1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static int hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 247 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 248 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 249 static void hci_iso_notify_can_send_now(void); 250 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 251 static void hci_emit_big_terminated(const le_audio_big_t * big); 252 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 253 static void hci_emit_big_sync_stopped(uint8_t big_handle); 254 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 255 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 258 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 259 #endif /* ENABLE_BLE */ 260 261 // the STACK is here 262 #ifndef HAVE_MALLOC 263 static hci_stack_t hci_stack_static; 264 #endif 265 static hci_stack_t * hci_stack = NULL; 266 267 #ifdef ENABLE_CLASSIC 268 // default name 269 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 270 271 // test helper 272 static uint8_t disable_l2cap_timeouts = 0; 273 #endif 274 275 // reset connection state on create and on reconnect 276 // don't overwrite addr, con handle, role 277 static void hci_connection_init(hci_connection_t * conn){ 278 conn->authentication_flags = AUTH_FLAG_NONE; 279 conn->bonding_flags = 0; 280 conn->requested_security_level = LEVEL_0; 281 #ifdef ENABLE_CLASSIC 282 conn->request_role = HCI_ROLE_INVALID; 283 conn->sniff_subrating_max_latency = 0xffff; 284 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 285 conn->link_key_type = INVALID_LINK_KEY; 286 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 287 btstack_run_loop_set_timer_context(&conn->timeout, conn); 288 hci_connection_timestamp(conn); 289 #endif 290 conn->acl_recombination_length = 0; 291 conn->acl_recombination_pos = 0; 292 conn->num_packets_sent = 0; 293 294 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 295 #ifdef ENABLE_BLE 296 conn->le_phy_update_all_phys = 0xff; 297 #endif 298 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 299 conn->le_max_tx_octets = 27; 300 #endif 301 #ifdef ENABLE_CLASSIC_PAIRING_OOB 302 conn->classic_oob_c_192 = NULL; 303 conn->classic_oob_r_192 = NULL; 304 conn->classic_oob_c_256 = NULL; 305 conn->classic_oob_r_256 = NULL; 306 #endif 307 } 308 309 /** 310 * create connection for given address 311 * 312 * @return connection OR NULL, if no memory left 313 */ 314 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 315 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 316 317 hci_connection_t * conn = btstack_memory_hci_connection_get(); 318 if (!conn) return NULL; 319 hci_connection_init(conn); 320 321 bd_addr_copy(conn->address, addr); 322 conn->address_type = addr_type; 323 conn->con_handle = HCI_CON_HANDLE_INVALID; 324 conn->role = HCI_ROLE_INVALID; 325 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 326 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 327 #endif 328 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 329 330 return conn; 331 } 332 333 334 /** 335 * get le connection parameter range 336 * 337 * @return le connection parameter range struct 338 */ 339 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 340 *range = hci_stack->le_connection_parameter_range; 341 } 342 343 /** 344 * set le connection parameter range 345 * 346 */ 347 348 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 349 hci_stack->le_connection_parameter_range = *range; 350 } 351 352 /** 353 * @brief Test if connection parameters are inside in existing rage 354 * @param conn_interval_min (unit: 1.25ms) 355 * @param conn_interval_max (unit: 1.25ms) 356 * @param conn_latency 357 * @param supervision_timeout (unit: 10ms) 358 * @return 1 if included 359 */ 360 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){ 361 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 362 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 363 364 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 365 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 366 367 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 368 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 369 370 return 1; 371 } 372 373 /** 374 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 375 * @note: default: 1 376 * @param max_peripheral_connections 377 */ 378 #ifdef ENABLE_LE_PERIPHERAL 379 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 380 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 381 } 382 #endif 383 384 /** 385 * get hci connections iterator 386 * 387 * @return hci connections iterator 388 */ 389 390 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 391 btstack_linked_list_iterator_init(it, &hci_stack->connections); 392 } 393 394 /** 395 * get connection for a given handle 396 * 397 * @return connection OR NULL, if not found 398 */ 399 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 400 btstack_linked_list_iterator_t it; 401 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 402 while (btstack_linked_list_iterator_has_next(&it)){ 403 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 404 if ( item->con_handle == con_handle ) { 405 return item; 406 } 407 } 408 return NULL; 409 } 410 411 /** 412 * get connection for given address 413 * 414 * @return connection OR NULL, if not found 415 */ 416 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 417 btstack_linked_list_iterator_t it; 418 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 419 while (btstack_linked_list_iterator_has_next(&it)){ 420 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 421 if (connection->address_type != addr_type) continue; 422 if (memcmp(addr, connection->address, 6) != 0) continue; 423 return connection; 424 } 425 return NULL; 426 } 427 428 #ifdef ENABLE_CLASSIC 429 430 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 431 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 432 } 433 434 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 435 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 436 } 437 438 #ifdef ENABLE_SCO_OVER_HCI 439 static int hci_number_sco_connections(void){ 440 int connections = 0; 441 btstack_linked_list_iterator_t it; 442 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 443 while (btstack_linked_list_iterator_has_next(&it)){ 444 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 445 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 446 connections++; 447 } 448 return connections; 449 } 450 #endif 451 452 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 453 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 454 #ifdef HAVE_EMBEDDED_TICK 455 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 456 // connections might be timed out 457 hci_emit_l2cap_check_timeout(connection); 458 } 459 #else 460 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 461 // connections might be timed out 462 hci_emit_l2cap_check_timeout(connection); 463 } 464 #endif 465 } 466 467 static void hci_connection_timestamp(hci_connection_t *connection){ 468 #ifdef HAVE_EMBEDDED_TICK 469 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 470 #else 471 connection->timestamp = btstack_run_loop_get_time_ms(); 472 #endif 473 } 474 475 /** 476 * add authentication flags and reset timer 477 * @note: assumes classic connection 478 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 479 */ 480 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 481 bd_addr_t addr; 482 reverse_bd_addr(bd_addr, addr); 483 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 484 if (conn) { 485 connectionSetAuthenticationFlags(conn, flags); 486 hci_connection_timestamp(conn); 487 } 488 } 489 490 static bool hci_pairing_active(hci_connection_t * hci_connection){ 491 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 492 } 493 494 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 495 if (hci_pairing_active(hci_connection)) return; 496 if (ssp){ 497 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 498 } else { 499 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 500 } 501 // if we are initiator, we have sent an HCI Authenticate Request 502 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 503 504 // if we are responder, use minimal service security level as required level 505 if (!initiator){ 506 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); 507 } 508 509 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 510 511 uint8_t event[12]; 512 event[0] = GAP_EVENT_PAIRING_STARTED; 513 event[1] = 10; 514 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 515 reverse_bd_addr(hci_connection->address, &event[4]); 516 event[10] = (uint8_t) ssp; 517 event[11] = (uint8_t) initiator; 518 hci_emit_event(event, sizeof(event), 1); 519 } 520 521 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 522 hci_connection->requested_security_level = LEVEL_0; 523 if (!hci_pairing_active(hci_connection)) return; 524 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 525 #ifdef ENABLE_CLASSIC_PAIRING_OOB 526 hci_connection->classic_oob_c_192 = NULL; 527 hci_connection->classic_oob_r_192 = NULL; 528 hci_connection->classic_oob_c_256 = NULL; 529 hci_connection->classic_oob_r_256 = NULL; 530 #endif 531 log_info("pairing complete, status %02x", status); 532 533 uint8_t event[11]; 534 event[0] = GAP_EVENT_PAIRING_COMPLETE; 535 event[1] = 9; 536 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 537 reverse_bd_addr(hci_connection->address, &event[4]); 538 event[10] = status; 539 hci_emit_event(event, sizeof(event), 1); 540 541 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 542 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 543 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 544 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 545 hci_connection->bonding_status = status; 546 } 547 } 548 549 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 550 hci_connection_t * conn = hci_connection_for_handle(handle); 551 if (!conn) return false; 552 return hci_pairing_active(conn); 553 } 554 555 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 556 if (!hci_stack->link_key_db) return; 557 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 558 hci_stack->link_key_db->delete_link_key(addr); 559 } 560 561 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 562 if (!hci_stack->link_key_db) return; 563 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 564 hci_stack->link_key_db->put_link_key(addr, link_key, type); 565 } 566 567 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 568 if (!hci_stack->link_key_db) return false; 569 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 570 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 571 return result; 572 } 573 574 void gap_delete_all_link_keys(void){ 575 bd_addr_t addr; 576 link_key_t link_key; 577 link_key_type_t type; 578 btstack_link_key_iterator_t it; 579 int ok = gap_link_key_iterator_init(&it); 580 if (!ok) { 581 log_error("could not initialize iterator"); 582 return; 583 } 584 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 585 gap_drop_link_key_for_bd_addr(addr); 586 } 587 gap_link_key_iterator_done(&it); 588 } 589 590 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 591 if (!hci_stack->link_key_db) return 0; 592 if (!hci_stack->link_key_db->iterator_init) return 0; 593 return hci_stack->link_key_db->iterator_init(it); 594 } 595 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){ 596 if (!hci_stack->link_key_db) return 0; 597 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 598 } 599 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 600 if (!hci_stack->link_key_db) return; 601 hci_stack->link_key_db->iterator_done(it); 602 } 603 #endif 604 605 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 606 switch (address_type){ 607 case BD_ADDR_TYPE_LE_PUBLIC: 608 case BD_ADDR_TYPE_LE_RANDOM: 609 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 610 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 611 return true; 612 default: 613 return false; 614 } 615 } 616 617 static int hci_is_le_connection(hci_connection_t * connection){ 618 return hci_is_le_connection_type(connection->address_type); 619 } 620 621 /** 622 * count connections 623 */ 624 static int nr_hci_connections(void){ 625 int count = 0; 626 btstack_linked_item_t *it; 627 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 628 count++; 629 } 630 return count; 631 } 632 633 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 634 635 unsigned int num_packets_sent_classic = 0; 636 unsigned int num_packets_sent_le = 0; 637 638 btstack_linked_item_t *it; 639 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 640 hci_connection_t * connection = (hci_connection_t *) it; 641 if (hci_is_le_connection(connection)){ 642 num_packets_sent_le += connection->num_packets_sent; 643 } 644 if (connection->address_type == BD_ADDR_TYPE_ACL){ 645 num_packets_sent_classic += connection->num_packets_sent; 646 } 647 } 648 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 649 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 650 int free_slots_le = 0; 651 652 if (free_slots_classic < 0){ 653 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); 654 return 0; 655 } 656 657 if (hci_stack->le_acl_packets_total_num){ 658 // if we have LE slots, they are used 659 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 660 if (free_slots_le < 0){ 661 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); 662 return 0; 663 } 664 } else { 665 // otherwise, classic slots are used for LE, too 666 free_slots_classic -= num_packets_sent_le; 667 if (free_slots_classic < 0){ 668 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); 669 return 0; 670 } 671 } 672 673 switch (address_type){ 674 case BD_ADDR_TYPE_UNKNOWN: 675 log_error("hci_number_free_acl_slots: unknown address type"); 676 return 0; 677 678 case BD_ADDR_TYPE_ACL: 679 return (uint16_t) free_slots_classic; 680 681 default: 682 if (hci_stack->le_acl_packets_total_num > 0){ 683 return (uint16_t) free_slots_le; 684 } 685 return (uint16_t) free_slots_classic; 686 } 687 } 688 689 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 690 // get connection type 691 hci_connection_t * connection = hci_connection_for_handle(con_handle); 692 if (!connection){ 693 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 694 return 0; 695 } 696 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 697 } 698 699 #ifdef ENABLE_CLASSIC 700 static int hci_number_free_sco_slots(void){ 701 unsigned int num_sco_packets_sent = 0; 702 btstack_linked_item_t *it; 703 if (hci_stack->synchronous_flow_control_enabled){ 704 // explicit flow control 705 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 706 hci_connection_t * connection = (hci_connection_t *) it; 707 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 708 num_sco_packets_sent += connection->num_packets_sent; 709 } 710 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 711 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 712 return 0; 713 } 714 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 715 } else { 716 // implicit flow control -- TODO 717 int num_ready = 0; 718 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 719 hci_connection_t * connection = (hci_connection_t *) it; 720 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 721 if (connection->sco_tx_ready == 0) continue; 722 num_ready++; 723 } 724 return num_ready; 725 } 726 } 727 #endif 728 729 // only used to send HCI Host Number Completed Packets 730 static int hci_can_send_comand_packet_transport(void){ 731 if (hci_stack->hci_packet_buffer_reserved) return 0; 732 733 // check for async hci transport implementations 734 if (hci_stack->hci_transport->can_send_packet_now){ 735 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 736 return 0; 737 } 738 } 739 return 1; 740 } 741 742 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 743 bool hci_can_send_command_packet_now(void){ 744 if (hci_can_send_comand_packet_transport() == 0) return false; 745 return hci_stack->num_cmd_packets > 0u; 746 } 747 748 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 749 // check for async hci transport implementations 750 if (!hci_stack->hci_transport->can_send_packet_now) return true; 751 return hci_stack->hci_transport->can_send_packet_now(packet_type); 752 } 753 754 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 755 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 756 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 757 } 758 759 bool hci_can_send_acl_le_packet_now(void){ 760 if (hci_stack->hci_packet_buffer_reserved) return false; 761 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 762 } 763 764 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 765 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 766 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 767 } 768 769 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 770 if (hci_stack->hci_packet_buffer_reserved) return false; 771 return hci_can_send_prepared_acl_packet_now(con_handle); 772 } 773 774 #ifdef ENABLE_CLASSIC 775 bool hci_can_send_acl_classic_packet_now(void){ 776 if (hci_stack->hci_packet_buffer_reserved) return false; 777 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 778 } 779 780 bool hci_can_send_prepared_sco_packet_now(void){ 781 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 782 if (hci_have_usb_transport()){ 783 return hci_stack->sco_can_send_now; 784 } else { 785 return hci_number_free_sco_slots() > 0; 786 } 787 } 788 789 bool hci_can_send_sco_packet_now(void){ 790 if (hci_stack->hci_packet_buffer_reserved) return false; 791 return hci_can_send_prepared_sco_packet_now(); 792 } 793 794 void hci_request_sco_can_send_now_event(void){ 795 hci_stack->sco_waiting_for_can_send_now = 1; 796 hci_notify_if_sco_can_send_now(); 797 } 798 #endif 799 800 // used for internal checks in l2cap.c 801 bool hci_is_packet_buffer_reserved(void){ 802 return hci_stack->hci_packet_buffer_reserved; 803 } 804 805 // reserves outgoing packet buffer. 806 // @return 1 if successful 807 bool hci_reserve_packet_buffer(void){ 808 if (hci_stack->hci_packet_buffer_reserved) { 809 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 810 return false; 811 } 812 hci_stack->hci_packet_buffer_reserved = true; 813 return true; 814 } 815 816 void hci_release_packet_buffer(void){ 817 hci_stack->hci_packet_buffer_reserved = false; 818 } 819 820 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 821 static int hci_transport_synchronous(void){ 822 return hci_stack->hci_transport->can_send_packet_now == NULL; 823 } 824 825 // used for debugging 826 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 827 static void hci_controller_dump_packets(void){ 828 // format: "{handle:04x}:{count:02d} " 829 char summaries[3][7 * 8 + 1]; 830 uint16_t totals[3]; 831 uint8_t index; 832 for (index = 0 ; index < 3 ; index++){ 833 summaries[index][0] = 0; 834 totals[index] = 0; 835 } 836 btstack_linked_item_t *it; 837 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 838 hci_connection_t * connection = (hci_connection_t *) it; 839 switch (connection->address_type){ 840 case BD_ADDR_TYPE_ACL: 841 index = 0; 842 break; 843 case BD_ADDR_TYPE_SCO: 844 index = 2; 845 break; 846 default: 847 index = 1; 848 break; 849 } 850 totals[index] += connection->num_packets_sent; 851 char item_text[10]; 852 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 853 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 854 } 855 for (index = 0 ; index < 3 ; index++){ 856 if (summaries[index][0] == 0){ 857 summaries[index][0] = '-'; 858 summaries[index][1] = 0; 859 } 860 } 861 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]); 862 } 863 #endif 864 865 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 866 867 // 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); 868 869 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 870 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 871 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 872 max_acl_data_packet_length = hci_stack->le_data_packets_length; 873 } 874 875 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 876 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 877 max_acl_data_packet_length = connection->le_max_tx_octets; 878 } 879 #endif 880 881 log_debug("hci_send_acl_packet_fragments entered"); 882 883 uint8_t status = ERROR_CODE_SUCCESS; 884 // multiple packets could be send on a synchronous HCI transport 885 while (true){ 886 887 log_debug("hci_send_acl_packet_fragments loop entered"); 888 889 // get current data 890 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 891 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 892 bool more_fragments = false; 893 894 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 895 if (current_acl_data_packet_length > max_acl_data_packet_length){ 896 more_fragments = true; 897 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 898 } 899 900 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 901 if (acl_header_pos > 0u){ 902 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 903 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 904 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 905 } 906 907 // update header len 908 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 909 910 // count packet 911 connection->num_packets_sent++; 912 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 913 914 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 915 if (more_fragments){ 916 // update start of next fragment to send 917 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 918 } else { 919 // done 920 hci_stack->acl_fragmentation_pos = 0; 921 hci_stack->acl_fragmentation_total_size = 0; 922 } 923 924 // send packet 925 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 926 const int size = current_acl_data_packet_length + 4; 927 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 928 hci_stack->acl_fragmentation_tx_active = 1; 929 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 930 if (err != 0){ 931 // no error from HCI Transport expected 932 status = ERROR_CODE_HARDWARE_FAILURE; 933 } 934 935 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 936 hci_controller_dump_packets(); 937 #endif 938 939 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 940 941 // done yet? 942 if (!more_fragments) break; 943 944 // can send more? 945 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 946 } 947 948 log_debug("hci_send_acl_packet_fragments loop over"); 949 950 // release buffer now for synchronous transport 951 if (hci_transport_synchronous()){ 952 hci_stack->acl_fragmentation_tx_active = 0; 953 hci_release_packet_buffer(); 954 hci_emit_transport_packet_sent(); 955 } 956 957 return status; 958 } 959 960 // pre: caller has reserved the packet buffer 961 uint8_t hci_send_acl_packet_buffer(int size){ 962 btstack_assert(hci_stack->hci_packet_buffer_reserved); 963 964 uint8_t * packet = hci_stack->hci_packet_buffer; 965 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 966 967 // check for free places on Bluetooth module 968 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 969 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 970 hci_release_packet_buffer(); 971 hci_emit_transport_packet_sent(); 972 return BTSTACK_ACL_BUFFERS_FULL; 973 } 974 975 hci_connection_t *connection = hci_connection_for_handle( con_handle); 976 if (!connection) { 977 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 978 hci_release_packet_buffer(); 979 hci_emit_transport_packet_sent(); 980 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 981 } 982 983 #ifdef ENABLE_CLASSIC 984 hci_connection_timestamp(connection); 985 #endif 986 987 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 988 989 // setup data 990 hci_stack->acl_fragmentation_total_size = size; 991 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 992 993 return hci_send_acl_packet_fragments(connection); 994 } 995 996 #ifdef ENABLE_CLASSIC 997 // pre: caller has reserved the packet buffer 998 uint8_t hci_send_sco_packet_buffer(int size){ 999 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1000 1001 uint8_t * packet = hci_stack->hci_packet_buffer; 1002 1003 // skip checks in loopback mode 1004 if (!hci_stack->loopback_mode){ 1005 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1006 1007 // check for free places on Bluetooth module 1008 if (!hci_can_send_prepared_sco_packet_now()) { 1009 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1010 hci_release_packet_buffer(); 1011 hci_emit_transport_packet_sent(); 1012 return BTSTACK_ACL_BUFFERS_FULL; 1013 } 1014 1015 // track send packet in connection struct 1016 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1017 if (!connection) { 1018 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1019 hci_release_packet_buffer(); 1020 hci_emit_transport_packet_sent(); 1021 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1022 } 1023 1024 if (hci_have_usb_transport()){ 1025 // token used 1026 hci_stack->sco_can_send_now = false; 1027 } else { 1028 if (hci_stack->synchronous_flow_control_enabled){ 1029 connection->num_packets_sent++; 1030 } else { 1031 connection->sco_tx_ready--; 1032 } 1033 } 1034 } 1035 1036 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1037 1038 #ifdef HAVE_SCO_TRANSPORT 1039 hci_stack->sco_transport->send_packet(packet, size); 1040 hci_release_packet_buffer(); 1041 hci_emit_transport_packet_sent(); 1042 1043 return 0; 1044 #else 1045 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1046 if (hci_transport_synchronous()){ 1047 hci_release_packet_buffer(); 1048 hci_emit_transport_packet_sent(); 1049 } 1050 1051 if (err != 0){ 1052 return ERROR_CODE_HARDWARE_FAILURE; 1053 } 1054 return ERROR_CODE_SUCCESS; 1055 #endif 1056 } 1057 #endif 1058 1059 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1060 static uint8_t hci_send_iso_packet_fragments(void){ 1061 1062 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1063 uint8_t status = ERROR_CODE_SUCCESS; 1064 // multiple packets could be send on a synchronous HCI transport 1065 while (true){ 1066 1067 // get current data 1068 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1069 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1070 bool more_fragments = false; 1071 1072 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1073 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1074 more_fragments = true; 1075 current_iso_data_packet_length = max_iso_data_packet_length; 1076 } 1077 1078 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1079 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1080 uint8_t pb_flags; 1081 if (iso_header_pos == 0u){ 1082 // first fragment, keep TS field 1083 pb_flags = more_fragments ? 0x00 : 0x02; 1084 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1085 } else { 1086 // later fragment, drop TS field 1087 pb_flags = more_fragments ? 0x01 : 0x03; 1088 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1089 } 1090 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1091 1092 // update header len 1093 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1094 1095 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1096 if (more_fragments){ 1097 // update start of next fragment to send 1098 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1099 } else { 1100 // done 1101 hci_stack->iso_fragmentation_pos = 0; 1102 hci_stack->iso_fragmentation_total_size = 0; 1103 } 1104 1105 // send packet 1106 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1107 const int size = current_iso_data_packet_length + 4; 1108 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1109 hci_stack->iso_fragmentation_tx_active = true; 1110 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1111 if (err != 0){ 1112 // no error from HCI Transport expected 1113 status = ERROR_CODE_HARDWARE_FAILURE; 1114 } 1115 1116 // done yet? 1117 if (!more_fragments) break; 1118 1119 // can send more? 1120 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1121 } 1122 1123 // release buffer now for synchronous transport 1124 if (hci_transport_synchronous()){ 1125 hci_stack->iso_fragmentation_tx_active = false; 1126 hci_release_packet_buffer(); 1127 hci_emit_transport_packet_sent(); 1128 } 1129 1130 return status; 1131 } 1132 1133 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1134 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1135 1136 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1137 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1138 if (iso_stream == NULL){ 1139 hci_release_packet_buffer(); 1140 hci_iso_notify_can_send_now(); 1141 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1142 } 1143 1144 // TODO: check for space on controller 1145 1146 // skip iso packets if needed 1147 if (iso_stream->num_packets_to_skip > 0){ 1148 iso_stream->num_packets_to_skip--; 1149 // pretend it was processed and trigger next one 1150 hci_release_packet_buffer(); 1151 hci_iso_notify_can_send_now(); 1152 return ERROR_CODE_SUCCESS; 1153 } 1154 1155 // track outgoing packet sent 1156 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1157 iso_stream->num_packets_sent++; 1158 1159 // setup data 1160 hci_stack->iso_fragmentation_total_size = size; 1161 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1162 1163 return hci_send_iso_packet_fragments(); 1164 } 1165 #endif 1166 1167 static void acl_handler(uint8_t *packet, uint16_t size){ 1168 1169 // get info 1170 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1171 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1172 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1173 uint16_t acl_length = READ_ACL_LENGTH(packet); 1174 1175 // ignore non-registered handle 1176 if (!conn){ 1177 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1178 return; 1179 } 1180 1181 // assert packet is complete 1182 if ((acl_length + 4u) != size){ 1183 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1184 return; 1185 } 1186 1187 #ifdef ENABLE_CLASSIC 1188 // update idle timestamp 1189 hci_connection_timestamp(conn); 1190 #endif 1191 1192 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1193 hci_stack->host_completed_packets = 1; 1194 conn->num_packets_completed++; 1195 #endif 1196 1197 // handle different packet types 1198 switch (acl_flags & 0x03u) { 1199 1200 case 0x01: // continuation fragment 1201 1202 // sanity checks 1203 if (conn->acl_recombination_pos == 0u) { 1204 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1205 return; 1206 } 1207 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1208 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1209 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1210 conn->acl_recombination_pos = 0; 1211 return; 1212 } 1213 1214 // append fragment payload (header already stored) 1215 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1216 &packet[4], acl_length); 1217 conn->acl_recombination_pos += acl_length; 1218 1219 // forward complete L2CAP packet if complete. 1220 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1221 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1222 // reset recombination buffer 1223 conn->acl_recombination_length = 0; 1224 conn->acl_recombination_pos = 0; 1225 } 1226 break; 1227 1228 case 0x02: { // first fragment 1229 1230 // sanity check 1231 if (conn->acl_recombination_pos) { 1232 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1233 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1234 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1235 } 1236 conn->acl_recombination_pos = 0; 1237 } 1238 1239 // peek into L2CAP packet! 1240 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1241 1242 // compare fragment size to L2CAP packet size 1243 if (acl_length >= (l2cap_length + 4u)){ 1244 // forward fragment as L2CAP packet 1245 hci_emit_acl_packet(packet, acl_length + 4u); 1246 } else { 1247 1248 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1249 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1250 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1251 return; 1252 } 1253 1254 // store first fragment and tweak acl length for complete package 1255 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1256 packet, acl_length + 4u); 1257 conn->acl_recombination_pos = acl_length + 4u; 1258 conn->acl_recombination_length = l2cap_length; 1259 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1260 } 1261 break; 1262 1263 } 1264 default: 1265 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1266 return; 1267 } 1268 1269 // execute main loop 1270 hci_run(); 1271 } 1272 1273 static void hci_connection_stop_timer(hci_connection_t * conn){ 1274 btstack_run_loop_remove_timer(&conn->timeout); 1275 #ifdef ENABLE_CLASSIC 1276 btstack_run_loop_remove_timer(&conn->timeout_sco); 1277 #endif 1278 } 1279 1280 static void hci_shutdown_connection(hci_connection_t *conn){ 1281 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1282 1283 #ifdef ENABLE_CLASSIC 1284 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1285 bd_addr_type_t addr_type = conn->address_type; 1286 #endif 1287 #ifdef HAVE_SCO_TRANSPORT 1288 hci_con_handle_t con_handle = conn->con_handle; 1289 #endif 1290 #endif 1291 1292 hci_connection_stop_timer(conn); 1293 1294 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1295 btstack_memory_hci_connection_free( conn ); 1296 1297 // now it's gone 1298 hci_emit_nr_connections_changed(); 1299 1300 #ifdef ENABLE_CLASSIC 1301 #ifdef ENABLE_SCO_OVER_HCI 1302 // update SCO 1303 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1304 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1305 } 1306 #endif 1307 #ifdef HAVE_SCO_TRANSPORT 1308 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1309 hci_stack->sco_transport->close(con_handle); 1310 } 1311 #endif 1312 #endif 1313 } 1314 1315 #ifdef ENABLE_CLASSIC 1316 1317 static const uint16_t packet_type_sizes[] = { 1318 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1319 HCI_ACL_DH1_SIZE, 0, 0, 0, 1320 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1321 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1322 }; 1323 static const uint8_t packet_type_feature_requirement_bit[] = { 1324 0, // 3 slot packets 1325 1, // 5 slot packets 1326 25, // EDR 2 mpbs 1327 26, // EDR 3 mbps 1328 39, // 3 slot EDR packts 1329 40, // 5 slot EDR packet 1330 }; 1331 static const uint16_t packet_type_feature_packet_mask[] = { 1332 0x0f00, // 3 slot packets 1333 0xf000, // 5 slot packets 1334 0x1102, // EDR 2 mpbs 1335 0x2204, // EDR 3 mbps 1336 0x0300, // 3 slot EDR packts 1337 0x3000, // 5 slot EDR packet 1338 }; 1339 1340 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1341 // enable packet types based on size 1342 uint16_t packet_types = 0; 1343 unsigned int i; 1344 for (i=0;i<16;i++){ 1345 if (packet_type_sizes[i] == 0) continue; 1346 if (packet_type_sizes[i] <= buffer_size){ 1347 packet_types |= 1 << i; 1348 } 1349 } 1350 // disable packet types due to missing local supported features 1351 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1352 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1353 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1354 if (feature_set) continue; 1355 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1356 packet_types &= ~packet_type_feature_packet_mask[i]; 1357 } 1358 // flip bits for "may not be used" 1359 packet_types ^= 0x3306; 1360 return packet_types; 1361 } 1362 1363 uint16_t hci_usable_acl_packet_types(void){ 1364 return hci_stack->packet_types; 1365 } 1366 #endif 1367 1368 uint8_t* hci_get_outgoing_packet_buffer(void){ 1369 // hci packet buffer is >= acl data packet length 1370 return hci_stack->hci_packet_buffer; 1371 } 1372 1373 uint16_t hci_max_acl_data_packet_length(void){ 1374 return hci_stack->acl_data_packet_length; 1375 } 1376 1377 #ifdef ENABLE_CLASSIC 1378 bool hci_extended_sco_link_supported(void){ 1379 // No. 31, byte 3, bit 7 1380 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1381 } 1382 #endif 1383 1384 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1385 // No. 54, byte 6, bit 6 1386 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1387 } 1388 1389 #ifdef ENABLE_CLASSIC 1390 static int gap_ssp_supported(void){ 1391 // No. 51, byte 6, bit 3 1392 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1393 } 1394 #endif 1395 1396 static int hci_classic_supported(void){ 1397 #ifdef ENABLE_CLASSIC 1398 // No. 37, byte 4, bit 5, = No BR/EDR Support 1399 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1400 #else 1401 return 0; 1402 #endif 1403 } 1404 1405 static int hci_le_supported(void){ 1406 #ifdef ENABLE_BLE 1407 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1408 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1409 #else 1410 return 0; 1411 #endif 1412 } 1413 1414 static bool hci_command_supported(uint8_t command_index){ 1415 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1416 } 1417 1418 #ifdef ENABLE_BLE 1419 1420 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1421 static bool hci_extended_advertising_supported(void){ 1422 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1423 } 1424 #endif 1425 1426 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1427 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1428 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1429 } else { 1430 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1431 } 1432 } 1433 1434 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1435 *addr_type = hci_stack->le_own_addr_type; 1436 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1437 } 1438 1439 #ifdef ENABLE_LE_PERIPHERAL 1440 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1441 *addr_type = hci_stack->le_advertisements_own_addr_type; 1442 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1443 }; 1444 #endif 1445 1446 #ifdef ENABLE_LE_CENTRAL 1447 1448 /** 1449 * @brief Get own addr type and address used for LE connections (Central) 1450 */ 1451 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1452 *addr_type = hci_stack->le_connection_own_addr_type; 1453 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1454 } 1455 1456 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1457 1458 uint16_t offset = 3; 1459 uint8_t num_reports = packet[offset]; 1460 offset += 1; 1461 1462 uint16_t i; 1463 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1464 for (i=0; (i<num_reports) && (offset < size);i++){ 1465 // sanity checks on data_length: 1466 uint8_t data_length = packet[offset + 8]; 1467 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1468 if ((offset + 9u + data_length + 1u) > size) return; 1469 // setup event 1470 uint8_t event_size = 10u + data_length; 1471 uint16_t pos = 0; 1472 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1473 event[pos++] = event_size; 1474 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1475 offset += 8; 1476 pos += 8; 1477 event[pos++] = packet[offset + 1 + data_length]; // rssi 1478 event[pos++] = data_length; 1479 offset++; 1480 (void)memcpy(&event[pos], &packet[offset], data_length); 1481 pos += data_length; 1482 offset += data_length + 1u; // rssi 1483 hci_emit_event(event, pos, 1); 1484 } 1485 } 1486 1487 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1488 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1489 uint16_t offset = 3; 1490 uint8_t num_reports = packet[offset++]; 1491 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1492 uint8_t i; 1493 for (i=0; (i<num_reports) && (offset < size);i++){ 1494 // sanity checks on data_length: 1495 uint16_t data_length = packet[offset + 23]; 1496 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1497 if ((offset + 24u + data_length) > size) return; 1498 uint16_t event_type = little_endian_read_16(packet, offset); 1499 offset += 2; 1500 if ((event_type & 0x10) != 0) { 1501 // setup legacy event 1502 uint8_t legacy_event_type; 1503 switch (event_type){ 1504 case 0b0010011: 1505 // ADV_IND 1506 legacy_event_type = 0; 1507 break; 1508 case 0b0010101: 1509 // ADV_DIRECT_IND 1510 legacy_event_type = 1; 1511 break; 1512 case 0b0010010: 1513 // ADV_SCAN_IND 1514 legacy_event_type = 2; 1515 break; 1516 case 0b0010000: 1517 // ADV_NONCONN_IND 1518 legacy_event_type = 3; 1519 break; 1520 case 0b0011011: 1521 case 0b0011010: 1522 // SCAN_RSP 1523 legacy_event_type = 4; 1524 break; 1525 default: 1526 legacy_event_type = 0; 1527 break; 1528 } 1529 uint16_t pos = 0; 1530 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1531 event[pos++] = 10u + data_length; 1532 event[pos++] = legacy_event_type; 1533 // copy address type + address 1534 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1535 offset += 7; 1536 pos += 7; 1537 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1538 offset += 4; 1539 // copy rssi 1540 event[pos++] = packet[offset++]; 1541 // skip periodic advertising interval and direct address 1542 offset += 9; 1543 // copy data len + data; 1544 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1545 pos += 1 +data_length; 1546 offset += 1+ data_length; 1547 hci_emit_event(event, pos, 1); 1548 } else { 1549 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1550 uint8_t report_len = 24 + data_length; 1551 event[1] = report_len; 1552 little_endian_store_16(event, 2, event_type); 1553 memcpy(&event[4], &packet[offset], report_len); 1554 offset += report_len; 1555 hci_emit_event(event, 2 + report_len, 1); 1556 } 1557 } 1558 } 1559 #endif 1560 