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 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 97 #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." 98 #endif 99 100 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 101 #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." 102 #endif 103 104 #define HCI_CONNECTION_TIMEOUT_MS 10000 105 106 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 107 #define HCI_RESET_RESEND_TIMEOUT_MS 200 108 #endif 109 110 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 111 #ifndef GAP_INQUIRY_MAX_NAME_LEN 112 #define GAP_INQUIRY_MAX_NAME_LEN 32 113 #endif 114 115 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 116 #define GAP_INQUIRY_DURATION_MIN 0x01 117 #define GAP_INQUIRY_DURATION_MAX 0x30 118 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 119 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 120 #define GAP_INQUIRY_STATE_IDLE 0x00 121 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 122 #define GAP_INQUIRY_STATE_ACTIVE 0x81 123 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 124 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 125 #define GAP_INQUIRY_STATE_PERIODIC 0x84 126 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 127 128 // GAP Remote Name Request 129 #define GAP_REMOTE_NAME_STATE_IDLE 0 130 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 131 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 132 133 // GAP Pairing 134 #define GAP_PAIRING_STATE_IDLE 0 135 #define GAP_PAIRING_STATE_SEND_PIN 1 136 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 137 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 138 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 139 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 140 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 141 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 142 143 // 144 // compact storage of relevant supported HCI Commands. 145 // X-Macro below provides enumeration and mapping table into the supported 146 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 147 // 148 149 // format: command name, byte offset, bit nr in 64-byte supported commands 150 // currently stored in 32-bit variable 151 #define SUPPORTED_HCI_COMMANDS \ 152 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 153 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 154 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 155 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 156 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 157 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 158 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 159 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 160 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 161 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 162 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 163 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 164 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 165 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 166 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 167 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 168 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 169 170 // enumerate supported commands 171 #define X(name, offset, bit) name, 172 enum { 173 SUPPORTED_HCI_COMMANDS 174 SUPPORTED_HCI_COMMANDS_COUNT 175 }; 176 #undef X 177 178 // prototypes 179 #ifdef ENABLE_CLASSIC 180 static void hci_update_scan_enable(void); 181 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 182 static int hci_local_ssp_activated(void); 183 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 184 static bool hci_ssp_supported(hci_connection_t * connection); 185 static void hci_notify_if_sco_can_send_now(void); 186 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 187 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 188 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 189 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 190 static void hci_connection_timestamp(hci_connection_t *connection); 191 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 192 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 193 #endif 194 195 static int hci_power_control_on(void); 196 static void hci_power_control_off(void); 197 static void hci_state_reset(void); 198 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 199 static void hci_emit_transport_packet_sent(void); 200 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 201 static void hci_emit_nr_connections_changed(void); 202 static void hci_emit_hci_open_failed(void); 203 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 204 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 205 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 206 static void hci_run(void); 207 static int hci_is_le_connection(hci_connection_t * connection); 208 209 #ifdef ENABLE_CLASSIC 210 static int hci_have_usb_transport(void); 211 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 212 #endif 213 214 #ifdef ENABLE_BLE 215 static void hci_whitelist_free(void); 216 #ifdef ENABLE_LE_CENTRAL 217 // called from test/ble_client/advertising_data_parser.c 218 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 219 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 220 static hci_connection_t * gap_get_outgoing_connection(void); 221 static void hci_le_scan_stop(void); 222 static bool hci_run_general_gap_le(void); 223 #endif 224 #ifdef ENABLE_LE_PERIPHERAL 225 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 226 static void hci_periodic_advertiser_list_free(void); 227 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 228 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 229 #endif /* ENABLE_LE_PERIPHERAL */ 230 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 231 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id); 232 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 233 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 234 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 235 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 236 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 237 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 238 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 239 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 240 static void hci_iso_notify_can_send_now(void); 241 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 242 static void hci_emit_big_terminated(const le_audio_big_t * big); 243 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 244 static void hci_emit_big_sync_stopped(uint8_t big_handle); 245 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 246 static void 247 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status); 248 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 249 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 250 #endif /* ENABLE_BLE */ 251 252 // the STACK is here 253 #ifndef HAVE_MALLOC 254 static hci_stack_t hci_stack_static; 255 #endif 256 static hci_stack_t * hci_stack = NULL; 257 258 #ifdef ENABLE_CLASSIC 259 // default name 260 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 261 262 // test helper 263 static uint8_t disable_l2cap_timeouts = 0; 264 #endif 265 266 // reset connection state on create and on reconnect 267 // don't overwrite addr, con handle, role 268 static void hci_connection_init(hci_connection_t * conn){ 269 conn->authentication_flags = AUTH_FLAG_NONE; 270 conn->bonding_flags = 0; 271 conn->requested_security_level = LEVEL_0; 272 #ifdef ENABLE_CLASSIC 273 conn->request_role = HCI_ROLE_INVALID; 274 conn->sniff_subrating_max_latency = 0xffff; 275 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 276 conn->link_key_type = INVALID_LINK_KEY; 277 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 278 btstack_run_loop_set_timer_context(&conn->timeout, conn); 279 hci_connection_timestamp(conn); 280 #endif 281 conn->acl_recombination_length = 0; 282 conn->acl_recombination_pos = 0; 283 conn->num_packets_sent = 0; 284 285 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 286 #ifdef ENABLE_BLE 287 conn->le_phy_update_all_phys = 0xff; 288 #endif 289 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 290 conn->le_max_tx_octets = 27; 291 #endif 292 #ifdef ENABLE_CLASSIC_PAIRING_OOB 293 conn->classic_oob_c_192 = NULL; 294 conn->classic_oob_r_192 = NULL; 295 conn->classic_oob_c_256 = NULL; 296 conn->classic_oob_r_256 = NULL; 297 #endif 298 } 299 300 /** 301 * create connection for given address 302 * 303 * @return connection OR NULL, if no memory left 304 */ 305 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 306 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 307 308 hci_connection_t * conn = btstack_memory_hci_connection_get(); 309 if (!conn) return NULL; 310 hci_connection_init(conn); 311 312 bd_addr_copy(conn->address, addr); 313 conn->address_type = addr_type; 314 conn->con_handle = HCI_CON_HANDLE_INVALID; 315 conn->role = HCI_ROLE_INVALID; 316 317 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 318 319 return conn; 320 } 321 322 323 /** 324 * get le connection parameter range 325 * 326 * @return le connection parameter range struct 327 */ 328 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 329 *range = hci_stack->le_connection_parameter_range; 330 } 331 332 /** 333 * set le connection parameter range 334 * 335 */ 336 337 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 338 hci_stack->le_connection_parameter_range = *range; 339 } 340 341 /** 342 * @brief Test if connection parameters are inside in existing rage 343 * @param conn_interval_min (unit: 1.25ms) 344 * @param conn_interval_max (unit: 1.25ms) 345 * @param conn_latency 346 * @param supervision_timeout (unit: 10ms) 347 * @return 1 if included 348 */ 349 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){ 350 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 351 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 352 353 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 354 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 355 356 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 357 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 358 359 return 1; 360 } 361 362 /** 363 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 364 * @note: default: 1 365 * @param max_peripheral_connections 366 */ 367 #ifdef ENABLE_LE_PERIPHERAL 368 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 369 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 370 } 371 #endif 372 373 /** 374 * get hci connections iterator 375 * 376 * @return hci connections iterator 377 */ 378 379 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 380 btstack_linked_list_iterator_init(it, &hci_stack->connections); 381 } 382 383 /** 384 * get connection for a given handle 385 * 386 * @return connection OR NULL, if not found 387 */ 388 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 389 btstack_linked_list_iterator_t it; 390 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 391 while (btstack_linked_list_iterator_has_next(&it)){ 392 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 393 if ( item->con_handle == con_handle ) { 394 return item; 395 } 396 } 397 return NULL; 398 } 399 400 /** 401 * get connection for given address 402 * 403 * @return connection OR NULL, if not found 404 */ 405 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 406 btstack_linked_list_iterator_t it; 407 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 408 while (btstack_linked_list_iterator_has_next(&it)){ 409 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 410 if (connection->address_type != addr_type) continue; 411 if (memcmp(addr, connection->address, 6) != 0) continue; 412 return connection; 413 } 414 return NULL; 415 } 416 417 #ifdef ENABLE_CLASSIC 418 419 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 420 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 421 } 422 423 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 424 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 425 } 426 427 #ifdef ENABLE_SCO_OVER_HCI 428 static int hci_number_sco_connections(void){ 429 int connections = 0; 430 btstack_linked_list_iterator_t it; 431 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 432 while (btstack_linked_list_iterator_has_next(&it)){ 433 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 434 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 435 connections++; 436 } 437 return connections; 438 } 439 #endif 440 441 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 442 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 443 #ifdef HAVE_EMBEDDED_TICK 444 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 445 // connections might be timed out 446 hci_emit_l2cap_check_timeout(connection); 447 } 448 #else 449 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 450 // connections might be timed out 451 hci_emit_l2cap_check_timeout(connection); 452 } 453 #endif 454 } 455 456 static void hci_connection_timestamp(hci_connection_t *connection){ 457 #ifdef HAVE_EMBEDDED_TICK 458 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 459 #else 460 connection->timestamp = btstack_run_loop_get_time_ms(); 461 #endif 462 } 463 464 /** 465 * add authentication flags and reset timer 466 * @note: assumes classic connection 467 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 468 */ 469 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 470 bd_addr_t addr; 471 reverse_bd_addr(bd_addr, addr); 472 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 473 if (conn) { 474 connectionSetAuthenticationFlags(conn, flags); 475 hci_connection_timestamp(conn); 476 } 477 } 478 479 static bool hci_pairing_active(hci_connection_t * hci_connection){ 480 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 481 } 482 483 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 484 if (hci_pairing_active(hci_connection)) return; 485 if (ssp){ 486 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 487 } else { 488 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 489 } 490 // if we are initiator, we have sent an HCI Authenticate Request 491 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 492 493 // if we are responder, use minimal service security level as required level 494 if (!initiator){ 495 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); 496 } 497 498 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 499 500 uint8_t event[12]; 501 event[0] = GAP_EVENT_PAIRING_STARTED; 502 event[1] = 10; 503 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 504 reverse_bd_addr(hci_connection->address, &event[4]); 505 event[10] = (uint8_t) ssp; 506 event[11] = (uint8_t) initiator; 507 hci_emit_event(event, sizeof(event), 1); 508 } 509 510 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 511 hci_connection->requested_security_level = LEVEL_0; 512 if (!hci_pairing_active(hci_connection)) return; 513 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 514 #ifdef ENABLE_CLASSIC_PAIRING_OOB 515 hci_connection->classic_oob_c_192 = NULL; 516 hci_connection->classic_oob_r_192 = NULL; 517 hci_connection->classic_oob_c_256 = NULL; 518 hci_connection->classic_oob_r_256 = NULL; 519 #endif 520 log_info("pairing complete, status %02x", status); 521 522 uint8_t event[11]; 523 event[0] = GAP_EVENT_PAIRING_COMPLETE; 524 event[1] = 9; 525 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 526 reverse_bd_addr(hci_connection->address, &event[4]); 527 event[10] = status; 528 hci_emit_event(event, sizeof(event), 1); 529 530 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 531 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 532 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 533 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 534 hci_connection->bonding_status = status; 535 } 536 } 537 538 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 539 hci_connection_t * conn = hci_connection_for_handle(handle); 540 if (!conn) return false; 541 return hci_pairing_active(conn); 542 } 543 544 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 545 if (!hci_stack->link_key_db) return; 546 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 547 hci_stack->link_key_db->delete_link_key(addr); 548 } 549 550 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 551 if (!hci_stack->link_key_db) return; 552 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 553 hci_stack->link_key_db->put_link_key(addr, link_key, type); 554 } 555 556 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 557 if (!hci_stack->link_key_db) return false; 558 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 559 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 560 return result; 561 } 562 563 void gap_delete_all_link_keys(void){ 564 bd_addr_t addr; 565 link_key_t link_key; 566 link_key_type_t type; 567 btstack_link_key_iterator_t it; 568 int ok = gap_link_key_iterator_init(&it); 569 if (!ok) { 570 log_error("could not initialize iterator"); 571 return; 572 } 573 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 574 gap_drop_link_key_for_bd_addr(addr); 575 } 576 gap_link_key_iterator_done(&it); 577 } 578 579 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 580 if (!hci_stack->link_key_db) return 0; 581 if (!hci_stack->link_key_db->iterator_init) return 0; 582 return hci_stack->link_key_db->iterator_init(it); 583 } 584 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){ 585 if (!hci_stack->link_key_db) return 0; 586 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 587 } 588 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 589 if (!hci_stack->link_key_db) return; 590 hci_stack->link_key_db->iterator_done(it); 591 } 592 #endif 593 594 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 595 switch (address_type){ 596 case BD_ADDR_TYPE_LE_PUBLIC: 597 case BD_ADDR_TYPE_LE_RANDOM: 598 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 599 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 600 return true; 601 default: 602 return false; 603 } 604 } 605 606 static int hci_is_le_connection(hci_connection_t * connection){ 607 return hci_is_le_connection_type(connection->address_type); 608 } 609 610 /** 611 * count connections 612 */ 613 static int nr_hci_connections(void){ 614 int count = 0; 615 btstack_linked_item_t *it; 616 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 617 count++; 618 } 619 return count; 620 } 621 622 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 623 624 unsigned int num_packets_sent_classic = 0; 625 unsigned int num_packets_sent_le = 0; 626 627 btstack_linked_item_t *it; 628 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 629 hci_connection_t * connection = (hci_connection_t *) it; 630 if (hci_is_le_connection(connection)){ 631 num_packets_sent_le += connection->num_packets_sent; 632 } 633 if (connection->address_type == BD_ADDR_TYPE_ACL){ 634 num_packets_sent_classic += connection->num_packets_sent; 635 } 636 } 637 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 638 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 639 int free_slots_le = 0; 640 641 if (free_slots_classic < 0){ 642 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); 643 return 0; 644 } 645 646 if (hci_stack->le_acl_packets_total_num){ 647 // if we have LE slots, they are used 648 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 649 if (free_slots_le < 0){ 650 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); 651 return 0; 652 } 653 } else { 654 // otherwise, classic slots are used for LE, too 655 free_slots_classic -= num_packets_sent_le; 656 if (free_slots_classic < 0){ 657 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); 658 return 0; 659 } 660 } 661 662 switch (address_type){ 663 case BD_ADDR_TYPE_UNKNOWN: 664 log_error("hci_number_free_acl_slots: unknown address type"); 665 return 0; 666 667 case BD_ADDR_TYPE_ACL: 668 return (uint16_t) free_slots_classic; 669 670 default: 671 if (hci_stack->le_acl_packets_total_num > 0){ 672 return (uint16_t) free_slots_le; 673 } 674 return (uint16_t) free_slots_classic; 675 } 676 } 677 678 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 679 // get connection type 680 hci_connection_t * connection = hci_connection_for_handle(con_handle); 681 if (!connection){ 682 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 683 return 0; 684 } 685 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 686 } 687 688 #ifdef ENABLE_CLASSIC 689 static int hci_number_free_sco_slots(void){ 690 unsigned int num_sco_packets_sent = 0; 691 btstack_linked_item_t *it; 692 if (hci_stack->synchronous_flow_control_enabled){ 693 // explicit flow control 694 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 695 hci_connection_t * connection = (hci_connection_t *) it; 696 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 697 num_sco_packets_sent += connection->num_packets_sent; 698 } 699 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 700 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 701 return 0; 702 } 703 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 704 } else { 705 // implicit flow control -- TODO 706 int num_ready = 0; 707 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 708 hci_connection_t * connection = (hci_connection_t *) it; 709 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 710 if (connection->sco_tx_ready == 0) continue; 711 num_ready++; 712 } 713 return num_ready; 714 } 715 } 716 #endif 717 718 // only used to send HCI Host Number Completed Packets 719 static int hci_can_send_comand_packet_transport(void){ 720 if (hci_stack->hci_packet_buffer_reserved) return 0; 721 722 // check for async hci transport implementations 723 if (hci_stack->hci_transport->can_send_packet_now){ 724 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 725 return 0; 726 } 727 } 728 return 1; 729 } 730 731 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 732 bool hci_can_send_command_packet_now(void){ 733 if (hci_can_send_comand_packet_transport() == 0) return false; 734 return hci_stack->num_cmd_packets > 0u; 735 } 736 737 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 738 // check for async hci transport implementations 739 if (!hci_stack->hci_transport->can_send_packet_now) return true; 740 return hci_stack->hci_transport->can_send_packet_now(packet_type); 741 } 742 743 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 744 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 745 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 746 } 747 748 bool hci_can_send_acl_le_packet_now(void){ 749 if (hci_stack->hci_packet_buffer_reserved) return false; 750 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 751 } 752 753 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 754 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 755 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 756 } 757 758 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 759 if (hci_stack->hci_packet_buffer_reserved) return false; 760 return hci_can_send_prepared_acl_packet_now(con_handle); 761 } 762 763 #ifdef ENABLE_CLASSIC 764 bool hci_can_send_acl_classic_packet_now(void){ 765 if (hci_stack->hci_packet_buffer_reserved) return false; 766 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 767 } 768 769 bool hci_can_send_prepared_sco_packet_now(void){ 770 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 771 if (hci_have_usb_transport()){ 772 return hci_stack->sco_can_send_now; 773 } else { 774 return hci_number_free_sco_slots() > 0; 775 } 776 } 777 778 bool hci_can_send_sco_packet_now(void){ 779 if (hci_stack->hci_packet_buffer_reserved) return false; 780 return hci_can_send_prepared_sco_packet_now(); 781 } 782 783 void hci_request_sco_can_send_now_event(void){ 784 hci_stack->sco_waiting_for_can_send_now = 1; 785 hci_notify_if_sco_can_send_now(); 786 } 787 #endif 788 789 // used for internal checks in l2cap.c 790 bool hci_is_packet_buffer_reserved(void){ 791 return hci_stack->hci_packet_buffer_reserved; 792 } 793 794 // reserves outgoing packet buffer. 795 // @return 1 if successful 796 bool hci_reserve_packet_buffer(void){ 797 if (hci_stack->hci_packet_buffer_reserved) { 798 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 799 return false; 800 } 801 hci_stack->hci_packet_buffer_reserved = true; 802 return true; 803 } 804 805 void hci_release_packet_buffer(void){ 806 hci_stack->hci_packet_buffer_reserved = false; 807 } 808 809 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 810 static int hci_transport_synchronous(void){ 811 return hci_stack->hci_transport->can_send_packet_now == NULL; 812 } 813 814 // used for debugging 815 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 816 static void hci_controller_dump_packets(void){ 817 // format: "{handle:04x}:{count:02d} " 818 char summaries[3][7 * 8 + 1]; 819 uint16_t totals[3]; 820 uint8_t index; 821 for (index = 0 ; index < 3 ; index++){ 822 summaries[index][0] = 0; 823 totals[index] = 0; 824 } 825 btstack_linked_item_t *it; 826 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 827 hci_connection_t * connection = (hci_connection_t *) it; 828 switch (connection->address_type){ 829 case BD_ADDR_TYPE_ACL: 830 index = 0; 831 break; 832 case BD_ADDR_TYPE_SCO: 833 index = 2; 834 break; 835 default: 836 index = 1; 837 break; 838 } 839 totals[index] += connection->num_packets_sent; 840 char item_text[10]; 841 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 842 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 843 } 844 for (index = 0 ; index < 3 ; index++){ 845 if (summaries[index][0] == 0){ 846 summaries[index][0] = '-'; 847 summaries[index][1] = 0; 848 } 849 } 850 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]); 851 } 852 #endif 853 854 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 855 856 // 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); 857 858 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 859 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 860 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 861 max_acl_data_packet_length = hci_stack->le_data_packets_length; 862 } 863 864 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 865 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 866 max_acl_data_packet_length = connection->le_max_tx_octets; 867 } 868 #endif 869 870 log_debug("hci_send_acl_packet_fragments entered"); 871 872 uint8_t status = ERROR_CODE_SUCCESS; 873 // multiple packets could be send on a synchronous HCI transport 874 while (true){ 875 876 log_debug("hci_send_acl_packet_fragments loop entered"); 877 878 // get current data 879 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 880 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 881 bool more_fragments = false; 882 883 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 884 if (current_acl_data_packet_length > max_acl_data_packet_length){ 885 more_fragments = true; 886 current_acl_data_packet_length = max_acl_data_packet_length; 887 } 888 889 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 890 if (acl_header_pos > 0u){ 891 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 892 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 893 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 894 } 895 896 // update header len 897 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 898 899 // count packet 900 connection->num_packets_sent++; 901 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 902 903 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 904 if (more_fragments){ 905 // update start of next fragment to send 906 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 907 } else { 908 // done 909 hci_stack->acl_fragmentation_pos = 0; 910 hci_stack->acl_fragmentation_total_size = 0; 911 } 912 913 // send packet 914 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 915 const int size = current_acl_data_packet_length + 4; 916 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 917 hci_stack->acl_fragmentation_tx_active = 1; 918 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 919 if (err != 0){ 920 // no error from HCI Transport expected 921 status = ERROR_CODE_HARDWARE_FAILURE; 922 } 923 924 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 925 hci_controller_dump_packets(); 926 #endif 927 928 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 929 930 // done yet? 931 if (!more_fragments) break; 932 933 // can send more? 934 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 935 } 936 937 log_debug("hci_send_acl_packet_fragments loop over"); 938 939 // release buffer now for synchronous transport 940 if (hci_transport_synchronous()){ 941 hci_stack->acl_fragmentation_tx_active = 0; 942 hci_release_packet_buffer(); 943 hci_emit_transport_packet_sent(); 944 } 945 946 return status; 947 } 948 949 // pre: caller has reserved the packet buffer 950 uint8_t hci_send_acl_packet_buffer(int size){ 951 btstack_assert(hci_stack->hci_packet_buffer_reserved); 952 953 uint8_t * packet = hci_stack->hci_packet_buffer; 954 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 955 956 // check for free places on Bluetooth module 957 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 958 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 959 hci_release_packet_buffer(); 960 hci_emit_transport_packet_sent(); 961 return BTSTACK_ACL_BUFFERS_FULL; 962 } 963 964 hci_connection_t *connection = hci_connection_for_handle( con_handle); 965 if (!connection) { 966 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 967 hci_release_packet_buffer(); 968 hci_emit_transport_packet_sent(); 969 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 970 } 971 972 #ifdef ENABLE_CLASSIC 973 hci_connection_timestamp(connection); 974 #endif 975 976 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 977 978 // setup data 979 hci_stack->acl_fragmentation_total_size = size; 980 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 981 982 return hci_send_acl_packet_fragments(connection); 983 } 984 985 #ifdef ENABLE_CLASSIC 986 // pre: caller has reserved the packet buffer 987 uint8_t hci_send_sco_packet_buffer(int size){ 988 btstack_assert(hci_stack->hci_packet_buffer_reserved); 989 990 uint8_t * packet = hci_stack->hci_packet_buffer; 991 992 // skip checks in loopback mode 993 if (!hci_stack->loopback_mode){ 994 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 995 996 // check for free places on Bluetooth module 997 if (!hci_can_send_prepared_sco_packet_now()) { 998 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 999 hci_release_packet_buffer(); 1000 hci_emit_transport_packet_sent(); 1001 return BTSTACK_ACL_BUFFERS_FULL; 1002 } 1003 1004 // track send packet in connection struct 1005 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1006 if (!connection) { 1007 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1008 hci_release_packet_buffer(); 1009 hci_emit_transport_packet_sent(); 1010 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1011 } 1012 1013 if (hci_have_usb_transport()){ 1014 // token used 1015 hci_stack->sco_can_send_now = false; 1016 } else { 1017 if (hci_stack->synchronous_flow_control_enabled){ 1018 connection->num_packets_sent++; 1019 } else { 1020 connection->sco_tx_ready--; 1021 } 1022 } 1023 } 1024 1025 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1026 1027 #ifdef HAVE_SCO_TRANSPORT 1028 hci_stack->sco_transport->send_packet(packet, size); 1029 hci_release_packet_buffer(); 1030 hci_emit_transport_packet_sent(); 1031 1032 return 0; 1033 #else 1034 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1035 if (hci_transport_synchronous()){ 1036 hci_release_packet_buffer(); 1037 hci_emit_transport_packet_sent(); 1038 } 1039 1040 if (err != 0){ 1041 return ERROR_CODE_HARDWARE_FAILURE; 1042 } 1043 return ERROR_CODE_SUCCESS; 1044 #endif 1045 } 1046 #endif 1047 1048 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1049 static uint8_t hci_send_iso_packet_fragments(void){ 1050 1051 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1052 uint8_t status = ERROR_CODE_SUCCESS; 1053 // multiple packets could be send on a synchronous HCI transport 1054 while (true){ 1055 1056 // get current data 1057 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1058 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1059 bool more_fragments = false; 1060 1061 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1062 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1063 more_fragments = true; 1064 current_iso_data_packet_length = max_iso_data_packet_length; 1065 } 1066 1067 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1068 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1069 uint8_t pb_flags; 1070 if (iso_header_pos == 0u){ 1071 // first fragment, keep TS field 1072 pb_flags = more_fragments ? 0x00 : 0x02; 1073 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1074 } else { 1075 // later fragment, drop TS field 1076 pb_flags = more_fragments ? 0x01 : 0x03; 1077 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1078 } 1079 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1080 1081 // update header len 1082 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1083 1084 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1085 if (more_fragments){ 1086 // update start of next fragment to send 1087 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1088 } else { 1089 // done 1090 hci_stack->iso_fragmentation_pos = 0; 1091 hci_stack->iso_fragmentation_total_size = 0; 1092 } 1093 1094 // send packet 1095 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1096 const int size = current_iso_data_packet_length + 4; 1097 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1098 hci_stack->iso_fragmentation_tx_active = true; 1099 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1100 if (err != 0){ 1101 // no error from HCI Transport expected 1102 status = ERROR_CODE_HARDWARE_FAILURE; 1103 } 1104 1105 // done yet? 1106 if (!more_fragments) break; 1107 1108 // can send more? 1109 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1110 } 1111 1112 // release buffer now for synchronous transport 1113 if (hci_transport_synchronous()){ 1114 hci_stack->iso_fragmentation_tx_active = false; 1115 hci_release_packet_buffer(); 1116 hci_emit_transport_packet_sent(); 1117 } 1118 1119 return status; 1120 } 1121 1122 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1123 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1124 1125 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1126 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1127 if (iso_stream == NULL){ 1128 hci_release_packet_buffer(); 1129 hci_iso_notify_can_send_now(); 1130 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1131 } 1132 1133 // TODO: check for space on controller 1134 1135 // skip iso packets if needed 1136 if (iso_stream->num_packets_to_skip > 0){ 1137 iso_stream->num_packets_to_skip--; 1138 // pretend it was processed and trigger next one 1139 hci_release_packet_buffer(); 1140 hci_iso_notify_can_send_now(); 1141 return ERROR_CODE_SUCCESS; 1142 } 1143 1144 // track outgoing packet sent 1145 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1146 iso_stream->num_packets_sent++; 1147 1148 // setup data 1149 hci_stack->iso_fragmentation_total_size = size; 1150 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1151 1152 return hci_send_iso_packet_fragments(); 1153 } 1154 #endif 1155 1156 static void acl_handler(uint8_t *packet, uint16_t size){ 1157 1158 // get info 1159 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1160 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1161 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1162 uint16_t acl_length = READ_ACL_LENGTH(packet); 1163 1164 // ignore non-registered handle 1165 if (!conn){ 1166 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1167 return; 1168 } 1169 1170 // assert packet is complete 1171 if ((acl_length + 4u) != size){ 1172 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1173 return; 1174 } 1175 1176 #ifdef ENABLE_CLASSIC 1177 // update idle timestamp 1178 hci_connection_timestamp(conn); 1179 #endif 1180 1181 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1182 hci_stack->host_completed_packets = 1; 1183 conn->num_packets_completed++; 1184 #endif 1185 1186 // handle different packet types 1187 switch (acl_flags & 0x03u) { 1188 1189 case 0x01: // continuation fragment 1190 1191 // sanity checks 1192 if (conn->acl_recombination_pos == 0u) { 1193 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1194 return; 1195 } 1196 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1197 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1198 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1199 conn->acl_recombination_pos = 0; 1200 return; 1201 } 1202 1203 // append fragment payload (header already stored) 1204 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1205 &packet[4], acl_length); 1206 conn->acl_recombination_pos += acl_length; 1207 1208 // forward complete L2CAP packet if complete. 1209 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1210 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1211 // reset recombination buffer 1212 conn->acl_recombination_length = 0; 1213 conn->acl_recombination_pos = 0; 1214 } 1215 break; 1216 1217 case 0x02: { // first fragment 1218 1219 // sanity check 1220 if (conn->acl_recombination_pos) { 1221 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1222 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1223 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1224 } 1225 conn->acl_recombination_pos = 0; 1226 } 1227 1228 // peek into L2CAP packet! 