xref: /btstack/src/hci.c (revision fcf88f47f135234f86c69b118c82fa6a5791a30a)
11f504dbdSmatthias.ringwald /*
2a0c35809S[email protected]  * Copyright (C) 2014 BlueKitchen GmbH
31713bceaSmatthias.ringwald  *
41713bceaSmatthias.ringwald  * Redistribution and use in source and binary forms, with or without
51713bceaSmatthias.ringwald  * modification, are permitted provided that the following conditions
61713bceaSmatthias.ringwald  * are met:
71713bceaSmatthias.ringwald  *
81713bceaSmatthias.ringwald  * 1. Redistributions of source code must retain the above copyright
91713bceaSmatthias.ringwald  *    notice, this list of conditions and the following disclaimer.
101713bceaSmatthias.ringwald  * 2. Redistributions in binary form must reproduce the above copyright
111713bceaSmatthias.ringwald  *    notice, this list of conditions and the following disclaimer in the
121713bceaSmatthias.ringwald  *    documentation and/or other materials provided with the distribution.
131713bceaSmatthias.ringwald  * 3. Neither the name of the copyright holders nor the names of
141713bceaSmatthias.ringwald  *    contributors may be used to endorse or promote products derived
151713bceaSmatthias.ringwald  *    from this software without specific prior written permission.
166b64433eSmatthias.ringwald  * 4. Any redistribution, use, or modification is done solely for
176b64433eSmatthias.ringwald  *    personal benefit and not for any commercial purpose or for
186b64433eSmatthias.ringwald  *    monetary gain.
191713bceaSmatthias.ringwald  *
20a0c35809S[email protected]  * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
211713bceaSmatthias.ringwald  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
221713bceaSmatthias.ringwald  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
231713bceaSmatthias.ringwald  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
241713bceaSmatthias.ringwald  * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
251713bceaSmatthias.ringwald  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
261713bceaSmatthias.ringwald  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
271713bceaSmatthias.ringwald  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
281713bceaSmatthias.ringwald  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
291713bceaSmatthias.ringwald  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
301713bceaSmatthias.ringwald  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
311713bceaSmatthias.ringwald  * SUCH DAMAGE.
321713bceaSmatthias.ringwald  *
33a0c35809S[email protected]  * Please inquire about commercial licensing options at
34a0c35809S[email protected]  * [email protected]
356b64433eSmatthias.ringwald  *
361713bceaSmatthias.ringwald  */
371713bceaSmatthias.ringwald 
38e501bae0SMatthias Ringwald #define BTSTACK_FILE__ "hci.c"
39ab2c6ae4SMatthias Ringwald 
401713bceaSmatthias.ringwald /*
411f504dbdSmatthias.ringwald  *  hci.c
421f504dbdSmatthias.ringwald  *
431f504dbdSmatthias.ringwald  *  Created by Matthias Ringwald on 4/29/09.
441f504dbdSmatthias.ringwald  *
451f504dbdSmatthias.ringwald  */
461f504dbdSmatthias.ringwald 
477907f069SMatthias Ringwald #include "btstack_config.h"
4828171530Smatthias.ringwald 
497f2435e6Smatthias.ringwald 
5006b9e820SMatthias Ringwald #ifdef ENABLE_CLASSIC
51aec7654dSMatthias Ringwald #ifdef HAVE_EMBEDDED_TICK
528f2a52f4SMatthias Ringwald #include "btstack_run_loop_embedded.h"
53a484130cSMatthias Ringwald #endif
5406b9e820SMatthias Ringwald #endif
55a484130cSMatthias Ringwald 
564a3574a1SMatthias Ringwald #ifdef HAVE_PLATFORM_IPHONE_OS
57d0b87befSMatthias Ringwald #include "../port/ios/src/btstack_control_iphone.h"
584a3574a1SMatthias Ringwald #endif
594a3574a1SMatthias Ringwald 
60a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
61472a5742SMatthias Ringwald #include "gap.h"
6221debf25SMatthias Ringwald #include "ble/le_device_db.h"
6345c102fdSMatthias Ringwald #endif
6445c102fdSMatthias Ringwald 
6593b8dc03Smatthias.ringwald #include <stdarg.h>
6693b8dc03Smatthias.ringwald #include <string.h>
675838a2edSMatthias Ringwald #include <inttypes.h>
687f2435e6Smatthias.ringwald 
6916ece135SMatthias Ringwald #include "btstack_debug.h"
700e2df43fSMatthias Ringwald #include "btstack_event.h"
714a3574a1SMatthias Ringwald #include "btstack_linked_list.h"
724a3574a1SMatthias Ringwald #include "btstack_memory.h"
7361f37892SMatthias Ringwald #include "bluetooth_company_id.h"
741cfb383eSMatthias Ringwald #include "bluetooth_data_types.h"
754a3574a1SMatthias Ringwald #include "gap.h"
764a3574a1SMatthias Ringwald #include "hci.h"
774a3574a1SMatthias Ringwald #include "hci_cmd.h"
78d8905019Smatthias.ringwald #include "hci_dump.h"
791cfb383eSMatthias Ringwald #include "ad_parser.h"
8093b8dc03Smatthias.ringwald 
812b838201SMatthias Ringwald #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL
822b838201SMatthias Ringwald #ifndef HCI_HOST_ACL_PACKET_NUM
832b838201SMatthias Ringwald #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM"
842b838201SMatthias Ringwald #endif
852b838201SMatthias Ringwald #ifndef HCI_HOST_ACL_PACKET_LEN
862b838201SMatthias Ringwald #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN"
872b838201SMatthias Ringwald #endif
882b838201SMatthias Ringwald #ifndef HCI_HOST_SCO_PACKET_NUM
892b838201SMatthias Ringwald #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM"
902b838201SMatthias Ringwald #endif
912b838201SMatthias Ringwald #ifndef HCI_HOST_SCO_PACKET_LEN
922b838201SMatthias Ringwald #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN"
932b838201SMatthias Ringwald #endif
942b838201SMatthias Ringwald #endif
951b0e3922Smatthias.ringwald 
96aa81e641SMatthias Ringwald #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM)
97aa81e641SMatthias Ringwald #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."
98aa81e641SMatthias Ringwald #endif
99aa81e641SMatthias Ringwald 
1001e20a53eSMatthias Ringwald #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT)
1011e20a53eSMatthias Ringwald #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."
