1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 97 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 98 #endif 99 100 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 101 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 102 #endif 103 104 #define HCI_CONNECTION_TIMEOUT_MS 10000 105 106 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 107 #define HCI_RESET_RESEND_TIMEOUT_MS 200 108 #endif 109 110 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 111 #ifndef GAP_INQUIRY_MAX_NAME_LEN 112 #define GAP_INQUIRY_MAX_NAME_LEN 32 113 #endif 114 115 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 116 #define GAP_INQUIRY_DURATION_MIN 0x01 117 #define GAP_INQUIRY_DURATION_MAX 0x30 118 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 119 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 120 #define GAP_INQUIRY_STATE_IDLE 0x00 121 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 122 #define GAP_INQUIRY_STATE_ACTIVE 0x81 123 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 124 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 125 #define GAP_INQUIRY_STATE_PERIODIC 0x84 126 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 127 128 // GAP Remote Name Request 129 #define GAP_REMOTE_NAME_STATE_IDLE 0 130 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 131 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 132 133 // GAP Pairing 134 #define GAP_PAIRING_STATE_IDLE 0 135 #define GAP_PAIRING_STATE_SEND_PIN 1 136 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 137 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 138 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 139 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 140 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 141 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 142 143 // 144 // compact storage of relevant supported HCI Commands. 145 // X-Macro below provides enumeration and mapping table into the supported 146 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 147 // 148 149 // format: command name, byte offset, bit nr in 64-byte supported commands 150 // currently stored in 32-bit variable 151 #define SUPPORTED_HCI_COMMANDS \ 152 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 153 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 154 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 155 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 156 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 157 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 158 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 159 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 160 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 161 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 162 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 163 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 164 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 165 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 166 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 167 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 168 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 169 170 // enumerate supported commands 171 #define X(name, offset, bit) name, 172 enum { 173 SUPPORTED_HCI_COMMANDS 174 SUPPORTED_HCI_COMMANDS_COUNT 175 }; 176 #undef X 177 178 // prototypes 179 #ifdef ENABLE_CLASSIC 180 static void hci_update_scan_enable(void); 181 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 182 static int hci_local_ssp_activated(void); 183 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 184 static bool hci_ssp_supported(hci_connection_t * connection); 185 static void hci_notify_if_sco_can_send_now(void); 186 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 187 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 188 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 189 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 190 static void hci_connection_timestamp(hci_connection_t *connection); 191 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 192 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 193 #endif 194 195 static int hci_power_control_on(void); 196 static void hci_power_control_off(void); 197 static void hci_state_reset(void); 198 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 199 static void hci_emit_transport_packet_sent(void); 200 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 201 static void hci_emit_nr_connections_changed(void); 202 static void hci_emit_hci_open_failed(void); 203 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 204 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 205 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 206 static void hci_run(void); 207 static int hci_is_le_connection(hci_connection_t * connection); 208 209 #ifdef ENABLE_CLASSIC 210 static int hci_have_usb_transport(void); 211 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 212 #endif 213 214 #ifdef ENABLE_BLE 215 static void hci_whitelist_free(void); 216 #ifdef ENABLE_LE_CENTRAL 217 // called from test/ble_client/advertising_data_parser.c 218 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 219 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 220 static hci_connection_t * gap_get_outgoing_connection(void); 221 static void hci_le_scan_stop(void); 222 static bool hci_run_general_gap_le(void); 223 #endif 224 #ifdef ENABLE_LE_PERIPHERAL 225 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 226 static void hci_periodic_advertiser_list_free(void); 227 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 228 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 229 #endif /* ENABLE_LE_PERIPHERAL */ 230 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 231 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id); 232 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 233 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 234 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 235 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 236 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 237 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 238 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 239 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 240 static void hci_iso_notify_can_send_now(void); 241 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 242 static void hci_emit_big_terminated(const le_audio_big_t * big); 243 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 244 static void hci_emit_big_sync_stopped(uint8_t big_handle); 245 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 246 static void hci_emit_cis_created(const le_audio_cig_t * cig, uint8_t cis_index, uint8_t status); 247 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 248 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 249 #endif /* ENABLE_BLE */ 250 251 // the STACK is here 252 #ifndef HAVE_MALLOC 253 static hci_stack_t hci_stack_static; 254 #endif 255 static hci_stack_t * hci_stack = NULL; 256 257 #ifdef ENABLE_CLASSIC 258 // default name 259 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 260 261 // test helper 262 static uint8_t disable_l2cap_timeouts = 0; 263 #endif 264 265 // reset connection state on create and on reconnect 266 // don't overwrite addr, con handle, role 267 static void hci_connection_init(hci_connection_t * conn){ 268 conn->authentication_flags = AUTH_FLAG_NONE; 269 conn->bonding_flags = 0; 270 conn->requested_security_level = LEVEL_0; 271 #ifdef ENABLE_CLASSIC 272 conn->request_role = HCI_ROLE_INVALID; 273 conn->sniff_subrating_max_latency = 0xffff; 274 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 275 conn->link_key_type = INVALID_LINK_KEY; 276 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 277 btstack_run_loop_set_timer_context(&conn->timeout, conn); 278 hci_connection_timestamp(conn); 279 #endif 280 conn->acl_recombination_length = 0; 281 conn->acl_recombination_pos = 0; 282 conn->num_packets_sent = 0; 283 284 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 285 #ifdef ENABLE_BLE 286 conn->le_phy_update_all_phys = 0xff; 287 #endif 288 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 289 conn->le_max_tx_octets = 27; 290 #endif 291 #ifdef ENABLE_CLASSIC_PAIRING_OOB 292 conn->classic_oob_c_192 = NULL; 293 conn->classic_oob_r_192 = NULL; 294 conn->classic_oob_c_256 = NULL; 295 conn->classic_oob_r_256 = NULL; 296 #endif 297 } 298 299 /** 300 * create connection for given address 301 * 302 * @return connection OR NULL, if no memory left 303 */ 304 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 305 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 306 307 hci_connection_t * conn = btstack_memory_hci_connection_get(); 308 if (!conn) return NULL; 309 hci_connection_init(conn); 310 311 bd_addr_copy(conn->address, addr); 312 conn->address_type = addr_type; 313 conn->con_handle = HCI_CON_HANDLE_INVALID; 314 conn->role = HCI_ROLE_INVALID; 315 316 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 317 318 return conn; 319 } 320 321 322 /** 323 * get le connection parameter range 324 * 325 * @return le connection parameter range struct 326 */ 327 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 328 *range = hci_stack->le_connection_parameter_range; 329 } 330 331 /** 332 * set le connection parameter range 333 * 334 */ 335 336 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 337 hci_stack->le_connection_parameter_range = *range; 338 } 339 340 /** 341 * @brief Test if connection parameters are inside in existing rage 342 * @param conn_interval_min (unit: 1.25ms) 343 * @param conn_interval_max (unit: 1.25ms) 344 * @param conn_latency 345 * @param supervision_timeout (unit: 10ms) 346 * @return 1 if included 347 */ 348 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){ 349 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 350 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 351 352 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 353 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 354 355 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 356 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 357 358 return 1; 359 } 360 361 /** 362 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 363 * @note: default: 1 364 * @param max_peripheral_connections 365 */ 366 #ifdef ENABLE_LE_PERIPHERAL 367 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 368 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 369 } 370 #endif 371 372 /** 373 * get hci connections iterator 374 * 375 * @return hci connections iterator 376 */ 377 378 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 379 btstack_linked_list_iterator_init(it, &hci_stack->connections); 380 } 381 382 /** 383 * get connection for a given handle 384 * 385 * @return connection OR NULL, if not found 386 */ 387 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 388 btstack_linked_list_iterator_t it; 389 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 390 while (btstack_linked_list_iterator_has_next(&it)){ 391 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 392 if ( item->con_handle == con_handle ) { 393 return item; 394 } 395 } 396 return NULL; 397 } 398 399 /** 400 * get connection for given address 401 * 402 * @return connection OR NULL, if not found 403 */ 404 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 405 btstack_linked_list_iterator_t it; 406 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 407 while (btstack_linked_list_iterator_has_next(&it)){ 408 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 409 if (connection->address_type != addr_type) continue; 410 if (memcmp(addr, connection->address, 6) != 0) continue; 411 return connection; 412 } 413 return NULL; 414 } 415 416 #ifdef ENABLE_CLASSIC 417 418 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 419 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 420 } 421 422 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 423 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 424 } 425 426 #ifdef ENABLE_SCO_OVER_HCI 427 static int hci_number_sco_connections(void){ 428 int connections = 0; 429 btstack_linked_list_iterator_t it; 430 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 431 while (btstack_linked_list_iterator_has_next(&it)){ 432 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 433 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 434 connections++; 435 } 436 return connections; 437 } 438 #endif 439 440 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 441 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 442 #ifdef HAVE_EMBEDDED_TICK 443 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 444 // connections might be timed out 445 hci_emit_l2cap_check_timeout(connection); 446 } 447 #else 448 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 449 // connections might be timed out 450 hci_emit_l2cap_check_timeout(connection); 451 } 452 #endif 453 } 454 455 static void hci_connection_timestamp(hci_connection_t *connection){ 456 #ifdef HAVE_EMBEDDED_TICK 457 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 458 #else 459 connection->timestamp = btstack_run_loop_get_time_ms(); 460 #endif 461 } 462 463 /** 464 * add authentication flags and reset timer 465 * @note: assumes classic connection 466 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 467 */ 468 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 469 bd_addr_t addr; 470 reverse_bd_addr(bd_addr, addr); 471 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 472 if (conn) { 473 connectionSetAuthenticationFlags(conn, flags); 474 hci_connection_timestamp(conn); 475 } 476 } 477 478 static bool hci_pairing_active(hci_connection_t * hci_connection){ 479 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 480 } 481 482 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 483 if (hci_pairing_active(hci_connection)) return; 484 if (ssp){ 485 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 486 } else { 487 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 488 } 489 // if we are initiator, we have sent an HCI Authenticate Request 490 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 491 492 // if we are responder, use minimal service security level as required level 493 if (!initiator){ 494 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); 495 } 496 497 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 498 499 uint8_t event[12]; 500 event[0] = GAP_EVENT_PAIRING_STARTED; 501 event[1] = 10; 502 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 503 reverse_bd_addr(hci_connection->address, &event[4]); 504 event[10] = (uint8_t) ssp; 505 event[11] = (uint8_t) initiator; 506 hci_emit_event(event, sizeof(event), 1); 507 } 508 509 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 510 hci_connection->requested_security_level = LEVEL_0; 511 if (!hci_pairing_active(hci_connection)) return; 512 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 513 #ifdef ENABLE_CLASSIC_PAIRING_OOB 514 hci_connection->classic_oob_c_192 = NULL; 515 hci_connection->classic_oob_r_192 = NULL; 516 hci_connection->classic_oob_c_256 = NULL; 517 hci_connection->classic_oob_r_256 = NULL; 518 #endif 519 log_info("pairing complete, status %02x", status); 520 521 uint8_t event[11]; 522 event[0] = GAP_EVENT_PAIRING_COMPLETE; 523 event[1] = 9; 524 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 525 reverse_bd_addr(hci_connection->address, &event[4]); 526 event[10] = status; 527 hci_emit_event(event, sizeof(event), 1); 528 529 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 530 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 531 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 532 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 533 hci_connection->bonding_status = status; 534 } 535 } 536 537 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 538 hci_connection_t * conn = hci_connection_for_handle(handle); 539 if (!conn) return false; 540 return hci_pairing_active(conn); 541 } 542 543 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 544 if (!hci_stack->link_key_db) return; 545 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 546 hci_stack->link_key_db->delete_link_key(addr); 547 } 548 549 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 550 if (!hci_stack->link_key_db) return; 551 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 552 hci_stack->link_key_db->put_link_key(addr, link_key, type); 553 } 554 555 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 556 if (!hci_stack->link_key_db) return false; 557 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 558 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 559 return result; 560 } 561 562 void gap_delete_all_link_keys(void){ 563 bd_addr_t addr; 564 link_key_t link_key; 565 link_key_type_t type; 566 btstack_link_key_iterator_t it; 567 int ok = gap_link_key_iterator_init(&it); 568 if (!ok) { 569 log_error("could not initialize iterator"); 570 return; 571 } 572 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 573 gap_drop_link_key_for_bd_addr(addr); 574 } 575 gap_link_key_iterator_done(&it); 576 } 577 578 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 579 if (!hci_stack->link_key_db) return 0; 580 if (!hci_stack->link_key_db->iterator_init) return 0; 581 return hci_stack->link_key_db->iterator_init(it); 582 } 583 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){ 584 if (!hci_stack->link_key_db) return 0; 585 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 586 } 587 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 588 if (!hci_stack->link_key_db) return; 589 hci_stack->link_key_db->iterator_done(it); 590 } 591 #endif 592 593 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 594 switch (address_type){ 595 case BD_ADDR_TYPE_LE_PUBLIC: 596 case BD_ADDR_TYPE_LE_RANDOM: 597 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 598 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 599 return true; 600 default: 601 return false; 602 } 603 } 604 605 static int hci_is_le_connection(hci_connection_t * connection){ 606 return hci_is_le_connection_type(connection->address_type); 607 } 608 609 /** 610 * count connections 611 */ 612 static int nr_hci_connections(void){ 613 int count = 0; 614 btstack_linked_item_t *it; 615 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 616 count++; 617 } 618 return count; 619 } 620 621 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 622 623 unsigned int num_packets_sent_classic = 0; 624 unsigned int num_packets_sent_le = 0; 625 626 btstack_linked_item_t *it; 627 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 628 hci_connection_t * connection = (hci_connection_t *) it; 629 if (hci_is_le_connection(connection)){ 630 num_packets_sent_le += connection->num_packets_sent; 631 } 632 if (connection->address_type == BD_ADDR_TYPE_ACL){ 633 num_packets_sent_classic += connection->num_packets_sent; 634 } 635 } 636 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 637 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 638 int free_slots_le = 0; 639 640 if (free_slots_classic < 0){ 641 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); 642 return 0; 643 } 644 645 if (hci_stack->le_acl_packets_total_num){ 646 // if we have LE slots, they are used 647 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 648 if (free_slots_le < 0){ 649 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); 650 return 0; 651 } 652 } else { 653 // otherwise, classic slots are used for LE, too 654 free_slots_classic -= num_packets_sent_le; 655 if (free_slots_classic < 0){ 656 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); 657 return 0; 658 } 659 } 660 661 switch (address_type){ 662 case BD_ADDR_TYPE_UNKNOWN: 663 log_error("hci_number_free_acl_slots: unknown address type"); 664 return 0; 665 666 case BD_ADDR_TYPE_ACL: 667 return (uint16_t) free_slots_classic; 668 669 default: 670 if (hci_stack->le_acl_packets_total_num > 0){ 671 return (uint16_t) free_slots_le; 672 } 673 return (uint16_t) free_slots_classic; 674 } 675 } 676 677 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 678 // get connection type 679 hci_connection_t * connection = hci_connection_for_handle(con_handle); 680 if (!connection){ 681 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 682 return 0; 683 } 684 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 685 } 686 687 #ifdef ENABLE_CLASSIC 688 static int hci_number_free_sco_slots(void){ 689 unsigned int num_sco_packets_sent = 0; 690 btstack_linked_item_t *it; 691 if (hci_stack->synchronous_flow_control_enabled){ 692 // explicit flow control 693 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 694 hci_connection_t * connection = (hci_connection_t *) it; 695 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 696 num_sco_packets_sent += connection->num_packets_sent; 697 } 698 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 699 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 700 return 0; 701 } 702 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 703 } else { 704 // implicit flow control -- TODO 705 int num_ready = 0; 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 if (connection->sco_tx_ready == 0) continue; 710 num_ready++; 711 } 712 return num_ready; 713 } 714 } 715 #endif 716 717 // only used to send HCI Host Number Completed Packets 718 static int hci_can_send_comand_packet_transport(void){ 719 if (hci_stack->hci_packet_buffer_reserved) return 0; 720 721 // check for async hci transport implementations 722 if (hci_stack->hci_transport->can_send_packet_now){ 723 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 724 return 0; 725 } 726 } 727 return 1; 728 } 729 730 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 731 bool hci_can_send_command_packet_now(void){ 732 if (hci_can_send_comand_packet_transport() == 0) return false; 733 return hci_stack->num_cmd_packets > 0u; 734 } 735 736 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 737 // check for async hci transport implementations 738 if (!hci_stack->hci_transport->can_send_packet_now) return true; 739 return hci_stack->hci_transport->can_send_packet_now(packet_type); 740 } 741 742 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 743 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 744 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 745 } 746 747 bool hci_can_send_acl_le_packet_now(void){ 748 if (hci_stack->hci_packet_buffer_reserved) return false; 749 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 750 } 751 752 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 753 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 754 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 755 } 756 757 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 758 if (hci_stack->hci_packet_buffer_reserved) return false; 759 return hci_can_send_prepared_acl_packet_now(con_handle); 760 } 761 762 #ifdef ENABLE_CLASSIC 763 bool hci_can_send_acl_classic_packet_now(void){ 764 if (hci_stack->hci_packet_buffer_reserved) return false; 765 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 766 } 767 768 bool hci_can_send_prepared_sco_packet_now(void){ 769 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 770 if (hci_have_usb_transport()){ 771 return hci_stack->sco_can_send_now; 772 } else { 773 return hci_number_free_sco_slots() > 0; 774 } 775 } 776 777 bool hci_can_send_sco_packet_now(void){ 778 if (hci_stack->hci_packet_buffer_reserved) return false; 779 return hci_can_send_prepared_sco_packet_now(); 780 } 781 782 void hci_request_sco_can_send_now_event(void){ 783 hci_stack->sco_waiting_for_can_send_now = 1; 784 hci_notify_if_sco_can_send_now(); 785 } 786 #endif 787 788 // used for internal checks in l2cap.c 789 bool hci_is_packet_buffer_reserved(void){ 790 return hci_stack->hci_packet_buffer_reserved; 791 } 792 793 // reserves outgoing packet buffer. 794 // @return 1 if successful 795 bool hci_reserve_packet_buffer(void){ 796 if (hci_stack->hci_packet_buffer_reserved) { 797 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 798 return false; 799 } 800 hci_stack->hci_packet_buffer_reserved = true; 801 return true; 802 } 803 804 void hci_release_packet_buffer(void){ 805 hci_stack->hci_packet_buffer_reserved = false; 806 } 807 808 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 809 static int hci_transport_synchronous(void){ 810 return hci_stack->hci_transport->can_send_packet_now == NULL; 811 } 812 813 // used for debugging 814 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 815 static void hci_controller_dump_packets(void){ 816 // format: "{handle:04x}:{count:02d} " 817 char summaries[3][7 * 8 + 1]; 818 uint16_t totals[3]; 819 uint8_t index; 820 for (index = 0 ; index < 3 ; index++){ 821 summaries[index][0] = 0; 822 totals[index] = 0; 823 } 824 btstack_linked_item_t *it; 825 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 826 hci_connection_t * connection = (hci_connection_t *) it; 827 switch (connection->address_type){ 828 case BD_ADDR_TYPE_ACL: 829 index = 0; 830 break; 831 case BD_ADDR_TYPE_SCO: 832 index = 2; 833 break; 834 default: 835 index = 1; 836 break; 837 } 838 totals[index] += connection->num_packets_sent; 839 char item_text[10]; 840 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 841 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 842 } 843 for (index = 0 ; index < 3 ; index++){ 844 if (summaries[index][0] == 0){ 845 summaries[index][0] = '-'; 846 summaries[index][1] = 0; 847 } 848 } 849 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]); 850 } 851 #endif 852 853 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 854 855 // 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); 856 857 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 858 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 859 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 860 max_acl_data_packet_length = hci_stack->le_data_packets_length; 861 } 862 863 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 864 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 865 max_acl_data_packet_length = connection->le_max_tx_octets; 866 } 867 #endif 868 869 log_debug("hci_send_acl_packet_fragments entered"); 870 871 uint8_t status = ERROR_CODE_SUCCESS; 872 // multiple packets could be send on a synchronous HCI transport 873 while (true){ 874 875 log_debug("hci_send_acl_packet_fragments loop entered"); 876 877 // get current data 878 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 879 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 880 bool more_fragments = false; 881 882 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 883 if (current_acl_data_packet_length > max_acl_data_packet_length){ 884 more_fragments = true; 885 current_acl_data_packet_length = max_acl_data_packet_length; 886 } 887 888 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 889 if (acl_header_pos > 0u){ 890 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 891 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 892 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 893 } 894 895 // update header len 896 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 897 898 // count packet 899 connection->num_packets_sent++; 900 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 901 902 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 903 if (more_fragments){ 904 // update start of next fragment to send 905 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 906 } else { 907 // done 908 hci_stack->acl_fragmentation_pos = 0; 909 hci_stack->acl_fragmentation_total_size = 0; 910 } 911 912 // send packet 913 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 914 const int size = current_acl_data_packet_length + 4; 915 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 916 hci_stack->acl_fragmentation_tx_active = 1; 917 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 918 if (err != 0){ 919 // no error from HCI Transport expected 920 status = ERROR_CODE_HARDWARE_FAILURE; 921 } 922 923 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 924 hci_controller_dump_packets(); 925 #endif 926 927 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 928 929 // done yet? 930 if (!more_fragments) break; 931 932 // can send more? 933 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 934 } 935 936 log_debug("hci_send_acl_packet_fragments loop over"); 937 938 // release buffer now for synchronous transport 939 if (hci_transport_synchronous()){ 940 hci_stack->acl_fragmentation_tx_active = 0; 941 hci_release_packet_buffer(); 942 hci_emit_transport_packet_sent(); 943 } 944 945 return status; 946 } 947 948 // pre: caller has reserved the packet buffer 949 uint8_t hci_send_acl_packet_buffer(int size){ 950 btstack_assert(hci_stack->hci_packet_buffer_reserved); 951 952 uint8_t * packet = hci_stack->hci_packet_buffer; 953 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 954 955 // check for free places on Bluetooth module 956 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 957 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 958 hci_release_packet_buffer(); 959 hci_emit_transport_packet_sent(); 960 return BTSTACK_ACL_BUFFERS_FULL; 961 } 962 963 hci_connection_t *connection = hci_connection_for_handle( con_handle); 964 if (!connection) { 965 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 966 hci_release_packet_buffer(); 967 hci_emit_transport_packet_sent(); 968 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 969 } 970 971 #ifdef ENABLE_CLASSIC 972 hci_connection_timestamp(connection); 973 #endif 974 975 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 976 977 // setup data 978 hci_stack->acl_fragmentation_total_size = size; 979 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 980 981 return hci_send_acl_packet_fragments(connection); 982 } 983 984 #ifdef ENABLE_CLASSIC 985 // pre: caller has reserved the packet buffer 986 uint8_t hci_send_sco_packet_buffer(int size){ 987 btstack_assert(hci_stack->hci_packet_buffer_reserved); 988 989 uint8_t * packet = hci_stack->hci_packet_buffer; 990 991 // skip checks in loopback mode 992 if (!hci_stack->loopback_mode){ 993 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 994 995 // check for free places on Bluetooth module 996 if (!hci_can_send_prepared_sco_packet_now()) { 997 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 998 hci_release_packet_buffer(); 999 hci_emit_transport_packet_sent(); 1000 return BTSTACK_ACL_BUFFERS_FULL; 1001 } 1002 1003 // track send packet in connection struct 1004 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1005 if (!connection) { 1006 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1007 hci_release_packet_buffer(); 1008 hci_emit_transport_packet_sent(); 1009 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1010 } 1011 1012 if (hci_have_usb_transport()){ 1013 // token used 1014 hci_stack->sco_can_send_now = false; 1015 } else { 1016 if (hci_stack->synchronous_flow_control_enabled){ 1017 connection->num_packets_sent++; 1018 } else { 1019 connection->sco_tx_ready--; 1020 } 1021 } 1022 } 1023 1024 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1025 1026 #ifdef HAVE_SCO_TRANSPORT 1027 hci_stack->sco_transport->send_packet(packet, size); 1028 hci_release_packet_buffer(); 1029 hci_emit_transport_packet_sent(); 1030 1031 return 0; 1032 #else 1033 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1034 if (hci_transport_synchronous()){ 1035 hci_release_packet_buffer(); 1036 hci_emit_transport_packet_sent(); 1037 } 1038 1039 if (err != 0){ 1040 return ERROR_CODE_HARDWARE_FAILURE; 1041 } 1042 return ERROR_CODE_SUCCESS; 1043 #endif 1044 } 1045 #endif 1046 1047 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1048 static uint8_t hci_send_iso_packet_fragments(void){ 1049 1050 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1051 uint8_t status = ERROR_CODE_SUCCESS; 1052 // multiple packets could be send on a synchronous HCI transport 1053 while (true){ 1054 1055 // get current data 1056 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1057 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1058 bool more_fragments = false; 1059 1060 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1061 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1062 more_fragments = true; 1063 current_iso_data_packet_length = max_iso_data_packet_length; 1064 } 1065 1066 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1067 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1068 uint8_t pb_flags; 1069 if (iso_header_pos == 0u){ 1070 // first fragment, keep TS field 1071 pb_flags = more_fragments ? 0x00 : 0x02; 1072 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1073 } else { 1074 // later fragment, drop TS field 1075 pb_flags = more_fragments ? 0x01 : 0x03; 1076 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1077 } 1078 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1079 1080 // update header len 1081 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1082 1083 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1084 if (more_fragments){ 1085 // update start of next fragment to send 1086 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1087 } else { 1088 // done 1089 hci_stack->iso_fragmentation_pos = 0; 1090 hci_stack->iso_fragmentation_total_size = 0; 1091 } 1092 1093 // send packet 1094 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1095 const int size = current_iso_data_packet_length + 4; 1096 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1097 hci_stack->iso_fragmentation_tx_active = true; 1098 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1099 if (err != 0){ 1100 // no error from HCI Transport expected 1101 status = ERROR_CODE_HARDWARE_FAILURE; 1102 } 1103 1104 // done yet? 1105 if (!more_fragments) break; 1106 1107 // can send more? 1108 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1109 } 1110 1111 // release buffer now for synchronous transport 1112 if (hci_transport_synchronous()){ 1113 hci_stack->iso_fragmentation_tx_active = false; 1114 hci_release_packet_buffer(); 1115 hci_emit_transport_packet_sent(); 1116 } 1117 1118 return status; 1119 } 1120 1121 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1122 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1123 1124 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1125 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1126 if (iso_stream == NULL){ 1127 hci_release_packet_buffer(); 1128 hci_iso_notify_can_send_now(); 1129 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1130 } 1131 1132 // TODO: check for space on controller 1133 1134 // skip iso packets if needed 1135 if (iso_stream->num_packets_to_skip > 0){ 1136 iso_stream->num_packets_to_skip--; 1137 // pretend it was processed and trigger next one 1138 hci_release_packet_buffer(); 1139 hci_iso_notify_can_send_now(); 1140 return ERROR_CODE_SUCCESS; 1141 } 1142 1143 // track outgoing packet sent 1144 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1145 iso_stream->num_packets_sent++; 1146 1147 // setup data 1148 hci_stack->iso_fragmentation_total_size = size; 1149 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1150 1151 return hci_send_iso_packet_fragments(); 1152 } 1153 #endif 1154 1155 static void acl_handler(uint8_t *packet, uint16_t size){ 1156 1157 // get info 1158 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1159 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1160 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1161 uint16_t acl_length = READ_ACL_LENGTH(packet); 1162 1163 // ignore non-registered handle 1164 if (!conn){ 1165 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1166 return; 1167 } 1168 1169 // assert packet is complete 1170 if ((acl_length + 4u) != size){ 1171 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1172 return; 1173 } 1174 1175 #ifdef ENABLE_CLASSIC 1176 // update idle timestamp 1177 hci_connection_timestamp(conn); 1178 #endif 1179 1180 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1181 hci_stack->host_completed_packets = 1; 1182 conn->num_packets_completed++; 1183 #endif 1184 1185 // handle different packet types 1186 switch (acl_flags & 0x03u) { 1187 1188 case 0x01: // continuation fragment 1189 1190 // sanity checks 1191 if (conn->acl_recombination_pos == 0u) { 1192 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1193 return; 1194 } 1195 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1196 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1197 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1198 conn->acl_recombination_pos = 0; 1199 return; 1200 } 1201 1202 // append fragment payload (header already stored) 1203 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1204 &packet[4], acl_length); 1205 conn->acl_recombination_pos += acl_length; 1206 1207 // forward complete L2CAP packet if complete. 1208 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1209 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1210 // reset recombination buffer 1211 conn->acl_recombination_length = 0; 1212 conn->acl_recombination_pos = 0; 1213 } 1214 break; 1215 1216 case 0x02: { // first fragment 1217 1218 // sanity check 1219 if (conn->acl_recombination_pos) { 1220 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1221 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1222 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1223 } 1224 conn->acl_recombination_pos = 0; 1225 } 1226 1227 // peek into L2CAP packet! 