1561 #endif 1562 #endif 1563 1564 #ifdef ENABLE_BLE 1565 #ifdef ENABLE_LE_PERIPHERAL 1566 static void hci_update_advertisements_enabled_for_current_roles(void){ 1567 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1568 // get number of active le slave connections 1569 int num_slave_connections = 0; 1570 btstack_linked_list_iterator_t it; 1571 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1572 while (btstack_linked_list_iterator_has_next(&it)){ 1573 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1574 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1575 if (con->state != OPEN) continue; 1576 if (con->role != HCI_ROLE_SLAVE) continue; 1577 if (!hci_is_le_connection(con)) continue; 1578 num_slave_connections++; 1579 } 1580 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1581 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1582 } else { 1583 hci_stack->le_advertisements_enabled_for_current_roles = false; 1584 } 1585 } 1586 #endif 1587 #endif 1588 1589 #ifdef ENABLE_CLASSIC 1590 static void gap_run_set_local_name(void){ 1591 hci_reserve_packet_buffer(); 1592 uint8_t * packet = hci_stack->hci_packet_buffer; 1593 // construct HCI Command and send 1594 uint16_t opcode = hci_write_local_name.opcode; 1595 hci_stack->last_cmd_opcode = opcode; 1596 packet[0] = opcode & 0xff; 1597 packet[1] = opcode >> 8; 1598 packet[2] = DEVICE_NAME_LEN; 1599 memset(&packet[3], 0, DEVICE_NAME_LEN); 1600 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1601 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1602 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1603 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1604 // expand '00:00:00:00:00:00' in name with bd_addr 1605 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1606 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1607 } 1608 1609 static void gap_run_set_eir_data(void){ 1610 hci_reserve_packet_buffer(); 1611 uint8_t * packet = hci_stack->hci_packet_buffer; 1612 // construct HCI Command in-place and send 1613 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1614 hci_stack->last_cmd_opcode = opcode; 1615 uint16_t offset = 0; 1616 packet[offset++] = opcode & 0xff; 1617 packet[offset++] = opcode >> 8; 1618 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1619 packet[offset++] = 0; // FEC not required 1620 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1621 if (hci_stack->eir_data){ 1622 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1623 ad_context_t context; 1624 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1625 uint8_t data_type = ad_iterator_get_data_type(&context); 1626 uint8_t size = ad_iterator_get_data_len(&context); 1627 const uint8_t *data = ad_iterator_get_data(&context); 1628 // copy item 1629 packet[offset++] = size + 1; 1630 packet[offset++] = data_type; 1631 memcpy(&packet[offset], data, size); 1632 // update name item 1633 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1634 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1635 } 1636 offset += size; 1637 } 1638 } else { 1639 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1640 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1641 packet[offset++] = bytes_to_copy + 1; 1642 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1643 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1644 // expand '00:00:00:00:00:00' in name with bd_addr 1645 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1646 } 1647 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1648 } 1649 1650 static void hci_run_gap_tasks_classic(void){ 1651 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1652 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1653 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1654 return; 1655 } 1656 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1657 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1658 gap_run_set_local_name(); 1659 return; 1660 } 1661 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1662 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1663 gap_run_set_eir_data(); 1664 return; 1665 } 1666 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1667 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1668 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1669 return; 1670 } 1671 // write page scan activity 1672 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1673 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1674 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1675 return; 1676 } 1677 // write page scan type 1678 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1679 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1680 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1681 return; 1682 } 1683 // write page timeout 1684 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1685 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1686 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1687 return; 1688 } 1689 // send scan enable 1690 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1691 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1692 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1693 return; 1694 } 1695 // send write scan activity 1696 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1697 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1698 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1699 return; 1700 } 1701 } 1702 #endif 1703 1704 #ifndef HAVE_HOST_CONTROLLER_API 1705 1706 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1707 if (!hci_stack->config) return 0; 1708 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1709 // Limit baud rate for Broadcom chipsets to 3 mbps 1710 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1711 baud_rate = 3000000; 1712 } 1713 return baud_rate; 1714 } 1715 1716 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1717 UNUSED(ds); 1718 1719 switch (hci_stack->substate){ 1720 case HCI_INIT_W4_SEND_RESET: 1721 log_info("Resend HCI Reset"); 1722 hci_stack->substate = HCI_INIT_SEND_RESET; 1723 hci_stack->num_cmd_packets = 1; 1724 hci_run(); 1725 break; 1726 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1727 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1728 if (hci_stack->hci_transport->reset_link){ 1729 hci_stack->hci_transport->reset_link(); 1730 } 1731 1732 /* fall through */ 1733 1734 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1735 log_info("Resend HCI Reset - CSR Warm Boot"); 1736 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1737 hci_stack->num_cmd_packets = 1; 1738 hci_run(); 1739 break; 1740 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1741 if (hci_stack->hci_transport->set_baudrate){ 1742 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1743 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1744 hci_stack->hci_transport->set_baudrate(baud_rate); 1745 } 1746 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1747 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1748 if (hci_stack->hci_transport->reset_link){ 1749 log_info("Link Reset"); 1750 hci_stack->hci_transport->reset_link(); 1751 } 1752 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1753 hci_run(); 1754 } 1755 break; 1756 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1757 // otherwise continue 1758 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1759 hci_send_cmd(&hci_read_local_supported_commands); 1760 break; 1761 default: 1762 break; 1763 } 1764 } 1765 #endif 1766 1767 static void hci_initializing_next_state(void){ 1768 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1769 } 1770 1771 static void hci_init_done(void){ 1772 // done. tell the app 1773 log_info("hci_init_done -> HCI_STATE_WORKING"); 1774 hci_stack->state = HCI_STATE_WORKING; 1775 hci_emit_state(); 1776 } 1777 1778 // assumption: hci_can_send_command_packet_now() == true 1779 static void hci_initializing_run(void){ 1780 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1781 1782 if (!hci_can_send_command_packet_now()) return; 1783 1784 #ifndef HAVE_HOST_CONTROLLER_API 1785 bool need_baud_change = hci_stack->config 1786 && hci_stack->chipset 1787 && hci_stack->chipset->set_baudrate_command 1788 && hci_stack->hci_transport->set_baudrate 1789 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1790 #endif 1791 1792 switch (hci_stack->substate){ 1793 case HCI_INIT_SEND_RESET: 1794 hci_state_reset(); 1795 1796 #ifndef HAVE_HOST_CONTROLLER_API 1797 // prepare reset if command complete not received in 100ms 1798 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1799 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1800 btstack_run_loop_add_timer(&hci_stack->timeout); 1801 #endif 1802 // send command 1803 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1804 hci_send_cmd(&hci_reset); 1805 break; 1806 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1807 hci_send_cmd(&hci_read_local_version_information); 1808 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1809 break; 1810 1811 #ifndef HAVE_HOST_CONTROLLER_API 1812 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1813 hci_state_reset(); 1814 // prepare reset if command complete not received in 100ms 1815 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1816 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1817 btstack_run_loop_add_timer(&hci_stack->timeout); 1818 // send command 1819 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1820 hci_send_cmd(&hci_reset); 1821 break; 1822 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1823 hci_state_reset(); 1824 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1825 hci_send_cmd(&hci_reset); 1826 break; 1827 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1828 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1829 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1830 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1831 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1832 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1833 break; 1834 } 1835 case HCI_INIT_SET_BD_ADDR: 1836 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1837 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1838 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1839 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1840 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1841 break; 1842 case HCI_INIT_SEND_READ_LOCAL_NAME: 1843 #ifdef ENABLE_CLASSIC 1844 hci_send_cmd(&hci_read_local_name); 1845 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1846 break; 1847 #endif 1848 /* fall through */ 1849 1850 case HCI_INIT_SEND_BAUD_CHANGE: 1851 if (need_baud_change) { 1852 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1853 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1854 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1855 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1856 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1857 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1858 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1859 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1860 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1861 btstack_run_loop_add_timer(&hci_stack->timeout); 1862 } 1863 break; 1864 } 1865 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1866 1867 /* fall through */ 1868 1869 case HCI_INIT_CUSTOM_INIT: 1870 case HCI_INIT_CUSTOM_PRE_INIT: 1871 // Custom initialization 1872 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1873 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1874 bool send_cmd = false; 1875 switch (hci_stack->chipset_result){ 1876 case BTSTACK_CHIPSET_VALID_COMMAND: 1877 send_cmd = true; 1878 switch (hci_stack->substate){ 1879 case HCI_INIT_CUSTOM_INIT: 1880 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1881 break; 1882 case HCI_INIT_CUSTOM_PRE_INIT: 1883 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1884 break; 1885 default: 1886 btstack_assert(false); 1887 break; 1888 } 1889 break; 1890 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1891 send_cmd = true; 1892 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1893 log_info("CSR Warm Boot"); 1894 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1895 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1896 btstack_run_loop_add_timer(&hci_stack->timeout); 1897 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1898 && hci_stack->config 1899 && hci_stack->chipset 1900 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1901 && hci_stack->hci_transport->set_baudrate 1902 && hci_transport_uart_get_main_baud_rate()){ 1903 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1904 } else { 1905 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1906 } 1907 break; 1908 default: 1909 break; 1910 } 1911 1912 if (send_cmd){ 1913 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1914 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1915 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1916 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1917 break; 1918 } 1919 log_info("Init script done"); 1920 1921 // Custom Pre-Init complete, start regular init with HCI Reset 1922 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1923 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1924 hci_send_cmd(&hci_reset); 1925 break; 1926 } 1927 1928 // Init script download on Broadcom chipsets causes: 1929 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1930 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1931 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1932 1933 // - baud rate to reset, restore UART baud rate if needed 1934 if (need_baud_change) { 1935 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1936 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1937 hci_stack->hci_transport->set_baudrate(baud_rate); 1938 } 1939 1940 uint16_t bcm_delay_ms = 300; 1941 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1942 // -> Work around: wait here. 1943 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1944 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1945 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1946 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1947 btstack_run_loop_add_timer(&hci_stack->timeout); 1948 break; 1949 } 1950 } 1951 #endif 1952 /* fall through */ 1953 1954 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1955 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1956 hci_send_cmd(&hci_read_local_supported_commands); 1957 break; 1958 case HCI_INIT_READ_BD_ADDR: 1959 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1960 hci_send_cmd(&hci_read_bd_addr); 1961 break; 1962 case HCI_INIT_READ_BUFFER_SIZE: 1963 // only read buffer size if supported 1964 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1965 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1966 hci_send_cmd(&hci_read_buffer_size); 1967 break; 1968 } 1969 1970 /* fall through */ 1971 1972 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1973 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1974 hci_send_cmd(&hci_read_local_supported_features); 1975 break; 1976 1977 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1978 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1979 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1980 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1981 break; 1982 case HCI_INIT_HOST_BUFFER_SIZE: 1983 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1984 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1985 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1986 break; 1987 #endif 1988 1989 case HCI_INIT_SET_EVENT_MASK: 1990 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1991 if (hci_le_supported()){ 1992 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1993 } else { 1994 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1995 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1996 } 1997 break; 1998 1999 case HCI_INIT_SET_EVENT_MASK_2: 2000 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2001 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2002 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2003 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2004 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2005 // Encryption Change Event v2 - bit 25 2006 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2007 break; 2008 } 2009 2010 #ifdef ENABLE_CLASSIC 2011 /* fall through */ 2012 2013 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2014 if (hci_classic_supported() && gap_ssp_supported()){ 2015 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2016 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2017 break; 2018 } 2019 2020 /* fall through */ 2021 2022 case HCI_INIT_WRITE_INQUIRY_MODE: 2023 if (hci_classic_supported()){ 2024 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2025 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2026 break; 2027 } 2028 2029 /* fall through */ 2030 2031 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2032 // skip write secure connections host support if not supported or disabled 2033 if (hci_classic_supported() && hci_stack->secure_connections_enable 2034 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2035 hci_stack->secure_connections_active = true; 2036 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2037 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2038 break; 2039 } 2040 2041 /* fall through */ 2042 2043 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2044 // skip set min encryption key size 2045 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2046 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2047 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2048 break; 2049 } 2050 2051 #ifdef ENABLE_SCO_OVER_HCI 2052 /* fall through */ 2053 2054 // only sent if ENABLE_SCO_OVER_HCI is defined 2055 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2056 // skip write synchronous flow control if not supported 2057 if (hci_classic_supported() 2058 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2059 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2060 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2061 break; 2062 } 2063 /* fall through */ 2064 2065 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2066 // skip write default erroneous data reporting if not supported 2067 if (hci_classic_supported() 2068 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2069 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2070 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2071 break; 2072 } 2073 #endif 2074 2075 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2076 /* fall through */ 2077 2078 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2079 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2080 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2081 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2082 #ifdef ENABLE_SCO_OVER_HCI 2083 log_info("BCM: Route SCO data via HCI transport"); 2084 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2085 #endif 2086 #ifdef ENABLE_SCO_OVER_PCM 2087 log_info("BCM: Route SCO data via PCM interface"); 2088 #ifdef ENABLE_BCM_PCM_WBS 2089 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2090 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2091 #else 2092 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2093 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2094 #endif 2095 #endif 2096 break; 2097 } 2098 #endif 2099 2100 #ifdef ENABLE_SCO_OVER_PCM 2101 /* fall through */ 2102 2103 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2104 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2105 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2106 log_info("BCM: Config PCM interface for I2S"); 2107 #ifdef ENABLE_BCM_PCM_WBS 2108 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2109 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2110 #else 2111 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2112 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2113 #endif 2114 break; 2115 } 2116 #endif 2117 #endif 2118 2119 #ifdef ENABLE_BLE 2120 /* fall through */ 2121 2122 // LE INIT 2123 case HCI_INIT_LE_READ_BUFFER_SIZE: 2124 if (hci_le_supported()){ 2125 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2126 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2127 hci_send_cmd(&hci_le_read_buffer_size_v2); 2128 } else { 2129 hci_send_cmd(&hci_le_read_buffer_size); 2130 } 2131 break; 2132 } 2133 2134 /* fall through */ 2135 2136 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2137 // skip write le host if not supported (e.g. on LE only EM9301) 2138 if (hci_le_supported() 2139 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2140 // LE Supported Host = 1, Simultaneous Host = 0 2141 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2142 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2143 break; 2144 } 2145 2146 /* fall through */ 2147 2148 case HCI_INIT_LE_SET_EVENT_MASK: 2149 if (hci_le_supported()){ 2150 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2151 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2152 break; 2153 } 2154 #endif 2155 2156 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2157 /* fall through */ 2158 2159 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2160 if (hci_le_supported() 2161 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2162 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2163 hci_send_cmd(&hci_le_read_maximum_data_length); 2164 break; 2165 } 2166 2167 /* fall through */ 2168 2169 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2170 if (hci_le_supported() 2171 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2172 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2173 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2174 break; 2175 } 2176 #endif 2177 2178 #ifdef ENABLE_LE_CENTRAL 2179 /* fall through */ 2180 2181 case HCI_INIT_READ_WHITE_LIST_SIZE: 2182 if (hci_le_supported()){ 2183 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2184 hci_send_cmd(&hci_le_read_white_list_size); 2185 break; 2186 } 2187 2188 #endif 2189 2190 #ifdef ENABLE_LE_PERIPHERAL 2191 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2192 /* fall through */ 2193 2194 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2195 if (hci_extended_advertising_supported()){ 2196 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2197 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2198 break; 2199 } 2200 #endif 2201 #endif 2202 /* fall through */ 2203 2204 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2205 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2206 if (hci_le_supported()) { 2207 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2208 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2209 break; 2210 } 2211 #endif 2212 2213 /* fall through */ 2214 2215 case HCI_INIT_DONE: 2216 hci_stack->substate = HCI_INIT_DONE; 2217 // main init sequence complete 2218 #ifdef ENABLE_CLASSIC 2219 // check if initial Classic GAP Tasks are completed 2220 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2221 hci_run_gap_tasks_classic(); 2222 break; 2223 } 2224 #endif 2225 #ifdef ENABLE_BLE 2226 #ifdef ENABLE_LE_CENTRAL 2227 // check if initial LE GAP Tasks are completed 2228 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2229 hci_run_general_gap_le(); 2230 break; 2231 } 2232 #endif 2233 #endif 2234 hci_init_done(); 2235 break; 2236 2237 default: 2238 return; 2239 } 2240 } 2241 2242 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2243 bool command_completed = false; 2244 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2245 uint16_t opcode = little_endian_read_16(packet,3); 2246 if (opcode == hci_stack->last_cmd_opcode){ 2247 command_completed = true; 2248 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2249 } else { 2250 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2251 } 2252 } 2253 2254 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2255 uint8_t status = packet[2]; 2256 uint16_t opcode = little_endian_read_16(packet,4); 2257 if (opcode == hci_stack->last_cmd_opcode){ 2258 if (status){ 2259 command_completed = true; 2260 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2261 } else { 2262 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2263 } 2264 } else { 2265 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2266 } 2267 } 2268 #ifndef HAVE_HOST_CONTROLLER_API 2269 // Vendor == CSR 2270 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2271 // TODO: track actual command 2272 command_completed = true; 2273 } 2274 2275 // Vendor == Toshiba 2276 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2277 // TODO: track actual command 2278 command_completed = true; 2279 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2280 hci_stack->num_cmd_packets = 1; 2281 } 2282 #endif 2283 2284 return command_completed; 2285 } 2286 2287 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2288 2289 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2290 2291 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2292 2293 #ifndef HAVE_HOST_CONTROLLER_API 2294 2295 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2296 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2297 // 2298 // HCI Reset 2299 // Timeout 100 ms 2300 // HCI Reset 2301 // Command Complete Reset 2302 // HCI Read Local Version Information 2303 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2304 // hang... 2305 // 2306 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2307 if (!command_completed 2308 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2309 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2310 2311 uint16_t opcode = little_endian_read_16(packet,3); 2312 if (opcode == hci_reset.opcode){ 2313 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2314 return; 2315 } 2316 } 2317 2318 // CSR & H5 2319 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2320 if (!command_completed 2321 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2322 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2323 2324 uint16_t opcode = little_endian_read_16(packet,3); 2325 if (opcode == hci_reset.opcode){ 2326 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2327 return; 2328 } 2329 } 2330 2331 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2332 // fix: Correct substate and behave as command below 2333 if (command_completed){ 2334 switch (hci_stack->substate){ 2335 case HCI_INIT_SEND_RESET: 2336 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2337 break; 2338 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2339 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2340 break; 2341 default: 2342 break; 2343 } 2344 } 2345 2346 #endif 2347 2348 if (!command_completed) return; 2349 2350 bool need_baud_change = false; 2351 bool need_addr_change = false; 2352 2353 #ifndef HAVE_HOST_CONTROLLER_API 2354 need_baud_change = hci_stack->config 2355 && hci_stack->chipset 2356 && hci_stack->chipset->set_baudrate_command 2357 && hci_stack->hci_transport->set_baudrate 2358 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2359 2360 need_addr_change = hci_stack->custom_bd_addr_set 2361 && hci_stack->chipset 2362 && hci_stack->chipset->set_bd_addr_command; 2363 #endif 2364 2365 switch(hci_stack->substate){ 2366 2367 #ifndef HAVE_HOST_CONTROLLER_API 2368 case HCI_INIT_SEND_RESET: 2369 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2370 // fix: just correct substate and behave as command below 2371 2372 /* fall through */ 2373 #endif 2374 2375 case HCI_INIT_W4_SEND_RESET: 2376 btstack_run_loop_remove_timer(&hci_stack->timeout); 2377 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2378 return; 2379 2380 #ifndef HAVE_HOST_CONTROLLER_API 2381 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2382 // for STLC2500D, baud rate change already happened. 2383 // for others, baud rate gets changed now 2384 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2385 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2386 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2387 hci_stack->hci_transport->set_baudrate(baud_rate); 2388 } 2389 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2390 return; 2391 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2392 btstack_run_loop_remove_timer(&hci_stack->timeout); 2393 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2394 return; 2395 case HCI_INIT_W4_CUSTOM_INIT: 2396 // repeat custom init 2397 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2398 return; 2399 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2400 // repeat custom init 2401 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2402 return; 2403 #endif 2404 2405 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2406 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2407 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2408 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2409 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2410 return; 2411 } 2412 if (need_addr_change){ 2413 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2414 return; 2415 } 2416 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2417 return; 2418 #ifndef HAVE_HOST_CONTROLLER_API 2419 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2420 if (need_baud_change){ 2421 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2422 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2423 hci_stack->hci_transport->set_baudrate(baud_rate); 2424 } 2425 if (need_addr_change){ 2426 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2427 return; 2428 } 2429 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2430 return; 2431 case HCI_INIT_W4_SET_BD_ADDR: 2432 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2433 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2434 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2435 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2436 return; 2437 } 2438 // skipping st warm boot 2439 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2440 return; 2441 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2442 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2443 return; 2444 #endif 2445 2446 case HCI_INIT_DONE: 2447 // set state if we came here by fall through 2448 hci_stack->substate = HCI_INIT_DONE; 2449 return; 2450 2451 default: 2452 break; 2453 } 2454 hci_initializing_next_state(); 2455 } 2456 2457 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2458 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2459 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2460 // check if we have been aware of the HCI connection 2461 switch (conn->state){ 2462 case SENT_CREATE_CONNECTION: 2463 case RECEIVED_CONNECTION_REQUEST: 2464 case ACCEPTED_CONNECTION_REQUEST: 2465 break; 2466 default: 2467 return; 2468 } 2469 2470 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2471 bd_addr_t bd_address; 2472 (void)memcpy(&bd_address, conn->address, 6); 2473 2474 #ifdef ENABLE_CLASSIC 2475 // cache needed data 2476 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2477 #endif 2478 2479 // connection failed, remove entry 2480 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2481 btstack_memory_hci_connection_free( conn ); 2482 2483 #ifdef ENABLE_CLASSIC 2484 // notify client if dedicated bonding 2485 if (notify_dedicated_bonding_failed){ 2486 log_info("hci notify_dedicated_bonding_failed"); 2487 hci_emit_dedicated_bonding_result(bd_address, status); 2488 } 2489 2490 // if authentication error, also delete link key 2491 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2492 gap_drop_link_key_for_bd_addr(bd_address); 2493 } 2494 #else 2495 UNUSED(status); 2496 #endif 2497 } 2498 2499 #ifdef ENABLE_CLASSIC 2500 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2501 // SSP Controller 2502 if (features[6] & (1 << 3)){ 2503 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2504 } 2505 // eSCO 2506 if (features[3] & (1<<7)){ 2507 conn->remote_supported_features[0] |= 1; 2508 } 2509 // Extended features 2510 if (features[7] & (1<<7)){ 2511 conn->remote_supported_features[0] |= 2; 2512 } 2513 } 2514 2515 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2516 // SSP Host 2517 if (features[0] & (1 << 0)){ 2518 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2519 } 2520 // SC Host 2521 if (features[0] & (1 << 3)){ 2522 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2523 } 2524 } 2525 2526 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2527 // SC Controller 2528 if (features[1] & (1 << 0)){ 2529 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2530 } 2531 } 2532 2533 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2534 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2535 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2536 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2537 if (conn->bonding_flags & BONDING_DEDICATED){ 2538 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2539 } 2540 } 2541 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2542 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2543 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2544 } 2545 2546 #endif 2547 2548 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2549 // handle BT initialization 2550 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2551 hci_initializing_event_handler(packet, size); 2552 } 2553 2554 // help with BT sleep 2555 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2556 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2557 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2558 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2559 hci_initializing_next_state(); 2560 } 2561 } 2562 2563 #ifdef ENABLE_CLASSIC 2564 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2565 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2566 conn->encryption_key_size = encryption_key_size; 2567 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2568 2569 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2570 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2571 conn->bonding_flags &= ~BONDING_DEDICATED; 2572 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2573 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2574 return; 2575 } 2576 2577 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2578 conn->requested_security_level = LEVEL_0; 2579 hci_emit_security_level(conn->con_handle, security_level); 2580 return; 2581 } 2582 2583 // Request remote features if not already done 2584 hci_trigger_remote_features_for_connection(conn); 2585 2586 // Request Authentication if not already done 2587 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2588 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2589 } 2590 #endif 2591 2592 static void hci_store_local_supported_commands(const uint8_t * packet){ 2593 // create mapping table 2594 #define X(name, offset, bit) { offset, bit }, 2595 static struct { 2596 uint8_t byte_offset; 2597 uint8_t bit_position; 2598 } supported_hci_commands_map [] = { 2599 SUPPORTED_HCI_COMMANDS 2600 }; 2601 #undef X 2602 2603 // create names for debug purposes 2604 #ifdef ENABLE_LOG_DEBUG 2605 #define X(name, offset, bit) #name, 2606 static const char * command_names[] = { 2607 SUPPORTED_HCI_COMMANDS 2608 }; 2609 #undef X 2610 #endif 2611 2612 hci_stack->local_supported_commands = 0; 2613 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2614 uint16_t i; 2615 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2616 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2617 #ifdef ENABLE_LOG_DEBUG 2618 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); 2619 #else 2620 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2621 #endif 2622 hci_stack->local_supported_commands |= (1LU << i); 2623 } 2624 } 2625 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2626 } 2627 2628 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2629 UNUSED(size); 2630 2631 uint16_t manufacturer; 2632 #ifdef ENABLE_CLASSIC 2633 hci_con_handle_t handle; 2634 hci_connection_t * conn; 2635 #endif 2636 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2637 uint8_t status; 2638 #endif 2639 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2640 le_audio_cig_t * cig; 2641 #endif 2642 2643 // get num cmd packets - limit to 1 to reduce complexity 2644 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2645 2646 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2647 switch (opcode){ 2648 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2649 if (packet[5]) break; 2650 // terminate, name 248 chars 2651 packet[6+248] = 0; 2652 log_info("local name: %s", &packet[6]); 2653 break; 2654 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2655 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2656 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2657 uint16_t acl_len = little_endian_read_16(packet, 6); 2658 uint16_t sco_len = packet[8]; 2659 2660 // determine usable ACL/SCO payload size 2661 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2662 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2663 2664 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2665 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2666 2667 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2668 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2669 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2670 } 2671 break; 2672 case HCI_OPCODE_HCI_READ_RSSI: 2673 if (packet[5] == ERROR_CODE_SUCCESS){ 2674 uint8_t event[5]; 2675 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2676 event[1] = 3; 2677 (void)memcpy(&event[2], &packet[6], 3); 2678 hci_emit_event(event, sizeof(event), 1); 2679 } 2680 break; 2681 #ifdef ENABLE_BLE 2682 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2683 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2684 hci_stack->le_iso_packets_total_num = packet[11]; 2685 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2686 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2687 2688 /* fall through */ 2689 2690 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2691 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2692 hci_stack->le_acl_packets_total_num = packet[8]; 2693 // determine usable ACL payload size 2694 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2695 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2696 } 2697 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); 2698 break; 2699 #endif 2700 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2701 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2702 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2703 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2704 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); 2705 break; 2706 #endif 2707 #ifdef ENABLE_LE_CENTRAL 2708 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2709 hci_stack->le_whitelist_capacity = packet[6]; 2710 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2711 break; 2712 #endif 2713 #ifdef ENABLE_LE_PERIPHERAL 2714 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2715 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2716 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2717 break; 2718 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2719 if (hci_stack->le_advertising_set_in_current_command != 0) { 2720 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2721 hci_stack->le_advertising_set_in_current_command = 0; 2722 if (advertising_set == NULL) break; 2723 uint8_t adv_status = packet[6]; 2724 uint8_t tx_power = packet[7]; 2725 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 }; 2726 if (adv_status == 0){ 2727 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2728 } 2729 hci_emit_event(event, sizeof(event), 1); 2730 } 2731 break; 2732 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2733 if (hci_stack->le_advertising_set_in_current_command != 0) { 2734 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2735 hci_stack->le_advertising_set_in_current_command = 0; 2736 if (advertising_set == NULL) break; 2737 uint8_t adv_status = packet[5]; 2738 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2739 if (adv_status == 0){ 2740 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2741 } 2742 hci_emit_event(event, sizeof(event), 1); 2743 } 2744 break; 2745 #endif 2746 #endif 2747 case HCI_OPCODE_HCI_READ_BD_ADDR: 2748 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2749 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)); 2750 #ifdef ENABLE_CLASSIC 2751 if (hci_stack->link_key_db){ 2752 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2753 } 2754 #endif 2755 break; 2756 #ifdef ENABLE_CLASSIC 2757 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2758 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2759 break; 2760 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2761 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2762 if (status == ERROR_CODE_SUCCESS) { 2763 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2764 } else { 2765 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2766 } 2767 break; 2768 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2769 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2770 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2771 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2772 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2773 hci_emit_event(event, sizeof(event), 1); 2774 } 2775 break; 2776 #endif 2777 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2778 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2779 2780 #ifdef ENABLE_CLASSIC 2781 // determine usable ACL packet types based on host buffer size and supported features 2782 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2783 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2784 #endif 2785 // Classic/LE 2786 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2787 break; 2788 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2789 manufacturer = little_endian_read_16(packet, 10); 2790 // map Cypress & Infineon to Broadcom 2791 switch (manufacturer){ 2792 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2793 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2794 log_info("Treat Cypress/Infineon as Broadcom"); 2795 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2796 little_endian_store_16(packet, 10, manufacturer); 2797 break; 2798 default: 2799 break; 2800 } 2801 hci_stack->manufacturer = manufacturer; 2802 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2803 break; 2804 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2805 hci_store_local_supported_commands(packet); 2806 break; 2807 #ifdef ENABLE_CLASSIC 2808 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2809 if (packet[5]) return; 2810 hci_stack->synchronous_flow_control_enabled = 1; 2811 break; 2812 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2813 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2814 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2815 conn = hci_connection_for_handle(handle); 2816 if (conn != NULL) { 2817 uint8_t key_size = 0; 2818 if (status == 0){ 2819 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2820 log_info("Handle %04x key Size: %u", handle, key_size); 2821 } else { 2822 key_size = 1; 2823 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2824 } 2825 hci_handle_read_encryption_key_size_complete(conn, key_size); 2826 } 2827 break; 2828 // assert pairing complete event is emitted. 