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 conn->requested_security_level = LEVEL_0; 2586 hci_emit_security_level(conn->con_handle, security_level); 2587 return; 2588 } 2589 2590 // Request remote features if not already done 2591 hci_trigger_remote_features_for_connection(conn); 2592 2593 // Request Authentication if not already done 2594 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2595 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2596 } 2597 #endif 2598 2599 static void hci_store_local_supported_commands(const uint8_t * packet){ 2600 // create mapping table 2601 #define X(name, offset, bit) { offset, bit }, 2602 static struct { 2603 uint8_t byte_offset; 2604 uint8_t bit_position; 2605 } supported_hci_commands_map [] = { 2606 SUPPORTED_HCI_COMMANDS 2607 }; 2608 #undef X 2609 2610 // create names for debug purposes 2611 #ifdef ENABLE_LOG_DEBUG 2612 #define X(name, offset, bit) #name, 2613 static const char * command_names[] = { 2614 SUPPORTED_HCI_COMMANDS 2615 }; 2616 #undef X 2617 #endif 2618 2619 hci_stack->local_supported_commands = 0; 2620 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2621 uint16_t i; 2622 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2623 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2624 #ifdef ENABLE_LOG_DEBUG 2625 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); 2626 #else 2627 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2628 #endif 2629 hci_stack->local_supported_commands |= (1LU << i); 2630 } 2631 } 2632 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2633 } 2634 2635 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2636 UNUSED(size); 2637 2638 uint16_t manufacturer; 2639 #ifdef ENABLE_CLASSIC 2640 hci_con_handle_t handle; 2641 hci_connection_t * conn; 2642 #endif 2643 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2644 uint8_t status; 2645 #endif 2646 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2647 le_audio_cig_t * cig; 2648 #endif 2649 2650 // get num cmd packets - limit to 1 to reduce complexity 2651 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2652 2653 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2654 switch (opcode){ 2655 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2656 if (packet[5]) break; 2657 // terminate, name 248 chars 2658 packet[6+248] = 0; 2659 log_info("local name: %s", &packet[6]); 2660 break; 2661 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2662 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2663 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2664 uint16_t acl_len = little_endian_read_16(packet, 6); 2665 uint16_t sco_len = packet[8]; 2666 2667 // determine usable ACL/SCO payload size 2668 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2669 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2670 2671 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2672 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2673 2674 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2675 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2676 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2677 } 2678 break; 2679 case HCI_OPCODE_HCI_READ_RSSI: 2680 if (packet[5] == ERROR_CODE_SUCCESS){ 2681 uint8_t event[5]; 2682 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2683 event[1] = 3; 2684 (void)memcpy(&event[2], &packet[6], 3); 2685 hci_emit_event(event, sizeof(event), 1); 2686 } 2687 break; 2688 #ifdef ENABLE_BLE 2689 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2690 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2691 hci_stack->le_iso_packets_total_num = packet[11]; 2692 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2693 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2694 2695 /* fall through */ 2696 2697 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2698 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2699 hci_stack->le_acl_packets_total_num = packet[8]; 2700 // determine usable ACL payload size 2701 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2702 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2703 } 2704 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); 2705 break; 2706 #endif 2707 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2708 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2709 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2710 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2711 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); 2712 break; 2713 #endif 2714 #ifdef ENABLE_LE_CENTRAL 2715 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2716 hci_stack->le_whitelist_capacity = packet[6]; 2717 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2718 break; 2719 #endif 2720 #ifdef ENABLE_LE_PERIPHERAL 2721 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2722 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2723 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2724 break; 2725 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2726 if (hci_stack->le_advertising_set_in_current_command != 0) { 2727 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2728 hci_stack->le_advertising_set_in_current_command = 0; 2729 if (advertising_set == NULL) break; 2730 uint8_t adv_status = packet[6]; 2731 uint8_t tx_power = packet[7]; 2732 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 }; 2733 if (adv_status == 0){ 2734 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2735 } 2736 hci_emit_event(event, sizeof(event), 1); 2737 } 2738 break; 2739 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2740 if (hci_stack->le_advertising_set_in_current_command != 0) { 2741 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2742 hci_stack->le_advertising_set_in_current_command = 0; 2743 if (advertising_set == NULL) break; 2744 uint8_t adv_status = packet[5]; 2745 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2746 if (adv_status == 0){ 2747 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2748 } 2749 hci_emit_event(event, sizeof(event), 1); 2750 } 2751 break; 2752 #endif 2753 #endif 2754 case HCI_OPCODE_HCI_READ_BD_ADDR: 2755 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2756 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)); 2757 #ifdef ENABLE_CLASSIC 2758 if (hci_stack->link_key_db){ 2759 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2760 } 2761 #endif 2762 break; 2763 #ifdef ENABLE_CLASSIC 2764 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2765 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2766 break; 2767 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2768 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2769 if (status == ERROR_CODE_SUCCESS) { 2770 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2771 } else { 2772 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2773 } 2774 break; 2775 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2776 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2777 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2778 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2779 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2780 hci_emit_event(event, sizeof(event), 1); 2781 } 2782 break; 2783 #endif 2784 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2785 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2786 2787 #ifdef ENABLE_CLASSIC 2788 // determine usable ACL packet types based on host buffer size and supported features 2789 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2790 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2791 #endif 2792 // Classic/LE 2793 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2794 break; 2795 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2796 manufacturer = little_endian_read_16(packet, 10); 2797 // map Cypress & Infineon to Broadcom 2798 switch (manufacturer){ 2799 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2800 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2801 log_info("Treat Cypress/Infineon as Broadcom"); 2802 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2803 little_endian_store_16(packet, 10, manufacturer); 2804 break; 2805 default: 2806 break; 2807 } 2808 hci_stack->manufacturer = manufacturer; 2809 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2810 break; 2811 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2812 hci_store_local_supported_commands(packet); 2813 break; 2814 #ifdef ENABLE_CLASSIC 2815 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2816 if (packet[5]) return; 2817 hci_stack->synchronous_flow_control_enabled = 1; 2818 break; 2819 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2820 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2821 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2822 conn = hci_connection_for_handle(handle); 2823 if (conn != NULL) { 2824 uint8_t key_size = 0; 2825 if (status == 0){ 2826 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2827 log_info("Handle %04x key Size: %u", handle, key_size); 2828 } else { 2829 key_size = 1; 2830 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2831 } 2832 hci_handle_read_encryption_key_size_complete(conn, key_size); 2833 } 2834 break; 2835 // assert pairing complete event is emitted. 2836 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2837 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2838 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2839 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2840 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2841 // lookup connection by gap pairing addr 2842 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2843 if (conn == NULL) break; 2844 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2845 break; 2846 2847 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2848 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2849 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2850 uint8_t event[67]; 2851 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2852 event[1] = 65; 2853 (void)memset(&event[2], 0, 65); 2854 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2855 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2856 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2857 event[2] = 3; 2858 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2859 } else { 2860 event[2] = 1; 2861 } 2862 } 2863 hci_emit_event(event, sizeof(event), 0); 2864 break; 2865 } 2866 2867 // note: only needed if user does not provide OOB data 2868 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2869 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2870 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2871 if (conn == NULL) break; 2872 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2873 break; 2874 #endif 2875 #endif 2876 #ifdef ENABLE_BLE 2877 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2878 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2879 // lookup CIG 2880 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2881 if (cig != NULL){ 2882 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2883 uint8_t i = 0; 2884 if (status == ERROR_CODE_SUCCESS){ 2885 // assign CIS handles to pre-allocated CIS 2886 btstack_linked_list_iterator_t it; 2887 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2888 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2889 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2890 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2891 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2892 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2893 iso_stream->cis_handle = cis_handle; 2894 cig->cis_con_handles[i] = cis_handle; 2895 i++; 2896 } 2897 } 2898 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2899 hci_emit_cig_created(cig, status); 2900 } else { 2901 hci_emit_cig_created(cig, status); 2902 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2903 } 2904 } 2905 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2906 break; 2907 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2908 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2909 if (status != ERROR_CODE_SUCCESS){ 2910 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2911 } 2912 break; 2913 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2914 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2915 if (status != ERROR_CODE_SUCCESS){ 2916 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2917 } 2918 break; 2919 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2920 // lookup BIG by state 2921 btstack_linked_list_iterator_t it; 2922 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2923 while (btstack_linked_list_iterator_has_next(&it)) { 2924 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2925 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2926 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2927 if (status == ERROR_CODE_SUCCESS){ 2928 big->state_vars.next_bis++; 2929 if (big->state_vars.next_bis == big->num_bis){ 2930 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2931 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2932 } else { 2933 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2934 } 2935 } else { 2936 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2937 big->state_vars.status = status; 2938 } 2939 return; 2940 } 2941 } 2942 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2943 while (btstack_linked_list_iterator_has_next(&it)) { 2944 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2945 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2946 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2947 if (status == ERROR_CODE_SUCCESS){ 2948 big_sync->state_vars.next_bis++; 2949 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2950 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2951 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2952 } else { 2953 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2954 } 2955 } else { 2956 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2957 big_sync->state_vars.status = status; 2958 } 2959 return; 2960 } 2961 } 2962 // Lookup CIS via active group operation 2963 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2964 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2965 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2966 2967 // lookup CIS by state 2968 btstack_linked_list_iterator_t it; 2969 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2970 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2971 while (btstack_linked_list_iterator_has_next(&it)){ 2972 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2973 handle = iso_stream->cis_handle; 2974 bool emit_cis_created = false; 2975 switch (iso_stream->state){ 2976 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2977 if (status != ERROR_CODE_SUCCESS){ 2978 emit_cis_created = true; 2979 break; 2980 } 2981 if (iso_stream->max_sdu_c_to_p > 0){ 2982 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2983 } else { 2984 emit_cis_created = true; 2985 } 2986 break; 2987 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2988 emit_cis_created = true; 2989 break; 2990 default: 2991 break; 2992 } 2993 if (emit_cis_created){ 2994 hci_cis_handle_created(iso_stream, status); 2995 } 2996 } 2997 } else { 2998 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2999 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3000 if (cig != NULL) { 3001 // emit cis created if all ISO Paths have been created 3002 // assume we are central 3003 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3004 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3005 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3006 // if outgoing has been setup, or incoming was setup but outgoing not required 3007 if ((cis_direction == 1) || (outgoing_needed == false)){ 3008 // lookup iso stream by cig/cis 3009 while (btstack_linked_list_iterator_has_next(&it)) { 3010 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3011 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3012 hci_cis_handle_created(iso_stream, status); 3013 } 3014 } 3015 } 3016 // next state 3017 cig->state_vars.next_cis++; 3018 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3019 } 3020 } 3021 } 3022 break; 3023 } 3024 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3025 // lookup BIG by state 3026 btstack_linked_list_iterator_t it; 3027 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3028 while (btstack_linked_list_iterator_has_next(&it)) { 3029 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3030 uint8_t big_handle = big_sync->big_handle; 3031 switch (big_sync->state){ 3032 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3033 btstack_linked_list_iterator_remove(&it); 3034 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3035 return; 3036 default: 3037 btstack_linked_list_iterator_remove(&it); 3038 hci_emit_big_sync_stopped(big_handle); 3039 return; 3040 } 3041 } 3042 break; 3043 } 3044 #endif 3045 #endif 3046 default: 3047 break; 3048 } 3049 } 3050 3051 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3052 UNUSED(size); 3053 3054 // get num cmd packets - limit to 1 to reduce complexity 3055 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3056 3057 // get opcode and command status 3058 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3059 3060 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3061 uint8_t status = hci_event_command_status_get_status(packet); 3062 #endif 3063 3064 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3065 bd_addr_type_t addr_type; 3066 bd_addr_t addr; 3067 #endif 3068 3069 switch (opcode){ 3070 #ifdef ENABLE_CLASSIC 3071 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3072 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3073 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3074 #endif 3075 #ifdef ENABLE_LE_CENTRAL 3076 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3077 #endif 3078 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3079 addr_type = hci_stack->outgoing_addr_type; 3080 memcpy(addr, hci_stack->outgoing_addr, 6); 3081 3082 // reset outgoing address info 3083 memset(hci_stack->outgoing_addr, 0, 6); 3084 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3085 3086 // on error 3087 if (status != ERROR_CODE_SUCCESS){ 3088 #ifdef ENABLE_LE_CENTRAL 3089 if (hci_is_le_connection_type(addr_type)){ 3090 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3091 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3092 } 3093 #endif 3094 // error => outgoing connection failed 3095 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3096 if (conn != NULL){ 3097 hci_handle_connection_failed(conn, status); 3098 } 3099 } 3100 break; 3101 #endif 3102 #ifdef ENABLE_CLASSIC 3103 case HCI_OPCODE_HCI_INQUIRY: 3104 if (status == ERROR_CODE_SUCCESS) { 3105 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3106 } else { 3107 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3108 } 3109 break; 3110 #endif 3111 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3112 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3113 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3114 if (status == ERROR_CODE_SUCCESS){ 3115 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3116 } else { 3117 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3118 } 3119 break; 3120 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3121 default: 3122 break; 3123 } 3124 } 3125 3126 #ifdef ENABLE_BLE 3127 static void event_handle_le_connection_complete(const uint8_t * packet){ 3128 bd_addr_t addr; 3129 bd_addr_type_t addr_type; 3130 hci_connection_t * conn; 3131 3132 // read fields 3133 uint8_t status = packet[3]; 3134 hci_role_t role = (hci_role_t) packet[6]; 3135 3136 // support different connection complete events 3137 uint16_t conn_interval; 3138 switch (packet[2]){ 3139 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3140 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3141 break; 3142 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3143 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3144 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3145 break; 3146 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3147 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3148 break; 3149 #endif 3150 default: 3151 btstack_unreachable(); 3152 return; 3153 } 3154 3155 // Connection management 3156 reverse_bd_addr(&packet[8], addr); 3157 addr_type = (bd_addr_type_t)packet[7]; 3158 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3159 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3160 3161 #ifdef ENABLE_LE_CENTRAL 3162 // handle error: error is reported only to the initiator -> outgoing connection 3163 if (status){ 3164 3165 // handle cancelled outgoing connection 3166 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3167 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3168 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3169 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3170 // reset state 3171 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3172 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3173 // get outgoing connection conn struct for direct connect 3174 conn = gap_get_outgoing_connection(); 3175 } 3176 3177 // outgoing le connection establishment is done 3178 if (conn){ 3179 // remove entry 3180 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3181 btstack_memory_hci_connection_free( conn ); 3182 } 3183 return; 3184 } 3185 #endif 3186 3187 // on success, both hosts receive connection complete event 3188 if (role == HCI_ROLE_MASTER){ 3189 #ifdef ENABLE_LE_CENTRAL 3190 // if we're master on an le connection, it was an outgoing connection and we're done with it 3191 // note: no hci_connection_t object exists yet for connect with whitelist 3192 if (hci_is_le_connection_type(addr_type)){ 3193 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3194 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3195 } 3196 #endif 3197 } else { 3198 #ifdef ENABLE_LE_PERIPHERAL 3199 // if we're slave, it was an incoming connection, advertisements have stopped 3200 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3201 #endif 3202 } 3203 3204 // LE connections are auto-accepted, so just create a connection if there isn't one already 3205 if (!conn){ 3206 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3207 } 3208 3209 // no memory, sorry. 3210 if (!conn){ 3211 return; 3212 } 3213 3214 conn->state = OPEN; 3215 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3216 conn->le_connection_interval = conn_interval; 3217 3218 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3219 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3220 3221 #ifdef ENABLE_LE_PERIPHERAL 3222 if (role == HCI_ROLE_SLAVE){ 3223 hci_update_advertisements_enabled_for_current_roles(); 3224 } 3225 #endif 3226 3227 // init unenhanced att bearer mtu 3228 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3229 conn->att_connection.mtu_exchanged = false; 3230 3231 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3232 3233 // restart timer 3234 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3235 // btstack_run_loop_add_timer(&conn->timeout); 3236 3237 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3238 3239 hci_emit_nr_connections_changed(); 3240 } 3241 #endif 3242 3243 #ifdef ENABLE_CLASSIC 3244 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){ 3245 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3246 // LEVEL_4 is tested by l2cap 3247 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3248 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3249 if (level >= LEVEL_3){ 3250 // MITM not possible without keyboard or display 3251 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3252 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3253 3254 // MITM possible if one side has keyboard and the other has keyboard or display 3255 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3256 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3257 3258 // MITM not possible if one side has only display and other side has no keyboard 3259 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3260 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3261 } 3262 // LEVEL 2 requires SSP, which is a given 3263 return true; 3264 } 3265 3266 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3267 // get requested security level 3268 gap_security_level_t requested_security_level = conn->requested_security_level; 3269 if (hci_stack->gap_secure_connections_only_mode){ 3270 requested_security_level = LEVEL_4; 3271 } 3272 3273 // assess security: LEVEL 4 requires SC 3274 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3275 if ((requested_security_level == LEVEL_4) && 3276 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3277 !hci_remote_sc_enabled(conn)){ 3278 log_info("Level 4 required, but SC not supported -> abort"); 3279 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3280 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3281 return; 3282 } 3283 3284 // assess security based on io capabilities 3285 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3286 // responder: fully validate io caps of both sides as well as OOB data 3287 bool security_possible = false; 3288 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3289 3290 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3291 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3292 // so we merge the OOB data availability 3293 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3294 if (conn->classic_oob_c_192 != NULL){ 3295 have_oob_data |= 1; 3296 } 3297 if (conn->classic_oob_c_256 != NULL){ 3298 have_oob_data |= 2; 3299 } 3300 // for up to Level 3, either P-192 as well as P-256 will do 3301 // 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 3302 // if remote does not SC, we should not receive P-256 data either 3303 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3304 security_possible = true; 3305 } 3306 // for Level 4, P-256 is needed 3307 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3308 security_possible = true; 3309 } 3310 #endif 3311 3312 if (security_possible == false){ 3313 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3314 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3315 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3316 return; 3317 } 3318 } else { 3319 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3320 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3321 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3322 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3323 log_info("Level 3+ required, but no input/output -> abort"); 3324 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3325 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3326 return; 3327 } 3328 #endif 3329 #endif 3330 } 3331 3332 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3333 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3334 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3335 } else { 3336 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3337 } 3338 #endif 3339 } 3340 3341 #endif 3342 3343 static void event_handler(uint8_t *packet, uint16_t size){ 3344 3345 uint16_t event_length = packet[1]; 3346 3347 // assert packet is complete 3348 if (size != (event_length + 2u)){ 3349 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3350 return; 3351 } 3352 3353 hci_con_handle_t handle; 3354 hci_connection_t * conn; 3355 int i; 3356 3357 #ifdef ENABLE_CLASSIC 3358 hci_link_type_t link_type; 3359 bd_addr_t addr; 3360 bd_addr_type_t addr_type; 3361 #endif 3362 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3363 hci_iso_stream_t * iso_stream; 3364 le_audio_big_t * big; 3365 le_audio_big_sync_t * big_sync; 3366 #endif 3367 3368 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3369 3370 switch (hci_event_packet_get_type(packet)) { 3371 3372 case HCI_EVENT_COMMAND_COMPLETE: 3373 handle_command_complete_event(packet, size); 3374 break; 3375 3376 case HCI_EVENT_COMMAND_STATUS: 3377 handle_command_status_event(packet, size); 3378 break; 3379 3380 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3381 if (size < 3) return; 3382 uint16_t num_handles = packet[2]; 3383 if (size != (3u + num_handles * 4u)) return; 3384 #ifdef ENABLE_CLASSIC 3385 bool notify_sco = false; 3386 #endif 3387 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3388 bool notify_iso = false; 3389 #endif 3390 uint16_t offset = 3; 3391 for (i=0; i<num_handles;i++){ 3392 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3393 offset += 2u; 3394 uint16_t num_packets = little_endian_read_16(packet, offset); 3395 offset += 2u; 3396 3397 conn = hci_connection_for_handle(handle); 3398 if (conn != NULL) { 3399 3400 if (conn->num_packets_sent >= num_packets) { 3401 conn->num_packets_sent -= num_packets; 3402 } else { 3403 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3404 conn->num_packets_sent = 0; 3405 } 3406 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3407 #ifdef ENABLE_CLASSIC 3408 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3409 notify_sco = true; 3410 } 3411 #endif 3412 } 3413 3414 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3415 hci_controller_dump_packets(); 3416 #endif 3417 3418 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3419 if (conn == NULL){ 3420 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3421 if (iso_stream != NULL){ 3422 if (iso_stream->num_packets_sent >= num_packets) { 3423 iso_stream->num_packets_sent -= num_packets; 3424 } else { 3425 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3426 iso_stream->num_packets_sent = 0; 3427 } 3428 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3429 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3430 if (big != NULL){ 3431 big->num_completed_timestamp_current_valid = true; 3432 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3433 } 3434 } 3435 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3436 num_packets, handle, iso_stream->num_packets_sent); 3437 notify_iso = true; 3438 } 3439 } 3440 #endif 3441 } 3442 3443 #ifdef ENABLE_CLASSIC 3444 if (notify_sco){ 3445 hci_notify_if_sco_can_send_now(); 3446 } 3447 #endif 3448 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3449 if (notify_iso){ 3450 hci_iso_notify_can_send_now(); 3451 } 3452 #endif 3453 break; 3454 } 3455 3456 #ifdef ENABLE_CLASSIC 3457 case HCI_EVENT_FLUSH_OCCURRED: 3458 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3459 handle = hci_event_flush_occurred_get_handle(packet); 3460 conn = hci_connection_for_handle(handle); 3461 if (conn) { 3462 log_info("Flush occurred, disconnect 0x%04x", handle); 3463 conn->state = SEND_DISCONNECT; 3464 } 3465 break; 3466 3467 case HCI_EVENT_INQUIRY_COMPLETE: 3468 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3469 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3470 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3471 hci_emit_event(event, sizeof(event), 1); 3472 } 3473 break; 3474 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3475 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3476 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3477 } 3478 break; 3479 case HCI_EVENT_CONNECTION_REQUEST: 3480 reverse_bd_addr(&packet[2], addr); 3481 link_type = (hci_link_type_t) packet[11]; 3482 3483 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3484 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3485 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3486 bd_addr_copy(hci_stack->decline_addr, addr); 3487 break; 3488 } 3489 3490 if (hci_stack->gap_classic_accept_callback != NULL){ 3491 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3492 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3493 bd_addr_copy(hci_stack->decline_addr, addr); 3494 break; 3495 } 3496 } 3497 3498 // TODO: eval COD 8-10 3499 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3500 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3501 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3502 