1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static int hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 247 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 248 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 249 static void hci_iso_notify_can_send_now(void); 250 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 251 static void hci_emit_big_terminated(const le_audio_big_t * big); 252 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 253 static void hci_emit_big_sync_stopped(uint8_t big_handle); 254 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 255 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 258 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 259 #endif /* ENABLE_BLE */ 260 261 // the STACK is here 262 #ifndef HAVE_MALLOC 263 static hci_stack_t hci_stack_static; 264 #endif 265 static hci_stack_t * hci_stack = NULL; 266 267 #ifdef ENABLE_CLASSIC 268 // default name 269 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 270 271 // test helper 272 static uint8_t disable_l2cap_timeouts = 0; 273 #endif 274 275 // reset connection state on create and on reconnect 276 // don't overwrite addr, con handle, role 277 static void hci_connection_init(hci_connection_t * conn){ 278 conn->authentication_flags = AUTH_FLAG_NONE; 279 conn->bonding_flags = 0; 280 conn->requested_security_level = LEVEL_0; 281 #ifdef ENABLE_CLASSIC 282 conn->request_role = HCI_ROLE_INVALID; 283 conn->sniff_subrating_max_latency = 0xffff; 284 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 285 conn->link_key_type = INVALID_LINK_KEY; 286 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 287 btstack_run_loop_set_timer_context(&conn->timeout, conn); 288 hci_connection_timestamp(conn); 289 #endif 290 conn->acl_recombination_length = 0; 291 conn->acl_recombination_pos = 0; 292 conn->num_packets_sent = 0; 293 294 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 295 #ifdef ENABLE_BLE 296 conn->le_phy_update_all_phys = 0xff; 297 #endif 298 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 299 conn->le_max_tx_octets = 27; 300 #endif 301 #ifdef ENABLE_CLASSIC_PAIRING_OOB 302 conn->classic_oob_c_192 = NULL; 303 conn->classic_oob_r_192 = NULL; 304 conn->classic_oob_c_256 = NULL; 305 conn->classic_oob_r_256 = NULL; 306 #endif 307 } 308 309 /** 310 * create connection for given address 311 * 312 * @return connection OR NULL, if no memory left 313 */ 314 static hci_connection_t * 315 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 316 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 317 318 hci_connection_t * conn = btstack_memory_hci_connection_get(); 319 if (!conn) return NULL; 320 hci_connection_init(conn); 321 322 bd_addr_copy(conn->address, addr); 323 conn->address_type = addr_type; 324 conn->con_handle = HCI_CON_HANDLE_INVALID; 325 conn->role = role; 326 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 327 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 328 #endif 329 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 330 331 return conn; 332 } 333 334 335 /** 336 * get le connection parameter range 337 * 338 * @return le connection parameter range struct 339 */ 340 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 341 *range = hci_stack->le_connection_parameter_range; 342 } 343 344 /** 345 * set le connection parameter range 346 * 347 */ 348 349 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 350 hci_stack->le_connection_parameter_range = *range; 351 } 352 353 /** 354 * @brief Test if connection parameters are inside in existing rage 355 * @param conn_interval_min (unit: 1.25ms) 356 * @param conn_interval_max (unit: 1.25ms) 357 * @param conn_latency 358 * @param supervision_timeout (unit: 10ms) 359 * @return 1 if included 360 */ 361 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 362 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 363 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 364 365 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 366 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 367 368 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 369 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 370 371 return 1; 372 } 373 374 /** 375 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 376 * @note: default: 1 377 * @param max_peripheral_connections 378 */ 379 #ifdef ENABLE_LE_PERIPHERAL 380 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 381 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 382 } 383 #endif 384 385 /** 386 * get hci connections iterator 387 * 388 * @return hci connections iterator 389 */ 390 391 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 392 btstack_linked_list_iterator_init(it, &hci_stack->connections); 393 } 394 395 /** 396 * get connection for a given handle 397 * 398 * @return connection OR NULL, if not found 399 */ 400 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 401 btstack_linked_list_iterator_t it; 402 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 403 while (btstack_linked_list_iterator_has_next(&it)){ 404 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 405 if ( item->con_handle == con_handle ) { 406 return item; 407 } 408 } 409 return NULL; 410 } 411 412 /** 413 * get connection for given address 414 * 415 * @return connection OR NULL, if not found 416 */ 417 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 418 btstack_linked_list_iterator_t it; 419 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 420 while (btstack_linked_list_iterator_has_next(&it)){ 421 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 422 if (connection->address_type != addr_type) continue; 423 if (memcmp(addr, connection->address, 6) != 0) continue; 424 return connection; 425 } 426 return NULL; 427 } 428 429 #ifdef ENABLE_CLASSIC 430 431 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 432 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 433 } 434 435 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 436 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 437 } 438 439 #ifdef ENABLE_SCO_OVER_HCI 440 static int hci_number_sco_connections(void){ 441 int connections = 0; 442 btstack_linked_list_iterator_t it; 443 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 444 while (btstack_linked_list_iterator_has_next(&it)){ 445 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 446 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 447 connections++; 448 } 449 return connections; 450 } 451 #endif 452 453 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 454 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 455 #ifdef HAVE_EMBEDDED_TICK 456 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 457 // connections might be timed out 458 hci_emit_l2cap_check_timeout(connection); 459 } 460 #else 461 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 462 // connections might be timed out 463 hci_emit_l2cap_check_timeout(connection); 464 } 465 #endif 466 } 467 468 static void hci_connection_timestamp(hci_connection_t *connection){ 469 #ifdef HAVE_EMBEDDED_TICK 470 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 471 #else 472 connection->timestamp = btstack_run_loop_get_time_ms(); 473 #endif 474 } 475 476 /** 477 * add authentication flags and reset timer 478 * @note: assumes classic connection 479 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 480 */ 481 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 482 bd_addr_t addr; 483 reverse_bd_addr(bd_addr, addr); 484 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 485 if (conn) { 486 connectionSetAuthenticationFlags(conn, flags); 487 hci_connection_timestamp(conn); 488 } 489 } 490 491 static bool hci_pairing_active(hci_connection_t * hci_connection){ 492 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 493 } 494 495 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 496 if (hci_pairing_active(hci_connection)) return; 497 if (ssp){ 498 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 499 } else { 500 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 501 } 502 // if we are initiator, we have sent an HCI Authenticate Request 503 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 504 505 // if we are responder, use minimal service security level as required level 506 if (!initiator){ 507 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 508 } 509 510 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 511 512 uint8_t event[12]; 513 event[0] = GAP_EVENT_PAIRING_STARTED; 514 event[1] = 10; 515 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 516 reverse_bd_addr(hci_connection->address, &event[4]); 517 event[10] = (uint8_t) ssp; 518 event[11] = (uint8_t) initiator; 519 hci_emit_event(event, sizeof(event), 1); 520 } 521 522 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 523 hci_connection->requested_security_level = LEVEL_0; 524 if (!hci_pairing_active(hci_connection)) return; 525 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 526 #ifdef ENABLE_CLASSIC_PAIRING_OOB 527 hci_connection->classic_oob_c_192 = NULL; 528 hci_connection->classic_oob_r_192 = NULL; 529 hci_connection->classic_oob_c_256 = NULL; 530 hci_connection->classic_oob_r_256 = NULL; 531 #endif 532 log_info("pairing complete, status %02x", status); 533 534 uint8_t event[11]; 535 event[0] = GAP_EVENT_PAIRING_COMPLETE; 536 event[1] = 9; 537 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 538 reverse_bd_addr(hci_connection->address, &event[4]); 539 event[10] = status; 540 hci_emit_event(event, sizeof(event), 1); 541 542 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 543 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 544 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 545 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 546 hci_connection->bonding_status = status; 547 } 548 } 549 550 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 551 hci_connection_t * conn = hci_connection_for_handle(handle); 552 if (!conn) return false; 553 return hci_pairing_active(conn); 554 } 555 556 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 557 if (!hci_stack->link_key_db) return; 558 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 559 hci_stack->link_key_db->delete_link_key(addr); 560 } 561 562 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 563 if (!hci_stack->link_key_db) return; 564 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 565 hci_stack->link_key_db->put_link_key(addr, link_key, type); 566 } 567 568 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 569 if (!hci_stack->link_key_db) return false; 570 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 571 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 572 return result; 573 } 574 575 void gap_delete_all_link_keys(void){ 576 bd_addr_t addr; 577 link_key_t link_key; 578 link_key_type_t type; 579 btstack_link_key_iterator_t it; 580 int ok = gap_link_key_iterator_init(&it); 581 if (!ok) { 582 log_error("could not initialize iterator"); 583 return; 584 } 585 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 586 gap_drop_link_key_for_bd_addr(addr); 587 } 588 gap_link_key_iterator_done(&it); 589 } 590 591 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 592 if (!hci_stack->link_key_db) return 0; 593 if (!hci_stack->link_key_db->iterator_init) return 0; 594 return hci_stack->link_key_db->iterator_init(it); 595 } 596 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 597 if (!hci_stack->link_key_db) return 0; 598 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 599 } 600 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 601 if (!hci_stack->link_key_db) return; 602 hci_stack->link_key_db->iterator_done(it); 603 } 604 #endif 605 606 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 607 switch (address_type){ 608 case BD_ADDR_TYPE_LE_PUBLIC: 609 case BD_ADDR_TYPE_LE_RANDOM: 610 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 611 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 612 return true; 613 default: 614 return false; 615 } 616 } 617 618 static int hci_is_le_connection(hci_connection_t * connection){ 619 return hci_is_le_connection_type(connection->address_type); 620 } 621 622 /** 623 * count connections 624 */ 625 static int nr_hci_connections(void){ 626 int count = 0; 627 btstack_linked_item_t *it; 628 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 629 count++; 630 } 631 return count; 632 } 633 634 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 635 636 unsigned int num_packets_sent_classic = 0; 637 unsigned int num_packets_sent_le = 0; 638 639 btstack_linked_item_t *it; 640 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 641 hci_connection_t * connection = (hci_connection_t *) it; 642 if (hci_is_le_connection(connection)){ 643 num_packets_sent_le += connection->num_packets_sent; 644 } 645 if (connection->address_type == BD_ADDR_TYPE_ACL){ 646 num_packets_sent_classic += connection->num_packets_sent; 647 } 648 } 649 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 650 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 651 int free_slots_le = 0; 652 653 if (free_slots_classic < 0){ 654 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 655 return 0; 656 } 657 658 if (hci_stack->le_acl_packets_total_num){ 659 // if we have LE slots, they are used 660 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 661 if (free_slots_le < 0){ 662 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 663 return 0; 664 } 665 } else { 666 // otherwise, classic slots are used for LE, too 667 free_slots_classic -= num_packets_sent_le; 668 if (free_slots_classic < 0){ 669 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 670 return 0; 671 } 672 } 673 674 switch (address_type){ 675 case BD_ADDR_TYPE_UNKNOWN: 676 log_error("hci_number_free_acl_slots: unknown address type"); 677 return 0; 678 679 case BD_ADDR_TYPE_ACL: 680 return (uint16_t) free_slots_classic; 681 682 default: 683 if (hci_stack->le_acl_packets_total_num > 0){ 684 return (uint16_t) free_slots_le; 685 } 686 return (uint16_t) free_slots_classic; 687 } 688 } 689 690 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 691 // get connection type 692 hci_connection_t * connection = hci_connection_for_handle(con_handle); 693 if (!connection){ 694 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 695 return 0; 696 } 697 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 698 } 699 700 #ifdef ENABLE_CLASSIC 701 static int hci_number_free_sco_slots(void){ 702 unsigned int num_sco_packets_sent = 0; 703 btstack_linked_item_t *it; 704 if (hci_stack->synchronous_flow_control_enabled){ 705 // explicit flow control 706 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 707 hci_connection_t * connection = (hci_connection_t *) it; 708 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 709 num_sco_packets_sent += connection->num_packets_sent; 710 } 711 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 712 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 713 return 0; 714 } 715 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 716 } else { 717 // implicit flow control -- TODO 718 int num_ready = 0; 719 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 720 hci_connection_t * connection = (hci_connection_t *) it; 721 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 722 if (connection->sco_tx_ready == 0) continue; 723 num_ready++; 724 } 725 return num_ready; 726 } 727 } 728 #endif 729 730 // only used to send HCI Host Number Completed Packets 731 static int hci_can_send_comand_packet_transport(void){ 732 if (hci_stack->hci_packet_buffer_reserved) return 0; 733 734 // check for async hci transport implementations 735 if (hci_stack->hci_transport->can_send_packet_now){ 736 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 737 return 0; 738 } 739 } 740 return 1; 741 } 742 743 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 744 bool hci_can_send_command_packet_now(void){ 745 if (hci_can_send_comand_packet_transport() == 0) return false; 746 return hci_stack->num_cmd_packets > 0u; 747 } 748 749 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 750 // check for async hci transport implementations 751 if (!hci_stack->hci_transport->can_send_packet_now) return true; 752 return hci_stack->hci_transport->can_send_packet_now(packet_type); 753 } 754 755 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 756 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 757 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 758 } 759 760 bool hci_can_send_acl_le_packet_now(void){ 761 if (hci_stack->hci_packet_buffer_reserved) return false; 762 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 763 } 764 765 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 766 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 767 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 768 } 769 770 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 771 if (hci_stack->hci_packet_buffer_reserved) return false; 772 return hci_can_send_prepared_acl_packet_now(con_handle); 773 } 774 775 #ifdef ENABLE_CLASSIC 776 bool hci_can_send_acl_classic_packet_now(void){ 777 if (hci_stack->hci_packet_buffer_reserved) return false; 778 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 779 } 780 781 bool hci_can_send_prepared_sco_packet_now(void){ 782 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 783 if (hci_have_usb_transport()){ 784 return hci_stack->sco_can_send_now; 785 } else { 786 return hci_number_free_sco_slots() > 0; 787 } 788 } 789 790 bool hci_can_send_sco_packet_now(void){ 791 if (hci_stack->hci_packet_buffer_reserved) return false; 792 return hci_can_send_prepared_sco_packet_now(); 793 } 794 795 void hci_request_sco_can_send_now_event(void){ 796 hci_stack->sco_waiting_for_can_send_now = 1; 797 hci_notify_if_sco_can_send_now(); 798 } 799 #endif 800 801 // used for internal checks in l2cap.c 802 bool hci_is_packet_buffer_reserved(void){ 803 return hci_stack->hci_packet_buffer_reserved; 804 } 805 806 // reserves outgoing packet buffer. 807 // @return 1 if successful 808 bool hci_reserve_packet_buffer(void){ 809 if (hci_stack->hci_packet_buffer_reserved) { 810 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 811 return false; 812 } 813 hci_stack->hci_packet_buffer_reserved = true; 814 return true; 815 } 816 817 void hci_release_packet_buffer(void){ 818 hci_stack->hci_packet_buffer_reserved = false; 819 } 820 821 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 822 static int hci_transport_synchronous(void){ 823 return hci_stack->hci_transport->can_send_packet_now == NULL; 824 } 825 826 // used for debugging 827 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 828 static void hci_controller_dump_packets(void){ 829 // format: "{handle:04x}:{count:02d} " 830 char summaries[3][7 * 8 + 1]; 831 uint16_t totals[3]; 832 uint8_t index; 833 for (index = 0 ; index < 3 ; index++){ 834 summaries[index][0] = 0; 835 totals[index] = 0; 836 } 837 btstack_linked_item_t *it; 838 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 839 hci_connection_t * connection = (hci_connection_t *) it; 840 switch (connection->address_type){ 841 case BD_ADDR_TYPE_ACL: 842 index = 0; 843 break; 844 case BD_ADDR_TYPE_SCO: 845 index = 2; 846 break; 847 default: 848 index = 1; 849 break; 850 } 851 totals[index] += connection->num_packets_sent; 852 char item_text[10]; 853 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 854 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 855 } 856 for (index = 0 ; index < 3 ; index++){ 857 if (summaries[index][0] == 0){ 858 summaries[index][0] = '-'; 859 summaries[index][1] = 0; 860 } 861 } 862 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 863 } 864 #endif 865 866 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 867 868 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 869 870 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 871 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 872 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 873 max_acl_data_packet_length = hci_stack->le_data_packets_length; 874 } 875 876 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 877 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 878 max_acl_data_packet_length = connection->le_max_tx_octets; 879 } 880 #endif 881 882 log_debug("hci_send_acl_packet_fragments entered"); 883 884 uint8_t status = ERROR_CODE_SUCCESS; 885 // multiple packets could be send on a synchronous HCI transport 886 while (true){ 887 888 log_debug("hci_send_acl_packet_fragments loop entered"); 889 890 // get current data 891 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 892 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 893 bool more_fragments = false; 894 895 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 896 if (current_acl_data_packet_length > max_acl_data_packet_length){ 897 more_fragments = true; 898 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 899 } 900 901 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 902 if (acl_header_pos > 0u){ 903 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 904 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 905 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 906 } 907 908 // update header len 909 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 910 911 // count packet 912 connection->num_packets_sent++; 913 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 914 915 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 916 if (more_fragments){ 917 // update start of next fragment to send 918 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 919 } else { 920 // done 921 hci_stack->acl_fragmentation_pos = 0; 922 hci_stack->acl_fragmentation_total_size = 0; 923 } 924 925 // send packet 926 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 927 const int size = current_acl_data_packet_length + 4; 928 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 929 hci_stack->acl_fragmentation_tx_active = 1; 930 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 931 if (err != 0){ 932 // no error from HCI Transport expected 933 status = ERROR_CODE_HARDWARE_FAILURE; 934 } 935 936 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 937 hci_controller_dump_packets(); 938 #endif 939 940 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 941 942 // done yet? 943 if (!more_fragments) break; 944 945 // can send more? 946 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 947 } 948 949 log_debug("hci_send_acl_packet_fragments loop over"); 950 951 // release buffer now for synchronous transport 952 if (hci_transport_synchronous()){ 953 hci_stack->acl_fragmentation_tx_active = 0; 954 hci_release_packet_buffer(); 955 hci_emit_transport_packet_sent(); 956 } 957 958 return status; 959 } 960 961 // pre: caller has reserved the packet buffer 962 uint8_t hci_send_acl_packet_buffer(int size){ 963 btstack_assert(hci_stack->hci_packet_buffer_reserved); 964 965 uint8_t * packet = hci_stack->hci_packet_buffer; 966 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 967 968 hci_connection_t *connection = hci_connection_for_handle( con_handle); 969 if (!connection) { 970 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 971 hci_release_packet_buffer(); 972 hci_emit_transport_packet_sent(); 973 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 974 } 975 976 // check for free places on Bluetooth module 977 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 978 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 979 hci_release_packet_buffer(); 980 hci_emit_transport_packet_sent(); 981 return BTSTACK_ACL_BUFFERS_FULL; 982 } 983 984 #ifdef ENABLE_CLASSIC 985 hci_connection_timestamp(connection); 986 #endif 987 988 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 989 990 // setup data 991 hci_stack->acl_fragmentation_total_size = size; 992 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 993 994 return hci_send_acl_packet_fragments(connection); 995 } 996 997 #ifdef ENABLE_CLASSIC 998 // pre: caller has reserved the packet buffer 999 uint8_t hci_send_sco_packet_buffer(int size){ 1000 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1001 1002 uint8_t * packet = hci_stack->hci_packet_buffer; 1003 1004 // skip checks in loopback mode 1005 if (!hci_stack->loopback_mode){ 1006 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1007 1008 // check for free places on Bluetooth module 1009 if (!hci_can_send_prepared_sco_packet_now()) { 1010 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1011 hci_release_packet_buffer(); 1012 hci_emit_transport_packet_sent(); 1013 return BTSTACK_ACL_BUFFERS_FULL; 1014 } 1015 1016 // track send packet in connection struct 1017 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1018 if (!connection) { 1019 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1020 hci_release_packet_buffer(); 1021 hci_emit_transport_packet_sent(); 1022 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1023 } 1024 1025 if (hci_have_usb_transport()){ 1026 // token used 1027 hci_stack->sco_can_send_now = false; 1028 } else { 1029 if (hci_stack->synchronous_flow_control_enabled){ 1030 connection->num_packets_sent++; 1031 } else { 1032 connection->sco_tx_ready--; 1033 } 1034 } 1035 } 1036 1037 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1038 1039 #ifdef HAVE_SCO_TRANSPORT 1040 hci_stack->sco_transport->send_packet(packet, size); 1041 hci_release_packet_buffer(); 1042 hci_emit_transport_packet_sent(); 1043 1044 return 0; 1045 #else 1046 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1047 if (hci_transport_synchronous()){ 1048 hci_release_packet_buffer(); 1049 hci_emit_transport_packet_sent(); 1050 } 1051 1052 if (err != 0){ 1053 return ERROR_CODE_HARDWARE_FAILURE; 1054 } 1055 return ERROR_CODE_SUCCESS; 1056 #endif 1057 } 1058 #endif 1059 1060 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1061 static uint8_t hci_send_iso_packet_fragments(void){ 1062 1063 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1064 uint8_t status = ERROR_CODE_SUCCESS; 1065 // multiple packets could be send on a synchronous HCI transport 1066 while (true){ 1067 1068 // get current data 1069 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1070 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1071 bool more_fragments = false; 1072 1073 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1074 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1075 more_fragments = true; 1076 current_iso_data_packet_length = max_iso_data_packet_length; 1077 } 1078 1079 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1080 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1081 uint8_t pb_flags; 1082 if (iso_header_pos == 0u){ 1083 // first fragment, keep TS field 1084 pb_flags = more_fragments ? 0x00 : 0x02; 1085 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1086 } else { 1087 // later fragment, drop TS field 1088 pb_flags = more_fragments ? 0x01 : 0x03; 1089 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1090 } 1091 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1092 1093 // update header len 1094 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1095 1096 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1097 if (more_fragments){ 1098 // update start of next fragment to send 1099 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1100 } else { 1101 // done 1102 hci_stack->iso_fragmentation_pos = 0; 1103 hci_stack->iso_fragmentation_total_size = 0; 1104 } 1105 1106 // send packet 1107 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1108 const int size = current_iso_data_packet_length + 4; 1109 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1110 hci_stack->iso_fragmentation_tx_active = true; 1111 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1112 if (err != 0){ 1113 // no error from HCI Transport expected 1114 status = ERROR_CODE_HARDWARE_FAILURE; 1115 } 1116 1117 // done yet? 1118 if (!more_fragments) break; 1119 1120 // can send more? 1121 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1122 } 1123 1124 // release buffer now for synchronous transport 1125 if (hci_transport_synchronous()){ 1126 hci_stack->iso_fragmentation_tx_active = false; 1127 hci_release_packet_buffer(); 1128 hci_emit_transport_packet_sent(); 1129 } 1130 1131 return status; 1132 } 1133 1134 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1135 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1136 1137 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1138 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1139 if (iso_stream == NULL){ 1140 hci_release_packet_buffer(); 1141 hci_iso_notify_can_send_now(); 1142 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1143 } 1144 1145 // TODO: check for space on controller 1146 1147 // skip iso packets if needed 1148 if (iso_stream->num_packets_to_skip > 0){ 1149 iso_stream->num_packets_to_skip--; 1150 // pretend it was processed and trigger next one 1151 hci_release_packet_buffer(); 1152 hci_iso_notify_can_send_now(); 1153 return ERROR_CODE_SUCCESS; 1154 } 1155 1156 // track outgoing packet sent 1157 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1158 iso_stream->num_packets_sent++; 1159 1160 // setup data 1161 hci_stack->iso_fragmentation_total_size = size; 1162 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1163 1164 return hci_send_iso_packet_fragments(); 1165 } 1166 #endif 1167 1168 static void acl_handler(uint8_t *packet, uint16_t size){ 1169 1170 // get info 1171 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1172 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1173 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1174 uint16_t acl_length = READ_ACL_LENGTH(packet); 1175 1176 // ignore non-registered handle 1177 if (!conn){ 1178 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1179 return; 1180 } 1181 1182 // assert packet is complete 1183 if ((acl_length + 4u) != size){ 1184 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1185 return; 1186 } 1187 1188 #ifdef ENABLE_CLASSIC 1189 // update idle timestamp 1190 hci_connection_timestamp(conn); 1191 #endif 1192 1193 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1194 hci_stack->host_completed_packets = 1; 1195 conn->num_packets_completed++; 1196 #endif 1197 1198 // handle different packet types 1199 switch (acl_flags & 0x03u) { 1200 1201 case 0x01: // continuation fragment 1202 1203 // sanity checks 1204 if (conn->acl_recombination_pos == 0u) { 1205 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1206 return; 1207 } 1208 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1209 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1210 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1211 conn->acl_recombination_pos = 0; 1212 return; 1213 } 1214 1215 // append fragment payload (header already stored) 1216 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1217 &packet[4], acl_length); 1218 conn->acl_recombination_pos += acl_length; 1219 1220 // forward complete L2CAP packet if complete. 1221 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1222 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1223 // reset recombination buffer 1224 conn->acl_recombination_length = 0; 1225 conn->acl_recombination_pos = 0; 1226 } 1227 break; 1228 1229 case 0x02: { // first fragment 1230 1231 // sanity check 1232 if (conn->acl_recombination_pos) { 1233 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1234 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1235 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1236 } 1237 conn->acl_recombination_pos = 0; 1238 } 1239 1240 // peek into L2CAP packet! 1241 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1242 1243 // compare fragment size to L2CAP packet size 1244 if (acl_length >= (l2cap_length + 4u)){ 1245 // forward fragment as L2CAP packet 1246 hci_emit_acl_packet(packet, acl_length + 4u); 1247 } else { 1248 1249 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1250 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1251 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1252 return; 1253 } 1254 1255 // store first fragment and tweak acl length for complete package 1256 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1257 packet, acl_length + 4u); 1258 conn->acl_recombination_pos = acl_length + 4u; 1259 conn->acl_recombination_length = l2cap_length; 1260 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1261 } 1262 break; 1263 1264 } 1265 default: 1266 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1267 return; 1268 } 1269 1270 // execute main loop 1271 hci_run(); 1272 } 1273 1274 static void hci_connection_stop_timer(hci_connection_t * conn){ 1275 btstack_run_loop_remove_timer(&conn->timeout); 1276 #ifdef ENABLE_CLASSIC 1277 btstack_run_loop_remove_timer(&conn->timeout_sco); 1278 #endif 1279 } 1280 1281 static void hci_shutdown_connection(hci_connection_t *conn){ 1282 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1283 1284 #ifdef ENABLE_CLASSIC 1285 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1286 bd_addr_type_t addr_type = conn->address_type; 1287 #endif 1288 #ifdef HAVE_SCO_TRANSPORT 1289 hci_con_handle_t con_handle = conn->con_handle; 1290 #endif 1291 #endif 1292 1293 hci_connection_stop_timer(conn); 1294 1295 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1296 btstack_memory_hci_connection_free( conn ); 1297 1298 // now it's gone 1299 hci_emit_nr_connections_changed(); 1300 1301 #ifdef ENABLE_CLASSIC 1302 #ifdef ENABLE_SCO_OVER_HCI 1303 // update SCO 1304 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1305 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1306 } 1307 #endif 1308 #ifdef HAVE_SCO_TRANSPORT 1309 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1310 hci_stack->sco_transport->close(con_handle); 1311 } 1312 #endif 1313 #endif 1314 } 1315 1316 #ifdef ENABLE_CLASSIC 1317 1318 static const uint16_t hci_acl_packet_type_sizes[] = { 1319 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1320 HCI_ACL_DH1_SIZE, 0, 0, 0, 1321 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1322 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1323 }; 1324 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1325 0, // 3 slot packets 1326 1, // 5 slot packets 1327 25, // EDR 2 mpbs 1328 26, // EDR 3 mbps 1329 39, // 3 slot EDR packts 1330 40, // 5 slot EDR packet 1331 }; 1332 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1333 0x0f00, // 3 slot packets 1334 0xf000, // 5 slot packets 1335 0x1102, // EDR 2 mpbs 1336 0x2204, // EDR 3 mbps 1337 0x0300, // 3 slot EDR packts 1338 0x3000, // 5 slot EDR packet 1339 }; 1340 1341 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1342 // enable packet types based on size 1343 uint16_t packet_types = 0; 1344 unsigned int i; 1345 for (i=0;i<16;i++){ 1346 if (hci_acl_packet_type_sizes[i] == 0) continue; 1347 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1348 packet_types |= 1 << i; 1349 } 1350 } 1351 // disable packet types due to missing local supported features 1352 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1353 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1354 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1355 if (feature_set) continue; 1356 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1357 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1358 } 1359 return packet_types; 1360 } 1361 1362 uint16_t hci_usable_acl_packet_types(void){ 1363 // flip bits for "may not be used" 1364 return hci_stack->usable_packet_types_acl ^ 0x3306; 1365 } 1366 1367 static const struct { 1368 uint8_t feature_index; 1369 uint16_t feature_packet_mask; 1370 } hci_sco_packet_type_feature_requirements[] = { 1371 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1372 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1373 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1374 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1375 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1376 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1377 { 47, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_3EV3 }, // 3-slot EDR eSCO packets 1378 }; 1379 1380 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1381 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1382 unsigned int i; 1383 // disable packet types due to missing local supported features 1384 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1385 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1386 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1387 if (feature_set) continue; 1388 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); 1389 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1390 } 1391 return packet_types; 1392 } 1393 1394 uint16_t hci_usable_sco_packet_types(void){ 1395 return hci_stack->usable_packet_types_sco; 1396 } 1397 1398 #endif 1399 1400 uint8_t* hci_get_outgoing_packet_buffer(void){ 1401 // hci packet buffer is >= acl data packet length 1402 return hci_stack->hci_packet_buffer; 1403 } 1404 1405 uint16_t hci_max_acl_data_packet_length(void){ 1406 return hci_stack->acl_data_packet_length; 1407 } 1408 1409 #ifdef ENABLE_CLASSIC 1410 bool hci_extended_sco_link_supported(void){ 1411 // No. 31, byte 3, bit 7 1412 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1413 } 1414 #endif 1415 1416 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1417 // No. 54, byte 6, bit 6 1418 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1419 } 1420 1421 #ifdef ENABLE_CLASSIC 1422 static int gap_ssp_supported(void){ 1423 // No. 51, byte 6, bit 3 1424 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1425 } 1426 #endif 1427 1428 static int hci_classic_supported(void){ 1429 #ifdef ENABLE_CLASSIC 1430 // No. 37, byte 4, bit 5, = No BR/EDR Support 1431 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1432 #else 1433 return 0; 1434 #endif 1435 } 1436 1437 static int hci_le_supported(void){ 1438 #ifdef ENABLE_BLE 1439 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1440 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1441 #else 1442 return 0; 1443 #endif 1444 } 1445 1446 static bool hci_command_supported(uint8_t command_index){ 1447 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1448 } 1449 1450 #ifdef ENABLE_BLE 1451 1452 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1453 static bool hci_extended_advertising_supported(void){ 1454 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1455 } 1456 #endif 1457 1458 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1459 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1460 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1461 } else { 1462 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1463 } 1464 } 1465 1466 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1467 *addr_type = hci_stack->le_own_addr_type; 1468 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1469 } 1470 1471 #ifdef ENABLE_LE_PERIPHERAL 1472 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1473 *addr_type = hci_stack->le_advertisements_own_addr_type; 1474 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1475 }; 1476 #endif 1477 1478 #ifdef ENABLE_LE_CENTRAL 1479 1480 /** 1481 * @brief Get own addr type and address used for LE connections (Central) 1482 */ 1483 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1484 *addr_type = hci_stack->le_connection_own_addr_type; 1485 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1486 } 1487 1488 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1489 1490 uint16_t offset = 3; 1491 uint8_t num_reports = packet[offset]; 1492 offset += 1; 1493 1494 uint16_t i; 1495 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1496 for (i=0; (i<num_reports) && (offset < size);i++){ 1497 // sanity checks on data_length: 1498 uint8_t data_length = packet[offset + 8]; 1499 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1500 if ((offset + 9u + data_length + 1u) > size) return; 1501 // setup event 1502 uint8_t event_size = 10u + data_length; 1503 uint16_t pos = 0; 1504 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1505 event[pos++] = event_size; 1506 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1507 offset += 8; 1508 pos += 8; 1509 event[pos++] = packet[offset + 1 + data_length]; // rssi 1510 event[pos++] = data_length; 1511 offset++; 1512 (void)memcpy(&event[pos], &packet[offset], data_length); 1513 pos += data_length; 1514 offset += data_length + 1u; // rssi 1515 hci_emit_event(event, pos, 1); 1516 } 1517 } 1518 1519 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1520 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1521 uint16_t offset = 3; 1522 uint8_t num_reports = packet[offset++]; 1523 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1524 uint8_t i; 1525 for (i=0; (i<num_reports) && (offset < size);i++){ 1526 // sanity checks on data_length: 1527 uint16_t data_length = packet[offset + 23]; 1528 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1529 if ((offset + 24u + data_length) > size) return; 1530 uint16_t event_type = little_endian_read_16(packet, offset); 1531 offset += 2; 1532 if ((event_type & 0x10) != 0) { 1533 // setup legacy event 1534 uint8_t legacy_event_type; 1535 switch (event_type){ 1536 case 0b0010011: 1537 // ADV_IND 1538 legacy_event_type = 0; 1539 break; 1540 case 0b0010101: 1541 // ADV_DIRECT_IND 1542 legacy_event_type = 1; 1543 break; 1544 case 0b0010010: 1545 // ADV_SCAN_IND 1546 legacy_event_type = 2; 1547 break; 1548 case 0b0010000: 1549 // ADV_NONCONN_IND 1550 legacy_event_type = 3; 1551 break; 1552 case 0b0011011: 1553 case 0b0011010: 1554 // SCAN_RSP 1555 legacy_event_type = 4; 1556 break; 1557 default: 1558 legacy_event_type = 0; 1559 break; 1560 } 1561 uint16_t pos = 0; 1562 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1563 event[pos++] = 10u + data_length; 1564 event[pos++] = legacy_event_type; 1565 // copy address type + address 1566 