2829 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2830 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2831 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2832 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2833 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2834 // lookup connection by gap pairing addr 2835 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2836 if (conn == NULL) break; 2837 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2838 break; 2839 2840 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2841 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2842 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2843 uint8_t event[67]; 2844 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2845 event[1] = 65; 2846 (void)memset(&event[2], 0, 65); 2847 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2848 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2849 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2850 event[2] = 3; 2851 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2852 } else { 2853 event[2] = 1; 2854 } 2855 } 2856 hci_emit_event(event, sizeof(event), 0); 2857 break; 2858 } 2859 2860 // note: only needed if user does not provide OOB data 2861 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2862 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2863 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2864 if (conn == NULL) break; 2865 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2866 break; 2867 #endif 2868 #endif 2869 #ifdef ENABLE_BLE 2870 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2871 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2872 // lookup CIG 2873 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2874 if (cig != NULL){ 2875 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2876 uint8_t i = 0; 2877 if (status == ERROR_CODE_SUCCESS){ 2878 // assign CIS handles to pre-allocated CIS 2879 btstack_linked_list_iterator_t it; 2880 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2881 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2882 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2883 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2884 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2885 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2886 iso_stream->cis_handle = cis_handle; 2887 cig->cis_con_handles[i] = cis_handle; 2888 i++; 2889 } 2890 } 2891 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2892 hci_emit_cig_created(cig, status); 2893 } else { 2894 hci_emit_cig_created(cig, status); 2895 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2896 } 2897 } 2898 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2899 break; 2900 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2901 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2902 if (status != ERROR_CODE_SUCCESS){ 2903 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2904 } 2905 break; 2906 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2907 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2908 if (status != ERROR_CODE_SUCCESS){ 2909 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2910 } 2911 break; 2912 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2913 // lookup BIG by state 2914 btstack_linked_list_iterator_t it; 2915 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2916 while (btstack_linked_list_iterator_has_next(&it)) { 2917 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2918 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2919 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2920 if (status == ERROR_CODE_SUCCESS){ 2921 big->state_vars.next_bis++; 2922 if (big->state_vars.next_bis == big->num_bis){ 2923 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2924 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2925 } else { 2926 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2927 } 2928 } else { 2929 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2930 big->state_vars.status = status; 2931 } 2932 return; 2933 } 2934 } 2935 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2936 while (btstack_linked_list_iterator_has_next(&it)) { 2937 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2938 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2939 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2940 if (status == ERROR_CODE_SUCCESS){ 2941 big_sync->state_vars.next_bis++; 2942 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2943 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2944 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2945 } else { 2946 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2947 } 2948 } else { 2949 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2950 big_sync->state_vars.status = status; 2951 } 2952 return; 2953 } 2954 } 2955 // Lookup CIS via active group operation 2956 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2957 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2958 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2959 2960 // lookup CIS by state 2961 btstack_linked_list_iterator_t it; 2962 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2963 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2964 while (btstack_linked_list_iterator_has_next(&it)){ 2965 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2966 handle = iso_stream->cis_handle; 2967 bool emit_cis_created = false; 2968 switch (iso_stream->state){ 2969 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2970 if (status != ERROR_CODE_SUCCESS){ 2971 emit_cis_created = true; 2972 break; 2973 } 2974 if (iso_stream->max_sdu_c_to_p > 0){ 2975 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2976 } else { 2977 emit_cis_created = true; 2978 } 2979 break; 2980 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2981 emit_cis_created = true; 2982 break; 2983 default: 2984 break; 2985 } 2986 if (emit_cis_created){ 2987 hci_cis_handle_created(iso_stream, status); 2988 } 2989 } 2990 } else { 2991 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2992 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2993 if (cig != NULL) { 2994 // emit cis created if all ISO Paths have been created 2995 // assume we are central 2996 uint8_t cis_index = cig->state_vars.next_cis >> 1; 2997 uint8_t cis_direction = cig->state_vars.next_cis & 1; 2998 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 2999 // if outgoing has been setup, or incoming was setup but outgoing not required 3000 if ((cis_direction == 1) || (outgoing_needed == false)){ 3001 // lookup iso stream by cig/cis 3002 while (btstack_linked_list_iterator_has_next(&it)) { 3003 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3004 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3005 hci_cis_handle_created(iso_stream, status); 3006 } 3007 } 3008 } 3009 // next state 3010 cig->state_vars.next_cis++; 3011 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3012 } 3013 } 3014 } 3015 break; 3016 } 3017 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3018 // lookup BIG by state 3019 btstack_linked_list_iterator_t it; 3020 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3021 while (btstack_linked_list_iterator_has_next(&it)) { 3022 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3023 uint8_t big_handle = big_sync->big_handle; 3024 switch (big_sync->state){ 3025 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3026 btstack_linked_list_iterator_remove(&it); 3027 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3028 return; 3029 default: 3030 btstack_linked_list_iterator_remove(&it); 3031 hci_emit_big_sync_stopped(big_handle); 3032 return; 3033 } 3034 } 3035 break; 3036 } 3037 #endif 3038 #endif 3039 default: 3040 break; 3041 } 3042 } 3043 3044 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3045 UNUSED(size); 3046 3047 // get num cmd packets - limit to 1 to reduce complexity 3048 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3049 3050 // get opcode and command status 3051 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3052 3053 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3054 uint8_t status = hci_event_command_status_get_status(packet); 3055 #endif 3056 3057 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3058 bd_addr_type_t addr_type; 3059 bd_addr_t addr; 3060 #endif 3061 3062 switch (opcode){ 3063 #ifdef ENABLE_CLASSIC 3064 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3065 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3066 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3067 #endif 3068 #ifdef ENABLE_LE_CENTRAL 3069 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3070 #endif 3071 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3072 addr_type = hci_stack->outgoing_addr_type; 3073 memcpy(addr, hci_stack->outgoing_addr, 6); 3074 3075 // reset outgoing address info 3076 memset(hci_stack->outgoing_addr, 0, 6); 3077 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3078 3079 // on error 3080 if (status != ERROR_CODE_SUCCESS){ 3081 #ifdef ENABLE_LE_CENTRAL 3082 if (hci_is_le_connection_type(addr_type)){ 3083 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3084 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3085 } 3086 #endif 3087 // error => outgoing connection failed 3088 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3089 if (conn != NULL){ 3090 hci_handle_connection_failed(conn, status); 3091 } 3092 } 3093 break; 3094 #endif 3095 #ifdef ENABLE_CLASSIC 3096 case HCI_OPCODE_HCI_INQUIRY: 3097 if (status == ERROR_CODE_SUCCESS) { 3098 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3099 } else { 3100 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3101 } 3102 break; 3103 #endif 3104 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3105 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3106 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3107 if (status == ERROR_CODE_SUCCESS){ 3108 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3109 } else { 3110 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3111 } 3112 break; 3113 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3114 default: 3115 break; 3116 } 3117 } 3118 3119 #ifdef ENABLE_BLE 3120 static void event_handle_le_connection_complete(const uint8_t * packet){ 3121 bd_addr_t addr; 3122 bd_addr_type_t addr_type; 3123 hci_connection_t * conn; 3124 3125 // Connection management 3126 reverse_bd_addr(&packet[8], addr); 3127 addr_type = (bd_addr_type_t)packet[7]; 3128 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3129 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3130 3131 #ifdef ENABLE_LE_CENTRAL 3132 // handle error: error is reported only to the initiator -> outgoing connection 3133 if (packet[3]){ 3134 3135 // handle cancelled outgoing connection 3136 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3137 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3138 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3139 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3140 // reset state 3141 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3142 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3143 // get outgoing connection conn struct for direct connect 3144 conn = gap_get_outgoing_connection(); 3145 } 3146 3147 // outgoing le connection establishment is done 3148 if (conn){ 3149 // remove entry 3150 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3151 btstack_memory_hci_connection_free( conn ); 3152 } 3153 return; 3154 } 3155 #endif 3156 3157 // on success, both hosts receive connection complete event 3158 if (packet[6] == HCI_ROLE_MASTER){ 3159 #ifdef ENABLE_LE_CENTRAL 3160 // if we're master on an le connection, it was an outgoing connection and we're done with it 3161 // note: no hci_connection_t object exists yet for connect with whitelist 3162 if (hci_is_le_connection_type(addr_type)){ 3163 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3164 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3165 } 3166 #endif 3167 } else { 3168 #ifdef ENABLE_LE_PERIPHERAL 3169 // if we're slave, it was an incoming connection, advertisements have stopped 3170 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3171 #endif 3172 } 3173 3174 // LE connections are auto-accepted, so just create a connection if there isn't one already 3175 if (!conn){ 3176 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3177 } 3178 3179 // no memory, sorry. 3180 if (!conn){ 3181 return; 3182 } 3183 3184 conn->state = OPEN; 3185 conn->role = packet[6]; 3186 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3187 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3188 3189 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3190 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3191 3192 #ifdef ENABLE_LE_PERIPHERAL 3193 if (packet[6] == HCI_ROLE_SLAVE){ 3194 hci_update_advertisements_enabled_for_current_roles(); 3195 } 3196 #endif 3197 3198 // init unenhanced att bearer mtu 3199 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3200 conn->att_connection.mtu_exchanged = false; 3201 3202 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3203 3204 // restart timer 3205 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3206 // btstack_run_loop_add_timer(&conn->timeout); 3207 3208 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3209 3210 hci_emit_nr_connections_changed(); 3211 } 3212 #endif 3213 3214 #ifdef ENABLE_CLASSIC 3215 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){ 3216 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3217 // LEVEL_4 is tested by l2cap 3218 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3219 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3220 if (level >= LEVEL_3){ 3221 // MITM not possible without keyboard or display 3222 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3223 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3224 3225 // MITM possible if one side has keyboard and the other has keyboard or display 3226 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3227 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3228 3229 // MITM not possible if one side has only display and other side has no keyboard 3230 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3231 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3232 } 3233 // LEVEL 2 requires SSP, which is a given 3234 return true; 3235 } 3236 3237 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3238 // get requested security level 3239 gap_security_level_t requested_security_level = conn->requested_security_level; 3240 if (hci_stack->gap_secure_connections_only_mode){ 3241 requested_security_level = LEVEL_4; 3242 } 3243 3244 // assess security: LEVEL 4 requires SC 3245 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3246 if ((requested_security_level == LEVEL_4) && 3247 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3248 !hci_remote_sc_enabled(conn)){ 3249 log_info("Level 4 required, but SC not supported -> abort"); 3250 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3251 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3252 return; 3253 } 3254 3255 // assess security based on io capabilities 3256 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3257 // responder: fully validate io caps of both sides as well as OOB data 3258 bool security_possible = false; 3259 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3260 3261 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3262 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3263 // so we merge the OOB data availability 3264 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3265 if (conn->classic_oob_c_192 != NULL){ 3266 have_oob_data |= 1; 3267 } 3268 if (conn->classic_oob_c_256 != NULL){ 3269 have_oob_data |= 2; 3270 } 3271 // for up to Level 3, either P-192 as well as P-256 will do 3272 // 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 3273 // if remote does not SC, we should not receive P-256 data either 3274 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3275 security_possible = true; 3276 } 3277 // for Level 4, P-256 is needed 3278 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3279 security_possible = true; 3280 } 3281 #endif 3282 3283 if (security_possible == false){ 3284 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3285 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3286 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3287 return; 3288 } 3289 } else { 3290 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3291 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3292 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3293 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3294 log_info("Level 3+ required, but no input/output -> abort"); 3295 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3296 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3297 return; 3298 } 3299 #endif 3300 #endif 3301 } 3302 3303 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3304 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3305 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3306 } else { 3307 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3308 } 3309 #endif 3310 } 3311 3312 #endif 3313 3314 static void event_handler(uint8_t *packet, uint16_t size){ 3315 3316 uint16_t event_length = packet[1]; 3317 3318 // assert packet is complete 3319 if (size != (event_length + 2u)){ 3320 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3321 return; 3322 } 3323 3324 hci_con_handle_t handle; 3325 hci_connection_t * conn; 3326 int i; 3327 3328 #ifdef ENABLE_CLASSIC 3329 hci_link_type_t link_type; 3330 bd_addr_t addr; 3331 bd_addr_type_t addr_type; 3332 #endif 3333 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3334 hci_iso_stream_t * iso_stream; 3335 le_audio_big_t * big; 3336 le_audio_big_sync_t * big_sync; 3337 #endif 3338 3339 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3340 3341 switch (hci_event_packet_get_type(packet)) { 3342 3343 case HCI_EVENT_COMMAND_COMPLETE: 3344 handle_command_complete_event(packet, size); 3345 break; 3346 3347 case HCI_EVENT_COMMAND_STATUS: 3348 handle_command_status_event(packet, size); 3349 break; 3350 3351 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3352 if (size < 3) return; 3353 uint16_t num_handles = packet[2]; 3354 if (size != (3u + num_handles * 4u)) return; 3355 #ifdef ENABLE_CLASSIC 3356 bool notify_sco = false; 3357 #endif 3358 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3359 bool notify_iso = false; 3360 #endif 3361 uint16_t offset = 3; 3362 for (i=0; i<num_handles;i++){ 3363 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3364 offset += 2u; 3365 uint16_t num_packets = little_endian_read_16(packet, offset); 3366 offset += 2u; 3367 3368 conn = hci_connection_for_handle(handle); 3369 if (conn != NULL) { 3370 3371 if (conn->num_packets_sent >= num_packets) { 3372 conn->num_packets_sent -= num_packets; 3373 } else { 3374 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3375 conn->num_packets_sent = 0; 3376 } 3377 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3378 #ifdef ENABLE_CLASSIC 3379 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3380 notify_sco = true; 3381 } 3382 #endif 3383 } 3384 3385 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3386 hci_controller_dump_packets(); 3387 #endif 3388 3389 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3390 if (conn == NULL){ 3391 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3392 if (iso_stream != NULL){ 3393 if (iso_stream->num_packets_sent >= num_packets) { 3394 iso_stream->num_packets_sent -= num_packets; 3395 } else { 3396 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3397 iso_stream->num_packets_sent = 0; 3398 } 3399 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3400 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3401 if (big != NULL){ 3402 big->num_completed_timestamp_current_valid = true; 3403 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3404 } 3405 } 3406 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3407 num_packets, handle, iso_stream->num_packets_sent); 3408 notify_iso = true; 3409 } 3410 } 3411 #endif 3412 } 3413 3414 #ifdef ENABLE_CLASSIC 3415 if (notify_sco){ 3416 hci_notify_if_sco_can_send_now(); 3417 } 3418 #endif 3419 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3420 if (notify_iso){ 3421 hci_iso_notify_can_send_now(); 3422 } 3423 #endif 3424 break; 3425 } 3426 3427 #ifdef ENABLE_CLASSIC 3428 case HCI_EVENT_FLUSH_OCCURRED: 3429 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3430 handle = hci_event_flush_occurred_get_handle(packet); 3431 conn = hci_connection_for_handle(handle); 3432 if (conn) { 3433 log_info("Flush occurred, disconnect 0x%04x", handle); 3434 conn->state = SEND_DISCONNECT; 3435 } 3436 break; 3437 3438 case HCI_EVENT_INQUIRY_COMPLETE: 3439 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3440 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3441 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3442 hci_emit_event(event, sizeof(event), 1); 3443 } 3444 break; 3445 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3446 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3447 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3448 } 3449 break; 3450 case HCI_EVENT_CONNECTION_REQUEST: 3451 reverse_bd_addr(&packet[2], addr); 3452 link_type = (hci_link_type_t) packet[11]; 3453 3454 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3455 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3456 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3457 bd_addr_copy(hci_stack->decline_addr, addr); 3458 break; 3459 } 3460 3461 if (hci_stack->gap_classic_accept_callback != NULL){ 3462 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3463 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3464 bd_addr_copy(hci_stack->decline_addr, addr); 3465 break; 3466 } 3467 } 3468 3469 // TODO: eval COD 8-10 3470 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3471 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3472 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3473 if (!conn) { 3474 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3475 } 3476 if (!conn) { 3477 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3478 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3479 bd_addr_copy(hci_stack->decline_addr, addr); 3480 hci_run(); 3481 // avoid event to higher layer 3482 return; 3483 } 3484 conn->role = HCI_ROLE_SLAVE; 3485 conn->state = RECEIVED_CONNECTION_REQUEST; 3486 // store info about eSCO 3487 if (link_type == HCI_LINK_TYPE_ESCO){ 3488 conn->remote_supported_features[0] |= 1; 3489 } 3490 hci_run(); 3491 break; 3492 3493 case HCI_EVENT_CONNECTION_COMPLETE: 3494 // Connection management 3495 reverse_bd_addr(&packet[5], addr); 3496 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3497 addr_type = BD_ADDR_TYPE_ACL; 3498 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3499 if (conn) { 3500 switch (conn->state){ 3501 // expected states 3502 case ACCEPTED_CONNECTION_REQUEST: 3503 case SENT_CREATE_CONNECTION: 3504 break; 3505 // unexpected state -> ignore 3506 default: 3507 // don't forward event to app 3508 return; 3509 } 3510 if (!packet[2]){ 3511 conn->state = OPEN; 3512 conn->con_handle = little_endian_read_16(packet, 3); 3513 3514 // trigger write supervision timeout if we're master 3515 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3516 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3517 } 3518 3519 // trigger write automatic flush timeout 3520 if (hci_stack->automatic_flush_timeout != 0){ 3521 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3522 } 3523 3524 // restart timer 3525 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3526 btstack_run_loop_add_timer(&conn->timeout); 3527 3528 // trigger remote features for dedicated bonding 3529 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3530 hci_trigger_remote_features_for_connection(conn); 3531 } 3532 3533 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3534 3535 hci_emit_nr_connections_changed(); 3536 } else { 3537 // connection failed 3538 hci_handle_connection_failed(conn, packet[2]); 3539 } 3540 } 3541 break; 3542 3543 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3544 reverse_bd_addr(&packet[5], addr); 3545 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3546 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3547 btstack_assert(conn != NULL); 3548 3549 if (packet[2] != ERROR_CODE_SUCCESS){ 3550 // connection failed, remove entry 3551 hci_handle_connection_failed(conn, packet[2]); 3552 break; 3553 } 3554 3555 conn->state = OPEN; 3556 conn->con_handle = little_endian_read_16(packet, 3); 3557 3558 #ifdef ENABLE_SCO_OVER_HCI 3559 // update SCO 3560 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3561 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3562 } 3563 // trigger can send now 3564 if (hci_have_usb_transport()){ 3565 hci_stack->sco_can_send_now = true; 3566 } 3567 #endif 3568 #ifdef HAVE_SCO_TRANSPORT 3569 // configure sco transport 3570 if (hci_stack->sco_transport != NULL){ 3571 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3572 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3573 } 3574 #endif 3575 break; 3576 3577 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3578 handle = little_endian_read_16(packet, 3); 3579 conn = hci_connection_for_handle(handle); 3580 if (!conn) break; 3581 if (!packet[2]){ 3582 const uint8_t * features = &packet[5]; 3583 hci_handle_remote_features_page_0(conn, features); 3584 3585 // read extended features if possible 3586 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3587 && ((conn->remote_supported_features[0] & 2) != 0)) { 3588 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3589 break; 3590 } 3591 } 3592 hci_handle_remote_features_received(conn); 3593 break; 3594 3595 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3596 handle = little_endian_read_16(packet, 3); 3597 conn = hci_connection_for_handle(handle); 3598 if (!conn) break; 3599 // status = ok, page = 1 3600 if (!packet[2]) { 3601 uint8_t page_number = packet[5]; 3602 uint8_t maximum_page_number = packet[6]; 3603 const uint8_t * features = &packet[7]; 3604 bool done = false; 3605 switch (page_number){ 3606 case 1: 3607 hci_handle_remote_features_page_1(conn, features); 3608 if (maximum_page_number >= 2){ 3609 // get Secure Connections (Controller) from Page 2 if available 3610 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3611 } else { 3612 // otherwise, assume SC (Controller) == SC (Host) 3613 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3614 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3615 } 3616 done = true; 3617 } 3618 break; 3619 case 2: 3620 hci_handle_remote_features_page_2(conn, features); 3621 done = true; 3622 break; 3623 default: 3624 break; 3625 } 3626 if (!done) break; 3627 } 3628 hci_handle_remote_features_received(conn); 3629 break; 3630 3631 case HCI_EVENT_LINK_KEY_REQUEST: 3632 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3633 hci_event_link_key_request_get_bd_addr(packet, addr); 3634 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3635 if (!conn) break; 3636 3637 // lookup link key in db if not cached 3638 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3639 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3640 } 3641 3642 // response sent by hci_run() 3643 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3644 #endif 3645 break; 3646 3647 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3648 hci_event_link_key_request_get_bd_addr(packet, addr); 3649 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3650 if (!conn) break; 3651 3652 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3653 3654 // CVE-2020-26555: ignore NULL link key 3655 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3656 if (btstack_is_null(&packet[8], 16)) break; 3657 3658 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3659 // Change Connection Encryption keeps link key type 3660 if (link_key_type != CHANGED_COMBINATION_KEY){ 3661 conn->link_key_type = link_key_type; 3662 } 3663 3664 // cache link key. link keys stored in little-endian format for legacy reasons 3665 memcpy(&conn->link_key, &packet[8], 16); 3666 3667 // only store link key: 3668 // - if bondable enabled 3669 if (hci_stack->bondable == false) break; 3670 // - if security level sufficient 3671 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3672 // - for SSP, also check if remote side requested bonding as well 3673 if (conn->link_key_type != COMBINATION_KEY){ 3674 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3675 if (!remote_bonding){ 3676 break; 3677 } 3678 } 3679 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3680 break; 3681 } 3682 3683 case HCI_EVENT_PIN_CODE_REQUEST: 3684 hci_event_pin_code_request_get_bd_addr(packet, addr); 3685 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3686 if (!conn) break; 3687 3688 hci_pairing_started(conn, false); 3689 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3690 if (!hci_stack->bondable ){ 3691 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3692 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3693 hci_run(); 3694 return; 3695 } 3696 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3697 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3698 log_info("Level 4 required, but SC not supported -> abort"); 3699 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3700 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3701 hci_run(); 3702 return; 3703 } 3704 break; 3705 3706 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3707 hci_event_io_capability_response_get_bd_addr(packet, addr); 3708 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3709 if (!conn) break; 3710 3711 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3712 hci_pairing_started(conn, true); 3713 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3714 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3715 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3716 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3717 #endif 3718 break; 3719 3720 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3721 hci_event_io_capability_response_get_bd_addr(packet, addr); 3722 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3723 if (!conn) break; 3724 3725 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3726 hci_connection_timestamp(conn); 3727 hci_pairing_started(conn, true); 3728 break; 3729 3730 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3731 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3732 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3733 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3734 if (!conn) break; 3735 3736 hci_connection_timestamp(conn); 3737 3738 hci_pairing_started(conn, true); 3739 3740 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3741 break; 3742 #endif 3743 3744 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3745 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3746 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3747 if (!conn) break; 3748 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3749 if (hci_stack->ssp_auto_accept){ 3750 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3751 }; 3752 } else { 3753 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3754 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3755 // don't forward event to app 3756 hci_run(); 3757 return; 3758 } 3759 break; 3760 3761 case HCI_EVENT_USER_PASSKEY_REQUEST: 3762 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3763 if (hci_stack->ssp_auto_accept){ 3764 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3765 }; 3766 break; 3767 3768 case HCI_EVENT_MODE_CHANGE: 3769 handle = hci_event_mode_change_get_handle(packet); 3770 conn = hci_connection_for_handle(handle); 3771 if (!conn) break; 3772 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3773 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3774 break; 3775 #endif 3776 3777 case HCI_EVENT_ENCRYPTION_CHANGE: 3778 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3779 handle = hci_event_encryption_change_get_connection_handle(packet); 3780 conn = hci_connection_for_handle(handle); 3781 if (!conn) break; 3782 if (hci_event_encryption_change_get_status(packet) == 0u) { 3783 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3784 if (encryption_enabled){ 3785 if (hci_is_le_connection(conn)){ 3786 // For LE, we accept connection as encrypted 3787 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3788 } 3789 #ifdef ENABLE_CLASSIC 3790 else { 3791 3792 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3793 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3794 bool connected_uses_aes_ccm = encryption_enabled == 2; 3795 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3796 log_info("SC during pairing, but only E0 now -> abort"); 3797 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3798 break; 3799 } 3800 3801 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3802 if (connected_uses_aes_ccm){ 3803 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3804 } 3805 3806 #ifdef ENABLE_TESTING_SUPPORT 3807 // work around for issue with PTS dongle 3808 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3809 #endif 3810 // validate encryption key size 3811 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3812 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3813 // already got encryption key size 3814 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3815 } else { 3816 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3817 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3818 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3819 } else { 3820 // if not, pretend everything is perfect 3821 hci_handle_read_encryption_key_size_complete(conn, 16); 3822 } 3823 } 3824 } 3825 #endif 3826 } else { 3827 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3828 } 3829 } else { 3830 uint8_t status = hci_event_encryption_change_get_status(packet); 3831 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3832 conn->bonding_flags &= ~BONDING_DEDICATED; 3833 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3834 conn->bonding_status = status; 3835 } 3836 } 3837 3838 break; 3839 3840 #ifdef ENABLE_CLASSIC 3841 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3842 handle = hci_event_authentication_complete_get_connection_handle(packet); 3843 conn = hci_connection_for_handle(handle); 3844 if (!conn) break; 3845 3846 // clear authentication active flag 3847 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3848 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3849 3850 // authenticated only if auth status == 0 3851 if (hci_event_authentication_complete_get_status(packet) == 0){ 3852 // authenticated 3853 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3854 3855 // If not already encrypted, start encryption 3856 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3857 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3858 break; 3859 } 3860 } 3861 3862 // emit updated security level 3863 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3864 break; 3865 3866 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3867 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3868 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3869 if (!conn) break; 3870 3871 // treat successfully paired connection as authenticated 3872 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3873 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3874 } 3875 3876 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3877 break; 3878 #endif 3879 3880 // HCI_EVENT_DISCONNECTION_COMPLETE 3881 // has been split, to first notify stack before shutting connection down 3882 // see end of function, too. 3883 case HCI_EVENT_DISCONNECTION_COMPLETE: 3884 if (packet[2]) break; // status != 0 3885 handle = little_endian_read_16(packet, 3); 3886 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3887 if (hci_stack->acl_fragmentation_total_size > 0u) { 3888 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3889 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3890 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3891 hci_stack->acl_fragmentation_total_size = 0; 3892 hci_stack->acl_fragmentation_pos = 0; 3893 if (release_buffer){ 3894 hci_release_packet_buffer(); 3895 } 3896 } 3897 } 3898 3899 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3900 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3901 if (hci_stack->iso_fragmentation_total_size > 0u) { 3902 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3903 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3904 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3905 hci_stack->iso_fragmentation_total_size = 0; 3906 hci_stack->iso_fragmentation_pos = 0; 3907 if (release_buffer){ 3908 hci_release_packet_buffer(); 3909 } 3910 } 3911 } 3912 3913 // finalize iso stream for CIS handle 3914 iso_stream = hci_iso_stream_for_con_handle(handle); 3915 if (iso_stream != NULL){ 3916 hci_iso_stream_finalize(iso_stream); 3917 break; 3918 } 3919 3920 // finalize iso stream(s) for ACL handle 3921 btstack_linked_list_iterator_t it; 3922 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3923 while (btstack_linked_list_iterator_has_next(&it)){ 3924 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3925 if (iso_stream->acl_handle == handle ) { 3926 hci_iso_stream_finalize(iso_stream); 3927 } 3928 } 3929 #endif 3930 3931 conn = hci_connection_for_handle(handle); 3932 if (!conn) break; 3933 #ifdef ENABLE_CLASSIC 3934 // pairing failed if it was ongoing 3935 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3936 #endif 3937 3938 // emit dedicatd bonding event 3939 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3940 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3941 } 3942 3943 // mark connection for shutdown, stop timers, reset state 3944 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3945 hci_connection_stop_timer(conn); 3946 hci_connection_init(conn); 3947 3948 #ifdef ENABLE_BLE 3949 #ifdef ENABLE_LE_PERIPHERAL 3950 // re-enable advertisements for le connections if active 3951 if (hci_is_le_connection(conn)){ 3952 hci_update_advertisements_enabled_for_current_roles(); 3953 } 3954 #endif 3955 #endif 3956 break; 3957 3958 case HCI_EVENT_HARDWARE_ERROR: 3959 log_error("Hardware Error: 0x%02x", packet[2]); 3960 if (hci_stack->hardware_error_callback){ 3961 (*hci_stack->hardware_error_callback)(packet[2]); 3962 } else { 3963 // if no special requests, just reboot stack 3964 hci_power_control_off(); 3965 hci_power_control_on(); 3966 } 3967 break; 3968 3969 #ifdef ENABLE_CLASSIC 3970 case HCI_EVENT_ROLE_CHANGE: 3971 if (packet[2]) break; // status != 0 3972 reverse_bd_addr(&packet[3], addr); 3973 addr_type = BD_ADDR_TYPE_ACL; 3974 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3975 if (!conn) break; 3976 conn->role = packet[9]; 3977 break; 3978 #endif 3979 3980 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3981 // release packet buffer only for asynchronous transport and if there are not further fragments 3982 if (hci_transport_synchronous()) { 3983 