1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static int hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 241 hci_iso_stream_state_t state); 242 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 243 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 244 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 245 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 246 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 247 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 248 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 249 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 250 static void hci_iso_notify_can_send_now(void); 251 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 252 static void hci_emit_big_terminated(const le_audio_big_t * big); 253 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 254 static void hci_emit_big_sync_stopped(uint8_t big_handle); 255 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 256 static void 257 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status); 258 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 259 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 260 #endif /* ENABLE_BLE */ 261 262 // the STACK is here 263 #ifndef HAVE_MALLOC 264 static hci_stack_t hci_stack_static; 265 #endif 266 static hci_stack_t * hci_stack = NULL; 267 268 #ifdef ENABLE_CLASSIC 269 // default name 270 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 271 272 // test helper 273 static uint8_t disable_l2cap_timeouts = 0; 274 #endif 275 276 // reset connection state on create and on reconnect 277 // don't overwrite addr, con handle, role 278 static void hci_connection_init(hci_connection_t * conn){ 279 conn->authentication_flags = AUTH_FLAG_NONE; 280 conn->bonding_flags = 0; 281 conn->requested_security_level = LEVEL_0; 282 #ifdef ENABLE_CLASSIC 283 conn->request_role = HCI_ROLE_INVALID; 284 conn->sniff_subrating_max_latency = 0xffff; 285 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 286 conn->link_key_type = INVALID_LINK_KEY; 287 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 288 btstack_run_loop_set_timer_context(&conn->timeout, conn); 289 hci_connection_timestamp(conn); 290 #endif 291 conn->acl_recombination_length = 0; 292 conn->acl_recombination_pos = 0; 293 conn->num_packets_sent = 0; 294 295 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 296 #ifdef ENABLE_BLE 297 conn->le_phy_update_all_phys = 0xff; 298 #endif 299 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 300 conn->le_max_tx_octets = 27; 301 #endif 302 #ifdef ENABLE_CLASSIC_PAIRING_OOB 303 conn->classic_oob_c_192 = NULL; 304 conn->classic_oob_r_192 = NULL; 305 conn->classic_oob_c_256 = NULL; 306 conn->classic_oob_r_256 = NULL; 307 #endif 308 } 309 310 /** 311 * create connection for given address 312 * 313 * @return connection OR NULL, if no memory left 314 */ 315 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 316 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 317 318 hci_connection_t * conn = btstack_memory_hci_connection_get(); 319 if (!conn) return NULL; 320 hci_connection_init(conn); 321 322 bd_addr_copy(conn->address, addr); 323 conn->address_type = addr_type; 324 conn->con_handle = HCI_CON_HANDLE_INVALID; 325 conn->role = HCI_ROLE_INVALID; 326 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 327 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 328 #endif 329 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 330 331 return conn; 332 } 333 334 335 /** 336 * get le connection parameter range 337 * 338 * @return le connection parameter range struct 339 */ 340 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 341 *range = hci_stack->le_connection_parameter_range; 342 } 343 344 /** 345 * set le connection parameter range 346 * 347 */ 348 349 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 350 hci_stack->le_connection_parameter_range = *range; 351 } 352 353 /** 354 * @brief Test if connection parameters are inside in existing rage 355 * @param conn_interval_min (unit: 1.25ms) 356 * @param conn_interval_max (unit: 1.25ms) 357 * @param conn_latency 358 * @param supervision_timeout (unit: 10ms) 359 * @return 1 if included 360 */ 361 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 362 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 363 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 364 365 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 366 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 367 368 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 369 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 370 371 return 1; 372 } 373 374 /** 375 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 376 * @note: default: 1 377 * @param max_peripheral_connections 378 */ 379 #ifdef ENABLE_LE_PERIPHERAL 380 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 381 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 382 } 383 #endif 384 385 /** 386 * get hci connections iterator 387 * 388 * @return hci connections iterator 389 */ 390 391 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 392 btstack_linked_list_iterator_init(it, &hci_stack->connections); 393 } 394 395 /** 396 * get connection for a given handle 397 * 398 * @return connection OR NULL, if not found 399 */ 400 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 401 btstack_linked_list_iterator_t it; 402 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 403 while (btstack_linked_list_iterator_has_next(&it)){ 404 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 405 if ( item->con_handle == con_handle ) { 406 return item; 407 } 408 } 409 return NULL; 410 } 411 412 /** 413 * get connection for given address 414 * 415 * @return connection OR NULL, if not found 416 */ 417 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 418 btstack_linked_list_iterator_t it; 419 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 420 while (btstack_linked_list_iterator_has_next(&it)){ 421 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 422 if (connection->address_type != addr_type) continue; 423 if (memcmp(addr, connection->address, 6) != 0) continue; 424 return connection; 425 } 426 return NULL; 427 } 428 429 #ifdef ENABLE_CLASSIC 430 431 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 432 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 433 } 434 435 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 436 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 437 } 438 439 #ifdef ENABLE_SCO_OVER_HCI 440 static int hci_number_sco_connections(void){ 441 int connections = 0; 442 btstack_linked_list_iterator_t it; 443 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 444 while (btstack_linked_list_iterator_has_next(&it)){ 445 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 446 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 447 connections++; 448 } 449 return connections; 450 } 451 #endif 452 453 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 454 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 455 #ifdef HAVE_EMBEDDED_TICK 456 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 457 // connections might be timed out 458 hci_emit_l2cap_check_timeout(connection); 459 } 460 #else 461 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 462 // connections might be timed out 463 hci_emit_l2cap_check_timeout(connection); 464 } 465 #endif 466 } 467 468 static void hci_connection_timestamp(hci_connection_t *connection){ 469 #ifdef HAVE_EMBEDDED_TICK 470 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 471 #else 472 connection->timestamp = btstack_run_loop_get_time_ms(); 473 #endif 474 } 475 476 /** 477 * add authentication flags and reset timer 478 * @note: assumes classic connection 479 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 480 */ 481 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 482 bd_addr_t addr; 483 reverse_bd_addr(bd_addr, addr); 484 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 485 if (conn) { 486 connectionSetAuthenticationFlags(conn, flags); 487 hci_connection_timestamp(conn); 488 } 489 } 490 491 static bool hci_pairing_active(hci_connection_t * hci_connection){ 492 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 493 } 494 495 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 496 if (hci_pairing_active(hci_connection)) return; 497 if (ssp){ 498 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 499 } else { 500 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 501 } 502 // if we are initiator, we have sent an HCI Authenticate Request 503 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 504 505 // if we are responder, use minimal service security level as required level 506 if (!initiator){ 507 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 508 } 509 510 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 511 512 uint8_t event[12]; 513 event[0] = GAP_EVENT_PAIRING_STARTED; 514 event[1] = 10; 515 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 516 reverse_bd_addr(hci_connection->address, &event[4]); 517 event[10] = (uint8_t) ssp; 518 event[11] = (uint8_t) initiator; 519 hci_emit_event(event, sizeof(event), 1); 520 } 521 522 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 523 hci_connection->requested_security_level = LEVEL_0; 524 if (!hci_pairing_active(hci_connection)) return; 525 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 526 #ifdef ENABLE_CLASSIC_PAIRING_OOB 527 hci_connection->classic_oob_c_192 = NULL; 528 hci_connection->classic_oob_r_192 = NULL; 529 hci_connection->classic_oob_c_256 = NULL; 530 hci_connection->classic_oob_r_256 = NULL; 531 #endif 532 log_info("pairing complete, status %02x", status); 533 534 uint8_t event[11]; 535 event[0] = GAP_EVENT_PAIRING_COMPLETE; 536 event[1] = 9; 537 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 538 reverse_bd_addr(hci_connection->address, &event[4]); 539 event[10] = status; 540 hci_emit_event(event, sizeof(event), 1); 541 542 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 543 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 544 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 545 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 546 hci_connection->bonding_status = status; 547 } 548 } 549 550 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 551 hci_connection_t * conn = hci_connection_for_handle(handle); 552 if (!conn) return false; 553 return hci_pairing_active(conn); 554 } 555 556 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 557 if (!hci_stack->link_key_db) return; 558 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 559 hci_stack->link_key_db->delete_link_key(addr); 560 } 561 562 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 563 if (!hci_stack->link_key_db) return; 564 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 565 hci_stack->link_key_db->put_link_key(addr, link_key, type); 566 } 567 568 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 569 if (!hci_stack->link_key_db) return false; 570 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 571 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 572 return result; 573 } 574 575 void gap_delete_all_link_keys(void){ 576 bd_addr_t addr; 577 link_key_t link_key; 578 link_key_type_t type; 579 btstack_link_key_iterator_t it; 580 int ok = gap_link_key_iterator_init(&it); 581 if (!ok) { 582 log_error("could not initialize iterator"); 583 return; 584 } 585 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 586 gap_drop_link_key_for_bd_addr(addr); 587 } 588 gap_link_key_iterator_done(&it); 589 } 590 591 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 592 if (!hci_stack->link_key_db) return 0; 593 if (!hci_stack->link_key_db->iterator_init) return 0; 594 return hci_stack->link_key_db->iterator_init(it); 595 } 596 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 597 if (!hci_stack->link_key_db) return 0; 598 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 599 } 600 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 601 if (!hci_stack->link_key_db) return; 602 hci_stack->link_key_db->iterator_done(it); 603 } 604 #endif 605 606 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 607 switch (address_type){ 608 case BD_ADDR_TYPE_LE_PUBLIC: 609 case BD_ADDR_TYPE_LE_RANDOM: 610 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 611 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 612 return true; 613 default: 614 return false; 615 } 616 } 617 618 static int hci_is_le_connection(hci_connection_t * connection){ 619 return hci_is_le_connection_type(connection->address_type); 620 } 621 622 /** 623 * count connections 624 */ 625 static int nr_hci_connections(void){ 626 int count = 0; 627 btstack_linked_item_t *it; 628 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 629 count++; 630 } 631 return count; 632 } 633 634 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 635 636 unsigned int num_packets_sent_classic = 0; 637 unsigned int num_packets_sent_le = 0; 638 639 btstack_linked_item_t *it; 640 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 641 hci_connection_t * connection = (hci_connection_t *) it; 642 if (hci_is_le_connection(connection)){ 643 num_packets_sent_le += connection->num_packets_sent; 644 } 645 if (connection->address_type == BD_ADDR_TYPE_ACL){ 646 num_packets_sent_classic += connection->num_packets_sent; 647 } 648 } 649 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 650 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 651 int free_slots_le = 0; 652 653 if (free_slots_classic < 0){ 654 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 655 return 0; 656 } 657 658 if (hci_stack->le_acl_packets_total_num){ 659 // if we have LE slots, they are used 660 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 661 if (free_slots_le < 0){ 662 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 663 return 0; 664 } 665 } else { 666 // otherwise, classic slots are used for LE, too 667 free_slots_classic -= num_packets_sent_le; 668 if (free_slots_classic < 0){ 669 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 670 return 0; 671 } 672 } 673 674 switch (address_type){ 675 case BD_ADDR_TYPE_UNKNOWN: 676 log_error("hci_number_free_acl_slots: unknown address type"); 677 return 0; 678 679 case BD_ADDR_TYPE_ACL: 680 return (uint16_t) free_slots_classic; 681 682 default: 683 if (hci_stack->le_acl_packets_total_num > 0){ 684 return (uint16_t) free_slots_le; 685 } 686 return (uint16_t) free_slots_classic; 687 } 688 } 689 690 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 691 // get connection type 692 hci_connection_t * connection = hci_connection_for_handle(con_handle); 693 if (!connection){ 694 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 695 return 0; 696 } 697 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 698 } 699 700 #ifdef ENABLE_CLASSIC 701 static int hci_number_free_sco_slots(void){ 702 unsigned int num_sco_packets_sent = 0; 703 btstack_linked_item_t *it; 704 if (hci_stack->synchronous_flow_control_enabled){ 705 // explicit flow control 706 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 707 hci_connection_t * connection = (hci_connection_t *) it; 708 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 709 num_sco_packets_sent += connection->num_packets_sent; 710 } 711 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 712 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 713 return 0; 714 } 715 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 716 } else { 717 // implicit flow control -- TODO 718 int num_ready = 0; 719 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 720 hci_connection_t * connection = (hci_connection_t *) it; 721 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 722 if (connection->sco_tx_ready == 0) continue; 723 num_ready++; 724 } 725 return num_ready; 726 } 727 } 728 #endif 729 730 // only used to send HCI Host Number Completed Packets 731 static int hci_can_send_comand_packet_transport(void){ 732 if (hci_stack->hci_packet_buffer_reserved) return 0; 733 734 // check for async hci transport implementations 735 if (hci_stack->hci_transport->can_send_packet_now){ 736 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 737 return 0; 738 } 739 } 740 return 1; 741 } 742 743 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 744 bool hci_can_send_command_packet_now(void){ 745 if (hci_can_send_comand_packet_transport() == 0) return false; 746 return hci_stack->num_cmd_packets > 0u; 747 } 748 749 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 750 // check for async hci transport implementations 751 if (!hci_stack->hci_transport->can_send_packet_now) return true; 752 return hci_stack->hci_transport->can_send_packet_now(packet_type); 753 } 754 755 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 756 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 757 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 758 } 759 760 bool hci_can_send_acl_le_packet_now(void){ 761 if (hci_stack->hci_packet_buffer_reserved) return false; 762 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 763 } 764 765 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 766 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 767 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 768 } 769 770 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 771 if (hci_stack->hci_packet_buffer_reserved) return false; 772 return hci_can_send_prepared_acl_packet_now(con_handle); 773 } 774 775 #ifdef ENABLE_CLASSIC 776 bool hci_can_send_acl_classic_packet_now(void){ 777 if (hci_stack->hci_packet_buffer_reserved) return false; 778 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 779 } 780 781 bool hci_can_send_prepared_sco_packet_now(void){ 782 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 783 if (hci_have_usb_transport()){ 784 return hci_stack->sco_can_send_now; 785 } else { 786 return hci_number_free_sco_slots() > 0; 787 } 788 } 789 790 bool hci_can_send_sco_packet_now(void){ 791 if (hci_stack->hci_packet_buffer_reserved) return false; 792 return hci_can_send_prepared_sco_packet_now(); 793 } 794 795 void hci_request_sco_can_send_now_event(void){ 796 hci_stack->sco_waiting_for_can_send_now = 1; 797 hci_notify_if_sco_can_send_now(); 798 } 799 #endif 800 801 // used for internal checks in l2cap.c 802 bool hci_is_packet_buffer_reserved(void){ 803 return hci_stack->hci_packet_buffer_reserved; 804 } 805 806 // reserves outgoing packet buffer. 807 // @return 1 if successful 808 bool hci_reserve_packet_buffer(void){ 809 if (hci_stack->hci_packet_buffer_reserved) { 810 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 811 return false; 812 } 813 hci_stack->hci_packet_buffer_reserved = true; 814 return true; 815 } 816 817 void hci_release_packet_buffer(void){ 818 hci_stack->hci_packet_buffer_reserved = false; 819 } 820 821 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 822 static int hci_transport_synchronous(void){ 823 return hci_stack->hci_transport->can_send_packet_now == NULL; 824 } 825 826 // used for debugging 827 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 828 static void hci_controller_dump_packets(void){ 829 // format: "{handle:04x}:{count:02d} " 830 char summaries[3][7 * 8 + 1]; 831 uint16_t totals[3]; 832 uint8_t index; 833 for (index = 0 ; index < 3 ; index++){ 834 summaries[index][0] = 0; 835 totals[index] = 0; 836 } 837 btstack_linked_item_t *it; 838 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 839 hci_connection_t * connection = (hci_connection_t *) it; 840 switch (connection->address_type){ 841 case BD_ADDR_TYPE_ACL: 842 index = 0; 843 break; 844 case BD_ADDR_TYPE_SCO: 845 index = 2; 846 break; 847 default: 848 index = 1; 849 break; 850 } 851 totals[index] += connection->num_packets_sent; 852 char item_text[10]; 853 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 854 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 855 } 856 for (index = 0 ; index < 3 ; index++){ 857 if (summaries[index][0] == 0){ 858 summaries[index][0] = '-'; 859 summaries[index][1] = 0; 860 } 861 } 862 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 863 } 864 #endif 865 866 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 867 868 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 869 870 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 871 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 872 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 873 max_acl_data_packet_length = hci_stack->le_data_packets_length; 874 } 875 876 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 877 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 878 max_acl_data_packet_length = connection->le_max_tx_octets; 879 } 880 #endif 881 882 log_debug("hci_send_acl_packet_fragments entered"); 883 884 uint8_t status = ERROR_CODE_SUCCESS; 885 // multiple packets could be send on a synchronous HCI transport 886 while (true){ 887 888 log_debug("hci_send_acl_packet_fragments loop entered"); 889 890 // get current data 891 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 892 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 893 bool more_fragments = false; 894 895 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 896 if (current_acl_data_packet_length > max_acl_data_packet_length){ 897 more_fragments = true; 898 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 899 } 900 901 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 902 if (acl_header_pos > 0u){ 903 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 904 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 905 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 906 } 907 908 // update header len 909 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 910 911 // count packet 912 connection->num_packets_sent++; 913 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 914 915 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 916 if (more_fragments){ 917 // update start of next fragment to send 918 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 919 } else { 920 // done 921 hci_stack->acl_fragmentation_pos = 0; 922 hci_stack->acl_fragmentation_total_size = 0; 923 } 924 925 // send packet 926 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 927 const int size = current_acl_data_packet_length + 4; 928 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 929 hci_stack->acl_fragmentation_tx_active = 1; 930 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 931 if (err != 0){ 932 // no error from HCI Transport expected 933 status = ERROR_CODE_HARDWARE_FAILURE; 934 } 935 936 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 937 hci_controller_dump_packets(); 938 #endif 939 940 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 941 942 // done yet? 943 if (!more_fragments) break; 944 945 // can send more? 946 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 947 } 948 949 log_debug("hci_send_acl_packet_fragments loop over"); 950 951 // release buffer now for synchronous transport 952 if (hci_transport_synchronous()){ 953 hci_stack->acl_fragmentation_tx_active = 0; 954 hci_release_packet_buffer(); 955 hci_emit_transport_packet_sent(); 956 } 957 958 return status; 959 } 960 961 // pre: caller has reserved the packet buffer 962 uint8_t hci_send_acl_packet_buffer(int size){ 963 btstack_assert(hci_stack->hci_packet_buffer_reserved); 964 965 uint8_t * packet = hci_stack->hci_packet_buffer; 966 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 967 968 // check for free places on Bluetooth module 969 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 970 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 971 hci_release_packet_buffer(); 972 hci_emit_transport_packet_sent(); 973 return BTSTACK_ACL_BUFFERS_FULL; 974 } 975 976 hci_connection_t *connection = hci_connection_for_handle( con_handle); 977 if (!connection) { 978 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 979 hci_release_packet_buffer(); 980 hci_emit_transport_packet_sent(); 981 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 982 } 983 984 #ifdef ENABLE_CLASSIC 985 hci_connection_timestamp(connection); 986 #endif 987 988 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 989 990 // setup data 991 hci_stack->acl_fragmentation_total_size = size; 992 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 993 994 return hci_send_acl_packet_fragments(connection); 995 } 996 997 #ifdef ENABLE_CLASSIC 998 // pre: caller has reserved the packet buffer 999 uint8_t hci_send_sco_packet_buffer(int size){ 1000 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1001 1002 uint8_t * packet = hci_stack->hci_packet_buffer; 1003 1004 // skip checks in loopback mode 1005 if (!hci_stack->loopback_mode){ 1006 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1007 1008 // check for free places on Bluetooth module 1009 if (!hci_can_send_prepared_sco_packet_now()) { 1010 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1011 hci_release_packet_buffer(); 1012 hci_emit_transport_packet_sent(); 1013 return BTSTACK_ACL_BUFFERS_FULL; 1014 } 1015 1016 // track send packet in connection struct 1017 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1018 if (!connection) { 1019 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1020 hci_release_packet_buffer(); 1021 hci_emit_transport_packet_sent(); 1022 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1023 } 1024 1025 if (hci_have_usb_transport()){ 1026 // token used 1027 hci_stack->sco_can_send_now = false; 1028 } else { 1029 if (hci_stack->synchronous_flow_control_enabled){ 1030 connection->num_packets_sent++; 1031 } else { 1032 connection->sco_tx_ready--; 1033 } 1034 } 1035 } 1036 1037 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1038 1039 #ifdef HAVE_SCO_TRANSPORT 1040 hci_stack->sco_transport->send_packet(packet, size); 1041 hci_release_packet_buffer(); 1042 hci_emit_transport_packet_sent(); 1043 1044 return 0; 1045 #else 1046 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1047 if (hci_transport_synchronous()){ 1048 hci_release_packet_buffer(); 1049 hci_emit_transport_packet_sent(); 1050 } 1051 1052 if (err != 0){ 1053 return ERROR_CODE_HARDWARE_FAILURE; 1054 } 1055 return ERROR_CODE_SUCCESS; 1056 #endif 1057 } 1058 #endif 1059 1060 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1061 static uint8_t hci_send_iso_packet_fragments(void){ 1062 1063 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1064 uint8_t status = ERROR_CODE_SUCCESS; 1065 // multiple packets could be send on a synchronous HCI transport 1066 while (true){ 1067 1068 // get current data 1069 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1070 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1071 bool more_fragments = false; 1072 1073 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1074 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1075 more_fragments = true; 1076 current_iso_data_packet_length = max_iso_data_packet_length; 1077 } 1078 1079 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1080 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1081 uint8_t pb_flags; 1082 if (iso_header_pos == 0u){ 1083 // first fragment, keep TS field 1084 pb_flags = more_fragments ? 0x00 : 0x02; 1085 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1086 } else { 1087 // later fragment, drop TS field 1088 pb_flags = more_fragments ? 0x01 : 0x03; 1089 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1090 } 1091 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1092 1093 // update header len 1094 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1095 1096 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1097 if (more_fragments){ 1098 // update start of next fragment to send 1099 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1100 } else { 1101 // done 1102 hci_stack->iso_fragmentation_pos = 0; 1103 hci_stack->iso_fragmentation_total_size = 0; 1104 } 1105 1106 // send packet 1107 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1108 const int size = current_iso_data_packet_length + 4; 1109 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1110 hci_stack->iso_fragmentation_tx_active = true; 1111 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1112 if (err != 0){ 1113 // no error from HCI Transport expected 1114 status = ERROR_CODE_HARDWARE_FAILURE; 1115 } 1116 1117 // done yet? 1118 if (!more_fragments) break; 1119 1120 // can send more? 1121 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1122 } 1123 1124 // release buffer now for synchronous transport 1125 if (hci_transport_synchronous()){ 1126 hci_stack->iso_fragmentation_tx_active = false; 1127 hci_release_packet_buffer(); 1128 hci_emit_transport_packet_sent(); 1129 } 1130 1131 return status; 1132 } 1133 1134 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1135 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1136 1137 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1138 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1139 if (iso_stream == NULL){ 1140 hci_release_packet_buffer(); 1141 hci_iso_notify_can_send_now(); 1142 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1143 } 1144 1145 // TODO: check for space on controller 1146 1147 // skip iso packets if needed 1148 if (iso_stream->num_packets_to_skip > 0){ 1149 iso_stream->num_packets_to_skip--; 1150 // pretend it was processed and trigger next one 1151 hci_release_packet_buffer(); 1152 hci_iso_notify_can_send_now(); 1153 return ERROR_CODE_SUCCESS; 1154 } 1155 1156 // track outgoing packet sent 1157 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1158 iso_stream->num_packets_sent++; 1159 1160 // setup data 1161 hci_stack->iso_fragmentation_total_size = size; 1162 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1163 1164 return hci_send_iso_packet_fragments(); 1165 } 1166 #endif 1167 1168 static void acl_handler(uint8_t *packet, uint16_t size){ 1169 1170 // get info 1171 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1172 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1173 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1174 uint16_t acl_length = READ_ACL_LENGTH(packet); 1175 1176 // ignore non-registered handle 1177 if (!conn){ 1178 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1179 return; 1180 } 1181 1182 // assert packet is complete 1183 if ((acl_length + 4u) != size){ 1184 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1185 return; 1186 } 1187 1188 #ifdef ENABLE_CLASSIC 1189 // update idle timestamp 1190 hci_connection_timestamp(conn); 1191 #endif 1192 1193 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1194 hci_stack->host_completed_packets = 1; 1195 conn->num_packets_completed++; 1196 #endif 1197 1198 // handle different packet types 1199 switch (acl_flags & 0x03u) { 1200 1201 case 0x01: // continuation fragment 1202 1203 // sanity checks 1204 if (conn->acl_recombination_pos == 0u) { 1205 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1206 return; 1207 } 1208 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1209 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1210 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1211 conn->acl_recombination_pos = 0; 1212 return; 1213 } 1214 1215 // append fragment payload (header already stored) 1216 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1217 &packet[4], acl_length); 1218 conn->acl_recombination_pos += acl_length; 1219 1220 // forward complete L2CAP packet if complete. 1221 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1222 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1223 // reset recombination buffer 1224 conn->acl_recombination_length = 0; 1225 conn->acl_recombination_pos = 0; 1226 } 1227 break; 1228 1229 case 0x02: { // first fragment 1230 1231 // sanity check 1232 if (conn->acl_recombination_pos) { 1233 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1234 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1235 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1236 } 1237 conn->acl_recombination_pos = 0; 1238 } 1239 1240 // peek into L2CAP packet! 1241 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1242 1243 // compare fragment size to L2CAP packet size 1244 if (acl_length >= (l2cap_length + 4u)){ 1245 // forward fragment as L2CAP packet 1246 hci_emit_acl_packet(packet, acl_length + 4u); 1247 } else { 1248 1249 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1250 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1251 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1252 return; 1253 } 1254 1255 // store first fragment and tweak acl length for complete package 1256 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1257 packet, acl_length + 4u); 1258 conn->acl_recombination_pos = acl_length + 4u; 1259 conn->acl_recombination_length = l2cap_length; 1260 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1261 } 1262 break; 1263 1264 } 1265 default: 1266 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1267 return; 1268 } 1269 1270 // execute main loop 1271 hci_run(); 1272 } 1273 1274 static void hci_connection_stop_timer(hci_connection_t * conn){ 1275 btstack_run_loop_remove_timer(&conn->timeout); 1276 #ifdef ENABLE_CLASSIC 1277 btstack_run_loop_remove_timer(&conn->timeout_sco); 1278 #endif 1279 } 1280 1281 static void hci_shutdown_connection(hci_connection_t *conn){ 1282 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1283 1284 #ifdef ENABLE_CLASSIC 1285 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1286 bd_addr_type_t addr_type = conn->address_type; 1287 #endif 1288 #ifdef HAVE_SCO_TRANSPORT 1289 hci_con_handle_t con_handle = conn->con_handle; 1290 #endif 1291 #endif 1292 1293 hci_connection_stop_timer(conn); 1294 1295 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1296 btstack_memory_hci_connection_free( conn ); 1297 1298 // now it's gone 1299 hci_emit_nr_connections_changed(); 1300 1301 #ifdef ENABLE_CLASSIC 1302 #ifdef ENABLE_SCO_OVER_HCI 1303 // update SCO 1304 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1305 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1306 } 1307 #endif 1308 #ifdef HAVE_SCO_TRANSPORT 1309 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1310 hci_stack->sco_transport->close(con_handle); 1311 } 1312 #endif 1313 #endif 1314 } 1315 1316 #ifdef ENABLE_CLASSIC 1317 1318 static const uint16_t packet_type_sizes[] = { 1319 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1320 HCI_ACL_DH1_SIZE, 0, 0, 0, 1321 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1322 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1323 }; 1324 static const uint8_t packet_type_feature_requirement_bit[] = { 1325 0, // 3 slot packets 1326 1, // 5 slot packets 1327 25, // EDR 2 mpbs 1328 26, // EDR 3 mbps 1329 39, // 3 slot EDR packts 1330 40, // 5 slot EDR packet 1331 }; 1332 static const uint16_t packet_type_feature_packet_mask[] = { 1333 0x0f00, // 3 slot packets 1334 0xf000, // 5 slot packets 1335 0x1102, // EDR 2 mpbs 1336 0x2204, // EDR 3 mbps 1337 0x0300, // 3 slot EDR packts 1338 0x3000, // 5 slot EDR packet 1339 }; 1340 1341 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1342 // enable packet types based on size 1343 uint16_t packet_types = 0; 1344 unsigned int i; 1345 for (i=0;i<16;i++){ 1346 if (packet_type_sizes[i] == 0) continue; 1347 if (packet_type_sizes[i] <= buffer_size){ 1348 packet_types |= 1 << i; 1349 } 1350 } 1351 // disable packet types due to missing local supported features 1352 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1353 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1354 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1355 if (feature_set) continue; 1356 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1357 packet_types &= ~packet_type_feature_packet_mask[i]; 1358 } 1359 // flip bits for "may not be used" 1360 packet_types ^= 0x3306; 1361 return packet_types; 1362 } 1363 1364 uint16_t hci_usable_acl_packet_types(void){ 1365 return hci_stack->packet_types; 1366 } 1367 #endif 1368 1369 uint8_t* hci_get_outgoing_packet_buffer(void){ 1370 // hci packet buffer is >= acl data packet length 1371 return hci_stack->hci_packet_buffer; 1372 } 1373 1374 uint16_t hci_max_acl_data_packet_length(void){ 1375 return hci_stack->acl_data_packet_length; 1376 } 1377 1378 #ifdef ENABLE_CLASSIC 1379 bool hci_extended_sco_link_supported(void){ 1380 // No. 31, byte 3, bit 7 1381 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1382 } 1383 #endif 1384 1385 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1386 // No. 54, byte 6, bit 6 1387 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1388 } 1389 1390 #ifdef ENABLE_CLASSIC 1391 static int gap_ssp_supported(void){ 1392 // No. 51, byte 6, bit 3 1393 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1394 } 1395 #endif 1396 1397 static int hci_classic_supported(void){ 1398 #ifdef ENABLE_CLASSIC 1399 // No. 37, byte 4, bit 5, = No BR/EDR Support 1400 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1401 #else 1402 return 0; 1403 #endif 1404 } 1405 1406 static int hci_le_supported(void){ 1407 #ifdef ENABLE_BLE 1408 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1409 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1410 #else 1411 return 0; 1412 #endif 1413 } 1414 1415 static bool hci_command_supported(uint8_t command_index){ 1416 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1417 } 1418 1419 #ifdef ENABLE_BLE 1420 1421 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1422 static bool hci_extended_advertising_supported(void){ 1423 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1424 } 1425 #endif 1426 1427 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1428 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1429 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1430 } else { 1431 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1432 } 1433 } 1434 1435 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1436 *addr_type = hci_stack->le_own_addr_type; 1437 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1438 } 1439 1440 #ifdef ENABLE_LE_PERIPHERAL 1441 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1442 *addr_type = hci_stack->le_advertisements_own_addr_type; 1443 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1444 }; 1445 #endif 1446 1447 #ifdef ENABLE_LE_CENTRAL 1448 1449 /** 1450 * @brief Get own addr type and address used for LE connections (Central) 1451 */ 1452 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1453 *addr_type = hci_stack->le_connection_own_addr_type; 1454 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1455 } 1456 1457 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1458 1459 uint16_t offset = 3; 1460 uint8_t num_reports = packet[offset]; 1461 offset += 1; 1462 1463 uint16_t i; 1464 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1465 for (i=0; (i<num_reports) && (offset < size);i++){ 1466 // sanity checks on data_length: 1467 uint8_t data_length = packet[offset + 8]; 1468 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1469 if ((offset + 9u + data_length + 1u) > size) return; 1470 // setup event 1471 uint8_t event_size = 10u + data_length; 1472 uint16_t pos = 0; 1473 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1474 event[pos++] = event_size; 1475 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1476 offset += 8; 1477 pos += 8; 1478 event[pos++] = packet[offset + 1 + data_length]; // rssi 1479 event[pos++] = data_length; 1480 offset++; 1481 (void)memcpy(&event[pos], &packet[offset], data_length); 1482 pos += data_length; 1483 offset += data_length + 1u; // rssi 1484 hci_emit_event(event, pos, 1); 1485 } 1486 } 1487 1488 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1489 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1490 uint16_t offset = 3; 1491 uint8_t num_reports = packet[offset++]; 1492 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1493 uint8_t i; 1494 for (i=0; (i<num_reports) && (offset < size);i++){ 1495 // sanity checks on data_length: 1496 uint16_t data_length = packet[offset + 23]; 1497 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1498 if ((offset + 24u + data_length) > size) return; 1499 uint16_t event_type = little_endian_read_16(packet, offset); 1500 offset += 2; 1501 if ((event_type & 0x10) != 0) { 1502 // setup legacy event 1503 uint8_t legacy_event_type; 1504 switch (event_type){ 1505 case 0b0010011: 1506 // ADV_IND 1507 legacy_event_type = 0; 1508 break; 1509 case 0b0010101: 1510 // ADV_DIRECT_IND 1511 legacy_event_type = 1; 1512 break; 1513 case 0b0010010: 1514 // ADV_SCAN_IND 1515 legacy_event_type = 2; 1516 break; 1517 case 0b0010000: 1518 // ADV_NONCONN_IND 1519 legacy_event_type = 3; 1520 break; 1521 case 0b0011011: 1522 case 0b0011010: 1523 // SCAN_RSP 1524 legacy_event_type = 4; 1525 break; 1526 default: 1527 legacy_event_type = 0; 1528 break; 1529 } 1530 uint16_t pos = 0; 1531 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1532 event[pos++] = 10u + data_length; 1533 event[pos++] = legacy_event_type; 1534 // copy address type + address 1535 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1536 offset += 7; 1537 pos += 7; 1538 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1539 offset += 4; 1540 // copy rssi 1541 event[pos++] = packet[offset++]; 1542 // skip periodic advertising interval and direct