1228 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1229 1230 // compare fragment size to L2CAP packet size 1231 if (acl_length >= (l2cap_length + 4u)){ 1232 // forward fragment as L2CAP packet 1233 hci_emit_acl_packet(packet, acl_length + 4u); 1234 } else { 1235 1236 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1237 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1238 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1239 return; 1240 } 1241 1242 // store first fragment and tweak acl length for complete package 1243 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1244 packet, acl_length + 4u); 1245 conn->acl_recombination_pos = acl_length + 4u; 1246 conn->acl_recombination_length = l2cap_length; 1247 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1248 } 1249 break; 1250 1251 } 1252 default: 1253 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1254 return; 1255 } 1256 1257 // execute main loop 1258 hci_run(); 1259 } 1260 1261 static void hci_connection_stop_timer(hci_connection_t * conn){ 1262 btstack_run_loop_remove_timer(&conn->timeout); 1263 #ifdef ENABLE_CLASSIC 1264 btstack_run_loop_remove_timer(&conn->timeout_sco); 1265 #endif 1266 } 1267 1268 static void hci_shutdown_connection(hci_connection_t *conn){ 1269 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1270 1271 #ifdef ENABLE_CLASSIC 1272 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1273 bd_addr_type_t addr_type = conn->address_type; 1274 #endif 1275 #ifdef HAVE_SCO_TRANSPORT 1276 hci_con_handle_t con_handle = conn->con_handle; 1277 #endif 1278 #endif 1279 1280 hci_connection_stop_timer(conn); 1281 1282 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1283 btstack_memory_hci_connection_free( conn ); 1284 1285 // now it's gone 1286 hci_emit_nr_connections_changed(); 1287 1288 #ifdef ENABLE_CLASSIC 1289 #ifdef ENABLE_SCO_OVER_HCI 1290 // update SCO 1291 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1292 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1293 } 1294 #endif 1295 #ifdef HAVE_SCO_TRANSPORT 1296 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1297 hci_stack->sco_transport->close(con_handle); 1298 } 1299 #endif 1300 #endif 1301 } 1302 1303 #ifdef ENABLE_CLASSIC 1304 1305 static const uint16_t packet_type_sizes[] = { 1306 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1307 HCI_ACL_DH1_SIZE, 0, 0, 0, 1308 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1309 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1310 }; 1311 static const uint8_t packet_type_feature_requirement_bit[] = { 1312 0, // 3 slot packets 1313 1, // 5 slot packets 1314 25, // EDR 2 mpbs 1315 26, // EDR 3 mbps 1316 39, // 3 slot EDR packts 1317 40, // 5 slot EDR packet 1318 }; 1319 static const uint16_t packet_type_feature_packet_mask[] = { 1320 0x0f00, // 3 slot packets 1321 0xf000, // 5 slot packets 1322 0x1102, // EDR 2 mpbs 1323 0x2204, // EDR 3 mbps 1324 0x0300, // 3 slot EDR packts 1325 0x3000, // 5 slot EDR packet 1326 }; 1327 1328 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1329 // enable packet types based on size 1330 uint16_t packet_types = 0; 1331 unsigned int i; 1332 for (i=0;i<16;i++){ 1333 if (packet_type_sizes[i] == 0) continue; 1334 if (packet_type_sizes[i] <= buffer_size){ 1335 packet_types |= 1 << i; 1336 } 1337 } 1338 // disable packet types due to missing local supported features 1339 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1340 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1341 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1342 if (feature_set) continue; 1343 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1344 packet_types &= ~packet_type_feature_packet_mask[i]; 1345 } 1346 // flip bits for "may not be used" 1347 packet_types ^= 0x3306; 1348 return packet_types; 1349 } 1350 1351 uint16_t hci_usable_acl_packet_types(void){ 1352 return hci_stack->packet_types; 1353 } 1354 #endif 1355 1356 uint8_t* hci_get_outgoing_packet_buffer(void){ 1357 // hci packet buffer is >= acl data packet length 1358 return hci_stack->hci_packet_buffer; 1359 } 1360 1361 uint16_t hci_max_acl_data_packet_length(void){ 1362 return hci_stack->acl_data_packet_length; 1363 } 1364 1365 #ifdef ENABLE_CLASSIC 1366 bool hci_extended_sco_link_supported(void){ 1367 // No. 31, byte 3, bit 7 1368 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1369 } 1370 #endif 1371 1372 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1373 // No. 54, byte 6, bit 6 1374 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1375 } 1376 1377 #ifdef ENABLE_CLASSIC 1378 static int gap_ssp_supported(void){ 1379 // No. 51, byte 6, bit 3 1380 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1381 } 1382 #endif 1383 1384 static int hci_classic_supported(void){ 1385 #ifdef ENABLE_CLASSIC 1386 // No. 37, byte 4, bit 5, = No BR/EDR Support 1387 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1388 #else 1389 return 0; 1390 #endif 1391 } 1392 1393 static int hci_le_supported(void){ 1394 #ifdef ENABLE_BLE 1395 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1396 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1397 #else 1398 return 0; 1399 #endif 1400 } 1401 1402 static bool hci_command_supported(uint8_t command_index){ 1403 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1404 } 1405 1406 #ifdef ENABLE_BLE 1407 1408 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1409 static bool hci_extended_advertising_supported(void){ 1410 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1411 } 1412 #endif 1413 1414 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1415 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1416 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1417 } else { 1418 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1419 } 1420 } 1421 1422 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1423 *addr_type = hci_stack->le_own_addr_type; 1424 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1425 } 1426 1427 #ifdef ENABLE_LE_PERIPHERAL 1428 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1429 *addr_type = hci_stack->le_advertisements_own_addr_type; 1430 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1431 }; 1432 #endif 1433 1434 #ifdef ENABLE_LE_CENTRAL 1435 1436 /** 1437 * @brief Get own addr type and address used for LE connections (Central) 1438 */ 1439 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1440 *addr_type = hci_stack->le_connection_own_addr_type; 1441 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1442 } 1443 1444 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1445 1446 uint16_t offset = 3; 1447 uint8_t num_reports = packet[offset]; 1448 offset += 1; 1449 1450 uint16_t i; 1451 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1452 for (i=0; (i<num_reports) && (offset < size);i++){ 1453 // sanity checks on data_length: 1454 uint8_t data_length = packet[offset + 8]; 1455 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1456 if ((offset + 9u + data_length + 1u) > size) return; 1457 // setup event 1458 uint8_t event_size = 10u + data_length; 1459 uint16_t pos = 0; 1460 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1461 event[pos++] = event_size; 1462 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1463 offset += 8; 1464 pos += 8; 1465 event[pos++] = packet[offset + 1 + data_length]; // rssi 1466 event[pos++] = data_length; 1467 offset++; 1468 (void)memcpy(&event[pos], &packet[offset], data_length); 1469 pos += data_length; 1470 offset += data_length + 1u; // rssi 1471 hci_emit_event(event, pos, 1); 1472 } 1473 } 1474 1475 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1476 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1477 uint16_t offset = 3; 1478 uint8_t num_reports = packet[offset++]; 1479 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1480 uint8_t i; 1481 for (i=0; (i<num_reports) && (offset < size);i++){ 1482 // sanity checks on data_length: 1483 uint16_t data_length = packet[offset + 23]; 1484 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1485 if ((offset + 24u + data_length) > size) return; 1486 uint16_t event_type = little_endian_read_16(packet, offset); 1487 offset += 2; 1488 if ((event_type & 0x10) != 0) { 1489 // setup legacy event 1490 uint8_t legacy_event_type; 1491 switch (event_type){ 1492 case 0b0010011: 1493 // ADV_IND 1494 legacy_event_type = 0; 1495 break; 1496 case 0b0010101: 1497 // ADV_DIRECT_IND 1498 legacy_event_type = 1; 1499 break; 1500 case 0b0010010: 1501 // ADV_SCAN_IND 1502 legacy_event_type = 2; 1503 break; 1504 case 0b0010000: 1505 // ADV_NONCONN_IND 1506 legacy_event_type = 3; 1507 break; 1508 case 0b0011011: 1509 case 0b0011010: 1510 // SCAN_RSP 1511 legacy_event_type = 4; 1512 break; 1513 default: 1514 legacy_event_type = 0; 1515 break; 1516 } 1517 uint16_t pos = 0; 1518 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1519 event[pos++] = 10u + data_length; 1520 event[pos++] = legacy_event_type; 1521 // copy address type + address 1522 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1523 offset += 7; 1524 pos += 7; 1525 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1526 offset += 4; 1527 // copy rssi 1528 event[pos++] = packet[offset++]; 1529 // skip periodic advertising interval and direct address 1530 offset += 9; 1531 // copy data len + data; 1532 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1533 pos += 1 +data_length; 1534 offset += 1+ data_length; 1535 hci_emit_event(event, pos, 1); 1536 } else { 1537 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1538 uint8_t report_len = 24 + data_length; 1539 event[1] = report_len; 1540 little_endian_store_16(event, 2, event_type); 1541 memcpy(&event[4], &packet[offset], report_len); 1542 offset += report_len; 1543 hci_emit_event(event, 2 + report_len, 1); 1544 } 1545 } 1546 } 1547 #endif 1548 1549 #endif 1550 #endif 1551 1552 #ifdef ENABLE_BLE 1553 #ifdef ENABLE_LE_PERIPHERAL 1554 static void hci_update_advertisements_enabled_for_current_roles(void){ 1555 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1556 // get number of active le slave connections 1557 int num_slave_connections = 0; 1558 btstack_linked_list_iterator_t it; 1559 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1560 while (btstack_linked_list_iterator_has_next(&it)){ 1561 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1562 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1563 if (con->state != OPEN) continue; 1564 if (con->role != HCI_ROLE_SLAVE) continue; 1565 if (!hci_is_le_connection(con)) continue; 1566 num_slave_connections++; 1567 } 1568 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1569 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1570 } else { 1571 hci_stack->le_advertisements_enabled_for_current_roles = false; 1572 } 1573 } 1574 #endif 1575 #endif 1576 1577 #ifdef ENABLE_CLASSIC 1578 static void gap_run_set_local_name(void){ 1579 hci_reserve_packet_buffer(); 1580 uint8_t * packet = hci_stack->hci_packet_buffer; 1581 // construct HCI Command and send 1582 uint16_t opcode = hci_write_local_name.opcode; 1583 hci_stack->last_cmd_opcode = opcode; 1584 packet[0] = opcode & 0xff; 1585 packet[1] = opcode >> 8; 1586 packet[2] = DEVICE_NAME_LEN; 1587 memset(&packet[3], 0, DEVICE_NAME_LEN); 1588 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1589 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1590 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1591 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1592 // expand '00:00:00:00:00:00' in name with bd_addr 1593 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1594 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1595 } 1596 1597 static void gap_run_set_eir_data(void){ 1598 hci_reserve_packet_buffer(); 1599 uint8_t * packet = hci_stack->hci_packet_buffer; 1600 // construct HCI Command in-place and send 1601 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1602 hci_stack->last_cmd_opcode = opcode; 1603 uint16_t offset = 0; 1604 packet[offset++] = opcode & 0xff; 1605 packet[offset++] = opcode >> 8; 1606 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1607 packet[offset++] = 0; // FEC not required 1608 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1609 if (hci_stack->eir_data){ 1610 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1611 ad_context_t context; 1612 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1613 uint8_t data_type = ad_iterator_get_data_type(&context); 1614 uint8_t size = ad_iterator_get_data_len(&context); 1615 const uint8_t *data = ad_iterator_get_data(&context); 1616 // copy item 1617 packet[offset++] = size + 1; 1618 packet[offset++] = data_type; 1619 memcpy(&packet[offset], data, size); 1620 // update name item 1621 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1622 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1623 } 1624 offset += size; 1625 } 1626 } else { 1627 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1628 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1629 packet[offset++] = bytes_to_copy + 1; 1630 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1631 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1632 // expand '00:00:00:00:00:00' in name with bd_addr 1633 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1634 } 1635 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1636 } 1637 1638 static void hci_run_gap_tasks_classic(void){ 1639 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1640 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1641 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1642 return; 1643 } 1644 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1645 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1646 gap_run_set_local_name(); 1647 return; 1648 } 1649 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1650 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1651 gap_run_set_eir_data(); 1652 return; 1653 } 1654 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1655 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1656 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1657 return; 1658 } 1659 // write page scan activity 1660 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1661 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1662 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1663 return; 1664 } 1665 // write page scan type 1666 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1667 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1668 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1669 return; 1670 } 1671 // write page timeout 1672 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1673 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1674 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1675 return; 1676 } 1677 // send scan enable 1678 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1679 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1680 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1681 return; 1682 } 1683 // send write scan activity 1684 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1685 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1686 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1687 return; 1688 } 1689 } 1690 #endif 1691 1692 #ifndef HAVE_HOST_CONTROLLER_API 1693 1694 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1695 if (!hci_stack->config) return 0; 1696 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1697 // Limit baud rate for Broadcom chipsets to 3 mbps 1698 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1699 baud_rate = 3000000; 1700 } 1701 return baud_rate; 1702 } 1703 1704 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1705 UNUSED(ds); 1706 1707 switch (hci_stack->substate){ 1708 case HCI_INIT_W4_SEND_RESET: 1709 log_info("Resend HCI Reset"); 1710 hci_stack->substate = HCI_INIT_SEND_RESET; 1711 hci_stack->num_cmd_packets = 1; 1712 hci_run(); 1713 break; 1714 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1715 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1716 if (hci_stack->hci_transport->reset_link){ 1717 hci_stack->hci_transport->reset_link(); 1718 } 1719 1720 /* fall through */ 1721 1722 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1723 log_info("Resend HCI Reset - CSR Warm Boot"); 1724 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1725 hci_stack->num_cmd_packets = 1; 1726 hci_run(); 1727 break; 1728 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1729 if (hci_stack->hci_transport->set_baudrate){ 1730 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1731 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1732 hci_stack->hci_transport->set_baudrate(baud_rate); 1733 } 1734 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1735 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1736 if (hci_stack->hci_transport->reset_link){ 1737 log_info("Link Reset"); 1738 hci_stack->hci_transport->reset_link(); 1739 } 1740 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1741 hci_run(); 1742 } 1743 break; 1744 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1745 // otherwise continue 1746 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1747 hci_send_cmd(&hci_read_local_supported_commands); 1748 break; 1749 default: 1750 break; 1751 } 1752 } 1753 #endif 1754 1755 static void hci_initializing_next_state(void){ 1756 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1757 } 1758 1759 static void hci_init_done(void){ 1760 // done. tell the app 1761 log_info("hci_init_done -> HCI_STATE_WORKING"); 1762 hci_stack->state = HCI_STATE_WORKING; 1763 hci_emit_state(); 1764 } 1765 1766 // assumption: hci_can_send_command_packet_now() == true 1767 static void hci_initializing_run(void){ 1768 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1769 1770 if (!hci_can_send_command_packet_now()) return; 1771 1772 #ifndef HAVE_HOST_CONTROLLER_API 1773 bool need_baud_change = hci_stack->config 1774 && hci_stack->chipset 1775 && hci_stack->chipset->set_baudrate_command 1776 && hci_stack->hci_transport->set_baudrate 1777 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1778 #endif 1779 1780 switch (hci_stack->substate){ 1781 case HCI_INIT_SEND_RESET: 1782 hci_state_reset(); 1783 1784 #ifndef HAVE_HOST_CONTROLLER_API 1785 // prepare reset if command complete not received in 100ms 1786 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1787 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1788 btstack_run_loop_add_timer(&hci_stack->timeout); 1789 #endif 1790 // send command 1791 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1792 hci_send_cmd(&hci_reset); 1793 break; 1794 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1795 hci_send_cmd(&hci_read_local_version_information); 1796 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1797 break; 1798 1799 #ifndef HAVE_HOST_CONTROLLER_API 1800 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1801 hci_state_reset(); 1802 // prepare reset if command complete not received in 100ms 1803 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1804 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1805 btstack_run_loop_add_timer(&hci_stack->timeout); 1806 // send command 1807 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1808 hci_send_cmd(&hci_reset); 1809 break; 1810 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1811 hci_state_reset(); 1812 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1813 hci_send_cmd(&hci_reset); 1814 break; 1815 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1816 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1817 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1818 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1819 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1820 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1821 break; 1822 } 1823 case HCI_INIT_SET_BD_ADDR: 1824 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1825 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1826 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1827 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1828 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1829 break; 1830 case HCI_INIT_SEND_READ_LOCAL_NAME: 1831 #ifdef ENABLE_CLASSIC 1832 hci_send_cmd(&hci_read_local_name); 1833 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1834 break; 1835 #endif 1836 /* fall through */ 1837 1838 case HCI_INIT_SEND_BAUD_CHANGE: 1839 if (need_baud_change) { 1840 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1841 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1842 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1843 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1844 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1845 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1846 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1847 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1848 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1849 btstack_run_loop_add_timer(&hci_stack->timeout); 1850 } 1851 break; 1852 } 1853 1854 /* fall through */ 1855 1856 case HCI_INIT_CUSTOM_INIT: 1857 // Custom initialization 1858 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1859 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1860 bool send_cmd = false; 1861 switch (hci_stack->chipset_result){ 1862 case BTSTACK_CHIPSET_VALID_COMMAND: 1863 send_cmd = true; 1864 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1865 break; 1866 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1867 send_cmd = true; 1868 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1869 log_info("CSR Warm Boot"); 1870 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1871 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1872 btstack_run_loop_add_timer(&hci_stack->timeout); 1873 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1874 && hci_stack->config 1875 && hci_stack->chipset 1876 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1877 && hci_stack->hci_transport->set_baudrate 1878 && hci_transport_uart_get_main_baud_rate()){ 1879 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1880 } else { 1881 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1882 } 1883 break; 1884 default: 1885 break; 1886 } 1887 1888 if (send_cmd){ 1889 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1890 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1891 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1892 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1893 break; 1894 } 1895 log_info("Init script done"); 1896 1897 // Init script download on Broadcom chipsets causes: 1898 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1899 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1900 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1901 1902 // - baud rate to reset, restore UART baud rate if needed 1903 if (need_baud_change) { 1904 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1905 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1906 hci_stack->hci_transport->set_baudrate(baud_rate); 1907 } 1908 1909 uint16_t bcm_delay_ms = 300; 1910 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1911 // -> Work around: wait here. 1912 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1913 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1914 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1915 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1916 btstack_run_loop_add_timer(&hci_stack->timeout); 1917 break; 1918 } 1919 } 1920 #endif 1921 /* fall through */ 1922 1923 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1924 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1925 hci_send_cmd(&hci_read_local_supported_commands); 1926 break; 1927 case HCI_INIT_READ_BD_ADDR: 1928 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1929 hci_send_cmd(&hci_read_bd_addr); 1930 break; 1931 case HCI_INIT_READ_BUFFER_SIZE: 1932 // only read buffer size if supported 1933 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1934 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1935 hci_send_cmd(&hci_read_buffer_size); 1936 break; 1937 } 1938 1939 /* fall through */ 1940 1941 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1942 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1943 hci_send_cmd(&hci_read_local_supported_features); 1944 break; 1945 1946 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1947 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1948 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1949 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1950 break; 1951 case HCI_INIT_HOST_BUFFER_SIZE: 1952 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1953 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1954 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1955 break; 1956 #endif 1957 1958 case HCI_INIT_SET_EVENT_MASK: 1959 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1960 if (hci_le_supported()){ 1961 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1962 } else { 1963 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1964 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1965 } 1966 break; 1967 1968 case HCI_INIT_SET_EVENT_MASK_2: 1969 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1970 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1971 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1972 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1973 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1974 // Encryption Change Event v2 - bit 25 1975 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1976 break; 1977 } 1978 1979 #ifdef ENABLE_CLASSIC 1980 /* fall through */ 1981 1982 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1983 if (hci_classic_supported() && gap_ssp_supported()){ 1984 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1985 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1986 break; 1987 } 1988 1989 /* fall through */ 1990 1991 case HCI_INIT_WRITE_INQUIRY_MODE: 1992 if (hci_classic_supported()){ 1993 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 1994 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 1995 break; 1996 } 1997 1998 /* fall through */ 1999 2000 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2001 // skip write secure connections host support if not supported or disabled 2002 if (hci_classic_supported() && hci_stack->secure_connections_enable 2003 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2004 hci_stack->secure_connections_active = true; 2005 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2006 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2007 break; 2008 } 2009 2010 /* fall through */ 2011 2012 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2013 // skip set min encryption key size 2014 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2015 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2016 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2017 break; 2018 } 2019 2020 #ifdef ENABLE_SCO_OVER_HCI 2021 /* fall through */ 2022 2023 // only sent if ENABLE_SCO_OVER_HCI is defined 2024 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2025 // skip write synchronous flow control if not supported 2026 if (hci_classic_supported() 2027 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2028 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2029 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2030 break; 2031 } 2032 /* fall through */ 2033 2034 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2035 // skip write default erroneous data reporting if not supported 2036 if (hci_classic_supported() 2037 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2038 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2039 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2040 break; 2041 } 2042 #endif 2043 2044 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2045 /* fall through */ 2046 2047 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2048 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2049 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2050 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2051 #ifdef ENABLE_SCO_OVER_HCI 2052 log_info("BCM: Route SCO data via HCI transport"); 2053 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2054 #endif 2055 #ifdef ENABLE_SCO_OVER_PCM 2056 log_info("BCM: Route SCO data via PCM interface"); 2057 #ifdef ENABLE_BCM_PCM_WBS 2058 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2059 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2060 #else 2061 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2062 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2063 #endif 2064 #endif 2065 break; 2066 } 2067 #endif 2068 2069 #ifdef ENABLE_SCO_OVER_PCM 2070 /* fall through */ 2071 2072 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2073 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2074 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2075 log_info("BCM: Config PCM interface for I2S"); 2076 #ifdef ENABLE_BCM_PCM_WBS 2077 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2078 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2079 #else 2080 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2081 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2082 #endif 2083 break; 2084 } 2085 #endif 2086 #endif 2087 2088 #ifdef ENABLE_BLE 2089 /* fall through */ 2090 2091 // LE INIT 2092 case HCI_INIT_LE_READ_BUFFER_SIZE: 2093 if (hci_le_supported()){ 2094 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2095 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2096 hci_send_cmd(&hci_le_read_buffer_size_v2); 2097 } else { 2098 hci_send_cmd(&hci_le_read_buffer_size); 2099 } 2100 break; 2101 } 2102 2103 /* fall through */ 2104 2105 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2106 // skip write le host if not supported (e.g. on LE only EM9301) 2107 if (hci_le_supported() 2108 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2109 // LE Supported Host = 1, Simultaneous Host = 0 2110 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2111 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2112 break; 2113 } 2114 2115 /* fall through */ 2116 2117 case HCI_INIT_LE_SET_EVENT_MASK: 2118 if (hci_le_supported()){ 2119 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2120 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2121 break; 2122 } 2123 #endif 2124 2125 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2126 /* fall through */ 2127 2128 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2129 if (hci_le_supported() 2130 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2131 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2132 hci_send_cmd(&hci_le_read_maximum_data_length); 2133 break; 2134 } 2135 2136 /* fall through */ 2137 2138 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2139 if (hci_le_supported() 2140 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2141 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2142 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2143 break; 2144 } 2145 #endif 2146 2147 #ifdef ENABLE_LE_CENTRAL 2148 /* fall through */ 2149 2150 case HCI_INIT_READ_WHITE_LIST_SIZE: 2151 if (hci_le_supported()){ 2152 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2153 hci_send_cmd(&hci_le_read_white_list_size); 2154 break; 2155 } 2156 2157 #endif 2158 2159 #ifdef ENABLE_LE_PERIPHERAL 2160 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2161 /* fall through */ 2162 2163 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2164 if (hci_extended_advertising_supported()){ 2165 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2166 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2167 break; 2168 } 2169 #endif 2170 #endif 2171 /* fall through */ 2172 2173 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2174 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2175 if (hci_le_supported()) { 2176 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2177 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2178 break; 2179 } 2180 #endif 2181 2182 /* fall through */ 2183 2184 case HCI_INIT_DONE: 2185 hci_stack->substate = HCI_INIT_DONE; 2186 // main init sequence complete 2187 #ifdef ENABLE_CLASSIC 2188 // check if initial Classic GAP Tasks are completed 2189 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2190 hci_run_gap_tasks_classic(); 2191 break; 2192 } 2193 #endif 2194 #ifdef ENABLE_BLE 2195 #ifdef ENABLE_LE_CENTRAL 2196 // check if initial LE GAP Tasks are completed 2197 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2198 hci_run_general_gap_le(); 2199 break; 2200 } 2201 #endif 2202 #endif 2203 hci_init_done(); 2204 break; 2205 2206 default: 2207 return; 2208 } 2209 } 2210 2211 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2212 bool command_completed = false; 2213 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2214 uint16_t opcode = little_endian_read_16(packet,3); 2215 if (opcode == hci_stack->last_cmd_opcode){ 2216 command_completed = true; 2217 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2218 } else { 2219 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2220 } 2221 } 2222 2223 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2224 uint8_t status = packet[2]; 2225 uint16_t opcode = little_endian_read_16(packet,4); 2226 if (opcode == hci_stack->last_cmd_opcode){ 2227 if (status){ 2228 command_completed = true; 2229 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2230 } else { 2231 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2232 } 2233 } else { 2234 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2235 } 2236 } 2237 #ifndef HAVE_HOST_CONTROLLER_API 2238 // Vendor == CSR 2239 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2240 // TODO: track actual command 2241 command_completed = true; 2242 } 2243 2244 // Vendor == Toshiba 2245 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2246 // TODO: track actual command 2247 command_completed = true; 2248 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2249 hci_stack->num_cmd_packets = 1; 2250 } 2251 #endif 2252 2253 return command_completed; 2254 } 2255 2256 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2257 2258 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2259 2260 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2261 2262 #ifndef HAVE_HOST_CONTROLLER_API 2263 2264 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2265 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2266 // 2267 // HCI Reset 2268 // Timeout 100 ms 2269 // HCI Reset 2270 // Command Complete Reset 2271 // HCI Read Local Version Information 2272 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2273 // hang... 2274 // 2275 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2276 if (!command_completed 2277 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2278 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2279 2280 uint16_t opcode = little_endian_read_16(packet,3); 2281 if (opcode == hci_reset.opcode){ 2282 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2283 return; 2284 } 2285 } 2286 2287 // CSR & H5 2288 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2289 if (!command_completed 2290 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2291 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2292 2293 uint16_t opcode = little_endian_read_16(packet,3); 2294 if (opcode == hci_reset.opcode){ 2295 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2296 return; 2297 } 2298 } 2299 2300 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2301 // fix: Correct substate and behave as command below 2302 if (command_completed){ 2303 switch (hci_stack->substate){ 2304 case HCI_INIT_SEND_RESET: 2305 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2306 break; 2307 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2308 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2309 break; 2310 default: 2311 break; 2312 } 2313 } 2314 2315 #endif 2316 2317 if (!command_completed) return; 2318 2319 bool need_baud_change = false; 2320 bool need_addr_change = false; 2321 2322 #ifndef HAVE_HOST_CONTROLLER_API 2323 need_baud_change = hci_stack->config 2324 && hci_stack->chipset 2325 && hci_stack->chipset->set_baudrate_command 2326 && hci_stack->hci_transport->set_baudrate 2327 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2328 2329 need_addr_change = hci_stack->custom_bd_addr_set 2330 && hci_stack->chipset 2331 && hci_stack->chipset->set_bd_addr_command; 2332 #endif 2333 2334 switch(hci_stack->substate){ 2335 2336 #ifndef HAVE_HOST_CONTROLLER_API 2337 case HCI_INIT_SEND_RESET: 2338 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2339 // fix: just correct substate and behave as command below 2340 2341 /* fall through */ 2342 #endif 2343 2344 case HCI_INIT_W4_SEND_RESET: 2345 btstack_run_loop_remove_timer(&hci_stack->timeout); 2346 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2347 return; 2348 2349 #ifndef HAVE_HOST_CONTROLLER_API 2350 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2351 // for STLC2500D, baud rate change already happened. 