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1567 offset += 7; 1568 pos += 7; 1569 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1570 offset += 4; 1571 // copy rssi 1572 event[pos++] = packet[offset++]; 1573 // skip periodic advertising interval and direct address 1574 offset += 9; 1575 // copy data len + data; 1576 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1577 pos += 1 +data_length; 1578 offset += 1+ data_length; 1579 hci_emit_event(event, pos, 1); 1580 } else { 1581 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1582 uint8_t report_len = 24 + data_length; 1583 event[1] = report_len; 1584 little_endian_store_16(event, 2, event_type); 1585 memcpy(&event[4], &packet[offset], report_len); 1586 offset += report_len; 1587 hci_emit_event(event, 2 + report_len, 1); 1588 } 1589 } 1590 } 1591 #endif 1592 1593 #endif 1594 #endif 1595 1596 #ifdef ENABLE_BLE 1597 #ifdef ENABLE_LE_PERIPHERAL 1598 static void hci_update_advertisements_enabled_for_current_roles(void){ 1599 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1600 // get number of active le slave connections 1601 int num_slave_connections = 0; 1602 btstack_linked_list_iterator_t it; 1603 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1604 while (btstack_linked_list_iterator_has_next(&it)){ 1605 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1606 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1607 if (con->state != OPEN) continue; 1608 if (con->role != HCI_ROLE_SLAVE) continue; 1609 if (!hci_is_le_connection(con)) continue; 1610 num_slave_connections++; 1611 } 1612 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1613 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1614 } else { 1615 hci_stack->le_advertisements_enabled_for_current_roles = false; 1616 } 1617 } 1618 #endif 1619 #endif 1620 1621 #ifdef ENABLE_CLASSIC 1622 static void gap_run_set_local_name(void){ 1623 hci_reserve_packet_buffer(); 1624 uint8_t * packet = hci_stack->hci_packet_buffer; 1625 // construct HCI Command and send 1626 uint16_t opcode = hci_write_local_name.opcode; 1627 hci_stack->last_cmd_opcode = opcode; 1628 packet[0] = opcode & 0xff; 1629 packet[1] = opcode >> 8; 1630 packet[2] = DEVICE_NAME_LEN; 1631 memset(&packet[3], 0, DEVICE_NAME_LEN); 1632 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1633 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1634 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1635 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1636 // expand '00:00:00:00:00:00' in name with bd_addr 1637 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1638 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1639 } 1640 1641 static void gap_run_set_eir_data(void){ 1642 hci_reserve_packet_buffer(); 1643 uint8_t * packet = hci_stack->hci_packet_buffer; 1644 // construct HCI Command in-place and send 1645 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1646 hci_stack->last_cmd_opcode = opcode; 1647 uint16_t offset = 0; 1648 packet[offset++] = opcode & 0xff; 1649 packet[offset++] = opcode >> 8; 1650 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1651 packet[offset++] = 0; // FEC not required 1652 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1653 if (hci_stack->eir_data){ 1654 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1655 ad_context_t context; 1656 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1657 uint8_t data_type = ad_iterator_get_data_type(&context); 1658 uint8_t size = ad_iterator_get_data_len(&context); 1659 const uint8_t *data = ad_iterator_get_data(&context); 1660 // copy item 1661 packet[offset++] = size + 1; 1662 packet[offset++] = data_type; 1663 memcpy(&packet[offset], data, size); 1664 // update name item 1665 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1666 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1667 } 1668 offset += size; 1669 } 1670 } else { 1671 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1672 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1673 packet[offset++] = bytes_to_copy + 1; 1674 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1675 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1676 // expand '00:00:00:00:00:00' in name with bd_addr 1677 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1678 } 1679 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1680 } 1681 1682 static void hci_run_gap_tasks_classic(void){ 1683 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1684 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1685 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1686 return; 1687 } 1688 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1689 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1690 gap_run_set_local_name(); 1691 return; 1692 } 1693 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1694 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1695 gap_run_set_eir_data(); 1696 return; 1697 } 1698 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1699 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1700 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1701 return; 1702 } 1703 // write page scan activity 1704 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1705 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1706 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1707 return; 1708 } 1709 // write page scan type 1710 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1711 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1712 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1713 return; 1714 } 1715 // write page timeout 1716 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1717 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1718 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1719 return; 1720 } 1721 // send scan enable 1722 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1723 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1724 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1725 return; 1726 } 1727 // send write scan activity 1728 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1729 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1730 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1731 return; 1732 } 1733 } 1734 #endif 1735 1736 #ifndef HAVE_HOST_CONTROLLER_API 1737 1738 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1739 if (!hci_stack->config) return 0; 1740 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1741 // Limit baud rate for Broadcom chipsets to 3 mbps 1742 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1743 baud_rate = 3000000; 1744 } 1745 return baud_rate; 1746 } 1747 1748 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1749 UNUSED(ds); 1750 1751 switch (hci_stack->substate){ 1752 case HCI_INIT_W4_SEND_RESET: 1753 log_info("Resend HCI Reset"); 1754 hci_stack->substate = HCI_INIT_SEND_RESET; 1755 hci_stack->num_cmd_packets = 1; 1756 hci_run(); 1757 break; 1758 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1759 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1760 if (hci_stack->hci_transport->reset_link){ 1761 hci_stack->hci_transport->reset_link(); 1762 } 1763 1764 /* fall through */ 1765 1766 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1767 log_info("Resend HCI Reset - CSR Warm Boot"); 1768 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1769 hci_stack->num_cmd_packets = 1; 1770 hci_run(); 1771 break; 1772 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1773 if (hci_stack->hci_transport->set_baudrate){ 1774 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1775 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1776 hci_stack->hci_transport->set_baudrate(baud_rate); 1777 } 1778 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1779 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1780 if (hci_stack->hci_transport->reset_link){ 1781 log_info("Link Reset"); 1782 hci_stack->hci_transport->reset_link(); 1783 } 1784 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1785 hci_run(); 1786 } 1787 break; 1788 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1789 // otherwise continue 1790 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1791 hci_send_cmd(&hci_read_local_supported_commands); 1792 break; 1793 default: 1794 break; 1795 } 1796 } 1797 #endif 1798 1799 static void hci_initializing_next_state(void){ 1800 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1801 } 1802 1803 static void hci_init_done(void){ 1804 // done. tell the app 1805 log_info("hci_init_done -> HCI_STATE_WORKING"); 1806 hci_stack->state = HCI_STATE_WORKING; 1807 hci_emit_state(); 1808 } 1809 1810 // assumption: hci_can_send_command_packet_now() == true 1811 static void hci_initializing_run(void){ 1812 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1813 1814 if (!hci_can_send_command_packet_now()) return; 1815 1816 #ifndef HAVE_HOST_CONTROLLER_API 1817 bool need_baud_change = hci_stack->config 1818 && hci_stack->chipset 1819 && hci_stack->chipset->set_baudrate_command 1820 && hci_stack->hci_transport->set_baudrate 1821 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1822 #endif 1823 1824 switch (hci_stack->substate){ 1825 case HCI_INIT_SEND_RESET: 1826 hci_state_reset(); 1827 1828 #ifndef HAVE_HOST_CONTROLLER_API 1829 // prepare reset if command complete not received in 100ms 1830 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1831 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1832 btstack_run_loop_add_timer(&hci_stack->timeout); 1833 #endif 1834 // send command 1835 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1836 hci_send_cmd(&hci_reset); 1837 break; 1838 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1839 hci_send_cmd(&hci_read_local_version_information); 1840 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1841 break; 1842 1843 #ifndef HAVE_HOST_CONTROLLER_API 1844 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1845 hci_state_reset(); 1846 // prepare reset if command complete not received in 100ms 1847 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1848 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1849 btstack_run_loop_add_timer(&hci_stack->timeout); 1850 // send command 1851 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1852 hci_send_cmd(&hci_reset); 1853 break; 1854 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1855 hci_state_reset(); 1856 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1857 hci_send_cmd(&hci_reset); 1858 break; 1859 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1860 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1861 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1862 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1863 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1864 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1865 break; 1866 } 1867 case HCI_INIT_SET_BD_ADDR: 1868 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1869 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1870 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1871 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1872 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1873 break; 1874 case HCI_INIT_SEND_READ_LOCAL_NAME: 1875 #ifdef ENABLE_CLASSIC 1876 hci_send_cmd(&hci_read_local_name); 1877 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1878 break; 1879 #endif 1880 /* fall through */ 1881 1882 case HCI_INIT_SEND_BAUD_CHANGE: 1883 if (need_baud_change) { 1884 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1885 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1886 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1887 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1888 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1889 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1890 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1891 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1892 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1893 btstack_run_loop_add_timer(&hci_stack->timeout); 1894 } 1895 break; 1896 } 1897 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1898 1899 /* fall through */ 1900 1901 case HCI_INIT_CUSTOM_INIT: 1902 case HCI_INIT_CUSTOM_PRE_INIT: 1903 // Custom initialization 1904 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1905 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1906 bool send_cmd = false; 1907 switch (hci_stack->chipset_result){ 1908 case BTSTACK_CHIPSET_VALID_COMMAND: 1909 send_cmd = true; 1910 switch (hci_stack->substate){ 1911 case HCI_INIT_CUSTOM_INIT: 1912 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1913 break; 1914 case HCI_INIT_CUSTOM_PRE_INIT: 1915 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1916 break; 1917 default: 1918 btstack_assert(false); 1919 break; 1920 } 1921 break; 1922 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1923 send_cmd = true; 1924 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1925 log_info("CSR Warm Boot"); 1926 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1927 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1928 btstack_run_loop_add_timer(&hci_stack->timeout); 1929 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1930 && hci_stack->config 1931 && hci_stack->chipset 1932 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1933 && hci_stack->hci_transport->set_baudrate 1934 && hci_transport_uart_get_main_baud_rate()){ 1935 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1936 } else { 1937 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1938 } 1939 break; 1940 default: 1941 break; 1942 } 1943 1944 if (send_cmd){ 1945 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1946 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1947 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1948 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1949 break; 1950 } 1951 log_info("Init script done"); 1952 1953 // Custom Pre-Init complete, start regular init with HCI Reset 1954 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1955 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1956 hci_send_cmd(&hci_reset); 1957 break; 1958 } 1959 1960 // Init script download on Broadcom chipsets causes: 1961 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1962 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1963 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1964 1965 // - baud rate to reset, restore UART baud rate if needed 1966 if (need_baud_change) { 1967 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1968 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1969 hci_stack->hci_transport->set_baudrate(baud_rate); 1970 } 1971 1972 uint16_t bcm_delay_ms = 300; 1973 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1974 // -> Work around: wait here. 1975 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1976 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1977 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1978 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1979 btstack_run_loop_add_timer(&hci_stack->timeout); 1980 break; 1981 } 1982 } 1983 #endif 1984 /* fall through */ 1985 1986 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1987 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1988 hci_send_cmd(&hci_read_local_supported_commands); 1989 break; 1990 case HCI_INIT_READ_BD_ADDR: 1991 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1992 hci_send_cmd(&hci_read_bd_addr); 1993 break; 1994 case HCI_INIT_READ_BUFFER_SIZE: 1995 // only read buffer size if supported 1996 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1997 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1998 hci_send_cmd(&hci_read_buffer_size); 1999 break; 2000 } 2001 2002 /* fall through */ 2003 2004 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2005 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2006 hci_send_cmd(&hci_read_local_supported_features); 2007 break; 2008 2009 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2010 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2011 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2012 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2013 break; 2014 case HCI_INIT_HOST_BUFFER_SIZE: 2015 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2016 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2017 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2018 break; 2019 #endif 2020 2021 case HCI_INIT_SET_EVENT_MASK: 2022 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2023 if (hci_le_supported()){ 2024 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2025 } else { 2026 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2027 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2028 } 2029 break; 2030 2031 case HCI_INIT_SET_EVENT_MASK_2: 2032 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2033 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2034 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2035 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2036 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2037 // Encryption Change Event v2 - bit 25 2038 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2039 break; 2040 } 2041 2042 #ifdef ENABLE_CLASSIC 2043 /* fall through */ 2044 2045 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2046 if (hci_classic_supported() && gap_ssp_supported()){ 2047 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2048 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2049 break; 2050 } 2051 2052 /* fall through */ 2053 2054 case HCI_INIT_WRITE_INQUIRY_MODE: 2055 if (hci_classic_supported()){ 2056 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2057 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2058 break; 2059 } 2060 2061 /* fall through */ 2062 2063 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2064 // skip write secure connections host support if not supported or disabled 2065 if (hci_classic_supported() && hci_stack->secure_connections_enable 2066 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2067 hci_stack->secure_connections_active = true; 2068 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2069 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2070 break; 2071 } 2072 2073 /* fall through */ 2074 2075 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2076 // skip set min encryption key size 2077 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2078 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2079 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2080 break; 2081 } 2082 2083 #ifdef ENABLE_SCO_OVER_HCI 2084 /* fall through */ 2085 2086 // only sent if ENABLE_SCO_OVER_HCI is defined 2087 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2088 // skip write synchronous flow control if not supported 2089 if (hci_classic_supported() 2090 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2091 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2092 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2093 break; 2094 } 2095 /* fall through */ 2096 2097 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2098 // skip write default erroneous data reporting if not supported 2099 if (hci_classic_supported() 2100 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2101 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2102 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2103 break; 2104 } 2105 #endif 2106 2107 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2108 /* fall through */ 2109 2110 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2111 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2112 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2113 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2114 #ifdef ENABLE_SCO_OVER_HCI 2115 log_info("BCM: Route SCO data via HCI transport"); 2116 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2117 #endif 2118 #ifdef ENABLE_SCO_OVER_PCM 2119 log_info("BCM: Route SCO data via PCM interface"); 2120 #ifdef ENABLE_BCM_PCM_WBS 2121 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2122 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2123 #else 2124 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2125 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2126 #endif 2127 #endif 2128 break; 2129 } 2130 #endif 2131 2132 #ifdef ENABLE_SCO_OVER_PCM 2133 /* fall through */ 2134 2135 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2136 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2137 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2138 log_info("BCM: Config PCM interface for I2S"); 2139 #ifdef ENABLE_BCM_PCM_WBS 2140 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2141 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2142 #else 2143 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2144 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2145 #endif 2146 break; 2147 } 2148 #endif 2149 #endif 2150 2151 #ifdef ENABLE_BLE 2152 /* fall through */ 2153 2154 // LE INIT 2155 case HCI_INIT_LE_READ_BUFFER_SIZE: 2156 if (hci_le_supported()){ 2157 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2158 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2159 hci_send_cmd(&hci_le_read_buffer_size_v2); 2160 } else { 2161 hci_send_cmd(&hci_le_read_buffer_size); 2162 } 2163 break; 2164 } 2165 2166 /* fall through */ 2167 2168 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2169 // skip write le host if not supported (e.g. on LE only EM9301) 2170 if (hci_le_supported() 2171 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2172 // LE Supported Host = 1, Simultaneous Host = 0 2173 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2174 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2175 break; 2176 } 2177 2178 /* fall through */ 2179 2180 case HCI_INIT_LE_SET_EVENT_MASK: 2181 if (hci_le_supported()){ 2182 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2183 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2184 break; 2185 } 2186 #endif 2187 2188 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2189 /* fall through */ 2190 2191 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2192 if (hci_le_supported() 2193 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2194 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2195 hci_send_cmd(&hci_le_read_maximum_data_length); 2196 break; 2197 } 2198 2199 /* fall through */ 2200 2201 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2202 if (hci_le_supported() 2203 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2204 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2205 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2206 break; 2207 } 2208 #endif 2209 2210 #ifdef ENABLE_LE_CENTRAL 2211 /* fall through */ 2212 2213 case HCI_INIT_READ_WHITE_LIST_SIZE: 2214 if (hci_le_supported()){ 2215 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2216 hci_send_cmd(&hci_le_read_white_list_size); 2217 break; 2218 } 2219 2220 #endif 2221 2222 #ifdef ENABLE_LE_PERIPHERAL 2223 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2224 /* fall through */ 2225 2226 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2227 if (hci_extended_advertising_supported()){ 2228 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2229 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2230 break; 2231 } 2232 #endif 2233 #endif 2234 /* fall through */ 2235 2236 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2237 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2238 if (hci_le_supported()) { 2239 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2240 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2241 break; 2242 } 2243 #endif 2244 2245 /* fall through */ 2246 2247 case HCI_INIT_DONE: 2248 hci_stack->substate = HCI_INIT_DONE; 2249 // main init sequence complete 2250 #ifdef ENABLE_CLASSIC 2251 // check if initial Classic GAP Tasks are completed 2252 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2253 hci_run_gap_tasks_classic(); 2254 break; 2255 } 2256 #endif 2257 #ifdef ENABLE_BLE 2258 #ifdef ENABLE_LE_CENTRAL 2259 // check if initial LE GAP Tasks are completed 2260 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2261 hci_run_general_gap_le(); 2262 break; 2263 } 2264 #endif 2265 #endif 2266 hci_init_done(); 2267 break; 2268 2269 default: 2270 return; 2271 } 2272 } 2273 2274 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2275 bool command_completed = false; 2276 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2277 uint16_t opcode = little_endian_read_16(packet,3); 2278 if (opcode == hci_stack->last_cmd_opcode){ 2279 command_completed = true; 2280 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2281 } else { 2282 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2283 } 2284 } 2285 2286 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2287 uint8_t status = packet[2]; 2288 uint16_t opcode = little_endian_read_16(packet,4); 2289 if (opcode == hci_stack->last_cmd_opcode){ 2290 if (status){ 2291 command_completed = true; 2292 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2293 } else { 2294 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2295 } 2296 } else { 2297 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2298 } 2299 } 2300 #ifndef HAVE_HOST_CONTROLLER_API 2301 // Vendor == CSR 2302 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2303 // TODO: track actual command 2304 command_completed = true; 2305 } 2306 2307 // Vendor == Toshiba 2308 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2309 // TODO: track actual command 2310 command_completed = true; 2311 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2312 hci_stack->num_cmd_packets = 1; 2313 } 2314 #endif 2315 2316 return command_completed; 2317 } 2318 2319 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2320 2321 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2322 2323 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2324 2325 #ifndef HAVE_HOST_CONTROLLER_API 2326 2327 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2328 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2329 // 2330 // HCI Reset 2331 // Timeout 100 ms 2332 // HCI Reset 2333 // Command Complete Reset 2334 // HCI Read Local Version Information 2335 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2336 // hang... 2337 // 2338 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2339 if (!command_completed 2340 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2341 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2342 2343 uint16_t opcode = little_endian_read_16(packet,3); 2344 if (opcode == hci_reset.opcode){ 2345 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2346 return; 2347 } 2348 } 2349 2350 // CSR & H5 2351 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2352 if (!command_completed 2353 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2354 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2355 2356 uint16_t opcode = little_endian_read_16(packet,3); 2357 if (opcode == hci_reset.opcode){ 2358 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2359 return; 2360 } 2361 } 2362 2363 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2364 // fix: Correct substate and behave as command below 2365 if (command_completed){ 2366 switch (hci_stack->substate){ 2367 case HCI_INIT_SEND_RESET: 2368 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2369 break; 2370 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2371 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2372 break; 2373 default: 2374 break; 2375 } 2376 } 2377 2378 #endif 2379 2380 if (!command_completed) return; 2381 2382 bool need_baud_change = false; 2383 bool need_addr_change = false; 2384 2385 #ifndef HAVE_HOST_CONTROLLER_API 2386 need_baud_change = hci_stack->config 2387 && hci_stack->chipset 2388 && hci_stack->chipset->set_baudrate_command 2389 && hci_stack->hci_transport->set_baudrate 2390 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2391 2392 need_addr_change = hci_stack->custom_bd_addr_set 2393 && hci_stack->chipset 2394 && hci_stack->chipset->set_bd_addr_command; 2395 #endif 2396 2397 switch(hci_stack->substate){ 2398 2399 #ifndef HAVE_HOST_CONTROLLER_API 2400 case HCI_INIT_SEND_RESET: 2401 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2402 // fix: just correct substate and behave as command below 2403 2404 /* fall through */ 2405 #endif 2406 2407 case HCI_INIT_W4_SEND_RESET: 2408 btstack_run_loop_remove_timer(&hci_stack->timeout); 2409 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2410 return; 2411 2412 #ifndef HAVE_HOST_CONTROLLER_API 2413 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2414 // for STLC2500D, baud rate change already happened. 2415 // for others, baud rate gets changed now 2416 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2417 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2418 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2419 hci_stack->hci_transport->set_baudrate(baud_rate); 2420 } 2421 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2422 return; 2423 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2424 btstack_run_loop_remove_timer(&hci_stack->timeout); 2425 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2426 return; 2427 case HCI_INIT_W4_CUSTOM_INIT: 2428 // repeat custom init 2429 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2430 return; 2431 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2432 // repeat custom init 2433 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2434 return; 2435 #endif 2436 2437 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2438 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2439 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2440 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2441 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2442 return; 2443 } 2444 if (need_addr_change){ 2445 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2446 return; 2447 } 2448 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2449 return; 2450 #ifndef HAVE_HOST_CONTROLLER_API 2451 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2452 if (need_baud_change){ 2453 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2454 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2455 hci_stack->hci_transport->set_baudrate(baud_rate); 2456 } 2457 if (need_addr_change){ 2458 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2459 return; 2460 } 2461 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2462 return; 2463 case HCI_INIT_W4_SET_BD_ADDR: 2464 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2465 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2466 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2467 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2468 return; 2469 } 2470 // skipping st warm boot 2471 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2472 return; 2473 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2474 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2475 return; 2476 #endif 2477 2478 case HCI_INIT_DONE: 2479 // set state if we came here by fall through 2480 hci_stack->substate = HCI_INIT_DONE; 2481 return; 2482 2483 default: 2484 break; 2485 } 2486 hci_initializing_next_state(); 2487 } 2488 2489 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2490 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2491 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2492 // check if we have been aware of the HCI connection 2493 switch (conn->state){ 2494 case SENT_CREATE_CONNECTION: 2495 case RECEIVED_CONNECTION_REQUEST: 2496 case ACCEPTED_CONNECTION_REQUEST: 2497 break; 2498 default: 2499 return; 2500 } 2501 2502 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2503 bd_addr_t bd_address; 2504 (void)memcpy(&bd_address, conn->address, 6); 2505 2506 #ifdef ENABLE_CLASSIC 2507 // cache needed data 2508 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2509 #endif 2510 2511 // connection failed, remove entry 2512 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2513 btstack_memory_hci_connection_free( conn ); 2514 2515 #ifdef ENABLE_CLASSIC 2516 // notify client if dedicated bonding 2517 if (notify_dedicated_bonding_failed){ 2518 log_info("hci notify_dedicated_bonding_failed"); 2519 hci_emit_dedicated_bonding_result(bd_address, status); 2520 } 2521 2522 // if authentication error, also delete link key 2523 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2524 gap_drop_link_key_for_bd_addr(bd_address); 2525 } 2526 #else 2527 UNUSED(status); 2528 #endif 2529 } 2530 2531 #ifdef ENABLE_CLASSIC 2532 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2533 // SSP Controller 2534 if (features[6] & (1 << 3)){ 2535 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2536 } 2537 // eSCO 2538 if (features[3] & (1<<7)){ 2539 conn->remote_supported_features[0] |= 1; 2540 } 2541 // Extended features 2542 if (features[7] & (1<<7)){ 2543 conn->remote_supported_features[0] |= 2; 2544 } 2545 // SCO packet types 2546 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2547 } 2548 2549 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2550 // SSP Host 2551 if (features[0] & (1 << 0)){ 2552 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2553 } 2554 // SC Host 2555 if (features[0] & (1 << 3)){ 2556 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2557 } 2558 } 2559 2560 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2561 // SC Controller 2562 if (features[1] & (1 << 0)){ 2563 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2564 } 2565 } 2566 2567 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2568 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2569 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2570 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2571 if (conn->bonding_flags & BONDING_DEDICATED){ 2572 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2573 } 2574 } 2575 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2576 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2577 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2578 } 2579 2580 #endif 2581 2582 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2583 // handle BT initialization 2584 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2585 hci_initializing_event_handler(packet, size); 2586 } 2587 2588 // help with BT sleep 2589 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2590 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2591 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2592 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2593 hci_initializing_next_state(); 2594 } 2595 } 2596 2597 #ifdef ENABLE_CLASSIC 2598 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2599 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2600 conn->requested_security_level = LEVEL_0; 2601 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2602 hci_emit_security_level(conn->con_handle, security_level); 2603 2604 // dedicated bonding 2605 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2606 conn->bonding_flags &= ~BONDING_DEDICATED; 2607 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2608 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2609 // emit dedicated bonding complete, don't disconnect 2610 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2611 #else 2612 // request disconnect, event is emitted after disconnect 2613 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2614 #endif 2615 } 2616 } 2617 2618 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2619 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2620 conn->encryption_key_size = encryption_key_size; 2621 2622 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2623 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2624 hci_handle_mutual_authentication_completed(conn); 2625 } else { 2626 // otherwise trigger remote feature request and send authentication request 2627 hci_trigger_remote_features_for_connection(conn); 2628 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2629 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2630 } 2631 } 2632 } 2633 #endif 2634 2635 static void hci_store_local_supported_commands(const uint8_t * packet){ 2636 // create mapping table 2637 #define X(name, offset, bit) { offset, bit }, 2638 static struct { 2639 uint8_t byte_offset; 2640 uint8_t bit_position; 2641 } supported_hci_commands_map [] = { 2642 SUPPORTED_HCI_COMMANDS 2643 }; 2644 #undef X 2645 2646 // create names for debug purposes 2647 #ifdef ENABLE_LOG_DEBUG 2648 #define X(name, offset, bit) #name, 2649 static const char * command_names[] = { 2650 SUPPORTED_HCI_COMMANDS 2651 }; 2652 #undef X 2653 #endif 2654 2655 hci_stack->local_supported_commands = 0; 2656 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2657 uint16_t i; 2658 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2659 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2660 #ifdef ENABLE_LOG_DEBUG 2661 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); 2662 #else 2663 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2664 #endif 2665 hci_stack->local_supported_commands |= (1LU << i); 2666 } 2667 } 2668 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2669 } 2670 2671 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2672 UNUSED(size); 2673 2674 uint16_t manufacturer; 2675 #ifdef ENABLE_CLASSIC 2676 hci_con_handle_t handle; 2677 hci_connection_t * conn; 2678 #endif 2679 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2680 uint8_t status; 2681 #endif 2682 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2683 le_audio_cig_t * cig; 2684 #endif 2685 2686 // get num cmd packets - limit to 1 to reduce complexity 2687 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2688 2689 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2690 switch (opcode){ 2691 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2692 if (packet[5]) break; 2693 // terminate, name 248 chars 2694 packet[6+248] = 0; 2695 log_info("local name: %s", &packet[6]); 2696 break; 2697 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2698 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2699 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2700 uint16_t acl_len = little_endian_read_16(packet, 6); 2701 uint16_t sco_len = packet[8]; 2702 2703 // determine usable ACL/SCO payload size 2704 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2705 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2706 2707 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2708 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2709 2710 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2711 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2712 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2713 } 2714 break; 2715 case HCI_OPCODE_HCI_READ_RSSI: 2716 if (packet[5] == ERROR_CODE_SUCCESS){ 2717 uint8_t event[5]; 2718 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2719 event[1] = 3; 2720 (void)memcpy(&event[2], &packet[6], 3); 2721 hci_emit_event(event, sizeof(event), 1); 2722 } 2723 break; 2724 #ifdef ENABLE_BLE 2725 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2726 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2727 hci_stack->le_iso_packets_total_num = packet[11]; 2728 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2729 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2730 2731 /* fall through */ 2732 2733 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2734 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2735 hci_stack->le_acl_packets_total_num = packet[8]; 2736 // determine usable ACL payload size 2737 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2738 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2739 } 2740 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); 2741 break; 2742 #endif 2743 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2744 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2745 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2746 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2747 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); 2748 break; 2749 #endif 2750 #ifdef ENABLE_LE_CENTRAL 2751 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2752 hci_stack->le_whitelist_capacity = packet[6]; 2753 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2754 break; 2755 #endif 2756 #ifdef ENABLE_LE_PERIPHERAL 2757 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2758 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2759 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2760 break; 2761 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2762 if (hci_stack->le_advertising_set_in_current_command != 0) { 2763 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2764 hci_stack->le_advertising_set_in_current_command = 0; 2765 if (advertising_set == NULL) break; 2766 uint8_t adv_status = packet[6]; 2767 uint8_t tx_power = packet[7]; 2768 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 }; 2769 if (adv_status == 0){ 2770 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2771 } 2772 hci_emit_event(event, sizeof(event), 1); 2773 } 2774 break; 2775 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2776 if (hci_stack->le_advertising_set_in_current_command != 0) { 2777 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2778 hci_stack->le_advertising_set_in_current_command = 0; 2779 if (advertising_set == NULL) break; 2780 uint8_t adv_status = packet[5]; 2781 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2782 if (adv_status == 0){ 2783 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2784 } 2785 hci_emit_event(event, sizeof(event), 1); 2786 } 2787 break; 2788 #endif 2789 #endif 2790 case HCI_OPCODE_HCI_READ_BD_ADDR: 2791 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2792 log_info("Local Address, Status: 0x%02x: Addr: %s", packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack->local_bd_addr)); 2793 #ifdef ENABLE_CLASSIC 2794 if (hci_stack->link_key_db){ 2795 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2796 } 2797 #endif 2798 break; 2799 #ifdef ENABLE_CLASSIC 2800 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2801 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2802 break; 2803 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2804 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2805 if (status == ERROR_CODE_SUCCESS) { 2806 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2807 } else { 2808 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2809 } 2810 break; 2811 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2812 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2813 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2814 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2815 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2816 hci_emit_event(event, sizeof(event), 1); 2817 } 2818 break; 2819 #endif 2820 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2821 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2822 2823 #ifdef ENABLE_CLASSIC 2824 // determine usable ACL packet types based on host buffer size and supported features 2825 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]); 2826 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2827 // determine usable SCO packet types based on supported features 2828 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2829 &hci_stack->local_supported_features[0]); 2830 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2831 #endif 2832 // Classic/LE 2833 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2834 break; 2835 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2836 manufacturer = little_endian_read_16(packet, 10); 2837 // map Cypress & Infineon to Broadcom 2838 switch (manufacturer){ 2839 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2840 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2841 log_info("Treat Cypress/Infineon as Broadcom"); 2842 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2843 little_endian_store_16(packet, 10, manufacturer); 2844 break; 2845 default: 2846 break; 2847 } 2848 hci_stack->manufacturer = manufacturer; 2849 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2850 break; 2851 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2852 hci_store_local_supported_commands(packet); 2853 break; 2854 #ifdef ENABLE_CLASSIC 2855 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2856 if (packet[5]) return; 2857 hci_stack->synchronous_flow_control_enabled = 1; 2858 break; 2859 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2860 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2861 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2862 conn = hci_connection_for_handle(handle); 2863 if (conn != NULL) { 2864 uint8_t key_size = 0; 2865 if (status == 0){ 2866 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2867 log_info("Handle %04x key Size: %u", handle, key_size); 2868 } else { 2869 key_size = 1; 2870 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2871 } 2872 hci_handle_read_encryption_key_size_complete(conn, key_size); 2873 } 2874 break; 2875 // assert pairing complete event is emitted. 