address 1543 offset += 9; 1544 // copy data len + data; 1545 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1546 pos += 1 +data_length; 1547 offset += 1+ data_length; 1548 hci_emit_event(event, pos, 1); 1549 } else { 1550 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1551 uint8_t report_len = 24 + data_length; 1552 event[1] = report_len; 1553 little_endian_store_16(event, 2, event_type); 1554 memcpy(&event[4], &packet[offset], report_len); 1555 offset += report_len; 1556 hci_emit_event(event, 2 + report_len, 1); 1557 } 1558 } 1559 } 1560 #endif 1561 1562 #endif 1563 #endif 1564 1565 #ifdef ENABLE_BLE 1566 #ifdef ENABLE_LE_PERIPHERAL 1567 static void hci_update_advertisements_enabled_for_current_roles(void){ 1568 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1569 // get number of active le slave connections 1570 int num_slave_connections = 0; 1571 btstack_linked_list_iterator_t it; 1572 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1573 while (btstack_linked_list_iterator_has_next(&it)){ 1574 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1575 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1576 if (con->state != OPEN) continue; 1577 if (con->role != HCI_ROLE_SLAVE) continue; 1578 if (!hci_is_le_connection(con)) continue; 1579 num_slave_connections++; 1580 } 1581 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1582 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1583 } else { 1584 hci_stack->le_advertisements_enabled_for_current_roles = false; 1585 } 1586 } 1587 #endif 1588 #endif 1589 1590 #ifdef ENABLE_CLASSIC 1591 static void gap_run_set_local_name(void){ 1592 hci_reserve_packet_buffer(); 1593 uint8_t * packet = hci_stack->hci_packet_buffer; 1594 // construct HCI Command and send 1595 uint16_t opcode = hci_write_local_name.opcode; 1596 hci_stack->last_cmd_opcode = opcode; 1597 packet[0] = opcode & 0xff; 1598 packet[1] = opcode >> 8; 1599 packet[2] = DEVICE_NAME_LEN; 1600 memset(&packet[3], 0, DEVICE_NAME_LEN); 1601 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1602 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1603 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1604 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1605 // expand '00:00:00:00:00:00' in name with bd_addr 1606 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1607 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1608 } 1609 1610 static void gap_run_set_eir_data(void){ 1611 hci_reserve_packet_buffer(); 1612 uint8_t * packet = hci_stack->hci_packet_buffer; 1613 // construct HCI Command in-place and send 1614 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1615 hci_stack->last_cmd_opcode = opcode; 1616 uint16_t offset = 0; 1617 packet[offset++] = opcode & 0xff; 1618 packet[offset++] = opcode >> 8; 1619 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1620 packet[offset++] = 0; // FEC not required 1621 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1622 if (hci_stack->eir_data){ 1623 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1624 ad_context_t context; 1625 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1626 uint8_t data_type = ad_iterator_get_data_type(&context); 1627 uint8_t size = ad_iterator_get_data_len(&context); 1628 const uint8_t *data = ad_iterator_get_data(&context); 1629 // copy item 1630 packet[offset++] = size + 1; 1631 packet[offset++] = data_type; 1632 memcpy(&packet[offset], data, size); 1633 // update name item 1634 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1635 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1636 } 1637 offset += size; 1638 } 1639 } else { 1640 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1641 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1642 packet[offset++] = bytes_to_copy + 1; 1643 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1644 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1645 // expand '00:00:00:00:00:00' in name with bd_addr 1646 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1647 } 1648 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1649 } 1650 1651 static void hci_run_gap_tasks_classic(void){ 1652 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1653 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1654 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1655 return; 1656 } 1657 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1658 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1659 gap_run_set_local_name(); 1660 return; 1661 } 1662 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1663 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1664 gap_run_set_eir_data(); 1665 return; 1666 } 1667 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1668 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1669 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1670 return; 1671 } 1672 // write page scan activity 1673 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1674 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1675 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1676 return; 1677 } 1678 // write page scan type 1679 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1680 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1681 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1682 return; 1683 } 1684 // write page timeout 1685 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1686 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1687 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1688 return; 1689 } 1690 // send scan enable 1691 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1692 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1693 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1694 return; 1695 } 1696 // send write scan activity 1697 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1698 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1699 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1700 return; 1701 } 1702 } 1703 #endif 1704 1705 #ifndef HAVE_HOST_CONTROLLER_API 1706 1707 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1708 if (!hci_stack->config) return 0; 1709 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1710 // Limit baud rate for Broadcom chipsets to 3 mbps 1711 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1712 baud_rate = 3000000; 1713 } 1714 return baud_rate; 1715 } 1716 1717 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1718 UNUSED(ds); 1719 1720 switch (hci_stack->substate){ 1721 case HCI_INIT_W4_SEND_RESET: 1722 log_info("Resend HCI Reset"); 1723 hci_stack->substate = HCI_INIT_SEND_RESET; 1724 hci_stack->num_cmd_packets = 1; 1725 hci_run(); 1726 break; 1727 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1728 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1729 if (hci_stack->hci_transport->reset_link){ 1730 hci_stack->hci_transport->reset_link(); 1731 } 1732 1733 /* fall through */ 1734 1735 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1736 log_info("Resend HCI Reset - CSR Warm Boot"); 1737 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1738 hci_stack->num_cmd_packets = 1; 1739 hci_run(); 1740 break; 1741 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1742 if (hci_stack->hci_transport->set_baudrate){ 1743 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1744 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1745 hci_stack->hci_transport->set_baudrate(baud_rate); 1746 } 1747 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1748 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1749 if (hci_stack->hci_transport->reset_link){ 1750 log_info("Link Reset"); 1751 hci_stack->hci_transport->reset_link(); 1752 } 1753 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1754 hci_run(); 1755 } 1756 break; 1757 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1758 // otherwise continue 1759 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1760 hci_send_cmd(&hci_read_local_supported_commands); 1761 break; 1762 default: 1763 break; 1764 } 1765 } 1766 #endif 1767 1768 static void hci_initializing_next_state(void){ 1769 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1770 } 1771 1772 static void hci_init_done(void){ 1773 // done. tell the app 1774 log_info("hci_init_done -> HCI_STATE_WORKING"); 1775 hci_stack->state = HCI_STATE_WORKING; 1776 hci_emit_state(); 1777 } 1778 1779 // assumption: hci_can_send_command_packet_now() == true 1780 static void hci_initializing_run(void){ 1781 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1782 1783 if (!hci_can_send_command_packet_now()) return; 1784 1785 #ifndef HAVE_HOST_CONTROLLER_API 1786 bool need_baud_change = hci_stack->config 1787 && hci_stack->chipset 1788 && hci_stack->chipset->set_baudrate_command 1789 && hci_stack->hci_transport->set_baudrate 1790 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1791 #endif 1792 1793 switch (hci_stack->substate){ 1794 case HCI_INIT_SEND_RESET: 1795 hci_state_reset(); 1796 1797 #ifndef HAVE_HOST_CONTROLLER_API 1798 // prepare reset if command complete not received in 100ms 1799 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1800 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1801 btstack_run_loop_add_timer(&hci_stack->timeout); 1802 #endif 1803 // send command 1804 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1805 hci_send_cmd(&hci_reset); 1806 break; 1807 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1808 hci_send_cmd(&hci_read_local_version_information); 1809 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1810 break; 1811 1812 #ifndef HAVE_HOST_CONTROLLER_API 1813 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1814 hci_state_reset(); 1815 // prepare reset if command complete not received in 100ms 1816 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1817 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1818 btstack_run_loop_add_timer(&hci_stack->timeout); 1819 // send command 1820 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1821 hci_send_cmd(&hci_reset); 1822 break; 1823 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1824 hci_state_reset(); 1825 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1826 hci_send_cmd(&hci_reset); 1827 break; 1828 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1829 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1830 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1831 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1832 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1833 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1834 break; 1835 } 1836 case HCI_INIT_SET_BD_ADDR: 1837 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1838 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1839 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1840 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1841 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1842 break; 1843 case HCI_INIT_SEND_READ_LOCAL_NAME: 1844 #ifdef ENABLE_CLASSIC 1845 hci_send_cmd(&hci_read_local_name); 1846 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1847 break; 1848 #endif 1849 /* fall through */ 1850 1851 case HCI_INIT_SEND_BAUD_CHANGE: 1852 if (need_baud_change) { 1853 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1854 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1855 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1856 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1857 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1858 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1859 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1860 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1861 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1862 btstack_run_loop_add_timer(&hci_stack->timeout); 1863 } 1864 break; 1865 } 1866 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1867 1868 /* fall through */ 1869 1870 case HCI_INIT_CUSTOM_INIT: 1871 case HCI_INIT_CUSTOM_PRE_INIT: 1872 // Custom initialization 1873 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1874 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1875 bool send_cmd = false; 1876 switch (hci_stack->chipset_result){ 1877 case BTSTACK_CHIPSET_VALID_COMMAND: 1878 send_cmd = true; 1879 switch (hci_stack->substate){ 1880 case HCI_INIT_CUSTOM_INIT: 1881 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1882 break; 1883 case HCI_INIT_CUSTOM_PRE_INIT: 1884 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1885 break; 1886 default: 1887 btstack_assert(false); 1888 break; 1889 } 1890 break; 1891 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1892 send_cmd = true; 1893 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1894 log_info("CSR Warm Boot"); 1895 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1896 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1897 btstack_run_loop_add_timer(&hci_stack->timeout); 1898 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1899 && hci_stack->config 1900 && hci_stack->chipset 1901 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1902 && hci_stack->hci_transport->set_baudrate 1903 && hci_transport_uart_get_main_baud_rate()){ 1904 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1905 } else { 1906 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1907 } 1908 break; 1909 default: 1910 break; 1911 } 1912 1913 if (send_cmd){ 1914 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1915 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1916 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1917 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1918 break; 1919 } 1920 log_info("Init script done"); 1921 1922 // Custom Pre-Init complete, start regular init with HCI Reset 1923 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1924 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1925 hci_send_cmd(&hci_reset); 1926 break; 1927 } 1928 1929 // Init script download on Broadcom chipsets causes: 1930 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1931 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1932 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1933 1934 // - baud rate to reset, restore UART baud rate if needed 1935 if (need_baud_change) { 1936 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1937 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1938 hci_stack->hci_transport->set_baudrate(baud_rate); 1939 } 1940 1941 uint16_t bcm_delay_ms = 300; 1942 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1943 // -> Work around: wait here. 1944 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1945 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1946 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1947 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1948 btstack_run_loop_add_timer(&hci_stack->timeout); 1949 break; 1950 } 1951 } 1952 #endif 1953 /* fall through */ 1954 1955 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1956 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1957 hci_send_cmd(&hci_read_local_supported_commands); 1958 break; 1959 case HCI_INIT_READ_BD_ADDR: 1960 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1961 hci_send_cmd(&hci_read_bd_addr); 1962 break; 1963 case HCI_INIT_READ_BUFFER_SIZE: 1964 // only read buffer size if supported 1965 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1966 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1967 hci_send_cmd(&hci_read_buffer_size); 1968 break; 1969 } 1970 1971 /* fall through */ 1972 1973 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1974 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1975 hci_send_cmd(&hci_read_local_supported_features); 1976 break; 1977 1978 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1979 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1980 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1981 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1982 break; 1983 case HCI_INIT_HOST_BUFFER_SIZE: 1984 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1985 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1986 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1987 break; 1988 #endif 1989 1990 case HCI_INIT_SET_EVENT_MASK: 1991 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1992 if (hci_le_supported()){ 1993 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1994 } else { 1995 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1996 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1997 } 1998 break; 1999 2000 case HCI_INIT_SET_EVENT_MASK_2: 2001 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2002 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2003 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2004 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2005 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2006 // Encryption Change Event v2 - bit 25 2007 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2008 break; 2009 } 2010 2011 #ifdef ENABLE_CLASSIC 2012 /* fall through */ 2013 2014 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2015 if (hci_classic_supported() && gap_ssp_supported()){ 2016 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2017 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2018 break; 2019 } 2020 2021 /* fall through */ 2022 2023 case HCI_INIT_WRITE_INQUIRY_MODE: 2024 if (hci_classic_supported()){ 2025 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2026 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2027 break; 2028 } 2029 2030 /* fall through */ 2031 2032 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2033 // skip write secure connections host support if not supported or disabled 2034 if (hci_classic_supported() && hci_stack->secure_connections_enable 2035 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2036 hci_stack->secure_connections_active = true; 2037 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2038 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2039 break; 2040 } 2041 2042 /* fall through */ 2043 2044 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2045 // skip set min encryption key size 2046 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2047 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2048 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2049 break; 2050 } 2051 2052 #ifdef ENABLE_SCO_OVER_HCI 2053 /* fall through */ 2054 2055 // only sent if ENABLE_SCO_OVER_HCI is defined 2056 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2057 // skip write synchronous flow control if not supported 2058 if (hci_classic_supported() 2059 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2060 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2061 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2062 break; 2063 } 2064 /* fall through */ 2065 2066 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2067 // skip write default erroneous data reporting if not supported 2068 if (hci_classic_supported() 2069 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2070 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2071 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2072 break; 2073 } 2074 #endif 2075 2076 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2077 /* fall through */ 2078 2079 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2080 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2081 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2082 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2083 #ifdef ENABLE_SCO_OVER_HCI 2084 log_info("BCM: Route SCO data via HCI transport"); 2085 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2086 #endif 2087 #ifdef ENABLE_SCO_OVER_PCM 2088 log_info("BCM: Route SCO data via PCM interface"); 2089 #ifdef ENABLE_BCM_PCM_WBS 2090 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2091 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2092 #else 2093 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2094 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2095 #endif 2096 #endif 2097 break; 2098 } 2099 #endif 2100 2101 #ifdef ENABLE_SCO_OVER_PCM 2102 /* fall through */ 2103 2104 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2105 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2106 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2107 log_info("BCM: Config PCM interface for I2S"); 2108 #ifdef ENABLE_BCM_PCM_WBS 2109 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2110 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2111 #else 2112 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2113 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2114 #endif 2115 break; 2116 } 2117 #endif 2118 #endif 2119 2120 #ifdef ENABLE_BLE 2121 /* fall through */ 2122 2123 // LE INIT 2124 case HCI_INIT_LE_READ_BUFFER_SIZE: 2125 if (hci_le_supported()){ 2126 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2127 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2128 hci_send_cmd(&hci_le_read_buffer_size_v2); 2129 } else { 2130 hci_send_cmd(&hci_le_read_buffer_size); 2131 } 2132 break; 2133 } 2134 2135 /* fall through */ 2136 2137 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2138 // skip write le host if not supported (e.g. on LE only EM9301) 2139 if (hci_le_supported() 2140 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2141 // LE Supported Host = 1, Simultaneous Host = 0 2142 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2143 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2144 break; 2145 } 2146 2147 /* fall through */ 2148 2149 case HCI_INIT_LE_SET_EVENT_MASK: 2150 if (hci_le_supported()){ 2151 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2152 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2153 break; 2154 } 2155 #endif 2156 2157 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2158 /* fall through */ 2159 2160 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2161 if (hci_le_supported() 2162 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2163 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2164 hci_send_cmd(&hci_le_read_maximum_data_length); 2165 break; 2166 } 2167 2168 /* fall through */ 2169 2170 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2171 if (hci_le_supported() 2172 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2173 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2174 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2175 break; 2176 } 2177 #endif 2178 2179 #ifdef ENABLE_LE_CENTRAL 2180 /* fall through */ 2181 2182 case HCI_INIT_READ_WHITE_LIST_SIZE: 2183 if (hci_le_supported()){ 2184 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2185 hci_send_cmd(&hci_le_read_white_list_size); 2186 break; 2187 } 2188 2189 #endif 2190 2191 #ifdef ENABLE_LE_PERIPHERAL 2192 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2193 /* fall through */ 2194 2195 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2196 if (hci_extended_advertising_supported()){ 2197 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2198 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2199 break; 2200 } 2201 #endif 2202 #endif 2203 /* fall through */ 2204 2205 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2206 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2207 if (hci_le_supported()) { 2208 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2209 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2210 break; 2211 } 2212 #endif 2213 2214 /* fall through */ 2215 2216 case HCI_INIT_DONE: 2217 hci_stack->substate = HCI_INIT_DONE; 2218 // main init sequence complete 2219 #ifdef ENABLE_CLASSIC 2220 // check if initial Classic GAP Tasks are completed 2221 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2222 hci_run_gap_tasks_classic(); 2223 break; 2224 } 2225 #endif 2226 #ifdef ENABLE_BLE 2227 #ifdef ENABLE_LE_CENTRAL 2228 // check if initial LE GAP Tasks are completed 2229 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2230 hci_run_general_gap_le(); 2231 break; 2232 } 2233 #endif 2234 #endif 2235 hci_init_done(); 2236 break; 2237 2238 default: 2239 return; 2240 } 2241 } 2242 2243 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2244 bool command_completed = false; 2245 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2246 uint16_t opcode = little_endian_read_16(packet,3); 2247 if (opcode == hci_stack->last_cmd_opcode){ 2248 command_completed = true; 2249 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2250 } else { 2251 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2252 } 2253 } 2254 2255 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2256 uint8_t status = packet[2]; 2257 uint16_t opcode = little_endian_read_16(packet,4); 2258 if (opcode == hci_stack->last_cmd_opcode){ 2259 if (status){ 2260 command_completed = true; 2261 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2262 } else { 2263 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2264 } 2265 } else { 2266 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2267 } 2268 } 2269 #ifndef HAVE_HOST_CONTROLLER_API 2270 // Vendor == CSR 2271 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2272 // TODO: track actual command 2273 command_completed = true; 2274 } 2275 2276 // Vendor == Toshiba 2277 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2278 // TODO: track actual command 2279 command_completed = true; 2280 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2281 hci_stack->num_cmd_packets = 1; 2282 } 2283 #endif 2284 2285 return command_completed; 2286 } 2287 2288 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2289 2290 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2291 2292 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2293 2294 #ifndef HAVE_HOST_CONTROLLER_API 2295 2296 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2297 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2298 // 2299 // HCI Reset 2300 // Timeout 100 ms 2301 // HCI Reset 2302 // Command Complete Reset 2303 // HCI Read Local Version Information 2304 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2305 // hang... 2306 // 2307 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2308 if (!command_completed 2309 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2310 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2311 2312 uint16_t opcode = little_endian_read_16(packet,3); 2313 if (opcode == hci_reset.opcode){ 2314 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2315 return; 2316 } 2317 } 2318 2319 // CSR & H5 2320 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2321 if (!command_completed 2322 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2323 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2324 2325 uint16_t opcode = little_endian_read_16(packet,3); 2326 if (opcode == hci_reset.opcode){ 2327 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2328 return; 2329 } 2330 } 2331 2332 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2333 // fix: Correct substate and behave as command below 2334 if (command_completed){ 2335 switch (hci_stack->substate){ 2336 case HCI_INIT_SEND_RESET: 2337 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2338 break; 2339 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2340 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2341 break; 2342 default: 2343 break; 2344 } 2345 } 2346 2347 #endif 2348 2349 if (!command_completed) return; 2350 2351 bool need_baud_change = false; 2352 bool need_addr_change = false; 2353 2354 #ifndef HAVE_HOST_CONTROLLER_API 2355 need_baud_change = hci_stack->config 2356 && hci_stack->chipset 2357 && hci_stack->chipset->set_baudrate_command 2358 && hci_stack->hci_transport->set_baudrate 2359 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2360 2361 need_addr_change = hci_stack->custom_bd_addr_set 2362 && hci_stack->chipset 2363 && hci_stack->chipset->set_bd_addr_command; 2364 #endif 2365 2366 switch(hci_stack->substate){ 2367 2368 #ifndef HAVE_HOST_CONTROLLER_API 2369 case HCI_INIT_SEND_RESET: 2370 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2371 // fix: just correct substate and behave as command below 2372 2373 /* fall through */ 2374 #endif 2375 2376 case HCI_INIT_W4_SEND_RESET: 2377 btstack_run_loop_remove_timer(&hci_stack->timeout); 2378 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2379 return; 2380 2381 #ifndef HAVE_HOST_CONTROLLER_API 2382 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2383 // for STLC2500D, baud rate change already happened. 2384 // for others, baud rate gets changed now 2385 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2386 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2387 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2388 hci_stack->hci_transport->set_baudrate(baud_rate); 2389 } 2390 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2391 return; 2392 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2393 btstack_run_loop_remove_timer(&hci_stack->timeout); 2394 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2395 return; 2396 case HCI_INIT_W4_CUSTOM_INIT: 2397 // repeat custom init 2398 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2399 return; 2400 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2401 // repeat custom init 2402 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2403 return; 2404 #endif 2405 2406 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2407 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2408 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2409 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2410 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2411 return; 2412 } 2413 if (need_addr_change){ 2414 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2415 return; 2416 } 2417 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2418 return; 2419 #ifndef HAVE_HOST_CONTROLLER_API 2420 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2421 if (need_baud_change){ 2422 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2423 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2424 hci_stack->hci_transport->set_baudrate(baud_rate); 2425 } 2426 if (need_addr_change){ 2427 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2428 return; 2429 } 2430 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2431 return; 2432 case HCI_INIT_W4_SET_BD_ADDR: 2433 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2434 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2435 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2436 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2437 return; 2438 } 2439 // skipping st warm boot 2440 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2441 return; 2442 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2443 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2444 return; 2445 #endif 2446 2447 case HCI_INIT_DONE: 2448 // set state if we came here by fall through 2449 hci_stack->substate = HCI_INIT_DONE; 2450 return; 2451 2452 default: 2453 break; 2454 } 2455 hci_initializing_next_state(); 2456 } 2457 2458 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2459 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2460 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2461 // check if we have been aware of the HCI connection 2462 switch (conn->state){ 2463 case SENT_CREATE_CONNECTION: 2464 case RECEIVED_CONNECTION_REQUEST: 2465 case ACCEPTED_CONNECTION_REQUEST: 2466 break; 2467 default: 2468 return; 2469 } 2470 2471 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2472 bd_addr_t bd_address; 2473 (void)memcpy(&bd_address, conn->address, 6); 2474 2475 #ifdef ENABLE_CLASSIC 2476 // cache needed data 2477 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2478 #endif 2479 2480 // connection failed, remove entry 2481 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2482 btstack_memory_hci_connection_free( conn ); 2483 2484 #ifdef ENABLE_CLASSIC 2485 // notify client if dedicated bonding 2486 if (notify_dedicated_bonding_failed){ 2487 log_info("hci notify_dedicated_bonding_failed"); 2488 hci_emit_dedicated_bonding_result(bd_address, status); 2489 } 2490 2491 // if authentication error, also delete link key 2492 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2493 gap_drop_link_key_for_bd_addr(bd_address); 2494 } 2495 #else 2496 UNUSED(status); 2497 #endif 2498 } 2499 2500 #ifdef ENABLE_CLASSIC 2501 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2502 // SSP Controller 2503 if (features[6] & (1 << 3)){ 2504 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2505 } 2506 // eSCO 2507 if (features[3] & (1<<7)){ 2508 conn->remote_supported_features[0] |= 1; 2509 } 2510 // Extended features 2511 if (features[7] & (1<<7)){ 2512 conn->remote_supported_features[0] |= 2; 2513 } 2514 } 2515 2516 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2517 // SSP Host 2518 if (features[0] & (1 << 0)){ 2519 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2520 } 2521 // SC Host 2522 if (features[0] & (1 << 3)){ 2523 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2524 } 2525 } 2526 2527 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2528 // SC Controller 2529 if (features[1] & (1 << 0)){ 2530 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2531 } 2532 } 2533 2534 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2535 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2536 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2537 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2538 if (conn->bonding_flags & BONDING_DEDICATED){ 2539 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2540 } 2541 } 2542 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2543 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2544 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2545 } 2546 2547 #endif 2548 2549 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2550 // handle BT initialization 2551 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2552 hci_initializing_event_handler(packet, size); 2553 } 2554 2555 // help with BT sleep 2556 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2557 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2558 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2559 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2560 hci_initializing_next_state(); 2561 } 2562 } 2563 2564 #ifdef ENABLE_CLASSIC 2565 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2566 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2567 conn->encryption_key_size = encryption_key_size; 2568 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2569 2570 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2571 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2572 conn->bonding_flags &= ~BONDING_DEDICATED; 2573 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2574 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2575 return; 2576 } 2577 2578 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2579 conn->requested_security_level = LEVEL_0; 2580 hci_emit_security_level(conn->con_handle, security_level); 2581 return; 2582 } 2583 2584 // Request remote features if not already done 2585 hci_trigger_remote_features_for_connection(conn); 2586 2587 // Request Authentication if not already done 2588 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2589 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2590 } 2591 #endif 2592 2593 static void hci_store_local_supported_commands(const uint8_t * packet){ 2594 // create mapping table 2595 #define X(name, offset, bit) { offset, bit }, 2596 static struct { 2597 uint8_t byte_offset; 2598 uint8_t bit_position; 2599 } supported_hci_commands_map [] = { 2600 SUPPORTED_HCI_COMMANDS 2601 }; 2602 #undef X 2603 2604 // create names for debug purposes 2605 #ifdef ENABLE_LOG_DEBUG 2606 #define X(name, offset, bit) #name, 2607 static const char * command_names[] = { 2608 SUPPORTED_HCI_COMMANDS 2609 }; 2610 #undef X 2611 #endif 2612 2613 hci_stack->local_supported_commands = 0; 2614 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2615 uint16_t i; 2616 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2617 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2618 #ifdef ENABLE_LOG_DEBUG 2619 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); 2620 #else 2621 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2622 #endif 2623 hci_stack->local_supported_commands |= (1LU << i); 2624 } 2625 } 2626 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2627 } 2628 2629 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2630 UNUSED(size); 2631 2632 uint16_t manufacturer; 2633 #ifdef ENABLE_CLASSIC 2634 hci_con_handle_t handle; 2635 hci_connection_t * conn; 2636 #endif 2637 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2638 uint8_t status; 2639 #endif 2640 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2641 le_audio_cig_t * cig; 2642 #endif 2643 2644 // get num cmd packets - limit to 1 to reduce complexity 2645 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2646 2647 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2648 switch (opcode){ 2649 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2650 if (packet[5]) break; 2651 // terminate, name 248 chars 2652 packet[6+248] = 0; 2653 log_info("local name: %s", &packet[6]); 2654 break; 2655 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2656 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2657 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2658 uint16_t acl_len = little_endian_read_16(packet, 6); 2659 uint16_t sco_len = packet[8]; 2660 2661 // determine usable ACL/SCO payload size 2662 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2663 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2664 2665 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2666 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2667 2668 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2669 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2670 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2671 } 2672 break; 2673 case HCI_OPCODE_HCI_READ_RSSI: 2674 if (packet[5] == ERROR_CODE_SUCCESS){ 2675 uint8_t event[5]; 2676 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2677 event[1] = 3; 2678 (void)memcpy(&event[2], &packet[6], 3); 2679 hci_emit_event(event, sizeof(event), 1); 2680 } 2681 break; 2682 #ifdef ENABLE_BLE 2683 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2684 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2685 hci_stack->le_iso_packets_total_num = packet[11]; 2686 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2687 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2688 2689 /* fall through */ 2690 2691 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2692 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2693 hci_stack->le_acl_packets_total_num = packet[8]; 2694 // determine usable ACL payload size 2695 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2696 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2697 } 2698 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); 2699 break; 2700 #endif 2701 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2702 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2703 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2704 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2705 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); 2706 break; 2707 #endif 2708 #ifdef ENABLE_LE_CENTRAL 2709 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2710 hci_stack->le_whitelist_capacity = packet[6]; 2711 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2712 break; 2713 #endif 2714 #ifdef ENABLE_LE_PERIPHERAL 2715 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2716 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2717 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2718 break; 2719 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2720 if (hci_stack->le_advertising_set_in_current_command != 0) { 2721 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2722 hci_stack->le_advertising_set_in_current_command = 0; 2723 if (advertising_set == NULL) break; 2724 uint8_t adv_status = packet[6]; 2725 uint8_t tx_power = packet[7]; 2726 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 }; 2727 if (adv_status == 0){ 2728 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2729 } 2730 hci_emit_event(event, sizeof(event), 1); 2731 } 2732 break; 2733 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2734 if (hci_stack->le_advertising_set_in_current_command != 0) { 2735 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2736 hci_stack->le_advertising_set_in_current_command = 0; 2737 if (advertising_set == NULL) break; 2738 uint8_t adv_status = packet[5]; 2739 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2740 if (adv_status == 0){ 2741 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2742 } 2743 hci_emit_event(event, sizeof(event), 1); 2744 } 2745 break; 2746 #endif 2747 #endif 2748 case HCI_OPCODE_HCI_READ_BD_ADDR: 2749 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2750 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)); 2751 #ifdef ENABLE_CLASSIC 2752 if (hci_stack->link_key_db){ 2753 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2754 } 2755 #endif 2756 break; 2757 #ifdef ENABLE_CLASSIC 2758 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2759 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2760 break; 2761 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2762 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2763 if (status == ERROR_CODE_SUCCESS) { 2764 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2765 } else { 2766 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2767 } 2768 break; 2769 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2770 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2771 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2772 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2773 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2774 hci_emit_event(event, sizeof(event), 1); 2775 } 2776 break; 2777 #endif 2778 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2779 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2780 2781 #ifdef ENABLE_CLASSIC 2782 // determine usable ACL packet types based on host buffer size and supported features 2783 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2784 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2785 #endif 2786 // Classic/LE 2787 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2788 break; 2789 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2790 manufacturer = little_endian_read_16(packet, 10); 2791 // map Cypress & Infineon to Broadcom 2792 switch (manufacturer){ 2793 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2794 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2795 log_info("Treat Cypress/Infineon as Broadcom"); 2796 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2797 little_endian_store_16(packet, 10, manufacturer); 2798 break; 2799 default: 2800 break; 2801 } 2802 hci_stack->manufacturer = manufacturer; 2803 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2804 break; 2805 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2806 hci_store_local_supported_commands(packet); 2807 break; 2808 #ifdef ENABLE_CLASSIC 2809 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2810 if (packet[5]) return; 2811 hci_stack->synchronous_flow_control_enabled = 1; 2812 break; 2813 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2814 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2815 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2816 conn = hci_connection_for_handle(handle); 2817 if (conn != NULL) { 2818 uint8_t key_size = 0; 2819 if (status == 0){ 2820 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2821 log_info("Handle %04x key Size: %u", handle, key_size); 2822 } else { 2823 key_size = 1; 2824 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2825 } 2826 hci_handle_read_encryption_key_size_complete(conn, key_size); 2827 } 2828 break; 2829 // assert pairing complete event is emitted. 