1229 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1230 1231 // compare fragment size to L2CAP packet size 1232 if (acl_length >= (l2cap_length + 4u)){ 1233 // forward fragment as L2CAP packet 1234 hci_emit_acl_packet(packet, acl_length + 4u); 1235 } else { 1236 1237 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1238 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1239 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1240 return; 1241 } 1242 1243 // store first fragment and tweak acl length for complete package 1244 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1245 packet, acl_length + 4u); 1246 conn->acl_recombination_pos = acl_length + 4u; 1247 conn->acl_recombination_length = l2cap_length; 1248 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1249 } 1250 break; 1251 1252 } 1253 default: 1254 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1255 return; 1256 } 1257 1258 // execute main loop 1259 hci_run(); 1260 } 1261 1262 static void hci_connection_stop_timer(hci_connection_t * conn){ 1263 btstack_run_loop_remove_timer(&conn->timeout); 1264 #ifdef ENABLE_CLASSIC 1265 btstack_run_loop_remove_timer(&conn->timeout_sco); 1266 #endif 1267 } 1268 1269 static void hci_shutdown_connection(hci_connection_t *conn){ 1270 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1271 1272 #ifdef ENABLE_CLASSIC 1273 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1274 bd_addr_type_t addr_type = conn->address_type; 1275 #endif 1276 #ifdef HAVE_SCO_TRANSPORT 1277 hci_con_handle_t con_handle = conn->con_handle; 1278 #endif 1279 #endif 1280 1281 hci_connection_stop_timer(conn); 1282 1283 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1284 btstack_memory_hci_connection_free( conn ); 1285 1286 // now it's gone 1287 hci_emit_nr_connections_changed(); 1288 1289 #ifdef ENABLE_CLASSIC 1290 #ifdef ENABLE_SCO_OVER_HCI 1291 // update SCO 1292 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1293 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1294 } 1295 #endif 1296 #ifdef HAVE_SCO_TRANSPORT 1297 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1298 hci_stack->sco_transport->close(con_handle); 1299 } 1300 #endif 1301 #endif 1302 } 1303 1304 #ifdef ENABLE_CLASSIC 1305 1306 static const uint16_t packet_type_sizes[] = { 1307 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1308 HCI_ACL_DH1_SIZE, 0, 0, 0, 1309 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1310 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1311 }; 1312 static const uint8_t packet_type_feature_requirement_bit[] = { 1313 0, // 3 slot packets 1314 1, // 5 slot packets 1315 25, // EDR 2 mpbs 1316 26, // EDR 3 mbps 1317 39, // 3 slot EDR packts 1318 40, // 5 slot EDR packet 1319 }; 1320 static const uint16_t packet_type_feature_packet_mask[] = { 1321 0x0f00, // 3 slot packets 1322 0xf000, // 5 slot packets 1323 0x1102, // EDR 2 mpbs 1324 0x2204, // EDR 3 mbps 1325 0x0300, // 3 slot EDR packts 1326 0x3000, // 5 slot EDR packet 1327 }; 1328 1329 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1330 // enable packet types based on size 1331 uint16_t packet_types = 0; 1332 unsigned int i; 1333 for (i=0;i<16;i++){ 1334 if (packet_type_sizes[i] == 0) continue; 1335 if (packet_type_sizes[i] <= buffer_size){ 1336 packet_types |= 1 << i; 1337 } 1338 } 1339 // disable packet types due to missing local supported features 1340 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1341 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1342 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1343 if (feature_set) continue; 1344 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1345 packet_types &= ~packet_type_feature_packet_mask[i]; 1346 } 1347 // flip bits for "may not be used" 1348 packet_types ^= 0x3306; 1349 return packet_types; 1350 } 1351 1352 uint16_t hci_usable_acl_packet_types(void){ 1353 return hci_stack->packet_types; 1354 } 1355 #endif 1356 1357 uint8_t* hci_get_outgoing_packet_buffer(void){ 1358 // hci packet buffer is >= acl data packet length 1359 return hci_stack->hci_packet_buffer; 1360 } 1361 1362 uint16_t hci_max_acl_data_packet_length(void){ 1363 return hci_stack->acl_data_packet_length; 1364 } 1365 1366 #ifdef ENABLE_CLASSIC 1367 bool hci_extended_sco_link_supported(void){ 1368 // No. 31, byte 3, bit 7 1369 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1370 } 1371 #endif 1372 1373 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1374 // No. 54, byte 6, bit 6 1375 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1376 } 1377 1378 #ifdef ENABLE_CLASSIC 1379 static int gap_ssp_supported(void){ 1380 // No. 51, byte 6, bit 3 1381 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1382 } 1383 #endif 1384 1385 static int hci_classic_supported(void){ 1386 #ifdef ENABLE_CLASSIC 1387 // No. 37, byte 4, bit 5, = No BR/EDR Support 1388 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1389 #else 1390 return 0; 1391 #endif 1392 } 1393 1394 static int hci_le_supported(void){ 1395 #ifdef ENABLE_BLE 1396 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1397 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1398 #else 1399 return 0; 1400 #endif 1401 } 1402 1403 static bool hci_command_supported(uint8_t command_index){ 1404 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1405 } 1406 1407 #ifdef ENABLE_BLE 1408 1409 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1410 static bool hci_extended_advertising_supported(void){ 1411 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1412 } 1413 #endif 1414 1415 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1416 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1417 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1418 } else { 1419 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1420 } 1421 } 1422 1423 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1424 *addr_type = hci_stack->le_own_addr_type; 1425 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1426 } 1427 1428 #ifdef ENABLE_LE_PERIPHERAL 1429 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1430 *addr_type = hci_stack->le_advertisements_own_addr_type; 1431 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1432 }; 1433 #endif 1434 1435 #ifdef ENABLE_LE_CENTRAL 1436 1437 /** 1438 * @brief Get own addr type and address used for LE connections (Central) 1439 */ 1440 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1441 *addr_type = hci_stack->le_connection_own_addr_type; 1442 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1443 } 1444 1445 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1446 1447 uint16_t offset = 3; 1448 uint8_t num_reports = packet[offset]; 1449 offset += 1; 1450 1451 uint16_t i; 1452 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1453 for (i=0; (i<num_reports) && (offset < size);i++){ 1454 // sanity checks on data_length: 1455 uint8_t data_length = packet[offset + 8]; 1456 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1457 if ((offset + 9u + data_length + 1u) > size) return; 1458 // setup event 1459 uint8_t event_size = 10u + data_length; 1460 uint16_t pos = 0; 1461 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1462 event[pos++] = event_size; 1463 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1464 offset += 8; 1465 pos += 8; 1466 event[pos++] = packet[offset + 1 + data_length]; // rssi 1467 event[pos++] = data_length; 1468 offset++; 1469 (void)memcpy(&event[pos], &packet[offset], data_length); 1470 pos += data_length; 1471 offset += data_length + 1u; // rssi 1472 hci_emit_event(event, pos, 1); 1473 } 1474 } 1475 1476 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1477 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1478 uint16_t offset = 3; 1479 uint8_t num_reports = packet[offset++]; 1480 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1481 uint8_t i; 1482 for (i=0; (i<num_reports) && (offset < size);i++){ 1483 // sanity checks on data_length: 1484 uint16_t data_length = packet[offset + 23]; 1485 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1486 if ((offset + 24u + data_length) > size) return; 1487 uint16_t event_type = little_endian_read_16(packet, offset); 1488 offset += 2; 1489 if ((event_type & 0x10) != 0) { 1490 // setup legacy event 1491 uint8_t legacy_event_type; 1492 switch (event_type){ 1493 case 0b0010011: 1494 // ADV_IND 1495 legacy_event_type = 0; 1496 break; 1497 case 0b0010101: 1498 // ADV_DIRECT_IND 1499 legacy_event_type = 1; 1500 break; 1501 case 0b0010010: 1502 // ADV_SCAN_IND 1503 legacy_event_type = 2; 1504 break; 1505 case 0b0010000: 1506 // ADV_NONCONN_IND 1507 legacy_event_type = 3; 1508 break; 1509 case 0b0011011: 1510 case 0b0011010: 1511 // SCAN_RSP 1512 legacy_event_type = 4; 1513 break; 1514 default: 1515 legacy_event_type = 0; 1516 break; 1517 } 1518 uint16_t pos = 0; 1519 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1520 event[pos++] = 10u + data_length; 1521 event[pos++] = legacy_event_type; 1522 // copy address type + address 1523 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1524 offset += 7; 1525 pos += 7; 1526 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1527 offset += 4; 1528 // copy rssi 1529 event[pos++] = packet[offset++]; 1530 // skip periodic advertising interval and direct address 1531 offset += 9; 1532 // copy data len + data; 1533 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1534 pos += 1 +data_length; 1535 offset += 1+ data_length; 1536 hci_emit_event(event, pos, 1); 1537 } else { 1538 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1539 uint8_t report_len = 24 + data_length; 1540 event[1] = report_len; 1541 little_endian_store_16(event, 2, event_type); 1542 memcpy(&event[4], &packet[offset], report_len); 1543 offset += report_len; 1544 hci_emit_event(event, 2 + report_len, 1); 1545 } 1546 } 1547 } 1548 #endif 1549 1550 #endif 1551 #endif 1552 1553 #ifdef ENABLE_BLE 1554 #ifdef ENABLE_LE_PERIPHERAL 1555 static void hci_update_advertisements_enabled_for_current_roles(void){ 1556 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1557 // get number of active le slave connections 1558 int num_slave_connections = 0; 1559 btstack_linked_list_iterator_t it; 1560 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1561 while (btstack_linked_list_iterator_has_next(&it)){ 1562 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1563 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1564 if (con->state != OPEN) continue; 1565 if (con->role != HCI_ROLE_SLAVE) continue; 1566 if (!hci_is_le_connection(con)) continue; 1567 num_slave_connections++; 1568 } 1569 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1570 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1571 } else { 1572 hci_stack->le_advertisements_enabled_for_current_roles = false; 1573 } 1574 } 1575 #endif 1576 #endif 1577 1578 #ifdef ENABLE_CLASSIC 1579 static void gap_run_set_local_name(void){ 1580 hci_reserve_packet_buffer(); 1581 uint8_t * packet = hci_stack->hci_packet_buffer; 1582 // construct HCI Command and send 1583 uint16_t opcode = hci_write_local_name.opcode; 1584 hci_stack->last_cmd_opcode = opcode; 1585 packet[0] = opcode & 0xff; 1586 packet[1] = opcode >> 8; 1587 packet[2] = DEVICE_NAME_LEN; 1588 memset(&packet[3], 0, DEVICE_NAME_LEN); 1589 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1590 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1591 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1592 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1593 // expand '00:00:00:00:00:00' in name with bd_addr 1594 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1595 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1596 } 1597 1598 static void gap_run_set_eir_data(void){ 1599 hci_reserve_packet_buffer(); 1600 uint8_t * packet = hci_stack->hci_packet_buffer; 1601 // construct HCI Command in-place and send 1602 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1603 hci_stack->last_cmd_opcode = opcode; 1604 uint16_t offset = 0; 1605 packet[offset++] = opcode & 0xff; 1606 packet[offset++] = opcode >> 8; 1607 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1608 packet[offset++] = 0; // FEC not required 1609 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1610 if (hci_stack->eir_data){ 1611 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1612 ad_context_t context; 1613 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1614 uint8_t data_type = ad_iterator_get_data_type(&context); 1615 uint8_t size = ad_iterator_get_data_len(&context); 1616 const uint8_t *data = ad_iterator_get_data(&context); 1617 // copy item 1618 packet[offset++] = size + 1; 1619 packet[offset++] = data_type; 1620 memcpy(&packet[offset], data, size); 1621 // update name item 1622 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1623 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1624 } 1625 offset += size; 1626 } 1627 } else { 1628 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1629 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1630 packet[offset++] = bytes_to_copy + 1; 1631 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1632 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1633 // expand '00:00:00:00:00:00' in name with bd_addr 1634 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1635 } 1636 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1637 } 1638 1639 static void hci_run_gap_tasks_classic(void){ 1640 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1641 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1642 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1643 return; 1644 } 1645 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1646 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1647 gap_run_set_local_name(); 1648 return; 1649 } 1650 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1651 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1652 gap_run_set_eir_data(); 1653 return; 1654 } 1655 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1656 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1657 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1658 return; 1659 } 1660 // write page scan activity 1661 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1662 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1663 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1664 return; 1665 } 1666 // write page scan type 1667 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1668 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1669 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1670 return; 1671 } 1672 // write page timeout 1673 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1674 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1675 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1676 return; 1677 } 1678 // send scan enable 1679 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1680 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1681 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1682 return; 1683 } 1684 // send write scan activity 1685 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1686 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1687 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1688 return; 1689 } 1690 } 1691 #endif 1692 1693 #ifndef HAVE_HOST_CONTROLLER_API 1694 1695 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1696 if (!hci_stack->config) return 0; 1697 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1698 // Limit baud rate for Broadcom chipsets to 3 mbps 1699 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1700 baud_rate = 3000000; 1701 } 1702 return baud_rate; 1703 } 1704 1705 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1706 UNUSED(ds); 1707 1708 switch (hci_stack->substate){ 1709 case HCI_INIT_W4_SEND_RESET: 1710 log_info("Resend HCI Reset"); 1711 hci_stack->substate = HCI_INIT_SEND_RESET; 1712 hci_stack->num_cmd_packets = 1; 1713 hci_run(); 1714 break; 1715 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1716 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1717 if (hci_stack->hci_transport->reset_link){ 1718 hci_stack->hci_transport->reset_link(); 1719 } 1720 1721 /* fall through */ 1722 1723 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1724 log_info("Resend HCI Reset - CSR Warm Boot"); 1725 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1726 hci_stack->num_cmd_packets = 1; 1727 hci_run(); 1728 break; 1729 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1730 if (hci_stack->hci_transport->set_baudrate){ 1731 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1732 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1733 hci_stack->hci_transport->set_baudrate(baud_rate); 1734 } 1735 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1736 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1737 if (hci_stack->hci_transport->reset_link){ 1738 log_info("Link Reset"); 1739 hci_stack->hci_transport->reset_link(); 1740 } 1741 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1742 hci_run(); 1743 } 1744 break; 1745 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1746 // otherwise continue 1747 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1748 hci_send_cmd(&hci_read_local_supported_commands); 1749 break; 1750 default: 1751 break; 1752 } 1753 } 1754 #endif 1755 1756 static void hci_initializing_next_state(void){ 1757 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1758 } 1759 1760 static void hci_init_done(void){ 1761 // done. tell the app 1762 log_info("hci_init_done -> HCI_STATE_WORKING"); 1763 hci_stack->state = HCI_STATE_WORKING; 1764 hci_emit_state(); 1765 } 1766 1767 // assumption: hci_can_send_command_packet_now() == true 1768 static void hci_initializing_run(void){ 1769 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1770 1771 if (!hci_can_send_command_packet_now()) return; 1772 1773 #ifndef HAVE_HOST_CONTROLLER_API 1774 bool need_baud_change = hci_stack->config 1775 && hci_stack->chipset 1776 && hci_stack->chipset->set_baudrate_command 1777 && hci_stack->hci_transport->set_baudrate 1778 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1779 #endif 1780 1781 switch (hci_stack->substate){ 1782 case HCI_INIT_SEND_RESET: 1783 hci_state_reset(); 1784 1785 #ifndef HAVE_HOST_CONTROLLER_API 1786 // prepare reset if command complete not received in 100ms 1787 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1788 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1789 btstack_run_loop_add_timer(&hci_stack->timeout); 1790 #endif 1791 // send command 1792 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1793 hci_send_cmd(&hci_reset); 1794 break; 1795 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1796 hci_send_cmd(&hci_read_local_version_information); 1797 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1798 break; 1799 1800 #ifndef HAVE_HOST_CONTROLLER_API 1801 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1802 hci_state_reset(); 1803 // prepare reset if command complete not received in 100ms 1804 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1805 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1806 btstack_run_loop_add_timer(&hci_stack->timeout); 1807 // send command 1808 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1809 hci_send_cmd(&hci_reset); 1810 break; 1811 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1812 hci_state_reset(); 1813 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1814 hci_send_cmd(&hci_reset); 1815 break; 1816 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1817 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1818 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1819 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1820 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1821 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1822 break; 1823 } 1824 case HCI_INIT_SET_BD_ADDR: 1825 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1826 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1827 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1828 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1829 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1830 break; 1831 case HCI_INIT_SEND_READ_LOCAL_NAME: 1832 #ifdef ENABLE_CLASSIC 1833 hci_send_cmd(&hci_read_local_name); 1834 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1835 break; 1836 #endif 1837 /* fall through */ 1838 1839 case HCI_INIT_SEND_BAUD_CHANGE: 1840 if (need_baud_change) { 1841 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1842 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1843 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1844 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1845 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1846 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1847 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1848 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1849 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1850 btstack_run_loop_add_timer(&hci_stack->timeout); 1851 } 1852 break; 1853 } 1854 1855 /* fall through */ 1856 1857 case HCI_INIT_CUSTOM_INIT: 1858 // Custom initialization 1859 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1860 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1861 bool send_cmd = false; 1862 switch (hci_stack->chipset_result){ 1863 case BTSTACK_CHIPSET_VALID_COMMAND: 1864 send_cmd = true; 1865 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1866 break; 1867 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1868 send_cmd = true; 1869 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1870 log_info("CSR Warm Boot"); 1871 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1872 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1873 btstack_run_loop_add_timer(&hci_stack->timeout); 1874 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1875 && hci_stack->config 1876 && hci_stack->chipset 1877 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1878 && hci_stack->hci_transport->set_baudrate 1879 && hci_transport_uart_get_main_baud_rate()){ 1880 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1881 } else { 1882 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1883 } 1884 break; 1885 default: 1886 break; 1887 } 1888 1889 if (send_cmd){ 1890 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1891 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1892 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1893 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1894 break; 1895 } 1896 log_info("Init script done"); 1897 1898 // Init script download on Broadcom chipsets causes: 1899 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1900 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1901 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1902 1903 // - baud rate to reset, restore UART baud rate if needed 1904 if (need_baud_change) { 1905 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1906 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1907 hci_stack->hci_transport->set_baudrate(baud_rate); 1908 } 1909 1910 uint16_t bcm_delay_ms = 300; 1911 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1912 // -> Work around: wait here. 1913 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1914 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1915 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1916 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1917 btstack_run_loop_add_timer(&hci_stack->timeout); 1918 break; 1919 } 1920 } 1921 #endif 1922 /* fall through */ 1923 1924 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1925 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1926 hci_send_cmd(&hci_read_local_supported_commands); 1927 break; 1928 case HCI_INIT_READ_BD_ADDR: 1929 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1930 hci_send_cmd(&hci_read_bd_addr); 1931 break; 1932 case HCI_INIT_READ_BUFFER_SIZE: 1933 // only read buffer size if supported 1934 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1935 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1936 hci_send_cmd(&hci_read_buffer_size); 1937 break; 1938 } 1939 1940 /* fall through */ 1941 1942 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1943 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1944 hci_send_cmd(&hci_read_local_supported_features); 1945 break; 1946 1947 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1948 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1949 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1950 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1951 break; 1952 case HCI_INIT_HOST_BUFFER_SIZE: 1953 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1954 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1955 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1956 break; 1957 #endif 1958 1959 case HCI_INIT_SET_EVENT_MASK: 1960 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1961 if (hci_le_supported()){ 1962 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1963 } else { 1964 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1965 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1966 } 1967 break; 1968 1969 case HCI_INIT_SET_EVENT_MASK_2: 1970 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1971 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1972 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1973 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1974 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1975 // Encryption Change Event v2 - bit 25 1976 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1977 break; 1978 } 1979 1980 #ifdef ENABLE_CLASSIC 1981 /* fall through */ 1982 1983 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1984 if (hci_classic_supported() && gap_ssp_supported()){ 1985 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1986 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1987 break; 1988 } 1989 1990 /* fall through */ 1991 1992 case HCI_INIT_WRITE_INQUIRY_MODE: 1993 if (hci_classic_supported()){ 1994 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 1995 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 1996 break; 1997 } 1998 1999 /* fall through */ 2000 2001 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2002 // skip write secure connections host support if not supported or disabled 2003 if (hci_classic_supported() && hci_stack->secure_connections_enable 2004 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2005 hci_stack->secure_connections_active = true; 2006 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2007 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2008 break; 2009 } 2010 2011 /* fall through */ 2012 2013 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2014 // skip set min encryption key size 2015 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2016 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2017 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2018 break; 2019 } 2020 2021 #ifdef ENABLE_SCO_OVER_HCI 2022 /* fall through */ 2023 2024 // only sent if ENABLE_SCO_OVER_HCI is defined 2025 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2026 // skip write synchronous flow control if not supported 2027 if (hci_classic_supported() 2028 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2029 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2030 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2031 break; 2032 } 2033 /* fall through */ 2034 2035 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2036 // skip write default erroneous data reporting if not supported 2037 if (hci_classic_supported() 2038 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2039 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2040 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2041 break; 2042 } 2043 #endif 2044 2045 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2046 /* fall through */ 2047 2048 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2049 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2050 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2051 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2052 #ifdef ENABLE_SCO_OVER_HCI 2053 log_info("BCM: Route SCO data via HCI transport"); 2054 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2055 #endif 2056 #ifdef ENABLE_SCO_OVER_PCM 2057 log_info("BCM: Route SCO data via PCM interface"); 2058 #ifdef ENABLE_BCM_PCM_WBS 2059 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2060 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2061 #else 2062 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2063 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2064 #endif 2065 #endif 2066 break; 2067 } 2068 #endif 2069 2070 #ifdef ENABLE_SCO_OVER_PCM 2071 /* fall through */ 2072 2073 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2074 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2075 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2076 log_info("BCM: Config PCM interface for I2S"); 2077 #ifdef ENABLE_BCM_PCM_WBS 2078 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2079 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2080 #else 2081 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2082 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2083 #endif 2084 break; 2085 } 2086 #endif 2087 #endif 2088 2089 #ifdef ENABLE_BLE 2090 /* fall through */ 2091 2092 // LE INIT 2093 case HCI_INIT_LE_READ_BUFFER_SIZE: 2094 if (hci_le_supported()){ 2095 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2096 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2097 hci_send_cmd(&hci_le_read_buffer_size_v2); 2098 } else { 2099 hci_send_cmd(&hci_le_read_buffer_size); 2100 } 2101 break; 2102 } 2103 2104 /* fall through */ 2105 2106 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2107 // skip write le host if not supported (e.g. on LE only EM9301) 2108 if (hci_le_supported() 2109 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2110 // LE Supported Host = 1, Simultaneous Host = 0 2111 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2112 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2113 break; 2114 } 2115 2116 /* fall through */ 2117 2118 case HCI_INIT_LE_SET_EVENT_MASK: 2119 if (hci_le_supported()){ 2120 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2121 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2122 break; 2123 } 2124 #endif 2125 2126 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2127 /* fall through */ 2128 2129 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2130 if (hci_le_supported() 2131 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2132 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2133 hci_send_cmd(&hci_le_read_maximum_data_length); 2134 break; 2135 } 2136 2137 /* fall through */ 2138 2139 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2140 if (hci_le_supported() 2141 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2142 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2143 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2144 break; 2145 } 2146 #endif 2147 2148 #ifdef ENABLE_LE_CENTRAL 2149 /* fall through */ 2150 2151 case HCI_INIT_READ_WHITE_LIST_SIZE: 2152 if (hci_le_supported()){ 2153 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2154 hci_send_cmd(&hci_le_read_white_list_size); 2155 break; 2156 } 2157 2158 #endif 2159 2160 #ifdef ENABLE_LE_PERIPHERAL 2161 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2162 /* fall through */ 2163 2164 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2165 if (hci_extended_advertising_supported()){ 2166 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2167 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2168 break; 2169 } 2170 #endif 2171 #endif 2172 /* fall through */ 2173 2174 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2175 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2176 if (hci_le_supported()) { 2177 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2178 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2179 break; 2180 } 2181 #endif 2182 2183 /* fall through */ 2184 2185 case HCI_INIT_DONE: 2186 hci_stack->substate = HCI_INIT_DONE; 2187 // main init sequence complete 2188 #ifdef ENABLE_CLASSIC 2189 // check if initial Classic GAP Tasks are completed 2190 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2191 hci_run_gap_tasks_classic(); 2192 break; 2193 } 2194 #endif 2195 #ifdef ENABLE_BLE 2196 #ifdef ENABLE_LE_CENTRAL 2197 // check if initial LE GAP Tasks are completed 2198 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2199 hci_run_general_gap_le(); 2200 break; 2201 } 2202 #endif 2203 #endif 2204 hci_init_done(); 2205 break; 2206 2207 default: 2208 return; 2209 } 2210 } 2211 2212 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2213 bool command_completed = false; 2214 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2215 uint16_t opcode = little_endian_read_16(packet,3); 2216 if (opcode == hci_stack->last_cmd_opcode){ 2217 command_completed = true; 2218 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2219 } else { 2220 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2221 } 2222 } 2223 2224 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2225 uint8_t status = packet[2]; 2226 uint16_t opcode = little_endian_read_16(packet,4); 2227 if (opcode == hci_stack->last_cmd_opcode){ 2228 if (status){ 2229 command_completed = true; 2230 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2231 } else { 2232 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2233 } 2234 } else { 2235 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2236 } 2237 } 2238 #ifndef HAVE_HOST_CONTROLLER_API 2239 // Vendor == CSR 2240 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2241 // TODO: track actual command 2242 command_completed = true; 2243 } 2244 2245 // Vendor == Toshiba 2246 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2247 // TODO: track actual command 2248 command_completed = true; 2249 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2250 hci_stack->num_cmd_packets = 1; 2251 } 2252 #endif 2253 2254 return command_completed; 2255 } 2256 2257 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2258 2259 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2260 2261 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2262 2263 #ifndef HAVE_HOST_CONTROLLER_API 2264 2265 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2266 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2267 // 2268 // HCI Reset 2269 // Timeout 100 ms 2270 // HCI Reset 2271 // Command Complete Reset 2272 // HCI Read Local Version Information 2273 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2274 // hang... 2275 // 2276 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2277 if (!command_completed 2278 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2279 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2280 2281 uint16_t opcode = little_endian_read_16(packet,3); 2282 if (opcode == hci_reset.opcode){ 2283 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2284 return; 2285 } 2286 } 2287 2288 // CSR & H5 2289 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2290 if (!command_completed 2291 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2292 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2293 2294 uint16_t opcode = little_endian_read_16(packet,3); 2295 if (opcode == hci_reset.opcode){ 2296 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2297 return; 2298 } 2299 } 2300 2301 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2302 // fix: Correct substate and behave as command below 2303 if (command_completed){ 2304 switch (hci_stack->substate){ 2305 case HCI_INIT_SEND_RESET: 2306 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2307 break; 2308 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2309 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2310 break; 2311 default: 2312 break; 2313 } 2314 } 2315 2316 #endif 2317 2318 if (!command_completed) return; 2319 2320 bool need_baud_change = false; 2321 bool need_addr_change = false; 2322 2323 #ifndef HAVE_HOST_CONTROLLER_API 2324 need_baud_change = hci_stack->config 2325 && hci_stack->chipset 2326 && hci_stack->chipset->set_baudrate_command 2327 && hci_stack->hci_transport->set_baudrate 2328 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2329 2330 need_addr_change = hci_stack->custom_bd_addr_set 2331 && hci_stack->chipset 2332 && hci_stack->chipset->set_bd_addr_command; 2333 #endif 2334 2335 switch(hci_stack->substate){ 2336 2337 #ifndef HAVE_HOST_CONTROLLER_API 2338 case HCI_INIT_SEND_RESET: 2339 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2340 // fix: just correct substate and behave as command below 2341 2342 /* fall through */ 2343 #endif 2344 2345 case HCI_INIT_W4_SEND_RESET: 2346 btstack_run_loop_remove_timer(&hci_stack->timeout); 2347 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2348 return; 2349 2350 #ifndef HAVE_HOST_CONTROLLER_API 2351 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2352 // for STLC2500D, baud rate change already happened. 