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3984 return; // instead of break: to avoid re-entering hci_run() 3985 } 3986 hci_stack->acl_fragmentation_tx_active = 0; 3987 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3988 hci_stack->iso_fragmentation_tx_active = 0; 3989 if (hci_stack->iso_fragmentation_total_size) break; 3990 #endif 3991 if (hci_stack->acl_fragmentation_total_size) break; 3992 hci_release_packet_buffer(); 3993 3994 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3995 hci_iso_notify_can_send_now(); 3996 #endif 3997 // L2CAP receives this event via the hci_emit_event below 3998 3999 #ifdef ENABLE_CLASSIC 4000 // For SCO, we do the can_send_now_check here 4001 hci_notify_if_sco_can_send_now(); 4002 #endif 4003 break; 4004 4005 #ifdef ENABLE_CLASSIC 4006 case HCI_EVENT_SCO_CAN_SEND_NOW: 4007 // For SCO, we do the can_send_now_check here 4008 hci_stack->sco_can_send_now = true; 4009 hci_notify_if_sco_can_send_now(); 4010 return; 4011 4012 // explode inquriy results for easier consumption 4013 case HCI_EVENT_INQUIRY_RESULT: 4014 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4015 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4016 gap_inquiry_explode(packet, size); 4017 break; 4018 #endif 4019 4020 #ifdef ENABLE_BLE 4021 case HCI_EVENT_LE_META: 4022 switch (packet[2]){ 4023 #ifdef ENABLE_LE_CENTRAL 4024 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4025 if (!hci_stack->le_scanning_enabled) break; 4026 le_handle_advertisement_report(packet, size); 4027 break; 4028 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4029 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4030 if (!hci_stack->le_scanning_enabled) break; 4031 le_handle_extended_advertisement_report(packet, size); 4032 break; 4033 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4034 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4035 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4036 break; 4037 #endif 4038 #endif 4039 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4040 event_handle_le_connection_complete(packet); 4041 break; 4042 4043 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4044 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4045 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4046 conn = hci_connection_for_handle(handle); 4047 if (!conn) break; 4048 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4049 break; 4050 4051 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4052 // connection 4053 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4054 conn = hci_connection_for_handle(handle); 4055 if (conn) { 4056 // read arguments 4057 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4058 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4059 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4060 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4061 4062 // validate against current connection parameter range 4063 le_connection_parameter_range_t existing_range; 4064 gap_get_connection_parameter_range(&existing_range); 4065 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4066 if (update_parameter){ 4067 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4068 conn->le_conn_interval_min = le_conn_interval_min; 4069 conn->le_conn_interval_max = le_conn_interval_max; 4070 conn->le_conn_latency = le_conn_latency; 4071 conn->le_supervision_timeout = le_supervision_timeout; 4072 } else { 4073 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4074 } 4075 } 4076 break; 4077 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4078 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4079 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4080 conn = hci_connection_for_handle(handle); 4081 if (conn) { 4082 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4083 } 4084 break; 4085 #endif 4086 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4087 case HCI_SUBEVENT_LE_CIS_REQUEST: 4088 // incoming CIS request, allocate iso stream object and cache metadata 4089 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4090 hci_subevent_le_cis_request_get_cig_id(packet), 4091 hci_subevent_le_cis_request_get_cis_id(packet)); 4092 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4093 if (iso_stream != NULL){ 4094 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4095 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4096 } 4097 break; 4098 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4099 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4100 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4101 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4102 iso_stream = hci_iso_stream_for_con_handle(handle); 4103 btstack_assert(iso_stream != NULL); 4104 // track SDU 4105 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4106 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4107 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4108 // CIS Accept by Peripheral 4109 if (status == ERROR_CODE_SUCCESS){ 4110 if (iso_stream->max_sdu_p_to_c > 0){ 4111 // we're peripheral and we will send data 4112 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4113 } else { 4114 // we're peripheral and we will only receive data 4115 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4116 } 4117 } else { 4118 hci_cis_handle_created(iso_stream, status); 4119 } 4120 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4121 } else { 4122 // CIG Setup by Central 4123 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4124 btstack_assert(cig != NULL); 4125 // update iso stream state 4126 if (status == ERROR_CODE_SUCCESS){ 4127 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4128 } else { 4129 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4130 } 4131 // update cig state 4132 uint8_t i; 4133 for (i=0;i<cig->num_cis;i++){ 4134 if (cig->cis_con_handles[i] == handle){ 4135 cig->cis_setup_active[i] = false; 4136 if (status == ERROR_CODE_SUCCESS){ 4137 cig->cis_established[i] = true; 4138 } else { 4139 hci_cis_handle_created(iso_stream, status); 4140 } 4141 } 4142 } 4143 4144 // trigger iso path setup if complete 4145 bool cis_setup_active = false; 4146 for (i=0;i<cig->num_cis;i++){ 4147 cis_setup_active |= cig->cis_setup_active[i]; 4148 } 4149 if (cis_setup_active == false){ 4150 cig->state_vars.next_cis = 0; 4151 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4152 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4153 } 4154 } 4155 } 4156 break; 4157 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4158 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4159 big = hci_big_for_handle(packet[4]); 4160 if (big != NULL){ 4161 uint8_t status = packet[3]; 4162 if (status == ERROR_CODE_SUCCESS){ 4163 // store bis_con_handles and trigger iso path setup 4164 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4165 uint8_t i; 4166 for (i=0;i<num_bis;i++){ 4167 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4168 big->bis_con_handles[i] = bis_handle; 4169 // assign bis handle 4170 btstack_linked_list_iterator_t it; 4171 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4172 while (btstack_linked_list_iterator_has_next(&it)){ 4173 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4174 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4175 (iso_stream->group_id == big->big_handle)){ 4176 iso_stream->cis_handle = bis_handle; 4177 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4178 break; 4179 } 4180 } 4181 } 4182 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4183 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4184 big->state_vars.next_bis = 0; 4185 } 4186 } else { 4187 // create BIG failed or has been stopped by us 4188 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4189 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4190 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4191 hci_emit_big_created(big, status); 4192 } else { 4193 hci_emit_big_terminated(big); 4194 } 4195 } 4196 } 4197 break; 4198 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4199 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4200 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4201 if (big != NULL){ 4202 // finalize associated ISO streams 4203 btstack_linked_list_iterator_t it; 4204 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4205 while (btstack_linked_list_iterator_has_next(&it)){ 4206 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4207 if (iso_stream->group_id == big->big_handle){ 4208 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4209 btstack_linked_list_iterator_remove(&it); 4210 btstack_memory_hci_iso_stream_free(iso_stream); 4211 } 4212 } 4213 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4214 switch (big->state){ 4215 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4216 hci_emit_big_created(big, big->state_vars.status); 4217 break; 4218 default: 4219 hci_emit_big_terminated(big); 4220 break; 4221 } 4222 } 4223 break; 4224 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4225 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4226 big_sync = hci_big_sync_for_handle(packet[4]); 4227 if (big_sync != NULL){ 4228 uint8_t status = packet[3]; 4229 uint8_t big_handle = packet[4]; 4230 if (status == ERROR_CODE_SUCCESS){ 4231 // store bis_con_handles and trigger iso path setup 4232 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4233 uint8_t i; 4234 for (i=0;i<num_bis;i++){ 4235 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4236 } 4237 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4238 // trigger iso path setup 4239 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4240 big_sync->state_vars.next_bis = 0; 4241 } 4242 } else { 4243 // create BIG Sync failed or has been stopped by us 4244 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4245 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4246 hci_emit_big_sync_created(big_sync, status); 4247 } else { 4248 hci_emit_big_sync_stopped(big_handle); 4249 } 4250 } 4251 } 4252 break; 4253 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4254 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4255 big_sync = hci_big_sync_for_handle(packet[4]); 4256 if (big_sync != NULL){ 4257 uint8_t big_handle = packet[4]; 4258 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4259 hci_emit_big_sync_stopped(big_handle); 4260 } 4261 break; 4262 #endif 4263 default: 4264 break; 4265 } 4266 break; 4267 #endif 4268 case HCI_EVENT_VENDOR_SPECIFIC: 4269 // Vendor specific commands often create vendor specific event instead of num completed packets 4270 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4271 switch (hci_stack->manufacturer){ 4272 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4273 hci_stack->num_cmd_packets = 1; 4274 break; 4275 default: 4276 break; 4277 } 4278 break; 4279 default: 4280 break; 4281 } 4282 4283 handle_event_for_current_stack_state(packet, size); 4284 4285 // notify upper stack 4286 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4287 4288 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4289 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4290 handle = little_endian_read_16(packet, 3); 4291 hci_connection_t * aConn = hci_connection_for_handle(handle); 4292 // discard connection if app did not trigger a reconnect in the event handler 4293 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4294 hci_shutdown_connection(aConn); 4295 } 4296 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4297 hci_controller_dump_packets(); 4298 #endif 4299 } 4300 4301 // execute main loop 4302 hci_run(); 4303 } 4304 4305 #ifdef ENABLE_CLASSIC 4306 4307 #ifdef ENABLE_SCO_OVER_HCI 4308 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4309 static void sco_schedule_tx(hci_connection_t * conn); 4310 4311 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4312 log_debug("SCO TX Timeout"); 4313 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4314 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4315 if (!conn) return; 4316 4317 // trigger send 4318 conn->sco_tx_ready = 1; 4319 // extra packet if CVSD but SCO buffer is too short 4320 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4321 conn->sco_tx_ready++; 4322 } 4323 hci_notify_if_sco_can_send_now(); 4324 } 4325 4326 4327 #define SCO_TX_AFTER_RX_MS (6) 4328 4329 static void sco_schedule_tx(hci_connection_t * conn){ 4330 4331 uint32_t now = btstack_run_loop_get_time_ms(); 4332 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4333 int time_delta_ms = sco_tx_ms - now; 4334 4335 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4336 4337 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4338 btstack_run_loop_remove_timer(timer); 4339 btstack_run_loop_set_timer(timer, time_delta_ms); 4340 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4341 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4342 btstack_run_loop_add_timer(timer); 4343 } 4344 #endif 4345 4346 static void sco_handler(uint8_t * packet, uint16_t size){ 4347 // lookup connection struct 4348 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4349 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4350 if (!conn) return; 4351 4352 #ifdef ENABLE_SCO_OVER_HCI 4353 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4354 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4355 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4356 packet[2] = 0x3c; 4357 memmove(&packet[3], &packet[23], 63); 4358 size = 63; 4359 } 4360 } 4361 4362 if (hci_have_usb_transport()){ 4363 // Nothing to do 4364 } else { 4365 // 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); 4366 if (hci_stack->synchronous_flow_control_enabled == 0){ 4367 uint32_t now = btstack_run_loop_get_time_ms(); 4368 4369 if (!conn->sco_rx_valid){ 4370 // ignore first 10 packets 4371 conn->sco_rx_count++; 4372 // log_debug("sco rx count %u", conn->sco_rx_count); 4373 if (conn->sco_rx_count == 10) { 4374 // use first timestamp as is and pretent it just started 4375 conn->sco_rx_ms = now; 4376 conn->sco_rx_valid = 1; 4377 conn->sco_rx_count = 0; 4378 sco_schedule_tx(conn); 4379 } 4380 } else { 4381 // track expected arrival timme 4382 conn->sco_rx_count++; 4383 conn->sco_rx_ms += 7; 4384 int delta = (int32_t) (now - conn->sco_rx_ms); 4385 if (delta > 0){ 4386 conn->sco_rx_ms++; 4387 } 4388 // log_debug("sco rx %u", conn->sco_rx_ms); 4389 sco_schedule_tx(conn); 4390 } 4391 } 4392 } 4393 #endif 4394 4395 // deliver to app 4396 if (hci_stack->sco_packet_handler) { 4397 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4398 } 4399 4400 #ifdef HAVE_SCO_TRANSPORT 4401 // We can send one packet for each received packet 4402 conn->sco_tx_ready++; 4403 hci_notify_if_sco_can_send_now(); 4404 #endif 4405 4406 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4407 conn->num_packets_completed++; 4408 hci_stack->host_completed_packets = 1; 4409 hci_run(); 4410 #endif 4411 } 4412 #endif 4413 4414 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4415 hci_dump_packet(packet_type, 1, packet, size); 4416 switch (packet_type) { 4417 case HCI_EVENT_PACKET: 4418 event_handler(packet, size); 4419 break; 4420 case HCI_ACL_DATA_PACKET: 4421 acl_handler(packet, size); 4422 break; 4423 #ifdef ENABLE_CLASSIC 4424 case HCI_SCO_DATA_PACKET: 4425 sco_handler(packet, size); 4426 break; 4427 #endif 4428 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4429 case HCI_ISO_DATA_PACKET: 4430 hci_iso_packet_handler(packet, size); 4431 break; 4432 #endif 4433 default: 4434 break; 4435 } 4436 } 4437 4438 /** 4439 * @brief Add event packet handler. 4440 */ 4441 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4442 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4443 } 4444 4445 /** 4446 * @brief Remove event packet handler. 4447 */ 4448 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4449 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4450 } 4451 4452 /** Register HCI packet handlers */ 4453 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4454 hci_stack->acl_packet_handler = handler; 4455 } 4456 4457 #ifdef ENABLE_CLASSIC 4458 /** 4459 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4460 */ 4461 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4462 hci_stack->sco_packet_handler = handler; 4463 } 4464 #endif 4465 4466 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4467 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4468 hci_stack->iso_packet_handler = handler; 4469 } 4470 #endif 4471 4472 static void hci_state_reset(void){ 4473 // no connections yet 4474 hci_stack->connections = NULL; 4475 4476 // keep discoverable/connectable as this has been requested by the client(s) 4477 // hci_stack->discoverable = 0; 4478 // hci_stack->connectable = 0; 4479 // hci_stack->bondable = 1; 4480 // hci_stack->own_addr_type = 0; 4481 4482 // buffer is free 4483 hci_stack->hci_packet_buffer_reserved = false; 4484 4485 // no pending cmds 4486 hci_stack->decline_reason = 0; 4487 4488 hci_stack->secure_connections_active = false; 4489 4490 #ifdef ENABLE_CLASSIC 4491 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4492 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4493 4494 hci_stack->gap_tasks_classic = 4495 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4496 GAP_TASK_SET_CLASS_OF_DEVICE | 4497 GAP_TASK_SET_LOCAL_NAME | 4498 GAP_TASK_SET_EIR_DATA | 4499 GAP_TASK_WRITE_SCAN_ENABLE | 4500 GAP_TASK_WRITE_PAGE_TIMEOUT; 4501 #endif 4502 4503 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4504 hci_stack->classic_read_local_oob_data = false; 4505 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4506 #endif 4507 4508 // LE 4509 #ifdef ENABLE_BLE 4510 memset(hci_stack->le_random_address, 0, 6); 4511 hci_stack->le_random_address_set = 0; 4512 #endif 4513 #ifdef ENABLE_LE_CENTRAL 4514 hci_stack->le_scanning_active = false; 4515 hci_stack->le_scanning_param_update = true; 4516 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4517 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4518 hci_stack->le_whitelist_capacity = 0; 4519 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4520 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4521 #endif 4522 #endif 4523 #ifdef ENABLE_LE_PERIPHERAL 4524 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4525 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4526 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4527 } 4528 if (hci_stack->le_advertisements_data != NULL){ 4529 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4530 } 4531 #endif 4532 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4533 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4534 #endif 4535 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4536 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4537 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4538 #endif 4539 } 4540 4541 #ifdef ENABLE_CLASSIC 4542 /** 4543 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4544 */ 4545 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4546 // store and open remote device db 4547 hci_stack->link_key_db = link_key_db; 4548 if (hci_stack->link_key_db) { 4549 hci_stack->link_key_db->open(); 4550 } 4551 } 4552 #endif 4553 4554 void hci_init(const hci_transport_t *transport, const void *config){ 4555 4556 #ifdef HAVE_MALLOC 4557 if (!hci_stack) { 4558 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4559 } 4560 #else 4561 hci_stack = &hci_stack_static; 4562 #endif 4563 memset(hci_stack, 0, sizeof(hci_stack_t)); 4564 4565 // reference to use transport layer implementation 4566 hci_stack->hci_transport = transport; 4567 4568 // reference to used config 4569 hci_stack->config = config; 4570 4571 // setup pointer for outgoing packet buffer 4572 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4573 4574 // max acl payload size defined in config.h 4575 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4576 4577 // register packet handlers with transport 4578 transport->register_packet_handler(&packet_handler); 4579 4580 hci_stack->state = HCI_STATE_OFF; 4581 4582 // class of device 4583 hci_stack->class_of_device = 0x007a020c; // Smartphone 4584 4585 // bondable by default 4586 hci_stack->bondable = 1; 4587 4588 #ifdef ENABLE_CLASSIC 4589 // classic name 4590 hci_stack->local_name = default_classic_name; 4591 4592 // Master slave policy 4593 hci_stack->master_slave_policy = 1; 4594 4595 // Allow Role Switch 4596 hci_stack->allow_role_switch = 1; 4597 4598 // Default / minimum security level = 2 4599 hci_stack->gap_security_level = LEVEL_2; 4600 4601 // Default Security Mode 4 4602 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4603 4604 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4605 hci_stack->gap_required_encyrption_key_size = 7; 4606 4607 // Link Supervision Timeout 4608 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4609 4610 #endif 4611 4612 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4613 hci_stack->ssp_enable = 1; 4614 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4615 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4616 hci_stack->ssp_auto_accept = 1; 4617 4618 // Secure Connections: enable (requires support from Controller) 4619 hci_stack->secure_connections_enable = true; 4620 4621 // voice setting - signed 16 bit pcm data with CVSD over the air 4622 hci_stack->sco_voice_setting = 0x60; 4623 4624 #ifdef ENABLE_LE_CENTRAL 4625 // connection parameter to use for outgoing connections 4626 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4627 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4628 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4629 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4630 hci_stack->le_connection_latency = 4; // 4 4631 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4632 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4633 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4634 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4635 4636 // default LE Scanning 4637 hci_stack->le_scan_type = 0x01; // active 4638 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4639 hci_stack->le_scan_window = 0x30; // 30 ms 4640 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4641 #endif 4642 4643 #ifdef ENABLE_LE_PERIPHERAL 4644 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4645 4646 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4647 hci_stack->le_advertisements_interval_min = 0x0800; 4648 hci_stack->le_advertisements_interval_max = 0x0800; 4649 hci_stack->le_advertisements_type = 0; 4650 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4651 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4652 hci_stack->le_advertisements_channel_map = 0x07; 4653 hci_stack->le_advertisements_filter_policy = 0; 4654 #endif 4655 4656 // connection parameter range used to answer connection parameter update requests in l2cap 4657 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4658 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4659 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4660 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4661 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4662 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4663 4664 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4665 hci_stack->iso_packets_to_queue = 1; 4666 #endif 4667 4668 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4669 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4670 #endif 4671 4672 hci_state_reset(); 4673 } 4674 4675 void hci_deinit(void){ 4676 btstack_run_loop_remove_timer(&hci_stack->timeout); 4677 #ifdef HAVE_MALLOC 4678 if (hci_stack) { 4679 free(hci_stack); 4680 } 4681 #endif 4682 hci_stack = NULL; 4683 4684 #ifdef ENABLE_CLASSIC 4685 disable_l2cap_timeouts = 0; 4686 #endif 4687 } 4688 4689 /** 4690 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4691 */ 4692 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4693 hci_stack->chipset = chipset_driver; 4694 4695 // reset chipset driver - init is also called on power_up 4696 if (hci_stack->chipset && hci_stack->chipset->init){ 4697 hci_stack->chipset->init(hci_stack->config); 4698 } 4699 } 4700 4701 void hci_enable_custom_pre_init(void){ 4702 hci_stack->chipset_pre_init = true; 4703 } 4704 4705 /** 4706 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4707 */ 4708 void hci_set_control(const btstack_control_t *hardware_control){ 4709 // references to used control implementation 4710 hci_stack->control = hardware_control; 4711 // init with transport config 4712 hardware_control->init(hci_stack->config); 4713 } 4714 4715 static void hci_discard_connections(void){ 4716 btstack_linked_list_iterator_t it; 4717 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4718 while (btstack_linked_list_iterator_has_next(&it)){ 4719 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4720 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4721 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4722 hci_shutdown_connection(connection); 4723 } 4724 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4725 while (hci_stack->iso_streams != NULL){ 4726 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4727 } 4728 #endif 4729 } 4730 4731 void hci_close(void){ 4732 4733 #ifdef ENABLE_CLASSIC 4734 // close remote device db 4735 if (hci_stack->link_key_db) { 4736 hci_stack->link_key_db->close(); 4737 } 4738 #endif 4739 4740 hci_discard_connections(); 4741 4742 hci_power_control(HCI_POWER_OFF); 4743 4744 #ifdef HAVE_MALLOC 4745 free(hci_stack); 4746 #endif 4747 hci_stack = NULL; 4748 } 4749 4750 #ifdef HAVE_SCO_TRANSPORT 4751 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4752 hci_stack->sco_transport = sco_transport; 4753 sco_transport->register_packet_handler(&packet_handler); 4754 } 4755 #endif 4756 4757 #ifdef ENABLE_CLASSIC 4758 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4759 // validate ranage and set 4760 if (encryption_key_size < 7) return; 4761 if (encryption_key_size > 16) return; 4762 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4763 } 4764 4765 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4766 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4767 hci_stack->gap_security_mode = security_mode; 4768 return ERROR_CODE_SUCCESS; 4769 } else { 4770 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4771 } 4772 } 4773 4774 gap_security_mode_t gap_get_security_mode(void){ 4775 return hci_stack->gap_security_mode; 4776 } 4777 4778 void gap_set_security_level(gap_security_level_t security_level){ 4779 hci_stack->gap_security_level = security_level; 4780 } 4781 4782 gap_security_level_t gap_get_security_level(void){ 4783 if (hci_stack->gap_secure_connections_only_mode){ 4784 return LEVEL_4; 4785 } 4786 return hci_stack->gap_security_level; 4787 } 4788 4789 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4790 hci_stack->gap_minimal_service_security_level = security_level; 4791 } 4792 4793 void gap_set_secure_connections_only_mode(bool enable){ 4794 hci_stack->gap_secure_connections_only_mode = enable; 4795 } 4796 4797 bool gap_get_secure_connections_only_mode(void){ 4798 return hci_stack->gap_secure_connections_only_mode; 4799 } 4800 #endif 4801 4802 #ifdef ENABLE_CLASSIC 4803 void gap_set_class_of_device(uint32_t class_of_device){ 4804 hci_stack->class_of_device = class_of_device; 4805 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4806 hci_run(); 4807 } 4808 4809 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4810 hci_stack->default_link_policy_settings = default_link_policy_settings; 4811 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4812 hci_run(); 4813 } 4814 4815 void gap_set_allow_role_switch(bool allow_role_switch){ 4816 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4817 } 4818 4819 uint8_t hci_get_allow_role_switch(void){ 4820 return hci_stack->allow_role_switch; 4821 } 4822 4823 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4824 hci_stack->link_supervision_timeout = link_supervision_timeout; 4825 } 4826 4827 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4828 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4829 } 4830 4831 uint16_t hci_automatic_flush_timeout(void){ 4832 return hci_stack->automatic_flush_timeout; 4833 } 4834 4835 void hci_disable_l2cap_timeout_check(void){ 4836 disable_l2cap_timeouts = 1; 4837 } 4838 #endif 4839 4840 #ifndef HAVE_HOST_CONTROLLER_API 4841 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4842 void hci_set_bd_addr(bd_addr_t addr){ 4843 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4844 hci_stack->custom_bd_addr_set = 1; 4845 } 4846 #endif 4847 4848 // State-Module-Driver overview 4849 // state module low-level 4850 // HCI_STATE_OFF off close 4851 // HCI_STATE_INITIALIZING, on open 4852 // HCI_STATE_WORKING, on open 4853 // HCI_STATE_HALTING, on open 4854 // HCI_STATE_SLEEPING, off/sleep close 4855 // HCI_STATE_FALLING_ASLEEP on open 4856 4857 static int hci_power_control_on(void){ 4858 4859 // power on 4860 int err = 0; 4861 if (hci_stack->control && hci_stack->control->on){ 4862 err = (*hci_stack->control->on)(); 4863 } 4864 if (err){ 4865 log_error( "POWER_ON failed"); 4866 hci_emit_hci_open_failed(); 4867 return err; 4868 } 4869 4870 // int chipset driver 4871 if (hci_stack->chipset && hci_stack->chipset->init){ 4872 hci_stack->chipset->init(hci_stack->config); 4873 } 4874 4875 // init transport 4876 if (hci_stack->hci_transport->init){ 4877 hci_stack->hci_transport->init(hci_stack->config); 4878 } 4879 4880 // open transport 4881 err = hci_stack->hci_transport->open(); 4882 if (err){ 4883 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4884 if (hci_stack->control && hci_stack->control->off){ 4885 (*hci_stack->control->off)(); 4886 } 4887 hci_emit_hci_open_failed(); 4888 return err; 4889 } 4890 return 0; 4891 } 4892 4893 static void hci_power_control_off(void){ 4894 4895 log_info("hci_power_control_off"); 4896 4897 // close low-level device 4898 hci_stack->hci_transport->close(); 4899 4900 log_info("hci_power_control_off - hci_transport closed"); 4901 4902 // power off 4903 if (hci_stack->control && hci_stack->control->off){ 4904 (*hci_stack->control->off)(); 4905 } 4906 4907 log_info("hci_power_control_off - control closed"); 4908 4909 hci_stack->state = HCI_STATE_OFF; 4910 } 4911 4912 static void hci_power_control_sleep(void){ 4913 4914 log_info("hci_power_control_sleep"); 4915 4916 #if 0 4917 // don't close serial port during sleep 4918 4919 // close low-level device 4920 hci_stack->hci_transport->close(hci_stack->config); 4921 #endif 4922 4923 // sleep mode 4924 if (hci_stack->control && hci_stack->control->sleep){ 4925 (*hci_stack->control->sleep)(); 4926 } 4927 4928 hci_stack->state = HCI_STATE_SLEEPING; 4929 } 4930 4931 static int hci_power_control_wake(void){ 4932 4933 log_info("hci_power_control_wake"); 4934 4935 // wake on 4936 if (hci_stack->control && hci_stack->control->wake){ 4937 (*hci_stack->control->wake)(); 4938 } 4939 4940 #if 0 4941 // open low-level device 4942 int err = hci_stack->hci_transport->open(hci_stack->config); 4943 if (err){ 4944 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4945 if (hci_stack->control && hci_stack->control->off){ 4946 (*hci_stack->control->off)(); 4947 } 4948 hci_emit_hci_open_failed(); 4949 return err; 4950 } 4951 #endif 4952 4953 return 0; 4954 } 4955 4956 static void hci_power_enter_initializing_state(void){ 4957 // set up state machine 4958 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4959 hci_stack->hci_packet_buffer_reserved = false; 4960 hci_stack->state = HCI_STATE_INITIALIZING; 4961 4962 if (hci_stack->chipset_pre_init) { 4963 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 4964 } else { 4965 hci_stack->substate = HCI_INIT_SEND_RESET; 4966 } 4967 } 4968 4969 static void hci_power_enter_halting_state(void){ 4970 #ifdef ENABLE_BLE 4971 // drop entries scheduled for removal, mark others for re-adding 4972 btstack_linked_list_iterator_t it; 4973 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 4974 while (btstack_linked_list_iterator_has_next(&it)){ 4975 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 4976 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 4977 btstack_linked_list_iterator_remove(&it); 4978 btstack_memory_whitelist_entry_free(entry); 4979 } else { 4980 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 4981 } 4982 } 4983 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4984 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 4985 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 4986 while (btstack_linked_list_iterator_has_next(&it)){ 4987 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 4988 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 4989 btstack_linked_list_iterator_remove(&it); 4990 btstack_memory_periodic_advertiser_list_entry_free(entry); 4991 } else { 4992 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 4993 continue; 4994 } 4995 } 4996 #endif 4997 #endif 4998 // see hci_run 4999 hci_stack->state = HCI_STATE_HALTING; 5000 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5001 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5002 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5003 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5004 btstack_run_loop_add_timer(&hci_stack->timeout); 5005 } 5006 5007 // returns error 5008 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5009 int err; 5010 switch (power_mode){ 5011 case HCI_POWER_ON: 5012 err = hci_power_control_on(); 5013 if (err != 0) { 5014 log_error("hci_power_control_on() error %d", err); 5015 return err; 5016 } 5017 hci_power_enter_initializing_state(); 5018 break; 5019 case HCI_POWER_OFF: 5020 // do nothing 5021 break; 5022 case HCI_POWER_SLEEP: 5023 // do nothing (with SLEEP == OFF) 5024 break; 5025 default: 5026 btstack_assert(false); 5027 break; 5028 } 5029 return ERROR_CODE_SUCCESS; 5030 } 5031 5032 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5033 switch (power_mode){ 5034 case HCI_POWER_ON: 5035 // do nothing 5036 break; 5037 case HCI_POWER_OFF: 5038 // no connections yet, just turn it off 5039 hci_power_control_off(); 5040 break; 5041 case HCI_POWER_SLEEP: 5042 // no connections yet, just turn it off 5043 hci_power_control_sleep(); 5044 break; 5045 default: 5046 btstack_assert(false); 5047 break; 5048 } 5049 return ERROR_CODE_SUCCESS; 5050 } 5051 5052 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5053 switch (power_mode){ 5054 case HCI_POWER_ON: 5055 // do nothing 5056 break; 5057 case HCI_POWER_OFF: 5058 hci_power_enter_halting_state(); 5059 break; 5060 case HCI_POWER_SLEEP: 5061 // see hci_run 5062 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5063 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5064 break; 5065 default: 5066 btstack_assert(false); 5067 break; 5068 } 5069 return ERROR_CODE_SUCCESS; 5070 } 5071 5072 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5073 switch (power_mode){ 5074 case HCI_POWER_ON: 5075 hci_power_enter_initializing_state(); 5076 break; 5077 case HCI_POWER_OFF: 5078 // do nothing 5079 break; 5080 case HCI_POWER_SLEEP: 5081 // see hci_run 5082 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5083 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5084 break; 5085 default: 5086 btstack_assert(false); 5087 break; 5088 } 5089 return ERROR_CODE_SUCCESS; 5090 } 5091 5092 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5093 switch (power_mode){ 5094 case HCI_POWER_ON: 5095 hci_power_enter_initializing_state(); 5096 break; 5097 case HCI_POWER_OFF: 5098 hci_power_enter_halting_state(); 5099 break; 5100 case HCI_POWER_SLEEP: 5101 // do nothing 5102 break; 5103 default: 5104 btstack_assert(false); 5105 break; 5106 } 5107 return ERROR_CODE_SUCCESS; 5108 } 5109 5110 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5111 int err; 5112 switch (power_mode){ 5113 case HCI_POWER_ON: 5114 err = hci_power_control_wake(); 5115 if (err) return err; 5116 hci_power_enter_initializing_state(); 5117 break; 5118 case HCI_POWER_OFF: 5119 hci_power_enter_halting_state(); 5120 break; 5121 case HCI_POWER_SLEEP: 5122 // do nothing 5123 break; 5124 default: 5125 btstack_assert(false); 5126 break; 5127 } 5128 return ERROR_CODE_SUCCESS; 5129 } 5130 5131 int hci_power_control(HCI_POWER_MODE power_mode){ 5132 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5133 btstack_run_loop_remove_timer(&hci_stack->timeout); 5134 int err = 0; 5135 switch (hci_stack->state){ 5136 case HCI_STATE_OFF: 5137 err = hci_power_control_state_off(power_mode); 5138 break; 5139 case HCI_STATE_INITIALIZING: 5140 err = hci_power_control_state_initializing(power_mode); 5141 break; 5142 case HCI_STATE_WORKING: 5143 err = hci_power_control_state_working(power_mode); 5144 break; 5145 case HCI_STATE_HALTING: 5146 err = hci_power_control_state_halting(power_mode); 5147 break; 5148 case HCI_STATE_FALLING_ASLEEP: 5149 err = hci_power_control_state_falling_asleep(power_mode); 5150 break; 5151 case HCI_STATE_SLEEPING: 5152 err = hci_power_control_state_sleeping(power_mode); 5153 break; 5154 default: 5155 btstack_assert(false); 5156 break; 5157 } 5158 if (err != 0){ 5159 return err; 5160 } 5161 5162 // create internal event 5163 hci_emit_state(); 5164 5165 // trigger next/first action 5166 hci_run(); 5167 5168 return 0; 5169 } 5170 5171 5172 static void hci_halting_run(void) { 5173 5174 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5175 5176 hci_connection_t *connection; 5177 #ifdef ENABLE_BLE 5178 #ifdef ENABLE_LE_PERIPHERAL 5179 bool stop_advertismenets; 5180 #endif 5181 #endif 5182 5183 switch (hci_stack->substate) { 5184 case HCI_HALTING_CLASSIC_STOP: 5185 #ifdef ENABLE_CLASSIC 5186 if (!hci_can_send_command_packet_now()) return; 5187 5188 if (hci_stack->connectable || hci_stack->discoverable){ 5189 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5190 hci_send_cmd(&hci_write_scan_enable, 0); 5191 return; 5192 } 5193 #endif 5194 /* fall through */ 5195 5196 case HCI_HALTING_LE_ADV_STOP: 5197 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5198 5199 #ifdef ENABLE_BLE 5200 #ifdef ENABLE_LE_PERIPHERAL 5201 if (!hci_can_send_command_packet_now()) return; 5202 5203 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5204 5205 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5206 if (hci_extended_advertising_supported()){ 5207 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5208 btstack_linked_list_iterator_t it; 5209 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5210 // stop all periodic advertisements and check if an extended set is active 5211 while (btstack_linked_list_iterator_has_next(&it)){ 5212 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5213 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5214 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5215 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5216 return; 5217 } 5218 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5219 stop_advertismenets = true; 5220 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5221 } 5222 } 5223 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5224 if (stop_advertismenets){ 5225 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5226 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5227 return; 5228 } 5229 } else 5230 #else /* ENABLE_LE_PERIPHERAL */ 5231 { 5232 if (stop_advertismenets) { 5233 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5234 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5235 return; 5236 } 5237 } 5238 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5239 #endif /* ENABLE_LE_PERIPHERAL */ 5240 #endif /* ENABLE_BLE */ 5241 5242 /* fall through */ 5243 5244 case HCI_HALTING_LE_SCAN_STOP: 5245 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5246 if (!hci_can_send_command_packet_now()) return; 5247 5248 #ifdef ENABLE_BLE 5249 #ifdef ENABLE_LE_CENTRAL 5250 if (hci_stack->le_scanning_active){ 5251 hci_le_scan_stop(); 5252 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5253 return; 5254 } 5255 #endif 5256 #endif 5257 5258 /* fall through */ 5259 5260 case HCI_HALTING_DISCONNECT_ALL: 5261 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5262 if (!hci_can_send_command_packet_now()) return; 5263 5264 // close all open connections 5265 connection = (hci_connection_t *) hci_stack->connections; 5266 if (connection) { 5267 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5268 5269 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5270 5271 // check state 5272 switch(connection->state) { 5273 case SENT_DISCONNECT: 5274 case RECEIVED_DISCONNECTION_COMPLETE: 5275 // wait until connection is gone 5276 return; 5277 default: 5278 break; 5279 } 5280 5281 // finally, send the disconnect command 5282 connection->state = SENT_DISCONNECT; 5283 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5284 return; 5285 } 5286 5287 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5288 // stop BIGs and BIG Syncs 5289 if (hci_stack->le_audio_bigs != NULL){ 5290 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5291 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5292 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5293 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5294 return; 5295 } 5296 if (hci_stack->le_audio_big_syncs != NULL){ 5297 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5298 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5299 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5300 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5301 