2352 // for others, baud rate gets changed now 2353 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2354 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2355 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2356 hci_stack->hci_transport->set_baudrate(baud_rate); 2357 } 2358 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2359 return; 2360 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2361 btstack_run_loop_remove_timer(&hci_stack->timeout); 2362 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2363 return; 2364 case HCI_INIT_W4_CUSTOM_INIT: 2365 // repeat custom init 2366 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2367 return; 2368 #endif 2369 2370 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2371 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2372 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2373 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2374 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2375 return; 2376 } 2377 if (need_addr_change){ 2378 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2379 return; 2380 } 2381 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2382 return; 2383 #ifndef HAVE_HOST_CONTROLLER_API 2384 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2385 if (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_bcm))", baud_rate); 2388 hci_stack->hci_transport->set_baudrate(baud_rate); 2389 } 2390 if (need_addr_change){ 2391 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2392 return; 2393 } 2394 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2395 return; 2396 case HCI_INIT_W4_SET_BD_ADDR: 2397 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2398 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2399 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2400 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2401 return; 2402 } 2403 // skipping st warm boot 2404 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2405 return; 2406 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2407 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2408 return; 2409 #endif 2410 2411 case HCI_INIT_DONE: 2412 // set state if we came here by fall through 2413 hci_stack->substate = HCI_INIT_DONE; 2414 return; 2415 2416 default: 2417 break; 2418 } 2419 hci_initializing_next_state(); 2420 } 2421 2422 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2423 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2424 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2425 // check if we have been aware of the HCI connection 2426 switch (conn->state){ 2427 case SENT_CREATE_CONNECTION: 2428 case RECEIVED_CONNECTION_REQUEST: 2429 break; 2430 default: 2431 return; 2432 } 2433 2434 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2435 bd_addr_t bd_address; 2436 (void)memcpy(&bd_address, conn->address, 6); 2437 2438 #ifdef ENABLE_CLASSIC 2439 // cache needed data 2440 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2441 #endif 2442 2443 // connection failed, remove entry 2444 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2445 btstack_memory_hci_connection_free( conn ); 2446 2447 #ifdef ENABLE_CLASSIC 2448 // notify client if dedicated bonding 2449 if (notify_dedicated_bonding_failed){ 2450 log_info("hci notify_dedicated_bonding_failed"); 2451 hci_emit_dedicated_bonding_result(bd_address, status); 2452 } 2453 2454 // if authentication error, also delete link key 2455 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2456 gap_drop_link_key_for_bd_addr(bd_address); 2457 } 2458 #else 2459 UNUSED(status); 2460 #endif 2461 } 2462 2463 #ifdef ENABLE_CLASSIC 2464 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2465 // SSP Controller 2466 if (features[6] & (1 << 3)){ 2467 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2468 } 2469 // eSCO 2470 if (features[3] & (1<<7)){ 2471 conn->remote_supported_features[0] |= 1; 2472 } 2473 // Extended features 2474 if (features[7] & (1<<7)){ 2475 conn->remote_supported_features[0] |= 2; 2476 } 2477 } 2478 2479 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2480 // SSP Host 2481 if (features[0] & (1 << 0)){ 2482 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2483 } 2484 // SC Host 2485 if (features[0] & (1 << 3)){ 2486 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2487 } 2488 } 2489 2490 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2491 // SC Controller 2492 if (features[1] & (1 << 0)){ 2493 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2494 } 2495 } 2496 2497 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2498 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2499 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2500 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 2501 if (conn->bonding_flags & BONDING_DEDICATED){ 2502 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2503 } 2504 } 2505 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2506 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2507 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2508 } 2509 2510 #endif 2511 2512 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2513 // handle BT initialization 2514 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2515 hci_initializing_event_handler(packet, size); 2516 } 2517 2518 // help with BT sleep 2519 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2520 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2521 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2522 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2523 hci_initializing_next_state(); 2524 } 2525 } 2526 2527 #ifdef ENABLE_CLASSIC 2528 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2529 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2530 conn->encryption_key_size = encryption_key_size; 2531 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2532 2533 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2534 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2535 conn->bonding_flags &= ~BONDING_DEDICATED; 2536 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2537 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2538 return; 2539 } 2540 2541 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2542 conn->requested_security_level = LEVEL_0; 2543 hci_emit_security_level(conn->con_handle, security_level); 2544 return; 2545 } 2546 2547 // Request remote features if not already done 2548 hci_trigger_remote_features_for_connection(conn); 2549 2550 // Request Authentication if not already done 2551 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2552 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2553 } 2554 #endif 2555 2556 static void hci_store_local_supported_commands(const uint8_t * packet){ 2557 // create mapping table 2558 #define X(name, offset, bit) { offset, bit }, 2559 static struct { 2560 uint8_t byte_offset; 2561 uint8_t bit_position; 2562 } supported_hci_commands_map [] = { 2563 SUPPORTED_HCI_COMMANDS 2564 }; 2565 #undef X 2566 2567 // create names for debug purposes 2568 #ifdef ENABLE_LOG_DEBUG 2569 #define X(name, offset, bit) #name, 2570 static const char * command_names[] = { 2571 SUPPORTED_HCI_COMMANDS 2572 }; 2573 #undef X 2574 #endif 2575 2576 hci_stack->local_supported_commands = 0; 2577 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2578 uint16_t i; 2579 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2580 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2581 #ifdef ENABLE_LOG_DEBUG 2582 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); 2583 #else 2584 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2585 #endif 2586 hci_stack->local_supported_commands |= (1LU << i); 2587 } 2588 } 2589 log_info("Local supported commands summary %04x", hci_stack->local_supported_commands); 2590 } 2591 2592 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2593 UNUSED(size); 2594 2595 uint16_t manufacturer; 2596 #ifdef ENABLE_CLASSIC 2597 hci_con_handle_t handle; 2598 hci_connection_t * conn; 2599 #endif 2600 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2601 uint8_t status; 2602 #endif 2603 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2604 le_audio_cig_t * cig; 2605 #endif 2606 2607 // get num cmd packets - limit to 1 to reduce complexity 2608 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2609 2610 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2611 switch (opcode){ 2612 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2613 if (packet[5]) break; 2614 // terminate, name 248 chars 2615 packet[6+248] = 0; 2616 log_info("local name: %s", &packet[6]); 2617 break; 2618 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2619 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2620 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2621 uint16_t acl_len = little_endian_read_16(packet, 6); 2622 uint16_t sco_len = packet[8]; 2623 2624 // determine usable ACL/SCO payload size 2625 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2626 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2627 2628 hci_stack->acl_packets_total_num = (uint8_t) little_endian_read_16(packet, 9); 2629 hci_stack->sco_packets_total_num = (uint8_t) little_endian_read_16(packet, 11); 2630 2631 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2632 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2633 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2634 } 2635 break; 2636 case HCI_OPCODE_HCI_READ_RSSI: 2637 if (packet[5] == ERROR_CODE_SUCCESS){ 2638 uint8_t event[5]; 2639 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2640 event[1] = 3; 2641 (void)memcpy(&event[2], &packet[6], 3); 2642 hci_emit_event(event, sizeof(event), 1); 2643 } 2644 break; 2645 #ifdef ENABLE_BLE 2646 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2647 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2648 hci_stack->le_iso_packets_total_num = packet[11]; 2649 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2650 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2651 2652 /* fall through */ 2653 2654 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2655 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2656 hci_stack->le_acl_packets_total_num = packet[8]; 2657 // determine usable ACL payload size 2658 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2659 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2660 } 2661 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); 2662 break; 2663 #endif 2664 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2665 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2666 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2667 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2668 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); 2669 break; 2670 #endif 2671 #ifdef ENABLE_LE_CENTRAL 2672 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2673 hci_stack->le_whitelist_capacity = packet[6]; 2674 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2675 break; 2676 #endif 2677 #ifdef ENABLE_LE_PERIPHERAL 2678 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2679 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2680 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2681 break; 2682 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2683 if (hci_stack->le_advertising_set_in_current_command != 0) { 2684 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2685 hci_stack->le_advertising_set_in_current_command = 0; 2686 if (advertising_set == NULL) break; 2687 uint8_t adv_status = packet[6]; 2688 uint8_t tx_power = packet[7]; 2689 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 }; 2690 if (adv_status == 0){ 2691 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2692 } 2693 hci_emit_event(event, sizeof(event), 1); 2694 } 2695 break; 2696 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2697 if (hci_stack->le_advertising_set_in_current_command != 0) { 2698 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2699 hci_stack->le_advertising_set_in_current_command = 0; 2700 if (advertising_set == NULL) break; 2701 uint8_t adv_status = packet[5]; 2702 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2703 if (adv_status == 0){ 2704 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2705 } 2706 hci_emit_event(event, sizeof(event), 1); 2707 } 2708 break; 2709 #endif 2710 #endif 2711 case HCI_OPCODE_HCI_READ_BD_ADDR: 2712 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2713 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)); 2714 #ifdef ENABLE_CLASSIC 2715 if (hci_stack->link_key_db){ 2716 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2717 } 2718 #endif 2719 break; 2720 #ifdef ENABLE_CLASSIC 2721 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2722 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2723 break; 2724 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2725 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2726 if (status == ERROR_CODE_SUCCESS) { 2727 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2728 } else { 2729 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2730 } 2731 break; 2732 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2733 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2734 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2735 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2736 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2737 hci_emit_event(event, sizeof(event), 1); 2738 } 2739 break; 2740 #endif 2741 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2742 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2743 2744 #ifdef ENABLE_CLASSIC 2745 // determine usable ACL packet types based on host buffer size and supported features 2746 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2747 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2748 #endif 2749 // Classic/LE 2750 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2751 break; 2752 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2753 manufacturer = little_endian_read_16(packet, 10); 2754 // map Cypress to Broadcom 2755 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2756 log_info("Treat Cypress as Broadcom"); 2757 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2758 little_endian_store_16(packet, 10, manufacturer); 2759 } 2760 hci_stack->manufacturer = manufacturer; 2761 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2762 break; 2763 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2764 hci_store_local_supported_commands(packet); 2765 break; 2766 #ifdef ENABLE_CLASSIC 2767 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2768 if (packet[5]) return; 2769 hci_stack->synchronous_flow_control_enabled = 1; 2770 break; 2771 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2772 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2773 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2774 conn = hci_connection_for_handle(handle); 2775 if (conn != NULL) { 2776 uint8_t key_size = 0; 2777 if (status == 0){ 2778 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2779 log_info("Handle %04x key Size: %u", handle, key_size); 2780 } else { 2781 key_size = 1; 2782 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2783 } 2784 hci_handle_read_encryption_key_size_complete(conn, key_size); 2785 } 2786 break; 2787 // assert pairing complete event is emitted. 2788 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2789 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2790 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2791 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2792 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2793 // lookup connection by gap pairing addr 2794 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2795 if (conn == NULL) break; 2796 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2797 break; 2798 2799 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2800 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2801 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2802 uint8_t event[67]; 2803 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2804 event[1] = 65; 2805 (void)memset(&event[2], 0, 65); 2806 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2807 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2808 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2809 event[2] = 3; 2810 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2811 } else { 2812 event[2] = 1; 2813 } 2814 } 2815 hci_emit_event(event, sizeof(event), 0); 2816 break; 2817 } 2818 2819 // note: only needed if user does not provide OOB data 2820 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2821 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2822 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2823 if (conn == NULL) break; 2824 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2825 break; 2826 #endif 2827 #endif 2828 #ifdef ENABLE_BLE 2829 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2830 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2831 // lookup CIG 2832 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2833 if (cig != NULL){ 2834 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2835 uint8_t i = 0; 2836 if (status == ERROR_CODE_SUCCESS){ 2837 // assign CIS handles to pre-allocated CIS 2838 btstack_linked_list_iterator_t it; 2839 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2840 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2841 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2842 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2843 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2844 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2845 iso_stream->con_handle = cis_handle; 2846 cig->cis_con_handles[i] = cis_handle; 2847 i++; 2848 } 2849 } 2850 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2851 hci_emit_cig_created(cig, status); 2852 } else { 2853 hci_emit_cig_created(cig, status); 2854 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2855 } 2856 } 2857 hci_stack->iso_active_operation_group_id = 0xff; 2858 break; 2859 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2860 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2861 if (status != ERROR_CODE_SUCCESS){ 2862 hci_iso_stream_requested_finalize(0xff); 2863 } 2864 break; 2865 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2866 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2867 if (status != ERROR_CODE_SUCCESS){ 2868 hci_iso_stream_requested_finalize(0xff); 2869 } 2870 break; 2871 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2872 // lookup BIG by state 2873 btstack_linked_list_iterator_t it; 2874 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2875 while (btstack_linked_list_iterator_has_next(&it)) { 2876 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2877 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2878 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2879 if (status == ERROR_CODE_SUCCESS){ 2880 big->state_vars.next_bis++; 2881 if (big->state_vars.next_bis == big->num_bis){ 2882 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2883 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2884 } else { 2885 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2886 } 2887 } else { 2888 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2889 big->state_vars.status = status; 2890 } 2891 return; 2892 } 2893 } 2894 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2895 while (btstack_linked_list_iterator_has_next(&it)) { 2896 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2897 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2898 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2899 if (status == ERROR_CODE_SUCCESS){ 2900 big_sync->state_vars.next_bis++; 2901 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2902 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2903 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2904 } else { 2905 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2906 } 2907 } else { 2908 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2909 big_sync->state_vars.status = status; 2910 } 2911 return; 2912 } 2913 } 2914 break; 2915 } 2916 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2917 // lookup BIG by state 2918 btstack_linked_list_iterator_t it; 2919 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2920 while (btstack_linked_list_iterator_has_next(&it)) { 2921 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2922 uint8_t big_handle = big_sync->big_handle; 2923 switch (big_sync->state){ 2924 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 2925 btstack_linked_list_iterator_remove(&it); 2926 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 2927 return; 2928 default: 2929 btstack_linked_list_iterator_remove(&it); 2930 hci_emit_big_sync_stopped(big_handle); 2931 return; 2932 } 2933 } 2934 break; 2935 } 2936 #endif 2937 #endif 2938 default: 2939 break; 2940 } 2941 } 2942 2943 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 2944 UNUSED(size); 2945 2946 // get num cmd packets - limit to 1 to reduce complexity 2947 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2948 2949 // get opcode and command status 2950 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 2951 2952 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 2953 uint8_t status = hci_event_command_status_get_status(packet); 2954 #endif 2955 2956 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2957 bd_addr_type_t addr_type; 2958 #endif 2959 2960 switch (opcode){ 2961 #ifdef ENABLE_CLASSIC 2962 case HCI_OPCODE_HCI_CREATE_CONNECTION: 2963 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 2964 #endif 2965 #ifdef ENABLE_LE_CENTRAL 2966 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 2967 #endif 2968 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2969 addr_type = hci_stack->outgoing_addr_type; 2970 2971 // reset outgoing address info 2972 memset(hci_stack->outgoing_addr, 0, 6); 2973 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2974 2975 // on error 2976 if (status != ERROR_CODE_SUCCESS){ 2977 #ifdef ENABLE_LE_CENTRAL 2978 if (hci_is_le_connection_type(addr_type)){ 2979 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2980 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2981 } 2982 #endif 2983 // error => outgoing connection failed 2984 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2985 if (conn != NULL){ 2986 hci_handle_connection_failed(conn, status); 2987 } 2988 } 2989 break; 2990 #endif 2991 #ifdef ENABLE_CLASSIC 2992 case HCI_OPCODE_HCI_INQUIRY: 2993 if (status == ERROR_CODE_SUCCESS) { 2994 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 2995 } else { 2996 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2997 } 2998 break; 2999 #endif 3000 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3001 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3002 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3003 if (status == ERROR_CODE_SUCCESS){ 3004 hci_iso_stream_requested_confirm(0xff); 3005 } else { 3006 hci_iso_stream_requested_finalize(0xff); 3007 } 3008 break; 3009 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3010 default: 3011 break; 3012 } 3013 } 3014 3015 #ifdef ENABLE_BLE 3016 static void event_handle_le_connection_complete(const uint8_t * packet){ 3017 bd_addr_t addr; 3018 bd_addr_type_t addr_type; 3019 hci_connection_t * conn; 3020 3021 // Connection management 3022 reverse_bd_addr(&packet[8], addr); 3023 addr_type = (bd_addr_type_t)packet[7]; 3024 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3025 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3026 3027 #ifdef ENABLE_LE_CENTRAL 3028 // handle error: error is reported only to the initiator -> outgoing connection 3029 if (packet[3]){ 3030 3031 // handle cancelled outgoing connection 3032 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3033 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3034 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3035 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3036 // reset state 3037 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3038 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3039 // get outgoing connection conn struct for direct connect 3040 conn = gap_get_outgoing_connection(); 3041 } 3042 3043 // outgoing le connection establishment is done 3044 if (conn){ 3045 // remove entry 3046 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3047 btstack_memory_hci_connection_free( conn ); 3048 } 3049 return; 3050 } 3051 #endif 3052 3053 // on success, both hosts receive connection complete event 3054 if (packet[6] == HCI_ROLE_MASTER){ 3055 #ifdef ENABLE_LE_CENTRAL 3056 // if we're master on an le connection, it was an outgoing connection and we're done with it 3057 // note: no hci_connection_t object exists yet for connect with whitelist 3058 if (hci_is_le_connection_type(addr_type)){ 3059 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3060 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3061 } 3062 #endif 3063 } else { 3064 #ifdef ENABLE_LE_PERIPHERAL 3065 // if we're slave, it was an incoming connection, advertisements have stopped 3066 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3067 #endif 3068 } 3069 3070 // LE connections are auto-accepted, so just create a connection if there isn't one already 3071 if (!conn){ 3072 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3073 } 3074 3075 // no memory, sorry. 3076 if (!conn){ 3077 return; 3078 } 3079 3080 conn->state = OPEN; 3081 conn->role = packet[6]; 3082 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3083 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3084 3085 #ifdef ENABLE_LE_PERIPHERAL 3086 if (packet[6] == HCI_ROLE_SLAVE){ 3087 hci_update_advertisements_enabled_for_current_roles(); 3088 } 3089 #endif 3090 3091 // init unenhanced att bearer mtu 3092 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3093 conn->att_connection.mtu_exchanged = false; 3094 3095 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3096 3097 // restart timer 3098 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3099 // btstack_run_loop_add_timer(&conn->timeout); 3100 3101 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3102 3103 hci_emit_nr_connections_changed(); 3104 } 3105 #endif 3106 3107 #ifdef ENABLE_CLASSIC 3108 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){ 3109 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3110 // LEVEL_4 is tested by l2cap 3111 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3112 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3113 if (level >= LEVEL_3){ 3114 // MITM not possible without keyboard or display 3115 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3116 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3117 3118 // MITM possible if one side has keyboard and the other has keyboard or display 3119 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3120 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3121 3122 // MITM not possible if one side has only display and other side has no keyboard 3123 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3124 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3125 } 3126 // LEVEL 2 requires SSP, which is a given 3127 return true; 3128 } 3129 3130 static bool btstack_is_null(uint8_t * data, uint16_t size){ 3131 uint16_t i; 3132 for (i=0; i < size ; i++){ 3133 if (data[i] != 0) { 3134 return false; 3135 } 3136 } 3137 return true; 3138 } 3139 3140 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3141 // get requested security level 3142 gap_security_level_t requested_security_level = conn->requested_security_level; 3143 if (hci_stack->gap_secure_connections_only_mode){ 3144 requested_security_level = LEVEL_4; 3145 } 3146 3147 // assess security: LEVEL 4 requires SC 3148 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3149 if ((requested_security_level == LEVEL_4) && 3150 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3151 !hci_remote_sc_enabled(conn)){ 3152 log_info("Level 4 required, but SC not supported -> abort"); 3153 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3154 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3155 return; 3156 } 3157 3158 // assess security based on io capabilities 3159 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3160 // responder: fully validate io caps of both sides as well as OOB data 3161 bool security_possible = false; 3162 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3163 3164 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3165 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3166 // so we merge the OOB data availability 3167 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3168 if (conn->classic_oob_c_192 != NULL){ 3169 have_oob_data |= 1; 3170 } 3171 if (conn->classic_oob_c_256 != NULL){ 3172 have_oob_data |= 2; 3173 } 3174 // for up to Level 3, either P-192 as well as P-256 will do 3175 // 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 3176 // if remote does not SC, we should not receive P-256 data either 3177 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3178 security_possible = true; 3179 } 3180 // for Level 4, P-256 is needed 3181 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3182 security_possible = true; 3183 } 3184 #endif 3185 3186 if (security_possible == false){ 3187 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3188 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3189 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3190 return; 3191 } 3192 } else { 3193 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3194 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3195 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3196 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3197 log_info("Level 3+ required, but no input/output -> abort"); 3198 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3199 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3200 return; 3201 } 3202 #endif 3203 #endif 3204 } 3205 3206 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3207 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3208 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3209 } else { 3210 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3211 } 3212 #endif 3213 } 3214 3215 #endif 3216 3217 static void event_handler(uint8_t *packet, uint16_t size){ 3218 3219 uint16_t event_length = packet[1]; 3220 3221 // assert packet is complete 3222 if (size != (event_length + 2u)){ 3223 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3224 return; 3225 } 3226 3227 hci_con_handle_t handle; 3228 hci_connection_t * conn; 3229 int i; 3230 3231 #ifdef ENABLE_CLASSIC 3232 hci_link_type_t link_type; 3233 bd_addr_t addr; 3234 bd_addr_type_t addr_type; 3235 #endif 3236 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3237 hci_iso_stream_t * iso_stream; 3238 le_audio_big_t * big; 3239 le_audio_big_sync_t * big_sync; 3240 #endif 3241 3242 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3243 3244 switch (hci_event_packet_get_type(packet)) { 3245 3246 case HCI_EVENT_COMMAND_COMPLETE: 3247 handle_command_complete_event(packet, size); 3248 break; 3249 3250 case HCI_EVENT_COMMAND_STATUS: 3251 handle_command_status_event(packet, size); 3252 break; 3253 3254 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3255 if (size < 3) return; 3256 uint16_t num_handles = packet[2]; 3257 if (size != (3u + num_handles * 4u)) return; 3258 #ifdef ENABLE_CLASSIC 3259 bool notify_sco = false; 3260 #endif 3261 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3262 bool notify_iso = false; 3263 #endif 3264 uint16_t offset = 3; 3265 for (i=0; i<num_handles;i++){ 3266 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3267 offset += 2u; 3268 uint16_t num_packets = little_endian_read_16(packet, offset); 3269 offset += 2u; 3270 3271 conn = hci_connection_for_handle(handle); 3272 if (conn != NULL) { 3273 3274 if (conn->num_packets_sent >= num_packets) { 3275 conn->num_packets_sent -= num_packets; 3276 } else { 3277 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3278 conn->num_packets_sent = 0; 3279 } 3280 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3281 #ifdef ENABLE_CLASSIC 3282 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3283 notify_sco = true; 3284 } 3285 #endif 3286 } 3287 3288 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3289 hci_controller_dump_packets(); 3290 #endif 3291 3292 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3293 if (conn == NULL){ 3294 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3295 if (iso_stream != NULL){ 3296 if (iso_stream->num_packets_sent >= num_packets) { 3297 iso_stream->num_packets_sent -= num_packets; 3298 } else { 3299 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3300 iso_stream->num_packets_sent = 0; 3301 } 3302 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3303 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3304 if (big != NULL){ 3305 big->num_completed_timestamp_current_valid = true; 3306 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3307 } 3308 } 3309 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3310 num_packets, handle, iso_stream->num_packets_sent); 3311 notify_iso = true; 3312 } 3313 } 3314 #endif 3315 } 3316 3317 #ifdef ENABLE_CLASSIC 3318 if (notify_sco){ 3319 hci_notify_if_sco_can_send_now(); 3320 } 3321 #endif 3322 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3323 if (notify_iso){ 3324 hci_iso_notify_can_send_now(); 3325 } 3326 #endif 3327 break; 3328 } 3329 3330 #ifdef ENABLE_CLASSIC 3331 case HCI_EVENT_FLUSH_OCCURRED: 3332 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3333 handle = hci_event_flush_occurred_get_handle(packet); 3334 conn = hci_connection_for_handle(handle); 3335 if (conn) { 3336 log_info("Flush occurred, disconnect 0x%04x", handle); 3337 conn->state = SEND_DISCONNECT; 3338 } 3339 break; 3340 3341 case HCI_EVENT_INQUIRY_COMPLETE: 3342 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3343 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3344 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3345 hci_emit_event(event, sizeof(event), 1); 3346 } 3347 break; 3348 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3349 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3350 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3351 } 3352 break; 3353 case HCI_EVENT_CONNECTION_REQUEST: 3354 reverse_bd_addr(&packet[2], addr); 3355 link_type = (hci_link_type_t) packet[11]; 3356 3357 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3358 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3359 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3360 bd_addr_copy(hci_stack->decline_addr, addr); 3361 break; 3362 } 3363 3364 if (hci_stack->gap_classic_accept_callback != NULL){ 3365 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3366 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3367 bd_addr_copy(hci_stack->decline_addr, addr); 3368 break; 3369 } 3370 } 3371 3372 // TODO: eval COD 8-10 3373 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3374 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3375 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3376 if (!conn) { 3377 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3378 } 3379 if (!conn) { 3380 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3381 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3382 bd_addr_copy(hci_stack->decline_addr, addr); 3383 hci_run(); 3384 // avoid event to higher layer 3385 return; 3386 } 3387 conn->role = HCI_ROLE_SLAVE; 3388 conn->state = RECEIVED_CONNECTION_REQUEST; 3389 // store info about eSCO 3390 if (link_type == HCI_LINK_TYPE_ESCO){ 3391 conn->remote_supported_features[0] |= 1; 3392 } 3393 hci_run(); 3394 break; 3395 3396 case HCI_EVENT_CONNECTION_COMPLETE: 3397 // Connection management 3398 reverse_bd_addr(&packet[5], addr); 3399 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3400 addr_type = BD_ADDR_TYPE_ACL; 3401 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3402 if (conn) { 3403 if (!packet[2]){ 3404 conn->state = OPEN; 3405 conn->con_handle = little_endian_read_16(packet, 3); 3406 3407 // trigger write supervision timeout if we're master 3408 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3409 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3410 } 3411 3412 // trigger write automatic flush timeout 3413 if (hci_stack->automatic_flush_timeout != 0){ 3414 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3415 } 3416 3417 // restart timer 3418 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3419 btstack_run_loop_add_timer(&conn->timeout); 3420 3421 // trigger remote features for dedicated bonding 3422 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3423 hci_trigger_remote_features_for_connection(conn); 3424 } 3425 3426 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3427 3428 hci_emit_nr_connections_changed(); 3429 } else { 3430 // connection failed 3431 hci_handle_connection_failed(conn, packet[2]); 3432 } 3433 } 3434 break; 3435 3436 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3437 reverse_bd_addr(&packet[5], addr); 3438 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3439 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3440 if (packet[2]){ 3441 // connection failed 3442 if (conn){ 3443 hci_handle_connection_failed(conn, packet[2]); 3444 } 3445 break; 3446 } 3447 if (!conn) { 3448 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3449 } 3450 if (!conn) { 3451 break; 3452 } 3453 conn->state = OPEN; 3454 conn->con_handle = little_endian_read_16(packet, 3); 3455 3456 #ifdef ENABLE_SCO_OVER_HCI 3457 // update SCO 3458 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3459 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3460 } 3461 // trigger can send now 3462 if (hci_have_usb_transport()){ 3463 hci_stack->sco_can_send_now = true; 3464 } 3465 #endif 3466 #ifdef HAVE_SCO_TRANSPORT 3467 // configure sco transport 3468 if (hci_stack->sco_transport != NULL){ 3469 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3470 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3471 } 3472 #endif 3473 break; 3474 3475 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3476 handle = little_endian_read_16(packet, 3); 3477 conn = hci_connection_for_handle(handle); 3478 if (!conn) break; 3479 if (!packet[2]){ 3480 const uint8_t * features = &packet[5]; 3481 hci_handle_remote_features_page_0(conn, features); 3482 3483 // read extended features if possible 3484 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3485 && ((conn->remote_supported_features[0] & 2) != 0)) { 3486 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3487 break; 3488 } 3489 } 3490 hci_handle_remote_features_received(conn); 3491 break; 3492 3493 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3494 handle = little_endian_read_16(packet, 3); 3495 conn = hci_connection_for_handle(handle); 3496 if (!conn) break; 3497 // status = ok, page = 1 3498 if (!packet[2]) { 3499 uint8_t page_number = packet[5]; 3500 uint8_t maximum_page_number = packet[6]; 3501 const uint8_t * features = &packet[7]; 3502 bool done = false; 3503 switch (page_number){ 3504 case 1: 3505 hci_handle_remote_features_page_1(conn, features); 3506 if (maximum_page_number >= 2){ 3507 // get Secure Connections (Controller) from Page 2 if available 3508 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3509 } else { 3510 // otherwise, assume SC (Controller) == SC (Host) 3511 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3512 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3513 } 3514 done = true; 3515 } 3516 break; 3517 case 2: 3518 hci_handle_remote_features_page_2(conn, features); 3519 done = true; 3520 break; 3521 default: 3522 break; 3523 } 3524 if (!done) break; 3525 } 3526 hci_handle_remote_features_received(conn); 3527 break; 3528 3529 case HCI_EVENT_LINK_KEY_REQUEST: 3530 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3531 hci_event_link_key_request_get_bd_addr(packet, addr); 3532 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3533 if (!conn) break; 3534 3535 // lookup link key in db if not cached 3536 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3537 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3538 } 3539 3540 // response sent by hci_run() 3541 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3542 #endif 3543 break; 3544 3545 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3546 hci_event_link_key_request_get_bd_addr(packet, addr); 3547 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3548 if (!conn) break; 3549 3550 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3551 3552 // CVE-2020-26555: ignore NULL link key 3553 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3554 if (btstack_is_null(&packet[8], 16)) break; 3555 3556 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3557 // Change Connection Encryption keeps link key type 3558 if (link_key_type != CHANGED_COMBINATION_KEY){ 3559 conn->link_key_type = link_key_type; 3560 } 3561 3562 // cache link key. link keys stored in little-endian format for legacy reasons 3563 memcpy(&conn->link_key, &packet[8], 16); 3564 3565 // only store link key: 3566 // - if bondable enabled 3567 if (hci_stack->bondable == false) break; 3568 // - if security level sufficient 3569 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3570 // - for SSP, also check if remote side requested bonding as well 3571 if (conn->link_key_type != COMBINATION_KEY){ 3572 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3573 if (!remote_bonding){ 3574 break; 3575 } 3576 } 3577 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3578 break; 3579 } 3580 3581 case HCI_EVENT_PIN_CODE_REQUEST: 3582 hci_event_pin_code_request_get_bd_addr(packet, addr); 3583 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3584 if (!conn) break; 3585 3586 hci_pairing_started(conn, false); 3587 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3588 if (!hci_stack->bondable ){ 3589 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3590 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3591 hci_run(); 3592 return; 3593 } 3594 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3595 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3596 log_info("Level 4 required, but SC not supported -> abort"); 3597 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3598 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3599 hci_run(); 3600 return; 3601 } 3602 break; 3603 3604 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3605 hci_event_io_capability_response_get_bd_addr(packet, addr); 3606 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3607 if (!conn) break; 3608 3609 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3610 hci_pairing_started(conn, true); 3611 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3612 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3613 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3614 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3615 #endif 3616 break; 3617 3618 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3619 hci_event_io_capability_response_get_bd_addr(packet, addr); 3620 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3621 if (!conn) break; 3622 3623 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3624 hci_connection_timestamp(conn); 3625 hci_pairing_started(conn, true); 3626 break; 3627 3628 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3629 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3630 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3631 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3632 if (!conn) break; 3633 3634 hci_connection_timestamp(conn); 3635 3636 hci_pairing_started(conn, true); 3637 3638 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3639 break; 3640 #endif 3641 3642 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3643 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3644 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3645 if (!conn) break; 3646 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3647 if (hci_stack->ssp_auto_accept){ 3648 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3649 }; 3650 } else { 3651 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3652 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3653 // don't forward event to app 3654 hci_run(); 3655 return; 3656 } 3657 break; 3658 3659 case HCI_EVENT_USER_PASSKEY_REQUEST: 3660 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3661 if (hci_stack->ssp_auto_accept){ 3662 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3663 }; 3664 break; 3665 3666 case HCI_EVENT_MODE_CHANGE: 3667 handle = hci_event_mode_change_get_handle(packet); 3668 conn = hci_connection_for_handle(handle); 3669 if (!conn) break; 3670 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3671 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3672 break; 3673 #endif 3674 3675 case HCI_EVENT_ENCRYPTION_CHANGE: 