if (!conn) { 3503 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3504 } 3505 if (!conn) { 3506 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3507 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3508 bd_addr_copy(hci_stack->decline_addr, addr); 3509 hci_run(); 3510 // avoid event to higher layer 3511 return; 3512 } 3513 conn->state = RECEIVED_CONNECTION_REQUEST; 3514 // store info about eSCO 3515 if (link_type == HCI_LINK_TYPE_ESCO){ 3516 conn->remote_supported_features[0] |= 1; 3517 } 3518 hci_run(); 3519 break; 3520 3521 case HCI_EVENT_CONNECTION_COMPLETE: 3522 // Connection management 3523 reverse_bd_addr(&packet[5], addr); 3524 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3525 addr_type = BD_ADDR_TYPE_ACL; 3526 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3527 if (conn) { 3528 switch (conn->state){ 3529 // expected states 3530 case ACCEPTED_CONNECTION_REQUEST: 3531 case SENT_CREATE_CONNECTION: 3532 break; 3533 // unexpected state -> ignore 3534 default: 3535 // don't forward event to app 3536 return; 3537 } 3538 if (!packet[2]){ 3539 conn->state = OPEN; 3540 conn->con_handle = little_endian_read_16(packet, 3); 3541 3542 // trigger write supervision timeout if we're master 3543 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3544 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3545 } 3546 3547 // trigger write automatic flush timeout 3548 if (hci_stack->automatic_flush_timeout != 0){ 3549 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3550 } 3551 3552 // restart timer 3553 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3554 btstack_run_loop_add_timer(&conn->timeout); 3555 3556 // trigger remote features for dedicated bonding 3557 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3558 hci_trigger_remote_features_for_connection(conn); 3559 } 3560 3561 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3562 3563 hci_emit_nr_connections_changed(); 3564 } else { 3565 // connection failed 3566 hci_handle_connection_failed(conn, packet[2]); 3567 } 3568 } 3569 break; 3570 3571 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3572 reverse_bd_addr(&packet[5], addr); 3573 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3574 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3575 btstack_assert(conn != NULL); 3576 3577 if (packet[2] != ERROR_CODE_SUCCESS){ 3578 // connection failed, remove entry 3579 hci_handle_connection_failed(conn, packet[2]); 3580 break; 3581 } 3582 3583 conn->state = OPEN; 3584 conn->con_handle = little_endian_read_16(packet, 3); 3585 3586 #ifdef ENABLE_SCO_OVER_HCI 3587 // update SCO 3588 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3589 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3590 } 3591 // trigger can send now 3592 if (hci_have_usb_transport()){ 3593 hci_stack->sco_can_send_now = true; 3594 } 3595 #endif 3596 #ifdef HAVE_SCO_TRANSPORT 3597 // configure sco transport 3598 if (hci_stack->sco_transport != NULL){ 3599 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3600 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3601 } 3602 #endif 3603 break; 3604 3605 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3606 handle = little_endian_read_16(packet, 3); 3607 conn = hci_connection_for_handle(handle); 3608 if (!conn) break; 3609 if (!packet[2]){ 3610 const uint8_t * features = &packet[5]; 3611 hci_handle_remote_features_page_0(conn, features); 3612 3613 // read extended features if possible 3614 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3615 && ((conn->remote_supported_features[0] & 2) != 0)) { 3616 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3617 break; 3618 } 3619 } 3620 hci_handle_remote_features_received(conn); 3621 break; 3622 3623 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3624 handle = little_endian_read_16(packet, 3); 3625 conn = hci_connection_for_handle(handle); 3626 if (!conn) break; 3627 // status = ok, page = 1 3628 if (!packet[2]) { 3629 uint8_t page_number = packet[5]; 3630 uint8_t maximum_page_number = packet[6]; 3631 const uint8_t * features = &packet[7]; 3632 bool done = false; 3633 switch (page_number){ 3634 case 1: 3635 hci_handle_remote_features_page_1(conn, features); 3636 if (maximum_page_number >= 2){ 3637 // get Secure Connections (Controller) from Page 2 if available 3638 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3639 } else { 3640 // otherwise, assume SC (Controller) == SC (Host) 3641 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3642 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3643 } 3644 done = true; 3645 } 3646 break; 3647 case 2: 3648 hci_handle_remote_features_page_2(conn, features); 3649 done = true; 3650 break; 3651 default: 3652 break; 3653 } 3654 if (!done) break; 3655 } 3656 hci_handle_remote_features_received(conn); 3657 break; 3658 3659 case HCI_EVENT_LINK_KEY_REQUEST: 3660 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3661 hci_event_link_key_request_get_bd_addr(packet, addr); 3662 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3663 if (!conn) break; 3664 3665 // lookup link key in db if not cached 3666 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3667 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3668 } 3669 3670 // response sent by hci_run() 3671 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3672 #endif 3673 break; 3674 3675 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3676 hci_event_link_key_request_get_bd_addr(packet, addr); 3677 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3678 if (!conn) break; 3679 3680 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3681 3682 // CVE-2020-26555: ignore NULL link key 3683 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3684 if (btstack_is_null(&packet[8], 16)) break; 3685 3686 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3687 // Change Connection Encryption keeps link key type 3688 if (link_key_type != CHANGED_COMBINATION_KEY){ 3689 conn->link_key_type = link_key_type; 3690 } 3691 3692 // cache link key. link keys stored in little-endian format for legacy reasons 3693 memcpy(&conn->link_key, &packet[8], 16); 3694 3695 // only store link key: 3696 // - if bondable enabled 3697 if (hci_stack->bondable == false) break; 3698 // - if security level sufficient 3699 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3700 // - for SSP, also check if remote side requested bonding as well 3701 if (conn->link_key_type != COMBINATION_KEY){ 3702 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3703 if (!remote_bonding){ 3704 break; 3705 } 3706 } 3707 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3708 break; 3709 } 3710 3711 case HCI_EVENT_PIN_CODE_REQUEST: 3712 hci_event_pin_code_request_get_bd_addr(packet, addr); 3713 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3714 if (!conn) break; 3715 3716 hci_pairing_started(conn, false); 3717 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3718 if (!hci_stack->bondable ){ 3719 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3720 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3721 hci_run(); 3722 return; 3723 } 3724 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3725 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3726 log_info("Level 4 required, but SC not supported -> abort"); 3727 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3728 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3729 hci_run(); 3730 return; 3731 } 3732 break; 3733 3734 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3735 hci_event_io_capability_response_get_bd_addr(packet, addr); 3736 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3737 if (!conn) break; 3738 3739 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3740 hci_pairing_started(conn, true); 3741 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3742 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3743 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3744 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3745 #endif 3746 break; 3747 3748 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3749 hci_event_io_capability_response_get_bd_addr(packet, addr); 3750 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3751 if (!conn) break; 3752 3753 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3754 hci_connection_timestamp(conn); 3755 hci_pairing_started(conn, true); 3756 break; 3757 3758 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3759 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3760 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3761 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3762 if (!conn) break; 3763 3764 hci_connection_timestamp(conn); 3765 3766 hci_pairing_started(conn, true); 3767 3768 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3769 break; 3770 #endif 3771 3772 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3773 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3774 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3775 if (!conn) break; 3776 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3777 if (hci_stack->ssp_auto_accept){ 3778 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3779 }; 3780 } else { 3781 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3782 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3783 // don't forward event to app 3784 hci_run(); 3785 return; 3786 } 3787 break; 3788 3789 case HCI_EVENT_USER_PASSKEY_REQUEST: 3790 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3791 if (hci_stack->ssp_auto_accept){ 3792 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3793 }; 3794 break; 3795 3796 case HCI_EVENT_MODE_CHANGE: 3797 handle = hci_event_mode_change_get_handle(packet); 3798 conn = hci_connection_for_handle(handle); 3799 if (!conn) break; 3800 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3801 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3802 break; 3803 #endif 3804 3805 case HCI_EVENT_ENCRYPTION_CHANGE: 3806 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3807 handle = hci_event_encryption_change_get_connection_handle(packet); 3808 conn = hci_connection_for_handle(handle); 3809 if (!conn) break; 3810 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3811 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3812 if (encryption_enabled){ 3813 if (hci_is_le_connection(conn)){ 3814 // For LE, we accept connection as encrypted 3815 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3816 } 3817 #ifdef ENABLE_CLASSIC 3818 else { 3819 3820 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3821 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3822 bool connected_uses_aes_ccm = encryption_enabled == 2; 3823 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3824 log_info("SC during pairing, but only E0 now -> abort"); 3825 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3826 break; 3827 } 3828 3829 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3830 if (connected_uses_aes_ccm){ 3831 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3832 } 3833 3834 #ifdef ENABLE_TESTING_SUPPORT 3835 // work around for issue with PTS dongle 3836 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3837 #endif 3838 // validate encryption key size 3839 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3840 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3841 // already got encryption key size 3842 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3843 } else { 3844 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3845 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3846 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3847 } else { 3848 // if not, pretend everything is perfect 3849 hci_handle_read_encryption_key_size_complete(conn, 16); 3850 } 3851 } 3852 } 3853 #endif 3854 } else { 3855 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3856 } 3857 } else { 3858 uint8_t status = hci_event_encryption_change_get_status(packet); 3859 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3860 conn->bonding_flags &= ~BONDING_DEDICATED; 3861 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3862 conn->bonding_status = status; 3863 } 3864 } 3865 3866 break; 3867 3868 #ifdef ENABLE_CLASSIC 3869 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3870 handle = hci_event_authentication_complete_get_connection_handle(packet); 3871 conn = hci_connection_for_handle(handle); 3872 if (!conn) break; 3873 3874 // clear authentication active flag 3875 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3876 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3877 3878 // authenticated only if auth status == 0 3879 if (hci_event_authentication_complete_get_status(packet) == 0){ 3880 // authenticated 3881 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3882 3883 // If not already encrypted, start encryption 3884 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3885 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3886 break; 3887 } 3888 } 3889 3890 // emit updated security level 3891 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3892 break; 3893 3894 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3895 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3896 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3897 if (!conn) break; 3898 3899 // treat successfully paired connection as authenticated 3900 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3901 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3902 } 3903 3904 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3905 break; 3906 #endif 3907 3908 // HCI_EVENT_DISCONNECTION_COMPLETE 3909 // has been split, to first notify stack before shutting connection down 3910 // see end of function, too. 3911 case HCI_EVENT_DISCONNECTION_COMPLETE: 3912 if (packet[2]) break; // status != 0 3913 handle = little_endian_read_16(packet, 3); 3914 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3915 if (hci_stack->acl_fragmentation_total_size > 0u) { 3916 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3917 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3918 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3919 hci_stack->acl_fragmentation_total_size = 0; 3920 hci_stack->acl_fragmentation_pos = 0; 3921 if (release_buffer){ 3922 hci_release_packet_buffer(); 3923 } 3924 } 3925 } 3926 3927 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3928 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3929 if (hci_stack->iso_fragmentation_total_size > 0u) { 3930 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3931 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3932 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3933 hci_stack->iso_fragmentation_total_size = 0; 3934 hci_stack->iso_fragmentation_pos = 0; 3935 if (release_buffer){ 3936 hci_release_packet_buffer(); 3937 } 3938 } 3939 } 3940 3941 // finalize iso stream for CIS handle 3942 iso_stream = hci_iso_stream_for_con_handle(handle); 3943 if (iso_stream != NULL){ 3944 hci_iso_stream_finalize(iso_stream); 3945 break; 3946 } 3947 3948 // finalize iso stream(s) for ACL handle 3949 btstack_linked_list_iterator_t it; 3950 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3951 while (btstack_linked_list_iterator_has_next(&it)){ 3952 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3953 if (iso_stream->acl_handle == handle ) { 3954 hci_iso_stream_finalize(iso_stream); 3955 } 3956 } 3957 #endif 3958 3959 conn = hci_connection_for_handle(handle); 3960 if (!conn) break; 3961 #ifdef ENABLE_CLASSIC 3962 // pairing failed if it was ongoing 3963 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3964 #endif 3965 3966 // emit dedicatd bonding event 3967 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3968 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3969 } 3970 3971 // mark connection for shutdown, stop timers, reset state 3972 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3973 hci_connection_stop_timer(conn); 3974 hci_connection_init(conn); 3975 3976 #ifdef ENABLE_BLE 3977 #ifdef ENABLE_LE_PERIPHERAL 3978 // re-enable advertisements for le connections if active 3979 if (hci_is_le_connection(conn)){ 3980 hci_update_advertisements_enabled_for_current_roles(); 3981 } 3982 #endif 3983 #endif 3984 break; 3985 3986 case HCI_EVENT_HARDWARE_ERROR: 3987 log_error("Hardware Error: 0x%02x", packet[2]); 3988 if (hci_stack->hardware_error_callback){ 3989 (*hci_stack->hardware_error_callback)(packet[2]); 3990 } else { 3991 // if no special requests, just reboot stack 3992 hci_power_control_off(); 3993 hci_power_control_on(); 3994 } 3995 break; 3996 3997 #ifdef ENABLE_CLASSIC 3998 case HCI_EVENT_ROLE_CHANGE: 3999 if (packet[2]) break; // status != 0 4000 reverse_bd_addr(&packet[3], addr); 4001 addr_type = BD_ADDR_TYPE_ACL; 4002 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4003 if (!conn) break; 4004 conn->role = (hci_role_t) packet[9]; 4005 break; 4006 #endif 4007 4008 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4009 // release packet buffer only for asynchronous transport and if there are not further fragments 4010 if (hci_transport_synchronous()) { 4011 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4012 return; // instead of break: to avoid re-entering hci_run() 4013 } 4014 hci_stack->acl_fragmentation_tx_active = 0; 4015 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4016 hci_stack->iso_fragmentation_tx_active = 0; 4017 if (hci_stack->iso_fragmentation_total_size) break; 4018 #endif 4019 if (hci_stack->acl_fragmentation_total_size) break; 4020 hci_release_packet_buffer(); 4021 4022 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4023 hci_iso_notify_can_send_now(); 4024 #endif 4025 // L2CAP receives this event via the hci_emit_event below 4026 4027 #ifdef ENABLE_CLASSIC 4028 // For SCO, we do the can_send_now_check here 4029 hci_notify_if_sco_can_send_now(); 4030 #endif 4031 break; 4032 4033 #ifdef ENABLE_CLASSIC 4034 case HCI_EVENT_SCO_CAN_SEND_NOW: 4035 // For SCO, we do the can_send_now_check here 4036 hci_stack->sco_can_send_now = true; 4037 hci_notify_if_sco_can_send_now(); 4038 return; 4039 4040 // explode inquriy results for easier consumption 4041 case HCI_EVENT_INQUIRY_RESULT: 4042 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4043 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4044 gap_inquiry_explode(packet, size); 4045 break; 4046 #endif 4047 4048 #ifdef ENABLE_BLE 4049 case HCI_EVENT_LE_META: 4050 switch (packet[2]){ 4051 #ifdef ENABLE_LE_CENTRAL 4052 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4053 if (!hci_stack->le_scanning_enabled) break; 4054 le_handle_advertisement_report(packet, size); 4055 break; 4056 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4057 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4058 if (!hci_stack->le_scanning_enabled) break; 4059 le_handle_extended_advertisement_report(packet, size); 4060 break; 4061 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4062 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4063 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4064 break; 4065 #endif 4066 #endif 4067 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4068 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4069 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4070 event_handle_le_connection_complete(packet); 4071 break; 4072 4073 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4074 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4075 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4076 conn = hci_connection_for_handle(handle); 4077 if (!conn) break; 4078 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4079 break; 4080 4081 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4082 // connection 4083 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4084 conn = hci_connection_for_handle(handle); 4085 if (conn) { 4086 // read arguments 4087 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4088 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4089 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4090 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4091 4092 // validate against current connection parameter range 4093 le_connection_parameter_range_t existing_range; 4094 gap_get_connection_parameter_range(&existing_range); 4095 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4096 if (update_parameter){ 4097 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4098 conn->le_conn_interval_min = le_conn_interval_min; 4099 conn->le_conn_interval_max = le_conn_interval_max; 4100 conn->le_conn_latency = le_conn_latency; 4101 conn->le_supervision_timeout = le_supervision_timeout; 4102 } else { 4103 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4104 } 4105 } 4106 break; 4107 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4108 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4109 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4110 conn = hci_connection_for_handle(handle); 4111 if (conn) { 4112 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4113 } 4114 break; 4115 #endif 4116 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4117 case HCI_SUBEVENT_LE_CIS_REQUEST: 4118 // incoming CIS request, allocate iso stream object and cache metadata 4119 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4120 hci_subevent_le_cis_request_get_cig_id(packet), 4121 hci_subevent_le_cis_request_get_cis_id(packet)); 4122 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4123 if (iso_stream != NULL){ 4124 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4125 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4126 } 4127 break; 4128 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4129 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4130 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4131 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4132 iso_stream = hci_iso_stream_for_con_handle(handle); 4133 btstack_assert(iso_stream != NULL); 4134 // track SDU 4135 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4136 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4137 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4138 // CIS Accept by Peripheral 4139 if (status == ERROR_CODE_SUCCESS){ 4140 if (iso_stream->max_sdu_p_to_c > 0){ 4141 // we're peripheral and we will send data 4142 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4143 } else { 4144 // we're peripheral and we will only receive data 4145 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4146 } 4147 } else { 4148 hci_cis_handle_created(iso_stream, status); 4149 } 4150 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4151 } else { 4152 // CIG Setup by Central 4153 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4154 btstack_assert(cig != NULL); 4155 // update iso stream state 4156 if (status == ERROR_CODE_SUCCESS){ 4157 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4158 } else { 4159 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4160 } 4161 // update cig state 4162 uint8_t i; 4163 for (i=0;i<cig->num_cis;i++){ 4164 if (cig->cis_con_handles[i] == handle){ 4165 cig->cis_setup_active[i] = false; 4166 if (status == ERROR_CODE_SUCCESS){ 4167 cig->cis_established[i] = true; 4168 } else { 4169 hci_cis_handle_created(iso_stream, status); 4170 } 4171 } 4172 } 4173 4174 // trigger iso path setup if complete 4175 bool cis_setup_active = false; 4176 for (i=0;i<cig->num_cis;i++){ 4177 cis_setup_active |= cig->cis_setup_active[i]; 4178 } 4179 if (cis_setup_active == false){ 4180 cig->state_vars.next_cis = 0; 4181 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4182 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4183 } 4184 } 4185 } 4186 break; 4187 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4188 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4189 big = hci_big_for_handle(packet[4]); 4190 if (big != NULL){ 4191 uint8_t status = packet[3]; 4192 if (status == ERROR_CODE_SUCCESS){ 4193 // store bis_con_handles and trigger iso path setup 4194 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4195 uint8_t i; 4196 for (i=0;i<num_bis;i++){ 4197 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4198 big->bis_con_handles[i] = bis_handle; 4199 // assign bis handle 4200 btstack_linked_list_iterator_t it; 4201 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4202 while (btstack_linked_list_iterator_has_next(&it)){ 4203 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4204 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4205 (iso_stream->group_id == big->big_handle)){ 4206 iso_stream->cis_handle = bis_handle; 4207 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4208 break; 4209 } 4210 } 4211 } 4212 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4213 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4214 big->state_vars.next_bis = 0; 4215 } 4216 } else { 4217 // create BIG failed or has been stopped by us 4218 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4219 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4220 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4221 hci_emit_big_created(big, status); 4222 } else { 4223 hci_emit_big_terminated(big); 4224 } 4225 } 4226 } 4227 break; 4228 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4229 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4230 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4231 if (big != NULL){ 4232 // finalize associated ISO streams 4233 btstack_linked_list_iterator_t it; 4234 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4235 while (btstack_linked_list_iterator_has_next(&it)){ 4236 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4237 if (iso_stream->group_id == big->big_handle){ 4238 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4239 btstack_linked_list_iterator_remove(&it); 4240 btstack_memory_hci_iso_stream_free(iso_stream); 4241 } 4242 } 4243 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4244 switch (big->state){ 4245 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4246 hci_emit_big_created(big, big->state_vars.status); 4247 break; 4248 default: 4249 hci_emit_big_terminated(big); 4250 break; 4251 } 4252 } 4253 break; 4254 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4255 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4256 big_sync = hci_big_sync_for_handle(packet[4]); 4257 if (big_sync != NULL){ 4258 uint8_t status = packet[3]; 4259 uint8_t big_handle = packet[4]; 4260 if (status == ERROR_CODE_SUCCESS){ 4261 // store bis_con_handles and trigger iso path setup 4262 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4263 uint8_t i; 4264 for (i=0;i<num_bis;i++){ 4265 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4266 } 4267 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4268 // trigger iso path setup 4269 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4270 big_sync->state_vars.next_bis = 0; 4271 } 4272 } else { 4273 // create BIG Sync failed or has been stopped by us 4274 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4275 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4276 hci_emit_big_sync_created(big_sync, status); 4277 } else { 4278 hci_emit_big_sync_stopped(big_handle); 4279 } 4280 } 4281 } 4282 break; 4283 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4284 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4285 big_sync = hci_big_sync_for_handle(packet[4]); 4286 if (big_sync != NULL){ 4287 uint8_t big_handle = packet[4]; 4288 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4289 hci_emit_big_sync_stopped(big_handle); 4290 } 4291 break; 4292 #endif 4293 default: 4294 break; 4295 } 4296 break; 4297 #endif 4298 case HCI_EVENT_VENDOR_SPECIFIC: 4299 // Vendor specific commands often create vendor specific event instead of num completed packets 4300 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4301 switch (hci_stack->manufacturer){ 4302 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4303 hci_stack->num_cmd_packets = 1; 4304 break; 4305 default: 4306 break; 4307 } 4308 break; 4309 default: 4310 break; 4311 } 4312 4313 handle_event_for_current_stack_state(packet, size); 4314 4315 // notify upper stack 4316 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4317 4318 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4319 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4320 handle = little_endian_read_16(packet, 3); 4321 hci_connection_t * aConn = hci_connection_for_handle(handle); 4322 // discard connection if app did not trigger a reconnect in the event handler 4323 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4324 hci_shutdown_connection(aConn); 4325 } 4326 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4327 hci_controller_dump_packets(); 4328 #endif 4329 } 4330 4331 // execute main loop 4332 hci_run(); 4333 } 4334 4335 #ifdef ENABLE_CLASSIC 4336 4337 #ifdef ENABLE_SCO_OVER_HCI 4338 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4339 static void sco_schedule_tx(hci_connection_t * conn); 4340 4341 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4342 log_debug("SCO TX Timeout"); 4343 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4344 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4345 if (!conn) return; 4346 4347 // trigger send 4348 conn->sco_tx_ready = 1; 4349 // extra packet if CVSD but SCO buffer is too short 4350 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4351 conn->sco_tx_ready++; 4352 } 4353 hci_notify_if_sco_can_send_now(); 4354 } 4355 4356 4357 #define SCO_TX_AFTER_RX_MS (6) 4358 4359 static void sco_schedule_tx(hci_connection_t * conn){ 4360 4361 uint32_t now = btstack_run_loop_get_time_ms(); 4362 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4363 int time_delta_ms = sco_tx_ms - now; 4364 4365 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4366 4367 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4368 btstack_run_loop_remove_timer(timer); 4369 btstack_run_loop_set_timer(timer, time_delta_ms); 4370 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4371 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4372 btstack_run_loop_add_timer(timer); 4373 } 4374 #endif 4375 4376 static void sco_handler(uint8_t * packet, uint16_t size){ 4377 // lookup connection struct 4378 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4379 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4380 if (!conn) return; 4381 4382 #ifdef ENABLE_SCO_OVER_HCI 4383 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4384 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4385 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4386 packet[2] = 0x3c; 4387 memmove(&packet[3], &packet[23], 63); 4388 size = 63; 4389 } 4390 } 4391 4392 if (hci_have_usb_transport()){ 4393 // Nothing to do 4394 } else { 4395 // 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); 4396 if (hci_stack->synchronous_flow_control_enabled == 0){ 4397 uint32_t now = btstack_run_loop_get_time_ms(); 4398 4399 if (!conn->sco_rx_valid){ 4400 // ignore first 10 packets 4401 conn->sco_rx_count++; 4402 // log_debug("sco rx count %u", conn->sco_rx_count); 4403 if (conn->sco_rx_count == 10) { 4404 // use first timestamp as is and pretent it just started 4405 conn->sco_rx_ms = now; 4406 conn->sco_rx_valid = 1; 4407 conn->sco_rx_count = 0; 4408 sco_schedule_tx(conn); 4409 } 4410 } else { 4411 // track expected arrival timme 4412 conn->sco_rx_count++; 4413 conn->sco_rx_ms += 7; 4414 int delta = (int32_t) (now - conn->sco_rx_ms); 4415 if (delta > 0){ 4416 conn->sco_rx_ms++; 4417 } 4418 // log_debug("sco rx %u", conn->sco_rx_ms); 4419 sco_schedule_tx(conn); 4420 } 4421 } 4422 } 4423 #endif 4424 4425 // deliver to app 4426 if (hci_stack->sco_packet_handler) { 4427 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4428 } 4429 4430 #ifdef HAVE_SCO_TRANSPORT 4431 // We can send one packet for each received packet 4432 conn->sco_tx_ready++; 4433 hci_notify_if_sco_can_send_now(); 4434 #endif 4435 4436 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4437 conn->num_packets_completed++; 4438 hci_stack->host_completed_packets = 1; 4439 hci_run(); 4440 #endif 4441 } 4442 #endif 4443 4444 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4445 hci_dump_packet(packet_type, 1, packet, size); 4446 switch (packet_type) { 4447 case HCI_EVENT_PACKET: 4448 event_handler(packet, size); 4449 break; 4450 case HCI_ACL_DATA_PACKET: 4451 acl_handler(packet, size); 4452 break; 4453 #ifdef ENABLE_CLASSIC 4454 case HCI_SCO_DATA_PACKET: 4455 sco_handler(packet, size); 4456 break; 4457 #endif 4458 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4459 case HCI_ISO_DATA_PACKET: 4460 hci_iso_packet_handler(packet, size); 4461 break; 4462 #endif 4463 default: 4464 break; 4465 } 4466 } 4467 4468 /** 4469 * @brief Add event packet handler. 