2830 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2831 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2832 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2833 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2834 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2835 // lookup connection by gap pairing addr 2836 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2837 if (conn == NULL) break; 2838 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2839 break; 2840 2841 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2842 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2843 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2844 uint8_t event[67]; 2845 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2846 event[1] = 65; 2847 (void)memset(&event[2], 0, 65); 2848 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2849 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2850 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2851 event[2] = 3; 2852 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2853 } else { 2854 event[2] = 1; 2855 } 2856 } 2857 hci_emit_event(event, sizeof(event), 0); 2858 break; 2859 } 2860 2861 // note: only needed if user does not provide OOB data 2862 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2863 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2864 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2865 if (conn == NULL) break; 2866 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2867 break; 2868 #endif 2869 #endif 2870 #ifdef ENABLE_BLE 2871 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2872 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2873 // lookup CIG 2874 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2875 if (cig != NULL){ 2876 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2877 uint8_t i = 0; 2878 if (status == ERROR_CODE_SUCCESS){ 2879 // assign CIS handles to pre-allocated CIS 2880 btstack_linked_list_iterator_t it; 2881 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2882 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2883 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2884 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2885 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2886 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2887 iso_stream->con_handle = cis_handle; 2888 cig->cis_con_handles[i] = cis_handle; 2889 i++; 2890 } 2891 } 2892 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2893 hci_emit_cig_created(cig, status); 2894 } else { 2895 hci_emit_cig_created(cig, status); 2896 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2897 } 2898 } 2899 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2900 break; 2901 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2902 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2903 if (status != ERROR_CODE_SUCCESS){ 2904 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2905 } 2906 break; 2907 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2908 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2909 if (status != ERROR_CODE_SUCCESS){ 2910 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2911 } 2912 break; 2913 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2914 // lookup BIG by state 2915 btstack_linked_list_iterator_t it; 2916 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2917 while (btstack_linked_list_iterator_has_next(&it)) { 2918 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2919 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2920 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2921 if (status == ERROR_CODE_SUCCESS){ 2922 big->state_vars.next_bis++; 2923 if (big->state_vars.next_bis == big->num_bis){ 2924 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2925 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2926 } else { 2927 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2928 } 2929 } else { 2930 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2931 big->state_vars.status = status; 2932 } 2933 return; 2934 } 2935 } 2936 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2937 while (btstack_linked_list_iterator_has_next(&it)) { 2938 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2939 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2940 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2941 if (status == ERROR_CODE_SUCCESS){ 2942 big_sync->state_vars.next_bis++; 2943 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2944 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2945 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2946 } else { 2947 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2948 } 2949 } else { 2950 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2951 big_sync->state_vars.status = status; 2952 } 2953 return; 2954 } 2955 } 2956 // Lookup CIS via active group operation 2957 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2958 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2959 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2960 2961 // lookup CIS by state 2962 btstack_linked_list_iterator_t it; 2963 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2964 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2965 while (btstack_linked_list_iterator_has_next(&it)){ 2966 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2967 handle = iso_stream->con_handle; 2968 switch (iso_stream->state){ 2969 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2970 if (status != ERROR_CODE_SUCCESS){ 2971 hci_iso_stream_finalize(iso_stream); 2972 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2973 break; 2974 } 2975 if (iso_stream->max_sdu_c_to_p > 0){ 2976 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2977 } else { 2978 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2979 } 2980 break; 2981 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2982 if (status != ERROR_CODE_SUCCESS){ 2983 hci_iso_stream_finalize(iso_stream); 2984 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2985 break; 2986 } 2987 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2988 break; 2989 default: 2990 break; 2991 } 2992 } 2993 } else { 2994 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2995 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2996 if (cig != NULL) { 2997 // emit cis created if all ISO Paths have been created 2998 // assume we are central 2999 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3000 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3001 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3002 // if outgoing has been setup, or incoming was setup but outgoing not required 3003 if ((cis_direction == 1) || (outgoing_needed == false)){ 3004 hci_emit_cis_created(cig->cig_id, cig->cis_con_handles[cis_index], status); 3005 } 3006 // next state 3007 cig->state_vars.next_cis++; 3008 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3009 } 3010 } 3011 } 3012 break; 3013 } 3014 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3015 // lookup BIG by state 3016 btstack_linked_list_iterator_t it; 3017 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3018 while (btstack_linked_list_iterator_has_next(&it)) { 3019 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3020 uint8_t big_handle = big_sync->big_handle; 3021 switch (big_sync->state){ 3022 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3023 btstack_linked_list_iterator_remove(&it); 3024 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3025 return; 3026 default: 3027 btstack_linked_list_iterator_remove(&it); 3028 hci_emit_big_sync_stopped(big_handle); 3029 return; 3030 } 3031 } 3032 break; 3033 } 3034 #endif 3035 #endif 3036 default: 3037 break; 3038 } 3039 } 3040 3041 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3042 UNUSED(size); 3043 3044 // get num cmd packets - limit to 1 to reduce complexity 3045 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3046 3047 // get opcode and command status 3048 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3049 3050 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3051 uint8_t status = hci_event_command_status_get_status(packet); 3052 #endif 3053 3054 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3055 bd_addr_type_t addr_type; 3056 bd_addr_t addr; 3057 #endif 3058 3059 switch (opcode){ 3060 #ifdef ENABLE_CLASSIC 3061 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3062 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3063 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3064 #endif 3065 #ifdef ENABLE_LE_CENTRAL 3066 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3067 #endif 3068 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3069 addr_type = hci_stack->outgoing_addr_type; 3070 memcpy(addr, hci_stack->outgoing_addr, 6); 3071 3072 // reset outgoing address info 3073 memset(hci_stack->outgoing_addr, 0, 6); 3074 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3075 3076 // on error 3077 if (status != ERROR_CODE_SUCCESS){ 3078 #ifdef ENABLE_LE_CENTRAL 3079 if (hci_is_le_connection_type(addr_type)){ 3080 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3081 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3082 } 3083 #endif 3084 // error => outgoing connection failed 3085 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3086 if (conn != NULL){ 3087 hci_handle_connection_failed(conn, status); 3088 } 3089 } 3090 break; 3091 #endif 3092 #ifdef ENABLE_CLASSIC 3093 case HCI_OPCODE_HCI_INQUIRY: 3094 if (status == ERROR_CODE_SUCCESS) { 3095 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3096 } else { 3097 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3098 } 3099 break; 3100 #endif 3101 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3102 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3103 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3104 if (status == ERROR_CODE_SUCCESS){ 3105 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3106 } else { 3107 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3108 } 3109 break; 3110 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3111 default: 3112 break; 3113 } 3114 } 3115 3116 #ifdef ENABLE_BLE 3117 static void event_handle_le_connection_complete(const uint8_t * packet){ 3118 bd_addr_t addr; 3119 bd_addr_type_t addr_type; 3120 hci_connection_t * conn; 3121 3122 // Connection management 3123 reverse_bd_addr(&packet[8], addr); 3124 addr_type = (bd_addr_type_t)packet[7]; 3125 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3126 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3127 3128 #ifdef ENABLE_LE_CENTRAL 3129 // handle error: error is reported only to the initiator -> outgoing connection 3130 if (packet[3]){ 3131 3132 // handle cancelled outgoing connection 3133 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3134 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3135 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3136 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3137 // reset state 3138 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3139 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3140 // get outgoing connection conn struct for direct connect 3141 conn = gap_get_outgoing_connection(); 3142 } 3143 3144 // outgoing le connection establishment is done 3145 if (conn){ 3146 // remove entry 3147 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3148 btstack_memory_hci_connection_free( conn ); 3149 } 3150 return; 3151 } 3152 #endif 3153 3154 // on success, both hosts receive connection complete event 3155 if (packet[6] == HCI_ROLE_MASTER){ 3156 #ifdef ENABLE_LE_CENTRAL 3157 // if we're master on an le connection, it was an outgoing connection and we're done with it 3158 // note: no hci_connection_t object exists yet for connect with whitelist 3159 if (hci_is_le_connection_type(addr_type)){ 3160 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3161 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3162 } 3163 #endif 3164 } else { 3165 #ifdef ENABLE_LE_PERIPHERAL 3166 // if we're slave, it was an incoming connection, advertisements have stopped 3167 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3168 #endif 3169 } 3170 3171 // LE connections are auto-accepted, so just create a connection if there isn't one already 3172 if (!conn){ 3173 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3174 } 3175 3176 // no memory, sorry. 3177 if (!conn){ 3178 return; 3179 } 3180 3181 conn->state = OPEN; 3182 conn->role = packet[6]; 3183 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3184 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3185 3186 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3187 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3188 3189 #ifdef ENABLE_LE_PERIPHERAL 3190 if (packet[6] == HCI_ROLE_SLAVE){ 3191 hci_update_advertisements_enabled_for_current_roles(); 3192 } 3193 #endif 3194 3195 // init unenhanced att bearer mtu 3196 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3197 conn->att_connection.mtu_exchanged = false; 3198 3199 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3200 3201 // restart timer 3202 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3203 // btstack_run_loop_add_timer(&conn->timeout); 3204 3205 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3206 3207 hci_emit_nr_connections_changed(); 3208 } 3209 #endif 3210 3211 #ifdef ENABLE_CLASSIC 3212 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){ 3213 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3214 // LEVEL_4 is tested by l2cap 3215 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3216 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3217 if (level >= LEVEL_3){ 3218 // MITM not possible without keyboard or display 3219 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3220 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3221 3222 // MITM possible if one side has keyboard and the other has keyboard or display 3223 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3224 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3225 3226 // MITM not possible if one side has only display and other side has no keyboard 3227 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3228 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3229 } 3230 // LEVEL 2 requires SSP, which is a given 3231 return true; 3232 } 3233 3234 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3235 // get requested security level 3236 gap_security_level_t requested_security_level = conn->requested_security_level; 3237 if (hci_stack->gap_secure_connections_only_mode){ 3238 requested_security_level = LEVEL_4; 3239 } 3240 3241 // assess security: LEVEL 4 requires SC 3242 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3243 if ((requested_security_level == LEVEL_4) && 3244 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3245 !hci_remote_sc_enabled(conn)){ 3246 log_info("Level 4 required, but SC not supported -> abort"); 3247 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3248 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3249 return; 3250 } 3251 3252 // assess security based on io capabilities 3253 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3254 // responder: fully validate io caps of both sides as well as OOB data 3255 bool security_possible = false; 3256 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3257 3258 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3259 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3260 // so we merge the OOB data availability 3261 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3262 if (conn->classic_oob_c_192 != NULL){ 3263 have_oob_data |= 1; 3264 } 3265 if (conn->classic_oob_c_256 != NULL){ 3266 have_oob_data |= 2; 3267 } 3268 // for up to Level 3, either P-192 as well as P-256 will do 3269 // 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 3270 // if remote does not SC, we should not receive P-256 data either 3271 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3272 security_possible = true; 3273 } 3274 // for Level 4, P-256 is needed 3275 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3276 security_possible = true; 3277 } 3278 #endif 3279 3280 if (security_possible == false){ 3281 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3282 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3283 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3284 return; 3285 } 3286 } else { 3287 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3288 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3289 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3290 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3291 log_info("Level 3+ required, but no input/output -> abort"); 3292 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3293 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3294 return; 3295 } 3296 #endif 3297 #endif 3298 } 3299 3300 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3301 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3302 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3303 } else { 3304 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3305 } 3306 #endif 3307 } 3308 3309 #endif 3310 3311 static void event_handler(uint8_t *packet, uint16_t size){ 3312 3313 uint16_t event_length = packet[1]; 3314 3315 // assert packet is complete 3316 if (size != (event_length + 2u)){ 3317 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3318 return; 3319 } 3320 3321 hci_con_handle_t handle; 3322 hci_connection_t * conn; 3323 int i; 3324 3325 #ifdef ENABLE_CLASSIC 3326 hci_link_type_t link_type; 3327 bd_addr_t addr; 3328 bd_addr_type_t addr_type; 3329 #endif 3330 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3331 hci_iso_stream_t * iso_stream; 3332 le_audio_big_t * big; 3333 le_audio_big_sync_t * big_sync; 3334 #endif 3335 3336 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3337 3338 switch (hci_event_packet_get_type(packet)) { 3339 3340 case HCI_EVENT_COMMAND_COMPLETE: 3341 handle_command_complete_event(packet, size); 3342 break; 3343 3344 case HCI_EVENT_COMMAND_STATUS: 3345 handle_command_status_event(packet, size); 3346 break; 3347 3348 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3349 if (size < 3) return; 3350 uint16_t num_handles = packet[2]; 3351 if (size != (3u + num_handles * 4u)) return; 3352 #ifdef ENABLE_CLASSIC 3353 bool notify_sco = false; 3354 #endif 3355 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3356 bool notify_iso = false; 3357 #endif 3358 uint16_t offset = 3; 3359 for (i=0; i<num_handles;i++){ 3360 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3361 offset += 2u; 3362 uint16_t num_packets = little_endian_read_16(packet, offset); 3363 offset += 2u; 3364 3365 conn = hci_connection_for_handle(handle); 3366 if (conn != NULL) { 3367 3368 if (conn->num_packets_sent >= num_packets) { 3369 conn->num_packets_sent -= num_packets; 3370 } else { 3371 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3372 conn->num_packets_sent = 0; 3373 } 3374 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3375 #ifdef ENABLE_CLASSIC 3376 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3377 notify_sco = true; 3378 } 3379 #endif 3380 } 3381 3382 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3383 hci_controller_dump_packets(); 3384 #endif 3385 3386 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3387 if (conn == NULL){ 3388 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3389 if (iso_stream != NULL){ 3390 if (iso_stream->num_packets_sent >= num_packets) { 3391 iso_stream->num_packets_sent -= num_packets; 3392 } else { 3393 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3394 iso_stream->num_packets_sent = 0; 3395 } 3396 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3397 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3398 if (big != NULL){ 3399 big->num_completed_timestamp_current_valid = true; 3400 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3401 } 3402 } 3403 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3404 num_packets, handle, iso_stream->num_packets_sent); 3405 notify_iso = true; 3406 } 3407 } 3408 #endif 3409 } 3410 3411 #ifdef ENABLE_CLASSIC 3412 if (notify_sco){ 3413 hci_notify_if_sco_can_send_now(); 3414 } 3415 #endif 3416 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3417 if (notify_iso){ 3418 hci_iso_notify_can_send_now(); 3419 } 3420 #endif 3421 break; 3422 } 3423 3424 #ifdef ENABLE_CLASSIC 3425 case HCI_EVENT_FLUSH_OCCURRED: 3426 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3427 handle = hci_event_flush_occurred_get_handle(packet); 3428 conn = hci_connection_for_handle(handle); 3429 if (conn) { 3430 log_info("Flush occurred, disconnect 0x%04x", handle); 3431 conn->state = SEND_DISCONNECT; 3432 } 3433 break; 3434 3435 case HCI_EVENT_INQUIRY_COMPLETE: 3436 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3437 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3438 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3439 hci_emit_event(event, sizeof(event), 1); 3440 } 3441 break; 3442 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3443 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3444 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3445 } 3446 break; 3447 case HCI_EVENT_CONNECTION_REQUEST: 3448 reverse_bd_addr(&packet[2], addr); 3449 link_type = (hci_link_type_t) packet[11]; 3450 3451 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3452 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3453 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3454 bd_addr_copy(hci_stack->decline_addr, addr); 3455 break; 3456 } 3457 3458 if (hci_stack->gap_classic_accept_callback != NULL){ 3459 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3460 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3461 bd_addr_copy(hci_stack->decline_addr, addr); 3462 break; 3463 } 3464 } 3465 3466 // TODO: eval COD 8-10 3467 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3468 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3469 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3470 if (!conn) { 3471 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3472 } 3473 if (!conn) { 3474 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3475 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3476 bd_addr_copy(hci_stack->decline_addr, addr); 3477 hci_run(); 3478 // avoid event to higher layer 3479 return; 3480 } 3481 conn->role = HCI_ROLE_SLAVE; 3482 conn->state = RECEIVED_CONNECTION_REQUEST; 3483 // store info about eSCO 3484 if (link_type == HCI_LINK_TYPE_ESCO){ 3485 conn->remote_supported_features[0] |= 1; 3486 } 3487 hci_run(); 3488 break; 3489 3490 case HCI_EVENT_CONNECTION_COMPLETE: 3491 // Connection management 3492 reverse_bd_addr(&packet[5], addr); 3493 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3494 addr_type = BD_ADDR_TYPE_ACL; 3495 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3496 if (conn) { 3497 switch (conn->state){ 3498 // expected states 3499 case ACCEPTED_CONNECTION_REQUEST: 3500 case SENT_CREATE_CONNECTION: 3501 break; 3502 // unexpected state -> ignore 3503 default: 3504 // don't forward event to app 3505 return; 3506 } 3507 if (!packet[2]){ 3508 conn->state = OPEN; 3509 conn->con_handle = little_endian_read_16(packet, 3); 3510 3511 // trigger write supervision timeout if we're master 3512 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3513 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3514 } 3515 3516 // trigger write automatic flush timeout 3517 if (hci_stack->automatic_flush_timeout != 0){ 3518 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3519 } 3520 3521 // restart timer 3522 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3523 btstack_run_loop_add_timer(&conn->timeout); 3524 3525 // trigger remote features for dedicated bonding 3526 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3527 hci_trigger_remote_features_for_connection(conn); 3528 } 3529 3530 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3531 3532 hci_emit_nr_connections_changed(); 3533 } else { 3534 // connection failed 3535 hci_handle_connection_failed(conn, packet[2]); 3536 } 3537 } 3538 break; 3539 3540 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3541 reverse_bd_addr(&packet[5], addr); 3542 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3543 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3544 btstack_assert(conn != NULL); 3545 3546 if (packet[2] != ERROR_CODE_SUCCESS){ 3547 // connection failed, remove entry 3548 hci_handle_connection_failed(conn, packet[2]); 3549 break; 3550 } 3551 3552 conn->state = OPEN; 3553 conn->con_handle = little_endian_read_16(packet, 3); 3554 3555 #ifdef ENABLE_SCO_OVER_HCI 3556 // update SCO 3557 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3558 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3559 } 3560 // trigger can send now 3561 if (hci_have_usb_transport()){ 3562 hci_stack->sco_can_send_now = true; 3563 } 3564 #endif 3565 #ifdef HAVE_SCO_TRANSPORT 3566 // configure sco transport 3567 if (hci_stack->sco_transport != NULL){ 3568 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3569 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3570 } 3571 #endif 3572 break; 3573 3574 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3575 handle = little_endian_read_16(packet, 3); 3576 conn = hci_connection_for_handle(handle); 3577 if (!conn) break; 3578 if (!packet[2]){ 3579 const uint8_t * features = &packet[5]; 3580 hci_handle_remote_features_page_0(conn, features); 3581 3582 // read extended features if possible 3583 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3584 && ((conn->remote_supported_features[0] & 2) != 0)) { 3585 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3586 break; 3587 } 3588 } 3589 hci_handle_remote_features_received(conn); 3590 break; 3591 3592 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3593 handle = little_endian_read_16(packet, 3); 3594 conn = hci_connection_for_handle(handle); 3595 if (!conn) break; 3596 // status = ok, page = 1 3597 if (!packet[2]) { 3598 uint8_t page_number = packet[5]; 3599 uint8_t maximum_page_number = packet[6]; 3600 const uint8_t * features = &packet[7]; 3601 bool done = false; 3602 switch (page_number){ 3603 case 1: 3604 hci_handle_remote_features_page_1(conn, features); 3605 if (maximum_page_number >= 2){ 3606 // get Secure Connections (Controller) from Page 2 if available 3607 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3608 } else { 3609 // otherwise, assume SC (Controller) == SC (Host) 3610 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3611 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3612 } 3613 done = true; 3614 } 3615 break; 3616 case 2: 3617 hci_handle_remote_features_page_2(conn, features); 3618 done = true; 3619 break; 3620 default: 3621 break; 3622 } 3623 if (!done) break; 3624 } 3625 hci_handle_remote_features_received(conn); 3626 break; 3627 3628 case HCI_EVENT_LINK_KEY_REQUEST: 3629 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3630 hci_event_link_key_request_get_bd_addr(packet, addr); 3631 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3632 if (!conn) break; 3633 3634 // lookup link key in db if not cached 3635 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3636 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3637 } 3638 3639 // response sent by hci_run() 3640 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3641 #endif 3642 break; 3643 3644 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3645 hci_event_link_key_request_get_bd_addr(packet, addr); 3646 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3647 if (!conn) break; 3648 3649 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3650 3651 // CVE-2020-26555: ignore NULL link key 3652 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3653 if (btstack_is_null(&packet[8], 16)) break; 3654 3655 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3656 // Change Connection Encryption keeps link key type 3657 if (link_key_type != CHANGED_COMBINATION_KEY){ 3658 conn->link_key_type = link_key_type; 3659 } 3660 3661 // cache link key. link keys stored in little-endian format for legacy reasons 3662 memcpy(&conn->link_key, &packet[8], 16); 3663 3664 // only store link key: 3665 // - if bondable enabled 3666 if (hci_stack->bondable == false) break; 3667 // - if security level sufficient 3668 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3669 // - for SSP, also check if remote side requested bonding as well 3670 if (conn->link_key_type != COMBINATION_KEY){ 3671 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3672 if (!remote_bonding){ 3673 break; 3674 } 3675 } 3676 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3677 break; 3678 } 3679 3680 case HCI_EVENT_PIN_CODE_REQUEST: 3681 hci_event_pin_code_request_get_bd_addr(packet, addr); 3682 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3683 if (!conn) break; 3684 3685 hci_pairing_started(conn, false); 3686 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3687 if (!hci_stack->bondable ){ 3688 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3689 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3690 hci_run(); 3691 return; 3692 } 3693 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3694 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3695 log_info("Level 4 required, but SC not supported -> abort"); 3696 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3697 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3698 hci_run(); 3699 return; 3700 } 3701 break; 3702 3703 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3704 hci_event_io_capability_response_get_bd_addr(packet, addr); 3705 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3706 if (!conn) break; 3707 3708 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3709 hci_pairing_started(conn, true); 3710 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3711 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3712 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3713 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3714 #endif 3715 break; 3716 3717 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3718 hci_event_io_capability_response_get_bd_addr(packet, addr); 3719 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3720 if (!conn) break; 3721 3722 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3723 hci_connection_timestamp(conn); 3724 hci_pairing_started(conn, true); 3725 break; 3726 3727 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3728 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3729 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3730 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3731 if (!conn) break; 3732 3733 hci_connection_timestamp(conn); 3734 3735 hci_pairing_started(conn, true); 3736 3737 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3738 break; 3739 #endif 3740 3741 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3742 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3743 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3744 if (!conn) break; 3745 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3746 if (hci_stack->ssp_auto_accept){ 3747 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3748 }; 3749 } else { 3750 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3751 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3752 // don't forward event to app 3753 hci_run(); 3754 return; 3755 } 3756 break; 3757 3758 case HCI_EVENT_USER_PASSKEY_REQUEST: 3759 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3760 if (hci_stack->ssp_auto_accept){ 3761 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3762 }; 3763 break; 3764 3765 case HCI_EVENT_MODE_CHANGE: 3766 handle = hci_event_mode_change_get_handle(packet); 3767 conn = hci_connection_for_handle(handle); 3768 if (!conn) break; 3769 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3770 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3771 break; 3772 #endif 3773 3774 case HCI_EVENT_ENCRYPTION_CHANGE: 3775 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3776 handle = hci_event_encryption_change_get_connection_handle(packet); 3777 conn = hci_connection_for_handle(handle); 3778 if (!conn) break; 3779 if (hci_event_encryption_change_get_status(packet) == 0u) { 3780 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3781 if (encryption_enabled){ 3782 if (hci_is_le_connection(conn)){ 3783 // For LE, we accept connection as encrypted 3784 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3785 } 3786 #ifdef ENABLE_CLASSIC 3787 else { 3788 3789 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3790 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3791 bool connected_uses_aes_ccm = encryption_enabled == 2; 3792 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3793 log_info("SC during pairing, but only E0 now -> abort"); 3794 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3795 break; 3796 } 3797 3798 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3799 if (connected_uses_aes_ccm){ 3800 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3801 } 3802 3803 #ifdef ENABLE_TESTING_SUPPORT 3804 // work around for issue with PTS dongle 3805 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3806 #endif 3807 // validate encryption key size 3808 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3809 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3810 // already got encryption key size 3811 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3812 } else { 3813 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3814 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3815 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3816 } else { 3817 // if not, pretend everything is perfect 3818 hci_handle_read_encryption_key_size_complete(conn, 16); 3819 } 3820 } 3821 } 3822 #endif 3823 } else { 3824 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3825 } 3826 } else { 3827 uint8_t status = hci_event_encryption_change_get_status(packet); 3828 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3829 conn->bonding_flags &= ~BONDING_DEDICATED; 3830 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3831 conn->bonding_status = status; 3832 } 3833 } 3834 3835 break; 3836 3837 #ifdef ENABLE_CLASSIC 3838 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3839 handle = hci_event_authentication_complete_get_connection_handle(packet); 3840 conn = hci_connection_for_handle(handle); 3841 if (!conn) break; 3842 3843 // clear authentication active flag 3844 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3845 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3846 3847 // authenticated only if auth status == 0 3848 if (hci_event_authentication_complete_get_status(packet) == 0){ 3849 // authenticated 3850 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3851 3852 // If not already encrypted, start encryption 3853 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3854 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3855 break; 3856 } 3857 } 3858 3859 // emit updated security level 3860 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3861 break; 3862 3863 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3864 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3865 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3866 if (!conn) break; 3867 3868 // treat successfully paired connection as authenticated 3869 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3870 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3871 } 3872 3873 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3874 break; 3875 #endif 3876 3877 // HCI_EVENT_DISCONNECTION_COMPLETE 3878 // has been split, to first notify stack before shutting connection down 3879 // see end of function, too. 3880 case HCI_EVENT_DISCONNECTION_COMPLETE: 3881 if (packet[2]) break; // status != 0 3882 handle = little_endian_read_16(packet, 3); 3883 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3884 if (hci_stack->acl_fragmentation_total_size > 0u) { 3885 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3886 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3887 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3888 hci_stack->acl_fragmentation_total_size = 0; 3889 hci_stack->acl_fragmentation_pos = 0; 3890 if (release_buffer){ 3891 hci_release_packet_buffer(); 3892 } 3893 } 3894 } 3895 3896 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3897 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3898 if (hci_stack->iso_fragmentation_total_size > 0u) { 3899 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3900 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3901 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3902 hci_stack->iso_fragmentation_total_size = 0; 3903 hci_stack->iso_fragmentation_pos = 0; 3904 if (release_buffer){ 3905 hci_release_packet_buffer(); 3906 } 3907 } 3908 } 3909 3910 // finalize iso stream if handle matches 3911 iso_stream = hci_iso_stream_for_con_handle(handle); 3912 if (iso_stream != NULL){ 3913 hci_iso_stream_finalize(iso_stream); 3914 break; 3915 } 3916 #endif 3917 3918 conn = hci_connection_for_handle(handle); 3919 if (!conn) break; 3920 #ifdef ENABLE_CLASSIC 3921 // pairing failed if it was ongoing 3922 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3923 #endif 3924 3925 // emit dedicatd bonding event 3926 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3927 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3928 } 3929 3930 // mark connection for shutdown, stop timers, reset state 3931 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3932 hci_connection_stop_timer(conn); 3933 hci_connection_init(conn); 3934 3935 #ifdef ENABLE_BLE 3936 #ifdef ENABLE_LE_PERIPHERAL 3937 // re-enable advertisements for le connections if active 3938 if (hci_is_le_connection(conn)){ 3939 hci_update_advertisements_enabled_for_current_roles(); 3940 } 3941 #endif 3942 #endif 3943 break; 3944 3945 case HCI_EVENT_HARDWARE_ERROR: 3946 log_error("Hardware Error: 0x%02x", packet[2]); 3947 if (hci_stack->hardware_error_callback){ 3948 (*hci_stack->hardware_error_callback)(packet[2]); 3949 } else { 3950 // if no special requests, just reboot stack 3951 hci_power_control_off(); 3952 hci_power_control_on(); 3953 } 3954 break; 3955 3956 #ifdef ENABLE_CLASSIC 3957 case HCI_EVENT_ROLE_CHANGE: 3958 if (packet[2]) break; // status != 0 