_emit_event(event, sizeof(event), 1); 3646 } 3647 break; 3648 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3649 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3650 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3651 } 3652 break; 3653 case HCI_EVENT_CONNECTION_REQUEST: 3654 reverse_bd_addr(&packet[2], addr); 3655 link_type = (hci_link_type_t) packet[11]; 3656 3657 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3658 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3659 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3660 bd_addr_copy(hci_stack->decline_addr, addr); 3661 break; 3662 } 3663 3664 if (hci_stack->gap_classic_accept_callback != NULL){ 3665 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3666 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3667 bd_addr_copy(hci_stack->decline_addr, addr); 3668 break; 3669 } 3670 } 3671 3672 // TODO: eval COD 8-10 3673 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3674 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3675 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3676 if (!conn) { 3677 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3678 } 3679 if (!conn) { 3680 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3681 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3682 bd_addr_copy(hci_stack->decline_addr, addr); 3683 hci_run(); 3684 // avoid event to higher layer 3685 return; 3686 } 3687 conn->state = RECEIVED_CONNECTION_REQUEST; 3688 // store info about eSCO 3689 if (link_type == HCI_LINK_TYPE_ESCO){ 3690 conn->remote_supported_features[0] |= 1; 3691 } 3692 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3693 if (addr_type == BD_ADDR_TYPE_SCO){ 3694 hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3695 btstack_assert(acl_conn != NULL); 3696 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3697 } 3698 hci_run(); 3699 break; 3700 3701 case HCI_EVENT_CONNECTION_COMPLETE: 3702 // Connection management 3703 reverse_bd_addr(&packet[5], addr); 3704 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3705 addr_type = BD_ADDR_TYPE_ACL; 3706 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3707 if (conn) { 3708 switch (conn->state){ 3709 // expected states 3710 case ACCEPTED_CONNECTION_REQUEST: 3711 case SENT_CREATE_CONNECTION: 3712 break; 3713 // unexpected state -> ignore 3714 default: 3715 // don't forward event to app 3716 return; 3717 } 3718 if (!packet[2]){ 3719 conn->state = OPEN; 3720 conn->con_handle = little_endian_read_16(packet, 3); 3721 3722 // trigger write supervision timeout if we're master 3723 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3724 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3725 } 3726 3727 // trigger write automatic flush timeout 3728 if (hci_stack->automatic_flush_timeout != 0){ 3729 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3730 } 3731 3732 // restart timer 3733 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3734 btstack_run_loop_add_timer(&conn->timeout); 3735 3736 // trigger remote features for dedicated bonding 3737 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3738 hci_trigger_remote_features_for_connection(conn); 3739 } 3740 3741 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3742 3743 hci_emit_nr_connections_changed(); 3744 } else { 3745 // connection failed 3746 hci_handle_connection_failed(conn, packet[2]); 3747 } 3748 } 3749 break; 3750 3751 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3752 reverse_bd_addr(&packet[5], addr); 3753 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3754 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3755 btstack_assert(conn != NULL); 3756 3757 if (packet[2] != ERROR_CODE_SUCCESS){ 3758 // connection failed, remove entry 3759 hci_handle_connection_failed(conn, packet[2]); 3760 break; 3761 } 3762 3763 conn->state = OPEN; 3764 conn->con_handle = little_endian_read_16(packet, 3); 3765 3766 // update sco payload length for eSCO connections 3767 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3768 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3769 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3770 } 3771 3772 #ifdef ENABLE_SCO_OVER_HCI 3773 // update SCO 3774 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3775 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3776 } 3777 // trigger can send now 3778 if (hci_have_usb_transport()){ 3779 hci_stack->sco_can_send_now = true; 3780 } 3781 3782 // setup implict sco flow control 3783 conn->sco_tx_ready = 0; 3784 conn->sco_tx_active = 0; 3785 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3786 3787 #endif 3788 #ifdef HAVE_SCO_TRANSPORT 3789 // configure sco transport 3790 if (hci_stack->sco_transport != NULL){ 3791 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3792 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3793 } 3794 #endif 3795 break; 3796 3797 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3798 handle = little_endian_read_16(packet, 3); 3799 conn = hci_connection_for_handle(handle); 3800 if (!conn) break; 3801 if (!packet[2]){ 3802 const uint8_t * features = &packet[5]; 3803 hci_handle_remote_features_page_0(conn, features); 3804 3805 // read extended features if possible 3806 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3807 && ((conn->remote_supported_features[0] & 2) != 0)) { 3808 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3809 break; 3810 } 3811 } 3812 hci_handle_remote_features_received(conn); 3813 break; 3814 3815 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3816 handle = little_endian_read_16(packet, 3); 3817 conn = hci_connection_for_handle(handle); 3818 if (!conn) break; 3819 // status = ok, page = 1 3820 if (!packet[2]) { 3821 uint8_t page_number = packet[5]; 3822 uint8_t maximum_page_number = packet[6]; 3823 const uint8_t * features = &packet[7]; 3824 bool done = false; 3825 switch (page_number){ 3826 case 1: 3827 hci_handle_remote_features_page_1(conn, features); 3828 if (maximum_page_number >= 2){ 3829 // get Secure Connections (Controller) from Page 2 if available 3830 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3831 } else { 3832 // otherwise, assume SC (Controller) == SC (Host) 3833 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3834 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3835 } 3836 done = true; 3837 } 3838 break; 3839 case 2: 3840 hci_handle_remote_features_page_2(conn, features); 3841 done = true; 3842 break; 3843 default: 3844 break; 3845 } 3846 if (!done) break; 3847 } 3848 hci_handle_remote_features_received(conn); 3849 break; 3850 3851 case HCI_EVENT_LINK_KEY_REQUEST: 3852 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3853 hci_event_link_key_request_get_bd_addr(packet, addr); 3854 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3855 if (!conn) break; 3856 3857 // lookup link key in db if not cached 3858 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3859 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3860 } 3861 3862 // response sent by hci_run() 3863 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3864 #endif 3865 break; 3866 3867 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3868 hci_event_link_key_request_get_bd_addr(packet, addr); 3869 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3870 if (!conn) break; 3871 3872 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3873 3874 // CVE-2020-26555: ignore NULL link key 3875 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3876 if (btstack_is_null(&packet[8], 16)) break; 3877 3878 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3879 // Change Connection Encryption keeps link key type 3880 if (link_key_type != CHANGED_COMBINATION_KEY){ 3881 conn->link_key_type = link_key_type; 3882 } 3883 3884 // cache link key. link keys stored in little-endian format for legacy reasons 3885 memcpy(&conn->link_key, &packet[8], 16); 3886 3887 // only store link key: 3888 // - if bondable enabled 3889 if (hci_stack->bondable == false) break; 3890 // - if security level sufficient 3891 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3892 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3893 break; 3894 } 3895 3896 case HCI_EVENT_PIN_CODE_REQUEST: 3897 hci_event_pin_code_request_get_bd_addr(packet, addr); 3898 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3899 if (!conn) break; 3900 3901 hci_pairing_started(conn, false); 3902 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3903 if (!hci_stack->bondable ){ 3904 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3905 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3906 hci_run(); 3907 return; 3908 } 3909 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3910 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3911 log_info("Level 4 required, but SC not supported -> abort"); 3912 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3913 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3914 hci_run(); 3915 return; 3916 } 3917 break; 3918 3919 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3920 hci_event_io_capability_response_get_bd_addr(packet, addr); 3921 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3922 if (!conn) break; 3923 3924 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3925 hci_pairing_started(conn, true); 3926 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3927 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3928 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3929 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3930 #endif 3931 break; 3932 3933 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3934 hci_event_io_capability_response_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_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3939 hci_connection_timestamp(conn); 3940 hci_pairing_started(conn, true); 3941 break; 3942 3943 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3944 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3945 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3946 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3947 if (!conn) break; 3948 3949 hci_connection_timestamp(conn); 3950 3951 hci_pairing_started(conn, true); 3952 3953 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3954 break; 3955 #endif 3956 3957 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3958 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3959 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3960 if (!conn) break; 3961 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3962 if (hci_stack->ssp_auto_accept){ 3963 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3964 }; 3965 } else { 3966 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3967 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3968 // don't forward event to app 3969 hci_run(); 3970 return; 3971 } 3972 break; 3973 3974 case HCI_EVENT_USER_PASSKEY_REQUEST: 3975 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3976 if (hci_stack->ssp_auto_accept){ 3977 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3978 }; 3979 break; 3980 3981 case HCI_EVENT_MODE_CHANGE: 3982 handle = hci_event_mode_change_get_handle(packet); 3983 conn = hci_connection_for_handle(handle); 3984 if (!conn) break; 3985 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3986 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3987 break; 3988 #endif 3989 3990 case HCI_EVENT_ENCRYPTION_CHANGE: 3991 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3992 handle = hci_event_encryption_change_get_connection_handle(packet); 3993 conn = hci_connection_for_handle(handle); 3994 if (!conn) break; 3995 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3996 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3997 if (encryption_enabled){ 3998 if (hci_is_le_connection(conn)){ 3999 // For LE, we accept connection as encrypted 4000 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4001 } 4002 #ifdef ENABLE_CLASSIC 4003 else { 4004 4005 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4006 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4007 bool connected_uses_aes_ccm = encryption_enabled == 2; 4008 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4009 #ifdef ENABLE_TESTING_SUPPORT 4010 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4011 // - GAP/SEC/SEM/BI-31-C 4012 // - GAP/SEC/SEM/BI-32-C 4013 // - GAP/SEC/SEM/BI-33-C 4014 4015 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4016 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4017 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4018 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4019 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4020 } 4021 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4022 conn->link_key_type, new_link_key_type); 4023 conn->link_key_type = new_link_key_type; 4024 #else 4025 log_info("SC during pairing, but only E0 now -> abort"); 4026 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4027 break; 4028 #endif 4029 } 4030 4031 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4032 if (connected_uses_aes_ccm){ 4033 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4034 } 4035 4036 #ifdef ENABLE_TESTING_SUPPORT 4037 // work around for issue with PTS dongle 4038 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4039 #endif 4040 // validate encryption key size 4041 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4042 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4043 // already got encryption key size 4044 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4045 } else { 4046 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4047 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4048 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4049 } else { 4050 // if not, pretend everything is perfect 4051 hci_handle_read_encryption_key_size_complete(conn, 16); 4052 } 4053 } 4054 } 4055 #endif 4056 } else { 4057 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4058 } 4059 } else { 4060 #ifdef ENABLE_CLASSIC 4061 if (!hci_is_le_connection(conn)){ 4062 uint8_t status = hci_event_encryption_change_get_status(packet); 4063 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4064 conn->bonding_flags &= ~BONDING_DEDICATED; 4065 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4066 conn->bonding_status = status; 4067 } 4068 // trigger security update -> level 0 4069 hci_handle_mutual_authentication_completed(conn); 4070 } 4071 #endif 4072 } 4073 4074 break; 4075 4076 #ifdef ENABLE_CLASSIC 4077 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4078 handle = hci_event_authentication_complete_get_connection_handle(packet); 4079 conn = hci_connection_for_handle(handle); 4080 if (!conn) break; 4081 4082 // clear authentication active flag 4083 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4084 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4085 4086 // authenticated only if auth status == 0 4087 if (hci_event_authentication_complete_get_status(packet) == 0){ 4088 // authenticated 4089 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4090 4091 // If not already encrypted, start encryption 4092 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4093 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4094 break; 4095 } 4096 } 4097 4098 // emit updated security level (will be 0 if not authenticated) 4099 hci_handle_mutual_authentication_completed(conn); 4100 break; 4101 4102 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4103 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4104 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4105 if (!conn) break; 4106 4107 // treat successfully paired connection as authenticated 4108 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4109 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4110 } 4111 4112 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4113 break; 4114 #endif 4115 4116 // HCI_EVENT_DISCONNECTION_COMPLETE 4117 // has been split, to first notify stack before shutting connection down 4118 // see end of function, too. 4119 case HCI_EVENT_DISCONNECTION_COMPLETE: 4120 if (packet[2]) break; // status != 0 4121 handle = little_endian_read_16(packet, 3); 4122 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4123 if (hci_stack->acl_fragmentation_total_size > 0u) { 4124 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4125 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4126 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4127 hci_stack->acl_fragmentation_total_size = 0; 4128 hci_stack->acl_fragmentation_pos = 0; 4129 if (release_buffer){ 4130 hci_release_packet_buffer(); 4131 } 4132 } 4133 } 4134 4135 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4136 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4137 if (hci_stack->iso_fragmentation_total_size > 0u) { 4138 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4139 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4140 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4141 hci_stack->iso_fragmentation_total_size = 0; 4142 hci_stack->iso_fragmentation_pos = 0; 4143 if (release_buffer){ 4144 hci_release_packet_buffer(); 4145 } 4146 } 4147 } 4148 4149 // finalize iso stream for CIS handle 4150 iso_stream = hci_iso_stream_for_con_handle(handle); 4151 if (iso_stream != NULL){ 4152 hci_iso_stream_finalize(iso_stream); 4153 break; 4154 } 4155 4156 // finalize iso stream(s) for ACL handle 4157 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4158 while (btstack_linked_list_iterator_has_next(&it)){ 4159 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4160 if (iso_stream->acl_handle == handle ) { 4161 hci_iso_stream_finalize(iso_stream); 4162 } 4163 } 4164 #endif 4165 4166 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4167 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4168 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4169 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4170 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4171 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4172 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4173 hci_stack->num_cmd_packets = 1; 4174 } 4175 #endif 4176 4177 conn = hci_connection_for_handle(handle); 4178 if (!conn) break; 4179 #ifdef ENABLE_CLASSIC 4180 // pairing failed if it was ongoing 4181 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4182 #endif 4183 4184 // emit dedicatd bonding event 4185 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4186 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4187 } 4188 4189 // mark connection for shutdown, stop timers, reset state 4190 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4191 hci_connection_stop_timer(conn); 4192 hci_connection_init(conn); 4193 4194 #ifdef ENABLE_BLE 4195 #ifdef ENABLE_LE_PERIPHERAL 4196 // re-enable advertisements for le connections if active 4197 if (hci_is_le_connection(conn)){ 4198 hci_update_advertisements_enabled_for_current_roles(); 4199 } 4200 #endif 4201 #endif 4202 break; 4203 4204 case HCI_EVENT_HARDWARE_ERROR: 4205 log_error("Hardware Error: 0x%02x", packet[2]); 4206 if (hci_stack->hardware_error_callback){ 4207 (*hci_stack->hardware_error_callback)(packet[2]); 4208 } else { 4209 // if no special requests, just reboot stack 4210 hci_power_control_off(); 4211 hci_power_control_on(); 4212 } 4213 break; 4214 4215 #ifdef ENABLE_CLASSIC 4216 case HCI_EVENT_ROLE_CHANGE: 4217 if (packet[2]) break; // status != 0 4218 reverse_bd_addr(&packet[3], addr); 4219 addr_type = BD_ADDR_TYPE_ACL; 4220 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4221 if (!conn) break; 4222 conn->role = (hci_role_t) packet[9]; 4223 break; 4224 #endif 4225 4226 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4227 // release packet buffer only for asynchronous transport and if there are not further fragments 4228 if (hci_transport_synchronous()) { 4229 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4230 return; // instead of break: to avoid re-entering hci_run() 4231 } 4232 hci_stack->acl_fragmentation_tx_active = 0; 4233 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4234 hci_stack->iso_fragmentation_tx_active = 0; 4235 if (hci_stack->iso_fragmentation_total_size) break; 4236 #endif 4237 if (hci_stack->acl_fragmentation_total_size) break; 4238 hci_release_packet_buffer(); 4239 4240 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4241 hci_iso_notify_can_send_now(); 4242 #endif 4243 // L2CAP receives this event via the hci_emit_event below 4244 4245 #ifdef ENABLE_CLASSIC 4246 // For SCO, we do the can_send_now_check here 4247 hci_notify_if_sco_can_send_now(); 4248 #endif 4249 break; 4250 4251 #ifdef ENABLE_CLASSIC 4252 case HCI_EVENT_SCO_CAN_SEND_NOW: 4253 // For SCO, we do the can_send_now_check here 4254 hci_stack->sco_can_send_now = true; 4255 hci_notify_if_sco_can_send_now(); 4256 return; 4257 4258 // explode inquriy results for easier consumption 4259 case HCI_EVENT_INQUIRY_RESULT: 4260 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4261 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4262 gap_inquiry_explode(packet, size); 4263 break; 4264 #endif 4265 4266 #ifdef ENABLE_BLE 4267 case HCI_EVENT_LE_META: 4268 switch (packet[2]){ 4269 #ifdef ENABLE_LE_CENTRAL 4270 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4271 if (!hci_stack->le_scanning_enabled) break; 4272 le_handle_advertisement_report(packet, size); 4273 break; 4274 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4275 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4276 if (!hci_stack->le_scanning_enabled) break; 4277 le_handle_extended_advertisement_report(packet, size); 4278 break; 4279 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4280 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4281 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4282 break; 4283 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4284 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4285 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4286 while (btstack_linked_list_iterator_has_next(&it)) { 4287 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4288 if (advertising_set->advertising_handle == advertising_handle){ 4289 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4290 } 4291 } 4292 break; 4293 #endif 4294 #endif 4295 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4296 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4297 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4298 event_handle_le_connection_complete(packet); 4299 break; 4300 4301 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4302 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4303 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4304 conn = hci_connection_for_handle(handle); 4305 if (!conn) break; 4306 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4307 break; 4308 4309 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4310 // connection 4311 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4312 conn = hci_connection_for_handle(handle); 4313 if (conn) { 4314 // read arguments 4315 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4316 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4317 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4318 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4319 4320 // validate against current connection parameter range 4321 le_connection_parameter_range_t existing_range; 4322 gap_get_connection_parameter_range(&existing_range); 4323 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4324 if (update_parameter){ 4325 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4326 conn->le_conn_interval_min = le_conn_interval_min; 4327 conn->le_conn_interval_max = le_conn_interval_max; 4328 conn->le_conn_latency = le_conn_latency; 4329 conn->le_supervision_timeout = le_supervision_timeout; 4330 } else { 4331 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4332 } 4333 } 4334 break; 4335 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4336 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4337 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4338 conn = hci_connection_for_handle(handle); 4339 if (conn) { 4340 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4341 } 4342 break; 4343 #endif 4344 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4345 case HCI_SUBEVENT_LE_CIS_REQUEST: 4346 // incoming CIS request, allocate iso stream object and cache metadata 4347 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4348 hci_subevent_le_cis_request_get_cig_id(packet), 4349 hci_subevent_le_cis_request_get_cis_id(packet)); 4350 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4351 if (iso_stream != NULL){ 4352 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4353 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4354 } 4355 break; 4356 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4357 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4358 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4359 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4360 iso_stream = hci_iso_stream_for_con_handle(handle); 4361 btstack_assert(iso_stream != NULL); 4362 // track connection info 4363 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4364 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4365 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4366 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4367 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4368 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4369 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4370 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4371 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4372 // CIS Accept by Peripheral 4373 if (status == ERROR_CODE_SUCCESS){ 4374 if (iso_stream->max_sdu_p_to_c > 0){ 4375 // we're peripheral and we will send data 4376 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4377 } else { 4378 // we're peripheral and we will only receive data 4379 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4380 } 4381 } else { 4382 hci_cis_handle_created(iso_stream, status); 4383 } 4384 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4385 } else { 4386 // CIG Setup by Central 4387 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4388 btstack_assert(cig != NULL); 4389 // update iso stream state 4390 if (status == ERROR_CODE_SUCCESS){ 4391 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4392 } else { 4393 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4394 } 4395 // update cig state 4396 uint8_t i; 4397 for (i=0;i<cig->num_cis;i++){ 4398 if (cig->cis_con_handles[i] == handle){ 4399 cig->cis_setup_active[i] = false; 4400 if (status == ERROR_CODE_SUCCESS){ 4401 cig->cis_established[i] = true; 4402 } else { 4403 hci_cis_handle_created(iso_stream, status); 4404 } 4405 } 4406 } 4407 4408 // trigger iso path setup if complete 4409 bool cis_setup_active = false; 4410 for (i=0;i<cig->num_cis;i++){ 4411 cis_setup_active |= cig->cis_setup_active[i]; 4412 } 4413 if (cis_setup_active == false){ 4414 cig->state_vars.next_cis = 0; 4415 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4416 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4417 } 4418 } 4419 } 4420 break; 4421 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4422 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4423 big = hci_big_for_handle(packet[4]); 4424 if (big != NULL){ 4425 uint8_t status = packet[3]; 4426 if (status == ERROR_CODE_SUCCESS){ 4427 // store bis_con_handles and trigger iso path setup 4428 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4429 uint8_t i; 4430 for (i=0;i<num_bis;i++){ 4431 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4432 big->bis_con_handles[i] = bis_handle; 4433 // assign bis handle 4434 btstack_linked_list_iterator_t it; 4435 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4436 while (btstack_linked_list_iterator_has_next(&it)){ 4437 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4438 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4439 (iso_stream->group_id == big->big_handle)){ 4440 iso_stream->cis_handle = bis_handle; 4441 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4442 break; 4443 } 4444 } 4445 } 4446 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4447 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4448 big->state_vars.next_bis = 0; 4449 } 4450 } else { 4451 // create BIG failed or has been stopped by us 4452 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4453 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4454 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4455 hci_emit_big_created(big, status); 4456 } else { 4457 hci_emit_big_terminated(big); 4458 } 4459 } 4460 } 4461 break; 4462 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4463 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4464 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4465 if (big != NULL){ 4466 // finalize associated ISO streams 4467 btstack_linked_list_iterator_t it; 4468 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4469 while (btstack_linked_list_iterator_has_next(&it)){ 