4470 */ 4471 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4472 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4473 } 4474 4475 /** 4476 * @brief Remove event packet handler. 4477 */ 4478 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4479 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4480 } 4481 4482 /** Register HCI packet handlers */ 4483 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4484 hci_stack->acl_packet_handler = handler; 4485 } 4486 4487 #ifdef ENABLE_CLASSIC 4488 /** 4489 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4490 */ 4491 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4492 hci_stack->sco_packet_handler = handler; 4493 } 4494 #endif 4495 4496 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4497 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4498 hci_stack->iso_packet_handler = handler; 4499 } 4500 #endif 4501 4502 static void hci_state_reset(void){ 4503 // no connections yet 4504 hci_stack->connections = NULL; 4505 4506 // keep discoverable/connectable as this has been requested by the client(s) 4507 // hci_stack->discoverable = 0; 4508 // hci_stack->connectable = 0; 4509 // hci_stack->bondable = 1; 4510 // hci_stack->own_addr_type = 0; 4511 4512 // buffer is free 4513 hci_stack->hci_packet_buffer_reserved = false; 4514 4515 // no pending cmds 4516 hci_stack->decline_reason = 0; 4517 4518 hci_stack->secure_connections_active = false; 4519 4520 #ifdef ENABLE_CLASSIC 4521 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4522 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4523 4524 hci_stack->gap_tasks_classic = 4525 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4526 GAP_TASK_SET_CLASS_OF_DEVICE | 4527 GAP_TASK_SET_LOCAL_NAME | 4528 GAP_TASK_SET_EIR_DATA | 4529 GAP_TASK_WRITE_SCAN_ENABLE | 4530 GAP_TASK_WRITE_PAGE_TIMEOUT; 4531 #endif 4532 4533 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4534 hci_stack->classic_read_local_oob_data = false; 4535 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4536 #endif 4537 4538 // LE 4539 #ifdef ENABLE_BLE 4540 memset(hci_stack->le_random_address, 0, 6); 4541 hci_stack->le_random_address_set = 0; 4542 #endif 4543 #ifdef ENABLE_LE_CENTRAL 4544 hci_stack->le_scanning_active = false; 4545 hci_stack->le_scanning_param_update = true; 4546 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4547 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4548 hci_stack->le_whitelist_capacity = 0; 4549 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4550 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4551 #endif 4552 #endif 4553 #ifdef ENABLE_LE_PERIPHERAL 4554 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4555 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4556 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4557 } 4558 if (hci_stack->le_advertisements_data != NULL){ 4559 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4560 } 4561 #endif 4562 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4563 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4564 #endif 4565 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4566 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4567 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4568 #endif 4569 } 4570 4571 #ifdef ENABLE_CLASSIC 4572 /** 4573 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4574 */ 4575 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4576 // store and open remote device db 4577 hci_stack->link_key_db = link_key_db; 4578 if (hci_stack->link_key_db) { 4579 hci_stack->link_key_db->open(); 4580 } 4581 } 4582 #endif 4583 4584 void hci_init(const hci_transport_t *transport, const void *config){ 4585 4586 #ifdef HAVE_MALLOC 4587 if (!hci_stack) { 4588 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4589 } 4590 #else 4591 hci_stack = &hci_stack_static; 4592 #endif 4593 memset(hci_stack, 0, sizeof(hci_stack_t)); 4594 4595 // reference to use transport layer implementation 4596 hci_stack->hci_transport = transport; 4597 4598 // reference to used config 4599 hci_stack->config = config; 4600 4601 // setup pointer for outgoing packet buffer 4602 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4603 4604 // max acl payload size defined in config.h 4605 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4606 4607 // register packet handlers with transport 4608 transport->register_packet_handler(&packet_handler); 4609 4610 hci_stack->state = HCI_STATE_OFF; 4611 4612 // class of device 4613 hci_stack->class_of_device = 0x007a020c; // Smartphone 4614 4615 // bondable by default 4616 hci_stack->bondable = 1; 4617 4618 #ifdef ENABLE_CLASSIC 4619 // classic name 4620 hci_stack->local_name = default_classic_name; 4621 4622 // Master slave policy 4623 hci_stack->master_slave_policy = 1; 4624 4625 // Allow Role Switch 4626 hci_stack->allow_role_switch = 1; 4627 4628 // Default / minimum security level = 2 4629 hci_stack->gap_security_level = LEVEL_2; 4630 4631 // Default Security Mode 4 4632 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4633 4634 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4635 hci_stack->gap_required_encyrption_key_size = 7; 4636 4637 // Link Supervision Timeout 4638 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4639 4640 #endif 4641 4642 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4643 hci_stack->ssp_enable = 1; 4644 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4645 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4646 hci_stack->ssp_auto_accept = 1; 4647 4648 // Secure Connections: enable (requires support from Controller) 4649 hci_stack->secure_connections_enable = true; 4650 4651 // voice setting - signed 16 bit pcm data with CVSD over the air 4652 hci_stack->sco_voice_setting = 0x60; 4653 4654 #ifdef ENABLE_LE_CENTRAL 4655 // connection parameter to use for outgoing connections 4656 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4657 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4658 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4659 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4660 hci_stack->le_connection_latency = 4; // 4 4661 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4662 hci_stack->le_minimum_ce_length = 0; // 0 ms 4663 hci_stack->le_maximum_ce_length = 0; // 0 ms 4664 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4665 4666 // default LE Scanning 4667 hci_stack->le_scan_type = 0x01; // active 4668 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4669 hci_stack->le_scan_window = 0x30; // 30 ms 4670 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4671 #endif 4672 4673 #ifdef ENABLE_LE_PERIPHERAL 4674 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4675 4676 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4677 hci_stack->le_advertisements_interval_min = 0x0800; 4678 hci_stack->le_advertisements_interval_max = 0x0800; 4679 hci_stack->le_advertisements_type = 0; 4680 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4681 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4682 hci_stack->le_advertisements_channel_map = 0x07; 4683 hci_stack->le_advertisements_filter_policy = 0; 4684 #endif 4685 4686 // connection parameter range used to answer connection parameter update requests in l2cap 4687 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4688 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4689 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4690 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4691 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4692 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4693 4694 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4695 hci_stack->iso_packets_to_queue = 1; 4696 #endif 4697 4698 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4699 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4700 #endif 4701 4702 hci_state_reset(); 4703 } 4704 4705 void hci_deinit(void){ 4706 btstack_run_loop_remove_timer(&hci_stack->timeout); 4707 #ifdef HAVE_MALLOC 4708 if (hci_stack) { 4709 free(hci_stack); 4710 } 4711 #endif 4712 hci_stack = NULL; 4713 4714 #ifdef ENABLE_CLASSIC 4715 disable_l2cap_timeouts = 0; 4716 #endif 4717 } 4718 4719 /** 4720 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4721 */ 4722 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4723 hci_stack->chipset = chipset_driver; 4724 4725 // reset chipset driver - init is also called on power_up 4726 if (hci_stack->chipset && hci_stack->chipset->init){ 4727 hci_stack->chipset->init(hci_stack->config); 4728 } 4729 } 4730 4731 void hci_enable_custom_pre_init(void){ 4732 hci_stack->chipset_pre_init = true; 4733 } 4734 4735 /** 4736 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4737 */ 4738 void hci_set_control(const btstack_control_t *hardware_control){ 4739 // references to used control implementation 4740 hci_stack->control = hardware_control; 4741 // init with transport config 4742 hardware_control->init(hci_stack->config); 4743 } 4744 4745 static void hci_discard_connections(void){ 4746 btstack_linked_list_iterator_t it; 4747 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4748 while (btstack_linked_list_iterator_has_next(&it)){ 4749 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4750 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4751 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4752 hci_shutdown_connection(connection); 4753 } 4754 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4755 while (hci_stack->iso_streams != NULL){ 4756 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4757 } 4758 #endif 4759 } 4760 4761 void hci_close(void){ 4762 4763 #ifdef ENABLE_CLASSIC 4764 // close remote device db 4765 if (hci_stack->link_key_db) { 4766 hci_stack->link_key_db->close(); 4767 } 4768 #endif 4769 4770 hci_discard_connections(); 4771 4772 hci_power_control(HCI_POWER_OFF); 4773 4774 #ifdef HAVE_MALLOC 4775 free(hci_stack); 4776 #endif 4777 hci_stack = NULL; 4778 } 4779 4780 #ifdef HAVE_SCO_TRANSPORT 4781 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4782 hci_stack->sco_transport = sco_transport; 4783 sco_transport->register_packet_handler(&packet_handler); 4784 } 4785 #endif 4786 4787 #ifdef ENABLE_CLASSIC 4788 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4789 // validate ranage and set 4790 if (encryption_key_size < 7) return; 4791 if (encryption_key_size > 16) return; 4792 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4793 } 4794 4795 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4796 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4797 hci_stack->gap_security_mode = security_mode; 4798 return ERROR_CODE_SUCCESS; 4799 } else { 4800 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4801 } 4802 } 4803 4804 gap_security_mode_t gap_get_security_mode(void){ 4805 return hci_stack->gap_security_mode; 4806 } 4807 4808 void gap_set_security_level(gap_security_level_t security_level){ 4809 hci_stack->gap_security_level = security_level; 4810 } 4811 4812 gap_security_level_t gap_get_security_level(void){ 4813 if (hci_stack->gap_secure_connections_only_mode){ 4814 return LEVEL_4; 4815 } 4816 return hci_stack->gap_security_level; 4817 } 4818 4819 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4820 hci_stack->gap_minimal_service_security_level = security_level; 4821 } 4822 4823 void gap_set_secure_connections_only_mode(bool enable){ 4824 hci_stack->gap_secure_connections_only_mode = enable; 4825 } 4826 4827 bool gap_get_secure_connections_only_mode(void){ 4828 return hci_stack->gap_secure_connections_only_mode; 4829 } 4830 #endif 4831 4832 #ifdef ENABLE_CLASSIC 4833 void gap_set_class_of_device(uint32_t class_of_device){ 4834 hci_stack->class_of_device = class_of_device; 4835 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4836 hci_run(); 4837 } 4838 4839 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4840 hci_stack->default_link_policy_settings = default_link_policy_settings; 4841 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4842 hci_run(); 4843 } 4844 4845 void gap_set_allow_role_switch(bool allow_role_switch){ 4846 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4847 } 4848 4849 uint8_t hci_get_allow_role_switch(void){ 4850 return hci_stack->allow_role_switch; 4851 } 4852 4853 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4854 hci_stack->link_supervision_timeout = link_supervision_timeout; 4855 } 4856 4857 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4858 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4859 } 4860 4861 uint16_t hci_automatic_flush_timeout(void){ 4862 return hci_stack->automatic_flush_timeout; 4863 } 4864 4865 void hci_disable_l2cap_timeout_check(void){ 4866 disable_l2cap_timeouts = 1; 4867 } 4868 #endif 4869 4870 #ifndef HAVE_HOST_CONTROLLER_API 4871 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4872 void hci_set_bd_addr(bd_addr_t addr){ 4873 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4874 hci_stack->custom_bd_addr_set = 1; 4875 } 4876 #endif 4877 4878 // State-Module-Driver overview 4879 // state module low-level 4880 // HCI_STATE_OFF off close 4881 // HCI_STATE_INITIALIZING, on open 4882 // HCI_STATE_WORKING, on open 4883 // HCI_STATE_HALTING, on open 4884 // HCI_STATE_SLEEPING, off/sleep close 4885 // HCI_STATE_FALLING_ASLEEP on open 4886 4887 static int hci_power_control_on(void){ 4888 4889 // power on 4890 int err = 0; 4891 if (hci_stack->control && hci_stack->control->on){ 4892 err = (*hci_stack->control->on)(); 4893 } 4894 if (err){ 4895 log_error( "POWER_ON failed"); 4896 hci_emit_hci_open_failed(); 4897 return err; 4898 } 4899 4900 // int chipset driver 4901 if (hci_stack->chipset && hci_stack->chipset->init){ 4902 hci_stack->chipset->init(hci_stack->config); 4903 } 4904 4905 // init transport 4906 if (hci_stack->hci_transport->init){ 4907 hci_stack->hci_transport->init(hci_stack->config); 4908 } 4909 4910 // open transport 4911 err = hci_stack->hci_transport->open(); 4912 if (err){ 4913 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4914 if (hci_stack->control && hci_stack->control->off){ 4915 (*hci_stack->control->off)(); 4916 } 4917 hci_emit_hci_open_failed(); 4918 return err; 4919 } 4920 return 0; 4921 } 4922 4923 static void hci_power_control_off(void){ 4924 4925 log_info("hci_power_control_off"); 4926 4927 // close low-level device 4928 hci_stack->hci_transport->close(); 4929 4930 log_info("hci_power_control_off - hci_transport closed"); 4931 4932 // power off 4933 if (hci_stack->control && hci_stack->control->off){ 4934 (*hci_stack->control->off)(); 4935 } 4936 4937 log_info("hci_power_control_off - control closed"); 4938 4939 hci_stack->state = HCI_STATE_OFF; 4940 } 4941 4942 static void hci_power_control_sleep(void){ 4943 4944 log_info("hci_power_control_sleep"); 4945 4946 #if 0 4947 // don't close serial port during sleep 4948 4949 // close low-level device 4950 hci_stack->hci_transport->close(hci_stack->config); 4951 #endif 4952 4953 // sleep mode 4954 if (hci_stack->control && hci_stack->control->sleep){ 4955 (*hci_stack->control->sleep)(); 4956 } 4957 4958 hci_stack->state = HCI_STATE_SLEEPING; 4959 } 4960 4961 static int hci_power_control_wake(void){ 4962 4963 log_info("hci_power_control_wake"); 4964 4965 // wake on 4966 if (hci_stack->control && hci_stack->control->wake){ 4967 (*hci_stack->control->wake)(); 4968 } 4969 4970 #if 0 4971 // open low-level device 4972 int err = hci_stack->hci_transport->open(hci_stack->config); 4973 if (err){ 4974 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4975 if (hci_stack->control && hci_stack->control->off){ 4976 (*hci_stack->control->off)(); 4977 } 4978 hci_emit_hci_open_failed(); 4979 return err; 4980 } 4981 #endif 4982 4983 return 0; 4984 } 4985 4986 static void hci_power_enter_initializing_state(void){ 4987 // set up state machine 4988 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4989 hci_stack->hci_packet_buffer_reserved = false; 4990 hci_stack->state = HCI_STATE_INITIALIZING; 4991 4992 if (hci_stack->chipset_pre_init) { 4993 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 4994 } else { 4995 hci_stack->substate = HCI_INIT_SEND_RESET; 4996 } 4997 } 4998 4999 static void hci_power_enter_halting_state(void){ 5000 #ifdef ENABLE_BLE 5001 // drop entries scheduled for removal, mark others for re-adding 5002 btstack_linked_list_iterator_t it; 5003 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5004 while (btstack_linked_list_iterator_has_next(&it)){ 5005 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5006 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5007 btstack_linked_list_iterator_remove(&it); 5008 btstack_memory_whitelist_entry_free(entry); 5009 } else { 5010 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5011 } 5012 } 5013 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5014 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5015 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5016 while (btstack_linked_list_iterator_has_next(&it)){ 5017 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5018 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5019 btstack_linked_list_iterator_remove(&it); 5020 btstack_memory_periodic_advertiser_list_entry_free(entry); 5021 } else { 5022 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5023 continue; 5024 } 5025 } 5026 #endif 5027 #endif 5028 // see hci_run 5029 hci_stack->state = HCI_STATE_HALTING; 5030 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5031 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5032 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5033 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5034 btstack_run_loop_add_timer(&hci_stack->timeout); 5035 } 5036 5037 // returns error 5038 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5039 int err; 5040 switch (power_mode){ 5041 case HCI_POWER_ON: 5042 err = hci_power_control_on(); 5043 if (err != 0) { 5044 log_error("hci_power_control_on() error %d", err); 5045 return err; 5046 } 5047 hci_power_enter_initializing_state(); 5048 break; 5049 case HCI_POWER_OFF: 5050 // do nothing 5051 break; 5052 case HCI_POWER_SLEEP: 5053 // do nothing (with SLEEP == OFF) 5054 break; 5055 default: 5056 btstack_assert(false); 5057 break; 5058 } 5059 return ERROR_CODE_SUCCESS; 5060 } 5061 5062 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5063 switch (power_mode){ 5064 case HCI_POWER_ON: 5065 // do nothing 5066 break; 5067 case HCI_POWER_OFF: 5068 // no connections yet, just turn it off 5069 hci_power_control_off(); 5070 break; 5071 case HCI_POWER_SLEEP: 5072 // no connections yet, just turn it off 5073 hci_power_control_sleep(); 5074 break; 5075 default: 5076 btstack_assert(false); 5077 break; 5078 } 5079 return ERROR_CODE_SUCCESS; 5080 } 5081 5082 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5083 switch (power_mode){ 5084 case HCI_POWER_ON: 5085 // do nothing 5086 break; 5087 case HCI_POWER_OFF: 5088 hci_power_enter_halting_state(); 5089 break; 5090 case HCI_POWER_SLEEP: 5091 // see hci_run 5092 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5093 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5094 break; 5095 default: 5096 btstack_assert(false); 5097 break; 5098 } 5099 return ERROR_CODE_SUCCESS; 5100 } 5101 5102 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5103 switch (power_mode){ 5104 case HCI_POWER_ON: 5105 hci_power_enter_initializing_state(); 5106 break; 5107 case HCI_POWER_OFF: 5108 // do nothing 5109 break; 5110 case HCI_POWER_SLEEP: 5111 // see hci_run 5112 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5113 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5114 break; 5115 default: 5116 btstack_assert(false); 5117 break; 5118 } 5119 return ERROR_CODE_SUCCESS; 5120 } 5121 5122 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5123 switch (power_mode){ 5124 case HCI_POWER_ON: 5125 hci_power_enter_initializing_state(); 5126 break; 5127 case HCI_POWER_OFF: 5128 hci_power_enter_halting_state(); 5129 break; 5130 case HCI_POWER_SLEEP: 5131 // do nothing 5132 break; 5133 default: 5134 btstack_assert(false); 5135 break; 5136 } 5137 return ERROR_CODE_SUCCESS; 5138 } 5139 5140 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5141 int err; 5142 switch (power_mode){ 5143 case HCI_POWER_ON: 5144 err = hci_power_control_wake(); 5145 if (err) return err; 5146 hci_power_enter_initializing_state(); 5147 break; 5148 case HCI_POWER_OFF: 5149 hci_power_enter_halting_state(); 5150 break; 5151 case HCI_POWER_SLEEP: 5152 // do nothing 5153 break; 5154 default: 5155 btstack_assert(false); 5156 break; 5157 } 5158 return ERROR_CODE_SUCCESS; 5159 } 5160 5161 int hci_power_control(HCI_POWER_MODE power_mode){ 5162 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5163 btstack_run_loop_remove_timer(&hci_stack->timeout); 5164 int err = 0; 5165 switch (hci_stack->state){ 5166 case HCI_STATE_OFF: 5167 err = hci_power_control_state_off(power_mode); 5168 break; 5169 case HCI_STATE_INITIALIZING: 5170 err = hci_power_control_state_initializing(power_mode); 5171 break; 5172 case HCI_STATE_WORKING: 5173 err = hci_power_control_state_working(power_mode); 5174 break; 5175 case HCI_STATE_HALTING: 5176 err = hci_power_control_state_halting(power_mode); 5177 break; 5178 case HCI_STATE_FALLING_ASLEEP: 5179 err = hci_power_control_state_falling_asleep(power_mode); 5180 break; 5181 case HCI_STATE_SLEEPING: 5182 err = hci_power_control_state_sleeping(power_mode); 5183 break; 5184 default: 5185 btstack_assert(false); 5186 break; 5187 } 5188 if (err != 0){ 5189 return err; 5190 } 5191 5192 // create internal event 5193 hci_emit_state(); 5194 5195 // trigger next/first action 5196 hci_run(); 5197 5198 return 0; 5199 } 5200 5201 5202 static void hci_halting_run(void) { 5203 5204 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5205 5206 hci_connection_t *connection; 5207 #ifdef ENABLE_BLE 5208 #ifdef ENABLE_LE_PERIPHERAL 5209 bool stop_advertismenets; 5210 #endif 5211 #endif 5212 5213 switch (hci_stack->substate) { 5214 case HCI_HALTING_CLASSIC_STOP: 5215 #ifdef ENABLE_CLASSIC 5216 if (!hci_can_send_command_packet_now()) return; 5217 5218 if (hci_stack->connectable || hci_stack->discoverable){ 5219 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5220 hci_send_cmd(&hci_write_scan_enable, 0); 5221 return; 5222 } 5223 #endif 5224 /* fall through */ 5225 5226 case HCI_HALTING_LE_ADV_STOP: 5227 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5228 5229 #ifdef ENABLE_BLE 5230 #ifdef ENABLE_LE_PERIPHERAL 5231 if (!hci_can_send_command_packet_now()) return; 5232 5233 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5234 5235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5236 if (hci_extended_advertising_supported()){ 5237 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5238 btstack_linked_list_iterator_t it; 5239 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5240 // stop all periodic advertisements and check if an extended set is active 5241 while (btstack_linked_list_iterator_has_next(&it)){ 5242 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5243 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5244 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5245 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5246 return; 5247 } 5248 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5249 stop_advertismenets = true; 5250 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5251 } 5252 } 5253 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5254 if (stop_advertismenets){ 5255 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5256 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5257 return; 5258 } 5259 } else 5260 #else /* ENABLE_LE_PERIPHERAL */ 5261 { 5262 if (stop_advertismenets) { 5263 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5264 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5265 return; 5266 } 5267 } 5268 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5269 #endif /* ENABLE_LE_PERIPHERAL */ 5270 #endif /* ENABLE_BLE */ 5271 5272 /* fall through */ 5273 5274 case HCI_HALTING_LE_SCAN_STOP: 5275 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5276 if (!hci_can_send_command_packet_now()) return; 5277 5278 #ifdef ENABLE_BLE 5279 #ifdef ENABLE_LE_CENTRAL 5280 if (hci_stack->le_scanning_active){ 5281 hci_le_scan_stop(); 5282 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5283 return; 5284 } 5285 #endif 5286 #endif 5287 5288 /* fall through */ 5289 5290 case HCI_HALTING_DISCONNECT_ALL: 5291 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5292 if (!hci_can_send_command_packet_now()) return; 5293 5294 // close all open connections 5295 connection = (hci_connection_t *) hci_stack->connections; 5296 if (connection) { 5297 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5298 5299 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5300 5301 // check state 5302 switch(connection->state) { 5303 case SENT_DISCONNECT: 5304 case RECEIVED_DISCONNECTION_COMPLETE: 5305 // wait until connection is gone 5306 return; 5307 default: 5308 break; 5309 } 5310 5311 // finally, send the disconnect command 5312 connection->state = SENT_DISCONNECT; 5313 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5314 return; 5315 } 5316 5317 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5318 // stop BIGs and BIG Syncs 5319 if (hci_stack->le_audio_bigs != NULL){ 5320 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5321 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5322 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5323 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5324 return; 5325 } 5326 if (hci_stack->le_audio_big_syncs != NULL){ 5327 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5328 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5329 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5330 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5331 return; 5332 } 5333 #endif 5334 5335 btstack_run_loop_remove_timer(&hci_stack->timeout); 5336 5337 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5338 log_info("HCI_STATE_HALTING: wait 50 ms"); 5339 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5340 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5341 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5342 btstack_run_loop_add_timer(&hci_stack->timeout); 5343 break; 5344 5345 case HCI_HALTING_W4_CLOSE_TIMER: 5346 // keep waiting 5347 break; 5348 5349 case HCI_HALTING_CLOSE: 5350 // close left over connections (that had not been properly closed before) 5351 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5352 hci_discard_connections(); 5353 5354 log_info("HCI_STATE_HALTING, calling off"); 5355 5356 // switch mode 5357 hci_power_control_off(); 5358 5359 log_info("HCI_STATE_HALTING, emitting state"); 5360 hci_emit_state(); 5361 log_info("HCI_STATE_HALTING, done"); 5362 break; 5363 5364 default: 5365 break; 5366 } 5367 }; 5368 5369 static void hci_falling_asleep_run(void){ 5370 hci_connection_t * connection; 5371 switch(hci_stack->substate) { 5372 case HCI_FALLING_ASLEEP_DISCONNECT: 5373 log_info("HCI_STATE_FALLING_ASLEEP"); 5374 // close all open connections 5375 connection = (hci_connection_t *) hci_stack->connections; 5376 if (connection){ 5377 5378 // send disconnect 5379 if (!hci_can_send_command_packet_now()) return; 5380 5381 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5382 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5383 5384 // send disconnected event right away - causes higher layer connections to get closed, too. 5385 hci_shutdown_connection(connection); 5386 return; 5387 } 5388 5389 if (hci_classic_supported()){ 5390 // disable page and inquiry scan 5391 if (!hci_can_send_command_packet_now()) return; 5392 5393 log_info("HCI_STATE_HALTING, disabling inq scans"); 5394 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5395 5396 // continue in next sub state 5397 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5398 break; 5399 } 5400 5401 /* fall through */ 5402 5403 case HCI_FALLING_ASLEEP_COMPLETE: 5404 log_info("HCI_STATE_HALTING, calling sleep"); 5405 // switch mode 5406 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5407 hci_emit_state(); 5408 break; 5409 5410 default: 5411 break; 5412 } 5413 } 5414 5415 #ifdef ENABLE_CLASSIC 5416 5417 static void hci_update_scan_enable(void){ 5418 // 2 = page scan, 1 = inq scan 5419 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5420 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5421 hci_run(); 5422 } 5423 5424 void gap_discoverable_control(uint8_t enable){ 5425 if (enable) enable = 1; // normalize argument 5426 5427 if (hci_stack->discoverable == enable){ 5428 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5429 return; 5430 } 5431 5432 hci_stack->discoverable = enable; 5433 hci_update_scan_enable(); 5434 } 5435 5436 void gap_connectable_control(uint8_t enable){ 5437 if (enable) enable = 1; // normalize argument 5438 5439 // don't emit event 5440 if (hci_stack->connectable == enable) return; 5441 5442 hci_stack->connectable = enable; 5443 hci_update_scan_enable(); 5444 } 5445 #endif 5446 5447 void gap_local_bd_addr(bd_addr_t address_buffer){ 5448 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5449 } 5450 5451 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5452 static void hci_host_num_completed_packets(void){ 5453 5454 // create packet manually as arrays are not supported and num_commands should not get reduced 5455 hci_reserve_packet_buffer(); 5456 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5457 5458 uint16_t size = 0; 5459 uint16_t num_handles = 0; 5460 packet[size++] = 0x35; 5461 packet[size++] = 0x0c; 5462 size++; // skip param len 5463 size++; // skip num handles 5464 5465 // add { handle, packets } entries 5466 btstack_linked_item_t * it; 5467 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5468 hci_connection_t * connection = (hci_connection_t *) it; 5469 if (connection->num_packets_completed){ 5470 little_endian_store_16(packet, size, connection->con_handle); 5471 size += 2; 5472 little_endian_store_16(packet, size, connection->num_packets_completed); 5473 size += 2; 5474 // 5475 num_handles++; 5476 connection->num_packets_completed = 0; 5477 } 5478 } 5479 5480 packet[2] = size - 3; 5481 packet[3] = num_handles; 5482 5483 hci_stack->host_completed_packets = 0; 5484 5485 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5486 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5487 5488 // release packet buffer for synchronous transport implementations 5489 if (hci_transport_synchronous()){ 5490 hci_release_packet_buffer(); 5491 hci_emit_transport_packet_sent(); 5492 } 5493 } 5494 #endif 5495 5496 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5497 UNUSED(ds); 5498 hci_stack->substate = HCI_HALTING_CLOSE; 5499 hci_halting_run(); 5500 } 5501 5502 static bool hci_run_acl_fragments(void){ 5503 if (hci_stack->acl_fragmentation_total_size > 0u) { 5504 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5505 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5506 if (connection) { 5507 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5508 hci_send_acl_packet_fragments(connection); 5509 return true; 5510 } 5511 } else { 5512 // connection gone -> discard further fragments 5513 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5514 