2876 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2877 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2878 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2879 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2880 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2881 // lookup connection by gap pairing addr 2882 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2883 if (conn == NULL) break; 2884 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2885 break; 2886 2887 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2888 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2889 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2890 uint8_t event[67]; 2891 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2892 event[1] = 65; 2893 (void)memset(&event[2], 0, 65); 2894 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2895 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2896 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2897 event[2] = 3; 2898 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2899 } else { 2900 event[2] = 1; 2901 } 2902 } 2903 hci_emit_event(event, sizeof(event), 0); 2904 break; 2905 } 2906 2907 // note: only needed if user does not provide OOB data 2908 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2909 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2910 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2911 if (conn == NULL) break; 2912 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2913 break; 2914 #endif 2915 #endif 2916 #ifdef ENABLE_BLE 2917 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2918 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2919 // lookup CIG 2920 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2921 if (cig != NULL){ 2922 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2923 uint8_t i = 0; 2924 if (status == ERROR_CODE_SUCCESS){ 2925 // assign CIS handles to pre-allocated CIS 2926 btstack_linked_list_iterator_t it; 2927 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2928 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2929 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2930 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2931 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2932 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2933 iso_stream->cis_handle = cis_handle; 2934 cig->cis_con_handles[i] = cis_handle; 2935 i++; 2936 } 2937 } 2938 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2939 hci_emit_cig_created(cig, status); 2940 } else { 2941 hci_emit_cig_created(cig, status); 2942 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2943 } 2944 } 2945 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2946 break; 2947 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2948 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2949 if (status != ERROR_CODE_SUCCESS){ 2950 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2951 } 2952 break; 2953 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2954 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2955 if (status != ERROR_CODE_SUCCESS){ 2956 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2957 } 2958 break; 2959 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2960 // lookup BIG by state 2961 btstack_linked_list_iterator_t it; 2962 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2963 while (btstack_linked_list_iterator_has_next(&it)) { 2964 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2965 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2966 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2967 if (status == ERROR_CODE_SUCCESS){ 2968 big->state_vars.next_bis++; 2969 if (big->state_vars.next_bis == big->num_bis){ 2970 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2971 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2972 } else { 2973 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2974 } 2975 } else { 2976 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2977 big->state_vars.status = status; 2978 } 2979 return; 2980 } 2981 } 2982 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2983 while (btstack_linked_list_iterator_has_next(&it)) { 2984 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2985 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2986 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2987 if (status == ERROR_CODE_SUCCESS){ 2988 big_sync->state_vars.next_bis++; 2989 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2990 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2991 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2992 } else { 2993 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2994 } 2995 } else { 2996 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2997 big_sync->state_vars.status = status; 2998 } 2999 return; 3000 } 3001 } 3002 // Lookup CIS via active group operation 3003 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3004 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3005 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3006 3007 // lookup CIS by state 3008 btstack_linked_list_iterator_t it; 3009 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3010 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3011 while (btstack_linked_list_iterator_has_next(&it)){ 3012 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3013 handle = iso_stream->cis_handle; 3014 bool emit_cis_created = false; 3015 switch (iso_stream->state){ 3016 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3017 if (status != ERROR_CODE_SUCCESS){ 3018 emit_cis_created = true; 3019 break; 3020 } 3021 if (iso_stream->max_sdu_c_to_p > 0){ 3022 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 3023 } else { 3024 emit_cis_created = true; 3025 } 3026 break; 3027 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3028 emit_cis_created = true; 3029 break; 3030 default: 3031 break; 3032 } 3033 if (emit_cis_created){ 3034 hci_cis_handle_created(iso_stream, status); 3035 } 3036 } 3037 } else { 3038 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3039 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3040 if (cig != NULL) { 3041 // emit cis created if all ISO Paths have been created 3042 // assume we are central 3043 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3044 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3045 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3046 // if outgoing has been setup, or incoming was setup but outgoing not required 3047 if ((cis_direction == 1) || (outgoing_needed == false)){ 3048 // lookup iso stream by cig/cis 3049 while (btstack_linked_list_iterator_has_next(&it)) { 3050 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3051 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3052 hci_cis_handle_created(iso_stream, status); 3053 } 3054 } 3055 } 3056 // next state 3057 cig->state_vars.next_cis++; 3058 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3059 } 3060 } 3061 } 3062 break; 3063 } 3064 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3065 // lookup BIG by state 3066 btstack_linked_list_iterator_t it; 3067 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3068 while (btstack_linked_list_iterator_has_next(&it)) { 3069 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3070 uint8_t big_handle = big_sync->big_handle; 3071 switch (big_sync->state){ 3072 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3073 btstack_linked_list_iterator_remove(&it); 3074 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3075 return; 3076 default: 3077 btstack_linked_list_iterator_remove(&it); 3078 hci_emit_big_sync_stopped(big_handle); 3079 return; 3080 } 3081 } 3082 break; 3083 } 3084 #endif 3085 #endif 3086 default: 3087 break; 3088 } 3089 } 3090 3091 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3092 UNUSED(size); 3093 3094 // get num cmd packets - limit to 1 to reduce complexity 3095 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3096 3097 // get opcode and command status 3098 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3099 3100 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3101 uint8_t status = hci_event_command_status_get_status(packet); 3102 #endif 3103 3104 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3105 bd_addr_type_t addr_type; 3106 bd_addr_t addr; 3107 #endif 3108 3109 switch (opcode){ 3110 #ifdef ENABLE_CLASSIC 3111 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3112 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3113 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3114 #endif 3115 #ifdef ENABLE_LE_CENTRAL 3116 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3117 #endif 3118 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3119 addr_type = hci_stack->outgoing_addr_type; 3120 memcpy(addr, hci_stack->outgoing_addr, 6); 3121 3122 // reset outgoing address info 3123 memset(hci_stack->outgoing_addr, 0, 6); 3124 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3125 3126 // on error 3127 if (status != ERROR_CODE_SUCCESS){ 3128 #ifdef ENABLE_LE_CENTRAL 3129 if (hci_is_le_connection_type(addr_type)){ 3130 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3131 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3132 } 3133 #endif 3134 // error => outgoing connection failed 3135 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3136 if (conn != NULL){ 3137 hci_handle_connection_failed(conn, status); 3138 } 3139 } 3140 break; 3141 #endif 3142 #ifdef ENABLE_CLASSIC 3143 case HCI_OPCODE_HCI_INQUIRY: 3144 if (status == ERROR_CODE_SUCCESS) { 3145 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3146 } else { 3147 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3148 } 3149 break; 3150 #endif 3151 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3152 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3153 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3154 if (status == ERROR_CODE_SUCCESS){ 3155 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3156 } else { 3157 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3158 } 3159 break; 3160 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3161 default: 3162 break; 3163 } 3164 } 3165 3166 #ifdef ENABLE_BLE 3167 static void event_handle_le_connection_complete(const uint8_t * packet){ 3168 bd_addr_t addr; 3169 bd_addr_type_t addr_type; 3170 hci_connection_t * conn; 3171 3172 // read fields 3173 uint8_t status = packet[3]; 3174 hci_role_t role = (hci_role_t) packet[6]; 3175 3176 // support different connection complete events 3177 uint16_t conn_interval; 3178 switch (packet[2]){ 3179 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3180 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3181 break; 3182 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3183 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3184 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3185 break; 3186 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3187 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3188 break; 3189 #endif 3190 default: 3191 btstack_unreachable(); 3192 return; 3193 } 3194 3195 // Connection management 3196 reverse_bd_addr(&packet[8], addr); 3197 addr_type = (bd_addr_type_t)packet[7]; 3198 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3199 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3200 3201 #ifdef ENABLE_LE_CENTRAL 3202 // handle error: error is reported only to the initiator -> outgoing connection 3203 if (status){ 3204 3205 // handle cancelled outgoing connection 3206 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3207 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3208 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3209 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3210 // reset state 3211 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3212 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3213 // get outgoing connection conn struct for direct connect 3214 conn = gap_get_outgoing_connection(); 3215 } 3216 3217 // outgoing le connection establishment is done 3218 if (conn){ 3219 // remove entry 3220 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3221 btstack_memory_hci_connection_free( conn ); 3222 } 3223 return; 3224 } 3225 #endif 3226 3227 // on success, both hosts receive connection complete event 3228 if (role == HCI_ROLE_MASTER){ 3229 #ifdef ENABLE_LE_CENTRAL 3230 // if we're master on an le connection, it was an outgoing connection and we're done with it 3231 // note: no hci_connection_t object exists yet for connect with whitelist 3232 if (hci_is_le_connection_type(addr_type)){ 3233 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3234 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3235 } 3236 #endif 3237 } else { 3238 #ifdef ENABLE_LE_PERIPHERAL 3239 // if we're slave, it was an incoming connection, advertisements have stopped 3240 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3241 #endif 3242 } 3243 3244 // LE connections are auto-accepted, so just create a connection if there isn't one already 3245 if (!conn){ 3246 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3247 } 3248 3249 // no memory, sorry. 3250 if (!conn){ 3251 return; 3252 } 3253 3254 conn->state = OPEN; 3255 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3256 conn->le_connection_interval = conn_interval; 3257 3258 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3259 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3260 3261 #ifdef ENABLE_LE_PERIPHERAL 3262 if (role == HCI_ROLE_SLAVE){ 3263 hci_update_advertisements_enabled_for_current_roles(); 3264 } 3265 #endif 3266 3267 // init unenhanced att bearer mtu 3268 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3269 conn->att_connection.mtu_exchanged = false; 3270 3271 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3272 3273 // restart timer 3274 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3275 // btstack_run_loop_add_timer(&conn->timeout); 3276 3277 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3278 3279 hci_emit_nr_connections_changed(); 3280 } 3281 #endif 3282 3283 #ifdef ENABLE_CLASSIC 3284 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){ 3285 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3286 // LEVEL_4 is tested by l2cap 3287 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3288 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3289 if (level >= LEVEL_3){ 3290 // MITM not possible without keyboard or display 3291 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3292 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3293 3294 // MITM possible if one side has keyboard and the other has keyboard or display 3295 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3296 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3297 3298 // MITM not possible if one side has only display and other side has no keyboard 3299 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3300 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3301 } 3302 // LEVEL 2 requires SSP, which is a given 3303 return true; 3304 } 3305 3306 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3307 // get requested security level 3308 gap_security_level_t requested_security_level = conn->requested_security_level; 3309 if (hci_stack->gap_secure_connections_only_mode){ 3310 requested_security_level = LEVEL_4; 3311 } 3312 3313 // assess security: LEVEL 4 requires SC 3314 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3315 if ((requested_security_level == LEVEL_4) && 3316 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3317 !hci_remote_sc_enabled(conn)){ 3318 log_info("Level 4 required, but SC not supported -> abort"); 3319 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3320 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3321 return; 3322 } 3323 3324 // assess security based on io capabilities 3325 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3326 // responder: fully validate io caps of both sides as well as OOB data 3327 bool security_possible = false; 3328 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3329 3330 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3331 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3332 // so we merge the OOB data availability 3333 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3334 if (conn->classic_oob_c_192 != NULL){ 3335 have_oob_data |= 1; 3336 } 3337 if (conn->classic_oob_c_256 != NULL){ 3338 have_oob_data |= 2; 3339 } 3340 // for up to Level 3, either P-192 as well as P-256 will do 3341 // 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 3342 // if remote does not SC, we should not receive P-256 data either 3343 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3344 security_possible = true; 3345 } 3346 // for Level 4, P-256 is needed 3347 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3348 security_possible = true; 3349 } 3350 #endif 3351 3352 if (security_possible == false){ 3353 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3354 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3355 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3356 return; 3357 } 3358 } else { 3359 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3360 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3361 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3362 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3363 log_info("Level 3+ required, but no input/output -> abort"); 3364 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3365 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3366 return; 3367 } 3368 #endif 3369 #endif 3370 } 3371 3372 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3373 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3374 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3375 } else { 3376 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3377 } 3378 #endif 3379 } 3380 3381 #endif 3382 3383 static void event_handler(uint8_t *packet, uint16_t size){ 3384 3385 uint16_t event_length = packet[1]; 3386 3387 // assert packet is complete 3388 if (size != (event_length + 2u)){ 3389 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3390 return; 3391 } 3392 3393 hci_con_handle_t handle; 3394 hci_connection_t * conn; 3395 int i; 3396 3397 #ifdef ENABLE_CLASSIC 3398 hci_link_type_t link_type; 3399 bd_addr_t addr; 3400 bd_addr_type_t addr_type; 3401 #endif 3402 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3403 hci_iso_stream_t * iso_stream; 3404 le_audio_big_t * big; 3405 le_audio_big_sync_t * big_sync; 3406 #endif 3407 3408 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3409 3410 switch (hci_event_packet_get_type(packet)) { 3411 3412 case HCI_EVENT_COMMAND_COMPLETE: 3413 handle_command_complete_event(packet, size); 3414 break; 3415 3416 case HCI_EVENT_COMMAND_STATUS: 3417 handle_command_status_event(packet, size); 3418 break; 3419 3420 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3421 if (size < 3) return; 3422 uint16_t num_handles = packet[2]; 3423 if (size != (3u + num_handles * 4u)) return; 3424 #ifdef ENABLE_CLASSIC 3425 bool notify_sco = false; 3426 #endif 3427 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3428 bool notify_iso = false; 3429 #endif 3430 uint16_t offset = 3; 3431 for (i=0; i<num_handles;i++){ 3432 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3433 offset += 2u; 3434 uint16_t num_packets = little_endian_read_16(packet, offset); 3435 offset += 2u; 3436 3437 conn = hci_connection_for_handle(handle); 3438 if (conn != NULL) { 3439 3440 if (conn->num_packets_sent >= num_packets) { 3441 conn->num_packets_sent -= num_packets; 3442 } else { 3443 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3444 conn->num_packets_sent = 0; 3445 } 3446 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3447 #ifdef ENABLE_CLASSIC 3448 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3449 notify_sco = true; 3450 } 3451 #endif 3452 } 3453 3454 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3455 hci_controller_dump_packets(); 3456 #endif 3457 3458 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3459 if (conn == NULL){ 3460 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3461 if (iso_stream != NULL){ 3462 if (iso_stream->num_packets_sent >= num_packets) { 3463 iso_stream->num_packets_sent -= num_packets; 3464 } else { 3465 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3466 iso_stream->num_packets_sent = 0; 3467 } 3468 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3469 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3470 if (big != NULL){ 3471 big->num_completed_timestamp_current_valid = true; 3472 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3473 } 3474 } 3475 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3476 num_packets, handle, iso_stream->num_packets_sent); 3477 notify_iso = true; 3478 } 3479 } 3480 #endif 3481 } 3482 3483 #ifdef ENABLE_CLASSIC 3484 if (notify_sco){ 3485 hci_notify_if_sco_can_send_now(); 3486 } 3487 #endif 3488 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3489 if (notify_iso){ 3490 hci_iso_notify_can_send_now(); 3491 } 3492 #endif 3493 break; 3494 } 3495 3496 #ifdef ENABLE_CLASSIC 3497 case HCI_EVENT_FLUSH_OCCURRED: 3498 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3499 handle = hci_event_flush_occurred_get_handle(packet); 3500 conn = hci_connection_for_handle(handle); 3501 if (conn) { 3502 log_info("Flush occurred, disconnect 0x%04x", handle); 3503 conn->state = SEND_DISCONNECT; 3504 } 3505 break; 3506 3507 case HCI_EVENT_INQUIRY_COMPLETE: 3508 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3509 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3510 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3511 hci_emit_event(event, sizeof(event), 1); 3512 } 3513 break; 3514 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3515 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3516 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3517 } 3518 break; 3519 case HCI_EVENT_CONNECTION_REQUEST: 3520 reverse_bd_addr(&packet[2], addr); 3521 link_type = (hci_link_type_t) packet[11]; 3522 3523 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3524 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3525 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3526 bd_addr_copy(hci_stack->decline_addr, addr); 3527 break; 3528 } 3529 3530 if (hci_stack->gap_classic_accept_callback != NULL){ 3531 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3532 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3533 bd_addr_copy(hci_stack->decline_addr, addr); 3534 break; 3535 } 3536 } 3537 3538 // TODO: eval COD 8-10 3539 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3540 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3541 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3542 if (!conn) { 3543 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3544 } 3545 if (!conn) { 3546 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3547 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3548 bd_addr_copy(hci_stack->decline_addr, addr); 3549 hci_run(); 3550 // avoid event to higher layer 3551 return; 3552 } 3553 conn->state = RECEIVED_CONNECTION_REQUEST; 3554 // store info about eSCO 3555 if (link_type == HCI_LINK_TYPE_ESCO){ 3556 conn->remote_supported_features[0] |= 1; 3557 } 3558 hci_run(); 3559 break; 3560 3561 case HCI_EVENT_CONNECTION_COMPLETE: 3562 // Connection management 3563 reverse_bd_addr(&packet[5], addr); 3564 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3565 addr_type = BD_ADDR_TYPE_ACL; 3566 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3567 if (conn) { 3568 switch (conn->state){ 3569 // expected states 3570 case ACCEPTED_CONNECTION_REQUEST: 3571 case SENT_CREATE_CONNECTION: 3572 break; 3573 // unexpected state -> ignore 3574 default: 3575 // don't forward event to app 3576 return; 3577 } 3578 if (!packet[2]){ 3579 conn->state = OPEN; 3580 conn->con_handle = little_endian_read_16(packet, 3); 3581 3582 // trigger write supervision timeout if we're master 3583 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3584 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3585 } 3586 3587 // trigger write automatic flush timeout 3588 if (hci_stack->automatic_flush_timeout != 0){ 3589 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3590 } 3591 3592 // restart timer 3593 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3594 btstack_run_loop_add_timer(&conn->timeout); 3595 3596 // trigger remote features for dedicated bonding 3597 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3598 hci_trigger_remote_features_for_connection(conn); 3599 } 3600 3601 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3602 3603 hci_emit_nr_connections_changed(); 3604 } else { 3605 // connection failed 3606 hci_handle_connection_failed(conn, packet[2]); 3607 } 3608 } 3609 break; 3610 3611 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3612 reverse_bd_addr(&packet[5], addr); 3613 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3614 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3615 btstack_assert(conn != NULL); 3616 3617 if (packet[2] != ERROR_CODE_SUCCESS){ 3618 // connection failed, remove entry 3619 hci_handle_connection_failed(conn, packet[2]); 3620 break; 3621 } 3622 3623 conn->state = OPEN; 3624 conn->con_handle = little_endian_read_16(packet, 3); 3625 3626 #ifdef ENABLE_SCO_OVER_HCI 3627 // update SCO 3628 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3629 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3630 } 3631 // trigger can send now 3632 if (hci_have_usb_transport()){ 3633 hci_stack->sco_can_send_now = true; 3634 } 3635 #endif 3636 #ifdef HAVE_SCO_TRANSPORT 3637 // configure sco transport 3638 if (hci_stack->sco_transport != NULL){ 3639 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3640 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3641 } 3642 #endif 3643 break; 3644 3645 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3646 handle = little_endian_read_16(packet, 3); 3647 conn = hci_connection_for_handle(handle); 3648 if (!conn) break; 3649 if (!packet[2]){ 3650 const uint8_t * features = &packet[5]; 3651 hci_handle_remote_features_page_0(conn, features); 3652 3653 // read extended features if possible 3654 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3655 && ((conn->remote_supported_features[0] & 2) != 0)) { 3656 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3657 break; 3658 } 3659 } 3660 hci_handle_remote_features_received(conn); 3661 break; 3662 3663 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3664 handle = little_endian_read_16(packet, 3); 3665 conn = hci_connection_for_handle(handle); 3666 if (!conn) break; 3667 // status = ok, page = 1 3668 if (!packet[2]) { 3669 uint8_t page_number = packet[5]; 3670 uint8_t maximum_page_number = packet[6]; 3671 const uint8_t * features = &packet[7]; 3672 bool done = false; 3673 switch (page_number){ 3674 case 1: 3675 hci_handle_remote_features_page_1(conn, features); 3676 if (maximum_page_number >= 2){ 3677 // get Secure Connections (Controller) from Page 2 if available 3678 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3679 } else { 3680 // otherwise, assume SC (Controller) == SC (Host) 3681 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3682 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3683 } 3684 done = true; 3685 } 3686 break; 3687 case 2: 3688 hci_handle_remote_features_page_2(conn, features); 3689 done = true; 3690 break; 3691 default: 3692 break; 3693 } 3694 if (!done) break; 3695 } 3696 hci_handle_remote_features_received(conn); 3697 break; 3698 3699 case HCI_EVENT_LINK_KEY_REQUEST: 3700 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3701 hci_event_link_key_request_get_bd_addr(packet, addr); 3702 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3703 if (!conn) break; 3704 3705 // lookup link key in db if not cached 3706 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3707 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3708 } 3709 3710 // response sent by hci_run() 3711 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3712 #endif 3713 break; 3714 3715 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3716 hci_event_link_key_request_get_bd_addr(packet, addr); 3717 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3718 if (!conn) break; 3719 3720 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3721 3722 // CVE-2020-26555: ignore NULL link key 3723 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3724 if (btstack_is_null(&packet[8], 16)) break; 3725 3726 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3727 // Change Connection Encryption keeps link key type 3728 if (link_key_type != CHANGED_COMBINATION_KEY){ 3729 conn->link_key_type = link_key_type; 3730 } 3731 3732 // cache link key. link keys stored in little-endian format for legacy reasons 3733 memcpy(&conn->link_key, &packet[8], 16); 3734 3735 // only store link key: 3736 // - if bondable enabled 3737 if (hci_stack->bondable == false) break; 3738 // - if security level sufficient 3739 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3740 // - for SSP, also check if remote side requested bonding as well 3741 if (conn->link_key_type != COMBINATION_KEY){ 3742 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3743 if (!remote_bonding){ 3744 break; 3745 } 3746 } 3747 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3748 break; 3749 } 3750 3751 case HCI_EVENT_PIN_CODE_REQUEST: 3752 hci_event_pin_code_request_get_bd_addr(packet, addr); 3753 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3754 if (!conn) break; 3755 3756 hci_pairing_started(conn, false); 3757 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3758 if (!hci_stack->bondable ){ 3759 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3760 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3761 hci_run(); 3762 return; 3763 } 3764 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3765 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3766 log_info("Level 4 required, but SC not supported -> abort"); 3767 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3768 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3769 hci_run(); 3770 return; 3771 } 3772 break; 3773 3774 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3775 hci_event_io_capability_response_get_bd_addr(packet, addr); 3776 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3777 if (!conn) break; 3778 3779 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3780 hci_pairing_started(conn, true); 3781 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3782 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3783 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3784 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3785 #endif 3786 break; 3787 3788 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3789 hci_event_io_capability_response_get_bd_addr(packet, addr); 3790 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3791 if (!conn) break; 3792 3793 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3794 hci_connection_timestamp(conn); 3795 hci_pairing_started(conn, true); 3796 break; 3797 3798 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3799 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3800 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3801 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3802 if (!conn) break; 3803 3804 hci_connection_timestamp(conn); 3805 3806 hci_pairing_started(conn, true); 3807 3808 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3809 break; 3810 #endif 3811 3812 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3813 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3814 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3815 if (!conn) break; 3816 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3817 if (hci_stack->ssp_auto_accept){ 3818 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3819 }; 3820 } else { 3821 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3822 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3823 // don't forward event to app 3824 hci_run(); 3825 return; 3826 } 3827 break; 3828 3829 case HCI_EVENT_USER_PASSKEY_REQUEST: 3830 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3831 if (hci_stack->ssp_auto_accept){ 3832 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3833 }; 3834 break; 3835 3836 case HCI_EVENT_MODE_CHANGE: 3837 handle = hci_event_mode_change_get_handle(packet); 3838 conn = hci_connection_for_handle(handle); 3839 if (!conn) break; 3840 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3841 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3842 break; 3843 #endif 3844 3845 case HCI_EVENT_ENCRYPTION_CHANGE: 3846 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3847 handle = hci_event_encryption_change_get_connection_handle(packet); 3848 conn = hci_connection_for_handle(handle); 3849 if (!conn) break; 3850 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3851 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3852 if (encryption_enabled){ 3853 if (hci_is_le_connection(conn)){ 3854 // For LE, we accept connection as encrypted 3855 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3856 } 3857 #ifdef ENABLE_CLASSIC 3858 else { 3859 3860 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3861 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3862 bool connected_uses_aes_ccm = encryption_enabled == 2; 3863 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3864 log_info("SC during pairing, but only E0 now -> abort"); 3865 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3866 break; 3867 } 3868 3869 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3870 if (connected_uses_aes_ccm){ 3871 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3872 } 3873 3874 #ifdef ENABLE_TESTING_SUPPORT 3875 // work around for issue with PTS dongle 3876 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3877 #endif 3878 // validate encryption key size 3879 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3880 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3881 // already got encryption key size 3882 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3883 } else { 3884 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3885 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3886 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3887 } else { 3888 // if not, pretend everything is perfect 3889 hci_handle_read_encryption_key_size_complete(conn, 16); 3890 } 3891 } 3892 } 3893 #endif 3894 } else { 3895 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3896 } 3897 } else { 3898 uint8_t status = hci_event_encryption_change_get_status(packet); 3899 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3900 conn->bonding_flags &= ~BONDING_DEDICATED; 3901 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3902 conn->bonding_status = status; 3903 } 3904 } 3905 3906 break; 3907 3908 #ifdef ENABLE_CLASSIC 3909 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3910 handle = hci_event_authentication_complete_get_connection_handle(packet); 3911 conn = hci_connection_for_handle(handle); 3912 if (!conn) break; 3913 3914 // clear authentication active flag 3915 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3916 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3917 3918 // authenticated only if auth status == 0 3919 if (hci_event_authentication_complete_get_status(packet) == 0){ 3920 // authenticated 3921 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3922 3923 // If not already encrypted, start encryption 3924 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3925 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3926 break; 3927 } 3928 } 3929 3930 // emit updated security level (will be 0 if not authenticated) 3931 hci_handle_mutual_authentication_completed(conn); 3932 break; 3933 3934 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3935 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3936 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3937 if (!conn) break; 3938 3939 // treat successfully paired connection as authenticated 3940 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3941 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3942 } 3943 3944 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3945 break; 3946 #endif 3947 3948 // HCI_EVENT_DISCONNECTION_COMPLETE 3949 // has been split, to first notify stack before shutting connection down 3950 // see end of function, too. 3951 case HCI_EVENT_DISCONNECTION_COMPLETE: 3952 if (packet[2]) break; // status != 0 3953 handle = little_endian_read_16(packet, 3); 3954 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3955 if (hci_stack->acl_fragmentation_total_size > 0u) { 3956 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3957 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3958 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3959 hci_stack->acl_fragmentation_total_size = 0; 3960 hci_stack->acl_fragmentation_pos = 0; 3961 if (release_buffer){ 3962 hci_release_packet_buffer(); 3963 } 3964 } 3965 } 3966 3967 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3968 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3969 if (hci_stack->iso_fragmentation_total_size > 0u) { 3970 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3971 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3972 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3973 hci_stack->iso_fragmentation_total_size = 0; 3974 hci_stack->iso_fragmentation_pos = 0; 3975 if (release_buffer){ 3976 hci_release_packet_buffer(); 3977 } 3978 } 3979 } 3980 3981 // finalize iso stream for CIS handle 3982 iso_stream = hci_iso_stream_for_con_handle(handle); 3983 if (iso_stream != NULL){ 3984 hci_iso_stream_finalize(iso_stream); 3985 break; 3986 } 3987 3988 // finalize iso stream(s) for ACL handle 3989 btstack_linked_list_iterator_t it; 3990 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3991 while (btstack_linked_list_iterator_has_next(&it)){ 3992 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3993 if (iso_stream->acl_handle == handle ) { 3994 hci_iso_stream_finalize(iso_stream); 3995 } 3996 } 3997 #endif 3998 3999 conn = hci_connection_for_handle(handle); 4000 if (!conn) break; 4001 #ifdef ENABLE_CLASSIC 4002 // pairing failed if it was ongoing 4003 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4004 #endif 4005 4006 // emit dedicatd bonding event 4007 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4008 