return; 5302 } 5303 #endif 5304 5305 btstack_run_loop_remove_timer(&hci_stack->timeout); 5306 5307 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5308 log_info("HCI_STATE_HALTING: wait 50 ms"); 5309 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5310 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5311 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5312 btstack_run_loop_add_timer(&hci_stack->timeout); 5313 break; 5314 5315 case HCI_HALTING_W4_CLOSE_TIMER: 5316 // keep waiting 5317 break; 5318 5319 case HCI_HALTING_CLOSE: 5320 // close left over connections (that had not been properly closed before) 5321 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5322 hci_discard_connections(); 5323 5324 log_info("HCI_STATE_HALTING, calling off"); 5325 5326 // switch mode 5327 hci_power_control_off(); 5328 5329 log_info("HCI_STATE_HALTING, emitting state"); 5330 hci_emit_state(); 5331 log_info("HCI_STATE_HALTING, done"); 5332 break; 5333 5334 default: 5335 break; 5336 } 5337 }; 5338 5339 static void hci_falling_asleep_run(void){ 5340 hci_connection_t * connection; 5341 switch(hci_stack->substate) { 5342 case HCI_FALLING_ASLEEP_DISCONNECT: 5343 log_info("HCI_STATE_FALLING_ASLEEP"); 5344 // close all open connections 5345 connection = (hci_connection_t *) hci_stack->connections; 5346 if (connection){ 5347 5348 // send disconnect 5349 if (!hci_can_send_command_packet_now()) return; 5350 5351 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5352 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5353 5354 // send disconnected event right away - causes higher layer connections to get closed, too. 5355 hci_shutdown_connection(connection); 5356 return; 5357 } 5358 5359 if (hci_classic_supported()){ 5360 // disable page and inquiry scan 5361 if (!hci_can_send_command_packet_now()) return; 5362 5363 log_info("HCI_STATE_HALTING, disabling inq scans"); 5364 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5365 5366 // continue in next sub state 5367 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5368 break; 5369 } 5370 5371 /* fall through */ 5372 5373 case HCI_FALLING_ASLEEP_COMPLETE: 5374 log_info("HCI_STATE_HALTING, calling sleep"); 5375 // switch mode 5376 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5377 hci_emit_state(); 5378 break; 5379 5380 default: 5381 break; 5382 } 5383 } 5384 5385 #ifdef ENABLE_CLASSIC 5386 5387 static void hci_update_scan_enable(void){ 5388 // 2 = page scan, 1 = inq scan 5389 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5390 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5391 hci_run(); 5392 } 5393 5394 void gap_discoverable_control(uint8_t enable){ 5395 if (enable) enable = 1; // normalize argument 5396 5397 if (hci_stack->discoverable == enable){ 5398 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5399 return; 5400 } 5401 5402 hci_stack->discoverable = enable; 5403 hci_update_scan_enable(); 5404 } 5405 5406 void gap_connectable_control(uint8_t enable){ 5407 if (enable) enable = 1; // normalize argument 5408 5409 // don't emit event 5410 if (hci_stack->connectable == enable) return; 5411 5412 hci_stack->connectable = enable; 5413 hci_update_scan_enable(); 5414 } 5415 #endif 5416 5417 void gap_local_bd_addr(bd_addr_t address_buffer){ 5418 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5419 } 5420 5421 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5422 static void hci_host_num_completed_packets(void){ 5423 5424 // create packet manually as arrays are not supported and num_commands should not get reduced 5425 hci_reserve_packet_buffer(); 5426 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5427 5428 uint16_t size = 0; 5429 uint16_t num_handles = 0; 5430 packet[size++] = 0x35; 5431 packet[size++] = 0x0c; 5432 size++; // skip param len 5433 size++; // skip num handles 5434 5435 // add { handle, packets } entries 5436 btstack_linked_item_t * it; 5437 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5438 hci_connection_t * connection = (hci_connection_t *) it; 5439 if (connection->num_packets_completed){ 5440 little_endian_store_16(packet, size, connection->con_handle); 5441 size += 2; 5442 little_endian_store_16(packet, size, connection->num_packets_completed); 5443 size += 2; 5444 // 5445 num_handles++; 5446 connection->num_packets_completed = 0; 5447 } 5448 } 5449 5450 packet[2] = size - 3; 5451 packet[3] = num_handles; 5452 5453 hci_stack->host_completed_packets = 0; 5454 5455 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5456 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5457 5458 // release packet buffer for synchronous transport implementations 5459 if (hci_transport_synchronous()){ 5460 hci_release_packet_buffer(); 5461 hci_emit_transport_packet_sent(); 5462 } 5463 } 5464 #endif 5465 5466 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5467 UNUSED(ds); 5468 hci_stack->substate = HCI_HALTING_CLOSE; 5469 hci_halting_run(); 5470 } 5471 5472 static bool hci_run_acl_fragments(void){ 5473 if (hci_stack->acl_fragmentation_total_size > 0u) { 5474 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5475 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5476 if (connection) { 5477 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5478 hci_send_acl_packet_fragments(connection); 5479 return true; 5480 } 5481 } else { 5482 // connection gone -> discard further fragments 5483 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5484 hci_stack->acl_fragmentation_total_size = 0; 5485 hci_stack->acl_fragmentation_pos = 0; 5486 } 5487 } 5488 return false; 5489 } 5490 5491 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5492 static bool hci_run_iso_fragments(void){ 5493 if (hci_stack->iso_fragmentation_total_size > 0u) { 5494 // TODO: flow control 5495 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5496 hci_send_iso_packet_fragments(); 5497 return true; 5498 } 5499 } 5500 return false; 5501 } 5502 #endif 5503 5504 #ifdef ENABLE_CLASSIC 5505 5506 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5507 static bool hci_classic_operation_active(void) { 5508 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5509 return true; 5510 } 5511 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5512 return true; 5513 } 5514 btstack_linked_item_t * it; 5515 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5516 hci_connection_t *connection = (hci_connection_t *) it; 5517 switch (connection->state) { 5518 case SENT_CREATE_CONNECTION: 5519 case SENT_CANCEL_CONNECTION: 5520 case SENT_DISCONNECT: 5521 return true; 5522 default: 5523 break; 5524 } 5525 } 5526 return false; 5527 } 5528 #endif 5529 5530 static bool hci_run_general_gap_classic(void){ 5531 5532 // assert stack is working and classic is active 5533 if (hci_classic_supported() == false) return false; 5534 if (hci_stack->state != HCI_STATE_WORKING) return false; 5535 5536 // decline incoming connections 5537 if (hci_stack->decline_reason){ 5538 uint8_t reason = hci_stack->decline_reason; 5539 hci_stack->decline_reason = 0; 5540 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5541 return true; 5542 } 5543 5544 if (hci_stack->gap_tasks_classic != 0){ 5545 hci_run_gap_tasks_classic(); 5546 return true; 5547 } 5548 5549 // start/stop inquiry 5550 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5551 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5552 if (hci_classic_operation_active() == false) 5553 #endif 5554 { 5555 uint8_t duration = hci_stack->inquiry_state; 5556 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5557 if (hci_stack->inquiry_max_period_length != 0){ 5558 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); 5559 } else { 5560 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5561 } 5562 return true; 5563 } 5564 } 5565 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5566 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5567 hci_send_cmd(&hci_inquiry_cancel); 5568 return true; 5569 } 5570 5571 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5572 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5573 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5574 return true; 5575 } 5576 5577 // remote name request 5578 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5579 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5580 if (hci_classic_operation_active() == false) 5581 #endif 5582 { 5583 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5584 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5585 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5586 return true; 5587 } 5588 } 5589 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5590 // Local OOB data 5591 if (hci_stack->classic_read_local_oob_data){ 5592 hci_stack->classic_read_local_oob_data = false; 5593 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5594 hci_send_cmd(&hci_read_local_extended_oob_data); 5595 } else { 5596 hci_send_cmd(&hci_read_local_oob_data); 5597 } 5598 } 5599 #endif 5600 // pairing 5601 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5602 uint8_t state = hci_stack->gap_pairing_state; 5603 uint8_t pin_code[16]; 5604 switch (state){ 5605 case GAP_PAIRING_STATE_SEND_PIN: 5606 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5607 memset(pin_code, 0, 16); 5608 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5609 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5610 break; 5611 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5612 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5613 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5614 break; 5615 case GAP_PAIRING_STATE_SEND_PASSKEY: 5616 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5617 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5618 break; 5619 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5620 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5621 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5622 break; 5623 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5624 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5625 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5626 break; 5627 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5628 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5629 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5630 break; 5631 default: 5632 break; 5633 } 5634 return true; 5635 } 5636 return false; 5637 } 5638 #endif 5639 5640 #ifdef ENABLE_BLE 5641 5642 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5643 static uint8_t hci_le_num_phys(uint8_t phys){ 5644 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5645 btstack_assert(phys); 5646 return num_bits_set[phys]; 5647 } 5648 #endif 5649 5650 #ifdef ENABLE_LE_CENTRAL 5651 static void hci_le_scan_stop(void){ 5652 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5653 if (hci_extended_advertising_supported()) { 5654 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5655 } else 5656 #endif 5657 { 5658 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5659 } 5660 } 5661 5662 static void 5663 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5664 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5665 if (hci_extended_advertising_supported()) { 5666 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5667 uint16_t le_connection_scan_interval[3]; 5668 uint16_t le_connection_scan_window[3]; 5669 uint16_t le_connection_interval_min[3]; 5670 uint16_t le_connection_interval_max[3]; 5671 uint16_t le_connection_latency[3]; 5672 uint16_t le_supervision_timeout[3]; 5673 uint16_t le_minimum_ce_length[3]; 5674 uint16_t le_maximum_ce_length[3]; 5675 5676 uint8_t i; 5677 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5678 for (i=0;i<num_phys;i++){ 5679 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5680 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5681 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5682 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5683 le_connection_latency[i] = hci_stack->le_connection_latency; 5684 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5685 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5686 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5687 } 5688 hci_send_cmd(&hci_le_extended_create_connection, 5689 initiator_filter_policy, 5690 hci_stack->le_connection_own_addr_type, // our addr type: 5691 address_type, // peer address type 5692 address, // peer bd addr 5693 hci_stack->le_connection_phys, // initiating PHY 5694 le_connection_scan_interval, // conn scan interval 5695 le_connection_scan_window, // conn scan windows 5696 le_connection_interval_min, // conn interval min 5697 le_connection_interval_max, // conn interval max 5698 le_connection_latency, // conn latency 5699 le_supervision_timeout, // conn latency 5700 le_minimum_ce_length, // min ce length 5701 le_maximum_ce_length // max ce length 5702 ); 5703 } else 5704 #endif 5705 { 5706 hci_send_cmd(&hci_le_create_connection, 5707 hci_stack->le_connection_scan_interval, // conn scan interval 5708 hci_stack->le_connection_scan_window, // conn scan windows 5709 initiator_filter_policy, // don't use whitelist 5710 address_type, // peer address type 5711 address, // peer bd addr 5712 hci_stack->le_connection_own_addr_type, // our addr type: 5713 hci_stack->le_connection_interval_min, // conn interval min 5714 hci_stack->le_connection_interval_max, // conn interval max 5715 hci_stack->le_connection_latency, // conn latency 5716 hci_stack->le_supervision_timeout, // conn latency 5717 hci_stack->le_minimum_ce_length, // min ce length 5718 hci_stack->le_maximum_ce_length // max ce length 5719 ); 5720 } 5721 } 5722 #endif 5723 5724 #ifdef ENABLE_LE_PERIPHERAL 5725 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5726 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5727 uint8_t operation = 0; 5728 if (pos == 0){ 5729 // first fragment or complete data 5730 operation |= 1; 5731 } 5732 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5733 // last fragment or complete data 5734 operation |= 2; 5735 } 5736 return operation; 5737 } 5738 #endif 5739 #endif 5740 5741 static bool hci_run_general_gap_le(void){ 5742 5743 btstack_linked_list_iterator_t lit; 5744 5745 // Phase 1: collect what to stop 5746 5747 #ifdef ENABLE_LE_CENTRAL 5748 bool scanning_stop = false; 5749 bool connecting_stop = false; 5750 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5751 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5752 bool periodic_sync_stop = false; 5753 #endif 5754 #endif 5755 #endif 5756 5757 #ifdef ENABLE_LE_PERIPHERAL 5758 bool advertising_stop = false; 5759 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5760 le_advertising_set_t * advertising_stop_set = NULL; 5761 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5762 bool periodic_advertising_stop = false; 5763 #endif 5764 #endif 5765 #endif 5766 5767 // check if own address changes 5768 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5769 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5770 5771 // check if whitelist needs modification 5772 bool whitelist_modification_pending = false; 5773 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5774 while (btstack_linked_list_iterator_has_next(&lit)){ 5775 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5776 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5777 whitelist_modification_pending = true; 5778 break; 5779 } 5780 } 5781 5782 // check if resolving list needs modification 5783 bool resolving_list_modification_pending = false; 5784 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5785 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5786 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5787 resolving_list_modification_pending = true; 5788 } 5789 #endif 5790 5791 #ifdef ENABLE_LE_CENTRAL 5792 5793 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5794 // check if periodic advertiser list needs modification 5795 bool periodic_list_modification_pending = false; 5796 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5797 while (btstack_linked_list_iterator_has_next(&lit)){ 5798 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5799 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5800 periodic_list_modification_pending = true; 5801 break; 5802 } 5803 } 5804 #endif 5805 5806 // scanning control 5807 if (hci_stack->le_scanning_active) { 5808 // stop if: 5809 // - parameter change required 5810 // - it's disabled 5811 // - whitelist change required but used for scanning 5812 // - resolving list modified 5813 // - own address changes 5814 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5815 if ((hci_stack->le_scanning_param_update) || 5816 !hci_stack->le_scanning_enabled || 5817 (scanning_uses_whitelist && whitelist_modification_pending) || 5818 resolving_list_modification_pending || 5819 random_address_change){ 5820 5821 scanning_stop = true; 5822 } 5823 } 5824 5825 // connecting control 5826 bool connecting_with_whitelist; 5827 switch (hci_stack->le_connecting_state){ 5828 case LE_CONNECTING_DIRECT: 5829 case LE_CONNECTING_WHITELIST: 5830 // stop connecting if: 5831 // - connecting uses white and whitelist modification pending 5832 // - if it got disabled 5833 // - resolving list modified 5834 // - own address changes 5835 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5836 if ((connecting_with_whitelist && whitelist_modification_pending) || 5837 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5838 resolving_list_modification_pending || 5839 random_address_change) { 5840 5841 connecting_stop = true; 5842 } 5843 break; 5844 default: 5845 break; 5846 } 5847 5848 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5849 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5850 // periodic sync control 5851 bool sync_with_advertiser_list; 5852 switch(hci_stack->le_periodic_sync_state){ 5853 case LE_CONNECTING_DIRECT: 5854 case LE_CONNECTING_WHITELIST: 5855 // stop sync if: 5856 // - sync with advertiser list and advertiser list modification pending 5857 // - if it got disabled 5858 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5859 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5860 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5861 periodic_sync_stop = true; 5862 } 5863 break; 5864 default: 5865 break; 5866 } 5867 #endif 5868 #endif 5869 5870 #endif /* ENABLE_LE_CENTRAL */ 5871 5872 #ifdef ENABLE_LE_PERIPHERAL 5873 // le advertisement control 5874 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5875 // stop if: 5876 // - parameter change required 5877 // - random address used in advertising and changes 5878 // - it's disabled 5879 // - whitelist change required but used for advertisement filter policy 5880 // - resolving list modified 5881 // - own address changes 5882 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5883 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5884 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5885 if (advertising_change || 5886 (advertising_uses_random_address && random_address_change) || 5887 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5888 (advertising_uses_whitelist && whitelist_modification_pending) || 5889 resolving_list_modification_pending || 5890 random_address_change) { 5891 5892 advertising_stop = true; 5893 } 5894 } 5895 5896 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5897 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5898 btstack_linked_list_iterator_t it; 5899 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5900 while (btstack_linked_list_iterator_has_next(&it)){ 5901 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5902 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5903 // stop if: 5904 // - parameter change required 5905 // - random address used in connectable advertising and changes 5906 // - it's disabled 5907 // - whitelist change required but used for advertisement filter policy 5908 // - resolving list modified 5909 // - own address changes 5910 // - advertisement set will be removed 5911 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5912 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5913 bool advertising_uses_random_address = 5914 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5915 advertising_connectable; 5916 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5917 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5918 bool advertising_set_random_address_change = 5919 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5920 bool advertising_set_will_be_removed = 5921 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5922 if (advertising_parameter_change || 5923 (advertising_uses_random_address && advertising_set_random_address_change) || 5924 (advertising_enabled == false) || 5925 (advertising_uses_whitelist && whitelist_modification_pending) || 5926 resolving_list_modification_pending || 5927 advertising_set_will_be_removed) { 5928 5929 advertising_stop = true; 5930 advertising_stop_set = advertising_set; 5931 break; 5932 } 5933 } 5934 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5935 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5936 // stop if: 5937 // - it's disabled 5938 // - parameter change required 5939 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5940 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5941 if ((periodic_enabled == false) || periodic_parameter_change){ 5942 periodic_advertising_stop = true; 5943 advertising_stop_set = advertising_set; 5944 } 5945 } 5946 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5947 } 5948 } 5949 #endif 5950 5951 #endif 5952 5953 5954 // Phase 2: stop everything that should be off during modifications 5955 5956 5957 // 2.1 Outgoing connection 5958 #ifdef ENABLE_LE_CENTRAL 5959 if (connecting_stop){ 5960 hci_send_cmd(&hci_le_create_connection_cancel); 5961 return true; 5962 } 5963 #endif 5964 5965 // 2.2 Scanning 5966 #ifdef ENABLE_LE_CENTRAL 5967 if (scanning_stop){ 5968 hci_stack->le_scanning_active = false; 5969 hci_le_scan_stop(); 5970 return true; 5971 } 5972 5973 // 2.3 Periodic Sync 5974 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5975 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5976 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5977 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5978 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5979 return true; 5980 } 5981 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5982 if (periodic_sync_stop){ 5983 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5984 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5985 return true; 5986 } 5987 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5988 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5989 #endif /* ENABLE_LE_CENTRAL */ 5990 5991 // 2.4 Advertising: legacy, extended, periodic 5992 #ifdef ENABLE_LE_PERIPHERAL 5993 if (advertising_stop){ 5994 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5995 if (hci_extended_advertising_supported()) { 5996 uint8_t advertising_stop_handle; 5997 if (advertising_stop_set != NULL){ 5998 advertising_stop_handle = advertising_stop_set->advertising_handle; 5999 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6000 } else { 6001 advertising_stop_handle = 0; 6002 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6003 } 6004 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6005 const uint16_t durations[] = { 0 }; 6006 const uint16_t max_events[] = { 0 }; 6007 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6008 } else 6009 #endif 6010 { 6011 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6012 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6013 } 6014 return true; 6015 } 6016 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6017 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6018 if (periodic_advertising_stop){ 6019 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6020 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6021 return true; 6022 } 6023 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6024 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6025 #endif /* ENABLE_LE_PERIPHERAL */ 6026 6027 6028 // Phase 3: modify 6029 6030 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6031 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6032 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6033 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6034 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6035 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6036 #endif 6037 return true; 6038 } 6039 6040 #ifdef ENABLE_LE_CENTRAL 6041 if (hci_stack->le_scanning_param_update){ 6042 hci_stack->le_scanning_param_update = false; 6043 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6044 if (hci_extended_advertising_supported()){ 6045 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6046 uint8_t scan_types[2]; 6047 uint16_t scan_intervals[2]; 6048 uint16_t scan_windows[2]; 6049 6050 uint8_t i; 6051 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6052 for (i=0;i<num_phys;i++){ 6053 scan_types[i] = hci_stack->le_scan_type; 6054 scan_intervals[i] = hci_stack->le_scan_interval; 6055 scan_windows[i] = hci_stack->le_scan_window; 6056 } 6057 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6058 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6059 } else 6060 #endif 6061 { 6062 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6063 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6064 } 6065 return true; 6066 } 6067 #endif 6068 6069 #ifdef ENABLE_LE_PERIPHERAL 6070 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6071 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6072 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6073 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6074 if (hci_extended_advertising_supported()){ 6075 // map advertisment type to advertising event properties 6076 uint16_t adv_event_properties = 0; 6077 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6078 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6079 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6080 } 6081 hci_stack->le_advertising_set_in_current_command = 0; 6082 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6083 0, 6084 adv_event_properties, 6085 hci_stack->le_advertisements_interval_min, 6086 hci_stack->le_advertisements_interval_max, 6087 hci_stack->le_advertisements_channel_map, 6088 hci_stack->le_advertisements_own_addr_type, 6089 hci_stack->le_advertisements_direct_address_type, 6090 hci_stack->le_advertisements_direct_address, 6091 hci_stack->le_advertisements_filter_policy, 6092 0x7f, // tx power: no preference 6093 0x01, // primary adv phy: LE 1M 6094 0, // secondary adv max skip 6095 0, // secondary adv phy 6096 0, // adv sid 6097 0 // scan request notification 6098 ); 6099 } else 6100 #endif 6101 { 6102 hci_send_cmd(&hci_le_set_advertising_parameters, 6103 hci_stack->le_advertisements_interval_min, 6104 hci_stack->le_advertisements_interval_max, 6105 hci_stack->le_advertisements_type, 6106 hci_stack->le_advertisements_own_addr_type, 6107 hci_stack->le_advertisements_direct_address_type, 6108 hci_stack->le_advertisements_direct_address, 6109 hci_stack->le_advertisements_channel_map, 6110 hci_stack->le_advertisements_filter_policy); 6111 } 6112 return true; 6113 } 6114 6115 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6116 // assumption: only set if extended advertising is supported 6117 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6118 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6119 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6120 return true; 6121 } 6122 #endif 6123 6124 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6125 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6126 uint8_t adv_data_clean[31]; 6127 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6128 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6129 hci_stack->le_advertisements_data_len); 6130 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6131 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6132 if (hci_extended_advertising_supported()){ 6133 hci_stack->le_advertising_set_in_current_command = 0; 6134 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6135 } else 6136 #endif 6137 { 6138 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6139 } 6140 return true; 6141 } 6142 6143 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6144 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6145 uint8_t scan_data_clean[31]; 6146 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6147 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6148 hci_stack->le_scan_response_data_len); 6149 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6150 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6151 if (hci_extended_advertising_supported()){ 6152 hci_stack->le_advertising_set_in_current_command = 0; 6153 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6154 } else 6155 #endif 6156 { 6157 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6158 } 6159 return true; 6160 } 6161 6162 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6163 if (hci_extended_advertising_supported()) { 6164 btstack_linked_list_iterator_t it; 6165 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6166 while (btstack_linked_list_iterator_has_next(&it)){ 6167 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6168 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6169 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6170 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6171 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6172 return true; 6173 } 6174 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6175 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6176 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6177 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6178 advertising_set->advertising_handle, 6179 advertising_set->extended_params.advertising_event_properties, 6180 advertising_set->extended_params.primary_advertising_interval_min, 6181 advertising_set->extended_params.primary_advertising_interval_max, 6182 advertising_set->extended_params.primary_advertising_channel_map, 6183 advertising_set->extended_params.own_address_type, 6184 advertising_set->extended_params.peer_address_type, 6185 advertising_set->extended_params.peer_address, 6186 advertising_set->extended_params.advertising_filter_policy, 6187 advertising_set->extended_params.advertising_tx_power, 6188 advertising_set->extended_params.primary_advertising_phy, 6189 advertising_set->extended_params.secondary_advertising_max_skip, 6190 advertising_set->extended_params.secondary_advertising_phy, 6191 advertising_set->extended_params.advertising_sid, 6192 advertising_set->extended_params.scan_request_notification_enable 6193 ); 6194 return true; 6195 } 6196 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6197 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6198 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6199 return true; 6200 } 6201 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6202 uint16_t pos = advertising_set->adv_data_pos; 6203 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6204 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6205 if ((operation & 0x02) != 0){ 6206 // last fragment or complete data 6207 operation |= 2; 6208 advertising_set->adv_data_pos = 0; 6209 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6210 } else { 6211 advertising_set->adv_data_pos += data_to_upload; 6212 } 6213 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6214 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6215 return true; 6216 } 6217 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6218 uint16_t pos = advertising_set->scan_data_pos; 6219 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6220 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6221 if ((operation & 0x02) != 0){ 6222 advertising_set->scan_data_pos = 0; 6223 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6224 } else { 6225 advertising_set->scan_data_pos += data_to_upload; 6226 } 6227 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6228 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6229 return true; 6230 } 6231 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6232 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6233 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6234 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6235 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6236 advertising_set->advertising_handle, 6237 advertising_set->periodic_params.periodic_advertising_interval_min, 6238 advertising_set->periodic_params.periodic_advertising_interval_max, 6239 advertising_set->periodic_params.periodic_advertising_properties); 6240 return true; 6241 } 6242 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6243 uint16_t pos = advertising_set->periodic_data_pos; 6244 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6245 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6246 if ((operation & 0x02) != 0){ 6247 // last fragment or complete data 6248 operation |= 2; 6249 advertising_set->periodic_data_pos = 0; 6250 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6251 } else { 6252 advertising_set->periodic_data_pos += data_to_upload; 6253 } 6254 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6255 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6256 return true; 6257 } 6258 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6259 } 6260 } 6261 #endif 6262 6263 #endif 6264 6265 #ifdef ENABLE_LE_CENTRAL 6266 // if connect with whitelist was active and is not cancelled yet, wait until next time 6267 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6268 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6269 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6270 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6271 #endif 6272 #endif 6273 6274 // LE Whitelist Management 6275 if (whitelist_modification_pending){ 6276 // add/remove entries 6277 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6278 while (btstack_linked_list_iterator_has_next(&lit)){ 6279 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6280 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6281 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6282 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6283 return true; 6284 } 6285 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6286 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6287 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6288 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6289 return true; 6290 } 6291 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6292 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6293 btstack_memory_whitelist_entry_free(entry); 6294 } 6295 } 6296 } 6297 6298 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6299 // LE Resolving List Management 6300 if (resolving_list_supported) { 6301 uint16_t i; 6302 switch (hci_stack->le_resolving_list_state) { 6303 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6304 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6305 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6306 return true; 6307 case LE_RESOLVING_LIST_READ_SIZE: 6308 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6309 hci_send_cmd(&hci_le_read_resolving_list_size); 6310 return true; 6311 case LE_RESOLVING_LIST_SEND_CLEAR: 6312 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6313 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6314 sizeof(hci_stack->le_resolving_list_add_entries)); 6315 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6316 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6317 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6318 sizeof(hci_stack->le_resolving_list_remove_entries)); 6319 hci_send_cmd(&hci_le_clear_resolving_list); 6320 return true; 6321 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6322 // first remove old entries 6323 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6324 uint8_t offset = i >> 3; 6325 uint8_t mask = 1 << (i & 7); 6326 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6327 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6328 bd_addr_t peer_identity_addreses; 6329 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6330 sm_key_t peer_irk; 6331 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6332 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6333 6334 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6335 // trigger whitelist entry 'update' (work around for controller bug) 6336 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6337 while (btstack_linked_list_iterator_has_next(&lit)) { 6338 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6339 if (entry->address_type != peer_identity_addr_type) continue; 6340 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6341 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6342 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6343 } 6344 #endif 6345 6346 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6347 peer_identity_addreses); 6348 return true; 6349 } 6350 6351 // then add new entries 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_add_entries[offset] & mask) == 0) continue; 6356 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6357 bd_addr_t peer_identity_addreses; 6358 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6359 sm_key_t peer_irk; 6360 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6361 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6362 if (btstack_is_null(peer_irk, 16)) continue; 6363 const uint8_t *local_irk = gap_get_persistent_irk(); 6364 // command uses format specifier 'P' that stores 16-byte value without flip 6365 uint8_t local_irk_flipped[16]; 6366 uint8_t peer_irk_flipped[16]; 6367 reverse_128(local_irk, local_irk_flipped); 6368 reverse_128(peer_irk, peer_irk_flipped); 6369 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6370 peer_irk_flipped, local_irk_flipped); 6371 return true; 6372 } 6373 6374 // finally, set privacy mode 6375 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6376 uint8_t offset = i >> 3; 6377 uint8_t mask = 1 << (i & 7); 6378 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6379 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6380 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6381 // Network Privacy Mode is default 6382 continue; 6383 } 6384 bd_addr_t peer_identity_address; 6385 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6386 sm_key_t peer_irk; 6387 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6388 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6389 if (btstack_is_null(peer_irk, 16)) continue; 6390 // command uses format specifier 'P' that stores 16-byte value without flip 6391 uint8_t peer_irk_flipped[16]; 6392 reverse_128(peer_irk, peer_irk_flipped); 6393 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6394 return true; 6395 } 6396 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6397 break; 6398 6399 default: 6400 break; 6401 } 6402 } 6403 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6404 #endif 6405 6406 #ifdef ENABLE_LE_CENTRAL 6407 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6408 // LE Whitelist Management 6409 if (periodic_list_modification_pending){ 6410 // add/remove entries 6411 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6412 while (btstack_linked_list_iterator_has_next(&lit)){ 6413 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6414 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6415 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6416 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6417 return true; 6418 } 6419 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6420 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6421 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6422 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6423 return true; 6424 } 6425 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6426 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6427 btstack_memory_periodic_advertiser_list_entry_free(entry); 6428 } 6429 } 6430 } 6431 #endif 6432 #endif 6433 6434 #ifdef ENABLE_LE_CENTRAL 6435 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6436 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6437 if (hci_stack->le_past_set_default_params){ 6438 hci_stack->le_past_set_default_params = false; 6439 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6440 hci_stack->le_past_mode, 6441 hci_stack->le_past_skip, 6442 hci_stack->le_past_sync_timeout, 6443 hci_stack->le_past_cte_type); 6444 return true; 6445 } 6446 #endif 6447 #endif 6448 #endif 6449 6450 // post-pone all actions until stack is fully working 6451 if (hci_stack->state != HCI_STATE_WORKING) return false; 6452 6453 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6454 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6455 6456 // Phase 4: restore state 6457 6458 #ifdef ENABLE_LE_CENTRAL 6459 // re-start scanning 6460 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6461 hci_stack->le_scanning_active = true; 6462 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6463 if (hci_extended_advertising_supported()){ 6464 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6465 } else 6466 #endif 6467 { 6468 