3676 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3677 handle = hci_event_encryption_change_get_connection_handle(packet); 3678 conn = hci_connection_for_handle(handle); 3679 if (!conn) break; 3680 if (hci_event_encryption_change_get_status(packet) == 0u) { 3681 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3682 if (encryption_enabled){ 3683 if (hci_is_le_connection(conn)){ 3684 // For LE, we accept connection as encrypted 3685 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3686 } 3687 #ifdef ENABLE_CLASSIC 3688 else { 3689 3690 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3691 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3692 bool connected_uses_aes_ccm = encryption_enabled == 2; 3693 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3694 log_info("SC during pairing, but only E0 now -> abort"); 3695 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3696 break; 3697 } 3698 3699 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3700 if (connected_uses_aes_ccm){ 3701 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3702 } 3703 3704 #ifdef ENABLE_TESTING_SUPPORT 3705 // work around for issue with PTS dongle 3706 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3707 #endif 3708 // validate encryption key size 3709 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3710 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3711 // already got encryption key size 3712 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3713 } else { 3714 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3715 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3716 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3717 } else { 3718 // if not, pretend everything is perfect 3719 hci_handle_read_encryption_key_size_complete(conn, 16); 3720 } 3721 } 3722 } 3723 #endif 3724 } else { 3725 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3726 } 3727 } else { 3728 uint8_t status = hci_event_encryption_change_get_status(packet); 3729 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3730 conn->bonding_flags &= ~BONDING_DEDICATED; 3731 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3732 conn->bonding_status = status; 3733 } 3734 } 3735 3736 break; 3737 3738 #ifdef ENABLE_CLASSIC 3739 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3740 handle = hci_event_authentication_complete_get_connection_handle(packet); 3741 conn = hci_connection_for_handle(handle); 3742 if (!conn) break; 3743 3744 // clear authentication active flag 3745 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3746 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3747 3748 // authenticated only if auth status == 0 3749 if (hci_event_authentication_complete_get_status(packet) == 0){ 3750 // authenticated 3751 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3752 3753 // If not already encrypted, start encryption 3754 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3755 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3756 break; 3757 } 3758 } 3759 3760 // emit updated security level 3761 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3762 break; 3763 3764 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3765 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3766 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3767 if (!conn) break; 3768 3769 // treat successfully paired connection as authenticated 3770 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3771 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3772 } 3773 3774 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3775 break; 3776 #endif 3777 3778 // HCI_EVENT_DISCONNECTION_COMPLETE 3779 // has been split, to first notify stack before shutting connection down 3780 // see end of function, too. 3781 case HCI_EVENT_DISCONNECTION_COMPLETE: 3782 if (packet[2]) break; // status != 0 3783 handle = little_endian_read_16(packet, 3); 3784 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3785 if (hci_stack->acl_fragmentation_total_size > 0u) { 3786 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3787 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3788 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3789 hci_stack->acl_fragmentation_total_size = 0; 3790 hci_stack->acl_fragmentation_pos = 0; 3791 if (release_buffer){ 3792 hci_release_packet_buffer(); 3793 } 3794 } 3795 } 3796 3797 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3798 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3799 if (hci_stack->iso_fragmentation_total_size > 0u) { 3800 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3801 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3802 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3803 hci_stack->iso_fragmentation_total_size = 0; 3804 hci_stack->iso_fragmentation_pos = 0; 3805 if (release_buffer){ 3806 hci_release_packet_buffer(); 3807 } 3808 } 3809 } 3810 3811 // finalize iso stream if handle matches 3812 iso_stream = hci_iso_stream_for_con_handle(handle); 3813 if (iso_stream != NULL){ 3814 hci_iso_stream_finalize(iso_stream); 3815 break; 3816 } 3817 #endif 3818 3819 conn = hci_connection_for_handle(handle); 3820 if (!conn) break; 3821 #ifdef ENABLE_CLASSIC 3822 // pairing failed if it was ongoing 3823 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3824 #endif 3825 3826 // emit dedicatd bonding event 3827 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3828 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3829 } 3830 3831 // mark connection for shutdown, stop timers, reset state 3832 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3833 hci_connection_stop_timer(conn); 3834 hci_connection_init(conn); 3835 3836 #ifdef ENABLE_BLE 3837 #ifdef ENABLE_LE_PERIPHERAL 3838 // re-enable advertisements for le connections if active 3839 if (hci_is_le_connection(conn)){ 3840 hci_update_advertisements_enabled_for_current_roles(); 3841 } 3842 #endif 3843 #endif 3844 break; 3845 3846 case HCI_EVENT_HARDWARE_ERROR: 3847 log_error("Hardware Error: 0x%02x", packet[2]); 3848 if (hci_stack->hardware_error_callback){ 3849 (*hci_stack->hardware_error_callback)(packet[2]); 3850 } else { 3851 // if no special requests, just reboot stack 3852 hci_power_control_off(); 3853 hci_power_control_on(); 3854 } 3855 break; 3856 3857 #ifdef ENABLE_CLASSIC 3858 case HCI_EVENT_ROLE_CHANGE: 3859 if (packet[2]) break; // status != 0 3860 reverse_bd_addr(&packet[3], addr); 3861 addr_type = BD_ADDR_TYPE_ACL; 3862 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3863 if (!conn) break; 3864 conn->role = packet[9]; 3865 break; 3866 #endif 3867 3868 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3869 // release packet buffer only for asynchronous transport and if there are not further fragments 3870 if (hci_transport_synchronous()) { 3871 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3872 return; // instead of break: to avoid re-entering hci_run() 3873 } 3874 hci_stack->acl_fragmentation_tx_active = 0; 3875 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3876 hci_stack->iso_fragmentation_tx_active = 0; 3877 if (hci_stack->iso_fragmentation_total_size) break; 3878 #endif 3879 if (hci_stack->acl_fragmentation_total_size) break; 3880 hci_release_packet_buffer(); 3881 3882 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3883 hci_iso_notify_can_send_now(); 3884 #endif 3885 // L2CAP receives this event via the hci_emit_event below 3886 3887 #ifdef ENABLE_CLASSIC 3888 // For SCO, we do the can_send_now_check here 3889 hci_notify_if_sco_can_send_now(); 3890 #endif 3891 break; 3892 3893 #ifdef ENABLE_CLASSIC 3894 case HCI_EVENT_SCO_CAN_SEND_NOW: 3895 // For SCO, we do the can_send_now_check here 3896 hci_stack->sco_can_send_now = true; 3897 hci_notify_if_sco_can_send_now(); 3898 return; 3899 3900 // explode inquriy results for easier consumption 3901 case HCI_EVENT_INQUIRY_RESULT: 3902 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3903 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3904 gap_inquiry_explode(packet, size); 3905 break; 3906 #endif 3907 3908 #ifdef ENABLE_BLE 3909 case HCI_EVENT_LE_META: 3910 switch (packet[2]){ 3911 #ifdef ENABLE_LE_CENTRAL 3912 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3913 if (!hci_stack->le_scanning_enabled) break; 3914 le_handle_advertisement_report(packet, size); 3915 break; 3916 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3917 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3918 if (!hci_stack->le_scanning_enabled) break; 3919 le_handle_extended_advertisement_report(packet, size); 3920 break; 3921 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 3922 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 3923 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 3924 break; 3925 #endif 3926 #endif 3927 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3928 event_handle_le_connection_complete(packet); 3929 break; 3930 3931 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3932 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 3933 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 3934 conn = hci_connection_for_handle(handle); 3935 if (!conn) break; 3936 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 3937 break; 3938 3939 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 3940 // connection 3941 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 3942 conn = hci_connection_for_handle(handle); 3943 if (conn) { 3944 // read arguments 3945 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 3946 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 3947 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 3948 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 3949 3950 // validate against current connection parameter range 3951 le_connection_parameter_range_t existing_range; 3952 gap_get_connection_parameter_range(&existing_range); 3953 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 3954 if (update_parameter){ 3955 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 3956 conn->le_conn_interval_min = le_conn_interval_min; 3957 conn->le_conn_interval_max = le_conn_interval_max; 3958 conn->le_conn_latency = le_conn_latency; 3959 conn->le_supervision_timeout = le_supervision_timeout; 3960 } else { 3961 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 3962 } 3963 } 3964 break; 3965 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 3966 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 3967 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 3968 conn = hci_connection_for_handle(handle); 3969 if (conn) { 3970 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 3971 } 3972 break; 3973 #endif 3974 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3975 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 3976 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 3977 iso_stream = hci_iso_stream_for_con_handle(handle); 3978 if (iso_stream){ 3979 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 3980 if (status == ERROR_CODE_SUCCESS){ 3981 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3982 } else { 3983 hci_iso_stream_finalize(iso_stream); 3984 } 3985 // CIG/CIS 3986 if (iso_stream->iso_type == HCI_ISO_TYPE_CIS){ 3987 le_audio_cig_t * cig = hci_cig_for_id(iso_stream->group_id); 3988 if (cig){ 3989 uint8_t i; 3990 for (i=0;i<cig->num_cis;i++){ 3991 if (cig->cis_con_handles[i] == handle){ 3992 hci_emit_cis_created(cig, i, status); 3993 } 3994 } 3995 } 3996 } 3997 } 3998 break; 3999 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4000 hci_stack->iso_active_operation_group_id = 0xff; 4001 big = hci_big_for_handle(packet[4]); 4002 if (big != NULL){ 4003 uint8_t status = packet[3]; 4004 if (status == ERROR_CODE_SUCCESS){ 4005 // store bis_con_handles and trigger iso path setup 4006 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4007 uint8_t i; 4008 for (i=0;i<num_bis;i++){ 4009 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4010 big->bis_con_handles[i] = bis_handle; 4011 // assign bis handle 4012 btstack_linked_list_iterator_t it; 4013 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4014 while (btstack_linked_list_iterator_has_next(&it)){ 4015 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4016 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4017 (iso_stream->group_id == big->big_handle)){ 4018 iso_stream->con_handle = bis_handle; 4019 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4020 break; 4021 } 4022 } 4023 } 4024 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4025 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4026 big->state_vars.next_bis = 0; 4027 } 4028 } else { 4029 // create BIG failed or has been stopped by us 4030 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4031 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4032 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4033 hci_emit_big_created(big, status); 4034 } else { 4035 hci_emit_big_terminated(big); 4036 } 4037 } 4038 } 4039 break; 4040 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4041 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4042 if (big != NULL){ 4043 // finalize associated ISO streams 4044 btstack_linked_list_iterator_t it; 4045 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4046 while (btstack_linked_list_iterator_has_next(&it)){ 4047 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4048 if (iso_stream->group_id == big->big_handle){ 4049 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->con_handle); 4050 btstack_linked_list_iterator_remove(&it); 4051 btstack_memory_hci_iso_stream_free(iso_stream); 4052 } 4053 } 4054 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4055 switch (big->state){ 4056 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4057 hci_emit_big_created(big, big->state_vars.status); 4058 break; 4059 default: 4060 hci_emit_big_terminated(big); 4061 break; 4062 } 4063 } 4064 break; 4065 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4066 big_sync = hci_big_sync_for_handle(packet[4]); 4067 if (big_sync != NULL){ 4068 uint8_t status = packet[3]; 4069 uint8_t big_handle = packet[4]; 4070 if (status == ERROR_CODE_SUCCESS){ 4071 // store bis_con_handles and trigger iso path setup 4072 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4073 uint8_t i; 4074 for (i=0;i<num_bis;i++){ 4075 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4076 } 4077 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4078 // trigger iso path setup 4079 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4080 big_sync->state_vars.next_bis = 0; 4081 } 4082 } else { 4083 // create BIG Sync failed or has been stopped by us 4084 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4085 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4086 hci_emit_big_sync_created(big_sync, status); 4087 } else { 4088 hci_emit_big_sync_stopped(big_handle); 4089 } 4090 } 4091 } 4092 break; 4093 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4094 big_sync = hci_big_sync_for_handle(packet[4]); 4095 if (big_sync != NULL){ 4096 uint8_t big_handle = packet[4]; 4097 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4098 hci_emit_big_sync_stopped(big_handle); 4099 } 4100 break; 4101 #endif 4102 default: 4103 break; 4104 } 4105 break; 4106 #endif 4107 case HCI_EVENT_VENDOR_SPECIFIC: 4108 // Vendor specific commands often create vendor specific event instead of num completed packets 4109 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4110 switch (hci_stack->manufacturer){ 4111 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4112 hci_stack->num_cmd_packets = 1; 4113 break; 4114 default: 4115 break; 4116 } 4117 break; 4118 default: 4119 break; 4120 } 4121 4122 handle_event_for_current_stack_state(packet, size); 4123 4124 // notify upper stack 4125 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4126 4127 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4128 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4129 handle = little_endian_read_16(packet, 3); 4130 hci_connection_t * aConn = hci_connection_for_handle(handle); 4131 // discard connection if app did not trigger a reconnect in the event handler 4132 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4133 hci_shutdown_connection(aConn); 4134 } 4135 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4136 hci_controller_dump_packets(); 4137 #endif 4138 } 4139 4140 // execute main loop 4141 hci_run(); 4142 } 4143 4144 #ifdef ENABLE_CLASSIC 4145 4146 #ifdef ENABLE_SCO_OVER_HCI 4147 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4148 static void sco_schedule_tx(hci_connection_t * conn); 4149 4150 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4151 log_debug("SCO TX Timeout"); 4152 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4153 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4154 if (!conn) return; 4155 4156 // trigger send 4157 conn->sco_tx_ready = 1; 4158 // extra packet if CVSD but SCO buffer is too short 4159 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4160 conn->sco_tx_ready++; 4161 } 4162 hci_notify_if_sco_can_send_now(); 4163 } 4164 4165 4166 #define SCO_TX_AFTER_RX_MS (6) 4167 4168 static void sco_schedule_tx(hci_connection_t * conn){ 4169 4170 uint32_t now = btstack_run_loop_get_time_ms(); 4171 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4172 int time_delta_ms = sco_tx_ms - now; 4173 4174 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4175 4176 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4177 btstack_run_loop_remove_timer(timer); 4178 btstack_run_loop_set_timer(timer, time_delta_ms); 4179 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4180 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4181 btstack_run_loop_add_timer(timer); 4182 } 4183 #endif 4184 4185 static void sco_handler(uint8_t * packet, uint16_t size){ 4186 // lookup connection struct 4187 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4188 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4189 if (!conn) return; 4190 4191 #ifdef ENABLE_SCO_OVER_HCI 4192 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4193 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4194 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4195 packet[2] = 0x3c; 4196 memmove(&packet[3], &packet[23], 63); 4197 size = 63; 4198 } 4199 } 4200 4201 if (hci_have_usb_transport()){ 4202 // Nothing to do 4203 } else { 4204 // 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); 4205 if (hci_stack->synchronous_flow_control_enabled == 0){ 4206 uint32_t now = btstack_run_loop_get_time_ms(); 4207 4208 if (!conn->sco_rx_valid){ 4209 // ignore first 10 packets 4210 conn->sco_rx_count++; 4211 // log_debug("sco rx count %u", conn->sco_rx_count); 4212 if (conn->sco_rx_count == 10) { 4213 // use first timestamp as is and pretent it just started 4214 conn->sco_rx_ms = now; 4215 conn->sco_rx_valid = 1; 4216 conn->sco_rx_count = 0; 4217 sco_schedule_tx(conn); 4218 } 4219 } else { 4220 // track expected arrival timme 4221 conn->sco_rx_count++; 4222 conn->sco_rx_ms += 7; 4223 int delta = (int32_t) (now - conn->sco_rx_ms); 4224 if (delta > 0){ 4225 conn->sco_rx_ms++; 4226 } 4227 // log_debug("sco rx %u", conn->sco_rx_ms); 4228 sco_schedule_tx(conn); 4229 } 4230 } 4231 } 4232 #endif 4233 4234 // deliver to app 4235 if (hci_stack->sco_packet_handler) { 4236 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4237 } 4238 4239 #ifdef HAVE_SCO_TRANSPORT 4240 // We can send one packet for each received packet 4241 conn->sco_tx_ready++; 4242 hci_notify_if_sco_can_send_now(); 4243 #endif 4244 4245 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4246 conn->num_packets_completed++; 4247 hci_stack->host_completed_packets = 1; 4248 hci_run(); 4249 #endif 4250 } 4251 #endif 4252 4253 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4254 hci_dump_packet(packet_type, 1, packet, size); 4255 switch (packet_type) { 4256 case HCI_EVENT_PACKET: 4257 event_handler(packet, size); 4258 break; 4259 case HCI_ACL_DATA_PACKET: 4260 acl_handler(packet, size); 4261 break; 4262 #ifdef ENABLE_CLASSIC 4263 case HCI_SCO_DATA_PACKET: 4264 sco_handler(packet, size); 4265 break; 4266 #endif 4267 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4268 case HCI_ISO_DATA_PACKET: 4269 hci_iso_packet_handler(packet, size); 4270 break; 4271 #endif 4272 default: 4273 break; 4274 } 4275 } 4276 4277 /** 4278 * @brief Add event packet handler. 4279 */ 4280 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4281 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4282 } 4283 4284 /** 4285 * @brief Remove event packet handler. 4286 */ 4287 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4288 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4289 } 4290 4291 /** Register HCI packet handlers */ 4292 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4293 hci_stack->acl_packet_handler = handler; 4294 } 4295 4296 #ifdef ENABLE_CLASSIC 4297 /** 4298 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4299 */ 4300 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4301 hci_stack->sco_packet_handler = handler; 4302 } 4303 #endif 4304 4305 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4306 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4307 hci_stack->iso_packet_handler = handler; 4308 } 4309 #endif 4310 4311 static void hci_state_reset(void){ 4312 // no connections yet 4313 hci_stack->connections = NULL; 4314 4315 // keep discoverable/connectable as this has been requested by the client(s) 4316 // hci_stack->discoverable = 0; 4317 // hci_stack->connectable = 0; 4318 // hci_stack->bondable = 1; 4319 // hci_stack->own_addr_type = 0; 4320 4321 // buffer is free 4322 hci_stack->hci_packet_buffer_reserved = false; 4323 4324 // no pending cmds 4325 hci_stack->decline_reason = 0; 4326 4327 hci_stack->secure_connections_active = false; 4328 4329 #ifdef ENABLE_CLASSIC 4330 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4331 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4332 4333 hci_stack->gap_tasks_classic = 4334 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4335 GAP_TASK_SET_CLASS_OF_DEVICE | 4336 GAP_TASK_SET_LOCAL_NAME | 4337 GAP_TASK_SET_EIR_DATA | 4338 GAP_TASK_WRITE_SCAN_ENABLE | 4339 GAP_TASK_WRITE_PAGE_TIMEOUT; 4340 #endif 4341 4342 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4343 hci_stack->classic_read_local_oob_data = false; 4344 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4345 #endif 4346 4347 // LE 4348 #ifdef ENABLE_BLE 4349 memset(hci_stack->le_random_address, 0, 6); 4350 hci_stack->le_random_address_set = 0; 4351 #endif 4352 #ifdef ENABLE_LE_CENTRAL 4353 hci_stack->le_scanning_active = false; 4354 hci_stack->le_scanning_param_update = true; 4355 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4356 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4357 hci_stack->le_whitelist_capacity = 0; 4358 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4359 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4360 #endif 4361 #endif 4362 #ifdef ENABLE_LE_PERIPHERAL 4363 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4364 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4365 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4366 } 4367 if (hci_stack->le_advertisements_data != NULL){ 4368 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4369 } 4370 #endif 4371 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4372 hci_stack->iso_active_operation_group_id = 0xff; 4373 #endif 4374 } 4375 4376 #ifdef ENABLE_CLASSIC 4377 /** 4378 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4379 */ 4380 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4381 // store and open remote device db 4382 hci_stack->link_key_db = link_key_db; 4383 if (hci_stack->link_key_db) { 4384 hci_stack->link_key_db->open(); 4385 } 4386 } 4387 #endif 4388 4389 void hci_init(const hci_transport_t *transport, const void *config){ 4390 4391 #ifdef HAVE_MALLOC 4392 if (!hci_stack) { 4393 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4394 } 4395 #else 4396 hci_stack = &hci_stack_static; 4397 #endif 4398 memset(hci_stack, 0, sizeof(hci_stack_t)); 4399 4400 // reference to use transport layer implementation 4401 hci_stack->hci_transport = transport; 4402 4403 // reference to used config 4404 hci_stack->config = config; 4405 4406 // setup pointer for outgoing packet buffer 4407 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4408 4409 // max acl payload size defined in config.h 4410 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4411 4412 // register packet handlers with transport 4413 transport->register_packet_handler(&packet_handler); 4414 4415 hci_stack->state = HCI_STATE_OFF; 4416 4417 // class of device 4418 hci_stack->class_of_device = 0x007a020c; // Smartphone 4419 4420 // bondable by default 4421 hci_stack->bondable = 1; 4422 4423 #ifdef ENABLE_CLASSIC 4424 // classic name 4425 hci_stack->local_name = default_classic_name; 4426 4427 // Master slave policy 4428 hci_stack->master_slave_policy = 1; 4429 4430 // Allow Role Switch 4431 hci_stack->allow_role_switch = 1; 4432 4433 // Default / minimum security level = 2 4434 hci_stack->gap_security_level = LEVEL_2; 4435 4436 // Default Security Mode 4 4437 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4438 4439 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4440 hci_stack->gap_required_encyrption_key_size = 7; 4441 4442 // Link Supervision Timeout 4443 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4444 4445 #endif 4446 4447 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4448 hci_stack->ssp_enable = 1; 4449 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4450 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4451 hci_stack->ssp_auto_accept = 1; 4452 4453 // Secure Connections: enable (requires support from Controller) 4454 hci_stack->secure_connections_enable = true; 4455 4456 // voice setting - signed 16 bit pcm data with CVSD over the air 4457 hci_stack->sco_voice_setting = 0x60; 4458 4459 #ifdef ENABLE_LE_CENTRAL 4460 // connection parameter to use for outgoing connections 4461 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4462 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4463 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4464 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4465 hci_stack->le_connection_latency = 4; // 4 4466 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4467 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4468 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4469 4470 // default LE Scanning 4471 hci_stack->le_scan_type = 0x1; // active 4472 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4473 hci_stack->le_scan_window = 0x30; // 30 ms 4474 #endif 4475 4476 #ifdef ENABLE_LE_PERIPHERAL 4477 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4478 #endif 4479 4480 // connection parameter range used to answer connection parameter update requests in l2cap 4481 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4482 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4483 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4484 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4485 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4486 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4487 4488 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4489 hci_stack->iso_packets_to_queue = 1; 4490 #endif 4491 4492 hci_state_reset(); 4493 } 4494 4495 void hci_deinit(void){ 4496 btstack_run_loop_remove_timer(&hci_stack->timeout); 4497 #ifdef HAVE_MALLOC 4498 if (hci_stack) { 4499 free(hci_stack); 4500 } 4501 #endif 4502 hci_stack = NULL; 4503 4504 #ifdef ENABLE_CLASSIC 4505 disable_l2cap_timeouts = 0; 4506 #endif 4507 } 4508 4509 /** 4510 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4511 */ 4512 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4513 hci_stack->chipset = chipset_driver; 4514 4515 // reset chipset driver - init is also called on power_up 4516 if (hci_stack->chipset && hci_stack->chipset->init){ 4517 hci_stack->chipset->init(hci_stack->config); 4518 } 4519 } 4520 4521 /** 4522 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4523 */ 4524 void hci_set_control(const btstack_control_t *hardware_control){ 4525 // references to used control implementation 4526 hci_stack->control = hardware_control; 4527 // init with transport config 4528 hardware_control->init(hci_stack->config); 4529 } 4530 4531 static void hci_discard_connections(void){ 4532 btstack_linked_list_iterator_t it; 4533 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4534 while (btstack_linked_list_iterator_has_next(&it)){ 4535 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4536 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4537 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4538 hci_shutdown_connection(connection); 4539 } 4540 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4541 while (hci_stack->iso_streams != NULL){ 4542 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4543 } 4544 #endif 4545 } 4546 4547 void hci_close(void){ 4548 4549 #ifdef ENABLE_CLASSIC 4550 // close remote device db 4551 if (hci_stack->link_key_db) { 4552 hci_stack->link_key_db->close(); 4553 } 4554 #endif 4555 4556 hci_discard_connections(); 4557 4558 hci_power_control(HCI_POWER_OFF); 4559 4560 #ifdef HAVE_MALLOC 4561 free(hci_stack); 4562 #endif 4563 hci_stack = NULL; 4564 } 4565 4566 #ifdef HAVE_SCO_TRANSPORT 4567 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4568 hci_stack->sco_transport = sco_transport; 4569 sco_transport->register_packet_handler(&packet_handler); 4570 } 4571 #endif 4572 4573 #ifdef ENABLE_CLASSIC 4574 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4575 // validate ranage and set 4576 if (encryption_key_size < 7) return; 4577 if (encryption_key_size > 16) return; 4578 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4579 } 4580 4581 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4582 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4583 hci_stack->gap_security_mode = security_mode; 4584 return ERROR_CODE_SUCCESS; 4585 } else { 4586 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4587 } 4588 } 4589 4590 gap_security_mode_t gap_get_security_mode(void){ 4591 return hci_stack->gap_security_mode; 4592 } 4593 4594 void gap_set_security_level(gap_security_level_t security_level){ 4595 hci_stack->gap_security_level = security_level; 4596 } 4597 4598 gap_security_level_t gap_get_security_level(void){ 4599 if (hci_stack->gap_secure_connections_only_mode){ 4600 return LEVEL_4; 4601 } 4602 return hci_stack->gap_security_level; 4603 } 4604 4605 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4606 hci_stack->gap_minimal_service_security_level = security_level; 4607 } 4608 4609 void gap_set_secure_connections_only_mode(bool enable){ 4610 hci_stack->gap_secure_connections_only_mode = enable; 4611 } 4612 4613 bool gap_get_secure_connections_only_mode(void){ 4614 return hci_stack->gap_secure_connections_only_mode; 4615 } 4616 #endif 4617 4618 #ifdef ENABLE_CLASSIC 4619 void gap_set_class_of_device(uint32_t class_of_device){ 4620 hci_stack->class_of_device = class_of_device; 4621 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4622 hci_run(); 4623 } 4624 4625 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4626 hci_stack->default_link_policy_settings = default_link_policy_settings; 4627 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4628 hci_run(); 4629 } 4630 4631 void gap_set_allow_role_switch(bool allow_role_switch){ 4632 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4633 } 4634 4635 uint8_t hci_get_allow_role_switch(void){ 4636 return hci_stack->allow_role_switch; 4637 } 4638 4639 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4640 hci_stack->link_supervision_timeout = link_supervision_timeout; 4641 } 4642 4643 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4644 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4645 } 4646 4647 uint16_t hci_automatic_flush_timeout(void){ 4648 return hci_stack->automatic_flush_timeout; 4649 } 4650 4651 void hci_disable_l2cap_timeout_check(void){ 4652 disable_l2cap_timeouts = 1; 4653 } 4654 #endif 4655 4656 #ifndef HAVE_HOST_CONTROLLER_API 4657 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4658 void hci_set_bd_addr(bd_addr_t addr){ 4659 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4660 hci_stack->custom_bd_addr_set = 1; 4661 } 4662 #endif 4663 4664 // State-Module-Driver overview 4665 // state module low-level 4666 // HCI_STATE_OFF off close 4667 // HCI_STATE_INITIALIZING, on open 4668 // HCI_STATE_WORKING, on open 4669 // HCI_STATE_HALTING, on open 4670 // HCI_STATE_SLEEPING, off/sleep close 4671 // HCI_STATE_FALLING_ASLEEP on open 4672 4673 static int hci_power_control_on(void){ 4674 4675 // power on 4676 int err = 0; 4677 if (hci_stack->control && hci_stack->control->on){ 4678 err = (*hci_stack->control->on)(); 4679 } 4680 if (err){ 4681 log_error( "POWER_ON failed"); 4682 hci_emit_hci_open_failed(); 4683 return err; 4684 } 4685 4686 // int chipset driver 4687 if (hci_stack->chipset && hci_stack->chipset->init){ 4688 hci_stack->chipset->init(hci_stack->config); 4689 } 4690 4691 // init transport 4692 if (hci_stack->hci_transport->init){ 4693 hci_stack->hci_transport->init(hci_stack->config); 4694 } 4695 4696 // open transport 4697 err = hci_stack->hci_transport->open(); 4698 if (err){ 4699 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4700 if (hci_stack->control && hci_stack->control->off){ 4701 (*hci_stack->control->off)(); 4702 } 4703 hci_emit_hci_open_failed(); 4704 return err; 4705 } 4706 return 0; 4707 } 4708 4709 static void hci_power_control_off(void){ 4710 4711 log_info("hci_power_control_off"); 4712 4713 // close low-level device 4714 hci_stack->hci_transport->close(); 4715 4716 log_info("hci_power_control_off - hci_transport closed"); 4717 4718 // power off 4719 if (hci_stack->control && hci_stack->control->off){ 4720 (*hci_stack->control->off)(); 4721 } 4722 4723 log_info("hci_power_control_off - control closed"); 4724 4725 hci_stack->state = HCI_STATE_OFF; 4726 } 4727 4728 static void hci_power_control_sleep(void){ 4729 4730 log_info("hci_power_control_sleep"); 4731 4732 #if 0 4733 // don't close serial port during sleep 4734 4735 // close low-level device 4736 hci_stack->hci_transport->close(hci_stack->config); 4737 #endif 4738 4739 // sleep mode 4740 if (hci_stack->control && hci_stack->control->sleep){ 4741 (*hci_stack->control->sleep)(); 4742 } 4743 4744 hci_stack->state = HCI_STATE_SLEEPING; 4745 } 4746 4747 static int hci_power_control_wake(void){ 4748 4749 log_info("hci_power_control_wake"); 4750 4751 // wake on 4752 if (hci_stack->control && hci_stack->control->wake){ 4753 (*hci_stack->control->wake)(); 4754 } 4755 4756 #if 0 4757 // open low-level device 4758 int err = hci_stack->hci_transport->open(hci_stack->config); 4759 if (err){ 4760 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4761 if (hci_stack->control && hci_stack->control->off){ 4762 (*hci_stack->control->off)(); 4763 } 4764 hci_emit_hci_open_failed(); 4765 return err; 4766 } 4767 #endif 4768 4769 return 0; 4770 } 4771 4772 static void hci_power_enter_initializing_state(void){ 4773 // set up state machine 4774 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4775 hci_stack->hci_packet_buffer_reserved = false; 4776 hci_stack->state = HCI_STATE_INITIALIZING; 4777 hci_stack->substate = HCI_INIT_SEND_RESET; 4778 } 4779 4780 static void hci_power_enter_halting_state(void){ 4781 #ifdef ENABLE_BLE 4782 hci_whitelist_free(); 4783 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4784 hci_periodic_advertiser_list_free(); 4785 #endif 4786 #endif 4787 // see hci_run 4788 hci_stack->state = HCI_STATE_HALTING; 4789 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4790 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4791 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4792 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4793 btstack_run_loop_add_timer(&hci_stack->timeout); 4794 } 4795 4796 // returns error 4797 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4798 int err; 4799 switch (power_mode){ 4800 case HCI_POWER_ON: 4801 err = hci_power_control_on(); 4802 if (err != 0) { 4803 log_error("hci_power_control_on() error %d", err); 4804 return err; 4805 } 4806 hci_power_enter_initializing_state(); 4807 break; 4808 case HCI_POWER_OFF: 4809 // do nothing 4810 break; 4811 case HCI_POWER_SLEEP: 4812 // do nothing (with SLEEP == OFF) 4813 break; 4814 default: 4815 btstack_assert(false); 4816 break; 4817 } 4818 return ERROR_CODE_SUCCESS; 4819 } 4820 4821 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4822 switch (power_mode){ 4823 case HCI_POWER_ON: 4824 // do nothing 4825 break; 4826 case HCI_POWER_OFF: 4827 // no connections yet, just turn it off 4828 hci_power_control_off(); 4829 break; 4830 case HCI_POWER_SLEEP: 4831 // no connections yet, just turn it off 4832 hci_power_control_sleep(); 4833 break; 4834 default: 4835 btstack_assert(false); 4836 break; 4837 } 4838 return ERROR_CODE_SUCCESS; 4839 } 4840 4841 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4842 switch (power_mode){ 4843 case HCI_POWER_ON: 4844 // do nothing 4845 break; 4846 case HCI_POWER_OFF: 4847 hci_power_enter_halting_state(); 4848 break; 4849 case HCI_POWER_SLEEP: 4850 // see hci_run 4851 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4852 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4853 break; 4854 default: 4855 btstack_assert(false); 4856 break; 4857 } 4858 return ERROR_CODE_SUCCESS; 4859 } 4860 4861 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4862 switch (power_mode){ 4863 case HCI_POWER_ON: 4864 hci_power_enter_initializing_state(); 4865 break; 4866 case HCI_POWER_OFF: 4867 // do nothing 4868 break; 4869 case HCI_POWER_SLEEP: 4870 // see hci_run 4871 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4872 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4873 break; 4874 default: 4875 btstack_assert(false); 4876 break; 4877 } 4878 return ERROR_CODE_SUCCESS; 4879 } 4880 4881 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4882 switch (power_mode){ 4883 case HCI_POWER_ON: 4884 hci_power_enter_initializing_state(); 4885 break; 4886 case HCI_POWER_OFF: 4887 hci_power_enter_halting_state(); 4888 break; 4889 case HCI_POWER_SLEEP: 4890 // do nothing 4891 break; 4892 default: 4893 btstack_assert(false); 4894 break; 4895 } 4896 return ERROR_CODE_SUCCESS; 4897 } 4898 4899 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4900 int err; 4901 switch (power_mode){ 4902 case HCI_POWER_ON: 4903 err = hci_power_control_wake(); 4904 if (err) return err; 4905 hci_power_enter_initializing_state(); 4906 break; 4907 case HCI_POWER_OFF: 4908 hci_power_enter_halting_state(); 4909 break; 4910 case HCI_POWER_SLEEP: 4911 // do nothing 4912 break; 4913 default: 4914 btstack_assert(false); 4915 break; 4916 } 4917 return ERROR_CODE_SUCCESS; 4918 } 4919 4920 int hci_power_control(HCI_POWER_MODE power_mode){ 4921 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4922 int err = 0; 4923 switch (hci_stack->state){ 4924 case HCI_STATE_OFF: 4925 err = hci_power_control_state_off(power_mode); 4926 break; 4927 case HCI_STATE_INITIALIZING: 4928 err = hci_power_control_state_initializing(power_mode); 4929 break; 4930 case HCI_STATE_WORKING: 4931 err = hci_power_control_state_working(power_mode); 4932 break; 4933 case HCI_STATE_HALTING: 4934 err = hci_power_control_state_halting(power_mode); 4935 break; 4936 case HCI_STATE_FALLING_ASLEEP: 4937 err = hci_power_control_state_falling_asleep(power_mode); 4938 break; 4939 case HCI_STATE_SLEEPING: 4940 err = hci_power_control_state_sleeping(power_mode); 4941 break; 4942 default: 4943 btstack_assert(false); 4944 break; 4945 } 4946 if (err != 0){ 4947 return err; 4948 } 4949 4950 // create internal event 4951 hci_emit_state(); 4952 4953 // trigger next/first