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4009 } 4010 4011 // mark connection for shutdown, stop timers, reset state 4012 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4013 hci_connection_stop_timer(conn); 4014 hci_connection_init(conn); 4015 4016 #ifdef ENABLE_BLE 4017 #ifdef ENABLE_LE_PERIPHERAL 4018 // re-enable advertisements for le connections if active 4019 if (hci_is_le_connection(conn)){ 4020 hci_update_advertisements_enabled_for_current_roles(); 4021 } 4022 #endif 4023 #endif 4024 break; 4025 4026 case HCI_EVENT_HARDWARE_ERROR: 4027 log_error("Hardware Error: 0x%02x", packet[2]); 4028 if (hci_stack->hardware_error_callback){ 4029 (*hci_stack->hardware_error_callback)(packet[2]); 4030 } else { 4031 // if no special requests, just reboot stack 4032 hci_power_control_off(); 4033 hci_power_control_on(); 4034 } 4035 break; 4036 4037 #ifdef ENABLE_CLASSIC 4038 case HCI_EVENT_ROLE_CHANGE: 4039 if (packet[2]) break; // status != 0 4040 reverse_bd_addr(&packet[3], addr); 4041 addr_type = BD_ADDR_TYPE_ACL; 4042 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4043 if (!conn) break; 4044 conn->role = (hci_role_t) packet[9]; 4045 break; 4046 #endif 4047 4048 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4049 // release packet buffer only for asynchronous transport and if there are not further fragments 4050 if (hci_transport_synchronous()) { 4051 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4052 return; // instead of break: to avoid re-entering hci_run() 4053 } 4054 hci_stack->acl_fragmentation_tx_active = 0; 4055 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4056 hci_stack->iso_fragmentation_tx_active = 0; 4057 if (hci_stack->iso_fragmentation_total_size) break; 4058 #endif 4059 if (hci_stack->acl_fragmentation_total_size) break; 4060 hci_release_packet_buffer(); 4061 4062 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4063 hci_iso_notify_can_send_now(); 4064 #endif 4065 // L2CAP receives this event via the hci_emit_event below 4066 4067 #ifdef ENABLE_CLASSIC 4068 // For SCO, we do the can_send_now_check here 4069 hci_notify_if_sco_can_send_now(); 4070 #endif 4071 break; 4072 4073 #ifdef ENABLE_CLASSIC 4074 case HCI_EVENT_SCO_CAN_SEND_NOW: 4075 // For SCO, we do the can_send_now_check here 4076 hci_stack->sco_can_send_now = true; 4077 hci_notify_if_sco_can_send_now(); 4078 return; 4079 4080 // explode inquriy results for easier consumption 4081 case HCI_EVENT_INQUIRY_RESULT: 4082 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4083 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4084 gap_inquiry_explode(packet, size); 4085 break; 4086 #endif 4087 4088 #ifdef ENABLE_BLE 4089 case HCI_EVENT_LE_META: 4090 switch (packet[2]){ 4091 #ifdef ENABLE_LE_CENTRAL 4092 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4093 if (!hci_stack->le_scanning_enabled) break; 4094 le_handle_advertisement_report(packet, size); 4095 break; 4096 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4097 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4098 if (!hci_stack->le_scanning_enabled) break; 4099 le_handle_extended_advertisement_report(packet, size); 4100 break; 4101 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4102 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4103 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4104 break; 4105 #endif 4106 #endif 4107 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4108 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4109 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4110 event_handle_le_connection_complete(packet); 4111 break; 4112 4113 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4114 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4115 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4116 conn = hci_connection_for_handle(handle); 4117 if (!conn) break; 4118 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4119 break; 4120 4121 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4122 // connection 4123 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4124 conn = hci_connection_for_handle(handle); 4125 if (conn) { 4126 // read arguments 4127 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4128 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4129 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4130 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4131 4132 // validate against current connection parameter range 4133 le_connection_parameter_range_t existing_range; 4134 gap_get_connection_parameter_range(&existing_range); 4135 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4136 if (update_parameter){ 4137 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4138 conn->le_conn_interval_min = le_conn_interval_min; 4139 conn->le_conn_interval_max = le_conn_interval_max; 4140 conn->le_conn_latency = le_conn_latency; 4141 conn->le_supervision_timeout = le_supervision_timeout; 4142 } else { 4143 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4144 } 4145 } 4146 break; 4147 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4148 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4149 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4150 conn = hci_connection_for_handle(handle); 4151 if (conn) { 4152 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4153 } 4154 break; 4155 #endif 4156 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4157 case HCI_SUBEVENT_LE_CIS_REQUEST: 4158 // incoming CIS request, allocate iso stream object and cache metadata 4159 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4160 hci_subevent_le_cis_request_get_cig_id(packet), 4161 hci_subevent_le_cis_request_get_cis_id(packet)); 4162 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4163 if (iso_stream != NULL){ 4164 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4165 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4166 } 4167 break; 4168 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4169 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4170 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4171 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4172 iso_stream = hci_iso_stream_for_con_handle(handle); 4173 btstack_assert(iso_stream != NULL); 4174 // track SDU 4175 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4176 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4177 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4178 // CIS Accept by Peripheral 4179 if (status == ERROR_CODE_SUCCESS){ 4180 if (iso_stream->max_sdu_p_to_c > 0){ 4181 // we're peripheral and we will send data 4182 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4183 } else { 4184 // we're peripheral and we will only receive data 4185 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4186 } 4187 } else { 4188 hci_cis_handle_created(iso_stream, status); 4189 } 4190 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4191 } else { 4192 // CIG Setup by Central 4193 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4194 btstack_assert(cig != NULL); 4195 // update iso stream state 4196 if (status == ERROR_CODE_SUCCESS){ 4197 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4198 } else { 4199 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4200 } 4201 // update cig state 4202 uint8_t i; 4203 for (i=0;i<cig->num_cis;i++){ 4204 if (cig->cis_con_handles[i] == handle){ 4205 cig->cis_setup_active[i] = false; 4206 if (status == ERROR_CODE_SUCCESS){ 4207 cig->cis_established[i] = true; 4208 } else { 4209 hci_cis_handle_created(iso_stream, status); 4210 } 4211 } 4212 } 4213 4214 // trigger iso path setup if complete 4215 bool cis_setup_active = false; 4216 for (i=0;i<cig->num_cis;i++){ 4217 cis_setup_active |= cig->cis_setup_active[i]; 4218 } 4219 if (cis_setup_active == false){ 4220 cig->state_vars.next_cis = 0; 4221 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4222 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4223 } 4224 } 4225 } 4226 break; 4227 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4228 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4229 big = hci_big_for_handle(packet[4]); 4230 if (big != NULL){ 4231 uint8_t status = packet[3]; 4232 if (status == ERROR_CODE_SUCCESS){ 4233 // store bis_con_handles and trigger iso path setup 4234 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4235 uint8_t i; 4236 for (i=0;i<num_bis;i++){ 4237 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4238 big->bis_con_handles[i] = bis_handle; 4239 // assign bis handle 4240 btstack_linked_list_iterator_t it; 4241 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4242 while (btstack_linked_list_iterator_has_next(&it)){ 4243 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4244 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4245 (iso_stream->group_id == big->big_handle)){ 4246 iso_stream->cis_handle = bis_handle; 4247 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4248 break; 4249 } 4250 } 4251 } 4252 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4253 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4254 big->state_vars.next_bis = 0; 4255 } 4256 } else { 4257 // create BIG failed or has been stopped by us 4258 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4259 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4260 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4261 hci_emit_big_created(big, status); 4262 } else { 4263 hci_emit_big_terminated(big); 4264 } 4265 } 4266 } 4267 break; 4268 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4269 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4270 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4271 if (big != NULL){ 4272 // finalize associated ISO streams 4273 btstack_linked_list_iterator_t it; 4274 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4275 while (btstack_linked_list_iterator_has_next(&it)){ 4276 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4277 if (iso_stream->group_id == big->big_handle){ 4278 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4279 btstack_linked_list_iterator_remove(&it); 4280 btstack_memory_hci_iso_stream_free(iso_stream); 4281 } 4282 } 4283 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4284 switch (big->state){ 4285 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4286 hci_emit_big_created(big, big->state_vars.status); 4287 break; 4288 default: 4289 hci_emit_big_terminated(big); 4290 break; 4291 } 4292 } 4293 break; 4294 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4295 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4296 big_sync = hci_big_sync_for_handle(packet[4]); 4297 if (big_sync != NULL){ 4298 uint8_t status = packet[3]; 4299 uint8_t big_handle = packet[4]; 4300 if (status == ERROR_CODE_SUCCESS){ 4301 // store bis_con_handles and trigger iso path setup 4302 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4303 uint8_t i; 4304 for (i=0;i<num_bis;i++){ 4305 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4306 } 4307 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4308 // trigger iso path setup 4309 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4310 big_sync->state_vars.next_bis = 0; 4311 } 4312 } else { 4313 // create BIG Sync failed or has been stopped by us 4314 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4315 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4316 hci_emit_big_sync_created(big_sync, status); 4317 } else { 4318 hci_emit_big_sync_stopped(big_handle); 4319 } 4320 } 4321 } 4322 break; 4323 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4324 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4325 big_sync = hci_big_sync_for_handle(packet[4]); 4326 if (big_sync != NULL){ 4327 uint8_t big_handle = packet[4]; 4328 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4329 hci_emit_big_sync_stopped(big_handle); 4330 } 4331 break; 4332 #endif 4333 default: 4334 break; 4335 } 4336 break; 4337 #endif 4338 case HCI_EVENT_VENDOR_SPECIFIC: 4339 // Vendor specific commands often create vendor specific event instead of num completed packets 4340 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4341 switch (hci_stack->manufacturer){ 4342 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4343 hci_stack->num_cmd_packets = 1; 4344 break; 4345 default: 4346 break; 4347 } 4348 break; 4349 default: 4350 break; 4351 } 4352 4353 handle_event_for_current_stack_state(packet, size); 4354 4355 // notify upper stack 4356 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4357 4358 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4359 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4360 handle = little_endian_read_16(packet, 3); 4361 hci_connection_t * aConn = hci_connection_for_handle(handle); 4362 // discard connection if app did not trigger a reconnect in the event handler 4363 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4364 hci_shutdown_connection(aConn); 4365 } 4366 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4367 hci_controller_dump_packets(); 4368 #endif 4369 } 4370 4371 // execute main loop 4372 hci_run(); 4373 } 4374 4375 #ifdef ENABLE_CLASSIC 4376 4377 #ifdef ENABLE_SCO_OVER_HCI 4378 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4379 static void sco_schedule_tx(hci_connection_t * conn); 4380 4381 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4382 log_debug("SCO TX Timeout"); 4383 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4384 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4385 if (!conn) return; 4386 4387 // trigger send 4388 conn->sco_tx_ready = 1; 4389 // extra packet if CVSD but SCO buffer is too short 4390 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4391 conn->sco_tx_ready++; 4392 } 4393 hci_notify_if_sco_can_send_now(); 4394 } 4395 4396 4397 #define SCO_TX_AFTER_RX_MS (6) 4398 4399 static void sco_schedule_tx(hci_connection_t * conn){ 4400 4401 uint32_t now = btstack_run_loop_get_time_ms(); 4402 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4403 int time_delta_ms = sco_tx_ms - now; 4404 4405 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4406 4407 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4408 btstack_run_loop_remove_timer(timer); 4409 btstack_run_loop_set_timer(timer, time_delta_ms); 4410 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4411 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4412 btstack_run_loop_add_timer(timer); 4413 } 4414 #endif 4415 4416 static void sco_handler(uint8_t * packet, uint16_t size){ 4417 // lookup connection struct 4418 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4419 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4420 if (!conn) return; 4421 4422 #ifdef ENABLE_SCO_OVER_HCI 4423 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4424 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4425 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4426 packet[2] = 0x3c; 4427 memmove(&packet[3], &packet[23], 63); 4428 size = 63; 4429 } 4430 } 4431 4432 if (hci_have_usb_transport()){ 4433 // Nothing to do 4434 } else { 4435 // 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); 4436 if (hci_stack->synchronous_flow_control_enabled == 0){ 4437 uint32_t now = btstack_run_loop_get_time_ms(); 4438 4439 if (!conn->sco_rx_valid){ 4440 // ignore first 10 packets 4441 conn->sco_rx_count++; 4442 // log_debug("sco rx count %u", conn->sco_rx_count); 4443 if (conn->sco_rx_count == 10) { 4444 // use first timestamp as is and pretent it just started 4445 conn->sco_rx_ms = now; 4446 conn->sco_rx_valid = 1; 4447 conn->sco_rx_count = 0; 4448 sco_schedule_tx(conn); 4449 } 4450 } else { 4451 // track expected arrival timme 4452 conn->sco_rx_count++; 4453 conn->sco_rx_ms += 7; 4454 int delta = (int32_t) (now - conn->sco_rx_ms); 4455 if (delta > 0){ 4456 conn->sco_rx_ms++; 4457 } 4458 // log_debug("sco rx %u", conn->sco_rx_ms); 4459 sco_schedule_tx(conn); 4460 } 4461 } 4462 } 4463 #endif 4464 4465 // deliver to app 4466 if (hci_stack->sco_packet_handler) { 4467 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4468 } 4469 4470 #ifdef HAVE_SCO_TRANSPORT 4471 // We can send one packet for each received packet 4472 conn->sco_tx_ready++; 4473 hci_notify_if_sco_can_send_now(); 4474 #endif 4475 4476 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4477 conn->num_packets_completed++; 4478 hci_stack->host_completed_packets = 1; 4479 hci_run(); 4480 #endif 4481 } 4482 #endif 4483 4484 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4485 hci_dump_packet(packet_type, 1, packet, size); 4486 switch (packet_type) { 4487 case HCI_EVENT_PACKET: 4488 event_handler(packet, size); 4489 break; 4490 case HCI_ACL_DATA_PACKET: 4491 acl_handler(packet, size); 4492 break; 4493 #ifdef ENABLE_CLASSIC 4494 case HCI_SCO_DATA_PACKET: 4495 sco_handler(packet, size); 4496 break; 4497 #endif 4498 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4499 case HCI_ISO_DATA_PACKET: 4500 hci_iso_packet_handler(packet, size); 4501 break; 4502 #endif 4503 default: 4504 break; 4505 } 4506 } 4507 4508 /** 4509 * @brief Add event packet handler. 4510 */ 4511 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4512 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4513 } 4514 4515 /** 4516 * @brief Remove event packet handler. 4517 */ 4518 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4519 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4520 } 4521 4522 /** Register HCI packet handlers */ 4523 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4524 hci_stack->acl_packet_handler = handler; 4525 } 4526 4527 #ifdef ENABLE_CLASSIC 4528 /** 4529 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4530 */ 4531 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4532 hci_stack->sco_packet_handler = handler; 4533 } 4534 #endif 4535 4536 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4537 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4538 hci_stack->iso_packet_handler = handler; 4539 } 4540 #endif 4541 4542 static void hci_state_reset(void){ 4543 // no connections yet 4544 hci_stack->connections = NULL; 4545 4546 // keep discoverable/connectable as this has been requested by the client(s) 4547 // hci_stack->discoverable = 0; 4548 // hci_stack->connectable = 0; 4549 // hci_stack->bondable = 1; 4550 // hci_stack->own_addr_type = 0; 4551 4552 // buffer is free 4553 hci_stack->hci_packet_buffer_reserved = false; 4554 4555 // no pending cmds 4556 hci_stack->decline_reason = 0; 4557 4558 hci_stack->secure_connections_active = false; 4559 4560 #ifdef ENABLE_CLASSIC 4561 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4562 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4563 4564 hci_stack->gap_tasks_classic = 4565 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4566 GAP_TASK_SET_CLASS_OF_DEVICE | 4567 GAP_TASK_SET_LOCAL_NAME | 4568 GAP_TASK_SET_EIR_DATA | 4569 GAP_TASK_WRITE_SCAN_ENABLE | 4570 GAP_TASK_WRITE_PAGE_TIMEOUT; 4571 #endif 4572 4573 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4574 hci_stack->classic_read_local_oob_data = false; 4575 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4576 #endif 4577 4578 // LE 4579 #ifdef ENABLE_BLE 4580 memset(hci_stack->le_random_address, 0, 6); 4581 hci_stack->le_random_address_set = 0; 4582 #endif 4583 #ifdef ENABLE_LE_CENTRAL 4584 hci_stack->le_scanning_active = false; 4585 hci_stack->le_scanning_param_update = true; 4586 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4587 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4588 hci_stack->le_whitelist_capacity = 0; 4589 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4590 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4591 #endif 4592 #endif 4593 #ifdef ENABLE_LE_PERIPHERAL 4594 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4595 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4596 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4597 } 4598 if (hci_stack->le_advertisements_data != NULL){ 4599 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4600 } 4601 #endif 4602 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4603 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4604 #endif 4605 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4606 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4607 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4608 #endif 4609 } 4610 4611 #ifdef ENABLE_CLASSIC 4612 /** 4613 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4614 */ 4615 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4616 // store and open remote device db 4617 hci_stack->link_key_db = link_key_db; 4618 if (hci_stack->link_key_db) { 4619 hci_stack->link_key_db->open(); 4620 } 4621 } 4622 #endif 4623 4624 void hci_init(const hci_transport_t *transport, const void *config){ 4625 4626 #ifdef HAVE_MALLOC 4627 if (!hci_stack) { 4628 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4629 } 4630 #else 4631 hci_stack = &hci_stack_static; 4632 #endif 4633 memset(hci_stack, 0, sizeof(hci_stack_t)); 4634 4635 // reference to use transport layer implementation 4636 hci_stack->hci_transport = transport; 4637 4638 // reference to used config 4639 hci_stack->config = config; 4640 4641 // setup pointer for outgoing packet buffer 4642 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4643 4644 // max acl payload size defined in config.h 4645 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4646 4647 // register packet handlers with transport 4648 transport->register_packet_handler(&packet_handler); 4649 4650 hci_stack->state = HCI_STATE_OFF; 4651 4652 // class of device 4653 hci_stack->class_of_device = 0x007a020c; // Smartphone 4654 4655 // bondable by default 4656 hci_stack->bondable = 1; 4657 4658 #ifdef ENABLE_CLASSIC 4659 // classic name 4660 hci_stack->local_name = default_classic_name; 4661 4662 // Master slave policy 4663 hci_stack->master_slave_policy = 1; 4664 4665 // Allow Role Switch 4666 hci_stack->allow_role_switch = 1; 4667 4668 // Default / minimum security level = 2 4669 hci_stack->gap_security_level = LEVEL_2; 4670 4671 // Default Security Mode 4 4672 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4673 4674 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4675 hci_stack->gap_required_encyrption_key_size = 7; 4676 4677 // Link Supervision Timeout 4678 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4679 4680 #endif 4681 4682 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4683 hci_stack->ssp_enable = 1; 4684 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4685 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4686 hci_stack->ssp_auto_accept = 1; 4687 4688 // Secure Connections: enable (requires support from Controller) 4689 hci_stack->secure_connections_enable = true; 4690 4691 // voice setting - signed 16 bit pcm data with CVSD over the air 4692 hci_stack->sco_voice_setting = 0x60; 4693 4694 #ifdef ENABLE_BLE 4695 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4696 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4697 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4698 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4699 hci_stack->le_connection_latency = 4; // 4 4700 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4701 hci_stack->le_minimum_ce_length = 0; // 0 ms 4702 hci_stack->le_maximum_ce_length = 0; // 0 ms 4703 #endif 4704 4705 #ifdef ENABLE_LE_CENTRAL 4706 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4707 4708 // default LE Scanning 4709 hci_stack->le_scan_type = 0x01; // active 4710 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4711 hci_stack->le_scan_window = 0x30; // 30 ms 4712 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4713 #endif 4714 4715 #ifdef ENABLE_LE_PERIPHERAL 4716 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4717 4718 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4719 hci_stack->le_advertisements_interval_min = 0x0800; 4720 hci_stack->le_advertisements_interval_max = 0x0800; 4721 hci_stack->le_advertisements_type = 0; 4722 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4723 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4724 hci_stack->le_advertisements_channel_map = 0x07; 4725 hci_stack->le_advertisements_filter_policy = 0; 4726 #endif 4727 4728 // connection parameter range used to answer connection parameter update requests in l2cap 4729 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4730 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4731 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4732 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4733 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4734 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4735 4736 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4737 hci_stack->iso_packets_to_queue = 1; 4738 #endif 4739 4740 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4741 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4742 #endif 4743 4744 hci_state_reset(); 4745 } 4746 4747 void hci_deinit(void){ 4748 btstack_run_loop_remove_timer(&hci_stack->timeout); 4749 #ifdef HAVE_MALLOC 4750 if (hci_stack) { 4751 free(hci_stack); 4752 } 4753 #endif 4754 hci_stack = NULL; 4755 4756 #ifdef ENABLE_CLASSIC 4757 disable_l2cap_timeouts = 0; 4758 #endif 4759 } 4760 4761 /** 4762 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4763 */ 4764 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4765 hci_stack->chipset = chipset_driver; 4766 4767 // reset chipset driver - init is also called on power_up 4768 if (hci_stack->chipset && hci_stack->chipset->init){ 4769 hci_stack->chipset->init(hci_stack->config); 4770 } 4771 } 4772 4773 void hci_enable_custom_pre_init(void){ 4774 hci_stack->chipset_pre_init = true; 4775 } 4776 4777 /** 4778 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4779 */ 4780 void hci_set_control(const btstack_control_t *hardware_control){ 4781 // references to used control implementation 4782 hci_stack->control = hardware_control; 4783 // init with transport config 4784 hardware_control->init(hci_stack->config); 4785 } 4786 4787 static void hci_discard_connections(void){ 4788 btstack_linked_list_iterator_t it; 4789 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4790 while (btstack_linked_list_iterator_has_next(&it)){ 4791 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4792 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4793 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4794 hci_shutdown_connection(connection); 4795 } 4796 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4797 while (hci_stack->iso_streams != NULL){ 4798 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4799 } 4800 #endif 4801 } 4802 4803 void hci_close(void){ 4804 4805 #ifdef ENABLE_CLASSIC 4806 // close remote device db 4807 if (hci_stack->link_key_db) { 4808 hci_stack->link_key_db->close(); 4809 } 4810 #endif 4811 4812 hci_discard_connections(); 4813 4814 hci_power_control(HCI_POWER_OFF); 4815 4816 #ifdef HAVE_MALLOC 4817 free(hci_stack); 4818 #endif 4819 hci_stack = NULL; 4820 } 4821 4822 #ifdef HAVE_SCO_TRANSPORT 4823 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4824 hci_stack->sco_transport = sco_transport; 4825 sco_transport->register_packet_handler(&packet_handler); 4826 } 4827 #endif 4828 4829 #ifdef ENABLE_CLASSIC 4830 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4831 // validate ranage and set 4832 if (encryption_key_size < 7) return; 4833 if (encryption_key_size > 16) return; 4834 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4835 } 4836 4837 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4838 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4839 hci_stack->gap_security_mode = security_mode; 4840 return ERROR_CODE_SUCCESS; 4841 } else { 4842 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4843 } 4844 } 4845 4846 gap_security_mode_t gap_get_security_mode(void){ 4847 return hci_stack->gap_security_mode; 4848 } 4849 4850 void gap_set_security_level(gap_security_level_t security_level){ 4851 hci_stack->gap_security_level = security_level; 4852 } 4853 4854 gap_security_level_t gap_get_security_level(void){ 4855 if (hci_stack->gap_secure_connections_only_mode){ 4856 return LEVEL_4; 4857 } 4858 return hci_stack->gap_security_level; 4859 } 4860 4861 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4862 hci_stack->gap_minimal_service_security_level = security_level; 4863 } 4864 4865 void gap_set_secure_connections_only_mode(bool enable){ 4866 hci_stack->gap_secure_connections_only_mode = enable; 4867 } 4868 4869 bool gap_get_secure_connections_only_mode(void){ 4870 return hci_stack->gap_secure_connections_only_mode; 4871 } 4872 #endif 4873 4874 #ifdef ENABLE_CLASSIC 4875 void gap_set_class_of_device(uint32_t class_of_device){ 4876 hci_stack->class_of_device = class_of_device; 4877 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4878 hci_run(); 4879 } 4880 4881 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4882 hci_stack->default_link_policy_settings = default_link_policy_settings; 4883 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4884 hci_run(); 4885 } 4886 4887 void gap_set_allow_role_switch(bool allow_role_switch){ 4888 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4889 } 4890 4891 uint8_t hci_get_allow_role_switch(void){ 4892 return hci_stack->allow_role_switch; 4893 } 4894 4895 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4896 hci_stack->link_supervision_timeout = link_supervision_timeout; 4897 } 4898 4899 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4900 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4901 } 4902 4903 uint16_t hci_automatic_flush_timeout(void){ 4904 return hci_stack->automatic_flush_timeout; 4905 } 4906 4907 void hci_disable_l2cap_timeout_check(void){ 4908 disable_l2cap_timeouts = 1; 4909 } 4910 #endif 4911 4912 #ifndef HAVE_HOST_CONTROLLER_API 4913 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4914 void hci_set_bd_addr(bd_addr_t addr){ 4915 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4916 hci_stack->custom_bd_addr_set = 1; 4917 } 4918 #endif 4919 4920 // State-Module-Driver overview 4921 // state module low-level 4922 // HCI_STATE_OFF off close 4923 // HCI_STATE_INITIALIZING, on open 4924 // HCI_STATE_WORKING, on open 4925 // HCI_STATE_HALTING, on open 4926 // HCI_STATE_SLEEPING, off/sleep close 4927 // HCI_STATE_FALLING_ASLEEP on open 4928 4929 static int hci_power_control_on(void){ 4930 4931 // power on 4932 int err = 0; 4933 if (hci_stack->control && hci_stack->control->on){ 4934 err = (*hci_stack->control->on)(); 4935 } 4936 if (err){ 4937 log_error( "POWER_ON failed"); 4938 hci_emit_hci_open_failed(); 4939 return err; 4940 } 4941 4942 // int chipset driver 4943 if (hci_stack->chipset && hci_stack->chipset->init){ 4944 hci_stack->chipset->init(hci_stack->config); 4945 } 4946 4947 // init transport 4948 if (hci_stack->hci_transport->init){ 4949 hci_stack->hci_transport->init(hci_stack->config); 4950 } 4951 4952 // open transport 4953 err = hci_stack->hci_transport->open(); 4954 if (err){ 4955 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4956 if (hci_stack->control && hci_stack->control->off){ 4957 (*hci_stack->control->off)(); 4958 } 4959 hci_emit_hci_open_failed(); 4960 return err; 4961 } 4962 return 0; 4963 } 4964 4965 static void hci_power_control_off(void){ 4966 4967 log_info("hci_power_control_off"); 4968 4969 // close low-level device 4970 hci_stack->hci_transport->close(); 4971 4972 log_info("hci_power_control_off - hci_transport closed"); 4973 4974 // power off 4975 if (hci_stack->control && hci_stack->control->off){ 4976 (*hci_stack->control->off)(); 4977 } 4978 4979 log_info("hci_power_control_off - control closed"); 4980 4981 hci_stack->state = HCI_STATE_OFF; 4982 } 4983 4984 static void hci_power_control_sleep(void){ 4985 4986 log_info("hci_power_control_sleep"); 4987 4988 #if 0 4989 // don't close serial port during sleep 4990 4991 // close low-level device 4992 hci_stack->hci_transport->close(hci_stack->config); 4993 #endif 4994 4995 // sleep mode 4996 if (hci_stack->control && hci_stack->control->sleep){ 4997 (*hci_stack->control->sleep)(); 4998 } 4999 5000 hci_stack->state = HCI_STATE_SLEEPING; 5001 } 5002 5003 static int hci_power_control_wake(void){ 5004 5005 log_info("hci_power_control_wake"); 5006 5007 // wake on 5008 if (hci_stack->control && hci_stack->control->wake){ 5009 (*hci_stack->control->wake)(); 5010 } 5011 5012 #if 0 5013 // open low-level device 5014 int err = hci_stack->hci_transport->open(hci_stack->config); 5015 if (err){ 5016 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5017 if (hci_stack->control && hci_stack->control->off){ 5018 (*hci_stack->control->off)(); 5019 } 5020 hci_emit_hci_open_failed(); 5021 return err; 5022 } 5023 #endif 5024 5025 return 0; 5026 } 5027 5028 static void hci_power_enter_initializing_state(void){ 5029 // set up state machine 5030 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5031 hci_stack->hci_packet_buffer_reserved = false; 5032 hci_stack->state = HCI_STATE_INITIALIZING; 5033 5034 #ifndef HAVE_HOST_CONTROLLER_API 5035 if (hci_stack->chipset_pre_init) { 5036 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5037 } else 5038 #endif 5039 { 5040 hci_stack->substate = HCI_INIT_SEND_RESET; 5041 } 5042 } 5043 5044 static void hci_power_enter_halting_state(void){ 5045 #ifdef ENABLE_BLE 5046 // drop entries scheduled for removal, mark others for re-adding 5047 btstack_linked_list_iterator_t it; 5048 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5049 while (btstack_linked_list_iterator_has_next(&it)){ 5050 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5051 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5052 btstack_linked_list_iterator_remove(&it); 5053 btstack_memory_whitelist_entry_free(entry); 5054 } else { 5055 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5056 } 5057 } 5058 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5059 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5060 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5061 while (btstack_linked_list_iterator_has_next(&it)){ 5062 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5063 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5064 btstack_linked_list_iterator_remove(&it); 5065 btstack_memory_periodic_advertiser_list_entry_free(entry); 5066 } else { 5067 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5068 continue; 5069 } 5070 } 5071 #endif 5072 #endif 5073 // see hci_run 5074 hci_stack->state = HCI_STATE_HALTING; 5075 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5076 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5077 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5078 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5079 btstack_run_loop_add_timer(&hci_stack->timeout); 5080 } 5081 5082 // returns error 5083 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5084 int err; 5085 switch (power_mode){ 5086 case HCI_POWER_ON: 5087 err = hci_power_control_on(); 5088 if (err != 0) { 5089 log_error("hci_power_control_on() error %d", err); 5090 return err; 5091 } 5092 hci_power_enter_initializing_state(); 5093 break; 5094 case HCI_POWER_OFF: 5095 // do nothing 5096 break; 5097 case HCI_POWER_SLEEP: 5098 // do nothing (with SLEEP == OFF) 5099 break; 5100 default: 5101 btstack_assert(false); 5102 break; 5103 } 5104 return ERROR_CODE_SUCCESS; 5105 } 5106 5107 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5108 switch (power_mode){ 5109 case HCI_POWER_ON: 5110 // do nothing 5111 break; 5112 case HCI_POWER_OFF: 5113 // no connections yet, just turn it off 5114 hci_power_control_off(); 5115 break; 5116 case HCI_POWER_SLEEP: 5117 // no connections yet, just turn it off 5118 hci_power_control_sleep(); 5119 break; 5120 default: 5121 btstack_assert(false); 5122 break; 5123 } 5124 return ERROR_CODE_SUCCESS; 5125 } 5126 5127 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5128 switch (power_mode){ 5129 case HCI_POWER_ON: 5130 // do nothing 5131 break; 5132 case HCI_POWER_OFF: 5133 hci_power_enter_halting_state(); 5134 break; 5135 case HCI_POWER_SLEEP: 5136 // see hci_run 5137 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5138 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5139 break; 5140 default: 5141 btstack_assert(false); 5142 break; 5143 } 5144 return ERROR_CODE_SUCCESS; 5145 } 5146 5147 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5148 switch (power_mode){ 5149 case HCI_POWER_ON: 5150 hci_power_enter_initializing_state(); 5151 break; 5152 case HCI_POWER_OFF: 5153 // do nothing 5154 break; 5155 case HCI_POWER_SLEEP: 5156 // see hci_run 5157 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5158 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5159 break; 5160 default: 5161 btstack_assert(false); 5162 break; 5163 } 5164 return ERROR_CODE_SUCCESS; 5165 } 5166 5167 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5168 switch (power_mode){ 5169 case HCI_POWER_ON: 5170 hci_power_enter_initializing_state(); 5171 break; 5172 case HCI_POWER_OFF: 5173 hci_power_enter_halting_state(); 5174 break; 5175 case HCI_POWER_SLEEP: 5176 // do nothing 5177 break; 5178 default: 5179 btstack_assert(false); 5180 break; 5181 } 5182 return ERROR_CODE_SUCCESS; 5183 } 5184 5185 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5186 int err; 5187 switch (power_mode){ 5188 case HCI_POWER_ON: 5189 err = hci_power_control_wake(); 5190 if (err) return err; 5191 hci_power_enter_initializing_state(); 5192 break; 5193 case HCI_POWER_OFF: 5194 hci_power_enter_halting_state(); 5195 break; 5196 case HCI_POWER_SLEEP: 5197 // do nothing 5198 break; 5199 default: 5200 btstack_assert(false); 5201 break; 5202 } 5203 return ERROR_CODE_SUCCESS; 5204 } 5205 5206 int hci_power_control(HCI_POWER_MODE power_mode){ 5207 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5208 btstack_run_loop_remove_timer(&hci_stack->timeout); 5209 int err = 0; 5210 switch (hci_stack->state){ 5211 case HCI_STATE_OFF: 5212 err = hci_power_control_state_off(power_mode); 5213 break; 5214 case HCI_STATE_INITIALIZING: 5215 err = hci_power_control_state_initializing(power_mode); 5216 break; 5217 case HCI_STATE_WORKING: 5218 err = hci_power_control_state_working(power_mode); 5219 break; 5220 case HCI_STATE_HALTING: 5221 err = hci_power_control_state_halting(power_mode); 5222 break; 5223 case HCI_STATE_FALLING_ASLEEP: 5224 err = hci_power_control_state_falling_asleep(power_mode); 5225 break; 5226 case HCI_STATE_SLEEPING: 5227 err = hci_power_control_state_sleeping(power_mode); 5228 break; 5229 default: 5230 btstack_assert(false); 5231 break; 5232 } 5233 if (err != 0){ 5234 return err; 5235 } 5236 5237 // create internal event 5238 hci_emit_state(); 5239 5240 // trigger next/first action 5241 hci_run(); 5242 5243 return 0; 5244 } 5245 5246 5247 static void hci_halting_run(void) { 5248 5249 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5250 5251 hci_connection_t *connection; 5252 #ifdef ENABLE_BLE 5253 #ifdef ENABLE_LE_PERIPHERAL 5254 bool stop_advertismenets; 5255 #endif 5256 #endif 5257 5258 switch (hci_stack->substate) { 5259 case HCI_HALTING_CLASSIC_STOP: 5260 #ifdef ENABLE_CLASSIC 5261 if (!hci_can_send_command_packet_now()) return; 5262 5263 if (hci_stack->connectable || hci_stack->discoverable){ 5264 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5265 hci_send_cmd(&hci_write_scan_enable, 0); 5266 return; 5267 } 5268 #endif 5269 /* fall through */ 5270 5271 case HCI_HALTING_LE_ADV_STOP: 5272 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5273 5274 #ifdef ENABLE_BLE 5275 #ifdef ENABLE_LE_PERIPHERAL 5276 if (!hci_can_send_command_packet_now()) return; 5277 5278 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5279 5280 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5281 if (hci_extended_advertising_supported()){ 5282 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5283 btstack_linked_list_iterator_t it; 5284 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5285 // stop all periodic advertisements and check if an extended set is active 5286 while (btstack_linked_list_iterator_has_next(&it)){ 5287 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5288 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5289 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5290 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5291 return; 5292 } 5293 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5294 stop_advertismenets = true; 5295 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5296 } 5297 } 5298 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5299 if (stop_advertismenets){ 5300 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5301 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5302 return; 5303 } 5304 } else 5305 #else /* ENABLE_LE_PERIPHERAL */ 5306 { 5307 if (stop_advertismenets) { 5308 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5309 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5310 return; 5311 } 5312 } 5313 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5314 #endif /* ENABLE_LE_PERIPHERAL */ 5315 #endif /* ENABLE_BLE */ 5316 5317 /* fall through */ 5318 5319 case HCI_HALTING_LE_SCAN_STOP: 5320 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5321 if (!hci_can_send_command_packet_now()) return; 5322 5323 #ifdef ENABLE_BLE 5324 #ifdef ENABLE_LE_CENTRAL 5325 if (hci_stack->le_scanning_active){ 5326 hci_le_scan_stop(); 5327 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5328 return; 5329 } 5330 #endif 5331 #endif 5332 5333 /* fall through */ 5334 5335 case HCI_HALTING_DISCONNECT_ALL: 5336 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5337 if (!hci_can_send_command_packet_now()) return; 5338 5339 // close all open connections 5340 connection = (hci_connection_t *) hci_stack->connections; 5341 if (connection) { 5342 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5343 5344 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5345 