2353 // for others, baud rate gets changed now 2354 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2355 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2356 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2357 hci_stack->hci_transport->set_baudrate(baud_rate); 2358 } 2359 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2360 return; 2361 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2362 btstack_run_loop_remove_timer(&hci_stack->timeout); 2363 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2364 return; 2365 case HCI_INIT_W4_CUSTOM_INIT: 2366 // repeat custom init 2367 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2368 return; 2369 #endif 2370 2371 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2372 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2373 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2374 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2375 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2376 return; 2377 } 2378 if (need_addr_change){ 2379 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2380 return; 2381 } 2382 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2383 return; 2384 #ifndef HAVE_HOST_CONTROLLER_API 2385 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2386 if (need_baud_change){ 2387 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2388 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2389 hci_stack->hci_transport->set_baudrate(baud_rate); 2390 } 2391 if (need_addr_change){ 2392 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2393 return; 2394 } 2395 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2396 return; 2397 case HCI_INIT_W4_SET_BD_ADDR: 2398 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2399 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2400 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2401 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2402 return; 2403 } 2404 // skipping st warm boot 2405 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2406 return; 2407 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2408 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2409 return; 2410 #endif 2411 2412 case HCI_INIT_DONE: 2413 // set state if we came here by fall through 2414 hci_stack->substate = HCI_INIT_DONE; 2415 return; 2416 2417 default: 2418 break; 2419 } 2420 hci_initializing_next_state(); 2421 } 2422 2423 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2424 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2425 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2426 // check if we have been aware of the HCI connection 2427 switch (conn->state){ 2428 case SENT_CREATE_CONNECTION: 2429 case RECEIVED_CONNECTION_REQUEST: 2430 break; 2431 default: 2432 return; 2433 } 2434 2435 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2436 bd_addr_t bd_address; 2437 (void)memcpy(&bd_address, conn->address, 6); 2438 2439 #ifdef ENABLE_CLASSIC 2440 // cache needed data 2441 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2442 #endif 2443 2444 // connection failed, remove entry 2445 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2446 btstack_memory_hci_connection_free( conn ); 2447 2448 #ifdef ENABLE_CLASSIC 2449 // notify client if dedicated bonding 2450 if (notify_dedicated_bonding_failed){ 2451 log_info("hci notify_dedicated_bonding_failed"); 2452 hci_emit_dedicated_bonding_result(bd_address, status); 2453 } 2454 2455 // if authentication error, also delete link key 2456 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2457 gap_drop_link_key_for_bd_addr(bd_address); 2458 } 2459 #else 2460 UNUSED(status); 2461 #endif 2462 } 2463 2464 #ifdef ENABLE_CLASSIC 2465 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2466 // SSP Controller 2467 if (features[6] & (1 << 3)){ 2468 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2469 } 2470 // eSCO 2471 if (features[3] & (1<<7)){ 2472 conn->remote_supported_features[0] |= 1; 2473 } 2474 // Extended features 2475 if (features[7] & (1<<7)){ 2476 conn->remote_supported_features[0] |= 2; 2477 } 2478 } 2479 2480 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2481 // SSP Host 2482 if (features[0] & (1 << 0)){ 2483 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2484 } 2485 // SC Host 2486 if (features[0] & (1 << 3)){ 2487 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2488 } 2489 } 2490 2491 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2492 // SC Controller 2493 if (features[1] & (1 << 0)){ 2494 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2495 } 2496 } 2497 2498 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2499 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2500 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2501 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 2502 if (conn->bonding_flags & BONDING_DEDICATED){ 2503 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2504 } 2505 } 2506 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2507 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2508 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2509 } 2510 2511 #endif 2512 2513 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2514 // handle BT initialization 2515 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2516 hci_initializing_event_handler(packet, size); 2517 } 2518 2519 // help with BT sleep 2520 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2521 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2522 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2523 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2524 hci_initializing_next_state(); 2525 } 2526 } 2527 2528 #ifdef ENABLE_CLASSIC 2529 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2530 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2531 conn->encryption_key_size = encryption_key_size; 2532 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2533 2534 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2535 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2536 conn->bonding_flags &= ~BONDING_DEDICATED; 2537 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2538 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2539 return; 2540 } 2541 2542 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2543 conn->requested_security_level = LEVEL_0; 2544 hci_emit_security_level(conn->con_handle, security_level); 2545 return; 2546 } 2547 2548 // Request remote features if not already done 2549 hci_trigger_remote_features_for_connection(conn); 2550 2551 // Request Authentication if not already done 2552 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2553 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2554 } 2555 #endif 2556 2557 static void hci_store_local_supported_commands(const uint8_t * packet){ 2558 // create mapping table 2559 #define X(name, offset, bit) { offset, bit }, 2560 static struct { 2561 uint8_t byte_offset; 2562 uint8_t bit_position; 2563 } supported_hci_commands_map [] = { 2564 SUPPORTED_HCI_COMMANDS 2565 }; 2566 #undef X 2567 2568 // create names for debug purposes 2569 #ifdef ENABLE_LOG_DEBUG 2570 #define X(name, offset, bit) #name, 2571 static const char * command_names[] = { 2572 SUPPORTED_HCI_COMMANDS 2573 }; 2574 #undef X 2575 #endif 2576 2577 hci_stack->local_supported_commands = 0; 2578 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2579 uint16_t i; 2580 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2581 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2582 #ifdef ENABLE_LOG_DEBUG 2583 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); 2584 #else 2585 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2586 #endif 2587 hci_stack->local_supported_commands |= (1LU << i); 2588 } 2589 } 2590 log_info("Local supported commands summary %04x", hci_stack->local_supported_commands); 2591 } 2592 2593 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2594 UNUSED(size); 2595 2596 uint16_t manufacturer; 2597 #ifdef ENABLE_CLASSIC 2598 hci_con_handle_t handle; 2599 hci_connection_t * conn; 2600 #endif 2601 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2602 uint8_t status; 2603 #endif 2604 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2605 le_audio_cig_t * cig; 2606 #endif 2607 2608 // get num cmd packets - limit to 1 to reduce complexity 2609 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2610 2611 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2612 switch (opcode){ 2613 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2614 if (packet[5]) break; 2615 // terminate, name 248 chars 2616 packet[6+248] = 0; 2617 log_info("local name: %s", &packet[6]); 2618 break; 2619 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2620 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2621 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2622 uint16_t acl_len = little_endian_read_16(packet, 6); 2623 uint16_t sco_len = packet[8]; 2624 2625 // determine usable ACL/SCO payload size 2626 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2627 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2628 2629 hci_stack->acl_packets_total_num = (uint8_t) little_endian_read_16(packet, 9); 2630 hci_stack->sco_packets_total_num = (uint8_t) little_endian_read_16(packet, 11); 2631 2632 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2633 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2634 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2635 } 2636 break; 2637 case HCI_OPCODE_HCI_READ_RSSI: 2638 if (packet[5] == ERROR_CODE_SUCCESS){ 2639 uint8_t event[5]; 2640 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2641 event[1] = 3; 2642 (void)memcpy(&event[2], &packet[6], 3); 2643 hci_emit_event(event, sizeof(event), 1); 2644 } 2645 break; 2646 #ifdef ENABLE_BLE 2647 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2648 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2649 hci_stack->le_iso_packets_total_num = packet[11]; 2650 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2651 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2652 2653 /* fall through */ 2654 2655 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2656 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2657 hci_stack->le_acl_packets_total_num = packet[8]; 2658 // determine usable ACL payload size 2659 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2660 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2661 } 2662 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); 2663 break; 2664 #endif 2665 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2666 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2667 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2668 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2669 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); 2670 break; 2671 #endif 2672 #ifdef ENABLE_LE_CENTRAL 2673 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2674 hci_stack->le_whitelist_capacity = packet[6]; 2675 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2676 break; 2677 #endif 2678 #ifdef ENABLE_LE_PERIPHERAL 2679 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2680 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2681 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2682 break; 2683 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2684 if (hci_stack->le_advertising_set_in_current_command != 0) { 2685 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2686 hci_stack->le_advertising_set_in_current_command = 0; 2687 if (advertising_set == NULL) break; 2688 uint8_t adv_status = packet[6]; 2689 uint8_t tx_power = packet[7]; 2690 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 }; 2691 if (adv_status == 0){ 2692 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2693 } 2694 hci_emit_event(event, sizeof(event), 1); 2695 } 2696 break; 2697 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2698 if (hci_stack->le_advertising_set_in_current_command != 0) { 2699 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2700 hci_stack->le_advertising_set_in_current_command = 0; 2701 if (advertising_set == NULL) break; 2702 uint8_t adv_status = packet[5]; 2703 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2704 if (adv_status == 0){ 2705 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2706 } 2707 hci_emit_event(event, sizeof(event), 1); 2708 } 2709 break; 2710 #endif 2711 #endif 2712 case HCI_OPCODE_HCI_READ_BD_ADDR: 2713 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2714 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)); 2715 #ifdef ENABLE_CLASSIC 2716 if (hci_stack->link_key_db){ 2717 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2718 } 2719 #endif 2720 break; 2721 #ifdef ENABLE_CLASSIC 2722 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2723 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2724 break; 2725 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2726 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2727 if (status == ERROR_CODE_SUCCESS) { 2728 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2729 } else { 2730 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2731 } 2732 break; 2733 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2734 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2735 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2736 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2737 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2738 hci_emit_event(event, sizeof(event), 1); 2739 } 2740 break; 2741 #endif 2742 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2743 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2744 2745 #ifdef ENABLE_CLASSIC 2746 // determine usable ACL packet types based on host buffer size and supported features 2747 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2748 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2749 #endif 2750 // Classic/LE 2751 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2752 break; 2753 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2754 manufacturer = little_endian_read_16(packet, 10); 2755 // map Cypress to Broadcom 2756 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2757 log_info("Treat Cypress as Broadcom"); 2758 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2759 little_endian_store_16(packet, 10, manufacturer); 2760 } 2761 hci_stack->manufacturer = manufacturer; 2762 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2763 break; 2764 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2765 hci_store_local_supported_commands(packet); 2766 break; 2767 #ifdef ENABLE_CLASSIC 2768 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2769 if (packet[5]) return; 2770 hci_stack->synchronous_flow_control_enabled = 1; 2771 break; 2772 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2773 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2774 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2775 conn = hci_connection_for_handle(handle); 2776 if (conn != NULL) { 2777 uint8_t key_size = 0; 2778 if (status == 0){ 2779 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2780 log_info("Handle %04x key Size: %u", handle, key_size); 2781 } else { 2782 key_size = 1; 2783 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2784 } 2785 hci_handle_read_encryption_key_size_complete(conn, key_size); 2786 } 2787 break; 2788 // assert pairing complete event is emitted. 2789 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2790 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2791 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2792 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2793 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2794 // lookup connection by gap pairing addr 2795 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2796 if (conn == NULL) break; 2797 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2798 break; 2799 2800 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2801 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2802 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2803 uint8_t event[67]; 2804 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2805 event[1] = 65; 2806 (void)memset(&event[2], 0, 65); 2807 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2808 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2809 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2810 event[2] = 3; 2811 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2812 } else { 2813 event[2] = 1; 2814 } 2815 } 2816 hci_emit_event(event, sizeof(event), 0); 2817 break; 2818 } 2819 2820 // note: only needed if user does not provide OOB data 2821 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2822 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2823 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2824 if (conn == NULL) break; 2825 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2826 break; 2827 #endif 2828 #endif 2829 #ifdef ENABLE_BLE 2830 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2831 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2832 // lookup CIG 2833 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2834 if (cig != NULL){ 2835 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2836 uint8_t i = 0; 2837 if (status == ERROR_CODE_SUCCESS){ 2838 // assign CIS handles to pre-allocated CIS 2839 btstack_linked_list_iterator_t it; 2840 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2841 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2842 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2843 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2844 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2845 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2846 iso_stream->con_handle = cis_handle; 2847 cig->cis_con_handles[i] = cis_handle; 2848 i++; 2849 } 2850 } 2851 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2852 hci_emit_cig_created(cig, status); 2853 } else { 2854 hci_emit_cig_created(cig, status); 2855 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2856 } 2857 } 2858 hci_stack->iso_active_operation_group_id = 0xff; 2859 break; 2860 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2861 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2862 if (status != ERROR_CODE_SUCCESS){ 2863 hci_iso_stream_requested_finalize(0xff); 2864 } 2865 break; 2866 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2867 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2868 if (status != ERROR_CODE_SUCCESS){ 2869 hci_iso_stream_requested_finalize(0xff); 2870 } 2871 break; 2872 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2873 // lookup BIG by state 2874 btstack_linked_list_iterator_t it; 2875 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2876 while (btstack_linked_list_iterator_has_next(&it)) { 2877 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2878 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2879 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2880 if (status == ERROR_CODE_SUCCESS){ 2881 big->state_vars.next_bis++; 2882 if (big->state_vars.next_bis == big->num_bis){ 2883 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2884 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2885 } else { 2886 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2887 } 2888 } else { 2889 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2890 big->state_vars.status = status; 2891 } 2892 return; 2893 } 2894 } 2895 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2896 while (btstack_linked_list_iterator_has_next(&it)) { 2897 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2898 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2899 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2900 if (status == ERROR_CODE_SUCCESS){ 2901 big_sync->state_vars.next_bis++; 2902 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2903 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2904 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2905 } else { 2906 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2907 } 2908 } else { 2909 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2910 big_sync->state_vars.status = status; 2911 } 2912 return; 2913 } 2914 } 2915 break; 2916 } 2917 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2918 // lookup BIG by state 2919 btstack_linked_list_iterator_t it; 2920 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2921 while (btstack_linked_list_iterator_has_next(&it)) { 2922 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2923 uint8_t big_handle = big_sync->big_handle; 2924 switch (big_sync->state){ 2925 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 2926 btstack_linked_list_iterator_remove(&it); 2927 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 2928 return; 2929 default: 2930 btstack_linked_list_iterator_remove(&it); 2931 hci_emit_big_sync_stopped(big_handle); 2932 return; 2933 } 2934 } 2935 break; 2936 } 2937 #endif 2938 #endif 2939 default: 2940 break; 2941 } 2942 } 2943 2944 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 2945 UNUSED(size); 2946 2947 // get num cmd packets - limit to 1 to reduce complexity 2948 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2949 2950 // get opcode and command status 2951 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 2952 2953 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 2954 uint8_t status = hci_event_command_status_get_status(packet); 2955 #endif 2956 2957 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2958 bd_addr_type_t addr_type; 2959 #endif 2960 2961 switch (opcode){ 2962 #ifdef ENABLE_CLASSIC 2963 case HCI_OPCODE_HCI_CREATE_CONNECTION: 2964 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 2965 #endif 2966 #ifdef ENABLE_LE_CENTRAL 2967 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 2968 #endif 2969 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2970 addr_type = hci_stack->outgoing_addr_type; 2971 2972 // reset outgoing address info 2973 memset(hci_stack->outgoing_addr, 0, 6); 2974 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2975 2976 // on error 2977 if (status != ERROR_CODE_SUCCESS){ 2978 #ifdef ENABLE_LE_CENTRAL 2979 if (hci_is_le_connection_type(addr_type)){ 2980 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2981 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2982 } 2983 #endif 2984 // error => outgoing connection failed 2985 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2986 if (conn != NULL){ 2987 hci_handle_connection_failed(conn, status); 2988 } 2989 } 2990 break; 2991 #endif 2992 #ifdef ENABLE_CLASSIC 2993 case HCI_OPCODE_HCI_INQUIRY: 2994 if (status == ERROR_CODE_SUCCESS) { 2995 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 2996 } else { 2997 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2998 } 2999 break; 3000 #endif 3001 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3002 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3003 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3004 if (status == ERROR_CODE_SUCCESS){ 3005 hci_iso_stream_requested_confirm(0xff); 3006 } else { 3007 hci_iso_stream_requested_finalize(0xff); 3008 } 3009 break; 3010 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3011 default: 3012 break; 3013 } 3014 } 3015 3016 #ifdef ENABLE_BLE 3017 static void event_handle_le_connection_complete(const uint8_t * packet){ 3018 bd_addr_t addr; 3019 bd_addr_type_t addr_type; 3020 hci_connection_t * conn; 3021 3022 // Connection management 3023 reverse_bd_addr(&packet[8], addr); 3024 addr_type = (bd_addr_type_t)packet[7]; 3025 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3026 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3027 3028 #ifdef ENABLE_LE_CENTRAL 3029 // handle error: error is reported only to the initiator -> outgoing connection 3030 if (packet[3]){ 3031 3032 // handle cancelled outgoing connection 3033 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3034 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3035 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3036 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3037 // reset state 3038 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3039 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3040 // get outgoing connection conn struct for direct connect 3041 conn = gap_get_outgoing_connection(); 3042 } 3043 3044 // outgoing le connection establishment is done 3045 if (conn){ 3046 // remove entry 3047 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3048 btstack_memory_hci_connection_free( conn ); 3049 } 3050 return; 3051 } 3052 #endif 3053 3054 // on success, both hosts receive connection complete event 3055 if (packet[6] == HCI_ROLE_MASTER){ 3056 #ifdef ENABLE_LE_CENTRAL 3057 // if we're master on an le connection, it was an outgoing connection and we're done with it 3058 // note: no hci_connection_t object exists yet for connect with whitelist 3059 if (hci_is_le_connection_type(addr_type)){ 3060 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3061 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3062 } 3063 #endif 3064 } else { 3065 #ifdef ENABLE_LE_PERIPHERAL 3066 // if we're slave, it was an incoming connection, advertisements have stopped 3067 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3068 #endif 3069 } 3070 3071 // LE connections are auto-accepted, so just create a connection if there isn't one already 3072 if (!conn){ 3073 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3074 } 3075 3076 // no memory, sorry. 3077 if (!conn){ 3078 return; 3079 } 3080 3081 conn->state = OPEN; 3082 conn->role = packet[6]; 3083 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3084 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3085 3086 #ifdef ENABLE_LE_PERIPHERAL 3087 if (packet[6] == HCI_ROLE_SLAVE){ 3088 hci_update_advertisements_enabled_for_current_roles(); 3089 } 3090 #endif 3091 3092 // init unenhanced att bearer mtu 3093 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3094 conn->att_connection.mtu_exchanged = false; 3095 3096 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3097 3098 // restart timer 3099 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3100 // btstack_run_loop_add_timer(&conn->timeout); 3101 3102 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3103 3104 hci_emit_nr_connections_changed(); 3105 } 3106 #endif 3107 3108 #ifdef ENABLE_CLASSIC 3109 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){ 3110 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3111 // LEVEL_4 is tested by l2cap 3112 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3113 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3114 if (level >= LEVEL_3){ 3115 // MITM not possible without keyboard or display 3116 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3117 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3118 3119 // MITM possible if one side has keyboard and the other has keyboard or display 3120 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3121 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3122 3123 // MITM not possible if one side has only display and other side has no keyboard 3124 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3125 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3126 } 3127 // LEVEL 2 requires SSP, which is a given 3128 return true; 3129 } 3130 3131 static bool btstack_is_null(uint8_t * data, uint16_t size){ 3132 uint16_t i; 3133 for (i=0; i < size ; i++){ 3134 if (data[i] != 0) { 3135 return false; 3136 } 3137 } 3138 return true; 3139 } 3140 3141 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3142 // get requested security level 3143 gap_security_level_t requested_security_level = conn->requested_security_level; 3144 if (hci_stack->gap_secure_connections_only_mode){ 3145 requested_security_level = LEVEL_4; 3146 } 3147 3148 // assess security: LEVEL 4 requires SC 3149 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3150 if ((requested_security_level == LEVEL_4) && 3151 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3152 !hci_remote_sc_enabled(conn)){ 3153 log_info("Level 4 required, but SC not supported -> abort"); 3154 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3155 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3156 return; 3157 } 3158 3159 // assess security based on io capabilities 3160 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3161 // responder: fully validate io caps of both sides as well as OOB data 3162 bool security_possible = false; 3163 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3164 3165 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3166 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3167 // so we merge the OOB data availability 3168 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3169 if (conn->classic_oob_c_192 != NULL){ 3170 have_oob_data |= 1; 3171 } 3172 if (conn->classic_oob_c_256 != NULL){ 3173 have_oob_data |= 2; 3174 } 3175 // for up to Level 3, either P-192 as well as P-256 will do 3176 // 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 3177 // if remote does not SC, we should not receive P-256 data either 3178 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3179 security_possible = true; 3180 } 3181 // for Level 4, P-256 is needed 3182 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3183 security_possible = true; 3184 } 3185 #endif 3186 3187 if (security_possible == false){ 3188 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3189 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3190 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3191 return; 3192 } 3193 } else { 3194 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3195 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3196 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3197 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3198 log_info("Level 3+ required, but no input/output -> abort"); 3199 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3200 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3201 return; 3202 } 3203 #endif 3204 #endif 3205 } 3206 3207 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3208 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3209 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3210 } else { 3211 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3212 } 3213 #endif 3214 } 3215 3216 #endif 3217 3218 static void event_handler(uint8_t *packet, uint16_t size){ 3219 3220 uint16_t event_length = packet[1]; 3221 3222 // assert packet is complete 3223 if (size != (event_length + 2u)){ 3224 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3225 return; 3226 } 3227 3228 hci_con_handle_t handle; 3229 hci_connection_t * conn; 3230 int i; 3231 3232 #ifdef ENABLE_CLASSIC 3233 hci_link_type_t link_type; 3234 bd_addr_t addr; 3235 bd_addr_type_t addr_type; 3236 #endif 3237 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3238 hci_iso_stream_t * iso_stream; 3239 le_audio_big_t * big; 3240 le_audio_big_sync_t * big_sync; 3241 #endif 3242 3243 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3244 3245 switch (hci_event_packet_get_type(packet)) { 3246 3247 case HCI_EVENT_COMMAND_COMPLETE: 3248 handle_command_complete_event(packet, size); 3249 break; 3250 3251 case HCI_EVENT_COMMAND_STATUS: 3252 handle_command_status_event(packet, size); 3253 break; 3254 3255 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3256 if (size < 3) return; 3257 uint16_t num_handles = packet[2]; 3258 if (size != (3u + num_handles * 4u)) return; 3259 #ifdef ENABLE_CLASSIC 3260 bool notify_sco = false; 3261 #endif 3262 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3263 bool notify_iso = false; 3264 #endif 3265 uint16_t offset = 3; 3266 for (i=0; i<num_handles;i++){ 3267 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3268 offset += 2u; 3269 uint16_t num_packets = little_endian_read_16(packet, offset); 3270 offset += 2u; 3271 3272 conn = hci_connection_for_handle(handle); 3273 if (conn != NULL) { 3274 3275 if (conn->num_packets_sent >= num_packets) { 3276 conn->num_packets_sent -= num_packets; 3277 } else { 3278 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3279 conn->num_packets_sent = 0; 3280 } 3281 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3282 #ifdef ENABLE_CLASSIC 3283 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3284 notify_sco = true; 3285 } 3286 #endif 3287 } 3288 3289 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3290 hci_controller_dump_packets(); 3291 #endif 3292 3293 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3294 if (conn == NULL){ 3295 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3296 if (iso_stream != NULL){ 3297 if (iso_stream->num_packets_sent >= num_packets) { 3298 iso_stream->num_packets_sent -= num_packets; 3299 } else { 3300 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3301 iso_stream->num_packets_sent = 0; 3302 } 3303 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3304 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3305 if (big != NULL){ 3306 big->num_completed_timestamp_current_valid = true; 3307 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3308 } 3309 } 3310 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3311 num_packets, handle, iso_stream->num_packets_sent); 3312 notify_iso = true; 3313 } 3314 } 3315 #endif 3316 } 3317 3318 #ifdef ENABLE_CLASSIC 3319 if (notify_sco){ 3320 hci_notify_if_sco_can_send_now(); 3321 } 3322 #endif 3323 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3324 if (notify_iso){ 3325 hci_iso_notify_can_send_now(); 3326 } 3327 #endif 3328 break; 3329 } 3330 3331 #ifdef ENABLE_CLASSIC 3332 case HCI_EVENT_FLUSH_OCCURRED: 3333 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3334 handle = hci_event_flush_occurred_get_handle(packet); 3335 conn = hci_connection_for_handle(handle); 3336 if (conn) { 3337 log_info("Flush occurred, disconnect 0x%04x", handle); 3338 conn->state = SEND_DISCONNECT; 3339 } 3340 break; 3341 3342 case HCI_EVENT_INQUIRY_COMPLETE: 3343 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3344 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3345 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3346 hci_emit_event(event, sizeof(event), 1); 3347 } 3348 break; 3349 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3350 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3351 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3352 } 3353 break; 3354 case HCI_EVENT_CONNECTION_REQUEST: 3355 reverse_bd_addr(&packet[2], addr); 3356 link_type = (hci_link_type_t) packet[11]; 3357 3358 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3359 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3360 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3361 bd_addr_copy(hci_stack->decline_addr, addr); 3362 break; 3363 } 3364 3365 if (hci_stack->gap_classic_accept_callback != NULL){ 3366 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3367 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3368 bd_addr_copy(hci_stack->decline_addr, addr); 3369 break; 3370 } 3371 } 3372 3373 // TODO: eval COD 8-10 3374 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3375 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3376 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3377 if (!conn) { 3378 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3379 } 3380 if (!conn) { 3381 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3382 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3383 bd_addr_copy(hci_stack->decline_addr, addr); 3384 hci_run(); 3385 // avoid event to higher layer 3386 return; 3387 } 3388 conn->role = HCI_ROLE_SLAVE; 3389 conn->state = RECEIVED_CONNECTION_REQUEST; 3390 // store info about eSCO 3391 if (link_type == HCI_LINK_TYPE_ESCO){ 3392 conn->remote_supported_features[0] |= 1; 3393 } 3394 hci_run(); 3395 break; 3396 3397 case HCI_EVENT_CONNECTION_COMPLETE: 3398 // Connection management 3399 reverse_bd_addr(&packet[5], addr); 3400 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3401 addr_type = BD_ADDR_TYPE_ACL; 3402 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3403 if (conn) { 3404 if (!packet[2]){ 3405 conn->state = OPEN; 3406 conn->con_handle = little_endian_read_16(packet, 3); 3407 3408 // trigger write supervision timeout if we're master 3409 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3410 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3411 } 3412 3413 // trigger write automatic flush timeout 3414 if (hci_stack->automatic_flush_timeout != 0){ 3415 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3416 } 3417 3418 // restart timer 3419 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3420 btstack_run_loop_add_timer(&conn->timeout); 3421 3422 // trigger remote features for dedicated bonding 3423 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3424 hci_trigger_remote_features_for_connection(conn); 3425 } 3426 3427 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3428 3429 hci_emit_nr_connections_changed(); 3430 } else { 3431 // connection failed 3432 hci_handle_connection_failed(conn, packet[2]); 3433 } 3434 } 3435 break; 3436 3437 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3438 reverse_bd_addr(&packet[5], addr); 3439 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3440 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3441 if (packet[2]){ 3442 // connection failed 3443 if (conn){ 3444 hci_handle_connection_failed(conn, packet[2]); 3445 } 3446 break; 3447 } 3448 if (!conn) { 3449 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3450 } 3451 if (!conn) { 3452 break; 3453 } 3454 conn->state = OPEN; 3455 conn->con_handle = little_endian_read_16(packet, 3); 3456 3457 #ifdef ENABLE_SCO_OVER_HCI 3458 // update SCO 3459 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3460 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3461 } 3462 // trigger can send now 3463 if (hci_have_usb_transport()){ 3464 hci_stack->sco_can_send_now = true; 3465 } 3466 #endif 3467 #ifdef HAVE_SCO_TRANSPORT 3468 // configure sco transport 3469 if (hci_stack->sco_transport != NULL){ 3470 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3471 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3472 } 3473 #endif 3474 break; 3475 3476 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3477 handle = little_endian_read_16(packet, 3); 3478 conn = hci_connection_for_handle(handle); 3479 if (!conn) break; 3480 if (!packet[2]){ 3481 const uint8_t * features = &packet[5]; 3482 hci_handle_remote_features_page_0(conn, features); 3483 3484 // read extended features if possible 3485 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3486 && ((conn->remote_supported_features[0] & 2) != 0)) { 3487 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3488 break; 3489 } 3490 } 3491 hci_handle_remote_features_received(conn); 3492 break; 3493 3494 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3495 handle = little_endian_read_16(packet, 3); 3496 conn = hci_connection_for_handle(handle); 3497 if (!conn) break; 3498 // status = ok, page = 1 3499 if (!packet[2]) { 3500 uint8_t page_number = packet[5]; 3501 uint8_t maximum_page_number = packet[6]; 3502 const uint8_t * features = &packet[7]; 3503 bool done = false; 3504 switch (page_number){ 3505 case 1: 3506 hci_handle_remote_features_page_1(conn, features); 3507 if (maximum_page_number >= 2){ 3508 // get Secure Connections (Controller) from Page 2 if available 3509 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3510 } else { 3511 // otherwise, assume SC (Controller) == SC (Host) 3512 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3513 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3514 } 3515 done = true; 3516 } 3517 break; 3518 case 2: 3519 hci_handle_remote_features_page_2(conn, features); 3520 done = true; 3521 break; 3522 default: 3523 break; 3524 } 3525 if (!done) break; 3526 } 3527 hci_handle_remote_features_received(conn); 3528 break; 3529 3530 case HCI_EVENT_LINK_KEY_REQUEST: 3531 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3532 hci_event_link_key_request_get_bd_addr(packet, addr); 3533 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3534 if (!conn) break; 3535 3536 // lookup link key in db if not cached 3537 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3538 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3539 } 3540 3541 // response sent by hci_run() 3542 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3543 #endif 3544 break; 3545 3546 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3547 hci_event_link_key_request_get_bd_addr(packet, addr); 3548 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3549 if (!conn) break; 3550 3551 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3552 3553 // CVE-2020-26555: ignore NULL link key 3554 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3555 if (btstack_is_null(&packet[8], 16)) break; 3556 3557 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3558 // Change Connection Encryption keeps link key type 3559 if (link_key_type != CHANGED_COMBINATION_KEY){ 3560 conn->link_key_type = link_key_type; 3561 } 3562 3563 // cache link key. link keys stored in little-endian format for legacy reasons 3564 memcpy(&conn->link_key, &packet[8], 16); 3565 3566 // only store link key: 3567 // - if bondable enabled 3568 if (hci_stack->bondable == false) break; 3569 // - if security level sufficient 3570 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3571 // - for SSP, also check if remote side requested bonding as well 3572 if (conn->link_key_type != COMBINATION_KEY){ 3573 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3574 if (!remote_bonding){ 3575 break; 3576 } 3577 } 3578 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3579 break; 3580 } 3581 3582 case HCI_EVENT_PIN_CODE_REQUEST: 3583 hci_event_pin_code_request_get_bd_addr(packet, addr); 3584 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3585 if (!conn) break; 3586 3587 hci_pairing_started(conn, false); 3588 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3589 if (!hci_stack->bondable ){ 3590 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3591 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3592 hci_run(); 3593 return; 3594 } 3595 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3596 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3597 log_info("Level 4 required, but SC not supported -> abort"); 3598 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3599 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3600 hci_run(); 3601 return; 3602 } 3603 break; 3604 3605 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3606 hci_event_io_capability_response_get_bd_addr(packet, addr); 3607 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3608 if (!conn) break; 3609 3610 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3611 hci_pairing_started(conn, true); 3612 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3613 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3614 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3615 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3616 #endif 3617 break; 3618 3619 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3620 hci_event_io_capability_response_get_bd_addr(packet, addr); 3621 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3622 if (!conn) break; 3623 3624 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3625 hci_connection_timestamp(conn); 3626 hci_pairing_started(conn, true); 3627 break; 3628 3629 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3630 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3631 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3632 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3633 if (!conn) break; 3634 3635 hci_connection_timestamp(conn); 3636 3637 hci_pairing_started(conn, true); 3638 3639 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3640 break; 3641 #endif 3642 3643 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3644 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3645 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3646 if (!conn) break; 3647 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3648 if (hci_stack->ssp_auto_accept){ 3649 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3650 }; 3651 } else { 3652 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3653 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3654 // don't forward event to app 3655 hci_run(); 3656 return; 3657 } 3658 break; 3659 3660 case HCI_EVENT_USER_PASSKEY_REQUEST: 3661 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3662 if (hci_stack->ssp_auto_accept){ 3663 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3664 }; 3665 break; 3666 3667 case HCI_EVENT_MODE_CHANGE: 3668 handle = hci_event_mode_change_get_handle(packet); 3669 conn = hci_connection_for_handle(handle); 3670 if (!conn) break; 3671 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3672 