hci_stack->acl_fragmentation_total_size = 0; 5515 hci_stack->acl_fragmentation_pos = 0; 5516 } 5517 } 5518 return false; 5519 } 5520 5521 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5522 static bool hci_run_iso_fragments(void){ 5523 if (hci_stack->iso_fragmentation_total_size > 0u) { 5524 // TODO: flow control 5525 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5526 hci_send_iso_packet_fragments(); 5527 return true; 5528 } 5529 } 5530 return false; 5531 } 5532 #endif 5533 5534 #ifdef ENABLE_CLASSIC 5535 5536 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5537 static bool hci_classic_operation_active(void) { 5538 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5539 return true; 5540 } 5541 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5542 return true; 5543 } 5544 btstack_linked_item_t * it; 5545 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5546 hci_connection_t *connection = (hci_connection_t *) it; 5547 switch (connection->state) { 5548 case SENT_CREATE_CONNECTION: 5549 case SENT_CANCEL_CONNECTION: 5550 case SENT_DISCONNECT: 5551 return true; 5552 default: 5553 break; 5554 } 5555 } 5556 return false; 5557 } 5558 #endif 5559 5560 static bool hci_run_general_gap_classic(void){ 5561 5562 // assert stack is working and classic is active 5563 if (hci_classic_supported() == false) return false; 5564 if (hci_stack->state != HCI_STATE_WORKING) return false; 5565 5566 // decline incoming connections 5567 if (hci_stack->decline_reason){ 5568 uint8_t reason = hci_stack->decline_reason; 5569 hci_stack->decline_reason = 0; 5570 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5571 return true; 5572 } 5573 5574 if (hci_stack->gap_tasks_classic != 0){ 5575 hci_run_gap_tasks_classic(); 5576 return true; 5577 } 5578 5579 // start/stop inquiry 5580 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5581 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5582 if (hci_classic_operation_active() == false) 5583 #endif 5584 { 5585 uint8_t duration = hci_stack->inquiry_state; 5586 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5587 if (hci_stack->inquiry_max_period_length != 0){ 5588 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); 5589 } else { 5590 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5591 } 5592 return true; 5593 } 5594 } 5595 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5596 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5597 hci_send_cmd(&hci_inquiry_cancel); 5598 return true; 5599 } 5600 5601 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5602 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5603 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5604 return true; 5605 } 5606 5607 // remote name request 5608 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5609 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5610 if (hci_classic_operation_active() == false) 5611 #endif 5612 { 5613 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5614 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5615 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5616 return true; 5617 } 5618 } 5619 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5620 // Local OOB data 5621 if (hci_stack->classic_read_local_oob_data){ 5622 hci_stack->classic_read_local_oob_data = false; 5623 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5624 hci_send_cmd(&hci_read_local_extended_oob_data); 5625 } else { 5626 hci_send_cmd(&hci_read_local_oob_data); 5627 } 5628 } 5629 #endif 5630 // pairing 5631 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5632 uint8_t state = hci_stack->gap_pairing_state; 5633 uint8_t pin_code[16]; 5634 switch (state){ 5635 case GAP_PAIRING_STATE_SEND_PIN: 5636 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5637 memset(pin_code, 0, 16); 5638 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5639 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5640 break; 5641 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5642 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5643 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5644 break; 5645 case GAP_PAIRING_STATE_SEND_PASSKEY: 5646 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5647 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5648 break; 5649 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5650 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5651 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5652 break; 5653 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5654 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5655 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5656 break; 5657 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5658 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5659 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5660 break; 5661 default: 5662 break; 5663 } 5664 return true; 5665 } 5666 return false; 5667 } 5668 #endif 5669 5670 #ifdef ENABLE_BLE 5671 5672 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5673 static uint8_t hci_le_num_phys(uint8_t phys){ 5674 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5675 btstack_assert(phys); 5676 return num_bits_set[phys]; 5677 } 5678 #endif 5679 5680 #ifdef ENABLE_LE_CENTRAL 5681 static void hci_le_scan_stop(void){ 5682 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5683 if (hci_extended_advertising_supported()) { 5684 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5685 } else 5686 #endif 5687 { 5688 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5689 } 5690 } 5691 5692 static void 5693 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5694 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5695 if (hci_extended_advertising_supported()) { 5696 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5697 uint16_t le_connection_scan_interval[3]; 5698 uint16_t le_connection_scan_window[3]; 5699 uint16_t le_connection_interval_min[3]; 5700 uint16_t le_connection_interval_max[3]; 5701 uint16_t le_connection_latency[3]; 5702 uint16_t le_supervision_timeout[3]; 5703 uint16_t le_minimum_ce_length[3]; 5704 uint16_t le_maximum_ce_length[3]; 5705 5706 uint8_t i; 5707 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5708 for (i=0;i<num_phys;i++){ 5709 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5710 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5711 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5712 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5713 le_connection_latency[i] = hci_stack->le_connection_latency; 5714 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5715 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5716 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5717 } 5718 hci_send_cmd(&hci_le_extended_create_connection, 5719 initiator_filter_policy, 5720 hci_stack->le_connection_own_addr_type, // our addr type: 5721 address_type, // peer address type 5722 address, // peer bd addr 5723 hci_stack->le_connection_phys, // initiating PHY 5724 le_connection_scan_interval, // conn scan interval 5725 le_connection_scan_window, // conn scan windows 5726 le_connection_interval_min, // conn interval min 5727 le_connection_interval_max, // conn interval max 5728 le_connection_latency, // conn latency 5729 le_supervision_timeout, // conn latency 5730 le_minimum_ce_length, // min ce length 5731 le_maximum_ce_length // max ce length 5732 ); 5733 } else 5734 #endif 5735 { 5736 hci_send_cmd(&hci_le_create_connection, 5737 hci_stack->le_connection_scan_interval, // conn scan interval 5738 hci_stack->le_connection_scan_window, // conn scan windows 5739 initiator_filter_policy, // don't use whitelist 5740 address_type, // peer address type 5741 address, // peer bd addr 5742 hci_stack->le_connection_own_addr_type, // our addr type: 5743 hci_stack->le_connection_interval_min, // conn interval min 5744 hci_stack->le_connection_interval_max, // conn interval max 5745 hci_stack->le_connection_latency, // conn latency 5746 hci_stack->le_supervision_timeout, // conn latency 5747 hci_stack->le_minimum_ce_length, // min ce length 5748 hci_stack->le_maximum_ce_length // max ce length 5749 ); 5750 } 5751 } 5752 #endif 5753 5754 #ifdef ENABLE_LE_PERIPHERAL 5755 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5756 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5757 uint8_t operation = 0; 5758 if (pos == 0){ 5759 // first fragment or complete data 5760 operation |= 1; 5761 } 5762 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5763 // last fragment or complete data 5764 operation |= 2; 5765 } 5766 return operation; 5767 } 5768 #endif 5769 #endif 5770 5771 static bool hci_run_general_gap_le(void){ 5772 5773 btstack_linked_list_iterator_t lit; 5774 5775 // Phase 1: collect what to stop 5776 5777 #ifdef ENABLE_LE_CENTRAL 5778 bool scanning_stop = false; 5779 bool connecting_stop = false; 5780 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5781 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5782 bool periodic_sync_stop = false; 5783 #endif 5784 #endif 5785 #endif 5786 5787 #ifdef ENABLE_LE_PERIPHERAL 5788 bool advertising_stop = false; 5789 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5790 le_advertising_set_t * advertising_stop_set = NULL; 5791 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5792 bool periodic_advertising_stop = false; 5793 #endif 5794 #endif 5795 #endif 5796 5797 // check if own address changes 5798 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5799 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5800 5801 // check if whitelist needs modification 5802 bool whitelist_modification_pending = false; 5803 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5804 while (btstack_linked_list_iterator_has_next(&lit)){ 5805 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5806 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5807 whitelist_modification_pending = true; 5808 break; 5809 } 5810 } 5811 5812 // check if resolving list needs modification 5813 bool resolving_list_modification_pending = false; 5814 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5815 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5816 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5817 resolving_list_modification_pending = true; 5818 } 5819 #endif 5820 5821 #ifdef ENABLE_LE_CENTRAL 5822 5823 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5824 // check if periodic advertiser list needs modification 5825 bool periodic_list_modification_pending = false; 5826 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5827 while (btstack_linked_list_iterator_has_next(&lit)){ 5828 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5829 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5830 periodic_list_modification_pending = true; 5831 break; 5832 } 5833 } 5834 #endif 5835 5836 // scanning control 5837 if (hci_stack->le_scanning_active) { 5838 // stop if: 5839 // - parameter change required 5840 // - it's disabled 5841 // - whitelist change required but used for scanning 5842 // - resolving list modified 5843 // - own address changes 5844 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5845 if ((hci_stack->le_scanning_param_update) || 5846 !hci_stack->le_scanning_enabled || 5847 (scanning_uses_whitelist && whitelist_modification_pending) || 5848 resolving_list_modification_pending || 5849 random_address_change){ 5850 5851 scanning_stop = true; 5852 } 5853 } 5854 5855 // connecting control 5856 bool connecting_with_whitelist; 5857 switch (hci_stack->le_connecting_state){ 5858 case LE_CONNECTING_DIRECT: 5859 case LE_CONNECTING_WHITELIST: 5860 // stop connecting if: 5861 // - connecting uses white and whitelist modification pending 5862 // - if it got disabled 5863 // - resolving list modified 5864 // - own address changes 5865 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5866 if ((connecting_with_whitelist && whitelist_modification_pending) || 5867 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5868 resolving_list_modification_pending || 5869 random_address_change) { 5870 5871 connecting_stop = true; 5872 } 5873 break; 5874 default: 5875 break; 5876 } 5877 5878 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5879 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5880 // periodic sync control 5881 bool sync_with_advertiser_list; 5882 switch(hci_stack->le_periodic_sync_state){ 5883 case LE_CONNECTING_DIRECT: 5884 case LE_CONNECTING_WHITELIST: 5885 // stop sync if: 5886 // - sync with advertiser list and advertiser list modification pending 5887 // - if it got disabled 5888 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5889 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5890 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5891 periodic_sync_stop = true; 5892 } 5893 break; 5894 default: 5895 break; 5896 } 5897 #endif 5898 #endif 5899 5900 #endif /* ENABLE_LE_CENTRAL */ 5901 5902 #ifdef ENABLE_LE_PERIPHERAL 5903 // le advertisement control 5904 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5905 // stop if: 5906 // - parameter change required 5907 // - random address used in advertising and changes 5908 // - it's disabled 5909 // - whitelist change required but used for advertisement filter policy 5910 // - resolving list modified 5911 // - own address changes 5912 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5913 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5914 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5915 if (advertising_change || 5916 (advertising_uses_random_address && random_address_change) || 5917 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5918 (advertising_uses_whitelist && whitelist_modification_pending) || 5919 resolving_list_modification_pending || 5920 random_address_change) { 5921 5922 advertising_stop = true; 5923 } 5924 } 5925 5926 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5927 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5928 btstack_linked_list_iterator_t it; 5929 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5930 while (btstack_linked_list_iterator_has_next(&it)){ 5931 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5932 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5933 // stop if: 5934 // - parameter change required 5935 // - random address used in connectable advertising and changes 5936 // - it's disabled 5937 // - whitelist change required but used for advertisement filter policy 5938 // - resolving list modified 5939 // - own address changes 5940 // - advertisement set will be removed 5941 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5942 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5943 bool advertising_uses_random_address = 5944 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5945 advertising_connectable; 5946 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5947 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5948 bool advertising_set_random_address_change = 5949 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5950 bool advertising_set_will_be_removed = 5951 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5952 if (advertising_parameter_change || 5953 (advertising_uses_random_address && advertising_set_random_address_change) || 5954 (advertising_enabled == false) || 5955 (advertising_uses_whitelist && whitelist_modification_pending) || 5956 resolving_list_modification_pending || 5957 advertising_set_will_be_removed) { 5958 5959 advertising_stop = true; 5960 advertising_stop_set = advertising_set; 5961 break; 5962 } 5963 } 5964 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5965 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5966 // stop if: 5967 // - it's disabled 5968 // - parameter change required 5969 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5970 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5971 if ((periodic_enabled == false) || periodic_parameter_change){ 5972 periodic_advertising_stop = true; 5973 advertising_stop_set = advertising_set; 5974 } 5975 } 5976 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5977 } 5978 } 5979 #endif 5980 5981 #endif 5982 5983 5984 // Phase 2: stop everything that should be off during modifications 5985 5986 5987 // 2.1 Outgoing connection 5988 #ifdef ENABLE_LE_CENTRAL 5989 if (connecting_stop){ 5990 hci_send_cmd(&hci_le_create_connection_cancel); 5991 return true; 5992 } 5993 #endif 5994 5995 // 2.2 Scanning 5996 #ifdef ENABLE_LE_CENTRAL 5997 if (scanning_stop){ 5998 hci_stack->le_scanning_active = false; 5999 hci_le_scan_stop(); 6000 return true; 6001 } 6002 6003 // 2.3 Periodic Sync 6004 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6005 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6006 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6007 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6008 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6009 return true; 6010 } 6011 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6012 if (periodic_sync_stop){ 6013 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6014 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6015 return true; 6016 } 6017 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6018 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6019 #endif /* ENABLE_LE_CENTRAL */ 6020 6021 // 2.4 Advertising: legacy, extended, periodic 6022 #ifdef ENABLE_LE_PERIPHERAL 6023 if (advertising_stop){ 6024 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6025 if (hci_extended_advertising_supported()) { 6026 uint8_t advertising_stop_handle; 6027 if (advertising_stop_set != NULL){ 6028 advertising_stop_handle = advertising_stop_set->advertising_handle; 6029 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6030 } else { 6031 advertising_stop_handle = 0; 6032 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6033 } 6034 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6035 const uint16_t durations[] = { 0 }; 6036 const uint16_t max_events[] = { 0 }; 6037 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6038 } else 6039 #endif 6040 { 6041 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6042 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6043 } 6044 return true; 6045 } 6046 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6047 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6048 if (periodic_advertising_stop){ 6049 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6050 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6051 return true; 6052 } 6053 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6054 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6055 #endif /* ENABLE_LE_PERIPHERAL */ 6056 6057 6058 // Phase 3: modify 6059 6060 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6061 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6062 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6063 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6064 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6065 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6066 #endif 6067 return true; 6068 } 6069 6070 #ifdef ENABLE_LE_CENTRAL 6071 if (hci_stack->le_scanning_param_update){ 6072 hci_stack->le_scanning_param_update = false; 6073 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6074 if (hci_extended_advertising_supported()){ 6075 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6076 uint8_t scan_types[2]; 6077 uint16_t scan_intervals[2]; 6078 uint16_t scan_windows[2]; 6079 6080 uint8_t i; 6081 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6082 for (i=0;i<num_phys;i++){ 6083 scan_types[i] = hci_stack->le_scan_type; 6084 scan_intervals[i] = hci_stack->le_scan_interval; 6085 scan_windows[i] = hci_stack->le_scan_window; 6086 } 6087 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6088 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6089 } else 6090 #endif 6091 { 6092 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6093 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6094 } 6095 return true; 6096 } 6097 #endif 6098 6099 #ifdef ENABLE_LE_PERIPHERAL 6100 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6101 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6102 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6103 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6104 if (hci_extended_advertising_supported()){ 6105 // map advertisment type to advertising event properties 6106 uint16_t adv_event_properties = 0; 6107 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6108 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6109 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6110 } 6111 hci_stack->le_advertising_set_in_current_command = 0; 6112 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6113 0, 6114 adv_event_properties, 6115 hci_stack->le_advertisements_interval_min, 6116 hci_stack->le_advertisements_interval_max, 6117 hci_stack->le_advertisements_channel_map, 6118 hci_stack->le_advertisements_own_addr_type, 6119 hci_stack->le_advertisements_direct_address_type, 6120 hci_stack->le_advertisements_direct_address, 6121 hci_stack->le_advertisements_filter_policy, 6122 0x7f, // tx power: no preference 6123 0x01, // primary adv phy: LE 1M 6124 0, // secondary adv max skip 6125 0, // secondary adv phy 6126 0, // adv sid 6127 0 // scan request notification 6128 ); 6129 } else 6130 #endif 6131 { 6132 hci_send_cmd(&hci_le_set_advertising_parameters, 6133 hci_stack->le_advertisements_interval_min, 6134 hci_stack->le_advertisements_interval_max, 6135 hci_stack->le_advertisements_type, 6136 hci_stack->le_advertisements_own_addr_type, 6137 hci_stack->le_advertisements_direct_address_type, 6138 hci_stack->le_advertisements_direct_address, 6139 hci_stack->le_advertisements_channel_map, 6140 hci_stack->le_advertisements_filter_policy); 6141 } 6142 return true; 6143 } 6144 6145 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6146 // assumption: only set if extended advertising is supported 6147 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6148 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6149 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6150 return true; 6151 } 6152 #endif 6153 6154 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6155 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6156 uint8_t adv_data_clean[31]; 6157 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6158 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6159 hci_stack->le_advertisements_data_len); 6160 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6161 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6162 if (hci_extended_advertising_supported()){ 6163 hci_stack->le_advertising_set_in_current_command = 0; 6164 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6165 } else 6166 #endif 6167 { 6168 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6169 } 6170 return true; 6171 } 6172 6173 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6174 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6175 uint8_t scan_data_clean[31]; 6176 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6177 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6178 hci_stack->le_scan_response_data_len); 6179 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6180 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6181 if (hci_extended_advertising_supported()){ 6182 hci_stack->le_advertising_set_in_current_command = 0; 6183 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6184 } else 6185 #endif 6186 { 6187 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6188 } 6189 return true; 6190 } 6191 6192 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6193 if (hci_extended_advertising_supported()) { 6194 btstack_linked_list_iterator_t it; 6195 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6196 while (btstack_linked_list_iterator_has_next(&it)){ 6197 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6198 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6199 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6200 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6201 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6202 return true; 6203 } 6204 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6205 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6206 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6207 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6208 advertising_set->advertising_handle, 6209 advertising_set->extended_params.advertising_event_properties, 6210 advertising_set->extended_params.primary_advertising_interval_min, 6211 advertising_set->extended_params.primary_advertising_interval_max, 6212 advertising_set->extended_params.primary_advertising_channel_map, 6213 advertising_set->extended_params.own_address_type, 6214 advertising_set->extended_params.peer_address_type, 6215 advertising_set->extended_params.peer_address, 6216 advertising_set->extended_params.advertising_filter_policy, 6217 advertising_set->extended_params.advertising_tx_power, 6218 advertising_set->extended_params.primary_advertising_phy, 6219 advertising_set->extended_params.secondary_advertising_max_skip, 6220 advertising_set->extended_params.secondary_advertising_phy, 6221 advertising_set->extended_params.advertising_sid, 6222 advertising_set->extended_params.scan_request_notification_enable 6223 ); 6224 return true; 6225 } 6226 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6227 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6228 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6229 return true; 6230 } 6231 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6232 uint16_t pos = advertising_set->adv_data_pos; 6233 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6234 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6235 if ((operation & 0x02) != 0){ 6236 // last fragment or complete data 6237 operation |= 2; 6238 advertising_set->adv_data_pos = 0; 6239 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6240 } else { 6241 advertising_set->adv_data_pos += data_to_upload; 6242 } 6243 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6244 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6245 return true; 6246 } 6247 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6248 uint16_t pos = advertising_set->scan_data_pos; 6249 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6250 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6251 if ((operation & 0x02) != 0){ 6252 advertising_set->scan_data_pos = 0; 6253 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6254 } else { 6255 advertising_set->scan_data_pos += data_to_upload; 6256 } 6257 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6258 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6259 return true; 6260 } 6261 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6262 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6263 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6264 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6265 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6266 advertising_set->advertising_handle, 6267 advertising_set->periodic_params.periodic_advertising_interval_min, 6268 advertising_set->periodic_params.periodic_advertising_interval_max, 6269 advertising_set->periodic_params.periodic_advertising_properties); 6270 return true; 6271 } 6272 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6273 uint16_t pos = advertising_set->periodic_data_pos; 6274 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6275 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6276 if ((operation & 0x02) != 0){ 6277 // last fragment or complete data 6278 operation |= 2; 6279 advertising_set->periodic_data_pos = 0; 6280 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6281 } else { 6282 advertising_set->periodic_data_pos += data_to_upload; 6283 } 6284 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6285 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6286 return true; 6287 } 6288 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6289 } 6290 } 6291 #endif 6292 6293 #endif 6294 6295 #ifdef ENABLE_LE_CENTRAL 6296 // if connect with whitelist was active and is not cancelled yet, wait until next time 6297 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6298 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6299 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6300 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6301 #endif 6302 #endif 6303 6304 // LE Whitelist Management 6305 if (whitelist_modification_pending){ 6306 // add/remove entries 6307 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6308 while (btstack_linked_list_iterator_has_next(&lit)){ 6309 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6310 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6311 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6312 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6313 return true; 6314 } 6315 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6316 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6317 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6318 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6319 return true; 6320 } 6321 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6322 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6323 btstack_memory_whitelist_entry_free(entry); 6324 } 6325 } 6326 } 6327 6328 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6329 // LE Resolving List Management 6330 if (resolving_list_supported) { 6331 uint16_t i; 6332 switch (hci_stack->le_resolving_list_state) { 6333 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6334 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6335 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6336 return true; 6337 case LE_RESOLVING_LIST_READ_SIZE: 6338 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6339 hci_send_cmd(&hci_le_read_resolving_list_size); 6340 return true; 6341 case LE_RESOLVING_LIST_SEND_CLEAR: 6342 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6343 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6344 sizeof(hci_stack->le_resolving_list_add_entries)); 6345 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6346 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6347 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6348 sizeof(hci_stack->le_resolving_list_remove_entries)); 6349 hci_send_cmd(&hci_le_clear_resolving_list); 6350 return true; 6351 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6352 // first remove old entries 6353 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6354 uint8_t offset = i >> 3; 6355 uint8_t mask = 1 << (i & 7); 6356 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6357 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6358 bd_addr_t peer_identity_addreses; 6359 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6360 sm_key_t peer_irk; 6361 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6362 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6363 6364 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6365 // trigger whitelist entry 'update' (work around for controller bug) 6366 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6367 while (btstack_linked_list_iterator_has_next(&lit)) { 6368 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6369 if (entry->address_type != peer_identity_addr_type) continue; 6370 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6371 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6372 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6373 } 6374 #endif 6375 6376 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6377 peer_identity_addreses); 6378 return true; 6379 } 6380 6381 // then add new entries 6382 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6383 uint8_t offset = i >> 3; 6384 uint8_t mask = 1 << (i & 7); 6385 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6386 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6387 bd_addr_t peer_identity_addreses; 