action 4954 hci_run(); 4955 4956 return 0; 4957 } 4958 4959 4960 static void hci_halting_run(void) { 4961 4962 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4963 4964 hci_connection_t *connection; 4965 #ifdef ENABLE_BLE 4966 #ifdef ENABLE_LE_PERIPHERAL 4967 bool stop_advertismenets; 4968 #endif 4969 #endif 4970 4971 switch (hci_stack->substate) { 4972 case HCI_HALTING_CLASSIC_STOP: 4973 #ifdef ENABLE_CLASSIC 4974 if (!hci_can_send_command_packet_now()) return; 4975 4976 if (hci_stack->connectable || hci_stack->discoverable){ 4977 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4978 hci_send_cmd(&hci_write_scan_enable, 0); 4979 return; 4980 } 4981 #endif 4982 /* fall through */ 4983 4984 case HCI_HALTING_LE_ADV_STOP: 4985 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4986 4987 #ifdef ENABLE_BLE 4988 #ifdef ENABLE_LE_PERIPHERAL 4989 if (!hci_can_send_command_packet_now()) return; 4990 4991 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4992 4993 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4994 if (hci_extended_advertising_supported()){ 4995 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4996 btstack_linked_list_iterator_t it; 4997 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4998 // stop all periodic advertisements and check if an extended set is active 4999 while (btstack_linked_list_iterator_has_next(&it)){ 5000 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5001 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5002 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5003 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5004 return; 5005 } 5006 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5007 stop_advertismenets = true; 5008 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5009 } 5010 } 5011 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5012 if (stop_advertismenets){ 5013 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5014 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5015 return; 5016 } 5017 } 5018 else 5019 #else /* ENABLE_LE_PERIPHERAL */ 5020 { 5021 if (stop_advertismenets) { 5022 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5023 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5024 return; 5025 } 5026 } 5027 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5028 #endif /* ENABLE_LE_PERIPHERAL */ 5029 #endif /* ENABLE_BLE */ 5030 5031 /* fall through */ 5032 5033 case HCI_HALTING_LE_SCAN_STOP: 5034 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5035 if (!hci_can_send_command_packet_now()) return; 5036 5037 #ifdef ENABLE_BLE 5038 #ifdef ENABLE_LE_CENTRAL 5039 if (hci_stack->le_scanning_active){ 5040 hci_le_scan_stop(); 5041 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5042 return; 5043 } 5044 #endif 5045 #endif 5046 5047 /* fall through */ 5048 5049 case HCI_HALTING_DISCONNECT_ALL: 5050 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5051 if (!hci_can_send_command_packet_now()) return; 5052 5053 // close all open connections 5054 connection = (hci_connection_t *) hci_stack->connections; 5055 if (connection) { 5056 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5057 5058 // check state 5059 if (connection->state == SENT_DISCONNECT) return; 5060 connection->state = SENT_DISCONNECT; 5061 5062 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 5063 5064 // finally, send the disconnect command 5065 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5066 return; 5067 } 5068 5069 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5070 // stop BIGs and BIG Syncs 5071 if (hci_stack->le_audio_bigs != NULL){ 5072 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5073 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5074 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5075 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5076 return; 5077 } 5078 if (hci_stack->le_audio_big_syncs != NULL){ 5079 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5080 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5081 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5082 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5083 return; 5084 } 5085 #endif 5086 5087 btstack_run_loop_remove_timer(&hci_stack->timeout); 5088 5089 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5090 log_info("HCI_STATE_HALTING: wait 50 ms"); 5091 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5092 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5093 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5094 btstack_run_loop_add_timer(&hci_stack->timeout); 5095 break; 5096 5097 case HCI_HALTING_CLOSE: 5098 // close left over connections (that had not been properly closed before) 5099 hci_discard_connections(); 5100 5101 log_info("HCI_STATE_HALTING, calling off"); 5102 5103 // switch mode 5104 hci_power_control_off(); 5105 5106 log_info("HCI_STATE_HALTING, emitting state"); 5107 hci_emit_state(); 5108 log_info("HCI_STATE_HALTING, done"); 5109 break; 5110 5111 case HCI_HALTING_W4_CLOSE_TIMER: 5112 // keep waiting 5113 5114 break; 5115 default: 5116 break; 5117 } 5118 }; 5119 5120 static void hci_falling_asleep_run(void){ 5121 hci_connection_t * connection; 5122 switch(hci_stack->substate) { 5123 case HCI_FALLING_ASLEEP_DISCONNECT: 5124 log_info("HCI_STATE_FALLING_ASLEEP"); 5125 // close all open connections 5126 connection = (hci_connection_t *) hci_stack->connections; 5127 if (connection){ 5128 5129 // send disconnect 5130 if (!hci_can_send_command_packet_now()) return; 5131 5132 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5133 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5134 5135 // send disconnected event right away - causes higher layer connections to get closed, too. 5136 hci_shutdown_connection(connection); 5137 return; 5138 } 5139 5140 if (hci_classic_supported()){ 5141 // disable page and inquiry scan 5142 if (!hci_can_send_command_packet_now()) return; 5143 5144 log_info("HCI_STATE_HALTING, disabling inq scans"); 5145 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5146 5147 // continue in next sub state 5148 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5149 break; 5150 } 5151 5152 /* fall through */ 5153 5154 case HCI_FALLING_ASLEEP_COMPLETE: 5155 log_info("HCI_STATE_HALTING, calling sleep"); 5156 // switch mode 5157 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5158 hci_emit_state(); 5159 break; 5160 5161 default: 5162 break; 5163 } 5164 } 5165 5166 #ifdef ENABLE_CLASSIC 5167 5168 static void hci_update_scan_enable(void){ 5169 // 2 = page scan, 1 = inq scan 5170 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5171 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5172 hci_run(); 5173 } 5174 5175 void gap_discoverable_control(uint8_t enable){ 5176 if (enable) enable = 1; // normalize argument 5177 5178 if (hci_stack->discoverable == enable){ 5179 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5180 return; 5181 } 5182 5183 hci_stack->discoverable = enable; 5184 hci_update_scan_enable(); 5185 } 5186 5187 void gap_connectable_control(uint8_t enable){ 5188 if (enable) enable = 1; // normalize argument 5189 5190 // don't emit event 5191 if (hci_stack->connectable == enable) return; 5192 5193 hci_stack->connectable = enable; 5194 hci_update_scan_enable(); 5195 } 5196 #endif 5197 5198 void gap_local_bd_addr(bd_addr_t address_buffer){ 5199 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5200 } 5201 5202 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5203 static void hci_host_num_completed_packets(void){ 5204 5205 // create packet manually as arrays are not supported and num_commands should not get reduced 5206 hci_reserve_packet_buffer(); 5207 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5208 5209 uint16_t size = 0; 5210 uint16_t num_handles = 0; 5211 packet[size++] = 0x35; 5212 packet[size++] = 0x0c; 5213 size++; // skip param len 5214 size++; // skip num handles 5215 5216 // add { handle, packets } entries 5217 btstack_linked_item_t * it; 5218 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5219 hci_connection_t * connection = (hci_connection_t *) it; 5220 if (connection->num_packets_completed){ 5221 little_endian_store_16(packet, size, connection->con_handle); 5222 size += 2; 5223 little_endian_store_16(packet, size, connection->num_packets_completed); 5224 size += 2; 5225 // 5226 num_handles++; 5227 connection->num_packets_completed = 0; 5228 } 5229 } 5230 5231 packet[2] = size - 3; 5232 packet[3] = num_handles; 5233 5234 hci_stack->host_completed_packets = 0; 5235 5236 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5237 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5238 5239 // release packet buffer for synchronous transport implementations 5240 if (hci_transport_synchronous()){ 5241 hci_release_packet_buffer(); 5242 hci_emit_transport_packet_sent(); 5243 } 5244 } 5245 #endif 5246 5247 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5248 UNUSED(ds); 5249 hci_stack->substate = HCI_HALTING_CLOSE; 5250 // allow packet handlers to defer final shutdown 5251 hci_emit_state(); 5252 hci_run(); 5253 } 5254 5255 static bool hci_run_acl_fragments(void){ 5256 if (hci_stack->acl_fragmentation_total_size > 0u) { 5257 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5258 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5259 if (connection) { 5260 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5261 hci_send_acl_packet_fragments(connection); 5262 return true; 5263 } 5264 } else { 5265 // connection gone -> discard further fragments 5266 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5267 hci_stack->acl_fragmentation_total_size = 0; 5268 hci_stack->acl_fragmentation_pos = 0; 5269 } 5270 } 5271 return false; 5272 } 5273 5274 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5275 static bool hci_run_iso_fragments(void){ 5276 if (hci_stack->iso_fragmentation_total_size > 0u) { 5277 // TODO: flow control 5278 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5279 hci_send_iso_packet_fragments(); 5280 return true; 5281 } 5282 } 5283 return false; 5284 } 5285 #endif 5286 5287 #ifdef ENABLE_CLASSIC 5288 5289 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5290 static bool hci_classic_operation_active(void) { 5291 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5292 return true; 5293 } 5294 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5295 return true; 5296 } 5297 btstack_linked_item_t * it; 5298 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5299 hci_connection_t *connection = (hci_connection_t *) it; 5300 switch (connection->state) { 5301 case SENT_CREATE_CONNECTION: 5302 case SENT_CANCEL_CONNECTION: 5303 case SENT_DISCONNECT: 5304 return true; 5305 default: 5306 break; 5307 } 5308 } 5309 return false; 5310 } 5311 #endif 5312 5313 static bool hci_run_general_gap_classic(void){ 5314 5315 // assert stack is working and classic is active 5316 if (hci_classic_supported() == false) return false; 5317 if (hci_stack->state != HCI_STATE_WORKING) return false; 5318 5319 // decline incoming connections 5320 if (hci_stack->decline_reason){ 5321 uint8_t reason = hci_stack->decline_reason; 5322 hci_stack->decline_reason = 0; 5323 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5324 return true; 5325 } 5326 5327 if (hci_stack->gap_tasks_classic != 0){ 5328 hci_run_gap_tasks_classic(); 5329 return true; 5330 } 5331 5332 // start/stop inquiry 5333 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5334 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5335 if (hci_classic_operation_active() == false) 5336 #endif 5337 { 5338 uint8_t duration = hci_stack->inquiry_state; 5339 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5340 if (hci_stack->inquiry_max_period_length != 0){ 5341 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); 5342 } else { 5343 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5344 } 5345 return true; 5346 } 5347 } 5348 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5349 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5350 hci_send_cmd(&hci_inquiry_cancel); 5351 return true; 5352 } 5353 5354 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5355 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5356 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5357 return true; 5358 } 5359 5360 // remote name request 5361 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5362 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5363 if (hci_classic_operation_active() == false) 5364 #endif 5365 { 5366 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5367 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5368 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5369 return true; 5370 } 5371 } 5372 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5373 // Local OOB data 5374 if (hci_stack->classic_read_local_oob_data){ 5375 hci_stack->classic_read_local_oob_data = false; 5376 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5377 hci_send_cmd(&hci_read_local_extended_oob_data); 5378 } else { 5379 hci_send_cmd(&hci_read_local_oob_data); 5380 } 5381 } 5382 #endif 5383 // pairing 5384 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5385 uint8_t state = hci_stack->gap_pairing_state; 5386 uint8_t pin_code[16]; 5387 switch (state){ 5388 case GAP_PAIRING_STATE_SEND_PIN: 5389 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5390 memset(pin_code, 0, 16); 5391 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5392 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5393 break; 5394 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5395 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5396 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5397 break; 5398 case GAP_PAIRING_STATE_SEND_PASSKEY: 5399 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5400 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5401 break; 5402 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5403 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5404 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5405 break; 5406 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5407 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5408 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5409 break; 5410 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5411 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5412 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5413 break; 5414 default: 5415 break; 5416 } 5417 return true; 5418 } 5419 return false; 5420 } 5421 #endif 5422 5423 #ifdef ENABLE_BLE 5424 5425 #ifdef ENABLE_LE_CENTRAL 5426 static void hci_le_scan_stop(void){ 5427 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5428 if (hci_extended_advertising_supported()) { 5429 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5430 } else 5431 #endif 5432 { 5433 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5434 } 5435 } 5436 #endif 5437 5438 #ifdef ENABLE_LE_PERIPHERAL 5439 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5440 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5441 uint8_t operation = 0; 5442 if (pos == 0){ 5443 // first fragment or complete data 5444 operation |= 1; 5445 } 5446 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5447 // last fragment or complete data 5448 operation |= 2; 5449 } 5450 return operation; 5451 } 5452 #endif 5453 #endif 5454 5455 static bool hci_run_general_gap_le(void){ 5456 5457 btstack_linked_list_iterator_t lit; 5458 5459 // Phase 1: collect what to stop 5460 5461 #ifdef ENABLE_LE_CENTRAL 5462 bool scanning_stop = false; 5463 bool connecting_stop = false; 5464 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5465 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5466 bool periodic_sync_stop = false; 5467 #endif 5468 #endif 5469 #endif 5470 5471 #ifdef ENABLE_LE_PERIPHERAL 5472 bool advertising_stop = false; 5473 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5474 le_advertising_set_t * advertising_stop_set = NULL; 5475 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5476 bool periodic_advertising_stop = false; 5477 #endif 5478 #endif 5479 #endif 5480 5481 // check if own address changes 5482 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5483 5484 // check if whitelist needs modification 5485 bool whitelist_modification_pending = false; 5486 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5487 while (btstack_linked_list_iterator_has_next(&lit)){ 5488 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5489 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5490 whitelist_modification_pending = true; 5491 break; 5492 } 5493 } 5494 5495 // check if resolving list needs modification 5496 bool resolving_list_modification_pending = false; 5497 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5498 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5499 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5500 resolving_list_modification_pending = true; 5501 } 5502 #endif 5503 5504 #ifdef ENABLE_LE_CENTRAL 5505 5506 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5507 // check if periodic advertiser list needs modification 5508 bool periodic_list_modification_pending = false; 5509 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5510 while (btstack_linked_list_iterator_has_next(&lit)){ 5511 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5512 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5513 periodic_list_modification_pending = true; 5514 break; 5515 } 5516 } 5517 #endif 5518 5519 // scanning control 5520 if (hci_stack->le_scanning_active) { 5521 // stop if: 5522 // - parameter change required 5523 // - it's disabled 5524 // - whitelist change required but used for scanning 5525 // - resolving list modified 5526 // - own address changes 5527 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5528 if ((hci_stack->le_scanning_param_update) || 5529 !hci_stack->le_scanning_enabled || 5530 (scanning_uses_whitelist && whitelist_modification_pending) || 5531 resolving_list_modification_pending || 5532 random_address_change){ 5533 5534 scanning_stop = true; 5535 } 5536 } 5537 5538 // connecting control 5539 bool connecting_with_whitelist; 5540 switch (hci_stack->le_connecting_state){ 5541 case LE_CONNECTING_DIRECT: 5542 case LE_CONNECTING_WHITELIST: 5543 // stop connecting if: 5544 // - connecting uses white and whitelist modification pending 5545 // - if it got disabled 5546 // - resolving list modified 5547 // - own address changes 5548 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5549 if ((connecting_with_whitelist && whitelist_modification_pending) || 5550 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5551 resolving_list_modification_pending || 5552 random_address_change) { 5553 5554 connecting_stop = true; 5555 } 5556 break; 5557 default: 5558 break; 5559 } 5560 5561 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5562 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5563 // periodic sync control 5564 bool sync_with_advertiser_list; 5565 switch(hci_stack->le_periodic_sync_state){ 5566 case LE_CONNECTING_DIRECT: 5567 case LE_CONNECTING_WHITELIST: 5568 // stop sync if: 5569 // - sync with advertiser list and advertiser list modification pending 5570 // - if it got disabled 5571 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5572 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5573 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5574 periodic_sync_stop = true; 5575 } 5576 break; 5577 default: 5578 break; 5579 } 5580 #endif 5581 #endif 5582 5583 #endif /* ENABLE_LE_CENTRAL */ 5584 5585 #ifdef ENABLE_LE_PERIPHERAL 5586 // le advertisement control 5587 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5588 // stop if: 5589 // - parameter change required 5590 // - random address used in advertising and changes 5591 // - it's disabled 5592 // - whitelist change required but used for advertisement filter policy 5593 // - resolving list modified 5594 // - own address changes 5595 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5596 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5597 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5598 if (advertising_change || 5599 (advertising_uses_random_address && random_address_change) || 5600 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5601 (advertising_uses_whitelist && whitelist_modification_pending) || 5602 resolving_list_modification_pending || 5603 random_address_change) { 5604 5605 advertising_stop = true; 5606 } 5607 } 5608 5609 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5610 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5611 btstack_linked_list_iterator_t it; 5612 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5613 while (btstack_linked_list_iterator_has_next(&it)){ 5614 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5615 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5616 // stop if: 5617 // - parameter change required 5618 // - random address used in connectable advertising and changes 5619 // - it's disabled 5620 // - whitelist change required but used for advertisement filter policy 5621 // - resolving list modified 5622 // - own address changes 5623 // - advertisement set will be removed 5624 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5625 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5626 bool advertising_uses_random_address = 5627 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5628 advertising_connectable; 5629 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5630 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5631 bool advertising_set_random_address_change = 5632 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5633 bool advertising_set_will_be_removed = 5634 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5635 if (advertising_parameter_change || 5636 (advertising_uses_random_address && advertising_set_random_address_change) || 5637 (advertising_enabled == false) || 5638 (advertising_uses_whitelist && whitelist_modification_pending) || 5639 resolving_list_modification_pending || 5640 advertising_set_will_be_removed) { 5641 5642 advertising_stop = true; 5643 advertising_stop_set = advertising_set; 5644 break; 5645 } 5646 } 5647 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5648 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5649 // stop if: 5650 // - it's disabled 5651 // - parameter change required 5652 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5653 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5654 if ((periodic_enabled == false) || periodic_parameter_change){ 5655 periodic_advertising_stop = true; 5656 advertising_stop_set = advertising_set; 5657 } 5658 } 5659 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5660 } 5661 } 5662 #endif 5663 5664 #endif 5665 5666 5667 // Phase 2: stop everything that should be off during modifications 5668 5669 5670 // 2.1 Outgoing connection 5671 #ifdef ENABLE_LE_CENTRAL 5672 if (connecting_stop){ 5673 hci_send_cmd(&hci_le_create_connection_cancel); 5674 return true; 5675 } 5676 #endif 5677 5678 // 2.2 Scanning 5679 #ifdef ENABLE_LE_CENTRAL 5680 if (scanning_stop){ 5681 hci_stack->le_scanning_active = false; 5682 hci_le_scan_stop(); 5683 return true; 5684 } 5685 5686 // 2.3 Periodic Sync 5687 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5688 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5689 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5690 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5691 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5692 return true; 5693 } 5694 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5695 if (periodic_sync_stop){ 5696 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5697 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5698 return true; 5699 } 5700 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5701 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5702 #endif /* ENABLE_LE_CENTRAL */ 5703 5704 // 2.4 Advertising: legacy, extended, periodic 5705 #ifdef ENABLE_LE_PERIPHERAL 5706 if (advertising_stop){ 5707 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5708 if (hci_extended_advertising_supported()) { 5709 uint8_t advertising_stop_handle; 5710 if (advertising_stop_set != NULL){ 5711 advertising_stop_handle = advertising_stop_set->advertising_handle; 5712 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5713 } else { 5714 advertising_stop_handle = 0; 5715 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5716 } 5717 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5718 const uint16_t durations[] = { 0 }; 5719 const uint16_t max_events[] = { 0 }; 5720 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5721 } else 5722 #endif 5723 { 5724 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5725 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5726 } 5727 return true; 5728 } 5729 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5730 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5731 if (periodic_advertising_stop){ 5732 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5733 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5734 return true; 5735 } 5736 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5737 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5738 #endif /* ENABLE_LE_PERIPHERAL */ 5739 5740 5741 // Phase 3: modify 5742 5743 if (random_address_change){ 5744 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5745 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5746 if (hci_extended_advertising_supported()) { 5747 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5748 } 5749 #endif 5750 { 5751 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5752 } 5753 return true; 5754 } 5755 5756 #ifdef ENABLE_LE_CENTRAL 5757 if (hci_stack->le_scanning_param_update){ 5758 hci_stack->le_scanning_param_update = false; 5759 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5760 if (hci_extended_advertising_supported()){ 5761 // prepare arrays for all PHYs 5762 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5763 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5764 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5765 uint8_t scanning_phys = 1; // LE 1M PHY 5766 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5767 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5768 } else 5769 #endif 5770 { 5771 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5772 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5773 } 5774 return true; 5775 } 5776 #endif 5777 5778 #ifdef ENABLE_LE_PERIPHERAL 5779 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5780 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5781 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5782 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5783 if (hci_extended_advertising_supported()){ 5784 // map advertisment type to advertising event properties 5785 uint16_t adv_event_properties = 0; 5786 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5787 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5788 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5789 } 5790 hci_stack->le_advertising_set_in_current_command = 0; 5791 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5792 0, 5793 adv_event_properties, 5794 hci_stack->le_advertisements_interval_min, 5795 hci_stack->le_advertisements_interval_max, 5796 hci_stack->le_advertisements_channel_map, 5797 hci_stack->le_advertisements_own_addr_type, 5798 hci_stack->le_advertisements_direct_address_type, 5799 hci_stack->le_advertisements_direct_address, 5800 hci_stack->le_advertisements_filter_policy, 5801 0x7f, // tx power: no preference 5802 0x01, // primary adv phy: LE 1M 5803 0, // secondary adv max skip 5804 0, // secondary adv phy 5805 0, // adv sid 5806 0 // scan request notification 5807 ); 5808 } 5809 #endif 5810 { 5811 hci_send_cmd(&hci_le_set_advertising_parameters, 5812 hci_stack->le_advertisements_interval_min, 5813 hci_stack->le_advertisements_interval_max, 5814 hci_stack->le_advertisements_type, 5815 hci_stack->le_advertisements_own_addr_type, 5816 hci_stack->le_advertisements_direct_address_type, 5817 hci_stack->le_advertisements_direct_address, 5818 hci_stack->le_advertisements_channel_map, 5819 hci_stack->le_advertisements_filter_policy); 5820 } 5821 return true; 5822 } 5823 5824 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5825 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5826 uint8_t adv_data_clean[31]; 5827 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5828 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5829 hci_stack->le_advertisements_data_len); 5830 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5831 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5832 if (hci_extended_advertising_supported()){ 5833 hci_stack->le_advertising_set_in_current_command = 0; 5834 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5835 } else 5836 #endif 5837 { 5838 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5839 } 5840 return true; 5841 } 5842 5843 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5844 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5845 uint8_t scan_data_clean[31]; 5846 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5847 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5848 hci_stack->le_scan_response_data_len); 5849 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5850 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5851 if (hci_extended_advertising_supported()){ 5852 hci_stack->le_advertising_set_in_current_command = 0; 5853 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5854 } else 5855 #endif 5856 { 5857 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5858 } 5859 return true; 5860 } 5861 5862 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5863 if (hci_extended_advertising_supported()) { 5864 btstack_linked_list_iterator_t it; 5865 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5866 while (btstack_linked_list_iterator_has_next(&it)){ 5867 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5868 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5869 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5870 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5871 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5872 return true; 5873 } 5874 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5875 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5876 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5877 return true; 5878 } 5879 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5880 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5881 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5882 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5883 advertising_set->advertising_handle, 5884 advertising_set->extended_params.advertising_event_properties, 5885 advertising_set->extended_params.primary_advertising_interval_min, 5886 advertising_set->extended_params.primary_advertising_interval_max, 5887 advertising_set->extended_params.primary_advertising_channel_map, 5888 advertising_set->extended_params.own_address_type, 5889 advertising_set->extended_params.peer_address_type, 5890 advertising_set->extended_params.peer_address, 5891 advertising_set->extended_params.advertising_filter_policy, 5892 advertising_set->extended_params.advertising_tx_power, 5893 advertising_set->extended_params.primary_advertising_phy, 5894 advertising_set->extended_params.secondary_advertising_max_skip, 5895 advertising_set->extended_params.secondary_advertising_phy, 5896 advertising_set->extended_params.advertising_sid, 5897 advertising_set->extended_params.scan_request_notification_enable 5898 ); 5899 return true; 5900 } 5901 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5902 uint16_t pos = advertising_set->adv_data_pos; 5903 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5904 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5905 if ((operation & 0x02) != 0){ 5906 // last fragment or complete data 5907 operation |= 2; 5908 advertising_set->adv_data_pos = 0; 5909 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5910 } else { 5911 advertising_set->adv_data_pos += data_to_upload; 5912 } 5913 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5914 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5915 return true; 5916 } 5917 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5918 uint16_t pos = advertising_set->scan_data_pos; 5919 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5920 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5921 if ((operation & 0x02) != 0){ 5922 advertising_set->scan_data_pos = 0; 5923 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5924 } else { 5925 advertising_set->scan_data_pos += data_to_upload; 5926 } 5927 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5928 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5929 return true; 5930 } 5931 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5932 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5933 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5934 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5935 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5936 advertising_set->advertising_handle, 5937 advertising_set->periodic_params.periodic_advertising_interval_min, 5938 advertising_set->periodic_params.periodic_advertising_interval_max, 5939 advertising_set->periodic_params.periodic_advertising_properties); 5940 return true; 5941 } 5942 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5943 uint16_t pos = advertising_set->periodic_data_pos; 5944 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5945 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5946 if ((operation & 0x02) != 0){ 5947 // last fragment or complete data 5948 operation |= 2; 5949 advertising_set->periodic_data_pos = 0; 5950 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5951 } else { 5952 advertising_set->periodic_data_pos += data_to_upload; 5953 } 5954 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5955 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5956 return true; 5957 } 5958 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5959 } 5960 } 5961 #endif 5962 5963 #endif 5964 5965 #ifdef ENABLE_LE_CENTRAL 5966 // if connect with whitelist was active and is not cancelled yet, wait until next time 5967 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5968 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5969 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5970 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5971 #endif 5972 #endif 5973 5974 // LE Whitelist Management 5975 if (whitelist_modification_pending){ 5976 // add/remove entries 5977 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5978 while (btstack_linked_list_iterator_has_next(&lit)){ 5979 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5980 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5981 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5982 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5983 return true; 5984 } 5985 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5986 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5987 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5988 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5989 return true; 5990 } 5991 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5992 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5993 btstack_memory_whitelist_entry_free(entry); 5994 } 5995 } 5996 } 5997 5998 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5999 // LE Resolving List Management 6000 if (resolving_list_supported) { 6001 uint16_t i; 6002 switch (hci_stack->le_resolving_list_state) { 6003 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6004 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6005 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6006 return true; 6007 case LE_RESOLVING_LIST_READ_SIZE: 6008 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6009 hci_send_cmd(&hci_le_read_resolving_list_size); 6010 return true; 6011 case LE_RESOLVING_LIST_SEND_CLEAR: 6012 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 6013 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6014 sizeof(hci_stack->le_resolving_list_add_entries)); 6015 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6016 sizeof(hci_stack->le_resolving_list_remove_entries)); 6017 hci_send_cmd(&hci_le_clear_resolving_list); 6018 return true; 6019 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 6020 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6021 uint8_t offset = i >> 3; 6022 uint8_t mask = 1 << (i & 7); 6023 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6024 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6025 bd_addr_t peer_identity_addreses; 6026 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6027 sm_key_t peer_irk; 6028 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6029 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6030 6031 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6032 // trigger whitelist entry 'update' (work around for controller bug) 6033 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6034 while (btstack_linked_list_iterator_has_next(&lit)) { 6035 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6036 if (entry->address_type != peer_identity_addr_type) continue; 6037 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6038 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6039 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6040 } 6041 #endif 6042 6043 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6044 peer_identity_addreses); 6045 return true; 6046 } 6047 6048 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 6049 6050 /* fall through */ 6051 6052 case LE_RESOLVING_LIST_ADD_ENTRIES: 6053 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6054 uint8_t offset = i >> 3; 6055 uint8_t mask = 1 << (i & 7); 6056 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6057 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6058 bd_addr_t peer_identity_addreses; 6059 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6060 sm_key_t peer_irk; 6061 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6062 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6063 if (btstack_is_null(peer_irk, 16)) continue; 6064 const uint8_t *local_irk = gap_get_persistent_irk(); 6065 // command uses format specifier 'P' that stores 16-byte value without flip 6066 uint8_t local_irk_flipped[16]; 6067 uint8_t peer_irk_flipped[16]; 6068 reverse_128(local_irk, local_irk_flipped); 6069 reverse_128(peer_irk, peer_irk_flipped); 6070 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6071 peer_irk_flipped, local_irk_flipped); 6072 return true; 6073 } 6074 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6075 break; 6076 6077 default: 6078 break; 6079 } 6080 } 6081 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6082 #endif 6083 6084 #ifdef ENABLE_LE_CENTRAL 6085 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6086 // LE Whitelist Management 6087 if (periodic_list_modification_pending){ 6088 // add/remove entries 6089 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6090 while (btstack_linked_list_iterator_has_next(&lit)){ 6091 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6092 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6093 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6094 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6095 return true; 6096 } 6097 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6098 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6099 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6100 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6101 return true; 6102 } 6103 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6104 