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6469 } 6470 return true; 6471 } 6472 #endif 6473 6474 #ifdef ENABLE_LE_CENTRAL 6475 // re-start connecting 6476 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6477 bd_addr_t null_addr; 6478 memset(null_addr, 0, 6); 6479 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6480 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6481 hci_send_le_create_connection(1, 0, null_addr); 6482 return true; 6483 } 6484 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6485 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6486 switch(hci_stack->le_periodic_sync_request){ 6487 case LE_CONNECTING_DIRECT: 6488 case LE_CONNECTING_WHITELIST: 6489 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6490 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6491 hci_stack->le_periodic_sync_options, 6492 hci_stack->le_periodic_sync_advertising_sid, 6493 hci_stack->le_periodic_sync_advertiser_address_type, 6494 hci_stack->le_periodic_sync_advertiser_address, 6495 hci_stack->le_periodic_sync_skip, 6496 hci_stack->le_periodic_sync_timeout, 6497 hci_stack->le_periodic_sync_cte_type); 6498 return true; 6499 default: 6500 break; 6501 } 6502 } 6503 #endif 6504 #endif 6505 6506 #ifdef ENABLE_LE_PERIPHERAL 6507 // re-start advertising 6508 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6509 // check if advertisements should be enabled given 6510 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6511 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6512 6513 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6514 if (hci_extended_advertising_supported()){ 6515 const uint8_t advertising_handles[] = { 0 }; 6516 const uint16_t durations[] = { 0 }; 6517 const uint16_t max_events[] = { 0 }; 6518 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6519 } else 6520 #endif 6521 { 6522 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6523 } 6524 return true; 6525 } 6526 6527 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6528 if (hci_extended_advertising_supported()) { 6529 btstack_linked_list_iterator_t it; 6530 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6531 while (btstack_linked_list_iterator_has_next(&it)) { 6532 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6533 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6534 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6535 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6536 const uint16_t durations[] = { advertising_set->enable_timeout }; 6537 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6538 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6539 return true; 6540 } 6541 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6542 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6543 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6544 uint8_t enable = 1; 6545 if (advertising_set->periodic_include_adi){ 6546 enable |= 2; 6547 } 6548 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6549 return true; 6550 } 6551 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6552 } 6553 } 6554 #endif 6555 #endif 6556 6557 return false; 6558 } 6559 6560 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6561 static bool hci_run_iso_tasks(void){ 6562 btstack_linked_list_iterator_t it; 6563 6564 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6565 return false; 6566 } 6567 6568 // BIG 6569 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6570 while (btstack_linked_list_iterator_has_next(&it)){ 6571 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6572 switch (big->state){ 6573 case LE_AUDIO_BIG_STATE_CREATE: 6574 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6575 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6576 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6577 hci_send_cmd(&hci_le_create_big, 6578 big->params->big_handle, 6579 big->params->advertising_handle, 6580 big->params->num_bis, 6581 big->params->sdu_interval_us, 6582 big->params->max_sdu, 6583 big->params->max_transport_latency_ms, 6584 big->params->rtn, 6585 big->params->phy, 6586 big->params->packing, 6587 big->params->framing, 6588 big->params->encryption, 6589 big->params->broadcast_code); 6590 return true; 6591 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6592 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6593 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); 6594 return true; 6595 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6596 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6597 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6598 return true; 6599 case LE_AUDIO_BIG_STATE_TERMINATE: 6600 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6601 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6602 return true; 6603 default: 6604 break; 6605 } 6606 } 6607 6608 // BIG Sync 6609 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6610 while (btstack_linked_list_iterator_has_next(&it)){ 6611 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6612 switch (big_sync->state){ 6613 case LE_AUDIO_BIG_STATE_CREATE: 6614 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6615 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6616 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6617 hci_send_cmd(&hci_le_big_create_sync, 6618 big_sync->params->big_handle, 6619 big_sync->params->sync_handle, 6620 big_sync->params->encryption, 6621 big_sync->params->broadcast_code, 6622 big_sync->params->mse, 6623 big_sync->params->big_sync_timeout_10ms, 6624 big_sync->params->num_bis, 6625 big_sync->params->bis_indices); 6626 return true; 6627 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6628 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6629 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); 6630 return true; 6631 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6632 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6633 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6634 return true; 6635 case LE_AUDIO_BIG_STATE_TERMINATE: 6636 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6637 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6638 return true; 6639 default: 6640 break; 6641 } 6642 } 6643 6644 // CIG 6645 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6646 while (btstack_linked_list_iterator_has_next(&it)) { 6647 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6648 uint8_t i; 6649 // Set CIG Parameters 6650 uint8_t cis_id[MAX_NR_CIS]; 6651 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6652 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6653 uint8_t phy_c_to_p[MAX_NR_CIS]; 6654 uint8_t phy_p_to_c[MAX_NR_CIS]; 6655 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6656 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6657 switch (cig->state) { 6658 case LE_AUDIO_CIG_STATE_CREATE: 6659 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6660 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6661 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6662 le_audio_cig_params_t * params = cig->params; 6663 for (i = 0; i < params->num_cis; i++) { 6664 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6665 cis_id[i] = cis_params->cis_id; 6666 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6667 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6668 phy_c_to_p[i] = cis_params->phy_c_to_p; 6669 phy_p_to_c[i] = cis_params->phy_p_to_c; 6670 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6671 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6672 } 6673 hci_send_cmd(&hci_le_set_cig_parameters, 6674 cig->cig_id, 6675 params->sdu_interval_c_to_p, 6676 params->sdu_interval_p_to_c, 6677 params->worst_case_sca, 6678 params->packing, 6679 params->framing, 6680 params->max_transport_latency_c_to_p, 6681 params->max_transport_latency_p_to_c, 6682 params->num_cis, 6683 cis_id, 6684 max_sdu_c_to_p, 6685 max_sdu_p_to_c, 6686 phy_c_to_p, 6687 phy_p_to_c, 6688 rtn_c_to_p, 6689 rtn_p_to_c 6690 ); 6691 return true; 6692 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6693 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6694 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6695 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6696 for (i=0;i<cig->num_cis;i++){ 6697 cig->cis_setup_active[i] = true; 6698 } 6699 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6700 return true; 6701 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6702 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6703 // find next path to setup 6704 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6705 if (cig->cis_established[cis_index] == false) { 6706 continue; 6707 } 6708 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6709 bool setup = true; 6710 if (cis_direction == 0){ 6711 // 0 - input - host to controller 6712 // we are central => central to peripheral 6713 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6714 } else { 6715 // 1 - output - controller to host 6716 // we are central => peripheral to central 6717 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6718 } 6719 if (setup){ 6720 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6721 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6722 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6723 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6724 return true; 6725 } 6726 cig->state_vars.next_cis++; 6727 } 6728 // emit done 6729 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6730 default: 6731 break; 6732 } 6733 } 6734 6735 // CIS Accept/Reject 6736 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6737 while (btstack_linked_list_iterator_has_next(&it)) { 6738 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6739 hci_con_handle_t con_handle; 6740 switch (iso_stream->state){ 6741 case HCI_ISO_STREAM_W2_ACCEPT: 6742 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6743 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6744 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6745 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6746 return true; 6747 case HCI_ISO_STREAM_W2_REJECT: 6748 con_handle = iso_stream->cis_handle; 6749 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6750 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6751 hci_iso_stream_finalize(iso_stream); 6752 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6753 return true; 6754 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6755 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6756 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6757 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6758 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6759 break; 6760 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6761 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6762 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6763 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6764 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6765 break; 6766 default: 6767 break; 6768 } 6769 } 6770 6771 return false; 6772 } 6773 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6774 #endif 6775 6776 static bool hci_run_general_pending_commands(void){ 6777 btstack_linked_item_t * it; 6778 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6779 hci_connection_t * connection = (hci_connection_t *) it; 6780 6781 switch(connection->state){ 6782 case SEND_CREATE_CONNECTION: 6783 switch(connection->address_type){ 6784 #ifdef ENABLE_CLASSIC 6785 case BD_ADDR_TYPE_ACL: 6786 log_info("sending hci_create_connection"); 6787 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6788 break; 6789 #endif 6790 default: 6791 #ifdef ENABLE_BLE 6792 #ifdef ENABLE_LE_CENTRAL 6793 log_info("sending hci_le_create_connection"); 6794 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6795 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6796 hci_send_le_create_connection(0, connection->address_type, connection->address); 6797 connection->state = SENT_CREATE_CONNECTION; 6798 #endif 6799 #endif 6800 break; 6801 } 6802 return true; 6803 6804 #ifdef ENABLE_CLASSIC 6805 case RECEIVED_CONNECTION_REQUEST: 6806 connection->role = HCI_ROLE_SLAVE; 6807 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6808 log_info("sending hci_accept_connection_request"); 6809 connection->state = ACCEPTED_CONNECTION_REQUEST; 6810 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6811 return true; 6812 } 6813 break; 6814 #endif 6815 case SEND_DISCONNECT: 6816 connection->state = SENT_DISCONNECT; 6817 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6818 return true; 6819 6820 default: 6821 break; 6822 } 6823 6824 // no further commands if connection is about to get shut down 6825 if (connection->state == SENT_DISCONNECT) continue; 6826 6827 #ifdef ENABLE_CLASSIC 6828 6829 // Handling link key request requires remote supported features 6830 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6831 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6832 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6833 6834 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6835 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6836 if (have_link_key && security_level_sufficient){ 6837 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6838 } else { 6839 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6840 } 6841 return true; 6842 } 6843 6844 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6845 log_info("denying to pin request"); 6846 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6847 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6848 return true; 6849 } 6850 6851 // security assessment requires remote features 6852 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6853 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6854 hci_ssp_assess_security_on_io_cap_request(connection); 6855 // 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 6856 } 6857 6858 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6859 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6860 // set authentication requirements: 6861 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6862 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6863 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6864 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6865 authreq |= 1; 6866 } 6867 bool bonding = hci_stack->bondable; 6868 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6869 // if we have received IO Cap Response, we're in responder role 6870 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6871 if (bonding && !remote_bonding){ 6872 log_info("Remote not bonding, dropping local flag"); 6873 bonding = false; 6874 } 6875 } 6876 if (bonding){ 6877 if (connection->bonding_flags & BONDING_DEDICATED){ 6878 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6879 } else { 6880 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6881 } 6882 } 6883 uint8_t have_oob_data = 0; 6884 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6885 if (connection->classic_oob_c_192 != NULL){ 6886 have_oob_data |= 1; 6887 } 6888 if (connection->classic_oob_c_256 != NULL){ 6889 have_oob_data |= 2; 6890 } 6891 #endif 6892 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6893 return true; 6894 } 6895 6896 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6897 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6898 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6899 return true; 6900 } 6901 6902 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6903 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6904 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6905 const uint8_t zero[16] = { 0 }; 6906 const uint8_t * r_192 = zero; 6907 const uint8_t * c_192 = zero; 6908 const uint8_t * r_256 = zero; 6909 const uint8_t * c_256 = zero; 6910 // verify P-256 OOB 6911 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6912 c_256 = connection->classic_oob_c_256; 6913 if (connection->classic_oob_r_256 != NULL) { 6914 r_256 = connection->classic_oob_r_256; 6915 } 6916 } 6917 // verify P-192 OOB 6918 if ((connection->classic_oob_c_192 != NULL)) { 6919 c_192 = connection->classic_oob_c_192; 6920 if (connection->classic_oob_r_192 != NULL) { 6921 r_192 = connection->classic_oob_r_192; 6922 } 6923 } 6924 6925 // assess security 6926 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6927 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6928 if (need_level_4 && !can_reach_level_4){ 6929 log_info("Level 4 required, but not possible -> abort"); 6930 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6931 // send oob negative reply 6932 c_256 = NULL; 6933 c_192 = NULL; 6934 } 6935 6936 // Reply 6937 if (c_256 != zero) { 6938 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6939 } else if (c_192 != zero){ 6940 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6941 } else { 6942 hci_stack->classic_oob_con_handle = connection->con_handle; 6943 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6944 } 6945 return true; 6946 } 6947 #endif 6948 6949 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6950 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6951 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6952 return true; 6953 } 6954 6955 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6956 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6957 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6958 return true; 6959 } 6960 6961 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6962 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6963 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6964 return true; 6965 } 6966 6967 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6968 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6969 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6970 connection->state = SENT_DISCONNECT; 6971 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6972 return true; 6973 } 6974 6975 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6976 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6977 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6978 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6979 return true; 6980 } 6981 6982 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6983 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6984 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6985 return true; 6986 } 6987 6988 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6989 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6990 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6991 return true; 6992 } 6993 6994 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6995 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6996 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6997 return true; 6998 } 6999 7000 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7001 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7002 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7003 return true; 7004 } 7005 7006 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7007 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7008 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7009 return true; 7010 } 7011 #endif 7012 7013 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7014 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7015 #ifdef ENABLE_CLASSIC 7016 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7017 #endif 7018 if (connection->state != SENT_DISCONNECT){ 7019 connection->state = SENT_DISCONNECT; 7020 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7021 return true; 7022 } 7023 } 7024 7025 #ifdef ENABLE_CLASSIC 7026 uint16_t sniff_min_interval; 7027 switch (connection->sniff_min_interval){ 7028 case 0: 7029 break; 7030 case 0xffff: 7031 connection->sniff_min_interval = 0; 7032 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7033 return true; 7034 default: 7035 sniff_min_interval = connection->sniff_min_interval; 7036 connection->sniff_min_interval = 0; 7037 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7038 return true; 7039 } 7040 7041 if (connection->sniff_subrating_max_latency != 0xffff){ 7042 uint16_t max_latency = connection->sniff_subrating_max_latency; 7043 connection->sniff_subrating_max_latency = 0; 7044 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7045 return true; 7046 } 7047 7048 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7049 uint8_t service_type = (uint8_t) connection->qos_service_type; 7050 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7051 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); 7052 return true; 7053 } 7054 7055 if (connection->request_role != HCI_ROLE_INVALID){ 7056 hci_role_t role = connection->request_role; 7057 connection->request_role = HCI_ROLE_INVALID; 7058 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7059 return true; 7060 } 7061 #endif 7062 7063 if (connection->gap_connection_tasks != 0){ 7064 #ifdef ENABLE_CLASSIC 7065 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7066 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7067 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7068 return true; 7069 } 7070 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7071 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7072 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7073 return true; 7074 } 7075 #endif 7076 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7077 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7078 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7079 return true; 7080 } 7081 #ifdef ENABLE_BLE 7082 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7083 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7084 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7085 return true; 7086 } 7087 #endif 7088 } 7089 7090 #ifdef ENABLE_BLE 7091 switch (connection->le_con_parameter_update_state){ 7092 // response to L2CAP CON PARAMETER UPDATE REQUEST 7093 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7094 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7095 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7096 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7097 0x0000, 0xffff); 7098 return true; 7099 case CON_PARAMETER_UPDATE_REPLY: 7100 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7101 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7102 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7103 0x0000, 0xffff); 7104 return true; 7105 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7106 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7107 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7108 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7109 return true; 7110 default: 7111 break; 7112 } 7113 if (connection->le_phy_update_all_phys != 0xffu){ 7114 uint8_t all_phys = connection->le_phy_update_all_phys; 7115 connection->le_phy_update_all_phys = 0xff; 7116 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); 7117 return true; 7118 } 7119 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7120 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7121 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7122 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7123 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7124 return true; 7125 } 7126 #endif 7127 #endif 7128 } 7129 return false; 7130 } 7131 7132 static void hci_run(void){ 7133 7134 // stack state sub statemachines 7135 switch (hci_stack->state) { 7136 case HCI_STATE_INITIALIZING: 7137 hci_initializing_run(); 7138 break; 7139 case HCI_STATE_HALTING: 7140 hci_halting_run(); 7141 break; 7142 case HCI_STATE_FALLING_ASLEEP: 7143 hci_falling_asleep_run(); 7144 break; 7145 default: 7146 break; 7147 } 7148 7149 // allow to run after initialization to working transition 7150 if (hci_stack->state != HCI_STATE_WORKING){ 7151 return; 7152 } 7153 7154 bool done; 7155 7156 // send continuation fragments first, as they block the prepared packet buffer 7157 done = hci_run_acl_fragments(); 7158 if (done) return; 7159 7160 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7161 done = hci_run_iso_fragments(); 7162 if (done) return; 7163 #endif 7164 7165 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7166 // send host num completed packets next as they don't require num_cmd_packets > 0 7167 if (!hci_can_send_comand_packet_transport()) return; 7168 if (hci_stack->host_completed_packets){ 7169 hci_host_num_completed_packets(); 7170 return; 7171 } 7172 #endif 7173 7174 if (!hci_can_send_command_packet_now()) return; 7175 7176 // global/non-connection oriented commands 7177 7178 7179 #ifdef ENABLE_CLASSIC 7180 // general gap classic 7181 done = hci_run_general_gap_classic(); 7182 if (done) return; 7183 #endif 7184 7185 #ifdef ENABLE_BLE 7186 // general gap le 7187 done = hci_run_general_gap_le(); 7188 if (done) return; 7189 7190 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7191 // ISO related tasks, e.g. BIG create/terminate/sync 7192 done = hci_run_iso_tasks(); 7193 if (done) return; 7194 #endif 7195 #endif 7196 7197 // send pending HCI commands 7198 hci_run_general_pending_commands(); 7199 } 7200 7201 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7202 // house-keeping 7203 7204 #ifdef ENABLE_CLASSIC 7205 bd_addr_t addr; 7206 hci_connection_t * conn; 7207 #endif 7208 #ifdef ENABLE_LE_CENTRAL 7209 uint8_t initiator_filter_policy; 7210 #endif 7211 7212 uint16_t opcode = little_endian_read_16(packet, 0); 7213 switch (opcode) { 7214 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7215 hci_stack->loopback_mode = packet[3]; 7216 break; 7217 7218 #ifdef ENABLE_CLASSIC 7219 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7220 reverse_bd_addr(&packet[3], addr); 7221 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7222 7223 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7224 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7225 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7226 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7227 } 7228 7229 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7230 if (!conn) { 7231 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7232 if (!conn) { 7233 // notify client that alloc failed 7234 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7235 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7236 } 7237 conn->state = SEND_CREATE_CONNECTION; 7238 conn->role = HCI_ROLE_MASTER; 7239 } 7240 7241 log_info("conn state %u", conn->state); 7242 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7243 switch (conn->state) { 7244 // if connection active exists 7245 case OPEN: 7246 // and OPEN, emit connection complete command 7247 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7248 // packet not sent to controller 7249 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7250 case RECEIVED_DISCONNECTION_COMPLETE: 7251 // create connection triggered in disconnect complete event, let's do it now 7252 break; 7253 case SEND_CREATE_CONNECTION: 7254 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7255 if (hci_classic_operation_active()){ 7256 return ERROR_CODE_SUCCESS; 7257 } 7258 #endif 7259 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7260 break; 7261 default: 7262 // otherwise, just ignore as it is already in the open process 7263 // packet not sent to controller 7264 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7265 } 7266 conn->state = SENT_CREATE_CONNECTION; 7267 7268 // track outgoing connection 7269 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7270 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7271 break; 7272 7273 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7274 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7275 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7276 if (conn == NULL) { 7277 // neither SCO nor ACL connection for con handle 7278 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7279 } else { 7280 switch (conn->address_type){ 7281 case BD_ADDR_TYPE_ACL: 7282 // assert SCO connection does not exit 7283 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7284 return ERROR_CODE_COMMAND_DISALLOWED; 7285 } 7286 // allocate connection struct 7287 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO); 7288 if (!conn) { 7289 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7290 } 7291 conn->role = HCI_ROLE_MASTER; 7292 break; 7293 case BD_ADDR_TYPE_SCO: 7294 // update of existing SCO connection 7295 break; 7296 default: 7297 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7298 } 7299 } 7300 7301 // conn refers to hci connection of type sco now 7302 7303 conn->state = SENT_CREATE_CONNECTION; 7304 7305 // track outgoing connection to handle command status with error 7306 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7307 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7308 7309 // setup_synchronous_connection? Voice setting at offset 22 7310 // TODO: compare to current setting if sco connection already active 7311 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7312 break; 7313 7314 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7315 // get SCO connection 7316 reverse_bd_addr(&packet[3], addr); 7317 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7318 if (conn == NULL){ 7319 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7320 } 7321 7322 conn->state = ACCEPTED_CONNECTION_REQUEST; 7323 7324 // track outgoing connection to handle command status with error 7325 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7326 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7327 7328 // accept_synchronous_connection? Voice setting at offset 18 7329 // TODO: compare to current setting if sco connection already active 7330 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7331 break; 7332 #endif 7333 #endif 7334 7335 #ifdef ENABLE_BLE 7336 #ifdef ENABLE_LE_CENTRAL 7337 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7338 // white list used? 7339 initiator_filter_policy = packet[7]; 7340 switch (initiator_filter_policy) { 7341 case 0: 7342 // whitelist not used 7343 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7344 break; 7345 case 1: 7346 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7347 break; 7348 default: 7349 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7350 break; 7351 } 7352 // track outgoing connection 7353 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7354 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7355 break; 7356 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7357 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7358 // white list used? 7359 initiator_filter_policy = packet[3]; 7360 switch (initiator_filter_policy) { 7361 case 0: 7362 // whitelist not used 7363 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7364 break; 7365 case 1: 7366 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7367 break; 7368 default: 7369 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7370 break; 7371 } 7372 // track outgoing connection 7373 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7374 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7375 break; 7376 #endif 7377 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7378 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7379 break; 7380 #endif 7381 #endif /* ENABLE_BLE */ 7382 default: 7383 break; 7384 } 7385 7386 hci_stack->num_cmd_packets--; 7387 7388 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7389 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7390 if (err != 0){ 7391 return ERROR_CODE_HARDWARE_FAILURE; 7392 } 7393 return ERROR_CODE_SUCCESS; 7394 } 7395 7396 // disconnect because of security block 7397 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7398 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7399 if (!connection) return; 7400 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7401 } 7402 7403 7404 // Configure Secure Simple Pairing 7405 7406 #ifdef ENABLE_CLASSIC 7407 7408 // enable will enable SSP during init 7409 void gap_ssp_set_enable(int enable){ 7410 hci_stack->ssp_enable = enable; 7411 } 7412 7413 static int hci_local_ssp_activated(void){ 7414 return gap_ssp_supported() && hci_stack->ssp_enable; 7415 } 7416 7417 // if set, BTstack will respond to io capability request using authentication requirement 7418 void gap_ssp_set_io_capability(int io_capability){ 7419 hci_stack->ssp_io_capability = io_capability; 7420 } 7421 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7422 hci_stack->ssp_authentication_requirement = authentication_requirement; 7423 } 7424 7425 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7426 void gap_ssp_set_auto_accept(int auto_accept){ 7427 hci_stack->ssp_auto_accept = auto_accept; 7428 } 7429 7430 void gap_secure_connections_enable(bool enable){ 7431 hci_stack->secure_connections_enable = enable; 7432 } 7433 bool gap_secure_connections_active(void){ 7434 return hci_stack->secure_connections_active; 7435 } 7436 7437 #endif 7438 7439 // va_list part of hci_send_cmd 7440 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7441 if (!hci_can_send_command_packet_now()){ 7442 log_error("hci_send_cmd called but cannot send packet now"); 7443 return ERROR_CODE_COMMAND_DISALLOWED; 7444 } 7445 7446 // for HCI INITIALIZATION 7447 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7448 hci_stack->last_cmd_opcode = cmd->opcode; 7449 7450 hci_reserve_packet_buffer(); 7451 uint8_t * packet = hci_stack->hci_packet_buffer; 7452 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7453 uint8_t status = hci_send_cmd_packet(packet, size); 7454 7455 // release packet buffer on error or for synchronous transport implementations 7456 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7457 hci_release_packet_buffer(); 7458 hci_emit_transport_packet_sent(); 7459 } 7460 7461 return status; 7462 } 7463 7464 /** 7465 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7466 */ 7467 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7468 va_list argptr; 7469 va_start(argptr, cmd); 7470 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7471 va_end(argptr); 7472 return status; 7473 } 7474 7475 // Create various non-HCI events. 7476 // TODO: generalize, use table similar to hci_create_command 7477 7478 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7479 // dump packet 7480 if (dump) { 7481 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7482 } 7483 7484 // dispatch to all event handlers 7485 btstack_linked_list_iterator_t it; 7486 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7487 while (btstack_linked_list_iterator_has_next(&it)){ 7488 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7489 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7490 } 7491 } 7492 7493 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7494 if (!hci_stack->acl_packet_handler) return; 7495 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7496 } 7497 7498 #ifdef ENABLE_CLASSIC 7499 static void hci_notify_if_sco_can_send_now(void){ 7500 // notify SCO sender if waiting 7501 if (!hci_stack->sco_waiting_for_can_send_now) return; 7502 if (hci_can_send_sco_packet_now()){ 7503 hci_stack->sco_waiting_for_can_send_now = 0; 7504 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7505 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7506 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7507 } 7508 } 7509 7510 // parsing end emitting has been merged to reduce code size 7511 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7512 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7513 7514 uint8_t * eir_data; 7515 ad_context_t context; 7516 const uint8_t * name; 7517 uint8_t name_len; 7518 7519 if (size < 3) return; 7520 7521 int event_type = hci_event_packet_get_type(packet); 7522 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7523 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7524 7525 switch (event_type){ 7526 case HCI_EVENT_INQUIRY_RESULT: 7527 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7528 if (size != (3 + (num_responses * 14))) return; 7529 break; 7530 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7531 if (size != 257) return; 7532 if (num_responses != 1) return; 7533 break; 7534 default: 7535 return; 7536 } 7537 7538 // event[1] is set at the end 7539 int i; 7540 for (i=0; i<num_responses;i++){ 7541 memset(event, 0, sizeof(event)); 7542 event[0] = GAP_EVENT_INQUIRY_RESULT; 7543 uint8_t event_size = 27; // if name is not set by EIR 7544 7545 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7546 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7547 (void)memcpy(&event[9], 7548 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7549 3); // class of device 7550 (void)memcpy(&event[12], 7551 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7552 2); // clock offset 7553 7554 switch (event_type){ 7555 case HCI_EVENT_INQUIRY_RESULT: 7556 // 14,15,16,17 = 0, size 18 7557 break; 7558 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7559 event[14] = 1; 7560 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7561 // 16,17 = 0, size 18 7562 break; 7563 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7564 event[14] = 1; 7565 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7566 // EIR packets only contain a single inquiry response 7567 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7568 name = NULL; 7569 // Iterate over EIR data 7570 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7571 uint8_t data_type = ad_iterator_get_data_type(&context); 7572 uint8_t data_size = ad_iterator_get_data_len(&context); 7573 const uint8_t * data = ad_iterator_get_data(&context); 7574 // Prefer Complete Local Name over Shortened Local Name 7575 switch (data_type){ 7576 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7577 if (name) continue; 7578 /* fall through */ 7579 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7580 name = data; 7581 name_len = data_size; 7582 break; 7583 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7584 if (data_size != 8) break; 7585 event[16] = 1; 7586 memcpy(&event[17], data, 8); 7587 break; 7588 default: 7589 break; 7590 } 7591 } 7592 if (name){ 7593 event[25] = 1; 7594 // truncate name if needed 7595 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7596 event[26] = len; 7597 (void)memcpy(&event[27], name, len); 7598 event_size += len; 7599 } 7600 break; 7601 default: 7602 return; 7603 } 7604 event[1] = event_size - 2; 7605 hci_emit_event(event, event_size, 1); 7606 } 7607 } 7608 #endif 7609 7610 void hci_emit_state(void){ 7611 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7612 uint8_t event[3]; 7613 event[0] = BTSTACK_EVENT_STATE; 7614 event[1] = sizeof(event) - 2u; 7615 event[2] = hci_stack->state; 7616 hci_emit_event(event, sizeof(event), 1); 7617 } 7618 7619 #ifdef ENABLE_CLASSIC 7620 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7621 uint8_t event[13]; 7622 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7623 event[1] = sizeof(event) - 2; 7624 event[2] = status; 7625 little_endian_store_16(event, 3, con_handle); 7626 reverse_bd_addr(address, &event[5]); 7627 event[11] = 1; // ACL connection 7628 event[12] = 0; // encryption disabled 7629 hci_emit_event(event, sizeof(event), 1); 7630 } 7631 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7632 if (disable_l2cap_timeouts) return; 7633 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7634 uint8_t event[4]; 7635 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7636 event[1] = sizeof(event) - 2; 7637 little_endian_store_16(event, 2, conn->con_handle); 7638 hci_emit_event(event, sizeof(event), 1); 7639 } 7640 #endif 7641 7642 #ifdef ENABLE_BLE 7643 #ifdef ENABLE_LE_CENTRAL 7644 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){ 7645 uint8_t event[21]; 7646 event[0] = HCI_EVENT_LE_META; 7647 event[1] = sizeof(event) - 2u; 7648 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7649 event[3] = status; 7650 little_endian_store_16(event, 4, con_handle); 7651 event[6] = 0; // TODO: role 7652 event[7] = address_type; 7653 reverse_bd_addr(address, &event[8]); 7654 little_endian_store_16(event, 14, 0); // interval 7655 little_endian_store_16(event, 16, 0); // latency 7656 little_endian_store_16(event, 18, 0); // supervision timeout 7657 event[20] = 0; // master clock accuracy 7658 hci_emit_event(event, sizeof(event), 1); 7659 } 7660 #endif 7661 #endif 7662 7663 static void hci_emit_transport_packet_sent(void){ 7664 // notify upper stack that it might be possible to send again 7665 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7666 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7667 } 7668 7669 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7670 uint8_t event[6]; 7671 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7672 event[1] = sizeof(event) - 2u; 7673 event[2] = 0; // status = OK 7674 little_endian_store_16(event, 3, con_handle); 7675 event[5] = reason; 7676 hci_emit_event(event, sizeof(event), 1); 7677 } 7678 7679 static void hci_emit_nr_connections_changed(void){ 7680 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7681 uint8_t event[3]; 7682 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7683 event[1] = sizeof(event) - 2u; 7684 event[2] = nr_hci_connections(); 7685 hci_emit_event(event, sizeof(event), 1); 7686 } 7687 7688 static void hci_emit_hci_open_failed(void){ 7689 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7690 uint8_t event[2]; 7691 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7692 event[1] = sizeof(event) - 2u; 7693 hci_emit_event(event, sizeof(event), 1); 7694 } 7695 7696 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7697 log_info("hci_emit_dedicated_bonding_result %u ", status); 7698 uint8_t event[9]; 7699 int pos = 0; 7700 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7701 event[pos++] = sizeof(event) - 2u; 7702 event[pos++] = status; 7703 reverse_bd_addr(address, &event[pos]); 7704 hci_emit_event(event, sizeof(event), 1); 7705 } 7706 7707 7708 #ifdef ENABLE_CLASSIC 7709 7710 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7711 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7712 uint8_t event[5]; 7713 int pos = 0; 7714 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7715 event[pos++] = sizeof(event) - 2; 7716 little_endian_store_16(event, 2, con_handle); 7717 pos += 2; 7718 event[pos++] = level; 7719 hci_emit_event(event, sizeof(event), 1); 7720 } 7721 7722 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7723 if (!connection) return LEVEL_0; 7724 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7725 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7726 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7727 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7728 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7729 // LEVEL 4 always requires 128 bit encrytion key size 7730 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7731 security_level = LEVEL_3; 7732 } 7733 return security_level; 7734 } 7735 7736 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7737 uint8_t event[4]; 7738 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7739 event[1] = sizeof(event) - 2; 7740 event[2] = discoverable; 7741 event[3] = connectable; 7742 hci_emit_event(event, sizeof(event), 1); 7743 } 7744 7745 // query if remote side supports eSCO 7746 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7747 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7748 if (!connection) return false; 7749 return (connection->remote_supported_features[0] & 1) != 0; 7750 } 7751 7752 static bool hci_ssp_supported(hci_connection_t * connection){ 7753 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7754 return (connection->bonding_flags & mask) == mask; 7755 } 7756 7757 // query if remote side supports SSP 7758 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7759 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7760 if (!connection) return false; 7761 return hci_ssp_supported(connection) ? 