5346 // check state 5347 switch(connection->state) { 5348 case SENT_DISCONNECT: 5349 case RECEIVED_DISCONNECTION_COMPLETE: 5350 // wait until connection is gone 5351 return; 5352 default: 5353 break; 5354 } 5355 5356 // finally, send the disconnect command 5357 connection->state = SENT_DISCONNECT; 5358 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5359 return; 5360 } 5361 5362 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5363 // stop BIGs and BIG Syncs 5364 if (hci_stack->le_audio_bigs != NULL){ 5365 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5366 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5367 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5368 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5369 return; 5370 } 5371 if (hci_stack->le_audio_big_syncs != NULL){ 5372 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5373 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5374 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5375 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5376 return; 5377 } 5378 #endif 5379 5380 btstack_run_loop_remove_timer(&hci_stack->timeout); 5381 5382 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5383 log_info("HCI_STATE_HALTING: wait 50 ms"); 5384 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5385 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5386 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5387 btstack_run_loop_add_timer(&hci_stack->timeout); 5388 break; 5389 5390 case HCI_HALTING_W4_CLOSE_TIMER: 5391 // keep waiting 5392 break; 5393 5394 case HCI_HALTING_CLOSE: 5395 // close left over connections (that had not been properly closed before) 5396 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5397 hci_discard_connections(); 5398 5399 log_info("HCI_STATE_HALTING, calling off"); 5400 5401 // switch mode 5402 hci_power_control_off(); 5403 5404 log_info("HCI_STATE_HALTING, emitting state"); 5405 hci_emit_state(); 5406 log_info("HCI_STATE_HALTING, done"); 5407 break; 5408 5409 default: 5410 break; 5411 } 5412 }; 5413 5414 static void hci_falling_asleep_run(void){ 5415 hci_connection_t * connection; 5416 switch(hci_stack->substate) { 5417 case HCI_FALLING_ASLEEP_DISCONNECT: 5418 log_info("HCI_STATE_FALLING_ASLEEP"); 5419 // close all open connections 5420 connection = (hci_connection_t *) hci_stack->connections; 5421 if (connection){ 5422 5423 // send disconnect 5424 if (!hci_can_send_command_packet_now()) return; 5425 5426 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5427 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5428 5429 // send disconnected event right away - causes higher layer connections to get closed, too. 5430 hci_shutdown_connection(connection); 5431 return; 5432 } 5433 5434 if (hci_classic_supported()){ 5435 // disable page and inquiry scan 5436 if (!hci_can_send_command_packet_now()) return; 5437 5438 log_info("HCI_STATE_HALTING, disabling inq scans"); 5439 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5440 5441 // continue in next sub state 5442 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5443 break; 5444 } 5445 5446 /* fall through */ 5447 5448 case HCI_FALLING_ASLEEP_COMPLETE: 5449 log_info("HCI_STATE_HALTING, calling sleep"); 5450 // switch mode 5451 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5452 hci_emit_state(); 5453 break; 5454 5455 default: 5456 break; 5457 } 5458 } 5459 5460 #ifdef ENABLE_CLASSIC 5461 5462 static void hci_update_scan_enable(void){ 5463 // 2 = page scan, 1 = inq scan 5464 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5465 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5466 hci_run(); 5467 } 5468 5469 void gap_discoverable_control(uint8_t enable){ 5470 if (enable) enable = 1; // normalize argument 5471 5472 if (hci_stack->discoverable == enable){ 5473 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5474 return; 5475 } 5476 5477 hci_stack->discoverable = enable; 5478 hci_update_scan_enable(); 5479 } 5480 5481 void gap_connectable_control(uint8_t enable){ 5482 if (enable) enable = 1; // normalize argument 5483 5484 // don't emit event 5485 if (hci_stack->connectable == enable) return; 5486 5487 hci_stack->connectable = enable; 5488 hci_update_scan_enable(); 5489 } 5490 #endif 5491 5492 void gap_local_bd_addr(bd_addr_t address_buffer){ 5493 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5494 } 5495 5496 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5497 static void hci_host_num_completed_packets(void){ 5498 5499 // create packet manually as arrays are not supported and num_commands should not get reduced 5500 hci_reserve_packet_buffer(); 5501 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5502 5503 uint16_t size = 0; 5504 uint16_t num_handles = 0; 5505 packet[size++] = 0x35; 5506 packet[size++] = 0x0c; 5507 size++; // skip param len 5508 size++; // skip num handles 5509 5510 // add { handle, packets } entries 5511 btstack_linked_item_t * it; 5512 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5513 hci_connection_t * connection = (hci_connection_t *) it; 5514 if (connection->num_packets_completed){ 5515 little_endian_store_16(packet, size, connection->con_handle); 5516 size += 2; 5517 little_endian_store_16(packet, size, connection->num_packets_completed); 5518 size += 2; 5519 // 5520 num_handles++; 5521 connection->num_packets_completed = 0; 5522 } 5523 } 5524 5525 packet[2] = size - 3; 5526 packet[3] = num_handles; 5527 5528 hci_stack->host_completed_packets = 0; 5529 5530 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5531 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5532 5533 // release packet buffer for synchronous transport implementations 5534 if (hci_transport_synchronous()){ 5535 hci_release_packet_buffer(); 5536 hci_emit_transport_packet_sent(); 5537 } 5538 } 5539 #endif 5540 5541 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5542 UNUSED(ds); 5543 hci_stack->substate = HCI_HALTING_CLOSE; 5544 hci_halting_run(); 5545 } 5546 5547 static bool hci_run_acl_fragments(void){ 5548 if (hci_stack->acl_fragmentation_total_size > 0u) { 5549 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5550 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5551 if (connection) { 5552 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5553 hci_send_acl_packet_fragments(connection); 5554 return true; 5555 } 5556 } else { 5557 // connection gone -> discard further fragments 5558 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5559 hci_stack->acl_fragmentation_total_size = 0; 5560 hci_stack->acl_fragmentation_pos = 0; 5561 } 5562 } 5563 return false; 5564 } 5565 5566 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5567 static bool hci_run_iso_fragments(void){ 5568 if (hci_stack->iso_fragmentation_total_size > 0u) { 5569 // TODO: flow control 5570 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5571 hci_send_iso_packet_fragments(); 5572 return true; 5573 } 5574 } 5575 return false; 5576 } 5577 #endif 5578 5579 #ifdef ENABLE_CLASSIC 5580 5581 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5582 static bool hci_classic_operation_active(void) { 5583 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5584 return true; 5585 } 5586 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5587 return true; 5588 } 5589 btstack_linked_item_t * it; 5590 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5591 hci_connection_t *connection = (hci_connection_t *) it; 5592 switch (connection->state) { 5593 case SENT_CREATE_CONNECTION: 5594 case SENT_CANCEL_CONNECTION: 5595 case SENT_DISCONNECT: 5596 return true; 5597 default: 5598 break; 5599 } 5600 } 5601 return false; 5602 } 5603 #endif 5604 5605 static bool hci_run_general_gap_classic(void){ 5606 5607 // assert stack is working and classic is active 5608 if (hci_classic_supported() == false) return false; 5609 if (hci_stack->state != HCI_STATE_WORKING) return false; 5610 5611 // decline incoming connections 5612 if (hci_stack->decline_reason){ 5613 uint8_t reason = hci_stack->decline_reason; 5614 hci_stack->decline_reason = 0; 5615 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5616 return true; 5617 } 5618 5619 if (hci_stack->gap_tasks_classic != 0){ 5620 hci_run_gap_tasks_classic(); 5621 return true; 5622 } 5623 5624 // start/stop inquiry 5625 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5626 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5627 if (hci_classic_operation_active() == false) 5628 #endif 5629 { 5630 uint8_t duration = hci_stack->inquiry_state; 5631 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5632 if (hci_stack->inquiry_max_period_length != 0){ 5633 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); 5634 } else { 5635 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5636 } 5637 return true; 5638 } 5639 } 5640 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5641 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5642 hci_send_cmd(&hci_inquiry_cancel); 5643 return true; 5644 } 5645 5646 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5647 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5648 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5649 return true; 5650 } 5651 5652 // remote name request 5653 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5654 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5655 if (hci_classic_operation_active() == false) 5656 #endif 5657 { 5658 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5659 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5660 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5661 return true; 5662 } 5663 } 5664 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5665 // Local OOB data 5666 if (hci_stack->classic_read_local_oob_data){ 5667 hci_stack->classic_read_local_oob_data = false; 5668 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5669 hci_send_cmd(&hci_read_local_extended_oob_data); 5670 } else { 5671 hci_send_cmd(&hci_read_local_oob_data); 5672 } 5673 } 5674 #endif 5675 // pairing 5676 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5677 uint8_t state = hci_stack->gap_pairing_state; 5678 uint8_t pin_code[16]; 5679 switch (state){ 5680 case GAP_PAIRING_STATE_SEND_PIN: 5681 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5682 memset(pin_code, 0, 16); 5683 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5684 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5685 break; 5686 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5687 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5688 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5689 break; 5690 case GAP_PAIRING_STATE_SEND_PASSKEY: 5691 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5692 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5693 break; 5694 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5695 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5696 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5697 break; 5698 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5699 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5700 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5701 break; 5702 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5703 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5704 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5705 break; 5706 default: 5707 break; 5708 } 5709 return true; 5710 } 5711 return false; 5712 } 5713 #endif 5714 5715 #ifdef ENABLE_BLE 5716 5717 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5718 static uint8_t hci_le_num_phys(uint8_t phys){ 5719 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5720 btstack_assert(phys); 5721 return num_bits_set[phys]; 5722 } 5723 #endif 5724 5725 #ifdef ENABLE_LE_CENTRAL 5726 static void hci_le_scan_stop(void){ 5727 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5728 if (hci_extended_advertising_supported()) { 5729 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5730 } else 5731 #endif 5732 { 5733 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5734 } 5735 } 5736 5737 static void 5738 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5739 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5740 if (hci_extended_advertising_supported()) { 5741 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5742 uint16_t le_connection_scan_interval[3]; 5743 uint16_t le_connection_scan_window[3]; 5744 uint16_t le_connection_interval_min[3]; 5745 uint16_t le_connection_interval_max[3]; 5746 uint16_t le_connection_latency[3]; 5747 uint16_t le_supervision_timeout[3]; 5748 uint16_t le_minimum_ce_length[3]; 5749 uint16_t le_maximum_ce_length[3]; 5750 5751 uint8_t i; 5752 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5753 for (i=0;i<num_phys;i++){ 5754 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5755 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5756 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5757 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5758 le_connection_latency[i] = hci_stack->le_connection_latency; 5759 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5760 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5761 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5762 } 5763 hci_send_cmd(&hci_le_extended_create_connection, 5764 initiator_filter_policy, 5765 hci_stack->le_connection_own_addr_type, // our addr type: 5766 address_type, // peer address type 5767 address, // peer bd addr 5768 hci_stack->le_connection_phys, // initiating PHY 5769 le_connection_scan_interval, // conn scan interval 5770 le_connection_scan_window, // conn scan windows 5771 le_connection_interval_min, // conn interval min 5772 le_connection_interval_max, // conn interval max 5773 le_connection_latency, // conn latency 5774 le_supervision_timeout, // conn latency 5775 le_minimum_ce_length, // min ce length 5776 le_maximum_ce_length // max ce length 5777 ); 5778 } else 5779 #endif 5780 { 5781 hci_send_cmd(&hci_le_create_connection, 5782 hci_stack->le_connection_scan_interval, // conn scan interval 5783 hci_stack->le_connection_scan_window, // conn scan windows 5784 initiator_filter_policy, // don't use whitelist 5785 address_type, // peer address type 5786 address, // peer bd addr 5787 hci_stack->le_connection_own_addr_type, // our addr type: 5788 hci_stack->le_connection_interval_min, // conn interval min 5789 hci_stack->le_connection_interval_max, // conn interval max 5790 hci_stack->le_connection_latency, // conn latency 5791 hci_stack->le_supervision_timeout, // conn latency 5792 hci_stack->le_minimum_ce_length, // min ce length 5793 hci_stack->le_maximum_ce_length // max ce length 5794 ); 5795 } 5796 } 5797 #endif 5798 5799 #ifdef ENABLE_LE_PERIPHERAL 5800 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5801 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5802 uint8_t operation = 0; 5803 if (pos == 0){ 5804 // first fragment or complete data 5805 operation |= 1; 5806 } 5807 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5808 // last fragment or complete data 5809 operation |= 2; 5810 } 5811 return operation; 5812 } 5813 #endif 5814 #endif 5815 5816 static bool hci_run_general_gap_le(void){ 5817 5818 btstack_linked_list_iterator_t lit; 5819 5820 // Phase 1: collect what to stop 5821 5822 #ifdef ENABLE_LE_CENTRAL 5823 bool scanning_stop = false; 5824 bool connecting_stop = false; 5825 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5826 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5827 bool periodic_sync_stop = false; 5828 #endif 5829 #endif 5830 #endif 5831 5832 #ifdef ENABLE_LE_PERIPHERAL 5833 bool advertising_stop = false; 5834 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5835 le_advertising_set_t * advertising_stop_set = NULL; 5836 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5837 bool periodic_advertising_stop = false; 5838 #endif 5839 #endif 5840 #endif 5841 5842 // check if own address changes 5843 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5844 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5845 5846 // check if whitelist needs modification 5847 bool whitelist_modification_pending = false; 5848 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5849 while (btstack_linked_list_iterator_has_next(&lit)){ 5850 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5851 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5852 whitelist_modification_pending = true; 5853 break; 5854 } 5855 } 5856 5857 // check if resolving list needs modification 5858 bool resolving_list_modification_pending = false; 5859 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5860 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5861 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5862 resolving_list_modification_pending = true; 5863 } 5864 #endif 5865 5866 #ifdef ENABLE_LE_CENTRAL 5867 5868 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5869 // check if periodic advertiser list needs modification 5870 bool periodic_list_modification_pending = false; 5871 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5872 while (btstack_linked_list_iterator_has_next(&lit)){ 5873 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5874 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5875 periodic_list_modification_pending = true; 5876 break; 5877 } 5878 } 5879 #endif 5880 5881 // scanning control 5882 if (hci_stack->le_scanning_active) { 5883 // stop if: 5884 // - parameter change required 5885 // - it's disabled 5886 // - whitelist change required but used for scanning 5887 // - resolving list modified 5888 // - own address changes 5889 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5890 if ((hci_stack->le_scanning_param_update) || 5891 !hci_stack->le_scanning_enabled || 5892 (scanning_uses_whitelist && whitelist_modification_pending) || 5893 resolving_list_modification_pending || 5894 random_address_change){ 5895 5896 scanning_stop = true; 5897 } 5898 } 5899 5900 // connecting control 5901 bool connecting_with_whitelist; 5902 switch (hci_stack->le_connecting_state){ 5903 case LE_CONNECTING_DIRECT: 5904 case LE_CONNECTING_WHITELIST: 5905 // stop connecting if: 5906 // - connecting uses white and whitelist modification pending 5907 // - if it got disabled 5908 // - resolving list modified 5909 // - own address changes 5910 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5911 if ((connecting_with_whitelist && whitelist_modification_pending) || 5912 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5913 resolving_list_modification_pending || 5914 random_address_change) { 5915 5916 connecting_stop = true; 5917 } 5918 break; 5919 default: 5920 break; 5921 } 5922 5923 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5924 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5925 // periodic sync control 5926 bool sync_with_advertiser_list; 5927 switch(hci_stack->le_periodic_sync_state){ 5928 case LE_CONNECTING_DIRECT: 5929 case LE_CONNECTING_WHITELIST: 5930 // stop sync if: 5931 // - sync with advertiser list and advertiser list modification pending 5932 // - if it got disabled 5933 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5934 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5935 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5936 periodic_sync_stop = true; 5937 } 5938 break; 5939 default: 5940 break; 5941 } 5942 #endif 5943 #endif 5944 5945 #endif /* ENABLE_LE_CENTRAL */ 5946 5947 #ifdef ENABLE_LE_PERIPHERAL 5948 // le advertisement control 5949 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5950 // stop if: 5951 // - parameter change required 5952 // - random address used in advertising and changes 5953 // - it's disabled 5954 // - whitelist change required but used for advertisement filter policy 5955 // - resolving list modified 5956 // - own address changes 5957 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5958 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5959 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5960 if (advertising_change || 5961 (advertising_uses_random_address && random_address_change) || 5962 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5963 (advertising_uses_whitelist && whitelist_modification_pending) || 5964 resolving_list_modification_pending || 5965 random_address_change) { 5966 5967 advertising_stop = true; 5968 } 5969 } 5970 5971 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5972 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5973 btstack_linked_list_iterator_t it; 5974 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5975 while (btstack_linked_list_iterator_has_next(&it)){ 5976 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5977 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5978 // stop if: 5979 // - parameter change required 5980 // - random address used in connectable advertising and changes 5981 // - it's disabled 5982 // - whitelist change required but used for advertisement filter policy 5983 // - resolving list modified 5984 // - own address changes 5985 // - advertisement set will be removed 5986 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5987 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5988 bool advertising_uses_random_address = 5989 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5990 advertising_connectable; 5991 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5992 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5993 bool advertising_set_random_address_change = 5994 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5995 bool advertising_set_will_be_removed = 5996 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5997 if (advertising_parameter_change || 5998 (advertising_uses_random_address && advertising_set_random_address_change) || 5999 (advertising_enabled == false) || 6000 (advertising_uses_whitelist && whitelist_modification_pending) || 6001 resolving_list_modification_pending || 6002 advertising_set_will_be_removed) { 6003 6004 advertising_stop = true; 6005 advertising_stop_set = advertising_set; 6006 break; 6007 } 6008 } 6009 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6010 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6011 // stop if: 6012 // - it's disabled 6013 // - parameter change required 6014 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6015 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6016 if ((periodic_enabled == false) || periodic_parameter_change){ 6017 periodic_advertising_stop = true; 6018 advertising_stop_set = advertising_set; 6019 } 6020 } 6021 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6022 } 6023 } 6024 #endif 6025 6026 #endif 6027 6028 6029 // Phase 2: stop everything that should be off during modifications 6030 6031 6032 // 2.1 Outgoing connection 6033 #ifdef ENABLE_LE_CENTRAL 6034 if (connecting_stop){ 6035 hci_send_cmd(&hci_le_create_connection_cancel); 6036 return true; 6037 } 6038 #endif 6039 6040 // 2.2 Scanning 6041 #ifdef ENABLE_LE_CENTRAL 6042 if (scanning_stop){ 6043 hci_stack->le_scanning_active = false; 6044 hci_le_scan_stop(); 6045 return true; 6046 } 6047 6048 // 2.3 Periodic Sync 6049 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6050 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6051 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6052 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6053 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6054 return true; 6055 } 6056 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6057 if (periodic_sync_stop){ 6058 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6059 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6060 return true; 6061 } 6062 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6063 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6064 #endif /* ENABLE_LE_CENTRAL */ 6065 6066 // 2.4 Advertising: legacy, extended, periodic 6067 #ifdef ENABLE_LE_PERIPHERAL 6068 if (advertising_stop){ 6069 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6070 if (hci_extended_advertising_supported()) { 6071 uint8_t advertising_stop_handle; 6072 if (advertising_stop_set != NULL){ 6073 advertising_stop_handle = advertising_stop_set->advertising_handle; 6074 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6075 } else { 6076 advertising_stop_handle = 0; 6077 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6078 } 6079 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6080 const uint16_t durations[] = { 0 }; 6081 const uint16_t max_events[] = { 0 }; 6082 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6083 } else 6084 #endif 6085 { 6086 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6087 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6088 } 6089 return true; 6090 } 6091 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6092 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6093 if (periodic_advertising_stop){ 6094 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6095 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6096 return true; 6097 } 6098 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6099 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6100 #endif /* ENABLE_LE_PERIPHERAL */ 6101 6102 6103 // Phase 3: modify 6104 6105 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6106 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6107 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6108 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6109 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6110 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6111 #endif 6112 return true; 6113 } 6114 6115 #ifdef ENABLE_LE_CENTRAL 6116 if (hci_stack->le_scanning_param_update){ 6117 hci_stack->le_scanning_param_update = false; 6118 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6119 if (hci_extended_advertising_supported()){ 6120 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6121 uint8_t scan_types[2]; 6122 uint16_t scan_intervals[2]; 6123 uint16_t scan_windows[2]; 6124 6125 uint8_t i; 6126 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6127 for (i=0;i<num_phys;i++){ 6128 scan_types[i] = hci_stack->le_scan_type; 6129 scan_intervals[i] = hci_stack->le_scan_interval; 6130 scan_windows[i] = hci_stack->le_scan_window; 6131 } 6132 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6133 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6134 } else 6135 #endif 6136 { 6137 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6138 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6139 } 6140 return true; 6141 } 6142 #endif 6143 6144 #ifdef ENABLE_LE_PERIPHERAL 6145 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6146 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6147 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6148 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6149 if (hci_extended_advertising_supported()){ 6150 // map advertisment type to advertising event properties 6151 uint16_t adv_event_properties = 0; 6152 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6153 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6154 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6155 } 6156 hci_stack->le_advertising_set_in_current_command = 0; 6157 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6158 0, 6159 adv_event_properties, 6160 hci_stack->le_advertisements_interval_min, 6161 hci_stack->le_advertisements_interval_max, 6162 hci_stack->le_advertisements_channel_map, 6163 hci_stack->le_advertisements_own_addr_type, 6164 hci_stack->le_advertisements_direct_address_type, 6165 hci_stack->le_advertisements_direct_address, 6166 hci_stack->le_advertisements_filter_policy, 6167 0x7f, // tx power: no preference 6168 0x01, // primary adv phy: LE 1M 6169 0, // secondary adv max skip 6170 0, // secondary adv phy 6171 0, // adv sid 6172 0 // scan request notification 6173 ); 6174 } else 6175 #endif 6176 { 6177 hci_send_cmd(&hci_le_set_advertising_parameters, 6178 hci_stack->le_advertisements_interval_min, 6179 hci_stack->le_advertisements_interval_max, 6180 hci_stack->le_advertisements_type, 6181 hci_stack->le_advertisements_own_addr_type, 6182 hci_stack->le_advertisements_direct_address_type, 6183 hci_stack->le_advertisements_direct_address, 6184 hci_stack->le_advertisements_channel_map, 6185 hci_stack->le_advertisements_filter_policy); 6186 } 6187 return true; 6188 } 6189 6190 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6191 // assumption: only set if extended advertising is supported 6192 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6193 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6194 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6195 return true; 6196 } 6197 #endif 6198 6199 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6200 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6201 uint8_t adv_data_clean[31]; 6202 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6203 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6204 hci_stack->le_advertisements_data_len); 6205 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6206 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6207 if (hci_extended_advertising_supported()){ 6208 hci_stack->le_advertising_set_in_current_command = 0; 6209 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6210 } else 6211 #endif 6212 { 6213 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6214 } 6215 return true; 6216 } 6217 6218 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6219 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6220 uint8_t scan_data_clean[31]; 6221 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6222 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6223 hci_stack->le_scan_response_data_len); 6224 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6225 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6226 if (hci_extended_advertising_supported()){ 6227 hci_stack->le_advertising_set_in_current_command = 0; 6228 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6229 } else 6230 #endif 6231 { 6232 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6233 } 6234 return true; 6235 } 6236 6237 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6238 if (hci_extended_advertising_supported()) { 6239 btstack_linked_list_iterator_t it; 6240 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6241 while (btstack_linked_list_iterator_has_next(&it)){ 6242 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6243 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6244 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6245 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6246 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6247 return true; 6248 } 6249 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6250 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6251 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6252 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6253 advertising_set->advertising_handle, 6254 advertising_set->extended_params.advertising_event_properties, 6255 advertising_set->extended_params.primary_advertising_interval_min, 6256 advertising_set->extended_params.primary_advertising_interval_max, 6257 advertising_set->extended_params.primary_advertising_channel_map, 6258 advertising_set->extended_params.own_address_type, 6259 advertising_set->extended_params.peer_address_type, 6260 advertising_set->extended_params.peer_address, 6261 advertising_set->extended_params.advertising_filter_policy, 6262 advertising_set->extended_params.advertising_tx_power, 6263 advertising_set->extended_params.primary_advertising_phy, 6264 advertising_set->extended_params.secondary_advertising_max_skip, 6265 advertising_set->extended_params.secondary_advertising_phy, 6266 advertising_set->extended_params.advertising_sid, 6267 advertising_set->extended_params.scan_request_notification_enable 6268 ); 6269 return true; 6270 } 6271 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6272 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6273 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6274 return true; 6275 } 6276 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6277 uint16_t pos = advertising_set->adv_data_pos; 6278 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6279 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6280 if ((operation & 0x02) != 0){ 6281 // last fragment or complete data 6282 operation |= 2; 6283 advertising_set->adv_data_pos = 0; 6284 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6285 } else { 6286 advertising_set->adv_data_pos += data_to_upload; 6287 } 6288 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6289 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6290 return true; 6291 } 6292 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6293 uint16_t pos = advertising_set->scan_data_pos; 6294 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6295 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6296 if ((operation & 0x02) != 0){ 6297 advertising_set->scan_data_pos = 0; 6298 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6299 } else { 6300 advertising_set->scan_data_pos += data_to_upload; 6301 } 6302 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6303 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6304 return true; 6305 } 6306 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6307 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6308 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6309 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6310 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6311 advertising_set->advertising_handle, 6312 advertising_set->periodic_params.periodic_advertising_interval_min, 6313 advertising_set->periodic_params.periodic_advertising_interval_max, 6314 advertising_set->periodic_params.periodic_advertising_properties); 6315 return true; 6316 } 6317 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6318 uint16_t pos = advertising_set->periodic_data_pos; 6319 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6320 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6321 if ((operation & 0x02) != 0){ 6322 // last fragment or complete data 6323 operation |= 2; 6324 advertising_set->periodic_data_pos = 0; 6325 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6326 } else { 6327 advertising_set->periodic_data_pos += data_to_upload; 6328 } 6329 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6330 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6331 return true; 6332 } 6333 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6334 } 6335 } 6336 #endif 6337 6338 #endif 6339 6340 #ifdef ENABLE_LE_CENTRAL 6341 // if connect with whitelist was active and is not cancelled yet, wait until next time 6342 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6343 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6344 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6345 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6346 #endif 6347 #endif 6348 6349 // LE Whitelist Management 6350 if (whitelist_modification_pending){ 6351 // add/remove entries 6352 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6353 while (btstack_linked_list_iterator_has_next(&lit)){ 6354 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6355 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6356 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6357 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6358 return true; 6359 } 6360 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6361 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6362 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6363 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6364 return true; 6365 } 6366 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6367 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6368 btstack_memory_whitelist_entry_free(entry); 6369 } 6370 } 6371 } 6372 6373 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6374 // LE Resolving List Management 6375 if (resolving_list_supported) { 6376 uint16_t i; 6377 switch (hci_stack->le_resolving_list_state) { 6378 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6379 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6380 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6381 return true; 6382 case LE_RESOLVING_LIST_READ_SIZE: 6383 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6384 hci_send_cmd(&hci_le_read_resolving_list_size); 6385 return true; 6386 case LE_RESOLVING_LIST_SEND_CLEAR: 6387 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6388 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6389 sizeof(hci_stack->le_resolving_list_add_entries)); 6390 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6391 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6392 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6393 sizeof(hci_stack->le_resolving_list_remove_entries)); 6394 hci_send_cmd(&hci_le_clear_resolving_list); 6395 return true; 6396 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6397 // first remove old entries 6398 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6399 uint8_t offset = i >> 3; 6400 uint8_t mask = 1 << (i & 7); 6401 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6402 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6403 bd_addr_t peer_identity_addreses; 6404 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6405 sm_key_t peer_irk; 6406 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6407 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6408 6409 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6410 // trigger whitelist entry 'update' (work around for controller bug) 6411 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6412 while (btstack_linked_list_iterator_has_next(&lit)) { 6413 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6414 if (entry->address_type != peer_identity_addr_type) continue; 6415 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6416 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6417 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6418 } 6419 #endif 6420 6421 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6422 peer_identity_addreses); 6423 return true; 6424 } 6425 6426 // then add new entries 6427 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6428 uint8_t offset = i >> 3; 6429 uint8_t mask = 1 << (i & 7); 6430 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6431 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6432 bd_addr_t peer_identity_addreses; 6433 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6434 sm_key_t peer_irk; 6435 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6436 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6437 if (btstack_is_null(peer_irk, 16)) continue; 6438 const uint8_t *local_irk = gap_get_persistent_irk(); 6439 // command uses format specifier 'P' that stores 16-byte value without flip 6440 uint8_t local_irk_flipped[16]; 6441 uint8_t peer_irk_flipped[16]; 6442 reverse_128(local_irk, local_irk_flipped); 6443 reverse_128(peer_irk, peer_irk_flipped); 6444 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6445 peer_irk_flipped, local_irk_flipped); 6446 return true; 6447 } 6448 6449 // finally, set privacy mode 6450 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6451 uint8_t offset = i >> 3; 6452 uint8_t mask = 1 << (i & 7); 6453 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6454 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6455 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6456 // Network Privacy Mode is default 6457 continue; 6458 } 6459 bd_addr_t peer_identity_address; 6460 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6461 sm_key_t peer_irk; 6462 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6463 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6464 if (btstack_is_null(peer_irk, 16)) continue; 6465 // command uses format specifier 'P' that stores 16-byte value without flip 6466 uint8_t peer_irk_flipped[16]; 6467 reverse_128(peer_irk, peer_irk_flipped); 6468 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6469 return true; 6470 } 6471 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6472 break; 6473 6474 default: 6475 break; 6476 } 6477 } 6478 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6479 #endif 6480 6481 #ifdef ENABLE_LE_CENTRAL 6482 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6483 // LE Whitelist Management 6484 if (periodic_list_modification_pending){ 6485 // add/remove entries 6486 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6487 while (btstack_linked_list_iterator_has_next(&lit)){ 6488 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6489 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6490 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6491 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6492 return true; 6493 } 6494 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6495 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6496 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6497 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6498 return true; 6499 } 6500 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6501 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6502 btstack_memory_periodic_advertiser_list_entry_free(entry); 6503 } 6504 } 6505 } 6506 #endif 6507 #endif 6508 6509 #ifdef ENABLE_LE_CENTRAL 6510 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6511 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6512 if (hci_stack->le_past_set_default_params){ 6513 hci_stack->le_past_set_default_params = false; 6514 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6515 hci_stack->le_past_mode, 6516 hci_stack->le_past_skip, 6517 hci_stack->le_past_sync_timeout, 6518 hci_stack->le_past_cte_type); 6519 return true; 6520 } 6521 #endif 6522 #endif 6523 #endif 