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6105 btstack_memory_periodic_advertiser_list_entry_free(entry); 6106 } 6107 } 6108 } 6109 #endif 6110 #endif 6111 6112 // post-pone all actions until stack is fully working 6113 if (hci_stack->state != HCI_STATE_WORKING) return false; 6114 6115 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6116 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6117 6118 // Phase 4: restore state 6119 6120 #ifdef ENABLE_LE_CENTRAL 6121 // re-start scanning 6122 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6123 hci_stack->le_scanning_active = true; 6124 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6125 if (hci_extended_advertising_supported()){ 6126 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 6127 } else 6128 #endif 6129 { 6130 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 6131 } 6132 return true; 6133 } 6134 #endif 6135 6136 #ifdef ENABLE_LE_CENTRAL 6137 // re-start connecting 6138 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6139 bd_addr_t null_addr; 6140 memset(null_addr, 0, 6); 6141 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6142 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6143 hci_send_cmd(&hci_le_create_connection, 6144 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 6145 hci_stack->le_connection_scan_window, // scan interval: 30 ms 6146 1, // use whitelist 6147 0, // peer address type 6148 null_addr, // peer bd addr 6149 hci_stack->le_connection_own_addr_type, // our addr type: 6150 hci_stack->le_connection_interval_min, // conn interval min 6151 hci_stack->le_connection_interval_max, // conn interval max 6152 hci_stack->le_connection_latency, // conn latency 6153 hci_stack->le_supervision_timeout, // conn latency 6154 hci_stack->le_minimum_ce_length, // min ce length 6155 hci_stack->le_maximum_ce_length // max ce length 6156 ); 6157 return true; 6158 } 6159 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6160 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6161 switch(hci_stack->le_periodic_sync_request){ 6162 case LE_CONNECTING_DIRECT: 6163 case LE_CONNECTING_WHITELIST: 6164 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6165 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6166 hci_stack->le_periodic_sync_options, 6167 hci_stack->le_periodic_sync_advertising_sid, 6168 hci_stack->le_periodic_sync_advertiser_address_type, 6169 hci_stack->le_periodic_sync_advertiser_address, 6170 hci_stack->le_periodic_sync_skip, 6171 hci_stack->le_periodic_sync_timeout, 6172 hci_stack->le_periodic_sync_cte_type); 6173 return true; 6174 default: 6175 break; 6176 } 6177 } 6178 #endif 6179 #endif 6180 6181 #ifdef ENABLE_LE_PERIPHERAL 6182 // re-start advertising 6183 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6184 // check if advertisements should be enabled given 6185 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6186 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6187 6188 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6189 if (hci_extended_advertising_supported()){ 6190 const uint8_t advertising_handles[] = { 0 }; 6191 const uint16_t durations[] = { 0 }; 6192 const uint16_t max_events[] = { 0 }; 6193 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6194 } else 6195 #endif 6196 { 6197 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6198 } 6199 return true; 6200 } 6201 6202 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6203 if (hci_extended_advertising_supported()) { 6204 btstack_linked_list_iterator_t it; 6205 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6206 while (btstack_linked_list_iterator_has_next(&it)) { 6207 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6208 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6209 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6210 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6211 const uint16_t durations[] = { advertising_set->enable_timeout }; 6212 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6213 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6214 return true; 6215 } 6216 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6217 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6218 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6219 uint8_t enable = 1; 6220 if (advertising_set->periodic_include_adi){ 6221 enable |= 2; 6222 } 6223 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6224 return true; 6225 } 6226 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6227 } 6228 } 6229 #endif 6230 #endif 6231 6232 return false; 6233 } 6234 6235 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6236 static bool hci_run_iso_tasks(void){ 6237 btstack_linked_list_iterator_t it; 6238 6239 if (hci_stack->iso_active_operation_group_id != 0xff) { 6240 return false; 6241 } 6242 6243 // BIG 6244 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6245 while (btstack_linked_list_iterator_has_next(&it)){ 6246 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6247 switch (big->state){ 6248 case LE_AUDIO_BIG_STATE_CREATE: 6249 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6250 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6251 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6252 hci_send_cmd(&hci_le_create_big, 6253 big->params->big_handle, 6254 big->params->advertising_handle, 6255 big->params->num_bis, 6256 big->params->sdu_interval_us, 6257 big->params->max_sdu, 6258 big->params->max_transport_latency_ms, 6259 big->params->rtn, 6260 big->params->phy, 6261 big->params->packing, 6262 big->params->framing, 6263 big->params->encryption, 6264 big->params->broadcast_code); 6265 return true; 6266 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6267 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6268 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); 6269 return true; 6270 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6271 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6272 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6273 return true; 6274 case LE_AUDIO_BIG_STATE_TERMINATE: 6275 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6276 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6277 return true; 6278 default: 6279 break; 6280 } 6281 } 6282 6283 // BIG Sync 6284 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6285 while (btstack_linked_list_iterator_has_next(&it)){ 6286 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6287 switch (big_sync->state){ 6288 case LE_AUDIO_BIG_STATE_CREATE: 6289 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6290 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6291 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6292 hci_send_cmd(&hci_le_big_create_sync, 6293 big_sync->params->big_handle, 6294 big_sync->params->sync_handle, 6295 big_sync->params->encryption, 6296 big_sync->params->broadcast_code, 6297 big_sync->params->mse, 6298 big_sync->params->big_sync_timeout_10ms, 6299 big_sync->params->num_bis, 6300 big_sync->params->bis_indices); 6301 return true; 6302 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6303 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6304 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); 6305 return true; 6306 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6307 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6308 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6309 return true; 6310 case LE_AUDIO_BIG_STATE_TERMINATE: 6311 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6312 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6313 return true; 6314 default: 6315 break; 6316 } 6317 } 6318 6319 // CIG 6320 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6321 while (btstack_linked_list_iterator_has_next(&it)) { 6322 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6323 uint8_t i; 6324 // Set CIG Parameters 6325 uint8_t cis_id[MAX_NR_CIS]; 6326 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6327 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6328 uint8_t phy_c_to_p[MAX_NR_CIS]; 6329 uint8_t phy_p_to_c[MAX_NR_CIS]; 6330 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6331 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6332 switch (cig->state) { 6333 case LE_AUDIO_CIG_STATE_CREATE: 6334 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6335 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6336 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6337 le_audio_cig_params_t * params = cig->params; 6338 for (i = 0; i < params->num_cis; i++) { 6339 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6340 cis_id[i] = cis_params->cis_id; 6341 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6342 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6343 phy_c_to_p[i] = cis_params->phy_c_to_p; 6344 phy_p_to_c[i] = cis_params->phy_p_to_c; 6345 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6346 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6347 } 6348 hci_send_cmd(&hci_le_set_cig_parameters, 6349 cig->cig_id, 6350 params->sdu_interval_c_to_p, 6351 params->sdu_interval_p_to_c, 6352 params->worst_case_sca, 6353 params->packing, 6354 params->framing, 6355 params->max_transport_latency_c_to_p, 6356 params->max_transport_latency_p_to_c, 6357 params->num_cis, 6358 cis_id, 6359 max_sdu_c_to_p, 6360 max_sdu_p_to_c, 6361 phy_c_to_p, 6362 phy_p_to_c, 6363 rtn_c_to_p, 6364 rtn_p_to_c 6365 ); 6366 return true; 6367 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6368 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6369 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6370 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6371 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6372 return true; 6373 default: 6374 break; 6375 } 6376 } 6377 6378 return false; 6379 } 6380 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6381 #endif 6382 6383 static bool hci_run_general_pending_commands(void){ 6384 btstack_linked_item_t * it; 6385 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6386 hci_connection_t * connection = (hci_connection_t *) it; 6387 6388 switch(connection->state){ 6389 case SEND_CREATE_CONNECTION: 6390 switch(connection->address_type){ 6391 #ifdef ENABLE_CLASSIC 6392 case BD_ADDR_TYPE_ACL: 6393 log_info("sending hci_create_connection"); 6394 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6395 break; 6396 #endif 6397 default: 6398 #ifdef ENABLE_BLE 6399 #ifdef ENABLE_LE_CENTRAL 6400 log_info("sending hci_le_create_connection"); 6401 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6402 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6403 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6404 if (hci_extended_advertising_supported()) { 6405 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6406 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6407 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6408 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6409 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6410 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6411 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6412 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6413 hci_send_cmd(&hci_le_extended_create_connection, 6414 0, // don't use whitelist 6415 hci_stack->le_connection_own_addr_type, // our addr type: 6416 connection->address_type, // peer address type 6417 connection->address, // peer bd addr 6418 1, // initiating PHY - 1M 6419 le_connection_scan_interval, // conn scan interval 6420 le_connection_scan_window, // conn scan windows 6421 le_connection_interval_min, // conn interval min 6422 le_connection_interval_max, // conn interval max 6423 le_connection_latency, // conn latency 6424 le_supervision_timeout, // conn latency 6425 le_minimum_ce_length, // min ce length 6426 le_maximum_ce_length // max ce length 6427 ); } 6428 else 6429 #endif 6430 { 6431 hci_send_cmd(&hci_le_create_connection, 6432 hci_stack->le_connection_scan_interval, // conn scan interval 6433 hci_stack->le_connection_scan_window, // conn scan windows 6434 0, // don't use whitelist 6435 connection->address_type, // peer address type 6436 connection->address, // peer bd addr 6437 hci_stack->le_connection_own_addr_type, // our addr type: 6438 hci_stack->le_connection_interval_min, // conn interval min 6439 hci_stack->le_connection_interval_max, // conn interval max 6440 hci_stack->le_connection_latency, // conn latency 6441 hci_stack->le_supervision_timeout, // conn latency 6442 hci_stack->le_minimum_ce_length, // min ce length 6443 hci_stack->le_maximum_ce_length // max ce length 6444 ); 6445 } 6446 connection->state = SENT_CREATE_CONNECTION; 6447 #endif 6448 #endif 6449 break; 6450 } 6451 return true; 6452 6453 #ifdef ENABLE_CLASSIC 6454 case RECEIVED_CONNECTION_REQUEST: 6455 connection->role = HCI_ROLE_SLAVE; 6456 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6457 log_info("sending hci_accept_connection_request"); 6458 connection->state = ACCEPTED_CONNECTION_REQUEST; 6459 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6460 return true; 6461 } 6462 break; 6463 #endif 6464 case SEND_DISCONNECT: 6465 connection->state = SENT_DISCONNECT; 6466 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6467 return true; 6468 6469 default: 6470 break; 6471 } 6472 6473 // no further commands if connection is about to get shut down 6474 if (connection->state == SENT_DISCONNECT) continue; 6475 6476 #ifdef ENABLE_CLASSIC 6477 6478 // Handling link key request requires remote supported features 6479 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6480 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6481 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6482 6483 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6484 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6485 if (have_link_key && security_level_sufficient){ 6486 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6487 } else { 6488 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6489 } 6490 return true; 6491 } 6492 6493 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6494 log_info("denying to pin request"); 6495 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6496 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6497 return true; 6498 } 6499 6500 // security assessment requires remote features 6501 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6502 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6503 hci_ssp_assess_security_on_io_cap_request(connection); 6504 // 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 6505 } 6506 6507 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6508 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6509 // set authentication requirements: 6510 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6511 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6512 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6513 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6514 authreq |= 1; 6515 } 6516 bool bonding = hci_stack->bondable; 6517 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6518 // if we have received IO Cap Response, we're in responder role 6519 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6520 if (bonding && !remote_bonding){ 6521 log_info("Remote not bonding, dropping local flag"); 6522 bonding = false; 6523 } 6524 } 6525 if (bonding){ 6526 if (connection->bonding_flags & BONDING_DEDICATED){ 6527 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6528 } else { 6529 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6530 } 6531 } 6532 uint8_t have_oob_data = 0; 6533 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6534 if (connection->classic_oob_c_192 != NULL){ 6535 have_oob_data |= 1; 6536 } 6537 if (connection->classic_oob_c_256 != NULL){ 6538 have_oob_data |= 2; 6539 } 6540 #endif 6541 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6542 return true; 6543 } 6544 6545 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6546 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6547 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6548 return true; 6549 } 6550 6551 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6552 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6553 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6554 const uint8_t zero[16] = { 0 }; 6555 const uint8_t * r_192 = zero; 6556 const uint8_t * c_192 = zero; 6557 const uint8_t * r_256 = zero; 6558 const uint8_t * c_256 = zero; 6559 // verify P-256 OOB 6560 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6561 c_256 = connection->classic_oob_c_256; 6562 if (connection->classic_oob_r_256 != NULL) { 6563 r_256 = connection->classic_oob_r_256; 6564 } 6565 } 6566 // verify P-192 OOB 6567 if ((connection->classic_oob_c_192 != NULL)) { 6568 c_192 = connection->classic_oob_c_192; 6569 if (connection->classic_oob_r_192 != NULL) { 6570 r_192 = connection->classic_oob_r_192; 6571 } 6572 } 6573 6574 // assess security 6575 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6576 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6577 if (need_level_4 && !can_reach_level_4){ 6578 log_info("Level 4 required, but not possible -> abort"); 6579 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6580 // send oob negative reply 6581 c_256 = NULL; 6582 c_192 = NULL; 6583 } 6584 6585 // Reply 6586 if (c_256 != zero) { 6587 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6588 } else if (c_192 != zero){ 6589 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6590 } else { 6591 hci_stack->classic_oob_con_handle = connection->con_handle; 6592 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6593 } 6594 return true; 6595 } 6596 #endif 6597 6598 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6599 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6600 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6601 return true; 6602 } 6603 6604 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6605 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6606 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6607 return true; 6608 } 6609 6610 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6611 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6612 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6613 return true; 6614 } 6615 6616 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6617 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6618 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6619 connection->state = SENT_DISCONNECT; 6620 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6621 return true; 6622 } 6623 6624 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6625 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6626 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6627 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6628 return true; 6629 } 6630 6631 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6632 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6633 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6634 return true; 6635 } 6636 6637 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6638 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6639 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6640 return true; 6641 } 6642 6643 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6644 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6645 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6646 return true; 6647 } 6648 6649 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6650 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6651 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6652 return true; 6653 } 6654 6655 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6656 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6657 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6658 return true; 6659 } 6660 #endif 6661 6662 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6663 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6664 #ifdef ENABLE_CLASSIC 6665 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6666 #endif 6667 if (connection->state != SENT_DISCONNECT){ 6668 connection->state = SENT_DISCONNECT; 6669 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6670 return true; 6671 } 6672 } 6673 6674 #ifdef ENABLE_CLASSIC 6675 uint16_t sniff_min_interval; 6676 switch (connection->sniff_min_interval){ 6677 case 0: 6678 break; 6679 case 0xffff: 6680 connection->sniff_min_interval = 0; 6681 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6682 return true; 6683 default: 6684 sniff_min_interval = connection->sniff_min_interval; 6685 connection->sniff_min_interval = 0; 6686 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6687 return true; 6688 } 6689 6690 if (connection->sniff_subrating_max_latency != 0xffff){ 6691 uint16_t max_latency = connection->sniff_subrating_max_latency; 6692 connection->sniff_subrating_max_latency = 0; 6693 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6694 return true; 6695 } 6696 6697 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6698 uint8_t service_type = (uint8_t) connection->qos_service_type; 6699 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6700 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); 6701 return true; 6702 } 6703 6704 if (connection->request_role != HCI_ROLE_INVALID){ 6705 hci_role_t role = connection->request_role; 6706 connection->request_role = HCI_ROLE_INVALID; 6707 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6708 return true; 6709 } 6710 #endif 6711 6712 if (connection->gap_connection_tasks != 0){ 6713 #ifdef ENABLE_CLASSIC 6714 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6715 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6716 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6717 return true; 6718 } 6719 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6720 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6721 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6722 return true; 6723 } 6724 #endif 6725 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6726 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6727 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6728 return true; 6729 } 6730 } 6731 6732 #ifdef ENABLE_BLE 6733 switch (connection->le_con_parameter_update_state){ 6734 // response to L2CAP CON PARAMETER UPDATE REQUEST 6735 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6736 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6737 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6738 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6739 0x0000, 0xffff); 6740 return true; 6741 case CON_PARAMETER_UPDATE_REPLY: 6742 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6743 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6744 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6745 0x0000, 0xffff); 6746 return true; 6747 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6748 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6749 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6750 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6751 return true; 6752 default: 6753 break; 6754 } 6755 if (connection->le_phy_update_all_phys != 0xffu){ 6756 uint8_t all_phys = connection->le_phy_update_all_phys; 6757 connection->le_phy_update_all_phys = 0xff; 6758 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); 6759 return true; 6760 } 6761 #endif 6762 } 6763 return false; 6764 } 6765 6766 static void hci_run(void){ 6767 6768 // stack state sub statemachines 6769 switch (hci_stack->state) { 6770 case HCI_STATE_INITIALIZING: 6771 hci_initializing_run(); 6772 break; 6773 case HCI_STATE_HALTING: 6774 hci_halting_run(); 6775 break; 6776 case HCI_STATE_FALLING_ASLEEP: 6777 hci_falling_asleep_run(); 6778 break; 6779 default: 6780 break; 6781 } 6782 6783 // allow to run after initialization to working transition 6784 if (hci_stack->state != HCI_STATE_WORKING){ 6785 return; 6786 } 6787 6788 bool done; 6789 6790 // send continuation fragments first, as they block the prepared packet buffer 6791 done = hci_run_acl_fragments(); 6792 if (done) return; 6793 6794 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6795 done = hci_run_iso_fragments(); 6796 if (done) return; 6797 #endif 6798 6799 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6800 // send host num completed packets next as they don't require num_cmd_packets > 0 6801 if (!hci_can_send_comand_packet_transport()) return; 6802 if (hci_stack->host_completed_packets){ 6803 hci_host_num_completed_packets(); 6804 return; 6805 } 6806 #endif 6807 6808 if (!hci_can_send_command_packet_now()) return; 6809 6810 // global/non-connection oriented commands 6811 6812 6813 #ifdef ENABLE_CLASSIC 6814 // general gap classic 6815 done = hci_run_general_gap_classic(); 6816 if (done) return; 6817 #endif 6818 6819 #ifdef ENABLE_BLE 6820 // general gap le 6821 done = hci_run_general_gap_le(); 6822 if (done) return; 6823 6824 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6825 // ISO related tasks, e.g. BIG create/terminate/sync 6826 done = hci_run_iso_tasks(); 6827 if (done) return; 6828 #endif 6829 #endif 6830 6831 // send pending HCI commands 6832 hci_run_general_pending_commands(); 6833 } 6834 6835 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6836 // house-keeping 6837 6838 #ifdef ENABLE_CLASSIC 6839 bd_addr_t addr; 6840 hci_connection_t * conn; 6841 #endif 6842 #ifdef ENABLE_LE_CENTRAL 6843 uint8_t initiator_filter_policy; 6844 #endif 6845 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6846 uint8_t i; 6847 uint8_t num_cis; 6848 hci_con_handle_t cis_handle; 6849 uint8_t status; 6850 #endif 6851 6852 uint16_t opcode = little_endian_read_16(packet, 0); 6853 switch (opcode) { 6854 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6855 hci_stack->loopback_mode = packet[3]; 6856 break; 6857 6858 #ifdef ENABLE_CLASSIC 6859 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6860 reverse_bd_addr(&packet[3], addr); 6861 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6862 6863 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6864 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6865 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6866 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6867 } 6868 6869 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6870 if (!conn) { 6871 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6872 if (!conn) { 6873 // notify client that alloc failed 6874 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6875 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6876 } 6877 conn->state = SEND_CREATE_CONNECTION; 6878 conn->role = HCI_ROLE_MASTER; 6879 } 6880 6881 log_info("conn state %u", conn->state); 6882 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6883 switch (conn->state) { 6884 // if connection active exists 6885 case OPEN: 6886 // and OPEN, emit connection complete command 6887 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6888 // packet not sent to controller 6889 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6890 case RECEIVED_DISCONNECTION_COMPLETE: 6891 // create connection triggered in disconnect complete event, let's do it now 6892 break; 6893 case SEND_CREATE_CONNECTION: 6894 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6895 if (hci_classic_operation_active()){ 6896 return ERROR_CODE_SUCCESS; 6897 } 6898 #endif 6899 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6900 break; 6901 default: 6902 // otherwise, just ignore as it is already in the open process 6903 // packet not sent to controller 6904 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6905 } 6906 conn->state = SENT_CREATE_CONNECTION; 6907 6908 // track outgoing connection 6909 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6910 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6911 break; 6912 6913 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6914 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6915 // setup_synchronous_connection? Voice setting at offset 22 6916 // TODO: compare to current setting if sco connection already active 6917 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6918 break; 6919 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6920 // accept_synchronous_connection? Voice setting at offset 18 6921 // TODO: compare to current setting if sco connection already active 6922 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6923 // track outgoing connection 6924 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6925 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6926 break; 6927 #endif 6928 #endif 6929 6930 #ifdef ENABLE_BLE 6931 #ifdef ENABLE_LE_CENTRAL 6932 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6933 // white list used? 6934 initiator_filter_policy = packet[7]; 6935 switch (initiator_filter_policy) { 6936 case 0: 6937 // whitelist not used 6938 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6939 break; 6940 case 1: 6941 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6942 break; 6943 default: 6944 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6945 break; 6946 } 6947 // track outgoing connection 6948 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6949 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6950 break; 6951 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6952 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6953 break; 6954 #endif 6955 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6956 #ifdef ENABLE_LE_CENTRAL 6957 case HCI_OPCODE_HCI_LE_CREATE_CIS: 6958 status = ERROR_CODE_SUCCESS; 6959 num_cis = packet[3]; 6960 // setup hci_iso_streams 6961 for (i=0;i<num_cis;i++){ 6962 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 4 + (4 * i)); 6963 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, cis_handle, 0xff); 6964 if (status != ERROR_CODE_SUCCESS) { 6965 break; 6966 } 6967 } 6968 // free structs on error 6969 if (status != ERROR_CODE_SUCCESS){ 6970 hci_iso_stream_requested_finalize(0xff); 6971 return status; 6972 } 6973 break; 6974 #endif /* ENABLE_LE_CENTRAL */ 6975 #ifdef ENABLE_LE_PERIPHERAL 6976 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 6977 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 3); 6978 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, cis_handle, 0xff); 6979 if (status != ERROR_CODE_SUCCESS){ 6980 return status; 6981 } 6982 break; 6983 #endif /* ENABLE_LE_PERIPHERAL */ 6984 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6985 #endif /* ENABLE_BLE */ 6986 default: 6987 break; 6988 } 6989 6990 hci_stack->num_cmd_packets--; 6991 6992 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6993 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6994 if (err != 0){ 6995 return ERROR_CODE_HARDWARE_FAILURE; 6996 } 6997 return ERROR_CODE_SUCCESS; 6998 } 6999 7000 // disconnect because of security block 7001 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7002 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7003 if (!connection) return; 7004 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7005 } 7006 7007 7008 // Configure Secure Simple Pairing 7009 7010 #ifdef ENABLE_CLASSIC 7011 7012 // enable will enable SSP during init 7013 void gap_ssp_set_enable(int enable){ 7014 hci_stack->ssp_enable = enable; 7015 } 7016 7017 static int hci_local_ssp_activated(void){ 7018 return gap_ssp_supported() && hci_stack->ssp_enable; 7019 } 7020 7021 // if set, BTstack will respond to io capability request using authentication requirement 7022 void gap_ssp_set_io_capability(int io_capability){ 7023 hci_stack->ssp_io_capability = io_capability; 7024 } 7025 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7026 hci_stack->ssp_authentication_requirement = authentication_requirement; 7027 } 7028 7029 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7030 void gap_ssp_set_auto_accept(int auto_accept){ 7031 hci_stack->ssp_auto_accept = auto_accept; 7032 } 7033 7034 void gap_secure_connections_enable(bool enable){ 7035 hci_stack->secure_connections_enable = enable; 7036 } 7037 bool gap_secure_connections_active(void){ 7038 return hci_stack->secure_connections_active; 7039 } 7040 7041 #endif 7042 7043 // va_list part of hci_send_cmd 7044 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7045 if (!hci_can_send_command_packet_now()){ 7046 log_error("hci_send_cmd called but cannot send packet now"); 7047 return ERROR_CODE_COMMAND_DISALLOWED; 7048 } 7049 7050 // for HCI INITIALIZATION 7051 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7052 hci_stack->last_cmd_opcode = cmd->opcode; 7053 7054 hci_reserve_packet_buffer(); 7055 uint8_t * packet = hci_stack->hci_packet_buffer; 7056 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7057 uint8_t status = hci_send_cmd_packet(packet, size); 7058 7059 // release packet buffer on error or for synchronous transport implementations 7060 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7061 hci_release_packet_buffer(); 7062 hci_emit_transport_packet_sent(); 7063 } 7064 7065 return status; 7066 } 7067 7068 /** 7069 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7070 */ 7071 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7072 va_list argptr; 7073 va_start(argptr, cmd); 7074 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7075 va_end(argptr); 7076 return status; 7077 } 7078 7079 // Create various non-HCI events. 7080 // TODO: generalize, use table similar to hci_create_command 7081 7082 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7083 // dump packet 7084 if (dump) { 7085 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7086 } 7087 7088 // dispatch to all event handlers 7089 btstack_linked_list_iterator_t it; 7090 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7091 while (btstack_linked_list_iterator_has_next(&it)){ 7092 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7093 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7094 } 7095 } 7096 7097 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7098 if (!hci_stack->acl_packet_handler) return; 7099 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7100 } 7101 7102 #ifdef ENABLE_CLASSIC 7103 static void hci_notify_if_sco_can_send_now(void){ 7104 // notify SCO sender if waiting 7105 if (!hci_stack->sco_waiting_for_can_send_now) return; 7106 if (hci_can_send_sco_packet_now()){ 7107 hci_stack->sco_waiting_for_can_send_now = 0; 7108 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7109 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7110 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7111 } 7112 } 7113 7114 // parsing end emitting has been merged to reduce code size 7115 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7116 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7117 7118 uint8_t * eir_data; 7119 ad_context_t context; 7120 const uint8_t * name; 7121 uint8_t name_len; 7122 7123 if (size < 3) return; 7124 7125 int event_type = hci_event_packet_get_type(packet); 7126 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7127 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7128 7129 switch (event_type){ 7130 case HCI_EVENT_INQUIRY_RESULT: 7131 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7132 if (size != (3 + (num_responses * 14))) return; 7133 break; 7134 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7135 if (size != 257) return; 7136 if (num_responses != 1) return; 7137 break; 7138 default: 7139 return; 7140 } 7141 7142 // event[1] is set at the end 7143 int i; 7144 for (i=0; i<num_responses;i++){ 7145 memset(event, 0, sizeof(event)); 7146 event[0] = GAP_EVENT_INQUIRY_RESULT; 7147 uint8_t event_size = 27; // if name is not set by EIR 7148 7149 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7150 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7151 (void)memcpy(&event[9], 7152 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7153 3); // class of device 7154 (void)memcpy(&event[12], 7155 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7156 2); // clock offset 7157 7158 switch (event_type){ 7159 case HCI_EVENT_INQUIRY_RESULT: 7160 // 14,15,16,17 = 0, size 18 7161 break; 7162 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7163 event[14] = 1; 7164 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7165 // 16,17 = 0, size 18 7166 break; 7167 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7168 event[14] = 1; 7169 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7170 // EIR packets only contain a single inquiry response 7171 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7172 name = NULL; 7173 // Iterate over EIR data 7174 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7175 uint8_t data_type = ad_iterator_get_data_type(&context); 7176 uint8_t data_size = ad_iterator_get_data_len(&context); 7177 const uint8_t * data = ad_iterator_get_data(&context); 7178 // Prefer Complete Local Name over Shortened Local Name 7179 switch (data_type){ 7180 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7181 if (name) continue; 7182 /* fall through */ 7183 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7184 name = data; 7185 name_len = data_size; 7186 break; 7187 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7188 if (data_size != 8) break; 7189 event[16] = 1; 7190 memcpy(&event[17], data, 8); 7191 break; 7192 default: 7193 break; 7194 } 7195 } 7196 if (name){ 7197 event[25] = 1; 7198 // truncate name if needed 7199 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7200 event[26] = len; 7201 (void)memcpy(&event[27], name, len); 7202 event_size += len; 7203 } 7204 break; 7205 default: 7206 return; 7207 } 7208 event[1] = event_size - 2; 7209 hci_emit_event(event, event_size, 1); 7210 } 7211 } 7212 #endif 7213 7214 void hci_emit_state(void){ 7215 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7216 uint8_t event[3]; 7217 event[0] = BTSTACK_EVENT_STATE; 7218 event[1] = sizeof(event) - 2u; 7219 event[2] = hci_stack->state; 7220 hci_emit_event(event, sizeof(event), 1); 7221 } 7222 7223 #ifdef ENABLE_CLASSIC 7224 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7225 uint8_t event[13]; 7226 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7227 event[1] = sizeof(event) - 2; 7228 event[2] = status; 7229 little_endian_store_16(event, 3, con_handle); 7230 reverse_bd_addr(address, &event[5]); 7231 event[11] = 1; // ACL connection 7232 event[12] = 0; // encryption disabled 7233 hci_emit_event(event, sizeof(event), 1); 7234 } 7235 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7236 if (disable_l2cap_timeouts) return; 7237 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7238 uint8_t event[4]; 7239 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7240 event[1] = sizeof(event) - 2; 7241 little_endian_store_16(event, 2, conn->con_handle); 7242 hci_emit_event(event, sizeof(event), 1); 7243 } 7244 #endif 7245 7246 #ifdef ENABLE_BLE 7247 #ifdef ENABLE_LE_CENTRAL 7248 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){ 7249 uint8_t event[21]; 7250 event[0] = HCI_EVENT_LE_META; 7251 event[1] = sizeof(event) - 2u; 7252 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7253 event[3] = status; 7254 little_endian_store_16(event, 4, con_handle); 7255 event[6] = 0; // TODO: role 7256 event[7] = address_type; 7257 reverse_bd_addr(address, &event[8]); 7258 little_endian_store_16(event, 14, 0); // interval 7259 little_endian_store_16(event, 16, 0); // latency 7260 little_endian_store_16(event, 18, 0); // supervision timeout 7261 event[20] = 0; // master clock accuracy 7262 hci_emit_event(event, sizeof(event), 1); 7263 } 7264 #endif 7265 #endif 7266 7267 static void hci_emit_transport_packet_sent(void){ 7268 // notify upper stack that it might be possible to send again 7269 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7270 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7271 } 7272 7273 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7274 uint8_t event[6]; 7275 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7276 event[1] = sizeof(event) - 2u; 7277 event[2] = 0; // status = OK 7278 little_endian_store_16(event, 3, con_handle); 7279 event[5] = reason; 7280 hci_emit_event(event, sizeof(event), 1); 7281 } 7282 7283 static void hci_emit_nr_connections_changed(void){ 7284 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7285 uint8_t event[3]; 7286 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7287 event[1] = sizeof(event) - 2u; 7288 event[2] = nr_hci_connections(); 7289 hci_emit_event(event, sizeof(event), 1); 7290 } 7291 7292 static void hci_emit_hci_open_failed(void){ 7293 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7294 uint8_t event[2]; 7295 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7296 event[1] = sizeof(event) - 2u; 7297 hci_emit_event(event, sizeof(event), 1); 7298 } 7299 7300 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7301 log_info("hci_emit_dedicated_bonding_result %u ", status); 7302 uint8_t event[9]; 7303 int pos = 0; 7304 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7305 event[pos++] = sizeof(event) - 2u; 7306 event[pos++] = status; 7307 reverse_bd_addr(address, &event[pos]); 7308 hci_emit_event(event, sizeof(event), 1); 7309 } 7310 7311 7312 #ifdef ENABLE_CLASSIC 7313 7314 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7315 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7316 uint8_t event[5]; 7317 int pos = 0; 7318 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7319 event[pos++] = sizeof(event) - 2; 7320 little_endian_store_16(event, 2, con_handle); 7321 pos += 2; 7322 event[pos++] = level; 7323 hci_emit_event(event, sizeof(event), 1); 7324 } 7325 7326 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7327 if (!connection) return LEVEL_0; 7328 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7329 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7330 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7331 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7332 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7333 // LEVEL 4 always requires 128 bit encrytion key size 7334 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7335 security_level = LEVEL_3; 7336 } 7337 return security_level; 7338 } 7339 7340 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7341 uint8_t event[4]; 7342 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7343 event[1] = sizeof(event) - 2; 7344 event[2] = discoverable; 7345 event[3] = connectable; 7346 hci_emit_event(event, sizeof(event), 1); 7347 } 7348 7349 // query if remote side supports eSCO 7350 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7351 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7352 if (!connection) return false; 7353 return (connection->remote_supported_features[0] & 1) != 0; 7354 } 7355 7356 static bool hci_ssp_supported(hci_connection_t * connection){ 7357 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7358 return (connection->bonding_flags & mask) == mask; 7359 } 7360 7361 // query if remote side supports SSP 7362 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7363 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7364 if (!connection) return false; 7365 return hci_ssp_supported(connection) ? 