1021e20a53eSMatthias Ringwald #endif
1031e20a53eSMatthias Ringwald 
104169f8b28Smatthias.ringwald #define HCI_CONNECTION_TIMEOUT_MS 10000
10562473419SMatthias Ringwald 
10662473419SMatthias Ringwald #ifndef HCI_RESET_RESEND_TIMEOUT_MS
107659d758cSMatthias Ringwald #define HCI_RESET_RESEND_TIMEOUT_MS 200
10862473419SMatthias Ringwald #endif
109ee091cf1Smatthias.ringwald 
1101cfb383eSMatthias Ringwald // Names are arbitrarily shortened to 32 bytes if not requested otherwise
1111cfb383eSMatthias Ringwald #ifndef GAP_INQUIRY_MAX_NAME_LEN
1121cfb383eSMatthias Ringwald #define GAP_INQUIRY_MAX_NAME_LEN 32
1131cfb383eSMatthias Ringwald #endif
1141cfb383eSMatthias Ringwald 
115f5875de5SMatthias Ringwald // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested
116f5875de5SMatthias Ringwald #define GAP_INQUIRY_DURATION_MIN       0x01
117f5875de5SMatthias Ringwald #define GAP_INQUIRY_DURATION_MAX       0x30
118beb3c81dSMatthias Ringwald #define GAP_INQUIRY_STATE_IDLE         0x00
119beb3c81dSMatthias Ringwald #define GAP_INQUIRY_STATE_W4_ACTIVE    0x80
120beb3c81dSMatthias Ringwald #define GAP_INQUIRY_STATE_ACTIVE       0x81
121beb3c81dSMatthias Ringwald #define GAP_INQUIRY_STATE_W2_CANCEL    0x82
122beb3c81dSMatthias Ringwald #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83
123f5875de5SMatthias Ringwald 
124b7f1ee76SMatthias Ringwald // GAP Remote Name Request
125b7f1ee76SMatthias Ringwald #define GAP_REMOTE_NAME_STATE_IDLE 0
126b7f1ee76SMatthias Ringwald #define GAP_REMOTE_NAME_STATE_W2_SEND 1
127b7f1ee76SMatthias Ringwald #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2
128b7f1ee76SMatthias Ringwald 
1290a51f88bSMatthias Ringwald // GAP Pairing
1300a51f88bSMatthias Ringwald #define GAP_PAIRING_STATE_IDLE                       0
1310a51f88bSMatthias Ringwald #define GAP_PAIRING_STATE_SEND_PIN                   1
1320a51f88bSMatthias Ringwald #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE          2
1330a51f88bSMatthias Ringwald #define GAP_PAIRING_STATE_SEND_PASSKEY               3
1340a51f88bSMatthias Ringwald #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE      4
1350a51f88bSMatthias Ringwald #define GAP_PAIRING_STATE_SEND_CONFIRMATION          5
1360a51f88bSMatthias Ringwald #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6
1370a51f88bSMatthias Ringwald 
1380a51f88bSMatthias Ringwald 
139b83d5eabSMatthias Ringwald // prototypes
14035454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
141758b46ceSmatthias.ringwald static void hci_update_scan_enable(void);
14235454696SMatthias Ringwald static void hci_emit_discoverable_enabled(uint8_t enabled);
14335454696SMatthias Ringwald static int  hci_local_ssp_activated(void);
14435454696SMatthias Ringwald static int  hci_remote_ssp_supported(hci_con_handle_t con_handle);
14567aae551SMatthias Ringwald static bool hci_ssp_supported(hci_connection_t * connection);
14635454696SMatthias Ringwald static void hci_notify_if_sco_can_send_now(void);
14735454696SMatthias Ringwald static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status);
148a00031e2S[email protected] static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection);
14935454696SMatthias Ringwald static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level);
150ec820d77SMatthias Ringwald static void hci_connection_timeout_handler(btstack_timer_source_t *timer);
15196a45072S[email protected] static void hci_connection_timestamp(hci_connection_t *connection);
15252db98b2SMatthias Ringwald static void hci_emit_l2cap_check_timeout(hci_connection_t *conn);
1539784dac1SMatthias Ringwald static void gap_inquiry_explode(uint8_t *packet, uint16_t size);
15452db98b2SMatthias Ringwald #endif
1551cfb383eSMatthias Ringwald 
1567586ee35S[email protected] static int  hci_power_control_on(void);
1577586ee35S[email protected] static void hci_power_control_off(void);
1586da48142SSean Wilson static void hci_state_reset(void);
159fd43c0e0SMatthias Ringwald static void hci_emit_transport_packet_sent(void);
160fc64f94aSMatthias Ringwald static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason);
161b83d5eabSMatthias Ringwald static void hci_emit_nr_connections_changed(void);
162b83d5eabSMatthias Ringwald static void hci_emit_hci_open_failed(void);
163b83d5eabSMatthias Ringwald static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status);
164b83d5eabSMatthias Ringwald static void hci_emit_event(uint8_t * event, uint16_t size, int dump);
165b83d5eabSMatthias Ringwald static void hci_emit_acl_packet(uint8_t * packet, uint16_t size);
16695d71764SMatthias Ringwald static void hci_run(void);
16795d71764SMatthias Ringwald static int  hci_is_le_connection(hci_connection_t * connection);
16895d71764SMatthias Ringwald static int  hci_number_free_acl_slots_for_connection_type( bd_addr_type_t address_type);
1696a5ffed8SMatthias Ringwald 
1706a5ffed8SMatthias Ringwald #ifdef ENABLE_CLASSIC
171f234b250SMatthias Ringwald static int hci_have_usb_transport(void);
1726a5ffed8SMatthias Ringwald #endif
1735d509858SMatthias Ringwald 
174a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
175e8c8828eSMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
17639677e66SMatthias Ringwald // called from test/ble_client/advertising_data_parser.c
177384b59deSMatthias Ringwald void le_handle_advertisement_report(uint8_t *packet, uint16_t size);
178667ba9d1SMatthias Ringwald static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address);
1799c77c9dbSMatthias Ringwald static hci_connection_t * gap_get_outgoing_connection(void);
1805d509858SMatthias Ringwald #endif
181d70217a2SMatthias Ringwald #endif
182758b46ceSmatthias.ringwald 
18306b35ec0Smatthias.ringwald // the STACK is here
1843a9fb326S[email protected] #ifndef HAVE_MALLOC
1853a9fb326S[email protected] static hci_stack_t   hci_stack_static;
1863a9fb326S[email protected] #endif
1873a9fb326S[email protected] static hci_stack_t * hci_stack = NULL;
18816833f0aSmatthias.ringwald 
1891c9e5e9dSMatthias Ringwald #ifdef ENABLE_CLASSIC
19063168530SMatthias Ringwald // default name
19163168530SMatthias Ringwald static const char * default_classic_name = "BTstack 00:00:00:00:00:00";
19263168530SMatthias Ringwald 
19366fb9560S[email protected] // test helper
19466fb9560S[email protected] static uint8_t disable_l2cap_timeouts = 0;
1951c9e5e9dSMatthias Ringwald #endif
19666fb9560S[email protected] 
19796a45072S[email protected] /**
19896a45072S[email protected]  * create connection for given address
19996a45072S[email protected]  *
20096a45072S[email protected]  * @return connection OR NULL, if no memory left
20196a45072S[email protected]  */
202667ba9d1SMatthias Ringwald static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){
2031a06f663S[email protected]     log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type);
204bb69aaaeS[email protected]     hci_connection_t * conn = btstack_memory_hci_connection_get();
20596a45072S[email protected]     if (!conn) return NULL;
206058e3d6bSMatthias Ringwald     bd_addr_copy(conn->address, addr);
2072dceb1d6SMatthias Ringwald     conn->role = HCI_ROLE_INVALID;
20896a45072S[email protected]     conn->address_type = addr_type;
20996a45072S[email protected]     conn->con_handle = 0xffff;
21096a45072S[email protected]     conn->authentication_flags = AUTH_FLAGS_NONE;
21196a45072S[email protected]     conn->bonding_flags = 0;
21296a45072S[email protected]     conn->requested_security_level = LEVEL_0;
21352db98b2SMatthias Ringwald #ifdef ENABLE_CLASSIC
21488a03c8dSMatthias Ringwald     conn->request_role = HCI_ROLE_INVALID;
21591a977e8SMatthias Ringwald     btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler);
21691a977e8SMatthias Ringwald     btstack_run_loop_set_timer_context(&conn->timeout, conn);
21796a45072S[email protected]     hci_connection_timestamp(conn);
21852db98b2SMatthias Ringwald #endif
21996a45072S[email protected]     conn->acl_recombination_length = 0;
22096a45072S[email protected]     conn->acl_recombination_pos = 0;
221ce41473eSMatthias Ringwald     conn->num_packets_sent = 0;
222760b20efSMatthias Ringwald 