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3673 break; 3674 #endif 3675 3676 case HCI_EVENT_ENCRYPTION_CHANGE: 3677 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3678 handle = hci_event_encryption_change_get_connection_handle(packet); 3679 conn = hci_connection_for_handle(handle); 3680 if (!conn) break; 3681 if (hci_event_encryption_change_get_status(packet) == 0u) { 3682 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3683 if (encryption_enabled){ 3684 if (hci_is_le_connection(conn)){ 3685 // For LE, we accept connection as encrypted 3686 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3687 } 3688 #ifdef ENABLE_CLASSIC 3689 else { 3690 3691 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3692 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3693 bool connected_uses_aes_ccm = encryption_enabled == 2; 3694 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3695 log_info("SC during pairing, but only E0 now -> abort"); 3696 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3697 break; 3698 } 3699 3700 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3701 if (connected_uses_aes_ccm){ 3702 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3703 } 3704 3705 #ifdef ENABLE_TESTING_SUPPORT 3706 // work around for issue with PTS dongle 3707 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3708 #endif 3709 // validate encryption key size 3710 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3711 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3712 // already got encryption key size 3713 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3714 } else { 3715 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3716 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3717 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3718 } else { 3719 // if not, pretend everything is perfect 3720 hci_handle_read_encryption_key_size_complete(conn, 16); 3721 } 3722 } 3723 } 3724 #endif 3725 } else { 3726 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3727 } 3728 } else { 3729 uint8_t status = hci_event_encryption_change_get_status(packet); 3730 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3731 conn->bonding_flags &= ~BONDING_DEDICATED; 3732 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3733 conn->bonding_status = status; 3734 } 3735 } 3736 3737 break; 3738 3739 #ifdef ENABLE_CLASSIC 3740 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3741 handle = hci_event_authentication_complete_get_connection_handle(packet); 3742 conn = hci_connection_for_handle(handle); 3743 if (!conn) break; 3744 3745 // clear authentication active flag 3746 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3747 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3748 3749 // authenticated only if auth status == 0 3750 if (hci_event_authentication_complete_get_status(packet) == 0){ 3751 // authenticated 3752 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3753 3754 // If not already encrypted, start encryption 3755 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3756 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3757 break; 3758 } 3759 } 3760 3761 // emit updated security level 3762 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3763 break; 3764 3765 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3766 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3767 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3768 if (!conn) break; 3769 3770 // treat successfully paired connection as authenticated 3771 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3772 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3773 } 3774 3775 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3776 break; 3777 #endif 3778 3779 // HCI_EVENT_DISCONNECTION_COMPLETE 3780 // has been split, to first notify stack before shutting connection down 3781 // see end of function, too. 3782 case HCI_EVENT_DISCONNECTION_COMPLETE: 3783 if (packet[2]) break; // status != 0 3784 handle = little_endian_read_16(packet, 3); 3785 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3786 if (hci_stack->acl_fragmentation_total_size > 0u) { 3787 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3788 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3789 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3790 hci_stack->acl_fragmentation_total_size = 0; 3791 hci_stack->acl_fragmentation_pos = 0; 3792 if (release_buffer){ 3793 hci_release_packet_buffer(); 3794 } 3795 } 3796 } 3797 3798 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3799 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3800 if (hci_stack->iso_fragmentation_total_size > 0u) { 3801 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3802 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3803 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3804 hci_stack->iso_fragmentation_total_size = 0; 3805 hci_stack->iso_fragmentation_pos = 0; 3806 if (release_buffer){ 3807 hci_release_packet_buffer(); 3808 } 3809 } 3810 } 3811 3812 // finalize iso stream if handle matches 3813 iso_stream = hci_iso_stream_for_con_handle(handle); 3814 if (iso_stream != NULL){ 3815 hci_iso_stream_finalize(iso_stream); 3816 break; 3817 } 3818 #endif 3819 3820 conn = hci_connection_for_handle(handle); 3821 if (!conn) break; 3822 #ifdef ENABLE_CLASSIC 3823 // pairing failed if it was ongoing 3824 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3825 #endif 3826 3827 // emit dedicatd bonding event 3828 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3829 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3830 } 3831 3832 // mark connection for shutdown, stop timers, reset state 3833 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3834 hci_connection_stop_timer(conn); 3835 hci_connection_init(conn); 3836 3837 #ifdef ENABLE_BLE 3838 #ifdef ENABLE_LE_PERIPHERAL 3839 // re-enable advertisements for le connections if active 3840 if (hci_is_le_connection(conn)){ 3841 hci_update_advertisements_enabled_for_current_roles(); 3842 } 3843 #endif 3844 #endif 3845 break; 3846 3847 case HCI_EVENT_HARDWARE_ERROR: 3848 log_error("Hardware Error: 0x%02x", packet[2]); 3849 if (hci_stack->hardware_error_callback){ 3850 (*hci_stack->hardware_error_callback)(packet[2]); 3851 } else { 3852 // if no special requests, just reboot stack 3853 hci_power_control_off(); 3854 hci_power_control_on(); 3855 } 3856 break; 3857 3858 #ifdef ENABLE_CLASSIC 3859 case HCI_EVENT_ROLE_CHANGE: 3860 if (packet[2]) break; // status != 0 3861 reverse_bd_addr(&packet[3], addr); 3862 addr_type = BD_ADDR_TYPE_ACL; 3863 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3864 if (!conn) break; 3865 conn->role = packet[9]; 3866 break; 3867 #endif 3868 3869 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3870 // release packet buffer only for asynchronous transport and if there are not further fragments 3871 if (hci_transport_synchronous()) { 3872 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3873 return; // instead of break: to avoid re-entering hci_run() 3874 } 3875 hci_stack->acl_fragmentation_tx_active = 0; 3876 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3877 hci_stack->iso_fragmentation_tx_active = 0; 3878 if (hci_stack->iso_fragmentation_total_size) break; 3879 #endif 3880 if (hci_stack->acl_fragmentation_total_size) break; 3881 hci_release_packet_buffer(); 3882 3883 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3884 hci_iso_notify_can_send_now(); 3885 #endif 3886 // L2CAP receives this event via the hci_emit_event below 3887 3888 #ifdef ENABLE_CLASSIC 3889 // For SCO, we do the can_send_now_check here 3890 hci_notify_if_sco_can_send_now(); 3891 #endif 3892 break; 3893 3894 #ifdef ENABLE_CLASSIC 3895 case HCI_EVENT_SCO_CAN_SEND_NOW: 3896 // For SCO, we do the can_send_now_check here 3897 hci_stack->sco_can_send_now = true; 3898 hci_notify_if_sco_can_send_now(); 3899 return; 3900 3901 // explode inquriy results for easier consumption 3902 case HCI_EVENT_INQUIRY_RESULT: 3903 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3904 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3905 gap_inquiry_explode(packet, size); 3906 break; 3907 #endif 3908 3909 #ifdef ENABLE_BLE 3910 case HCI_EVENT_LE_META: 3911 switch (packet[2]){ 3912 #ifdef ENABLE_LE_CENTRAL 3913 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3914 if (!hci_stack->le_scanning_enabled) break; 3915 le_handle_advertisement_report(packet, size); 3916 break; 3917 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3918 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3919 if (!hci_stack->le_scanning_enabled) break; 3920 le_handle_extended_advertisement_report(packet, size); 3921 break; 3922 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 3923 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 3924 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 3925 break; 3926 #endif 3927 #endif 3928 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3929 event_handle_le_connection_complete(packet); 3930 break; 3931 3932 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3933 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 3934 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 3935 conn = hci_connection_for_handle(handle); 3936 if (!conn) break; 3937 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 3938 break; 3939 3940 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 3941 // connection 3942 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 3943 conn = hci_connection_for_handle(handle); 3944 if (conn) { 3945 // read arguments 3946 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 3947 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 3948 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 3949 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 3950 3951 // validate against current connection parameter range 3952 le_connection_parameter_range_t existing_range; 3953 gap_get_connection_parameter_range(&existing_range); 3954 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 3955 if (update_parameter){ 3956 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 3957 conn->le_conn_interval_min = le_conn_interval_min; 3958 conn->le_conn_interval_max = le_conn_interval_max; 3959 conn->le_conn_latency = le_conn_latency; 3960 conn->le_supervision_timeout = le_supervision_timeout; 3961 } else { 3962 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 3963 } 3964 } 3965 break; 3966 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 3967 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 3968 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 3969 conn = hci_connection_for_handle(handle); 3970 if (conn) { 3971 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 3972 } 3973 break; 3974 #endif 3975 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3976 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 3977 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 3978 iso_stream = hci_iso_stream_for_con_handle(handle); 3979 if (iso_stream){ 3980 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 3981 uint8_t cig_id = iso_stream->group_id; 3982 if (status == ERROR_CODE_SUCCESS){ 3983 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3984 } else { 3985 hci_iso_stream_finalize(iso_stream); 3986 } 3987 // CIG/CIS 3988 if (iso_stream->iso_type == HCI_ISO_TYPE_CIS){ 3989 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 3990 if (cig){ 3991 uint8_t i; 3992 for (i=0;i<cig->num_cis;i++){ 3993 if (cig->cis_con_handles[i] == handle){ 3994 cig->cis_setup_active[i] = false; 3995 hci_emit_cis_created(cig_id, handle, status); 3996 } 3997 } 3998 } 3999 } 4000 } 4001 break; 4002 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4003 hci_stack->iso_active_operation_group_id = 0xff; 4004 big = hci_big_for_handle(packet[4]); 4005 if (big != NULL){ 4006 uint8_t status = packet[3]; 4007 if (status == ERROR_CODE_SUCCESS){ 4008 // store bis_con_handles and trigger iso path setup 4009 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4010 uint8_t i; 4011 for (i=0;i<num_bis;i++){ 4012 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4013 big->bis_con_handles[i] = bis_handle; 4014 // assign bis handle 4015 btstack_linked_list_iterator_t it; 4016 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4017 while (btstack_linked_list_iterator_has_next(&it)){ 4018 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4019 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4020 (iso_stream->group_id == big->big_handle)){ 4021 iso_stream->con_handle = bis_handle; 4022 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4023 break; 4024 } 4025 } 4026 } 4027 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4028 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4029 big->state_vars.next_bis = 0; 4030 } 4031 } else { 4032 // create BIG failed or has been stopped by us 4033 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4034 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4035 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4036 hci_emit_big_created(big, status); 4037 } else { 4038 hci_emit_big_terminated(big); 4039 } 4040 } 4041 } 4042 break; 4043 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4044 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4045 if (big != NULL){ 4046 // finalize associated ISO streams 4047 btstack_linked_list_iterator_t it; 4048 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4049 while (btstack_linked_list_iterator_has_next(&it)){ 4050 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4051 if (iso_stream->group_id == big->big_handle){ 4052 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->con_handle); 4053 btstack_linked_list_iterator_remove(&it); 4054 btstack_memory_hci_iso_stream_free(iso_stream); 4055 } 4056 } 4057 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4058 switch (big->state){ 4059 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4060 hci_emit_big_created(big, big->state_vars.status); 4061 break; 4062 default: 4063 hci_emit_big_terminated(big); 4064 break; 4065 } 4066 } 4067 break; 4068 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4069 big_sync = hci_big_sync_for_handle(packet[4]); 4070 if (big_sync != NULL){ 4071 uint8_t status = packet[3]; 4072 uint8_t big_handle = packet[4]; 4073 if (status == ERROR_CODE_SUCCESS){ 4074 // store bis_con_handles and trigger iso path setup 4075 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4076 uint8_t i; 4077 for (i=0;i<num_bis;i++){ 4078 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4079 } 4080 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4081 // trigger iso path setup 4082 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4083 big_sync->state_vars.next_bis = 0; 4084 } 4085 } else { 4086 // create BIG Sync failed or has been stopped by us 4087 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4088 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4089 hci_emit_big_sync_created(big_sync, status); 4090 } else { 4091 hci_emit_big_sync_stopped(big_handle); 4092 } 4093 } 4094 } 4095 break; 4096 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4097 big_sync = hci_big_sync_for_handle(packet[4]); 4098 if (big_sync != NULL){ 4099 uint8_t big_handle = packet[4]; 4100 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4101 hci_emit_big_sync_stopped(big_handle); 4102 } 4103 break; 4104 #endif 4105 default: 4106 break; 4107 } 4108 break; 4109 #endif 4110 case HCI_EVENT_VENDOR_SPECIFIC: 4111 // Vendor specific commands often create vendor specific event instead of num completed packets 4112 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4113 switch (hci_stack->manufacturer){ 4114 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4115 hci_stack->num_cmd_packets = 1; 4116 break; 4117 default: 4118 break; 4119 } 4120 break; 4121 default: 4122 break; 4123 } 4124 4125 handle_event_for_current_stack_state(packet, size); 4126 4127 // notify upper stack 4128 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4129 4130 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4131 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4132 handle = little_endian_read_16(packet, 3); 4133 hci_connection_t * aConn = hci_connection_for_handle(handle); 4134 // discard connection if app did not trigger a reconnect in the event handler 4135 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4136 hci_shutdown_connection(aConn); 4137 } 4138 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4139 hci_controller_dump_packets(); 4140 #endif 4141 } 4142 4143 // execute main loop 4144 hci_run(); 4145 } 4146 4147 #ifdef ENABLE_CLASSIC 4148 4149 #ifdef ENABLE_SCO_OVER_HCI 4150 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4151 static void sco_schedule_tx(hci_connection_t * conn); 4152 4153 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4154 log_debug("SCO TX Timeout"); 4155 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4156 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4157 if (!conn) return; 4158 4159 // trigger send 4160 conn->sco_tx_ready = 1; 4161 // extra packet if CVSD but SCO buffer is too short 4162 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4163 conn->sco_tx_ready++; 4164 } 4165 hci_notify_if_sco_can_send_now(); 4166 } 4167 4168 4169 #define SCO_TX_AFTER_RX_MS (6) 4170 4171 static void sco_schedule_tx(hci_connection_t * conn){ 4172 4173 uint32_t now = btstack_run_loop_get_time_ms(); 4174 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4175 int time_delta_ms = sco_tx_ms - now; 4176 4177 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4178 4179 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4180 btstack_run_loop_remove_timer(timer); 4181 btstack_run_loop_set_timer(timer, time_delta_ms); 4182 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4183 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4184 btstack_run_loop_add_timer(timer); 4185 } 4186 #endif 4187 4188 static void sco_handler(uint8_t * packet, uint16_t size){ 4189 // lookup connection struct 4190 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4191 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4192 if (!conn) return; 4193 4194 #ifdef ENABLE_SCO_OVER_HCI 4195 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4196 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4197 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4198 packet[2] = 0x3c; 4199 memmove(&packet[3], &packet[23], 63); 4200 size = 63; 4201 } 4202 } 4203 4204 if (hci_have_usb_transport()){ 4205 // Nothing to do 4206 } else { 4207 // 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); 4208 if (hci_stack->synchronous_flow_control_enabled == 0){ 4209 uint32_t now = btstack_run_loop_get_time_ms(); 4210 4211 if (!conn->sco_rx_valid){ 4212 // ignore first 10 packets 4213 conn->sco_rx_count++; 4214 // log_debug("sco rx count %u", conn->sco_rx_count); 4215 if (conn->sco_rx_count == 10) { 4216 // use first timestamp as is and pretent it just started 4217 conn->sco_rx_ms = now; 4218 conn->sco_rx_valid = 1; 4219 conn->sco_rx_count = 0; 4220 sco_schedule_tx(conn); 4221 } 4222 } else { 4223 // track expected arrival timme 4224 conn->sco_rx_count++; 4225 conn->sco_rx_ms += 7; 4226 int delta = (int32_t) (now - conn->sco_rx_ms); 4227 if (delta > 0){ 4228 conn->sco_rx_ms++; 4229 } 4230 // log_debug("sco rx %u", conn->sco_rx_ms); 4231 sco_schedule_tx(conn); 4232 } 4233 } 4234 } 4235 #endif 4236 4237 // deliver to app 4238 if (hci_stack->sco_packet_handler) { 4239 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4240 } 4241 4242 #ifdef HAVE_SCO_TRANSPORT 4243 // We can send one packet for each received packet 4244 conn->sco_tx_ready++; 4245 hci_notify_if_sco_can_send_now(); 4246 #endif 4247 4248 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4249 conn->num_packets_completed++; 4250 hci_stack->host_completed_packets = 1; 4251 hci_run(); 4252 #endif 4253 } 4254 #endif 4255 4256 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4257 hci_dump_packet(packet_type, 1, packet, size); 4258 switch (packet_type) { 4259 case HCI_EVENT_PACKET: 4260 event_handler(packet, size); 4261 break; 4262 case HCI_ACL_DATA_PACKET: 4263 acl_handler(packet, size); 4264 break; 4265 #ifdef ENABLE_CLASSIC 4266 case HCI_SCO_DATA_PACKET: 4267 sco_handler(packet, size); 4268 break; 4269 #endif 4270 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4271 case HCI_ISO_DATA_PACKET: 4272 hci_iso_packet_handler(packet, size); 4273 break; 4274 #endif 4275 default: 4276 break; 4277 } 4278 } 4279 4280 /** 4281 * @brief Add event packet handler. 4282 */ 4283 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4284 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4285 } 4286 4287 /** 4288 * @brief Remove event packet handler. 4289 */ 4290 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4291 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4292 } 4293 4294 /** Register HCI packet handlers */ 4295 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4296 hci_stack->acl_packet_handler = handler; 4297 } 4298 4299 #ifdef ENABLE_CLASSIC 4300 /** 4301 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4302 */ 4303 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4304 hci_stack->sco_packet_handler = handler; 4305 } 4306 #endif 4307 4308 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4309 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4310 hci_stack->iso_packet_handler = handler; 4311 } 4312 #endif 4313 4314 static void hci_state_reset(void){ 4315 // no connections yet 4316 hci_stack->connections = NULL; 4317 4318 // keep discoverable/connectable as this has been requested by the client(s) 4319 // hci_stack->discoverable = 0; 4320 // hci_stack->connectable = 0; 4321 // hci_stack->bondable = 1; 4322 // hci_stack->own_addr_type = 0; 4323 4324 // buffer is free 4325 hci_stack->hci_packet_buffer_reserved = false; 4326 4327 // no pending cmds 4328 hci_stack->decline_reason = 0; 4329 4330 hci_stack->secure_connections_active = false; 4331 4332 #ifdef ENABLE_CLASSIC 4333 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4334 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4335 4336 hci_stack->gap_tasks_classic = 4337 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4338 GAP_TASK_SET_CLASS_OF_DEVICE | 4339 GAP_TASK_SET_LOCAL_NAME | 4340 GAP_TASK_SET_EIR_DATA | 4341 GAP_TASK_WRITE_SCAN_ENABLE | 4342 GAP_TASK_WRITE_PAGE_TIMEOUT; 4343 #endif 4344 4345 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4346 hci_stack->classic_read_local_oob_data = false; 4347 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4348 #endif 4349 4350 // LE 4351 #ifdef ENABLE_BLE 4352 memset(hci_stack->le_random_address, 0, 6); 4353 hci_stack->le_random_address_set = 0; 4354 #endif 4355 #ifdef ENABLE_LE_CENTRAL 4356 hci_stack->le_scanning_active = false; 4357 hci_stack->le_scanning_param_update = true; 4358 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4359 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4360 hci_stack->le_whitelist_capacity = 0; 4361 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4362 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4363 #endif 4364 #endif 4365 #ifdef ENABLE_LE_PERIPHERAL 4366 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4367 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4368 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4369 } 4370 if (hci_stack->le_advertisements_data != NULL){ 4371 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4372 } 4373 #endif 4374 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4375 hci_stack->iso_active_operation_group_id = 0xff; 4376 #endif 4377 } 4378 4379 #ifdef ENABLE_CLASSIC 4380 /** 4381 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4382 */ 4383 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4384 // store and open remote device db 4385 hci_stack->link_key_db = link_key_db; 4386 if (hci_stack->link_key_db) { 4387 hci_stack->link_key_db->open(); 4388 } 4389 } 4390 #endif 4391 4392 void hci_init(const hci_transport_t *transport, const void *config){ 4393 4394 #ifdef HAVE_MALLOC 4395 if (!hci_stack) { 4396 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4397 } 4398 #else 4399 hci_stack = &hci_stack_static; 4400 #endif 4401 memset(hci_stack, 0, sizeof(hci_stack_t)); 4402 4403 // reference to use transport layer implementation 4404 hci_stack->hci_transport = transport; 4405 4406 // reference to used config 4407 hci_stack->config = config; 4408 4409 // setup pointer for outgoing packet buffer 4410 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4411 4412 // max acl payload size defined in config.h 4413 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4414 4415 // register packet handlers with transport 4416 transport->register_packet_handler(&packet_handler); 4417 4418 hci_stack->state = HCI_STATE_OFF; 4419 4420 // class of device 4421 hci_stack->class_of_device = 0x007a020c; // Smartphone 4422 4423 // bondable by default 4424 hci_stack->bondable = 1; 4425 4426 #ifdef ENABLE_CLASSIC 4427 // classic name 4428 hci_stack->local_name = default_classic_name; 4429 4430 // Master slave policy 4431 hci_stack->master_slave_policy = 1; 4432 4433 // Allow Role Switch 4434 hci_stack->allow_role_switch = 1; 4435 4436 // Default / minimum security level = 2 4437 hci_stack->gap_security_level = LEVEL_2; 4438 4439 // Default Security Mode 4 4440 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4441 4442 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4443 hci_stack->gap_required_encyrption_key_size = 7; 4444 4445 // Link Supervision Timeout 4446 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4447 4448 #endif 4449 4450 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4451 hci_stack->ssp_enable = 1; 4452 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4453 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4454 hci_stack->ssp_auto_accept = 1; 4455 4456 // Secure Connections: enable (requires support from Controller) 4457 hci_stack->secure_connections_enable = true; 4458 4459 // voice setting - signed 16 bit pcm data with CVSD over the air 4460 hci_stack->sco_voice_setting = 0x60; 4461 4462 #ifdef ENABLE_LE_CENTRAL 4463 // connection parameter to use for outgoing connections 4464 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4465 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4466 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4467 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4468 hci_stack->le_connection_latency = 4; // 4 4469 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4470 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4471 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4472 4473 // default LE Scanning 4474 hci_stack->le_scan_type = 0x1; // active 4475 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4476 hci_stack->le_scan_window = 0x30; // 30 ms 4477 #endif 4478 4479 #ifdef ENABLE_LE_PERIPHERAL 4480 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4481 #endif 4482 4483 // connection parameter range used to answer connection parameter update requests in l2cap 4484 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4485 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4486 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4487 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4488 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4489 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4490 4491 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4492 hci_stack->iso_packets_to_queue = 1; 4493 #endif 4494 4495 hci_state_reset(); 4496 } 4497 4498 void hci_deinit(void){ 4499 btstack_run_loop_remove_timer(&hci_stack->timeout); 4500 #ifdef HAVE_MALLOC 4501 if (hci_stack) { 4502 free(hci_stack); 4503 } 4504 #endif 4505 hci_stack = NULL; 4506 4507 #ifdef ENABLE_CLASSIC 4508 disable_l2cap_timeouts = 0; 4509 #endif 4510 } 4511 4512 /** 4513 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4514 */ 4515 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4516 hci_stack->chipset = chipset_driver; 4517 4518 // reset chipset driver - init is also called on power_up 4519 if (hci_stack->chipset && hci_stack->chipset->init){ 4520 hci_stack->chipset->init(hci_stack->config); 4521 } 4522 } 4523 4524 /** 4525 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4526 */ 4527 void hci_set_control(const btstack_control_t *hardware_control){ 4528 // references to used control implementation 4529 hci_stack->control = hardware_control; 4530 // init with transport config 4531 hardware_control->init(hci_stack->config); 4532 } 4533 4534 static void hci_discard_connections(void){ 4535 btstack_linked_list_iterator_t it; 4536 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4537 while (btstack_linked_list_iterator_has_next(&it)){ 4538 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4539 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4540 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4541 hci_shutdown_connection(connection); 4542 } 4543 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4544 while (hci_stack->iso_streams != NULL){ 4545 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4546 } 4547 #endif 4548 } 4549 4550 void hci_close(void){ 4551 4552 #ifdef ENABLE_CLASSIC 4553 // close remote device db 4554 if (hci_stack->link_key_db) { 4555 hci_stack->link_key_db->close(); 4556 } 4557 #endif 4558 4559 hci_discard_connections(); 4560 4561 hci_power_control(HCI_POWER_OFF); 4562 4563 #ifdef HAVE_MALLOC 4564 free(hci_stack); 4565 #endif 4566 hci_stack = NULL; 4567 } 4568 4569 #ifdef HAVE_SCO_TRANSPORT 4570 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4571 hci_stack->sco_transport = sco_transport; 4572 sco_transport->register_packet_handler(&packet_handler); 4573 } 4574 #endif 4575 4576 #ifdef ENABLE_CLASSIC 4577 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4578 // validate ranage and set 4579 if (encryption_key_size < 7) return; 4580 if (encryption_key_size > 16) return; 4581 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4582 } 4583 4584 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4585 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4586 hci_stack->gap_security_mode = security_mode; 4587 return ERROR_CODE_SUCCESS; 4588 } else { 4589 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4590 } 4591 } 4592 4593 gap_security_mode_t gap_get_security_mode(void){ 4594 return hci_stack->gap_security_mode; 4595 } 4596 4597 void gap_set_security_level(gap_security_level_t security_level){ 4598 hci_stack->gap_security_level = security_level; 4599 } 4600 4601 gap_security_level_t gap_get_security_level(void){ 4602 if (hci_stack->gap_secure_connections_only_mode){ 4603 return LEVEL_4; 4604 } 4605 return hci_stack->gap_security_level; 4606 } 4607 4608 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4609 hci_stack->gap_minimal_service_security_level = security_level; 4610 } 4611 4612 void gap_set_secure_connections_only_mode(bool enable){ 4613 hci_stack->gap_secure_connections_only_mode = enable; 4614 } 4615 4616 bool gap_get_secure_connections_only_mode(void){ 4617 return hci_stack->gap_secure_connections_only_mode; 4618 } 4619 #endif 4620 4621 #ifdef ENABLE_CLASSIC 4622 void gap_set_class_of_device(uint32_t class_of_device){ 4623 hci_stack->class_of_device = class_of_device; 4624 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4625 hci_run(); 4626 } 4627 4628 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4629 hci_stack->default_link_policy_settings = default_link_policy_settings; 4630 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4631 hci_run(); 4632 } 4633 4634 void gap_set_allow_role_switch(bool allow_role_switch){ 4635 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4636 } 4637 4638 uint8_t hci_get_allow_role_switch(void){ 4639 return hci_stack->allow_role_switch; 4640 } 4641 4642 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4643 hci_stack->link_supervision_timeout = link_supervision_timeout; 4644 } 4645 4646 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4647 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4648 } 4649 4650 uint16_t hci_automatic_flush_timeout(void){ 4651 return hci_stack->automatic_flush_timeout; 4652 } 4653 4654 void hci_disable_l2cap_timeout_check(void){ 4655 disable_l2cap_timeouts = 1; 4656 } 4657 #endif 4658 4659 #ifndef HAVE_HOST_CONTROLLER_API 4660 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4661 void hci_set_bd_addr(bd_addr_t addr){ 4662 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4663 hci_stack->custom_bd_addr_set = 1; 4664 } 4665 #endif 4666 4667 // State-Module-Driver overview 4668 // state module low-level 4669 // HCI_STATE_OFF off close 4670 // HCI_STATE_INITIALIZING, on open 4671 // HCI_STATE_WORKING, on open 4672 // HCI_STATE_HALTING, on open 4673 // HCI_STATE_SLEEPING, off/sleep close 4674 // HCI_STATE_FALLING_ASLEEP on open 4675 4676 static int hci_power_control_on(void){ 4677 4678 // power on 4679 int err = 0; 4680 if (hci_stack->control && hci_stack->control->on){ 4681 err = (*hci_stack->control->on)(); 4682 } 4683 if (err){ 4684 log_error( "POWER_ON failed"); 4685 hci_emit_hci_open_failed(); 4686 return err; 4687 } 4688 4689 // int chipset driver 4690 if (hci_stack->chipset && hci_stack->chipset->init){ 4691 hci_stack->chipset->init(hci_stack->config); 4692 } 4693 4694 // init transport 4695 if (hci_stack->hci_transport->init){ 4696 hci_stack->hci_transport->init(hci_stack->config); 4697 } 4698 4699 // open transport 4700 err = hci_stack->hci_transport->open(); 4701 if (err){ 4702 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4703 if (hci_stack->control && hci_stack->control->off){ 4704 (*hci_stack->control->off)(); 4705 } 4706 hci_emit_hci_open_failed(); 4707 return err; 4708 } 4709 return 0; 4710 } 4711 4712 static void hci_power_control_off(void){ 4713 4714 log_info("hci_power_control_off"); 4715 4716 // close low-level device 4717 hci_stack->hci_transport->close(); 4718 4719 log_info("hci_power_control_off - hci_transport closed"); 4720 4721 // power off 4722 if (hci_stack->control && hci_stack->control->off){ 4723 (*hci_stack->control->off)(); 4724 } 4725 4726 log_info("hci_power_control_off - control closed"); 4727 4728 hci_stack->state = HCI_STATE_OFF; 4729 } 4730 4731 static void hci_power_control_sleep(void){ 4732 4733 log_info("hci_power_control_sleep"); 4734 4735 #if 0 4736 // don't close serial port during sleep 4737 4738 // close low-level device 4739 hci_stack->hci_transport->close(hci_stack->config); 4740 #endif 4741 4742 // sleep mode 4743 if (hci_stack->control && hci_stack->control->sleep){ 4744 (*hci_stack->control->sleep)(); 4745 } 4746 4747 hci_stack->state = HCI_STATE_SLEEPING; 4748 } 4749 4750 static int hci_power_control_wake(void){ 4751 4752 log_info("hci_power_control_wake"); 4753 4754 // wake on 4755 if (hci_stack->control && hci_stack->control->wake){ 4756 (*hci_stack->control->wake)(); 4757 } 4758 4759 #if 0 4760 // open low-level device 4761 int err = hci_stack->hci_transport->open(hci_stack->config); 4762 if (err){ 4763 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4764 if (hci_stack->control && hci_stack->control->off){ 4765 (*hci_stack->control->off)(); 4766 } 4767 hci_emit_hci_open_failed(); 4768 return err; 4769 } 4770 #endif 4771 4772 return 0; 4773 } 4774 4775 static void hci_power_enter_initializing_state(void){ 4776 // set up state machine 4777 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4778 hci_stack->hci_packet_buffer_reserved = false; 4779 hci_stack->state = HCI_STATE_INITIALIZING; 4780 hci_stack->substate = HCI_INIT_SEND_RESET; 4781 } 4782 4783 static void hci_power_enter_halting_state(void){ 4784 #ifdef ENABLE_BLE 4785 hci_whitelist_free(); 4786 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4787 hci_periodic_advertiser_list_free(); 4788 #endif 4789 #endif 4790 // see hci_run 4791 hci_stack->state = HCI_STATE_HALTING; 4792 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4793 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4794 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4795 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4796 btstack_run_loop_add_timer(&hci_stack->timeout); 4797 } 4798 4799 // returns error 4800 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4801 int err; 4802 switch (power_mode){ 4803 case HCI_POWER_ON: 4804 err = hci_power_control_on(); 4805 if (err != 0) { 4806 log_error("hci_power_control_on() error %d", err); 4807 return err; 4808 } 4809 hci_power_enter_initializing_state(); 4810 break; 4811 case HCI_POWER_OFF: 4812 // do nothing 4813 break; 4814 case HCI_POWER_SLEEP: 4815 // do nothing (with SLEEP == OFF) 4816 break; 4817 default: 4818 btstack_assert(false); 4819 break; 4820 } 4821 return ERROR_CODE_SUCCESS; 4822 } 4823 4824 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4825 switch (power_mode){ 4826 case HCI_POWER_ON: 4827 // do nothing 4828 break; 4829 case HCI_POWER_OFF: 4830 // no connections yet, just turn it off 4831 hci_power_control_off(); 4832 break; 4833 case HCI_POWER_SLEEP: 4834 // no connections yet, just turn it off 4835 hci_power_control_sleep(); 4836 break; 4837 default: 4838 btstack_assert(false); 4839 break; 4840 } 4841 return ERROR_CODE_SUCCESS; 4842 } 4843 4844 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4845 switch (power_mode){ 4846 case HCI_POWER_ON: 4847 // do nothing 4848 break; 4849 case HCI_POWER_OFF: 4850 hci_power_enter_halting_state(); 4851 break; 4852 case HCI_POWER_SLEEP: 4853 // see hci_run 4854 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4855 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4856 break; 4857 default: 4858 btstack_assert(false); 4859 break; 4860 } 4861 return ERROR_CODE_SUCCESS; 4862 } 4863 4864 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4865 switch (power_mode){ 4866 case HCI_POWER_ON: 4867 hci_power_enter_initializing_state(); 4868 break; 4869 case HCI_POWER_OFF: 4870 // do nothing 4871 break; 4872 case HCI_POWER_SLEEP: 4873 // see hci_run 4874 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4875 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4876 break; 4877 default: 4878 btstack_assert(false); 4879 break; 4880 } 4881 return ERROR_CODE_SUCCESS; 4882 } 4883 4884 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4885 switch (power_mode){ 4886 case HCI_POWER_ON: 4887 hci_power_enter_initializing_state(); 4888 break; 4889 case HCI_POWER_OFF: 4890 hci_power_enter_halting_state(); 4891 break; 4892 case HCI_POWER_SLEEP: 4893 // do nothing 4894 break; 4895 default: 4896 btstack_assert(false); 4897 break; 4898 } 4899 return ERROR_CODE_SUCCESS; 4900 } 4901 4902 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4903 int err; 4904 switch (power_mode){ 4905 case HCI_POWER_ON: 4906 err = hci_power_control_wake(); 4907 if (err) return err; 4908 hci_power_enter_initializing_state(); 4909 break; 4910 case HCI_POWER_OFF: 4911 hci_power_enter_halting_state(); 4912 break; 4913 case HCI_POWER_SLEEP: 4914 // do nothing 4915 break; 4916 default: 4917 btstack_assert(false); 4918 break; 4919 } 4920 return ERROR_CODE_SUCCESS; 4921 } 4922 4923 int hci_power_control(HCI_POWER_MODE power_mode){ 4924 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4925 int err = 0; 4926 switch (hci_stack->state){ 4927 case HCI_STATE_OFF: 4928 err = hci_power_control_state_off(power_mode); 4929 break; 4930 case HCI_STATE_INITIALIZING: 4931 err = hci_power_control_state_initializing(power_mode); 4932 break; 4933 case HCI_STATE_WORKING: 4934 err = hci_power_control_state_working(power_mode); 4935 break; 4936 case HCI_STATE_HALTING: 4937 err = hci_power_control_state_halting(power_mode); 4938 break; 4939 case HCI_STATE_FALLING_ASLEEP: 4940 err = hci_power_control_state_falling_asleep(power_mode); 4941 break; 4942 case HCI_STATE_SLEEPING: 4943 err = hci_power_control_state_sleeping(power_mode); 4944 break; 4945 default: 4946 btstack_assert(false); 4947 break; 4948 } 4949 if (err != 0){ 4950 return err; 4951 } 4952 4953 // create internal event 4954 hci_emit_state(); 4955 4956 // trigger next/first action 4957 hci_run(); 4958 4959 return 0; 4960 } 4961 4962 4963 static void hci_halting_run(void) { 4964 4965 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4966 4967 hci_connection_t *connection; 4968 #ifdef ENABLE_BLE 4969 #ifdef ENABLE_LE_PERIPHERAL 4970 bool stop_advertismenets; 4971 #endif 4972 #endif 4973 4974 switch (hci_stack->substate) { 4975 case HCI_HALTING_CLASSIC_STOP: 4976 #ifdef ENABLE_CLASSIC 4977 if (!hci_can_send_command_packet_now()) return; 4978 4979 if (hci_stack->connectable || hci_stack->discoverable){ 4980 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4981 hci_send_cmd(&hci_write_scan_enable, 0); 4982 return; 4983 } 4984 #endif 4985 /* fall through */ 4986 4987 case HCI_HALTING_LE_ADV_STOP: 4988 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4989 4990 #ifdef ENABLE_BLE 4991 #ifdef ENABLE_LE_PERIPHERAL 4992 if (!hci_can_send_command_packet_now()) return; 4993 4994 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4995 4996 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4997 if (hci_extended_advertising_supported()){ 4998 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4999 btstack_linked_list_iterator_t it; 5000 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5001 // stop all periodic advertisements and check if an extended set is active 5002 while (btstack_linked_list_iterator_has_next(&it)){ 5003 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5004 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5005 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5006 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5007 return; 5008 } 5009 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5010 stop_advertismenets = true; 5011 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5012 } 5013 } 5014 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5015 if (stop_advertismenets){ 5016 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5017 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5018 return; 5019 } 5020 } 5021 else 5022 #else /* ENABLE_LE_PERIPHERAL */ 5023 { 5024 if (stop_advertismenets) { 5025 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5026 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5027 return; 5028 } 5029 } 5030 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5031 #endif /* ENABLE_LE_PERIPHERAL */ 5032 #endif /* ENABLE_BLE */ 5033 5034 /* fall through */ 5035 5036 case HCI_HALTING_LE_SCAN_STOP: 5037 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5038 if (!hci_can_send_command_packet_now()) return; 5039 5040 #ifdef ENABLE_BLE 5041 #ifdef ENABLE_LE_CENTRAL 5042 if (hci_stack->le_scanning_active){ 5043 hci_le_scan_stop(); 5044 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5045 return; 5046 } 5047 #endif 5048 #endif 5049 5050 /* fall through */ 5051 5052 case HCI_HALTING_DISCONNECT_ALL: 5053 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5054 if (!hci_can_send_command_packet_now()) return; 5055 5056 // close all open connections 5057 connection = (hci_connection_t *) hci_stack->connections; 5058 if (connection) { 5059 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5060 5061 // check state 5062 if (connection->state == SENT_DISCONNECT) return; 5063 connection->state = SENT_DISCONNECT; 5064 5065 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 5066 5067 // finally, send the disconnect command 5068 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5069 return; 5070 } 5071 5072 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5073 // stop BIGs and BIG Syncs 5074 if (hci_stack->le_audio_bigs != NULL){ 5075 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5076 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5077 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5078 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5079 return; 5080 } 5081 if (hci_stack->le_audio_big_syncs != NULL){ 5082 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5083 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5084 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5085 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5086 return; 5087 } 5088 #endif 5089 5090 btstack_run_loop_remove_timer(&hci_stack->timeout); 5091 5092 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5093 log_info("HCI_STATE_HALTING: wait 50 ms"); 5094 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5095 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5096 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5097 btstack_run_loop_add_timer(&hci_stack->timeout); 5098 break; 5099 5100 case HCI_HALTING_CLOSE: 5101 // close left over connections (that had not been properly closed before) 5102 hci_discard_connections(); 5103 5104 log_info("HCI_STATE_HALTING, calling off"); 5105 5106 // switch mode 5107 hci_power_control_off(); 5108 5109 log_info("HCI_STATE_HALTING, emitting state"); 5110 hci_emit_state(); 5111 log_info("HCI_STATE_HALTING, done"); 5112 break; 5113 5114 case HCI_HALTING_W4_CLOSE_TIMER: 5115 // keep waiting 5116 5117 break; 5118 default: 5119 break; 5120 } 5121 }; 5122 5123 static void hci_falling_asleep_run(void){ 5124 hci_connection_t * connection; 5125 switch(hci_stack->substate) { 5126 case HCI_FALLING_ASLEEP_DISCONNECT: 5127 log_info("HCI_STATE_FALLING_ASLEEP"); 5128 // close all open connections 5129 connection = (hci_connection_t *) hci_stack->connections; 5130 if (connection){ 5131 5132 // send disconnect 5133 if (!hci_can_send_command_packet_now()) return; 5134 5135 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5136 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5137 5138 // send disconnected event right away - causes higher layer connections to get closed, too. 5139 hci_shutdown_connection(connection); 5140 return; 5141 } 5142 5143 if (hci_classic_supported()){ 5144 // disable page and inquiry scan 5145 if (!hci_can_send_command_packet_now()) return; 5146 5147 log_info("HCI_STATE_HALTING, disabling inq scans"); 5148 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5149 5150 // continue in next sub state 5151 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5152 break; 5153 } 5154 5155 /* fall through */ 5156 5157 case HCI_FALLING_ASLEEP_COMPLETE: 5158 log_info("HCI_STATE_HALTING, calling sleep"); 5159 // switch mode 5160 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5161 hci_emit_state(); 5162 break; 5163 5164 default: 5165 break; 5166 } 5167 } 5168 5169 #ifdef ENABLE_CLASSIC 5170 5171 static void hci_update_scan_enable(void){ 5172 // 2 = page scan, 1 = inq scan 5173 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5174 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5175 hci_run(); 5176 } 5177 5178 void gap_discoverable_control(uint8_t enable){ 5179 if (enable) enable = 1; // normalize argument 5180 5181 if (hci_stack->discoverable == enable){ 5182 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5183 return; 5184 } 5185 5186 hci_stack->discoverable = enable; 5187 hci_update_scan_enable(); 5188 } 5189 5190 void gap_connectable_control(uint8_t enable){ 5191 if (enable) enable = 1; // normalize argument 5192 5193 // don't emit event 5194 if (hci_stack->connectable == enable) return; 5195 5196 hci_stack->connectable = enable; 5197 hci_update_scan_enable(); 5198 } 5199 #endif 5200 5201 void gap_local_bd_addr(bd_addr_t address_buffer){ 5202 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5203 } 5204 5205 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5206 static void hci_host_num_completed_packets(void){ 5207 5208 // create packet manually as arrays are not supported and num_commands should not get reduced 5209 hci_reserve_packet_buffer(); 5210 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5211 5212 uint16_t size = 0; 5213 uint16_t num_handles = 0; 5214 packet[size++] = 0x35; 5215 packet[size++] = 0x0c; 5216 size++; // skip param len 5217 size++; // skip num handles 5218 5219 // add { handle, packets } entries 5220 btstack_linked_item_t * it; 5221 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5222 hci_connection_t * connection = (hci_connection_t *) it; 5223 if (connection->num_packets_completed){ 5224 little_endian_store_16(packet, size, connection->con_handle); 5225 size += 2; 5226 little_endian_store_16(packet, size, connection->num_packets_completed); 5227 size += 2; 5228 // 5229 num_handles++; 5230 connection->num_packets_completed = 0; 5231 } 5232 } 5233 5234 packet[2] = size - 3; 5235 packet[3] = num_handles; 5236 5237 hci_stack->host_completed_packets = 0; 5238 5239 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5240 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5241 5242 // release packet buffer for synchronous transport implementations 5243 if (hci_transport_synchronous()){ 5244 hci_release_packet_buffer(); 5245 hci_emit_transport_packet_sent(); 5246 } 5247 } 5248 #endif 5249 5250 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5251 UNUSED(ds); 5252 hci_stack->substate = HCI_HALTING_CLOSE; 5253 // allow packet handlers to defer final shutdown 5254 hci_emit_state(); 5255 hci_run(); 5256 } 5257 5258 static bool hci_run_acl_fragments(void){ 5259 if (hci_stack->acl_fragmentation_total_size > 0u) { 5260 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5261 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5262 if (connection) { 5263 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5264 hci_send_acl_packet_fragments(connection); 5265 return true; 5266 } 5267 } else { 5268 // connection gone -> discard further fragments 5269 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5270 hci_stack->acl_fragmentation_total_size = 0; 5271 hci_stack->acl_fragmentation_pos = 0; 5272 } 5273 } 5274 return false; 5275 } 5276 5277 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5278 static bool hci_run_iso_fragments(void){ 5279 if (hci_stack->iso_fragmentation_total_size > 0u) { 5280 // TODO: flow control 5281 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5282 hci_send_iso_packet_fragments(); 5283 return true; 5284 } 5285 } 5286 return false; 5287 } 5288 #endif 5289 5290 #ifdef ENABLE_CLASSIC 5291 5292 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5293 static bool hci_classic_operation_active(void) { 5294 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5295 return true; 5296 } 5297 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5298 return true; 5299 } 5300 btstack_linked_item_t * it; 5301 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5302 hci_connection_t *connection = (hci_connection_t *) it; 5303 switch (connection->state) { 5304 case SENT_CREATE_CONNECTION: 5305 case SENT_CANCEL_CONNECTION: 5306 case SENT_DISCONNECT: 5307 return true; 5308 default: 5309 break; 5310 } 5311 } 5312 return false; 5313 } 5314 #endif 5315 5316 static bool hci_run_general_gap_classic(void){ 5317 5318 // assert stack is working and classic is active 5319 if (hci_classic_supported() == false) return false; 5320 if (hci_stack->state != HCI_STATE_WORKING) return false; 5321 5322 // decline incoming connections 5323 if (hci_stack->decline_reason){ 5324 uint8_t reason = hci_stack->decline_reason; 5325 hci_stack->decline_reason = 0; 5326 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5327 return true; 5328 } 5329 5330 if (hci_stack->gap_tasks_classic != 0){ 5331 hci_run_gap_tasks_classic(); 5332 return true; 5333 } 5334 5335 // start/stop inquiry 5336 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5337 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5338 if (hci_classic_operation_active() == false) 5339 #endif 5340 { 5341 uint8_t duration = hci_stack->inquiry_state; 5342 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5343 if (hci_stack->inquiry_max_period_length != 0){ 5344 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); 5345 } else { 5346 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5347 } 5348 return true; 5349 } 5350 } 5351 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5352 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5353 hci_send_cmd(&hci_inquiry_cancel); 5354 return true; 5355 } 5356 5357 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5358 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5359 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5360 return true; 5361 } 5362 5363 // remote name request 5364 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5365 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5366 if (hci_classic_operation_active() == false) 5367 #endif 5368 { 5369 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5370 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5371 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5372 return true; 5373 } 5374 } 5375 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5376 // Local OOB data 5377 if (hci_stack->classic_read_local_oob_data){ 5378 hci_stack->classic_read_local_oob_data = false; 5379 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5380 hci_send_cmd(&hci_read_local_extended_oob_data); 5381 } else { 5382 hci_send_cmd(&hci_read_local_oob_data); 5383 } 5384 } 5385 #endif 5386 // pairing 5387 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5388 uint8_t state = hci_stack->gap_pairing_state; 5389 uint8_t pin_code[16]; 5390 switch (state){ 5391 case GAP_PAIRING_STATE_SEND_PIN: 5392 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5393 memset(pin_code, 0, 16); 5394 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5395 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5396 break; 5397 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5398 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5399 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5400 break; 5401 case GAP_PAIRING_STATE_SEND_PASSKEY: 5402 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5403 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5404 break; 5405 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5406 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5407 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5408 break; 5409 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5410 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5411 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5412 break; 5413 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5414 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5415 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5416 break; 5417 default: 5418 break; 5419 } 5420 return true; 5421 } 5422 return false; 5423 } 5424 #endif 5425 5426 #ifdef ENABLE_BLE 5427 5428 #ifdef ENABLE_LE_CENTRAL 5429 static void hci_le_scan_stop(void){ 5430 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5431 if (hci_extended_advertising_supported()) { 5432 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5433 } else 5434 #endif 5435 { 5436 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5437 } 5438 } 5439 #endif 5440 5441 #ifdef ENABLE_LE_PERIPHERAL 5442 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5443 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5444 uint8_t operation = 0; 5445 if (pos == 0){ 5446 // first fragment or complete data 5447 operation |= 1; 5448 } 5449 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5450 // last fragment or complete data 5451 operation |= 2; 5452 } 5453 return operation; 5454 } 5455 #endif 5456 #endif 5457 5458 static bool hci_run_general_gap_le(void){ 5459 5460 btstack_linked_list_iterator_t lit; 5461 5462 // Phase 1: collect what to stop 5463 5464 #ifdef ENABLE_LE_CENTRAL 5465 bool scanning_stop = false; 5466 bool connecting_stop = false; 5467 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5468 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5469 bool periodic_sync_stop = false; 5470 #endif 5471 #endif 5472 #endif 5473 5474 #ifdef ENABLE_LE_PERIPHERAL 5475 bool advertising_stop = false; 5476 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5477 le_advertising_set_t * advertising_stop_set = NULL; 5478 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5479 bool periodic_advertising_stop = false; 5480 #endif 5481 #endif 5482 #endif 5483 5484 // check if own address changes 5485 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5486 5487 // check if whitelist needs modification 5488 bool whitelist_modification_pending = false; 5489 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5490 while (btstack_linked_list_iterator_has_next(&lit)){ 5491 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5492 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5493 whitelist_modification_pending = true; 5494 break; 5495 } 5496 } 5497 5498 // check if resolving list needs modification 5499 bool resolving_list_modification_pending = false; 5500 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5501 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5502 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5503 resolving_list_modification_pending = true; 5504 } 5505 #endif 5506 5507 #ifdef ENABLE_LE_CENTRAL 5508 5509 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5510 // check if periodic advertiser list needs modification 5511 bool periodic_list_modification_pending = false; 5512 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5513 while (btstack_linked_list_iterator_has_next(&lit)){ 5514 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5515 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5516 periodic_list_modification_pending = true; 5517 break; 5518 } 5519 } 5520 #endif 5521 5522 // scanning control 5523 if (hci_stack->le_scanning_active) { 5524 // stop if: 5525 // - parameter change required 5526 // - it's disabled 5527 // - whitelist change required but used for scanning 5528 // - resolving list modified 5529 // - own address changes 5530 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5531 if ((hci_stack->le_scanning_param_update) || 5532 !hci_stack->le_scanning_enabled || 5533 (scanning_uses_whitelist && whitelist_modification_pending) || 5534 resolving_list_modification_pending || 5535 random_address_change){ 5536 5537 scanning_stop = true; 5538 } 5539 } 5540 5541 // connecting control 5542 bool connecting_with_whitelist; 5543 switch (hci_stack->le_connecting_state){ 5544 case LE_CONNECTING_DIRECT: 5545 case LE_CONNECTING_WHITELIST: 5546 // stop connecting if: 5547 // - connecting uses white and whitelist modification pending 5548 // - if it got disabled 5549 // - resolving list modified 5550 // - own address changes 5551 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5552 if ((connecting_with_whitelist && whitelist_modification_pending) || 5553 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5554 resolving_list_modification_pending || 5555 random_address_change) { 5556 5557 connecting_stop = true; 5558 } 5559 break; 5560 default: 5561 break; 5562 } 5563 5564 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5565 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5566 // periodic sync control 5567 bool sync_with_advertiser_list; 5568 switch(hci_stack->le_periodic_sync_state){ 5569 case LE_CONNECTING_DIRECT: 5570 case LE_CONNECTING_WHITELIST: 5571 // stop sync if: 5572 // - sync with advertiser list and advertiser list modification pending 5573 // - if it got disabled 5574 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5575 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5576 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5577 periodic_sync_stop = true; 5578 } 5579 break; 5580 default: 5581 break; 5582 } 5583 #endif 5584 #endif 5585 5586 #endif /* ENABLE_LE_CENTRAL */ 5587 5588 #ifdef ENABLE_LE_PERIPHERAL 5589 // le advertisement control 5590 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5591 // stop if: 5592 // - parameter change required 5593 // - random address used in advertising and changes 5594 // - it's disabled 5595 // - whitelist change required but used for advertisement filter policy 5596 // - resolving list modified 5597 // - own address changes 5598 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5599 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5600 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5601 if (advertising_change || 5602 (advertising_uses_random_address && random_address_change) || 5603 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5604 (advertising_uses_whitelist && whitelist_modification_pending) || 5605 resolving_list_modification_pending || 5606 random_address_change) { 5607 5608 advertising_stop = true; 5609 } 5610 } 5611 5612 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5613 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5614 btstack_linked_list_iterator_t it; 5615 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5616 while (btstack_linked_list_iterator_has_next(&it)){ 5617 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5618 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5619 // stop if: 5620 // - parameter change required 5621 // - random address used in connectable advertising and changes 5622 // - it's disabled 5623 // - whitelist change required but used for advertisement filter policy 5624 // - resolving list modified 5625 // - own address changes 5626 // - advertisement set will be removed 5627 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5628 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5629 bool advertising_uses_random_address = 5630 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5631 advertising_connectable; 5632 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5633 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5634 bool advertising_set_random_address_change = 5635 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5636 bool advertising_set_will_be_removed = 5637 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5638 if (advertising_parameter_change || 5639 (advertising_uses_random_address && advertising_set_random_address_change) || 5640 (advertising_enabled == false) || 5641 (advertising_uses_whitelist && whitelist_modification_pending) || 5642 resolving_list_modification_pending || 5643 advertising_set_will_be_removed) { 5644 5645 advertising_stop = true; 5646 advertising_stop_set = advertising_set; 5647 break; 5648 } 5649 } 5650 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5651 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5652 // stop if: 5653 // - it's disabled 5654 // - parameter change required 5655 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5656 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5657 if ((periodic_enabled == false) || periodic_parameter_change){ 5658 periodic_advertising_stop = true; 5659 advertising_stop_set = advertising_set; 5660 } 5661 } 5662 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5663 } 5664 } 5665 #endif 5666 5667 #endif 5668 5669 5670 // Phase 2: stop everything that should be off during modifications 5671 5672 5673 // 2.1 Outgoing connection 5674 #ifdef ENABLE_LE_CENTRAL 5675 if (connecting_stop){ 5676 hci_send_cmd(&hci_le_create_connection_cancel); 5677 return true; 5678 } 5679 #endif 5680 5681 // 2.2 Scanning 5682 #ifdef ENABLE_LE_CENTRAL 5683 if (scanning_stop){ 5684 hci_stack->le_scanning_active = false; 5685 hci_le_scan_stop(); 5686 return true; 5687 } 5688 5689 // 2.3 Periodic Sync 5690 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5691 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5692 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5693 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5694 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5695 return true; 5696 } 5697 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5698 if (periodic_sync_stop){ 5699 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5700 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5701 return true; 5702 } 5703 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5704 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5705 #endif /* ENABLE_LE_CENTRAL */ 5706 5707 // 2.4 Advertising: legacy, extended, periodic 5708 #ifdef ENABLE_LE_PERIPHERAL 5709 if (advertising_stop){ 5710 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5711 if (hci_extended_advertising_supported()) { 5712 uint8_t advertising_stop_handle; 5713 if (advertising_stop_set != NULL){ 5714 advertising_stop_handle = advertising_stop_set->advertising_handle; 5715 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5716 } else { 5717 advertising_stop_handle = 0; 5718 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5719 } 5720 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5721 const uint16_t durations[] = { 0 }; 5722 const uint16_t max_events[] = { 0 }; 5723 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5724 } else 5725 #endif 5726 { 5727 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5728 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5729 } 5730 return true; 5731 } 5732 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5733 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5734 if (periodic_advertising_stop){ 5735 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5736 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5737 return true; 5738 } 5739 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5740 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5741 #endif /* ENABLE_LE_PERIPHERAL */ 5742 5743 5744 // Phase 3: modify 5745 5746 if (random_address_change){ 5747 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5748 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5749 if (hci_extended_advertising_supported()) { 5750 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5751 } 5752 #endif 5753 { 5754 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5755 } 5756 return true; 5757 } 5758 5759 #ifdef ENABLE_LE_CENTRAL 5760 if (hci_stack->le_scanning_param_update){ 5761 hci_stack->le_scanning_param_update = false; 5762 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5763 if (hci_extended_advertising_supported()){ 5764 // prepare arrays for all PHYs 5765 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5766 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5767 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5768 uint8_t scanning_phys = 1; // LE 1M PHY 5769 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5770 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5771 } else 5772 #endif 5773 { 5774 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5775 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5776 } 5777 return true; 5778 } 5779 #endif 5780 5781 #ifdef ENABLE_LE_PERIPHERAL 5782 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5783 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5784 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5785 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5786 if (hci_extended_advertising_supported()){ 5787 // map advertisment type to advertising event properties 5788 uint16_t adv_event_properties = 0; 5789 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5790 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5791 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5792 } 5793 hci_stack->le_advertising_set_in_current_command = 0; 5794 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5795 0, 5796 adv_event_properties, 5797 hci_stack->le_advertisements_interval_min, 5798 hci_stack->le_advertisements_interval_max, 5799 hci_stack->le_advertisements_channel_map, 5800 hci_stack->le_advertisements_own_addr_type, 5801 hci_stack->le_advertisements_direct_address_type, 5802 hci_stack->le_advertisements_direct_address, 5803 hci_stack->le_advertisements_filter_policy, 5804 0x7f, // tx power: no preference 5805 0x01, // primary adv phy: LE 1M 5806 0, // secondary adv max skip 5807 0, // secondary adv phy 5808 0, // adv sid 5809 0 // scan request notification 5810 ); 5811 } 5812 #endif 5813 { 5814 hci_send_cmd(&hci_le_set_advertising_parameters, 5815 hci_stack->le_advertisements_interval_min, 5816 hci_stack->le_advertisements_interval_max, 5817 hci_stack->le_advertisements_type, 5818 hci_stack->le_advertisements_own_addr_type, 5819 hci_stack->le_advertisements_direct_address_type, 5820 hci_stack->le_advertisements_direct_address, 5821 hci_stack->le_advertisements_channel_map, 5822 hci_stack->le_advertisements_filter_policy); 5823 } 5824 return true; 5825 } 5826 5827 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5828 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5829 uint8_t adv_data_clean[31]; 5830 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5831 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5832 hci_stack->le_advertisements_data_len); 5833 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5834 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5835 if (hci_extended_advertising_supported()){ 5836 hci_stack->le_advertising_set_in_current_command = 0; 5837 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5838 } else 5839 #endif 5840 { 5841 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5842 } 5843 return true; 5844 } 5845 5846 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5847 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5848 uint8_t scan_data_clean[31]; 5849 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5850 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5851 hci_stack->le_scan_response_data_len); 5852 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5853 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5854 if (hci_extended_advertising_supported()){ 5855 hci_stack->le_advertising_set_in_current_command = 0; 5856 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5857 } else 5858 #endif 5859 { 5860 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5861 } 5862 return true; 5863 } 5864 5865 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5866 if (hci_extended_advertising_supported()) { 5867 btstack_linked_list_iterator_t it; 5868 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5869 while (btstack_linked_list_iterator_has_next(&it)){ 5870 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5871 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5872 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5873 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5874 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5875 return true; 5876 } 5877 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5878 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5879 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5880 return true; 5881 } 5882 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5883 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5884 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5885 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5886 advertising_set->advertising_handle, 5887 advertising_set->extended_params.advertising_event_properties, 5888 advertising_set->extended_params.primary_advertising_interval_min, 5889 advertising_set->extended_params.primary_advertising_interval_max, 5890 advertising_set->extended_params.primary_advertising_channel_map, 5891 advertising_set->extended_params.own_address_type, 5892 advertising_set->extended_params.peer_address_type, 5893 advertising_set->extended_params.peer_address, 5894 advertising_set->extended_params.advertising_filter_policy, 5895 advertising_set->extended_params.advertising_tx_power, 5896 advertising_set->extended_params.primary_advertising_phy, 5897 advertising_set->extended_params.secondary_advertising_max_skip, 5898 advertising_set->extended_params.secondary_advertising_phy, 5899 advertising_set->extended_params.advertising_sid, 5900 advertising_set->extended_params.scan_request_notification_enable 5901 ); 5902 return true; 5903 } 5904 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5905 uint16_t pos = advertising_set->adv_data_pos; 5906 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5907 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5908 if ((operation & 0x02) != 0){ 5909 // last fragment or complete data 5910 operation |= 2; 5911 advertising_set->adv_data_pos = 0; 5912 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5913 } else { 5914 advertising_set->adv_data_pos += data_to_upload; 5915 } 5916 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5917 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5918 return true; 5919 } 5920 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5921 uint16_t pos = advertising_set->scan_data_pos; 5922 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5923 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5924 if ((operation & 0x02) != 0){ 5925 advertising_set->scan_data_pos = 0; 5926 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5927 } else { 5928 advertising_set->scan_data_pos += data_to_upload; 5929 } 5930 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5931 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5932 return true; 5933 } 5934 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5935 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5936 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5937 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5938 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5939 advertising_set->advertising_handle, 5940 advertising_set->periodic_params.periodic_advertising_interval_min, 5941 advertising_set->periodic_params.periodic_advertising_interval_max, 5942 advertising_set->periodic_params.periodic_advertising_properties); 5943 return true; 5944 } 5945 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5946 uint16_t pos = advertising_set->periodic_data_pos; 5947 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5948 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5949 if ((operation & 0x02) != 0){ 5950 // last fragment or complete data 5951 operation |= 2; 5952 advertising_set->periodic_data_pos = 0; 5953 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5954 } else { 5955 advertising_set->periodic_data_pos += data_to_upload; 5956 } 5957 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5958 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5959 return true; 5960 } 5961 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5962 } 5963 } 5964 #endif 5965 5966 #endif 5967 5968 #ifdef ENABLE_LE_CENTRAL 5969 // if connect with whitelist was active and is not cancelled yet, wait until next time 5970 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5971 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5972 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5973 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5974 #endif 5975 #endif 5976 5977 // LE Whitelist Management 5978 if (whitelist_modification_pending){ 5979 // add/remove entries 5980 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5981 while (btstack_linked_list_iterator_has_next(&lit)){ 5982 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5983 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5984 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5985 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5986 return true; 5987 } 5988 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5989 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5990 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5991 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5992 return true; 5993 } 5994 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5995 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5996 btstack_memory_whitelist_entry_free(entry); 5997 } 5998 } 5999 } 6000 6001 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6002 // LE Resolving List Management 6003 if (resolving_list_supported) { 6004 uint16_t i; 6005 switch (hci_stack->le_resolving_list_state) { 6006 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6007 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6008 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6009 return true; 6010 case LE_RESOLVING_LIST_READ_SIZE: 6011 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6012 hci_send_cmd(&hci_le_read_resolving_list_size); 6013 return true; 6014 case LE_RESOLVING_LIST_SEND_CLEAR: 6015 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 6016 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6017 sizeof(hci_stack->le_resolving_list_add_entries)); 6018 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6019 sizeof(hci_stack->le_resolving_list_remove_entries)); 6020 hci_send_cmd(&hci_le_clear_resolving_list); 6021 return true; 6022 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 6023 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6024 uint8_t offset = i >> 3; 6025 uint8_t mask = 1 << (i & 7); 6026 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6027 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6028 bd_addr_t peer_identity_addreses; 6029 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6030 sm_key_t peer_irk; 6031 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6032 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6033 6034 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6035 // trigger whitelist entry 'update' (work around for controller bug) 6036 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6037 while (btstack_linked_list_iterator_has_next(&lit)) { 6038 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6039 if (entry->address_type != peer_identity_addr_type) continue; 6040 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6041 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6042 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6043 } 6044 #endif 6045 6046 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6047 peer_identity_addreses); 6048 return true; 6049 } 6050 6051 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 6052 6053 /* fall through */ 6054 6055 case LE_RESOLVING_LIST_ADD_ENTRIES: 6056 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6057 uint8_t offset = i >> 3; 6058 uint8_t mask = 1 << (i & 7); 6059 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6060 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6061 bd_addr_t peer_identity_addreses; 6062 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6063 sm_key_t peer_irk; 6064 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6065 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6066 if (btstack_is_null(peer_irk, 16)) continue; 6067 const uint8_t *local_irk = gap_get_persistent_irk(); 6068 // command uses format specifier 'P' that stores 16-byte value without flip 6069 uint8_t local_irk_flipped[16]; 6070 uint8_t peer_irk_flipped[16]; 6071 reverse_128(local_irk, local_irk_flipped); 6072 reverse_128(peer_irk, peer_irk_flipped); 6073 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6074 peer_irk_flipped, local_irk_flipped); 6075 return true; 6076 } 6077 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6078 break; 6079 6080 default: 6081 break; 6082 } 6083 } 6084 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6085 #endif 6086 6087 #ifdef ENABLE_LE_CENTRAL 6088 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6089 // LE Whitelist Management 6090 if (periodic_list_modification_pending){ 6091 // add/remove entries 6092 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6093 while (btstack_linked_list_iterator_has_next(&lit)){ 6094 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6095 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6096 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6097 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6098 return true; 6099 } 6100 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6101 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6102 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6103 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6104 