6524 6525 // post-pone all actions until stack is fully working 6526 if (hci_stack->state != HCI_STATE_WORKING) return false; 6527 6528 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6529 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6530 6531 // Phase 4: restore state 6532 6533 #ifdef ENABLE_LE_CENTRAL 6534 // re-start scanning 6535 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6536 hci_stack->le_scanning_active = true; 6537 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6538 if (hci_extended_advertising_supported()){ 6539 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6540 } else 6541 #endif 6542 { 6543 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6544 } 6545 return true; 6546 } 6547 #endif 6548 6549 #ifdef ENABLE_LE_CENTRAL 6550 // re-start connecting 6551 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6552 bd_addr_t null_addr; 6553 memset(null_addr, 0, 6); 6554 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6555 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6556 hci_send_le_create_connection(1, 0, null_addr); 6557 return true; 6558 } 6559 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6560 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6561 switch(hci_stack->le_periodic_sync_request){ 6562 case LE_CONNECTING_DIRECT: 6563 case LE_CONNECTING_WHITELIST: 6564 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6565 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6566 hci_stack->le_periodic_sync_options, 6567 hci_stack->le_periodic_sync_advertising_sid, 6568 hci_stack->le_periodic_sync_advertiser_address_type, 6569 hci_stack->le_periodic_sync_advertiser_address, 6570 hci_stack->le_periodic_sync_skip, 6571 hci_stack->le_periodic_sync_timeout, 6572 hci_stack->le_periodic_sync_cte_type); 6573 return true; 6574 default: 6575 break; 6576 } 6577 } 6578 #endif 6579 #endif 6580 6581 #ifdef ENABLE_LE_PERIPHERAL 6582 // re-start advertising 6583 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6584 // check if advertisements should be enabled given 6585 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6586 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6587 6588 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6589 if (hci_extended_advertising_supported()){ 6590 const uint8_t advertising_handles[] = { 0 }; 6591 const uint16_t durations[] = { 0 }; 6592 const uint16_t max_events[] = { 0 }; 6593 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6594 } else 6595 #endif 6596 { 6597 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6598 } 6599 return true; 6600 } 6601 6602 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6603 if (hci_extended_advertising_supported()) { 6604 btstack_linked_list_iterator_t it; 6605 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6606 while (btstack_linked_list_iterator_has_next(&it)) { 6607 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6608 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6609 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6610 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6611 const uint16_t durations[] = { advertising_set->enable_timeout }; 6612 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6613 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6614 return true; 6615 } 6616 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6617 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6618 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6619 uint8_t enable = 1; 6620 if (advertising_set->periodic_include_adi){ 6621 enable |= 2; 6622 } 6623 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6624 return true; 6625 } 6626 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6627 } 6628 } 6629 #endif 6630 #endif 6631 6632 return false; 6633 } 6634 6635 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6636 static bool hci_run_iso_tasks(void){ 6637 btstack_linked_list_iterator_t it; 6638 6639 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6640 return false; 6641 } 6642 6643 // BIG 6644 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6645 while (btstack_linked_list_iterator_has_next(&it)){ 6646 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6647 switch (big->state){ 6648 case LE_AUDIO_BIG_STATE_CREATE: 6649 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6650 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6651 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6652 hci_send_cmd(&hci_le_create_big, 6653 big->params->big_handle, 6654 big->params->advertising_handle, 6655 big->params->num_bis, 6656 big->params->sdu_interval_us, 6657 big->params->max_sdu, 6658 big->params->max_transport_latency_ms, 6659 big->params->rtn, 6660 big->params->phy, 6661 big->params->packing, 6662 big->params->framing, 6663 big->params->encryption, 6664 big->params->broadcast_code); 6665 return true; 6666 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6667 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6668 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, 0, 0, 0, 0, 0, NULL); 6669 return true; 6670 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6671 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6672 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6673 return true; 6674 case LE_AUDIO_BIG_STATE_TERMINATE: 6675 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6676 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6677 return true; 6678 default: 6679 break; 6680 } 6681 } 6682 6683 // BIG Sync 6684 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6685 while (btstack_linked_list_iterator_has_next(&it)){ 6686 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6687 switch (big_sync->state){ 6688 case LE_AUDIO_BIG_STATE_CREATE: 6689 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6690 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6691 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6692 hci_send_cmd(&hci_le_big_create_sync, 6693 big_sync->params->big_handle, 6694 big_sync->params->sync_handle, 6695 big_sync->params->encryption, 6696 big_sync->params->broadcast_code, 6697 big_sync->params->mse, 6698 big_sync->params->big_sync_timeout_10ms, 6699 big_sync->params->num_bis, 6700 big_sync->params->bis_indices); 6701 return true; 6702 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6703 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6704 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, 0, 0, 0, 0, 0, NULL); 6705 return true; 6706 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6707 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6708 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6709 return true; 6710 case LE_AUDIO_BIG_STATE_TERMINATE: 6711 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6712 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6713 return true; 6714 default: 6715 break; 6716 } 6717 } 6718 6719 // CIG 6720 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6721 while (btstack_linked_list_iterator_has_next(&it)) { 6722 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6723 uint8_t i; 6724 // Set CIG Parameters 6725 uint8_t cis_id[MAX_NR_CIS]; 6726 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6727 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6728 uint8_t phy_c_to_p[MAX_NR_CIS]; 6729 uint8_t phy_p_to_c[MAX_NR_CIS]; 6730 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6731 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6732 switch (cig->state) { 6733 case LE_AUDIO_CIG_STATE_CREATE: 6734 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6735 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6736 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6737 le_audio_cig_params_t * params = cig->params; 6738 for (i = 0; i < params->num_cis; i++) { 6739 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6740 cis_id[i] = cis_params->cis_id; 6741 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6742 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6743 phy_c_to_p[i] = cis_params->phy_c_to_p; 6744 phy_p_to_c[i] = cis_params->phy_p_to_c; 6745 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6746 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6747 } 6748 hci_send_cmd(&hci_le_set_cig_parameters, 6749 cig->cig_id, 6750 params->sdu_interval_c_to_p, 6751 params->sdu_interval_p_to_c, 6752 params->worst_case_sca, 6753 params->packing, 6754 params->framing, 6755 params->max_transport_latency_c_to_p, 6756 params->max_transport_latency_p_to_c, 6757 params->num_cis, 6758 cis_id, 6759 max_sdu_c_to_p, 6760 max_sdu_p_to_c, 6761 phy_c_to_p, 6762 phy_p_to_c, 6763 rtn_c_to_p, 6764 rtn_p_to_c 6765 ); 6766 return true; 6767 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6768 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6769 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6770 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6771 for (i=0;i<cig->num_cis;i++){ 6772 cig->cis_setup_active[i] = true; 6773 } 6774 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6775 return true; 6776 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6777 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6778 // find next path to setup 6779 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6780 if (cig->cis_established[cis_index] == false) { 6781 continue; 6782 } 6783 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6784 bool setup = true; 6785 if (cis_direction == 0){ 6786 // 0 - input - host to controller 6787 // we are central => central to peripheral 6788 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6789 } else { 6790 // 1 - output - controller to host 6791 // we are central => peripheral to central 6792 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6793 } 6794 if (setup){ 6795 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6796 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6797 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6798 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6799 return true; 6800 } 6801 cig->state_vars.next_cis++; 6802 } 6803 // emit done 6804 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6805 default: 6806 break; 6807 } 6808 } 6809 6810 // CIS Accept/Reject 6811 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6812 while (btstack_linked_list_iterator_has_next(&it)) { 6813 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6814 hci_con_handle_t con_handle; 6815 switch (iso_stream->state){ 6816 case HCI_ISO_STREAM_W2_ACCEPT: 6817 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6818 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6819 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6820 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6821 return true; 6822 case HCI_ISO_STREAM_W2_REJECT: 6823 con_handle = iso_stream->cis_handle; 6824 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6825 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6826 hci_iso_stream_finalize(iso_stream); 6827 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6828 return true; 6829 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6830 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6831 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6832 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6833 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6834 break; 6835 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6836 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6837 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6838 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6839 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6840 break; 6841 default: 6842 break; 6843 } 6844 } 6845 6846 return false; 6847 } 6848 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6849 #endif 6850 6851 static bool hci_run_general_pending_commands(void){ 6852 btstack_linked_item_t * it; 6853 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6854 hci_connection_t * connection = (hci_connection_t *) it; 6855 6856 switch(connection->state){ 6857 case SEND_CREATE_CONNECTION: 6858 switch(connection->address_type){ 6859 #ifdef ENABLE_CLASSIC 6860 case BD_ADDR_TYPE_ACL: 6861 log_info("sending hci_create_connection"); 6862 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6863 break; 6864 #endif 6865 default: 6866 #ifdef ENABLE_BLE 6867 #ifdef ENABLE_LE_CENTRAL 6868 log_info("sending hci_le_create_connection"); 6869 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6870 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6871 hci_send_le_create_connection(0, connection->address_type, connection->address); 6872 connection->state = SENT_CREATE_CONNECTION; 6873 #endif 6874 #endif 6875 break; 6876 } 6877 return true; 6878 6879 #ifdef ENABLE_CLASSIC 6880 case RECEIVED_CONNECTION_REQUEST: 6881 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6882 log_info("sending hci_accept_connection_request"); 6883 connection->state = ACCEPTED_CONNECTION_REQUEST; 6884 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6885 return true; 6886 } 6887 break; 6888 #endif 6889 case SEND_DISCONNECT: 6890 connection->state = SENT_DISCONNECT; 6891 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6892 return true; 6893 6894 default: 6895 break; 6896 } 6897 6898 // no further commands if connection is about to get shut down 6899 if (connection->state == SENT_DISCONNECT) continue; 6900 6901 #ifdef ENABLE_CLASSIC 6902 6903 // Handling link key request requires remote supported features 6904 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6905 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6906 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6907 6908 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6909 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6910 if (have_link_key && security_level_sufficient){ 6911 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6912 } else { 6913 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6914 } 6915 return true; 6916 } 6917 6918 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6919 log_info("denying to pin request"); 6920 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6921 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6922 return true; 6923 } 6924 6925 // security assessment requires remote features 6926 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6927 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6928 hci_ssp_assess_security_on_io_cap_request(connection); 6929 // 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 6930 } 6931 6932 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6933 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6934 // set authentication requirements: 6935 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6936 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6937 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6938 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6939 authreq |= 1; 6940 } 6941 bool bonding = hci_stack->bondable; 6942 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6943 // if we have received IO Cap Response, we're in responder role 6944 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6945 if (bonding && !remote_bonding){ 6946 log_info("Remote not bonding, dropping local flag"); 6947 bonding = false; 6948 } 6949 } 6950 if (bonding){ 6951 if (connection->bonding_flags & BONDING_DEDICATED){ 6952 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6953 } else { 6954 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6955 } 6956 } 6957 uint8_t have_oob_data = 0; 6958 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6959 if (connection->classic_oob_c_192 != NULL){ 6960 have_oob_data |= 1; 6961 } 6962 if (connection->classic_oob_c_256 != NULL){ 6963 have_oob_data |= 2; 6964 } 6965 #endif 6966 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6967 return true; 6968 } 6969 6970 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6971 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6972 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6973 return true; 6974 } 6975 6976 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6977 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6978 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6979 const uint8_t zero[16] = { 0 }; 6980 const uint8_t * r_192 = zero; 6981 const uint8_t * c_192 = zero; 6982 const uint8_t * r_256 = zero; 6983 const uint8_t * c_256 = zero; 6984 // verify P-256 OOB 6985 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6986 c_256 = connection->classic_oob_c_256; 6987 if (connection->classic_oob_r_256 != NULL) { 6988 r_256 = connection->classic_oob_r_256; 6989 } 6990 } 6991 // verify P-192 OOB 6992 if ((connection->classic_oob_c_192 != NULL)) { 6993 c_192 = connection->classic_oob_c_192; 6994 if (connection->classic_oob_r_192 != NULL) { 6995 r_192 = connection->classic_oob_r_192; 6996 } 6997 } 6998 6999 // assess security 7000 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7001 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7002 if (need_level_4 && !can_reach_level_4){ 7003 log_info("Level 4 required, but not possible -> abort"); 7004 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7005 // send oob negative reply 7006 c_256 = NULL; 7007 c_192 = NULL; 7008 } 7009 7010 // Reply 7011 if (c_256 != zero) { 7012 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7013 } else if (c_192 != zero){ 7014 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7015 } else { 7016 hci_stack->classic_oob_con_handle = connection->con_handle; 7017 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7018 } 7019 return true; 7020 } 7021 #endif 7022 7023 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7024 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7025 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7026 return true; 7027 } 7028 7029 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7030 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7031 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7032 return true; 7033 } 7034 7035 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7036 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7037 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7038 return true; 7039 } 7040 7041 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7042 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7043 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7044 connection->state = SENT_DISCONNECT; 7045 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7046 return true; 7047 } 7048 7049 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7050 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7051 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7052 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7053 return true; 7054 } 7055 7056 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7057 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7058 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7059 return true; 7060 } 7061 7062 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7063 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7064 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7065 return true; 7066 } 7067 7068 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7069 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7070 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7071 return true; 7072 } 7073 7074 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7075 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7076 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7077 return true; 7078 } 7079 7080 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7081 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7082 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7083 return true; 7084 } 7085 #endif 7086 7087 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7088 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7089 #ifdef ENABLE_CLASSIC 7090 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7091 #endif 7092 if (connection->state != SENT_DISCONNECT){ 7093 connection->state = SENT_DISCONNECT; 7094 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7095 return true; 7096 } 7097 } 7098 7099 #ifdef ENABLE_CLASSIC 7100 uint16_t sniff_min_interval; 7101 switch (connection->sniff_min_interval){ 7102 case 0: 7103 break; 7104 case 0xffff: 7105 connection->sniff_min_interval = 0; 7106 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7107 return true; 7108 default: 7109 sniff_min_interval = connection->sniff_min_interval; 7110 connection->sniff_min_interval = 0; 7111 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7112 return true; 7113 } 7114 7115 if (connection->sniff_subrating_max_latency != 0xffff){ 7116 uint16_t max_latency = connection->sniff_subrating_max_latency; 7117 connection->sniff_subrating_max_latency = 0; 7118 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7119 return true; 7120 } 7121 7122 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7123 uint8_t service_type = (uint8_t) connection->qos_service_type; 7124 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7125 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); 7126 return true; 7127 } 7128 7129 if (connection->request_role != HCI_ROLE_INVALID){ 7130 hci_role_t role = connection->request_role; 7131 connection->request_role = HCI_ROLE_INVALID; 7132 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7133 return true; 7134 } 7135 #endif 7136 7137 if (connection->gap_connection_tasks != 0){ 7138 #ifdef ENABLE_CLASSIC 7139 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7140 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7141 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7142 return true; 7143 } 7144 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7145 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7146 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7147 return true; 7148 } 7149 #endif 7150 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7151 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7152 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7153 return true; 7154 } 7155 #ifdef ENABLE_BLE 7156 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7157 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7158 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7159 return true; 7160 } 7161 #endif 7162 } 7163 7164 #ifdef ENABLE_BLE 7165 switch (connection->le_con_parameter_update_state){ 7166 // response to L2CAP CON PARAMETER UPDATE REQUEST 7167 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7168 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7169 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7170 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7171 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7172 return true; 7173 case CON_PARAMETER_UPDATE_REPLY: 7174 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7175 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7176 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7177 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7178 return true; 7179 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7180 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7181 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7182 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7183 return true; 7184 default: 7185 break; 7186 } 7187 if (connection->le_phy_update_all_phys != 0xffu){ 7188 uint8_t all_phys = connection->le_phy_update_all_phys; 7189 connection->le_phy_update_all_phys = 0xff; 7190 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); 7191 return true; 7192 } 7193 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7194 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7195 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7196 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7197 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7198 return true; 7199 } 7200 #endif 7201 #endif 7202 } 7203 return false; 7204 } 7205 7206 static void hci_run(void){ 7207 7208 // stack state sub statemachines 7209 switch (hci_stack->state) { 7210 case HCI_STATE_INITIALIZING: 7211 hci_initializing_run(); 7212 break; 7213 case HCI_STATE_HALTING: 7214 hci_halting_run(); 7215 break; 7216 case HCI_STATE_FALLING_ASLEEP: 7217 hci_falling_asleep_run(); 7218 break; 7219 default: 7220 break; 7221 } 7222 7223 // allow to run after initialization to working transition 7224 if (hci_stack->state != HCI_STATE_WORKING){ 7225 return; 7226 } 7227 7228 bool done; 7229 7230 // send continuation fragments first, as they block the prepared packet buffer 7231 done = hci_run_acl_fragments(); 7232 if (done) return; 7233 7234 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7235 done = hci_run_iso_fragments(); 7236 if (done) return; 7237 #endif 7238 7239 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7240 // send host num completed packets next as they don't require num_cmd_packets > 0 7241 if (!hci_can_send_comand_packet_transport()) return; 7242 if (hci_stack->host_completed_packets){ 7243 hci_host_num_completed_packets(); 7244 return; 7245 } 7246 #endif 7247 7248 if (!hci_can_send_command_packet_now()) return; 7249 7250 // global/non-connection oriented commands 7251 7252 7253 #ifdef ENABLE_CLASSIC 7254 // general gap classic 7255 done = hci_run_general_gap_classic(); 7256 if (done) return; 7257 #endif 7258 7259 #ifdef ENABLE_BLE 7260 // general gap le 7261 done = hci_run_general_gap_le(); 7262 if (done) return; 7263 7264 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7265 // ISO related tasks, e.g. BIG create/terminate/sync 7266 done = hci_run_iso_tasks(); 7267 if (done) return; 7268 #endif 7269 #endif 7270 7271 // send pending HCI commands 7272 hci_run_general_pending_commands(); 7273 } 7274 7275 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7276 // house-keeping 7277 7278 #ifdef ENABLE_CLASSIC 7279 bd_addr_t addr; 7280 hci_connection_t * conn; 7281 #endif 7282 #ifdef ENABLE_LE_CENTRAL 7283 uint8_t initiator_filter_policy; 7284 #endif 7285 7286 uint16_t opcode = little_endian_read_16(packet, 0); 7287 switch (opcode) { 7288 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7289 hci_stack->loopback_mode = packet[3]; 7290 break; 7291 7292 #ifdef ENABLE_CLASSIC 7293 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7294 reverse_bd_addr(&packet[3], addr); 7295 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7296 7297 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7298 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7299 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7300 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7301 } 7302 7303 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7304 if (!conn) { 7305 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7306 if (!conn) { 7307 // notify client that alloc failed 7308 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7309 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7310 } 7311 conn->state = SEND_CREATE_CONNECTION; 7312 } 7313 7314 log_info("conn state %u", conn->state); 7315 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7316 switch (conn->state) { 7317 // if connection active exists 7318 case OPEN: 7319 // and OPEN, emit connection complete command 7320 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7321 // packet not sent to controller 7322 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7323 case RECEIVED_DISCONNECTION_COMPLETE: 7324 // create connection triggered in disconnect complete event, let's do it now 7325 break; 7326 case SEND_CREATE_CONNECTION: 7327 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7328 if (hci_classic_operation_active()){ 7329 return ERROR_CODE_SUCCESS; 7330 } 7331 #endif 7332 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7333 break; 7334 default: 7335 // otherwise, just ignore as it is already in the open process 7336 // packet not sent to controller 7337 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7338 } 7339 conn->state = SENT_CREATE_CONNECTION; 7340 7341 // track outgoing connection 7342 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7343 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7344 break; 7345 7346 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7347 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7348 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7349 if (conn == NULL) { 7350 // neither SCO nor ACL connection for con handle 7351 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7352 } else { 7353 switch (conn->address_type){ 7354 case BD_ADDR_TYPE_ACL: 7355 // assert SCO connection does not exit 7356 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7357 return ERROR_CODE_COMMAND_DISALLOWED; 7358 } 7359 // allocate connection struct 7360 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7361 HCI_ROLE_MASTER); 7362 if (!conn) { 7363 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7364 } 7365 break; 7366 case BD_ADDR_TYPE_SCO: 7367 // update of existing SCO connection 7368 break; 7369 default: 7370 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7371 } 7372 } 7373 7374 // conn refers to hci connection of type sco now 7375 7376 conn->state = SENT_CREATE_CONNECTION; 7377 7378 // track outgoing connection to handle command status with error 7379 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7380 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7381 7382 // setup_synchronous_connection? Voice setting at offset 22 7383 // TODO: compare to current setting if sco connection already active 7384 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7385 break; 7386 7387 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7388 // get SCO connection 7389 reverse_bd_addr(&packet[3], addr); 7390 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7391 if (conn == NULL){ 7392 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7393 } 7394 7395 conn->state = ACCEPTED_CONNECTION_REQUEST; 7396 7397 // track outgoing connection to handle command status with error 7398 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7399 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7400 7401 // accept_synchronous_connection? Voice setting at offset 18 7402 // TODO: compare to current setting if sco connection already active 7403 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7404 break; 7405 #endif 7406 #endif 7407 7408 #ifdef ENABLE_BLE 7409 #ifdef ENABLE_LE_CENTRAL 7410 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7411 // white list used? 7412 initiator_filter_policy = packet[7]; 7413 switch (initiator_filter_policy) { 7414 case 0: 7415 // whitelist not used 7416 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7417 break; 7418 case 1: 7419 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7420 break; 7421 default: 7422 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7423 break; 7424 } 7425 // track outgoing connection 7426 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7427 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7428 break; 7429 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7430 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7431 // white list used? 7432 initiator_filter_policy = packet[3]; 7433 switch (initiator_filter_policy) { 7434 case 0: 7435 // whitelist not used 7436 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7437 break; 7438 case 1: 7439 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7440 break; 7441 default: 7442 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7443 break; 7444 } 7445 // track outgoing connection 7446 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7447 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7448 break; 7449 #endif 7450 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7451 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7452 break; 7453 #endif 7454 #endif /* ENABLE_BLE */ 7455 default: 7456 break; 7457 } 7458 7459 hci_stack->num_cmd_packets--; 7460 7461 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7462 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7463 if (err != 0){ 7464 return ERROR_CODE_HARDWARE_FAILURE; 7465 } 7466 return ERROR_CODE_SUCCESS; 7467 } 7468 7469 // disconnect because of security block 7470 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7471 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7472 if (!connection) return; 7473 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7474 } 7475 7476 7477 // Configure Secure Simple Pairing 7478 7479 #ifdef ENABLE_CLASSIC 7480 7481 // enable will enable SSP during init 7482 void gap_ssp_set_enable(int enable){ 7483 hci_stack->ssp_enable = enable; 7484 } 7485 7486 static int hci_local_ssp_activated(void){ 7487 return gap_ssp_supported() && hci_stack->ssp_enable; 7488 } 7489 7490 // if set, BTstack will respond to io capability request using authentication requirement 7491 void gap_ssp_set_io_capability(int io_capability){ 7492 hci_stack->ssp_io_capability = io_capability; 7493 } 7494 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7495 hci_stack->ssp_authentication_requirement = authentication_requirement; 7496 } 7497 7498 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7499 void gap_ssp_set_auto_accept(int auto_accept){ 7500 hci_stack->ssp_auto_accept = auto_accept; 7501 } 7502 7503 void gap_secure_connections_enable(bool enable){ 7504 hci_stack->secure_connections_enable = enable; 7505 } 7506 bool gap_secure_connections_active(void){ 7507 return hci_stack->secure_connections_active; 7508 } 7509 7510 #endif 7511 7512 // va_list part of hci_send_cmd 7513 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7514 if (!hci_can_send_command_packet_now()){ 7515 log_error("hci_send_cmd called but cannot send packet now"); 7516 return ERROR_CODE_COMMAND_DISALLOWED; 7517 } 7518 7519 // for HCI INITIALIZATION 7520 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7521 hci_stack->last_cmd_opcode = cmd->opcode; 7522 7523 hci_reserve_packet_buffer(); 7524 uint8_t * packet = hci_stack->hci_packet_buffer; 7525 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7526 uint8_t status = hci_send_cmd_packet(packet, size); 7527 7528 // release packet buffer on error or for synchronous transport implementations 7529 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7530 hci_release_packet_buffer(); 7531 hci_emit_transport_packet_sent(); 7532 } 7533 7534 return status; 7535 } 7536 7537 /** 7538 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7539 */ 7540 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7541 va_list argptr; 7542 va_start(argptr, cmd); 7543 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7544 va_end(argptr); 7545 return status; 7546 } 7547 7548 // Create various non-HCI events. 7549 // TODO: generalize, use table similar to hci_create_command 7550 7551 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7552 // dump packet 7553 if (dump) { 7554 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7555 } 7556 7557 // dispatch to all event handlers 7558 btstack_linked_list_iterator_t it; 7559 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7560 while (btstack_linked_list_iterator_has_next(&it)){ 7561 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7562 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7563 } 7564 } 7565 7566 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7567 if (!hci_stack->acl_packet_handler) return; 7568 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7569 } 7570 7571 #ifdef ENABLE_CLASSIC 7572 static void hci_notify_if_sco_can_send_now(void){ 7573 // notify SCO sender if waiting 7574 if (!hci_stack->sco_waiting_for_can_send_now) return; 7575 if (hci_can_send_sco_packet_now()){ 7576 hci_stack->sco_waiting_for_can_send_now = 0; 7577 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7578 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7579 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7580 } 7581 } 7582 7583 // parsing end emitting has been merged to reduce code size 7584 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7585 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7586 7587 uint8_t * eir_data; 7588 ad_context_t context; 7589 const uint8_t * name; 7590 uint8_t name_len; 7591 7592 if (size < 3) return; 7593 7594 int event_type = hci_event_packet_get_type(packet); 7595 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7596 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7597 7598 switch (event_type){ 7599 case HCI_EVENT_INQUIRY_RESULT: 7600 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7601 if (size != (3 + (num_responses * 14))) return; 7602 break; 7603 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7604 if (size != 257) return; 7605 if (num_responses != 1) return; 7606 break; 7607 default: 7608 return; 7609 } 7610 7611 // event[1] is set at the end 7612 int i; 7613 for (i=0; i<num_responses;i++){ 7614 memset(event, 0, sizeof(event)); 7615 event[0] = GAP_EVENT_INQUIRY_RESULT; 7616 uint8_t event_size = 27; // if name is not set by EIR 7617 7618 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7619 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7620 (void)memcpy(&event[9], 7621 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7622 3); // class of device 7623 (void)memcpy(&event[12], 7624 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7625 2); // clock offset 7626 7627 switch (event_type){ 7628 case HCI_EVENT_INQUIRY_RESULT: 7629 // 14,15,16,17 = 0, size 18 7630 break; 7631 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7632 event[14] = 1; 7633 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7634 // 16,17 = 0, size 18 7635 break; 7636 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7637 event[14] = 1; 7638 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7639 // EIR packets only contain a single inquiry response 7640 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7641 name = NULL; 7642 // Iterate over EIR data 7643 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7644 uint8_t data_type = ad_iterator_get_data_type(&context); 7645 uint8_t data_size = ad_iterator_get_data_len(&context); 7646 const uint8_t * data = ad_iterator_get_data(&context); 7647 // Prefer Complete Local Name over Shortened Local Name 7648 switch (data_type){ 7649 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7650 if (name) continue; 7651 /* fall through */ 7652 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7653 name = data; 7654 name_len = data_size; 7655 break; 7656 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7657 if (data_size != 8) break; 7658 event[16] = 1; 7659 memcpy(&event[17], data, 8); 7660 break; 7661 default: 7662 break; 7663 } 7664 } 7665 if (name){ 7666 event[25] = 1; 7667 // truncate name if needed 7668 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7669 event[26] = len; 7670 (void)memcpy(&event[27], name, len); 7671 event_size += len; 7672 } 7673 break; 7674 default: 7675 return; 7676 } 7677 event[1] = event_size - 2; 7678 hci_emit_event(event, event_size, 1); 7679 } 7680 } 7681 #endif 7682 7683 void hci_emit_state(void){ 7684 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7685 uint8_t event[3]; 7686 event[0] = BTSTACK_EVENT_STATE; 7687 event[1] = sizeof(event) - 2u; 7688 event[2] = hci_stack->state; 7689 hci_emit_event(event, sizeof(event), 1); 7690 } 7691 7692 #ifdef ENABLE_CLASSIC 7693 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7694 uint8_t event[13]; 7695 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7696 event[1] = sizeof(event) - 2; 7697 event[2] = status; 7698 little_endian_store_16(event, 3, con_handle); 7699 reverse_bd_addr(address, &event[5]); 7700 event[11] = 1; // ACL connection 7701 event[12] = 0; // encryption disabled 7702 hci_emit_event(event, sizeof(event), 1); 7703 } 7704 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7705 if (disable_l2cap_timeouts) return; 7706 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7707 uint8_t event[4]; 7708 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7709 event[1] = sizeof(event) - 2; 7710 little_endian_store_16(event, 2, conn->con_handle); 7711 hci_emit_event(event, sizeof(event), 1); 7712 } 7713 #endif 7714 7715 #ifdef ENABLE_BLE 7716 #ifdef ENABLE_LE_CENTRAL 7717 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){ 7718 uint8_t event[21]; 7719 event[0] = HCI_EVENT_LE_META; 7720 event[1] = sizeof(event) - 2u; 7721 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7722 event[3] = status; 7723 little_endian_store_16(event, 4, con_handle); 7724 event[6] = 0; // TODO: role 7725 event[7] = address_type; 7726 reverse_bd_addr(address, &event[8]); 7727 little_endian_store_16(event, 14, 0); // interval 7728 little_endian_store_16(event, 16, 0); // latency 7729 little_endian_store_16(event, 18, 0); // supervision timeout 7730 event[20] = 0; // master clock accuracy 7731 hci_emit_event(event, sizeof(event), 1); 7732 } 7733 #endif 7734 #endif 7735 7736 static void hci_emit_transport_packet_sent(void){ 7737 // notify upper stack that it might be possible to send again 7738 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7739 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7740 } 7741 7742 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7743 uint8_t event[6]; 7744 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7745 event[1] = sizeof(event) - 2u; 7746 event[2] = 0; // status = OK 7747 little_endian_store_16(event, 3, con_handle); 7748 event[5] = reason; 7749 hci_emit_event(event, sizeof(event), 1); 7750 } 7751 7752 static void hci_emit_nr_connections_changed(void){ 7753 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7754 uint8_t event[3]; 7755 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7756 event[1] = sizeof(event) - 2u; 7757 event[2] = nr_hci_connections(); 7758 hci_emit_event(event, sizeof(event), 1); 7759 } 7760 7761 static void hci_emit_hci_open_failed(void){ 7762 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7763 uint8_t event[2]; 7764 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7765 event[1] = sizeof(event) - 2u; 7766 hci_emit_event(event, sizeof(event), 1); 7767 } 7768 7769 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7770 log_info("hci_emit_dedicated_bonding_result %u ", status); 7771 uint8_t event[9]; 7772 int pos = 0; 7773 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7774 event[pos++] = sizeof(event) - 2u; 7775 event[pos++] = status; 7776 reverse_bd_addr(address, &event[pos]); 7777 hci_emit_event(event, sizeof(event), 1); 7778 } 7779 7780 7781 #ifdef ENABLE_CLASSIC 7782 7783 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7784 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7785 uint8_t event[5]; 7786 int pos = 0; 7787 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7788 event[pos++] = sizeof(event) - 2; 7789 little_endian_store_16(event, 2, con_handle); 7790 pos += 2; 7791 event[pos++] = level; 7792 hci_emit_event(event, sizeof(event), 1); 7793 } 7794 7795 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7796 if (!connection) return LEVEL_0; 7797 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7798 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7799 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7800 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7801 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7802 // LEVEL 4 always requires 128 bit encrytion key size 7803 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7804 security_level = LEVEL_3; 7805 } 7806 return security_level; 7807 } 7808 7809 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7810 uint8_t event[4]; 7811 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7812 event[1] = sizeof(event) - 2; 7813 event[2] = discoverable; 7814 event[3] = connectable; 7815 hci_emit_event(event, sizeof(event), 1); 7816 } 7817 7818 // query if remote side supports eSCO 7819 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7820 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7821 if (!connection) return false; 7822 return (connection->remote_supported_features[0] & 1) != 0; 7823 } 7824 7825 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 7826 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7827 if (!connection) return 0; 7828 return connection->remote_supported_sco_packets; 7829 } 7830 7831 static bool hci_ssp_supported(hci_connection_t * connection){ 7832 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7833 return (connection->bonding_flags & mask) == mask; 7834 } 7835 7836 // query if remote side supports SSP 7837 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7838 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7839 if (!connection) return false; 7840 return hci_ssp_supported(connection) ? 