223da886c03S[email protected]     conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE;
224b90f6e0aSMatthias Ringwald #ifdef ENABLE_BLE
225b90f6e0aSMatthias Ringwald     conn->le_phy_update_all_phys = 0xff;
226b90f6e0aSMatthias Ringwald #endif
2270f3b27c5SMatthias Ringwald #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS
2280f3b27c5SMatthias Ringwald     conn->le_max_tx_octets = 27;
2290f3b27c5SMatthias Ringwald #endif
230665d90f2SMatthias Ringwald     btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn);
23196a45072S[email protected]     return conn;
23296a45072S[email protected] }
23366fb9560S[email protected] 
234da886c03S[email protected] 
235da886c03S[email protected] /**
236da886c03S[email protected]  * get le connection parameter range
237da886c03S[email protected] *
238da886c03S[email protected]  * @return le connection parameter range struct
239da886c03S[email protected]  */
2404ced4e8cSMatthias Ringwald void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){
2414ced4e8cSMatthias Ringwald     *range = hci_stack->le_connection_parameter_range;
242da886c03S[email protected] }
243da886c03S[email protected] 
244da886c03S[email protected] /**
245da886c03S[email protected]  * set le connection parameter range
246da886c03S[email protected]  *
247da886c03S[email protected]  */
248da886c03S[email protected] 
2494ced4e8cSMatthias Ringwald void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){
2504ced4e8cSMatthias Ringwald     hci_stack->le_connection_parameter_range = *range;
251da886c03S[email protected] }
252da886c03S[email protected] 
253da886c03S[email protected] /**
25473cd8a2aSMatthias Ringwald  * @brief Test if connection parameters are inside in existing rage
25573cd8a2aSMatthias Ringwald  * @param conn_interval_min (unit: 1.25ms)
25673cd8a2aSMatthias Ringwald  * @param conn_interval_max (unit: 1.25ms)
25773cd8a2aSMatthias Ringwald  * @param conn_latency
25873cd8a2aSMatthias Ringwald  * @param supervision_timeout (unit: 10ms)
25973cd8a2aSMatthias Ringwald  * @returns 1 if included
26073cd8a2aSMatthias Ringwald  */
26173cd8a2aSMatthias Ringwald 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){
26273cd8a2aSMatthias Ringwald     if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0;
26373cd8a2aSMatthias Ringwald     if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0;
26473cd8a2aSMatthias Ringwald 
26573cd8a2aSMatthias Ringwald     if (le_conn_latency < existing_range->le_conn_latency_min) return 0;
26673cd8a2aSMatthias Ringwald     if (le_conn_latency > existing_range->le_conn_latency_max) return 0;
26773cd8a2aSMatthias Ringwald 
26873cd8a2aSMatthias Ringwald     if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0;
26973cd8a2aSMatthias Ringwald     if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0;
27073cd8a2aSMatthias Ringwald 
27173cd8a2aSMatthias Ringwald     return 1;
27273cd8a2aSMatthias Ringwald }
27373cd8a2aSMatthias Ringwald 
27473cd8a2aSMatthias Ringwald /**
2752b6ab3e6SMatthias Ringwald  * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it)
2762b6ab3e6SMatthias Ringwald  * @note: default: 1
2772b6ab3e6SMatthias Ringwald  * @param max_peripheral_connections
2782b6ab3e6SMatthias Ringwald  */
279d4e4907bSMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
2802b6ab3e6SMatthias Ringwald void gap_set_max_number_peripheral_connections(int max_peripheral_connections){
2812b6ab3e6SMatthias Ringwald     hci_stack->le_max_number_peripheral_connections = max_peripheral_connections;
2822b6ab3e6SMatthias Ringwald }
283d4e4907bSMatthias Ringwald #endif
2842b6ab3e6SMatthias Ringwald 
2852b6ab3e6SMatthias Ringwald /**
286da886c03S[email protected]  * get hci connections iterator
287da886c03S[email protected]  *
288da886c03S[email protected]  * @return hci connections iterator
289da886c03S[email protected]  */
290da886c03S[email protected] 
291665d90f2SMatthias Ringwald void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){
292665d90f2SMatthias Ringwald     btstack_linked_list_iterator_init(it, &hci_stack->connections);
293da886c03S[email protected] }
294da886c03S[email protected] 
29597addcc5Smatthias.ringwald /**
296ee091cf1Smatthias.ringwald  * get connection for a given handle
297ee091cf1Smatthias.ringwald  *
298ee091cf1Smatthias.ringwald  * @return connection OR NULL, if not found
299ee091cf1Smatthias.ringwald  */
3005061f3afS[email protected] hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){
301665d90f2SMatthias Ringwald     btstack_linked_list_iterator_t it;
302665d90f2SMatthias Ringwald     btstack_linked_list_iterator_init(&it, &hci_stack->connections);
303665d90f2SMatthias Ringwald     while (btstack_linked_list_iterator_has_next(&it)){
304665d90f2SMatthias Ringwald         hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it);
3053ac2fe56S[email protected]         if ( item->con_handle == con_handle ) {
306da886c03S[email protected]             return item;
307ee091cf1Smatthias.ringwald         }
308ee091cf1Smatthias.ringwald     }
309ee091cf1Smatthias.ringwald     return NULL;
310ee091cf1Smatthias.ringwald }
311ee091cf1Smatthias.ringwald 
31296a45072S[email protected] /**
31396a45072S[email protected]  * get connection for given address
31496a45072S[email protected]  *
31596a45072S[email protected]  * @return connection OR NULL, if not found
31696a45072S[email protected]  */
317667ba9d1SMatthias Ringwald hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t  addr, bd_addr_type_t addr_type){
318665d90f2SMatthias Ringwald     btstack_linked_list_iterator_t it;
319665d90f2SMatthias Ringwald     btstack_linked_list_iterator_init(&it, &hci_stack->connections);
320665d90f2SMatthias Ringwald     while (btstack_linked_list_iterator_has_next(&it)){
321665d90f2SMatthias Ringwald         hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it);
32296a45072S[email protected]         if (connection->address_type != addr_type)  continue;
32396a45072S[email protected]         if (memcmp(addr, connection->address, 6) != 0) continue;
32462bda3fbS[email protected]         return connection;
32562bda3fbS[email protected]     }
32662bda3fbS[email protected]     return NULL;
32762bda3fbS[email protected] }
32862bda3fbS[email protected] 
3293e5e0926SMatthias Ringwald inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){
3303e5e0926SMatthias Ringwald     conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags);
3313e5e0926SMatthias Ringwald }
33252db98b2SMatthias Ringwald 
333228e430cSMatthias Ringwald inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){
334228e430cSMatthias Ringwald     conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags);
335228e430cSMatthias Ringwald }
336228e430cSMatthias Ringwald 
33752db98b2SMatthias Ringwald #ifdef ENABLE_CLASSIC
33852db98b2SMatthias Ringwald 
339ee752bb8SMatthias Ringwald #ifdef ENABLE_SCO_OVER_HCI
340ee752bb8SMatthias Ringwald static int hci_number_sco_connections(void){
341ee752bb8SMatthias Ringwald     int connections = 0;
342ee752bb8SMatthias Ringwald     btstack_linked_list_iterator_t it;
343ee752bb8SMatthias Ringwald     btstack_linked_list_iterator_init(&it, &hci_stack->connections);
344ee752bb8SMatthias Ringwald     while (btstack_linked_list_iterator_has_next(&it)){
345ee752bb8SMatthias Ringwald         hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it);
346ee752bb8SMatthias Ringwald         if (connection->address_type != BD_ADDR_TYPE_SCO) continue;
347ee752bb8SMatthias Ringwald         connections++;
348ee752bb8SMatthias Ringwald     }
349ee752bb8SMatthias Ringwald     return connections;
350ee752bb8SMatthias Ringwald }
351ee752bb8SMatthias Ringwald #endif
352ee752bb8SMatthias Ringwald 
353ec820d77SMatthias Ringwald static void hci_connection_timeout_handler(btstack_timer_source_t *timer){
35491a977e8SMatthias Ringwald     hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer);
355aec7654dSMatthias Ringwald #ifdef HAVE_EMBEDDED_TICK
356528a4a3bSMatthias Ringwald     if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){
357c785ef68Smatthias.ringwald         // connections might be timed out
358c785ef68Smatthias.ringwald         hci_emit_l2cap_check_timeout(connection);