1 : 0; 7366 } 7367 7368 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7369 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7370 } 7371 7372 /** 7373 * Check if remote supported features query has completed 7374 */ 7375 bool hci_remote_features_available(hci_con_handle_t handle){ 7376 hci_connection_t * connection = hci_connection_for_handle(handle); 7377 if (!connection) return false; 7378 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7379 } 7380 7381 /** 7382 * Trigger remote supported features query 7383 */ 7384 7385 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7386 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7387 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7388 } 7389 } 7390 7391 void hci_remote_features_query(hci_con_handle_t con_handle){ 7392 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7393 if (!connection) return; 7394 hci_trigger_remote_features_for_connection(connection); 7395 hci_run(); 7396 } 7397 7398 // GAP API 7399 /** 7400 * @bbrief enable/disable bonding. default is enabled 7401 * @praram enabled 7402 */ 7403 void gap_set_bondable_mode(int enable){ 7404 hci_stack->bondable = enable ? 1 : 0; 7405 } 7406 /** 7407 * @brief Get bondable mode. 7408 * @return 1 if bondable 7409 */ 7410 int gap_get_bondable_mode(void){ 7411 return hci_stack->bondable; 7412 } 7413 7414 /** 7415 * @brief map link keys to security levels 7416 */ 7417 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7418 switch (link_key_type){ 7419 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7420 return LEVEL_4; 7421 case COMBINATION_KEY: 7422 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7423 return LEVEL_3; 7424 default: 7425 return LEVEL_2; 7426 } 7427 } 7428 7429 /** 7430 * @brief map link keys to secure connection yes/no 7431 */ 7432 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7433 switch (link_key_type){ 7434 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7435 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7436 return true; 7437 default: 7438 return false; 7439 } 7440 } 7441 7442 /** 7443 * @brief map link keys to authenticated 7444 */ 7445 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7446 switch (link_key_type){ 7447 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7448 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7449 return true; 7450 default: 7451 return false; 7452 } 7453 } 7454 7455 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7456 log_info("gap_mitm_protection_required_for_security_level %u", level); 7457 return level > LEVEL_2; 7458 } 7459 7460 /** 7461 * @brief get current security level 7462 */ 7463 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7464 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7465 if (!connection) return LEVEL_0; 7466 return gap_security_level_for_connection(connection); 7467 } 7468 7469 /** 7470 * @brief request connection to device to 7471 * @result GAP_AUTHENTICATION_RESULT 7472 */ 7473 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7474 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7475 if (!connection){ 7476 hci_emit_security_level(con_handle, LEVEL_0); 7477 return; 7478 } 7479 7480 btstack_assert(hci_is_le_connection(connection) == false); 7481 7482 // 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) 7483 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7484 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7485 requested_level = LEVEL_4; 7486 } 7487 7488 gap_security_level_t current_level = gap_security_level(con_handle); 7489 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7490 requested_level, connection->requested_security_level, current_level); 7491 7492 // authentication active if authentication request was sent or planned level > 0 7493 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7494 if (authentication_active){ 7495 // authentication already active 7496 if (connection->requested_security_level < requested_level){ 7497 // increase requested level as new level is higher 7498 // TODO: handle re-authentication when done 7499 connection->requested_security_level = requested_level; 7500 } 7501 } else { 7502 // no request active, notify if security sufficient 7503 if (requested_level <= current_level){ 7504 hci_emit_security_level(con_handle, current_level); 7505 return; 7506 } 7507 7508 // store request 7509 connection->requested_security_level = requested_level; 7510 7511 // start to authenticate connection 7512 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7513 7514 // request remote features if not already active, also trigger hci_run 7515 hci_remote_features_query(con_handle); 7516 } 7517 } 7518 7519 /** 7520 * @brief start dedicated bonding with device. disconnect after bonding 7521 * @param device 7522 * @param request MITM protection 7523 * @result GAP_DEDICATED_BONDING_COMPLETE 7524 */ 7525 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7526 7527 // create connection state machine 7528 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7529 7530 if (!connection){ 7531 return BTSTACK_MEMORY_ALLOC_FAILED; 7532 } 7533 7534 // delete linkn key 7535 gap_drop_link_key_for_bd_addr(device); 7536 7537 // configure LEVEL_2/3, dedicated bonding 7538 connection->state = SEND_CREATE_CONNECTION; 7539 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7540 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7541 connection->bonding_flags = BONDING_DEDICATED; 7542 7543 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7544 7545 // handle: connnection failure (connection complete != ok) 7546 // handle: authentication failure 7547 // handle: disconnect on done 7548 7549 hci_run(); 7550 7551 return 0; 7552 } 7553 7554 void gap_set_local_name(const char * local_name){ 7555 hci_stack->local_name = local_name; 7556 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7557 // also update EIR if not set by user 7558 if (hci_stack->eir_data == NULL){ 7559 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7560 } 7561 hci_run(); 7562 } 7563 #endif 7564 7565 7566 #ifdef ENABLE_BLE 7567 7568 #ifdef ENABLE_LE_CENTRAL 7569 void gap_start_scan(void){ 7570 hci_stack->le_scanning_enabled = true; 7571 hci_run(); 7572 } 7573 7574 void gap_stop_scan(void){ 7575 hci_stack->le_scanning_enabled = false; 7576 hci_run(); 7577 } 7578 7579 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7580 hci_stack->le_scan_type = scan_type; 7581 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7582 hci_stack->le_scan_interval = scan_interval; 7583 hci_stack->le_scan_window = scan_window; 7584 hci_stack->le_scanning_param_update = true; 7585 hci_run(); 7586 } 7587 7588 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7589 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7590 } 7591 7592 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7593 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7594 if (!conn){ 7595 // disallow if le connection is already outgoing 7596 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7597 log_error("le connection already active"); 7598 return ERROR_CODE_COMMAND_DISALLOWED; 7599 } 7600 7601 log_info("gap_connect: no connection exists yet, creating context"); 7602 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7603 if (!conn){ 7604 // notify client that alloc failed 7605 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7606 log_info("gap_connect: failed to alloc hci_connection_t"); 7607 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7608 } 7609 7610 // set le connecting state 7611 if (hci_is_le_connection_type(addr_type)){ 7612 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7613 } 7614 7615 conn->state = SEND_CREATE_CONNECTION; 7616 log_info("gap_connect: send create connection next"); 7617 hci_run(); 7618 return ERROR_CODE_SUCCESS; 7619 } 7620 7621 if (!hci_is_le_connection(conn) || 7622 (conn->state == SEND_CREATE_CONNECTION) || 7623 (conn->state == SENT_CREATE_CONNECTION)) { 7624 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7625 log_error("gap_connect: classic connection or connect is already being created"); 7626 return GATT_CLIENT_IN_WRONG_STATE; 7627 } 7628 7629 // check if connection was just disconnected 7630 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7631 log_info("gap_connect: send create connection (again)"); 7632 conn->state = SEND_CREATE_CONNECTION; 7633 hci_run(); 7634 return ERROR_CODE_SUCCESS; 7635 } 7636 7637 log_info("gap_connect: context exists with state %u", conn->state); 7638 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7639 hci_run(); 7640 return ERROR_CODE_SUCCESS; 7641 } 7642 7643 // @assumption: only a single outgoing LE Connection exists 7644 static hci_connection_t * gap_get_outgoing_connection(void){ 7645 btstack_linked_item_t *it; 7646 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7647 hci_connection_t * conn = (hci_connection_t *) it; 7648 if (!hci_is_le_connection(conn)) continue; 7649 switch (conn->state){ 7650 case SEND_CREATE_CONNECTION: 7651 case SENT_CREATE_CONNECTION: 7652 return conn; 7653 default: 7654 break; 7655 }; 7656 } 7657 return NULL; 7658 } 7659 7660 uint8_t gap_connect_cancel(void){ 7661 hci_connection_t * conn; 7662 switch (hci_stack->le_connecting_request){ 7663 case LE_CONNECTING_IDLE: 7664 break; 7665 case LE_CONNECTING_WHITELIST: 7666 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7667 hci_run(); 7668 break; 7669 case LE_CONNECTING_DIRECT: 7670 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7671 conn = gap_get_outgoing_connection(); 7672 if (conn == NULL){ 7673 hci_run(); 7674 } else { 7675 switch (conn->state){ 7676 case SEND_CREATE_CONNECTION: 7677 // skip sending create connection and emit event instead 7678 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7679 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7680 btstack_memory_hci_connection_free( conn ); 7681 break; 7682 case SENT_CREATE_CONNECTION: 7683 // let hci_run_general_gap_le cancel outgoing connection 7684 hci_run(); 7685 break; 7686 default: 7687 break; 7688 } 7689 } 7690 break; 7691 default: 7692 btstack_unreachable(); 7693 break; 7694 } 7695 return ERROR_CODE_SUCCESS; 7696 } 7697 7698 /** 7699 * @brief Set connection parameters for outgoing connections 7700 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7701 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7702 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7703 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7704 * @param conn_latency, default: 4 7705 * @param supervision_timeout (unit: 10ms), default: 720 ms 7706 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7707 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7708 */ 7709 7710 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7711 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7712 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7713 hci_stack->le_connection_scan_interval = conn_scan_interval; 7714 hci_stack->le_connection_scan_window = conn_scan_window; 7715 hci_stack->le_connection_interval_min = conn_interval_min; 7716 hci_stack->le_connection_interval_max = conn_interval_max; 7717 hci_stack->le_connection_latency = conn_latency; 7718 hci_stack->le_supervision_timeout = supervision_timeout; 7719 hci_stack->le_minimum_ce_length = min_ce_length; 7720 hci_stack->le_maximum_ce_length = max_ce_length; 7721 } 7722 #endif 7723 7724 /** 7725 * @brief Updates the connection parameters for a given LE connection 7726 * @param handle 7727 * @param conn_interval_min (unit: 1.25ms) 7728 * @param conn_interval_max (unit: 1.25ms) 7729 * @param conn_latency 7730 * @param supervision_timeout (unit: 10ms) 7731 * @return 0 if ok 7732 */ 7733 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7734 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7735 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7736 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7737 connection->le_conn_interval_min = conn_interval_min; 7738 connection->le_conn_interval_max = conn_interval_max; 7739 connection->le_conn_latency = conn_latency; 7740 connection->le_supervision_timeout = supervision_timeout; 7741 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7742 hci_run(); 7743 return 0; 7744 } 7745 7746 /** 7747 * @brief Request an update of the connection parameter for a given LE connection 7748 * @param handle 7749 * @param conn_interval_min (unit: 1.25ms) 7750 * @param conn_interval_max (unit: 1.25ms) 7751 * @param conn_latency 7752 * @param supervision_timeout (unit: 10ms) 7753 * @return 0 if ok 7754 */ 7755 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7756 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7757 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7758 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7759 connection->le_conn_interval_min = conn_interval_min; 7760 connection->le_conn_interval_max = conn_interval_max; 7761 connection->le_conn_latency = conn_latency; 7762 connection->le_supervision_timeout = supervision_timeout; 7763 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7764 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7765 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7766 return 0; 7767 } 7768 7769 #ifdef ENABLE_LE_PERIPHERAL 7770 7771 /** 7772 * @brief Set Advertisement Data 7773 * @param advertising_data_length 7774 * @param advertising_data (max 31 octets) 7775 * @note data is not copied, pointer has to stay valid 7776 */ 7777 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7778 hci_stack->le_advertisements_data_len = advertising_data_length; 7779 hci_stack->le_advertisements_data = advertising_data; 7780 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7781 hci_run(); 7782 } 7783 7784 /** 7785 * @brief Set Scan Response Data 7786 * @param advertising_data_length 7787 * @param advertising_data (max 31 octets) 7788 * @note data is not copied, pointer has to stay valid 7789 */ 7790 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7791 hci_stack->le_scan_response_data_len = scan_response_data_length; 7792 hci_stack->le_scan_response_data = scan_response_data; 7793 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7794 hci_run(); 7795 } 7796 7797 /** 7798 * @brief Set Advertisement Parameters 7799 * @param adv_int_min 7800 * @param adv_int_max 7801 * @param adv_type 7802 * @param direct_address_type 7803 * @param direct_address 7804 * @param channel_map 7805 * @param filter_policy 7806 * 7807 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7808 */ 7809 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7810 uint8_t direct_address_typ, bd_addr_t direct_address, 7811 uint8_t channel_map, uint8_t filter_policy) { 7812 7813 hci_stack->le_advertisements_interval_min = adv_int_min; 7814 hci_stack->le_advertisements_interval_max = adv_int_max; 7815 hci_stack->le_advertisements_type = adv_type; 7816 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7817 hci_stack->le_advertisements_channel_map = channel_map; 7818 hci_stack->le_advertisements_filter_policy = filter_policy; 7819 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7820 6); 7821 7822 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7823 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7824 hci_run(); 7825 } 7826 7827 /** 7828 * @brief Enable/Disable Advertisements 7829 * @param enabled 7830 */ 7831 void gap_advertisements_enable(int enabled){ 7832 if (enabled == 0){ 7833 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7834 } else { 7835 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7836 } 7837 hci_update_advertisements_enabled_for_current_roles(); 7838 hci_run(); 7839 } 7840 7841 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7842 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7843 btstack_linked_list_iterator_t it; 7844 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7845 while (btstack_linked_list_iterator_has_next(&it)){ 7846 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7847 if ( item->advertising_handle == advertising_handle ) { 7848 return item; 7849 } 7850 } 7851 return NULL; 7852 } 7853 7854 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7855 // find free advertisement handle 7856 uint8_t advertisement_handle; 7857 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7858 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7859 } 7860 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7861 // clear 7862 memset(storage, 0, sizeof(le_advertising_set_t)); 7863 // copy params 7864 storage->advertising_handle = advertisement_handle; 7865 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7866 // add to list 7867 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7868 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7869 *out_advertising_handle = advertisement_handle; 7870 // set tasks and start 7871 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7872 hci_run(); 7873 return ERROR_CODE_SUCCESS; 7874 } 7875 7876 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7877 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7878 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7879 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7880 // set tasks and start 7881 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7882 hci_run(); 7883 return ERROR_CODE_SUCCESS; 7884 } 7885 7886 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7887 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7888 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7889 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7890 return ERROR_CODE_SUCCESS; 7891 } 7892 7893 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7894 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7895 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7896 memcpy(advertising_set->random_address, random_address, 6); 7897 // set tasks and start 7898 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7899 hci_run(); 7900 return ERROR_CODE_SUCCESS; 7901 } 7902 7903 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7904 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7905 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7906 advertising_set->adv_data = advertising_data; 7907 advertising_set->adv_data_len = advertising_data_length; 7908 // set tasks and start 7909 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7910 hci_run(); 7911 return ERROR_CODE_SUCCESS; 7912 } 7913 7914 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){ 7915 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7916 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7917 advertising_set->scan_data = scan_response_data; 7918 advertising_set->scan_data_len = scan_response_data_length; 7919 // set tasks and start 7920 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7921 hci_run(); 7922 return ERROR_CODE_SUCCESS; 7923 } 7924 7925 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7926 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7927 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7928 advertising_set->enable_timeout = timeout; 7929 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7930 // set tasks and start 7931 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7932 hci_run(); 7933 return ERROR_CODE_SUCCESS; 7934 } 7935 7936 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7937 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7938 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7939 // set tasks and start 7940 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7941 hci_run(); 7942 return ERROR_CODE_SUCCESS; 7943 } 7944 7945 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7946 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7947 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7948 // set tasks and start 7949 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7950 hci_run(); 7951 return ERROR_CODE_SUCCESS; 7952 } 7953 7954 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7955 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7956 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7957 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7958 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7959 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7960 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7961 // set tasks and start 7962 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7963 hci_run(); 7964 return ERROR_CODE_SUCCESS; 7965 } 7966 7967 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7968 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7969 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7970 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7971 return ERROR_CODE_SUCCESS; 7972 } 7973 7974 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7975 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7976 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7977 advertising_set->periodic_data = periodic_data; 7978 advertising_set->periodic_data_len = periodic_data_length; 7979 // set tasks and start 7980 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7981 hci_run(); 7982 return ERROR_CODE_SUCCESS; 7983 } 7984 7985 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7986 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7987 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7988 // set tasks and start 7989 advertising_set->periodic_include_adi = include_adi; 7990 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7991 hci_run(); 7992 return ERROR_CODE_SUCCESS; 7993 } 7994 7995 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7996 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7997 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7998 // set tasks and start 7999 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8000 hci_run(); 8001 return ERROR_CODE_SUCCESS; 8002 } 8003 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8004 8005 #endif 8006 8007 #endif 8008 8009 void hci_le_set_own_address_type(uint8_t own_address_type){ 8010 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8011 if (own_address_type == hci_stack->le_own_addr_type) return; 8012 hci_stack->le_own_addr_type = own_address_type; 8013 8014 #ifdef ENABLE_LE_PERIPHERAL 8015 // update advertisement parameters, too 8016 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8017 hci_run(); 8018 #endif 8019 #ifdef ENABLE_LE_CENTRAL 8020 // note: we don't update scan parameters or modify ongoing connection attempts 8021 #endif 8022 } 8023 8024 void hci_le_random_address_set(const bd_addr_t random_address){ 8025 memcpy(hci_stack->le_random_address, random_address, 6); 8026 hci_stack->le_random_address_set = true; 8027 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8028 hci_run(); 8029 } 8030 8031 #endif 8032 8033 uint8_t gap_disconnect(hci_con_handle_t handle){ 8034 hci_connection_t * conn = hci_connection_for_handle(handle); 8035 if (!conn){ 8036 hci_emit_disconnection_complete(handle, 0); 8037 return 0; 8038 } 8039 // ignore if already disconnected 8040 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8041 return 0; 8042 } 8043 conn->state = SEND_DISCONNECT; 8044 hci_run(); 8045 return 0; 8046 } 8047 8048 int gap_read_rssi(hci_con_handle_t con_handle){ 8049 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8050 if (hci_connection == NULL) return 0; 8051 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8052 hci_run(); 8053 return 1; 8054 } 8055 8056 /** 8057 * @brief Get connection type 8058 * @param con_handle 8059 * @result connection_type 8060 */ 8061 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8062 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8063 if (!conn) return GAP_CONNECTION_INVALID; 8064 switch (conn->address_type){ 8065 case BD_ADDR_TYPE_LE_PUBLIC: 8066 case BD_ADDR_TYPE_LE_RANDOM: 8067 return GAP_CONNECTION_LE; 8068 case BD_ADDR_TYPE_SCO: 8069 return GAP_CONNECTION_SCO; 8070 case BD_ADDR_TYPE_ACL: 8071 return GAP_CONNECTION_ACL; 8072 default: 8073 return GAP_CONNECTION_INVALID; 8074 } 8075 } 8076 8077 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8078 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8079 if (!conn) return HCI_ROLE_INVALID; 8080 return (hci_role_t) conn->role; 8081 } 8082 8083 8084 #ifdef ENABLE_CLASSIC 8085 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8086 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8087 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8088 conn->request_role = role; 8089 hci_run(); 8090 return ERROR_CODE_SUCCESS; 8091 } 8092 #endif 8093 8094 #ifdef ENABLE_BLE 8095 8096 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){ 8097 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8098 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8099 8100 conn->le_phy_update_all_phys = all_phys; 8101 conn->le_phy_update_tx_phys = tx_phys; 8102 conn->le_phy_update_rx_phys = rx_phys; 8103 conn->le_phy_update_phy_options = phy_options; 8104 8105 hci_run(); 8106 8107 return 0; 8108 } 8109 8110 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8111 // check if already in list 8112 btstack_linked_list_iterator_t it; 8113 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8114 while (btstack_linked_list_iterator_has_next(&it)) { 8115 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8116 if (entry->address_type != address_type) { 8117 continue; 8118 } 8119 if (memcmp(entry->address, address, 6) != 0) { 8120 continue; 8121 } 8122 // disallow if already scheduled to add 8123 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8124 return ERROR_CODE_COMMAND_DISALLOWED; 8125 } 8126 // still on controller, but scheduled to remove -> re-add 8127 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8128 return ERROR_CODE_SUCCESS; 8129 } 8130 // alloc and add to list 8131 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8132 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8133 entry->address_type = address_type; 8134 (void)memcpy(entry->address, address, 6); 8135 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8136 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8137 return ERROR_CODE_SUCCESS; 8138 } 8139 8140 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8141 btstack_linked_list_iterator_t it; 8142 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8143 while (btstack_linked_list_iterator_has_next(&it)){ 8144 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8145 if (entry->address_type != address_type) { 8146 continue; 8147 } 8148 if (memcmp(entry->address, address, 6) != 0) { 8149 continue; 8150 } 8151 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8152 // remove from controller if already present 8153 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8154 } else { 8155 // directly remove entry from whitelist 8156 btstack_linked_list_iterator_remove(&it); 8157 btstack_memory_whitelist_entry_free(entry); 8158 } 8159 return ERROR_CODE_SUCCESS; 8160 } 8161 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8162 } 8163 8164 static void hci_whitelist_clear(void){ 8165 btstack_linked_list_iterator_t it; 8166 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8167 while (btstack_linked_list_iterator_has_next(&it)){ 8168 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8169 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8170 // remove from controller if already present 8171 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8172 continue; 8173 } 8174 // directly remove entry from whitelist 8175 btstack_linked_list_iterator_remove(&it); 8176 btstack_memory_whitelist_entry_free(entry); 8177 } 8178 } 8179 8180 // free all entries unconditionally 8181 static void hci_whitelist_free(void){ 8182 btstack_linked_list_iterator_t lit; 8183 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 8184 while (btstack_linked_list_iterator_has_next(&lit)){ 8185 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 8186 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 8187 btstack_memory_whitelist_entry_free(entry); 8188 } 8189 } 8190 8191 /** 8192 * @brief Clear Whitelist 8193 * @return 0 if ok 8194 */ 8195 uint8_t gap_whitelist_clear(void){ 8196 hci_whitelist_clear(); 8197 hci_run(); 8198 return ERROR_CODE_SUCCESS; 8199 } 8200 8201 /** 8202 * @brief Add Device to Whitelist 8203 * @param address_typ 8204 * @param address 8205 * @return 0 if ok 8206 */ 8207 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8208 uint8_t status = hci_whitelist_add(address_type, address); 8209 if (status){ 8210 return status; 8211 } 8212 hci_run(); 8213 return ERROR_CODE_SUCCESS; 8214 } 8215 8216 /** 8217 * @brief Remove Device from Whitelist 8218 * @param address_typ 8219 * @param address 8220 * @return 0 if ok 8221 */ 8222 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8223 uint8_t status = hci_whitelist_remove(address_type, address); 8224 if (status){ 8225 return status; 8226 } 8227 hci_run(); 8228 return ERROR_CODE_SUCCESS; 8229 } 8230 8231 #ifdef ENABLE_LE_CENTRAL 8232 /** 8233 * @brief Connect with Whitelist 8234 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8235 * @return - if ok 8236 */ 8237 uint8_t gap_connect_with_whitelist(void){ 8238 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8239 return ERROR_CODE_COMMAND_DISALLOWED; 8240 } 8241 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8242 hci_run(); 8243 return ERROR_CODE_SUCCESS; 8244 } 8245 8246 /** 8247 * @brief Auto Connection Establishment - Start Connecting to device 8248 * @param address_typ 8249 * @param address 8250 * @return 0 if ok 8251 */ 8252 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8253 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8254 return ERROR_CODE_COMMAND_DISALLOWED; 8255 } 8256 8257 uint8_t status = hci_whitelist_add(address_type, address); 8258 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8259 return status; 8260 } 8261 8262 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8263 8264 hci_run(); 8265 return ERROR_CODE_SUCCESS; 8266 } 8267 8268 /** 8269 * @brief Auto Connection Establishment - Stop Connecting to device 8270 * @param address_typ 8271 * @param address 8272 * @return 0 if ok 8273 */ 8274 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8275 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8276 return ERROR_CODE_COMMAND_DISALLOWED; 8277 } 8278 8279 hci_whitelist_remove(address_type, address); 8280 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8281 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8282 } 8283 hci_run(); 8284 return 0; 8285 } 8286 8287 /** 8288 * @brief Auto Connection Establishment - Stop everything 8289 * @note Convenience function to stop all active auto connection attempts 8290 */ 8291 uint8_t gap_auto_connection_stop_all(void){ 8292 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8293 return ERROR_CODE_COMMAND_DISALLOWED; 8294 } 8295 hci_whitelist_clear(); 8296 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8297 hci_run(); 8298 return ERROR_CODE_SUCCESS; 8299 } 8300 8301 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8302 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8303 if (!conn) return 0; 8304 return conn->le_connection_interval; 8305 } 8306 #endif 8307 #endif 8308 8309 #ifdef ENABLE_CLASSIC 8310 /** 8311 * @brief Set Extended Inquiry Response data 8312 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8313 * @note has to be done before stack starts up 8314 */ 8315 void gap_set_extended_inquiry_response(const uint8_t * data){ 8316 hci_stack->eir_data = data; 8317 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8318 hci_run(); 8319 } 8320 8321 /** 8322 * @brief Start GAP Classic Inquiry 8323 * @param duration in 1.28s units 8324 * @return 0 if ok 8325 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8326 */ 8327 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8328 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8329 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8330 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8331 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8332 } 8333 hci_stack->inquiry_state = duration_in_1280ms_units; 8334 hci_stack->inquiry_max_period_length = 0; 8335 hci_stack->inquiry_min_period_length = 0; 8336 hci_run(); 8337 return 0; 8338 } 8339 8340 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8341 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8342 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8343 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8344 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8345 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8346 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8347 8348 hci_stack->inquiry_state = duration; 8349 hci_stack->inquiry_max_period_length = max_period_length; 8350 hci_stack->inquiry_min_period_length = min_period_length; 8351 hci_run(); 8352 return 0; 8353 } 8354 8355 /** 8356 * @brief Stop GAP Classic Inquiry 8357 * @return 0 if ok 8358 */ 8359 int gap_inquiry_stop(void){ 8360 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8361 // emit inquiry complete event, before it even started 8362 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8363 hci_emit_event(event, sizeof(event), 1); 8364 return 0; 8365 } 8366 switch (hci_stack->inquiry_state){ 8367 case GAP_INQUIRY_STATE_ACTIVE: 8368 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8369 hci_run(); 8370 return ERROR_CODE_SUCCESS; 8371 case GAP_INQUIRY_STATE_PERIODIC: 8372 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8373 hci_run(); 8374 return ERROR_CODE_SUCCESS; 8375 default: 8376 return ERROR_CODE_COMMAND_DISALLOWED; 8377 } 8378 } 8379 8380 void gap_inquiry_set_lap(uint32_t lap){ 8381 hci_stack->inquiry_lap = lap; 8382 } 8383 8384 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8385 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8386 hci_stack->inquiry_scan_window = inquiry_scan_window; 8387 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8388 hci_run(); 8389 } 8390 8391 8392 /** 8393 * @brief Remote Name Request 8394 * @param addr 8395 * @param page_scan_repetition_mode 8396 * @param clock_offset only used when bit 15 is set 8397 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8398 */ 8399 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8400 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8401 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8402 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8403 hci_stack->remote_name_clock_offset = clock_offset; 8404 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8405 hci_run(); 8406 return 0; 8407 } 8408 8409 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8410 hci_stack->gap_pairing_state = state; 8411 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8412 hci_run(); 8413 return 0; 8414 } 8415 8416 /** 8417 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8418 * @param addr 8419 * @param pin_data 8420 * @param pin_len 8421 * @return 0 if ok 8422 */ 8423 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8424 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8425 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8426 hci_stack->gap_pairing_pin_len = pin_len; 8427 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8428 } 8429 8430 /** 8431 * @brief Legacy Pairing Pin Code Response 8432 * @param addr 8433 * @param pin 8434 * @return 0 if ok 8435 */ 8436 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8437 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8438 } 8439 8440 /** 8441 * @brief Abort Legacy Pairing 8442 * @param addr 8443 * @param pin 8444 * @return 0 if ok 8445 */ 8446 int gap_pin_code_negative(bd_addr_t addr){ 8447 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8448 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8449 } 8450 8451 /** 8452 * @brief SSP Passkey Response 8453 * @param addr 8454 * @param passkey 8455 * @return 0 if ok 8456 */ 8457 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8458 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8459 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8460 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8461 } 8462 8463 /** 8464 * @brief Abort SSP Passkey Entry/Pairing 8465 * @param addr 8466 * @param pin 8467 * @return 0 if ok 8468 */ 8469 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8470 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8471 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8472 } 8473 8474 /** 8475 * @brief Accept SSP Numeric Comparison 8476 * @param addr 8477 * @param passkey 8478 * @return 0 if ok 8479 */ 8480 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8481 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8482 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8483 } 8484 8485 /** 8486 * @brief Abort SSP Numeric Comparison/Pairing 8487 * @param addr 8488 * @param pin 8489 * @return 0 if ok 8490 */ 8491 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8492 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8493 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8494 } 8495 8496 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8497 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8498 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8499 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8500 connectionSetAuthenticationFlags(conn, flag); 8501 hci_run(); 8502 return ERROR_CODE_SUCCESS; 8503 } 8504 #endif 8505 8506 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8507 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8508 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8509 } 8510 8511 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8512 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8513 } 8514 #endif 8515 8516 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8517 /** 8518 * @brief Report Remote OOB Data 8519 * @param bd_addr 8520 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8521 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8522 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8523 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8524 */ 8525 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){ 8526 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8527 if (connection == NULL) { 8528 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8529 } 8530 connection->classic_oob_c_192 = c_192; 8531 connection->classic_oob_r_192 = r_192; 8532 8533 // ignore P-256 if not supported by us 8534 if (hci_stack->secure_connections_active){ 8535 connection->classic_oob_c_256 = c_256; 8536 connection->classic_oob_r_256 = r_256; 8537 } 8538 8539 return ERROR_CODE_SUCCESS; 8540 } 8541 /** 8542 * @brief Generate new OOB data 8543 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8544 */ 8545 void gap_ssp_generate_oob_data(void){ 8546 hci_stack->classic_read_local_oob_data = true; 8547 hci_run(); 8548 } 8549 8550 #endif 8551 8552 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8553 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8554 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8555 if (connection == NULL) { 8556 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8557 } 8558 8559 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8560 connection->link_key_type = type; 8561 8562 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8563 } 8564 8565 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8566 /** 8567 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8568 * @param inquiry_mode see bluetooth_defines.h 8569 */ 8570 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8571 hci_stack->inquiry_mode = inquiry_mode; 8572 } 8573 8574 /** 8575 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8576 */ 8577 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8578 hci_stack->sco_voice_setting = voice_setting; 8579 } 8580 8581 /** 8582 * @brief Get SCO Voice Setting 8583 * @return current voice setting 8584 */ 8585 uint16_t hci_get_sco_voice_setting(void){ 8586 return hci_stack->sco_voice_setting; 8587 } 8588 8589 static int hci_have_usb_transport(void){ 8590 if (!hci_stack->hci_transport) return 0; 8591 const char * transport_name = hci_stack->hci_transport->name; 8592 if (!transport_name) return 0; 8593 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8594 } 8595 8596 /** @brief Get SCO packet length for current SCO Voice setting 8597 * @note Using SCO packets of the exact length is required for USB transfer 8598 * @return Length of SCO packets in bytes (not audio frames) 8599 */ 8600 uint16_t hci_get_sco_packet_length(void){ 8601 uint16_t sco_packet_length = 0; 8602 8603 #ifdef ENABLE_SCO_OVER_HCI 8604 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8605 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8606 8607 if (hci_have_usb_transport()){ 8608 // see Core Spec for H2 USB Transfer. 