1 : 0; 7841 } 7842 7843 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7844 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7845 } 7846 7847 /** 7848 * Check if remote supported features query has completed 7849 */ 7850 bool hci_remote_features_available(hci_con_handle_t handle){ 7851 hci_connection_t * connection = hci_connection_for_handle(handle); 7852 if (!connection) return false; 7853 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7854 } 7855 7856 /** 7857 * Trigger remote supported features query 7858 */ 7859 7860 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7861 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7862 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7863 } 7864 } 7865 7866 void hci_remote_features_query(hci_con_handle_t con_handle){ 7867 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7868 if (!connection) return; 7869 hci_trigger_remote_features_for_connection(connection); 7870 hci_run(); 7871 } 7872 7873 // GAP API 7874 /** 7875 * @bbrief enable/disable bonding. default is enabled 7876 * @praram enabled 7877 */ 7878 void gap_set_bondable_mode(int enable){ 7879 hci_stack->bondable = enable ? 1 : 0; 7880 } 7881 /** 7882 * @brief Get bondable mode. 7883 * @return 1 if bondable 7884 */ 7885 int gap_get_bondable_mode(void){ 7886 return hci_stack->bondable; 7887 } 7888 7889 /** 7890 * @brief map link keys to security levels 7891 */ 7892 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7893 switch (link_key_type){ 7894 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7895 return LEVEL_4; 7896 case COMBINATION_KEY: 7897 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7898 return LEVEL_3; 7899 default: 7900 return LEVEL_2; 7901 } 7902 } 7903 7904 /** 7905 * @brief map link keys to secure connection yes/no 7906 */ 7907 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7908 switch (link_key_type){ 7909 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7910 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7911 return true; 7912 default: 7913 return false; 7914 } 7915 } 7916 7917 /** 7918 * @brief map link keys to authenticated 7919 */ 7920 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7921 switch (link_key_type){ 7922 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7923 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7924 return true; 7925 default: 7926 return false; 7927 } 7928 } 7929 7930 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7931 log_info("gap_mitm_protection_required_for_security_level %u", level); 7932 return level > LEVEL_2; 7933 } 7934 7935 /** 7936 * @brief get current security level 7937 */ 7938 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7939 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7940 if (!connection) return LEVEL_0; 7941 return gap_security_level_for_connection(connection); 7942 } 7943 7944 /** 7945 * @brief request connection to device to 7946 * @result GAP_AUTHENTICATION_RESULT 7947 */ 7948 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7949 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7950 if (!connection){ 7951 hci_emit_security_level(con_handle, LEVEL_0); 7952 return; 7953 } 7954 7955 btstack_assert(hci_is_le_connection(connection) == false); 7956 7957 // 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) 7958 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7959 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7960 requested_level = LEVEL_4; 7961 } 7962 7963 gap_security_level_t current_level = gap_security_level(con_handle); 7964 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7965 requested_level, connection->requested_security_level, current_level); 7966 7967 // authentication active if authentication request was sent or planned level > 0 7968 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7969 if (authentication_active){ 7970 // authentication already active 7971 if (connection->requested_security_level < requested_level){ 7972 // increase requested level as new level is higher 7973 // TODO: handle re-authentication when done 7974 connection->requested_security_level = requested_level; 7975 } 7976 } else { 7977 // no request active, notify if security sufficient 7978 if (requested_level <= current_level){ 7979 hci_emit_security_level(con_handle, current_level); 7980 return; 7981 } 7982 7983 // store request 7984 connection->requested_security_level = requested_level; 7985 7986 // start to authenticate connection 7987 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7988 7989 // request remote features if not already active, also trigger hci_run 7990 hci_remote_features_query(con_handle); 7991 } 7992 } 7993 7994 /** 7995 * @brief start dedicated bonding with device. disconnect after bonding 7996 * @param device 7997 * @param request MITM protection 7998 * @result GAP_DEDICATED_BONDING_COMPLETE 7999 */ 8000 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8001 8002 // create connection state machine 8003 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8004 8005 if (!connection){ 8006 return BTSTACK_MEMORY_ALLOC_FAILED; 8007 } 8008 8009 // delete link key 8010 gap_drop_link_key_for_bd_addr(device); 8011 8012 // configure LEVEL_2/3, dedicated bonding 8013 connection->state = SEND_CREATE_CONNECTION; 8014 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8015 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8016 connection->bonding_flags = BONDING_DEDICATED; 8017 8018 hci_run(); 8019 8020 return 0; 8021 } 8022 8023 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8024 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8025 if (connection == NULL){ 8026 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8027 } 8028 if (defer){ 8029 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8030 } else { 8031 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8032 // trigger disconnect 8033 hci_run(); 8034 } 8035 return ERROR_CODE_SUCCESS; 8036 } 8037 8038 void gap_set_local_name(const char * local_name){ 8039 hci_stack->local_name = local_name; 8040 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8041 // also update EIR if not set by user 8042 if (hci_stack->eir_data == NULL){ 8043 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8044 } 8045 hci_run(); 8046 } 8047 #endif 8048 8049 8050 #ifdef ENABLE_BLE 8051 8052 #ifdef ENABLE_LE_CENTRAL 8053 void gap_start_scan(void){ 8054 hci_stack->le_scanning_enabled = true; 8055 hci_run(); 8056 } 8057 8058 void gap_stop_scan(void){ 8059 hci_stack->le_scanning_enabled = false; 8060 hci_run(); 8061 } 8062 8063 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8064 hci_stack->le_scan_type = scan_type; 8065 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8066 hci_stack->le_scan_interval = scan_interval; 8067 hci_stack->le_scan_window = scan_window; 8068 hci_stack->le_scanning_param_update = true; 8069 hci_run(); 8070 } 8071 8072 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8073 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8074 } 8075 8076 void gap_set_scan_duplicate_filter(bool enabled){ 8077 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8078 } 8079 8080 void gap_set_scan_phys(uint8_t phys){ 8081 // LE Coded and LE 1M PHY 8082 hci_stack->le_scan_phys = phys & 0x05; 8083 } 8084 8085 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8086 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8087 if (!conn){ 8088 // disallow if le connection is already outgoing 8089 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8090 log_error("le connection already active"); 8091 return ERROR_CODE_COMMAND_DISALLOWED; 8092 } 8093 8094 log_info("gap_connect: no connection exists yet, creating context"); 8095 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8096 if (!conn){ 8097 // notify client that alloc failed 8098 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8099 log_info("gap_connect: failed to alloc hci_connection_t"); 8100 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8101 } 8102 8103 // set le connecting state 8104 if (hci_is_le_connection_type(addr_type)){ 8105 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8106 } 8107 8108 conn->state = SEND_CREATE_CONNECTION; 8109 log_info("gap_connect: send create connection next"); 8110 hci_run(); 8111 return ERROR_CODE_SUCCESS; 8112 } 8113 8114 if (!hci_is_le_connection(conn) || 8115 (conn->state == SEND_CREATE_CONNECTION) || 8116 (conn->state == SENT_CREATE_CONNECTION)) { 8117 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8118 log_error("gap_connect: classic connection or connect is already being created"); 8119 return GATT_CLIENT_IN_WRONG_STATE; 8120 } 8121 8122 // check if connection was just disconnected 8123 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8124 log_info("gap_connect: send create connection (again)"); 8125 conn->state = SEND_CREATE_CONNECTION; 8126 hci_run(); 8127 return ERROR_CODE_SUCCESS; 8128 } 8129 8130 log_info("gap_connect: context exists with state %u", conn->state); 8131 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8132 hci_run(); 8133 return ERROR_CODE_SUCCESS; 8134 } 8135 8136 // @assumption: only a single outgoing LE Connection exists 8137 static hci_connection_t * gap_get_outgoing_connection(void){ 8138 btstack_linked_item_t *it; 8139 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8140 hci_connection_t * conn = (hci_connection_t *) it; 8141 if (!hci_is_le_connection(conn)) continue; 8142 switch (conn->state){ 8143 case SEND_CREATE_CONNECTION: 8144 case SENT_CREATE_CONNECTION: 8145 return conn; 8146 default: 8147 break; 8148 }; 8149 } 8150 return NULL; 8151 } 8152 8153 uint8_t gap_connect_cancel(void){ 8154 hci_connection_t * conn; 8155 switch (hci_stack->le_connecting_request){ 8156 case LE_CONNECTING_IDLE: 8157 break; 8158 case LE_CONNECTING_WHITELIST: 8159 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8160 hci_run(); 8161 break; 8162 case LE_CONNECTING_DIRECT: 8163 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8164 conn = gap_get_outgoing_connection(); 8165 if (conn == NULL){ 8166 hci_run(); 8167 } else { 8168 switch (conn->state){ 8169 case SEND_CREATE_CONNECTION: 8170 // skip sending create connection and emit event instead 8171 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8172 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8173 btstack_memory_hci_connection_free( conn ); 8174 break; 8175 case SENT_CREATE_CONNECTION: 8176 // let hci_run_general_gap_le cancel outgoing connection 8177 hci_run(); 8178 break; 8179 default: 8180 break; 8181 } 8182 } 8183 break; 8184 default: 8185 btstack_unreachable(); 8186 break; 8187 } 8188 return ERROR_CODE_SUCCESS; 8189 } 8190 8191 /** 8192 * @brief Set connection parameters for outgoing connections 8193 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8194 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8195 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8196 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8197 * @param conn_latency, default: 4 8198 * @param supervision_timeout (unit: 10ms), default: 720 ms 8199 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8200 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8201 */ 8202 8203 void gap_set_connection_phys(uint8_t phys){ 8204 // LE Coded, LE 1M, LE 2M PHY 8205 hci_stack->le_connection_phys = phys & 7; 8206 } 8207 8208 #endif 8209 8210 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8211 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8212 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8213 hci_stack->le_connection_scan_interval = conn_scan_interval; 8214 hci_stack->le_connection_scan_window = conn_scan_window; 8215 hci_stack->le_connection_interval_min = conn_interval_min; 8216 hci_stack->le_connection_interval_max = conn_interval_max; 8217 hci_stack->le_connection_latency = conn_latency; 8218 hci_stack->le_supervision_timeout = supervision_timeout; 8219 hci_stack->le_minimum_ce_length = min_ce_length; 8220 hci_stack->le_maximum_ce_length = max_ce_length; 8221 } 8222 8223 /** 8224 * @brief Updates the connection parameters for a given LE connection 8225 * @param handle 8226 * @param conn_interval_min (unit: 1.25ms) 8227 * @param conn_interval_max (unit: 1.25ms) 8228 * @param conn_latency 8229 * @param supervision_timeout (unit: 10ms) 8230 * @return 0 if ok 8231 */ 8232 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8233 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8234 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8235 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8236 connection->le_conn_interval_min = conn_interval_min; 8237 connection->le_conn_interval_max = conn_interval_max; 8238 connection->le_conn_latency = conn_latency; 8239 connection->le_supervision_timeout = supervision_timeout; 8240 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8241 hci_run(); 8242 return 0; 8243 } 8244 8245 /** 8246 * @brief Request an update of the connection parameter for a given LE connection 8247 * @param handle 8248 * @param conn_interval_min (unit: 1.25ms) 8249 * @param conn_interval_max (unit: 1.25ms) 8250 * @param conn_latency 8251 * @param supervision_timeout (unit: 10ms) 8252 * @return 0 if ok 8253 */ 8254 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8255 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8256 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8257 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8258 connection->le_conn_interval_min = conn_interval_min; 8259 connection->le_conn_interval_max = conn_interval_max; 8260 connection->le_conn_latency = conn_latency; 8261 connection->le_supervision_timeout = supervision_timeout; 8262 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8263 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8264 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8265 return 0; 8266 } 8267 8268 #ifdef ENABLE_LE_PERIPHERAL 8269 8270 /** 8271 * @brief Set Advertisement Data 8272 * @param advertising_data_length 8273 * @param advertising_data (max 31 octets) 8274 * @note data is not copied, pointer has to stay valid 8275 */ 8276 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8277 hci_stack->le_advertisements_data_len = advertising_data_length; 8278 hci_stack->le_advertisements_data = advertising_data; 8279 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8280 hci_run(); 8281 } 8282 8283 /** 8284 * @brief Set Scan Response Data 8285 * @param advertising_data_length 8286 * @param advertising_data (max 31 octets) 8287 * @note data is not copied, pointer has to stay valid 8288 */ 8289 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8290 hci_stack->le_scan_response_data_len = scan_response_data_length; 8291 hci_stack->le_scan_response_data = scan_response_data; 8292 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8293 hci_run(); 8294 } 8295 8296 /** 8297 * @brief Set Advertisement Parameters 8298 * @param adv_int_min 8299 * @param adv_int_max 8300 * @param adv_type 8301 * @param direct_address_type 8302 * @param direct_address 8303 * @param channel_map 8304 * @param filter_policy 8305 * 8306 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8307 */ 8308 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8309 uint8_t direct_address_typ, bd_addr_t direct_address, 8310 uint8_t channel_map, uint8_t filter_policy) { 8311 8312 hci_stack->le_advertisements_interval_min = adv_int_min; 8313 hci_stack->le_advertisements_interval_max = adv_int_max; 8314 hci_stack->le_advertisements_type = adv_type; 8315 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8316 hci_stack->le_advertisements_channel_map = channel_map; 8317 hci_stack->le_advertisements_filter_policy = filter_policy; 8318 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8319 6); 8320 8321 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8322 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8323 hci_run(); 8324 } 8325 8326 /** 8327 * @brief Enable/Disable Advertisements 8328 * @param enabled 8329 */ 8330 void gap_advertisements_enable(int enabled){ 8331 if (enabled == 0){ 8332 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8333 } else { 8334 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8335 } 8336 hci_update_advertisements_enabled_for_current_roles(); 8337 hci_run(); 8338 } 8339 8340 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8341 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8342 btstack_linked_list_iterator_t it; 8343 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8344 while (btstack_linked_list_iterator_has_next(&it)){ 8345 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8346 if ( item->advertising_handle == advertising_handle ) { 8347 return item; 8348 } 8349 } 8350 return NULL; 8351 } 8352 8353 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8354 // find free advertisement handle 8355 uint8_t advertisement_handle; 8356 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8357 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8358 } 8359 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8360 // clear 8361 memset(storage, 0, sizeof(le_advertising_set_t)); 8362 // copy params 8363 storage->advertising_handle = advertisement_handle; 8364 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8365 // add to list 8366 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8367 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8368 *out_advertising_handle = advertisement_handle; 8369 // set tasks and start 8370 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8371 hci_run(); 8372 return ERROR_CODE_SUCCESS; 8373 } 8374 8375 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8376 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8377 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8378 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8379 // set tasks and start 8380 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8381 hci_run(); 8382 return ERROR_CODE_SUCCESS; 8383 } 8384 8385 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8386 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8387 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8388 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8389 return ERROR_CODE_SUCCESS; 8390 } 8391 8392 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8393 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8394 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8395 memcpy(advertising_set->random_address, random_address, 6); 8396 // set tasks and start 8397 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8398 hci_run(); 8399 return ERROR_CODE_SUCCESS; 8400 } 8401 8402 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8403 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8404 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8405 advertising_set->adv_data = advertising_data; 8406 advertising_set->adv_data_len = advertising_data_length; 8407 // set tasks and start 8408 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8409 hci_run(); 8410 return ERROR_CODE_SUCCESS; 8411 } 8412 8413 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){ 8414 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8415 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8416 advertising_set->scan_data = scan_response_data; 8417 advertising_set->scan_data_len = scan_response_data_length; 8418 // set tasks and start 8419 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8420 hci_run(); 8421 return ERROR_CODE_SUCCESS; 8422 } 8423 8424 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8425 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8426 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8427 advertising_set->enable_timeout = timeout; 8428 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8429 // set tasks and start 8430 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8431 hci_run(); 8432 return ERROR_CODE_SUCCESS; 8433 } 8434 8435 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8436 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8437 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8438 // set tasks and start 8439 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8440 hci_run(); 8441 return ERROR_CODE_SUCCESS; 8442 } 8443 8444 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8445 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8446 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8447 // set tasks and start 8448 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8449 hci_run(); 8450 return ERROR_CODE_SUCCESS; 8451 } 8452 8453 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8454 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8455 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8456 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8457 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8458 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8459 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8460 // set tasks and start 8461 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8462 hci_run(); 8463 return ERROR_CODE_SUCCESS; 8464 } 8465 8466 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8467 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8468 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8469 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8470 return ERROR_CODE_SUCCESS; 8471 } 8472 8473 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8474 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8475 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8476 advertising_set->periodic_data = periodic_data; 8477 advertising_set->periodic_data_len = periodic_data_length; 8478 // set tasks and start 8479 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8480 hci_run(); 8481 return ERROR_CODE_SUCCESS; 8482 } 8483 8484 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8485 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8486 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8487 // set tasks and start 8488 advertising_set->periodic_include_adi = include_adi; 8489 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8490 hci_run(); 8491 return ERROR_CODE_SUCCESS; 8492 } 8493 8494 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8495 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8496 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8497 // set tasks and start 8498 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8499 hci_run(); 8500 return ERROR_CODE_SUCCESS; 8501 } 8502 8503 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8504 hci_stack->le_past_mode = mode; 8505 hci_stack->le_past_skip = skip; 8506 hci_stack->le_past_sync_timeout = sync_timeout; 8507 hci_stack->le_past_cte_type = cte_type; 8508 hci_stack->le_past_set_default_params = true; 8509 hci_run(); 8510 return ERROR_CODE_SUCCESS; 8511 } 8512 8513 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8514 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8515 if (hci_connection == NULL){ 8516 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8517 } 8518 hci_connection->le_past_sync_handle = sync_handle; 8519 hci_connection->le_past_service_data = service_data; 8520 hci_run(); 8521 return ERROR_CODE_SUCCESS; 8522 } 8523 8524 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8525 8526 #endif 8527 8528 #endif 8529 8530 void hci_le_set_own_address_type(uint8_t own_address_type){ 8531 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8532 if (own_address_type == hci_stack->le_own_addr_type) return; 8533 hci_stack->le_own_addr_type = own_address_type; 8534 8535 #ifdef ENABLE_LE_PERIPHERAL 8536 // update advertisement parameters, too 8537 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8538 hci_run(); 8539 #endif 8540 #ifdef ENABLE_LE_CENTRAL 8541 // note: we don't update scan parameters or modify ongoing connection attempts 8542 #endif 8543 } 8544 8545 void hci_le_random_address_set(const bd_addr_t random_address){ 8546 memcpy(hci_stack->le_random_address, random_address, 6); 8547 hci_stack->le_random_address_set = true; 8548 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8549 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8550 if (hci_extended_advertising_supported()){ 8551 // force advertising set creation for LE Set Advertising Set Random Address 8552 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8553 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8554 } 8555 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8556 } 8557 #endif 8558 hci_run(); 8559 } 8560 8561 #endif 8562 8563 uint8_t gap_disconnect(hci_con_handle_t handle){ 8564 hci_connection_t * conn = hci_connection_for_handle(handle); 8565 if (!conn){ 8566 hci_emit_disconnection_complete(handle, 0); 8567 return 0; 8568 } 8569 // ignore if already disconnected 8570 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8571 return 0; 8572 } 8573 conn->state = SEND_DISCONNECT; 8574 hci_run(); 8575 return 0; 8576 } 8577 8578 int gap_read_rssi(hci_con_handle_t con_handle){ 8579 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8580 if (hci_connection == NULL) return 0; 8581 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8582 hci_run(); 8583 return 1; 8584 } 8585 8586 /** 8587 * @brief Get connection type 8588 * @param con_handle 8589 * @result connection_type 8590 */ 8591 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8592 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8593 if (!conn) return GAP_CONNECTION_INVALID; 8594 switch (conn->address_type){ 8595 case BD_ADDR_TYPE_LE_PUBLIC: 8596 case BD_ADDR_TYPE_LE_RANDOM: 8597 return GAP_CONNECTION_LE; 8598 case BD_ADDR_TYPE_SCO: 8599 return GAP_CONNECTION_SCO; 8600 case BD_ADDR_TYPE_ACL: 8601 return GAP_CONNECTION_ACL; 8602 default: 8603 return GAP_CONNECTION_INVALID; 8604 } 8605 } 8606 8607 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8608 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8609 if (!conn) return HCI_ROLE_INVALID; 8610 return (hci_role_t) conn->role; 8611 } 8612 8613 8614 #ifdef ENABLE_CLASSIC 8615 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8616 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8617 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8618 conn->request_role = role; 8619 hci_run(); 8620 return ERROR_CODE_SUCCESS; 8621 } 8622 #endif 8623 8624 #ifdef ENABLE_BLE 8625 8626 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){ 8627 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8628 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8629 8630 conn->le_phy_update_all_phys = all_phys; 8631 conn->le_phy_update_tx_phys = tx_phys; 8632 conn->le_phy_update_rx_phys = rx_phys; 8633 conn->le_phy_update_phy_options = phy_options; 8634 8635 hci_run(); 8636 8637 return 0; 8638 } 8639 8640 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8641 // check if already in list 8642 btstack_linked_list_iterator_t it; 8643 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8644 while (btstack_linked_list_iterator_has_next(&it)) { 8645 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8646 if (entry->address_type != address_type) { 8647 continue; 8648 } 8649 if (memcmp(entry->address, address, 6) != 0) { 8650 continue; 8651 } 8652 8653 // if already on controller: 8654 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8655 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8656 // drop remove request 8657 entry->state = LE_WHITELIST_ON_CONTROLLER; 8658 return ERROR_CODE_SUCCESS; 8659 } else { 8660 // disallow as already on controller 8661 return ERROR_CODE_COMMAND_DISALLOWED; 8662 } 8663 } 8664 8665 // assume scheduled to add 8666 return ERROR_CODE_COMMAND_DISALLOWED; 8667 } 8668 8669 // alloc and add to list 8670 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8671 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8672 entry->address_type = address_type; 8673 (void)memcpy(entry->address, address, 6); 8674 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8675 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8676 return ERROR_CODE_SUCCESS; 8677 } 8678 8679 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8680 btstack_linked_list_iterator_t it; 8681 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8682 while (btstack_linked_list_iterator_has_next(&it)){ 8683 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8684 if (entry->address_type != address_type) { 8685 continue; 8686 } 8687 if (memcmp(entry->address, address, 6) != 0) { 8688 continue; 8689 } 8690 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8691 // remove from controller if already present 8692 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8693 } else { 8694 // directly remove entry from whitelist 8695 btstack_linked_list_iterator_remove(&it); 8696 btstack_memory_whitelist_entry_free(entry); 8697 } 8698 return ERROR_CODE_SUCCESS; 8699 } 8700 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8701 } 8702 8703 static void hci_whitelist_clear(void){ 8704 btstack_linked_list_iterator_t it; 8705 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8706 while (btstack_linked_list_iterator_has_next(&it)){ 8707 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8708 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8709 // remove from controller if already present 8710 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8711 continue; 8712 } 8713 // directly remove entry from whitelist 8714 btstack_linked_list_iterator_remove(&it); 8715 btstack_memory_whitelist_entry_free(entry); 8716 } 8717 } 8718 8719 /** 8720 * @brief Clear Whitelist 8721 * @return 0 if ok 8722 */ 8723 uint8_t gap_whitelist_clear(void){ 8724 hci_whitelist_clear(); 8725 hci_run(); 8726 return ERROR_CODE_SUCCESS; 8727 } 8728 8729 /** 8730 * @brief Add Device to Whitelist 8731 * @param address_typ 8732 * @param address 8733 * @return 0 if ok 8734 */ 8735 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8736 uint8_t status = hci_whitelist_add(address_type, address); 8737 if (status){ 8738 return status; 8739 } 8740 hci_run(); 8741 return ERROR_CODE_SUCCESS; 8742 } 8743 8744 /** 8745 * @brief Remove Device from Whitelist 8746 * @param address_typ 8747 * @param address 8748 * @return 0 if ok 8749 */ 8750 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8751 uint8_t status = hci_whitelist_remove(address_type, address); 8752 if (status){ 8753 return status; 8754 } 8755 hci_run(); 8756 return ERROR_CODE_SUCCESS; 8757 } 8758 8759 #ifdef ENABLE_LE_CENTRAL 8760 /** 8761 * @brief Connect with Whitelist 8762 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8763 * @return - if ok 8764 */ 8765 uint8_t gap_connect_with_whitelist(void){ 8766 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8767 return ERROR_CODE_COMMAND_DISALLOWED; 8768 } 8769 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8770 hci_run(); 8771 return ERROR_CODE_SUCCESS; 8772 } 8773 8774 /** 8775 * @brief Auto Connection Establishment - Start Connecting to device 8776 * @param address_typ 8777 * @param address 8778 * @return 0 if ok 8779 */ 8780 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8781 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8782 return ERROR_CODE_COMMAND_DISALLOWED; 8783 } 8784 8785 uint8_t status = hci_whitelist_add(address_type, address); 8786 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8787 return status; 8788 } 8789 8790 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8791 8792 hci_run(); 8793 return ERROR_CODE_SUCCESS; 8794 } 8795 8796 /** 8797 * @brief Auto Connection Establishment - Stop Connecting to device 8798 * @param address_typ 8799 * @param address 8800 * @return 0 if ok 8801 */ 8802 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8803 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8804 return ERROR_CODE_COMMAND_DISALLOWED; 8805 } 8806 8807 hci_whitelist_remove(address_type, address); 8808 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8809 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8810 } 8811 hci_run(); 8812 return 0; 8813 } 8814 8815 /** 8816 * @brief Auto Connection Establishment - Stop everything 8817 * @note Convenience function to stop all active auto connection attempts 8818 */ 8819 uint8_t gap_auto_connection_stop_all(void){ 8820 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8821 return ERROR_CODE_COMMAND_DISALLOWED; 8822 } 8823 hci_whitelist_clear(); 8824 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8825 hci_run(); 8826 return ERROR_CODE_SUCCESS; 8827 } 8828 8829 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8830 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8831 if (!conn) return 0; 8832 return conn->le_connection_interval; 8833 } 8834 #endif 8835 #endif 8836 8837 #ifdef ENABLE_CLASSIC 8838 /** 8839 * @brief Set Extended Inquiry Response data 8840 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8841 * @note has to be done before stack starts up 8842 */ 8843 void gap_set_extended_inquiry_response(const uint8_t * data){ 8844 hci_stack->eir_data = data; 8845 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8846 hci_run(); 8847 } 8848 8849 /** 8850 * @brief Start GAP Classic Inquiry 8851 * @param duration in 1.28s units 8852 * @return 0 if ok 8853 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8854 */ 8855 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8856 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8857 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8858 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8859 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8860 } 8861 hci_stack->inquiry_state = duration_in_1280ms_units; 8862 hci_stack->inquiry_max_period_length = 0; 8863 hci_stack->inquiry_min_period_length = 0; 8864 hci_run(); 8865 return 0; 8866 } 8867 8868 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8869 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8870 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8871 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8872 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8873 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8874 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8875 8876 hci_stack->inquiry_state = duration; 8877 hci_stack->inquiry_max_period_length = max_period_length; 8878 hci_stack->inquiry_min_period_length = min_period_length; 8879 hci_run(); 8880 return 0; 8881 } 8882 8883 /** 8884 * @brief Stop GAP Classic Inquiry 8885 * @return 0 if ok 8886 */ 8887 int gap_inquiry_stop(void){ 8888 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8889 // emit inquiry complete event, before it even started 8890 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8891 hci_emit_event(event, sizeof(event), 1); 8892 return 0; 8893 } 8894 switch (hci_stack->inquiry_state){ 8895 case GAP_INQUIRY_STATE_ACTIVE: 8896 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8897 hci_run(); 8898 return ERROR_CODE_SUCCESS; 8899 case GAP_INQUIRY_STATE_PERIODIC: 8900 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8901 hci_run(); 8902 return ERROR_CODE_SUCCESS; 8903 default: 8904 return ERROR_CODE_COMMAND_DISALLOWED; 8905 } 8906 } 8907 8908 void gap_inquiry_set_lap(uint32_t lap){ 8909 hci_stack->inquiry_lap = lap; 8910 } 8911 8912 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8913 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8914 hci_stack->inquiry_scan_window = inquiry_scan_window; 8915 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8916 hci_run(); 8917 } 8918 8919 8920 /** 8921 * @brief Remote Name Request 8922 * @param addr 8923 * @param page_scan_repetition_mode 8924 * @param clock_offset only used when bit 15 is set 8925 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8926 */ 8927 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8928 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8929 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8930 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8931 hci_stack->remote_name_clock_offset = clock_offset; 8932 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8933 hci_run(); 8934 return 0; 8935 } 8936 8937 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8938 hci_stack->gap_pairing_state = state; 8939 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8940 hci_run(); 8941 return 0; 8942 } 8943 8944 /** 8945 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8946 * @param addr 8947 * @param pin_data 8948 * @param pin_len 8949 * @return 0 if ok 8950 */ 8951 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8952 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8953 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8954 hci_stack->gap_pairing_pin_len = pin_len; 8955 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8956 } 8957 8958 /** 8959 * @brief Legacy Pairing Pin Code Response 8960 * @param addr 8961 * @param pin 8962 * @return 0 if ok 8963 */ 8964 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8965 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8966 } 8967 8968 /** 8969 * @brief Abort Legacy Pairing 8970 * @param addr 8971 * @param pin 8972 * @return 0 if ok 8973 */ 8974 int gap_pin_code_negative(bd_addr_t addr){ 8975 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8976 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8977 } 8978 8979 /** 8980 * @brief SSP Passkey Response 8981 * @param addr 8982 * @param passkey 8983 * @return 0 if ok 8984 */ 8985 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8986 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8987 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8988 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8989 } 8990 8991 /** 8992 * @brief Abort SSP Passkey Entry/Pairing 8993 * @param addr 8994 * @param pin 8995 * @return 0 if ok 8996 */ 8997 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8998 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8999 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9000 } 9001 9002 /** 9003 * @brief Accept SSP Numeric Comparison 9004 * @param addr 9005 * @param passkey 9006 * @return 0 if ok 9007 */ 9008 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9009 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9010 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9011 } 9012 9013 /** 9014 * @brief Abort SSP Numeric Comparison/Pairing 9015 * @param addr 9016 * @param pin 9017 * @return 0 if ok 9018 */ 9019 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9020 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9021 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9022 } 9023 9024 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9025 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9026 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9027 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9028 connectionSetAuthenticationFlags(conn, flag); 9029 hci_run(); 9030 return ERROR_CODE_SUCCESS; 9031 } 9032 #endif 9033 9034 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9035 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9036 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9037 } 9038 9039 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9040 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9041 } 9042 #endif 9043 9044 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9045 /** 9046 * @brief Report Remote OOB Data 9047 * @param bd_addr 9048 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9049 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9050 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9051 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9052 */ 9053 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){ 9054 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9055 if (connection == NULL) { 9056 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9057 } 9058 connection->classic_oob_c_192 = c_192; 9059 connection->classic_oob_r_192 = r_192; 9060 9061 // ignore P-256 if not supported by us 9062 if (hci_stack->secure_connections_active){ 9063 connection->classic_oob_c_256 = c_256; 9064 connection->classic_oob_r_256 = r_256; 9065 } 9066 9067 return ERROR_CODE_SUCCESS; 9068 } 9069 /** 9070 * @brief Generate new OOB data 9071 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9072 */ 9073 void gap_ssp_generate_oob_data(void){ 9074 hci_stack->classic_read_local_oob_data = true; 9075 hci_run(); 9076 } 9077 9078 #endif 9079 9080 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9081 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9082 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9083 if (connection == NULL) { 9084 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9085 } 9086 9087 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9088 connection->link_key_type = type; 9089 9090 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9091 } 9092 9093 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9094 /** 9095 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9096 * @param inquiry_mode see bluetooth_defines.h 9097 */ 9098 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9099 hci_stack->inquiry_mode = inquiry_mode; 9100 } 9101 9102 /** 9103 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9104 */ 9105 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9106 hci_stack->sco_voice_setting = voice_setting; 9107 } 9108 9109 /** 9110 * @brief Get SCO Voice Setting 9111 * @return current voice setting 9112 */ 9113 uint16_t hci_get_sco_voice_setting(void){ 9114 return hci_stack->sco_voice_setting; 9115 } 9116 9117 static int hci_have_usb_transport(void){ 9118 if (!hci_stack->hci_transport) return 0; 9119 const char * transport_name = hci_stack->hci_transport->name; 9120 if (!transport_name) return 0; 9121 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9122 } 9123 9124 /** @brief Get SCO packet length for current SCO Voice setting 9125 * @note Using SCO packets of the exact length is required for USB transfer 9126 * @return Length of SCO packets in bytes (not audio frames) 9127 */ 9128 uint16_t hci_get_sco_packet_length(void){ 9129 uint16_t sco_packet_length = 0; 9130 9131 #ifdef ENABLE_SCO_OVER_HCI 9132 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9133 int multiplier; 9134 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9135 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9136 multiplier = 2; 9137 } else { 9138 multiplier = 1; 9139 } 9140 9141 9142 if (hci_have_usb_transport()){ 9143 // see Core Spec for H2 USB Transfer. 