return true; 6105 } 6106 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6107 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6108 btstack_memory_periodic_advertiser_list_entry_free(entry); 6109 } 6110 } 6111 } 6112 #endif 6113 #endif 6114 6115 // post-pone all actions until stack is fully working 6116 if (hci_stack->state != HCI_STATE_WORKING) return false; 6117 6118 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6119 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6120 6121 // Phase 4: restore state 6122 6123 #ifdef ENABLE_LE_CENTRAL 6124 // re-start scanning 6125 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6126 hci_stack->le_scanning_active = true; 6127 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6128 if (hci_extended_advertising_supported()){ 6129 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 6130 } else 6131 #endif 6132 { 6133 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 6134 } 6135 return true; 6136 } 6137 #endif 6138 6139 #ifdef ENABLE_LE_CENTRAL 6140 // re-start connecting 6141 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6142 bd_addr_t null_addr; 6143 memset(null_addr, 0, 6); 6144 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6145 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6146 hci_send_cmd(&hci_le_create_connection, 6147 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 6148 hci_stack->le_connection_scan_window, // scan interval: 30 ms 6149 1, // use whitelist 6150 0, // peer address type 6151 null_addr, // peer bd addr 6152 hci_stack->le_connection_own_addr_type, // our addr type: 6153 hci_stack->le_connection_interval_min, // conn interval min 6154 hci_stack->le_connection_interval_max, // conn interval max 6155 hci_stack->le_connection_latency, // conn latency 6156 hci_stack->le_supervision_timeout, // conn latency 6157 hci_stack->le_minimum_ce_length, // min ce length 6158 hci_stack->le_maximum_ce_length // max ce length 6159 ); 6160 return true; 6161 } 6162 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6163 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6164 switch(hci_stack->le_periodic_sync_request){ 6165 case LE_CONNECTING_DIRECT: 6166 case LE_CONNECTING_WHITELIST: 6167 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6168 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6169 hci_stack->le_periodic_sync_options, 6170 hci_stack->le_periodic_sync_advertising_sid, 6171 hci_stack->le_periodic_sync_advertiser_address_type, 6172 hci_stack->le_periodic_sync_advertiser_address, 6173 hci_stack->le_periodic_sync_skip, 6174 hci_stack->le_periodic_sync_timeout, 6175 hci_stack->le_periodic_sync_cte_type); 6176 return true; 6177 default: 6178 break; 6179 } 6180 } 6181 #endif 6182 #endif 6183 6184 #ifdef ENABLE_LE_PERIPHERAL 6185 // re-start advertising 6186 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6187 // check if advertisements should be enabled given 6188 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6189 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6190 6191 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6192 if (hci_extended_advertising_supported()){ 6193 const uint8_t advertising_handles[] = { 0 }; 6194 const uint16_t durations[] = { 0 }; 6195 const uint16_t max_events[] = { 0 }; 6196 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6197 } else 6198 #endif 6199 { 6200 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6201 } 6202 return true; 6203 } 6204 6205 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6206 if (hci_extended_advertising_supported()) { 6207 btstack_linked_list_iterator_t it; 6208 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6209 while (btstack_linked_list_iterator_has_next(&it)) { 6210 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6211 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6212 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6213 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6214 const uint16_t durations[] = { advertising_set->enable_timeout }; 6215 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6216 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6217 return true; 6218 } 6219 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6220 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6221 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6222 uint8_t enable = 1; 6223 if (advertising_set->periodic_include_adi){ 6224 enable |= 2; 6225 } 6226 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6227 return true; 6228 } 6229 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6230 } 6231 } 6232 #endif 6233 #endif 6234 6235 return false; 6236 } 6237 6238 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6239 static bool hci_run_iso_tasks(void){ 6240 btstack_linked_list_iterator_t it; 6241 6242 if (hci_stack->iso_active_operation_group_id != 0xff) { 6243 return false; 6244 } 6245 6246 // BIG 6247 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6248 while (btstack_linked_list_iterator_has_next(&it)){ 6249 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6250 switch (big->state){ 6251 case LE_AUDIO_BIG_STATE_CREATE: 6252 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6253 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6254 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6255 hci_send_cmd(&hci_le_create_big, 6256 big->params->big_handle, 6257 big->params->advertising_handle, 6258 big->params->num_bis, 6259 big->params->sdu_interval_us, 6260 big->params->max_sdu, 6261 big->params->max_transport_latency_ms, 6262 big->params->rtn, 6263 big->params->phy, 6264 big->params->packing, 6265 big->params->framing, 6266 big->params->encryption, 6267 big->params->broadcast_code); 6268 return true; 6269 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6270 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6271 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); 6272 return true; 6273 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6274 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6275 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6276 return true; 6277 case LE_AUDIO_BIG_STATE_TERMINATE: 6278 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6279 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6280 return true; 6281 default: 6282 break; 6283 } 6284 } 6285 6286 // BIG Sync 6287 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6288 while (btstack_linked_list_iterator_has_next(&it)){ 6289 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6290 switch (big_sync->state){ 6291 case LE_AUDIO_BIG_STATE_CREATE: 6292 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6293 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6294 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6295 hci_send_cmd(&hci_le_big_create_sync, 6296 big_sync->params->big_handle, 6297 big_sync->params->sync_handle, 6298 big_sync->params->encryption, 6299 big_sync->params->broadcast_code, 6300 big_sync->params->mse, 6301 big_sync->params->big_sync_timeout_10ms, 6302 big_sync->params->num_bis, 6303 big_sync->params->bis_indices); 6304 return true; 6305 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6306 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6307 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); 6308 return true; 6309 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6310 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6311 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6312 return true; 6313 case LE_AUDIO_BIG_STATE_TERMINATE: 6314 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6315 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6316 return true; 6317 default: 6318 break; 6319 } 6320 } 6321 6322 // CIG 6323 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6324 while (btstack_linked_list_iterator_has_next(&it)) { 6325 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6326 uint8_t i; 6327 // Set CIG Parameters 6328 uint8_t cis_id[MAX_NR_CIS]; 6329 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6330 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6331 uint8_t phy_c_to_p[MAX_NR_CIS]; 6332 uint8_t phy_p_to_c[MAX_NR_CIS]; 6333 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6334 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6335 switch (cig->state) { 6336 case LE_AUDIO_CIG_STATE_CREATE: 6337 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6338 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6339 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6340 le_audio_cig_params_t * params = cig->params; 6341 for (i = 0; i < params->num_cis; i++) { 6342 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6343 cis_id[i] = cis_params->cis_id; 6344 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6345 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6346 phy_c_to_p[i] = cis_params->phy_c_to_p; 6347 phy_p_to_c[i] = cis_params->phy_p_to_c; 6348 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6349 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6350 } 6351 hci_send_cmd(&hci_le_set_cig_parameters, 6352 cig->cig_id, 6353 params->sdu_interval_c_to_p, 6354 params->sdu_interval_p_to_c, 6355 params->worst_case_sca, 6356 params->packing, 6357 params->framing, 6358 params->max_transport_latency_c_to_p, 6359 params->max_transport_latency_p_to_c, 6360 params->num_cis, 6361 cis_id, 6362 max_sdu_c_to_p, 6363 max_sdu_p_to_c, 6364 phy_c_to_p, 6365 phy_p_to_c, 6366 rtn_c_to_p, 6367 rtn_p_to_c 6368 ); 6369 return true; 6370 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6371 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6372 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6373 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6374 for (i=0;i<cig->num_cis;i++){ 6375 cig->cis_setup_active[i] = true; 6376 } 6377 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6378 return true; 6379 default: 6380 break; 6381 } 6382 } 6383 6384 return false; 6385 } 6386 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6387 #endif 6388 6389 static bool hci_run_general_pending_commands(void){ 6390 btstack_linked_item_t * it; 6391 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6392 hci_connection_t * connection = (hci_connection_t *) it; 6393 6394 switch(connection->state){ 6395 case SEND_CREATE_CONNECTION: 6396 switch(connection->address_type){ 6397 #ifdef ENABLE_CLASSIC 6398 case BD_ADDR_TYPE_ACL: 6399 log_info("sending hci_create_connection"); 6400 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6401 break; 6402 #endif 6403 default: 6404 #ifdef ENABLE_BLE 6405 #ifdef ENABLE_LE_CENTRAL 6406 log_info("sending hci_le_create_connection"); 6407 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6408 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6409 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6410 if (hci_extended_advertising_supported()) { 6411 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6412 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6413 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6414 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6415 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6416 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6417 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6418 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6419 hci_send_cmd(&hci_le_extended_create_connection, 6420 0, // don't use whitelist 6421 hci_stack->le_connection_own_addr_type, // our addr type: 6422 connection->address_type, // peer address type 6423 connection->address, // peer bd addr 6424 1, // initiating PHY - 1M 6425 le_connection_scan_interval, // conn scan interval 6426 le_connection_scan_window, // conn scan windows 6427 le_connection_interval_min, // conn interval min 6428 le_connection_interval_max, // conn interval max 6429 le_connection_latency, // conn latency 6430 le_supervision_timeout, // conn latency 6431 le_minimum_ce_length, // min ce length 6432 le_maximum_ce_length // max ce length 6433 ); } 6434 else 6435 #endif 6436 { 6437 hci_send_cmd(&hci_le_create_connection, 6438 hci_stack->le_connection_scan_interval, // conn scan interval 6439 hci_stack->le_connection_scan_window, // conn scan windows 6440 0, // don't use whitelist 6441 connection->address_type, // peer address type 6442 connection->address, // peer bd addr 6443 hci_stack->le_connection_own_addr_type, // our addr type: 6444 hci_stack->le_connection_interval_min, // conn interval min 6445 hci_stack->le_connection_interval_max, // conn interval max 6446 hci_stack->le_connection_latency, // conn latency 6447 hci_stack->le_supervision_timeout, // conn latency 6448 hci_stack->le_minimum_ce_length, // min ce length 6449 hci_stack->le_maximum_ce_length // max ce length 6450 ); 6451 } 6452 connection->state = SENT_CREATE_CONNECTION; 6453 #endif 6454 #endif 6455 break; 6456 } 6457 return true; 6458 6459 #ifdef ENABLE_CLASSIC 6460 case RECEIVED_CONNECTION_REQUEST: 6461 connection->role = HCI_ROLE_SLAVE; 6462 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6463 log_info("sending hci_accept_connection_request"); 6464 connection->state = ACCEPTED_CONNECTION_REQUEST; 6465 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6466 return true; 6467 } 6468 break; 6469 #endif 6470 case SEND_DISCONNECT: 6471 connection->state = SENT_DISCONNECT; 6472 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6473 return true; 6474 6475 default: 6476 break; 6477 } 6478 6479 // no further commands if connection is about to get shut down 6480 if (connection->state == SENT_DISCONNECT) continue; 6481 6482 #ifdef ENABLE_CLASSIC 6483 6484 // Handling link key request requires remote supported features 6485 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6486 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6487 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6488 6489 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6490 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6491 if (have_link_key && security_level_sufficient){ 6492 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6493 } else { 6494 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6495 } 6496 return true; 6497 } 6498 6499 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6500 log_info("denying to pin request"); 6501 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6502 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6503 return true; 6504 } 6505 6506 // security assessment requires remote features 6507 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6508 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6509 hci_ssp_assess_security_on_io_cap_request(connection); 6510 // 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 6511 } 6512 6513 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6514 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6515 // set authentication requirements: 6516 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6517 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6518 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6519 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6520 authreq |= 1; 6521 } 6522 bool bonding = hci_stack->bondable; 6523 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6524 // if we have received IO Cap Response, we're in responder role 6525 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6526 if (bonding && !remote_bonding){ 6527 log_info("Remote not bonding, dropping local flag"); 6528 bonding = false; 6529 } 6530 } 6531 if (bonding){ 6532 if (connection->bonding_flags & BONDING_DEDICATED){ 6533 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6534 } else { 6535 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6536 } 6537 } 6538 uint8_t have_oob_data = 0; 6539 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6540 if (connection->classic_oob_c_192 != NULL){ 6541 have_oob_data |= 1; 6542 } 6543 if (connection->classic_oob_c_256 != NULL){ 6544 have_oob_data |= 2; 6545 } 6546 #endif 6547 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6548 return true; 6549 } 6550 6551 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6552 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6553 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6554 return true; 6555 } 6556 6557 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6558 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6559 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6560 const uint8_t zero[16] = { 0 }; 6561 const uint8_t * r_192 = zero; 6562 const uint8_t * c_192 = zero; 6563 const uint8_t * r_256 = zero; 6564 const uint8_t * c_256 = zero; 6565 // verify P-256 OOB 6566 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6567 c_256 = connection->classic_oob_c_256; 6568 if (connection->classic_oob_r_256 != NULL) { 6569 r_256 = connection->classic_oob_r_256; 6570 } 6571 } 6572 // verify P-192 OOB 6573 if ((connection->classic_oob_c_192 != NULL)) { 6574 c_192 = connection->classic_oob_c_192; 6575 if (connection->classic_oob_r_192 != NULL) { 6576 r_192 = connection->classic_oob_r_192; 6577 } 6578 } 6579 6580 // assess security 6581 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6582 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6583 if (need_level_4 && !can_reach_level_4){ 6584 log_info("Level 4 required, but not possible -> abort"); 6585 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6586 // send oob negative reply 6587 c_256 = NULL; 6588 c_192 = NULL; 6589 } 6590 6591 // Reply 6592 if (c_256 != zero) { 6593 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6594 } else if (c_192 != zero){ 6595 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6596 } else { 6597 hci_stack->classic_oob_con_handle = connection->con_handle; 6598 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6599 } 6600 return true; 6601 } 6602 #endif 6603 6604 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6605 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6606 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6607 return true; 6608 } 6609 6610 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6611 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6612 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6613 return true; 6614 } 6615 6616 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6617 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6618 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6619 return true; 6620 } 6621 6622 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6623 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6624 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6625 connection->state = SENT_DISCONNECT; 6626 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6627 return true; 6628 } 6629 6630 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6631 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6632 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6633 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6634 return true; 6635 } 6636 6637 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6638 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6639 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6640 return true; 6641 } 6642 6643 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6644 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6645 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6646 return true; 6647 } 6648 6649 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6650 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6651 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6652 return true; 6653 } 6654 6655 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6656 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6657 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6658 return true; 6659 } 6660 6661 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6662 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6663 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6664 return true; 6665 } 6666 #endif 6667 6668 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6669 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6670 #ifdef ENABLE_CLASSIC 6671 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6672 #endif 6673 if (connection->state != SENT_DISCONNECT){ 6674 connection->state = SENT_DISCONNECT; 6675 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6676 return true; 6677 } 6678 } 6679 6680 #ifdef ENABLE_CLASSIC 6681 uint16_t sniff_min_interval; 6682 switch (connection->sniff_min_interval){ 6683 case 0: 6684 break; 6685 case 0xffff: 6686 connection->sniff_min_interval = 0; 6687 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6688 return true; 6689 default: 6690 sniff_min_interval = connection->sniff_min_interval; 6691 connection->sniff_min_interval = 0; 6692 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6693 return true; 6694 } 6695 6696 if (connection->sniff_subrating_max_latency != 0xffff){ 6697 uint16_t max_latency = connection->sniff_subrating_max_latency; 6698 connection->sniff_subrating_max_latency = 0; 6699 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6700 return true; 6701 } 6702 6703 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6704 uint8_t service_type = (uint8_t) connection->qos_service_type; 6705 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6706 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); 6707 return true; 6708 } 6709 6710 if (connection->request_role != HCI_ROLE_INVALID){ 6711 hci_role_t role = connection->request_role; 6712 connection->request_role = HCI_ROLE_INVALID; 6713 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6714 return true; 6715 } 6716 #endif 6717 6718 if (connection->gap_connection_tasks != 0){ 6719 #ifdef ENABLE_CLASSIC 6720 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6721 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6722 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6723 return true; 6724 } 6725 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6726 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6727 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6728 return true; 6729 } 6730 #endif 6731 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6732 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6733 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6734 return true; 6735 } 6736 } 6737 6738 #ifdef ENABLE_BLE 6739 switch (connection->le_con_parameter_update_state){ 6740 // response to L2CAP CON PARAMETER UPDATE REQUEST 6741 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6742 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6743 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6744 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6745 0x0000, 0xffff); 6746 return true; 6747 case CON_PARAMETER_UPDATE_REPLY: 6748 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6749 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6750 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6751 0x0000, 0xffff); 6752 return true; 6753 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6754 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6755 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6756 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6757 return true; 6758 default: 6759 break; 6760 } 6761 if (connection->le_phy_update_all_phys != 0xffu){ 6762 uint8_t all_phys = connection->le_phy_update_all_phys; 6763 connection->le_phy_update_all_phys = 0xff; 6764 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); 6765 return true; 6766 } 6767 #endif 6768 } 6769 return false; 6770 } 6771 6772 static void hci_run(void){ 6773 6774 // stack state sub statemachines 6775 switch (hci_stack->state) { 6776 case HCI_STATE_INITIALIZING: 6777 hci_initializing_run(); 6778 break; 6779 case HCI_STATE_HALTING: 6780 hci_halting_run(); 6781 break; 6782 case HCI_STATE_FALLING_ASLEEP: 6783 hci_falling_asleep_run(); 6784 break; 6785 default: 6786 break; 6787 } 6788 6789 // allow to run after initialization to working transition 6790 if (hci_stack->state != HCI_STATE_WORKING){ 6791 return; 6792 } 6793 6794 bool done; 6795 6796 // send continuation fragments first, as they block the prepared packet buffer 6797 done = hci_run_acl_fragments(); 6798 if (done) return; 6799 6800 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6801 done = hci_run_iso_fragments(); 6802 if (done) return; 6803 #endif 6804 6805 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6806 // send host num completed packets next as they don't require num_cmd_packets > 0 6807 if (!hci_can_send_comand_packet_transport()) return; 6808 if (hci_stack->host_completed_packets){ 6809 hci_host_num_completed_packets(); 6810 return; 6811 } 6812 #endif 6813 6814 if (!hci_can_send_command_packet_now()) return; 6815 6816 // global/non-connection oriented commands 6817 6818 6819 #ifdef ENABLE_CLASSIC 6820 // general gap classic 6821 done = hci_run_general_gap_classic(); 6822 if (done) return; 6823 #endif 6824 6825 #ifdef ENABLE_BLE 6826 // general gap le 6827 done = hci_run_general_gap_le(); 6828 if (done) return; 6829 6830 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6831 // ISO related tasks, e.g. BIG create/terminate/sync 6832 done = hci_run_iso_tasks(); 6833 if (done) return; 6834 #endif 6835 #endif 6836 6837 // send pending HCI commands 6838 hci_run_general_pending_commands(); 6839 } 6840 6841 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6842 // house-keeping 6843 6844 #ifdef ENABLE_CLASSIC 6845 bd_addr_t addr; 6846 hci_connection_t * conn; 6847 #endif 6848 #ifdef ENABLE_LE_CENTRAL 6849 uint8_t initiator_filter_policy; 6850 #endif 6851 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6852 uint8_t i; 6853 uint8_t num_cis; 6854 hci_con_handle_t cis_handle; 6855 uint8_t status; 6856 #endif 6857 6858 uint16_t opcode = little_endian_read_16(packet, 0); 6859 switch (opcode) { 6860 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6861 hci_stack->loopback_mode = packet[3]; 6862 break; 6863 6864 #ifdef ENABLE_CLASSIC 6865 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6866 reverse_bd_addr(&packet[3], addr); 6867 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6868 6869 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6870 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6871 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6872 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6873 } 6874 6875 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6876 if (!conn) { 6877 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6878 if (!conn) { 6879 // notify client that alloc failed 6880 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6881 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6882 } 6883 conn->state = SEND_CREATE_CONNECTION; 6884 conn->role = HCI_ROLE_MASTER; 6885 } 6886 6887 log_info("conn state %u", conn->state); 6888 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6889 switch (conn->state) { 6890 // if connection active exists 6891 case OPEN: 6892 // and OPEN, emit connection complete command 6893 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6894 // packet not sent to controller 6895 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6896 case RECEIVED_DISCONNECTION_COMPLETE: 6897 // create connection triggered in disconnect complete event, let's do it now 6898 break; 6899 case SEND_CREATE_CONNECTION: 6900 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6901 if (hci_classic_operation_active()){ 6902 return ERROR_CODE_SUCCESS; 6903 } 6904 #endif 6905 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6906 break; 6907 default: 6908 // otherwise, just ignore as it is already in the open process 6909 // packet not sent to controller 6910 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6911 } 6912 conn->state = SENT_CREATE_CONNECTION; 6913 6914 // track outgoing connection 6915 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6916 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6917 break; 6918 6919 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6920 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6921 // setup_synchronous_connection? Voice setting at offset 22 6922 // TODO: compare to current setting if sco connection already active 6923 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6924 break; 6925 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6926 // accept_synchronous_connection? Voice setting at offset 18 6927 // TODO: compare to current setting if sco connection already active 6928 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6929 // track outgoing connection 6930 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6931 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6932 break; 6933 #endif 6934 #endif 6935 6936 #ifdef ENABLE_BLE 6937 #ifdef ENABLE_LE_CENTRAL 6938 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6939 // white list used? 6940 initiator_filter_policy = packet[7]; 6941 switch (initiator_filter_policy) { 6942 case 0: 6943 // whitelist not used 6944 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6945 break; 6946 case 1: 6947 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6948 break; 6949 default: 6950 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6951 break; 6952 } 6953 // track outgoing connection 6954 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6955 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6956 break; 6957 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6958 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6959 break; 6960 #endif 6961 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6962 #ifdef ENABLE_LE_CENTRAL 6963 case HCI_OPCODE_HCI_LE_CREATE_CIS: 6964 status = ERROR_CODE_SUCCESS; 6965 num_cis = packet[3]; 6966 // setup hci_iso_streams 6967 for (i=0;i<num_cis;i++){ 6968 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 4 + (4 * i)); 6969 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, cis_handle, 0xff); 6970 if (status != ERROR_CODE_SUCCESS) { 6971 break; 6972 } 6973 } 6974 // free structs on error 6975 if (status != ERROR_CODE_SUCCESS){ 6976 hci_iso_stream_requested_finalize(0xff); 6977 return status; 6978 } 6979 break; 6980 #endif /* ENABLE_LE_CENTRAL */ 6981 #ifdef ENABLE_LE_PERIPHERAL 6982 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 6983 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 3); 6984 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, cis_handle, 0xff); 6985 if (status != ERROR_CODE_SUCCESS){ 6986 return status; 6987 } 6988 break; 6989 #endif /* ENABLE_LE_PERIPHERAL */ 6990 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6991 #endif /* ENABLE_BLE */ 6992 default: 6993 break; 6994 } 6995 6996 hci_stack->num_cmd_packets--; 6997 6998 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6999 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7000 if (err != 0){ 7001 return ERROR_CODE_HARDWARE_FAILURE; 7002 } 7003 return ERROR_CODE_SUCCESS; 7004 } 7005 7006 // disconnect because of security block 7007 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7008 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7009 if (!connection) return; 7010 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7011 } 7012 7013 7014 // Configure Secure Simple Pairing 7015 7016 #ifdef ENABLE_CLASSIC 7017 7018 // enable will enable SSP during init 7019 void gap_ssp_set_enable(int enable){ 7020 hci_stack->ssp_enable = enable; 7021 } 7022 7023 static int hci_local_ssp_activated(void){ 7024 return gap_ssp_supported() && hci_stack->ssp_enable; 7025 } 7026 7027 // if set, BTstack will respond to io capability request using authentication requirement 7028 void gap_ssp_set_io_capability(int io_capability){ 7029 hci_stack->ssp_io_capability = io_capability; 7030 } 7031 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7032 hci_stack->ssp_authentication_requirement = authentication_requirement; 7033 } 7034 7035 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7036 void gap_ssp_set_auto_accept(int auto_accept){ 7037 hci_stack->ssp_auto_accept = auto_accept; 7038 } 7039 7040 void gap_secure_connections_enable(bool enable){ 7041 hci_stack->secure_connections_enable = enable; 7042 } 7043 bool gap_secure_connections_active(void){ 7044 return hci_stack->secure_connections_active; 7045 } 7046 7047 #endif 7048 7049 // va_list part of hci_send_cmd 7050 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7051 if (!hci_can_send_command_packet_now()){ 7052 log_error("hci_send_cmd called but cannot send packet now"); 7053 return ERROR_CODE_COMMAND_DISALLOWED; 7054 } 7055 7056 // for HCI INITIALIZATION 7057 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7058 hci_stack->last_cmd_opcode = cmd->opcode; 7059 7060 hci_reserve_packet_buffer(); 7061 uint8_t * packet = hci_stack->hci_packet_buffer; 7062 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7063 uint8_t status = hci_send_cmd_packet(packet, size); 7064 7065 // release packet buffer on error or for synchronous transport implementations 7066 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7067 hci_release_packet_buffer(); 7068 hci_emit_transport_packet_sent(); 7069 } 7070 7071 return status; 7072 } 7073 7074 /** 7075 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7076 */ 7077 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7078 va_list argptr; 7079 va_start(argptr, cmd); 7080 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7081 va_end(argptr); 7082 return status; 7083 } 7084 7085 // Create various non-HCI events. 7086 // TODO: generalize, use table similar to hci_create_command 7087 7088 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7089 // dump packet 7090 if (dump) { 7091 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7092 } 7093 7094 // dispatch to all event handlers 7095 btstack_linked_list_iterator_t it; 7096 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7097 while (btstack_linked_list_iterator_has_next(&it)){ 7098 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7099 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7100 } 7101 } 7102 7103 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7104 if (!hci_stack->acl_packet_handler) return; 7105 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7106 } 7107 7108 #ifdef ENABLE_CLASSIC 7109 static void hci_notify_if_sco_can_send_now(void){ 7110 // notify SCO sender if waiting 7111 if (!hci_stack->sco_waiting_for_can_send_now) return; 7112 if (hci_can_send_sco_packet_now()){ 7113 hci_stack->sco_waiting_for_can_send_now = 0; 7114 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7115 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7116 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7117 } 7118 } 7119 7120 // parsing end emitting has been merged to reduce code size 7121 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7122 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7123 7124 uint8_t * eir_data; 7125 ad_context_t context; 7126 const uint8_t * name; 7127 uint8_t name_len; 7128 7129 if (size < 3) return; 7130 7131 int event_type = hci_event_packet_get_type(packet); 7132 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7133 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7134 7135 switch (event_type){ 7136 case HCI_EVENT_INQUIRY_RESULT: 7137 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7138 if (size != (3 + (num_responses * 14))) return; 7139 break; 7140 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7141 if (size != 257) return; 7142 if (num_responses != 1) return; 7143 break; 7144 default: 7145 return; 7146 } 7147 7148 // event[1] is set at the end 7149 int i; 7150 for (i=0; i<num_responses;i++){ 7151 memset(event, 0, sizeof(event)); 7152 event[0] = GAP_EVENT_INQUIRY_RESULT; 7153 uint8_t event_size = 27; // if name is not set by EIR 7154 7155 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7156 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7157 (void)memcpy(&event[9], 7158 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7159 3); // class of device 7160 (void)memcpy(&event[12], 7161 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7162 2); // clock offset 7163 7164 switch (event_type){ 7165 case HCI_EVENT_INQUIRY_RESULT: 7166 // 14,15,16,17 = 0, size 18 7167 break; 7168 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7169 event[14] = 1; 7170 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7171 // 16,17 = 0, size 18 7172 break; 7173 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7174 event[14] = 1; 7175 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7176 // EIR packets only contain a single inquiry response 7177 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7178 name = NULL; 7179 // Iterate over EIR data 7180 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7181 uint8_t data_type = ad_iterator_get_data_type(&context); 7182 uint8_t data_size = ad_iterator_get_data_len(&context); 7183 const uint8_t * data = ad_iterator_get_data(&context); 7184 // Prefer Complete Local Name over Shortened Local Name 7185 switch (data_type){ 7186 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7187 if (name) continue; 7188 /* fall through */ 7189 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7190 name = data; 7191 name_len = data_size; 7192 break; 7193 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7194 if (data_size != 8) break; 7195 event[16] = 1; 7196 memcpy(&event[17], data, 8); 7197 break; 7198 default: 7199 break; 7200 } 7201 } 7202 if (name){ 7203 event[25] = 1; 7204 // truncate name if needed 7205 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7206 event[26] = len; 7207 (void)memcpy(&event[27], name, len); 7208 event_size += len; 7209 } 7210 break; 7211 default: 7212 return; 7213 } 7214 event[1] = event_size - 2; 7215 hci_emit_event(event, event_size, 1); 7216 } 7217 } 7218 #endif 7219 7220 void hci_emit_state(void){ 7221 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7222 uint8_t event[3]; 7223 event[0] = BTSTACK_EVENT_STATE; 7224 event[1] = sizeof(event) - 2u; 7225 event[2] = hci_stack->state; 7226 hci_emit_event(event, sizeof(event), 1); 7227 } 7228 7229 #ifdef ENABLE_CLASSIC 7230 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7231 uint8_t event[13]; 7232 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7233 event[1] = sizeof(event) - 2; 7234 event[2] = status; 7235 little_endian_store_16(event, 3, con_handle); 7236 reverse_bd_addr(address, &event[5]); 7237 event[11] = 1; // ACL connection 7238 event[12] = 0; // encryption disabled 7239 hci_emit_event(event, sizeof(event), 1); 7240 } 7241 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7242 if (disable_l2cap_timeouts) return; 7243 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7244 uint8_t event[4]; 7245 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7246 event[1] = sizeof(event) - 2; 7247 little_endian_store_16(event, 2, conn->con_handle); 7248 hci_emit_event(event, sizeof(event), 1); 7249 } 7250 #endif 7251 7252 #ifdef ENABLE_BLE 7253 #ifdef ENABLE_LE_CENTRAL 7254 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){ 7255 uint8_t event[21]; 7256 event[0] = HCI_EVENT_LE_META; 7257 event[1] = sizeof(event) - 2u; 7258 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7259 event[3] = status; 7260 little_endian_store_16(event, 4, con_handle); 7261 event[6] = 0; // TODO: role 7262 event[7] = address_type; 7263 reverse_bd_addr(address, &event[8]); 7264 little_endian_store_16(event, 14, 0); // interval 7265 little_endian_store_16(event, 16, 0); // latency 7266 little_endian_store_16(event, 18, 0); // supervision timeout 7267 event[20] = 0; // master clock accuracy 7268 hci_emit_event(event, sizeof(event), 1); 7269 } 7270 #endif 7271 #endif 7272 7273 static void hci_emit_transport_packet_sent(void){ 7274 // notify upper stack that it might be possible to send again 7275 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7276 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7277 } 7278 7279 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7280 uint8_t event[6]; 7281 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7282 event[1] = sizeof(event) - 2u; 7283 event[2] = 0; // status = OK 7284 little_endian_store_16(event, 3, con_handle); 7285 event[5] = reason; 7286 hci_emit_event(event, sizeof(event), 1); 7287 } 7288 7289 static void hci_emit_nr_connections_changed(void){ 7290 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7291 uint8_t event[3]; 7292 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7293 event[1] = sizeof(event) - 2u; 7294 event[2] = nr_hci_connections(); 7295 hci_emit_event(event, sizeof(event), 1); 7296 } 7297 7298 static void hci_emit_hci_open_failed(void){ 7299 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7300 uint8_t event[2]; 7301 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7302 event[1] = sizeof(event) - 2u; 7303 hci_emit_event(event, sizeof(event), 1); 7304 } 7305 7306 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7307 log_info("hci_emit_dedicated_bonding_result %u ", status); 7308 uint8_t event[9]; 7309 int pos = 0; 7310 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7311 event[pos++] = sizeof(event) - 2u; 7312 event[pos++] = status; 7313 reverse_bd_addr(address, &event[pos]); 7314 hci_emit_event(event, sizeof(event), 1); 7315 } 7316 7317 7318 #ifdef ENABLE_CLASSIC 7319 7320 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7321 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7322 uint8_t event[5]; 7323 int pos = 0; 7324 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7325 event[pos++] = sizeof(event) - 2; 7326 little_endian_store_16(event, 2, con_handle); 7327 pos += 2; 7328 event[pos++] = level; 7329 hci_emit_event(event, sizeof(event), 1); 7330 } 7331 7332 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7333 if (!connection) return LEVEL_0; 7334 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7335 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7336 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7337 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7338 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7339 // LEVEL 4 always requires 128 bit encrytion key size 7340 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7341 security_level = LEVEL_3; 7342 } 7343 return security_level; 7344 } 7345 7346 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7347 uint8_t event[4]; 7348 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7349 event[1] = sizeof(event) - 2; 7350 event[2] = discoverable; 7351 event[3] = connectable; 7352 hci_emit_event(event, sizeof(event), 1); 7353 } 7354 7355 // query if remote side supports eSCO 7356 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7357 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7358 if (!connection) return false; 7359 return (connection->remote_supported_features[0] & 1) != 0; 7360 } 7361 7362 static bool hci_ssp_supported(hci_connection_t * connection){ 7363 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7364 return (connection->bonding_flags & mask) == mask; 7365 } 7366 7367 // query if remote side supports SSP 7368 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7369 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7370 if (!connection) return false; 7371 return hci_ssp_supported(connection) ? 