6388 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6389 sm_key_t peer_irk; 6390 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6391 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6392 if (btstack_is_null(peer_irk, 16)) continue; 6393 const uint8_t *local_irk = gap_get_persistent_irk(); 6394 // command uses format specifier 'P' that stores 16-byte value without flip 6395 uint8_t local_irk_flipped[16]; 6396 uint8_t peer_irk_flipped[16]; 6397 reverse_128(local_irk, local_irk_flipped); 6398 reverse_128(peer_irk, peer_irk_flipped); 6399 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6400 peer_irk_flipped, local_irk_flipped); 6401 return true; 6402 } 6403 6404 // finally, set privacy mode 6405 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6406 uint8_t offset = i >> 3; 6407 uint8_t mask = 1 << (i & 7); 6408 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6409 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6410 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6411 // Network Privacy Mode is default 6412 continue; 6413 } 6414 bd_addr_t peer_identity_address; 6415 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6416 sm_key_t peer_irk; 6417 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6418 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6419 if (btstack_is_null(peer_irk, 16)) continue; 6420 // command uses format specifier 'P' that stores 16-byte value without flip 6421 uint8_t peer_irk_flipped[16]; 6422 reverse_128(peer_irk, peer_irk_flipped); 6423 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6424 return true; 6425 } 6426 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6427 break; 6428 6429 default: 6430 break; 6431 } 6432 } 6433 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6434 #endif 6435 6436 #ifdef ENABLE_LE_CENTRAL 6437 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6438 // LE Whitelist Management 6439 if (periodic_list_modification_pending){ 6440 // add/remove entries 6441 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6442 while (btstack_linked_list_iterator_has_next(&lit)){ 6443 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6444 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6445 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6446 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6447 return true; 6448 } 6449 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6450 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6451 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6452 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6453 return true; 6454 } 6455 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6456 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6457 btstack_memory_periodic_advertiser_list_entry_free(entry); 6458 } 6459 } 6460 } 6461 #endif 6462 #endif 6463 6464 #ifdef ENABLE_LE_CENTRAL 6465 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6466 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6467 if (hci_stack->le_past_set_default_params){ 6468 hci_stack->le_past_set_default_params = false; 6469 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6470 hci_stack->le_past_mode, 6471 hci_stack->le_past_skip, 6472 hci_stack->le_past_sync_timeout, 6473 hci_stack->le_past_cte_type); 6474 return true; 6475 } 6476 #endif 6477 #endif 6478 #endif 6479 6480 // post-pone all actions until stack is fully working 6481 if (hci_stack->state != HCI_STATE_WORKING) return false; 6482 6483 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6484 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6485 6486 // Phase 4: restore state 6487 6488 #ifdef ENABLE_LE_CENTRAL 6489 // re-start scanning 6490 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6491 hci_stack->le_scanning_active = true; 6492 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6493 if (hci_extended_advertising_supported()){ 6494 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6495 } else 6496 #endif 6497 { 6498 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6499 } 6500 return true; 6501 } 6502 #endif 6503 6504 #ifdef ENABLE_LE_CENTRAL 6505 // re-start connecting 6506 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6507 bd_addr_t null_addr; 6508 memset(null_addr, 0, 6); 6509 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6510 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6511 hci_send_le_create_connection(1, 0, null_addr); 6512 return true; 6513 } 6514 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6515 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6516 switch(hci_stack->le_periodic_sync_request){ 6517 case LE_CONNECTING_DIRECT: 6518 case LE_CONNECTING_WHITELIST: 6519 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6520 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6521 hci_stack->le_periodic_sync_options, 6522 hci_stack->le_periodic_sync_advertising_sid, 6523 hci_stack->le_periodic_sync_advertiser_address_type, 6524 hci_stack->le_periodic_sync_advertiser_address, 6525 hci_stack->le_periodic_sync_skip, 6526 hci_stack->le_periodic_sync_timeout, 6527 hci_stack->le_periodic_sync_cte_type); 6528 return true; 6529 default: 6530 break; 6531 } 6532 } 6533 #endif 6534 #endif 6535 6536 #ifdef ENABLE_LE_PERIPHERAL 6537 // re-start advertising 6538 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6539 // check if advertisements should be enabled given 6540 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6541 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6542 6543 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6544 if (hci_extended_advertising_supported()){ 6545 const uint8_t advertising_handles[] = { 0 }; 6546 const uint16_t durations[] = { 0 }; 6547 const uint16_t max_events[] = { 0 }; 6548 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6549 } else 6550 #endif 6551 { 6552 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6553 } 6554 return true; 6555 } 6556 6557 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6558 if (hci_extended_advertising_supported()) { 6559 btstack_linked_list_iterator_t it; 6560 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6561 while (btstack_linked_list_iterator_has_next(&it)) { 6562 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6563 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6564 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6565 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6566 const uint16_t durations[] = { advertising_set->enable_timeout }; 6567 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6568 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6569 return true; 6570 } 6571 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6572 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6573 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6574 uint8_t enable = 1; 6575 if (advertising_set->periodic_include_adi){ 6576 enable |= 2; 6577 } 6578 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6579 return true; 6580 } 6581 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6582 } 6583 } 6584 #endif 6585 #endif 6586 6587 return false; 6588 } 6589 6590 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6591 static bool hci_run_iso_tasks(void){ 6592 btstack_linked_list_iterator_t it; 6593 6594 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6595 return false; 6596 } 6597 6598 // BIG 6599 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6600 while (btstack_linked_list_iterator_has_next(&it)){ 6601 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6602 switch (big->state){ 6603 case LE_AUDIO_BIG_STATE_CREATE: 6604 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6605 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6606 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6607 hci_send_cmd(&hci_le_create_big, 6608 big->params->big_handle, 6609 big->params->advertising_handle, 6610 big->params->num_bis, 6611 big->params->sdu_interval_us, 6612 big->params->max_sdu, 6613 big->params->max_transport_latency_ms, 6614 big->params->rtn, 6615 big->params->phy, 6616 big->params->packing, 6617 big->params->framing, 6618 big->params->encryption, 6619 big->params->broadcast_code); 6620 return true; 6621 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6622 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6623 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); 6624 return true; 6625 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6626 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6627 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6628 return true; 6629 case LE_AUDIO_BIG_STATE_TERMINATE: 6630 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6631 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6632 return true; 6633 default: 6634 break; 6635 } 6636 } 6637 6638 // BIG Sync 6639 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6640 while (btstack_linked_list_iterator_has_next(&it)){ 6641 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6642 switch (big_sync->state){ 6643 case LE_AUDIO_BIG_STATE_CREATE: 6644 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6645 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6646 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6647 hci_send_cmd(&hci_le_big_create_sync, 6648 big_sync->params->big_handle, 6649 big_sync->params->sync_handle, 6650 big_sync->params->encryption, 6651 big_sync->params->broadcast_code, 6652 big_sync->params->mse, 6653 big_sync->params->big_sync_timeout_10ms, 6654 big_sync->params->num_bis, 6655 big_sync->params->bis_indices); 6656 return true; 6657 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6658 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6659 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); 6660 return true; 6661 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6662 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6663 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6664 return true; 6665 case LE_AUDIO_BIG_STATE_TERMINATE: 6666 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6667 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6668 return true; 6669 default: 6670 break; 6671 } 6672 } 6673 6674 // CIG 6675 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6676 while (btstack_linked_list_iterator_has_next(&it)) { 6677 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6678 uint8_t i; 6679 // Set CIG Parameters 6680 uint8_t cis_id[MAX_NR_CIS]; 6681 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6682 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6683 uint8_t phy_c_to_p[MAX_NR_CIS]; 6684 uint8_t phy_p_to_c[MAX_NR_CIS]; 6685 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6686 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6687 switch (cig->state) { 6688 case LE_AUDIO_CIG_STATE_CREATE: 6689 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6690 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6691 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6692 le_audio_cig_params_t * params = cig->params; 6693 for (i = 0; i < params->num_cis; i++) { 6694 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6695 cis_id[i] = cis_params->cis_id; 6696 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6697 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6698 phy_c_to_p[i] = cis_params->phy_c_to_p; 6699 phy_p_to_c[i] = cis_params->phy_p_to_c; 6700 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6701 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6702 } 6703 hci_send_cmd(&hci_le_set_cig_parameters, 6704 cig->cig_id, 6705 params->sdu_interval_c_to_p, 6706 params->sdu_interval_p_to_c, 6707 params->worst_case_sca, 6708 params->packing, 6709 params->framing, 6710 params->max_transport_latency_c_to_p, 6711 params->max_transport_latency_p_to_c, 6712 params->num_cis, 6713 cis_id, 6714 max_sdu_c_to_p, 6715 max_sdu_p_to_c, 6716 phy_c_to_p, 6717 phy_p_to_c, 6718 rtn_c_to_p, 6719 rtn_p_to_c 6720 ); 6721 return true; 6722 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6723 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6724 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6725 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6726 for (i=0;i<cig->num_cis;i++){ 6727 cig->cis_setup_active[i] = true; 6728 } 6729 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6730 return true; 6731 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6732 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6733 // find next path to setup 6734 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6735 if (cig->cis_established[cis_index] == false) { 6736 continue; 6737 } 6738 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6739 bool setup = true; 6740 if (cis_direction == 0){ 6741 // 0 - input - host to controller 6742 // we are central => central to peripheral 6743 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6744 } else { 6745 // 1 - output - controller to host 6746 // we are central => peripheral to central 6747 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6748 } 6749 if (setup){ 6750 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6751 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6752 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6753 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6754 return true; 6755 } 6756 cig->state_vars.next_cis++; 6757 } 6758 // emit done 6759 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6760 default: 6761 break; 6762 } 6763 } 6764 6765 // CIS Accept/Reject 6766 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6767 while (btstack_linked_list_iterator_has_next(&it)) { 6768 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6769 hci_con_handle_t con_handle; 6770 switch (iso_stream->state){ 6771 case HCI_ISO_STREAM_W2_ACCEPT: 6772 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6773 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6774 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6775 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6776 return true; 6777 case HCI_ISO_STREAM_W2_REJECT: 6778 con_handle = iso_stream->cis_handle; 6779 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6780 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6781 hci_iso_stream_finalize(iso_stream); 6782 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6783 return true; 6784 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6785 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6786 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6787 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6788 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6789 break; 6790 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6791 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6792 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6793 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6794 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6795 break; 6796 default: 6797 break; 6798 } 6799 } 6800 6801 return false; 6802 } 6803 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6804 #endif 6805 6806 static bool hci_run_general_pending_commands(void){ 6807 btstack_linked_item_t * it; 6808 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6809 hci_connection_t * connection = (hci_connection_t *) it; 6810 6811 switch(connection->state){ 6812 case SEND_CREATE_CONNECTION: 6813 switch(connection->address_type){ 6814 #ifdef ENABLE_CLASSIC 6815 case BD_ADDR_TYPE_ACL: 6816 log_info("sending hci_create_connection"); 6817 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6818 break; 6819 #endif 6820 default: 6821 #ifdef ENABLE_BLE 6822 #ifdef ENABLE_LE_CENTRAL 6823 log_info("sending hci_le_create_connection"); 6824 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6825 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6826 hci_send_le_create_connection(0, connection->address_type, connection->address); 6827 connection->state = SENT_CREATE_CONNECTION; 6828 #endif 6829 #endif 6830 break; 6831 } 6832 return true; 6833 6834 #ifdef ENABLE_CLASSIC 6835 case RECEIVED_CONNECTION_REQUEST: 6836 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6837 log_info("sending hci_accept_connection_request"); 6838 connection->state = ACCEPTED_CONNECTION_REQUEST; 6839 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6840 return true; 6841 } 6842 break; 6843 #endif 6844 case SEND_DISCONNECT: 6845 connection->state = SENT_DISCONNECT; 6846 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6847 return true; 6848 6849 default: 6850 break; 6851 } 6852 6853 // no further commands if connection is about to get shut down 6854 if (connection->state == SENT_DISCONNECT) continue; 6855 6856 #ifdef ENABLE_CLASSIC 6857 6858 // Handling link key request requires remote supported features 6859 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6860 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6861 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6862 6863 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6864 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6865 if (have_link_key && security_level_sufficient){ 6866 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6867 } else { 6868 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6869 } 6870 return true; 6871 } 6872 6873 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6874 log_info("denying to pin request"); 6875 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6876 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6877 return true; 6878 } 6879 6880 // security assessment requires remote features 6881 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6882 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6883 hci_ssp_assess_security_on_io_cap_request(connection); 6884 // 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 6885 } 6886 6887 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6888 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6889 // set authentication requirements: 6890 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6891 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6892 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6893 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6894 authreq |= 1; 6895 } 6896 bool bonding = hci_stack->bondable; 6897 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6898 // if we have received IO Cap Response, we're in responder role 6899 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6900 if (bonding && !remote_bonding){ 6901 log_info("Remote not bonding, dropping local flag"); 6902 bonding = false; 6903 } 6904 } 6905 if (bonding){ 6906 if (connection->bonding_flags & BONDING_DEDICATED){ 6907 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6908 } else { 6909 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6910 } 6911 } 6912 uint8_t have_oob_data = 0; 6913 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6914 if (connection->classic_oob_c_192 != NULL){ 6915 have_oob_data |= 1; 6916 } 6917 if (connection->classic_oob_c_256 != NULL){ 6918 have_oob_data |= 2; 6919 } 6920 #endif 6921 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6922 return true; 6923 } 6924 6925 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6926 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6927 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6928 return true; 6929 } 6930 6931 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6932 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6933 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6934 const uint8_t zero[16] = { 0 }; 6935 const uint8_t * r_192 = zero; 6936 const uint8_t * c_192 = zero; 6937 const uint8_t * r_256 = zero; 6938 const uint8_t * c_256 = zero; 6939 // verify P-256 OOB 6940 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6941 c_256 = connection->classic_oob_c_256; 6942 if (connection->classic_oob_r_256 != NULL) { 6943 r_256 = connection->classic_oob_r_256; 6944 } 6945 } 6946 // verify P-192 OOB 6947 if ((connection->classic_oob_c_192 != NULL)) { 6948 c_192 = connection->classic_oob_c_192; 6949 if (connection->classic_oob_r_192 != NULL) { 6950 r_192 = connection->classic_oob_r_192; 6951 } 6952 } 6953 6954 // assess security 6955 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6956 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6957 if (need_level_4 && !can_reach_level_4){ 6958 log_info("Level 4 required, but not possible -> abort"); 6959 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6960 // send oob negative reply 6961 c_256 = NULL; 6962 c_192 = NULL; 6963 } 6964 6965 // Reply 6966 if (c_256 != zero) { 6967 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6968 } else if (c_192 != zero){ 6969 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6970 } else { 6971 hci_stack->classic_oob_con_handle = connection->con_handle; 6972 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6973 } 6974 return true; 6975 } 6976 #endif 6977 6978 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6979 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6980 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6981 return true; 6982 } 6983 6984 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6985 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6986 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6987 return true; 6988 } 6989 6990 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6991 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6992 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6993 return true; 6994 } 6995 6996 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6997 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6998 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6999 connection->state = SENT_DISCONNECT; 7000 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7001 return true; 7002 } 7003 7004 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7005 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7006 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7007 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7008 return true; 7009 } 7010 7011 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7012 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7013 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7014 return true; 7015 } 7016 7017 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7018 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7019 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7020 return true; 7021 } 7022 7023 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7024 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7025 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7026 return true; 7027 } 7028 7029 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7030 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7031 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7032 return true; 7033 } 7034 7035 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7036 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7037 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7038 return true; 7039 } 7040 #endif 7041 7042 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7043 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7044 #ifdef ENABLE_CLASSIC 7045 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7046 #endif 7047 if (connection->state != SENT_DISCONNECT){ 7048 connection->state = SENT_DISCONNECT; 7049 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7050 return true; 7051 } 7052 } 7053 7054 #ifdef ENABLE_CLASSIC 7055 uint16_t sniff_min_interval; 7056 switch (connection->sniff_min_interval){ 7057 case 0: 7058 break; 7059 case 0xffff: 7060 connection->sniff_min_interval = 0; 7061 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7062 return true; 7063 default: 7064 sniff_min_interval = connection->sniff_min_interval; 7065 connection->sniff_min_interval = 0; 7066 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7067 return true; 7068 } 7069 7070 if (connection->sniff_subrating_max_latency != 0xffff){ 7071 uint16_t max_latency = connection->sniff_subrating_max_latency; 7072 connection->sniff_subrating_max_latency = 0; 7073 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7074 return true; 7075 } 7076 7077 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7078 uint8_t service_type = (uint8_t) connection->qos_service_type; 7079 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7080 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); 7081 return true; 7082 } 7083 7084 if (connection->request_role != HCI_ROLE_INVALID){ 7085 hci_role_t role = connection->request_role; 7086 connection->request_role = HCI_ROLE_INVALID; 7087 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7088 return true; 7089 } 7090 #endif 7091 7092 if (connection->gap_connection_tasks != 0){ 7093 #ifdef ENABLE_CLASSIC 7094 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7095 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7096 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7097 return true; 7098 } 7099 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7100 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7101 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7102 return true; 7103 } 7104 #endif 7105 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7106 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7107 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7108 return true; 7109 } 7110 #ifdef ENABLE_BLE 7111 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7112 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7113 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7114 return true; 7115 } 7116 #endif 7117 } 7118 7119 #ifdef ENABLE_BLE 7120 switch (connection->le_con_parameter_update_state){ 7121 // response to L2CAP CON PARAMETER UPDATE REQUEST 7122 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7123 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7124 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7125 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7126 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7127 return true; 7128 case CON_PARAMETER_UPDATE_REPLY: 7129 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7130 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7131 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7132 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7133 return true; 7134 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7135 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7136 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7137 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7138 return true; 7139 default: 7140 break; 7141 } 7142 if (connection->le_phy_update_all_phys != 0xffu){ 7143 uint8_t all_phys = connection->le_phy_update_all_phys; 7144 connection->le_phy_update_all_phys = 0xff; 7145 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); 7146 return true; 7147 } 7148 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7149 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7150 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7151 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7152 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7153 return true; 7154 } 7155 #endif 7156 #endif 7157 } 7158 return false; 7159 } 7160 7161 static void hci_run(void){ 7162 7163 // stack state sub statemachines 7164 switch (hci_stack->state) { 7165 case HCI_STATE_INITIALIZING: 7166 hci_initializing_run(); 7167 break; 7168 case HCI_STATE_HALTING: 7169 hci_halting_run(); 7170 break; 7171 case HCI_STATE_FALLING_ASLEEP: 7172 hci_falling_asleep_run(); 7173 break; 7174 default: 7175 break; 7176 } 7177 7178 // allow to run after initialization to working transition 7179 if (hci_stack->state != HCI_STATE_WORKING){ 7180 return; 7181 } 7182 7183 bool done; 7184 7185 // send continuation fragments first, as they block the prepared packet buffer 7186 done = hci_run_acl_fragments(); 7187 if (done) return; 7188 7189 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7190 done = hci_run_iso_fragments(); 7191 if (done) return; 7192 #endif 7193 7194 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7195 // send host num completed packets next as they don't require num_cmd_packets > 0 7196 if (!hci_can_send_comand_packet_transport()) return; 7197 if (hci_stack->host_completed_packets){ 7198 hci_host_num_completed_packets(); 7199 return; 7200 } 7201 #endif 7202 7203 if (!hci_can_send_command_packet_now()) return; 7204 7205 // global/non-connection oriented commands 7206 7207 7208 #ifdef ENABLE_CLASSIC 7209 // general gap classic 7210 done = hci_run_general_gap_classic(); 7211 if (done) return; 7212 #endif 7213 7214 #ifdef ENABLE_BLE 7215 // general gap le 7216 done = hci_run_general_gap_le(); 7217 if (done) return; 7218 7219 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7220 // ISO related tasks, e.g. BIG create/terminate/sync 7221 done = hci_run_iso_tasks(); 7222 if (done) return; 7223 #endif 7224 #endif 7225 7226 // send pending HCI commands 7227 hci_run_general_pending_commands(); 7228 } 7229 7230 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7231 // house-keeping 7232 7233 #ifdef ENABLE_CLASSIC 7234 bd_addr_t addr; 7235 hci_connection_t * conn; 7236 #endif 7237 #ifdef ENABLE_LE_CENTRAL 7238 uint8_t initiator_filter_policy; 7239 #endif 7240 7241 uint16_t opcode = little_endian_read_16(packet, 0); 7242 switch (opcode) { 7243 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7244 hci_stack->loopback_mode = packet[3]; 7245 break; 7246 7247 #ifdef ENABLE_CLASSIC 7248 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7249 reverse_bd_addr(&packet[3], addr); 7250 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7251 7252 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7253 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7254 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7255 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7256 } 7257 7258 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7259 if (!conn) { 7260 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7261 if (!conn) { 7262 // notify client that alloc failed 7263 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7264 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7265 } 7266 conn->state = SEND_CREATE_CONNECTION; 7267 } 7268 7269 log_info("conn state %u", conn->state); 7270 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7271 switch (conn->state) { 7272 // if connection active exists 7273 case OPEN: 7274 // and OPEN, emit connection complete command 7275 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7276 // packet not sent to controller 7277 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7278 case RECEIVED_DISCONNECTION_COMPLETE: 7279 // create connection triggered in disconnect complete event, let's do it now 7280 break; 7281 case SEND_CREATE_CONNECTION: 7282 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7283 if (hci_classic_operation_active()){ 7284 return ERROR_CODE_SUCCESS; 7285 } 7286 #endif 7287 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7288 break; 7289 default: 7290 // otherwise, just ignore as it is already in the open process 7291 // packet not sent to controller 7292 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7293 } 7294 conn->state = SENT_CREATE_CONNECTION; 7295 7296 // track outgoing connection 7297 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7298 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7299 break; 7300 7301 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7302 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7303 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7304 if (conn == NULL) { 7305 // neither SCO nor ACL connection for con handle 7306 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7307 } else { 7308 switch (conn->address_type){ 7309 case BD_ADDR_TYPE_ACL: 7310 // assert SCO