4470 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4471 if (iso_stream->group_id == big->big_handle){ 4472 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4473 btstack_linked_list_iterator_remove(&it); 4474 btstack_memory_hci_iso_stream_free(iso_stream); 4475 } 4476 } 4477 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4478 switch (big->state){ 4479 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4480 hci_emit_big_created(big, big->state_vars.status); 4481 break; 4482 default: 4483 hci_emit_big_terminated(big); 4484 break; 4485 } 4486 } 4487 break; 4488 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4489 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4490 big_sync = hci_big_sync_for_handle(packet[4]); 4491 if (big_sync != NULL){ 4492 uint8_t status = packet[3]; 4493 uint8_t big_handle = packet[4]; 4494 if (status == ERROR_CODE_SUCCESS){ 4495 // store bis_con_handles and trigger iso path setup 4496 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4497 uint8_t i; 4498 for (i=0;i<num_bis;i++){ 4499 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4500 big_sync->bis_con_handles[i] = bis_handle; 4501 // setup iso_stream_t 4502 btstack_linked_list_iterator_t it; 4503 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4504 while (btstack_linked_list_iterator_has_next(&it)){ 4505 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4506 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4507 (iso_stream->group_id == big_sync->big_handle)){ 4508 iso_stream->cis_handle = bis_handle; 4509 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4510 break; 4511 } 4512 } 4513 } 4514 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4515 // trigger iso path setup 4516 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4517 big_sync->state_vars.next_bis = 0; 4518 } 4519 } else { 4520 // create BIG Sync failed or has been stopped by us 4521 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4522 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4523 hci_emit_big_sync_created(big_sync, status); 4524 } else { 4525 hci_emit_big_sync_stopped(big_handle); 4526 } 4527 } 4528 } 4529 break; 4530 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4531 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4532 big_sync = hci_big_sync_for_handle(packet[4]); 4533 if (big_sync != NULL){ 4534 uint8_t big_handle = packet[4]; 4535 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4536 hci_emit_big_sync_stopped(big_handle); 4537 } 4538 break; 4539 #endif 4540 default: 4541 break; 4542 } 4543 break; 4544 #endif 4545 case HCI_EVENT_VENDOR_SPECIFIC: 4546 // Vendor specific commands often create vendor specific event instead of num completed packets 4547 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4548 switch (hci_stack->manufacturer){ 4549 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4550 hci_stack->num_cmd_packets = 1; 4551 break; 4552 default: 4553 break; 4554 } 4555 break; 4556 default: 4557 break; 4558 } 4559 4560 handle_event_for_current_stack_state(packet, size); 4561 4562 // notify upper stack 4563 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4564 4565 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4566 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4567 handle = little_endian_read_16(packet, 3); 4568 hci_connection_t * aConn = hci_connection_for_handle(handle); 4569 // discard connection if app did not trigger a reconnect in the event handler 4570 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4571 hci_shutdown_connection(aConn); 4572 } 4573 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4574 hci_controller_dump_packets(); 4575 #endif 4576 } 4577 4578 // execute main loop 4579 hci_run(); 4580 } 4581 4582 #ifdef ENABLE_CLASSIC 4583 4584 static void sco_handler(uint8_t * packet, uint16_t size){ 4585 // lookup connection struct 4586 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4587 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4588 if (!conn) return; 4589 4590 #ifdef ENABLE_SCO_OVER_HCI 4591 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4592 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4593 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4594 packet[2] = 0x3c; 4595 memmove(&packet[3], &packet[23], 63); 4596 size = 63; 4597 } 4598 } 4599 4600 if (hci_have_usb_transport()){ 4601 // Nothing to do 4602 } else { 4603 // 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); 4604 if (hci_stack->synchronous_flow_control_enabled == 0){ 4605 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4606 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4607 if (conn->sco_tx_active == 0){ 4608 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4609 conn->sco_tx_active = 1; 4610 conn->sco_tx_ready = max_sco_packets; 4611 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4612 hci_notify_if_sco_can_send_now(); 4613 } 4614 } else { 4615 if (conn->sco_tx_ready < max_sco_packets){ 4616 conn->sco_tx_ready++; 4617 } 4618 hci_notify_if_sco_can_send_now(); 4619 } 4620 } 4621 } 4622 #endif 4623 4624 // deliver to app 4625 if (hci_stack->sco_packet_handler) { 4626 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4627 } 4628 4629 #ifdef HAVE_SCO_TRANSPORT 4630 // We can send one packet for each received packet 4631 conn->sco_tx_ready++; 4632 hci_notify_if_sco_can_send_now(); 4633 #endif 4634 4635 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4636 conn->num_packets_completed++; 4637 hci_stack->host_completed_packets = 1; 4638 hci_run(); 4639 #endif 4640 } 4641 #endif 4642 4643 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4644 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4645 // propagate ISO packets received as ACL 4646 hci_iso_stream_t * iso_stream = NULL; 4647 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4648 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4649 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4650 if (iso_stream != NULL){ 4651 packet_type = HCI_ISO_DATA_PACKET; 4652 } 4653 } 4654 #endif 4655 4656 hci_dump_packet(packet_type, 1, packet, size); 4657 switch (packet_type) { 4658 case HCI_EVENT_PACKET: 4659 event_handler(packet, size); 4660 break; 4661 case HCI_ACL_DATA_PACKET: 4662 acl_handler(packet, size); 4663 break; 4664 #ifdef ENABLE_CLASSIC 4665 case HCI_SCO_DATA_PACKET: 4666 sco_handler(packet, size); 4667 break; 4668 #endif 4669 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4670 case HCI_ISO_DATA_PACKET: 4671 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4672 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4673 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4674 } 4675 hci_iso_packet_handler(iso_stream, packet, size); 4676 break; 4677 #endif 4678 default: 4679 break; 4680 } 4681 } 4682 4683 /** 4684 * @brief Add event packet handler. 4685 */ 4686 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4687 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4688 } 4689 4690 /** 4691 * @brief Remove event packet handler. 4692 */ 4693 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4694 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4695 } 4696 4697 /** Register HCI packet handlers */ 4698 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4699 hci_stack->acl_packet_handler = handler; 4700 } 4701 4702 #ifdef ENABLE_CLASSIC 4703 /** 4704 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4705 */ 4706 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4707 hci_stack->sco_packet_handler = handler; 4708 } 4709 #endif 4710 4711 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4712 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4713 hci_stack->iso_packet_handler = handler; 4714 } 4715 #endif 4716 4717 static void hci_state_reset(void){ 4718 // no connections yet 4719 hci_stack->connections = NULL; 4720 4721 // keep discoverable/connectable as this has been requested by the client(s) 4722 // hci_stack->discoverable = 0; 4723 // hci_stack->connectable = 0; 4724 // hci_stack->bondable = 1; 4725 // hci_stack->own_addr_type = 0; 4726 4727 // buffer is free 4728 hci_stack->hci_packet_buffer_reserved = false; 4729 4730 // no pending cmds 4731 hci_stack->decline_reason = 0; 4732 4733 hci_stack->secure_connections_active = false; 4734 4735 #ifdef ENABLE_CLASSIC 4736 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4737 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4738 4739 hci_stack->gap_tasks_classic = 4740 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4741 GAP_TASK_SET_CLASS_OF_DEVICE | 4742 GAP_TASK_SET_LOCAL_NAME | 4743 GAP_TASK_SET_EIR_DATA | 4744 GAP_TASK_WRITE_SCAN_ENABLE | 4745 GAP_TASK_WRITE_PAGE_TIMEOUT; 4746 #endif 4747 4748 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4749 hci_stack->classic_read_local_oob_data = false; 4750 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4751 #endif 4752 4753 // LE 4754 #ifdef ENABLE_BLE 4755 memset(hci_stack->le_random_address, 0, 6); 4756 hci_stack->le_random_address_set = 0; 4757 #endif 4758 #ifdef ENABLE_LE_CENTRAL 4759 hci_stack->le_scanning_active = false; 4760 hci_stack->le_scanning_param_update = true; 4761 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4762 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4763 hci_stack->le_whitelist_capacity = 0; 4764 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4765 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4766 #endif 4767 #endif 4768 #ifdef ENABLE_LE_PERIPHERAL 4769 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4770 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4771 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4772 } 4773 if (hci_stack->le_advertisements_data != NULL){ 4774 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4775 } 4776 #endif 4777 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4778 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4779 #endif 4780 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4781 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4782 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4783 #endif 4784 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4785 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4786 #endif 4787 } 4788 4789 #ifdef ENABLE_CLASSIC 4790 /** 4791 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4792 */ 4793 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4794 // store and open remote device db 4795 hci_stack->link_key_db = link_key_db; 4796 if (hci_stack->link_key_db) { 4797 hci_stack->link_key_db->open(); 4798 } 4799 } 4800 #endif 4801 4802 void hci_init(const hci_transport_t *transport, const void *config){ 4803 4804 #ifdef HAVE_MALLOC 4805 if (!hci_stack) { 4806 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4807 } 4808 #else 4809 hci_stack = &hci_stack_static; 4810 #endif 4811 memset(hci_stack, 0, sizeof(hci_stack_t)); 4812 4813 // reference to use transport layer implementation 4814 hci_stack->hci_transport = transport; 4815 4816 // reference to used config 4817 hci_stack->config = config; 4818 4819 // setup pointer for outgoing packet buffer 4820 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4821 4822 // max acl payload size defined in config.h 4823 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4824 4825 // register packet handlers with transport 4826 transport->register_packet_handler(&packet_handler); 4827 4828 hci_stack->state = HCI_STATE_OFF; 4829 4830 // class of device 4831 hci_stack->class_of_device = 0x007a020c; // Smartphone 4832 4833 // bondable by default 4834 hci_stack->bondable = 1; 4835 4836 #ifdef ENABLE_CLASSIC 4837 // classic name 4838 hci_stack->local_name = default_classic_name; 4839 4840 // Master slave policy 4841 hci_stack->master_slave_policy = 1; 4842 4843 // Allow Role Switch 4844 hci_stack->allow_role_switch = 1; 4845 4846 // Default / minimum security level = 2 4847 hci_stack->gap_security_level = LEVEL_2; 4848 4849 // Default Security Mode 4 4850 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4851 4852 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4853 hci_stack->gap_required_encyrption_key_size = 7; 4854 4855 // Link Supervision Timeout 4856 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4857 4858 // All ACL packet types are enabledh 4859 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4860 #endif 4861 4862 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4863 hci_stack->ssp_enable = 1; 4864 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4865 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4866 hci_stack->ssp_auto_accept = 1; 4867 4868 // Secure Connections: enable (requires support from Controller) 4869 hci_stack->secure_connections_enable = true; 4870 4871 // voice setting - signed 16 bit pcm data with CVSD over the air 4872 hci_stack->sco_voice_setting = 0x60; 4873 4874 #ifdef ENABLE_BLE 4875 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4876 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4877 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4878 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4879 hci_stack->le_connection_latency = 4; // 4 4880 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4881 hci_stack->le_minimum_ce_length = 0; // 0 ms 4882 hci_stack->le_maximum_ce_length = 0; // 0 ms 4883 #endif 4884 4885 #ifdef ENABLE_LE_CENTRAL 4886 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4887 4888 // default LE Scanning 4889 hci_stack->le_scan_type = 0x01; // active 4890 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4891 hci_stack->le_scan_window = 0x30; // 30 ms 4892 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4893 #endif 4894 4895 #ifdef ENABLE_LE_PERIPHERAL 4896 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4897 4898 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4899 hci_stack->le_advertisements_interval_min = 0x0800; 4900 hci_stack->le_advertisements_interval_max = 0x0800; 4901 hci_stack->le_advertisements_type = 0; 4902 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4903 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4904 hci_stack->le_advertisements_channel_map = 0x07; 4905 hci_stack->le_advertisements_filter_policy = 0; 4906 #endif 4907 4908 // connection parameter range used to answer connection parameter update requests in l2cap 4909 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4910 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4911 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4912 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4913 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4914 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4915 4916 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4917 hci_stack->iso_packets_to_queue = 1; 4918 #endif 4919 4920 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4921 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4922 #endif 4923 4924 hci_state_reset(); 4925 } 4926 4927 void hci_deinit(void){ 4928 btstack_run_loop_remove_timer(&hci_stack->timeout); 4929 #ifdef HAVE_MALLOC 4930 if (hci_stack) { 4931 free(hci_stack); 4932 } 4933 #endif 4934 hci_stack = NULL; 4935 4936 #ifdef ENABLE_CLASSIC 4937 disable_l2cap_timeouts = 0; 4938 #endif 4939 } 4940 4941 /** 4942 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4943 */ 4944 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4945 hci_stack->chipset = chipset_driver; 4946 4947 // reset chipset driver - init is also called on power_up 4948 if (hci_stack->chipset && hci_stack->chipset->init){ 4949 hci_stack->chipset->init(hci_stack->config); 4950 } 4951 } 4952 4953 void hci_enable_custom_pre_init(void){ 4954 hci_stack->chipset_pre_init = true; 4955 } 4956 4957 /** 4958 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4959 */ 4960 void hci_set_control(const btstack_control_t *hardware_control){ 4961 // references to used control implementation 4962 hci_stack->control = hardware_control; 4963 // init with transport config 4964 hardware_control->init(hci_stack->config); 4965 } 4966 4967 static void hci_discard_connections(void){ 4968 btstack_linked_list_iterator_t it; 4969 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4970 while (btstack_linked_list_iterator_has_next(&it)){ 4971 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4972 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4973 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4974 hci_shutdown_connection(connection); 4975 } 4976 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4977 while (hci_stack->iso_streams != NULL){ 4978 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4979 } 4980 #endif 4981 } 4982 4983 void hci_close(void){ 4984 4985 #ifdef ENABLE_CLASSIC 4986 // close remote device db 4987 if (hci_stack->link_key_db) { 4988 hci_stack->link_key_db->close(); 4989 } 4990 #endif 4991 4992 hci_discard_connections(); 4993 4994 hci_power_control(HCI_POWER_OFF); 4995 4996 #ifdef HAVE_MALLOC 4997 free(hci_stack); 4998 #endif 4999 hci_stack = NULL; 5000 } 5001 5002 #ifdef HAVE_SCO_TRANSPORT 5003 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5004 hci_stack->sco_transport = sco_transport; 5005 sco_transport->register_packet_handler(&packet_handler); 5006 } 5007 #endif 5008 5009 #ifdef ENABLE_CLASSIC 5010 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5011 // validate ranage and set 5012 if (encryption_key_size < 7) return; 5013 if (encryption_key_size > 16) return; 5014 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5015 } 5016 5017 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5018 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5019 hci_stack->gap_security_mode = security_mode; 5020 return ERROR_CODE_SUCCESS; 5021 } else { 5022 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5023 } 5024 } 5025 5026 gap_security_mode_t gap_get_security_mode(void){ 5027 return hci_stack->gap_security_mode; 5028 } 5029 5030 void gap_set_security_level(gap_security_level_t security_level){ 5031 hci_stack->gap_security_level = security_level; 5032 } 5033 5034 gap_security_level_t gap_get_security_level(void){ 5035 if (hci_stack->gap_secure_connections_only_mode){ 5036 return LEVEL_4; 5037 } 5038 return hci_stack->gap_security_level; 5039 } 5040 5041 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5042 hci_stack->gap_minimal_service_security_level = security_level; 5043 } 5044 5045 void gap_set_secure_connections_only_mode(bool enable){ 5046 hci_stack->gap_secure_connections_only_mode = enable; 5047 } 5048 5049 bool gap_get_secure_connections_only_mode(void){ 5050 return hci_stack->gap_secure_connections_only_mode; 5051 } 5052 #endif 5053 5054 #ifdef ENABLE_CLASSIC 5055 void gap_set_class_of_device(uint32_t class_of_device){ 5056 hci_stack->class_of_device = class_of_device; 5057 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5058 hci_run(); 5059 } 5060 5061 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5062 hci_stack->default_link_policy_settings = default_link_policy_settings; 5063 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5064 hci_run(); 5065 } 5066 5067 void gap_set_allow_role_switch(bool allow_role_switch){ 5068 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5069 } 5070 5071 uint8_t hci_get_allow_role_switch(void){ 5072 return hci_stack->allow_role_switch; 5073 } 5074 5075 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5076 hci_stack->link_supervision_timeout = link_supervision_timeout; 5077 } 5078 5079 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5080 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5081 } 5082 5083 uint16_t hci_automatic_flush_timeout(void){ 5084 return hci_stack->automatic_flush_timeout; 5085 } 5086 5087 void hci_disable_l2cap_timeout_check(void){ 5088 disable_l2cap_timeouts = 1; 5089 } 5090 #endif 5091 5092 #ifndef HAVE_HOST_CONTROLLER_API 5093 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5094 void hci_set_bd_addr(bd_addr_t addr){ 5095 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5096 hci_stack->custom_bd_addr_set = 1; 5097 } 5098 #endif 5099 5100 // State-Module-Driver overview 5101 // state module low-level 5102 // HCI_STATE_OFF off close 5103 // HCI_STATE_INITIALIZING, on open 5104 // HCI_STATE_WORKING, on open 5105 // HCI_STATE_HALTING, on open 5106 // HCI_STATE_SLEEPING, off/sleep close 5107 // HCI_STATE_FALLING_ASLEEP on open 5108 5109 static int hci_power_control_on(void){ 5110 5111 // power on 5112 int err = 0; 5113 if (hci_stack->control && hci_stack->control->on){ 5114 err = (*hci_stack->control->on)(); 5115 } 5116 if (err){ 5117 log_error( "POWER_ON failed"); 5118 hci_emit_hci_open_failed(); 5119 return err; 5120 } 5121 5122 // int chipset driver 5123 if (hci_stack->chipset && hci_stack->chipset->init){ 5124 hci_stack->chipset->init(hci_stack->config); 5125 } 5126 5127 // init transport 5128 if (hci_stack->hci_transport->init){ 5129 hci_stack->hci_transport->init(hci_stack->config); 5130 } 5131 5132 // open transport 5133 err = hci_stack->hci_transport->open(); 5134 if (err){ 5135 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5136 if (hci_stack->control && hci_stack->control->off){ 5137 (*hci_stack->control->off)(); 5138 } 5139 hci_emit_hci_open_failed(); 5140 return err; 5141 } 5142 return 0; 5143 } 5144 5145 static void hci_power_control_off(void){ 5146 5147 log_info("hci_power_control_off"); 5148 5149 // close low-level device 5150 hci_stack->hci_transport->close(); 5151 5152 log_info("hci_power_control_off - hci_transport closed"); 5153 5154 // power off 5155 if (hci_stack->control && hci_stack->control->off){ 5156 (*hci_stack->control->off)(); 5157 } 5158 5159 log_info("hci_power_control_off - control closed"); 5160 5161 hci_stack->state = HCI_STATE_OFF; 5162 } 5163 5164 static void hci_power_control_sleep(void){ 5165 5166 log_info("hci_power_control_sleep"); 5167 5168 #if 0 5169 // don't close serial port during sleep 5170 5171 // close low-level device 5172 hci_stack->hci_transport->close(hci_stack->config); 5173 #endif 5174 5175 // sleep mode 5176 if (hci_stack->control && hci_stack->control->sleep){ 5177 (*hci_stack->control->sleep)(); 5178 } 5179 5180 hci_stack->state = HCI_STATE_SLEEPING; 5181 } 5182 5183 static int hci_power_control_wake(void){ 5184 5185 log_info("hci_power_control_wake"); 5186 5187 // wake on 5188 if (hci_stack->control && hci_stack->control->wake){ 5189 (*hci_stack->control->wake)(); 5190 } 5191 5192 #if 0 5193 // open low-level device 5194 int err = hci_stack->hci_transport->open(hci_stack->config); 5195 if (err){ 5196 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5197 if (hci_stack->control && hci_stack->control->off){ 5198 (*hci_stack->control->off)(); 5199 } 5200 hci_emit_hci_open_failed(); 5201 return err; 5202 } 5203 #endif 5204 5205 return 0; 5206 } 5207 5208 static void hci_power_enter_initializing_state(void){ 5209 // set up state machine 5210 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5211 hci_stack->hci_packet_buffer_reserved = false; 5212 hci_stack->state = HCI_STATE_INITIALIZING; 5213 5214 #ifndef HAVE_HOST_CONTROLLER_API 5215 if (hci_stack->chipset_pre_init) { 5216 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5217 } else 5218 #endif 5219 { 5220 hci_stack->substate = HCI_INIT_SEND_RESET; 5221 } 5222 } 5223 5224 static void hci_power_enter_halting_state(void){ 5225 #ifdef ENABLE_BLE 5226 // drop entries scheduled for removal, mark others for re-adding 5227 btstack_linked_list_iterator_t it; 5228 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5229 while (btstack_linked_list_iterator_has_next(&it)){ 5230 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5231 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5232 btstack_linked_list_iterator_remove(&it); 5233 btstack_memory_whitelist_entry_free(entry); 5234 } else { 5235 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5236 } 5237 } 5238 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5239 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5240 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5241 while (btstack_linked_list_iterator_has_next(&it)){ 5242 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5243 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5244 btstack_linked_list_iterator_remove(&it); 5245 btstack_memory_periodic_advertiser_list_entry_free(entry); 5246 } else { 5247 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5248 continue; 5249 } 5250 } 5251 #endif 5252 #endif 5253 // see hci_run 5254 hci_stack->state = HCI_STATE_HALTING; 5255 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5256 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5257 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5258 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5259 btstack_run_loop_add_timer(&hci_stack->timeout); 5260 } 5261 5262 // returns error 5263 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5264 int err; 5265 switch (power_mode){ 5266 case HCI_POWER_ON: 5267 err = hci_power_control_on(); 5268 if (err != 0) { 5269 log_error("hci_power_control_on() error %d", err); 5270 return err; 5271 } 5272 hci_power_enter_initializing_state(); 5273 break; 5274 case HCI_POWER_OFF: 5275 // do nothing 5276 break; 5277 case HCI_POWER_SLEEP: 5278 // do nothing (with SLEEP == OFF) 5279 break; 5280 default: 5281 btstack_assert(false); 5282 break; 5283 } 5284 return ERROR_CODE_SUCCESS; 5285 } 5286 5287 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5288 switch (power_mode){ 5289 case HCI_POWER_ON: 5290 // do nothing 5291 break; 5292 case HCI_POWER_OFF: 5293 // no connections yet, just turn it off 5294 hci_power_control_off(); 5295 break; 5296 case HCI_POWER_SLEEP: 5297 // no connections yet, just turn it off 5298 hci_power_control_sleep(); 5299 break; 5300 default: 5301 btstack_assert(false); 5302 break; 5303 } 5304 return ERROR_CODE_SUCCESS; 5305 } 5306 5307 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5308 switch (power_mode){ 5309 case HCI_POWER_ON: 5310 // do nothing 5311 break; 5312 case HCI_POWER_OFF: 5313 hci_power_enter_halting_state(); 5314 break; 5315 case HCI_POWER_SLEEP: 5316 // see hci_run 5317 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5318 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 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_halting(HCI_POWER_MODE power_mode) { 5328 switch (power_mode){ 5329 case HCI_POWER_ON: 5330 hci_power_enter_initializing_state(); 5331 break; 5332 case HCI_POWER_OFF: 5333 // do nothing 5334 break; 5335 case HCI_POWER_SLEEP: 5336 // see hci_run 5337 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5338 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5339 break; 5340 default: 5341 btstack_assert(false); 5342 break; 5343 } 5344 return ERROR_CODE_SUCCESS; 5345 } 5346 5347 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5348 switch (power_mode){ 5349 case HCI_POWER_ON: 5350 hci_power_enter_initializing_state(); 5351 break; 5352 case HCI_POWER_OFF: 5353 hci_power_enter_halting_state(); 5354 break; 5355 case HCI_POWER_SLEEP: 5356 // do nothing 5357 break; 5358 default: 5359 btstack_assert(false); 5360 break; 5361 } 5362 return ERROR_CODE_SUCCESS; 5363 } 5364 5365 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5366 int err; 5367 switch (power_mode){ 5368 case HCI_POWER_ON: 5369 err = hci_power_control_wake(); 5370 if (err) return err; 5371 hci_power_enter_initializing_state(); 5372 break; 5373 case HCI_POWER_OFF: 5374 hci_power_enter_halting_state(); 5375 break; 5376 case HCI_POWER_SLEEP: 5377 // do nothing 5378 break; 5379 default: 5380 btstack_assert(false); 5381 break; 5382 } 5383 return ERROR_CODE_SUCCESS; 5384 } 5385 5386 int hci_power_control(HCI_POWER_MODE power_mode){ 5387 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5388 btstack_run_loop_remove_timer(&hci_stack->timeout); 5389 int err = 0; 5390 switch (hci_stack->state){ 5391 case HCI_STATE_OFF: 5392 err = hci_power_control_state_off(power_mode); 5393 break; 5394 case HCI_STATE_INITIALIZING: 5395 err = hci_power_control_state_initializing(power_mode); 5396 break; 5397 case HCI_STATE_WORKING: 5398 err = hci_power_control_state_working(power_mode); 5399 break; 5400 case HCI_STATE_HALTING: 5401 err = hci_power_control_state_halting(power_mode); 5402 break; 5403 case HCI_STATE_FALLING_ASLEEP: 5404 err = hci_power_control_state_falling_asleep(power_mode); 5405 break; 5406 case HCI_STATE_SLEEPING: 5407 err = hci_power_control_state_sleeping(power_mode); 5408 break; 5409 default: 5410 btstack_assert(false); 5411 break; 5412 } 5413 if (err != 0){ 5414 return err; 5415 } 5416 5417 // create internal event 5418 hci_emit_state(); 5419 5420 // trigger next/first action 5421 hci_run(); 5422 5423 return 0; 5424 } 5425 5426 5427 static void hci_halting_run(void) { 5428 5429 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5430 5431 hci_connection_t *connection; 5432 #ifdef ENABLE_BLE 5433 #ifdef ENABLE_LE_PERIPHERAL 5434 bool stop_advertismenets; 5435 #endif 5436 #endif 5437 5438 switch (hci_stack->substate) { 5439 case HCI_HALTING_CLASSIC_STOP: 5440 #ifdef ENABLE_CLASSIC 5441 if (!hci_can_send_command_packet_now()) return; 5442 5443 