359c785ef68Smatthias.ringwald     }
360f316a845SMatthias Ringwald #else
361c1ab6cc1SMatthias Ringwald     if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){
3625f26aadcSMatthias Ringwald         // connections might be timed out
3635f26aadcSMatthias Ringwald         hci_emit_l2cap_check_timeout(connection);
3645f26aadcSMatthias Ringwald     }
3655f26aadcSMatthias Ringwald #endif
366c785ef68Smatthias.ringwald }
367ee091cf1Smatthias.ringwald 
368ee091cf1Smatthias.ringwald static void hci_connection_timestamp(hci_connection_t *connection){
369aec7654dSMatthias Ringwald #ifdef HAVE_EMBEDDED_TICK
370528a4a3bSMatthias Ringwald     connection->timestamp = btstack_run_loop_embedded_get_ticks();
371f316a845SMatthias Ringwald #else
372528a4a3bSMatthias Ringwald     connection->timestamp = btstack_run_loop_get_time_ms();
3735f26aadcSMatthias Ringwald #endif
374ee091cf1Smatthias.ringwald }
375ee091cf1Smatthias.ringwald 
37643bfb1bdSmatthias.ringwald /**
37780ca58a0Smatthias.ringwald  * add authentication flags and reset timer
37896a45072S[email protected]  * @note: assumes classic connection
3792e77e513S[email protected]  * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets
3807fde4af9Smatthias.ringwald  */
3817fde4af9Smatthias.ringwald static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){
3827fde4af9Smatthias.ringwald     bd_addr_t addr;
383724d70a2SMatthias Ringwald     reverse_bd_addr(bd_addr, addr);
384f16129ceSMatthias Ringwald     hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL);
3857fde4af9Smatthias.ringwald     if (conn) {
38628ca2b46S[email protected]         connectionSetAuthenticationFlags(conn, flags);
38780ca58a0Smatthias.ringwald         hci_connection_timestamp(conn);
3887fde4af9Smatthias.ringwald     }
3897fde4af9Smatthias.ringwald }
3907fde4af9Smatthias.ringwald 
39180ca58a0Smatthias.ringwald int  hci_authentication_active_for_handle(hci_con_handle_t handle){
3925061f3afS[email protected]     hci_connection_t * conn = hci_connection_for_handle(handle);
39380ca58a0Smatthias.ringwald     if (!conn) return 0;
3946724cd9eS[email protected]     if (conn->authentication_flags & LEGACY_PAIRING_ACTIVE) return 1;
3956724cd9eS[email protected]     if (conn->authentication_flags & SSP_PAIRING_ACTIVE) return 1;
3966724cd9eS[email protected]     return 0;
39780ca58a0Smatthias.ringwald }
39880ca58a0Smatthias.ringwald 
39915a95bd5SMatthias Ringwald void gap_drop_link_key_for_bd_addr(bd_addr_t addr){
40055597469SMatthias Ringwald     if (!hci_stack->link_key_db) return;
4012bacf595SMatthias Ringwald     log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr));
402a98592bcSMatthias Ringwald     hci_stack->link_key_db->delete_link_key(addr);
403c12e46e7Smatthias.ringwald }
40455597469SMatthias Ringwald 
40555597469SMatthias Ringwald void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){
40655597469SMatthias Ringwald     if (!hci_stack->link_key_db) return;
4072bacf595SMatthias Ringwald     log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type);
40855597469SMatthias Ringwald     hci_stack->link_key_db->put_link_key(addr, link_key, type);
409c12e46e7Smatthias.ringwald }
4101b6fb31bSMatthias Ringwald 
411e8ad470fSMatthias Ringwald bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){
412e8ad470fSMatthias Ringwald 	if (!hci_stack->link_key_db) return false;
41376b0318eSMatthias Ringwald 	int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0;
41476b0318eSMatthias Ringwald 	log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type);
41576b0318eSMatthias Ringwald 	return result;
416e8ad470fSMatthias Ringwald }
417e8ad470fSMatthias Ringwald 
418ceecb9d9SMatthias Ringwald void gap_delete_all_link_keys(void){
419ceecb9d9SMatthias Ringwald     bd_addr_t  addr;
420ceecb9d9SMatthias Ringwald     link_key_t link_key;
421ceecb9d9SMatthias Ringwald     link_key_type_t type;
422ceecb9d9SMatthias Ringwald     btstack_link_key_iterator_t it;
423ceecb9d9SMatthias Ringwald     int ok = gap_link_key_iterator_init(&it);
424ceecb9d9SMatthias Ringwald     if (!ok) {
425ceecb9d9SMatthias Ringwald         log_error("could not initialize iterator");
426ceecb9d9SMatthias Ringwald         return;
427ceecb9d9SMatthias Ringwald     }
428ceecb9d9SMatthias Ringwald     while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){
429ceecb9d9SMatthias Ringwald         gap_drop_link_key_for_bd_addr(addr);
430ceecb9d9SMatthias Ringwald     }
431ceecb9d9SMatthias Ringwald     gap_link_key_iterator_done(&it);
432ceecb9d9SMatthias Ringwald }
433ceecb9d9SMatthias Ringwald 
4341b6fb31bSMatthias Ringwald int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){
4351b6fb31bSMatthias Ringwald     if (!hci_stack->link_key_db) return 0;
4361b6fb31bSMatthias Ringwald     if (!hci_stack->link_key_db->iterator_init) return 0;
4371b6fb31bSMatthias Ringwald     return hci_stack->link_key_db->iterator_init(it);
4381b6fb31bSMatthias Ringwald }
4391b6fb31bSMatthias Ringwald 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){
4401b6fb31bSMatthias Ringwald     if (!hci_stack->link_key_db) return 0;
4411b6fb31bSMatthias Ringwald     return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type);
4421b6fb31bSMatthias Ringwald }
4431b6fb31bSMatthias Ringwald void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){
4441b6fb31bSMatthias Ringwald     if (!hci_stack->link_key_db) return;
4451b6fb31bSMatthias Ringwald     hci_stack->link_key_db->iterator_done(it);
4461b6fb31bSMatthias Ringwald }
44735454696SMatthias Ringwald #endif
448c12e46e7Smatthias.ringwald 
449eb8076ddSMatthias Ringwald static bool hci_is_le_connection_type(bd_addr_type_t address_type){
450eb8076ddSMatthias Ringwald     switch (address_type){
451ce41473eSMatthias Ringwald         case BD_ADDR_TYPE_LE_PUBLIC:
452ce41473eSMatthias Ringwald         case BD_ADDR_TYPE_LE_RANDOM:
453ce41473eSMatthias Ringwald         case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC:
454ce41473eSMatthias Ringwald         case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM:
455eb8076ddSMatthias Ringwald             return true;
456ce41473eSMatthias Ringwald         default:
457eb8076ddSMatthias Ringwald             return false;
458ce41473eSMatthias Ringwald     }
4590bf6344aS[email protected] }
4600bf6344aS[email protected] 
461eb8076ddSMatthias Ringwald static int hci_is_le_connection(hci_connection_t * connection){
462eb8076ddSMatthias Ringwald     return hci_is_le_connection_type(connection->address_type);
463eb8076ddSMatthias Ringwald }
464eb8076ddSMatthias Ringwald 
4657fde4af9Smatthias.ringwald /**
46643bfb1bdSmatthias.ringwald  * count connections
46743bfb1bdSmatthias.ringwald  */
46840d1c7a4Smatthias.ringwald static int nr_hci_connections(void){
46956c253c9Smatthias.ringwald     int count = 0;
470665d90f2SMatthias Ringwald     btstack_linked_item_t *it;
471a0da043fSMatthias Ringwald     for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){
47215a27967SMatthias Ringwald         count++;
47315a27967SMatthias Ringwald     }
47443bfb1bdSmatthias.ringwald     return count;
47543bfb1bdSmatthias.ringwald }
476c8e4258aSmatthias.ringwald 
47795d71764SMatthias Ringwald static int hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){
478ee303eddS[email protected] 
479f04a0c31SMatthias Ringwald     unsigned int num_packets_sent_classic = 0;
480f04a0c31SMatthias Ringwald     unsigned int num_packets_sent_le = 0;
481ee303eddS[email protected] 
482665d90f2SMatthias Ringwald     btstack_linked_item_t *it;
483a0da043fSMatthias Ringwald     for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){
484998906cdSmatthias.ringwald         hci_connection_t * connection = (hci_connection_t *) it;
485ce41473eSMatthias Ringwald         if (hci_is_le_connection(connection)){
486ce41473eSMatthias Ringwald             num_packets_sent_le += connection->num_packets_sent;
487ce41473eSMatthias Ringwald         }
488f16129ceSMatthias Ringwald         if (connection->address_type == BD_ADDR_TYPE_ACL){
489ce41473eSMatthias Ringwald             num_packets_sent_classic += connection->num_packets_sent;