3959 reverse_bd_addr(&packet[3], addr); 3960 addr_type = BD_ADDR_TYPE_ACL; 3961 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3962 if (!conn) break; 3963 conn->role = packet[9]; 3964 break; 3965 #endif 3966 3967 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3968 // release packet buffer only for asynchronous transport and if there are not further fragments 3969 if (hci_transport_synchronous()) { 3970 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3971 return; // instead of break: to avoid re-entering hci_run() 3972 } 3973 hci_stack->acl_fragmentation_tx_active = 0; 3974 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3975 hci_stack->iso_fragmentation_tx_active = 0; 3976 if (hci_stack->iso_fragmentation_total_size) break; 3977 #endif 3978 if (hci_stack->acl_fragmentation_total_size) break; 3979 hci_release_packet_buffer(); 3980 3981 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3982 hci_iso_notify_can_send_now(); 3983 #endif 3984 // L2CAP receives this event via the hci_emit_event below 3985 3986 #ifdef ENABLE_CLASSIC 3987 // For SCO, we do the can_send_now_check here 3988 hci_notify_if_sco_can_send_now(); 3989 #endif 3990 break; 3991 3992 #ifdef ENABLE_CLASSIC 3993 case HCI_EVENT_SCO_CAN_SEND_NOW: 3994 // For SCO, we do the can_send_now_check here 3995 hci_stack->sco_can_send_now = true; 3996 hci_notify_if_sco_can_send_now(); 3997 return; 3998 3999 // explode inquriy results for easier consumption 4000 case HCI_EVENT_INQUIRY_RESULT: 4001 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4002 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4003 gap_inquiry_explode(packet, size); 4004 break; 4005 #endif 4006 4007 #ifdef ENABLE_BLE 4008 case HCI_EVENT_LE_META: 4009 switch (packet[2]){ 4010 #ifdef ENABLE_LE_CENTRAL 4011 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4012 if (!hci_stack->le_scanning_enabled) break; 4013 le_handle_advertisement_report(packet, size); 4014 break; 4015 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4016 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4017 if (!hci_stack->le_scanning_enabled) break; 4018 le_handle_extended_advertisement_report(packet, size); 4019 break; 4020 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4021 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4022 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4023 break; 4024 #endif 4025 #endif 4026 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4027 event_handle_le_connection_complete(packet); 4028 break; 4029 4030 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4031 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4032 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4033 conn = hci_connection_for_handle(handle); 4034 if (!conn) break; 4035 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4036 break; 4037 4038 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4039 // connection 4040 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4041 conn = hci_connection_for_handle(handle); 4042 if (conn) { 4043 // read arguments 4044 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4045 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4046 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4047 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4048 4049 // validate against current connection parameter range 4050 le_connection_parameter_range_t existing_range; 4051 gap_get_connection_parameter_range(&existing_range); 4052 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4053 if (update_parameter){ 4054 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4055 conn->le_conn_interval_min = le_conn_interval_min; 4056 conn->le_conn_interval_max = le_conn_interval_max; 4057 conn->le_conn_latency = le_conn_latency; 4058 conn->le_supervision_timeout = le_supervision_timeout; 4059 } else { 4060 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4061 } 4062 } 4063 break; 4064 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4065 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4066 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4067 conn = hci_connection_for_handle(handle); 4068 if (conn) { 4069 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4070 } 4071 break; 4072 #endif 4073 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4074 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4075 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4076 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4077 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4078 iso_stream = hci_iso_stream_for_con_handle(handle); 4079 btstack_assert(iso_stream != NULL); 4080 // track SDU 4081 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4082 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4083 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4084 // CIS Accept by Peripheral 4085 if (status == ERROR_CODE_SUCCESS){ 4086 if (iso_stream->max_sdu_p_to_c > 0){ 4087 // we're peripheral and we will send data 4088 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4089 } else { 4090 // we're peripheral and we will only receive data 4091 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4092 } 4093 } else { 4094 hci_iso_stream_finalize(iso_stream); 4095 hci_emit_cis_created(HCI_ISO_GROUP_ID_INVALID, handle, status); 4096 } 4097 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4098 } else { 4099 // CIG Setup by Central 4100 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4101 btstack_assert(cig != NULL); 4102 // update iso stream state 4103 if (status == ERROR_CODE_SUCCESS){ 4104 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4105 } else { 4106 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4107 } 4108 // update cig state 4109 uint8_t i; 4110 for (i=0;i<cig->num_cis;i++){ 4111 if (cig->cis_con_handles[i] == handle){ 4112 cig->cis_setup_active[i] = false; 4113 if (status == ERROR_CODE_SUCCESS){ 4114 cig->cis_established[i] = true; 4115 } else { 4116 hci_emit_cis_created(cig->cig_id, handle, status); 4117 } 4118 } 4119 } 4120 4121 // trigger iso path setup if complete 4122 bool cis_setup_active = false; 4123 for (i=0;i<cig->num_cis;i++){ 4124 cis_setup_active |= cig->cis_setup_active[i]; 4125 } 4126 if (cis_setup_active == false){ 4127 cig->state_vars.next_cis = 0; 4128 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4129 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4130 } 4131 } 4132 } 4133 break; 4134 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4135 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4136 big = hci_big_for_handle(packet[4]); 4137 if (big != NULL){ 4138 uint8_t status = packet[3]; 4139 if (status == ERROR_CODE_SUCCESS){ 4140 // store bis_con_handles and trigger iso path setup 4141 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4142 uint8_t i; 4143 for (i=0;i<num_bis;i++){ 4144 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4145 big->bis_con_handles[i] = bis_handle; 4146 // assign bis handle 4147 btstack_linked_list_iterator_t it; 4148 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4149 while (btstack_linked_list_iterator_has_next(&it)){ 4150 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4151 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4152 (iso_stream->group_id == big->big_handle)){ 4153 iso_stream->con_handle = bis_handle; 4154 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4155 break; 4156 } 4157 } 4158 } 4159 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4160 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4161 big->state_vars.next_bis = 0; 4162 } 4163 } else { 4164 // create BIG failed or has been stopped by us 4165 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4166 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4167 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4168 hci_emit_big_created(big, status); 4169 } else { 4170 hci_emit_big_terminated(big); 4171 } 4172 } 4173 } 4174 break; 4175 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4176 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4177 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4178 if (big != NULL){ 4179 // finalize associated ISO streams 4180 btstack_linked_list_iterator_t it; 4181 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4182 while (btstack_linked_list_iterator_has_next(&it)){ 4183 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4184 if (iso_stream->group_id == big->big_handle){ 4185 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->con_handle); 4186 btstack_linked_list_iterator_remove(&it); 4187 btstack_memory_hci_iso_stream_free(iso_stream); 4188 } 4189 } 4190 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4191 switch (big->state){ 4192 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4193 hci_emit_big_created(big, big->state_vars.status); 4194 break; 4195 default: 4196 hci_emit_big_terminated(big); 4197 break; 4198 } 4199 } 4200 break; 4201 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4202 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4203 big_sync = hci_big_sync_for_handle(packet[4]); 4204 if (big_sync != NULL){ 4205 uint8_t status = packet[3]; 4206 uint8_t big_handle = packet[4]; 4207 if (status == ERROR_CODE_SUCCESS){ 4208 // store bis_con_handles and trigger iso path setup 4209 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4210 uint8_t i; 4211 for (i=0;i<num_bis;i++){ 4212 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4213 } 4214 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4215 // trigger iso path setup 4216 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4217 big_sync->state_vars.next_bis = 0; 4218 } 4219 } else { 4220 // create BIG Sync failed or has been stopped by us 4221 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4222 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4223 hci_emit_big_sync_created(big_sync, status); 4224 } else { 4225 hci_emit_big_sync_stopped(big_handle); 4226 } 4227 } 4228 } 4229 break; 4230 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4231 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4232 big_sync = hci_big_sync_for_handle(packet[4]); 4233 if (big_sync != NULL){ 4234 uint8_t big_handle = packet[4]; 4235 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4236 hci_emit_big_sync_stopped(big_handle); 4237 } 4238 break; 4239 #endif 4240 default: 4241 break; 4242 } 4243 break; 4244 #endif 4245 case HCI_EVENT_VENDOR_SPECIFIC: 4246 // Vendor specific commands often create vendor specific event instead of num completed packets 4247 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4248 switch (hci_stack->manufacturer){ 4249 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4250 hci_stack->num_cmd_packets = 1; 4251 break; 4252 default: 4253 break; 4254 } 4255 break; 4256 default: 4257 break; 4258 } 4259 4260 handle_event_for_current_stack_state(packet, size); 4261 4262 // notify upper stack 4263 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4264 4265 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4266 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4267 handle = little_endian_read_16(packet, 3); 4268 hci_connection_t * aConn = hci_connection_for_handle(handle); 4269 // discard connection if app did not trigger a reconnect in the event handler 4270 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4271 hci_shutdown_connection(aConn); 4272 } 4273 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4274 hci_controller_dump_packets(); 4275 #endif 4276 } 4277 4278 // execute main loop 4279 hci_run(); 4280 } 4281 4282 #ifdef ENABLE_CLASSIC 4283 4284 #ifdef ENABLE_SCO_OVER_HCI 4285 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4286 static void sco_schedule_tx(hci_connection_t * conn); 4287 4288 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4289 log_debug("SCO TX Timeout"); 4290 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4291 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4292 if (!conn) return; 4293 4294 // trigger send 4295 conn->sco_tx_ready = 1; 4296 // extra packet if CVSD but SCO buffer is too short 4297 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4298 conn->sco_tx_ready++; 4299 } 4300 hci_notify_if_sco_can_send_now(); 4301 } 4302 4303 4304 #define SCO_TX_AFTER_RX_MS (6) 4305 4306 static void sco_schedule_tx(hci_connection_t * conn){ 4307 4308 uint32_t now = btstack_run_loop_get_time_ms(); 4309 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4310 int time_delta_ms = sco_tx_ms - now; 4311 4312 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4313 4314 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4315 btstack_run_loop_remove_timer(timer); 4316 btstack_run_loop_set_timer(timer, time_delta_ms); 4317 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4318 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4319 btstack_run_loop_add_timer(timer); 4320 } 4321 #endif 4322 4323 static void sco_handler(uint8_t * packet, uint16_t size){ 4324 // lookup connection struct 4325 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4326 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4327 if (!conn) return; 4328 4329 #ifdef ENABLE_SCO_OVER_HCI 4330 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4331 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4332 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4333 packet[2] = 0x3c; 4334 memmove(&packet[3], &packet[23], 63); 4335 size = 63; 4336 } 4337 } 4338 4339 if (hci_have_usb_transport()){ 4340 // Nothing to do 4341 } else { 4342 // 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); 4343 if (hci_stack->synchronous_flow_control_enabled == 0){ 4344 uint32_t now = btstack_run_loop_get_time_ms(); 4345 4346 if (!conn->sco_rx_valid){ 4347 // ignore first 10 packets 4348 conn->sco_rx_count++; 4349 // log_debug("sco rx count %u", conn->sco_rx_count); 4350 if (conn->sco_rx_count == 10) { 4351 // use first timestamp as is and pretent it just started 4352 conn->sco_rx_ms = now; 4353 conn->sco_rx_valid = 1; 4354 conn->sco_rx_count = 0; 4355 sco_schedule_tx(conn); 4356 } 4357 } else { 4358 // track expected arrival timme 4359 conn->sco_rx_count++; 4360 conn->sco_rx_ms += 7; 4361 int delta = (int32_t) (now - conn->sco_rx_ms); 4362 if (delta > 0){ 4363 conn->sco_rx_ms++; 4364 } 4365 // log_debug("sco rx %u", conn->sco_rx_ms); 4366 sco_schedule_tx(conn); 4367 } 4368 } 4369 } 4370 #endif 4371 4372 // deliver to app 4373 if (hci_stack->sco_packet_handler) { 4374 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4375 } 4376 4377 #ifdef HAVE_SCO_TRANSPORT 4378 // We can send one packet for each received packet 4379 conn->sco_tx_ready++; 4380 hci_notify_if_sco_can_send_now(); 4381 #endif 4382 4383 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4384 conn->num_packets_completed++; 4385 hci_stack->host_completed_packets = 1; 4386 hci_run(); 4387 #endif 4388 } 4389 #endif 4390 4391 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4392 hci_dump_packet(packet_type, 1, packet, size); 4393 switch (packet_type) { 4394 case HCI_EVENT_PACKET: 4395 event_handler(packet, size); 4396 break; 4397 case HCI_ACL_DATA_PACKET: 4398 acl_handler(packet, size); 4399 break; 4400 #ifdef ENABLE_CLASSIC 4401 case HCI_SCO_DATA_PACKET: 4402 sco_handler(packet, size); 4403 break; 4404 #endif 4405 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4406 case HCI_ISO_DATA_PACKET: 4407 hci_iso_packet_handler(packet, size); 4408 break; 4409 #endif 4410 default: 4411 break; 4412 } 4413 } 4414 4415 /** 4416 * @brief Add event packet handler. 4417 */ 4418 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4419 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4420 } 4421 4422 /** 4423 * @brief Remove event packet handler. 4424 */ 4425 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4426 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4427 } 4428 4429 /** Register HCI packet handlers */ 4430 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4431 hci_stack->acl_packet_handler = handler; 4432 } 4433 4434 #ifdef ENABLE_CLASSIC 4435 /** 4436 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4437 */ 4438 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4439 hci_stack->sco_packet_handler = handler; 4440 } 4441 #endif 4442 4443 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4444 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4445 hci_stack->iso_packet_handler = handler; 4446 } 4447 #endif 4448 4449 static void hci_state_reset(void){ 4450 // no connections yet 4451 hci_stack->connections = NULL; 4452 4453 // keep discoverable/connectable as this has been requested by the client(s) 4454 // hci_stack->discoverable = 0; 4455 // hci_stack->connectable = 0; 4456 // hci_stack->bondable = 1; 4457 // hci_stack->own_addr_type = 0; 4458 4459 // buffer is free 4460 hci_stack->hci_packet_buffer_reserved = false; 4461 4462 // no pending cmds 4463 hci_stack->decline_reason = 0; 4464 4465 hci_stack->secure_connections_active = false; 4466 4467 #ifdef ENABLE_CLASSIC 4468 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4469 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4470 4471 hci_stack->gap_tasks_classic = 4472 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4473 GAP_TASK_SET_CLASS_OF_DEVICE | 4474 GAP_TASK_SET_LOCAL_NAME | 4475 GAP_TASK_SET_EIR_DATA | 4476 GAP_TASK_WRITE_SCAN_ENABLE | 4477 GAP_TASK_WRITE_PAGE_TIMEOUT; 4478 #endif 4479 4480 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4481 hci_stack->classic_read_local_oob_data = false; 4482 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4483 #endif 4484 4485 // LE 4486 #ifdef ENABLE_BLE 4487 memset(hci_stack->le_random_address, 0, 6); 4488 hci_stack->le_random_address_set = 0; 4489 #endif 4490 #ifdef ENABLE_LE_CENTRAL 4491 hci_stack->le_scanning_active = false; 4492 hci_stack->le_scanning_param_update = true; 4493 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4494 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4495 hci_stack->le_whitelist_capacity = 0; 4496 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4497 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4498 #endif 4499 #endif 4500 #ifdef ENABLE_LE_PERIPHERAL 4501 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4502 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4503 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4504 } 4505 if (hci_stack->le_advertisements_data != NULL){ 4506 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4507 } 4508 #endif 4509 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4510 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4511 #endif 4512 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4513 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4514 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4515 #endif 4516 } 4517 4518 #ifdef ENABLE_CLASSIC 4519 /** 4520 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4521 */ 4522 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4523 // store and open remote device db 4524 hci_stack->link_key_db = link_key_db; 4525 if (hci_stack->link_key_db) { 4526 hci_stack->link_key_db->open(); 4527 } 4528 } 4529 #endif 4530 4531 void hci_init(const hci_transport_t *transport, const void *config){ 4532 4533 #ifdef HAVE_MALLOC 4534 if (!hci_stack) { 4535 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4536 } 4537 #else 4538 hci_stack = &hci_stack_static; 4539 #endif 4540 memset(hci_stack, 0, sizeof(hci_stack_t)); 4541 4542 // reference to use transport layer implementation 4543 hci_stack->hci_transport = transport; 4544 4545 // reference to used config 4546 hci_stack->config = config; 4547 4548 // setup pointer for outgoing packet buffer 4549 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4550 4551 // max acl payload size defined in config.h 4552 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4553 4554 // register packet handlers with transport 4555 transport->register_packet_handler(&packet_handler); 4556 4557 hci_stack->state = HCI_STATE_OFF; 4558 4559 // class of device 4560 hci_stack->class_of_device = 0x007a020c; // Smartphone 4561 4562 // bondable by default 4563 hci_stack->bondable = 1; 4564 4565 #ifdef ENABLE_CLASSIC 4566 // classic name 4567 hci_stack->local_name = default_classic_name; 4568 4569 // Master slave policy 4570 hci_stack->master_slave_policy = 1; 4571 4572 // Allow Role Switch 4573 hci_stack->allow_role_switch = 1; 4574 4575 // Default / minimum security level = 2 4576 hci_stack->gap_security_level = LEVEL_2; 4577 4578 // Default Security Mode 4 4579 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4580 4581 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4582 hci_stack->gap_required_encyrption_key_size = 7; 4583 4584 // Link Supervision Timeout 4585 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4586 4587 #endif 4588 4589 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4590 hci_stack->ssp_enable = 1; 4591 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4592 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4593 hci_stack->ssp_auto_accept = 1; 4594 4595 // Secure Connections: enable (requires support from Controller) 4596 hci_stack->secure_connections_enable = true; 4597 4598 // voice setting - signed 16 bit pcm data with CVSD over the air 4599 hci_stack->sco_voice_setting = 0x60; 4600 4601 #ifdef ENABLE_LE_CENTRAL 4602 // connection parameter to use for outgoing connections 4603 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4604 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4605 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4606 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4607 hci_stack->le_connection_latency = 4; // 4 4608 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4609 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4610 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4611 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4612 4613 // default LE Scanning 4614 hci_stack->le_scan_type = 0x01; // active 4615 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4616 hci_stack->le_scan_window = 0x30; // 30 ms 4617 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4618 #endif 4619 4620 #ifdef ENABLE_LE_PERIPHERAL 4621 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4622 4623 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4624 hci_stack->le_advertisements_interval_min = 0x0800; 4625 hci_stack->le_advertisements_interval_max = 0x0800; 4626 hci_stack->le_advertisements_type = 0; 4627 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4628 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4629 hci_stack->le_advertisements_channel_map = 0x07; 4630 hci_stack->le_advertisements_filter_policy = 0; 4631 #endif 4632 4633 // connection parameter range used to answer connection parameter update requests in l2cap 4634 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4635 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4636 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4637 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4638 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4639 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4640 4641 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4642 hci_stack->iso_packets_to_queue = 1; 4643 #endif 4644 4645 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4646 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4647 #endif 4648 4649 hci_state_reset(); 4650 } 4651 4652 void hci_deinit(void){ 4653 btstack_run_loop_remove_timer(&hci_stack->timeout); 4654 #ifdef HAVE_MALLOC 4655 if (hci_stack) { 4656 free(hci_stack); 4657 } 4658 #endif 4659 hci_stack = NULL; 4660 4661 #ifdef ENABLE_CLASSIC 4662 disable_l2cap_timeouts = 0; 4663 #endif 4664 } 4665 4666 /** 4667 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4668 */ 4669 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4670 hci_stack->chipset = chipset_driver; 4671 4672 // reset chipset driver - init is also called on power_up 4673 if (hci_stack->chipset && hci_stack->chipset->init){ 4674 hci_stack->chipset->init(hci_stack->config); 4675 } 4676 } 4677 4678 void hci_enable_custom_pre_init(void){ 4679 hci_stack->chipset_pre_init = true; 4680 } 4681 4682 /** 4683 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4684 */ 4685 void hci_set_control(const btstack_control_t *hardware_control){ 4686 // references to used control implementation 4687 hci_stack->control = hardware_control; 4688 // init with transport config 4689 hardware_control->init(hci_stack->config); 4690 } 4691 4692 static void hci_discard_connections(void){ 4693 btstack_linked_list_iterator_t it; 4694 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4695 while (btstack_linked_list_iterator_has_next(&it)){ 4696 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4697 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4698 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4699 hci_shutdown_connection(connection); 4700 } 4701 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4702 while (hci_stack->iso_streams != NULL){ 4703 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4704 } 4705 #endif 4706 } 4707 4708 void hci_close(void){ 4709 4710 #ifdef ENABLE_CLASSIC 4711 // close remote device db 4712 if (hci_stack->link_key_db) { 4713 hci_stack->link_key_db->close(); 4714 } 4715 #endif 4716 4717 hci_discard_connections(); 4718 4719 hci_power_control(HCI_POWER_OFF); 4720 4721 #ifdef HAVE_MALLOC 4722 free(hci_stack); 4723 #endif 4724 hci_stack = NULL; 4725 } 4726 4727 #ifdef HAVE_SCO_TRANSPORT 4728 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4729 hci_stack->sco_transport = sco_transport; 4730 sco_transport->register_packet_handler(&packet_handler); 4731 } 4732 #endif 4733 4734 #ifdef ENABLE_CLASSIC 4735 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4736 // validate ranage and set 4737 if (encryption_key_size < 7) return; 4738 if (encryption_key_size > 16) return; 4739 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4740 } 4741 4742 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4743 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4744 hci_stack->gap_security_mode = security_mode; 4745 return ERROR_CODE_SUCCESS; 4746 } else { 4747 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4748 } 4749 } 4750 4751 gap_security_mode_t gap_get_security_mode(void){ 4752 return hci_stack->gap_security_mode; 4753 } 4754 4755 void gap_set_security_level(gap_security_level_t security_level){ 4756 hci_stack->gap_security_level = security_level; 4757 } 4758 4759 gap_security_level_t gap_get_security_level(void){ 4760 if (hci_stack->gap_secure_connections_only_mode){ 4761 return LEVEL_4; 4762 } 4763 return hci_stack->gap_security_level; 4764 } 4765 4766 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4767 hci_stack->gap_minimal_service_security_level = security_level; 4768 } 4769 4770 void gap_set_secure_connections_only_mode(bool enable){ 4771 hci_stack->gap_secure_connections_only_mode = enable; 4772 } 4773 4774 bool gap_get_secure_connections_only_mode(void){ 4775 return hci_stack->gap_secure_connections_only_mode; 4776 } 4777 #endif 4778 4779 #ifdef ENABLE_CLASSIC 4780 void gap_set_class_of_device(uint32_t class_of_device){ 4781 hci_stack->class_of_device = class_of_device; 4782 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4783 hci_run(); 4784 } 4785 4786 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4787 hci_stack->default_link_policy_settings = default_link_policy_settings; 4788 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4789 hci_run(); 4790 } 4791 4792 void gap_set_allow_role_switch(bool allow_role_switch){ 4793 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4794 } 4795 4796 uint8_t hci_get_allow_role_switch(void){ 4797 return hci_stack->allow_role_switch; 4798 } 4799 4800 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4801 hci_stack->link_supervision_timeout = link_supervision_timeout; 4802 } 4803 4804 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4805 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4806 } 4807 4808 uint16_t hci_automatic_flush_timeout(void){ 4809 return hci_stack->automatic_flush_timeout; 4810 } 4811 4812 void hci_disable_l2cap_timeout_check(void){ 4813 disable_l2cap_timeouts = 1; 4814 } 4815 #endif 4816 4817 #ifndef HAVE_HOST_CONTROLLER_API 4818 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4819 void hci_set_bd_addr(bd_addr_t addr){ 4820 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4821 hci_stack->custom_bd_addr_set = 1; 4822 } 4823 #endif 4824 4825 // State-Module-Driver overview 4826 // state module low-level 4827 // HCI_STATE_OFF off close 4828 // HCI_STATE_INITIALIZING, on open 4829 // HCI_STATE_WORKING, on open 4830 // HCI_STATE_HALTING, on open 4831 // HCI_STATE_SLEEPING, off/sleep close 4832 // HCI_STATE_FALLING_ASLEEP on open 4833 4834 static int hci_power_control_on(void){ 4835 4836 // power on 4837 int err = 0; 4838 if (hci_stack->control && hci_stack->control->on){ 4839 err = (*hci_stack->control->on)(); 4840 } 4841 if (err){ 4842 log_error( "POWER_ON failed"); 4843 hci_emit_hci_open_failed(); 4844 return err; 4845 } 4846 4847 // int chipset driver 4848 if (hci_stack->chipset && hci_stack->chipset->init){ 4849 hci_stack->chipset->init(hci_stack->config); 4850 } 4851 4852 // init transport 4853 if (hci_stack->hci_transport->init){ 4854 hci_stack->hci_transport->init(hci_stack->config); 4855 } 4856 4857 // open transport 4858 err = hci_stack->hci_transport->open(); 4859 if (err){ 4860 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4861 if (hci_stack->control && hci_stack->control->off){ 4862 (*hci_stack->control->off)(); 4863 } 4864 hci_emit_hci_open_failed(); 4865 return err; 4866 } 4867 return 0; 4868 } 4869 4870 static void hci_power_control_off(void){ 4871 4872 log_info("hci_power_control_off"); 4873 4874 // close low-level device 4875 hci_stack->hci_transport->close(); 4876 4877 log_info("hci_power_control_off - hci_transport closed"); 4878 4879 // power off 4880 if (hci_stack->control && hci_stack->control->off){ 4881 (*hci_stack->control->off)(); 4882 } 4883 4884 log_info("hci_power_control_off - control closed"); 4885 4886 hci_stack->state = HCI_STATE_OFF; 4887 } 4888 4889 static void hci_power_control_sleep(void){ 4890 4891 log_info("hci_power_control_sleep"); 4892 4893 #if 0 4894 // don't close serial port during sleep 4895 4896 // close low-level device 4897 hci_stack->hci_transport->close(hci_stack->config); 4898 #endif 4899 4900 // sleep mode 4901 if (hci_stack->control && hci_stack->control->sleep){ 4902 (*hci_stack->control->sleep)(); 4903 } 4904 4905 hci_stack->state = HCI_STATE_SLEEPING; 4906 } 4907 4908 static int hci_power_control_wake(void){ 4909 4910 log_info("hci_power_control_wake"); 4911 4912 // wake on 4913 if (hci_stack->control && hci_stack->control->wake){ 4914 (*hci_stack->control->wake)(); 4915 } 4916 4917 #if 0 4918 // open low-level device 4919 int err = hci_stack->hci_transport->open(hci_stack->config); 4920 if (err){ 4921 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4922 if (hci_stack->control && hci_stack->control->off){ 4923 (*hci_stack->control->off)(); 4924 } 4925 hci_emit_hci_open_failed(); 4926 return err; 4927 } 4928 #endif 4929 4930 return 0; 4931 } 4932 4933 static void hci_power_enter_initializing_state(void){ 4934 // set up state machine 4935 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4936 hci_stack->hci_packet_buffer_reserved = false; 4937 hci_stack->state = HCI_STATE_INITIALIZING; 4938 4939 if (hci_stack->chipset_pre_init) { 4940 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 4941 } else { 4942 hci_stack->substate = HCI_INIT_SEND_RESET; 4943 } 4944 } 4945 4946 static void hci_power_enter_halting_state(void){ 4947 #ifdef ENABLE_BLE 4948 // drop entries scheduled for removal, mark others for re-adding 4949 btstack_linked_list_iterator_t it; 4950 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 4951 while (btstack_linked_list_iterator_has_next(&it)){ 4952 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 4953 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 4954 btstack_linked_list_iterator_remove(&it); 4955 btstack_memory_whitelist_entry_free(entry); 4956 } else { 4957 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 4958 } 4959 } 4960 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4961 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 4962 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 4963 while (btstack_linked_list_iterator_has_next(&it)){ 4964 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 4965 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 4966 btstack_linked_list_iterator_remove(&it); 4967 btstack_memory_periodic_advertiser_list_entry_free(entry); 4968 } else { 4969 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 4970 continue; 4971 } 4972 } 4973 #endif 4974 #endif 4975 // see hci_run 4976 hci_stack->state = HCI_STATE_HALTING; 4977 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4978 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4979 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4980 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4981 btstack_run_loop_add_timer(&hci_stack->timeout); 4982 } 4983 4984 // returns error 4985 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4986 int err; 4987 switch (power_mode){ 4988 case HCI_POWER_ON: 4989 err = hci_power_control_on(); 4990 if (err != 0) { 4991 log_error("hci_power_control_on() error %d", err); 4992 return err; 4993 } 4994 hci_power_enter_initializing_state(); 4995 break; 4996 case HCI_POWER_OFF: 4997 // do nothing 4998 break; 4999 case HCI_POWER_SLEEP: 5000 // do nothing (with SLEEP == OFF) 5001 break; 5002 default: 5003 btstack_assert(false); 5004 break; 5005 } 5006 return ERROR_CODE_SUCCESS; 5007 } 5008 5009 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5010 switch (power_mode){ 5011 case HCI_POWER_ON: 5012 // do nothing 5013 break; 5014 case HCI_POWER_OFF: 5015 // no connections yet, just turn it off 5016 hci_power_control_off(); 5017 break; 5018 case HCI_POWER_SLEEP: 5019 // no connections yet, just turn it off 5020 hci_power_control_sleep(); 5021 break; 5022 default: 5023 btstack_assert(false); 5024 break; 5025 } 5026 return ERROR_CODE_SUCCESS; 5027 } 5028 5029 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5030 switch (power_mode){ 5031 case HCI_POWER_ON: 5032 // do nothing 5033 break; 5034 case HCI_POWER_OFF: 5035 hci_power_enter_halting_state(); 5036 break; 5037 case HCI_POWER_SLEEP: 5038 // see hci_run 5039 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5040 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5041 break; 5042 default: 5043 btstack_assert(false); 5044 break; 5045 } 5046 return ERROR_CODE_SUCCESS; 5047 } 5048 5049 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5050 switch (power_mode){ 5051 case HCI_POWER_ON: 5052 hci_power_enter_initializing_state(); 5053 break; 5054 case HCI_POWER_OFF: 5055 // do nothing 5056 break; 5057 case HCI_POWER_SLEEP: 5058 // see hci_run 5059 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5060 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5061 break; 5062 default: 5063 btstack_assert(false); 5064 break; 5065 } 5066 return ERROR_CODE_SUCCESS; 5067 } 5068 5069 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5070 switch (power_mode){ 5071 case HCI_POWER_ON: 5072 hci_power_enter_initializing_state(); 5073 break; 5074 case HCI_POWER_OFF: 5075 hci_power_enter_halting_state(); 5076 break; 5077 case HCI_POWER_SLEEP: 5078 // do nothing 5079 break; 5080 default: 5081 btstack_assert(false); 5082 break; 5083 } 5084 return ERROR_CODE_SUCCESS; 5085 } 5086 5087 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5088 int err; 5089 switch (power_mode){ 5090 case HCI_POWER_ON: 5091 err = hci_power_control_wake(); 5092 if (err) return err; 5093 hci_power_enter_initializing_state(); 5094 break; 5095 case HCI_POWER_OFF: 5096 hci_power_enter_halting_state(); 5097 break; 5098 case HCI_POWER_SLEEP: 5099 // do nothing 5100 break; 5101 default: 5102 btstack_assert(false); 5103 break; 5104 } 5105 return ERROR_CODE_SUCCESS; 5106 } 5107 5108 int hci_power_control(HCI_POWER_MODE power_mode){ 5109 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5110 btstack_run_loop_remove_timer(&hci_stack->timeout); 5111 int err = 0; 5112 switch (hci_stack->state){ 5113 case HCI_STATE_OFF: 5114 err = hci_power_control_state_off(power_mode); 5115 break; 5116 case HCI_STATE_INITIALIZING: 5117 err = hci_power_control_state_initializing(power_mode); 5118 break; 5119 case HCI_STATE_WORKING: 5120 err = hci_power_control_state_working(power_mode); 5121 break; 5122 case HCI_STATE_HALTING: 5123 err = hci_power_control_state_halting(power_mode); 5124 break; 5125 case HCI_STATE_FALLING_ASLEEP: 5126 err = hci_power_control_state_falling_asleep(power_mode); 5127 break; 5128 case HCI_STATE_SLEEPING: 5129 err = hci_power_control_state_sleeping(power_mode); 5130 break; 5131 default: 5132 btstack_assert(false); 5133 break; 5134 } 5135 if (err != 0){ 5136 return err; 5137 } 5138 5139 // create internal event 5140 hci_emit_state(); 5141 5142 // trigger next/first action 5143 hci_run(); 5144 5145 return 0; 5146 } 5147 5148 5149 static void hci_halting_run(void) { 5150 5151 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5152 5153 hci_connection_t *connection; 5154 #ifdef ENABLE_BLE 5155 #ifdef ENABLE_LE_PERIPHERAL 5156 bool stop_advertismenets; 5157 #endif 5158 #endif 5159 5160 switch (hci_stack->substate) { 5161 case HCI_HALTING_CLASSIC_STOP: 5162 #ifdef ENABLE_CLASSIC 5163 if (!hci_can_send_command_packet_now()) return; 5164 5165 if (hci_stack->connectable || hci_stack->discoverable){ 5166 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5167 hci_send_cmd(&hci_write_scan_enable, 0); 5168 return; 5169 } 5170 #endif 5171 /* fall through */ 5172 5173 case HCI_HALTING_LE_ADV_STOP: 5174 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5175 5176 #ifdef ENABLE_BLE 5177 #ifdef ENABLE_LE_PERIPHERAL 5178 if (!hci_can_send_command_packet_now()) return; 5179 5180 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5181 5182 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5183 if (hci_extended_advertising_supported()){ 5184 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5185 btstack_linked_list_iterator_t it; 5186 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5187 // stop all periodic advertisements and check if an extended set is active 5188 while (btstack_linked_list_iterator_has_next(&it)){ 5189 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5190 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5191 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5192 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5193 return; 5194 } 5195 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5196 stop_advertismenets = true; 5197 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5198 } 5199 } 5200 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5201 if (stop_advertismenets){ 5202 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5203 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5204 return; 5205 } 5206 } else 5207 #else /* ENABLE_LE_PERIPHERAL */ 5208 { 5209 if (stop_advertismenets) { 5210 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5211 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5212 return; 5213 } 5214 } 5215 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5216 #endif /* ENABLE_LE_PERIPHERAL */ 5217 #endif /* ENABLE_BLE */ 5218 5219 /* fall through */ 5220 5221 case HCI_HALTING_LE_SCAN_STOP: 5222 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5223 if (!hci_can_send_command_packet_now()) return; 5224 5225 #ifdef ENABLE_BLE 5226 #ifdef ENABLE_LE_CENTRAL 5227 if (hci_stack->le_scanning_active){ 5228 hci_le_scan_stop(); 5229 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5230 return; 5231 } 5232 #endif 5233 #endif 5234 5235 /* fall through */ 5236 5237 case HCI_HALTING_DISCONNECT_ALL: 5238 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5239 if (!hci_can_send_command_packet_now()) return; 5240 5241 // close all open connections 5242 connection = (hci_connection_t *) hci_stack->connections; 5243 if (connection) { 5244 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5245 5246 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5247 5248 // check state 5249 switch(connection->state) { 5250 case SENT_DISCONNECT: 5251 case RECEIVED_DISCONNECTION_COMPLETE: 5252 // wait until connection is gone 5253 return; 5254 default: 5255 break; 5256 } 5257 5258 // finally, send the disconnect command 5259 connection->state = SENT_DISCONNECT; 5260 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5261 return; 5262 } 5263 5264 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5265 // stop BIGs and BIG Syncs 5266 if (hci_stack->le_audio_bigs != NULL){ 5267 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5268 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5269 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5270 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5271 return; 5272 } 5273 if (hci_stack->le_audio_big_syncs != NULL){ 5274 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5275 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5276 