if (hci_stack->connectable || hci_stack->discoverable){ 5444 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5445 hci_send_cmd(&hci_write_scan_enable, 0); 5446 return; 5447 } 5448 #endif 5449 /* fall through */ 5450 5451 case HCI_HALTING_LE_ADV_STOP: 5452 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5453 5454 #ifdef ENABLE_BLE 5455 #ifdef ENABLE_LE_PERIPHERAL 5456 if (!hci_can_send_command_packet_now()) return; 5457 5458 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5459 5460 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5461 if (hci_extended_advertising_supported()){ 5462 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5463 btstack_linked_list_iterator_t it; 5464 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5465 // stop all periodic advertisements and check if an extended set is active 5466 while (btstack_linked_list_iterator_has_next(&it)){ 5467 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5468 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5469 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5470 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5471 return; 5472 } 5473 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5474 stop_advertismenets = true; 5475 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5476 } 5477 } 5478 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5479 if (stop_advertismenets){ 5480 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5481 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5482 return; 5483 } 5484 } else 5485 #else /* ENABLE_LE_PERIPHERAL */ 5486 { 5487 if (stop_advertismenets) { 5488 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5489 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5490 return; 5491 } 5492 } 5493 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5494 #endif /* ENABLE_LE_PERIPHERAL */ 5495 #endif /* ENABLE_BLE */ 5496 5497 /* fall through */ 5498 5499 case HCI_HALTING_LE_SCAN_STOP: 5500 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5501 if (!hci_can_send_command_packet_now()) return; 5502 5503 #ifdef ENABLE_BLE 5504 #ifdef ENABLE_LE_CENTRAL 5505 if (hci_stack->le_scanning_active){ 5506 hci_le_scan_stop(); 5507 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5508 return; 5509 } 5510 #endif 5511 #endif 5512 5513 /* fall through */ 5514 5515 case HCI_HALTING_DISCONNECT_ALL: 5516 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5517 if (!hci_can_send_command_packet_now()) return; 5518 5519 // close all open connections 5520 connection = (hci_connection_t *) hci_stack->connections; 5521 if (connection) { 5522 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5523 5524 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5525 5526 // check state 5527 switch(connection->state) { 5528 case SENT_DISCONNECT: 5529 case RECEIVED_DISCONNECTION_COMPLETE: 5530 // wait until connection is gone 5531 return; 5532 default: 5533 break; 5534 } 5535 5536 // finally, send the disconnect command 5537 connection->state = SENT_DISCONNECT; 5538 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5539 return; 5540 } 5541 5542 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5543 // stop BIGs and BIG Syncs 5544 if (hci_stack->le_audio_bigs != NULL){ 5545 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5546 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5547 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5548 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5549 return; 5550 } 5551 if (hci_stack->le_audio_big_syncs != NULL){ 5552 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5553 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5554 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5555 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5556 return; 5557 } 5558 #endif 5559 5560 btstack_run_loop_remove_timer(&hci_stack->timeout); 5561 5562 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5563 log_info("HCI_STATE_HALTING: wait 50 ms"); 5564 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5565 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5566 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5567 btstack_run_loop_add_timer(&hci_stack->timeout); 5568 break; 5569 5570 case HCI_HALTING_W4_CLOSE_TIMER: 5571 // keep waiting 5572 break; 5573 5574 case HCI_HALTING_CLOSE: 5575 // close left over connections (that had not been properly closed before) 5576 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5577 hci_discard_connections(); 5578 5579 log_info("HCI_STATE_HALTING, calling off"); 5580 5581 // switch mode 5582 hci_power_control_off(); 5583 5584 log_info("HCI_STATE_HALTING, emitting state"); 5585 hci_emit_state(); 5586 log_info("HCI_STATE_HALTING, done"); 5587 break; 5588 5589 default: 5590 break; 5591 } 5592 }; 5593 5594 static void hci_falling_asleep_run(void){ 5595 hci_connection_t * connection; 5596 switch(hci_stack->substate) { 5597 case HCI_FALLING_ASLEEP_DISCONNECT: 5598 log_info("HCI_STATE_FALLING_ASLEEP"); 5599 // close all open connections 5600 connection = (hci_connection_t *) hci_stack->connections; 5601 if (connection){ 5602 5603 // send disconnect 5604 if (!hci_can_send_command_packet_now()) return; 5605 5606 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5607 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5608 5609 // send disconnected event right away - causes higher layer connections to get closed, too. 5610 hci_shutdown_connection(connection); 5611 return; 5612 } 5613 5614 if (hci_classic_supported()){ 5615 // disable page and inquiry scan 5616 if (!hci_can_send_command_packet_now()) return; 5617 5618 log_info("HCI_STATE_HALTING, disabling inq scans"); 5619 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5620 5621 // continue in next sub state 5622 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5623 break; 5624 } 5625 5626 /* fall through */ 5627 5628 case HCI_FALLING_ASLEEP_COMPLETE: 5629 log_info("HCI_STATE_HALTING, calling sleep"); 5630 // switch mode 5631 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5632 hci_emit_state(); 5633 break; 5634 5635 default: 5636 break; 5637 } 5638 } 5639 5640 #ifdef ENABLE_CLASSIC 5641 5642 static void hci_update_scan_enable(void){ 5643 // 2 = page scan, 1 = inq scan 5644 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5645 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5646 hci_run(); 5647 } 5648 5649 void gap_discoverable_control(uint8_t enable){ 5650 if (enable) enable = 1; // normalize argument 5651 5652 if (hci_stack->discoverable == enable){ 5653 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5654 return; 5655 } 5656 5657 hci_stack->discoverable = enable; 5658 hci_update_scan_enable(); 5659 } 5660 5661 void gap_connectable_control(uint8_t enable){ 5662 if (enable) enable = 1; // normalize argument 5663 5664 // don't emit event 5665 if (hci_stack->connectable == enable) return; 5666 5667 hci_stack->connectable = enable; 5668 hci_update_scan_enable(); 5669 } 5670 #endif 5671 5672 void gap_local_bd_addr(bd_addr_t address_buffer){ 5673 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5674 } 5675 5676 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5677 static void hci_host_num_completed_packets(void){ 5678 5679 // create packet manually as arrays are not supported and num_commands should not get reduced 5680 hci_reserve_packet_buffer(); 5681 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5682 5683 uint16_t size = 0; 5684 uint16_t num_handles = 0; 5685 packet[size++] = 0x35; 5686 packet[size++] = 0x0c; 5687 size++; // skip param len 5688 size++; // skip num handles 5689 5690 // add { handle, packets } entries 5691 btstack_linked_item_t * it; 5692 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5693 hci_connection_t * connection = (hci_connection_t *) it; 5694 if (connection->num_packets_completed){ 5695 little_endian_store_16(packet, size, connection->con_handle); 5696 size += 2; 5697 little_endian_store_16(packet, size, connection->num_packets_completed); 5698 size += 2; 5699 // 5700 num_handles++; 5701 connection->num_packets_completed = 0; 5702 } 5703 } 5704 5705 packet[2] = size - 3; 5706 packet[3] = num_handles; 5707 5708 hci_stack->host_completed_packets = 0; 5709 5710 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5711 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5712 5713 // release packet buffer for synchronous transport implementations 5714 if (hci_transport_synchronous()){ 5715 hci_release_packet_buffer(); 5716 hci_emit_transport_packet_sent(); 5717 } 5718 } 5719 #endif 5720 5721 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5722 UNUSED(ds); 5723 hci_stack->substate = HCI_HALTING_CLOSE; 5724 hci_halting_run(); 5725 } 5726 5727 static bool hci_run_acl_fragments(void){ 5728 if (hci_stack->acl_fragmentation_total_size > 0u) { 5729 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5730 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5731 if (connection) { 5732 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5733 hci_send_acl_packet_fragments(connection); 5734 return true; 5735 } 5736 } else { 5737 // connection gone -> discard further fragments 5738 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5739 hci_stack->acl_fragmentation_total_size = 0; 5740 hci_stack->acl_fragmentation_pos = 0; 5741 } 5742 } 5743 return false; 5744 } 5745 5746 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5747 static bool hci_run_iso_fragments(void){ 5748 if (hci_stack->iso_fragmentation_total_size > 0u) { 5749 // TODO: flow control 5750 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5751 hci_send_iso_packet_fragments(); 5752 return true; 5753 } 5754 } 5755 return false; 5756 } 5757 #endif 5758 5759 #ifdef ENABLE_CLASSIC 5760 5761 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5762 static bool hci_classic_operation_active(void) { 5763 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5764 return true; 5765 } 5766 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5767 return true; 5768 } 5769 btstack_linked_item_t * it; 5770 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5771 hci_connection_t *connection = (hci_connection_t *) it; 5772 switch (connection->state) { 5773 case SENT_CREATE_CONNECTION: 5774 case SENT_CANCEL_CONNECTION: 5775 case SENT_DISCONNECT: 5776 return true; 5777 default: 5778 break; 5779 } 5780 } 5781 return false; 5782 } 5783 #endif 5784 5785 static bool hci_run_general_gap_classic(void){ 5786 5787 // assert stack is working and classic is active 5788 if (hci_classic_supported() == false) return false; 5789 if (hci_stack->state != HCI_STATE_WORKING) return false; 5790 5791 // decline incoming connections 5792 if (hci_stack->decline_reason){ 5793 uint8_t reason = hci_stack->decline_reason; 5794 hci_stack->decline_reason = 0; 5795 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5796 return true; 5797 } 5798 5799 if (hci_stack->gap_tasks_classic != 0){ 5800 hci_run_gap_tasks_classic(); 5801 return true; 5802 } 5803 5804 // start/stop inquiry 5805 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5806 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5807 if (hci_classic_operation_active() == false) 5808 #endif 5809 { 5810 uint8_t duration = hci_stack->inquiry_state; 5811 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5812 if (hci_stack->inquiry_max_period_length != 0){ 5813 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); 5814 } else { 5815 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5816 } 5817 return true; 5818 } 5819 } 5820 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5821 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5822 hci_send_cmd(&hci_inquiry_cancel); 5823 return true; 5824 } 5825 5826 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5827 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5828 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5829 return true; 5830 } 5831 5832 // remote name request 5833 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5834 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5835 if (hci_classic_operation_active() == false) 5836 #endif 5837 { 5838 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5839 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5840 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5841 return true; 5842 } 5843 } 5844 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5845 // Local OOB data 5846 if (hci_stack->classic_read_local_oob_data){ 5847 hci_stack->classic_read_local_oob_data = false; 5848 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5849 hci_send_cmd(&hci_read_local_extended_oob_data); 5850 } else { 5851 hci_send_cmd(&hci_read_local_oob_data); 5852 } 5853 } 5854 #endif 5855 // pairing 5856 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5857 uint8_t state = hci_stack->gap_pairing_state; 5858 uint8_t pin_code[PIN_CODE_LEN]; 5859 switch (state){ 5860 case GAP_PAIRING_STATE_SEND_PIN: 5861 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5862 memset(pin_code, 0, 16); 5863 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5864 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5865 break; 5866 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5867 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5868 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5869 break; 5870 case GAP_PAIRING_STATE_SEND_PASSKEY: 5871 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5872 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5873 break; 5874 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5875 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5876 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5877 break; 5878 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5879 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5880 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5881 break; 5882 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5883 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5884 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5885 break; 5886 default: 5887 break; 5888 } 5889 return true; 5890 } 5891 return false; 5892 } 5893 #endif 5894 5895 #ifdef ENABLE_BLE 5896 5897 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5898 static uint8_t hci_le_num_phys(uint8_t phys){ 5899 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5900 btstack_assert(phys); 5901 return num_bits_set[phys]; 5902 } 5903 #endif 5904 5905 #ifdef ENABLE_LE_CENTRAL 5906 static void hci_le_scan_stop(void){ 5907 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5908 if (hci_extended_advertising_supported()) { 5909 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5910 } else 5911 #endif 5912 { 5913 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5914 } 5915 } 5916 5917 static void 5918 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5919 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5920 if (hci_extended_advertising_supported()) { 5921 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5922 uint16_t le_connection_scan_interval[3]; 5923 uint16_t le_connection_scan_window[3]; 5924 uint16_t le_connection_interval_min[3]; 5925 uint16_t le_connection_interval_max[3]; 5926 uint16_t le_connection_latency[3]; 5927 uint16_t le_supervision_timeout[3]; 5928 uint16_t le_minimum_ce_length[3]; 5929 uint16_t le_maximum_ce_length[3]; 5930 5931 uint8_t i; 5932 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5933 for (i=0;i<num_phys;i++){ 5934 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5935 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5936 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5937 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5938 le_connection_latency[i] = hci_stack->le_connection_latency; 5939 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5940 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5941 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5942 } 5943 hci_send_cmd(&hci_le_extended_create_connection, 5944 initiator_filter_policy, 5945 hci_stack->le_connection_own_addr_type, // our addr type: 5946 address_type, // peer address type 5947 address, // peer bd addr 5948 hci_stack->le_connection_phys, // initiating PHY 5949 le_connection_scan_interval, // conn scan interval 5950 le_connection_scan_window, // conn scan windows 5951 le_connection_interval_min, // conn interval min 5952 le_connection_interval_max, // conn interval max 5953 le_connection_latency, // conn latency 5954 le_supervision_timeout, // conn latency 5955 le_minimum_ce_length, // min ce length 5956 le_maximum_ce_length // max ce length 5957 ); 5958 } else 5959 #endif 5960 { 5961 hci_send_cmd(&hci_le_create_connection, 5962 hci_stack->le_connection_scan_interval, // conn scan interval 5963 hci_stack->le_connection_scan_window, // conn scan windows 5964 initiator_filter_policy, // don't use whitelist 5965 address_type, // peer address type 5966 address, // peer bd addr 5967 hci_stack->le_connection_own_addr_type, // our addr type: 5968 hci_stack->le_connection_interval_min, // conn interval min 5969 hci_stack->le_connection_interval_max, // conn interval max 5970 hci_stack->le_connection_latency, // conn latency 5971 hci_stack->le_supervision_timeout, // conn latency 5972 hci_stack->le_minimum_ce_length, // min ce length 5973 hci_stack->le_maximum_ce_length // max ce length 5974 ); 5975 } 5976 } 5977 #endif 5978 5979 #ifdef ENABLE_LE_PERIPHERAL 5980 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5981 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5982 uint8_t operation = 0; 5983 if (pos == 0){ 5984 // first fragment or complete data 5985 operation |= 1; 5986 } 5987 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5988 // last fragment or complete data 5989 operation |= 2; 5990 } 5991 return operation; 5992 } 5993 #endif 5994 #endif 5995 5996 static bool hci_run_general_gap_le(void){ 5997 5998 btstack_linked_list_iterator_t lit; 5999 6000 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6001 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6002 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6003 hci_stack->le_resolvable_private_address_update_s = 0; 6004 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6005 return true; 6006 } 6007 #endif 6008 6009 // Phase 1: collect what to stop 6010 6011 #ifdef ENABLE_LE_CENTRAL 6012 bool scanning_stop = false; 6013 bool connecting_stop = false; 6014 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6015 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6016 bool periodic_sync_stop = false; 6017 #endif 6018 #endif 6019 #endif 6020 6021 #ifdef ENABLE_LE_PERIPHERAL 6022 bool advertising_stop = false; 6023 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6024 le_advertising_set_t * advertising_stop_set = NULL; 6025 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6026 bool periodic_advertising_stop = false; 6027 #endif 6028 #endif 6029 #endif 6030 6031 // check if own address changes 6032 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6033 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6034 6035 // check if whitelist needs modification 6036 bool whitelist_modification_pending = false; 6037 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6038 while (btstack_linked_list_iterator_has_next(&lit)){ 6039 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6040 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6041 whitelist_modification_pending = true; 6042 break; 6043 } 6044 } 6045 6046 // check if resolving list needs modification 6047 bool resolving_list_modification_pending = false; 6048 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6049 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6050 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6051 resolving_list_modification_pending = true; 6052 } 6053 #endif 6054 6055 #ifdef ENABLE_LE_CENTRAL 6056 6057 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6058 // check if periodic advertiser list needs modification 6059 bool periodic_list_modification_pending = false; 6060 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6061 while (btstack_linked_list_iterator_has_next(&lit)){ 6062 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6063 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6064 periodic_list_modification_pending = true; 6065 break; 6066 } 6067 } 6068 #endif 6069 6070 // scanning control 6071 if (hci_stack->le_scanning_active) { 6072 // stop if: 6073 // - parameter change required 6074 // - it's disabled 6075 // - whitelist change required but used for scanning 6076 // - resolving list modified 6077 // - own address changes 6078 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6079 if ((hci_stack->le_scanning_param_update) || 6080 !hci_stack->le_scanning_enabled || 6081 (scanning_uses_whitelist && whitelist_modification_pending) || 6082 resolving_list_modification_pending || 6083 random_address_change){ 6084 6085 scanning_stop = true; 6086 } 6087 } 6088 6089 // connecting control 6090 bool connecting_with_whitelist; 6091 switch (hci_stack->le_connecting_state){ 6092 case LE_CONNECTING_DIRECT: 6093 case LE_CONNECTING_WHITELIST: 6094 // stop connecting if: 6095 // - connecting uses white and whitelist modification pending 6096 // - if it got disabled 6097 // - resolving list modified 6098 // - own address changes 6099 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6100 if ((connecting_with_whitelist && whitelist_modification_pending) || 6101 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6102 resolving_list_modification_pending || 6103 random_address_change) { 6104 6105 connecting_stop = true; 6106 } 6107 break; 6108 default: 6109 break; 6110 } 6111 6112 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6113 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6114 // periodic sync control 6115 bool sync_with_advertiser_list; 6116 switch(hci_stack->le_periodic_sync_state){ 6117 case LE_CONNECTING_DIRECT: 6118 case LE_CONNECTING_WHITELIST: 6119 // stop sync if: 6120 // - sync with advertiser list and advertiser list modification pending 6121 // - if it got disabled 6122 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6123 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6124 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6125 periodic_sync_stop = true; 6126 } 6127 break; 6128 default: 6129 break; 6130 } 6131 #endif 6132 #endif 6133 6134 #endif /* ENABLE_LE_CENTRAL */ 6135 6136 #ifdef ENABLE_LE_PERIPHERAL 6137 // le advertisement control 6138 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6139 // stop if: 6140 // - parameter change required 6141 // - random address used in advertising and changes 6142 // - it's disabled 6143 // - whitelist change required but used for advertisement filter policy 6144 // - resolving list modified 6145 // - own address changes 6146 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6147 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6148 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6149 if (advertising_change || 6150 (advertising_uses_random_address && random_address_change) || 6151 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6152 (advertising_uses_whitelist && whitelist_modification_pending) || 6153 resolving_list_modification_pending || 6154 random_address_change) { 6155 6156 advertising_stop = true; 6157 } 6158 } 6159 6160 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6161 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6162 btstack_linked_list_iterator_t it; 6163 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6164 while (btstack_linked_list_iterator_has_next(&it)){ 6165 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6166 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6167 // stop if: 6168 // - parameter change required 6169 // - random address used in connectable advertising and changes 6170 // - it's disabled 6171 // - whitelist change required but used for advertisement filter policy 6172 // - resolving list modified 6173 // - own address changes 6174 // - advertisement set will be removed 6175 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6176 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6177 bool advertising_uses_random_address = 6178 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6179 advertising_connectable; 6180 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6181 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6182 bool advertising_set_random_address_change = 6183 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6184 bool advertising_set_will_be_removed = 6185 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6186 if (advertising_parameter_change || 6187 (advertising_uses_random_address && advertising_set_random_address_change) || 6188 (advertising_enabled == false) || 6189 (advertising_uses_whitelist && whitelist_modification_pending) || 6190 resolving_list_modification_pending || 6191 advertising_set_will_be_removed) { 6192 6193 advertising_stop = true; 6194 advertising_stop_set = advertising_set; 6195 break; 6196 } 6197 } 6198 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6199 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6200 // stop if: 6201 // - it's disabled 6202 // - parameter change required 6203 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6204 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6205 if ((periodic_enabled == false) || periodic_parameter_change){ 6206 periodic_advertising_stop = true; 6207 advertising_stop_set = advertising_set; 6208 } 6209 } 6210 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6211 } 6212 } 6213 #endif 6214 6215 #endif 6216 6217 6218 // Phase 2: stop everything that should be off during modifications 6219 6220 6221 // 2.1 Outgoing connection 6222 #ifdef ENABLE_LE_CENTRAL 6223 if (connecting_stop){ 6224 hci_send_cmd(&hci_le_create_connection_cancel); 6225 return true; 6226 } 6227 #endif 6228 6229 // 2.2 Scanning 6230 #ifdef ENABLE_LE_CENTRAL 6231 if (scanning_stop){ 6232 hci_stack->le_scanning_active = false; 6233 hci_le_scan_stop(); 6234 return true; 6235 } 6236 6237 // 2.3 Periodic Sync 6238 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6239 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6240 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6241 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6242 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6243 return true; 6244 } 6245 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6246 if (periodic_sync_stop){ 6247 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6248 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6249 return true; 6250 } 6251 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6252 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6253 #endif /* ENABLE_LE_CENTRAL */ 6254 6255 // 2.4 Advertising: legacy, extended, periodic 6256 #ifdef ENABLE_LE_PERIPHERAL 6257 if (advertising_stop){ 6258 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6259 if (hci_extended_advertising_supported()) { 6260 uint8_t advertising_stop_handle; 6261 if (advertising_stop_set != NULL){ 6262 advertising_stop_handle = advertising_stop_set->advertising_handle; 6263 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6264 } else { 6265 advertising_stop_handle = 0; 6266 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6267 } 6268 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6269 const uint16_t durations[] = { 0 }; 6270 const uint16_t max_events[] = { 0 }; 6271 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6272 } else 6273 #endif 6274 { 6275 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6276 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6277 } 6278 return true; 6279 } 6280 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6281 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6282 if (periodic_advertising_stop){ 6283 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6284 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6285 return true; 6286 } 6287 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6288 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6289 #endif /* ENABLE_LE_PERIPHERAL */ 6290 6291 6292 // Phase 3: modify 6293 6294 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6295 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6296 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6297 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6298 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6299 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6300 #endif 6301 return true; 6302 } 6303 6304 #ifdef ENABLE_LE_CENTRAL 6305 if (hci_stack->le_scanning_param_update){ 6306 hci_stack->le_scanning_param_update = false; 6307 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6308 if (hci_extended_advertising_supported()){ 6309 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6310 uint8_t scan_types[2]; 6311 uint16_t scan_intervals[2]; 6312 uint16_t scan_windows[2]; 6313 6314 uint8_t i; 6315 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6316 for (i=0;i<num_phys;i++){ 6317 scan_types[i] = hci_stack->le_scan_type; 6318 scan_intervals[i] = hci_stack->le_scan_interval; 6319 scan_windows[i] = hci_stack->le_scan_window; 6320 } 6321 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6322 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6323 } else 6324 #endif 6325 { 6326 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6327 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6328 } 6329 return true; 6330 } 6331 #endif 6332 6333 #ifdef ENABLE_LE_PERIPHERAL 6334 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6335 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6336 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6337 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6338 if (hci_extended_advertising_supported()){ 6339 // map advertisment type to advertising event properties 6340 uint16_t adv_event_properties = 0; 6341 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6342 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6343 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6344 } 6345 hci_stack->le_advertising_set_in_current_command = 0; 6346 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6347 0, 6348 adv_event_properties, 6349 hci_stack->le_advertisements_interval_min, 6350 hci_stack->le_advertisements_interval_max, 6351 hci_stack->le_advertisements_channel_map, 6352 hci_stack->le_advertisements_own_addr_type, 6353 hci_stack->le_advertisements_direct_address_type, 6354 hci_stack->le_advertisements_direct_address, 6355 hci_stack->le_advertisements_filter_policy, 6356 0x7f, // tx power: no preference 6357 0x01, // primary adv phy: LE 1M 6358 0, // secondary adv max skip 6359 0x01, // secondary adv phy 6360 0, // adv sid 6361 0 // scan request notification 6362 ); 6363 } else 6364 #endif 6365 { 6366 hci_send_cmd(&hci_le_set_advertising_parameters, 6367 hci_stack->le_advertisements_interval_min, 6368 hci_stack->le_advertisements_interval_max, 6369 hci_stack->le_advertisements_type, 6370 hci_stack->le_advertisements_own_addr_type, 6371 hci_stack->le_advertisements_direct_address_type, 6372 hci_stack->le_advertisements_direct_address, 6373 hci_stack->le_advertisements_channel_map, 6374 hci_stack->le_advertisements_filter_policy); 6375 } 6376 return true; 6377 } 6378 6379 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6380 // assumption: only set if extended advertising is supported 6381 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6382 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6383 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6384 return true; 6385 } 6386 #endif 6387 6388 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6389 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6390 uint8_t adv_data_clean[31]; 6391 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6392 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6393 hci_stack->le_advertisements_data_len); 6394 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6395 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6396 if (hci_extended_advertising_supported()){ 6397 hci_stack->le_advertising_set_in_current_command = 0; 6398 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6399 } else 6400 #endif 6401 { 6402 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6403 } 6404 return true; 6405 } 6406 6407 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6408 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6409 uint8_t scan_data_clean[31]; 6410 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6411 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6412 hci_stack->le_scan_response_data_len); 6413 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6414 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6415 if (hci_extended_advertising_supported()){ 6416 hci_stack->le_advertising_set_in_current_command = 0; 6417 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6418 } else 6419 #endif 6420 { 6421 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6422 } 6423 return true; 6424 } 6425 6426 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6427 if (hci_extended_advertising_supported()) { 6428 btstack_linked_list_iterator_t it; 6429 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6430 while (btstack_linked_list_iterator_has_next(&it)){ 6431 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6432 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6433 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6434 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6435 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6436 return true; 6437 } 6438 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6439 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6440 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6441 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6442 advertising_set->advertising_handle, 6443 advertising_set->extended_params.advertising_event_properties, 6444 advertising_set->extended_params.primary_advertising_interval_min, 6445 advertising_set->extended_params.primary_advertising_interval_max, 6446 advertising_set->extended_params.primary_advertising_channel_map, 6447 advertising_set->extended_params.own_address_type, 6448 advertising_set->extended_params.peer_address_type, 6449 advertising_set->extended_params.peer_address, 6450 advertising_set->extended_params.advertising_filter_policy, 6451 advertising_set->extended_params.advertising_tx_power, 6452 advertising_set->extended_params.primary_advertising_phy, 6453 advertising_set->extended_params.secondary_advertising_max_skip, 6454 advertising_set->extended_params.secondary_advertising_phy, 6455 advertising_set->extended_params.advertising_sid, 6456 advertising_set->extended_params.scan_request_notification_enable 6457 ); 6458 return true; 6459 } 6460 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6461 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6462 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6463 return true; 6464 } 6465 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6466 uint16_t pos = advertising_set->adv_data_pos; 6467 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6468 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6469 if ((operation & 0x02) != 0){ 6470 // last fragment or complete data 6471 operation |= 2; 6472 advertising_set->adv_data_pos = 0; 6473 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6474 } else { 6475 advertising_set->adv_data_pos += data_to_upload; 6476 } 6477 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6478 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6479 return true; 6480 } 6481 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6482 uint16_t pos = advertising_set->scan_data_pos; 6483 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6484 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6485 if ((operation & 0x02) != 0){ 6486 advertising_set->scan_data_pos = 0; 6487 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6488 } else { 6489 advertising_set->scan_data_pos += data_to_upload; 6490 } 6491 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6492 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6493 return true; 6494 } 6495 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6496 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6497 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6498 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6499 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6500 advertising_set->advertising_handle, 6501 advertising_set->periodic_params.periodic_advertising_interval_min, 6502 advertising_set->periodic_params.periodic_advertising_interval_max, 6503 advertising_set->periodic_params.periodic_advertising_properties); 6504 return true; 6505 } 6506 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6507 uint16_t pos = advertising_set->periodic_data_pos; 6508 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6509 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6510 if ((operation & 0x02) != 0){ 6511 // last fragment or complete data 6512 operation |= 2; 6513 advertising_set->periodic_data_pos = 0; 6514 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6515 } else { 6516 advertising_set->periodic_data_pos += data_to_upload; 6517 } 6518 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6519 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6520 return true; 6521 } 6522 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6523 } 6524 } 6525 #endif 6526 6527 #endif 6528 6529 #ifdef ENABLE_LE_CENTRAL 6530 // if connect with whitelist was active and is not cancelled yet, wait until next time 6531 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6532 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6533 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6534 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6535 #endif 6536 #endif 6537 6538 // LE Whitelist Management 6539 if (whitelist_modification_pending){ 6540 // add/remove entries 6541 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6542 while (btstack_linked_list_iterator_has_next(&lit)){ 6543 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6544 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6545 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6546 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6547 bd_addr_type_t address_type = entry->address_type; 6548 bd_addr_t address; 6549 memcpy(address, entry->address, 6); 6550 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6551 // remove from whitelist if not scheduled for re-addition 6552 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6553 btstack_memory_whitelist_entry_free(entry); 6554 } 6555 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6556 return true; 6557 } 6558 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6559 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6560 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6561 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6562 return true; 6563 } 6564 } 6565 } 6566 6567 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6568 // LE Resolving List Management 6569 if (resolving_list_supported) { 6570 uint16_t i; 6571 switch (hci_stack->le_resolving_list_state) { 6572 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6573 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6574 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6575 return true; 6576 case LE_RESOLVING_LIST_READ_SIZE: 6577 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6578 hci_send_cmd(&hci_le_read_resolving_list_size); 6579 return true; 6580 case LE_RESOLVING_LIST_SEND_CLEAR: 6581 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6582 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6583 sizeof(hci_stack->le_resolving_list_add_entries)); 6584 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6585 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6586 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6587 sizeof(hci_stack->le_resolving_list_remove_entries)); 6588 hci_send_cmd(&hci_le_clear_resolving_list); 6589 return true; 6590 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6591 // first remove old entries 6592 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6593 uint8_t offset = i >> 3; 6594 uint8_t mask = 1 << (i & 7); 6595 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6596 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6597 bd_addr_t peer_identity_addreses; 6598 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6599 sm_key_t peer_irk; 6600 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6601 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6602 6603 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6604 // trigger whitelist entry 'update' (work around for controller bug) 6605 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6606 while (btstack_linked_list_iterator_has_next(&lit)) { 6607 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6608 if (entry->address_type != peer_identity_addr_type) continue; 6609 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6610 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6611 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6612 } 6613 #endif 6614 6615 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6616 peer_identity_addreses); 6617 return true; 6618 } 6619 6620 // then add new entries 6621 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6622 uint8_t offset = i >> 3; 6623 uint8_t mask = 1 << (i & 7); 6624 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6625 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6626 bd_addr_t peer_identity_addreses; 6627 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6628 sm_key_t peer_irk; 6629 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6630 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6631 if (btstack_is_null(peer_irk, 16)) continue; 6632 const uint8_t *local_irk = gap_get_persistent_irk(); 6633 // command uses format specifier 'P' that stores 16-byte value without flip 6634 uint8_t local_irk_flipped[16]; 6635 uint8_t peer_irk_flipped[16]; 6636 reverse_128(local_irk, local_irk_flipped); 6637 reverse_128(peer_irk, peer_irk_flipped); 6638 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6639 peer_irk_flipped, local_irk_flipped); 6640 return true; 6641 } 6642 6643 // finally, set privacy mode 6644 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6645 uint8_t offset = i >> 3; 6646 uint8_t mask = 1 << (i & 7); 6647 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6648 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6649 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6650 // Network Privacy Mode is default 6651 continue; 6652 } 6653 bd_addr_t peer_identity_address; 6654 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6655 sm_key_t peer_irk; 6656 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6657 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6658 if (btstack_is_null(peer_irk, 16)) continue; 6659 // command uses format specifier 'P' that stores 16-byte value without flip 6660 uint8_t peer_irk_flipped[16]; 6661 reverse_128(peer_irk, peer_irk_flipped); 6662 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6663 return true; 6664 } 6665 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6666 break; 6667 6668 default: 6669 break; 6670 } 6671 } 6672 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6673 #endif 6674 6675 #ifdef ENABLE_LE_CENTRAL 6676 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6677 // LE Whitelist Management 6678 if (periodic_list_modification_pending){ 6679 // add/remove entries 6680 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6681 while (btstack_linked_list_iterator_has_next(&lit)){ 6682 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6683 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6684 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6685 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6686 return true; 6687 } 6688 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6689 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6690 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6691 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6692 return true; 6693 } 6694 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6695 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6696 btstack_memory_periodic_advertiser_list_entry_free(entry); 6697 } 6698 } 6699 } 6700 #endif 6701 #endif 6702 6703 #ifdef ENABLE_LE_CENTRAL 6704 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6705 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6706 if (hci_stack->le_past_set_default_params){ 6707 hci_stack->le_past_set_default_params = false; 6708 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6709 hci_stack->le_past_mode, 6710 hci_stack->le_past_skip, 6711 hci_stack->le_past_sync_timeout, 6712 hci_stack->le_past_cte_type); 6713 return true; 6714 } 6715 #endif 6716 #endif 6717 #endif 6718 6719 // post-pone all actions until stack is fully working 6720 if (hci_stack->state != HCI_STATE_WORKING) return false; 6721 6722 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6723 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6724 6725 // Phase 4: restore state 6726 6727 #ifdef ENABLE_LE_CENTRAL 6728 // re-start scanning 6729 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6730 hci_stack->le_scanning_active = true; 6731 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6732 if (hci_extended_advertising_supported()){ 6733 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6734 } else 6735 #endif 6736 { 6737 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6738 } 6739 return true; 6740 } 6741 #endif 6742 6743 #ifdef ENABLE_LE_CENTRAL 6744 // re-start connecting 6745 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6746 bd_addr_t null_addr; 6747 memset(null_addr, 0, 6); 6748 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6749 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6750 hci_send_le_create_connection(1, 0, null_addr); 6751 return true; 6752 } 6753 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6754 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6755 switch(hci_stack->le_periodic_sync_request){ 6756 case LE_CONNECTING_DIRECT: 6757 case LE_CONNECTING_WHITELIST: 6758 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6759 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6760 hci_stack->le_periodic_sync_options, 6761 hci_stack->le_periodic_sync_advertising_sid, 6762 hci_stack->le_periodic_sync_advertiser_address_type, 6763 hci_stack->le_periodic_sync_advertiser_address, 6764 hci_stack->le_periodic_sync_skip, 6765 hci_stack->le_periodic_sync_timeout, 6766 hci_stack->le_periodic_sync_cte_type); 6767 return true; 6768 default: 6769 break; 6770 } 6771 } 6772 #endif 6773 #endif 6774 6775 #ifdef ENABLE_LE_PERIPHERAL 6776 // re-start advertising 6777 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6778 // check if advertisements should be enabled given 6779 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6780 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6781 6782 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6783 if (hci_extended_advertising_supported()){ 6784 const uint8_t advertising_handles[] = { 0 }; 6785 const uint16_t durations[] = { 0 }; 6786 const uint16_t max_events[] = { 0 }; 6787 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6788 } else 6789 #endif 6790 { 6791 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6792 } 6793 return true; 6794 } 6795 6796 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6797 if (hci_extended_advertising_supported()) { 6798 btstack_linked_list_iterator_t it; 6799 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6800 while (btstack_linked_list_iterator_has_next(&it)) { 6801 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6802 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6803 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6804 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6805 const uint16_t durations[] = { advertising_set->enable_timeout }; 6806 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6807 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6808 return true; 6809 } 6810 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6811 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6812 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6813 uint8_t enable = 1; 6814 if (advertising_set->periodic_include_adi){ 6815 enable |= 2; 6816 } 6817 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6818 return true; 6819 } 6820 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6821 } 6822 } 6823 #endif 6824 #endif 6825 6826 return false; 6827 } 6828 6829 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6830 static bool hci_run_iso_tasks(void){ 6831 btstack_linked_list_iterator_t it; 6832 6833 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6834 return false; 6835 } 6836 6837 // BIG 6838 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6839 while (btstack_linked_list_iterator_has_next(&it)){ 6840 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6841 switch (big->state){ 6842 case LE_AUDIO_BIG_STATE_CREATE: 6843 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6844 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6845 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6846 hci_send_cmd(&hci_le_create_big, 6847 big->params->big_handle, 6848 big->params->advertising_handle, 6849 big->params->num_bis, 6850 big->params->sdu_interval_us, 6851 big->params->max_sdu, 6852 big->params->max_transport_latency_ms, 6853 big->params->rtn, 6854 big->params->phy, 6855 big->params->packing, 6856 big->params->framing, 6857 big->params->encryption, 6858 big->params->broadcast_code); 6859 return true; 6860 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6861 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6862 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); 6863 return true; 6864 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6865 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6866 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6867 return true; 6868 case LE_AUDIO_BIG_STATE_TERMINATE: 6869 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6870 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6871 return true; 6872 default: 6873 break; 6874 } 6875 } 6876 6877 // BIG Sync 6878 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6879 while (btstack_linked_list_iterator_has_next(&it)){ 6880 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6881 switch (big_sync->state){ 6882 case LE_AUDIO_BIG_STATE_CREATE: 6883 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6884 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6885 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6886 hci_send_cmd(&hci_le_big_create_sync, 6887 big_sync->params->big_handle, 6888 big_sync->params->sync_handle, 6889 big_sync->params->encryption, 6890 big_sync->params->broadcast_code, 6891 big_sync->params->mse, 6892 big_sync->params->big_sync_timeout_10ms, 6893 big_sync->params->num_bis, 6894 big_sync->params->bis_indices); 6895 return true; 6896 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6897 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6898 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); 6899 return true; 6900 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6901 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6902 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6903 return true; 6904 case LE_AUDIO_BIG_STATE_TERMINATE: 6905 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6906 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6907 return true; 6908 default: 6909 break; 6910 } 6911 } 6912 6913 // CIG 6914 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6915 while (btstack_linked_list_iterator_has_next(&it)) { 6916 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6917 uint8_t i; 6918 // Set CIG Parameters 6919 uint8_t cis_id[MAX_NR_CIS]; 6920 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6921 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6922 uint8_t phy_c_to_p[MAX_NR_CIS]; 6923 uint8_t phy_p_to_c[MAX_NR_CIS]; 6924 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6925 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6926 switch (cig->state) { 6927 case LE_AUDIO_CIG_STATE_CREATE: 6928 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6929 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6930 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6931 le_audio_cig_params_t * params = cig->params; 6932 for (i = 0; i < params->num_cis; i++) { 6933 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6934 cis_id[i] = cis_params->cis_id; 6935 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6936 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6937 phy_c_to_p[i] = cis_params->phy_c_to_p; 6938 phy_p_to_c[i] = cis_params->phy_p_to_c; 6939 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6940 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6941 } 6942 hci_send_cmd(&hci_le_set_cig_parameters, 6943 cig->cig_id, 6944 params->sdu_interval_c_to_p, 6945 params->sdu_interval_p_to_c, 6946 params->worst_case_sca, 6947 params->packing, 6948 params->framing, 6949 params->max_transport_latency_c_to_p, 6950 params->max_transport_latency_p_to_c, 6951 params->num_cis, 6952 cis_id, 6953 max_sdu_c_to_p, 6954 max_sdu_p_to_c, 6955 phy_c_to_p, 6956 phy_p_to_c, 6957 rtn_c_to_p, 6958 rtn_p_to_c 6959 ); 6960 return true; 6961 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6962 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6963 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6964 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6965 for (i=0;i<cig->num_cis;i++){ 6966 cig->cis_setup_active[i] = true; 6967 } 6968 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6969 return true; 6970 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6971 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6972 // find next path to setup 6973 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6974 if (cig->cis_established[cis_index] == false) { 6975 continue; 6976 } 6977 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6978 bool setup = true; 6979 if (cis_direction == 0){ 6980 // 0 - input - host to controller 6981 // we are central => central to peripheral 6982 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6983 } else { 6984 // 1 - output - controller to host 6985 // we are central => peripheral to central 6986 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6987 } 6988 if (setup){ 6989 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6990 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6991 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6992 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); 6993 return true; 6994 } 6995 cig->state_vars.next_cis++; 6996 } 6997 // emit done 6998 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6999 default: 7000 break; 7001 } 7002 } 7003 7004 // CIS Accept/Reject 7005 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7006 while (btstack_linked_list_iterator_has_next(&it)) { 7007 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7008 hci_con_handle_t con_handle; 7009 switch (iso_stream->state){ 7010 case HCI_ISO_STREAM_W2_ACCEPT: 7011 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7012 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7013 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7014 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7015 return true; 7016 case HCI_ISO_STREAM_W2_REJECT: 7017 con_handle = iso_stream->cis_handle; 7018 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7019 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7020 hci_iso_stream_finalize(iso_stream); 7021 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7022 return true; 7023 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7024 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7025 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7026 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7027 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); 7028 break; 7029 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7030 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7031 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7032 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7033 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); 7034 break; 7035 default: 7036 break; 7037 } 7038 } 7039 7040 return false; 7041 } 7042 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7043 #endif 7044 7045 static bool hci_run_general_pending_commands(void){ 7046 btstack_linked_item_t * it; 7047 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7048 hci_connection_t * connection = (hci_connection_t *) it; 7049 7050 switch(connection->state){ 7051 case SEND_CREATE_CONNECTION: 7052 switch(connection->address_type){ 7053 #ifdef ENABLE_CLASSIC 7054 case BD_ADDR_TYPE_ACL: 7055 log_info("sending hci_create_connection"); 7056 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7057 break; 7058 #endif 7059 default: 7060 #ifdef ENABLE_BLE 7061 #ifdef ENABLE_LE_CENTRAL 7062 log_info("sending hci_le_create_connection"); 7063 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7064 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7065 hci_send_le_create_connection(0, connection->address_type, connection->address); 7066 connection->state = SENT_CREATE_CONNECTION; 7067 #endif 7068 #endif 7069 break; 7070 } 7071 return true; 7072 7073 #ifdef ENABLE_CLASSIC 7074 case RECEIVED_CONNECTION_REQUEST: 7075 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7076 log_info("sending hci_accept_connection_request"); 7077 connection->state = ACCEPTED_CONNECTION_REQUEST; 7078 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7079 return true; 7080 } 7081 break; 7082 #endif 7083 case SEND_DISCONNECT: 7084 connection->state = SENT_DISCONNECT; 7085 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7086 return true; 7087 7088 default: 7089 break; 7090 } 7091 7092 // no further commands if connection is about to get shut down 7093 if (connection->state == SENT_DISCONNECT) continue; 7094 7095 #ifdef ENABLE_CLASSIC 7096 7097 // Handling link key request requires remote supported features 7098 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7099 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7100 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7101 7102 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7103 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7104 if (have_link_key && security_level_sufficient){ 7105 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7106 } else { 7107 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7108 } 7109 return true; 7110 } 7111 7112 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7113 log_info("denying to pin request"); 7114 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7115 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7116 return true; 7117 } 7118 7119 // security assessment requires remote features 7120 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7121 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7122 hci_ssp_assess_security_on_io_cap_request(connection); 7123 // 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 7124 } 7125 7126 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7127 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7128 // set authentication requirements: 7129 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7130 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7131 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7132 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7133 authreq |= 1; 7134 } 7135 bool bonding = hci_stack->bondable; 7136 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7137 // if we have received IO Cap Response, we're in responder role 7138 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7139 if (bonding && !remote_bonding){ 7140 log_info("Remote not bonding, dropping local flag"); 7141 bonding = false; 7142 } 7143 } 7144 if (bonding){ 7145 if (connection->bonding_flags & BONDING_DEDICATED){ 7146 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7147 } else { 7148 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7149 } 7150 } 7151 uint8_t have_oob_data = 0; 7152 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7153 if (connection->classic_oob_c_192 != NULL){ 7154 have_oob_data |= 1; 7155 } 7156 if (connection->classic_oob_c_256 != NULL){ 7157 have_oob_data |= 2; 7158 } 7159 #endif 7160 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7161 return true; 7162 } 7163 7164 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7165 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7166 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7167 return true; 7168 } 7169 7170 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7171 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7172 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7173 const uint8_t zero[16] = { 0 }; 7174 const uint8_t * r_192 = zero; 7175 const uint8_t * c_192 = zero; 7176 const uint8_t * r_256 = zero; 7177 const uint8_t * c_256 = zero; 7178 // verify P-256 OOB 7179 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7180 c_256 = connection->classic_oob_c_256; 7181 if (connection->classic_oob_r_256 != NULL) { 7182 r_256 = connection->classic_oob_r_256; 7183 } 7184 } 7185 // verify P-192 OOB 7186 if ((connection->classic_oob_c_192 != NULL)) { 7187 c_192 = connection->classic_oob_c_192; 7188 if (connection->classic_oob_r_192 != NULL) { 7189 r_192 = connection->classic_oob_r_192; 7190 } 7191 } 7192 7193 // assess security 7194 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7195 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7196 if (need_level_4 && !can_reach_level_4){ 7197 log_info("Level 4 required, but not possible -> abort"); 7198 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7199 // send oob negative reply 7200 c_256 = NULL; 7201 c_192 = NULL; 7202 } 7203 7204 // Reply 7205 if (c_256 != zero) { 7206 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7207 } else if (c_192 != zero){ 7208 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7209 } else { 7210 hci_stack->classic_oob_con_handle = connection->con_handle; 7211 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7212 } 7213 return true; 7214 } 7215 #endif 7216 7217 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7218 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7219 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7220 return true; 7221 } 7222 7223 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7224 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7225 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7226 return true; 7227 } 7228 7229 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7230 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7231 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7232 return true; 7233 } 7234 7235 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7236 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7237 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7238 connection->state = SENT_DISCONNECT; 7239 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7240 return true; 7241 } 7242 7243 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7244 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7245 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7246 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7247 return true; 7248 } 7249 7250 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7251 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7252 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7253 return true; 7254 } 7255 7256 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7257 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7258 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7259 return true; 7260 } 7261 7262 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7263 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7264 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7265 return true; 7266 } 7267 7268 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7269 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7270 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7271 return true; 7272 } 7273 7274 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7275 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7276 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7277 return true; 7278 } 7279 #endif 7280 7281 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7282 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7283 #ifdef ENABLE_CLASSIC 7284 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7285 #endif 7286 if (connection->state != SENT_DISCONNECT){ 7287 connection->state = SENT_DISCONNECT; 7288 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7289 return true; 7290 } 7291 } 7292 7293 #ifdef ENABLE_CLASSIC 7294 uint16_t sniff_min_interval; 7295 switch (connection->sniff_min_interval){ 7296 case 0: 7297 break; 7298 case 0xffff: 7299 connection->sniff_min_interval = 0; 7300 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7301 return true; 7302 default: 7303 sniff_min_interval = connection->sniff_min_interval; 7304 connection->sniff_min_interval = 0; 7305 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7306 return true; 7307 } 7308 7309 if (connection->sniff_subrating_max_latency != 0xffff){ 7310 uint16_t max_latency = connection->sniff_subrating_max_latency; 7311 connection->sniff_subrating_max_latency = 0; 7312 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7313 return true; 7314 } 7315 7316 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7317 uint8_t service_type = (uint8_t) connection->qos_service_type; 7318 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7319 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); 7320 return true; 7321 } 7322 7323 if (connection->request_role != HCI_ROLE_INVALID){ 7324 hci_role_t role = connection->request_role; 7325 connection->request_role = HCI_ROLE_INVALID; 7326 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7327 return true; 7328 } 7329 #endif 7330 7331 if (connection->gap_connection_tasks != 0){ 7332 #ifdef ENABLE_CLASSIC 7333 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7334 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7335 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7336 return true; 7337 } 7338 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7339 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7340 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7341 return true; 7342 } 7343 #endif 7344 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7345 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7346 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7347 return true; 7348 } 7349 #ifdef ENABLE_BLE 7350 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7351 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7352 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7353 return true; 7354 } 7355 #endif 7356 } 7357 7358 #ifdef ENABLE_BLE 7359 switch (connection->le_con_parameter_update_state){ 7360 // response to L2CAP CON PARAMETER UPDATE REQUEST 7361 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7362 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7363 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7364 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7365 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7366 return true; 7367 case CON_PARAMETER_UPDATE_REPLY: 7368 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7369 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7370 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7371 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7372 return true; 7373 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7374 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7375 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7376 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7377 return true; 7378 default: 7379 break; 7380 } 7381 if (connection->le_phy_update_all_phys != 0xffu){ 7382 uint8_t all_phys = connection->le_phy_update_all_phys; 7383 connection->le_phy_update_all_phys = 0xff; 7384 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); 7385 return true; 7386 } 7387 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7388 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7389 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7390 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7391 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7392 return true; 7393 } 7394 if (connection->le_past_advertising_handle != 0xff){ 7395 uint8_t advertising_handle = connection->le_past_advertising_handle; 7396 connection->le_past_advertising_handle = 0xff; 7397 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7398 return true; 7399 } 7400 #endif 7401 #endif 7402 } 7403 return false; 7404 } 7405 7406 static void hci_run(void){ 7407 7408 // stack state sub statemachines 7409 switch (hci_stack->state) { 7410 case HCI_STATE_INITIALIZING: 7411 hci_initializing_run(); 7412 break; 7413 case HCI_STATE_HALTING: 7414 hci_halting_run(); 7415 break; 7416 case HCI_STATE_FALLING_ASLEEP: 7417 hci_falling_asleep_run(); 7418 break; 7419 default: 7420 break; 7421 } 7422 7423 // allow to run after initialization to working transition 7424 if (hci_stack->state != HCI_STATE_WORKING){ 7425 return; 7426 } 7427 7428 bool done; 7429 7430 // send continuation fragments first, as they block the prepared packet buffer 7431 done = hci_run_acl_fragments(); 7432 if (done) return; 7433 7434 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7435 done = hci_run_iso_fragments(); 7436 if (done) return; 7437 #endif 7438 7439 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7440 // send host num completed packets next as they don't require num_cmd_packets > 0 7441 if (!hci_can_send_comand_packet_transport()) return; 7442 if (hci_stack->host_completed_packets){ 7443 hci_host_num_completed_packets(); 7444 return; 7445 } 7446 #endif 7447 7448 if (!hci_can_send_command_packet_now()) return; 7449 7450 // global/non-connection oriented commands 7451 7452 7453 #ifdef ENABLE_CLASSIC 7454 // general gap classic 7455 done = hci_run_general_gap_classic(); 7456 if (done) return; 7457 #endif 7458 7459 #ifdef ENABLE_BLE 7460 // general gap le 7461 done = hci_run_general_gap_le(); 7462 if (done) return; 7463 7464 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7465 // ISO related tasks, e.g. BIG create/terminate/sync 7466 done = hci_run_iso_tasks(); 7467 if (done) return; 7468 #endif 7469 #endif 7470 7471 // send pending HCI commands 7472 hci_run_general_pending_commands(); 7473 } 7474 7475 #ifdef ENABLE_CLASSIC 7476 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7477 // bits 6-9 are 'don't use' 7478 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7479 7480 // restrict packet types to local and remote supported 7481 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7482 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7483 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7484 } 7485 #endif 7486 7487 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7488 // house-keeping 7489 7490 #ifdef ENABLE_CLASSIC 7491 bd_addr_t addr; 7492 hci_connection_t * conn; 7493 #endif 7494 #ifdef ENABLE_LE_CENTRAL 7495 uint8_t initiator_filter_policy; 7496 #endif 7497 7498 uint16_t opcode = little_endian_read_16(packet, 0); 7499 switch (opcode) { 7500 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7501 hci_stack->loopback_mode = packet[3]; 7502 break; 7503 7504 #ifdef ENABLE_CLASSIC 7505 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7506 reverse_bd_addr(&packet[3], addr); 7507 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7508 7509 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7510 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7511 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7512 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7513 } 7514 7515 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7516 if (!conn) { 7517 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7518 if (!conn) { 7519 // notify client that alloc failed 7520 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7521 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7522 } 7523 conn->state = SEND_CREATE_CONNECTION; 7524 } 7525 7526 log_info("conn state %u", conn->state); 7527 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7528 switch (conn->state) { 7529 // if connection active exists 7530 case OPEN: 7531 // and OPEN, emit connection complete command 7532 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7533 // packet not sent to controller 7534 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7535 case RECEIVED_DISCONNECTION_COMPLETE: 7536 // create connection triggered in disconnect complete event, let's do it now 7537 break; 7538 case SEND_CREATE_CONNECTION: 7539 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7540 if (hci_classic_operation_active()){ 7541 return ERROR_CODE_SUCCESS; 7542 } 7543 #endif 7544 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7545 break; 7546 default: 7547 // otherwise, just ignore as it is already in the open process 7548 // packet not sent to controller 7549 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7550 } 7551 conn->state = SENT_CREATE_CONNECTION; 7552 7553 // track outgoing connection 7554 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7555 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7556 break; 7557 7558 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7559 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7560 if (conn == NULL) { 7561 // neither SCO nor ACL connection for con handle 7562 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7563 } else { 7564 uint16_t remote_supported_sco_packets; 7565 switch (conn->address_type){ 7566 case BD_ADDR_TYPE_ACL: 7567 // assert SCO connection does not exit 7568 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7569 return ERROR_CODE_COMMAND_DISALLOWED; 7570 } 7571 // cache remote sco packet types 7572 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7573 7574 // allocate connection struct 7575 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7576 HCI_ROLE_MASTER); 7577 if (!conn) { 7578 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7579 } 7580 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7581 break; 7582 case BD_ADDR_TYPE_SCO: 7583 // update of existing SCO connection 7584 break; 7585 default: 7586 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7587 } 7588 } 7589 7590 // conn refers to hci connection of type sco now 7591 7592 conn->state = SENT_CREATE_CONNECTION; 7593 7594 // track outgoing connection to handle command status with error 7595 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7596 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7597 7598 // setup_synchronous_connection? Voice setting at offset 22 7599 // TODO: compare to current setting if sco connection already active 7600 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7601 7602 // derive sco payload length from packet types 7603 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7604 break; 7605 7606 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7607 // get SCO connection 7608 reverse_bd_addr(&packet[3], addr); 7609 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7610 if (conn == NULL){ 7611 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7612 } 7613 7614 conn->state = ACCEPTED_CONNECTION_REQUEST; 7615 7616 // track outgoing connection to handle command status with error 7617 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7618 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7619 7620 // accept_synchronous_connection? Voice setting at offset 18 7621 // TODO: compare to current setting if sco connection already active 7622 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7623 7624 // derive sco payload length from packet types 7625 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7626 break; 7627 #endif 7628 7629 #ifdef ENABLE_BLE 7630 #ifdef ENABLE_LE_CENTRAL 7631 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7632 // white list used? 7633 initiator_filter_policy = packet[7]; 7634 switch (initiator_filter_policy) { 7635 case 0: 7636 // whitelist not used 7637 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7638 break; 7639 case 1: 7640 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7641 break; 7642 default: 7643 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7644 break; 7645 } 7646 // track outgoing connection 7647 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7648 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7649 break; 7650 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7651 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7652 // white list used? 7653 initiator_filter_policy = packet[3]; 7654 switch (initiator_filter_policy) { 7655 case 0: 7656 // whitelist not used 7657 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7658 break; 7659 case 1: 7660 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7661 break; 7662 default: 7663 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7664 break; 7665 } 7666 // track outgoing connection 7667 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7668 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7669 break; 7670 #endif 7671 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7672 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7673 break; 7674 #endif 7675 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7676 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7677 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7678 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7679 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7680 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7681 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7682 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7683 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7684 case HCI_OPCODE_HCI_LE_READ_PHY: 7685 case HCI_OPCODE_HCI_LE_SET_PHY: 7686 // conection handle is first command parameter 7687 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7688 break; 7689 #endif 7690 #endif /* ENABLE_BLE */ 7691 default: 7692 break; 7693 } 7694 7695 hci_stack->num_cmd_packets--; 7696 7697 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7698 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7699 if (err != 0){ 7700 return ERROR_CODE_HARDWARE_FAILURE; 7701 } 7702 return ERROR_CODE_SUCCESS; 7703 } 7704 7705 // disconnect because of security block 7706 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7707 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7708 if (!connection) return; 7709 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7710 } 7711 7712 7713 // Configure Secure Simple Pairing 7714 7715 #ifdef ENABLE_CLASSIC 7716 7717 // enable will enable SSP during init 7718 void gap_ssp_set_enable(int enable){ 7719 hci_stack->ssp_enable = enable; 7720 } 7721 7722 static int hci_local_ssp_activated(void){ 7723 return gap_ssp_supported() && hci_stack->ssp_enable; 7724 } 7725 7726 // if set, BTstack will respond to io capability request using authentication requirement 7727 void gap_ssp_set_io_capability(int io_capability){ 7728 hci_stack->ssp_io_capability = io_capability; 7729 } 7730 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7731 hci_stack->ssp_authentication_requirement = authentication_requirement; 7732 } 7733 7734 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7735 void gap_ssp_set_auto_accept(int auto_accept){ 7736 hci_stack->ssp_auto_accept = auto_accept; 7737 } 7738 7739 void gap_secure_connections_enable(bool enable){ 7740 hci_stack->secure_connections_enable = enable; 7741 } 7742 bool gap_secure_connections_active(void){ 7743 return hci_stack->secure_connections_active; 7744 } 7745 7746 #endif 7747 7748 // va_list part of hci_send_cmd 7749 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7750 if (!hci_can_send_command_packet_now()){ 7751 log_error("hci_send_cmd called but cannot send packet now"); 7752 return ERROR_CODE_COMMAND_DISALLOWED; 7753 } 7754 7755 // for HCI INITIALIZATION 7756 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7757 hci_stack->last_cmd_opcode = cmd->opcode; 7758 7759 hci_reserve_packet_buffer(); 7760 uint8_t * packet = hci_stack->hci_packet_buffer; 7761 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7762 uint8_t status = hci_send_cmd_packet(packet, size); 7763 7764 // release packet buffer on error or for synchronous transport implementations 7765 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7766 hci_release_packet_buffer(); 7767 hci_emit_transport_packet_sent(); 7768 } 7769 7770 return status; 7771 } 7772 7773 /** 7774 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7775 */ 7776 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7777 va_list argptr; 7778 va_start(argptr, cmd); 7779 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7780 va_end(argptr); 7781 return status; 7782 } 7783 7784 // Create various non-HCI events. 7785 // TODO: generalize, use table similar to hci_create_command 7786 7787 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7788 // dump packet 7789 if (dump) { 7790 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7791 } 7792 7793 // dispatch to all event handlers 7794 btstack_linked_list_iterator_t it; 7795 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7796 while (btstack_linked_list_iterator_has_next(&it)){ 7797 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7798 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7799 } 7800 } 7801 7802 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7803 if (!hci_stack->acl_packet_handler) return; 7804 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7805 } 7806 7807 #ifdef ENABLE_CLASSIC 7808 static void hci_notify_if_sco_can_send_now(void){ 7809 // notify SCO sender if waiting 7810 if (!hci_stack->sco_waiting_for_can_send_now) return; 7811 if (hci_can_send_sco_packet_now()){ 7812 hci_stack->sco_waiting_for_can_send_now = 0; 7813 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7814 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7815 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7816 } 7817 } 7818 7819 // parsing end emitting has been merged to reduce code size 7820 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7821 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7822 7823 uint8_t * eir_data; 7824 ad_context_t context; 7825 const uint8_t * name; 7826 uint8_t name_len; 7827 7828 if (size < 3) return; 7829 7830 int event_type = hci_event_packet_get_type(packet); 7831 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7832 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7833 7834 switch (event_type){ 7835 case HCI_EVENT_INQUIRY_RESULT: 7836 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7837 if (size != (3 + (num_responses * 14))) return; 7838 break; 7839 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7840 if (size != 257) return; 7841 if (num_responses != 1) return; 7842 break; 7843 default: 7844 return; 7845 } 7846 7847 // event[1] is set at the end 7848 int i; 7849 for (i=0; i<num_responses;i++){ 7850 memset(event, 0, sizeof(event)); 7851 event[0] = GAP_EVENT_INQUIRY_RESULT; 7852 uint8_t event_size = 27; // if name is not set by EIR 7853 7854 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7855 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7856 (void)memcpy(&event[9], 7857 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7858 3); // class of device 7859 (void)memcpy(&event[12], 7860 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7861 2); // clock offset 7862 7863 switch (event_type){ 7864 case HCI_EVENT_INQUIRY_RESULT: 7865 // 14,15,16,17 = 0, size 18 7866 break; 7867 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7868 event[14] = 1; 7869 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7870 // 16,17 = 0, size 18 7871 break; 7872 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7873 event[14] = 1; 7874 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7875 // EIR packets only contain a single inquiry response 7876 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7877 name = NULL; 7878 // Iterate over EIR data 7879 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7880 uint8_t data_type = ad_iterator_get_data_type(&context); 7881 uint8_t data_size = ad_iterator_get_data_len(&context); 7882 const uint8_t * data = ad_iterator_get_data(&context); 7883 // Prefer Complete Local Name over Shortened Local Name 7884 switch (data_type){ 7885 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7886 if (name) continue; 7887 /* fall through */ 7888 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7889 name = data; 7890 name_len = data_size; 7891 break; 7892 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7893 if (data_size != 8) break; 7894 event[16] = 1; 7895 memcpy(&event[17], data, 8); 7896 break; 7897 default: 7898 break; 7899 } 7900 } 7901 if (name){ 7902 event[25] = 1; 7903 // truncate name if needed 7904 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7905 event[26] = len; 7906 (void)memcpy(&event[27], name, len); 7907 event_size += len; 7908 } 7909 break; 7910 default: 7911 return; 7912 } 7913 event[1] = event_size - 2; 7914 hci_emit_event(event, event_size, 1); 7915 } 7916 } 7917 #endif 7918 7919 void hci_emit_state(void){ 7920 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7921 uint8_t event[3]; 7922 event[0] = BTSTACK_EVENT_STATE; 7923 event[1] = sizeof(event) - 2u; 7924 event[2] = hci_stack->state; 7925 hci_emit_event(event, sizeof(event), 1); 7926 } 7927 7928 #ifdef ENABLE_CLASSIC 7929 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7930 uint8_t event[13]; 7931 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7932 event[1] = sizeof(event) - 2; 7933 event[2] = status; 7934 little_endian_store_16(event, 3, con_handle); 7935 reverse_bd_addr(address, &event[5]); 7936 event[11] = 1; // ACL connection 7937 event[12] = 0; // encryption disabled 7938 hci_emit_event(event, sizeof(event), 1); 7939 } 7940 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7941 if (disable_l2cap_timeouts) return; 7942 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7943 uint8_t event[4]; 7944 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7945 event[1] = sizeof(event) - 2; 7946 little_endian_store_16(event, 2, conn->con_handle); 7947 hci_emit_event(event, sizeof(event), 1); 7948 } 7949 #endif 7950 7951 #ifdef ENABLE_BLE 7952 #ifdef ENABLE_LE_CENTRAL 