490ee303eddS[email protected]         }
491ee303eddS[email protected]     }
492d999b54eSMatthias Ringwald     log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num);
493ee303eddS[email protected]     int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic;
494ee303eddS[email protected]     int free_slots_le = 0;
495ee303eddS[email protected] 
496ee303eddS[email protected]     if (free_slots_classic < 0){
4979da54300S[email protected]         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);
498998906cdSmatthias.ringwald         return 0;
499998906cdSmatthias.ringwald     }
500ee303eddS[email protected] 
501ee303eddS[email protected]     if (hci_stack->le_acl_packets_total_num){
502ee303eddS[email protected]         // if we have LE slots, they are used
503ee303eddS[email protected]         free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le;
504ee303eddS[email protected]         if (free_slots_le < 0){
5059da54300S[email protected]             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);
506ee303eddS[email protected]             return 0;
507998906cdSmatthias.ringwald         }
508ee303eddS[email protected]     } else {
509ee303eddS[email protected]         // otherwise, classic slots are used for LE, too
510ee303eddS[email protected]         free_slots_classic -= num_packets_sent_le;
511ee303eddS[email protected]         if (free_slots_classic < 0){
5129da54300S[email protected]             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);
513ee303eddS[email protected]             return 0;
514ee303eddS[email protected]         }
515ee303eddS[email protected]     }
516ee303eddS[email protected] 
517ee303eddS[email protected]     switch (address_type){
518ee303eddS[email protected]         case BD_ADDR_TYPE_UNKNOWN:
5192125de09SMatthias Ringwald             log_error("hci_number_free_acl_slots: unknown address type");
520ee303eddS[email protected]             return 0;
521ee303eddS[email protected] 
522f16129ceSMatthias Ringwald         case BD_ADDR_TYPE_ACL:
523ee303eddS[email protected]             return free_slots_classic;
524ee303eddS[email protected] 
525ee303eddS[email protected]         default:
526cb00d3aaS[email protected]            if (hci_stack->le_acl_packets_total_num){
527ee303eddS[email protected]                return free_slots_le;
528ee303eddS[email protected]            }
529cb00d3aaS[email protected]            return free_slots_classic;
530cb00d3aaS[email protected]     }
531998906cdSmatthias.ringwald }
532998906cdSmatthias.ringwald 
5332125de09SMatthias Ringwald int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){
5342125de09SMatthias Ringwald     // get connection type
5352125de09SMatthias Ringwald     hci_connection_t * connection = hci_connection_for_handle(con_handle);
5362125de09SMatthias Ringwald     if (!connection){
5372125de09SMatthias Ringwald         log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle);
5382125de09SMatthias Ringwald         return 0;
5392125de09SMatthias Ringwald     }
5402125de09SMatthias Ringwald     return hci_number_free_acl_slots_for_connection_type(connection->address_type);
5412125de09SMatthias Ringwald }
5422125de09SMatthias Ringwald 
54335454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
544701e3307SMatthias Ringwald static int hci_number_free_sco_slots(void){
545f04a0c31SMatthias Ringwald     unsigned int num_sco_packets_sent  = 0;
546665d90f2SMatthias Ringwald     btstack_linked_item_t *it;
547760b20efSMatthias Ringwald     if (hci_stack->synchronous_flow_control_enabled){
548760b20efSMatthias Ringwald         // explicit flow control
549665d90f2SMatthias Ringwald         for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){
550e35edcc1S[email protected]             hci_connection_t * connection = (hci_connection_t *) it;
551ce41473eSMatthias Ringwald             if (connection->address_type != BD_ADDR_TYPE_SCO) continue;
552ce41473eSMatthias Ringwald             num_sco_packets_sent += connection->num_packets_sent;
553e35edcc1S[email protected]         }
554e35edcc1S[email protected]         if (num_sco_packets_sent > hci_stack->sco_packets_total_num){
555701e3307SMatthias Ringwald             log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num);
55644d0e3d5S[email protected]             return 0;
55744d0e3d5S[email protected]         }
558e35edcc1S[email protected]         return hci_stack->sco_packets_total_num - num_sco_packets_sent;
55949205f5dSMatthias Ringwald     } else {
56049205f5dSMatthias Ringwald         // implicit flow control -- TODO
5616f28d2eeSMatthias Ringwald         int num_ready = 0;
5626f28d2eeSMatthias Ringwald         for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){
5636f28d2eeSMatthias Ringwald             hci_connection_t * connection = (hci_connection_t *) it;
5646f28d2eeSMatthias Ringwald             if (connection->address_type != BD_ADDR_TYPE_SCO) continue;
5656f28d2eeSMatthias Ringwald             if (connection->sco_tx_ready == 0) continue;
5666f28d2eeSMatthias Ringwald             num_ready++;
56749205f5dSMatthias Ringwald         }
5686f28d2eeSMatthias Ringwald         return num_ready;
5696f28d2eeSMatthias Ringwald     }
570e35edcc1S[email protected] }
57135454696SMatthias Ringwald #endif
57244d0e3d5S[email protected] 
5732b838201SMatthias Ringwald // only used to send HCI Host Number Completed Packets
5742b838201SMatthias Ringwald static int hci_can_send_comand_packet_transport(void){
575ac928cc2S[email protected]     if (hci_stack->hci_packet_buffer_reserved) return 0;
576ac928cc2S[email protected] 
577ac928cc2S[email protected]     // check for async hci transport implementations
578ac928cc2S[email protected]     if (hci_stack->hci_transport->can_send_packet_now){
579ac928cc2S[email protected]         if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){
580ac928cc2S[email protected]             return 0;
581ac928cc2S[email protected]         }
582ac928cc2S[email protected]     }
5832b838201SMatthias Ringwald     return 1;
5842b838201SMatthias Ringwald }
585ac928cc2S[email protected] 
5862b838201SMatthias Ringwald // new functions replacing hci_can_send_packet_now[_using_packet_buffer]
5872b838201SMatthias Ringwald int hci_can_send_command_packet_now(void){
5882b838201SMatthias Ringwald     if (hci_can_send_comand_packet_transport() == 0) return 0;
5894ea43905SMatthias Ringwald     return hci_stack->num_cmd_packets > 0u;
590ac928cc2S[email protected] }
591ac928cc2S[email protected] 
5929d04d3a7SMatthias Ringwald static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){
593ac928cc2S[email protected]     // check for async hci transport implementations
5949d04d3a7SMatthias Ringwald     if (!hci_stack->hci_transport->can_send_packet_now) return 1;
5959d04d3a7SMatthias Ringwald     return hci_stack->hci_transport->can_send_packet_now(packet_type);
596ac928cc2S[email protected] }
5979d04d3a7SMatthias Ringwald 
5989d04d3a7SMatthias Ringwald static int hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){
5999d04d3a7SMatthias Ringwald     if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return 0;
6009d04d3a7SMatthias Ringwald     return hci_number_free_acl_slots_for_connection_type(address_type) > 0;
601ac928cc2S[email protected] }
6029d04d3a7SMatthias Ringwald 
6039d04d3a7SMatthias Ringwald int hci_can_send_acl_le_packet_now(void){
6049d04d3a7SMatthias Ringwald     if (hci_stack->hci_packet_buffer_reserved) return 0;
6059d04d3a7SMatthias Ringwald     return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC);
6069d04d3a7SMatthias Ringwald }
6079d04d3a7SMatthias Ringwald 
6089d04d3a7SMatthias Ringwald int hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) {
6099d04d3a7SMatthias Ringwald     if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return 0;
610e79abdd6S[email protected]     return hci_number_free_acl_slots_for_handle(con_handle) > 0;
611ac928cc2S[email protected] }
612ac928cc2S[email protected] 
613ac928cc2S[email protected] int hci_can_send_acl_packet_now(hci_con_handle_t con_handle){
614ac928cc2S[email protected]     if (hci_stack->hci_packet_buffer_reserved) return 0;
