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