8609 // 3 byte SCO header + 24 bytes per connection 8610 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8611 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8612 } else { 8613 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8614 sco_packet_length = 3 + 60 * multiplier; 8615 // assert that it still fits inside an SCO buffer 8616 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8617 sco_packet_length = 3 + 60; 8618 } 8619 } 8620 #endif 8621 8622 #ifdef HAVE_SCO_TRANSPORT 8623 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8624 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8625 sco_packet_length = 3 + 60 * multiplier; 8626 #endif 8627 return sco_packet_length; 8628 } 8629 8630 /** 8631 * @brief Sets the master/slave policy 8632 * @param policy (0: attempt to become master, 1: let connecting device decide) 8633 */ 8634 void hci_set_master_slave_policy(uint8_t policy){ 8635 hci_stack->master_slave_policy = policy; 8636 } 8637 8638 #endif 8639 8640 HCI_STATE hci_get_state(void){ 8641 return hci_stack->state; 8642 } 8643 8644 #ifdef ENABLE_CLASSIC 8645 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8646 hci_stack->gap_classic_accept_callback = accept_callback; 8647 } 8648 #endif 8649 8650 /** 8651 * @brief Set callback for Bluetooth Hardware Error 8652 */ 8653 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8654 hci_stack->hardware_error_callback = fn; 8655 } 8656 8657 void hci_disconnect_all(void){ 8658 btstack_linked_list_iterator_t it; 8659 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8660 while (btstack_linked_list_iterator_has_next(&it)){ 8661 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8662 if (con->state == SENT_DISCONNECT) continue; 8663 con->state = SEND_DISCONNECT; 8664 } 8665 hci_run(); 8666 } 8667 8668 uint16_t hci_get_manufacturer(void){ 8669 return hci_stack->manufacturer; 8670 } 8671 8672 #ifdef ENABLE_BLE 8673 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8674 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8675 if (!hci_con) return NULL; 8676 return &hci_con->sm_connection; 8677 } 8678 8679 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8680 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8681 #endif 8682 8683 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8684 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8685 if (hci_connection == NULL) return 0; 8686 if (hci_is_le_connection(hci_connection)){ 8687 #ifdef ENABLE_BLE 8688 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8689 if (sm_conn->sm_connection_encrypted) { 8690 return sm_conn->sm_actual_encryption_key_size; 8691 } 8692 #endif 8693 } else { 8694 #ifdef ENABLE_CLASSIC 8695 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8696 return hci_connection->encryption_key_size; 8697 } 8698 #endif 8699 } 8700 return 0; 8701 } 8702 8703 bool gap_authenticated(hci_con_handle_t con_handle){ 8704 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8705 if (hci_connection == NULL) return false; 8706 8707 switch (hci_connection->address_type){ 8708 #ifdef ENABLE_BLE 8709 case BD_ADDR_TYPE_LE_PUBLIC: 8710 case BD_ADDR_TYPE_LE_RANDOM: 8711 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8712 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8713 #endif 8714 #ifdef ENABLE_CLASSIC 8715 case BD_ADDR_TYPE_SCO: 8716 case BD_ADDR_TYPE_ACL: 8717 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8718 #endif 8719 default: 8720 return false; 8721 } 8722 } 8723 8724 bool gap_secure_connection(hci_con_handle_t con_handle){ 8725 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8726 if (hci_connection == NULL) return 0; 8727 8728 switch (hci_connection->address_type){ 8729 #ifdef ENABLE_BLE 8730 case BD_ADDR_TYPE_LE_PUBLIC: 8731 case BD_ADDR_TYPE_LE_RANDOM: 8732 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8733 return hci_connection->sm_connection.sm_connection_sc != 0; 8734 #endif 8735 #ifdef ENABLE_CLASSIC 8736 case BD_ADDR_TYPE_SCO: 8737 case BD_ADDR_TYPE_ACL: 8738 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8739 #endif 8740 default: 8741 return false; 8742 } 8743 } 8744 8745 bool gap_bonded(hci_con_handle_t con_handle){ 8746 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8747 if (hci_connection == NULL) return 0; 8748 8749 #ifdef ENABLE_CLASSIC 8750 link_key_t link_key; 8751 link_key_type_t link_key_type; 8752 #endif 8753 switch (hci_connection->address_type){ 8754 #ifdef ENABLE_BLE 8755 case BD_ADDR_TYPE_LE_PUBLIC: 8756 case BD_ADDR_TYPE_LE_RANDOM: 8757 return hci_connection->sm_connection.sm_le_db_index >= 0; 8758 #endif 8759 #ifdef ENABLE_CLASSIC 8760 case BD_ADDR_TYPE_SCO: 8761 case BD_ADDR_TYPE_ACL: 8762 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8763 #endif 8764 default: 8765 return false; 8766 } 8767 } 8768 8769 #ifdef ENABLE_BLE 8770 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8771 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8772 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8773 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8774 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8775 return sm_conn->sm_connection_authorization_state; 8776 } 8777 #endif 8778 8779 #ifdef ENABLE_CLASSIC 8780 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){ 8781 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8782 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8783 conn->sniff_min_interval = sniff_min_interval; 8784 conn->sniff_max_interval = sniff_max_interval; 8785 conn->sniff_attempt = sniff_attempt; 8786 conn->sniff_timeout = sniff_timeout; 8787 hci_run(); 8788 return 0; 8789 } 8790 8791 /** 8792 * @brief Exit Sniff mode 8793 * @param con_handle 8794 @ @return 0 if ok 8795 */ 8796 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8797 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8798 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8799 conn->sniff_min_interval = 0xffff; 8800 hci_run(); 8801 return 0; 8802 } 8803 8804 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){ 8805 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8806 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8807 conn->sniff_subrating_max_latency = max_latency; 8808 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8809 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8810 hci_run(); 8811 return ERROR_CODE_SUCCESS; 8812 } 8813 8814 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){ 8815 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8816 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8817 conn->qos_service_type = service_type; 8818 conn->qos_token_rate = token_rate; 8819 conn->qos_peak_bandwidth = peak_bandwidth; 8820 conn->qos_latency = latency; 8821 conn->qos_delay_variation = delay_variation; 8822 hci_run(); 8823 return ERROR_CODE_SUCCESS; 8824 } 8825 8826 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8827 hci_stack->new_page_scan_interval = page_scan_interval; 8828 hci_stack->new_page_scan_window = page_scan_window; 8829 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8830 hci_run(); 8831 } 8832 8833 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8834 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8835 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8836 hci_run(); 8837 } 8838 8839 void gap_set_page_timeout(uint16_t page_timeout){ 8840 hci_stack->page_timeout = page_timeout; 8841 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8842 hci_run(); 8843 } 8844 8845 #endif 8846 8847 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8848 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8849 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8850 if (le_device_db_index >= le_device_db_max_count()) return; 8851 uint8_t offset = le_device_db_index >> 3; 8852 uint8_t mask = 1 << (le_device_db_index & 7); 8853 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8854 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8855 // note: go back to remove entries, otherwise, a remove + add will skip the add 8856 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8857 } 8858 } 8859 8860 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8861 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8862 if (le_device_db_index >= le_device_db_max_count()) return; 8863 uint8_t offset = le_device_db_index >> 3; 8864 uint8_t mask = 1 << (le_device_db_index & 7); 8865 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8866 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8867 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8868 } 8869 } 8870 8871 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8872 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8873 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8874 } 8875 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8876 // restart le resolving list update 8877 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8878 } 8879 return ERROR_CODE_SUCCESS; 8880 } 8881 #endif 8882 8883 #ifdef ENABLE_BLE 8884 #ifdef ENABLE_LE_CENTRAL 8885 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8886 8887 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8888 // check if already in list 8889 btstack_linked_list_iterator_t it; 8890 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8891 while (btstack_linked_list_iterator_has_next(&it)) { 8892 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8893 if (entry->sid != advertising_sid) { 8894 continue; 8895 } 8896 if (entry->address_type != address_type) { 8897 continue; 8898 } 8899 if (memcmp(entry->address, address, 6) != 0) { 8900 continue; 8901 } 8902 // disallow if already scheduled to add 8903 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8904 return ERROR_CODE_COMMAND_DISALLOWED; 8905 } 8906 // still on controller, but scheduled to remove -> re-add 8907 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8908 return ERROR_CODE_SUCCESS; 8909 } 8910 // alloc and add to list 8911 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8912 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8913 entry->sid = advertising_sid; 8914 entry->address_type = address_type; 8915 (void)memcpy(entry->address, address, 6); 8916 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8917 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8918 return ERROR_CODE_SUCCESS; 8919 } 8920 8921 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8922 btstack_linked_list_iterator_t it; 8923 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8924 while (btstack_linked_list_iterator_has_next(&it)){ 8925 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8926 if (entry->sid != advertising_sid) { 8927 continue; 8928 } 8929 if (entry->address_type != address_type) { 8930 continue; 8931 } 8932 if (memcmp(entry->address, address, 6) != 0) { 8933 continue; 8934 } 8935 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8936 // remove from controller if already present 8937 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8938 } else { 8939 // directly remove entry from whitelist 8940 btstack_linked_list_iterator_remove(&it); 8941 btstack_memory_periodic_advertiser_list_entry_free(entry); 8942 } 8943 return ERROR_CODE_SUCCESS; 8944 } 8945 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8946 } 8947 8948 static void hci_periodic_advertiser_list_clear(void){ 8949 btstack_linked_list_iterator_t it; 8950 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8951 while (btstack_linked_list_iterator_has_next(&it)){ 8952 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8953 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8954 // remove from controller if already present 8955 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8956 continue; 8957 } 8958 // directly remove entry from whitelist 8959 btstack_linked_list_iterator_remove(&it); 8960 btstack_memory_periodic_advertiser_list_entry_free(entry); 8961 } 8962 } 8963 8964 // free all entries unconditionally 8965 static void hci_periodic_advertiser_list_free(void){ 8966 btstack_linked_list_iterator_t lit; 8967 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8968 while (btstack_linked_list_iterator_has_next(&lit)){ 8969 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8970 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8971 btstack_memory_periodic_advertiser_list_entry_free(entry); 8972 } 8973 } 8974 8975 uint8_t gap_periodic_advertiser_list_clear(void){ 8976 hci_periodic_advertiser_list_clear(); 8977 hci_run(); 8978 return ERROR_CODE_SUCCESS; 8979 } 8980 8981 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8982 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8983 if (status){ 8984 return status; 8985 } 8986 hci_run(); 8987 return ERROR_CODE_SUCCESS; 8988 } 8989 8990 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8991 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8992 if (status){ 8993 return status; 8994 } 8995 hci_run(); 8996 return ERROR_CODE_SUCCESS; 8997 } 8998 8999 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9000 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9001 // abort if already active 9002 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9003 return ERROR_CODE_COMMAND_DISALLOWED; 9004 } 9005 // store request 9006 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9007 hci_stack->le_periodic_sync_options = options; 9008 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9009 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9010 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9011 hci_stack->le_periodic_sync_skip = skip; 9012 hci_stack->le_periodic_sync_timeout = sync_timeout; 9013 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9014 9015 hci_run(); 9016 return ERROR_CODE_SUCCESS; 9017 } 9018 9019 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9020 // abort if not requested 9021 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9022 return ERROR_CODE_COMMAND_DISALLOWED; 9023 } 9024 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9025 hci_run(); 9026 return ERROR_CODE_SUCCESS; 9027 } 9028 9029 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9030 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9031 return ERROR_CODE_COMMAND_DISALLOWED; 9032 } 9033 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9034 hci_run(); 9035 return ERROR_CODE_SUCCESS; 9036 } 9037 9038 #endif 9039 #endif 9040 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9041 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id) { 9042 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9043 if (iso_stream == NULL){ 9044 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9045 } else { 9046 iso_stream->iso_type = iso_type; 9047 iso_stream->state = HCI_ISO_STREAM_STATE_REQUESTED; 9048 iso_stream->con_handle = con_handle; 9049 iso_stream->group_id = group_id; 9050 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9051 return ERROR_CODE_SUCCESS; 9052 } 9053 } 9054 9055 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9056 btstack_linked_list_iterator_t it; 9057 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9058 while (btstack_linked_list_iterator_has_next(&it)){ 9059 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9060 if (iso_stream->con_handle == con_handle ) { 9061 return iso_stream; 9062 } 9063 } 9064 return NULL; 9065 } 9066 9067 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9068 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->con_handle, iso_stream->group_id); 9069 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9070 btstack_memory_hci_iso_stream_free(iso_stream); 9071 } 9072 9073 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9074 btstack_linked_list_iterator_t it; 9075 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9076 while (btstack_linked_list_iterator_has_next(&it)){ 9077 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9078 if ((iso_stream->group_id == group_id) && 9079 (iso_stream->iso_type == iso_type)){ 9080 btstack_linked_list_iterator_remove(&it); 9081 btstack_memory_hci_iso_stream_free(iso_stream); 9082 } 9083 } 9084 } 9085 9086 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9087 btstack_linked_list_iterator_t it; 9088 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9089 while (btstack_linked_list_iterator_has_next(&it)){ 9090 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9091 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9092 (iso_stream->group_id == group_id)){ 9093 btstack_linked_list_iterator_remove(&it); 9094 btstack_memory_hci_iso_stream_free(iso_stream); 9095 } 9096 } 9097 } 9098 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9099 btstack_linked_list_iterator_t it; 9100 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9101 while (btstack_linked_list_iterator_has_next(&it)){ 9102 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9103 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9104 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9105 } 9106 } 9107 } 9108 9109 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9110 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9111 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9112 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9113 return (sdu_len_offset + 2 + sdu_len) == size; 9114 } 9115 9116 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9117 if (hci_stack->iso_packet_handler == NULL) { 9118 return; 9119 } 9120 if (size < 4) { 9121 return; 9122 } 9123 9124 // parse header 9125 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9126 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9127 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9128 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9129 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9130 9131 // assert packet is complete 9132 if ((iso_data_len + 4u) != size){ 9133 return; 9134 } 9135 9136 if ((pb_flag & 0x01) == 0){ 9137 if (pb_flag == 0x02){ 9138 // The ISO_Data_Load field contains a header and a complete SDU. 9139 if (hci_iso_sdu_complete(packet, size)) { 9140 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9141 } 9142 } else { 9143 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9144 if (iso_stream == NULL){ 9145 return; 9146 } 9147 if (size > HCI_ISO_PAYLOAD_SIZE){ 9148 return; 9149 } 9150 memcpy(iso_stream->reassembly_buffer, packet, size); 9151 // fix pb_flag 9152 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9153 iso_stream->reassembly_pos = size; 9154 } 9155 } else { 9156 // iso_data_load contains continuation or last fragment of an SDU 9157 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9158 if (ts_flag != 0){ 9159 return; 9160 } 9161 // append fragment 9162 if (iso_stream == NULL){ 9163 return; 9164 } 9165 if (iso_stream->reassembly_pos == 0){ 9166 return; 9167 } 9168 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9169 // reset reassembly buffer 9170 iso_stream->reassembly_pos = 0; 9171 return; 9172 } 9173 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9174 iso_stream->reassembly_pos += iso_data_len; 9175 9176 // deliver if last fragment and SDU complete 9177 if (pb_flag == 0x03){ 9178 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9179 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9180 } 9181 iso_stream->reassembly_pos = 0; 9182 } 9183 } 9184 } 9185 9186 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9187 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9188 uint16_t pos = 0; 9189 event[pos++] = HCI_EVENT_META_GAP; 9190 event[pos++] = 4 + (2 * big->num_bis); 9191 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9192 event[pos++] = status; 9193 event[pos++] = big->big_handle; 9194 event[pos++] = big->num_bis; 9195 uint8_t i; 9196 for (i=0;i<big->num_bis;i++){ 9197 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9198 pos += 2; 9199 } 9200 hci_emit_event(event, pos, 0); 9201 } 9202 9203 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9204 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9205 uint16_t pos = 0; 9206 event[pos++] = HCI_EVENT_META_GAP; 9207 event[pos++] = 4 + (2 * cig->num_cis); 9208 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9209 event[pos++] = status; 9210 event[pos++] = cig->cig_id; 9211 event[pos++] = cig->num_cis; 9212 uint8_t i; 9213 for (i=0;i<cig->num_cis;i++){ 9214 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9215 pos += 2; 9216 } 9217 hci_emit_event(event, pos, 0); 9218 } 9219 9220 static void hci_emit_cis_created(const le_audio_cig_t * cig, uint8_t cis_index, uint8_t status){ 9221 uint8_t event [7]; 9222 uint16_t pos = 0; 9223 event[pos++] = HCI_EVENT_META_GAP; 9224 event[pos++] = 5; 9225 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9226 event[pos++] = status; 9227 event[pos++] = cig->cig_id; 9228 little_endian_store_16(event, pos, cig->cis_con_handles[cis_index]); 9229 pos += 2; 9230 hci_emit_event(event, pos, 0); 9231 } 9232 9233 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9234 uint8_t event [4]; 9235 uint16_t pos = 0; 9236 event[pos++] = HCI_EVENT_META_GAP; 9237 event[pos++] = 2; 9238 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9239 event[pos++] = big->big_handle; 9240 hci_emit_event(event, pos, 0); 9241 } 9242 9243 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9244 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9245 uint16_t pos = 0; 9246 event[pos++] = HCI_EVENT_META_GAP; 9247 event[pos++] = 4; 9248 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9249 event[pos++] = status; 9250 event[pos++] = big_sync->big_handle; 9251 event[pos++] = big_sync->num_bis; 9252 uint8_t i; 9253 for (i=0;i<big_sync->num_bis;i++){ 9254 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9255 pos += 2; 9256 } 9257 hci_emit_event(event, pos, 0); 9258 } 9259 9260 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9261 uint8_t event [4]; 9262 uint16_t pos = 0; 9263 event[pos++] = HCI_EVENT_META_GAP; 9264 event[pos++] = 2; 9265 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9266 event[pos++] = big_handle; 9267 hci_emit_event(event, pos, 0); 9268 } 9269 9270 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9271 uint8_t event[6]; 9272 uint16_t pos = 0; 9273 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9274 event[pos++] = sizeof(event) - 2; 9275 event[pos++] = big->big_handle; 9276 event[pos++] = bis_index; 9277 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9278 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9279 } 9280 9281 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9282 btstack_linked_list_iterator_t it; 9283 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9284 while (btstack_linked_list_iterator_has_next(&it)){ 9285 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9286 if ( big->big_handle == big_handle ) { 9287 return big; 9288 } 9289 } 9290 return NULL; 9291 } 9292 9293 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9294 btstack_linked_list_iterator_t it; 9295 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9296 while (btstack_linked_list_iterator_has_next(&it)){ 9297 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9298 if ( big_sync->big_handle == big_handle ) { 9299 return big_sync; 9300 } 9301 } 9302 return NULL; 9303 } 9304 9305 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9306 hci_stack->iso_packets_to_queue = num_packets; 9307 } 9308 9309 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9310 btstack_linked_list_iterator_t it; 9311 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9312 while (btstack_linked_list_iterator_has_next(&it)){ 9313 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9314 if ( cig->cig_id == cig_id ) { 9315 return cig; 9316 } 9317 } 9318 return NULL; 9319 } 9320 9321 static void hci_iso_notify_can_send_now(void){ 9322 btstack_linked_list_iterator_t it; 9323 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9324 while (btstack_linked_list_iterator_has_next(&it)){ 9325 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9326 // track number completed packet timestamps 9327 if (big->num_completed_timestamp_current_valid){ 9328 big->num_completed_timestamp_current_valid = false; 9329 if (big->num_completed_timestamp_previous_valid){ 9330 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9331 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9332 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9333 big->num_completed_timestamp_previous_ms); 9334 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9335 // to catch up, skip packet on all BIS 9336 uint8_t i; 9337 for (i=0;i<big->num_bis;i++){ 9338 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9339 if (iso_stream){ 9340 iso_stream->num_packets_to_skip++; 9341 } 9342 } 9343 } 9344 } 9345 big->num_completed_timestamp_previous_valid = true; 9346 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9347 } 9348 9349 if (big->can_send_now_requested){ 9350 // check if no outgoing iso packets pending and no can send now have to be emitted 9351 uint8_t i; 9352 bool can_send = true; 9353 uint8_t num_iso_queued_minimum = 0; 9354 for (i=0;i<big->num_bis;i++){ 9355 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9356 if (iso_stream == NULL) continue; 9357 // handle case where individual ISO packet was sent too late: 9358 // for each additionally queued packet, a new one needs to get skipped 9359 if (i==0){ 9360 num_iso_queued_minimum = iso_stream->num_packets_sent; 9361 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9362 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9363 iso_stream->num_packets_to_skip += num_packets_to_skip; 9364 iso_stream->num_packets_sent -= num_packets_to_skip; 9365 } 9366 // check if we can send now 9367 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9368 can_send = false; 9369 break; 9370 } 9371 } 9372 if (can_send){ 9373 // propagate can send now to individual streams 9374 big->can_send_now_requested = false; 9375 for (i=0;i<big->num_bis;i++){ 9376 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9377 iso_stream->emit_ready_to_send = true; 9378 } 9379 } 9380 } 9381 } 9382 9383 if (hci_stack->hci_packet_buffer_reserved) return; 9384 9385 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9386 while (btstack_linked_list_iterator_has_next(&it)){ 9387 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9388 // report bis ready 9389 uint8_t i; 9390 for (i=0;i<big->num_bis;i++){ 9391 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9392 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9393 iso_stream->emit_ready_to_send = false; 9394 hci_emit_bis_can_send_now(big, i); 9395 break; 9396 } 9397 } 9398 } 9399 } 9400 9401 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9402 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9403 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9404 } 9405 if (big_params->num_bis == 0){ 9406 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9407 } 9408 if (big_params->num_bis > MAX_NR_BIS){ 9409 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9410 } 9411 9412 // reserve ISO Streams 9413 uint8_t i; 9414 uint8_t status = ERROR_CODE_SUCCESS; 9415 for (i=0;i<big_params->num_bis;i++){ 9416 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_CON_HANDLE_INVALID, big_params->big_handle); 9417 if (status != ERROR_CODE_SUCCESS) { 9418 break; 9419 } 9420 } 9421 9422 // free structs on error 9423 if (status != ERROR_CODE_SUCCESS){ 9424 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9425 return status; 9426 } 9427 9428 le_audio_big_t * big = storage; 9429 big->big_handle = big_params->big_handle; 9430 big->params = big_params; 9431 big->state = LE_AUDIO_BIG_STATE_CREATE; 9432 big->num_bis = big_params->num_bis; 9433 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9434 9435 hci_run(); 9436 9437 return ERROR_CODE_SUCCESS; 9438 } 9439 9440 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9441 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9442 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9443 } 9444 if (big_sync_params->num_bis == 0){ 9445 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9446 } 9447 if (big_sync_params->num_bis > MAX_NR_BIS){ 9448 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9449 } 9450 9451 le_audio_big_sync_t * big_sync = storage; 9452 big_sync->big_handle = big_sync_params->big_handle; 9453 big_sync->params = big_sync_params; 9454 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9455 big_sync->num_bis = big_sync_params->num_bis; 9456 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9457 9458 hci_run(); 9459 9460 return ERROR_CODE_SUCCESS; 9461 } 9462 9463 uint8_t gap_big_terminate(uint8_t big_handle){ 9464 le_audio_big_t * big = hci_big_for_handle(big_handle); 9465 if (big == NULL){ 9466 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9467 } 9468 switch (big->state){ 9469 case LE_AUDIO_BIG_STATE_CREATE: 9470 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9471 hci_emit_big_terminated(big); 9472 break; 9473 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9474 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9475 break; 9476 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9477 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9478 case LE_AUDIO_BIG_STATE_ACTIVE: 9479 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9480 hci_run(); 9481 break; 9482 default: 9483 return ERROR_CODE_COMMAND_DISALLOWED; 9484 } 9485 return ERROR_CODE_SUCCESS; 9486 } 9487 9488 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9489 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9490 if (big_sync == NULL){ 9491 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9492 } 9493 switch (big_sync->state){ 9494 case LE_AUDIO_BIG_STATE_CREATE: 9495 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9496 hci_emit_big_sync_stopped(big_handle); 9497 break; 9498 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9499 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9500 break; 9501 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9502 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9503 case LE_AUDIO_BIG_STATE_ACTIVE: 9504 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9505 hci_run(); 9506 break; 9507 default: 9508 return ERROR_CODE_COMMAND_DISALLOWED; 9509 } 9510 return ERROR_CODE_SUCCESS; 9511 } 9512 9513 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9514 le_audio_big_t * big = hci_big_for_handle(big_handle); 9515 if (big == NULL){ 9516 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9517 } 9518 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9519 return ERROR_CODE_COMMAND_DISALLOWED; 9520 } 9521 big->can_send_now_requested = true; 9522 hci_iso_notify_can_send_now(); 9523 return ERROR_CODE_SUCCESS; 9524 } 9525 9526 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9527 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9528 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9529 } 9530 if (cig_params->num_cis == 0){ 9531 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9532 } 9533 if (cig_params->num_cis > MAX_NR_BIS){ 9534 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9535 } 9536 9537 // reserve ISO Streams 9538 uint8_t i; 9539 uint8_t status = ERROR_CODE_SUCCESS; 9540 for (i=0;i<cig_params->num_cis;i++){ 9541 status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_CON_HANDLE_INVALID, cig_params->cig_id); 9542 if (status != ERROR_CODE_SUCCESS) { 9543 break; 9544 } 9545 } 9546 9547 // free structs on error 9548 if (status != ERROR_CODE_SUCCESS){ 9549 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 9550 return status; 9551 } 9552 9553 le_audio_cig_t * cig = storage; 9554 cig->cig_id = cig_params->cig_id; 9555 cig->num_cis = cig_params->num_cis; 9556 cig->params = cig_params; 9557 cig->state = LE_AUDIO_CIG_STATE_CREATE; 9558 for (i=0;i<cig->num_cis;i++){ 9559 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 9560 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 9561 } 9562 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 9563 9564 hci_run(); 9565 9566 return ERROR_CODE_SUCCESS; 9567 } 9568 9569 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 9570 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 9571 if (cig == NULL){ 9572 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9573 } 9574 9575 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 9576 return ERROR_CODE_COMMAND_DISALLOWED; 9577 } 9578 9579 // store ACL Connection Handles 9580 uint8_t i; 9581 for (i=0;i<cig->num_cis;i++){ 9582 // check that all con handles exit 9583 hci_con_handle_t cis_handle = cis_con_handles[i]; 9584 uint8_t j; 9585 bool found = false; 9586 for (j=0;j<cig->num_cis;j++){ 9587 if (cig->cis_con_handles[j] == cis_handle){ 9588 cig->acl_con_handles[j] = acl_con_handles[j]; 9589 found = true; 9590 break; 9591 } 9592 } 9593 if (!found){ 9594 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9595 } 9596 } 9597 9598 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 9599 hci_run(); 9600 9601 return ERROR_CODE_SUCCESS; 9602 } 9603 9604 #endif 9605 #endif /* ENABLE_BLE */ 9606 9607 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9608 void hci_setup_test_connections_fuzz(void){ 9609 hci_connection_t * conn; 9610 9611 // default address: 66:55:44:33:00:01 9612 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9613 9614 // setup Controller info 9615 hci_stack->num_cmd_packets = 255; 9616 hci_stack->acl_packets_total_num = 255; 9617 9618 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9619 addr[5] = 0x01; 9620 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9621 conn->con_handle = addr[5]; 9622 conn->role = HCI_ROLE_SLAVE; 9623 conn->state = RECEIVED_CONNECTION_REQUEST; 9624 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9625 9626 // setup incoming Classic SCO connection with con handle 0x0002 9627 addr[5] = 0x02; 9628 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9629 conn->con_handle = addr[5]; 9630 conn->role = HCI_ROLE_SLAVE; 9631 conn->state = RECEIVED_CONNECTION_REQUEST; 9632 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9633 9634 // setup ready Classic ACL connection with con handle 0x0003 9635 addr[5] = 0x03; 9636 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9637 conn->con_handle = addr[5]; 9638 conn->role = HCI_ROLE_SLAVE; 9639 conn->state = OPEN; 9640 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9641 9642 // setup ready Classic SCO connection with con handle 0x0004 9643 addr[5] = 0x04; 9644 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9645 conn->con_handle = addr[5]; 9646 conn->role = HCI_ROLE_SLAVE; 9647 conn->state = OPEN; 9648 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9649 9650 // setup ready LE ACL connection with con handle 0x005 and public address 9651 addr[5] = 0x05; 9652 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9653 conn->con_handle = addr[5]; 9654 conn->role = HCI_ROLE_SLAVE; 9655 conn->state = OPEN; 9656 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9657 conn->sm_connection.sm_connection_encrypted = 1; 9658 } 9659 9660 void hci_free_connections_fuzz(void){ 9661 btstack_linked_list_iterator_t it; 9662 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9663 while (btstack_linked_list_iterator_has_next(&it)){ 9664 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9665 btstack_linked_list_iterator_remove(&it); 9666 btstack_memory_hci_connection_free(con); 9667 } 9668 } 9669 void hci_simulate_working_fuzz(void){ 9670 hci_stack->le_scanning_param_update = false; 9671 hci_init_done(); 9672 hci_stack->num_cmd_packets = 255; 9673 } 9674 #endif 9675