1 : 0; 7762 } 7763 7764 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7765 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7766 } 7767 7768 /** 7769 * Check if remote supported features query has completed 7770 */ 7771 bool hci_remote_features_available(hci_con_handle_t handle){ 7772 hci_connection_t * connection = hci_connection_for_handle(handle); 7773 if (!connection) return false; 7774 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7775 } 7776 7777 /** 7778 * Trigger remote supported features query 7779 */ 7780 7781 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7782 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7783 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7784 } 7785 } 7786 7787 void hci_remote_features_query(hci_con_handle_t con_handle){ 7788 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7789 if (!connection) return; 7790 hci_trigger_remote_features_for_connection(connection); 7791 hci_run(); 7792 } 7793 7794 // GAP API 7795 /** 7796 * @bbrief enable/disable bonding. default is enabled 7797 * @praram enabled 7798 */ 7799 void gap_set_bondable_mode(int enable){ 7800 hci_stack->bondable = enable ? 1 : 0; 7801 } 7802 /** 7803 * @brief Get bondable mode. 7804 * @return 1 if bondable 7805 */ 7806 int gap_get_bondable_mode(void){ 7807 return hci_stack->bondable; 7808 } 7809 7810 /** 7811 * @brief map link keys to security levels 7812 */ 7813 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7814 switch (link_key_type){ 7815 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7816 return LEVEL_4; 7817 case COMBINATION_KEY: 7818 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7819 return LEVEL_3; 7820 default: 7821 return LEVEL_2; 7822 } 7823 } 7824 7825 /** 7826 * @brief map link keys to secure connection yes/no 7827 */ 7828 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7829 switch (link_key_type){ 7830 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7831 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7832 return true; 7833 default: 7834 return false; 7835 } 7836 } 7837 7838 /** 7839 * @brief map link keys to authenticated 7840 */ 7841 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7842 switch (link_key_type){ 7843 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7844 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7845 return true; 7846 default: 7847 return false; 7848 } 7849 } 7850 7851 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7852 log_info("gap_mitm_protection_required_for_security_level %u", level); 7853 return level > LEVEL_2; 7854 } 7855 7856 /** 7857 * @brief get current security level 7858 */ 7859 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7860 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7861 if (!connection) return LEVEL_0; 7862 return gap_security_level_for_connection(connection); 7863 } 7864 7865 /** 7866 * @brief request connection to device to 7867 * @result GAP_AUTHENTICATION_RESULT 7868 */ 7869 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7870 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7871 if (!connection){ 7872 hci_emit_security_level(con_handle, LEVEL_0); 7873 return; 7874 } 7875 7876 btstack_assert(hci_is_le_connection(connection) == false); 7877 7878 // 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) 7879 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7880 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7881 requested_level = LEVEL_4; 7882 } 7883 7884 gap_security_level_t current_level = gap_security_level(con_handle); 7885 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7886 requested_level, connection->requested_security_level, current_level); 7887 7888 // authentication active if authentication request was sent or planned level > 0 7889 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7890 if (authentication_active){ 7891 // authentication already active 7892 if (connection->requested_security_level < requested_level){ 7893 // increase requested level as new level is higher 7894 // TODO: handle re-authentication when done 7895 connection->requested_security_level = requested_level; 7896 } 7897 } else { 7898 // no request active, notify if security sufficient 7899 if (requested_level <= current_level){ 7900 hci_emit_security_level(con_handle, current_level); 7901 return; 7902 } 7903 7904 // store request 7905 connection->requested_security_level = requested_level; 7906 7907 // start to authenticate connection 7908 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7909 7910 // request remote features if not already active, also trigger hci_run 7911 hci_remote_features_query(con_handle); 7912 } 7913 } 7914 7915 /** 7916 * @brief start dedicated bonding with device. disconnect after bonding 7917 * @param device 7918 * @param request MITM protection 7919 * @result GAP_DEDICATED_BONDING_COMPLETE 7920 */ 7921 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7922 7923 // create connection state machine 7924 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7925 7926 if (!connection){ 7927 return BTSTACK_MEMORY_ALLOC_FAILED; 7928 } 7929 7930 // delete linkn key 7931 gap_drop_link_key_for_bd_addr(device); 7932 7933 // configure LEVEL_2/3, dedicated bonding 7934 connection->state = SEND_CREATE_CONNECTION; 7935 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7936 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7937 connection->bonding_flags = BONDING_DEDICATED; 7938 7939 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7940 7941 // handle: connnection failure (connection complete != ok) 7942 // handle: authentication failure 7943 // handle: disconnect on done 7944 7945 hci_run(); 7946 7947 return 0; 7948 } 7949 7950 void gap_set_local_name(const char * local_name){ 7951 hci_stack->local_name = local_name; 7952 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7953 // also update EIR if not set by user 7954 if (hci_stack->eir_data == NULL){ 7955 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7956 } 7957 hci_run(); 7958 } 7959 #endif 7960 7961 7962 #ifdef ENABLE_BLE 7963 7964 #ifdef ENABLE_LE_CENTRAL 7965 void gap_start_scan(void){ 7966 hci_stack->le_scanning_enabled = true; 7967 hci_run(); 7968 } 7969 7970 void gap_stop_scan(void){ 7971 hci_stack->le_scanning_enabled = false; 7972 hci_run(); 7973 } 7974 7975 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7976 hci_stack->le_scan_type = scan_type; 7977 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7978 hci_stack->le_scan_interval = scan_interval; 7979 hci_stack->le_scan_window = scan_window; 7980 hci_stack->le_scanning_param_update = true; 7981 hci_run(); 7982 } 7983 7984 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7985 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7986 } 7987 7988 void gap_set_scan_duplicate_filter(bool enabled){ 7989 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 7990 } 7991 7992 void gap_set_scan_phys(uint8_t phys){ 7993 // LE Coded and LE 1M PHY 7994 hci_stack->le_scan_phys = phys & 0x05; 7995 } 7996 7997 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7998 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7999 if (!conn){ 8000 // disallow if le connection is already outgoing 8001 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8002 log_error("le connection already active"); 8003 return ERROR_CODE_COMMAND_DISALLOWED; 8004 } 8005 8006 log_info("gap_connect: no connection exists yet, creating context"); 8007 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 8008 if (!conn){ 8009 // notify client that alloc failed 8010 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8011 log_info("gap_connect: failed to alloc hci_connection_t"); 8012 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8013 } 8014 8015 // set le connecting state 8016 if (hci_is_le_connection_type(addr_type)){ 8017 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8018 } 8019 8020 conn->state = SEND_CREATE_CONNECTION; 8021 log_info("gap_connect: send create connection next"); 8022 hci_run(); 8023 return ERROR_CODE_SUCCESS; 8024 } 8025 8026 if (!hci_is_le_connection(conn) || 8027 (conn->state == SEND_CREATE_CONNECTION) || 8028 (conn->state == SENT_CREATE_CONNECTION)) { 8029 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8030 log_error("gap_connect: classic connection or connect is already being created"); 8031 return GATT_CLIENT_IN_WRONG_STATE; 8032 } 8033 8034 // check if connection was just disconnected 8035 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8036 log_info("gap_connect: send create connection (again)"); 8037 conn->state = SEND_CREATE_CONNECTION; 8038 hci_run(); 8039 return ERROR_CODE_SUCCESS; 8040 } 8041 8042 log_info("gap_connect: context exists with state %u", conn->state); 8043 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8044 hci_run(); 8045 return ERROR_CODE_SUCCESS; 8046 } 8047 8048 // @assumption: only a single outgoing LE Connection exists 8049 static hci_connection_t * gap_get_outgoing_connection(void){ 8050 btstack_linked_item_t *it; 8051 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8052 hci_connection_t * conn = (hci_connection_t *) it; 8053 if (!hci_is_le_connection(conn)) continue; 8054 switch (conn->state){ 8055 case SEND_CREATE_CONNECTION: 8056 case SENT_CREATE_CONNECTION: 8057 return conn; 8058 default: 8059 break; 8060 }; 8061 } 8062 return NULL; 8063 } 8064 8065 uint8_t gap_connect_cancel(void){ 8066 hci_connection_t * conn; 8067 switch (hci_stack->le_connecting_request){ 8068 case LE_CONNECTING_IDLE: 8069 break; 8070 case LE_CONNECTING_WHITELIST: 8071 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8072 hci_run(); 8073 break; 8074 case LE_CONNECTING_DIRECT: 8075 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8076 conn = gap_get_outgoing_connection(); 8077 if (conn == NULL){ 8078 hci_run(); 8079 } else { 8080 switch (conn->state){ 8081 case SEND_CREATE_CONNECTION: 8082 // skip sending create connection and emit event instead 8083 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8084 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8085 btstack_memory_hci_connection_free( conn ); 8086 break; 8087 case SENT_CREATE_CONNECTION: 8088 // let hci_run_general_gap_le cancel outgoing connection 8089 hci_run(); 8090 break; 8091 default: 8092 break; 8093 } 8094 } 8095 break; 8096 default: 8097 btstack_unreachable(); 8098 break; 8099 } 8100 return ERROR_CODE_SUCCESS; 8101 } 8102 8103 /** 8104 * @brief Set connection parameters for outgoing connections 8105 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8106 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8107 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8108 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8109 * @param conn_latency, default: 4 8110 * @param supervision_timeout (unit: 10ms), default: 720 ms 8111 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8112 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8113 */ 8114 8115 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8116 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8117 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8118 hci_stack->le_connection_scan_interval = conn_scan_interval; 8119 hci_stack->le_connection_scan_window = conn_scan_window; 8120 hci_stack->le_connection_interval_min = conn_interval_min; 8121 hci_stack->le_connection_interval_max = conn_interval_max; 8122 hci_stack->le_connection_latency = conn_latency; 8123 hci_stack->le_supervision_timeout = supervision_timeout; 8124 hci_stack->le_minimum_ce_length = min_ce_length; 8125 hci_stack->le_maximum_ce_length = max_ce_length; 8126 } 8127 8128 void gap_set_connection_phys(uint8_t phys){ 8129 // LE Coded, LE 1M, LE 2M PHY 8130 hci_stack->le_connection_phys = phys & 7; 8131 } 8132 8133 #endif 8134 8135 /** 8136 * @brief Updates the connection parameters for a given LE connection 8137 * @param handle 8138 * @param conn_interval_min (unit: 1.25ms) 8139 * @param conn_interval_max (unit: 1.25ms) 8140 * @param conn_latency 8141 * @param supervision_timeout (unit: 10ms) 8142 * @return 0 if ok 8143 */ 8144 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8145 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8146 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8147 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8148 connection->le_conn_interval_min = conn_interval_min; 8149 connection->le_conn_interval_max = conn_interval_max; 8150 connection->le_conn_latency = conn_latency; 8151 connection->le_supervision_timeout = supervision_timeout; 8152 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8153 hci_run(); 8154 return 0; 8155 } 8156 8157 /** 8158 * @brief Request an update of the connection parameter for a given LE connection 8159 * @param handle 8160 * @param conn_interval_min (unit: 1.25ms) 8161 * @param conn_interval_max (unit: 1.25ms) 8162 * @param conn_latency 8163 * @param supervision_timeout (unit: 10ms) 8164 * @return 0 if ok 8165 */ 8166 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8167 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8168 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8169 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8170 connection->le_conn_interval_min = conn_interval_min; 8171 connection->le_conn_interval_max = conn_interval_max; 8172 connection->le_conn_latency = conn_latency; 8173 connection->le_supervision_timeout = supervision_timeout; 8174 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8175 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8176 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8177 return 0; 8178 } 8179 8180 #ifdef ENABLE_LE_PERIPHERAL 8181 8182 /** 8183 * @brief Set Advertisement Data 8184 * @param advertising_data_length 8185 * @param advertising_data (max 31 octets) 8186 * @note data is not copied, pointer has to stay valid 8187 */ 8188 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8189 hci_stack->le_advertisements_data_len = advertising_data_length; 8190 hci_stack->le_advertisements_data = advertising_data; 8191 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8192 hci_run(); 8193 } 8194 8195 /** 8196 * @brief Set Scan Response Data 8197 * @param advertising_data_length 8198 * @param advertising_data (max 31 octets) 8199 * @note data is not copied, pointer has to stay valid 8200 */ 8201 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8202 hci_stack->le_scan_response_data_len = scan_response_data_length; 8203 hci_stack->le_scan_response_data = scan_response_data; 8204 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8205 hci_run(); 8206 } 8207 8208 /** 8209 * @brief Set Advertisement Parameters 8210 * @param adv_int_min 8211 * @param adv_int_max 8212 * @param adv_type 8213 * @param direct_address_type 8214 * @param direct_address 8215 * @param channel_map 8216 * @param filter_policy 8217 * 8218 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8219 */ 8220 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8221 uint8_t direct_address_typ, bd_addr_t direct_address, 8222 uint8_t channel_map, uint8_t filter_policy) { 8223 8224 hci_stack->le_advertisements_interval_min = adv_int_min; 8225 hci_stack->le_advertisements_interval_max = adv_int_max; 8226 hci_stack->le_advertisements_type = adv_type; 8227 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8228 hci_stack->le_advertisements_channel_map = channel_map; 8229 hci_stack->le_advertisements_filter_policy = filter_policy; 8230 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8231 6); 8232 8233 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8234 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8235 hci_run(); 8236 } 8237 8238 /** 8239 * @brief Enable/Disable Advertisements 8240 * @param enabled 8241 */ 8242 void gap_advertisements_enable(int enabled){ 8243 if (enabled == 0){ 8244 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8245 } else { 8246 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8247 } 8248 hci_update_advertisements_enabled_for_current_roles(); 8249 hci_run(); 8250 } 8251 8252 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8253 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8254 btstack_linked_list_iterator_t it; 8255 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8256 while (btstack_linked_list_iterator_has_next(&it)){ 8257 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8258 if ( item->advertising_handle == advertising_handle ) { 8259 return item; 8260 } 8261 } 8262 return NULL; 8263 } 8264 8265 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8266 // find free advertisement handle 8267 uint8_t advertisement_handle; 8268 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8269 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8270 } 8271 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8272 // clear 8273 memset(storage, 0, sizeof(le_advertising_set_t)); 8274 // copy params 8275 storage->advertising_handle = advertisement_handle; 8276 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8277 // add to list 8278 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8279 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8280 *out_advertising_handle = advertisement_handle; 8281 // set tasks and start 8282 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8283 hci_run(); 8284 return ERROR_CODE_SUCCESS; 8285 } 8286 8287 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8288 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8289 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8290 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8291 // set tasks and start 8292 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8293 hci_run(); 8294 return ERROR_CODE_SUCCESS; 8295 } 8296 8297 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8298 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8299 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8300 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8301 return ERROR_CODE_SUCCESS; 8302 } 8303 8304 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8305 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8306 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8307 memcpy(advertising_set->random_address, random_address, 6); 8308 // set tasks and start 8309 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8310 hci_run(); 8311 return ERROR_CODE_SUCCESS; 8312 } 8313 8314 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8315 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8316 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8317 advertising_set->adv_data = advertising_data; 8318 advertising_set->adv_data_len = advertising_data_length; 8319 // set tasks and start 8320 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8321 hci_run(); 8322 return ERROR_CODE_SUCCESS; 8323 } 8324 8325 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){ 8326 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8327 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8328 advertising_set->scan_data = scan_response_data; 8329 advertising_set->scan_data_len = scan_response_data_length; 8330 // set tasks and start 8331 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8332 hci_run(); 8333 return ERROR_CODE_SUCCESS; 8334 } 8335 8336 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8337 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8338 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8339 advertising_set->enable_timeout = timeout; 8340 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8341 // set tasks and start 8342 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8343 hci_run(); 8344 return ERROR_CODE_SUCCESS; 8345 } 8346 8347 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8348 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8349 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8350 // set tasks and start 8351 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8352 hci_run(); 8353 return ERROR_CODE_SUCCESS; 8354 } 8355 8356 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8357 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8358 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8359 // set tasks and start 8360 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8361 hci_run(); 8362 return ERROR_CODE_SUCCESS; 8363 } 8364 8365 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8366 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8367 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8368 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8369 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8370 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8371 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8372 // set tasks and start 8373 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8374 hci_run(); 8375 return ERROR_CODE_SUCCESS; 8376 } 8377 8378 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8379 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8380 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8381 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8382 return ERROR_CODE_SUCCESS; 8383 } 8384 8385 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8386 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8387 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8388 advertising_set->periodic_data = periodic_data; 8389 advertising_set->periodic_data_len = periodic_data_length; 8390 // set tasks and start 8391 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8392 hci_run(); 8393 return ERROR_CODE_SUCCESS; 8394 } 8395 8396 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8397 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8398 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8399 // set tasks and start 8400 advertising_set->periodic_include_adi = include_adi; 8401 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8402 hci_run(); 8403 return ERROR_CODE_SUCCESS; 8404 } 8405 8406 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8407 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8408 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8409 // set tasks and start 8410 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8411 hci_run(); 8412 return ERROR_CODE_SUCCESS; 8413 } 8414 8415 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8416 hci_stack->le_past_mode = mode; 8417 hci_stack->le_past_skip = skip; 8418 hci_stack->le_past_sync_timeout = sync_timeout; 8419 hci_stack->le_past_cte_type = cte_type; 8420 hci_stack->le_past_set_default_params = true; 8421 hci_run(); 8422 return ERROR_CODE_SUCCESS; 8423 } 8424 8425 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8426 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8427 if (hci_connection == NULL){ 8428 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8429 } 8430 hci_connection->le_past_sync_handle = sync_handle; 8431 hci_connection->le_past_service_data = service_data; 8432 hci_run(); 8433 return ERROR_CODE_SUCCESS; 8434 } 8435 8436 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8437 8438 #endif 8439 8440 #endif 8441 8442 void hci_le_set_own_address_type(uint8_t own_address_type){ 8443 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8444 if (own_address_type == hci_stack->le_own_addr_type) return; 8445 hci_stack->le_own_addr_type = own_address_type; 8446 8447 #ifdef ENABLE_LE_PERIPHERAL 8448 // update advertisement parameters, too 8449 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8450 hci_run(); 8451 #endif 8452 #ifdef ENABLE_LE_CENTRAL 8453 // note: we don't update scan parameters or modify ongoing connection attempts 8454 #endif 8455 } 8456 8457 void hci_le_random_address_set(const bd_addr_t random_address){ 8458 memcpy(hci_stack->le_random_address, random_address, 6); 8459 hci_stack->le_random_address_set = true; 8460 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8461 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8462 if (hci_extended_advertising_supported()){ 8463 // force advertising set creation for LE Set Advertising Set Random Address 8464 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8465 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8466 } 8467 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8468 } 8469 #endif 8470 hci_run(); 8471 } 8472 8473 #endif 8474 8475 uint8_t gap_disconnect(hci_con_handle_t handle){ 8476 hci_connection_t * conn = hci_connection_for_handle(handle); 8477 if (!conn){ 8478 hci_emit_disconnection_complete(handle, 0); 8479 return 0; 8480 } 8481 // ignore if already disconnected 8482 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8483 return 0; 8484 } 8485 conn->state = SEND_DISCONNECT; 8486 hci_run(); 8487 return 0; 8488 } 8489 8490 int gap_read_rssi(hci_con_handle_t con_handle){ 8491 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8492 if (hci_connection == NULL) return 0; 8493 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8494 hci_run(); 8495 return 1; 8496 } 8497 8498 /** 8499 * @brief Get connection type 8500 * @param con_handle 8501 * @result connection_type 8502 */ 8503 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8504 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8505 if (!conn) return GAP_CONNECTION_INVALID; 8506 switch (conn->address_type){ 8507 case BD_ADDR_TYPE_LE_PUBLIC: 8508 case BD_ADDR_TYPE_LE_RANDOM: 8509 return GAP_CONNECTION_LE; 8510 case BD_ADDR_TYPE_SCO: 8511 return GAP_CONNECTION_SCO; 8512 case BD_ADDR_TYPE_ACL: 8513 return GAP_CONNECTION_ACL; 8514 default: 8515 return GAP_CONNECTION_INVALID; 8516 } 8517 } 8518 8519 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8520 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8521 if (!conn) return HCI_ROLE_INVALID; 8522 return (hci_role_t) conn->role; 8523 } 8524 8525 8526 #ifdef ENABLE_CLASSIC 8527 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8528 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8529 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8530 conn->request_role = role; 8531 hci_run(); 8532 return ERROR_CODE_SUCCESS; 8533 } 8534 #endif 8535 8536 #ifdef ENABLE_BLE 8537 8538 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){ 8539 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8540 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8541 8542 conn->le_phy_update_all_phys = all_phys; 8543 conn->le_phy_update_tx_phys = tx_phys; 8544 conn->le_phy_update_rx_phys = rx_phys; 8545 conn->le_phy_update_phy_options = phy_options; 8546 8547 hci_run(); 8548 8549 return 0; 8550 } 8551 8552 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8553 // check if already in list 8554 btstack_linked_list_iterator_t it; 8555 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8556 while (btstack_linked_list_iterator_has_next(&it)) { 8557 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8558 if (entry->address_type != address_type) { 8559 continue; 8560 } 8561 if (memcmp(entry->address, address, 6) != 0) { 8562 continue; 8563 } 8564 // disallow if already scheduled to add 8565 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8566 return ERROR_CODE_COMMAND_DISALLOWED; 8567 } 8568 // still on controller, but scheduled to remove -> re-add 8569 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8570 return ERROR_CODE_SUCCESS; 8571 } 8572 // alloc and add to list 8573 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8574 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8575 entry->address_type = address_type; 8576 (void)memcpy(entry->address, address, 6); 8577 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8578 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8579 return ERROR_CODE_SUCCESS; 8580 } 8581 8582 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8583 btstack_linked_list_iterator_t it; 8584 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8585 while (btstack_linked_list_iterator_has_next(&it)){ 8586 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8587 if (entry->address_type != address_type) { 8588 continue; 8589 } 8590 if (memcmp(entry->address, address, 6) != 0) { 8591 continue; 8592 } 8593 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8594 // remove from controller if already present 8595 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8596 } else { 8597 // directly remove entry from whitelist 8598 btstack_linked_list_iterator_remove(&it); 8599 btstack_memory_whitelist_entry_free(entry); 8600 } 8601 return ERROR_CODE_SUCCESS; 8602 } 8603 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8604 } 8605 8606 static void hci_whitelist_clear(void){ 8607 btstack_linked_list_iterator_t it; 8608 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8609 while (btstack_linked_list_iterator_has_next(&it)){ 8610 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8611 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8612 // remove from controller if already present 8613 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8614 continue; 8615 } 8616 // directly remove entry from whitelist 8617 btstack_linked_list_iterator_remove(&it); 8618 btstack_memory_whitelist_entry_free(entry); 8619 } 8620 } 8621 8622 /** 8623 * @brief Clear Whitelist 8624 * @return 0 if ok 8625 */ 8626 uint8_t gap_whitelist_clear(void){ 8627 hci_whitelist_clear(); 8628 hci_run(); 8629 return ERROR_CODE_SUCCESS; 8630 } 8631 8632 /** 8633 * @brief Add Device to Whitelist 8634 * @param address_typ 8635 * @param address 8636 * @return 0 if ok 8637 */ 8638 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8639 uint8_t status = hci_whitelist_add(address_type, address); 8640 if (status){ 8641 return status; 8642 } 8643 hci_run(); 8644 return ERROR_CODE_SUCCESS; 8645 } 8646 8647 /** 8648 * @brief Remove Device from Whitelist 8649 * @param address_typ 8650 * @param address 8651 * @return 0 if ok 8652 */ 8653 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8654 uint8_t status = hci_whitelist_remove(address_type, address); 8655 if (status){ 8656 return status; 8657 } 8658 hci_run(); 8659 return ERROR_CODE_SUCCESS; 8660 } 8661 8662 #ifdef ENABLE_LE_CENTRAL 8663 /** 8664 * @brief Connect with Whitelist 8665 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8666 * @return - if ok 8667 */ 8668 uint8_t gap_connect_with_whitelist(void){ 8669 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8670 return ERROR_CODE_COMMAND_DISALLOWED; 8671 } 8672 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8673 hci_run(); 8674 return ERROR_CODE_SUCCESS; 8675 } 8676 8677 /** 8678 * @brief Auto Connection Establishment - Start Connecting to device 8679 * @param address_typ 8680 * @param address 8681 * @return 0 if ok 8682 */ 8683 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8684 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8685 return ERROR_CODE_COMMAND_DISALLOWED; 8686 } 8687 8688 uint8_t status = hci_whitelist_add(address_type, address); 8689 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8690 return status; 8691 } 8692 8693 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8694 8695 hci_run(); 8696 return ERROR_CODE_SUCCESS; 8697 } 8698 8699 /** 8700 * @brief Auto Connection Establishment - Stop Connecting to device 8701 * @param address_typ 8702 * @param address 8703 * @return 0 if ok 8704 */ 8705 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8706 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8707 return ERROR_CODE_COMMAND_DISALLOWED; 8708 } 8709 8710 hci_whitelist_remove(address_type, address); 8711 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8712 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8713 } 8714 hci_run(); 8715 return 0; 8716 } 8717 8718 /** 8719 * @brief Auto Connection Establishment - Stop everything 8720 * @note Convenience function to stop all active auto connection attempts 8721 */ 8722 uint8_t gap_auto_connection_stop_all(void){ 8723 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8724 return ERROR_CODE_COMMAND_DISALLOWED; 8725 } 8726 hci_whitelist_clear(); 8727 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8728 hci_run(); 8729 return ERROR_CODE_SUCCESS; 8730 } 8731 8732 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8733 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8734 if (!conn) return 0; 8735 return conn->le_connection_interval; 8736 } 8737 #endif 8738 #endif 8739 8740 #ifdef ENABLE_CLASSIC 8741 /** 8742 * @brief Set Extended Inquiry Response data 8743 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8744 * @note has to be done before stack starts up 8745 */ 8746 void gap_set_extended_inquiry_response(const uint8_t * data){ 8747 hci_stack->eir_data = data; 8748 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8749 hci_run(); 8750 } 8751 8752 /** 8753 * @brief Start GAP Classic Inquiry 8754 * @param duration in 1.28s units 8755 * @return 0 if ok 8756 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8757 */ 8758 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8759 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8760 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8761 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8762 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8763 } 8764 hci_stack->inquiry_state = duration_in_1280ms_units; 8765 hci_stack->inquiry_max_period_length = 0; 8766 hci_stack->inquiry_min_period_length = 0; 8767 hci_run(); 8768 return 0; 8769 } 8770 8771 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8772 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8773 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8774 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8775 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8776 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8777 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8778 8779 hci_stack->inquiry_state = duration; 8780 hci_stack->inquiry_max_period_length = max_period_length; 8781 hci_stack->inquiry_min_period_length = min_period_length; 8782 hci_run(); 8783 return 0; 8784 } 8785 8786 /** 8787 * @brief Stop GAP Classic Inquiry 8788 * @return 0 if ok 8789 */ 8790 int gap_inquiry_stop(void){ 8791 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8792 // emit inquiry complete event, before it even started 8793 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8794 hci_emit_event(event, sizeof(event), 1); 8795 return 0; 8796 } 8797 switch (hci_stack->inquiry_state){ 8798 case GAP_INQUIRY_STATE_ACTIVE: 8799 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8800 hci_run(); 8801 return ERROR_CODE_SUCCESS; 8802 case GAP_INQUIRY_STATE_PERIODIC: 8803 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8804 hci_run(); 8805 return ERROR_CODE_SUCCESS; 8806 default: 8807 return ERROR_CODE_COMMAND_DISALLOWED; 8808 } 8809 } 8810 8811 void gap_inquiry_set_lap(uint32_t lap){ 8812 hci_stack->inquiry_lap = lap; 8813 } 8814 8815 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8816 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8817 hci_stack->inquiry_scan_window = inquiry_scan_window; 8818 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8819 hci_run(); 8820 } 8821 8822 8823 /** 8824 * @brief Remote Name Request 8825 * @param addr 8826 * @param page_scan_repetition_mode 8827 * @param clock_offset only used when bit 15 is set 8828 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8829 */ 8830 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8831 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8832 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8833 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8834 hci_stack->remote_name_clock_offset = clock_offset; 8835 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8836 hci_run(); 8837 return 0; 8838 } 8839 8840 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8841 hci_stack->gap_pairing_state = state; 8842 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8843 hci_run(); 8844 return 0; 8845 } 8846 8847 /** 8848 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8849 * @param addr 8850 * @param pin_data 8851 * @param pin_len 8852 * @return 0 if ok 8853 */ 8854 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8855 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8856 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8857 hci_stack->gap_pairing_pin_len = pin_len; 8858 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8859 } 8860 8861 /** 8862 * @brief Legacy Pairing Pin Code Response 8863 * @param addr 8864 * @param pin 8865 * @return 0 if ok 8866 */ 8867 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8868 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8869 } 8870 8871 /** 8872 * @brief Abort Legacy Pairing 8873 * @param addr 8874 * @param pin 8875 * @return 0 if ok 8876 */ 8877 int gap_pin_code_negative(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_PIN_NEGATIVE); 8880 } 8881 8882 /** 8883 * @brief SSP Passkey Response 8884 * @param addr 8885 * @param passkey 8886 * @return 0 if ok 8887 */ 8888 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8889 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8890 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8891 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8892 } 8893 8894 /** 8895 * @brief Abort SSP Passkey Entry/Pairing 8896 * @param addr 8897 * @param pin 8898 * @return 0 if ok 8899 */ 8900 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8901 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8902 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8903 } 8904 8905 /** 8906 * @brief Accept SSP Numeric Comparison 8907 * @param addr 8908 * @param passkey 8909 * @return 0 if ok 8910 */ 8911 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8912 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8913 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8914 } 8915 8916 /** 8917 * @brief Abort SSP Numeric Comparison/Pairing 8918 * @param addr 8919 * @param pin 8920 * @return 0 if ok 8921 */ 8922 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8923 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8924 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8925 } 8926 8927 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8928 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8929 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8930 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8931 connectionSetAuthenticationFlags(conn, flag); 8932 hci_run(); 8933 return ERROR_CODE_SUCCESS; 8934 } 8935 #endif 8936 8937 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8938 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8939 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8940 } 8941 8942 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8943 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8944 } 8945 #endif 8946 8947 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8948 /** 8949 * @brief Report Remote OOB Data 8950 * @param bd_addr 8951 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8952 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8953 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8954 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8955 */ 8956 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){ 8957 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8958 if (connection == NULL) { 8959 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8960 } 8961 connection->classic_oob_c_192 = c_192; 8962 connection->classic_oob_r_192 = r_192; 8963 8964 // ignore P-256 if not supported by us 8965 if (hci_stack->secure_connections_active){ 8966 connection->classic_oob_c_256 = c_256; 8967 connection->classic_oob_r_256 = r_256; 8968 } 8969 8970 return ERROR_CODE_SUCCESS; 8971 } 8972 /** 8973 * @brief Generate new OOB data 8974 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8975 */ 8976 void gap_ssp_generate_oob_data(void){ 8977 hci_stack->classic_read_local_oob_data = true; 8978 hci_run(); 8979 } 8980 8981 #endif 8982 8983 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8984 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8985 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8986 if (connection == NULL) { 8987 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8988 } 8989 8990 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8991 connection->link_key_type = type; 8992 8993 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8994 } 8995 8996 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8997 /** 8998 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8999 * @param inquiry_mode see bluetooth_defines.h 9000 */ 9001 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9002 hci_stack->inquiry_mode = inquiry_mode; 9003 } 9004 9005 /** 9006 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9007 */ 9008 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9009 hci_stack->sco_voice_setting = voice_setting; 9010 } 9011 9012 /** 9013 * @brief Get SCO Voice Setting 9014 * @return current voice setting 9015 */ 9016 uint16_t hci_get_sco_voice_setting(void){ 9017 return hci_stack->sco_voice_setting; 9018 } 9019 9020 static int hci_have_usb_transport(void){ 9021 if (!hci_stack->hci_transport) return 0; 9022 const char * transport_name = hci_stack->hci_transport->name; 9023 if (!transport_name) return 0; 9024 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9025 } 9026 9027 /** @brief Get SCO packet length for current SCO Voice setting 9028 * @note Using SCO packets of the exact length is required for USB transfer 9029 * @return Length of SCO packets in bytes (not audio frames) 9030 */ 9031 uint16_t hci_get_sco_packet_length(void){ 9032 uint16_t sco_packet_length = 0; 9033 9034 #ifdef ENABLE_SCO_OVER_HCI 9035 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9036 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9037 9038 if (hci_have_usb_transport()){ 9039 // see Core Spec for H2 USB Transfer. 