connection does not exit 7311 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7312 return ERROR_CODE_COMMAND_DISALLOWED; 7313 } 7314 // allocate connection struct 7315 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7316 HCI_ROLE_MASTER); 7317 if (!conn) { 7318 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7319 } 7320 break; 7321 case BD_ADDR_TYPE_SCO: 7322 // update of existing SCO connection 7323 break; 7324 default: 7325 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7326 } 7327 } 7328 7329 // conn refers to hci connection of type sco now 7330 7331 conn->state = SENT_CREATE_CONNECTION; 7332 7333 // track outgoing connection to handle command status with error 7334 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7335 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7336 7337 // setup_synchronous_connection? Voice setting at offset 22 7338 // TODO: compare to current setting if sco connection already active 7339 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7340 break; 7341 7342 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7343 // get SCO connection 7344 reverse_bd_addr(&packet[3], addr); 7345 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7346 if (conn == NULL){ 7347 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7348 } 7349 7350 conn->state = ACCEPTED_CONNECTION_REQUEST; 7351 7352 // track outgoing connection to handle command status with error 7353 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7354 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7355 7356 // accept_synchronous_connection? Voice setting at offset 18 7357 // TODO: compare to current setting if sco connection already active 7358 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7359 break; 7360 #endif 7361 #endif 7362 7363 #ifdef ENABLE_BLE 7364 #ifdef ENABLE_LE_CENTRAL 7365 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7366 // white list used? 7367 initiator_filter_policy = packet[7]; 7368 switch (initiator_filter_policy) { 7369 case 0: 7370 // whitelist not used 7371 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7372 break; 7373 case 1: 7374 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7375 break; 7376 default: 7377 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7378 break; 7379 } 7380 // track outgoing connection 7381 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7382 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7383 break; 7384 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7385 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7386 // white list used? 7387 initiator_filter_policy = packet[3]; 7388 switch (initiator_filter_policy) { 7389 case 0: 7390 // whitelist not used 7391 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7392 break; 7393 case 1: 7394 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7395 break; 7396 default: 7397 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7398 break; 7399 } 7400 // track outgoing connection 7401 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7402 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7403 break; 7404 #endif 7405 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7406 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7407 break; 7408 #endif 7409 #endif /* ENABLE_BLE */ 7410 default: 7411 break; 7412 } 7413 7414 hci_stack->num_cmd_packets--; 7415 7416 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7417 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7418 if (err != 0){ 7419 return ERROR_CODE_HARDWARE_FAILURE; 7420 } 7421 return ERROR_CODE_SUCCESS; 7422 } 7423 7424 // disconnect because of security block 7425 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7426 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7427 if (!connection) return; 7428 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7429 } 7430 7431 7432 // Configure Secure Simple Pairing 7433 7434 #ifdef ENABLE_CLASSIC 7435 7436 // enable will enable SSP during init 7437 void gap_ssp_set_enable(int enable){ 7438 hci_stack->ssp_enable = enable; 7439 } 7440 7441 static int hci_local_ssp_activated(void){ 7442 return gap_ssp_supported() && hci_stack->ssp_enable; 7443 } 7444 7445 // if set, BTstack will respond to io capability request using authentication requirement 7446 void gap_ssp_set_io_capability(int io_capability){ 7447 hci_stack->ssp_io_capability = io_capability; 7448 } 7449 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7450 hci_stack->ssp_authentication_requirement = authentication_requirement; 7451 } 7452 7453 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7454 void gap_ssp_set_auto_accept(int auto_accept){ 7455 hci_stack->ssp_auto_accept = auto_accept; 7456 } 7457 7458 void gap_secure_connections_enable(bool enable){ 7459 hci_stack->secure_connections_enable = enable; 7460 } 7461 bool gap_secure_connections_active(void){ 7462 return hci_stack->secure_connections_active; 7463 } 7464 7465 #endif 7466 7467 // va_list part of hci_send_cmd 7468 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7469 if (!hci_can_send_command_packet_now()){ 7470 log_error("hci_send_cmd called but cannot send packet now"); 7471 return ERROR_CODE_COMMAND_DISALLOWED; 7472 } 7473 7474 // for HCI INITIALIZATION 7475 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7476 hci_stack->last_cmd_opcode = cmd->opcode; 7477 7478 hci_reserve_packet_buffer(); 7479 uint8_t * packet = hci_stack->hci_packet_buffer; 7480 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7481 uint8_t status = hci_send_cmd_packet(packet, size); 7482 7483 // release packet buffer on error or for synchronous transport implementations 7484 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7485 hci_release_packet_buffer(); 7486 hci_emit_transport_packet_sent(); 7487 } 7488 7489 return status; 7490 } 7491 7492 /** 7493 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7494 */ 7495 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7496 va_list argptr; 7497 va_start(argptr, cmd); 7498 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7499 va_end(argptr); 7500 return status; 7501 } 7502 7503 // Create various non-HCI events. 7504 // TODO: generalize, use table similar to hci_create_command 7505 7506 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7507 // dump packet 7508 if (dump) { 7509 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7510 } 7511 7512 // dispatch to all event handlers 7513 btstack_linked_list_iterator_t it; 7514 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7515 while (btstack_linked_list_iterator_has_next(&it)){ 7516 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7517 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7518 } 7519 } 7520 7521 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7522 if (!hci_stack->acl_packet_handler) return; 7523 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7524 } 7525 7526 #ifdef ENABLE_CLASSIC 7527 static void hci_notify_if_sco_can_send_now(void){ 7528 // notify SCO sender if waiting 7529 if (!hci_stack->sco_waiting_for_can_send_now) return; 7530 if (hci_can_send_sco_packet_now()){ 7531 hci_stack->sco_waiting_for_can_send_now = 0; 7532 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7533 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7534 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7535 } 7536 } 7537 7538 // parsing end emitting has been merged to reduce code size 7539 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7540 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7541 7542 uint8_t * eir_data; 7543 ad_context_t context; 7544 const uint8_t * name; 7545 uint8_t name_len; 7546 7547 if (size < 3) return; 7548 7549 int event_type = hci_event_packet_get_type(packet); 7550 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7551 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7552 7553 switch (event_type){ 7554 case HCI_EVENT_INQUIRY_RESULT: 7555 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7556 if (size != (3 + (num_responses * 14))) return; 7557 break; 7558 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7559 if (size != 257) return; 7560 if (num_responses != 1) return; 7561 break; 7562 default: 7563 return; 7564 } 7565 7566 // event[1] is set at the end 7567 int i; 7568 for (i=0; i<num_responses;i++){ 7569 memset(event, 0, sizeof(event)); 7570 event[0] = GAP_EVENT_INQUIRY_RESULT; 7571 uint8_t event_size = 27; // if name is not set by EIR 7572 7573 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7574 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7575 (void)memcpy(&event[9], 7576 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7577 3); // class of device 7578 (void)memcpy(&event[12], 7579 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7580 2); // clock offset 7581 7582 switch (event_type){ 7583 case HCI_EVENT_INQUIRY_RESULT: 7584 // 14,15,16,17 = 0, size 18 7585 break; 7586 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7587 event[14] = 1; 7588 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7589 // 16,17 = 0, size 18 7590 break; 7591 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7592 event[14] = 1; 7593 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7594 // EIR packets only contain a single inquiry response 7595 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7596 name = NULL; 7597 // Iterate over EIR data 7598 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7599 uint8_t data_type = ad_iterator_get_data_type(&context); 7600 uint8_t data_size = ad_iterator_get_data_len(&context); 7601 const uint8_t * data = ad_iterator_get_data(&context); 7602 // Prefer Complete Local Name over Shortened Local Name 7603 switch (data_type){ 7604 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7605 if (name) continue; 7606 /* fall through */ 7607 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7608 name = data; 7609 name_len = data_size; 7610 break; 7611 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7612 if (data_size != 8) break; 7613 event[16] = 1; 7614 memcpy(&event[17], data, 8); 7615 break; 7616 default: 7617 break; 7618 } 7619 } 7620 if (name){ 7621 event[25] = 1; 7622 // truncate name if needed 7623 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7624 event[26] = len; 7625 (void)memcpy(&event[27], name, len); 7626 event_size += len; 7627 } 7628 break; 7629 default: 7630 return; 7631 } 7632 event[1] = event_size - 2; 7633 hci_emit_event(event, event_size, 1); 7634 } 7635 } 7636 #endif 7637 7638 void hci_emit_state(void){ 7639 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7640 uint8_t event[3]; 7641 event[0] = BTSTACK_EVENT_STATE; 7642 event[1] = sizeof(event) - 2u; 7643 event[2] = hci_stack->state; 7644 hci_emit_event(event, sizeof(event), 1); 7645 } 7646 7647 #ifdef ENABLE_CLASSIC 7648 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7649 uint8_t event[13]; 7650 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7651 event[1] = sizeof(event) - 2; 7652 event[2] = status; 7653 little_endian_store_16(event, 3, con_handle); 7654 reverse_bd_addr(address, &event[5]); 7655 event[11] = 1; // ACL connection 7656 event[12] = 0; // encryption disabled 7657 hci_emit_event(event, sizeof(event), 1); 7658 } 7659 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7660 if (disable_l2cap_timeouts) return; 7661 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7662 uint8_t event[4]; 7663 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7664 event[1] = sizeof(event) - 2; 7665 little_endian_store_16(event, 2, conn->con_handle); 7666 hci_emit_event(event, sizeof(event), 1); 7667 } 7668 #endif 7669 7670 #ifdef ENABLE_BLE 7671 #ifdef ENABLE_LE_CENTRAL 7672 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){ 7673 uint8_t event[21]; 7674 event[0] = HCI_EVENT_LE_META; 7675 event[1] = sizeof(event) - 2u; 7676 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7677 event[3] = status; 7678 little_endian_store_16(event, 4, con_handle); 7679 event[6] = 0; // TODO: role 7680 event[7] = address_type; 7681 reverse_bd_addr(address, &event[8]); 7682 little_endian_store_16(event, 14, 0); // interval 7683 little_endian_store_16(event, 16, 0); // latency 7684 little_endian_store_16(event, 18, 0); // supervision timeout 7685 event[20] = 0; // master clock accuracy 7686 hci_emit_event(event, sizeof(event), 1); 7687 } 7688 #endif 7689 #endif 7690 7691 static void hci_emit_transport_packet_sent(void){ 7692 // notify upper stack that it might be possible to send again 7693 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7694 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7695 } 7696 7697 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7698 uint8_t event[6]; 7699 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7700 event[1] = sizeof(event) - 2u; 7701 event[2] = 0; // status = OK 7702 little_endian_store_16(event, 3, con_handle); 7703 event[5] = reason; 7704 hci_emit_event(event, sizeof(event), 1); 7705 } 7706 7707 static void hci_emit_nr_connections_changed(void){ 7708 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7709 uint8_t event[3]; 7710 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7711 event[1] = sizeof(event) - 2u; 7712 event[2] = nr_hci_connections(); 7713 hci_emit_event(event, sizeof(event), 1); 7714 } 7715 7716 static void hci_emit_hci_open_failed(void){ 7717 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7718 uint8_t event[2]; 7719 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7720 event[1] = sizeof(event) - 2u; 7721 hci_emit_event(event, sizeof(event), 1); 7722 } 7723 7724 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7725 log_info("hci_emit_dedicated_bonding_result %u ", status); 7726 uint8_t event[9]; 7727 int pos = 0; 7728 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7729 event[pos++] = sizeof(event) - 2u; 7730 event[pos++] = status; 7731 reverse_bd_addr(address, &event[pos]); 7732 hci_emit_event(event, sizeof(event), 1); 7733 } 7734 7735 7736 #ifdef ENABLE_CLASSIC 7737 7738 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7739 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7740 uint8_t event[5]; 7741 int pos = 0; 7742 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7743 event[pos++] = sizeof(event) - 2; 7744 little_endian_store_16(event, 2, con_handle); 7745 pos += 2; 7746 event[pos++] = level; 7747 hci_emit_event(event, sizeof(event), 1); 7748 } 7749 7750 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7751 if (!connection) return LEVEL_0; 7752 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7753 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7754 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7755 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7756 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7757 // LEVEL 4 always requires 128 bit encrytion key size 7758 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7759 security_level = LEVEL_3; 7760 } 7761 return security_level; 7762 } 7763 7764 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7765 uint8_t event[4]; 7766 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7767 event[1] = sizeof(event) - 2; 7768 event[2] = discoverable; 7769 event[3] = connectable; 7770 hci_emit_event(event, sizeof(event), 1); 7771 } 7772 7773 // query if remote side supports eSCO 7774 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7775 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7776 if (!connection) return false; 7777 return (connection->remote_supported_features[0] & 1) != 0; 7778 } 7779 7780 static bool hci_ssp_supported(hci_connection_t * connection){ 7781 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7782 return (connection->bonding_flags & mask) == mask; 7783 } 7784 7785 // query if remote side supports SSP 7786 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7787 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7788 if (!connection) return false; 7789 return hci_ssp_supported(connection) ? 1 : 0; 7790 } 7791 7792 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7793 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7794 } 7795 7796 /** 7797 * Check if remote supported features query has completed 7798 */ 7799 bool hci_remote_features_available(hci_con_handle_t handle){ 7800 hci_connection_t * connection = hci_connection_for_handle(handle); 7801 if (!connection) return false; 7802 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7803 } 7804 7805 /** 7806 * Trigger remote supported features query 7807 */ 7808 7809 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7810 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7811 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7812 } 7813 } 7814 7815 void hci_remote_features_query(hci_con_handle_t con_handle){ 7816 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7817 if (!connection) return; 7818 hci_trigger_remote_features_for_connection(connection); 7819 hci_run(); 7820 } 7821 7822 // GAP API 7823 /** 7824 * @bbrief enable/disable bonding. default is enabled 7825 * @praram enabled 7826 */ 7827 void gap_set_bondable_mode(int enable){ 7828 hci_stack->bondable = enable ? 1 : 0; 7829 } 7830 /** 7831 * @brief Get bondable mode. 7832 * @return 1 if bondable 7833 */ 7834 int gap_get_bondable_mode(void){ 7835 return hci_stack->bondable; 7836 } 7837 7838 /** 7839 * @brief map link keys to security levels 7840 */ 7841 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7842 switch (link_key_type){ 7843 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7844 return LEVEL_4; 7845 case COMBINATION_KEY: 7846 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7847 return LEVEL_3; 7848 default: 7849 return LEVEL_2; 7850 } 7851 } 7852 7853 /** 7854 * @brief map link keys to secure connection yes/no 7855 */ 7856 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7857 switch (link_key_type){ 7858 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7859 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7860 return true; 7861 default: 7862 return false; 7863 } 7864 } 7865 7866 /** 7867 * @brief map link keys to authenticated 7868 */ 7869 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7870 switch (link_key_type){ 7871 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7872 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7873 return true; 7874 default: 7875 return false; 7876 } 7877 } 7878 7879 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7880 log_info("gap_mitm_protection_required_for_security_level %u", level); 7881 return level > LEVEL_2; 7882 } 7883 7884 /** 7885 * @brief get current security level 7886 */ 7887 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7888 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7889 if (!connection) return LEVEL_0; 7890 return gap_security_level_for_connection(connection); 7891 } 7892 7893 /** 7894 * @brief request connection to device to 7895 * @result GAP_AUTHENTICATION_RESULT 7896 */ 7897 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7898 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7899 if (!connection){ 7900 hci_emit_security_level(con_handle, LEVEL_0); 7901 return; 7902 } 7903 7904 btstack_assert(hci_is_le_connection(connection) == false); 7905 7906 // 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) 7907 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7908 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7909 requested_level = LEVEL_4; 7910 } 7911 7912 gap_security_level_t current_level = gap_security_level(con_handle); 7913 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7914 requested_level, connection->requested_security_level, current_level); 7915 7916 // authentication active if authentication request was sent or planned level > 0 7917 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7918 if (authentication_active){ 7919 // authentication already active 7920 if (connection->requested_security_level < requested_level){ 7921 // increase requested level as new level is higher 7922 // TODO: handle re-authentication when done 7923 connection->requested_security_level = requested_level; 7924 } 7925 } else { 7926 // no request active, notify if security sufficient 7927 if (requested_level <= current_level){ 7928 hci_emit_security_level(con_handle, current_level); 7929 return; 7930 } 7931 7932 // store request 7933 connection->requested_security_level = requested_level; 7934 7935 // start to authenticate connection 7936 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7937 7938 // request remote features if not already active, also trigger hci_run 7939 hci_remote_features_query(con_handle); 7940 } 7941 } 7942 7943 /** 7944 * @brief start dedicated bonding with device. disconnect after bonding 7945 * @param device 7946 * @param request MITM protection 7947 * @result GAP_DEDICATED_BONDING_COMPLETE 7948 */ 7949 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7950 7951 // create connection state machine 7952 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7953 7954 if (!connection){ 7955 return BTSTACK_MEMORY_ALLOC_FAILED; 7956 } 7957 7958 // delete linkn key 7959 gap_drop_link_key_for_bd_addr(device); 7960 7961 // configure LEVEL_2/3, dedicated bonding 7962 connection->state = SEND_CREATE_CONNECTION; 7963 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7964 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7965 connection->bonding_flags = BONDING_DEDICATED; 7966 7967 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7968 7969 // handle: connnection failure (connection complete != ok) 7970 // handle: authentication failure 7971 // handle: disconnect on done 7972 7973 hci_run(); 7974 7975 return 0; 7976 } 7977 7978 void gap_set_local_name(const char * local_name){ 7979 hci_stack->local_name = local_name; 7980 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7981 // also update EIR if not set by user 7982 if (hci_stack->eir_data == NULL){ 7983 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7984 } 7985 hci_run(); 7986 } 7987 #endif 7988 7989 7990 #ifdef ENABLE_BLE 7991 7992 #ifdef ENABLE_LE_CENTRAL 7993 void gap_start_scan(void){ 7994 hci_stack->le_scanning_enabled = true; 7995 hci_run(); 7996 } 7997 7998 void gap_stop_scan(void){ 7999 hci_stack->le_scanning_enabled = false; 8000 hci_run(); 8001 } 8002 8003 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8004 hci_stack->le_scan_type = scan_type; 8005 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8006 hci_stack->le_scan_interval = scan_interval; 8007 hci_stack->le_scan_window = scan_window; 8008 hci_stack->le_scanning_param_update = true; 8009 hci_run(); 8010 } 8011 8012 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8013 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8014 } 8015 8016 void gap_set_scan_duplicate_filter(bool enabled){ 8017 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8018 } 8019 8020 void gap_set_scan_phys(uint8_t phys){ 8021 // LE Coded and LE 1M PHY 8022 hci_stack->le_scan_phys = phys & 0x05; 8023 } 8024 8025 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8026 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8027 if (!conn){ 8028 // disallow if le connection is already outgoing 8029 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8030 log_error("le connection already active"); 8031 return ERROR_CODE_COMMAND_DISALLOWED; 8032 } 8033 8034 log_info("gap_connect: no connection exists yet, creating context"); 8035 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8036 if (!conn){ 8037 // notify client that alloc failed 8038 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8039 log_info("gap_connect: failed to alloc hci_connection_t"); 8040 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8041 } 8042 8043 // set le connecting state 8044 if (hci_is_le_connection_type(addr_type)){ 8045 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8046 } 8047 8048 conn->state = SEND_CREATE_CONNECTION; 8049 log_info("gap_connect: send create connection next"); 8050 hci_run(); 8051 return ERROR_CODE_SUCCESS; 8052 } 8053 8054 if (!hci_is_le_connection(conn) || 8055 (conn->state == SEND_CREATE_CONNECTION) || 8056 (conn->state == SENT_CREATE_CONNECTION)) { 8057 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8058 log_error("gap_connect: classic connection or connect is already being created"); 8059 return GATT_CLIENT_IN_WRONG_STATE; 8060 } 8061 8062 // check if connection was just disconnected 8063 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8064 log_info("gap_connect: send create connection (again)"); 8065 conn->state = SEND_CREATE_CONNECTION; 8066 hci_run(); 8067 return ERROR_CODE_SUCCESS; 8068 } 8069 8070 log_info("gap_connect: context exists with state %u", conn->state); 8071 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8072 hci_run(); 8073 return ERROR_CODE_SUCCESS; 8074 } 8075 8076 // @assumption: only a single outgoing LE Connection exists 8077 static hci_connection_t * gap_get_outgoing_connection(void){ 8078 btstack_linked_item_t *it; 8079 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8080 hci_connection_t * conn = (hci_connection_t *) it; 8081 if (!hci_is_le_connection(conn)) continue; 8082 switch (conn->state){ 8083 case SEND_CREATE_CONNECTION: 8084 case SENT_CREATE_CONNECTION: 8085 return conn; 8086 default: 8087 break; 8088 }; 8089 } 8090 return NULL; 8091 } 8092 8093 uint8_t gap_connect_cancel(void){ 8094 hci_connection_t * conn; 8095 switch (hci_stack->le_connecting_request){ 8096 case LE_CONNECTING_IDLE: 8097 break; 8098 case LE_CONNECTING_WHITELIST: 8099 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8100 hci_run(); 8101 break; 8102 case LE_CONNECTING_DIRECT: 8103 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8104 conn = gap_get_outgoing_connection(); 8105 if (conn == NULL){ 8106 hci_run(); 8107 } else { 8108 switch (conn->state){ 8109 case SEND_CREATE_CONNECTION: 8110 // skip sending create connection and emit event instead 8111 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8112 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8113 btstack_memory_hci_connection_free( conn ); 8114 break; 8115 case SENT_CREATE_CONNECTION: 8116 // let hci_run_general_gap_le cancel outgoing connection 8117 hci_run(); 8118 break; 8119 default: 8120 break; 8121 } 8122 } 8123 break; 8124 default: 8125 btstack_unreachable(); 8126 break; 8127 } 8128 return ERROR_CODE_SUCCESS; 8129 } 8130 8131 /** 8132 * @brief Set connection parameters for outgoing connections 8133 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8134 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8135 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8136 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8137 * @param conn_latency, default: 4 8138 * @param supervision_timeout (unit: 10ms), default: 720 ms 8139 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8140 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8141 */ 8142 8143 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8144 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8145 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8146 hci_stack->le_connection_scan_interval = conn_scan_interval; 8147 hci_stack->le_connection_scan_window = conn_scan_window; 8148 hci_stack->le_connection_interval_min = conn_interval_min; 8149 hci_stack->le_connection_interval_max = conn_interval_max; 8150 hci_stack->le_connection_latency = conn_latency; 8151 hci_stack->le_supervision_timeout = supervision_timeout; 8152 hci_stack->le_minimum_ce_length = min_ce_length; 8153 hci_stack->le_maximum_ce_length = max_ce_length; 8154 } 8155 8156 void gap_set_connection_phys(uint8_t phys){ 8157 // LE Coded, LE 1M, LE 2M PHY 8158 hci_stack->le_connection_phys = phys & 7; 8159 } 8160 8161 #endif 8162 8163 /** 8164 * @brief Updates the connection parameters for a given LE connection 8165 * @param handle 8166 * @param conn_interval_min (unit: 1.25ms) 8167 * @param conn_interval_max (unit: 1.25ms) 8168 * @param conn_latency 8169 * @param supervision_timeout (unit: 10ms) 8170 * @return 0 if ok 8171 */ 8172 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8173 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8174 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8175 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8176 connection->le_conn_interval_min = conn_interval_min; 8177 connection->le_conn_interval_max = conn_interval_max; 8178 connection->le_conn_latency = conn_latency; 8179 connection->le_supervision_timeout = supervision_timeout; 8180 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8181 hci_run(); 8182 return 0; 8183 } 8184 8185 /** 8186 * @brief Request an update of the connection parameter for a given LE connection 8187 * @param handle 8188 * @param conn_interval_min (unit: 1.25ms) 8189 * @param conn_interval_max (unit: 1.25ms) 8190 * @param conn_latency 8191 * @param supervision_timeout (unit: 10ms) 8192 * @return 0 if ok 8193 */ 8194 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8195 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8196 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8197 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8198 connection->le_conn_interval_min = conn_interval_min; 8199 connection->le_conn_interval_max = conn_interval_max; 8200 connection->le_conn_latency = conn_latency; 8201 connection->le_supervision_timeout = supervision_timeout; 8202 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8203 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8204 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8205 return 0; 8206 } 8207 8208 #ifdef ENABLE_LE_PERIPHERAL 8209 8210 /** 8211 * @brief Set Advertisement Data 8212 * @param advertising_data_length 8213 * @param advertising_data (max 31 octets) 8214 * @note data is not copied, pointer has to stay valid 8215 */ 8216 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8217 hci_stack->le_advertisements_data_len = advertising_data_length; 8218 hci_stack->le_advertisements_data = advertising_data; 8219 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8220 hci_run(); 8221 } 8222 8223 /** 8224 * @brief Set Scan Response Data 8225 * @param advertising_data_length 8226 * @param advertising_data (max 31 octets) 8227 * @note data is not copied, pointer has to stay valid 8228 */ 8229 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8230 hci_stack->le_scan_response_data_len = scan_response_data_length; 8231 hci_stack->le_scan_response_data = scan_response_data; 8232 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8233 hci_run(); 8234 } 8235 8236 /** 8237 * @brief Set Advertisement Parameters 8238 * @param adv_int_min 8239 * @param adv_int_max 8240 * @param adv_type 8241 * @param direct_address_type 8242 * @param direct_address 8243 * @param channel_map 8244 * @param filter_policy 8245 * 8246 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8247 */ 8248 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8249 uint8_t direct_address_typ, bd_addr_t direct_address, 8250 uint8_t channel_map, uint8_t filter_policy) { 8251 8252 hci_stack->le_advertisements_interval_min = adv_int_min; 8253 hci_stack->le_advertisements_interval_max = adv_int_max; 8254 hci_stack->le_advertisements_type = adv_type; 8255 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8256 hci_stack->le_advertisements_channel_map = channel_map; 8257 hci_stack->le_advertisements_filter_policy = filter_policy; 8258 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8259 6); 8260 8261 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8262 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8263 hci_run(); 8264 } 8265 8266 /** 8267 * @brief Enable/Disable Advertisements 8268 * @param enabled 8269 */ 8270 void gap_advertisements_enable(int enabled){ 8271 if (enabled == 0){ 8272 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8273 } else { 8274 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8275 } 8276 hci_update_advertisements_enabled_for_current_roles(); 8277 hci_run(); 8278 } 8279 8280 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8281 