615ac928cc2S[email protected]     return hci_can_send_prepared_acl_packet_now(con_handle);
6166b4af23dS[email protected] }
6176b4af23dS[email protected] 
61835454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
61935454696SMatthias Ringwald int hci_can_send_acl_classic_packet_now(void){
62035454696SMatthias Ringwald     if (hci_stack->hci_packet_buffer_reserved) return 0;
621f16129ceSMatthias Ringwald     return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL);
62235454696SMatthias Ringwald }
62335454696SMatthias Ringwald 
624701e3307SMatthias Ringwald int hci_can_send_prepared_sco_packet_now(void){
625d057580eSMatthias Ringwald     if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return 0;
626f234b250SMatthias Ringwald     if (hci_have_usb_transport()){
627f234b250SMatthias Ringwald         return hci_stack->sco_can_send_now;
628f234b250SMatthias Ringwald     } else {
629701e3307SMatthias Ringwald         return hci_number_free_sco_slots() > 0;
63044d0e3d5S[email protected]     }
631f234b250SMatthias Ringwald }
63244d0e3d5S[email protected] 
633701e3307SMatthias Ringwald int hci_can_send_sco_packet_now(void){
634d057580eSMatthias Ringwald     if (hci_stack->hci_packet_buffer_reserved) return 0;
635701e3307SMatthias Ringwald     return hci_can_send_prepared_sco_packet_now();
63644d0e3d5S[email protected] }
63744d0e3d5S[email protected] 
638d057580eSMatthias Ringwald void hci_request_sco_can_send_now_event(void){
639d057580eSMatthias Ringwald     hci_stack->sco_waiting_for_can_send_now = 1;
640d057580eSMatthias Ringwald     hci_notify_if_sco_can_send_now();
641d057580eSMatthias Ringwald }
64235454696SMatthias Ringwald #endif
643d057580eSMatthias Ringwald 
64495d71764SMatthias Ringwald // used for internal checks in l2cap.c
645c8b9416aS[email protected] int hci_is_packet_buffer_reserved(void){
646c8b9416aS[email protected]     return hci_stack->hci_packet_buffer_reserved;
647c8b9416aS[email protected] }
648c8b9416aS[email protected] 
6496b4af23dS[email protected] // reserves outgoing packet buffer. @returns 1 if successful
6506b4af23dS[email protected] int hci_reserve_packet_buffer(void){
6519d14b626S[email protected]     if (hci_stack->hci_packet_buffer_reserved) {
6529d14b626S[email protected]         log_error("hci_reserve_packet_buffer called but buffer already reserved");
6539d14b626S[email protected]         return 0;
6549d14b626S[email protected]     }
6556b4af23dS[email protected]     hci_stack->hci_packet_buffer_reserved = 1;
6566b4af23dS[email protected]     return 1;
6576b4af23dS[email protected] }
6586b4af23dS[email protected] 
65968a0fcf7S[email protected] void hci_release_packet_buffer(void){
66068a0fcf7S[email protected]     hci_stack->hci_packet_buffer_reserved = 0;
66168a0fcf7S[email protected] }
66268a0fcf7S[email protected] 
6636b4af23dS[email protected] // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call
6647f02f414SMatthias Ringwald static int hci_transport_synchronous(void){
6656b4af23dS[email protected]     return hci_stack->hci_transport->can_send_packet_now == NULL;
6666b4af23dS[email protected] }
6676b4af23dS[email protected] 
668452cf3bbS[email protected] static int hci_send_acl_packet_fragments(hci_connection_t *connection){
669452cf3bbS[email protected] 
670452cf3bbS[email protected]     // 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);
671452cf3bbS[email protected] 
672452cf3bbS[email protected]     // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers
673452cf3bbS[email protected]     uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length;
6744ea43905SMatthias Ringwald     if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){
675452cf3bbS[email protected]         max_acl_data_packet_length = hci_stack->le_data_packets_length;
676452cf3bbS[email protected]     }
677452cf3bbS[email protected] 
6780f3b27c5SMatthias Ringwald #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS
679*fcf88f47SMatthias Ringwald     if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){
6800f3b27c5SMatthias Ringwald         max_acl_data_packet_length = connection->le_max_tx_octets;
6810f3b27c5SMatthias Ringwald     }
6820f3b27c5SMatthias Ringwald #endif
683452cf3bbS[email protected] 
684d999b54eSMatthias Ringwald     log_debug("hci_send_acl_packet_fragments entered");
685d999b54eSMatthias Ringwald 
686452cf3bbS[email protected]     int err;
687452cf3bbS[email protected]     // multiple packets could be send on a synchronous HCI transport
688ff3cc4a5SMatthias Ringwald     while (true){
689452cf3bbS[email protected] 
690d999b54eSMatthias Ringwald         log_debug("hci_send_acl_packet_fragments loop entered");
691d999b54eSMatthias Ringwald 
692452cf3bbS[email protected]         // get current data
6934ea43905SMatthias Ringwald         const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u;
694452cf3bbS[email protected]         int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos;
6951979f09cSMatthias Ringwald         bool more_fragments = false;
696452cf3bbS[email protected] 
697452cf3bbS[email protected]         // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length
698452cf3bbS[email protected]         if (current_acl_data_packet_length > max_acl_data_packet_length){
6991979f09cSMatthias Ringwald             more_fragments = true;
700452cf3bbS[email protected]             current_acl_data_packet_length = max_acl_data_packet_length;
701452cf3bbS[email protected]         }
702452cf3bbS[email protected] 
703452cf3bbS[email protected]         // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent)
7044ea43905SMatthias Ringwald         if (acl_header_pos > 0u){
705f8fbdce0SMatthias Ringwald             uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0);
7064ea43905SMatthias Ringwald             handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u);
707f8fbdce0SMatthias Ringwald             little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags);
708452cf3bbS[email protected]         }
709452cf3bbS[email protected] 
710452cf3bbS[email protected]         // update header len
7114ea43905SMatthias Ringwald         little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length);
712452cf3bbS[email protected] 
713452cf3bbS[email protected]         // count packet
714ce41473eSMatthias Ringwald         connection->num_packets_sent++;
7151979f09cSMatthias Ringwald         log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments);
716d999b54eSMatthias Ringwald 
717d999b54eSMatthias Ringwald         // update state for next fragment (if any) as "transport done" might be sent during send_packet already
718d999b54eSMatthias Ringwald         if (more_fragments){
719d999b54eSMatthias Ringwald             // update start of next fragment to send
720d999b54eSMatthias Ringwald             hci_stack->acl_fragmentation_pos += current_acl_data_packet_length;
721d999b54eSMatthias Ringwald         } else {
722d999b54eSMatthias Ringwald             // done
723d999b54eSMatthias Ringwald             hci_stack->acl_fragmentation_pos = 0;
724d999b54eSMatthias Ringwald             hci_stack->acl_fragmentation_total_size = 0;
725d999b54eSMatthias Ringwald         }
726452cf3bbS[email protected] 
727452cf3bbS[email protected]         // send packet
728452cf3bbS[email protected]         uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos];
729452cf3bbS[email protected]         const int size = current_acl_data_packet_length + 4;
7305bb5bc3eS[email protected]         hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size);
73181d2bdb2SMatthias Ringwald         hci_stack->acl_fragmentation_tx_active = 1;
732452cf3bbS[email protected]         err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size);
733452cf3bbS[email protected] 
7341979f09cSMatthias Ringwald         log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments);
735d999b54eSMatthias Ringwald 
736452cf3bbS[email protected]         // done yet?
737452cf3bbS[email protected]         if (!more_fragments) break;
738452cf3bbS[email protected] 
739452cf3bbS[email protected]         // can send more?