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5277 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5278 return; 5279 } 5280 #endif 5281 5282 btstack_run_loop_remove_timer(&hci_stack->timeout); 5283 5284 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5285 log_info("HCI_STATE_HALTING: wait 50 ms"); 5286 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5287 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5288 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5289 btstack_run_loop_add_timer(&hci_stack->timeout); 5290 break; 5291 5292 case HCI_HALTING_W4_CLOSE_TIMER: 5293 // keep waiting 5294 break; 5295 5296 case HCI_HALTING_CLOSE: 5297 // close left over connections (that had not been properly closed before) 5298 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5299 hci_discard_connections(); 5300 5301 log_info("HCI_STATE_HALTING, calling off"); 5302 5303 // switch mode 5304 hci_power_control_off(); 5305 5306 log_info("HCI_STATE_HALTING, emitting state"); 5307 hci_emit_state(); 5308 log_info("HCI_STATE_HALTING, done"); 5309 break; 5310 5311 default: 5312 break; 5313 } 5314 }; 5315 5316 static void hci_falling_asleep_run(void){ 5317 hci_connection_t * connection; 5318 switch(hci_stack->substate) { 5319 case HCI_FALLING_ASLEEP_DISCONNECT: 5320 log_info("HCI_STATE_FALLING_ASLEEP"); 5321 // close all open connections 5322 connection = (hci_connection_t *) hci_stack->connections; 5323 if (connection){ 5324 5325 // send disconnect 5326 if (!hci_can_send_command_packet_now()) return; 5327 5328 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5329 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5330 5331 // send disconnected event right away - causes higher layer connections to get closed, too. 5332 hci_shutdown_connection(connection); 5333 return; 5334 } 5335 5336 if (hci_classic_supported()){ 5337 // disable page and inquiry scan 5338 if (!hci_can_send_command_packet_now()) return; 5339 5340 log_info("HCI_STATE_HALTING, disabling inq scans"); 5341 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5342 5343 // continue in next sub state 5344 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5345 break; 5346 } 5347 5348 /* fall through */ 5349 5350 case HCI_FALLING_ASLEEP_COMPLETE: 5351 log_info("HCI_STATE_HALTING, calling sleep"); 5352 // switch mode 5353 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5354 hci_emit_state(); 5355 break; 5356 5357 default: 5358 break; 5359 } 5360 } 5361 5362 #ifdef ENABLE_CLASSIC 5363 5364 static void hci_update_scan_enable(void){ 5365 // 2 = page scan, 1 = inq scan 5366 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5367 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5368 hci_run(); 5369 } 5370 5371 void gap_discoverable_control(uint8_t enable){ 5372 if (enable) enable = 1; // normalize argument 5373 5374 if (hci_stack->discoverable == enable){ 5375 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5376 return; 5377 } 5378 5379 hci_stack->discoverable = enable; 5380 hci_update_scan_enable(); 5381 } 5382 5383 void gap_connectable_control(uint8_t enable){ 5384 if (enable) enable = 1; // normalize argument 5385 5386 // don't emit event 5387 if (hci_stack->connectable == enable) return; 5388 5389 hci_stack->connectable = enable; 5390 hci_update_scan_enable(); 5391 } 5392 #endif 5393 5394 void gap_local_bd_addr(bd_addr_t address_buffer){ 5395 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5396 } 5397 5398 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5399 static void hci_host_num_completed_packets(void){ 5400 5401 // create packet manually as arrays are not supported and num_commands should not get reduced 5402 hci_reserve_packet_buffer(); 5403 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5404 5405 uint16_t size = 0; 5406 uint16_t num_handles = 0; 5407 packet[size++] = 0x35; 5408 packet[size++] = 0x0c; 5409 size++; // skip param len 5410 size++; // skip num handles 5411 5412 // add { handle, packets } entries 5413 btstack_linked_item_t * it; 5414 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5415 hci_connection_t * connection = (hci_connection_t *) it; 5416 if (connection->num_packets_completed){ 5417 little_endian_store_16(packet, size, connection->con_handle); 5418 size += 2; 5419 little_endian_store_16(packet, size, connection->num_packets_completed); 5420 size += 2; 5421 // 5422 num_handles++; 5423 connection->num_packets_completed = 0; 5424 } 5425 } 5426 5427 packet[2] = size - 3; 5428 packet[3] = num_handles; 5429 5430 hci_stack->host_completed_packets = 0; 5431 5432 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5433 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5434 5435 // release packet buffer for synchronous transport implementations 5436 if (hci_transport_synchronous()){ 5437 hci_release_packet_buffer(); 5438 hci_emit_transport_packet_sent(); 5439 } 5440 } 5441 #endif 5442 5443 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5444 UNUSED(ds); 5445 hci_stack->substate = HCI_HALTING_CLOSE; 5446 hci_halting_run(); 5447 } 5448 5449 static bool hci_run_acl_fragments(void){ 5450 if (hci_stack->acl_fragmentation_total_size > 0u) { 5451 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5452 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5453 if (connection) { 5454 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5455 hci_send_acl_packet_fragments(connection); 5456 return true; 5457 } 5458 } else { 5459 // connection gone -> discard further fragments 5460 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5461 hci_stack->acl_fragmentation_total_size = 0; 5462 hci_stack->acl_fragmentation_pos = 0; 5463 } 5464 } 5465 return false; 5466 } 5467 5468 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5469 static bool hci_run_iso_fragments(void){ 5470 if (hci_stack->iso_fragmentation_total_size > 0u) { 5471 // TODO: flow control 5472 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5473 hci_send_iso_packet_fragments(); 5474 return true; 5475 } 5476 } 5477 return false; 5478 } 5479 #endif 5480 5481 #ifdef ENABLE_CLASSIC 5482 5483 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5484 static bool hci_classic_operation_active(void) { 5485 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5486 return true; 5487 } 5488 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5489 return true; 5490 } 5491 btstack_linked_item_t * it; 5492 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5493 hci_connection_t *connection = (hci_connection_t *) it; 5494 switch (connection->state) { 5495 case SENT_CREATE_CONNECTION: 5496 case SENT_CANCEL_CONNECTION: 5497 case SENT_DISCONNECT: 5498 return true; 5499 default: 5500 break; 5501 } 5502 } 5503 return false; 5504 } 5505 #endif 5506 5507 static bool hci_run_general_gap_classic(void){ 5508 5509 // assert stack is working and classic is active 5510 if (hci_classic_supported() == false) return false; 5511 if (hci_stack->state != HCI_STATE_WORKING) return false; 5512 5513 // decline incoming connections 5514 if (hci_stack->decline_reason){ 5515 uint8_t reason = hci_stack->decline_reason; 5516 hci_stack->decline_reason = 0; 5517 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5518 return true; 5519 } 5520 5521 if (hci_stack->gap_tasks_classic != 0){ 5522 hci_run_gap_tasks_classic(); 5523 return true; 5524 } 5525 5526 // start/stop inquiry 5527 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5528 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5529 if (hci_classic_operation_active() == false) 5530 #endif 5531 { 5532 uint8_t duration = hci_stack->inquiry_state; 5533 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5534 if (hci_stack->inquiry_max_period_length != 0){ 5535 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); 5536 } else { 5537 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5538 } 5539 return true; 5540 } 5541 } 5542 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5543 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5544 hci_send_cmd(&hci_inquiry_cancel); 5545 return true; 5546 } 5547 5548 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5549 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5550 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5551 return true; 5552 } 5553 5554 // remote name request 5555 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5556 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5557 if (hci_classic_operation_active() == false) 5558 #endif 5559 { 5560 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5561 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5562 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5563 return true; 5564 } 5565 } 5566 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5567 // Local OOB data 5568 if (hci_stack->classic_read_local_oob_data){ 5569 hci_stack->classic_read_local_oob_data = false; 5570 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5571 hci_send_cmd(&hci_read_local_extended_oob_data); 5572 } else { 5573 hci_send_cmd(&hci_read_local_oob_data); 5574 } 5575 } 5576 #endif 5577 // pairing 5578 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5579 uint8_t state = hci_stack->gap_pairing_state; 5580 uint8_t pin_code[16]; 5581 switch (state){ 5582 case GAP_PAIRING_STATE_SEND_PIN: 5583 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5584 memset(pin_code, 0, 16); 5585 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5586 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5587 break; 5588 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5589 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5590 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5591 break; 5592 case GAP_PAIRING_STATE_SEND_PASSKEY: 5593 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5594 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5595 break; 5596 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5597 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5598 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5599 break; 5600 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5601 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5602 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5603 break; 5604 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5605 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5606 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5607 break; 5608 default: 5609 break; 5610 } 5611 return true; 5612 } 5613 return false; 5614 } 5615 #endif 5616 5617 #ifdef ENABLE_BLE 5618 5619 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5620 static uint8_t hci_le_num_phys(uint8_t phys){ 5621 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5622 btstack_assert(phys); 5623 return num_bits_set[phys]; 5624 } 5625 #endif 5626 5627 #ifdef ENABLE_LE_CENTRAL 5628 static void hci_le_scan_stop(void){ 5629 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5630 if (hci_extended_advertising_supported()) { 5631 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5632 } else 5633 #endif 5634 { 5635 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5636 } 5637 } 5638 5639 static void 5640 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5641 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5642 if (hci_extended_advertising_supported()) { 5643 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5644 uint16_t le_connection_scan_interval[3]; 5645 uint16_t le_connection_scan_window[3]; 5646 uint16_t le_connection_interval_min[3]; 5647 uint16_t le_connection_interval_max[3]; 5648 uint16_t le_connection_latency[3]; 5649 uint16_t le_supervision_timeout[3]; 5650 uint16_t le_minimum_ce_length[3]; 5651 uint16_t le_maximum_ce_length[3]; 5652 5653 uint8_t i; 5654 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5655 for (i=0;i<num_phys;i++){ 5656 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5657 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5658 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5659 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5660 le_connection_latency[i] = hci_stack->le_connection_latency; 5661 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5662 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5663 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5664 } 5665 hci_send_cmd(&hci_le_extended_create_connection, 5666 initiator_filter_policy, 5667 hci_stack->le_connection_own_addr_type, // our addr type: 5668 address_type, // peer address type 5669 address, // peer bd addr 5670 hci_stack->le_connection_phys, // initiating PHY 5671 le_connection_scan_interval, // conn scan interval 5672 le_connection_scan_window, // conn scan windows 5673 le_connection_interval_min, // conn interval min 5674 le_connection_interval_max, // conn interval max 5675 le_connection_latency, // conn latency 5676 le_supervision_timeout, // conn latency 5677 le_minimum_ce_length, // min ce length 5678 le_maximum_ce_length // max ce length 5679 ); 5680 } else 5681 #endif 5682 { 5683 hci_send_cmd(&hci_le_create_connection, 5684 hci_stack->le_connection_scan_interval, // conn scan interval 5685 hci_stack->le_connection_scan_window, // conn scan windows 5686 initiator_filter_policy, // don't use whitelist 5687 address_type, // peer address type 5688 address, // peer bd addr 5689 hci_stack->le_connection_own_addr_type, // our addr type: 5690 hci_stack->le_connection_interval_min, // conn interval min 5691 hci_stack->le_connection_interval_max, // conn interval max 5692 hci_stack->le_connection_latency, // conn latency 5693 hci_stack->le_supervision_timeout, // conn latency 5694 hci_stack->le_minimum_ce_length, // min ce length 5695 hci_stack->le_maximum_ce_length // max ce length 5696 ); 5697 } 5698 } 5699 #endif 5700 5701 #ifdef ENABLE_LE_PERIPHERAL 5702 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5703 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5704 uint8_t operation = 0; 5705 if (pos == 0){ 5706 // first fragment or complete data 5707 operation |= 1; 5708 } 5709 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5710 // last fragment or complete data 5711 operation |= 2; 5712 } 5713 return operation; 5714 } 5715 #endif 5716 #endif 5717 5718 static bool hci_run_general_gap_le(void){ 5719 5720 btstack_linked_list_iterator_t lit; 5721 5722 // Phase 1: collect what to stop 5723 5724 #ifdef ENABLE_LE_CENTRAL 5725 bool scanning_stop = false; 5726 bool connecting_stop = false; 5727 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5728 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5729 bool periodic_sync_stop = false; 5730 #endif 5731 #endif 5732 #endif 5733 5734 #ifdef ENABLE_LE_PERIPHERAL 5735 bool advertising_stop = false; 5736 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5737 le_advertising_set_t * advertising_stop_set = NULL; 5738 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5739 bool periodic_advertising_stop = false; 5740 #endif 5741 #endif 5742 #endif 5743 5744 // check if own address changes 5745 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5746 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5747 5748 // check if whitelist needs modification 5749 bool whitelist_modification_pending = false; 5750 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5751 while (btstack_linked_list_iterator_has_next(&lit)){ 5752 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5753 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5754 whitelist_modification_pending = true; 5755 break; 5756 } 5757 } 5758 5759 // check if resolving list needs modification 5760 bool resolving_list_modification_pending = false; 5761 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5762 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5763 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5764 resolving_list_modification_pending = true; 5765 } 5766 #endif 5767 5768 #ifdef ENABLE_LE_CENTRAL 5769 5770 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5771 // check if periodic advertiser list needs modification 5772 bool periodic_list_modification_pending = false; 5773 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5774 while (btstack_linked_list_iterator_has_next(&lit)){ 5775 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5776 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5777 periodic_list_modification_pending = true; 5778 break; 5779 } 5780 } 5781 #endif 5782 5783 // scanning control 5784 if (hci_stack->le_scanning_active) { 5785 // stop if: 5786 // - parameter change required 5787 // - it's disabled 5788 // - whitelist change required but used for scanning 5789 // - resolving list modified 5790 // - own address changes 5791 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5792 if ((hci_stack->le_scanning_param_update) || 5793 !hci_stack->le_scanning_enabled || 5794 (scanning_uses_whitelist && whitelist_modification_pending) || 5795 resolving_list_modification_pending || 5796 random_address_change){ 5797 5798 scanning_stop = true; 5799 } 5800 } 5801 5802 // connecting control 5803 bool connecting_with_whitelist; 5804 switch (hci_stack->le_connecting_state){ 5805 case LE_CONNECTING_DIRECT: 5806 case LE_CONNECTING_WHITELIST: 5807 // stop connecting if: 5808 // - connecting uses white and whitelist modification pending 5809 // - if it got disabled 5810 // - resolving list modified 5811 // - own address changes 5812 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5813 if ((connecting_with_whitelist && whitelist_modification_pending) || 5814 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5815 resolving_list_modification_pending || 5816 random_address_change) { 5817 5818 connecting_stop = true; 5819 } 5820 break; 5821 default: 5822 break; 5823 } 5824 5825 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5826 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5827 // periodic sync control 5828 bool sync_with_advertiser_list; 5829 switch(hci_stack->le_periodic_sync_state){ 5830 case LE_CONNECTING_DIRECT: 5831 case LE_CONNECTING_WHITELIST: 5832 // stop sync if: 5833 // - sync with advertiser list and advertiser list modification pending 5834 // - if it got disabled 5835 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5836 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5837 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5838 periodic_sync_stop = true; 5839 } 5840 break; 5841 default: 5842 break; 5843 } 5844 #endif 5845 #endif 5846 5847 #endif /* ENABLE_LE_CENTRAL */ 5848 5849 #ifdef ENABLE_LE_PERIPHERAL 5850 // le advertisement control 5851 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5852 // stop if: 5853 // - parameter change required 5854 // - random address used in advertising and changes 5855 // - it's disabled 5856 // - whitelist change required but used for advertisement filter policy 5857 // - resolving list modified 5858 // - own address changes 5859 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5860 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5861 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5862 if (advertising_change || 5863 (advertising_uses_random_address && random_address_change) || 5864 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5865 (advertising_uses_whitelist && whitelist_modification_pending) || 5866 resolving_list_modification_pending || 5867 random_address_change) { 5868 5869 advertising_stop = true; 5870 } 5871 } 5872 5873 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5874 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5875 btstack_linked_list_iterator_t it; 5876 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5877 while (btstack_linked_list_iterator_has_next(&it)){ 5878 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5879 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5880 // stop if: 5881 // - parameter change required 5882 // - random address used in connectable advertising and changes 5883 // - it's disabled 5884 // - whitelist change required but used for advertisement filter policy 5885 // - resolving list modified 5886 // - own address changes 5887 // - advertisement set will be removed 5888 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5889 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5890 bool advertising_uses_random_address = 5891 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5892 advertising_connectable; 5893 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5894 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5895 bool advertising_set_random_address_change = 5896 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5897 bool advertising_set_will_be_removed = 5898 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5899 if (advertising_parameter_change || 5900 (advertising_uses_random_address && advertising_set_random_address_change) || 5901 (advertising_enabled == false) || 5902 (advertising_uses_whitelist && whitelist_modification_pending) || 5903 resolving_list_modification_pending || 5904 advertising_set_will_be_removed) { 5905 5906 advertising_stop = true; 5907 advertising_stop_set = advertising_set; 5908 break; 5909 } 5910 } 5911 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5912 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5913 // stop if: 5914 // - it's disabled 5915 // - parameter change required 5916 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5917 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5918 if ((periodic_enabled == false) || periodic_parameter_change){ 5919 periodic_advertising_stop = true; 5920 advertising_stop_set = advertising_set; 5921 } 5922 } 5923 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5924 } 5925 } 5926 #endif 5927 5928 #endif 5929 5930 5931 // Phase 2: stop everything that should be off during modifications 5932 5933 5934 // 2.1 Outgoing connection 5935 #ifdef ENABLE_LE_CENTRAL 5936 if (connecting_stop){ 5937 hci_send_cmd(&hci_le_create_connection_cancel); 5938 return true; 5939 } 5940 #endif 5941 5942 // 2.2 Scanning 5943 #ifdef ENABLE_LE_CENTRAL 5944 if (scanning_stop){ 5945 hci_stack->le_scanning_active = false; 5946 hci_le_scan_stop(); 5947 return true; 5948 } 5949 5950 // 2.3 Periodic Sync 5951 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5952 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5953 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5954 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5955 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5956 return true; 5957 } 5958 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5959 if (periodic_sync_stop){ 5960 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5961 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5962 return true; 5963 } 5964 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5965 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5966 #endif /* ENABLE_LE_CENTRAL */ 5967 5968 // 2.4 Advertising: legacy, extended, periodic 5969 #ifdef ENABLE_LE_PERIPHERAL 5970 if (advertising_stop){ 5971 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5972 if (hci_extended_advertising_supported()) { 5973 uint8_t advertising_stop_handle; 5974 if (advertising_stop_set != NULL){ 5975 advertising_stop_handle = advertising_stop_set->advertising_handle; 5976 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5977 } else { 5978 advertising_stop_handle = 0; 5979 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5980 } 5981 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5982 const uint16_t durations[] = { 0 }; 5983 const uint16_t max_events[] = { 0 }; 5984 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5985 } else 5986 #endif 5987 { 5988 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5989 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5990 } 5991 return true; 5992 } 5993 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5994 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5995 if (periodic_advertising_stop){ 5996 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5997 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5998 return true; 5999 } 6000 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6001 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6002 #endif /* ENABLE_LE_PERIPHERAL */ 6003 6004 6005 // Phase 3: modify 6006 6007 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6008 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6009 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6010 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6011 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6012 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6013 #endif 6014 return true; 6015 } 6016 6017 #ifdef ENABLE_LE_CENTRAL 6018 if (hci_stack->le_scanning_param_update){ 6019 hci_stack->le_scanning_param_update = false; 6020 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6021 if (hci_extended_advertising_supported()){ 6022 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6023 uint8_t scan_types[2]; 6024 uint16_t scan_intervals[2]; 6025 uint16_t scan_windows[2]; 6026 6027 uint8_t i; 6028 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6029 for (i=0;i<num_phys;i++){ 6030 scan_types[i] = hci_stack->le_scan_type; 6031 scan_intervals[i] = hci_stack->le_scan_interval; 6032 scan_windows[i] = hci_stack->le_scan_window; 6033 } 6034 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6035 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6036 } else 6037 #endif 6038 { 6039 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6040 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6041 } 6042 return true; 6043 } 6044 #endif 6045 6046 #ifdef ENABLE_LE_PERIPHERAL 6047 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6048 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6049 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6050 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6051 if (hci_extended_advertising_supported()){ 6052 // map advertisment type to advertising event properties 6053 uint16_t adv_event_properties = 0; 6054 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6055 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6056 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6057 } 6058 hci_stack->le_advertising_set_in_current_command = 0; 6059 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6060 0, 6061 adv_event_properties, 6062 hci_stack->le_advertisements_interval_min, 6063 hci_stack->le_advertisements_interval_max, 6064 hci_stack->le_advertisements_channel_map, 6065 hci_stack->le_advertisements_own_addr_type, 6066 hci_stack->le_advertisements_direct_address_type, 6067 hci_stack->le_advertisements_direct_address, 6068 hci_stack->le_advertisements_filter_policy, 6069 0x7f, // tx power: no preference 6070 0x01, // primary adv phy: LE 1M 6071 0, // secondary adv max skip 6072 0, // secondary adv phy 6073 0, // adv sid 6074 0 // scan request notification 6075 ); 6076 } else 6077 #endif 6078 { 6079 hci_send_cmd(&hci_le_set_advertising_parameters, 6080 hci_stack->le_advertisements_interval_min, 6081 hci_stack->le_advertisements_interval_max, 6082 hci_stack->le_advertisements_type, 6083 hci_stack->le_advertisements_own_addr_type, 6084 hci_stack->le_advertisements_direct_address_type, 6085 hci_stack->le_advertisements_direct_address, 6086 hci_stack->le_advertisements_channel_map, 6087 hci_stack->le_advertisements_filter_policy); 6088 } 6089 return true; 6090 } 6091 6092 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6093 // assumption: only set if extended advertising is supported 6094 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6095 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6096 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6097 return true; 6098 } 6099 #endif 6100 6101 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6102 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6103 uint8_t adv_data_clean[31]; 6104 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6105 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6106 hci_stack->le_advertisements_data_len); 6107 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6108 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6109 if (hci_extended_advertising_supported()){ 6110 hci_stack->le_advertising_set_in_current_command = 0; 6111 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6112 } else 6113 #endif 6114 { 6115 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6116 } 6117 return true; 6118 } 6119 6120 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6121 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6122 uint8_t scan_data_clean[31]; 6123 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6124 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6125 hci_stack->le_scan_response_data_len); 6126 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6127 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6128 if (hci_extended_advertising_supported()){ 6129 hci_stack->le_advertising_set_in_current_command = 0; 6130 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6131 } else 6132 #endif 6133 { 6134 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6135 } 6136 return true; 6137 } 6138 6139 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6140 if (hci_extended_advertising_supported()) { 6141 btstack_linked_list_iterator_t it; 6142 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6143 while (btstack_linked_list_iterator_has_next(&it)){ 6144 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6145 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6146 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6147 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6148 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6149 return true; 6150 } 6151 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6152 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6153 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6154 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6155 advertising_set->advertising_handle, 6156 advertising_set->extended_params.advertising_event_properties, 6157 advertising_set->extended_params.primary_advertising_interval_min, 6158 advertising_set->extended_params.primary_advertising_interval_max, 6159 advertising_set->extended_params.primary_advertising_channel_map, 6160 advertising_set->extended_params.own_address_type, 6161 advertising_set->extended_params.peer_address_type, 6162 advertising_set->extended_params.peer_address, 6163 advertising_set->extended_params.advertising_filter_policy, 6164 advertising_set->extended_params.advertising_tx_power, 6165 advertising_set->extended_params.primary_advertising_phy, 6166 advertising_set->extended_params.secondary_advertising_max_skip, 6167 advertising_set->extended_params.secondary_advertising_phy, 6168 advertising_set->extended_params.advertising_sid, 6169 advertising_set->extended_params.scan_request_notification_enable 6170 ); 6171 return true; 6172 } 6173 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6174 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6175 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6176 return true; 6177 } 6178 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6179 uint16_t pos = advertising_set->adv_data_pos; 6180 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6181 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6182 if ((operation & 0x02) != 0){ 6183 // last fragment or complete data 6184 operation |= 2; 6185 advertising_set->adv_data_pos = 0; 6186 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6187 } else { 6188 advertising_set->adv_data_pos += data_to_upload; 6189 } 6190 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6191 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6192 return true; 6193 } 6194 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6195 uint16_t pos = advertising_set->scan_data_pos; 6196 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6197 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6198 if ((operation & 0x02) != 0){ 6199 advertising_set->scan_data_pos = 0; 6200 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6201 } else { 6202 advertising_set->scan_data_pos += data_to_upload; 6203 } 6204 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6205 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6206 return true; 6207 } 6208 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6209 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6210 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6211 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6212 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6213 advertising_set->advertising_handle, 6214 advertising_set->periodic_params.periodic_advertising_interval_min, 6215 advertising_set->periodic_params.periodic_advertising_interval_max, 6216 advertising_set->periodic_params.periodic_advertising_properties); 6217 return true; 6218 } 6219 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6220 uint16_t pos = advertising_set->periodic_data_pos; 6221 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6222 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6223 if ((operation & 0x02) != 0){ 6224 // last fragment or complete data 6225 operation |= 2; 6226 advertising_set->periodic_data_pos = 0; 6227 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6228 } else { 6229 advertising_set->periodic_data_pos += data_to_upload; 6230 } 6231 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6232 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6233 return true; 6234 } 6235 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6236 } 6237 } 6238 #endif 6239 6240 #endif 6241 6242 #ifdef ENABLE_LE_CENTRAL 6243 // if connect with whitelist was active and is not cancelled yet, wait until next time 6244 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6245 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6246 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6247 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6248 #endif 6249 #endif 6250 6251 // LE Whitelist Management 6252 if (whitelist_modification_pending){ 6253 // add/remove entries 6254 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6255 while (btstack_linked_list_iterator_has_next(&lit)){ 6256 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6257 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6258 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6259 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6260 return true; 6261 } 6262 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6263 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6264 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6265 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6266 return true; 6267 } 6268 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6269 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6270 btstack_memory_whitelist_entry_free(entry); 6271 } 6272 } 6273 } 6274 6275 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6276 // LE Resolving List Management 6277 if (resolving_list_supported) { 6278 uint16_t i; 6279 switch (hci_stack->le_resolving_list_state) { 6280 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6281 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6282 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6283 return true; 6284 case LE_RESOLVING_LIST_READ_SIZE: 6285 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6286 hci_send_cmd(&hci_le_read_resolving_list_size); 6287 return true; 6288 case LE_RESOLVING_LIST_SEND_CLEAR: 6289 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6290 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6291 sizeof(hci_stack->le_resolving_list_add_entries)); 6292 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6293 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6294 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6295 sizeof(hci_stack->le_resolving_list_remove_entries)); 6296 hci_send_cmd(&hci_le_clear_resolving_list); 6297 return true; 6298 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6299 // first remove old entries 6300 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6301 uint8_t offset = i >> 3; 6302 uint8_t mask = 1 << (i & 7); 6303 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6304 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6305 bd_addr_t peer_identity_addreses; 6306 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6307 sm_key_t peer_irk; 6308 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6309 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6310 6311 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6312 // trigger whitelist entry 'update' (work around for controller bug) 6313 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6314 while (btstack_linked_list_iterator_has_next(&lit)) { 6315 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6316 if (entry->address_type != peer_identity_addr_type) continue; 6317 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6318 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6319 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6320 } 6321 #endif 6322 6323 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6324 peer_identity_addreses); 6325 return true; 6326 } 6327 6328 // then add new entries 6329 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6330 uint8_t offset = i >> 3; 6331 uint8_t mask = 1 << (i & 7); 6332 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6333 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6334 bd_addr_t peer_identity_addreses; 6335 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6336 sm_key_t peer_irk; 6337 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6338 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6339 if (btstack_is_null(peer_irk, 16)) continue; 6340 const uint8_t *local_irk = gap_get_persistent_irk(); 6341 // command uses format specifier 'P' that stores 16-byte value without flip 6342 uint8_t local_irk_flipped[16]; 6343 uint8_t peer_irk_flipped[16]; 6344 reverse_128(local_irk, local_irk_flipped); 6345 reverse_128(peer_irk, peer_irk_flipped); 6346 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6347 peer_irk_flipped, local_irk_flipped); 6348 return true; 6349 } 6350 6351 // finally, set privacy mode 6352 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6353 uint8_t offset = i >> 3; 6354 uint8_t mask = 1 << (i & 7); 6355 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6356 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6357 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6358 // Network Privacy Mode is default 6359 continue; 6360 } 6361 bd_addr_t peer_identity_address; 6362 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6363 sm_key_t peer_irk; 6364 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6365 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6366 if (btstack_is_null(peer_irk, 16)) continue; 6367 // command uses format specifier 'P' that stores 16-byte value without flip 6368 uint8_t peer_irk_flipped[16]; 6369 reverse_128(peer_irk, peer_irk_flipped); 6370 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6371 return true; 6372 } 6373 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6374 break; 6375 6376 default: 6377 break; 6378 } 6379 } 6380 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6381 #endif 6382 6383 #ifdef ENABLE_LE_CENTRAL 6384 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6385 // LE Whitelist Management 6386 if (periodic_list_modification_pending){ 6387 // add/remove entries 6388 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6389 while (btstack_linked_list_iterator_has_next(&lit)){ 6390 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6391 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6392 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6393 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6394 return true; 6395 } 6396 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6397 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6398 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6399 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6400 return true; 6401 } 6402 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6403 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6404 btstack_memory_periodic_advertiser_list_entry_free(entry); 6405 } 6406 } 6407 } 6408 #endif 6409 #endif 6410 6411 #ifdef ENABLE_LE_CENTRAL 6412 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6413 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6414 if (hci_stack->le_past_set_default_params){ 6415 hci_stack->le_past_set_default_params = false; 6416 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6417 hci_stack->le_past_mode, 6418 hci_stack->le_past_skip, 6419 hci_stack->le_past_sync_timeout, 6420 hci_stack->le_past_cte_type); 6421 return true; 6422 } 6423 #endif 6424 #endif 6425 #endif 6426 6427 // post-pone all actions until stack is fully working 6428 if (hci_stack->state != HCI_STATE_WORKING) return false; 6429 6430 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6431 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6432 6433 // Phase 4: restore state 6434 6435 #ifdef ENABLE_LE_CENTRAL 6436 // re-start scanning 6437 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6438 hci_stack->le_scanning_active = true; 6439 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6440 if (hci_extended_advertising_supported()){ 6441 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6442 } else 6443 #endif 6444 { 6445 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6446 } 6447 return true; 6448 } 6449 #endif 6450 6451 #ifdef ENABLE_LE_CENTRAL 6452 // re-start connecting 6453 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6454 bd_addr_t null_addr; 6455 memset(null_addr, 0, 6); 6456 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6457 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6458 hci_send_le_create_connection(1, 0, null_addr); 6459 return true; 6460 } 6461 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6462 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6463 switch(hci_stack->le_periodic_sync_request){ 6464 case LE_CONNECTING_DIRECT: 6465 case LE_CONNECTING_WHITELIST: 6466 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6467 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6468 hci_stack->le_periodic_sync_options, 6469 hci_stack->le_periodic_sync_advertising_sid, 6470 hci_stack->le_periodic_sync_advertiser_address_type, 6471 hci_stack->le_periodic_sync_advertiser_address, 6472 hci_stack->le_periodic_sync_skip, 6473 hci_stack->le_periodic_sync_timeout, 6474 hci_stack->le_periodic_sync_cte_type); 6475 return true; 6476 default: 6477 break; 6478 } 6479 } 6480 #endif 6481 #endif 6482 6483 #ifdef ENABLE_LE_PERIPHERAL 6484 // re-start advertising 6485 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6486 // check if advertisements should be enabled given 6487 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6488 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6489 6490 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6491 if (hci_extended_advertising_supported()){ 6492 const uint8_t advertising_handles[] = { 0 }; 6493 const uint16_t durations[] = { 0 }; 6494 const uint16_t max_events[] = { 0 }; 6495 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6496 } else 6497 #endif 6498 { 6499 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6500 } 6501 return true; 6502 } 6503 6504 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6505 if (hci_extended_advertising_supported()) { 6506 btstack_linked_list_iterator_t it; 6507 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6508 while (btstack_linked_list_iterator_has_next(&it)) { 6509 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6510 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6511 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6512 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6513 const uint16_t durations[] = { advertising_set->enable_timeout }; 6514 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6515 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6516 return true; 6517 } 6518 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6519 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6520 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6521 uint8_t enable = 1; 6522 if (advertising_set->periodic_include_adi){ 6523 enable |= 2; 6524 } 6525 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6526 return true; 6527 } 6528 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6529 } 6530 } 6531 #endif 6532 #endif 6533 6534 return false; 6535 } 6536 6537 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6538 static bool hci_run_iso_tasks(void){ 6539 btstack_linked_list_iterator_t it; 6540 6541 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6542 return false; 6543 } 6544 6545 // BIG 6546 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6547 while (btstack_linked_list_iterator_has_next(&it)){ 6548 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6549 switch (big->state){ 6550 case LE_AUDIO_BIG_STATE_CREATE: 6551 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6552 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6553 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6554 hci_send_cmd(&hci_le_create_big, 6555 big->params->big_handle, 6556 big->params->advertising_handle, 6557 big->params->num_bis, 6558 big->params->sdu_interval_us, 6559 big->params->max_sdu, 6560 big->params->max_transport_latency_ms, 6561 big->params->rtn, 6562 big->params->phy, 6563 big->params->packing, 6564 big->params->framing, 6565 big->params->encryption, 6566 big->params->broadcast_code); 6567 return true; 6568 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6569 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6570 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); 6571 return true; 6572 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6573 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6574 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6575 return true; 6576 case LE_AUDIO_BIG_STATE_TERMINATE: 6577 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6578 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6579 return true; 6580 default: 6581 break; 6582 } 6583 } 6584 6585 // BIG Sync 6586 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6587 while (btstack_linked_list_iterator_has_next(&it)){ 6588 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6589 switch (big_sync->state){ 6590 case LE_AUDIO_BIG_STATE_CREATE: 6591 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6592 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6593 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6594 hci_send_cmd(&hci_le_big_create_sync, 6595 big_sync->params->big_handle, 6596 big_sync->params->sync_handle, 6597 big_sync->params->encryption, 6598 big_sync->params->broadcast_code, 6599 big_sync->params->mse, 6600 big_sync->params->big_sync_timeout_10ms, 6601 big_sync->params->num_bis, 6602 big_sync->params->bis_indices); 6603 return true; 6604 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6605 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6606 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); 6607 return true; 6608 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6609 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6610 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6611 return true; 6612 case LE_AUDIO_BIG_STATE_TERMINATE: 6613 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6614 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6615 return true; 6616 default: 6617 break; 6618 } 6619 } 6620 6621 // CIG 6622 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6623 while (btstack_linked_list_iterator_has_next(&it)) { 6624 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6625 uint8_t i; 6626 // Set CIG Parameters 6627 uint8_t cis_id[MAX_NR_CIS]; 6628 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6629 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6630 uint8_t phy_c_to_p[MAX_NR_CIS]; 6631 uint8_t phy_p_to_c[MAX_NR_CIS]; 6632 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6633 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6634 switch (cig->state) { 6635 case LE_AUDIO_CIG_STATE_CREATE: 6636 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6637 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6638 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6639 le_audio_cig_params_t * params = cig->params; 6640 for (i = 0; i < params->num_cis; i++) { 6641 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6642 cis_id[i] = cis_params->cis_id; 6643 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6644 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6645 phy_c_to_p[i] = cis_params->phy_c_to_p; 6646 phy_p_to_c[i] = cis_params->phy_p_to_c; 6647 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6648 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6649 } 6650 hci_send_cmd(&hci_le_set_cig_parameters, 6651 cig->cig_id, 6652 params->sdu_interval_c_to_p, 6653 params->sdu_interval_p_to_c, 6654 params->worst_case_sca, 6655 params->packing, 6656 params->framing, 6657 params->max_transport_latency_c_to_p, 6658 params->max_transport_latency_p_to_c, 6659 params->num_cis, 6660 cis_id, 6661 max_sdu_c_to_p, 6662 max_sdu_p_to_c, 6663 phy_c_to_p, 6664 phy_p_to_c, 6665 rtn_c_to_p, 6666 rtn_p_to_c 6667 ); 6668 return true; 6669 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6670 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6671 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6672 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6673 for (i=0;i<cig->num_cis;i++){ 6674 cig->cis_setup_active[i] = true; 6675 } 6676 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6677 return true; 6678 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6679 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6680 // find next path to setup 6681 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6682 if (cig->cis_established[cis_index] == false) { 6683 continue; 6684 } 6685 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6686 bool setup = true; 6687 if (cis_direction == 0){ 6688 // 0 - input - host to controller 6689 // we are central => central to peripheral 6690 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6691 } else { 6692 // 1 - output - controller to host 6693 // we are central => peripheral to central 6694 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6695 } 6696 if (setup){ 6697 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6698 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6699 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6700 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6701 return true; 6702 } 6703 cig->state_vars.next_cis++; 6704 } 6705 // emit done 6706 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6707 default: 6708 break; 6709 } 6710 } 6711 6712 // CIS Accept/Reject 6713 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6714 while (btstack_linked_list_iterator_has_next(&it)) { 6715 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6716 hci_con_handle_t con_handle; 6717 switch (iso_stream->state){ 6718 case HCI_ISO_STREAM_W2_ACCEPT: 6719 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6720 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6721 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6722 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->con_handle); 6723 return true; 6724 case HCI_ISO_STREAM_W2_REJECT: 6725 con_handle = iso_stream->con_handle; 6726 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6727 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6728 hci_iso_stream_finalize(iso_stream); 6729 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6730 return true; 6731 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6732 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6733 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6734 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6735 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6736 break; 6737 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6738 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6739 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6740 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6741 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6742 break; 6743 default: 6744 break; 6745 } 6746 } 6747 6748 return false; 6749 } 6750 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6751 #endif 6752 6753 static bool hci_run_general_pending_commands(void){ 6754 btstack_linked_item_t * it; 6755 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6756 hci_connection_t * connection = (hci_connection_t *) it; 6757 6758 switch(connection->state){ 6759 case SEND_CREATE_CONNECTION: 6760 switch(connection->address_type){ 6761 #ifdef ENABLE_CLASSIC 6762 case BD_ADDR_TYPE_ACL: 6763 log_info("sending hci_create_connection"); 6764 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6765 break; 6766 #endif 6767 default: 6768 #ifdef ENABLE_BLE 6769 #ifdef ENABLE_LE_CENTRAL 6770 log_info("sending hci_le_create_connection"); 6771 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6772 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6773 hci_send_le_create_connection(0, connection->address_type, connection->address); 6774 connection->state = SENT_CREATE_CONNECTION; 6775 #endif 6776 #endif 6777 break; 6778 } 6779 return true; 6780 6781 #ifdef ENABLE_CLASSIC 6782 case RECEIVED_CONNECTION_REQUEST: 6783 connection->role = HCI_ROLE_SLAVE; 6784 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6785 log_info("sending hci_accept_connection_request"); 6786 connection->state = ACCEPTED_CONNECTION_REQUEST; 6787 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6788 return true; 6789 } 6790 break; 6791 #endif 6792 case SEND_DISCONNECT: 6793 connection->state = SENT_DISCONNECT; 6794 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6795 return true; 6796 6797 default: 6798 break; 6799 } 6800 6801 // no further commands if connection is about to get shut down 6802 if (connection->state == SENT_DISCONNECT) continue; 6803 6804 #ifdef ENABLE_CLASSIC 6805 6806 // Handling link key request requires remote supported features 6807 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6808 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6809 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6810 6811 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6812 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6813 if (have_link_key && security_level_sufficient){ 6814 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6815 } else { 6816 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6817 } 6818 return true; 6819 } 6820 6821 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6822 log_info("denying to pin request"); 6823 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6824 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6825 return true; 6826 } 6827 6828 // security assessment requires remote features 6829 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6830 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6831 hci_ssp_assess_security_on_io_cap_request(connection); 6832 // 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 6833 } 6834 6835 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6836 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6837 // set authentication requirements: 6838 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6839 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6840 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6841 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6842 authreq |= 1; 6843 } 6844 bool bonding = hci_stack->bondable; 6845 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6846 // if we have received IO Cap Response, we're in responder role 6847 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6848 if (bonding && !remote_bonding){ 6849 log_info("Remote not bonding, dropping local flag"); 6850 bonding = false; 6851 } 6852 } 6853 if (bonding){ 6854 if (connection->bonding_flags & BONDING_DEDICATED){ 6855 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6856 } else { 6857 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6858 } 6859 } 6860 uint8_t have_oob_data = 0; 6861 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6862 if (connection->classic_oob_c_192 != NULL){ 6863 have_oob_data |= 1; 6864 } 6865 if (connection->classic_oob_c_256 != NULL){ 6866 have_oob_data |= 2; 6867 } 6868 #endif 6869 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6870 return true; 6871 } 6872 6873 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6874 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6875 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6876 return true; 6877 } 6878 6879 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6880 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6881 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6882 const uint8_t zero[16] = { 0 }; 6883 const uint8_t * r_192 = zero; 6884 const uint8_t * c_192 = zero; 6885 const uint8_t * r_256 = zero; 6886 const uint8_t * c_256 = zero; 6887 // verify P-256 OOB 6888 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6889 c_256 = connection->classic_oob_c_256; 6890 if (connection->classic_oob_r_256 != NULL) { 6891 r_256 = connection->classic_oob_r_256; 6892 } 6893 } 6894 // verify P-192 OOB 6895 if ((connection->classic_oob_c_192 != NULL)) { 6896 c_192 = connection->classic_oob_c_192; 6897 if (connection->classic_oob_r_192 != NULL) { 6898 r_192 = connection->classic_oob_r_192; 6899 } 6900 } 6901 6902 // assess security 6903 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6904 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6905 if (need_level_4 && !can_reach_level_4){ 6906 log_info("Level 4 required, but not possible -> abort"); 6907 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6908 // send oob negative reply 6909 c_256 = NULL; 6910 c_192 = NULL; 6911 } 6912 6913 // Reply 6914 if (c_256 != zero) { 6915 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6916 } else if (c_192 != zero){ 6917 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6918 } else { 6919 hci_stack->classic_oob_con_handle = connection->con_handle; 6920 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6921 } 6922 return true; 6923 } 6924 #endif 6925 6926 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6927 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6928 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6929 return true; 6930 } 6931 6932 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6933 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6934 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6935 return true; 6936 } 6937 6938 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6939 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6940 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6941 return true; 6942 } 6943 6944 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6945 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6946 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6947 connection->state = SENT_DISCONNECT; 6948 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6949 return true; 6950 } 6951 6952 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6953 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6954 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6955 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6956 return true; 6957 } 6958 6959 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6960 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6961 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6962 return true; 6963 } 6964 6965 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6966 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6967 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6968 return true; 6969 } 6970 6971 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6972 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6973 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6974 return true; 6975 } 6976 6977 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6978 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6979 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6980 return true; 6981 } 6982 6983 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6984 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6985 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6986 return true; 6987 } 6988 #endif 6989 6990 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6991 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6992 #ifdef ENABLE_CLASSIC 6993 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6994 #endif 6995 if (connection->state != SENT_DISCONNECT){ 6996 connection->state = SENT_DISCONNECT; 6997 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6998 return true; 6999 } 7000 } 7001 7002 #ifdef ENABLE_CLASSIC 7003 uint16_t sniff_min_interval; 7004 switch (connection->sniff_min_interval){ 7005 case 0: 7006 break; 7007 case 0xffff: 7008 connection->sniff_min_interval = 0; 7009 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7010 return true; 7011 default: 7012 sniff_min_interval = connection->sniff_min_interval; 7013 connection->sniff_min_interval = 0; 7014 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7015 return true; 7016 } 7017 7018 if (connection->sniff_subrating_max_latency != 0xffff){ 7019 uint16_t max_latency = connection->sniff_subrating_max_latency; 7020 connection->sniff_subrating_max_latency = 0; 7021 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7022 return true; 7023 } 7024 7025 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7026 uint8_t service_type = (uint8_t) connection->qos_service_type; 7027 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7028 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); 7029 return true; 7030 } 7031 7032 if (connection->request_role != HCI_ROLE_INVALID){ 7033 hci_role_t role = connection->request_role; 7034 connection->request_role = HCI_ROLE_INVALID; 7035 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7036 return true; 7037 } 7038 #endif 7039 7040 if (connection->gap_connection_tasks != 0){ 7041 #ifdef ENABLE_CLASSIC 7042 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7043 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7044 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7045 return true; 7046 } 7047 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7048 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7049 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7050 return true; 7051 } 7052 #endif 7053 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7054 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7055 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7056 return true; 7057 } 7058 #ifdef ENABLE_BLE 7059 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7060 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7061 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7062 return true; 7063 } 7064 #endif 7065 } 7066 7067 #ifdef ENABLE_BLE 7068 switch (connection->le_con_parameter_update_state){ 7069 // response to L2CAP CON PARAMETER UPDATE REQUEST 7070 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7071 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7072 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7073 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7074 0x0000, 0xffff); 7075 return true; 7076 case CON_PARAMETER_UPDATE_REPLY: 7077 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7078 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7079 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7080 0x0000, 0xffff); 7081 return true; 7082 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7083 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7084 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7085 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7086 return true; 7087 default: 7088 break; 7089 } 7090 if (connection->le_phy_update_all_phys != 0xffu){ 7091 uint8_t all_phys = connection->le_phy_update_all_phys; 7092 connection->le_phy_update_all_phys = 0xff; 7093 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); 7094 return true; 7095 } 7096 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7097 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7098 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7099 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7100 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7101 return true; 7102 } 7103 #endif 7104 #endif 7105 } 7106 return false; 7107 } 7108 7109 static void hci_run(void){ 7110 7111 // stack state sub statemachines 7112 switch (hci_stack->state) { 7113 case HCI_STATE_INITIALIZING: 7114 hci_initializing_run(); 7115 break; 7116 case HCI_STATE_HALTING: 7117 hci_halting_run(); 7118 break; 7119 case HCI_STATE_FALLING_ASLEEP: 7120 hci_falling_asleep_run(); 7121 break; 7122 default: 7123 break; 7124 } 7125 7126 // allow to run after initialization to working transition 7127 if (hci_stack->state != HCI_STATE_WORKING){ 7128 return; 7129 } 7130 7131 bool done; 7132 7133 // send continuation fragments first, as they block the prepared packet buffer 7134 done = hci_run_acl_fragments(); 7135 if (done) return; 7136 7137 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7138 done = hci_run_iso_fragments(); 7139 if (done) return; 7140 #endif 7141 7142 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7143 // send host num completed packets next as they don't require num_cmd_packets > 0 7144 if (!hci_can_send_comand_packet_transport()) return; 7145 if (hci_stack->host_completed_packets){ 7146 hci_host_num_completed_packets(); 7147 return; 7148 } 7149 #endif 7150 7151 if (!hci_can_send_command_packet_now()) return; 7152 7153 // global/non-connection oriented commands 7154 7155 7156 #ifdef ENABLE_CLASSIC 7157 // general gap classic 7158 done = hci_run_general_gap_classic(); 7159 if (done) return; 7160 #endif 7161 7162 #ifdef ENABLE_BLE 7163 // general gap le 7164 done = hci_run_general_gap_le(); 7165 if (done) return; 7166 7167 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7168 // ISO related tasks, e.g. BIG create/terminate/sync 7169 done = hci_run_iso_tasks(); 7170 if (done) return; 7171 #endif 7172 #endif 7173 7174 // send pending HCI commands 7175 hci_run_general_pending_commands(); 7176 } 7177 7178 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7179 // house-keeping 7180 7181 #ifdef ENABLE_CLASSIC 7182 bd_addr_t addr; 7183 hci_connection_t * conn; 7184 #endif 7185 #ifdef ENABLE_LE_CENTRAL 7186 uint8_t initiator_filter_policy; 7187 #endif 7188 7189 uint16_t opcode = little_endian_read_16(packet, 0); 7190 switch (opcode) { 7191 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7192 hci_stack->loopback_mode = packet[3]; 7193 break; 7194 7195 #ifdef ENABLE_CLASSIC 7196 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7197 reverse_bd_addr(&packet[3], addr); 7198 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7199 7200 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7201 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7202 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7203 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7204 } 7205 7206 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7207 if (!conn) { 7208 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7209 if (!conn) { 7210 // notify client that alloc failed 7211 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7212 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7213 } 7214 conn->state = SEND_CREATE_CONNECTION; 7215 conn->role = HCI_ROLE_MASTER; 7216 } 7217 7218 log_info("conn state %u", conn->state); 7219 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7220 switch (conn->state) { 7221 // if connection active exists 7222 case OPEN: 7223 // and OPEN, emit connection complete command 7224 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7225 // packet not sent to controller 7226 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7227 case RECEIVED_DISCONNECTION_COMPLETE: 7228 // create connection triggered in disconnect complete event, let's do it now 7229 break; 7230 case SEND_CREATE_CONNECTION: 7231 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7232 if (hci_classic_operation_active()){ 7233 return ERROR_CODE_SUCCESS; 7234 } 7235 #endif 7236 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7237 break; 7238 default: 7239 // otherwise, just ignore as it is already in the open process 7240 // packet not sent to controller 7241 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7242 } 7243 conn->state = SENT_CREATE_CONNECTION; 7244 7245 // track outgoing connection 7246 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7247 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7248 break; 7249 7250 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7251 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7252 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7253 if (conn == NULL) { 7254 // neither SCO nor ACL connection for con handle 7255 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7256 } else { 7257 switch (conn->address_type){ 7258 case BD_ADDR_TYPE_ACL: 7259 // assert SCO connection does not exit 7260 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7261 return ERROR_CODE_COMMAND_DISALLOWED; 7262 } 7263 // allocate connection struct 7264 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO); 7265 if (!conn) { 7266 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7267 } 7268 conn->role = HCI_ROLE_MASTER; 7269 break; 7270 case BD_ADDR_TYPE_SCO: 7271 // update of existing SCO connection 7272 break; 7273 default: 7274 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7275 } 7276 } 7277 7278 // conn refers to hci connection of type sco now 7279 7280 conn->state = SENT_CREATE_CONNECTION; 7281 7282 // track outgoing connection to handle command status with error 7283 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7284 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7285 7286 // setup_synchronous_connection? Voice setting at offset 22 7287 // TODO: compare to current setting if sco connection already active 7288 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7289 break; 7290 7291 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7292 // get SCO connection 7293 reverse_bd_addr(&packet[3], addr); 7294 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7295 if (conn == NULL){ 7296 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7297 } 7298 7299 conn->state = ACCEPTED_CONNECTION_REQUEST; 7300 7301 // track outgoing connection to handle command status with error 7302 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7303 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7304 7305 // accept_synchronous_connection? Voice setting at offset 18 7306 // TODO: compare to current setting if sco connection already active 7307 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7308 break; 7309 #endif 7310 #endif 7311 7312 #ifdef ENABLE_BLE 7313 #ifdef ENABLE_LE_CENTRAL 7314 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7315 // white list used? 7316 initiator_filter_policy = packet[7]; 7317 switch (initiator_filter_policy) { 7318 case 0: 7319 // whitelist not used 7320 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7321 break; 7322 case 1: 7323 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7324 break; 7325 default: 7326 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7327 break; 7328 } 7329 // track outgoing connection 7330 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7331 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7332 break; 7333 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7334 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7335 // white list used? 7336 initiator_filter_policy = packet[3]; 7337 switch (initiator_filter_policy) { 7338 case 0: 7339 // whitelist not used 7340 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7341 break; 7342 case 1: 7343 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7344 break; 7345 default: 7346 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7347 break; 7348 } 7349 // track outgoing connection 7350 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7351 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7352 break; 7353 #endif 7354 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7355 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7356 break; 7357 #endif 7358 #endif /* ENABLE_BLE */ 7359 default: 7360 break; 7361 } 7362 7363 hci_stack->num_cmd_packets--; 7364 7365 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7366 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7367 if (err != 0){ 7368 return ERROR_CODE_HARDWARE_FAILURE; 7369 } 7370 return ERROR_CODE_SUCCESS; 7371 } 7372 7373 // disconnect because of security block 7374 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7375 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7376 if (!connection) return; 7377 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7378 } 7379 7380 7381 // Configure Secure Simple Pairing 7382 7383 #ifdef ENABLE_CLASSIC 7384 7385 // enable will enable SSP during init 7386 void gap_ssp_set_enable(int enable){ 7387 hci_stack->ssp_enable = enable; 7388 } 7389 7390 static int hci_local_ssp_activated(void){ 7391 return gap_ssp_supported() && hci_stack->ssp_enable; 7392 } 7393 7394 // if set, BTstack will respond to io capability request using authentication requirement 7395 void gap_ssp_set_io_capability(int io_capability){ 7396 hci_stack->ssp_io_capability = io_capability; 7397 } 7398 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7399 hci_stack->ssp_authentication_requirement = authentication_requirement; 7400 } 7401 7402 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7403 void gap_ssp_set_auto_accept(int auto_accept){ 7404 hci_stack->ssp_auto_accept = auto_accept; 7405 } 7406 7407 void gap_secure_connections_enable(bool enable){ 7408 hci_stack->secure_connections_enable = enable; 7409 } 7410 bool gap_secure_connections_active(void){ 7411 return hci_stack->secure_connections_active; 7412 } 7413 7414 #endif 7415 7416 // va_list part of hci_send_cmd 7417 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7418 if (!hci_can_send_command_packet_now()){ 7419 log_error("hci_send_cmd called but cannot send packet now"); 7420 return ERROR_CODE_COMMAND_DISALLOWED; 7421 } 7422 7423 // for HCI INITIALIZATION 7424 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7425 hci_stack->last_cmd_opcode = cmd->opcode; 7426 7427 hci_reserve_packet_buffer(); 7428 uint8_t * packet = hci_stack->hci_packet_buffer; 7429 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7430 uint8_t status = hci_send_cmd_packet(packet, size); 7431 7432 // release packet buffer on error or for synchronous transport implementations 7433 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7434 hci_release_packet_buffer(); 7435 hci_emit_transport_packet_sent(); 7436 } 7437 7438 return status; 7439 } 7440 7441 /** 7442 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7443 */ 7444 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7445 va_list argptr; 7446 va_start(argptr, cmd); 7447 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7448 va_end(argptr); 7449 return status; 7450 } 7451 7452 // Create various non-HCI events. 7453 // TODO: generalize, use table similar to hci_create_command 7454 7455 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7456 // dump packet 7457 if (dump) { 7458 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7459 } 7460 7461 // dispatch to all event handlers 7462 btstack_linked_list_iterator_t it; 7463 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7464 while (btstack_linked_list_iterator_has_next(&it)){ 7465 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7466 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7467 } 7468 } 7469 7470 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7471 if (!hci_stack->acl_packet_handler) return; 7472 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7473 } 7474 7475 #ifdef ENABLE_CLASSIC 7476 static void hci_notify_if_sco_can_send_now(void){ 7477 // notify SCO sender if waiting 7478 if (!hci_stack->sco_waiting_for_can_send_now) return; 7479 if (hci_can_send_sco_packet_now()){ 7480 hci_stack->sco_waiting_for_can_send_now = 0; 7481 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7482 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7483 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7484 } 7485 } 7486 7487 // parsing end emitting has been merged to reduce code size 7488 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7489 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7490 7491 uint8_t * eir_data; 7492 ad_context_t context; 7493 const uint8_t * name; 7494 uint8_t name_len; 7495 7496 if (size < 3) return; 7497 7498 int event_type = hci_event_packet_get_type(packet); 7499 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7500 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7501 7502 switch (event_type){ 7503 case HCI_EVENT_INQUIRY_RESULT: 7504 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7505 if (size != (3 + (num_responses * 14))) return; 7506 break; 7507 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7508 if (size != 257) return; 7509 if (num_responses != 1) return; 7510 break; 7511 default: 7512 return; 7513 } 7514 7515 // event[1] is set at the end 7516 int i; 7517 for (i=0; i<num_responses;i++){ 7518 memset(event, 0, sizeof(event)); 7519 event[0] = GAP_EVENT_INQUIRY_RESULT; 7520 uint8_t event_size = 27; // if name is not set by EIR 7521 7522 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7523 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7524 (void)memcpy(&event[9], 7525 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7526 3); // class of device 7527 (void)memcpy(&event[12], 7528 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7529 2); // clock offset 7530 7531 switch (event_type){ 7532 case HCI_EVENT_INQUIRY_RESULT: 7533 // 14,15,16,17 = 0, size 18 7534 break; 7535 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7536 event[14] = 1; 7537 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7538 // 16,17 = 0, size 18 7539 break; 7540 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7541 event[14] = 1; 7542 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7543 // EIR packets only contain a single inquiry response 7544 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7545 name = NULL; 7546 // Iterate over EIR data 7547 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7548 uint8_t data_type = ad_iterator_get_data_type(&context); 7549 uint8_t data_size = ad_iterator_get_data_len(&context); 7550 const uint8_t * data = ad_iterator_get_data(&context); 7551 // Prefer Complete Local Name over Shortened Local Name 7552 switch (data_type){ 7553 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7554 if (name) continue; 7555 /* fall through */ 7556 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7557 name = data; 7558 name_len = data_size; 7559 break; 7560 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7561 if (data_size != 8) break; 7562 event[16] = 1; 7563 memcpy(&event[17], data, 8); 7564 break; 7565 default: 7566 break; 7567 } 7568 } 7569 if (name){ 7570 event[25] = 1; 7571 // truncate name if needed 7572 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7573 event[26] = len; 7574 (void)memcpy(&event[27], name, len); 7575 event_size += len; 7576 } 7577 break; 7578 default: 7579 return; 7580 } 7581 event[1] = event_size - 2; 7582 hci_emit_event(event, event_size, 1); 7583 } 7584 } 7585 #endif 7586 7587 void hci_emit_state(void){ 7588 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7589 uint8_t event[3]; 7590 event[0] = BTSTACK_EVENT_STATE; 7591 event[1] = sizeof(event) - 2u; 7592 event[2] = hci_stack->state; 7593 hci_emit_event(event, sizeof(event), 1); 7594 } 7595 7596 #ifdef ENABLE_CLASSIC 7597 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7598 uint8_t event[13]; 7599 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7600 event[1] = sizeof(event) - 2; 7601 event[2] = status; 7602 little_endian_store_16(event, 3, con_handle); 7603 reverse_bd_addr(address, &event[5]); 7604 event[11] = 1; // ACL connection 7605 event[12] = 0; // encryption disabled 7606 hci_emit_event(event, sizeof(event), 1); 7607 } 7608 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7609 if (disable_l2cap_timeouts) return; 7610 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7611 uint8_t event[4]; 7612 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7613 event[1] = sizeof(event) - 2; 7614 little_endian_store_16(event, 2, conn->con_handle); 7615 hci_emit_event(event, sizeof(event), 1); 7616 } 7617 #endif 7618 7619 #ifdef ENABLE_BLE 7620 #ifdef ENABLE_LE_CENTRAL 7621 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){ 7622 uint8_t event[21]; 7623 event[0] = HCI_EVENT_LE_META; 7624 event[1] = sizeof(event) - 2u; 7625 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7626 event[3] = status; 7627 little_endian_store_16(event, 4, con_handle); 7628 event[6] = 0; // TODO: role 7629 event[7] = address_type; 7630 reverse_bd_addr(address, &event[8]); 7631 little_endian_store_16(event, 14, 0); // interval 7632 little_endian_store_16(event, 16, 0); // latency 7633 little_endian_store_16(event, 18, 0); // supervision timeout 7634 event[20] = 0; // master clock accuracy 7635 hci_emit_event(event, sizeof(event), 1); 7636 } 7637 #endif 7638 #endif 7639 7640 static void hci_emit_transport_packet_sent(void){ 7641 // notify upper stack that it might be possible to send again 7642 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7643 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7644 } 7645 7646 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7647 uint8_t event[6]; 7648 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7649 event[1] = sizeof(event) - 2u; 7650 event[2] = 0; // status = OK 7651 little_endian_store_16(event, 3, con_handle); 7652 event[5] = reason; 7653 hci_emit_event(event, sizeof(event), 1); 7654 } 7655 7656 static void hci_emit_nr_connections_changed(void){ 7657 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7658 uint8_t event[3]; 7659 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7660 event[1] = sizeof(event) - 2u; 7661 event[2] = nr_hci_connections(); 7662 hci_emit_event(event, sizeof(event), 1); 7663 } 7664 7665 static void hci_emit_hci_open_failed(void){ 7666 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7667 uint8_t event[2]; 7668 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7669 event[1] = sizeof(event) - 2u; 7670 hci_emit_event(event, sizeof(event), 1); 7671 } 7672 7673 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7674 log_info("hci_emit_dedicated_bonding_result %u ", status); 7675 uint8_t event[9]; 7676 int pos = 0; 7677 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7678 event[pos++] = sizeof(event) - 2u; 7679 event[pos++] = status; 7680 reverse_bd_addr(address, &event[pos]); 7681 hci_emit_event(event, sizeof(event), 1); 7682 } 7683 7684 7685 #ifdef ENABLE_CLASSIC 7686 7687 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7688 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7689 uint8_t event[5]; 7690 int pos = 0; 7691 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7692 event[pos++] = sizeof(event) - 2; 7693 little_endian_store_16(event, 2, con_handle); 7694 pos += 2; 7695 event[pos++] = level; 7696 hci_emit_event(event, sizeof(event), 1); 7697 } 7698 7699 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7700 if (!connection) return LEVEL_0; 7701 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7702 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7703 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7704 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7705 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7706 // LEVEL 4 always requires 128 bit encrytion key size 7707 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7708 security_level = LEVEL_3; 7709 } 7710 return security_level; 7711 } 7712 7713 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7714 uint8_t event[4]; 7715 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7716 event[1] = sizeof(event) - 2; 7717 event[2] = discoverable; 7718 event[3] = connectable; 7719 hci_emit_event(event, sizeof(event), 1); 7720 } 7721 7722 // query if remote side supports eSCO 7723 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7724 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7725 if (!connection) return false; 7726 return (connection->remote_supported_features[0] & 1) != 0; 7727 } 7728 7729 static bool hci_ssp_supported(hci_connection_t * connection){ 7730 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7731 return (connection->bonding_flags & mask) == mask; 7732 } 7733 7734 // query if remote side supports SSP 7735 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7736 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7737 if (!connection) return false; 7738 return hci_ssp_supported(connection) ? 