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8282 btstack_linked_list_iterator_t it; 8283 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8284 while (btstack_linked_list_iterator_has_next(&it)){ 8285 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8286 if ( item->advertising_handle == advertising_handle ) { 8287 return item; 8288 } 8289 } 8290 return NULL; 8291 } 8292 8293 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8294 // find free advertisement handle 8295 uint8_t advertisement_handle; 8296 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8297 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8298 } 8299 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8300 // clear 8301 memset(storage, 0, sizeof(le_advertising_set_t)); 8302 // copy params 8303 storage->advertising_handle = advertisement_handle; 8304 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8305 // add to list 8306 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8307 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8308 *out_advertising_handle = advertisement_handle; 8309 // set tasks and start 8310 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8311 hci_run(); 8312 return ERROR_CODE_SUCCESS; 8313 } 8314 8315 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8316 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8317 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8318 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8319 // set tasks and start 8320 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8321 hci_run(); 8322 return ERROR_CODE_SUCCESS; 8323 } 8324 8325 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 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_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8329 return ERROR_CODE_SUCCESS; 8330 } 8331 8332 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8333 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8334 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8335 memcpy(advertising_set->random_address, random_address, 6); 8336 // set tasks and start 8337 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8338 hci_run(); 8339 return ERROR_CODE_SUCCESS; 8340 } 8341 8342 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8343 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8344 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8345 advertising_set->adv_data = advertising_data; 8346 advertising_set->adv_data_len = advertising_data_length; 8347 // set tasks and start 8348 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8349 hci_run(); 8350 return ERROR_CODE_SUCCESS; 8351 } 8352 8353 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){ 8354 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8355 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8356 advertising_set->scan_data = scan_response_data; 8357 advertising_set->scan_data_len = scan_response_data_length; 8358 // set tasks and start 8359 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8360 hci_run(); 8361 return ERROR_CODE_SUCCESS; 8362 } 8363 8364 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8365 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8366 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8367 advertising_set->enable_timeout = timeout; 8368 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8369 // set tasks and start 8370 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8371 hci_run(); 8372 return ERROR_CODE_SUCCESS; 8373 } 8374 8375 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8376 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8377 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8378 // set tasks and start 8379 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8380 hci_run(); 8381 return ERROR_CODE_SUCCESS; 8382 } 8383 8384 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8385 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8386 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8387 // set tasks and start 8388 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8389 hci_run(); 8390 return ERROR_CODE_SUCCESS; 8391 } 8392 8393 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8394 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8395 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8396 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8397 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8398 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8399 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8400 // set tasks and start 8401 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8402 hci_run(); 8403 return ERROR_CODE_SUCCESS; 8404 } 8405 8406 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 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 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8410 return ERROR_CODE_SUCCESS; 8411 } 8412 8413 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8414 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8415 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8416 advertising_set->periodic_data = periodic_data; 8417 advertising_set->periodic_data_len = periodic_data_length; 8418 // set tasks and start 8419 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8420 hci_run(); 8421 return ERROR_CODE_SUCCESS; 8422 } 8423 8424 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8425 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8426 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8427 // set tasks and start 8428 advertising_set->periodic_include_adi = include_adi; 8429 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8430 hci_run(); 8431 return ERROR_CODE_SUCCESS; 8432 } 8433 8434 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8435 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8436 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8437 // set tasks and start 8438 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8439 hci_run(); 8440 return ERROR_CODE_SUCCESS; 8441 } 8442 8443 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8444 hci_stack->le_past_mode = mode; 8445 hci_stack->le_past_skip = skip; 8446 hci_stack->le_past_sync_timeout = sync_timeout; 8447 hci_stack->le_past_cte_type = cte_type; 8448 hci_stack->le_past_set_default_params = true; 8449 hci_run(); 8450 return ERROR_CODE_SUCCESS; 8451 } 8452 8453 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8454 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8455 if (hci_connection == NULL){ 8456 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8457 } 8458 hci_connection->le_past_sync_handle = sync_handle; 8459 hci_connection->le_past_service_data = service_data; 8460 hci_run(); 8461 return ERROR_CODE_SUCCESS; 8462 } 8463 8464 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8465 8466 #endif 8467 8468 #endif 8469 8470 void hci_le_set_own_address_type(uint8_t own_address_type){ 8471 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8472 if (own_address_type == hci_stack->le_own_addr_type) return; 8473 hci_stack->le_own_addr_type = own_address_type; 8474 8475 #ifdef ENABLE_LE_PERIPHERAL 8476 // update advertisement parameters, too 8477 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8478 hci_run(); 8479 #endif 8480 #ifdef ENABLE_LE_CENTRAL 8481 // note: we don't update scan parameters or modify ongoing connection attempts 8482 #endif 8483 } 8484 8485 void hci_le_random_address_set(const bd_addr_t random_address){ 8486 memcpy(hci_stack->le_random_address, random_address, 6); 8487 hci_stack->le_random_address_set = true; 8488 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8489 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8490 if (hci_extended_advertising_supported()){ 8491 // force advertising set creation for LE Set Advertising Set Random Address 8492 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8493 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8494 } 8495 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8496 } 8497 #endif 8498 hci_run(); 8499 } 8500 8501 #endif 8502 8503 uint8_t gap_disconnect(hci_con_handle_t handle){ 8504 hci_connection_t * conn = hci_connection_for_handle(handle); 8505 if (!conn){ 8506 hci_emit_disconnection_complete(handle, 0); 8507 return 0; 8508 } 8509 // ignore if already disconnected 8510 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8511 return 0; 8512 } 8513 conn->state = SEND_DISCONNECT; 8514 hci_run(); 8515 return 0; 8516 } 8517 8518 int gap_read_rssi(hci_con_handle_t con_handle){ 8519 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8520 if (hci_connection == NULL) return 0; 8521 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8522 hci_run(); 8523 return 1; 8524 } 8525 8526 /** 8527 * @brief Get connection type 8528 * @param con_handle 8529 * @result connection_type 8530 */ 8531 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8532 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8533 if (!conn) return GAP_CONNECTION_INVALID; 8534 switch (conn->address_type){ 8535 case BD_ADDR_TYPE_LE_PUBLIC: 8536 case BD_ADDR_TYPE_LE_RANDOM: 8537 return GAP_CONNECTION_LE; 8538 case BD_ADDR_TYPE_SCO: 8539 return GAP_CONNECTION_SCO; 8540 case BD_ADDR_TYPE_ACL: 8541 return GAP_CONNECTION_ACL; 8542 default: 8543 return GAP_CONNECTION_INVALID; 8544 } 8545 } 8546 8547 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8548 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8549 if (!conn) return HCI_ROLE_INVALID; 8550 return (hci_role_t) conn->role; 8551 } 8552 8553 8554 #ifdef ENABLE_CLASSIC 8555 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8556 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8557 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8558 conn->request_role = role; 8559 hci_run(); 8560 return ERROR_CODE_SUCCESS; 8561 } 8562 #endif 8563 8564 #ifdef ENABLE_BLE 8565 8566 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){ 8567 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8568 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8569 8570 conn->le_phy_update_all_phys = all_phys; 8571 conn->le_phy_update_tx_phys = tx_phys; 8572 conn->le_phy_update_rx_phys = rx_phys; 8573 conn->le_phy_update_phy_options = phy_options; 8574 8575 hci_run(); 8576 8577 return 0; 8578 } 8579 8580 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8581 // check if already in list 8582 btstack_linked_list_iterator_t it; 8583 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8584 while (btstack_linked_list_iterator_has_next(&it)) { 8585 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8586 if (entry->address_type != address_type) { 8587 continue; 8588 } 8589 if (memcmp(entry->address, address, 6) != 0) { 8590 continue; 8591 } 8592 // disallow if already scheduled to add 8593 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8594 return ERROR_CODE_COMMAND_DISALLOWED; 8595 } 8596 // still on controller, but scheduled to remove -> re-add 8597 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8598 return ERROR_CODE_SUCCESS; 8599 } 8600 // alloc and add to list 8601 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8602 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8603 entry->address_type = address_type; 8604 (void)memcpy(entry->address, address, 6); 8605 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8606 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8607 return ERROR_CODE_SUCCESS; 8608 } 8609 8610 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8611 btstack_linked_list_iterator_t it; 8612 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8613 while (btstack_linked_list_iterator_has_next(&it)){ 8614 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8615 if (entry->address_type != address_type) { 8616 continue; 8617 } 8618 if (memcmp(entry->address, address, 6) != 0) { 8619 continue; 8620 } 8621 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8622 // remove from controller if already present 8623 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8624 } else { 8625 // directly remove entry from whitelist 8626 btstack_linked_list_iterator_remove(&it); 8627 btstack_memory_whitelist_entry_free(entry); 8628 } 8629 return ERROR_CODE_SUCCESS; 8630 } 8631 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8632 } 8633 8634 static void hci_whitelist_clear(void){ 8635 btstack_linked_list_iterator_t it; 8636 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8637 while (btstack_linked_list_iterator_has_next(&it)){ 8638 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8639 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8640 // remove from controller if already present 8641 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8642 continue; 8643 } 8644 // directly remove entry from whitelist 8645 btstack_linked_list_iterator_remove(&it); 8646 btstack_memory_whitelist_entry_free(entry); 8647 } 8648 } 8649 8650 /** 8651 * @brief Clear Whitelist 8652 * @return 0 if ok 8653 */ 8654 uint8_t gap_whitelist_clear(void){ 8655 hci_whitelist_clear(); 8656 hci_run(); 8657 return ERROR_CODE_SUCCESS; 8658 } 8659 8660 /** 8661 * @brief Add Device to Whitelist 8662 * @param address_typ 8663 * @param address 8664 * @return 0 if ok 8665 */ 8666 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8667 uint8_t status = hci_whitelist_add(address_type, address); 8668 if (status){ 8669 return status; 8670 } 8671 hci_run(); 8672 return ERROR_CODE_SUCCESS; 8673 } 8674 8675 /** 8676 * @brief Remove Device from Whitelist 8677 * @param address_typ 8678 * @param address 8679 * @return 0 if ok 8680 */ 8681 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8682 uint8_t status = hci_whitelist_remove(address_type, address); 8683 if (status){ 8684 return status; 8685 } 8686 hci_run(); 8687 return ERROR_CODE_SUCCESS; 8688 } 8689 8690 #ifdef ENABLE_LE_CENTRAL 8691 /** 8692 * @brief Connect with Whitelist 8693 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8694 * @return - if ok 8695 */ 8696 uint8_t gap_connect_with_whitelist(void){ 8697 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8698 return ERROR_CODE_COMMAND_DISALLOWED; 8699 } 8700 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8701 hci_run(); 8702 return ERROR_CODE_SUCCESS; 8703 } 8704 8705 /** 8706 * @brief Auto Connection Establishment - Start Connecting to device 8707 * @param address_typ 8708 * @param address 8709 * @return 0 if ok 8710 */ 8711 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8712 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8713 return ERROR_CODE_COMMAND_DISALLOWED; 8714 } 8715 8716 uint8_t status = hci_whitelist_add(address_type, address); 8717 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8718 return status; 8719 } 8720 8721 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8722 8723 hci_run(); 8724 return ERROR_CODE_SUCCESS; 8725 } 8726 8727 /** 8728 * @brief Auto Connection Establishment - Stop Connecting to device 8729 * @param address_typ 8730 * @param address 8731 * @return 0 if ok 8732 */ 8733 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8734 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8735 return ERROR_CODE_COMMAND_DISALLOWED; 8736 } 8737 8738 hci_whitelist_remove(address_type, address); 8739 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8740 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8741 } 8742 hci_run(); 8743 return 0; 8744 } 8745 8746 /** 8747 * @brief Auto Connection Establishment - Stop everything 8748 * @note Convenience function to stop all active auto connection attempts 8749 */ 8750 uint8_t gap_auto_connection_stop_all(void){ 8751 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8752 return ERROR_CODE_COMMAND_DISALLOWED; 8753 } 8754 hci_whitelist_clear(); 8755 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8756 hci_run(); 8757 return ERROR_CODE_SUCCESS; 8758 } 8759 8760 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8761 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8762 if (!conn) return 0; 8763 return conn->le_connection_interval; 8764 } 8765 #endif 8766 #endif 8767 8768 #ifdef ENABLE_CLASSIC 8769 /** 8770 * @brief Set Extended Inquiry Response data 8771 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8772 * @note has to be done before stack starts up 8773 */ 8774 void gap_set_extended_inquiry_response(const uint8_t * data){ 8775 hci_stack->eir_data = data; 8776 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8777 hci_run(); 8778 } 8779 8780 /** 8781 * @brief Start GAP Classic Inquiry 8782 * @param duration in 1.28s units 8783 * @return 0 if ok 8784 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8785 */ 8786 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8787 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8788 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8789 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8790 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8791 } 8792 hci_stack->inquiry_state = duration_in_1280ms_units; 8793 hci_stack->inquiry_max_period_length = 0; 8794 hci_stack->inquiry_min_period_length = 0; 8795 hci_run(); 8796 return 0; 8797 } 8798 8799 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8800 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8801 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8802 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8803 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8804 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8805 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8806 8807 hci_stack->inquiry_state = duration; 8808 hci_stack->inquiry_max_period_length = max_period_length; 8809 hci_stack->inquiry_min_period_length = min_period_length; 8810 hci_run(); 8811 return 0; 8812 } 8813 8814 /** 8815 * @brief Stop GAP Classic Inquiry 8816 * @return 0 if ok 8817 */ 8818 int gap_inquiry_stop(void){ 8819 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8820 // emit inquiry complete event, before it even started 8821 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8822 hci_emit_event(event, sizeof(event), 1); 8823 return 0; 8824 } 8825 switch (hci_stack->inquiry_state){ 8826 case GAP_INQUIRY_STATE_ACTIVE: 8827 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8828 hci_run(); 8829 return ERROR_CODE_SUCCESS; 8830 case GAP_INQUIRY_STATE_PERIODIC: 8831 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8832 hci_run(); 8833 return ERROR_CODE_SUCCESS; 8834 default: 8835 return ERROR_CODE_COMMAND_DISALLOWED; 8836 } 8837 } 8838 8839 void gap_inquiry_set_lap(uint32_t lap){ 8840 hci_stack->inquiry_lap = lap; 8841 } 8842 8843 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8844 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8845 hci_stack->inquiry_scan_window = inquiry_scan_window; 8846 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8847 hci_run(); 8848 } 8849 8850 8851 /** 8852 * @brief Remote Name Request 8853 * @param addr 8854 * @param page_scan_repetition_mode 8855 * @param clock_offset only used when bit 15 is set 8856 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8857 */ 8858 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8859 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8860 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8861 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8862 hci_stack->remote_name_clock_offset = clock_offset; 8863 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8864 hci_run(); 8865 return 0; 8866 } 8867 8868 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8869 hci_stack->gap_pairing_state = state; 8870 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8871 hci_run(); 8872 return 0; 8873 } 8874 8875 /** 8876 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8877 * @param addr 8878 * @param pin_data 8879 * @param pin_len 8880 * @return 0 if ok 8881 */ 8882 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8883 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8884 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8885 hci_stack->gap_pairing_pin_len = pin_len; 8886 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8887 } 8888 8889 /** 8890 * @brief Legacy Pairing Pin Code Response 8891 * @param addr 8892 * @param pin 8893 * @return 0 if ok 8894 */ 8895 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8896 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8897 } 8898 8899 /** 8900 * @brief Abort Legacy Pairing 8901 * @param addr 8902 * @param pin 8903 * @return 0 if ok 8904 */ 8905 int gap_pin_code_negative(bd_addr_t addr){ 8906 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8907 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8908 } 8909 8910 /** 8911 * @brief SSP Passkey Response 8912 * @param addr 8913 * @param passkey 8914 * @return 0 if ok 8915 */ 8916 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8917 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8918 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8919 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8920 } 8921 8922 /** 8923 * @brief Abort SSP Passkey Entry/Pairing 8924 * @param addr 8925 * @param pin 8926 * @return 0 if ok 8927 */ 8928 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8929 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8930 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8931 } 8932 8933 /** 8934 * @brief Accept SSP Numeric Comparison 8935 * @param addr 8936 * @param passkey 8937 * @return 0 if ok 8938 */ 8939 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8940 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8941 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8942 } 8943 8944 /** 8945 * @brief Abort SSP Numeric Comparison/Pairing 8946 * @param addr 8947 * @param pin 8948 * @return 0 if ok 8949 */ 8950 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8951 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8952 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8953 } 8954 8955 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8956 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8957 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8958 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8959 connectionSetAuthenticationFlags(conn, flag); 8960 hci_run(); 8961 return ERROR_CODE_SUCCESS; 8962 } 8963 #endif 8964 8965 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8966 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8967 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8968 } 8969 8970 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8971 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8972 } 8973 #endif 8974 8975 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8976 /** 8977 * @brief Report Remote OOB Data 8978 * @param bd_addr 8979 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8980 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8981 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8982 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8983 */ 8984 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){ 8985 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8986 if (connection == NULL) { 8987 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8988 } 8989 connection->classic_oob_c_192 = c_192; 8990 connection->classic_oob_r_192 = r_192; 8991 8992 // ignore P-256 if not supported by us 8993 if (hci_stack->secure_connections_active){ 8994 connection->classic_oob_c_256 = c_256; 8995 connection->classic_oob_r_256 = r_256; 8996 } 8997 8998 return ERROR_CODE_SUCCESS; 8999 } 9000 /** 9001 * @brief Generate new OOB data 9002 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9003 */ 9004 void gap_ssp_generate_oob_data(void){ 9005 hci_stack->classic_read_local_oob_data = true; 9006 hci_run(); 9007 } 9008 9009 #endif 9010 9011 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9012 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9013 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9014 if (connection == NULL) { 9015 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9016 } 9017 9018 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9019 connection->link_key_type = type; 9020 9021 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9022 } 9023 9024 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9025 /** 9026 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9027 * @param inquiry_mode see bluetooth_defines.h 9028 */ 9029 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9030 hci_stack->inquiry_mode = inquiry_mode; 9031 } 9032 9033 /** 9034 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9035 */ 9036 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9037 hci_stack->sco_voice_setting = voice_setting; 9038 } 9039 9040 /** 9041 * @brief Get SCO Voice Setting 9042 * @return current voice setting 9043 */ 9044 uint16_t hci_get_sco_voice_setting(void){ 9045 return hci_stack->sco_voice_setting; 9046 } 9047 9048 static int hci_have_usb_transport(void){ 9049 if (!hci_stack->hci_transport) return 0; 9050 const char * transport_name = hci_stack->hci_transport->name; 9051 if (!transport_name) return 0; 9052 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9053 } 9054 9055 /** @brief Get SCO packet length for current SCO Voice setting 9056 * @note Using SCO packets of the exact length is required for USB transfer 9057 * @return Length of SCO packets in bytes (not audio frames) 9058 */ 9059 uint16_t hci_get_sco_packet_length(void){ 9060 uint16_t sco_packet_length = 0; 9061 9062 #ifdef ENABLE_SCO_OVER_HCI 9063 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9064 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9065 9066 if (hci_have_usb_transport()){ 9067 // see Core Spec for H2 USB Transfer. 9068 // 3 byte SCO header + 24 bytes per connection 9069 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 9070 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 9071 } else { 9072 // 3 byte SCO header + SCO packet size over the air (60 bytes) 9073 sco_packet_length = 3 + 60 * multiplier; 9074 // assert that it still fits inside an SCO buffer 9075 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9076 sco_packet_length = 3 + 60; 9077 } 9078 } 9079 #endif 9080 9081 #ifdef HAVE_SCO_TRANSPORT 9082 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9083 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9084 sco_packet_length = 3 + 60 * multiplier; 9085 #endif 9086 return sco_packet_length; 9087 } 9088 9089 /** 9090 * @brief Sets the master/slave policy 9091 * @param policy (0: attempt to become master, 1: let connecting device decide) 9092 */ 9093 void hci_set_master_slave_policy(uint8_t policy){ 9094 hci_stack->master_slave_policy = policy; 9095 } 9096 9097 #endif 9098 9099 HCI_STATE hci_get_state(void){ 9100 return hci_stack->state; 9101 } 9102 9103 #ifdef ENABLE_CLASSIC 9104 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9105 hci_stack->gap_classic_accept_callback = accept_callback; 9106 } 9107 #endif 9108 9109 /** 9110 * @brief Set callback for Bluetooth Hardware Error 9111 */ 9112 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9113 hci_stack->hardware_error_callback = fn; 9114 } 9115 9116 void hci_disconnect_all(void){ 9117 btstack_linked_list_iterator_t it; 9118 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9119 while (btstack_linked_list_iterator_has_next(&it)){ 9120 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9121 if (con->state == SENT_DISCONNECT) continue; 9122 con->state = SEND_DISCONNECT; 9123 } 9124 hci_run(); 9125 } 9126 9127 uint16_t hci_get_manufacturer(void){ 9128 return hci_stack->manufacturer; 9129 } 9130 9131 #ifdef ENABLE_BLE 9132 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9133 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9134 if (!hci_con) return NULL; 9135 return &hci_con->sm_connection; 9136 } 9137 9138 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9139 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9140 #endif 9141 9142 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9143 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9144 if (hci_connection == NULL) return 0; 9145 if (hci_is_le_connection(hci_connection)){ 9146 #ifdef ENABLE_BLE 9147 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9148 if (sm_conn->sm_connection_encrypted) { 9149 return sm_conn->sm_actual_encryption_key_size; 9150 } 9151 #endif 9152 } else { 9153 #ifdef ENABLE_CLASSIC 9154 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9155 return hci_connection->encryption_key_size; 9156 } 9157 #endif 9158 } 9159 return 0; 9160 } 9161 9162 bool gap_authenticated(hci_con_handle_t con_handle){ 9163 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9164 if (hci_connection == NULL) return false; 9165 9166 switch (hci_connection->address_type){ 9167 #ifdef ENABLE_BLE 9168 case BD_ADDR_TYPE_LE_PUBLIC: 9169 case BD_ADDR_TYPE_LE_RANDOM: 9170 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9171 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9172 #endif 9173 #ifdef ENABLE_CLASSIC 9174 case BD_ADDR_TYPE_SCO: 9175 case BD_ADDR_TYPE_ACL: 9176 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9177 #endif 9178 default: 9179 return false; 9180 } 9181 } 9182 9183 bool gap_secure_connection(hci_con_handle_t con_handle){ 9184 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9185 if (hci_connection == NULL) return 0; 9186 9187 switch (hci_connection->address_type){ 9188 #ifdef ENABLE_BLE 9189 case BD_ADDR_TYPE_LE_PUBLIC: 9190 case BD_ADDR_TYPE_LE_RANDOM: 9191 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9192 return hci_connection->sm_connection.sm_connection_sc != 0; 9193 #endif 9194 #ifdef ENABLE_CLASSIC 9195 case BD_ADDR_TYPE_SCO: 9196 case BD_ADDR_TYPE_ACL: 9197 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9198 #endif 9199 default: 9200 return false; 9201 } 9202 } 9203 9204 bool gap_bonded(hci_con_handle_t con_handle){ 9205 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9206 if (hci_connection == NULL) return 0; 9207 9208 #ifdef ENABLE_CLASSIC 9209 link_key_t link_key; 9210 link_key_type_t link_key_type; 9211 #endif 9212 switch (hci_connection->address_type){ 9213 #ifdef ENABLE_BLE 9214 case BD_ADDR_TYPE_LE_PUBLIC: 9215 case BD_ADDR_TYPE_LE_RANDOM: 9216 return hci_connection->sm_connection.sm_le_db_index >= 0; 9217 #endif 9218 #ifdef ENABLE_CLASSIC 9219 case BD_ADDR_TYPE_SCO: 9220 case BD_ADDR_TYPE_ACL: 9221 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9222 #endif 9223 default: 9224 return false; 9225 } 9226 } 9227 9228 #ifdef ENABLE_BLE 9229 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9230 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9231 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9232 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9233 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9234 return sm_conn->sm_connection_authorization_state; 9235 } 9236 #endif 9237 9238 #ifdef ENABLE_CLASSIC 9239 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){ 9240 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9241 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9242 conn->sniff_min_interval = sniff_min_interval; 9243 conn->sniff_max_interval = sniff_max_interval; 9244 conn->sniff_attempt = sniff_attempt; 9245 conn->sniff_timeout = sniff_timeout; 9246 hci_run(); 9247 return 0; 9248 } 9249 9250 /** 9251 * @brief Exit Sniff mode 9252 * @param con_handle 9253 @ @return 0 if ok 9254 */ 9255 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9256 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9257 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9258 conn->sniff_min_interval = 0xffff; 9259 hci_run(); 9260 return 0; 9261 } 9262 9263 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){ 9264 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9265 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9266 conn->sniff_subrating_max_latency = max_latency; 9267 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9268 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9269 