740452cf3bbS[email protected]         if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return err;
741452cf3bbS[email protected]     }
742452cf3bbS[email protected] 
743d999b54eSMatthias Ringwald     log_debug("hci_send_acl_packet_fragments loop over");
744452cf3bbS[email protected] 
745d051460cS[email protected]     // release buffer now for synchronous transport
746203bace6S[email protected]     if (hci_transport_synchronous()){
74781d2bdb2SMatthias Ringwald         hci_stack->acl_fragmentation_tx_active = 0;
748452cf3bbS[email protected]         hci_release_packet_buffer();
749fd43c0e0SMatthias Ringwald         hci_emit_transport_packet_sent();
750452cf3bbS[email protected]     }
751452cf3bbS[email protected] 
752452cf3bbS[email protected]     return err;
753452cf3bbS[email protected] }
754452cf3bbS[email protected] 
755826f7347S[email protected] // pre: caller has reserved the packet buffer
756826f7347S[email protected] int hci_send_acl_packet_buffer(int size){
7577856c818Smatthias.ringwald 
758452cf3bbS[email protected]     // log_info("hci_send_acl_packet_buffer size %u", size);
759452cf3bbS[email protected] 
760826f7347S[email protected]     if (!hci_stack->hci_packet_buffer_reserved) {
761826f7347S[email protected]         log_error("hci_send_acl_packet_buffer called without reserving packet buffer");
762826f7347S[email protected]         return 0;
763826f7347S[email protected]     }
764826f7347S[email protected] 
765d713a683S[email protected]     uint8_t * packet = hci_stack->hci_packet_buffer;
766d713a683S[email protected]     hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet);
767d713a683S[email protected] 
768826f7347S[email protected]     // check for free places on Bluetooth module
769d713a683S[email protected]     if (!hci_can_send_prepared_acl_packet_now(con_handle)) {
770826f7347S[email protected]         log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller");
77197b61c7bS[email protected]         hci_release_packet_buffer();
772068b8592SMatthias Ringwald         hci_emit_transport_packet_sent();
77397b61c7bS[email protected]         return BTSTACK_ACL_BUFFERS_FULL;
77497b61c7bS[email protected]     }
7756218e6f1Smatthias.ringwald 
7765061f3afS[email protected]     hci_connection_t *connection = hci_connection_for_handle( con_handle);
77797b61c7bS[email protected]     if (!connection) {
7785fa0b7cfS[email protected]         log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle);
77997b61c7bS[email protected]         hci_release_packet_buffer();
780068b8592SMatthias Ringwald         hci_emit_transport_packet_sent();
78197b61c7bS[email protected]         return 0;
78297b61c7bS[email protected]     }
78352db98b2SMatthias Ringwald 
78452db98b2SMatthias Ringwald #ifdef ENABLE_CLASSIC
78556cf178bSmatthias.ringwald     hci_connection_timestamp(connection);
78652db98b2SMatthias Ringwald #endif
78756cf178bSmatthias.ringwald 
788452cf3bbS[email protected]     // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size);
7897856c818Smatthias.ringwald 
790452cf3bbS[email protected]     // setup data
791452cf3bbS[email protected]     hci_stack->acl_fragmentation_total_size = size;
792452cf3bbS[email protected]     hci_stack->acl_fragmentation_pos = 4;   // start of L2CAP packet
7936218e6f1Smatthias.ringwald 
794452cf3bbS[email protected]     return hci_send_acl_packet_fragments(connection);
795ee091cf1Smatthias.ringwald }
796ee091cf1Smatthias.ringwald 
79735454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
79844d0e3d5S[email protected] // pre: caller has reserved the packet buffer
79944d0e3d5S[email protected] int hci_send_sco_packet_buffer(int size){
80044d0e3d5S[email protected] 
80144d0e3d5S[email protected]     // log_info("hci_send_acl_packet_buffer size %u", size);
80244d0e3d5S[email protected] 
80344d0e3d5S[email protected]     if (!hci_stack->hci_packet_buffer_reserved) {
80444d0e3d5S[email protected]         log_error("hci_send_acl_packet_buffer called without reserving packet buffer");
80544d0e3d5S[email protected]         return 0;
80644d0e3d5S[email protected]     }
80744d0e3d5S[email protected] 
80844d0e3d5S[email protected]     uint8_t * packet = hci_stack->hci_packet_buffer;
8094b3e1e19SMatthias Ringwald 
8104b3e1e19SMatthias Ringwald     // skip checks in loopback mode
8114b3e1e19SMatthias Ringwald     if (!hci_stack->loopback_mode){
81244d0e3d5S[email protected]         hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet);   // same for ACL and SCO
81344d0e3d5S[email protected] 
81444d0e3d5S[email protected]         // check for free places on Bluetooth module
815701e3307SMatthias Ringwald         if (!hci_can_send_prepared_sco_packet_now()) {
816cbf638a9SMatthias Ringwald             log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller");
81744d0e3d5S[email protected]             hci_release_packet_buffer();
818068b8592SMatthias Ringwald             hci_emit_transport_packet_sent();
81944d0e3d5S[email protected]             return BTSTACK_ACL_BUFFERS_FULL;
82044d0e3d5S[email protected]         }
82144d0e3d5S[email protected] 
822e35edcc1S[email protected]         // track send packet in connection struct
823e35edcc1S[email protected]         hci_connection_t *connection = hci_connection_for_handle( con_handle);
824e35edcc1S[email protected]         if (!connection) {
825e35edcc1S[email protected]             log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle);
826e35edcc1S[email protected]             hci_release_packet_buffer();
827068b8592SMatthias Ringwald             hci_emit_transport_packet_sent();
828e35edcc1S[email protected]             return 0;
829e35edcc1S[email protected]         }
830f234b250SMatthias Ringwald 
831f234b250SMatthias Ringwald         if (hci_have_usb_transport()){
832f234b250SMatthias Ringwald             // token used
833f234b250SMatthias Ringwald             hci_stack->sco_can_send_now = 0;
834f234b250SMatthias Ringwald         } else {
835760b20efSMatthias Ringwald             if (hci_stack->synchronous_flow_control_enabled){
836ce41473eSMatthias Ringwald                 connection->num_packets_sent++;
8376f28d2eeSMatthias Ringwald             } else {
838e4157653SMatthias Ringwald                 connection->sco_tx_ready--;
839760b20efSMatthias Ringwald             }
8404b3e1e19SMatthias Ringwald         }
841f234b250SMatthias Ringwald     }
84244d0e3d5S[email protected] 
84344d0e3d5S[email protected]     hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size);
844543e835cSMatthias Ringwald 
84543149fc9SMatthias Ringwald #ifdef HAVE_SCO_TRANSPORT
84643149fc9SMatthias Ringwald     hci_stack->sco_transport->send_packet(packet, size);
84743149fc9SMatthias Ringwald     hci_release_packet_buffer();
84843149fc9SMatthias Ringwald     hci_emit_transport_packet_sent();
84943149fc9SMatthias Ringwald 
85043149fc9SMatthias Ringwald     return 0;
85143149fc9SMatthias Ringwald #else
85243149fc9SMatthias Ringwald     int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size);
853543e835cSMatthias Ringwald     if (hci_transport_synchronous()){
854543e835cSMatthias Ringwald         hci_release_packet_buffer();
855fd43c0e0SMatthias Ringwald         hci_emit_transport_packet_sent();
856543e835cSMatthias Ringwald     }
857543e835cSMatthias Ringwald 
858543e835cSMatthias Ringwald     return err;
85943149fc9SMatthias Ringwald #endif
86044d0e3d5S[email protected] }
86135454696SMatthias Ringwald #endif
86244d0e3d5S[email protected] 
863c3b46f5aSMatthias Ringwald static void acl_handler(uint8_t *packet, uint16_t size){
864e76a89eeS[email protected] 
8657856c818Smatthias.ringwald     // get info
8667856c818Smatthias.ringwald     hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet);
8675061f3afS[email protected]     hci_connection_t *conn      = hci_connection_for_handle(con_handle);
8687856c818Smatthias.ringwald     uint8_t  acl_flags          = READ_ACL_FLAGS(packet);
8697856c818Smatthias.ringwald     uint16_t acl_length         = READ_ACL_LENGTH(packet);
8707856c818Smatthias.ringwald 
8717856c818Smatthias.ringwald     // ignore non-registered handle
8727856c818Smatthias.ringwald     if (!conn){
873c3b46f5aSMatthias Ringwald         log_error("acl_handler called with non-registered handle %u!" , con_handle);
8747856c818Smatthias.ringwald         return;
8757856c818Smatthias.ringwald     }
8767856c818Smatthias.ringwald 
877e76a89eeS[email protected]     // assert packet is complete
8784ea43905SMatthias Ringwald     if ((acl_length + 4u) != size){
879c3b46f5aSMatthias Ringwald         log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4);
880e76a89eeS[email protected]         return;
881e76a89eeS[email protected]     }
882e76a89eeS[email protected] 
88352db98b2SMatthias Ringwald #ifdef ENABLE_CLASSIC
8847856c818Smatthias.ringwald     // update idle timestamp
8857856c818Smatthias.ringwald     hci_connection_timestamp(conn);
88652db98b2SMatthias Ringwald #endif
8877856c818Smatthias.ringwald 
8882b838201SMatthias Ringwald #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL
8892b838201SMatthias Ringwald     hci_stack->host_completed_packets = 1;
8902b838201SMatthias Ringwald     conn->num_packets_completed++;
8912b838201SMatthias Ringwald #endif
8922b838201SMatthias Ringwald 
8937856c818Smatthias.ringwald     // handle different packet types
8944ea43905SMatthias Ringwald     switch (acl_flags & 0x03u) {
8957856c818Smatthias.ringwald 
8967856c818Smatthias.ringwald         case 0x01: // continuation fragment
8977856c818Smatthias.ringwald 
8980ca847afS[email protected]             // sanity checks
8994ea43905SMatthias Ringwald             if (conn->acl_recombination_pos == 0u) {
9009da54300S[email protected]                 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle);
9017856c818Smatthias.ringwald                 return;
9027856c818Smatthias.ringwald             }
9034ea43905SMatthias Ringwald             if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){
9040ca847afS[email protected]                 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x",
9050ca847afS[email protected]                     conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle);
9060ca847afS[email protected]                 conn->acl_recombination_pos = 0;
9070ca847afS[email protected]                 return;
9080ca847afS[email protected]             }
9097856c818Smatthias.ringwald 
9107856c818Smatthias.ringwald             // append fragment payload (header already stored)
9116535961aSMatthias Ringwald             (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos],
9126535961aSMatthias Ringwald                          &packet[4], acl_length);
9137856c818Smatthias.ringwald             conn->acl_recombination_pos += acl_length;
9147856c818Smatthias.ringwald 
9157856c818Smatthias.ringwald             // forward complete L2CAP packet if complete.