9040 // 3 byte SCO header + 24 bytes per connection 9041 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 9042 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 9043 } else { 9044 // 3 byte SCO header + SCO packet size over the air (60 bytes) 9045 sco_packet_length = 3 + 60 * multiplier; 9046 // assert that it still fits inside an SCO buffer 9047 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9048 sco_packet_length = 3 + 60; 9049 } 9050 } 9051 #endif 9052 9053 #ifdef HAVE_SCO_TRANSPORT 9054 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9055 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9056 sco_packet_length = 3 + 60 * multiplier; 9057 #endif 9058 return sco_packet_length; 9059 } 9060 9061 /** 9062 * @brief Sets the master/slave policy 9063 * @param policy (0: attempt to become master, 1: let connecting device decide) 9064 */ 9065 void hci_set_master_slave_policy(uint8_t policy){ 9066 hci_stack->master_slave_policy = policy; 9067 } 9068 9069 #endif 9070 9071 HCI_STATE hci_get_state(void){ 9072 return hci_stack->state; 9073 } 9074 9075 #ifdef ENABLE_CLASSIC 9076 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9077 hci_stack->gap_classic_accept_callback = accept_callback; 9078 } 9079 #endif 9080 9081 /** 9082 * @brief Set callback for Bluetooth Hardware Error 9083 */ 9084 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9085 hci_stack->hardware_error_callback = fn; 9086 } 9087 9088 void hci_disconnect_all(void){ 9089 btstack_linked_list_iterator_t it; 9090 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9091 while (btstack_linked_list_iterator_has_next(&it)){ 9092 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9093 if (con->state == SENT_DISCONNECT) continue; 9094 con->state = SEND_DISCONNECT; 9095 } 9096 hci_run(); 9097 } 9098 9099 uint16_t hci_get_manufacturer(void){ 9100 return hci_stack->manufacturer; 9101 } 9102 9103 #ifdef ENABLE_BLE 9104 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9105 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9106 if (!hci_con) return NULL; 9107 return &hci_con->sm_connection; 9108 } 9109 9110 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9111 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9112 #endif 9113 9114 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9115 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9116 if (hci_connection == NULL) return 0; 9117 if (hci_is_le_connection(hci_connection)){ 9118 #ifdef ENABLE_BLE 9119 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9120 if (sm_conn->sm_connection_encrypted) { 9121 return sm_conn->sm_actual_encryption_key_size; 9122 } 9123 #endif 9124 } else { 9125 #ifdef ENABLE_CLASSIC 9126 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9127 return hci_connection->encryption_key_size; 9128 } 9129 #endif 9130 } 9131 return 0; 9132 } 9133 9134 bool gap_authenticated(hci_con_handle_t con_handle){ 9135 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9136 if (hci_connection == NULL) return false; 9137 9138 switch (hci_connection->address_type){ 9139 #ifdef ENABLE_BLE 9140 case BD_ADDR_TYPE_LE_PUBLIC: 9141 case BD_ADDR_TYPE_LE_RANDOM: 9142 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9143 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9144 #endif 9145 #ifdef ENABLE_CLASSIC 9146 case BD_ADDR_TYPE_SCO: 9147 case BD_ADDR_TYPE_ACL: 9148 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9149 #endif 9150 default: 9151 return false; 9152 } 9153 } 9154 9155 bool gap_secure_connection(hci_con_handle_t con_handle){ 9156 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9157 if (hci_connection == NULL) return 0; 9158 9159 switch (hci_connection->address_type){ 9160 #ifdef ENABLE_BLE 9161 case BD_ADDR_TYPE_LE_PUBLIC: 9162 case BD_ADDR_TYPE_LE_RANDOM: 9163 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9164 return hci_connection->sm_connection.sm_connection_sc != 0; 9165 #endif 9166 #ifdef ENABLE_CLASSIC 9167 case BD_ADDR_TYPE_SCO: 9168 case BD_ADDR_TYPE_ACL: 9169 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9170 #endif 9171 default: 9172 return false; 9173 } 9174 } 9175 9176 bool gap_bonded(hci_con_handle_t con_handle){ 9177 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9178 if (hci_connection == NULL) return 0; 9179 9180 #ifdef ENABLE_CLASSIC 9181 link_key_t link_key; 9182 link_key_type_t link_key_type; 9183 #endif 9184 switch (hci_connection->address_type){ 9185 #ifdef ENABLE_BLE 9186 case BD_ADDR_TYPE_LE_PUBLIC: 9187 case BD_ADDR_TYPE_LE_RANDOM: 9188 return hci_connection->sm_connection.sm_le_db_index >= 0; 9189 #endif 9190 #ifdef ENABLE_CLASSIC 9191 case BD_ADDR_TYPE_SCO: 9192 case BD_ADDR_TYPE_ACL: 9193 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9194 #endif 9195 default: 9196 return false; 9197 } 9198 } 9199 9200 #ifdef ENABLE_BLE 9201 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9202 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9203 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9204 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9205 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9206 return sm_conn->sm_connection_authorization_state; 9207 } 9208 #endif 9209 9210 #ifdef ENABLE_CLASSIC 9211 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){ 9212 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9213 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9214 conn->sniff_min_interval = sniff_min_interval; 9215 conn->sniff_max_interval = sniff_max_interval; 9216 conn->sniff_attempt = sniff_attempt; 9217 conn->sniff_timeout = sniff_timeout; 9218 hci_run(); 9219 return 0; 9220 } 9221 9222 /** 9223 * @brief Exit Sniff mode 9224 * @param con_handle 9225 @ @return 0 if ok 9226 */ 9227 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9228 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9229 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9230 conn->sniff_min_interval = 0xffff; 9231 hci_run(); 9232 return 0; 9233 } 9234 9235 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){ 9236 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9237 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9238 conn->sniff_subrating_max_latency = max_latency; 9239 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9240 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9241 hci_run(); 9242 return ERROR_CODE_SUCCESS; 9243 } 9244 9245 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){ 9246 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9247 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9248 conn->qos_service_type = service_type; 9249 conn->qos_token_rate = token_rate; 9250 conn->qos_peak_bandwidth = peak_bandwidth; 9251 conn->qos_latency = latency; 9252 conn->qos_delay_variation = delay_variation; 9253 hci_run(); 9254 return ERROR_CODE_SUCCESS; 9255 } 9256 9257 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9258 hci_stack->new_page_scan_interval = page_scan_interval; 9259 hci_stack->new_page_scan_window = page_scan_window; 9260 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9261 hci_run(); 9262 } 9263 9264 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9265 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9266 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9267 hci_run(); 9268 } 9269 9270 void gap_set_page_timeout(uint16_t page_timeout){ 9271 hci_stack->page_timeout = page_timeout; 9272 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9273 hci_run(); 9274 } 9275 9276 #endif 9277 9278 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9279 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9280 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9281 if (le_device_db_index >= le_device_db_max_count()) return; 9282 uint8_t offset = le_device_db_index >> 3; 9283 uint8_t mask = 1 << (le_device_db_index & 7); 9284 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9285 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9286 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9287 // note: go back to remove entries, otherwise, a remove + add will skip the add 9288 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9289 } 9290 } 9291 9292 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9293 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9294 if (le_device_db_index >= le_device_db_max_count()) return; 9295 uint8_t offset = le_device_db_index >> 3; 9296 uint8_t mask = 1 << (le_device_db_index & 7); 9297 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9298 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9299 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9300 } 9301 } 9302 9303 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9304 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9305 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9306 } 9307 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9308 // restart le resolving list update 9309 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9310 } 9311 return ERROR_CODE_SUCCESS; 9312 } 9313 9314 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9315 hci_stack->le_privacy_mode = privacy_mode; 9316 } 9317 #endif 9318 9319 #ifdef ENABLE_BLE 9320 #ifdef ENABLE_LE_CENTRAL 9321 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9322 9323 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9324 // check if already in list 9325 btstack_linked_list_iterator_t it; 9326 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9327 while (btstack_linked_list_iterator_has_next(&it)) { 9328 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9329 if (entry->sid != advertising_sid) { 9330 continue; 9331 } 9332 if (entry->address_type != address_type) { 9333 continue; 9334 } 9335 if (memcmp(entry->address, address, 6) != 0) { 9336 continue; 9337 } 9338 // disallow if already scheduled to add 9339 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9340 return ERROR_CODE_COMMAND_DISALLOWED; 9341 } 9342 // still on controller, but scheduled to remove -> re-add 9343 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9344 return ERROR_CODE_SUCCESS; 9345 } 9346 // alloc and add to list 9347 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9348 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9349 entry->sid = advertising_sid; 9350 entry->address_type = address_type; 9351 (void)memcpy(entry->address, address, 6); 9352 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9353 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9354 return ERROR_CODE_SUCCESS; 9355 } 9356 9357 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9358 btstack_linked_list_iterator_t it; 9359 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9360 while (btstack_linked_list_iterator_has_next(&it)){ 9361 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9362 if (entry->sid != advertising_sid) { 9363 continue; 9364 } 9365 if (entry->address_type != address_type) { 9366 continue; 9367 } 9368 if (memcmp(entry->address, address, 6) != 0) { 9369 continue; 9370 } 9371 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9372 // remove from controller if already present 9373 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9374 } else { 9375 // directly remove entry from whitelist 9376 btstack_linked_list_iterator_remove(&it); 9377 btstack_memory_periodic_advertiser_list_entry_free(entry); 9378 } 9379 return ERROR_CODE_SUCCESS; 9380 } 9381 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9382 } 9383 9384 static void hci_periodic_advertiser_list_clear(void){ 9385 btstack_linked_list_iterator_t it; 9386 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9387 while (btstack_linked_list_iterator_has_next(&it)){ 9388 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9389 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9390 // remove from controller if already present 9391 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9392 continue; 9393 } 9394 // directly remove entry from whitelist 9395 btstack_linked_list_iterator_remove(&it); 9396 btstack_memory_periodic_advertiser_list_entry_free(entry); 9397 } 9398 } 9399 9400 uint8_t gap_periodic_advertiser_list_clear(void){ 9401 hci_periodic_advertiser_list_clear(); 9402 hci_run(); 9403 return ERROR_CODE_SUCCESS; 9404 } 9405 9406 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9407 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9408 if (status){ 9409 return status; 9410 } 9411 hci_run(); 9412 return ERROR_CODE_SUCCESS; 9413 } 9414 9415 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9416 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9417 if (status){ 9418 return status; 9419 } 9420 hci_run(); 9421 return ERROR_CODE_SUCCESS; 9422 } 9423 9424 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9425 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9426 // abort if already active 9427 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9428 return ERROR_CODE_COMMAND_DISALLOWED; 9429 } 9430 // store request 9431 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9432 hci_stack->le_periodic_sync_options = options; 9433 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9434 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9435 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9436 hci_stack->le_periodic_sync_skip = skip; 9437 hci_stack->le_periodic_sync_timeout = sync_timeout; 9438 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9439 9440 hci_run(); 9441 return ERROR_CODE_SUCCESS; 9442 } 9443 9444 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9445 // abort if not requested 9446 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9447 return ERROR_CODE_COMMAND_DISALLOWED; 9448 } 9449 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9450 hci_run(); 9451 return ERROR_CODE_SUCCESS; 9452 } 9453 9454 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9455 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9456 return ERROR_CODE_COMMAND_DISALLOWED; 9457 } 9458 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9459 hci_run(); 9460 return ERROR_CODE_SUCCESS; 9461 } 9462 9463 #endif 9464 #endif 9465 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9466 static hci_iso_stream_t * 9467 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9468 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9469 if (iso_stream != NULL){ 9470 iso_stream->iso_type = iso_type; 9471 iso_stream->state = state; 9472 iso_stream->group_id = group_id; 9473 iso_stream->stream_id = stream_id; 9474 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9475 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9476 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9477 } 9478 return iso_stream; 9479 } 9480 9481 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9482 btstack_linked_list_iterator_t it; 9483 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9484 while (btstack_linked_list_iterator_has_next(&it)){ 9485 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9486 if (iso_stream->cis_handle == con_handle ) { 9487 return iso_stream; 9488 } 9489 } 9490 return NULL; 9491 } 9492 9493 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9494 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9495 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9496 btstack_memory_hci_iso_stream_free(iso_stream); 9497 } 9498 9499 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9500 btstack_linked_list_iterator_t it; 9501 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9502 while (btstack_linked_list_iterator_has_next(&it)){ 9503 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9504 if ((iso_stream->group_id == group_id) && 9505 (iso_stream->iso_type == iso_type)){ 9506 btstack_linked_list_iterator_remove(&it); 9507 btstack_memory_hci_iso_stream_free(iso_stream); 9508 } 9509 } 9510 } 9511 9512 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9513 btstack_linked_list_iterator_t it; 9514 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9515 while (btstack_linked_list_iterator_has_next(&it)){ 9516 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9517 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9518 (iso_stream->group_id == group_id)){ 9519 btstack_linked_list_iterator_remove(&it); 9520 btstack_memory_hci_iso_stream_free(iso_stream); 9521 } 9522 } 9523 } 9524 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9525 btstack_linked_list_iterator_t it; 9526 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9527 while (btstack_linked_list_iterator_has_next(&it)){ 9528 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9529 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9530 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9531 } 9532 } 9533 } 9534 9535 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9536 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9537 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9538 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9539 return (sdu_len_offset + 2 + sdu_len) == size; 9540 } 9541 9542 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9543 if (hci_stack->iso_packet_handler == NULL) { 9544 return; 9545 } 9546 if (size < 4) { 9547 return; 9548 } 9549 9550 // parse header 9551 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9552 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9553 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9554 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9555 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9556 9557 // assert packet is complete 9558 if ((iso_data_len + 4u) != size){ 9559 return; 9560 } 9561 9562 if ((pb_flag & 0x01) == 0){ 9563 if (pb_flag == 0x02){ 9564 // The ISO_Data_Load field contains a header and a complete SDU. 9565 if (hci_iso_sdu_complete(packet, size)) { 9566 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9567 } 9568 } else { 9569 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9570 if (iso_stream == NULL){ 9571 return; 9572 } 9573 if (size > HCI_ISO_PAYLOAD_SIZE){ 9574 return; 9575 } 9576 memcpy(iso_stream->reassembly_buffer, packet, size); 9577 // fix pb_flag 9578 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9579 iso_stream->reassembly_pos = size; 9580 } 9581 } else { 9582 // iso_data_load contains continuation or last fragment of an SDU 9583 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9584 if (ts_flag != 0){ 9585 return; 9586 } 9587 // append fragment 9588 if (iso_stream == NULL){ 9589 return; 9590 } 9591 if (iso_stream->reassembly_pos == 0){ 9592 return; 9593 } 9594 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9595 // reset reassembly buffer 9596 iso_stream->reassembly_pos = 0; 9597 return; 9598 } 9599 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9600 iso_stream->reassembly_pos += iso_data_len; 9601 9602 // deliver if last fragment and SDU complete 9603 if (pb_flag == 0x03){ 9604 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9605 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9606 } 9607 iso_stream->reassembly_pos = 0; 9608 } 9609 } 9610 } 9611 9612 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9613 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9614 uint16_t pos = 0; 9615 event[pos++] = HCI_EVENT_META_GAP; 9616 event[pos++] = 4 + (2 * big->num_bis); 9617 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9618 event[pos++] = status; 9619 event[pos++] = big->big_handle; 9620 event[pos++] = big->num_bis; 9621 uint8_t i; 9622 for (i=0;i<big->num_bis;i++){ 9623 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9624 pos += 2; 9625 } 9626 hci_emit_event(event, pos, 0); 9627 } 9628 9629 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9630 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9631 uint16_t pos = 0; 9632 event[pos++] = HCI_EVENT_META_GAP; 9633 event[pos++] = 4 + (2 * cig->num_cis); 9634 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9635 event[pos++] = status; 9636 event[pos++] = cig->cig_id; 9637 event[pos++] = cig->num_cis; 9638 uint8_t i; 9639 for (i=0;i<cig->num_cis;i++){ 9640 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9641 pos += 2; 9642 } 9643 hci_emit_event(event, pos, 0); 9644 } 9645 9646 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9647 hci_con_handle_t acl_con_handle) { 9648 uint8_t event [10]; 9649 uint16_t pos = 0; 9650 event[pos++] = HCI_EVENT_META_GAP; 9651 event[pos++] = 8; 9652 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9653 event[pos++] = status; 9654 event[pos++] = cig_id; 9655 event[pos++] = cis_id; 9656 little_endian_store_16(event, pos, cis_con_handle); 9657 pos += 2; 9658 little_endian_store_16(event, pos, acl_con_handle); 9659 pos += 2; 9660 hci_emit_event(event, pos, 0); 9661 } 9662 9663 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9664 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9665 // cache data before finalizing struct 9666 uint8_t cig_id = iso_stream->group_id; 9667 uint8_t cis_id = iso_stream->stream_id; 9668 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9669 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9670 if (status != ERROR_CODE_SUCCESS){ 9671 hci_iso_stream_finalize(iso_stream); 9672 } 9673 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9674 } 9675 9676 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9677 uint8_t event [4]; 9678 uint16_t pos = 0; 9679 event[pos++] = HCI_EVENT_META_GAP; 9680 event[pos++] = 2; 9681 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9682 event[pos++] = big->big_handle; 9683 hci_emit_event(event, pos, 0); 9684 } 9685 9686 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9687 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9688 uint16_t pos = 0; 9689 event[pos++] = HCI_EVENT_META_GAP; 9690 event[pos++] = 4; 9691 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9692 event[pos++] = status; 9693 event[pos++] = big_sync->big_handle; 9694 event[pos++] = big_sync->num_bis; 9695 uint8_t i; 9696 for (i=0;i<big_sync->num_bis;i++){ 9697 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9698 pos += 2; 9699 } 9700 hci_emit_event(event, pos, 0); 9701 } 9702 9703 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9704 uint8_t event [4]; 9705 uint16_t pos = 0; 9706 event[pos++] = HCI_EVENT_META_GAP; 9707 event[pos++] = 2; 9708 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9709 event[pos++] = big_handle; 9710 hci_emit_event(event, pos, 0); 9711 } 9712 9713 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9714 uint8_t event[6]; 9715 uint16_t pos = 0; 9716 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9717 event[pos++] = sizeof(event) - 2; 9718 event[pos++] = big->big_handle; 9719 event[pos++] = bis_index; 9720 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9721 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9722 } 9723 9724 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9725 uint8_t event[4]; 9726 uint16_t pos = 0; 9727 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9728 event[pos++] = sizeof(event) - 2; 9729 little_endian_store_16(event, pos, cis_con_handle); 9730 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9731 } 9732 9733 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9734 btstack_linked_list_iterator_t it; 9735 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9736 while (btstack_linked_list_iterator_has_next(&it)){ 9737 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9738 if ( big->big_handle == big_handle ) { 9739 return big; 9740 } 9741 } 9742 return NULL; 9743 } 9744 9745 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9746 btstack_linked_list_iterator_t it; 9747 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9748 while (btstack_linked_list_iterator_has_next(&it)){ 9749 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9750 if ( big_sync->big_handle == big_handle ) { 9751 return big_sync; 9752 } 9753 } 9754 return NULL; 9755 } 9756 9757 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9758 hci_stack->iso_packets_to_queue = num_packets; 9759 } 9760 9761 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9762 btstack_linked_list_iterator_t it; 9763 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9764 while (btstack_linked_list_iterator_has_next(&it)){ 9765 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9766 if ( cig->cig_id == cig_id ) { 9767 return cig; 9768 } 9769 } 9770 return NULL; 9771 } 9772 9773 static void hci_iso_notify_can_send_now(void){ 9774 9775 // BIG 9776 9777 btstack_linked_list_iterator_t it; 9778 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9779 while (btstack_linked_list_iterator_has_next(&it)){ 9780 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9781 // track number completed packet timestamps 9782 if (big->num_completed_timestamp_current_valid){ 9783 big->num_completed_timestamp_current_valid = false; 9784 if (big->num_completed_timestamp_previous_valid){ 9785 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9786 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9787 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9788 big->num_completed_timestamp_previous_ms); 9789 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9790 // to catch up, skip packet on all BIS 9791 uint8_t i; 9792 for (i=0;i<big->num_bis;i++){ 9793 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9794 if (iso_stream){ 9795 iso_stream->num_packets_to_skip++; 9796 } 9797 } 9798 } 9799 } 9800 big->num_completed_timestamp_previous_valid = true; 9801 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9802 } 9803 9804 if (big->can_send_now_requested){ 9805 // check if no outgoing iso packets pending and no can send now have to be emitted 9806 uint8_t i; 9807 bool can_send = true; 9808 uint8_t num_iso_queued_minimum = 0; 9809 for (i=0;i<big->num_bis;i++){ 9810 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9811 if (iso_stream == NULL) continue; 9812 // handle case where individual ISO packet was sent too late: 9813 // for each additionally queued packet, a new one needs to get skipped 9814 if (i==0){ 9815 num_iso_queued_minimum = iso_stream->num_packets_sent; 9816 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9817 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9818 iso_stream->num_packets_to_skip += num_packets_to_skip; 9819 iso_stream->num_packets_sent -= num_packets_to_skip; 9820 } 9821 // check if we can send now 9822 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9823 can_send = false; 9824 break; 9825 } 9826 } 9827 if (can_send){ 9828 // propagate can send now to individual streams 9829 big->can_send_now_requested = false; 9830 for (i=0;i<big->num_bis;i++){ 9831 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9832 iso_stream->emit_ready_to_send = true; 9833 } 9834 } 9835 } 9836 } 9837 9838 if (hci_stack->hci_packet_buffer_reserved) return; 9839 9840 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9841 while (btstack_linked_list_iterator_has_next(&it)){ 9842 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9843 // report bis ready 9844 uint8_t i; 9845 for (i=0;i<big->num_bis;i++){ 9846 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9847 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9848 iso_stream->emit_ready_to_send = false; 9849 hci_emit_bis_can_send_now(big, i); 9850 break; 9851 } 9852 } 9853 } 9854 9855 // CIS 9856 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9857 while (btstack_linked_list_iterator_has_next(&it)) { 9858 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9859 if ((iso_stream->can_send_now_requested) && 9860 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9861 iso_stream->can_send_now_requested = false; 9862 hci_emit_cis_can_send_now(iso_stream->cis_handle); 9863 } 9864 } 9865 } 9866 9867 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9868 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9869 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9870 } 9871 if (big_params->num_bis == 0){ 9872 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9873 } 9874 if (big_params->num_bis > MAX_NR_BIS){ 9875 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9876 } 9877 9878 // reserve ISO Streams 9879 uint8_t i; 9880 uint8_t status = ERROR_CODE_SUCCESS; 9881 for (i=0;i<big_params->num_bis;i++){ 9882 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 9883 if (iso_stream == NULL) { 9884 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9885 break; 9886 } 9887 } 9888 9889 // free structs on error 9890 if (status != ERROR_CODE_SUCCESS){ 9891 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9892 return status; 9893 } 9894 9895 le_audio_big_t * big = storage; 9896 big->big_handle = big_params->big_handle; 9897 big->params = big_params; 9898 big->state = LE_AUDIO_BIG_STATE_CREATE; 9899 big->num_bis = big_params->num_bis; 9900 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9901 9902 hci_run(); 9903 9904 return ERROR_CODE_SUCCESS; 9905 } 9906 9907 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9908 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9909 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9910 } 9911 if (big_sync_params->num_bis == 0){ 9912 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9913 } 9914 if (big_sync_params->num_bis > MAX_NR_BIS){ 9915 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9916 } 9917 9918 le_audio_big_sync_t * big_sync = storage; 9919 big_sync->big_handle = big_sync_params->big_handle; 9920 big_sync->params = big_sync_params; 9921 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9922 big_sync->num_bis = big_sync_params->num_bis; 9923 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9924 9925 hci_run(); 9926 9927 return ERROR_CODE_SUCCESS; 9928 } 9929 9930 uint8_t gap_big_terminate(uint8_t big_handle){ 9931 le_audio_big_t * big = hci_big_for_handle(big_handle); 9932 if (big == NULL){ 9933 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9934 } 9935 switch (big->state){ 9936 case LE_AUDIO_BIG_STATE_CREATE: 9937 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9938 hci_emit_big_terminated(big); 9939 break; 9940 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9941 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9942 break; 9943 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9944 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9945 case LE_AUDIO_BIG_STATE_ACTIVE: 9946 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9947 hci_run(); 9948 break; 9949 default: 9950 return ERROR_CODE_COMMAND_DISALLOWED; 9951 } 9952 return ERROR_CODE_SUCCESS; 9953 } 9954 9955 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9956 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9957 if (big_sync == NULL){ 9958 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9959 } 9960 switch (big_sync->state){ 9961 case LE_AUDIO_BIG_STATE_CREATE: 9962 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9963 hci_emit_big_sync_stopped(big_handle); 9964 break; 9965 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9966 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9967 break; 9968 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9969 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9970 case LE_AUDIO_BIG_STATE_ACTIVE: 9971 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9972 hci_run(); 9973 break; 9974 default: 9975 return ERROR_CODE_COMMAND_DISALLOWED; 9976 } 9977 return ERROR_CODE_SUCCESS; 9978 } 9979 9980 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9981 le_audio_big_t * big = hci_big_for_handle(big_handle); 9982 if (big == NULL){ 9983 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9984 } 9985 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9986 return ERROR_CODE_COMMAND_DISALLOWED; 9987 } 9988 big->can_send_now_requested = true; 9989 hci_iso_notify_can_send_now(); 9990 return ERROR_CODE_SUCCESS; 9991 } 9992 9993 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9994 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9995 if (iso_stream == NULL){ 9996 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9997 } 9998 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9999 return ERROR_CODE_COMMAND_DISALLOWED; 10000 } 10001 iso_stream->can_send_now_requested = true; 10002 hci_iso_notify_can_send_now(); 10003 return ERROR_CODE_SUCCESS; 10004 } 10005 10006 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10007 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10008 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10009 } 10010 if (cig_params->num_cis == 0){ 10011 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10012 } 10013 if (cig_params->num_cis > MAX_NR_BIS){ 10014 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10015 } 10016 10017 // reserve ISO Streams 10018 uint8_t i; 10019 uint8_t status = ERROR_CODE_SUCCESS; 10020 for (i=0;i<cig_params->num_cis;i++){ 10021 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10022 if (iso_stream == NULL) { 10023 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10024 break; 10025 } 10026 } 10027 10028 // free structs on error 10029 if (status != ERROR_CODE_SUCCESS){ 10030 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10031 return status; 10032 } 10033 10034 le_audio_cig_t * cig = storage; 10035 cig->cig_id = cig_params->cig_id; 10036 cig->num_cis = cig_params->num_cis; 10037 cig->params = cig_params; 10038 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10039 for (i=0;i<cig->num_cis;i++){ 10040 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10041 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10042 cig->cis_setup_active[i] = false; 10043 cig->cis_established[i] = false; 10044 } 10045 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10046 10047 hci_run(); 10048 10049 return ERROR_CODE_SUCCESS; 10050 } 10051 10052 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10053 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10054 if (cig == NULL){ 10055 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10056 } 10057 10058 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10059 return ERROR_CODE_COMMAND_DISALLOWED; 10060 } 10061 10062 // store ACL Connection Handles 10063 uint8_t i; 10064 for (i=0;i<cig->num_cis;i++){ 10065 // check that all con handles exist and store 10066 hci_con_handle_t cis_handle = cis_con_handles[i]; 10067 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10068 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10069 } 10070 uint8_t j; 10071 bool found = false; 10072 for (j=0;j<cig->num_cis;j++){ 10073 if (cig->cis_con_handles[j] == cis_handle){ 10074 cig->acl_con_handles[j] = acl_con_handles[j]; 10075 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10076 btstack_assert(iso_stream != NULL); 10077 iso_stream->acl_handle = acl_con_handles[j]; 10078 found = true; 10079 break; 10080 } 10081 } 10082 if (!found){ 10083 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10084 } 10085 } 10086 10087 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10088 hci_run(); 10089 10090 return ERROR_CODE_SUCCESS; 10091 } 10092 10093 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10094 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10095 if (iso_stream == NULL){ 10096 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10097 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10098 } 10099 10100 // set next state and continue 10101 iso_stream->state = state; 10102 hci_run(); 10103 return ERROR_CODE_SUCCESS; 10104 } 10105 10106 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10107 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10108 } 10109 10110 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10111 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10112 } 10113 10114 10115 #endif 10116 #endif /* ENABLE_BLE */ 10117 10118 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10119 void hci_setup_test_connections_fuzz(void){ 10120 hci_connection_t * conn; 10121 10122 // default address: 66:55:44:33:00:01 10123 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10124 10125 // setup Controller info 10126 hci_stack->num_cmd_packets = 255; 10127 hci_stack->acl_packets_total_num = 255; 10128 10129 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10130 addr[5] = 0x01; 10131 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10132 conn->con_handle = addr[5]; 10133 conn->role = HCI_ROLE_SLAVE; 10134 conn->state = RECEIVED_CONNECTION_REQUEST; 10135 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10136 10137 // setup incoming Classic SCO connection with con handle 0x0002 10138 addr[5] = 0x02; 10139 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10140 conn->con_handle = addr[5]; 10141 conn->role = HCI_ROLE_SLAVE; 10142 conn->state = RECEIVED_CONNECTION_REQUEST; 10143 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10144 10145 // setup ready Classic ACL connection with con handle 0x0003 10146 addr[5] = 0x03; 10147 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10148 conn->con_handle = addr[5]; 10149 conn->role = HCI_ROLE_SLAVE; 10150 conn->state = OPEN; 10151 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10152 10153 // setup ready Classic SCO connection with con handle 0x0004 10154 addr[5] = 0x04; 10155 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10156 conn->con_handle = addr[5]; 10157 conn->role = HCI_ROLE_SLAVE; 10158 conn->state = OPEN; 10159 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10160 10161 // setup ready LE ACL connection with con handle 0x005 and public address 10162 addr[5] = 0x05; 10163 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 10164 conn->con_handle = addr[5]; 10165 conn->role = HCI_ROLE_SLAVE; 10166 conn->state = OPEN; 10167 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10168 conn->sm_connection.sm_connection_encrypted = 1; 10169 } 10170 10171 void hci_free_connections_fuzz(void){ 10172 btstack_linked_list_iterator_t it; 10173 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10174 while (btstack_linked_list_iterator_has_next(&it)){ 10175 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10176 btstack_linked_list_iterator_remove(&it); 10177 btstack_memory_hci_connection_free(con); 10178 } 10179 } 10180 void hci_simulate_working_fuzz(void){ 10181 hci_stack->le_scanning_param_update = false; 10182 hci_init_done(); 10183 hci_stack->num_cmd_packets = 255; 10184 } 10185 #endif 10186