9144 // 3 byte SCO header + 24 bytes per connection 9145 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 9146 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 9147 } else { 9148 // 3 byte SCO header + SCO packet size over the air (60 bytes) 9149 sco_packet_length = 3 + 60 * multiplier; 9150 // assert that it still fits inside an SCO buffer 9151 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9152 sco_packet_length = 3 + 60; 9153 } 9154 } 9155 #endif 9156 9157 #ifdef HAVE_SCO_TRANSPORT 9158 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9159 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9160 sco_packet_length = 3 + 60 * multiplier; 9161 #endif 9162 return sco_packet_length; 9163 } 9164 9165 /** 9166 * @brief Sets the master/slave policy 9167 * @param policy (0: attempt to become master, 1: let connecting device decide) 9168 */ 9169 void hci_set_master_slave_policy(uint8_t policy){ 9170 hci_stack->master_slave_policy = policy; 9171 } 9172 9173 #endif 9174 9175 HCI_STATE hci_get_state(void){ 9176 return hci_stack->state; 9177 } 9178 9179 #ifdef ENABLE_CLASSIC 9180 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9181 hci_stack->gap_classic_accept_callback = accept_callback; 9182 } 9183 #endif 9184 9185 /** 9186 * @brief Set callback for Bluetooth Hardware Error 9187 */ 9188 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9189 hci_stack->hardware_error_callback = fn; 9190 } 9191 9192 void hci_disconnect_all(void){ 9193 btstack_linked_list_iterator_t it; 9194 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9195 while (btstack_linked_list_iterator_has_next(&it)){ 9196 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9197 if (con->state == SENT_DISCONNECT) continue; 9198 con->state = SEND_DISCONNECT; 9199 } 9200 hci_run(); 9201 } 9202 9203 uint16_t hci_get_manufacturer(void){ 9204 return hci_stack->manufacturer; 9205 } 9206 9207 #ifdef ENABLE_BLE 9208 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9209 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9210 if (!hci_con) return NULL; 9211 return &hci_con->sm_connection; 9212 } 9213 9214 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9215 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9216 #endif 9217 9218 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9219 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9220 if (hci_connection == NULL) return 0; 9221 if (hci_is_le_connection(hci_connection)){ 9222 #ifdef ENABLE_BLE 9223 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9224 if (sm_conn->sm_connection_encrypted) { 9225 return sm_conn->sm_actual_encryption_key_size; 9226 } 9227 #endif 9228 } else { 9229 #ifdef ENABLE_CLASSIC 9230 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9231 return hci_connection->encryption_key_size; 9232 } 9233 #endif 9234 } 9235 return 0; 9236 } 9237 9238 bool gap_authenticated(hci_con_handle_t con_handle){ 9239 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9240 if (hci_connection == NULL) return false; 9241 9242 switch (hci_connection->address_type){ 9243 #ifdef ENABLE_BLE 9244 case BD_ADDR_TYPE_LE_PUBLIC: 9245 case BD_ADDR_TYPE_LE_RANDOM: 9246 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9247 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9248 #endif 9249 #ifdef ENABLE_CLASSIC 9250 case BD_ADDR_TYPE_SCO: 9251 case BD_ADDR_TYPE_ACL: 9252 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9253 #endif 9254 default: 9255 return false; 9256 } 9257 } 9258 9259 bool gap_secure_connection(hci_con_handle_t con_handle){ 9260 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9261 if (hci_connection == NULL) return 0; 9262 9263 switch (hci_connection->address_type){ 9264 #ifdef ENABLE_BLE 9265 case BD_ADDR_TYPE_LE_PUBLIC: 9266 case BD_ADDR_TYPE_LE_RANDOM: 9267 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9268 return hci_connection->sm_connection.sm_connection_sc != 0; 9269 #endif 9270 #ifdef ENABLE_CLASSIC 9271 case BD_ADDR_TYPE_SCO: 9272 case BD_ADDR_TYPE_ACL: 9273 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9274 #endif 9275 default: 9276 return false; 9277 } 9278 } 9279 9280 bool gap_bonded(hci_con_handle_t con_handle){ 9281 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9282 if (hci_connection == NULL) return 0; 9283 9284 #ifdef ENABLE_CLASSIC 9285 link_key_t link_key; 9286 link_key_type_t link_key_type; 9287 #endif 9288 switch (hci_connection->address_type){ 9289 #ifdef ENABLE_BLE 9290 case BD_ADDR_TYPE_LE_PUBLIC: 9291 case BD_ADDR_TYPE_LE_RANDOM: 9292 return hci_connection->sm_connection.sm_le_db_index >= 0; 9293 #endif 9294 #ifdef ENABLE_CLASSIC 9295 case BD_ADDR_TYPE_SCO: 9296 case BD_ADDR_TYPE_ACL: 9297 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9298 #endif 9299 default: 9300 return false; 9301 } 9302 } 9303 9304 #ifdef ENABLE_BLE 9305 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9306 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9307 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9308 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9309 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9310 return sm_conn->sm_connection_authorization_state; 9311 } 9312 #endif 9313 9314 #ifdef ENABLE_CLASSIC 9315 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){ 9316 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9317 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9318 conn->sniff_min_interval = sniff_min_interval; 9319 conn->sniff_max_interval = sniff_max_interval; 9320 conn->sniff_attempt = sniff_attempt; 9321 conn->sniff_timeout = sniff_timeout; 9322 hci_run(); 9323 return 0; 9324 } 9325 9326 /** 9327 * @brief Exit Sniff mode 9328 * @param con_handle 9329 @ @return 0 if ok 9330 */ 9331 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9332 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9333 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9334 conn->sniff_min_interval = 0xffff; 9335 hci_run(); 9336 return 0; 9337 } 9338 9339 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){ 9340 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9341 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9342 conn->sniff_subrating_max_latency = max_latency; 9343 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9344 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9345 hci_run(); 9346 return ERROR_CODE_SUCCESS; 9347 } 9348 9349 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){ 9350 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9351 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9352 conn->qos_service_type = service_type; 9353 conn->qos_token_rate = token_rate; 9354 conn->qos_peak_bandwidth = peak_bandwidth; 9355 conn->qos_latency = latency; 9356 conn->qos_delay_variation = delay_variation; 9357 hci_run(); 9358 return ERROR_CODE_SUCCESS; 9359 } 9360 9361 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9362 hci_stack->new_page_scan_interval = page_scan_interval; 9363 hci_stack->new_page_scan_window = page_scan_window; 9364 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9365 hci_run(); 9366 } 9367 9368 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9369 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9370 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9371 hci_run(); 9372 } 9373 9374 void gap_set_page_timeout(uint16_t page_timeout){ 9375 hci_stack->page_timeout = page_timeout; 9376 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9377 hci_run(); 9378 } 9379 9380 #endif 9381 9382 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9383 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9384 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9385 if (le_device_db_index >= le_device_db_max_count()) return; 9386 uint8_t offset = le_device_db_index >> 3; 9387 uint8_t mask = 1 << (le_device_db_index & 7); 9388 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9389 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9390 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9391 // note: go back to remove entries, otherwise, a remove + add will skip the add 9392 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9393 } 9394 } 9395 9396 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9397 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9398 if (le_device_db_index >= le_device_db_max_count()) return; 9399 uint8_t offset = le_device_db_index >> 3; 9400 uint8_t mask = 1 << (le_device_db_index & 7); 9401 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9402 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9403 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9404 } 9405 } 9406 9407 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9408 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9409 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9410 } 9411 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9412 // restart le resolving list update 9413 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9414 } 9415 return ERROR_CODE_SUCCESS; 9416 } 9417 9418 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9419 hci_stack->le_privacy_mode = privacy_mode; 9420 } 9421 #endif 9422 9423 #ifdef ENABLE_BLE 9424 #ifdef ENABLE_LE_CENTRAL 9425 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9426 9427 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9428 // check if already in list 9429 btstack_linked_list_iterator_t it; 9430 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9431 while (btstack_linked_list_iterator_has_next(&it)) { 9432 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9433 if (entry->sid != advertising_sid) { 9434 continue; 9435 } 9436 if (entry->address_type != address_type) { 9437 continue; 9438 } 9439 if (memcmp(entry->address, address, 6) != 0) { 9440 continue; 9441 } 9442 // disallow if already scheduled to add 9443 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9444 return ERROR_CODE_COMMAND_DISALLOWED; 9445 } 9446 // still on controller, but scheduled to remove -> re-add 9447 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9448 return ERROR_CODE_SUCCESS; 9449 } 9450 // alloc and add to list 9451 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9452 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9453 entry->sid = advertising_sid; 9454 entry->address_type = address_type; 9455 (void)memcpy(entry->address, address, 6); 9456 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9457 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9458 return ERROR_CODE_SUCCESS; 9459 } 9460 9461 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9462 btstack_linked_list_iterator_t it; 9463 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9464 while (btstack_linked_list_iterator_has_next(&it)){ 9465 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9466 if (entry->sid != advertising_sid) { 9467 continue; 9468 } 9469 if (entry->address_type != address_type) { 9470 continue; 9471 } 9472 if (memcmp(entry->address, address, 6) != 0) { 9473 continue; 9474 } 9475 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9476 // remove from controller if already present 9477 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9478 } else { 9479 // directly remove entry from whitelist 9480 btstack_linked_list_iterator_remove(&it); 9481 btstack_memory_periodic_advertiser_list_entry_free(entry); 9482 } 9483 return ERROR_CODE_SUCCESS; 9484 } 9485 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9486 } 9487 9488 static void hci_periodic_advertiser_list_clear(void){ 9489 btstack_linked_list_iterator_t it; 9490 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9491 while (btstack_linked_list_iterator_has_next(&it)){ 9492 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9493 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9494 // remove from controller if already present 9495 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9496 continue; 9497 } 9498 // directly remove entry from whitelist 9499 btstack_linked_list_iterator_remove(&it); 9500 btstack_memory_periodic_advertiser_list_entry_free(entry); 9501 } 9502 } 9503 9504 uint8_t gap_periodic_advertiser_list_clear(void){ 9505 hci_periodic_advertiser_list_clear(); 9506 hci_run(); 9507 return ERROR_CODE_SUCCESS; 9508 } 9509 9510 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9511 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9512 if (status){ 9513 return status; 9514 } 9515 hci_run(); 9516 return ERROR_CODE_SUCCESS; 9517 } 9518 9519 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9520 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9521 if (status){ 9522 return status; 9523 } 9524 hci_run(); 9525 return ERROR_CODE_SUCCESS; 9526 } 9527 9528 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9529 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9530 // abort if already active 9531 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9532 return ERROR_CODE_COMMAND_DISALLOWED; 9533 } 9534 // store request 9535 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9536 hci_stack->le_periodic_sync_options = options; 9537 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9538 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9539 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9540 hci_stack->le_periodic_sync_skip = skip; 9541 hci_stack->le_periodic_sync_timeout = sync_timeout; 9542 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9543 9544 hci_run(); 9545 return ERROR_CODE_SUCCESS; 9546 } 9547 9548 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9549 // abort if not requested 9550 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9551 return ERROR_CODE_COMMAND_DISALLOWED; 9552 } 9553 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9554 hci_run(); 9555 return ERROR_CODE_SUCCESS; 9556 } 9557 9558 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9559 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9560 return ERROR_CODE_COMMAND_DISALLOWED; 9561 } 9562 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9563 hci_run(); 9564 return ERROR_CODE_SUCCESS; 9565 } 9566 9567 #endif 9568 #endif 9569 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9570 static hci_iso_stream_t * 9571 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9572 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9573 if (iso_stream != NULL){ 9574 iso_stream->iso_type = iso_type; 9575 iso_stream->state = state; 9576 iso_stream->group_id = group_id; 9577 iso_stream->stream_id = stream_id; 9578 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9579 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9580 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9581 } 9582 return iso_stream; 9583 } 9584 9585 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9586 btstack_linked_list_iterator_t it; 9587 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9588 while (btstack_linked_list_iterator_has_next(&it)){ 9589 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9590 if (iso_stream->cis_handle == con_handle ) { 9591 return iso_stream; 9592 } 9593 } 9594 return NULL; 9595 } 9596 9597 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9598 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9599 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9600 btstack_memory_hci_iso_stream_free(iso_stream); 9601 } 9602 9603 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9604 btstack_linked_list_iterator_t it; 9605 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9606 while (btstack_linked_list_iterator_has_next(&it)){ 9607 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9608 if ((iso_stream->group_id == group_id) && 9609 (iso_stream->iso_type == iso_type)){ 9610 btstack_linked_list_iterator_remove(&it); 9611 btstack_memory_hci_iso_stream_free(iso_stream); 9612 } 9613 } 9614 } 9615 9616 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9617 btstack_linked_list_iterator_t it; 9618 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9619 while (btstack_linked_list_iterator_has_next(&it)){ 9620 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9621 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9622 (iso_stream->group_id == group_id)){ 9623 btstack_linked_list_iterator_remove(&it); 9624 btstack_memory_hci_iso_stream_free(iso_stream); 9625 } 9626 } 9627 } 9628 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9629 btstack_linked_list_iterator_t it; 9630 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9631 while (btstack_linked_list_iterator_has_next(&it)){ 9632 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9633 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9634 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9635 } 9636 } 9637 } 9638 9639 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9640 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9641 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9642 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9643 return (sdu_len_offset + 2 + sdu_len) == size; 9644 } 9645 9646 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9647 if (hci_stack->iso_packet_handler == NULL) { 9648 return; 9649 } 9650 if (size < 4) { 9651 return; 9652 } 9653 9654 // parse header 9655 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9656 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9657 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9658 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9659 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9660 9661 // assert packet is complete 9662 if ((iso_data_len + 4u) != size){ 9663 return; 9664 } 9665 9666 if ((pb_flag & 0x01) == 0){ 9667 if (pb_flag == 0x02){ 9668 // The ISO_Data_Load field contains a header and a complete SDU. 9669 if (hci_iso_sdu_complete(packet, size)) { 9670 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9671 } 9672 } else { 9673 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9674 if (iso_stream == NULL){ 9675 return; 9676 } 9677 if (size > HCI_ISO_PAYLOAD_SIZE){ 9678 return; 9679 } 9680 memcpy(iso_stream->reassembly_buffer, packet, size); 9681 // fix pb_flag 9682 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9683 iso_stream->reassembly_pos = size; 9684 } 9685 } else { 9686 // iso_data_load contains continuation or last fragment of an SDU 9687 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9688 if (ts_flag != 0){ 9689 return; 9690 } 9691 // append fragment 9692 if (iso_stream == NULL){ 9693 return; 9694 } 9695 if (iso_stream->reassembly_pos == 0){ 9696 return; 9697 } 9698 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9699 // reset reassembly buffer 9700 iso_stream->reassembly_pos = 0; 9701 return; 9702 } 9703 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9704 iso_stream->reassembly_pos += iso_data_len; 9705 9706 // deliver if last fragment and SDU complete 9707 if (pb_flag == 0x03){ 9708 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9709 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9710 } 9711 iso_stream->reassembly_pos = 0; 9712 } 9713 } 9714 } 9715 9716 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9717 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9718 uint16_t pos = 0; 9719 event[pos++] = HCI_EVENT_META_GAP; 9720 event[pos++] = 4 + (2 * big->num_bis); 9721 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9722 event[pos++] = status; 9723 event[pos++] = big->big_handle; 9724 event[pos++] = big->num_bis; 9725 uint8_t i; 9726 for (i=0;i<big->num_bis;i++){ 9727 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9728 pos += 2; 9729 } 9730 hci_emit_event(event, pos, 0); 9731 } 9732 9733 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9734 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9735 uint16_t pos = 0; 9736 event[pos++] = HCI_EVENT_META_GAP; 9737 event[pos++] = 4 + (2 * cig->num_cis); 9738 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9739 event[pos++] = status; 9740 event[pos++] = cig->cig_id; 9741 event[pos++] = cig->num_cis; 9742 uint8_t i; 9743 for (i=0;i<cig->num_cis;i++){ 9744 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9745 pos += 2; 9746 } 9747 hci_emit_event(event, pos, 0); 9748 } 9749 9750 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9751 hci_con_handle_t acl_con_handle) { 9752 uint8_t event [10]; 9753 uint16_t pos = 0; 9754 event[pos++] = HCI_EVENT_META_GAP; 9755 event[pos++] = 8; 9756 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9757 event[pos++] = status; 9758 event[pos++] = cig_id; 9759 event[pos++] = cis_id; 9760 little_endian_store_16(event, pos, cis_con_handle); 9761 pos += 2; 9762 little_endian_store_16(event, pos, acl_con_handle); 9763 pos += 2; 9764 hci_emit_event(event, pos, 0); 9765 } 9766 9767 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9768 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9769 // cache data before finalizing struct 9770 uint8_t cig_id = iso_stream->group_id; 9771 uint8_t cis_id = iso_stream->stream_id; 9772 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9773 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9774 if (status != ERROR_CODE_SUCCESS){ 9775 hci_iso_stream_finalize(iso_stream); 9776 } 9777 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9778 } 9779 9780 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9781 uint8_t event [4]; 9782 uint16_t pos = 0; 9783 event[pos++] = HCI_EVENT_META_GAP; 9784 event[pos++] = 2; 9785 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9786 event[pos++] = big->big_handle; 9787 hci_emit_event(event, pos, 0); 9788 } 9789 9790 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9791 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9792 uint16_t pos = 0; 9793 event[pos++] = HCI_EVENT_META_GAP; 9794 event[pos++] = 4; 9795 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9796 event[pos++] = status; 9797 event[pos++] = big_sync->big_handle; 9798 event[pos++] = big_sync->num_bis; 9799 uint8_t i; 9800 for (i=0;i<big_sync->num_bis;i++){ 9801 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9802 pos += 2; 9803 } 9804 hci_emit_event(event, pos, 0); 9805 } 9806 9807 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9808 uint8_t event [4]; 9809 uint16_t pos = 0; 9810 event[pos++] = HCI_EVENT_META_GAP; 9811 event[pos++] = 2; 9812 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9813 event[pos++] = big_handle; 9814 hci_emit_event(event, pos, 0); 9815 } 9816 9817 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9818 uint8_t event[6]; 9819 uint16_t pos = 0; 9820 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9821 event[pos++] = sizeof(event) - 2; 9822 event[pos++] = big->big_handle; 9823 event[pos++] = bis_index; 9824 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9825 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9826 } 9827 9828 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9829 uint8_t event[4]; 9830 uint16_t pos = 0; 9831 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9832 event[pos++] = sizeof(event) - 2; 9833 little_endian_store_16(event, pos, cis_con_handle); 9834 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9835 } 9836 9837 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9838 btstack_linked_list_iterator_t it; 9839 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9840 while (btstack_linked_list_iterator_has_next(&it)){ 9841 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9842 if ( big->big_handle == big_handle ) { 9843 return big; 9844 } 9845 } 9846 return NULL; 9847 } 9848 9849 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9850 btstack_linked_list_iterator_t it; 9851 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9852 while (btstack_linked_list_iterator_has_next(&it)){ 9853 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9854 if ( big_sync->big_handle == big_handle ) { 9855 return big_sync; 9856 } 9857 } 9858 return NULL; 9859 } 9860 9861 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9862 hci_stack->iso_packets_to_queue = num_packets; 9863 } 9864 9865 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9866 btstack_linked_list_iterator_t it; 9867 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9868 while (btstack_linked_list_iterator_has_next(&it)){ 9869 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9870 if ( cig->cig_id == cig_id ) { 9871 return cig; 9872 } 9873 } 9874 return NULL; 9875 } 9876 9877 static void hci_iso_notify_can_send_now(void){ 9878 9879 // BIG 9880 9881 btstack_linked_list_iterator_t it; 9882 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9883 while (btstack_linked_list_iterator_has_next(&it)){ 9884 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9885 // track number completed packet timestamps 9886 if (big->num_completed_timestamp_current_valid){ 9887 big->num_completed_timestamp_current_valid = false; 9888 if (big->num_completed_timestamp_previous_valid){ 9889 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9890 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9891 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9892 big->num_completed_timestamp_previous_ms); 9893 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9894 // to catch up, skip packet on all BIS 9895 uint8_t i; 9896 for (i=0;i<big->num_bis;i++){ 9897 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9898 if (iso_stream){ 9899 iso_stream->num_packets_to_skip++; 9900 } 9901 } 9902 } 9903 } 9904 big->num_completed_timestamp_previous_valid = true; 9905 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9906 } 9907 9908 if (big->can_send_now_requested){ 9909 // check if no outgoing iso packets pending and no can send now have to be emitted 9910 uint8_t i; 9911 bool can_send = true; 9912 uint8_t num_iso_queued_minimum = 0; 9913 for (i=0;i<big->num_bis;i++){ 9914 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9915 if (iso_stream == NULL) continue; 9916 // handle case where individual ISO packet was sent too late: 9917 // for each additionally queued packet, a new one needs to get skipped 9918 if (i==0){ 9919 num_iso_queued_minimum = iso_stream->num_packets_sent; 9920 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9921 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9922 iso_stream->num_packets_to_skip += num_packets_to_skip; 9923 iso_stream->num_packets_sent -= num_packets_to_skip; 9924 } 9925 // check if we can send now 9926 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9927 can_send = false; 9928 break; 9929 } 9930 } 9931 if (can_send){ 9932 // propagate can send now to individual streams 9933 big->can_send_now_requested = false; 9934 for (i=0;i<big->num_bis;i++){ 9935 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9936 iso_stream->emit_ready_to_send = true; 9937 } 9938 } 9939 } 9940 } 9941 9942 if (hci_stack->hci_packet_buffer_reserved) return; 9943 9944 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9945 while (btstack_linked_list_iterator_has_next(&it)){ 9946 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9947 // report bis ready 9948 uint8_t i; 9949 for (i=0;i<big->num_bis;i++){ 9950 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9951 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9952 iso_stream->emit_ready_to_send = false; 9953 hci_emit_bis_can_send_now(big, i); 9954 break; 9955 } 9956 } 9957 } 9958 9959 // CIS 9960 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9961 while (btstack_linked_list_iterator_has_next(&it)) { 9962 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9963 if ((iso_stream->can_send_now_requested) && 9964 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9965 iso_stream->can_send_now_requested = false; 9966 hci_emit_cis_can_send_now(iso_stream->cis_handle); 9967 } 9968 } 9969 } 9970 9971 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9972 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9973 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9974 } 9975 if (big_params->num_bis == 0){ 9976 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9977 } 9978 if (big_params->num_bis > MAX_NR_BIS){ 9979 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9980 } 9981 9982 // reserve ISO Streams 9983 uint8_t i; 9984 uint8_t status = ERROR_CODE_SUCCESS; 9985 for (i=0;i<big_params->num_bis;i++){ 9986 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 9987 if (iso_stream == NULL) { 9988 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9989 break; 9990 } 9991 } 9992 9993 // free structs on error 9994 if (status != ERROR_CODE_SUCCESS){ 9995 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9996 return status; 9997 } 9998 9999 le_audio_big_t * big = storage; 10000 big->big_handle = big_params->big_handle; 10001 big->params = big_params; 10002 big->state = LE_AUDIO_BIG_STATE_CREATE; 10003 big->num_bis = big_params->num_bis; 10004 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10005 10006 hci_run(); 10007 10008 return ERROR_CODE_SUCCESS; 10009 } 10010 10011 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10012 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 10013 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10014 } 10015 if (big_sync_params->num_bis == 0){ 10016 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10017 } 10018 if (big_sync_params->num_bis > MAX_NR_BIS){ 10019 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10020 } 10021 10022 le_audio_big_sync_t * big_sync = storage; 10023 big_sync->big_handle = big_sync_params->big_handle; 10024 big_sync->params = big_sync_params; 10025 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10026 big_sync->num_bis = big_sync_params->num_bis; 10027 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10028 10029 hci_run(); 10030 10031 return ERROR_CODE_SUCCESS; 10032 } 10033 10034 uint8_t gap_big_terminate(uint8_t big_handle){ 10035 le_audio_big_t * big = hci_big_for_handle(big_handle); 10036 if (big == NULL){ 10037 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10038 } 10039 switch (big->state){ 10040 case LE_AUDIO_BIG_STATE_CREATE: 10041 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10042 hci_emit_big_terminated(big); 10043 break; 10044 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10045 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10046 break; 10047 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10048 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10049 case LE_AUDIO_BIG_STATE_ACTIVE: 10050 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10051 hci_run(); 10052 break; 10053 default: 10054 return ERROR_CODE_COMMAND_DISALLOWED; 10055 } 10056 return ERROR_CODE_SUCCESS; 10057 } 10058 10059 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10060 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10061 if (big_sync == NULL){ 10062 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10063 } 10064 switch (big_sync->state){ 10065 case LE_AUDIO_BIG_STATE_CREATE: 10066 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10067 hci_emit_big_sync_stopped(big_handle); 10068 break; 10069 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10070 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10071 break; 10072 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10073 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10074 case LE_AUDIO_BIG_STATE_ACTIVE: 10075 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10076 hci_run(); 10077 break; 10078 default: 10079 return ERROR_CODE_COMMAND_DISALLOWED; 10080 } 10081 return ERROR_CODE_SUCCESS; 10082 } 10083 10084 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10085 le_audio_big_t * big = hci_big_for_handle(big_handle); 10086 if (big == NULL){ 10087 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10088 } 10089 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10090 return ERROR_CODE_COMMAND_DISALLOWED; 10091 } 10092 big->can_send_now_requested = true; 10093 hci_iso_notify_can_send_now(); 10094 return ERROR_CODE_SUCCESS; 10095 } 10096 10097 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10098 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10099 if (iso_stream == NULL){ 10100 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10101 } 10102 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10103 return ERROR_CODE_COMMAND_DISALLOWED; 10104 } 10105 iso_stream->can_send_now_requested = true; 10106 hci_iso_notify_can_send_now(); 10107 return ERROR_CODE_SUCCESS; 10108 } 10109 10110 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10111 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10112 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10113 } 10114 if (cig_params->num_cis == 0){ 10115 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10116 } 10117 if (cig_params->num_cis > MAX_NR_BIS){ 10118 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10119 } 10120 10121 // reserve ISO Streams 10122 uint8_t i; 10123 uint8_t status = ERROR_CODE_SUCCESS; 10124 for (i=0;i<cig_params->num_cis;i++){ 10125 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10126 if (iso_stream == NULL) { 10127 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10128 break; 10129 } 10130 } 10131 10132 // free structs on error 10133 if (status != ERROR_CODE_SUCCESS){ 10134 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10135 return status; 10136 } 10137 10138 le_audio_cig_t * cig = storage; 10139 cig->cig_id = cig_params->cig_id; 10140 cig->num_cis = cig_params->num_cis; 10141 cig->params = cig_params; 10142 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10143 for (i=0;i<cig->num_cis;i++){ 10144 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10145 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10146 cig->cis_setup_active[i] = false; 10147 cig->cis_established[i] = false; 10148 } 10149 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10150 10151 hci_run(); 10152 10153 return ERROR_CODE_SUCCESS; 10154 } 10155 10156 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10157 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10158 if (cig == NULL){ 10159 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10160 } 10161 10162 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10163 return ERROR_CODE_COMMAND_DISALLOWED; 10164 } 10165 10166 // store ACL Connection Handles 10167 uint8_t i; 10168 for (i=0;i<cig->num_cis;i++){ 10169 // check that all con handles exist and store 10170 hci_con_handle_t cis_handle = cis_con_handles[i]; 10171 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10172 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10173 } 10174 uint8_t j; 10175 bool found = false; 10176 for (j=0;j<cig->num_cis;j++){ 10177 if (cig->cis_con_handles[j] == cis_handle){ 10178 cig->acl_con_handles[j] = acl_con_handles[j]; 10179 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10180 btstack_assert(iso_stream != NULL); 10181 iso_stream->acl_handle = acl_con_handles[j]; 10182 found = true; 10183 break; 10184 } 10185 } 10186 if (!found){ 10187 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10188 } 10189 } 10190 10191 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10192 hci_run(); 10193 10194 return ERROR_CODE_SUCCESS; 10195 } 10196 10197 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10198 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10199 if (iso_stream == NULL){ 10200 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10201 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10202 } 10203 10204 // set next state and continue 10205 iso_stream->state = state; 10206 hci_run(); 10207 return ERROR_CODE_SUCCESS; 10208 } 10209 10210 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10211 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10212 } 10213 10214 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10215 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10216 } 10217 10218 10219 #endif 10220 #endif /* ENABLE_BLE */ 10221 10222 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10223 void hci_setup_test_connections_fuzz(void){ 10224 hci_connection_t * conn; 10225 10226 // default address: 66:55:44:33:00:01 10227 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10228 10229 // setup Controller info 10230 hci_stack->num_cmd_packets = 255; 10231 hci_stack->acl_packets_total_num = 255; 10232 10233 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10234 addr[5] = 0x01; 10235 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10236 conn->con_handle = addr[5]; 10237 conn->state = RECEIVED_CONNECTION_REQUEST; 10238 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10239 10240 // setup incoming Classic SCO connection with con handle 0x0002 10241 addr[5] = 0x02; 10242 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10243 conn->con_handle = addr[5]; 10244 conn->state = RECEIVED_CONNECTION_REQUEST; 10245 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10246 10247 // setup ready Classic ACL connection with con handle 0x0003 10248 addr[5] = 0x03; 10249 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10250 conn->con_handle = addr[5]; 10251 conn->state = OPEN; 10252 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10253 10254 // setup ready Classic SCO connection with con handle 0x0004 10255 addr[5] = 0x04; 10256 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10257 conn->con_handle = addr[5]; 10258 conn->state = OPEN; 10259 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10260 10261 // setup ready LE ACL connection with con handle 0x005 and public address 10262 addr[5] = 0x05; 10263 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10264 conn->con_handle = addr[5]; 10265 conn->state = OPEN; 10266 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10267 conn->sm_connection.sm_connection_encrypted = 1; 10268 } 10269 10270 void hci_free_connections_fuzz(void){ 10271 btstack_linked_list_iterator_t it; 10272 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10273 while (btstack_linked_list_iterator_has_next(&it)){ 10274 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10275 btstack_linked_list_iterator_remove(&it); 10276 btstack_memory_hci_connection_free(con); 10277 } 10278 } 10279 void hci_simulate_working_fuzz(void){ 10280 hci_stack->le_scanning_param_update = false; 10281 hci_init_done(); 10282 hci_stack->num_cmd_packets = 255; 10283 } 10284 #endif 10285