7953 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){ 7954 uint8_t hci_event[21]; 7955 hci_event[0] = HCI_EVENT_LE_META; 7956 hci_event[1] = sizeof(hci_event) - 2u; 7957 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7958 hci_event[3] = status; 7959 little_endian_store_16(hci_event, 4, con_handle); 7960 hci_event[6] = 0; // TODO: role 7961 hci_event[7] = address_type; 7962 reverse_bd_addr(address, &hci_event[8]); 7963 little_endian_store_16(hci_event, 14, 0); // interval 7964 little_endian_store_16(hci_event, 16, 0); // latency 7965 little_endian_store_16(hci_event, 18, 0); // supervision timeout 7966 hci_event[20] = 0; // master clock accuracy 7967 hci_emit_event(hci_event, sizeof(hci_event), 1); 7968 // emit GAP event, too 7969 uint8_t gap_event[36]; 7970 hci_create_gap_connection_complete_event(hci_event, gap_event); 7971 hci_emit_event(gap_event, sizeof(gap_event), 1); 7972 } 7973 #endif 7974 #endif 7975 7976 static void hci_emit_transport_packet_sent(void){ 7977 // notify upper stack that it might be possible to send again 7978 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7979 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7980 } 7981 7982 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7983 uint8_t event[6]; 7984 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7985 event[1] = sizeof(event) - 2u; 7986 event[2] = 0; // status = OK 7987 little_endian_store_16(event, 3, con_handle); 7988 event[5] = reason; 7989 hci_emit_event(event, sizeof(event), 1); 7990 } 7991 7992 static void hci_emit_nr_connections_changed(void){ 7993 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7994 uint8_t event[3]; 7995 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7996 event[1] = sizeof(event) - 2u; 7997 event[2] = nr_hci_connections(); 7998 hci_emit_event(event, sizeof(event), 1); 7999 } 8000 8001 static void hci_emit_hci_open_failed(void){ 8002 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8003 uint8_t event[2]; 8004 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8005 event[1] = sizeof(event) - 2u; 8006 hci_emit_event(event, sizeof(event), 1); 8007 } 8008 8009 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8010 log_info("hci_emit_dedicated_bonding_result %u ", status); 8011 uint8_t event[9]; 8012 int pos = 0; 8013 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8014 event[pos++] = sizeof(event) - 2u; 8015 event[pos++] = status; 8016 reverse_bd_addr(address, &event[pos]); 8017 hci_emit_event(event, sizeof(event), 1); 8018 } 8019 8020 8021 #ifdef ENABLE_CLASSIC 8022 8023 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8024 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8025 uint8_t event[5]; 8026 int pos = 0; 8027 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8028 event[pos++] = sizeof(event) - 2; 8029 little_endian_store_16(event, 2, con_handle); 8030 pos += 2; 8031 event[pos++] = level; 8032 hci_emit_event(event, sizeof(event), 1); 8033 } 8034 8035 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8036 if (!connection) return LEVEL_0; 8037 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8038 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8039 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8040 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8041 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8042 // LEVEL 4 always requires 128 bit encrytion key size 8043 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8044 security_level = LEVEL_3; 8045 } 8046 return security_level; 8047 } 8048 8049 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8050 uint8_t event[4]; 8051 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8052 event[1] = sizeof(event) - 2; 8053 event[2] = discoverable; 8054 event[3] = connectable; 8055 hci_emit_event(event, sizeof(event), 1); 8056 } 8057 8058 // query if remote side supports eSCO 8059 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8060 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8061 if (!connection) return false; 8062 return (connection->remote_supported_features[0] & 1) != 0; 8063 } 8064 8065 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8066 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8067 if (!connection) return 0; 8068 return connection->remote_supported_sco_packets; 8069 } 8070 8071 static bool hci_ssp_supported(hci_connection_t * connection){ 8072 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8073 return (connection->bonding_flags & mask) == mask; 8074 } 8075 8076 // query if remote side supports SSP 8077 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8078 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8079 if (!connection) return false; 8080 return hci_ssp_supported(connection) ? 1 : 0; 8081 } 8082 8083 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8084 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8085 } 8086 8087 /** 8088 * Check if remote supported features query has completed 8089 */ 8090 bool hci_remote_features_available(hci_con_handle_t handle){ 8091 hci_connection_t * connection = hci_connection_for_handle(handle); 8092 if (!connection) return false; 8093 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8094 } 8095 8096 /** 8097 * Trigger remote supported features query 8098 */ 8099 8100 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8101 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8102 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8103 } 8104 } 8105 8106 void hci_remote_features_query(hci_con_handle_t con_handle){ 8107 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8108 if (!connection) return; 8109 hci_trigger_remote_features_for_connection(connection); 8110 hci_run(); 8111 } 8112 8113 // GAP API 8114 /** 8115 * @bbrief enable/disable bonding. default is enabled 8116 * @praram enabled 8117 */ 8118 void gap_set_bondable_mode(int enable){ 8119 hci_stack->bondable = enable ? 1 : 0; 8120 } 8121 /** 8122 * @brief Get bondable mode. 8123 * @return 1 if bondable 8124 */ 8125 int gap_get_bondable_mode(void){ 8126 return hci_stack->bondable; 8127 } 8128 8129 /** 8130 * @brief map link keys to security levels 8131 */ 8132 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8133 switch (link_key_type){ 8134 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8135 return LEVEL_4; 8136 case COMBINATION_KEY: 8137 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8138 return LEVEL_3; 8139 default: 8140 return LEVEL_2; 8141 } 8142 } 8143 8144 /** 8145 * @brief map link keys to secure connection yes/no 8146 */ 8147 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8148 switch (link_key_type){ 8149 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8150 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8151 return true; 8152 default: 8153 return false; 8154 } 8155 } 8156 8157 /** 8158 * @brief map link keys to authenticated 8159 */ 8160 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8161 switch (link_key_type){ 8162 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8163 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8164 return true; 8165 default: 8166 return false; 8167 } 8168 } 8169 8170 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8171 log_info("gap_mitm_protection_required_for_security_level %u", level); 8172 return level > LEVEL_2; 8173 } 8174 8175 /** 8176 * @brief get current security level 8177 */ 8178 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8179 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8180 if (!connection) return LEVEL_0; 8181 return gap_security_level_for_connection(connection); 8182 } 8183 8184 /** 8185 * @brief request connection to device to 8186 * @result GAP_AUTHENTICATION_RESULT 8187 */ 8188 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8189 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8190 if (!connection){ 8191 hci_emit_security_level(con_handle, LEVEL_0); 8192 return; 8193 } 8194 8195 btstack_assert(hci_is_le_connection(connection) == false); 8196 8197 // 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) 8198 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8199 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8200 requested_level = LEVEL_4; 8201 } 8202 8203 gap_security_level_t current_level = gap_security_level(con_handle); 8204 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8205 requested_level, connection->requested_security_level, current_level); 8206 8207 // authentication active if authentication request was sent or planned level > 0 8208 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8209 if (authentication_active){ 8210 // authentication already active 8211 if (connection->requested_security_level < requested_level){ 8212 // increase requested level as new level is higher 8213 // TODO: handle re-authentication when done 8214 connection->requested_security_level = requested_level; 8215 } 8216 } else { 8217 // no request active, notify if security sufficient 8218 if (requested_level <= current_level){ 8219 hci_emit_security_level(con_handle, current_level); 8220 return; 8221 } 8222 8223 // store request 8224 connection->requested_security_level = requested_level; 8225 8226 // start to authenticate connection 8227 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8228 8229 // request remote features if not already active, also trigger hci_run 8230 hci_remote_features_query(con_handle); 8231 } 8232 } 8233 8234 /** 8235 * @brief start dedicated bonding with device. disconnect after bonding 8236 * @param device 8237 * @param request MITM protection 8238 * @result GAP_DEDICATED_BONDING_COMPLETE 8239 */ 8240 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8241 8242 // create connection state machine 8243 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8244 8245 if (!connection){ 8246 return BTSTACK_MEMORY_ALLOC_FAILED; 8247 } 8248 8249 // delete link key 8250 gap_drop_link_key_for_bd_addr(device); 8251 8252 // configure LEVEL_2/3, dedicated bonding 8253 connection->state = SEND_CREATE_CONNECTION; 8254 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8255 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8256 connection->bonding_flags = BONDING_DEDICATED; 8257 8258 hci_run(); 8259 8260 return 0; 8261 } 8262 8263 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8264 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8265 if (connection == NULL){ 8266 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8267 } 8268 if (defer){ 8269 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8270 } else { 8271 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8272 // trigger disconnect 8273 hci_run(); 8274 } 8275 return ERROR_CODE_SUCCESS; 8276 } 8277 8278 void gap_set_local_name(const char * local_name){ 8279 hci_stack->local_name = local_name; 8280 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8281 // also update EIR if not set by user 8282 if (hci_stack->eir_data == NULL){ 8283 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8284 } 8285 hci_run(); 8286 } 8287 #endif 8288 8289 8290 #ifdef ENABLE_BLE 8291 8292 #ifdef ENABLE_LE_CENTRAL 8293 void gap_start_scan(void){ 8294 hci_stack->le_scanning_enabled = true; 8295 hci_run(); 8296 } 8297 8298 void gap_stop_scan(void){ 8299 hci_stack->le_scanning_enabled = false; 8300 hci_run(); 8301 } 8302 8303 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8304 hci_stack->le_scan_type = scan_type; 8305 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8306 hci_stack->le_scan_interval = scan_interval; 8307 hci_stack->le_scan_window = scan_window; 8308 hci_stack->le_scanning_param_update = true; 8309 hci_run(); 8310 } 8311 8312 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8313 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8314 } 8315 8316 void gap_set_scan_duplicate_filter(bool enabled){ 8317 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8318 } 8319 8320 void gap_set_scan_phys(uint8_t phys){ 8321 // LE Coded and LE 1M PHY 8322 hci_stack->le_scan_phys = phys & 0x05; 8323 } 8324 8325 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8326 // disallow le connection if outgoing already active 8327 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8328 log_error("le connect already active"); 8329 return ERROR_CODE_COMMAND_DISALLOWED; 8330 } 8331 8332 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8333 if (conn == NULL) { 8334 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8335 if (conn == false){ 8336 // alloc failed 8337 log_info("gap_connect: failed to alloc hci_connection_t"); 8338 return BTSTACK_MEMORY_ALLOC_FAILED; 8339 } 8340 } else { 8341 switch (conn->state) { 8342 case RECEIVED_DISCONNECTION_COMPLETE: 8343 // connection was just disconnected, reset state and allow re-connect 8344 conn->role = HCI_ROLE_MASTER; 8345 break; 8346 default: 8347 return ERROR_CODE_COMMAND_DISALLOWED; 8348 } 8349 } 8350 8351 // set le connecting state 8352 if (hci_is_le_connection_type(addr_type)){ 8353 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8354 } 8355 8356 // trigger connect 8357 log_info("gap_connect: send create connection next"); 8358 conn->state = SEND_CREATE_CONNECTION; 8359 hci_run(); 8360 return ERROR_CODE_SUCCESS; 8361 } 8362 8363 // @assumption: only a single outgoing LE Connection exists 8364 static hci_connection_t * gap_get_outgoing_connection(void){ 8365 btstack_linked_item_t *it; 8366 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8367 hci_connection_t * conn = (hci_connection_t *) it; 8368 if (!hci_is_le_connection(conn)) continue; 8369 switch (conn->state){ 8370 case SEND_CREATE_CONNECTION: 8371 case SENT_CREATE_CONNECTION: 8372 return conn; 8373 default: 8374 break; 8375 }; 8376 } 8377 return NULL; 8378 } 8379 8380 uint8_t gap_connect_cancel(void){ 8381 hci_connection_t * conn; 8382 switch (hci_stack->le_connecting_request){ 8383 case LE_CONNECTING_IDLE: 8384 break; 8385 case LE_CONNECTING_WHITELIST: 8386 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8387 hci_run(); 8388 break; 8389 case LE_CONNECTING_DIRECT: 8390 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8391 conn = gap_get_outgoing_connection(); 8392 if (conn == NULL){ 8393 hci_run(); 8394 } else { 8395 switch (conn->state){ 8396 case SEND_CREATE_CONNECTION: 8397 // skip sending create connection and emit event instead 8398 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8399 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8400 btstack_memory_hci_connection_free( conn ); 8401 break; 8402 case SENT_CREATE_CONNECTION: 8403 // let hci_run_general_gap_le cancel outgoing connection 8404 hci_run(); 8405 break; 8406 default: 8407 break; 8408 } 8409 } 8410 break; 8411 default: 8412 btstack_unreachable(); 8413 break; 8414 } 8415 return ERROR_CODE_SUCCESS; 8416 } 8417 8418 /** 8419 * @brief Set connection parameters for outgoing connections 8420 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8421 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8422 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8423 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8424 * @param conn_latency, default: 4 8425 * @param supervision_timeout (unit: 10ms), default: 720 ms 8426 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8427 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8428 */ 8429 8430 void gap_set_connection_phys(uint8_t phys){ 8431 // LE Coded, LE 1M, LE 2M PHY 8432 hci_stack->le_connection_phys = phys & 7; 8433 } 8434 8435 #endif 8436 8437 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8438 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8439 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8440 hci_stack->le_connection_scan_interval = conn_scan_interval; 8441 hci_stack->le_connection_scan_window = conn_scan_window; 8442 hci_stack->le_connection_interval_min = conn_interval_min; 8443 hci_stack->le_connection_interval_max = conn_interval_max; 8444 hci_stack->le_connection_latency = conn_latency; 8445 hci_stack->le_supervision_timeout = supervision_timeout; 8446 hci_stack->le_minimum_ce_length = min_ce_length; 8447 hci_stack->le_maximum_ce_length = max_ce_length; 8448 } 8449 8450 /** 8451 * @brief Updates the connection parameters for a given LE connection 8452 * @param handle 8453 * @param conn_interval_min (unit: 1.25ms) 8454 * @param conn_interval_max (unit: 1.25ms) 8455 * @param conn_latency 8456 * @param supervision_timeout (unit: 10ms) 8457 * @return 0 if ok 8458 */ 8459 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8460 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8461 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8462 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8463 connection->le_conn_interval_min = conn_interval_min; 8464 connection->le_conn_interval_max = conn_interval_max; 8465 connection->le_conn_latency = conn_latency; 8466 connection->le_supervision_timeout = supervision_timeout; 8467 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8468 hci_run(); 8469 return 0; 8470 } 8471 8472 /** 8473 * @brief Request an update of the connection parameter for a given LE connection 8474 * @param handle 8475 * @param conn_interval_min (unit: 1.25ms) 8476 * @param conn_interval_max (unit: 1.25ms) 8477 * @param conn_latency 8478 * @param supervision_timeout (unit: 10ms) 8479 * @return 0 if ok 8480 */ 8481 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8482 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8483 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8484 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8485 connection->le_conn_interval_min = conn_interval_min; 8486 connection->le_conn_interval_max = conn_interval_max; 8487 connection->le_conn_latency = conn_latency; 8488 connection->le_supervision_timeout = supervision_timeout; 8489 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8490 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8491 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8492 return 0; 8493 } 8494 8495 #ifdef ENABLE_LE_PERIPHERAL 8496 8497 /** 8498 * @brief Set Advertisement Data 8499 * @param advertising_data_length 8500 * @param advertising_data (max 31 octets) 8501 * @note data is not copied, pointer has to stay valid 8502 */ 8503 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8504 hci_stack->le_advertisements_data_len = advertising_data_length; 8505 hci_stack->le_advertisements_data = advertising_data; 8506 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8507 hci_run(); 8508 } 8509 8510 /** 8511 * @brief Set Scan Response Data 8512 * @param advertising_data_length 8513 * @param advertising_data (max 31 octets) 8514 * @note data is not copied, pointer has to stay valid 8515 */ 8516 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8517 hci_stack->le_scan_response_data_len = scan_response_data_length; 8518 hci_stack->le_scan_response_data = scan_response_data; 8519 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8520 hci_run(); 8521 } 8522 8523 /** 8524 * @brief Set Advertisement Parameters 8525 * @param adv_int_min 8526 * @param adv_int_max 8527 * @param adv_type 8528 * @param direct_address_type 8529 * @param direct_address 8530 * @param channel_map 8531 * @param filter_policy 8532 * 8533 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8534 */ 8535 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8536 uint8_t direct_address_typ, bd_addr_t direct_address, 8537 uint8_t channel_map, uint8_t filter_policy) { 8538 8539 hci_stack->le_advertisements_interval_min = adv_int_min; 8540 hci_stack->le_advertisements_interval_max = adv_int_max; 8541 hci_stack->le_advertisements_type = adv_type; 8542 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8543 hci_stack->le_advertisements_channel_map = channel_map; 8544 hci_stack->le_advertisements_filter_policy = filter_policy; 8545 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8546 6); 8547 8548 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8549 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8550 hci_run(); 8551 } 8552 8553 /** 8554 * @brief Enable/Disable Advertisements 8555 * @param enabled 8556 */ 8557 void gap_advertisements_enable(int enabled){ 8558 if (enabled == 0){ 8559 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8560 } else { 8561 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8562 } 8563 hci_update_advertisements_enabled_for_current_roles(); 8564 hci_run(); 8565 } 8566 8567 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8568 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8569 btstack_linked_list_iterator_t it; 8570 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8571 while (btstack_linked_list_iterator_has_next(&it)){ 8572 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8573 if ( item->advertising_handle == advertising_handle ) { 8574 return item; 8575 } 8576 } 8577 return NULL; 8578 } 8579 8580 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8581 hci_stack->le_resolvable_private_address_update_s = update_s; 8582 hci_run(); 8583 return ERROR_CODE_SUCCESS; 8584 } 8585 8586 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8587 // find free advertisement handle 8588 uint8_t advertisement_handle; 8589 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8590 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8591 } 8592 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8593 // clear 8594 memset(storage, 0, sizeof(le_advertising_set_t)); 8595 // copy params 8596 storage->advertising_handle = advertisement_handle; 8597 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8598 // add to list 8599 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8600 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8601 *out_advertising_handle = advertisement_handle; 8602 // set tasks and start 8603 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8604 hci_run(); 8605 return ERROR_CODE_SUCCESS; 8606 } 8607 8608 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8609 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8610 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8611 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8612 // set tasks and start 8613 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8614 hci_run(); 8615 return ERROR_CODE_SUCCESS; 8616 } 8617 8618 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8619 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8620 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8621 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8622 return ERROR_CODE_SUCCESS; 8623 } 8624 8625 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8626 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8627 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8628 memcpy(advertising_set->random_address, random_address, 6); 8629 // set tasks and start 8630 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8631 hci_run(); 8632 return ERROR_CODE_SUCCESS; 8633 } 8634 8635 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8636 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8637 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8638 advertising_set->adv_data = advertising_data; 8639 advertising_set->adv_data_len = advertising_data_length; 8640 // set tasks and start 8641 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8642 hci_run(); 8643 return ERROR_CODE_SUCCESS; 8644 } 8645 8646 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){ 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 advertising_set->scan_data = scan_response_data; 8650 advertising_set->scan_data_len = scan_response_data_length; 8651 // set tasks and start 8652 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8653 hci_run(); 8654 return ERROR_CODE_SUCCESS; 8655 } 8656 8657 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8658 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8659 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8660 advertising_set->enable_timeout = timeout; 8661 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8662 // set tasks and start 8663 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8664 hci_run(); 8665 return ERROR_CODE_SUCCESS; 8666 } 8667 8668 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8669 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8670 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8671 // set tasks and start 8672 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8673 hci_run(); 8674 return ERROR_CODE_SUCCESS; 8675 } 8676 8677 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8678 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8679 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8680 // set tasks and start 8681 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8682 hci_run(); 8683 return ERROR_CODE_SUCCESS; 8684 } 8685 8686 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8687 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8688 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8689 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8690 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8691 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8692 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8693 // set tasks and start 8694 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8695 hci_run(); 8696 return ERROR_CODE_SUCCESS; 8697 } 8698 8699 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8700 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8701 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8702 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8703 return ERROR_CODE_SUCCESS; 8704 } 8705 8706 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8707 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8708 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8709 advertising_set->periodic_data = periodic_data; 8710 advertising_set->periodic_data_len = periodic_data_length; 8711 // set tasks and start 8712 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8713 hci_run(); 8714 return ERROR_CODE_SUCCESS; 8715 } 8716 8717 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8718 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8719 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8720 // set tasks and start 8721 advertising_set->periodic_include_adi = include_adi; 8722 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8723 hci_run(); 8724 return ERROR_CODE_SUCCESS; 8725 } 8726 8727 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8728 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8729 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8730 // set tasks and start 8731 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8732 hci_run(); 8733 return ERROR_CODE_SUCCESS; 8734 } 8735 8736 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8737 hci_stack->le_past_mode = mode; 8738 hci_stack->le_past_skip = skip; 8739 hci_stack->le_past_sync_timeout = sync_timeout; 8740 hci_stack->le_past_cte_type = cte_type; 8741 hci_stack->le_past_set_default_params = true; 8742 hci_run(); 8743 return ERROR_CODE_SUCCESS; 8744 } 8745 8746 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8747 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8748 if (hci_connection == NULL){ 8749 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8750 } 8751 hci_connection->le_past_sync_handle = sync_handle; 8752 hci_connection->le_past_service_data = service_data; 8753 hci_run(); 8754 return ERROR_CODE_SUCCESS; 8755 } 8756 8757 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8758 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8759 if (hci_connection == NULL){ 8760 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8761 } 8762 hci_connection->le_past_advertising_handle = advertising_handle; 8763 hci_connection->le_past_service_data = service_data; 8764 hci_run(); 8765 return ERROR_CODE_SUCCESS; 8766 } 8767 8768 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8769 8770 #endif 8771 8772 #endif 8773 8774 void hci_le_set_own_address_type(uint8_t own_address_type){ 8775 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8776 if (own_address_type == hci_stack->le_own_addr_type) return; 8777 hci_stack->le_own_addr_type = own_address_type; 8778 8779 #ifdef ENABLE_LE_PERIPHERAL 8780 // update advertisement parameters, too 8781 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8782 hci_run(); 8783 #endif 8784 #ifdef ENABLE_LE_CENTRAL 8785 // note: we don't update scan parameters or modify ongoing connection attempts 8786 #endif 8787 } 8788 8789 void hci_le_random_address_set(const bd_addr_t random_address){ 8790 memcpy(hci_stack->le_random_address, random_address, 6); 8791 hci_stack->le_random_address_set = true; 8792 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8793 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8794 if (hci_extended_advertising_supported()){ 8795 // force advertising set creation for LE Set Advertising Set Random Address 8796 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8797 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8798 } 8799 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8800 } 8801 #endif 8802 hci_run(); 8803 } 8804 8805 #endif 8806 8807 uint8_t gap_disconnect(hci_con_handle_t handle){ 8808 hci_connection_t * conn = hci_connection_for_handle(handle); 8809 if (!conn){ 8810 hci_emit_disconnection_complete(handle, 0); 8811 return 0; 8812 } 8813 // ignore if already disconnected 8814 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8815 return 0; 8816 } 8817 conn->state = SEND_DISCONNECT; 8818 hci_run(); 8819 return 0; 8820 } 8821 8822 int gap_read_rssi(hci_con_handle_t con_handle){ 8823 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8824 if (hci_connection == NULL) return 0; 8825 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8826 hci_run(); 8827 return 1; 8828 } 8829 8830 /** 8831 * @brief Get connection type 8832 * @param con_handle 8833 * @result connection_type 8834 */ 8835 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8836 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8837 if (!conn) return GAP_CONNECTION_INVALID; 8838 switch (conn->address_type){ 8839 case BD_ADDR_TYPE_LE_PUBLIC: 8840 case BD_ADDR_TYPE_LE_RANDOM: 8841 return GAP_CONNECTION_LE; 8842 case BD_ADDR_TYPE_SCO: 8843 return GAP_CONNECTION_SCO; 8844 case BD_ADDR_TYPE_ACL: 8845 return GAP_CONNECTION_ACL; 8846 default: 8847 return GAP_CONNECTION_INVALID; 8848 } 8849 } 8850 8851 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8852 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8853 if (!conn) return HCI_ROLE_INVALID; 8854 return (hci_role_t) conn->role; 8855 } 8856 8857 8858 #ifdef ENABLE_CLASSIC 8859 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8860 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8861 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8862 conn->request_role = role; 8863 hci_run(); 8864 return ERROR_CODE_SUCCESS; 8865 } 8866 #endif 8867 8868 #ifdef ENABLE_BLE 8869 8870 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){ 8871 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8872 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8873 8874 conn->le_phy_update_all_phys = all_phys; 8875 conn->le_phy_update_tx_phys = tx_phys; 8876 conn->le_phy_update_rx_phys = rx_phys; 8877 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8878 8879 hci_run(); 8880 8881 return 0; 8882 } 8883 8884 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8885 8886 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 8887 // incorrect configuration: 8888 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 8889 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 8890 btstack_assert(false); 8891 #endif 8892 8893 // check if already in list 8894 btstack_linked_list_iterator_t it; 8895 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8896 while (btstack_linked_list_iterator_has_next(&it)) { 8897 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8898 if (entry->address_type != address_type) { 8899 continue; 8900 } 8901 if (memcmp(entry->address, address, 6) != 0) { 8902 continue; 8903 } 8904 8905 // if already on controller: 8906 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8907 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8908 // drop remove request 8909 entry->state = LE_WHITELIST_ON_CONTROLLER; 8910 return ERROR_CODE_SUCCESS; 8911 } else { 8912 // disallow as already on controller 8913 return ERROR_CODE_COMMAND_DISALLOWED; 8914 } 8915 } 8916 8917 // assume scheduled to add 8918 return ERROR_CODE_COMMAND_DISALLOWED; 8919 } 8920 8921 // alloc and add to list 8922 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8923 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8924 entry->address_type = address_type; 8925 (void)memcpy(entry->address, address, 6); 8926 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8927 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8928 return ERROR_CODE_SUCCESS; 8929 } 8930 8931 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8932 btstack_linked_list_iterator_t it; 8933 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8934 while (btstack_linked_list_iterator_has_next(&it)){ 8935 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8936 if (entry->address_type != address_type) { 8937 continue; 8938 } 8939 if (memcmp(entry->address, address, 6) != 0) { 8940 continue; 8941 } 8942 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8943 // remove from controller if already present 8944 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8945 } else { 8946 // directly remove entry from whitelist 8947 btstack_linked_list_iterator_remove(&it); 8948 btstack_memory_whitelist_entry_free(entry); 8949 } 8950 return ERROR_CODE_SUCCESS; 8951 } 8952 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8953 } 8954 8955 static void hci_whitelist_clear(void){ 8956 btstack_linked_list_iterator_t it; 8957 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8958 while (btstack_linked_list_iterator_has_next(&it)){ 8959 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8960 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8961 // remove from controller if already present 8962 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8963 continue; 8964 } 8965 // directly remove entry from whitelist 8966 btstack_linked_list_iterator_remove(&it); 8967 btstack_memory_whitelist_entry_free(entry); 8968 } 8969 } 8970 8971 /** 8972 * @brief Clear Whitelist 8973 * @return 0 if ok 8974 */ 8975 uint8_t gap_whitelist_clear(void){ 8976 hci_whitelist_clear(); 8977 hci_run(); 8978 return ERROR_CODE_SUCCESS; 8979 } 8980 8981 /** 8982 * @brief Add Device to Whitelist 8983 * @param address_typ 8984 * @param address 8985 * @return 0 if ok 8986 */ 8987 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8988 uint8_t status = hci_whitelist_add(address_type, address); 8989 if (status){ 8990 return status; 8991 } 8992 hci_run(); 8993 return ERROR_CODE_SUCCESS; 8994 } 8995 8996 /** 8997 * @brief Remove Device from Whitelist 8998 * @param address_typ 8999 * @param address 9000 * @return 0 if ok 9001 */ 9002 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9003 uint8_t status = hci_whitelist_remove(address_type, address); 9004 if (status){ 9005 return status; 9006 } 9007 hci_run(); 9008 return ERROR_CODE_SUCCESS; 9009 } 9010 9011 #ifdef ENABLE_LE_CENTRAL 9012 /** 9013 * @brief Connect with Whitelist 9014 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9015 * @return - if ok 9016 */ 9017 uint8_t gap_connect_with_whitelist(void){ 9018 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9019 return ERROR_CODE_COMMAND_DISALLOWED; 9020 } 9021 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9022 hci_run(); 9023 return ERROR_CODE_SUCCESS; 9024 } 9025 9026 /** 9027 * @brief Auto Connection Establishment - Start Connecting to device 9028 * @param address_typ 9029 * @param address 9030 * @return 0 if ok 9031 */ 9032 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9033 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9034 return ERROR_CODE_COMMAND_DISALLOWED; 9035 } 9036 9037 uint8_t status = hci_whitelist_add(address_type, address); 9038 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9039 return status; 9040 } 9041 9042 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9043 9044 hci_run(); 9045 return ERROR_CODE_SUCCESS; 9046 } 9047 9048 /** 9049 * @brief Auto Connection Establishment - Stop Connecting to device 9050 * @param address_typ 9051 * @param address 9052 * @return 0 if ok 9053 */ 9054 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9055 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9056 return ERROR_CODE_COMMAND_DISALLOWED; 9057 } 9058 9059 hci_whitelist_remove(address_type, address); 9060 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9061 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9062 } 9063 hci_run(); 9064 return 0; 9065 } 9066 9067 /** 9068 * @brief Auto Connection Establishment - Stop everything 9069 * @note Convenience function to stop all active auto connection attempts 9070 */ 9071 uint8_t gap_auto_connection_stop_all(void){ 9072 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9073 return ERROR_CODE_COMMAND_DISALLOWED; 9074 } 9075 hci_whitelist_clear(); 9076 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9077 hci_run(); 9078 return ERROR_CODE_SUCCESS; 9079 } 9080 9081 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9082 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9083 if (!conn) return 0; 9084 return conn->le_connection_interval; 9085 } 9086 #endif 9087 #endif 9088 9089 #ifdef ENABLE_CLASSIC 9090 /** 9091 * @brief Set Extended Inquiry Response data 9092 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9093 * @note has to be done before stack starts up 9094 */ 9095 void gap_set_extended_inquiry_response(const uint8_t * data){ 9096 hci_stack->eir_data = data; 9097 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9098 hci_run(); 9099 } 9100 9101 /** 9102 * @brief Start GAP Classic Inquiry 9103 * @param duration in 1.28s units 9104 * @return 0 if ok 9105 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9106 */ 9107 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9108 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9109 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9110 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9111 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9112 } 9113 hci_stack->inquiry_state = duration_in_1280ms_units; 9114 hci_stack->inquiry_max_period_length = 0; 9115 hci_stack->inquiry_min_period_length = 0; 9116 hci_run(); 9117 return 0; 9118 } 9119 9120 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9121 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9122 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9123 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9124 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9125 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9126 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9127 9128 hci_stack->inquiry_state = duration; 9129 hci_stack->inquiry_max_period_length = max_period_length; 9130 hci_stack->inquiry_min_period_length = min_period_length; 9131 hci_run(); 9132 return 0; 9133 } 9134 9135 /** 9136 * @brief Stop GAP Classic Inquiry 9137 * @return 0 if ok 9138 */ 9139 int gap_inquiry_stop(void){ 9140 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9141 // emit inquiry complete event, before it even started 9142 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9143 hci_emit_event(event, sizeof(event), 1); 9144 return 0; 9145 } 9146 switch (hci_stack->inquiry_state){ 9147 case GAP_INQUIRY_STATE_ACTIVE: 9148 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9149 hci_run(); 9150 return ERROR_CODE_SUCCESS; 9151 case GAP_INQUIRY_STATE_PERIODIC: 9152 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9153 hci_run(); 9154 return ERROR_CODE_SUCCESS; 9155 default: 9156 return ERROR_CODE_COMMAND_DISALLOWED; 9157 } 9158 } 9159 9160 void gap_inquiry_set_lap(uint32_t lap){ 9161 hci_stack->inquiry_lap = lap; 9162 } 9163 9164 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9165 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9166 hci_stack->inquiry_scan_window = inquiry_scan_window; 9167 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9168 hci_run(); 9169 } 9170 9171 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9172 { 9173 hci_stack->inquiry_tx_power_level = tx_power; 9174 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9175 hci_run(); 9176 } 9177 9178 9179 /** 9180 * @brief Remote Name Request 9181 * @param addr 9182 * @param page_scan_repetition_mode 9183 * @param clock_offset only used when bit 15 is set 9184 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9185 */ 9186 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9187 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9188 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9189 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9190 hci_stack->remote_name_clock_offset = clock_offset; 9191 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9192 hci_run(); 9193 return 0; 9194 } 9195 9196 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9197 hci_stack->gap_pairing_state = state; 9198 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9199 hci_run(); 9200 return 0; 9201 } 9202 9203 /** 9204 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9205 * @param addr 9206 * @param pin_data 9207 * @param pin_len 9208 * @return 0 if ok 9209 */ 9210 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9211 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9212 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9213 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9214 hci_stack->gap_pairing_pin_len = pin_len; 9215 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9216 } 9217 9218 /** 9219 * @brief Legacy Pairing Pin Code Response 9220 * @param addr 9221 * @param pin 9222 * @return 0 if ok 9223 */ 9224 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9225 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9226 } 9227 9228 /** 9229 * @brief Abort Legacy Pairing 9230 * @param addr 9231 * @param pin 9232 * @return 0 if ok 9233 */ 9234 int gap_pin_code_negative(bd_addr_t addr){ 9235 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9236 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9237 } 9238 9239 /** 9240 * @brief SSP Passkey Response 9241 * @param addr 9242 * @param passkey 9243 * @return 0 if ok 9244 */ 9245 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9246 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9247 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9248 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9249 } 9250 9251 /** 9252 * @brief Abort SSP Passkey Entry/Pairing 9253 * @param addr 9254 * @param pin 9255 * @return 0 if ok 9256 */ 9257 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9258 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9259 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9260 } 9261 9262 /** 9263 * @brief Accept SSP Numeric Comparison 9264 * @param addr 9265 * @param passkey 9266 * @return 0 if ok 9267 */ 9268 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9269 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9270 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9271 } 9272 9273 /** 9274 * @brief Abort SSP Numeric Comparison/Pairing 9275 * @param addr 9276 * @param pin 9277 * @return 0 if ok 9278 */ 9279 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9280 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9281 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9282 } 9283 9284 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9285 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9286 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9287 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9288 connectionSetAuthenticationFlags(conn, flag); 9289 hci_run(); 9290 return ERROR_CODE_SUCCESS; 9291 } 9292 #endif 9293 9294 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9295 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9296 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9297 } 9298 9299 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9300 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9301 } 9302 #endif 9303 9304 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9305 /** 9306 * @brief Report Remote OOB Data 9307 * @param bd_addr 9308 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9309 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9310 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9311 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9312 */ 9313 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){ 9314 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9315 if (connection == NULL) { 9316 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9317 } 9318 connection->classic_oob_c_192 = c_192; 9319 connection->classic_oob_r_192 = r_192; 9320 9321 // ignore P-256 if not supported by us 9322 if (hci_stack->secure_connections_active){ 9323 connection->classic_oob_c_256 = c_256; 9324 connection->classic_oob_r_256 = r_256; 9325 } 9326 9327 return ERROR_CODE_SUCCESS; 9328 } 9329 /** 9330 * @brief Generate new OOB data 9331 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9332 */ 9333 void gap_ssp_generate_oob_data(void){ 9334 hci_stack->classic_read_local_oob_data = true; 9335 hci_run(); 9336 } 9337 9338 #endif 9339 9340 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9341 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9342 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9343 if (connection == NULL) { 9344 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9345 } 9346 9347 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9348 connection->link_key_type = type; 9349 9350 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9351 } 9352 9353 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9354 /** 9355 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9356 * @param inquiry_mode see bluetooth_defines.h 9357 */ 9358 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9359 hci_stack->inquiry_mode = inquiry_mode; 9360 } 9361 9362 /** 9363 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9364 */ 9365 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9366 hci_stack->sco_voice_setting = voice_setting; 9367 } 9368 9369 /** 9370 * @brief Get SCO Voice Setting 9371 * @return current voice setting 9372 */ 9373 uint16_t hci_get_sco_voice_setting(void){ 9374 return hci_stack->sco_voice_setting; 9375 } 9376 9377 static int hci_have_usb_transport(void){ 9378 if (!hci_stack->hci_transport) return 0; 9379 const char * transport_name = hci_stack->hci_transport->name; 9380 if (!transport_name) return 0; 9381 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9382 } 9383 9384 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9385 uint16_t sco_packet_length = 0; 9386 9387 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9388 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9389 int multiplier; 9390 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9391 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9392 multiplier = 2; 9393 } else { 9394 multiplier = 1; 9395 } 9396 #endif 9397 9398 #ifdef ENABLE_SCO_OVER_HCI 9399 if (hci_have_usb_transport()){ 9400 // see Core Spec for H2 USB Transfer. 9401 // 3 byte SCO header + 24 bytes per connection 9402 // @note multiple sco connections not supported currently 9403 sco_packet_length = 3 + 24 * multiplier; 9404 } else { 9405 // 3 byte SCO header + SCO packet length over the air 9406 sco_packet_length = 3 + payload_size * multiplier; 9407 // assert that it still fits inside an SCO buffer 9408 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9409 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9410 } 9411 } 9412 #endif 9413 #ifdef HAVE_SCO_TRANSPORT 9414 // 3 byte SCO header + SCO packet length over the air 9415 sco_packet_length = 3 + payload_size * multiplier; 9416 // assert that it still fits inside an SCO buffer 9417 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9418 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9419 } 9420 #endif 9421 return sco_packet_length; 9422 } 9423 9424 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9425 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9426 if (connection != NULL){ 9427 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9428 } 9429 return 0; 9430 } 9431 9432 uint16_t hci_get_sco_packet_length(void){ 9433 btstack_linked_list_iterator_t it; 9434 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9435 while (btstack_linked_list_iterator_has_next(&it)){ 9436 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9437 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9438 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9439 } 9440 } 9441 return 0; 9442 } 9443 9444 /** 9445 * @brief Sets the master/slave policy 9446 * @param policy (0: attempt to become master, 1: let connecting device decide) 9447 */ 9448 void hci_set_master_slave_policy(uint8_t policy){ 9449 hci_stack->master_slave_policy = policy; 9450 } 9451 9452 #endif 9453 9454 HCI_STATE hci_get_state(void){ 9455 return hci_stack->state; 9456 } 9457 9458 #ifdef ENABLE_CLASSIC 9459 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9460 hci_stack->gap_classic_accept_callback = accept_callback; 9461 } 9462 #endif 9463 9464 /** 9465 * @brief Set callback for Bluetooth Hardware Error 9466 */ 9467 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9468 hci_stack->hardware_error_callback = fn; 9469 } 9470 9471 void hci_disconnect_all(void){ 9472 btstack_linked_list_iterator_t it; 9473 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9474 while (btstack_linked_list_iterator_has_next(&it)){ 9475 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9476 if (con->state == SENT_DISCONNECT) continue; 9477 con->state = SEND_DISCONNECT; 9478 } 9479 hci_run(); 9480 } 9481 9482 uint16_t hci_get_manufacturer(void){ 9483 return hci_stack->manufacturer; 9484 } 9485 9486 #ifdef ENABLE_BLE 9487 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9488 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9489 if (!hci_con) return NULL; 9490 return &hci_con->sm_connection; 9491 } 9492 9493 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9494 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9495 #endif 9496 9497 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9498 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9499 if (hci_connection == NULL) return 0; 9500 if (hci_is_le_connection(hci_connection)){ 9501 #ifdef ENABLE_BLE 9502 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9503 if (sm_conn->sm_connection_encrypted != 0u) { 9504 return sm_conn->sm_actual_encryption_key_size; 9505 } 9506 #endif 9507 } else { 9508 #ifdef ENABLE_CLASSIC 9509 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9510 return hci_connection->encryption_key_size; 9511 } 9512 #endif 9513 } 9514 return 0; 9515 } 9516 9517 bool gap_authenticated(hci_con_handle_t con_handle){ 9518 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9519 if (hci_connection == NULL) return false; 9520 9521 switch (hci_connection->address_type){ 9522 #ifdef ENABLE_BLE 9523 case BD_ADDR_TYPE_LE_PUBLIC: 9524 case BD_ADDR_TYPE_LE_RANDOM: 9525 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9526 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9527 #endif 9528 #ifdef ENABLE_CLASSIC 9529 case BD_ADDR_TYPE_SCO: 9530 case BD_ADDR_TYPE_ACL: 9531 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9532 #endif 9533 default: 9534 return false; 9535 } 9536 } 9537 9538 bool gap_secure_connection(hci_con_handle_t con_handle){ 9539 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9540 if (hci_connection == NULL) return 0; 9541 9542 switch (hci_connection->address_type){ 9543 #ifdef ENABLE_BLE 9544 case BD_ADDR_TYPE_LE_PUBLIC: 9545 case BD_ADDR_TYPE_LE_RANDOM: 9546 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9547 return hci_connection->sm_connection.sm_connection_sc; 9548 #endif 9549 #ifdef ENABLE_CLASSIC 9550 case BD_ADDR_TYPE_SCO: 9551 case BD_ADDR_TYPE_ACL: 9552 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9553 #endif 9554 default: 9555 return false; 9556 } 9557 } 9558 9559 bool gap_bonded(hci_con_handle_t con_handle){ 9560 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9561 if (hci_connection == NULL) return 0; 9562 9563 #ifdef ENABLE_CLASSIC 9564 link_key_t link_key; 9565 link_key_type_t link_key_type; 9566 #endif 9567 switch (hci_connection->address_type){ 9568 #ifdef ENABLE_BLE 9569 case BD_ADDR_TYPE_LE_PUBLIC: 9570 case BD_ADDR_TYPE_LE_RANDOM: 9571 return hci_connection->sm_connection.sm_le_db_index >= 0; 9572 #endif 9573 #ifdef ENABLE_CLASSIC 9574 case BD_ADDR_TYPE_SCO: 9575 case BD_ADDR_TYPE_ACL: 9576 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9577 #endif 9578 default: 9579 return false; 9580 } 9581 } 9582 9583 #ifdef ENABLE_BLE 9584 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9585 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9586 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9587 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9588 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9589 return sm_conn->sm_connection_authorization_state; 9590 } 9591 #endif 9592 9593 #ifdef ENABLE_CLASSIC 9594 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){ 9595 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9596 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9597 conn->sniff_min_interval = sniff_min_interval; 9598 conn->sniff_max_interval = sniff_max_interval; 9599 conn->sniff_attempt = sniff_attempt; 9600 conn->sniff_timeout = sniff_timeout; 9601 hci_run(); 9602 return 0; 9603 } 9604 9605 /** 9606 * @brief Exit Sniff mode 9607 * @param con_handle 9608 @ @return 0 if ok 9609 */ 9610 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9611 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9612 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9613 conn->sniff_min_interval = 0xffff; 9614 hci_run(); 9615 return 0; 9616 } 9617 9618 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){ 9619 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9620 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9621 conn->sniff_subrating_max_latency = max_latency; 9622 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9623 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9624 hci_run(); 9625 return ERROR_CODE_SUCCESS; 9626 } 9627 9628 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){ 9629 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9630 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9631 conn->qos_service_type = service_type; 9632 conn->qos_token_rate = token_rate; 9633 conn->qos_peak_bandwidth = peak_bandwidth; 9634 conn->qos_latency = latency; 9635 conn->qos_delay_variation = delay_variation; 9636 hci_run(); 9637 return ERROR_CODE_SUCCESS; 9638 } 9639 9640 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9641 hci_stack->new_page_scan_interval = page_scan_interval; 9642 hci_stack->new_page_scan_window = page_scan_window; 9643 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9644 hci_run(); 9645 } 9646 9647 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9648 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9649 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9650 hci_run(); 9651 } 9652 9653 void gap_set_page_timeout(uint16_t page_timeout){ 9654 hci_stack->page_timeout = page_timeout; 9655 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9656 hci_run(); 9657 } 9658 9659 #endif 9660 9661 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9662 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9663 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9664 if (le_device_db_index >= le_device_db_max_count()) return; 9665 uint8_t offset = le_device_db_index >> 3; 9666 uint8_t mask = 1 << (le_device_db_index & 7); 9667 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9668 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9669 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9670 // note: go back to remove entries, otherwise, a remove + add will skip the add 9671 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9672 } 9673 } 9674 9675 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9676 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9677 if (le_device_db_index >= le_device_db_max_count()) return; 9678 uint8_t offset = le_device_db_index >> 3; 9679 uint8_t mask = 1 << (le_device_db_index & 7); 9680 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9681 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9682 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9683 } 9684 } 9685 9686 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9687 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9688 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9689 } 9690 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9691 // restart le resolving list update 9692 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9693 } 9694 return ERROR_CODE_SUCCESS; 9695 } 9696 9697 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9698 hci_stack->le_privacy_mode = privacy_mode; 9699 } 9700 #endif 9701 9702 #ifdef ENABLE_BLE 9703 #ifdef ENABLE_LE_CENTRAL 9704 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9705 9706 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9707 9708 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9709 // incorrect configuration: 9710 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9711 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9712 btstack_assert(false); 9713 #endif 9714 9715 // check if already in list 9716 btstack_linked_list_iterator_t it; 9717 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9718 while (btstack_linked_list_iterator_has_next(&it)) { 9719 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9720 if (entry->sid != advertising_sid) { 9721 continue; 9722 } 9723 if (entry->address_type != address_type) { 