hci_run(); 9270 return ERROR_CODE_SUCCESS; 9271 } 9272 9273 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){ 9274 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9275 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9276 conn->qos_service_type = service_type; 9277 conn->qos_token_rate = token_rate; 9278 conn->qos_peak_bandwidth = peak_bandwidth; 9279 conn->qos_latency = latency; 9280 conn->qos_delay_variation = delay_variation; 9281 hci_run(); 9282 return ERROR_CODE_SUCCESS; 9283 } 9284 9285 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9286 hci_stack->new_page_scan_interval = page_scan_interval; 9287 hci_stack->new_page_scan_window = page_scan_window; 9288 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9289 hci_run(); 9290 } 9291 9292 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9293 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9294 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9295 hci_run(); 9296 } 9297 9298 void gap_set_page_timeout(uint16_t page_timeout){ 9299 hci_stack->page_timeout = page_timeout; 9300 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9301 hci_run(); 9302 } 9303 9304 #endif 9305 9306 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9307 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9308 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9309 if (le_device_db_index >= le_device_db_max_count()) return; 9310 uint8_t offset = le_device_db_index >> 3; 9311 uint8_t mask = 1 << (le_device_db_index & 7); 9312 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9313 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9314 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9315 // note: go back to remove entries, otherwise, a remove + add will skip the add 9316 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9317 } 9318 } 9319 9320 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9321 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9322 if (le_device_db_index >= le_device_db_max_count()) return; 9323 uint8_t offset = le_device_db_index >> 3; 9324 uint8_t mask = 1 << (le_device_db_index & 7); 9325 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9326 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9327 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9328 } 9329 } 9330 9331 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9332 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9333 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9334 } 9335 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9336 // restart le resolving list update 9337 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9338 } 9339 return ERROR_CODE_SUCCESS; 9340 } 9341 9342 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9343 hci_stack->le_privacy_mode = privacy_mode; 9344 } 9345 #endif 9346 9347 #ifdef ENABLE_BLE 9348 #ifdef ENABLE_LE_CENTRAL 9349 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9350 9351 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9352 // check if already in list 9353 btstack_linked_list_iterator_t it; 9354 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9355 while (btstack_linked_list_iterator_has_next(&it)) { 9356 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9357 if (entry->sid != advertising_sid) { 9358 continue; 9359 } 9360 if (entry->address_type != address_type) { 9361 continue; 9362 } 9363 if (memcmp(entry->address, address, 6) != 0) { 9364 continue; 9365 } 9366 // disallow if already scheduled to add 9367 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9368 return ERROR_CODE_COMMAND_DISALLOWED; 9369 } 9370 // still on controller, but scheduled to remove -> re-add 9371 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9372 return ERROR_CODE_SUCCESS; 9373 } 9374 // alloc and add to list 9375 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9376 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9377 entry->sid = advertising_sid; 9378 entry->address_type = address_type; 9379 (void)memcpy(entry->address, address, 6); 9380 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9381 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9382 return ERROR_CODE_SUCCESS; 9383 } 9384 9385 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9386 btstack_linked_list_iterator_t it; 9387 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9388 while (btstack_linked_list_iterator_has_next(&it)){ 9389 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9390 if (entry->sid != advertising_sid) { 9391 continue; 9392 } 9393 if (entry->address_type != address_type) { 9394 continue; 9395 } 9396 if (memcmp(entry->address, address, 6) != 0) { 9397 continue; 9398 } 9399 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9400 // remove from controller if already present 9401 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9402 } else { 9403 // directly remove entry from whitelist 9404 btstack_linked_list_iterator_remove(&it); 9405 btstack_memory_periodic_advertiser_list_entry_free(entry); 9406 } 9407 return ERROR_CODE_SUCCESS; 9408 } 9409 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9410 } 9411 9412 static void hci_periodic_advertiser_list_clear(void){ 9413 btstack_linked_list_iterator_t it; 9414 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9415 while (btstack_linked_list_iterator_has_next(&it)){ 9416 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9417 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9418 // remove from controller if already present 9419 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9420 continue; 9421 } 9422 // directly remove entry from whitelist 9423 btstack_linked_list_iterator_remove(&it); 9424 btstack_memory_periodic_advertiser_list_entry_free(entry); 9425 } 9426 } 9427 9428 uint8_t gap_periodic_advertiser_list_clear(void){ 9429 hci_periodic_advertiser_list_clear(); 9430 hci_run(); 9431 return ERROR_CODE_SUCCESS; 9432 } 9433 9434 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9435 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9436 if (status){ 9437 return status; 9438 } 9439 hci_run(); 9440 return ERROR_CODE_SUCCESS; 9441 } 9442 9443 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9444 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9445 if (status){ 9446 return status; 9447 } 9448 hci_run(); 9449 return ERROR_CODE_SUCCESS; 9450 } 9451 9452 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9453 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9454 // abort if already active 9455 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9456 return ERROR_CODE_COMMAND_DISALLOWED; 9457 } 9458 // store request 9459 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9460 hci_stack->le_periodic_sync_options = options; 9461 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9462 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9463 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9464 hci_stack->le_periodic_sync_skip = skip; 9465 hci_stack->le_periodic_sync_timeout = sync_timeout; 9466 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9467 9468 hci_run(); 9469 return ERROR_CODE_SUCCESS; 9470 } 9471 9472 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9473 // abort if not requested 9474 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9475 return ERROR_CODE_COMMAND_DISALLOWED; 9476 } 9477 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9478 hci_run(); 9479 return ERROR_CODE_SUCCESS; 9480 } 9481 9482 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9483 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9484 return ERROR_CODE_COMMAND_DISALLOWED; 9485 } 9486 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9487 hci_run(); 9488 return ERROR_CODE_SUCCESS; 9489 } 9490 9491 #endif 9492 #endif 9493 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9494 static hci_iso_stream_t * 9495 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9496 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9497 if (iso_stream != NULL){ 9498 iso_stream->iso_type = iso_type; 9499 iso_stream->state = state; 9500 iso_stream->group_id = group_id; 9501 iso_stream->stream_id = stream_id; 9502 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9503 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9504 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9505 } 9506 return iso_stream; 9507 } 9508 9509 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9510 btstack_linked_list_iterator_t it; 9511 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9512 while (btstack_linked_list_iterator_has_next(&it)){ 9513 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9514 if (iso_stream->cis_handle == con_handle ) { 9515 return iso_stream; 9516 } 9517 } 9518 return NULL; 9519 } 9520 9521 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9522 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9523 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9524 btstack_memory_hci_iso_stream_free(iso_stream); 9525 } 9526 9527 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9528 btstack_linked_list_iterator_t it; 9529 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9530 while (btstack_linked_list_iterator_has_next(&it)){ 9531 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9532 if ((iso_stream->group_id == group_id) && 9533 (iso_stream->iso_type == iso_type)){ 9534 btstack_linked_list_iterator_remove(&it); 9535 btstack_memory_hci_iso_stream_free(iso_stream); 9536 } 9537 } 9538 } 9539 9540 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9541 btstack_linked_list_iterator_t it; 9542 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9543 while (btstack_linked_list_iterator_has_next(&it)){ 9544 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9545 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9546 (iso_stream->group_id == group_id)){ 9547 btstack_linked_list_iterator_remove(&it); 9548 btstack_memory_hci_iso_stream_free(iso_stream); 9549 } 9550 } 9551 } 9552 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9553 btstack_linked_list_iterator_t it; 9554 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9555 while (btstack_linked_list_iterator_has_next(&it)){ 9556 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9557 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9558 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9559 } 9560 } 9561 } 9562 9563 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9564 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9565 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9566 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9567 return (sdu_len_offset + 2 + sdu_len) == size; 9568 } 9569 9570 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9571 if (hci_stack->iso_packet_handler == NULL) { 9572 return; 9573 } 9574 if (size < 4) { 9575 return; 9576 } 9577 9578 // parse header 9579 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9580 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9581 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9582 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9583 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9584 9585 // assert packet is complete 9586 if ((iso_data_len + 4u) != size){ 9587 return; 9588 } 9589 9590 if ((pb_flag & 0x01) == 0){ 9591 if (pb_flag == 0x02){ 9592 // The ISO_Data_Load field contains a header and a complete SDU. 9593 if (hci_iso_sdu_complete(packet, size)) { 9594 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9595 } 9596 } else { 9597 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9598 if (iso_stream == NULL){ 9599 return; 9600 } 9601 if (size > HCI_ISO_PAYLOAD_SIZE){ 9602 return; 9603 } 9604 memcpy(iso_stream->reassembly_buffer, packet, size); 9605 // fix pb_flag 9606 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9607 iso_stream->reassembly_pos = size; 9608 } 9609 } else { 9610 // iso_data_load contains continuation or last fragment of an SDU 9611 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9612 if (ts_flag != 0){ 9613 return; 9614 } 9615 // append fragment 9616 if (iso_stream == NULL){ 9617 return; 9618 } 9619 if (iso_stream->reassembly_pos == 0){ 9620 return; 9621 } 9622 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9623 // reset reassembly buffer 9624 iso_stream->reassembly_pos = 0; 9625 return; 9626 } 9627 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9628 iso_stream->reassembly_pos += iso_data_len; 9629 9630 // deliver if last fragment and SDU complete 9631 if (pb_flag == 0x03){ 9632 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9633 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9634 } 9635 iso_stream->reassembly_pos = 0; 9636 } 9637 } 9638 } 9639 9640 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9641 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9642 uint16_t pos = 0; 9643 event[pos++] = HCI_EVENT_META_GAP; 9644 event[pos++] = 4 + (2 * big->num_bis); 9645 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9646 event[pos++] = status; 9647 event[pos++] = big->big_handle; 9648 event[pos++] = big->num_bis; 9649 uint8_t i; 9650 for (i=0;i<big->num_bis;i++){ 9651 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9652 pos += 2; 9653 } 9654 hci_emit_event(event, pos, 0); 9655 } 9656 9657 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9658 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9659 uint16_t pos = 0; 9660 event[pos++] = HCI_EVENT_META_GAP; 9661 event[pos++] = 4 + (2 * cig->num_cis); 9662 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9663 event[pos++] = status; 9664 event[pos++] = cig->cig_id; 9665 event[pos++] = cig->num_cis; 9666 uint8_t i; 9667 for (i=0;i<cig->num_cis;i++){ 9668 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9669 pos += 2; 9670 } 9671 hci_emit_event(event, pos, 0); 9672 } 9673 9674 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9675 hci_con_handle_t acl_con_handle) { 9676 uint8_t event [10]; 9677 uint16_t pos = 0; 9678 event[pos++] = HCI_EVENT_META_GAP; 9679 event[pos++] = 8; 9680 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9681 event[pos++] = status; 9682 event[pos++] = cig_id; 9683 event[pos++] = cis_id; 9684 little_endian_store_16(event, pos, cis_con_handle); 9685 pos += 2; 9686 little_endian_store_16(event, pos, acl_con_handle); 9687 pos += 2; 9688 hci_emit_event(event, pos, 0); 9689 } 9690 9691 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9692 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9693 // cache data before finalizing struct 9694 uint8_t cig_id = iso_stream->group_id; 9695 uint8_t cis_id = iso_stream->stream_id; 9696 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9697 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9698 if (status != ERROR_CODE_SUCCESS){ 9699 hci_iso_stream_finalize(iso_stream); 9700 } 9701 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9702 } 9703 9704 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9705 uint8_t event [4]; 9706 uint16_t pos = 0; 9707 event[pos++] = HCI_EVENT_META_GAP; 9708 event[pos++] = 2; 9709 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9710 event[pos++] = big->big_handle; 9711 hci_emit_event(event, pos, 0); 9712 } 9713 9714 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9715 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9716 uint16_t pos = 0; 9717 event[pos++] = HCI_EVENT_META_GAP; 9718 event[pos++] = 4; 9719 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9720 event[pos++] = status; 9721 event[pos++] = big_sync->big_handle; 9722 event[pos++] = big_sync->num_bis; 9723 uint8_t i; 9724 for (i=0;i<big_sync->num_bis;i++){ 9725 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9726 pos += 2; 9727 } 9728 hci_emit_event(event, pos, 0); 9729 } 9730 9731 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9732 uint8_t event [4]; 9733 uint16_t pos = 0; 9734 event[pos++] = HCI_EVENT_META_GAP; 9735 event[pos++] = 2; 9736 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9737 event[pos++] = big_handle; 9738 hci_emit_event(event, pos, 0); 9739 } 9740 9741 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9742 uint8_t event[6]; 9743 uint16_t pos = 0; 9744 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9745 event[pos++] = sizeof(event) - 2; 9746 event[pos++] = big->big_handle; 9747 event[pos++] = bis_index; 9748 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9749 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9750 } 9751 9752 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9753 uint8_t event[4]; 9754 uint16_t pos = 0; 9755 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9756 event[pos++] = sizeof(event) - 2; 9757 little_endian_store_16(event, pos, cis_con_handle); 9758 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9759 } 9760 9761 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9762 btstack_linked_list_iterator_t it; 9763 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9764 while (btstack_linked_list_iterator_has_next(&it)){ 9765 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9766 if ( big->big_handle == big_handle ) { 9767 return big; 9768 } 9769 } 9770 return NULL; 9771 } 9772 9773 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9774 btstack_linked_list_iterator_t it; 9775 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9776 while (btstack_linked_list_iterator_has_next(&it)){ 9777 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9778 if ( big_sync->big_handle == big_handle ) { 9779 return big_sync; 9780 } 9781 } 9782 return NULL; 9783 } 9784 9785 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9786 hci_stack->iso_packets_to_queue = num_packets; 9787 } 9788 9789 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9790 btstack_linked_list_iterator_t it; 9791 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9792 while (btstack_linked_list_iterator_has_next(&it)){ 9793 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9794 if ( cig->cig_id == cig_id ) { 9795 return cig; 9796 } 9797 } 9798 return NULL; 9799 } 9800 9801 static void hci_iso_notify_can_send_now(void){ 9802 9803 // BIG 9804 9805 btstack_linked_list_iterator_t it; 9806 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9807 while (btstack_linked_list_iterator_has_next(&it)){ 9808 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9809 // track number completed packet timestamps 9810 if (big->num_completed_timestamp_current_valid){ 9811 big->num_completed_timestamp_current_valid = false; 9812 if (big->num_completed_timestamp_previous_valid){ 9813 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9814 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9815 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9816 big->num_completed_timestamp_previous_ms); 9817 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9818 // to catch up, skip packet on all BIS 9819 uint8_t i; 9820 for (i=0;i<big->num_bis;i++){ 9821 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9822 if (iso_stream){ 9823 iso_stream->num_packets_to_skip++; 9824 } 9825 } 9826 } 9827 } 9828 big->num_completed_timestamp_previous_valid = true; 9829 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9830 } 9831 9832 if (big->can_send_now_requested){ 9833 // check if no outgoing iso packets pending and no can send now have to be emitted 9834 uint8_t i; 9835 bool can_send = true; 9836 uint8_t num_iso_queued_minimum = 0; 9837 for (i=0;i<big->num_bis;i++){ 9838 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9839 if (iso_stream == NULL) continue; 9840 // handle case where individual ISO packet was sent too late: 9841 // for each additionally queued packet, a new one needs to get skipped 9842 if (i==0){ 9843 num_iso_queued_minimum = iso_stream->num_packets_sent; 9844 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9845 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9846 iso_stream->num_packets_to_skip += num_packets_to_skip; 9847 iso_stream->num_packets_sent -= num_packets_to_skip; 9848 } 9849 // check if we can send now 9850 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9851 can_send = false; 9852 break; 9853 } 9854 } 9855 if (can_send){ 9856 // propagate can send now to individual streams 9857 big->can_send_now_requested = false; 9858 for (i=0;i<big->num_bis;i++){ 9859 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9860 iso_stream->emit_ready_to_send = true; 9861 } 9862 } 9863 } 9864 } 9865 9866 if (hci_stack->hci_packet_buffer_reserved) return; 9867 9868 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9869 while (btstack_linked_list_iterator_has_next(&it)){ 9870 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9871 // report bis ready 9872 uint8_t i; 9873 for (i=0;i<big->num_bis;i++){ 9874 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9875 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9876 iso_stream->emit_ready_to_send = false; 9877 hci_emit_bis_can_send_now(big, i); 9878 break; 9879 } 9880 } 9881 } 9882 9883 // CIS 9884 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9885 while (btstack_linked_list_iterator_has_next(&it)) { 9886 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9887 if ((iso_stream->can_send_now_requested) && 9888 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9889 iso_stream->can_send_now_requested = false; 9890 hci_emit_cis_can_send_now(iso_stream->cis_handle); 9891 } 9892 } 9893 } 9894 9895 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9896 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9897 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9898 } 9899 if (big_params->num_bis == 0){ 9900 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9901 } 9902 if (big_params->num_bis > MAX_NR_BIS){ 9903 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9904 } 9905 9906 // reserve ISO Streams 9907 uint8_t i; 9908 uint8_t status = ERROR_CODE_SUCCESS; 9909 for (i=0;i<big_params->num_bis;i++){ 9910 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 9911 if (iso_stream == NULL) { 9912 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9913 break; 9914 } 9915 } 9916 9917 // free structs on error 9918 if (status != ERROR_CODE_SUCCESS){ 9919 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9920 return status; 9921 } 9922 9923 le_audio_big_t * big = storage; 9924 big->big_handle = big_params->big_handle; 9925 big->params = big_params; 9926 big->state = LE_AUDIO_BIG_STATE_CREATE; 9927 big->num_bis = big_params->num_bis; 9928 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9929 9930 hci_run(); 9931 9932 return ERROR_CODE_SUCCESS; 9933 } 9934 9935 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9936 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9937 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9938 } 9939 if (big_sync_params->num_bis == 0){ 9940 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9941 } 9942 if (big_sync_params->num_bis > MAX_NR_BIS){ 9943 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9944 } 9945 9946 le_audio_big_sync_t * big_sync = storage; 9947 big_sync->big_handle = big_sync_params->big_handle; 9948 big_sync->params = big_sync_params; 9949 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9950 big_sync->num_bis = big_sync_params->num_bis; 9951 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9952 9953 hci_run(); 9954 9955 return ERROR_CODE_SUCCESS; 9956 } 9957 9958 uint8_t gap_big_terminate(uint8_t big_handle){ 9959 le_audio_big_t * big = hci_big_for_handle(big_handle); 9960 if (big == NULL){ 9961 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9962 } 9963 switch (big->state){ 9964 case LE_AUDIO_BIG_STATE_CREATE: 9965 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9966 hci_emit_big_terminated(big); 9967 break; 9968 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9969 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9970 break; 9971 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9972 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9973 case LE_AUDIO_BIG_STATE_ACTIVE: 9974 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9975 hci_run(); 9976 break; 9977 default: 9978 return ERROR_CODE_COMMAND_DISALLOWED; 9979 } 9980 return ERROR_CODE_SUCCESS; 9981 } 9982 9983 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9984 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9985 if (big_sync == NULL){ 9986 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9987 } 9988 switch (big_sync->state){ 9989 case LE_AUDIO_BIG_STATE_CREATE: 9990 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9991 hci_emit_big_sync_stopped(big_handle); 9992 break; 9993 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9994 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9995 break; 9996 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9997 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9998 case LE_AUDIO_BIG_STATE_ACTIVE: 9999 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10000 hci_run(); 10001 break; 10002 default: 10003 return ERROR_CODE_COMMAND_DISALLOWED; 10004 } 10005 return ERROR_CODE_SUCCESS; 10006 } 10007 10008 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10009 le_audio_big_t * big = hci_big_for_handle(big_handle); 10010 if (big == NULL){ 10011 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10012 } 10013 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10014 return ERROR_CODE_COMMAND_DISALLOWED; 10015 } 10016 big->can_send_now_requested = true; 10017 hci_iso_notify_can_send_now(); 10018 return ERROR_CODE_SUCCESS; 10019 } 10020 10021 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10022 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10023 if (iso_stream == NULL){ 10024 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10025 } 10026 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10027 return ERROR_CODE_COMMAND_DISALLOWED; 10028 } 10029 iso_stream->can_send_now_requested = true; 10030 hci_iso_notify_can_send_now(); 10031 return ERROR_CODE_SUCCESS; 10032 } 10033 10034 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10035 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10036 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10037 } 10038 if (cig_params->num_cis == 0){ 10039 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10040 } 10041 if (cig_params->num_cis > MAX_NR_BIS){ 10042 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10043 } 10044 10045 // reserve ISO Streams 10046 uint8_t i; 10047 uint8_t status = ERROR_CODE_SUCCESS; 10048 for (i=0;i<cig_params->num_cis;i++){ 10049 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10050 if (iso_stream == NULL) { 10051 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10052 break; 10053 } 10054 } 10055 10056 // free structs on error 10057 if (status != ERROR_CODE_SUCCESS){ 10058 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10059 return status; 10060 } 10061 10062 le_audio_cig_t * cig = storage; 10063 cig->cig_id = cig_params->cig_id; 10064 cig->num_cis = cig_params->num_cis; 10065 cig->params = cig_params; 10066 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10067 for (i=0;i<cig->num_cis;i++){ 10068 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10069 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10070 cig->cis_setup_active[i] = false; 10071 cig->cis_established[i] = false; 10072 } 10073 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10074 10075 hci_run(); 10076 10077 return ERROR_CODE_SUCCESS; 10078 } 10079 10080 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10081 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10082 if (cig == NULL){ 10083 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10084 } 10085 10086 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10087 return ERROR_CODE_COMMAND_DISALLOWED; 10088 } 10089 10090 // store ACL Connection Handles 10091 uint8_t i; 10092 for (i=0;i<cig->num_cis;i++){ 10093 // check that all con handles exist and store 10094 hci_con_handle_t cis_handle = cis_con_handles[i]; 10095 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10096 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10097 } 10098 uint8_t j; 10099 bool found = false; 10100 for (j=0;j<cig->num_cis;j++){ 10101 if (cig->cis_con_handles[j] == cis_handle){ 10102 cig->acl_con_handles[j] = acl_con_handles[j]; 10103 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10104 btstack_assert(iso_stream != NULL); 10105 iso_stream->acl_handle = acl_con_handles[j]; 10106 found = true; 10107 break; 10108 } 10109 } 10110 if (!found){ 10111 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10112 } 10113 } 10114 10115 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10116 hci_run(); 10117 10118 return ERROR_CODE_SUCCESS; 10119 } 10120 10121 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10122 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10123 if (iso_stream == NULL){ 10124 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10125 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10126 } 10127 10128 // set next state and continue 10129 iso_stream->state = state; 10130 hci_run(); 10131 return ERROR_CODE_SUCCESS; 10132 } 10133 10134 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10135 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10136 } 10137 10138 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10139 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10140 } 10141 10142 10143 #endif 10144 #endif /* ENABLE_BLE */ 10145 10146 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10147 void hci_setup_test_connections_fuzz(void){ 10148 hci_connection_t * conn; 10149 10150 // default address: 66:55:44:33:00:01 10151 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10152 10153 // setup Controller info 10154 hci_stack->num_cmd_packets = 255; 10155 hci_stack->acl_packets_total_num = 255; 10156 10157 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10158 addr[5] = 0x01; 10159 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10160 conn->con_handle = addr[5]; 10161 conn->role = HCI_ROLE_SLAVE; 10162 conn->state = RECEIVED_CONNECTION_REQUEST; 10163 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10164 10165 // setup incoming Classic SCO connection with con handle 0x0002 10166 addr[5] = 0x02; 10167 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10168 conn->con_handle = addr[5]; 10169 conn->role = HCI_ROLE_SLAVE; 10170 conn->state = RECEIVED_CONNECTION_REQUEST; 10171 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10172 10173 // setup ready Classic ACL connection with con handle 0x0003 10174 addr[5] = 0x03; 10175 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10176 conn->con_handle = addr[5]; 10177 conn->role = HCI_ROLE_SLAVE; 10178 conn->state = OPEN; 10179 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10180 10181 // setup ready Classic SCO connection with con handle 0x0004 10182 addr[5] = 0x04; 10183 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10184 conn->con_handle = addr[5]; 10185 conn->role = HCI_ROLE_SLAVE; 10186 conn->state = OPEN; 10187 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10188 10189 // setup ready LE ACL connection with con handle 0x005 and public address 10190 addr[5] = 0x05; 10191 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 10192 conn->con_handle = addr[5]; 10193 conn->role = HCI_ROLE_SLAVE; 10194 conn->state = OPEN; 10195 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10196 conn->sm_connection.sm_connection_encrypted = 1; 10197 } 10198 10199 void hci_free_connections_fuzz(void){ 10200 btstack_linked_list_iterator_t it; 10201 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10202 while (btstack_linked_list_iterator_has_next(&it)){ 10203 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10204 btstack_linked_list_iterator_remove(&it); 10205 btstack_memory_hci_connection_free(con); 10206 } 10207 } 10208 void hci_simulate_working_fuzz(void){ 10209 hci_stack->le_scanning_param_update = false; 10210 hci_init_done(); 10211 hci_stack->num_cmd_packets = 255; 10212 } 10213 #endif 10214