1 : 0; 7739 } 7740 7741 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7742 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7743 } 7744 7745 /** 7746 * Check if remote supported features query has completed 7747 */ 7748 bool hci_remote_features_available(hci_con_handle_t handle){ 7749 hci_connection_t * connection = hci_connection_for_handle(handle); 7750 if (!connection) return false; 7751 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7752 } 7753 7754 /** 7755 * Trigger remote supported features query 7756 */ 7757 7758 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7759 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7760 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7761 } 7762 } 7763 7764 void hci_remote_features_query(hci_con_handle_t con_handle){ 7765 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7766 if (!connection) return; 7767 hci_trigger_remote_features_for_connection(connection); 7768 hci_run(); 7769 } 7770 7771 // GAP API 7772 /** 7773 * @bbrief enable/disable bonding. default is enabled 7774 * @praram enabled 7775 */ 7776 void gap_set_bondable_mode(int enable){ 7777 hci_stack->bondable = enable ? 1 : 0; 7778 } 7779 /** 7780 * @brief Get bondable mode. 7781 * @return 1 if bondable 7782 */ 7783 int gap_get_bondable_mode(void){ 7784 return hci_stack->bondable; 7785 } 7786 7787 /** 7788 * @brief map link keys to security levels 7789 */ 7790 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7791 switch (link_key_type){ 7792 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7793 return LEVEL_4; 7794 case COMBINATION_KEY: 7795 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7796 return LEVEL_3; 7797 default: 7798 return LEVEL_2; 7799 } 7800 } 7801 7802 /** 7803 * @brief map link keys to secure connection yes/no 7804 */ 7805 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7806 switch (link_key_type){ 7807 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7808 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7809 return true; 7810 default: 7811 return false; 7812 } 7813 } 7814 7815 /** 7816 * @brief map link keys to authenticated 7817 */ 7818 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7819 switch (link_key_type){ 7820 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7821 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7822 return true; 7823 default: 7824 return false; 7825 } 7826 } 7827 7828 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7829 log_info("gap_mitm_protection_required_for_security_level %u", level); 7830 return level > LEVEL_2; 7831 } 7832 7833 /** 7834 * @brief get current security level 7835 */ 7836 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7837 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7838 if (!connection) return LEVEL_0; 7839 return gap_security_level_for_connection(connection); 7840 } 7841 7842 /** 7843 * @brief request connection to device to 7844 * @result GAP_AUTHENTICATION_RESULT 7845 */ 7846 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7847 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7848 if (!connection){ 7849 hci_emit_security_level(con_handle, LEVEL_0); 7850 return; 7851 } 7852 7853 btstack_assert(hci_is_le_connection(connection) == false); 7854 7855 // 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) 7856 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7857 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7858 requested_level = LEVEL_4; 7859 } 7860 7861 gap_security_level_t current_level = gap_security_level(con_handle); 7862 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7863 requested_level, connection->requested_security_level, current_level); 7864 7865 // authentication active if authentication request was sent or planned level > 0 7866 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7867 if (authentication_active){ 7868 // authentication already active 7869 if (connection->requested_security_level < requested_level){ 7870 // increase requested level as new level is higher 7871 // TODO: handle re-authentication when done 7872 connection->requested_security_level = requested_level; 7873 } 7874 } else { 7875 // no request active, notify if security sufficient 7876 if (requested_level <= current_level){ 7877 hci_emit_security_level(con_handle, current_level); 7878 return; 7879 } 7880 7881 // store request 7882 connection->requested_security_level = requested_level; 7883 7884 // start to authenticate connection 7885 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7886 7887 // request remote features if not already active, also trigger hci_run 7888 hci_remote_features_query(con_handle); 7889 } 7890 } 7891 7892 /** 7893 * @brief start dedicated bonding with device. disconnect after bonding 7894 * @param device 7895 * @param request MITM protection 7896 * @result GAP_DEDICATED_BONDING_COMPLETE 7897 */ 7898 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7899 7900 // create connection state machine 7901 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7902 7903 if (!connection){ 7904 return BTSTACK_MEMORY_ALLOC_FAILED; 7905 } 7906 7907 // delete linkn key 7908 gap_drop_link_key_for_bd_addr(device); 7909 7910 // configure LEVEL_2/3, dedicated bonding 7911 connection->state = SEND_CREATE_CONNECTION; 7912 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7913 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7914 connection->bonding_flags = BONDING_DEDICATED; 7915 7916 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7917 7918 // handle: connnection failure (connection complete != ok) 7919 // handle: authentication failure 7920 // handle: disconnect on done 7921 7922 hci_run(); 7923 7924 return 0; 7925 } 7926 7927 void gap_set_local_name(const char * local_name){ 7928 hci_stack->local_name = local_name; 7929 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7930 // also update EIR if not set by user 7931 if (hci_stack->eir_data == NULL){ 7932 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7933 } 7934 hci_run(); 7935 } 7936 #endif 7937 7938 7939 #ifdef ENABLE_BLE 7940 7941 #ifdef ENABLE_LE_CENTRAL 7942 void gap_start_scan(void){ 7943 hci_stack->le_scanning_enabled = true; 7944 hci_run(); 7945 } 7946 7947 void gap_stop_scan(void){ 7948 hci_stack->le_scanning_enabled = false; 7949 hci_run(); 7950 } 7951 7952 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7953 hci_stack->le_scan_type = scan_type; 7954 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7955 hci_stack->le_scan_interval = scan_interval; 7956 hci_stack->le_scan_window = scan_window; 7957 hci_stack->le_scanning_param_update = true; 7958 hci_run(); 7959 } 7960 7961 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7962 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7963 } 7964 7965 void gap_set_scan_duplicate_filter(bool enabled){ 7966 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 7967 } 7968 7969 void gap_set_scan_phys(uint8_t phys){ 7970 // LE Coded and LE 1M PHY 7971 hci_stack->le_scan_phys = phys & 0x05; 7972 } 7973 7974 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7975 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7976 if (!conn){ 7977 // disallow if le connection is already outgoing 7978 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7979 log_error("le connection already active"); 7980 return ERROR_CODE_COMMAND_DISALLOWED; 7981 } 7982 7983 log_info("gap_connect: no connection exists yet, creating context"); 7984 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7985 if (!conn){ 7986 // notify client that alloc failed 7987 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7988 log_info("gap_connect: failed to alloc hci_connection_t"); 7989 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7990 } 7991 7992 // set le connecting state 7993 if (hci_is_le_connection_type(addr_type)){ 7994 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7995 } 7996 7997 conn->state = SEND_CREATE_CONNECTION; 7998 log_info("gap_connect: send create connection next"); 7999 hci_run(); 8000 return ERROR_CODE_SUCCESS; 8001 } 8002 8003 if (!hci_is_le_connection(conn) || 8004 (conn->state == SEND_CREATE_CONNECTION) || 8005 (conn->state == SENT_CREATE_CONNECTION)) { 8006 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8007 log_error("gap_connect: classic connection or connect is already being created"); 8008 return GATT_CLIENT_IN_WRONG_STATE; 8009 } 8010 8011 // check if connection was just disconnected 8012 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8013 log_info("gap_connect: send create connection (again)"); 8014 conn->state = SEND_CREATE_CONNECTION; 8015 hci_run(); 8016 return ERROR_CODE_SUCCESS; 8017 } 8018 8019 log_info("gap_connect: context exists with state %u", conn->state); 8020 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8021 hci_run(); 8022 return ERROR_CODE_SUCCESS; 8023 } 8024 8025 // @assumption: only a single outgoing LE Connection exists 8026 static hci_connection_t * gap_get_outgoing_connection(void){ 8027 btstack_linked_item_t *it; 8028 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8029 hci_connection_t * conn = (hci_connection_t *) it; 8030 if (!hci_is_le_connection(conn)) continue; 8031 switch (conn->state){ 8032 case SEND_CREATE_CONNECTION: 8033 case SENT_CREATE_CONNECTION: 8034 return conn; 8035 default: 8036 break; 8037 }; 8038 } 8039 return NULL; 8040 } 8041 8042 uint8_t gap_connect_cancel(void){ 8043 hci_connection_t * conn; 8044 switch (hci_stack->le_connecting_request){ 8045 case LE_CONNECTING_IDLE: 8046 break; 8047 case LE_CONNECTING_WHITELIST: 8048 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8049 hci_run(); 8050 break; 8051 case LE_CONNECTING_DIRECT: 8052 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8053 conn = gap_get_outgoing_connection(); 8054 if (conn == NULL){ 8055 hci_run(); 8056 } else { 8057 switch (conn->state){ 8058 case SEND_CREATE_CONNECTION: 8059 // skip sending create connection and emit event instead 8060 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8061 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8062 btstack_memory_hci_connection_free( conn ); 8063 break; 8064 case SENT_CREATE_CONNECTION: 8065 // let hci_run_general_gap_le cancel outgoing connection 8066 hci_run(); 8067 break; 8068 default: 8069 break; 8070 } 8071 } 8072 break; 8073 default: 8074 btstack_unreachable(); 8075 break; 8076 } 8077 return ERROR_CODE_SUCCESS; 8078 } 8079 8080 /** 8081 * @brief Set connection parameters for outgoing connections 8082 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8083 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8084 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8085 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8086 * @param conn_latency, default: 4 8087 * @param supervision_timeout (unit: 10ms), default: 720 ms 8088 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8089 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8090 */ 8091 8092 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8093 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8094 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8095 hci_stack->le_connection_scan_interval = conn_scan_interval; 8096 hci_stack->le_connection_scan_window = conn_scan_window; 8097 hci_stack->le_connection_interval_min = conn_interval_min; 8098 hci_stack->le_connection_interval_max = conn_interval_max; 8099 hci_stack->le_connection_latency = conn_latency; 8100 hci_stack->le_supervision_timeout = supervision_timeout; 8101 hci_stack->le_minimum_ce_length = min_ce_length; 8102 hci_stack->le_maximum_ce_length = max_ce_length; 8103 } 8104 8105 void gap_set_connection_phys(uint8_t phys){ 8106 // LE Coded, LE 1M, LE 2M PHY 8107 hci_stack->le_connection_phys = phys & 7; 8108 } 8109 8110 #endif 8111 8112 /** 8113 * @brief Updates the connection parameters for a given LE connection 8114 * @param handle 8115 * @param conn_interval_min (unit: 1.25ms) 8116 * @param conn_interval_max (unit: 1.25ms) 8117 * @param conn_latency 8118 * @param supervision_timeout (unit: 10ms) 8119 * @return 0 if ok 8120 */ 8121 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8122 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8123 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8124 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8125 connection->le_conn_interval_min = conn_interval_min; 8126 connection->le_conn_interval_max = conn_interval_max; 8127 connection->le_conn_latency = conn_latency; 8128 connection->le_supervision_timeout = supervision_timeout; 8129 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8130 hci_run(); 8131 return 0; 8132 } 8133 8134 /** 8135 * @brief Request an update of the connection parameter for a given LE connection 8136 * @param handle 8137 * @param conn_interval_min (unit: 1.25ms) 8138 * @param conn_interval_max (unit: 1.25ms) 8139 * @param conn_latency 8140 * @param supervision_timeout (unit: 10ms) 8141 * @return 0 if ok 8142 */ 8143 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8144 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8145 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8146 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8147 connection->le_conn_interval_min = conn_interval_min; 8148 connection->le_conn_interval_max = conn_interval_max; 8149 connection->le_conn_latency = conn_latency; 8150 connection->le_supervision_timeout = supervision_timeout; 8151 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8152 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8153 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8154 return 0; 8155 } 8156 8157 #ifdef ENABLE_LE_PERIPHERAL 8158 8159 /** 8160 * @brief Set Advertisement Data 8161 * @param advertising_data_length 8162 * @param advertising_data (max 31 octets) 8163 * @note data is not copied, pointer has to stay valid 8164 */ 8165 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8166 hci_stack->le_advertisements_data_len = advertising_data_length; 8167 hci_stack->le_advertisements_data = advertising_data; 8168 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8169 hci_run(); 8170 } 8171 8172 /** 8173 * @brief Set Scan Response Data 8174 * @param advertising_data_length 8175 * @param advertising_data (max 31 octets) 8176 * @note data is not copied, pointer has to stay valid 8177 */ 8178 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8179 hci_stack->le_scan_response_data_len = scan_response_data_length; 8180 hci_stack->le_scan_response_data = scan_response_data; 8181 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8182 hci_run(); 8183 } 8184 8185 /** 8186 * @brief Set Advertisement Parameters 8187 * @param adv_int_min 8188 * @param adv_int_max 8189 * @param adv_type 8190 * @param direct_address_type 8191 * @param direct_address 8192 * @param channel_map 8193 * @param filter_policy 8194 * 8195 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8196 */ 8197 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8198 uint8_t direct_address_typ, bd_addr_t direct_address, 8199 uint8_t channel_map, uint8_t filter_policy) { 8200 8201 hci_stack->le_advertisements_interval_min = adv_int_min; 8202 hci_stack->le_advertisements_interval_max = adv_int_max; 8203 hci_stack->le_advertisements_type = adv_type; 8204 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8205 hci_stack->le_advertisements_channel_map = channel_map; 8206 hci_stack->le_advertisements_filter_policy = filter_policy; 8207 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8208 6); 8209 8210 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8211 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8212 hci_run(); 8213 } 8214 8215 /** 8216 * @brief Enable/Disable Advertisements 8217 * @param enabled 8218 */ 8219 void gap_advertisements_enable(int enabled){ 8220 if (enabled == 0){ 8221 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8222 } else { 8223 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8224 } 8225 hci_update_advertisements_enabled_for_current_roles(); 8226 hci_run(); 8227 } 8228 8229 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8230 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8231 btstack_linked_list_iterator_t it; 8232 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8233 while (btstack_linked_list_iterator_has_next(&it)){ 8234 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8235 if ( item->advertising_handle == advertising_handle ) { 8236 return item; 8237 } 8238 } 8239 return NULL; 8240 } 8241 8242 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8243 // find free advertisement handle 8244 uint8_t advertisement_handle; 8245 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8246 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8247 } 8248 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8249 // clear 8250 memset(storage, 0, sizeof(le_advertising_set_t)); 8251 // copy params 8252 storage->advertising_handle = advertisement_handle; 8253 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8254 // add to list 8255 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8256 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8257 *out_advertising_handle = advertisement_handle; 8258 // set tasks and start 8259 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8260 hci_run(); 8261 return ERROR_CODE_SUCCESS; 8262 } 8263 8264 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8265 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8266 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8267 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8268 // set tasks and start 8269 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8270 hci_run(); 8271 return ERROR_CODE_SUCCESS; 8272 } 8273 8274 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8275 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8276 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8277 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8278 return ERROR_CODE_SUCCESS; 8279 } 8280 8281 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8282 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8283 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8284 memcpy(advertising_set->random_address, random_address, 6); 8285 // set tasks and start 8286 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8287 hci_run(); 8288 return ERROR_CODE_SUCCESS; 8289 } 8290 8291 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8292 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8293 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8294 advertising_set->adv_data = advertising_data; 8295 advertising_set->adv_data_len = advertising_data_length; 8296 // set tasks and start 8297 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8298 hci_run(); 8299 return ERROR_CODE_SUCCESS; 8300 } 8301 8302 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){ 8303 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8304 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8305 advertising_set->scan_data = scan_response_data; 8306 advertising_set->scan_data_len = scan_response_data_length; 8307 // set tasks and start 8308 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8309 hci_run(); 8310 return ERROR_CODE_SUCCESS; 8311 } 8312 8313 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8314 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8315 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8316 advertising_set->enable_timeout = timeout; 8317 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8318 // set tasks and start 8319 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8320 hci_run(); 8321 return ERROR_CODE_SUCCESS; 8322 } 8323 8324 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8325 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8326 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8327 // set tasks and start 8328 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8329 hci_run(); 8330 return ERROR_CODE_SUCCESS; 8331 } 8332 8333 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8334 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8335 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8336 // set tasks and start 8337 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8338 hci_run(); 8339 return ERROR_CODE_SUCCESS; 8340 } 8341 8342 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8343 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8344 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8345 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8346 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8347 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8348 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8349 // set tasks and start 8350 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8351 hci_run(); 8352 return ERROR_CODE_SUCCESS; 8353 } 8354 8355 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8356 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8357 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8358 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8359 return ERROR_CODE_SUCCESS; 8360 } 8361 8362 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8363 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8364 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8365 advertising_set->periodic_data = periodic_data; 8366 advertising_set->periodic_data_len = periodic_data_length; 8367 // set tasks and start 8368 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8369 hci_run(); 8370 return ERROR_CODE_SUCCESS; 8371 } 8372 8373 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8374 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8375 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8376 // set tasks and start 8377 advertising_set->periodic_include_adi = include_adi; 8378 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8379 hci_run(); 8380 return ERROR_CODE_SUCCESS; 8381 } 8382 8383 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8384 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8385 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8386 // set tasks and start 8387 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8388 hci_run(); 8389 return ERROR_CODE_SUCCESS; 8390 } 8391 8392 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8393 hci_stack->le_past_mode = mode; 8394 hci_stack->le_past_skip = skip; 8395 hci_stack->le_past_sync_timeout = sync_timeout; 8396 hci_stack->le_past_cte_type = cte_type; 8397 hci_stack->le_past_set_default_params = true; 8398 hci_run(); 8399 return ERROR_CODE_SUCCESS; 8400 } 8401 8402 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8403 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8404 if (hci_connection == NULL){ 8405 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8406 } 8407 hci_connection->le_past_sync_handle = sync_handle; 8408 hci_connection->le_past_service_data = service_data; 8409 hci_run(); 8410 return ERROR_CODE_SUCCESS; 8411 } 8412 8413 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8414 8415 #endif 8416 8417 #endif 8418 8419 void hci_le_set_own_address_type(uint8_t own_address_type){ 8420 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8421 if (own_address_type == hci_stack->le_own_addr_type) return; 8422 hci_stack->le_own_addr_type = own_address_type; 8423 8424 #ifdef ENABLE_LE_PERIPHERAL 8425 // update advertisement parameters, too 8426 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8427 hci_run(); 8428 #endif 8429 #ifdef ENABLE_LE_CENTRAL 8430 // note: we don't update scan parameters or modify ongoing connection attempts 8431 #endif 8432 } 8433 8434 void hci_le_random_address_set(const bd_addr_t random_address){ 8435 memcpy(hci_stack->le_random_address, random_address, 6); 8436 hci_stack->le_random_address_set = true; 8437 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8438 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8439 if (hci_extended_advertising_supported()){ 8440 // force advertising set creation for LE Set Advertising Set Random Address 8441 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8442 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8443 } 8444 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8445 } 8446 #endif 8447 hci_run(); 8448 } 8449 8450 #endif 8451 8452 uint8_t gap_disconnect(hci_con_handle_t handle){ 8453 hci_connection_t * conn = hci_connection_for_handle(handle); 8454 if (!conn){ 8455 hci_emit_disconnection_complete(handle, 0); 8456 return 0; 8457 } 8458 // ignore if already disconnected 8459 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8460 return 0; 8461 } 8462 conn->state = SEND_DISCONNECT; 8463 hci_run(); 8464 return 0; 8465 } 8466 8467 int gap_read_rssi(hci_con_handle_t con_handle){ 8468 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8469 if (hci_connection == NULL) return 0; 8470 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8471 hci_run(); 8472 return 1; 8473 } 8474 8475 /** 8476 * @brief Get connection type 8477 * @param con_handle 8478 * @result connection_type 8479 */ 8480 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8481 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8482 if (!conn) return GAP_CONNECTION_INVALID; 8483 switch (conn->address_type){ 8484 case BD_ADDR_TYPE_LE_PUBLIC: 8485 case BD_ADDR_TYPE_LE_RANDOM: 8486 return GAP_CONNECTION_LE; 8487 case BD_ADDR_TYPE_SCO: 8488 return GAP_CONNECTION_SCO; 8489 case BD_ADDR_TYPE_ACL: 8490 return GAP_CONNECTION_ACL; 8491 default: 8492 return GAP_CONNECTION_INVALID; 8493 } 8494 } 8495 8496 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8497 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8498 if (!conn) return HCI_ROLE_INVALID; 8499 return (hci_role_t) conn->role; 8500 } 8501 8502 8503 #ifdef ENABLE_CLASSIC 8504 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8505 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8506 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8507 conn->request_role = role; 8508 hci_run(); 8509 return ERROR_CODE_SUCCESS; 8510 } 8511 #endif 8512 8513 #ifdef ENABLE_BLE 8514 8515 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){ 8516 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8517 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8518 8519 conn->le_phy_update_all_phys = all_phys; 8520 conn->le_phy_update_tx_phys = tx_phys; 8521 conn->le_phy_update_rx_phys = rx_phys; 8522 conn->le_phy_update_phy_options = phy_options; 8523 8524 hci_run(); 8525 8526 return 0; 8527 } 8528 8529 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8530 // check if already in list 8531 btstack_linked_list_iterator_t it; 8532 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8533 while (btstack_linked_list_iterator_has_next(&it)) { 8534 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8535 if (entry->address_type != address_type) { 8536 continue; 8537 } 8538 if (memcmp(entry->address, address, 6) != 0) { 8539 continue; 8540 } 8541 // disallow if already scheduled to add 8542 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8543 return ERROR_CODE_COMMAND_DISALLOWED; 8544 } 8545 // still on controller, but scheduled to remove -> re-add 8546 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8547 return ERROR_CODE_SUCCESS; 8548 } 8549 // alloc and add to list 8550 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8551 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8552 entry->address_type = address_type; 8553 (void)memcpy(entry->address, address, 6); 8554 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8555 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8556 return ERROR_CODE_SUCCESS; 8557 } 8558 8559 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8560 btstack_linked_list_iterator_t it; 8561 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8562 while (btstack_linked_list_iterator_has_next(&it)){ 8563 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8564 if (entry->address_type != address_type) { 8565 continue; 8566 } 8567 if (memcmp(entry->address, address, 6) != 0) { 8568 continue; 8569 } 8570 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8571 // remove from controller if already present 8572 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8573 } else { 8574 // directly remove entry from whitelist 8575 btstack_linked_list_iterator_remove(&it); 8576 btstack_memory_whitelist_entry_free(entry); 8577 } 8578 return ERROR_CODE_SUCCESS; 8579 } 8580 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8581 } 8582 8583 static void hci_whitelist_clear(void){ 8584 btstack_linked_list_iterator_t it; 8585 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8586 while (btstack_linked_list_iterator_has_next(&it)){ 8587 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8588 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8589 // remove from controller if already present 8590 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8591 continue; 8592 } 8593 // directly remove entry from whitelist 8594 btstack_linked_list_iterator_remove(&it); 8595 btstack_memory_whitelist_entry_free(entry); 8596 } 8597 } 8598 8599 /** 8600 * @brief Clear Whitelist 8601 * @return 0 if ok 8602 */ 8603 uint8_t gap_whitelist_clear(void){ 8604 hci_whitelist_clear(); 8605 hci_run(); 8606 return ERROR_CODE_SUCCESS; 8607 } 8608 8609 /** 8610 * @brief Add Device to Whitelist 8611 * @param address_typ 8612 * @param address 8613 * @return 0 if ok 8614 */ 8615 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8616 uint8_t status = hci_whitelist_add(address_type, address); 8617 if (status){ 8618 return status; 8619 } 8620 hci_run(); 8621 return ERROR_CODE_SUCCESS; 8622 } 8623 8624 /** 8625 * @brief Remove Device from Whitelist 8626 * @param address_typ 8627 * @param address 8628 * @return 0 if ok 8629 */ 8630 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8631 uint8_t status = hci_whitelist_remove(address_type, address); 8632 if (status){ 8633 return status; 8634 } 8635 hci_run(); 8636 return ERROR_CODE_SUCCESS; 8637 } 8638 8639 #ifdef ENABLE_LE_CENTRAL 8640 /** 8641 * @brief Connect with Whitelist 8642 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8643 * @return - if ok 8644 */ 8645 uint8_t gap_connect_with_whitelist(void){ 8646 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8647 return ERROR_CODE_COMMAND_DISALLOWED; 8648 } 8649 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8650 hci_run(); 8651 return ERROR_CODE_SUCCESS; 8652 } 8653 8654 /** 8655 * @brief Auto Connection Establishment - Start Connecting to device 8656 * @param address_typ 8657 * @param address 8658 * @return 0 if ok 8659 */ 8660 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8661 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8662 return ERROR_CODE_COMMAND_DISALLOWED; 8663 } 8664 8665 uint8_t status = hci_whitelist_add(address_type, address); 8666 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8667 return status; 8668 } 8669 8670 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8671 8672 hci_run(); 8673 return ERROR_CODE_SUCCESS; 8674 } 8675 8676 /** 8677 * @brief Auto Connection Establishment - Stop Connecting to device 8678 * @param address_typ 8679 * @param address 8680 * @return 0 if ok 8681 */ 8682 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8683 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8684 return ERROR_CODE_COMMAND_DISALLOWED; 8685 } 8686 8687 hci_whitelist_remove(address_type, address); 8688 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8689 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8690 } 8691 hci_run(); 8692 return 0; 8693 } 8694 8695 /** 8696 * @brief Auto Connection Establishment - Stop everything 8697 * @note Convenience function to stop all active auto connection attempts 8698 */ 8699 uint8_t gap_auto_connection_stop_all(void){ 8700 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8701 return ERROR_CODE_COMMAND_DISALLOWED; 8702 } 8703 hci_whitelist_clear(); 8704 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8705 hci_run(); 8706 return ERROR_CODE_SUCCESS; 8707 } 8708 8709 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8710 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8711 if (!conn) return 0; 8712 return conn->le_connection_interval; 8713 } 8714 #endif 8715 #endif 8716 8717 #ifdef ENABLE_CLASSIC 8718 /** 8719 * @brief Set Extended Inquiry Response data 8720 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8721 * @note has to be done before stack starts up 8722 */ 8723 void gap_set_extended_inquiry_response(const uint8_t * data){ 8724 hci_stack->eir_data = data; 8725 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8726 hci_run(); 8727 } 8728 8729 /** 8730 * @brief Start GAP Classic Inquiry 8731 * @param duration in 1.28s units 8732 * @return 0 if ok 8733 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8734 */ 8735 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8736 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8737 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8738 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8739 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8740 } 8741 hci_stack->inquiry_state = duration_in_1280ms_units; 8742 hci_stack->inquiry_max_period_length = 0; 8743 hci_stack->inquiry_min_period_length = 0; 8744 hci_run(); 8745 return 0; 8746 } 8747 8748 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8749 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8750 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8751 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8752 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8753 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8754 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8755 8756 hci_stack->inquiry_state = duration; 8757 hci_stack->inquiry_max_period_length = max_period_length; 8758 hci_stack->inquiry_min_period_length = min_period_length; 8759 hci_run(); 8760 return 0; 8761 } 8762 8763 /** 8764 * @brief Stop GAP Classic Inquiry 8765 * @return 0 if ok 8766 */ 8767 int gap_inquiry_stop(void){ 8768 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8769 // emit inquiry complete event, before it even started 8770 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8771 hci_emit_event(event, sizeof(event), 1); 8772 return 0; 8773 } 8774 switch (hci_stack->inquiry_state){ 8775 case GAP_INQUIRY_STATE_ACTIVE: 8776 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8777 hci_run(); 8778 return ERROR_CODE_SUCCESS; 8779 case GAP_INQUIRY_STATE_PERIODIC: 8780 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8781 hci_run(); 8782 return ERROR_CODE_SUCCESS; 8783 default: 8784 return ERROR_CODE_COMMAND_DISALLOWED; 8785 } 8786 } 8787 8788 void gap_inquiry_set_lap(uint32_t lap){ 8789 hci_stack->inquiry_lap = lap; 8790 } 8791 8792 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8793 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8794 hci_stack->inquiry_scan_window = inquiry_scan_window; 8795 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8796 hci_run(); 8797 } 8798 8799 8800 /** 8801 * @brief Remote Name Request 8802 * @param addr 8803 * @param page_scan_repetition_mode 8804 * @param clock_offset only used when bit 15 is set 8805 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8806 */ 8807 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8808 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8809 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8810 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8811 hci_stack->remote_name_clock_offset = clock_offset; 8812 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8813 hci_run(); 8814 return 0; 8815 } 8816 8817 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8818 hci_stack->gap_pairing_state = state; 8819 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8820 hci_run(); 8821 return 0; 8822 } 8823 8824 /** 8825 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8826 * @param addr 8827 * @param pin_data 8828 * @param pin_len 8829 * @return 0 if ok 8830 */ 8831 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8832 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8833 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8834 hci_stack->gap_pairing_pin_len = pin_len; 8835 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8836 } 8837 8838 /** 8839 * @brief Legacy Pairing Pin Code Response 8840 * @param addr 8841 * @param pin 8842 * @return 0 if ok 8843 */ 8844 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8845 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8846 } 8847 8848 /** 8849 * @brief Abort Legacy Pairing 8850 * @param addr 8851 * @param pin 8852 * @return 0 if ok 8853 */ 8854 int gap_pin_code_negative(bd_addr_t addr){ 8855 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8856 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8857 } 8858 8859 /** 8860 * @brief SSP Passkey Response 8861 * @param addr 8862 * @param passkey 8863 * @return 0 if ok 8864 */ 8865 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8866 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8867 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8868 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8869 } 8870 8871 /** 8872 * @brief Abort SSP Passkey Entry/Pairing 8873 * @param addr 8874 * @param pin 8875 * @return 0 if ok 8876 */ 8877 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8878 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8879 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8880 } 8881 8882 /** 8883 * @brief Accept SSP Numeric Comparison 8884 * @param addr 8885 * @param passkey 8886 * @return 0 if ok 8887 */ 8888 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8889 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8890 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8891 } 8892 8893 /** 8894 * @brief Abort SSP Numeric Comparison/Pairing 8895 * @param addr 8896 * @param pin 8897 * @return 0 if ok 8898 */ 8899 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8900 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8901 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8902 } 8903 8904 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8905 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8906 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8907 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8908 connectionSetAuthenticationFlags(conn, flag); 8909 hci_run(); 8910 return ERROR_CODE_SUCCESS; 8911 } 8912 #endif 8913 8914 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8915 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8916 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8917 } 8918 8919 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8920 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8921 } 8922 #endif 8923 8924 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8925 /** 8926 * @brief Report Remote OOB Data 8927 * @param bd_addr 8928 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8929 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8930 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8931 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8932 */ 8933 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){ 8934 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8935 if (connection == NULL) { 8936 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8937 } 8938 connection->classic_oob_c_192 = c_192; 8939 connection->classic_oob_r_192 = r_192; 8940 8941 // ignore P-256 if not supported by us 8942 if (hci_stack->secure_connections_active){ 8943 connection->classic_oob_c_256 = c_256; 8944 connection->classic_oob_r_256 = r_256; 8945 } 8946 8947 return ERROR_CODE_SUCCESS; 8948 } 8949 /** 8950 * @brief Generate new OOB data 8951 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8952 */ 8953 void gap_ssp_generate_oob_data(void){ 8954 hci_stack->classic_read_local_oob_data = true; 8955 hci_run(); 8956 } 8957 8958 #endif 8959 8960 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8961 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8962 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8963 if (connection == NULL) { 8964 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8965 } 8966 8967 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8968 connection->link_key_type = type; 8969 8970 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8971 } 8972 8973 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8974 /** 8975 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8976 * @param inquiry_mode see bluetooth_defines.h 8977 */ 8978 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8979 hci_stack->inquiry_mode = inquiry_mode; 8980 } 8981 8982 /** 8983 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8984 */ 8985 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8986 hci_stack->sco_voice_setting = voice_setting; 8987 } 8988 8989 /** 8990 * @brief Get SCO Voice Setting 8991 * @return current voice setting 8992 */ 8993 uint16_t hci_get_sco_voice_setting(void){ 8994 return hci_stack->sco_voice_setting; 8995 } 8996 8997 static int hci_have_usb_transport(void){ 8998 if (!hci_stack->hci_transport) return 0; 8999 const char * transport_name = hci_stack->hci_transport->name; 9000 if (!transport_name) return 0; 9001 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9002 } 9003 9004 /** @brief Get SCO packet length for current SCO Voice setting 9005 * @note Using SCO packets of the exact length is required for USB transfer 9006 * @return Length of SCO packets in bytes (not audio frames) 9007 */ 9008 uint16_t hci_get_sco_packet_length(void){ 9009 uint16_t sco_packet_length = 0; 9010 9011 #ifdef ENABLE_SCO_OVER_HCI 9012 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9013 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9014 9015 if (hci_have_usb_transport()){ 9016 // see Core Spec for H2 USB Transfer. 