1 : 0; 7372 } 7373 7374 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7375 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7376 } 7377 7378 /** 7379 * Check if remote supported features query has completed 7380 */ 7381 bool hci_remote_features_available(hci_con_handle_t handle){ 7382 hci_connection_t * connection = hci_connection_for_handle(handle); 7383 if (!connection) return false; 7384 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7385 } 7386 7387 /** 7388 * Trigger remote supported features query 7389 */ 7390 7391 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7392 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7393 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7394 } 7395 } 7396 7397 void hci_remote_features_query(hci_con_handle_t con_handle){ 7398 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7399 if (!connection) return; 7400 hci_trigger_remote_features_for_connection(connection); 7401 hci_run(); 7402 } 7403 7404 // GAP API 7405 /** 7406 * @bbrief enable/disable bonding. default is enabled 7407 * @praram enabled 7408 */ 7409 void gap_set_bondable_mode(int enable){ 7410 hci_stack->bondable = enable ? 1 : 0; 7411 } 7412 /** 7413 * @brief Get bondable mode. 7414 * @return 1 if bondable 7415 */ 7416 int gap_get_bondable_mode(void){ 7417 return hci_stack->bondable; 7418 } 7419 7420 /** 7421 * @brief map link keys to security levels 7422 */ 7423 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7424 switch (link_key_type){ 7425 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7426 return LEVEL_4; 7427 case COMBINATION_KEY: 7428 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7429 return LEVEL_3; 7430 default: 7431 return LEVEL_2; 7432 } 7433 } 7434 7435 /** 7436 * @brief map link keys to secure connection yes/no 7437 */ 7438 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7439 switch (link_key_type){ 7440 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7441 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7442 return true; 7443 default: 7444 return false; 7445 } 7446 } 7447 7448 /** 7449 * @brief map link keys to authenticated 7450 */ 7451 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7452 switch (link_key_type){ 7453 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7454 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7455 return true; 7456 default: 7457 return false; 7458 } 7459 } 7460 7461 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7462 log_info("gap_mitm_protection_required_for_security_level %u", level); 7463 return level > LEVEL_2; 7464 } 7465 7466 /** 7467 * @brief get current security level 7468 */ 7469 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7470 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7471 if (!connection) return LEVEL_0; 7472 return gap_security_level_for_connection(connection); 7473 } 7474 7475 /** 7476 * @brief request connection to device to 7477 * @result GAP_AUTHENTICATION_RESULT 7478 */ 7479 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7480 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7481 if (!connection){ 7482 hci_emit_security_level(con_handle, LEVEL_0); 7483 return; 7484 } 7485 7486 btstack_assert(hci_is_le_connection(connection) == false); 7487 7488 // 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) 7489 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7490 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7491 requested_level = LEVEL_4; 7492 } 7493 7494 gap_security_level_t current_level = gap_security_level(con_handle); 7495 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7496 requested_level, connection->requested_security_level, current_level); 7497 7498 // authentication active if authentication request was sent or planned level > 0 7499 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7500 if (authentication_active){ 7501 // authentication already active 7502 if (connection->requested_security_level < requested_level){ 7503 // increase requested level as new level is higher 7504 // TODO: handle re-authentication when done 7505 connection->requested_security_level = requested_level; 7506 } 7507 } else { 7508 // no request active, notify if security sufficient 7509 if (requested_level <= current_level){ 7510 hci_emit_security_level(con_handle, current_level); 7511 return; 7512 } 7513 7514 // store request 7515 connection->requested_security_level = requested_level; 7516 7517 // start to authenticate connection 7518 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7519 7520 // request remote features if not already active, also trigger hci_run 7521 hci_remote_features_query(con_handle); 7522 } 7523 } 7524 7525 /** 7526 * @brief start dedicated bonding with device. disconnect after bonding 7527 * @param device 7528 * @param request MITM protection 7529 * @result GAP_DEDICATED_BONDING_COMPLETE 7530 */ 7531 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7532 7533 // create connection state machine 7534 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7535 7536 if (!connection){ 7537 return BTSTACK_MEMORY_ALLOC_FAILED; 7538 } 7539 7540 // delete linkn key 7541 gap_drop_link_key_for_bd_addr(device); 7542 7543 // configure LEVEL_2/3, dedicated bonding 7544 connection->state = SEND_CREATE_CONNECTION; 7545 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7546 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7547 connection->bonding_flags = BONDING_DEDICATED; 7548 7549 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7550 7551 // handle: connnection failure (connection complete != ok) 7552 // handle: authentication failure 7553 // handle: disconnect on done 7554 7555 hci_run(); 7556 7557 return 0; 7558 } 7559 7560 void gap_set_local_name(const char * local_name){ 7561 hci_stack->local_name = local_name; 7562 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7563 // also update EIR if not set by user 7564 if (hci_stack->eir_data == NULL){ 7565 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7566 } 7567 hci_run(); 7568 } 7569 #endif 7570 7571 7572 #ifdef ENABLE_BLE 7573 7574 #ifdef ENABLE_LE_CENTRAL 7575 void gap_start_scan(void){ 7576 hci_stack->le_scanning_enabled = true; 7577 hci_run(); 7578 } 7579 7580 void gap_stop_scan(void){ 7581 hci_stack->le_scanning_enabled = false; 7582 hci_run(); 7583 } 7584 7585 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7586 hci_stack->le_scan_type = scan_type; 7587 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7588 hci_stack->le_scan_interval = scan_interval; 7589 hci_stack->le_scan_window = scan_window; 7590 hci_stack->le_scanning_param_update = true; 7591 hci_run(); 7592 } 7593 7594 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7595 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7596 } 7597 7598 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7599 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7600 if (!conn){ 7601 // disallow if le connection is already outgoing 7602 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7603 log_error("le connection already active"); 7604 return ERROR_CODE_COMMAND_DISALLOWED; 7605 } 7606 7607 log_info("gap_connect: no connection exists yet, creating context"); 7608 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7609 if (!conn){ 7610 // notify client that alloc failed 7611 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7612 log_info("gap_connect: failed to alloc hci_connection_t"); 7613 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7614 } 7615 7616 // set le connecting state 7617 if (hci_is_le_connection_type(addr_type)){ 7618 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7619 } 7620 7621 conn->state = SEND_CREATE_CONNECTION; 7622 log_info("gap_connect: send create connection next"); 7623 hci_run(); 7624 return ERROR_CODE_SUCCESS; 7625 } 7626 7627 if (!hci_is_le_connection(conn) || 7628 (conn->state == SEND_CREATE_CONNECTION) || 7629 (conn->state == SENT_CREATE_CONNECTION)) { 7630 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7631 log_error("gap_connect: classic connection or connect is already being created"); 7632 return GATT_CLIENT_IN_WRONG_STATE; 7633 } 7634 7635 // check if connection was just disconnected 7636 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7637 log_info("gap_connect: send create connection (again)"); 7638 conn->state = SEND_CREATE_CONNECTION; 7639 hci_run(); 7640 return ERROR_CODE_SUCCESS; 7641 } 7642 7643 log_info("gap_connect: context exists with state %u", conn->state); 7644 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7645 hci_run(); 7646 return ERROR_CODE_SUCCESS; 7647 } 7648 7649 // @assumption: only a single outgoing LE Connection exists 7650 static hci_connection_t * gap_get_outgoing_connection(void){ 7651 btstack_linked_item_t *it; 7652 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7653 hci_connection_t * conn = (hci_connection_t *) it; 7654 if (!hci_is_le_connection(conn)) continue; 7655 switch (conn->state){ 7656 case SEND_CREATE_CONNECTION: 7657 case SENT_CREATE_CONNECTION: 7658 return conn; 7659 default: 7660 break; 7661 }; 7662 } 7663 return NULL; 7664 } 7665 7666 uint8_t gap_connect_cancel(void){ 7667 hci_connection_t * conn; 7668 switch (hci_stack->le_connecting_request){ 7669 case LE_CONNECTING_IDLE: 7670 break; 7671 case LE_CONNECTING_WHITELIST: 7672 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7673 hci_run(); 7674 break; 7675 case LE_CONNECTING_DIRECT: 7676 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7677 conn = gap_get_outgoing_connection(); 7678 if (conn == NULL){ 7679 hci_run(); 7680 } else { 7681 switch (conn->state){ 7682 case SEND_CREATE_CONNECTION: 7683 // skip sending create connection and emit event instead 7684 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7685 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7686 btstack_memory_hci_connection_free( conn ); 7687 break; 7688 case SENT_CREATE_CONNECTION: 7689 // let hci_run_general_gap_le cancel outgoing connection 7690 hci_run(); 7691 break; 7692 default: 7693 break; 7694 } 7695 } 7696 break; 7697 default: 7698 btstack_unreachable(); 7699 break; 7700 } 7701 return ERROR_CODE_SUCCESS; 7702 } 7703 7704 /** 7705 * @brief Set connection parameters for outgoing connections 7706 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7707 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7708 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7709 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7710 * @param conn_latency, default: 4 7711 * @param supervision_timeout (unit: 10ms), default: 720 ms 7712 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7713 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7714 */ 7715 7716 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7717 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7718 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7719 hci_stack->le_connection_scan_interval = conn_scan_interval; 7720 hci_stack->le_connection_scan_window = conn_scan_window; 7721 hci_stack->le_connection_interval_min = conn_interval_min; 7722 hci_stack->le_connection_interval_max = conn_interval_max; 7723 hci_stack->le_connection_latency = conn_latency; 7724 hci_stack->le_supervision_timeout = supervision_timeout; 7725 hci_stack->le_minimum_ce_length = min_ce_length; 7726 hci_stack->le_maximum_ce_length = max_ce_length; 7727 } 7728 #endif 7729 7730 /** 7731 * @brief Updates the connection parameters for a given LE connection 7732 * @param handle 7733 * @param conn_interval_min (unit: 1.25ms) 7734 * @param conn_interval_max (unit: 1.25ms) 7735 * @param conn_latency 7736 * @param supervision_timeout (unit: 10ms) 7737 * @return 0 if ok 7738 */ 7739 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7740 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7741 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7742 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7743 connection->le_conn_interval_min = conn_interval_min; 7744 connection->le_conn_interval_max = conn_interval_max; 7745 connection->le_conn_latency = conn_latency; 7746 connection->le_supervision_timeout = supervision_timeout; 7747 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7748 hci_run(); 7749 return 0; 7750 } 7751 7752 /** 7753 * @brief Request an update of the connection parameter for a given LE connection 7754 * @param handle 7755 * @param conn_interval_min (unit: 1.25ms) 7756 * @param conn_interval_max (unit: 1.25ms) 7757 * @param conn_latency 7758 * @param supervision_timeout (unit: 10ms) 7759 * @return 0 if ok 7760 */ 7761 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7762 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7763 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7764 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7765 connection->le_conn_interval_min = conn_interval_min; 7766 connection->le_conn_interval_max = conn_interval_max; 7767 connection->le_conn_latency = conn_latency; 7768 connection->le_supervision_timeout = supervision_timeout; 7769 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7770 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7771 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7772 return 0; 7773 } 7774 7775 #ifdef ENABLE_LE_PERIPHERAL 7776 7777 /** 7778 * @brief Set Advertisement Data 7779 * @param advertising_data_length 7780 * @param advertising_data (max 31 octets) 7781 * @note data is not copied, pointer has to stay valid 7782 */ 7783 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7784 hci_stack->le_advertisements_data_len = advertising_data_length; 7785 hci_stack->le_advertisements_data = advertising_data; 7786 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7787 hci_run(); 7788 } 7789 7790 /** 7791 * @brief Set Scan Response Data 7792 * @param advertising_data_length 7793 * @param advertising_data (max 31 octets) 7794 * @note data is not copied, pointer has to stay valid 7795 */ 7796 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7797 hci_stack->le_scan_response_data_len = scan_response_data_length; 7798 hci_stack->le_scan_response_data = scan_response_data; 7799 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7800 hci_run(); 7801 } 7802 7803 /** 7804 * @brief Set Advertisement Parameters 7805 * @param adv_int_min 7806 * @param adv_int_max 7807 * @param adv_type 7808 * @param direct_address_type 7809 * @param direct_address 7810 * @param channel_map 7811 * @param filter_policy 7812 * 7813 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7814 */ 7815 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7816 uint8_t direct_address_typ, bd_addr_t direct_address, 7817 uint8_t channel_map, uint8_t filter_policy) { 7818 7819 hci_stack->le_advertisements_interval_min = adv_int_min; 7820 hci_stack->le_advertisements_interval_max = adv_int_max; 7821 hci_stack->le_advertisements_type = adv_type; 7822 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7823 hci_stack->le_advertisements_channel_map = channel_map; 7824 hci_stack->le_advertisements_filter_policy = filter_policy; 7825 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7826 6); 7827 7828 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7829 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7830 hci_run(); 7831 } 7832 7833 /** 7834 * @brief Enable/Disable Advertisements 7835 * @param enabled 7836 */ 7837 void gap_advertisements_enable(int enabled){ 7838 if (enabled == 0){ 7839 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7840 } else { 7841 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7842 } 7843 hci_update_advertisements_enabled_for_current_roles(); 7844 hci_run(); 7845 } 7846 7847 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7848 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7849 btstack_linked_list_iterator_t it; 7850 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7851 while (btstack_linked_list_iterator_has_next(&it)){ 7852 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7853 if ( item->advertising_handle == advertising_handle ) { 7854 return item; 7855 } 7856 } 7857 return NULL; 7858 } 7859 7860 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7861 // find free advertisement handle 7862 uint8_t advertisement_handle; 7863 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7864 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7865 } 7866 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7867 // clear 7868 memset(storage, 0, sizeof(le_advertising_set_t)); 7869 // copy params 7870 storage->advertising_handle = advertisement_handle; 7871 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7872 // add to list 7873 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7874 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7875 *out_advertising_handle = advertisement_handle; 7876 // set tasks and start 7877 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7878 hci_run(); 7879 return ERROR_CODE_SUCCESS; 7880 } 7881 7882 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7883 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7884 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7885 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7886 // set tasks and start 7887 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7888 hci_run(); 7889 return ERROR_CODE_SUCCESS; 7890 } 7891 7892 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7893 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7894 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7895 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7896 return ERROR_CODE_SUCCESS; 7897 } 7898 7899 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7900 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7901 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7902 memcpy(advertising_set->random_address, random_address, 6); 7903 // set tasks and start 7904 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7905 hci_run(); 7906 return ERROR_CODE_SUCCESS; 7907 } 7908 7909 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7910 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7911 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7912 advertising_set->adv_data = advertising_data; 7913 advertising_set->adv_data_len = advertising_data_length; 7914 // set tasks and start 7915 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7916 hci_run(); 7917 return ERROR_CODE_SUCCESS; 7918 } 7919 7920 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){ 7921 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7922 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7923 advertising_set->scan_data = scan_response_data; 7924 advertising_set->scan_data_len = scan_response_data_length; 7925 // set tasks and start 7926 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7927 hci_run(); 7928 return ERROR_CODE_SUCCESS; 7929 } 7930 7931 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7932 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7933 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7934 advertising_set->enable_timeout = timeout; 7935 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7936 // set tasks and start 7937 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7938 hci_run(); 7939 return ERROR_CODE_SUCCESS; 7940 } 7941 7942 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7943 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7944 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7945 // set tasks and start 7946 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7947 hci_run(); 7948 return ERROR_CODE_SUCCESS; 7949 } 7950 7951 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7952 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7953 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7954 // set tasks and start 7955 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7956 hci_run(); 7957 return ERROR_CODE_SUCCESS; 7958 } 7959 7960 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7961 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7962 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7963 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7964 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7965 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7966 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7967 // set tasks and start 7968 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7969 hci_run(); 7970 return ERROR_CODE_SUCCESS; 7971 } 7972 7973 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7974 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7975 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7976 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7977 return ERROR_CODE_SUCCESS; 7978 } 7979 7980 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7981 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7982 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7983 advertising_set->periodic_data = periodic_data; 7984 advertising_set->periodic_data_len = periodic_data_length; 7985 // set tasks and start 7986 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7987 hci_run(); 7988 return ERROR_CODE_SUCCESS; 7989 } 7990 7991 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7992 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7993 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7994 // set tasks and start 7995 advertising_set->periodic_include_adi = include_adi; 7996 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7997 hci_run(); 7998 return ERROR_CODE_SUCCESS; 7999 } 8000 8001 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8002 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8003 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8004 // set tasks and start 8005 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8006 hci_run(); 8007 return ERROR_CODE_SUCCESS; 8008 } 8009 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8010 8011 #endif 8012 8013 #endif 8014 8015 void hci_le_set_own_address_type(uint8_t own_address_type){ 8016 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8017 if (own_address_type == hci_stack->le_own_addr_type) return; 8018 hci_stack->le_own_addr_type = own_address_type; 8019 8020 #ifdef ENABLE_LE_PERIPHERAL 8021 // update advertisement parameters, too 8022 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8023 hci_run(); 8024 #endif 8025 #ifdef ENABLE_LE_CENTRAL 8026 // note: we don't update scan parameters or modify ongoing connection attempts 8027 #endif 8028 } 8029 8030 void hci_le_random_address_set(const bd_addr_t random_address){ 8031 memcpy(hci_stack->le_random_address, random_address, 6); 8032 hci_stack->le_random_address_set = true; 8033 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8034 hci_run(); 8035 } 8036 8037 #endif 8038 8039 uint8_t gap_disconnect(hci_con_handle_t handle){ 8040 hci_connection_t * conn = hci_connection_for_handle(handle); 8041 if (!conn){ 8042 hci_emit_disconnection_complete(handle, 0); 8043 return 0; 8044 } 8045 // ignore if already disconnected 8046 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8047 return 0; 8048 } 8049 conn->state = SEND_DISCONNECT; 8050 hci_run(); 8051 return 0; 8052 } 8053 8054 int gap_read_rssi(hci_con_handle_t con_handle){ 8055 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8056 if (hci_connection == NULL) return 0; 8057 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8058 hci_run(); 8059 return 1; 8060 } 8061 8062 /** 8063 * @brief Get connection type 8064 * @param con_handle 8065 * @result connection_type 8066 */ 8067 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8068 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8069 if (!conn) return GAP_CONNECTION_INVALID; 8070 switch (conn->address_type){ 8071 case BD_ADDR_TYPE_LE_PUBLIC: 8072 case BD_ADDR_TYPE_LE_RANDOM: 8073 return GAP_CONNECTION_LE; 8074 case BD_ADDR_TYPE_SCO: 8075 return GAP_CONNECTION_SCO; 8076 case BD_ADDR_TYPE_ACL: 8077 return GAP_CONNECTION_ACL; 8078 default: 8079 return GAP_CONNECTION_INVALID; 8080 } 8081 } 8082 8083 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8084 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8085 if (!conn) return HCI_ROLE_INVALID; 8086 return (hci_role_t) conn->role; 8087 } 8088 8089 8090 #ifdef ENABLE_CLASSIC 8091 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8092 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8093 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8094 conn->request_role = role; 8095 hci_run(); 8096 return ERROR_CODE_SUCCESS; 8097 } 8098 #endif 8099 8100 #ifdef ENABLE_BLE 8101 8102 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){ 8103 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8104 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8105 8106 conn->le_phy_update_all_phys = all_phys; 8107 conn->le_phy_update_tx_phys = tx_phys; 8108 conn->le_phy_update_rx_phys = rx_phys; 8109 conn->le_phy_update_phy_options = phy_options; 8110 8111 hci_run(); 8112 8113 return 0; 8114 } 8115 8116 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8117 // check if already in list 8118 btstack_linked_list_iterator_t it; 8119 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8120 while (btstack_linked_list_iterator_has_next(&it)) { 8121 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8122 if (entry->address_type != address_type) { 8123 continue; 8124 } 8125 if (memcmp(entry->address, address, 6) != 0) { 8126 continue; 8127 } 8128 // disallow if already scheduled to add 8129 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8130 return ERROR_CODE_COMMAND_DISALLOWED; 8131 } 8132 // still on controller, but scheduled to remove -> re-add 8133 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8134 return ERROR_CODE_SUCCESS; 8135 } 8136 // alloc and add to list 8137 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8138 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8139 entry->address_type = address_type; 8140 (void)memcpy(entry->address, address, 6); 8141 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8142 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8143 return ERROR_CODE_SUCCESS; 8144 } 8145 8146 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8147 btstack_linked_list_iterator_t it; 8148 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8149 while (btstack_linked_list_iterator_has_next(&it)){ 8150 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8151 if (entry->address_type != address_type) { 8152 continue; 8153 } 8154 if (memcmp(entry->address, address, 6) != 0) { 8155 continue; 8156 } 8157 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8158 // remove from controller if already present 8159 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8160 } else { 8161 // directly remove entry from whitelist 8162 btstack_linked_list_iterator_remove(&it); 8163 btstack_memory_whitelist_entry_free(entry); 8164 } 8165 return ERROR_CODE_SUCCESS; 8166 } 8167 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8168 } 8169 8170 static void hci_whitelist_clear(void){ 8171 btstack_linked_list_iterator_t it; 8172 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8173 while (btstack_linked_list_iterator_has_next(&it)){ 8174 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8175 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8176 // remove from controller if already present 8177 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8178 continue; 8179 } 8180 // directly remove entry from whitelist 8181 btstack_linked_list_iterator_remove(&it); 8182 btstack_memory_whitelist_entry_free(entry); 8183 } 8184 } 8185 8186 // free all entries unconditionally 8187 static void hci_whitelist_free(void){ 8188 btstack_linked_list_iterator_t lit; 8189 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 8190 while (btstack_linked_list_iterator_has_next(&lit)){ 8191 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 8192 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 8193 btstack_memory_whitelist_entry_free(entry); 8194 } 8195 } 8196 8197 /** 8198 * @brief Clear Whitelist 8199 * @return 0 if ok 8200 */ 8201 uint8_t gap_whitelist_clear(void){ 8202 hci_whitelist_clear(); 8203 hci_run(); 8204 return ERROR_CODE_SUCCESS; 8205 } 8206 8207 /** 8208 * @brief Add Device to Whitelist 8209 * @param address_typ 8210 * @param address 8211 * @return 0 if ok 8212 */ 8213 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8214 uint8_t status = hci_whitelist_add(address_type, address); 8215 if (status){ 8216 return status; 8217 } 8218 hci_run(); 8219 return ERROR_CODE_SUCCESS; 8220 } 8221 8222 /** 8223 * @brief Remove Device from Whitelist 8224 * @param address_typ 8225 * @param address 8226 * @return 0 if ok 8227 */ 8228 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8229 uint8_t status = hci_whitelist_remove(address_type, address); 8230 if (status){ 8231 return status; 8232 } 8233 hci_run(); 8234 return ERROR_CODE_SUCCESS; 8235 } 8236 8237 #ifdef ENABLE_LE_CENTRAL 8238 /** 8239 * @brief Connect with Whitelist 8240 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8241 * @return - if ok 8242 */ 8243 uint8_t gap_connect_with_whitelist(void){ 8244 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8245 return ERROR_CODE_COMMAND_DISALLOWED; 8246 } 8247 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8248 hci_run(); 8249 return ERROR_CODE_SUCCESS; 8250 } 8251 8252 /** 8253 * @brief Auto Connection Establishment - Start Connecting to device 8254 * @param address_typ 8255 * @param address 8256 * @return 0 if ok 8257 */ 8258 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8259 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8260 return ERROR_CODE_COMMAND_DISALLOWED; 8261 } 8262 8263 uint8_t status = hci_whitelist_add(address_type, address); 8264 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8265 return status; 8266 } 8267 8268 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8269 8270 hci_run(); 8271 return ERROR_CODE_SUCCESS; 8272 } 8273 8274 /** 8275 * @brief Auto Connection Establishment - Stop Connecting to device 8276 * @param address_typ 8277 * @param address 8278 * @return 0 if ok 8279 */ 8280 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8281 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8282 return ERROR_CODE_COMMAND_DISALLOWED; 8283 } 8284 8285 hci_whitelist_remove(address_type, address); 8286 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8287 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8288 } 8289 hci_run(); 8290 return 0; 8291 } 8292 8293 /** 8294 * @brief Auto Connection Establishment - Stop everything 8295 * @note Convenience function to stop all active auto connection attempts 8296 */ 8297 uint8_t gap_auto_connection_stop_all(void){ 8298 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8299 return ERROR_CODE_COMMAND_DISALLOWED; 8300 } 8301 hci_whitelist_clear(); 8302 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8303 hci_run(); 8304 return ERROR_CODE_SUCCESS; 8305 } 8306 8307 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8308 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8309 if (!conn) return 0; 8310 return conn->le_connection_interval; 8311 } 8312 #endif 8313 #endif 8314 8315 #ifdef ENABLE_CLASSIC 8316 /** 8317 * @brief Set Extended Inquiry Response data 8318 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8319 * @note has to be done before stack starts up 8320 */ 8321 void gap_set_extended_inquiry_response(const uint8_t * data){ 8322 hci_stack->eir_data = data; 8323 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8324 hci_run(); 8325 } 8326 8327 /** 8328 * @brief Start GAP Classic Inquiry 8329 * @param duration in 1.28s units 8330 * @return 0 if ok 8331 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8332 */ 8333 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8334 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8335 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8336 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8337 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8338 } 8339 hci_stack->inquiry_state = duration_in_1280ms_units; 8340 hci_stack->inquiry_max_period_length = 0; 8341 hci_stack->inquiry_min_period_length = 0; 8342 hci_run(); 8343 return 0; 8344 } 8345 8346 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8347 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8348 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8349 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8350 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8351 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8352 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8353 8354 hci_stack->inquiry_state = duration; 8355 hci_stack->inquiry_max_period_length = max_period_length; 8356 hci_stack->inquiry_min_period_length = min_period_length; 8357 hci_run(); 8358 return 0; 8359 } 8360 8361 /** 8362 * @brief Stop GAP Classic Inquiry 8363 * @return 0 if ok 8364 */ 8365 int gap_inquiry_stop(void){ 8366 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8367 // emit inquiry complete event, before it even started 8368 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8369 hci_emit_event(event, sizeof(event), 1); 8370 return 0; 8371 } 8372 switch (hci_stack->inquiry_state){ 8373 case GAP_INQUIRY_STATE_ACTIVE: 8374 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8375 hci_run(); 8376 return ERROR_CODE_SUCCESS; 8377 case GAP_INQUIRY_STATE_PERIODIC: 8378 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8379 hci_run(); 8380 return ERROR_CODE_SUCCESS; 8381 default: 8382 return ERROR_CODE_COMMAND_DISALLOWED; 8383 } 8384 } 8385 8386 void gap_inquiry_set_lap(uint32_t lap){ 8387 hci_stack->inquiry_lap = lap; 8388 } 8389 8390 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8391 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8392 hci_stack->inquiry_scan_window = inquiry_scan_window; 8393 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8394 hci_run(); 8395 } 8396 8397 8398 /** 8399 * @brief Remote Name Request 8400 * @param addr 8401 * @param page_scan_repetition_mode 8402 * @param clock_offset only used when bit 15 is set 8403 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8404 */ 8405 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8406 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8407 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8408 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8409 hci_stack->remote_name_clock_offset = clock_offset; 8410 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8411 hci_run(); 8412 return 0; 8413 } 8414 8415 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8416 hci_stack->gap_pairing_state = state; 8417 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8418 hci_run(); 8419 return 0; 8420 } 8421 8422 /** 8423 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8424 * @param addr 8425 * @param pin_data 8426 * @param pin_len 8427 * @return 0 if ok 8428 */ 8429 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8430 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8431 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8432 hci_stack->gap_pairing_pin_len = pin_len; 8433 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8434 } 8435 8436 /** 8437 * @brief Legacy Pairing Pin Code Response 8438 * @param addr 8439 * @param pin 8440 * @return 0 if ok 8441 */ 8442 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8443 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8444 } 8445 8446 /** 8447 * @brief Abort Legacy Pairing 8448 * @param addr 8449 * @param pin 8450 * @return 0 if ok 8451 */ 8452 int gap_pin_code_negative(bd_addr_t addr){ 8453 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8454 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8455 } 8456 8457 /** 8458 * @brief SSP Passkey Response 8459 * @param addr 8460 * @param passkey 8461 * @return 0 if ok 8462 */ 8463 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8464 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8465 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8466 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8467 } 8468 8469 /** 8470 * @brief Abort SSP Passkey Entry/Pairing 8471 * @param addr 8472 * @param pin 8473 * @return 0 if ok 8474 */ 8475 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8476 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8477 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8478 } 8479 8480 /** 8481 * @brief Accept SSP Numeric Comparison 8482 * @param addr 8483 * @param passkey 8484 * @return 0 if ok 8485 */ 8486 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8487 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8488 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8489 } 8490 8491 /** 8492 * @brief Abort SSP Numeric Comparison/Pairing 8493 * @param addr 8494 * @param pin 8495 * @return 0 if ok 8496 */ 8497 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8498 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8499 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8500 } 8501 8502 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8503 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8504 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8505 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8506 connectionSetAuthenticationFlags(conn, flag); 8507 hci_run(); 8508 return ERROR_CODE_SUCCESS; 8509 } 8510 #endif 8511 8512 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8513 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8514 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8515 } 8516 8517 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8518 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8519 } 8520 #endif 8521 8522 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8523 /** 8524 * @brief Report Remote OOB Data 8525 * @param bd_addr 8526 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8527 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8528 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8529 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8530 */ 8531 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){ 8532 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8533 if (connection == NULL) { 8534 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8535 } 8536 connection->classic_oob_c_192 = c_192; 8537 connection->classic_oob_r_192 = r_192; 8538 8539 // ignore P-256 if not supported by us 8540 if (hci_stack->secure_connections_active){ 8541 connection->classic_oob_c_256 = c_256; 8542 connection->classic_oob_r_256 = r_256; 8543 } 8544 8545 return ERROR_CODE_SUCCESS; 8546 } 8547 /** 8548 * @brief Generate new OOB data 8549 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8550 */ 8551 void gap_ssp_generate_oob_data(void){ 8552 hci_stack->classic_read_local_oob_data = true; 8553 hci_run(); 8554 } 8555 8556 #endif 8557 8558 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8559 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8560 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8561 if (connection == NULL) { 8562 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8563 } 8564 8565 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8566 connection->link_key_type = type; 8567 8568 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8569 } 8570 8571 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8572 /** 8573 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8574 * @param inquiry_mode see bluetooth_defines.h 8575 */ 8576 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8577 hci_stack->inquiry_mode = inquiry_mode; 8578 } 8579 8580 /** 8581 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8582 */ 8583 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8584 hci_stack->sco_voice_setting = voice_setting; 8585 } 8586 8587 /** 8588 * @brief Get SCO Voice Setting 8589 * @return current voice setting 8590 */ 8591 uint16_t hci_get_sco_voice_setting(void){ 8592 return hci_stack->sco_voice_setting; 8593 } 8594 8595 static int hci_have_usb_transport(void){ 8596 if (!hci_stack->hci_transport) return 0; 8597 const char * transport_name = hci_stack->hci_transport->name; 8598 if (!transport_name) return 0; 8599 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8600 } 8601 8602 /** @brief Get SCO packet length for current SCO Voice setting 8603 * @note Using SCO packets of the exact length is required for USB transfer 8604 * @return Length of SCO packets in bytes (not audio frames) 8605 */ 8606 uint16_t hci_get_sco_packet_length(void){ 8607 uint16_t sco_packet_length = 0; 8608 8609 #ifdef ENABLE_SCO_OVER_HCI 8610 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8611 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8612 8613 if (hci_have_usb_transport()){ 8614 // see Core Spec for H2 USB Transfer. 