9724 continue; 9725 } 9726 if (memcmp(entry->address, address, 6) != 0) { 9727 continue; 9728 } 9729 // disallow if already scheduled to add 9730 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9731 return ERROR_CODE_COMMAND_DISALLOWED; 9732 } 9733 // still on controller, but scheduled to remove -> re-add 9734 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9735 return ERROR_CODE_SUCCESS; 9736 } 9737 // alloc and add to list 9738 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9739 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9740 entry->sid = advertising_sid; 9741 entry->address_type = address_type; 9742 (void)memcpy(entry->address, address, 6); 9743 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9744 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9745 return ERROR_CODE_SUCCESS; 9746 } 9747 9748 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9749 btstack_linked_list_iterator_t it; 9750 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9751 while (btstack_linked_list_iterator_has_next(&it)){ 9752 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9753 if (entry->sid != advertising_sid) { 9754 continue; 9755 } 9756 if (entry->address_type != address_type) { 9757 continue; 9758 } 9759 if (memcmp(entry->address, address, 6) != 0) { 9760 continue; 9761 } 9762 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9763 // remove from controller if already present 9764 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9765 } else { 9766 // directly remove entry from whitelist 9767 btstack_linked_list_iterator_remove(&it); 9768 btstack_memory_periodic_advertiser_list_entry_free(entry); 9769 } 9770 return ERROR_CODE_SUCCESS; 9771 } 9772 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9773 } 9774 9775 static void hci_periodic_advertiser_list_clear(void){ 9776 btstack_linked_list_iterator_t it; 9777 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9778 while (btstack_linked_list_iterator_has_next(&it)){ 9779 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9780 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9781 // remove from controller if already present 9782 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9783 continue; 9784 } 9785 // directly remove entry from whitelist 9786 btstack_linked_list_iterator_remove(&it); 9787 btstack_memory_periodic_advertiser_list_entry_free(entry); 9788 } 9789 } 9790 9791 uint8_t gap_periodic_advertiser_list_clear(void){ 9792 hci_periodic_advertiser_list_clear(); 9793 hci_run(); 9794 return ERROR_CODE_SUCCESS; 9795 } 9796 9797 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9798 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9799 if (status){ 9800 return status; 9801 } 9802 hci_run(); 9803 return ERROR_CODE_SUCCESS; 9804 } 9805 9806 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9807 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9808 if (status){ 9809 return status; 9810 } 9811 hci_run(); 9812 return ERROR_CODE_SUCCESS; 9813 } 9814 9815 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9816 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9817 // abort if already active 9818 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9819 return ERROR_CODE_COMMAND_DISALLOWED; 9820 } 9821 // store request 9822 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9823 hci_stack->le_periodic_sync_options = options; 9824 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9825 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9826 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9827 hci_stack->le_periodic_sync_skip = skip; 9828 hci_stack->le_periodic_sync_timeout = sync_timeout; 9829 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9830 9831 hci_run(); 9832 return ERROR_CODE_SUCCESS; 9833 } 9834 9835 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9836 // abort if not requested 9837 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9838 return ERROR_CODE_COMMAND_DISALLOWED; 9839 } 9840 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9841 hci_run(); 9842 return ERROR_CODE_SUCCESS; 9843 } 9844 9845 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9846 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9847 return ERROR_CODE_COMMAND_DISALLOWED; 9848 } 9849 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9850 hci_run(); 9851 return ERROR_CODE_SUCCESS; 9852 } 9853 9854 #endif 9855 #endif 9856 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9857 static hci_iso_stream_t * 9858 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9859 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9860 if (iso_stream != NULL){ 9861 iso_stream->iso_type = iso_type; 9862 iso_stream->state = state; 9863 iso_stream->group_id = group_id; 9864 iso_stream->stream_id = stream_id; 9865 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9866 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9867 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9868 } 9869 return iso_stream; 9870 } 9871 9872 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9873 btstack_linked_list_iterator_t it; 9874 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9875 while (btstack_linked_list_iterator_has_next(&it)){ 9876 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9877 if (iso_stream->cis_handle == con_handle ) { 9878 return iso_stream; 9879 } 9880 } 9881 return NULL; 9882 } 9883 9884 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9885 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9886 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9887 btstack_memory_hci_iso_stream_free(iso_stream); 9888 } 9889 9890 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9891 btstack_linked_list_iterator_t it; 9892 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9893 while (btstack_linked_list_iterator_has_next(&it)){ 9894 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9895 if ((iso_stream->group_id == group_id) && 9896 (iso_stream->iso_type == iso_type)){ 9897 btstack_linked_list_iterator_remove(&it); 9898 btstack_memory_hci_iso_stream_free(iso_stream); 9899 } 9900 } 9901 } 9902 9903 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9904 btstack_linked_list_iterator_t it; 9905 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9906 while (btstack_linked_list_iterator_has_next(&it)){ 9907 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9908 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9909 (iso_stream->group_id == group_id)){ 9910 btstack_linked_list_iterator_remove(&it); 9911 btstack_memory_hci_iso_stream_free(iso_stream); 9912 } 9913 } 9914 } 9915 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9916 btstack_linked_list_iterator_t it; 9917 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9918 while (btstack_linked_list_iterator_has_next(&it)){ 9919 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9920 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9921 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9922 } 9923 } 9924 } 9925 9926 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9927 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9928 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9929 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9930 return (sdu_len_offset + 2 + sdu_len) == size; 9931 } 9932 9933 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 9934 if (iso_stream == NULL){ 9935 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 9936 return; 9937 } 9938 9939 if (hci_stack->iso_packet_handler == NULL) { 9940 return; 9941 } 9942 9943 // parse header 9944 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 9945 uint16_t data_total_length = little_endian_read_16(packet, 2); 9946 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 9947 9948 // assert packet is complete 9949 if ((data_total_length + 4u) != size){ 9950 return; 9951 } 9952 9953 if ((pb_flag & 0x01) == 0){ 9954 if (pb_flag == 0x02){ 9955 // The ISO_SDU_Fragment field contains a header and a complete SDU. 9956 if (hci_iso_sdu_complete(packet, size)) { 9957 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9958 } 9959 } else { 9960 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9961 if (size > sizeof(iso_stream->reassembly_buffer)){ 9962 return; 9963 } 9964 memcpy(iso_stream->reassembly_buffer, packet, size); 9965 // fix pb_flag 9966 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9967 iso_stream->reassembly_pos = size; 9968 } 9969 } else { 9970 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 9971 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 9972 if (ts_flag != 0){ 9973 return; 9974 } 9975 // append fragment 9976 if (iso_stream->reassembly_pos == 0){ 9977 return; 9978 } 9979 9980 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 9981 // reset reassembly buffer 9982 iso_stream->reassembly_pos = 0; 9983 return; 9984 } 9985 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 9986 iso_stream->reassembly_pos += data_total_length; 9987 9988 // deliver if last fragment and SDU complete 9989 if (pb_flag == 0x03){ 9990 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9991 // fix data_total_length 9992 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 9993 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9994 } 9995 // reset reassembly buffer 9996 iso_stream->reassembly_pos = 0; 9997 } 9998 } 9999 } 10000 10001 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10002 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10003 uint16_t pos = 0; 10004 event[pos++] = HCI_EVENT_META_GAP; 10005 event[pos++] = 4 + (2 * big->num_bis); 10006 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10007 event[pos++] = status; 10008 event[pos++] = big->big_handle; 10009 event[pos++] = big->num_bis; 10010 uint8_t i; 10011 for (i=0;i<big->num_bis;i++){ 10012 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10013 pos += 2; 10014 } 10015 hci_emit_event(event, pos, 0); 10016 } 10017 10018 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10019 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10020 uint16_t pos = 0; 10021 event[pos++] = HCI_EVENT_META_GAP; 10022 event[pos++] = 4 + (2 * cig->num_cis); 10023 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10024 event[pos++] = status; 10025 event[pos++] = cig->cig_id; 10026 event[pos++] = cig->num_cis; 10027 uint8_t i; 10028 for (i=0;i<cig->num_cis;i++){ 10029 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10030 pos += 2; 10031 } 10032 hci_emit_event(event, pos, 0); 10033 } 10034 10035 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10036 uint16_t pos = 0; 10037 event[pos++] = HCI_EVENT_META_GAP; 10038 event[pos++] = 8; 10039 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10040 event[pos++] = status; 10041 event[pos++] = iso_stream->group_id; 10042 event[pos++] = iso_stream->stream_id; 10043 little_endian_store_16(event, pos, iso_stream->cis_handle); 10044 pos += 2; 10045 little_endian_store_16(event, pos, iso_stream->acl_handle); 10046 pos += 2; 10047 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10048 pos += 2; 10049 event[pos++] = iso_stream->number_of_subevents; 10050 event[pos++] = iso_stream->burst_number_c_to_p; 10051 event[pos++] = iso_stream->burst_number_p_to_c; 10052 event[pos++] = iso_stream->flush_timeout_c_to_p; 10053 event[pos++] = iso_stream->flush_timeout_p_to_c; 10054 return pos; 10055 } 10056 10057 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10058 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10059 // cache data before finalizing struct 10060 uint8_t event [17]; 10061 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10062 btstack_assert(pos <= sizeof(event)); 10063 if (status != ERROR_CODE_SUCCESS){ 10064 hci_iso_stream_finalize(iso_stream); 10065 } 10066 hci_emit_event(event, pos, 0); 10067 } 10068 10069 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10070 uint8_t event [4]; 10071 uint16_t pos = 0; 10072 event[pos++] = HCI_EVENT_META_GAP; 10073 event[pos++] = 2; 10074 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10075 event[pos++] = big->big_handle; 10076 hci_emit_event(event, pos, 0); 10077 } 10078 10079 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10080 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10081 uint16_t pos = 0; 10082 event[pos++] = HCI_EVENT_META_GAP; 10083 event[pos++] = 4; 10084 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10085 event[pos++] = status; 10086 event[pos++] = big_sync->big_handle; 10087 event[pos++] = big_sync->num_bis; 10088 uint8_t i; 10089 for (i=0;i<big_sync->num_bis;i++){ 10090 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10091 pos += 2; 10092 } 10093 hci_emit_event(event, pos, 0); 10094 } 10095 10096 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10097 uint8_t event [4]; 10098 uint16_t pos = 0; 10099 event[pos++] = HCI_EVENT_META_GAP; 10100 event[pos++] = 2; 10101 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10102 event[pos++] = big_handle; 10103 hci_emit_event(event, pos, 0); 10104 } 10105 10106 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10107 uint8_t event[6]; 10108 uint16_t pos = 0; 10109 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10110 event[pos++] = sizeof(event) - 2; 10111 event[pos++] = big->big_handle; 10112 event[pos++] = bis_index; 10113 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10114 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10115 } 10116 10117 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10118 uint8_t event[4]; 10119 uint16_t pos = 0; 10120 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10121 event[pos++] = sizeof(event) - 2; 10122 little_endian_store_16(event, pos, cis_con_handle); 10123 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10124 } 10125 10126 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10127 btstack_linked_list_iterator_t it; 10128 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10129 while (btstack_linked_list_iterator_has_next(&it)){ 10130 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10131 if ( big->big_handle == big_handle ) { 10132 return big; 10133 } 10134 } 10135 return NULL; 10136 } 10137 10138 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10139 btstack_linked_list_iterator_t it; 10140 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10141 while (btstack_linked_list_iterator_has_next(&it)){ 10142 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10143 if ( big_sync->big_handle == big_handle ) { 10144 return big_sync; 10145 } 10146 } 10147 return NULL; 10148 } 10149 10150 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10151 hci_stack->iso_packets_to_queue = num_packets; 10152 } 10153 10154 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10155 btstack_linked_list_iterator_t it; 10156 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10157 while (btstack_linked_list_iterator_has_next(&it)){ 10158 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10159 if ( cig->cig_id == cig_id ) { 10160 return cig; 10161 } 10162 } 10163 return NULL; 10164 } 10165 10166 static void hci_iso_notify_can_send_now(void){ 10167 10168 // BIG 10169 10170 btstack_linked_list_iterator_t it; 10171 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10172 while (btstack_linked_list_iterator_has_next(&it)){ 10173 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10174 // track number completed packet timestamps 10175 if (big->num_completed_timestamp_current_valid){ 10176 big->num_completed_timestamp_current_valid = false; 10177 if (big->num_completed_timestamp_previous_valid){ 10178 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10179 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10180 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10181 big->num_completed_timestamp_previous_ms); 10182 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10183 // to catch up, skip packet on all BIS 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){ 10188 iso_stream->num_packets_to_skip++; 10189 } 10190 } 10191 } 10192 } 10193 big->num_completed_timestamp_previous_valid = true; 10194 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10195 } 10196 10197 if (big->can_send_now_requested){ 10198 // check if no outgoing iso packets pending and no can send now have to be emitted 10199 uint8_t i; 10200 bool can_send = true; 10201 uint8_t num_iso_queued_minimum = 0; 10202 for (i=0;i<big->num_bis;i++){ 10203 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10204 if (iso_stream == NULL) continue; 10205 // handle case where individual ISO packet was sent too late: 10206 // for each additionally queued packet, a new one needs to get skipped 10207 if (i==0){ 10208 num_iso_queued_minimum = iso_stream->num_packets_sent; 10209 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10210 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10211 iso_stream->num_packets_to_skip += num_packets_to_skip; 10212 iso_stream->num_packets_sent -= num_packets_to_skip; 10213 } 10214 // check if we can send now 10215 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10216 can_send = false; 10217 break; 10218 } 10219 } 10220 if (can_send){ 10221 // propagate can send now to individual streams 10222 big->can_send_now_requested = false; 10223 for (i=0;i<big->num_bis;i++){ 10224 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10225 iso_stream->emit_ready_to_send = true; 10226 } 10227 } 10228 } 10229 } 10230 10231 if (hci_stack->hci_packet_buffer_reserved) return; 10232 10233 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10234 while (btstack_linked_list_iterator_has_next(&it)){ 10235 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10236 // report bis ready 10237 uint8_t i; 10238 for (i=0;i<big->num_bis;i++){ 10239 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10240 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10241 iso_stream->emit_ready_to_send = false; 10242 hci_emit_bis_can_send_now(big, i); 10243 break; 10244 } 10245 } 10246 } 10247 10248 // CIS 10249 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10250 while (btstack_linked_list_iterator_has_next(&it)) { 10251 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10252 if ((iso_stream->can_send_now_requested) && 10253 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10254 iso_stream->can_send_now_requested = false; 10255 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10256 } 10257 } 10258 } 10259 10260 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10261 // make big handle unique and usuable for big and big sync 10262 if (hci_big_for_handle(big_handle) != NULL){ 10263 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10264 } 10265 if (hci_big_sync_for_handle(big_handle) != NULL){ 10266 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10267 } 10268 if (num_bis == 0){ 10269 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10270 } 10271 if (num_bis > MAX_NR_BIS){ 10272 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10273 } 10274 10275 // reserve ISO Streams 10276 uint8_t i; 10277 uint8_t status = ERROR_CODE_SUCCESS; 10278 for (i=0;i<num_bis;i++){ 10279 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10280 if (iso_stream == NULL) { 10281 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10282 break; 10283 } 10284 } 10285 10286 // free structs on error 10287 if (status != ERROR_CODE_SUCCESS){ 10288 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10289 } 10290 10291 return status; 10292 } 10293 10294 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10295 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10296 if (status != ERROR_CODE_SUCCESS){ 10297 return status; 10298 } 10299 10300 le_audio_big_t * big = storage; 10301 big->big_handle = big_params->big_handle; 10302 big->params = big_params; 10303 big->state = LE_AUDIO_BIG_STATE_CREATE; 10304 big->num_bis = big_params->num_bis; 10305 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10306 10307 hci_run(); 10308 10309 return ERROR_CODE_SUCCESS; 10310 } 10311 10312 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10313 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10314 if (status != ERROR_CODE_SUCCESS){ 10315 return status; 10316 } 10317 10318 le_audio_big_sync_t * big_sync = storage; 10319 big_sync->big_handle = big_sync_params->big_handle; 10320 big_sync->params = big_sync_params; 10321 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10322 big_sync->num_bis = big_sync_params->num_bis; 10323 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10324 10325 hci_run(); 10326 10327 return ERROR_CODE_SUCCESS; 10328 } 10329 10330 uint8_t gap_big_terminate(uint8_t big_handle){ 10331 le_audio_big_t * big = hci_big_for_handle(big_handle); 10332 if (big == NULL){ 10333 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10334 } 10335 switch (big->state){ 10336 case LE_AUDIO_BIG_STATE_CREATE: 10337 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10338 hci_emit_big_terminated(big); 10339 break; 10340 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10341 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10342 break; 10343 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10344 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10345 case LE_AUDIO_BIG_STATE_ACTIVE: 10346 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10347 hci_run(); 10348 break; 10349 default: 10350 return ERROR_CODE_COMMAND_DISALLOWED; 10351 } 10352 return ERROR_CODE_SUCCESS; 10353 } 10354 10355 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10356 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10357 if (big_sync == NULL){ 10358 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10359 } 10360 switch (big_sync->state){ 10361 case LE_AUDIO_BIG_STATE_CREATE: 10362 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10363 hci_emit_big_sync_stopped(big_handle); 10364 break; 10365 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10366 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10367 break; 10368 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10369 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10370 case LE_AUDIO_BIG_STATE_ACTIVE: 10371 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10372 hci_run(); 10373 break; 10374 default: 10375 return ERROR_CODE_COMMAND_DISALLOWED; 10376 } 10377 return ERROR_CODE_SUCCESS; 10378 } 10379 10380 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10381 le_audio_big_t * big = hci_big_for_handle(big_handle); 10382 if (big == NULL){ 10383 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10384 } 10385 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10386 return ERROR_CODE_COMMAND_DISALLOWED; 10387 } 10388 big->can_send_now_requested = true; 10389 hci_iso_notify_can_send_now(); 10390 return ERROR_CODE_SUCCESS; 10391 } 10392 10393 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10394 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10395 if (iso_stream == NULL){ 10396 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10397 } 10398 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10399 return ERROR_CODE_COMMAND_DISALLOWED; 10400 } 10401 iso_stream->can_send_now_requested = true; 10402 hci_iso_notify_can_send_now(); 10403 return ERROR_CODE_SUCCESS; 10404 } 10405 10406 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10407 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10408 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10409 } 10410 if (cig_params->num_cis == 0){ 10411 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10412 } 10413 if (cig_params->num_cis > MAX_NR_CIS){ 10414 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10415 } 10416 10417 // reserve ISO Streams 10418 uint8_t i; 10419 uint8_t status = ERROR_CODE_SUCCESS; 10420 for (i=0;i<cig_params->num_cis;i++){ 10421 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10422 if (iso_stream == NULL) { 10423 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10424 break; 10425 } 10426 } 10427 10428 // free structs on error 10429 if (status != ERROR_CODE_SUCCESS){ 10430 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10431 return status; 10432 } 10433 10434 le_audio_cig_t * cig = storage; 10435 cig->cig_id = cig_params->cig_id; 10436 cig->num_cis = cig_params->num_cis; 10437 cig->params = cig_params; 10438 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10439 for (i=0;i<cig->num_cis;i++){ 10440 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10441 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10442 cig->cis_setup_active[i] = false; 10443 cig->cis_established[i] = false; 10444 } 10445 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10446 10447 hci_run(); 10448 10449 return ERROR_CODE_SUCCESS; 10450 } 10451 10452 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10453 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10454 if (cig == NULL){ 10455 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10456 } 10457 10458 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10459 return ERROR_CODE_COMMAND_DISALLOWED; 10460 } 10461 10462 // store ACL Connection Handles 10463 uint8_t i; 10464 for (i=0;i<cig->num_cis;i++){ 10465 // check that all con handles exist and store 10466 hci_con_handle_t cis_handle = cis_con_handles[i]; 10467 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10468 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10469 } 10470 uint8_t j; 10471 bool found = false; 10472 for (j=0;j<cig->num_cis;j++){ 10473 if (cig->cis_con_handles[j] == cis_handle){ 10474 cig->acl_con_handles[j] = acl_con_handles[j]; 10475 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10476 btstack_assert(iso_stream != NULL); 10477 iso_stream->acl_handle = acl_con_handles[j]; 10478 found = true; 10479 break; 10480 } 10481 } 10482 if (!found){ 10483 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10484 } 10485 } 10486 10487 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10488 hci_run(); 10489 10490 return ERROR_CODE_SUCCESS; 10491 } 10492 10493 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10494 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10495 if (iso_stream == NULL){ 10496 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10497 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10498 } 10499 10500 // set next state and continue 10501 iso_stream->state = state; 10502 hci_run(); 10503 return ERROR_CODE_SUCCESS; 10504 } 10505 10506 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10507 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10508 } 10509 10510 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10511 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10512 } 10513 10514 10515 #endif 10516 #endif /* ENABLE_BLE */ 10517 10518 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10519 void hci_setup_test_connections_fuzz(void){ 10520 hci_connection_t * conn; 10521 10522 // default address: 66:55:44:33:00:01 10523 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10524 10525 // setup Controller info 10526 hci_stack->num_cmd_packets = 255; 10527 hci_stack->acl_packets_total_num = 255; 10528 10529 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10530 addr[5] = 0x01; 10531 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10532 conn->con_handle = addr[5]; 10533 conn->state = RECEIVED_CONNECTION_REQUEST; 10534 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10535 10536 // setup incoming Classic SCO connection with con handle 0x0002 10537 addr[5] = 0x02; 10538 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10539 conn->con_handle = addr[5]; 10540 conn->state = RECEIVED_CONNECTION_REQUEST; 10541 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10542 10543 // setup ready Classic ACL connection with con handle 0x0003 10544 addr[5] = 0x03; 10545 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10546 conn->con_handle = addr[5]; 10547 conn->state = OPEN; 10548 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10549 10550 // setup ready Classic SCO connection with con handle 0x0004 10551 addr[5] = 0x04; 10552 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10553 conn->con_handle = addr[5]; 10554 conn->state = OPEN; 10555 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10556 10557 // setup ready LE ACL connection with con handle 0x005 and public address 10558 addr[5] = 0x05; 10559 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10560 conn->con_handle = addr[5]; 10561 conn->state = OPEN; 10562 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10563 conn->sm_connection.sm_connection_encrypted = 1; 10564 } 10565 10566 void hci_free_connections_fuzz(void){ 10567 btstack_linked_list_iterator_t it; 10568 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10569 while (btstack_linked_list_iterator_has_next(&it)){ 10570 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10571 btstack_linked_list_iterator_remove(&it); 10572 btstack_memory_hci_connection_free(con); 10573 } 10574 } 10575 void hci_simulate_working_fuzz(void){ 10576 hci_stack->le_scanning_param_update = false; 10577 hci_init_done(); 10578 hci_stack->num_cmd_packets = 255; 10579 } 10580 #endif 10581