9017 // 3 byte SCO header + 24 bytes per connection 9018 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 9019 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 9020 } else { 9021 // 3 byte SCO header + SCO packet size over the air (60 bytes) 9022 sco_packet_length = 3 + 60 * multiplier; 9023 // assert that it still fits inside an SCO buffer 9024 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9025 sco_packet_length = 3 + 60; 9026 } 9027 } 9028 #endif 9029 9030 #ifdef HAVE_SCO_TRANSPORT 9031 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9032 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9033 sco_packet_length = 3 + 60 * multiplier; 9034 #endif 9035 return sco_packet_length; 9036 } 9037 9038 /** 9039 * @brief Sets the master/slave policy 9040 * @param policy (0: attempt to become master, 1: let connecting device decide) 9041 */ 9042 void hci_set_master_slave_policy(uint8_t policy){ 9043 hci_stack->master_slave_policy = policy; 9044 } 9045 9046 #endif 9047 9048 HCI_STATE hci_get_state(void){ 9049 return hci_stack->state; 9050 } 9051 9052 #ifdef ENABLE_CLASSIC 9053 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9054 hci_stack->gap_classic_accept_callback = accept_callback; 9055 } 9056 #endif 9057 9058 /** 9059 * @brief Set callback for Bluetooth Hardware Error 9060 */ 9061 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9062 hci_stack->hardware_error_callback = fn; 9063 } 9064 9065 void hci_disconnect_all(void){ 9066 btstack_linked_list_iterator_t it; 9067 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9068 while (btstack_linked_list_iterator_has_next(&it)){ 9069 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9070 if (con->state == SENT_DISCONNECT) continue; 9071 con->state = SEND_DISCONNECT; 9072 } 9073 hci_run(); 9074 } 9075 9076 uint16_t hci_get_manufacturer(void){ 9077 return hci_stack->manufacturer; 9078 } 9079 9080 #ifdef ENABLE_BLE 9081 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9082 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9083 if (!hci_con) return NULL; 9084 return &hci_con->sm_connection; 9085 } 9086 9087 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9088 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9089 #endif 9090 9091 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9092 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9093 if (hci_connection == NULL) return 0; 9094 if (hci_is_le_connection(hci_connection)){ 9095 #ifdef ENABLE_BLE 9096 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9097 if (sm_conn->sm_connection_encrypted) { 9098 return sm_conn->sm_actual_encryption_key_size; 9099 } 9100 #endif 9101 } else { 9102 #ifdef ENABLE_CLASSIC 9103 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9104 return hci_connection->encryption_key_size; 9105 } 9106 #endif 9107 } 9108 return 0; 9109 } 9110 9111 bool gap_authenticated(hci_con_handle_t con_handle){ 9112 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9113 if (hci_connection == NULL) return false; 9114 9115 switch (hci_connection->address_type){ 9116 #ifdef ENABLE_BLE 9117 case BD_ADDR_TYPE_LE_PUBLIC: 9118 case BD_ADDR_TYPE_LE_RANDOM: 9119 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9120 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9121 #endif 9122 #ifdef ENABLE_CLASSIC 9123 case BD_ADDR_TYPE_SCO: 9124 case BD_ADDR_TYPE_ACL: 9125 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9126 #endif 9127 default: 9128 return false; 9129 } 9130 } 9131 9132 bool gap_secure_connection(hci_con_handle_t con_handle){ 9133 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9134 if (hci_connection == NULL) return 0; 9135 9136 switch (hci_connection->address_type){ 9137 #ifdef ENABLE_BLE 9138 case BD_ADDR_TYPE_LE_PUBLIC: 9139 case BD_ADDR_TYPE_LE_RANDOM: 9140 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9141 return hci_connection->sm_connection.sm_connection_sc != 0; 9142 #endif 9143 #ifdef ENABLE_CLASSIC 9144 case BD_ADDR_TYPE_SCO: 9145 case BD_ADDR_TYPE_ACL: 9146 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9147 #endif 9148 default: 9149 return false; 9150 } 9151 } 9152 9153 bool gap_bonded(hci_con_handle_t con_handle){ 9154 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9155 if (hci_connection == NULL) return 0; 9156 9157 #ifdef ENABLE_CLASSIC 9158 link_key_t link_key; 9159 link_key_type_t link_key_type; 9160 #endif 9161 switch (hci_connection->address_type){ 9162 #ifdef ENABLE_BLE 9163 case BD_ADDR_TYPE_LE_PUBLIC: 9164 case BD_ADDR_TYPE_LE_RANDOM: 9165 return hci_connection->sm_connection.sm_le_db_index >= 0; 9166 #endif 9167 #ifdef ENABLE_CLASSIC 9168 case BD_ADDR_TYPE_SCO: 9169 case BD_ADDR_TYPE_ACL: 9170 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9171 #endif 9172 default: 9173 return false; 9174 } 9175 } 9176 9177 #ifdef ENABLE_BLE 9178 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9179 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9180 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9181 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9182 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9183 return sm_conn->sm_connection_authorization_state; 9184 } 9185 #endif 9186 9187 #ifdef ENABLE_CLASSIC 9188 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){ 9189 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9190 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9191 conn->sniff_min_interval = sniff_min_interval; 9192 conn->sniff_max_interval = sniff_max_interval; 9193 conn->sniff_attempt = sniff_attempt; 9194 conn->sniff_timeout = sniff_timeout; 9195 hci_run(); 9196 return 0; 9197 } 9198 9199 /** 9200 * @brief Exit Sniff mode 9201 * @param con_handle 9202 @ @return 0 if ok 9203 */ 9204 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9205 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9206 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9207 conn->sniff_min_interval = 0xffff; 9208 hci_run(); 9209 return 0; 9210 } 9211 9212 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){ 9213 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9214 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9215 conn->sniff_subrating_max_latency = max_latency; 9216 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9217 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9218 hci_run(); 9219 return ERROR_CODE_SUCCESS; 9220 } 9221 9222 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){ 9223 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9224 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9225 conn->qos_service_type = service_type; 9226 conn->qos_token_rate = token_rate; 9227 conn->qos_peak_bandwidth = peak_bandwidth; 9228 conn->qos_latency = latency; 9229 conn->qos_delay_variation = delay_variation; 9230 hci_run(); 9231 return ERROR_CODE_SUCCESS; 9232 } 9233 9234 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9235 hci_stack->new_page_scan_interval = page_scan_interval; 9236 hci_stack->new_page_scan_window = page_scan_window; 9237 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9238 hci_run(); 9239 } 9240 9241 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9242 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9243 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9244 hci_run(); 9245 } 9246 9247 void gap_set_page_timeout(uint16_t page_timeout){ 9248 hci_stack->page_timeout = page_timeout; 9249 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9250 hci_run(); 9251 } 9252 9253 #endif 9254 9255 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9256 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9257 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9258 if (le_device_db_index >= le_device_db_max_count()) return; 9259 uint8_t offset = le_device_db_index >> 3; 9260 uint8_t mask = 1 << (le_device_db_index & 7); 9261 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9262 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9263 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9264 // note: go back to remove entries, otherwise, a remove + add will skip the add 9265 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9266 } 9267 } 9268 9269 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9270 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9271 if (le_device_db_index >= le_device_db_max_count()) return; 9272 uint8_t offset = le_device_db_index >> 3; 9273 uint8_t mask = 1 << (le_device_db_index & 7); 9274 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9275 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9276 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9277 } 9278 } 9279 9280 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9281 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9282 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9283 } 9284 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9285 // restart le resolving list update 9286 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9287 } 9288 return ERROR_CODE_SUCCESS; 9289 } 9290 9291 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9292 hci_stack->le_privacy_mode = privacy_mode; 9293 } 9294 #endif 9295 9296 #ifdef ENABLE_BLE 9297 #ifdef ENABLE_LE_CENTRAL 9298 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9299 9300 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9301 // check if already in list 9302 btstack_linked_list_iterator_t it; 9303 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9304 while (btstack_linked_list_iterator_has_next(&it)) { 9305 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9306 if (entry->sid != advertising_sid) { 9307 continue; 9308 } 9309 if (entry->address_type != address_type) { 9310 continue; 9311 } 9312 if (memcmp(entry->address, address, 6) != 0) { 9313 continue; 9314 } 9315 // disallow if already scheduled to add 9316 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9317 return ERROR_CODE_COMMAND_DISALLOWED; 9318 } 9319 // still on controller, but scheduled to remove -> re-add 9320 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9321 return ERROR_CODE_SUCCESS; 9322 } 9323 // alloc and add to list 9324 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9325 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9326 entry->sid = advertising_sid; 9327 entry->address_type = address_type; 9328 (void)memcpy(entry->address, address, 6); 9329 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9330 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9331 return ERROR_CODE_SUCCESS; 9332 } 9333 9334 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9335 btstack_linked_list_iterator_t it; 9336 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9337 while (btstack_linked_list_iterator_has_next(&it)){ 9338 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9339 if (entry->sid != advertising_sid) { 9340 continue; 9341 } 9342 if (entry->address_type != address_type) { 9343 continue; 9344 } 9345 if (memcmp(entry->address, address, 6) != 0) { 9346 continue; 9347 } 9348 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9349 // remove from controller if already present 9350 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9351 } else { 9352 // directly remove entry from whitelist 9353 btstack_linked_list_iterator_remove(&it); 9354 btstack_memory_periodic_advertiser_list_entry_free(entry); 9355 } 9356 return ERROR_CODE_SUCCESS; 9357 } 9358 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9359 } 9360 9361 static void hci_periodic_advertiser_list_clear(void){ 9362 btstack_linked_list_iterator_t it; 9363 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9364 while (btstack_linked_list_iterator_has_next(&it)){ 9365 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9366 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9367 // remove from controller if already present 9368 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9369 continue; 9370 } 9371 // directly remove entry from whitelist 9372 btstack_linked_list_iterator_remove(&it); 9373 btstack_memory_periodic_advertiser_list_entry_free(entry); 9374 } 9375 } 9376 9377 uint8_t gap_periodic_advertiser_list_clear(void){ 9378 hci_periodic_advertiser_list_clear(); 9379 hci_run(); 9380 return ERROR_CODE_SUCCESS; 9381 } 9382 9383 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9384 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9385 if (status){ 9386 return status; 9387 } 9388 hci_run(); 9389 return ERROR_CODE_SUCCESS; 9390 } 9391 9392 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9393 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9394 if (status){ 9395 return status; 9396 } 9397 hci_run(); 9398 return ERROR_CODE_SUCCESS; 9399 } 9400 9401 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9402 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9403 // abort if already active 9404 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9405 return ERROR_CODE_COMMAND_DISALLOWED; 9406 } 9407 // store request 9408 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9409 hci_stack->le_periodic_sync_options = options; 9410 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9411 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9412 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9413 hci_stack->le_periodic_sync_skip = skip; 9414 hci_stack->le_periodic_sync_timeout = sync_timeout; 9415 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9416 9417 hci_run(); 9418 return ERROR_CODE_SUCCESS; 9419 } 9420 9421 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9422 // abort if not requested 9423 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9424 return ERROR_CODE_COMMAND_DISALLOWED; 9425 } 9426 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9427 hci_run(); 9428 return ERROR_CODE_SUCCESS; 9429 } 9430 9431 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9432 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9433 return ERROR_CODE_COMMAND_DISALLOWED; 9434 } 9435 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9436 hci_run(); 9437 return ERROR_CODE_SUCCESS; 9438 } 9439 9440 #endif 9441 #endif 9442 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9443 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 9444 hci_iso_stream_state_t state) { 9445 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9446 if (iso_stream == NULL){ 9447 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9448 } else { 9449 iso_stream->iso_type = iso_type; 9450 iso_stream->state = state; 9451 iso_stream->con_handle = con_handle; 9452 iso_stream->group_id = group_id; 9453 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9454 return ERROR_CODE_SUCCESS; 9455 } 9456 } 9457 9458 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9459 btstack_linked_list_iterator_t it; 9460 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9461 while (btstack_linked_list_iterator_has_next(&it)){ 9462 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9463 if (iso_stream->con_handle == con_handle ) { 9464 return iso_stream; 9465 } 9466 } 9467 return NULL; 9468 } 9469 9470 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9471 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->con_handle, iso_stream->group_id); 9472 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9473 btstack_memory_hci_iso_stream_free(iso_stream); 9474 } 9475 9476 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9477 btstack_linked_list_iterator_t it; 9478 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9479 while (btstack_linked_list_iterator_has_next(&it)){ 9480 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9481 if ((iso_stream->group_id == group_id) && 9482 (iso_stream->iso_type == iso_type)){ 9483 btstack_linked_list_iterator_remove(&it); 9484 btstack_memory_hci_iso_stream_free(iso_stream); 9485 } 9486 } 9487 } 9488 9489 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9490 btstack_linked_list_iterator_t it; 9491 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9492 while (btstack_linked_list_iterator_has_next(&it)){ 9493 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9494 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9495 (iso_stream->group_id == group_id)){ 9496 btstack_linked_list_iterator_remove(&it); 9497 btstack_memory_hci_iso_stream_free(iso_stream); 9498 } 9499 } 9500 } 9501 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9502 btstack_linked_list_iterator_t it; 9503 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9504 while (btstack_linked_list_iterator_has_next(&it)){ 9505 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9506 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9507 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9508 } 9509 } 9510 } 9511 9512 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9513 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9514 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9515 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9516 return (sdu_len_offset + 2 + sdu_len) == size; 9517 } 9518 9519 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9520 if (hci_stack->iso_packet_handler == NULL) { 9521 return; 9522 } 9523 if (size < 4) { 9524 return; 9525 } 9526 9527 // parse header 9528 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9529 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9530 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9531 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9532 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9533 9534 // assert packet is complete 9535 if ((iso_data_len + 4u) != size){ 9536 return; 9537 } 9538 9539 if ((pb_flag & 0x01) == 0){ 9540 if (pb_flag == 0x02){ 9541 // The ISO_Data_Load field contains a header and a complete SDU. 9542 if (hci_iso_sdu_complete(packet, size)) { 9543 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9544 } 9545 } else { 9546 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9547 if (iso_stream == NULL){ 9548 return; 9549 } 9550 if (size > HCI_ISO_PAYLOAD_SIZE){ 9551 return; 9552 } 9553 memcpy(iso_stream->reassembly_buffer, packet, size); 9554 // fix pb_flag 9555 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9556 iso_stream->reassembly_pos = size; 9557 } 9558 } else { 9559 // iso_data_load contains continuation or last fragment of an SDU 9560 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9561 if (ts_flag != 0){ 9562 return; 9563 } 9564 // append fragment 9565 if (iso_stream == NULL){ 9566 return; 9567 } 9568 if (iso_stream->reassembly_pos == 0){ 9569 return; 9570 } 9571 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9572 // reset reassembly buffer 9573 iso_stream->reassembly_pos = 0; 9574 return; 9575 } 9576 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9577 iso_stream->reassembly_pos += iso_data_len; 9578 9579 // deliver if last fragment and SDU complete 9580 if (pb_flag == 0x03){ 9581 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9582 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9583 } 9584 iso_stream->reassembly_pos = 0; 9585 } 9586 } 9587 } 9588 9589 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9590 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9591 uint16_t pos = 0; 9592 event[pos++] = HCI_EVENT_META_GAP; 9593 event[pos++] = 4 + (2 * big->num_bis); 9594 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9595 event[pos++] = status; 9596 event[pos++] = big->big_handle; 9597 event[pos++] = big->num_bis; 9598 uint8_t i; 9599 for (i=0;i<big->num_bis;i++){ 9600 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9601 pos += 2; 9602 } 9603 hci_emit_event(event, pos, 0); 9604 } 9605 9606 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9607 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9608 uint16_t pos = 0; 9609 event[pos++] = HCI_EVENT_META_GAP; 9610 event[pos++] = 4 + (2 * cig->num_cis); 9611 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9612 event[pos++] = status; 9613 event[pos++] = cig->cig_id; 9614 event[pos++] = cig->num_cis; 9615 uint8_t i; 9616 for (i=0;i<cig->num_cis;i++){ 9617 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9618 pos += 2; 9619 } 9620 hci_emit_event(event, pos, 0); 9621 } 9622 9623 static void 9624 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status) { 9625 uint8_t event [7]; 9626 uint16_t pos = 0; 9627 event[pos++] = HCI_EVENT_META_GAP; 9628 event[pos++] = 5; 9629 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9630 event[pos++] = status; 9631 event[pos++] = cig_id; 9632 little_endian_store_16(event, pos, cis_con_handle); 9633 pos += 2; 9634 hci_emit_event(event, pos, 0); 9635 } 9636 9637 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9638 uint8_t event [4]; 9639 uint16_t pos = 0; 9640 event[pos++] = HCI_EVENT_META_GAP; 9641 event[pos++] = 2; 9642 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9643 event[pos++] = big->big_handle; 9644 hci_emit_event(event, pos, 0); 9645 } 9646 9647 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9648 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9649 uint16_t pos = 0; 9650 event[pos++] = HCI_EVENT_META_GAP; 9651 event[pos++] = 4; 9652 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9653 event[pos++] = status; 9654 event[pos++] = big_sync->big_handle; 9655 event[pos++] = big_sync->num_bis; 9656 uint8_t i; 9657 for (i=0;i<big_sync->num_bis;i++){ 9658 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9659 pos += 2; 9660 } 9661 hci_emit_event(event, pos, 0); 9662 } 9663 9664 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9665 uint8_t event [4]; 9666 uint16_t pos = 0; 9667 event[pos++] = HCI_EVENT_META_GAP; 9668 event[pos++] = 2; 9669 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9670 event[pos++] = big_handle; 9671 hci_emit_event(event, pos, 0); 9672 } 9673 9674 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9675 uint8_t event[6]; 9676 uint16_t pos = 0; 9677 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9678 event[pos++] = sizeof(event) - 2; 9679 event[pos++] = big->big_handle; 9680 event[pos++] = bis_index; 9681 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9682 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9683 } 9684 9685 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9686 uint8_t event[4]; 9687 uint16_t pos = 0; 9688 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9689 event[pos++] = sizeof(event) - 2; 9690 little_endian_store_16(event, pos, cis_con_handle); 9691 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9692 } 9693 9694 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9695 btstack_linked_list_iterator_t it; 9696 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9697 while (btstack_linked_list_iterator_has_next(&it)){ 9698 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9699 if ( big->big_handle == big_handle ) { 9700 return big; 9701 } 9702 } 9703 return NULL; 9704 } 9705 9706 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9707 btstack_linked_list_iterator_t it; 9708 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9709 while (btstack_linked_list_iterator_has_next(&it)){ 9710 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9711 if ( big_sync->big_handle == big_handle ) { 9712 return big_sync; 9713 } 9714 } 9715 return NULL; 9716 } 9717 9718 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9719 hci_stack->iso_packets_to_queue = num_packets; 9720 } 9721 9722 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9723 btstack_linked_list_iterator_t it; 9724 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9725 while (btstack_linked_list_iterator_has_next(&it)){ 9726 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9727 if ( cig->cig_id == cig_id ) { 9728 return cig; 9729 } 9730 } 9731 return NULL; 9732 } 9733 9734 static void hci_iso_notify_can_send_now(void){ 9735 9736 // BIG 9737 9738 btstack_linked_list_iterator_t it; 9739 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9740 while (btstack_linked_list_iterator_has_next(&it)){ 9741 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9742 // track number completed packet timestamps 9743 if (big->num_completed_timestamp_current_valid){ 9744 big->num_completed_timestamp_current_valid = false; 9745 if (big->num_completed_timestamp_previous_valid){ 9746 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9747 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9748 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9749 big->num_completed_timestamp_previous_ms); 9750 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9751 // to catch up, skip packet on all BIS 9752 uint8_t i; 9753 for (i=0;i<big->num_bis;i++){ 9754 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9755 if (iso_stream){ 9756 iso_stream->num_packets_to_skip++; 9757 } 9758 } 9759 } 9760 } 9761 big->num_completed_timestamp_previous_valid = true; 9762 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9763 } 9764 9765 if (big->can_send_now_requested){ 9766 // check if no outgoing iso packets pending and no can send now have to be emitted 9767 uint8_t i; 9768 bool can_send = true; 9769 uint8_t num_iso_queued_minimum = 0; 9770 for (i=0;i<big->num_bis;i++){ 9771 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9772 if (iso_stream == NULL) continue; 9773 // handle case where individual ISO packet was sent too late: 9774 // for each additionally queued packet, a new one needs to get skipped 9775 if (i==0){ 9776 num_iso_queued_minimum = iso_stream->num_packets_sent; 9777 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9778 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9779 iso_stream->num_packets_to_skip += num_packets_to_skip; 9780 iso_stream->num_packets_sent -= num_packets_to_skip; 9781 } 9782 // check if we can send now 9783 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9784 can_send = false; 9785 break; 9786 } 9787 } 9788 if (can_send){ 9789 // propagate can send now to individual streams 9790 big->can_send_now_requested = false; 9791 for (i=0;i<big->num_bis;i++){ 9792 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9793 iso_stream->emit_ready_to_send = true; 9794 } 9795 } 9796 } 9797 } 9798 9799 if (hci_stack->hci_packet_buffer_reserved) return; 9800 9801 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9802 while (btstack_linked_list_iterator_has_next(&it)){ 9803 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9804 // report bis ready 9805 uint8_t i; 9806 for (i=0;i<big->num_bis;i++){ 9807 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9808 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9809 iso_stream->emit_ready_to_send = false; 9810 hci_emit_bis_can_send_now(big, i); 9811 break; 9812 } 9813 } 9814 } 9815 9816 // CIS 9817 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9818 while (btstack_linked_list_iterator_has_next(&it)) { 9819 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9820 if ((iso_stream->can_send_now_requested) && 9821 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9822 iso_stream->can_send_now_requested = false; 9823 hci_emit_cis_can_send_now(iso_stream->con_handle); 9824 } 9825 } 9826 } 9827 9828 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9829 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9830 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9831 } 9832 if (big_params->num_bis == 0){ 9833 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9834 } 9835 if (big_params->num_bis > MAX_NR_BIS){ 9836 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9837 } 9838 9839 // reserve ISO Streams 9840 uint8_t i; 9841 uint8_t status = ERROR_CODE_SUCCESS; 9842 for (i=0;i<big_params->num_bis;i++){ 9843 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_CON_HANDLE_INVALID, big_params->big_handle, 9844 HCI_ISO_STREAM_STATE_REQUESTED); 9845 if (status != ERROR_CODE_SUCCESS) { 9846 break; 9847 } 9848 } 9849 9850 // free structs on error 9851 if (status != ERROR_CODE_SUCCESS){ 9852 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9853 return status; 9854 } 9855 9856 le_audio_big_t * big = storage; 9857 big->big_handle = big_params->big_handle; 9858 big->params = big_params; 9859 big->state = LE_AUDIO_BIG_STATE_CREATE; 9860 big->num_bis = big_params->num_bis; 9861 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9862 9863 hci_run(); 9864 9865 return ERROR_CODE_SUCCESS; 9866 } 9867 9868 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9869 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9870 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9871 } 9872 if (big_sync_params->num_bis == 0){ 9873 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9874 } 9875 if (big_sync_params->num_bis > MAX_NR_BIS){ 9876 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9877 } 9878 9879 le_audio_big_sync_t * big_sync = storage; 9880 big_sync->big_handle = big_sync_params->big_handle; 9881 big_sync->params = big_sync_params; 9882 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9883 big_sync->num_bis = big_sync_params->num_bis; 9884 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9885 9886 hci_run(); 9887 9888 return ERROR_CODE_SUCCESS; 9889 } 9890 9891 uint8_t gap_big_terminate(uint8_t big_handle){ 9892 le_audio_big_t * big = hci_big_for_handle(big_handle); 9893 if (big == NULL){ 9894 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9895 } 9896 switch (big->state){ 9897 case LE_AUDIO_BIG_STATE_CREATE: 9898 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9899 hci_emit_big_terminated(big); 9900 break; 9901 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9902 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9903 break; 9904 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9905 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9906 case LE_AUDIO_BIG_STATE_ACTIVE: 9907 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9908 hci_run(); 9909 break; 9910 default: 9911 return ERROR_CODE_COMMAND_DISALLOWED; 9912 } 9913 return ERROR_CODE_SUCCESS; 9914 } 9915 9916 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9917 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9918 if (big_sync == NULL){ 9919 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9920 } 9921 switch (big_sync->state){ 9922 case LE_AUDIO_BIG_STATE_CREATE: 9923 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9924 hci_emit_big_sync_stopped(big_handle); 9925 break; 9926 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9927 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9928 break; 9929 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9930 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9931 case LE_AUDIO_BIG_STATE_ACTIVE: 9932 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9933 hci_run(); 9934 break; 9935 default: 9936 return ERROR_CODE_COMMAND_DISALLOWED; 9937 } 9938 return ERROR_CODE_SUCCESS; 9939 } 9940 9941 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9942 le_audio_big_t * big = hci_big_for_handle(big_handle); 9943 if (big == NULL){ 9944 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9945 } 9946 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9947 return ERROR_CODE_COMMAND_DISALLOWED; 9948 } 9949 big->can_send_now_requested = true; 9950 hci_iso_notify_can_send_now(); 9951 return ERROR_CODE_SUCCESS; 9952 } 9953 9954 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9955 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9956 if (iso_stream == NULL){ 9957 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9958 } 9959 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9960 return ERROR_CODE_COMMAND_DISALLOWED; 9961 } 9962 iso_stream->can_send_now_requested = true; 9963 hci_iso_notify_can_send_now(); 9964 return ERROR_CODE_SUCCESS; 9965 } 9966 9967 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9968 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9969 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9970 } 9971 if (cig_params->num_cis == 0){ 9972 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9973 } 9974 if (cig_params->num_cis > MAX_NR_BIS){ 9975 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9976 } 9977 9978 // reserve ISO Streams 9979 uint8_t i; 9980 uint8_t status = ERROR_CODE_SUCCESS; 9981 for (i=0;i<cig_params->num_cis;i++){ 9982 status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_CON_HANDLE_INVALID, cig_params->cig_id, 9983 HCI_ISO_STREAM_STATE_REQUESTED); 9984 if (status != ERROR_CODE_SUCCESS) { 9985 break; 9986 } 9987 } 9988 9989 // free structs on error 9990 if (status != ERROR_CODE_SUCCESS){ 9991 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 9992 return status; 9993 } 9994 9995 le_audio_cig_t * cig = storage; 9996 cig->cig_id = cig_params->cig_id; 9997 cig->num_cis = cig_params->num_cis; 9998 cig->params = cig_params; 9999 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10000 for (i=0;i<cig->num_cis;i++){ 10001 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10002 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10003 cig->cis_setup_active[i] = false; 10004 cig->cis_established[i] = false; 10005 } 10006 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10007 10008 hci_run(); 10009 10010 return ERROR_CODE_SUCCESS; 10011 } 10012 10013 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10014 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10015 if (cig == NULL){ 10016 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10017 } 10018 10019 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10020 return ERROR_CODE_COMMAND_DISALLOWED; 10021 } 10022 10023 // store ACL Connection Handles 10024 uint8_t i; 10025 for (i=0;i<cig->num_cis;i++){ 10026 // check that all con handles exit 10027 hci_con_handle_t cis_handle = cis_con_handles[i]; 10028 uint8_t j; 10029 bool found = false; 10030 for (j=0;j<cig->num_cis;j++){ 10031 if (cig->cis_con_handles[j] == cis_handle){ 10032 cig->acl_con_handles[j] = acl_con_handles[j]; 10033 found = true; 10034 break; 10035 } 10036 } 10037 if (!found){ 10038 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10039 } 10040 } 10041 10042 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10043 hci_run(); 10044 10045 return ERROR_CODE_SUCCESS; 10046 } 10047 10048 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_con_handle, hci_iso_stream_state_t state){ 10049 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10050 if (iso_stream != NULL){ 10051 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10052 } 10053 10054 uint8_t status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, cis_con_handle, 10055 HCI_ISO_GROUP_ID_INVALID, state); 10056 if (status == ERROR_CODE_SUCCESS){ 10057 return status; 10058 } 10059 10060 hci_run(); 10061 return ERROR_CODE_SUCCESS; 10062 } 10063 10064 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10065 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10066 } 10067 10068 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10069 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10070 } 10071 10072 10073 #endif 10074 #endif /* ENABLE_BLE */ 10075 10076 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10077 void hci_setup_test_connections_fuzz(void){ 10078 hci_connection_t * conn; 10079 10080 // default address: 66:55:44:33:00:01 10081 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10082 10083 // setup Controller info 10084 hci_stack->num_cmd_packets = 255; 10085 hci_stack->acl_packets_total_num = 255; 10086 10087 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10088 addr[5] = 0x01; 10089 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10090 conn->con_handle = addr[5]; 10091 conn->role = HCI_ROLE_SLAVE; 10092 conn->state = RECEIVED_CONNECTION_REQUEST; 10093 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10094 10095 // setup incoming Classic SCO connection with con handle 0x0002 10096 addr[5] = 0x02; 10097 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10098 conn->con_handle = addr[5]; 10099 conn->role = HCI_ROLE_SLAVE; 10100 conn->state = RECEIVED_CONNECTION_REQUEST; 10101 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10102 10103 // setup ready Classic ACL connection with con handle 0x0003 10104 addr[5] = 0x03; 10105 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10106 conn->con_handle = addr[5]; 10107 conn->role = HCI_ROLE_SLAVE; 10108 conn->state = OPEN; 10109 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10110 10111 // setup ready Classic SCO connection with con handle 0x0004 10112 addr[5] = 0x04; 10113 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10114 conn->con_handle = addr[5]; 10115 conn->role = HCI_ROLE_SLAVE; 10116 conn->state = OPEN; 10117 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10118 10119 // setup ready LE ACL connection with con handle 0x005 and public address 10120 addr[5] = 0x05; 10121 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 10122 conn->con_handle = addr[5]; 10123 conn->role = HCI_ROLE_SLAVE; 10124 conn->state = OPEN; 10125 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10126 conn->sm_connection.sm_connection_encrypted = 1; 10127 } 10128 10129 void hci_free_connections_fuzz(void){ 10130 btstack_linked_list_iterator_t it; 10131 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10132 while (btstack_linked_list_iterator_has_next(&it)){ 10133 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10134 btstack_linked_list_iterator_remove(&it); 10135 btstack_memory_hci_connection_free(con); 10136 } 10137 } 10138 void hci_simulate_working_fuzz(void){ 10139 hci_stack->le_scanning_param_update = false; 10140 hci_init_done(); 10141 hci_stack->num_cmd_packets = 255; 10142 } 10143 #endif 10144