8615 // 3 byte SCO header + 24 bytes per connection 8616 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8617 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8618 } else { 8619 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8620 sco_packet_length = 3 + 60 * multiplier; 8621 // assert that it still fits inside an SCO buffer 8622 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8623 sco_packet_length = 3 + 60; 8624 } 8625 } 8626 #endif 8627 8628 #ifdef HAVE_SCO_TRANSPORT 8629 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8630 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8631 sco_packet_length = 3 + 60 * multiplier; 8632 #endif 8633 return sco_packet_length; 8634 } 8635 8636 /** 8637 * @brief Sets the master/slave policy 8638 * @param policy (0: attempt to become master, 1: let connecting device decide) 8639 */ 8640 void hci_set_master_slave_policy(uint8_t policy){ 8641 hci_stack->master_slave_policy = policy; 8642 } 8643 8644 #endif 8645 8646 HCI_STATE hci_get_state(void){ 8647 return hci_stack->state; 8648 } 8649 8650 #ifdef ENABLE_CLASSIC 8651 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8652 hci_stack->gap_classic_accept_callback = accept_callback; 8653 } 8654 #endif 8655 8656 /** 8657 * @brief Set callback for Bluetooth Hardware Error 8658 */ 8659 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8660 hci_stack->hardware_error_callback = fn; 8661 } 8662 8663 void hci_disconnect_all(void){ 8664 btstack_linked_list_iterator_t it; 8665 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8666 while (btstack_linked_list_iterator_has_next(&it)){ 8667 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8668 if (con->state == SENT_DISCONNECT) continue; 8669 con->state = SEND_DISCONNECT; 8670 } 8671 hci_run(); 8672 } 8673 8674 uint16_t hci_get_manufacturer(void){ 8675 return hci_stack->manufacturer; 8676 } 8677 8678 #ifdef ENABLE_BLE 8679 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8680 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8681 if (!hci_con) return NULL; 8682 return &hci_con->sm_connection; 8683 } 8684 8685 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8686 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8687 #endif 8688 8689 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8690 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8691 if (hci_connection == NULL) return 0; 8692 if (hci_is_le_connection(hci_connection)){ 8693 #ifdef ENABLE_BLE 8694 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8695 if (sm_conn->sm_connection_encrypted) { 8696 return sm_conn->sm_actual_encryption_key_size; 8697 } 8698 #endif 8699 } else { 8700 #ifdef ENABLE_CLASSIC 8701 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8702 return hci_connection->encryption_key_size; 8703 } 8704 #endif 8705 } 8706 return 0; 8707 } 8708 8709 bool gap_authenticated(hci_con_handle_t con_handle){ 8710 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8711 if (hci_connection == NULL) return false; 8712 8713 switch (hci_connection->address_type){ 8714 #ifdef ENABLE_BLE 8715 case BD_ADDR_TYPE_LE_PUBLIC: 8716 case BD_ADDR_TYPE_LE_RANDOM: 8717 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8718 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8719 #endif 8720 #ifdef ENABLE_CLASSIC 8721 case BD_ADDR_TYPE_SCO: 8722 case BD_ADDR_TYPE_ACL: 8723 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8724 #endif 8725 default: 8726 return false; 8727 } 8728 } 8729 8730 bool gap_secure_connection(hci_con_handle_t con_handle){ 8731 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8732 if (hci_connection == NULL) return 0; 8733 8734 switch (hci_connection->address_type){ 8735 #ifdef ENABLE_BLE 8736 case BD_ADDR_TYPE_LE_PUBLIC: 8737 case BD_ADDR_TYPE_LE_RANDOM: 8738 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8739 return hci_connection->sm_connection.sm_connection_sc != 0; 8740 #endif 8741 #ifdef ENABLE_CLASSIC 8742 case BD_ADDR_TYPE_SCO: 8743 case BD_ADDR_TYPE_ACL: 8744 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8745 #endif 8746 default: 8747 return false; 8748 } 8749 } 8750 8751 bool gap_bonded(hci_con_handle_t con_handle){ 8752 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8753 if (hci_connection == NULL) return 0; 8754 8755 #ifdef ENABLE_CLASSIC 8756 link_key_t link_key; 8757 link_key_type_t link_key_type; 8758 #endif 8759 switch (hci_connection->address_type){ 8760 #ifdef ENABLE_BLE 8761 case BD_ADDR_TYPE_LE_PUBLIC: 8762 case BD_ADDR_TYPE_LE_RANDOM: 8763 return hci_connection->sm_connection.sm_le_db_index >= 0; 8764 #endif 8765 #ifdef ENABLE_CLASSIC 8766 case BD_ADDR_TYPE_SCO: 8767 case BD_ADDR_TYPE_ACL: 8768 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8769 #endif 8770 default: 8771 return false; 8772 } 8773 } 8774 8775 #ifdef ENABLE_BLE 8776 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8777 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8778 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8779 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8780 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8781 return sm_conn->sm_connection_authorization_state; 8782 } 8783 #endif 8784 8785 #ifdef ENABLE_CLASSIC 8786 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){ 8787 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8788 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8789 conn->sniff_min_interval = sniff_min_interval; 8790 conn->sniff_max_interval = sniff_max_interval; 8791 conn->sniff_attempt = sniff_attempt; 8792 conn->sniff_timeout = sniff_timeout; 8793 hci_run(); 8794 return 0; 8795 } 8796 8797 /** 8798 * @brief Exit Sniff mode 8799 * @param con_handle 8800 @ @return 0 if ok 8801 */ 8802 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8803 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8804 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8805 conn->sniff_min_interval = 0xffff; 8806 hci_run(); 8807 return 0; 8808 } 8809 8810 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){ 8811 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8812 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8813 conn->sniff_subrating_max_latency = max_latency; 8814 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8815 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8816 hci_run(); 8817 return ERROR_CODE_SUCCESS; 8818 } 8819 8820 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){ 8821 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8822 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8823 conn->qos_service_type = service_type; 8824 conn->qos_token_rate = token_rate; 8825 conn->qos_peak_bandwidth = peak_bandwidth; 8826 conn->qos_latency = latency; 8827 conn->qos_delay_variation = delay_variation; 8828 hci_run(); 8829 return ERROR_CODE_SUCCESS; 8830 } 8831 8832 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8833 hci_stack->new_page_scan_interval = page_scan_interval; 8834 hci_stack->new_page_scan_window = page_scan_window; 8835 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8836 hci_run(); 8837 } 8838 8839 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8840 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8841 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8842 hci_run(); 8843 } 8844 8845 void gap_set_page_timeout(uint16_t page_timeout){ 8846 hci_stack->page_timeout = page_timeout; 8847 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8848 hci_run(); 8849 } 8850 8851 #endif 8852 8853 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8854 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8855 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8856 if (le_device_db_index >= le_device_db_max_count()) return; 8857 uint8_t offset = le_device_db_index >> 3; 8858 uint8_t mask = 1 << (le_device_db_index & 7); 8859 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8860 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8861 // note: go back to remove entries, otherwise, a remove + add will skip the add 8862 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8863 } 8864 } 8865 8866 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8867 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8868 if (le_device_db_index >= le_device_db_max_count()) return; 8869 uint8_t offset = le_device_db_index >> 3; 8870 uint8_t mask = 1 << (le_device_db_index & 7); 8871 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8872 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8873 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8874 } 8875 } 8876 8877 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8878 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8879 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8880 } 8881 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8882 // restart le resolving list update 8883 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8884 } 8885 return ERROR_CODE_SUCCESS; 8886 } 8887 #endif 8888 8889 #ifdef ENABLE_BLE 8890 #ifdef ENABLE_LE_CENTRAL 8891 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8892 8893 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8894 // check if already in list 8895 btstack_linked_list_iterator_t it; 8896 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8897 while (btstack_linked_list_iterator_has_next(&it)) { 8898 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8899 if (entry->sid != advertising_sid) { 8900 continue; 8901 } 8902 if (entry->address_type != address_type) { 8903 continue; 8904 } 8905 if (memcmp(entry->address, address, 6) != 0) { 8906 continue; 8907 } 8908 // disallow if already scheduled to add 8909 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8910 return ERROR_CODE_COMMAND_DISALLOWED; 8911 } 8912 // still on controller, but scheduled to remove -> re-add 8913 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8914 return ERROR_CODE_SUCCESS; 8915 } 8916 // alloc and add to list 8917 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8918 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8919 entry->sid = advertising_sid; 8920 entry->address_type = address_type; 8921 (void)memcpy(entry->address, address, 6); 8922 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8923 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8924 return ERROR_CODE_SUCCESS; 8925 } 8926 8927 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8928 btstack_linked_list_iterator_t it; 8929 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8930 while (btstack_linked_list_iterator_has_next(&it)){ 8931 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8932 if (entry->sid != advertising_sid) { 8933 continue; 8934 } 8935 if (entry->address_type != address_type) { 8936 continue; 8937 } 8938 if (memcmp(entry->address, address, 6) != 0) { 8939 continue; 8940 } 8941 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8942 // remove from controller if already present 8943 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8944 } else { 8945 // directly remove entry from whitelist 8946 btstack_linked_list_iterator_remove(&it); 8947 btstack_memory_periodic_advertiser_list_entry_free(entry); 8948 } 8949 return ERROR_CODE_SUCCESS; 8950 } 8951 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8952 } 8953 8954 static void hci_periodic_advertiser_list_clear(void){ 8955 btstack_linked_list_iterator_t it; 8956 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8957 while (btstack_linked_list_iterator_has_next(&it)){ 8958 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8959 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8960 // remove from controller if already present 8961 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8962 continue; 8963 } 8964 // directly remove entry from whitelist 8965 btstack_linked_list_iterator_remove(&it); 8966 btstack_memory_periodic_advertiser_list_entry_free(entry); 8967 } 8968 } 8969 8970 // free all entries unconditionally 8971 static void hci_periodic_advertiser_list_free(void){ 8972 btstack_linked_list_iterator_t lit; 8973 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8974 while (btstack_linked_list_iterator_has_next(&lit)){ 8975 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8976 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8977 btstack_memory_periodic_advertiser_list_entry_free(entry); 8978 } 8979 } 8980 8981 uint8_t gap_periodic_advertiser_list_clear(void){ 8982 hci_periodic_advertiser_list_clear(); 8983 hci_run(); 8984 return ERROR_CODE_SUCCESS; 8985 } 8986 8987 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8988 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8989 if (status){ 8990 return status; 8991 } 8992 hci_run(); 8993 return ERROR_CODE_SUCCESS; 8994 } 8995 8996 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8997 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8998 if (status){ 8999 return status; 9000 } 9001 hci_run(); 9002 return ERROR_CODE_SUCCESS; 9003 } 9004 9005 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9006 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9007 // abort if already active 9008 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9009 return ERROR_CODE_COMMAND_DISALLOWED; 9010 } 9011 // store request 9012 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9013 hci_stack->le_periodic_sync_options = options; 9014 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9015 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9016 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9017 hci_stack->le_periodic_sync_skip = skip; 9018 hci_stack->le_periodic_sync_timeout = sync_timeout; 9019 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9020 9021 hci_run(); 9022 return ERROR_CODE_SUCCESS; 9023 } 9024 9025 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9026 // abort if not requested 9027 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9028 return ERROR_CODE_COMMAND_DISALLOWED; 9029 } 9030 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9031 hci_run(); 9032 return ERROR_CODE_SUCCESS; 9033 } 9034 9035 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9036 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9037 return ERROR_CODE_COMMAND_DISALLOWED; 9038 } 9039 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9040 hci_run(); 9041 return ERROR_CODE_SUCCESS; 9042 } 9043 9044 #endif 9045 #endif 9046 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9047 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id) { 9048 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9049 if (iso_stream == NULL){ 9050 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9051 } else { 9052 iso_stream->iso_type = iso_type; 9053 iso_stream->state = HCI_ISO_STREAM_STATE_REQUESTED; 9054 iso_stream->con_handle = con_handle; 9055 iso_stream->group_id = group_id; 9056 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9057 return ERROR_CODE_SUCCESS; 9058 } 9059 } 9060 9061 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9062 btstack_linked_list_iterator_t it; 9063 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9064 while (btstack_linked_list_iterator_has_next(&it)){ 9065 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9066 if (iso_stream->con_handle == con_handle ) { 9067 return iso_stream; 9068 } 9069 } 9070 return NULL; 9071 } 9072 9073 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9074 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->con_handle, iso_stream->group_id); 9075 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9076 btstack_memory_hci_iso_stream_free(iso_stream); 9077 } 9078 9079 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9080 btstack_linked_list_iterator_t it; 9081 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9082 while (btstack_linked_list_iterator_has_next(&it)){ 9083 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9084 if ((iso_stream->group_id == group_id) && 9085 (iso_stream->iso_type == iso_type)){ 9086 btstack_linked_list_iterator_remove(&it); 9087 btstack_memory_hci_iso_stream_free(iso_stream); 9088 } 9089 } 9090 } 9091 9092 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9093 btstack_linked_list_iterator_t it; 9094 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9095 while (btstack_linked_list_iterator_has_next(&it)){ 9096 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9097 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9098 (iso_stream->group_id == group_id)){ 9099 btstack_linked_list_iterator_remove(&it); 9100 btstack_memory_hci_iso_stream_free(iso_stream); 9101 } 9102 } 9103 } 9104 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9105 btstack_linked_list_iterator_t it; 9106 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9107 while (btstack_linked_list_iterator_has_next(&it)){ 9108 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9109 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9110 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9111 } 9112 } 9113 } 9114 9115 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9116 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9117 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9118 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9119 return (sdu_len_offset + 2 + sdu_len) == size; 9120 } 9121 9122 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9123 if (hci_stack->iso_packet_handler == NULL) { 9124 return; 9125 } 9126 if (size < 4) { 9127 return; 9128 } 9129 9130 // parse header 9131 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9132 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9133 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9134 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9135 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9136 9137 // assert packet is complete 9138 if ((iso_data_len + 4u) != size){ 9139 return; 9140 } 9141 9142 if ((pb_flag & 0x01) == 0){ 9143 if (pb_flag == 0x02){ 9144 // The ISO_Data_Load field contains a header and a complete SDU. 9145 if (hci_iso_sdu_complete(packet, size)) { 9146 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9147 } 9148 } else { 9149 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9150 if (iso_stream == NULL){ 9151 return; 9152 } 9153 if (size > HCI_ISO_PAYLOAD_SIZE){ 9154 return; 9155 } 9156 memcpy(iso_stream->reassembly_buffer, packet, size); 9157 // fix pb_flag 9158 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9159 iso_stream->reassembly_pos = size; 9160 } 9161 } else { 9162 // iso_data_load contains continuation or last fragment of an SDU 9163 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9164 if (ts_flag != 0){ 9165 return; 9166 } 9167 // append fragment 9168 if (iso_stream == NULL){ 9169 return; 9170 } 9171 if (iso_stream->reassembly_pos == 0){ 9172 return; 9173 } 9174 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9175 // reset reassembly buffer 9176 iso_stream->reassembly_pos = 0; 9177 return; 9178 } 9179 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9180 iso_stream->reassembly_pos += iso_data_len; 9181 9182 // deliver if last fragment and SDU complete 9183 if (pb_flag == 0x03){ 9184 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9185 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9186 } 9187 iso_stream->reassembly_pos = 0; 9188 } 9189 } 9190 } 9191 9192 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9193 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9194 uint16_t pos = 0; 9195 event[pos++] = HCI_EVENT_META_GAP; 9196 event[pos++] = 4 + (2 * big->num_bis); 9197 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9198 event[pos++] = status; 9199 event[pos++] = big->big_handle; 9200 event[pos++] = big->num_bis; 9201 uint8_t i; 9202 for (i=0;i<big->num_bis;i++){ 9203 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9204 pos += 2; 9205 } 9206 hci_emit_event(event, pos, 0); 9207 } 9208 9209 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9210 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9211 uint16_t pos = 0; 9212 event[pos++] = HCI_EVENT_META_GAP; 9213 event[pos++] = 4 + (2 * cig->num_cis); 9214 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9215 event[pos++] = status; 9216 event[pos++] = cig->cig_id; 9217 event[pos++] = cig->num_cis; 9218 uint8_t i; 9219 for (i=0;i<cig->num_cis;i++){ 9220 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9221 pos += 2; 9222 } 9223 hci_emit_event(event, pos, 0); 9224 } 9225 9226 static void 9227 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status) { 9228 uint8_t event [7]; 9229 uint16_t pos = 0; 9230 event[pos++] = HCI_EVENT_META_GAP; 9231 event[pos++] = 5; 9232 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9233 event[pos++] = status; 9234 event[pos++] = cig_id; 9235 little_endian_store_16(event, pos, cis_con_handle); 9236 pos += 2; 9237 hci_emit_event(event, pos, 0); 9238 } 9239 9240 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9241 uint8_t event [4]; 9242 uint16_t pos = 0; 9243 event[pos++] = HCI_EVENT_META_GAP; 9244 event[pos++] = 2; 9245 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9246 event[pos++] = big->big_handle; 9247 hci_emit_event(event, pos, 0); 9248 } 9249 9250 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9251 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9252 uint16_t pos = 0; 9253 event[pos++] = HCI_EVENT_META_GAP; 9254 event[pos++] = 4; 9255 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9256 event[pos++] = status; 9257 event[pos++] = big_sync->big_handle; 9258 event[pos++] = big_sync->num_bis; 9259 uint8_t i; 9260 for (i=0;i<big_sync->num_bis;i++){ 9261 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9262 pos += 2; 9263 } 9264 hci_emit_event(event, pos, 0); 9265 } 9266 9267 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9268 uint8_t event [4]; 9269 uint16_t pos = 0; 9270 event[pos++] = HCI_EVENT_META_GAP; 9271 event[pos++] = 2; 9272 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9273 event[pos++] = big_handle; 9274 hci_emit_event(event, pos, 0); 9275 } 9276 9277 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9278 uint8_t event[6]; 9279 uint16_t pos = 0; 9280 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9281 event[pos++] = sizeof(event) - 2; 9282 event[pos++] = big->big_handle; 9283 event[pos++] = bis_index; 9284 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9285 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9286 } 9287 9288 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9289 btstack_linked_list_iterator_t it; 9290 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9291 while (btstack_linked_list_iterator_has_next(&it)){ 9292 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9293 if ( big->big_handle == big_handle ) { 9294 return big; 9295 } 9296 } 9297 return NULL; 9298 } 9299 9300 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9301 btstack_linked_list_iterator_t it; 9302 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9303 while (btstack_linked_list_iterator_has_next(&it)){ 9304 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9305 if ( big_sync->big_handle == big_handle ) { 9306 return big_sync; 9307 } 9308 } 9309 return NULL; 9310 } 9311 9312 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9313 hci_stack->iso_packets_to_queue = num_packets; 9314 } 9315 9316 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9317 btstack_linked_list_iterator_t it; 9318 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9319 while (btstack_linked_list_iterator_has_next(&it)){ 9320 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9321 if ( cig->cig_id == cig_id ) { 9322 return cig; 9323 } 9324 } 9325 return NULL; 9326 } 9327 9328 static void hci_iso_notify_can_send_now(void){ 9329 btstack_linked_list_iterator_t it; 9330 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9331 while (btstack_linked_list_iterator_has_next(&it)){ 9332 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9333 // track number completed packet timestamps 9334 if (big->num_completed_timestamp_current_valid){ 9335 big->num_completed_timestamp_current_valid = false; 9336 if (big->num_completed_timestamp_previous_valid){ 9337 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9338 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9339 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9340 big->num_completed_timestamp_previous_ms); 9341 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9342 // to catch up, skip packet on all BIS 9343 uint8_t i; 9344 for (i=0;i<big->num_bis;i++){ 9345 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9346 if (iso_stream){ 9347 iso_stream->num_packets_to_skip++; 9348 } 9349 } 9350 } 9351 } 9352 big->num_completed_timestamp_previous_valid = true; 9353 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9354 } 9355 9356 if (big->can_send_now_requested){ 9357 // check if no outgoing iso packets pending and no can send now have to be emitted 9358 uint8_t i; 9359 bool can_send = true; 9360 uint8_t num_iso_queued_minimum = 0; 9361 for (i=0;i<big->num_bis;i++){ 9362 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9363 if (iso_stream == NULL) continue; 9364 // handle case where individual ISO packet was sent too late: 9365 // for each additionally queued packet, a new one needs to get skipped 9366 if (i==0){ 9367 num_iso_queued_minimum = iso_stream->num_packets_sent; 9368 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9369 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9370 iso_stream->num_packets_to_skip += num_packets_to_skip; 9371 iso_stream->num_packets_sent -= num_packets_to_skip; 9372 } 9373 // check if we can send now 9374 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9375 can_send = false; 9376 break; 9377 } 9378 } 9379 if (can_send){ 9380 // propagate can send now to individual streams 9381 big->can_send_now_requested = false; 9382 for (i=0;i<big->num_bis;i++){ 9383 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9384 iso_stream->emit_ready_to_send = true; 9385 } 9386 } 9387 } 9388 } 9389 9390 if (hci_stack->hci_packet_buffer_reserved) return; 9391 9392 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9393 while (btstack_linked_list_iterator_has_next(&it)){ 9394 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9395 // report bis ready 9396 uint8_t i; 9397 for (i=0;i<big->num_bis;i++){ 9398 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9399 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9400 iso_stream->emit_ready_to_send = false; 9401 hci_emit_bis_can_send_now(big, i); 9402 break; 9403 } 9404 } 9405 } 9406 } 9407 9408 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9409 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9410 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9411 } 9412 if (big_params->num_bis == 0){ 9413 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9414 } 9415 if (big_params->num_bis > MAX_NR_BIS){ 9416 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9417 } 9418 9419 // reserve ISO Streams 9420 uint8_t i; 9421 uint8_t status = ERROR_CODE_SUCCESS; 9422 for (i=0;i<big_params->num_bis;i++){ 9423 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_CON_HANDLE_INVALID, big_params->big_handle); 9424 if (status != ERROR_CODE_SUCCESS) { 9425 break; 9426 } 9427 } 9428 9429 // free structs on error 9430 if (status != ERROR_CODE_SUCCESS){ 9431 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9432 return status; 9433 } 9434 9435 le_audio_big_t * big = storage; 9436 big->big_handle = big_params->big_handle; 9437 big->params = big_params; 9438 big->state = LE_AUDIO_BIG_STATE_CREATE; 9439 big->num_bis = big_params->num_bis; 9440 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9441 9442 hci_run(); 9443 9444 return ERROR_CODE_SUCCESS; 9445 } 9446 9447 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9448 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9449 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9450 } 9451 if (big_sync_params->num_bis == 0){ 9452 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9453 } 9454 if (big_sync_params->num_bis > MAX_NR_BIS){ 9455 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9456 } 9457 9458 le_audio_big_sync_t * big_sync = storage; 9459 big_sync->big_handle = big_sync_params->big_handle; 9460 big_sync->params = big_sync_params; 9461 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9462 big_sync->num_bis = big_sync_params->num_bis; 9463 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9464 9465 hci_run(); 9466 9467 return ERROR_CODE_SUCCESS; 9468 } 9469 9470 uint8_t gap_big_terminate(uint8_t big_handle){ 9471 le_audio_big_t * big = hci_big_for_handle(big_handle); 9472 if (big == NULL){ 9473 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9474 } 9475 switch (big->state){ 9476 case LE_AUDIO_BIG_STATE_CREATE: 9477 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9478 hci_emit_big_terminated(big); 9479 break; 9480 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9481 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9482 break; 9483 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9484 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9485 case LE_AUDIO_BIG_STATE_ACTIVE: 9486 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9487 hci_run(); 9488 break; 9489 default: 9490 return ERROR_CODE_COMMAND_DISALLOWED; 9491 } 9492 return ERROR_CODE_SUCCESS; 9493 } 9494 9495 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9496 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9497 if (big_sync == NULL){ 9498 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9499 } 9500 switch (big_sync->state){ 9501 case LE_AUDIO_BIG_STATE_CREATE: 9502 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9503 hci_emit_big_sync_stopped(big_handle); 9504 break; 9505 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9506 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9507 break; 9508 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9509 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9510 case LE_AUDIO_BIG_STATE_ACTIVE: 9511 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9512 hci_run(); 9513 break; 9514 default: 9515 return ERROR_CODE_COMMAND_DISALLOWED; 9516 } 9517 return ERROR_CODE_SUCCESS; 9518 } 9519 9520 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9521 le_audio_big_t * big = hci_big_for_handle(big_handle); 9522 if (big == NULL){ 9523 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9524 } 9525 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9526 return ERROR_CODE_COMMAND_DISALLOWED; 9527 } 9528 big->can_send_now_requested = true; 9529 hci_iso_notify_can_send_now(); 9530 return ERROR_CODE_SUCCESS; 9531 } 9532 9533 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9534 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9535 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9536 } 9537 if (cig_params->num_cis == 0){ 9538 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9539 } 9540 if (cig_params->num_cis > MAX_NR_BIS){ 9541 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9542 } 9543 9544 // reserve ISO Streams 9545 uint8_t i; 9546 uint8_t status = ERROR_CODE_SUCCESS; 9547 for (i=0;i<cig_params->num_cis;i++){ 9548 status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_CON_HANDLE_INVALID, cig_params->cig_id); 9549 if (status != ERROR_CODE_SUCCESS) { 9550 break; 9551 } 9552 } 9553 9554 // free structs on error 9555 if (status != ERROR_CODE_SUCCESS){ 9556 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 9557 return status; 9558 } 9559 9560 le_audio_cig_t * cig = storage; 9561 cig->cig_id = cig_params->cig_id; 9562 cig->num_cis = cig_params->num_cis; 9563 cig->params = cig_params; 9564 cig->state = LE_AUDIO_CIG_STATE_CREATE; 9565 for (i=0;i<cig->num_cis;i++){ 9566 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 9567 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 9568 } 9569 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 9570 9571 hci_run(); 9572 9573 return ERROR_CODE_SUCCESS; 9574 } 9575 9576 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 9577 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 9578 if (cig == NULL){ 9579 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9580 } 9581 9582 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 9583 return ERROR_CODE_COMMAND_DISALLOWED; 9584 } 9585 9586 // store ACL Connection Handles 9587 uint8_t i; 9588 for (i=0;i<cig->num_cis;i++){ 9589 // check that all con handles exit 9590 hci_con_handle_t cis_handle = cis_con_handles[i]; 9591 uint8_t j; 9592 bool found = false; 9593 for (j=0;j<cig->num_cis;j++){ 9594 if (cig->cis_con_handles[j] == cis_handle){ 9595 cig->acl_con_handles[j] = acl_con_handles[j]; 9596 found = true; 9597 break; 9598 } 9599 } 9600 if (!found){ 9601 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9602 } 9603 } 9604 9605 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 9606 hci_run(); 9607 9608 return ERROR_CODE_SUCCESS; 9609 } 9610 9611 #endif 9612 #endif /* ENABLE_BLE */ 9613 9614 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9615 void hci_setup_test_connections_fuzz(void){ 9616 hci_connection_t * conn; 9617 9618 // default address: 66:55:44:33:00:01 9619 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9620 9621 // setup Controller info 9622 hci_stack->num_cmd_packets = 255; 9623 hci_stack->acl_packets_total_num = 255; 9624 9625 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9626 addr[5] = 0x01; 9627 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9628 conn->con_handle = addr[5]; 9629 conn->role = HCI_ROLE_SLAVE; 9630 conn->state = RECEIVED_CONNECTION_REQUEST; 9631 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9632 9633 // setup incoming Classic SCO connection with con handle 0x0002 9634 addr[5] = 0x02; 9635 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9636 conn->con_handle = addr[5]; 9637 conn->role = HCI_ROLE_SLAVE; 9638 conn->state = RECEIVED_CONNECTION_REQUEST; 9639 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9640 9641 // setup ready Classic ACL connection with con handle 0x0003 9642 addr[5] = 0x03; 9643 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9644 conn->con_handle = addr[5]; 9645 conn->role = HCI_ROLE_SLAVE; 9646 conn->state = OPEN; 9647 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9648 9649 // setup ready Classic SCO connection with con handle 0x0004 9650 addr[5] = 0x04; 9651 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9652 conn->con_handle = addr[5]; 9653 conn->role = HCI_ROLE_SLAVE; 9654 conn->state = OPEN; 9655 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9656 9657 // setup ready LE ACL connection with con handle 0x005 and public address 9658 addr[5] = 0x05; 9659 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9660 conn->con_handle = addr[5]; 9661 conn->role = HCI_ROLE_SLAVE; 9662 conn->state = OPEN; 9663 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9664 conn->sm_connection.sm_connection_encrypted = 1; 9665 } 9666 9667 void hci_free_connections_fuzz(void){ 9668 btstack_linked_list_iterator_t it; 9669 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9670 while (btstack_linked_list_iterator_has_next(&it)){ 9671 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9672 btstack_linked_list_iterator_remove(&it); 9673 btstack_memory_hci_connection_free(con); 9674 } 9675 } 9676 void hci_simulate_working_fuzz(void){ 9677 hci_stack->le_scanning_param_update = false; 9678 hci_init_done(); 9679 hci_stack->num_cmd_packets = 255; 9680 } 9681 #endif 9682