9164ea43905SMatthias Ringwald             if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header
917d6b06661SMatthias Ringwald                 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos);
9187856c818Smatthias.ringwald                 // reset recombination buffer
9197856c818Smatthias.ringwald                 conn->acl_recombination_length = 0;
9207856c818Smatthias.ringwald                 conn->acl_recombination_pos = 0;
9217856c818Smatthias.ringwald             }
9227856c818Smatthias.ringwald             break;
9237856c818Smatthias.ringwald 
9247856c818Smatthias.ringwald         case 0x02: { // first fragment
9257856c818Smatthias.ringwald 
92623a77e1aS[email protected]             // sanity check
92723a77e1aS[email protected]             if (conn->acl_recombination_pos) {
92823a77e1aS[email protected]                 log_error( "ACL First Fragment but data in buffer for handle 0x%02x, dropping stale fragments", con_handle);
92923a77e1aS[email protected]                 conn->acl_recombination_pos = 0;
93023a77e1aS[email protected]             }
93123a77e1aS[email protected] 
9327856c818Smatthias.ringwald             // peek into L2CAP packet!
9337856c818Smatthias.ringwald             uint16_t l2cap_length = READ_L2CAP_LENGTH( packet );
9347856c818Smatthias.ringwald 
9357856c818Smatthias.ringwald             // compare fragment size to L2CAP packet size
9364ea43905SMatthias Ringwald             if (acl_length >= (l2cap_length + 4u)){
9377856c818Smatthias.ringwald                 // forward fragment as L2CAP packet
9384ea43905SMatthias Ringwald                 hci_emit_acl_packet(packet, acl_length + 4u);
9397856c818Smatthias.ringwald             } else {
9400ca847afS[email protected] 
9410ca847afS[email protected]                 if (acl_length > HCI_ACL_BUFFER_SIZE){
9420ca847afS[email protected]                     log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x",
9430ca847afS[email protected]                         4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle);
9440ca847afS[email protected]                     return;
9450ca847afS[email protected]                 }
9460ca847afS[email protected] 
9477856c818Smatthias.ringwald                 // store first fragment and tweak acl length for complete package
9486535961aSMatthias Ringwald                 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE],
9494ea43905SMatthias Ringwald                              packet, acl_length + 4u);
9504ea43905SMatthias Ringwald                 conn->acl_recombination_pos    = acl_length + 4u;
9517856c818Smatthias.ringwald                 conn->acl_recombination_length = l2cap_length;
9524ea43905SMatthias Ringwald                 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u);
9537856c818Smatthias.ringwald             }
9547856c818Smatthias.ringwald             break;
9557856c818Smatthias.ringwald 
9567856c818Smatthias.ringwald         }
9577856c818Smatthias.ringwald         default:
958c3b46f5aSMatthias Ringwald             log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03);
9597856c818Smatthias.ringwald             return;
9607856c818Smatthias.ringwald     }
96194ab26f8Smatthias.ringwald 
96294ab26f8Smatthias.ringwald     // execute main loop
96394ab26f8Smatthias.ringwald     hci_run();
96416833f0aSmatthias.ringwald }
96522909952Smatthias.ringwald 
96667a3e8ecSmatthias.ringwald static void hci_shutdown_connection(hci_connection_t *conn){
9679da54300S[email protected]     log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address));
9683c4d4b90Smatthias.ringwald 
969b3264428SMatthias Ringwald #ifdef ENABLE_CLASSIC
970cb70c5abSMatthias Ringwald #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT)
971cb70c5abSMatthias Ringwald     bd_addr_type_t addr_type = conn->address_type;
972cb70c5abSMatthias Ringwald #endif
973cb70c5abSMatthias Ringwald #ifdef HAVE_SCO_TRANSPORT
974cb70c5abSMatthias Ringwald     hci_con_handle_t con_handle = conn->con_handle;
975ee752bb8SMatthias Ringwald #endif
976b3264428SMatthias Ringwald #endif
977ee752bb8SMatthias Ringwald 
978528a4a3bSMatthias Ringwald     btstack_run_loop_remove_timer(&conn->timeout);
979c785ef68Smatthias.ringwald 
980665d90f2SMatthias Ringwald     btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn);
981a3b02b71Smatthias.ringwald     btstack_memory_hci_connection_free( conn );
9823c4d4b90Smatthias.ringwald 
9833c4d4b90Smatthias.ringwald     // now it's gone
984c7e0c5f6Smatthias.ringwald     hci_emit_nr_connections_changed();
985ee752bb8SMatthias Ringwald 
986b3264428SMatthias Ringwald #ifdef ENABLE_CLASSIC
987034e9b53SMatthias Ringwald #ifdef ENABLE_SCO_OVER_HCI
988ee752bb8SMatthias Ringwald     // update SCO
989cb70c5abSMatthias Ringwald     if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){
990ee752bb8SMatthias Ringwald         hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections());
991ee752bb8SMatthias Ringwald     }
992034e9b53SMatthias Ringwald #endif
993cb70c5abSMatthias Ringwald #ifdef HAVE_SCO_TRANSPORT
994cb70c5abSMatthias Ringwald     if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){
995cb70c5abSMatthias Ringwald         hci_stack->sco_transport->close(con_handle);
996cb70c5abSMatthias Ringwald     }
997cb70c5abSMatthias Ringwald #endif
998b3264428SMatthias Ringwald #endif
999c7e0c5f6Smatthias.ringwald }
1000c7e0c5f6Smatthias.ringwald 
100135454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
100235454696SMatthias Ringwald 
10030c042179S[email protected] static const uint16_t packet_type_sizes[] = {
10048f8108aaSmatthias.ringwald     0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE,
10058f8108aaSmatthias.ringwald     HCI_ACL_DH1_SIZE, 0, 0, 0,
10068f8108aaSmatthias.ringwald     HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE,
10078f8108aaSmatthias.ringwald     HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE
10088f8108aaSmatthias.ringwald };
100965389bfcS[email protected] static const uint8_t  packet_type_feature_requirement_bit[] = {
101065389bfcS[email protected]      0, // 3 slot packets
101165389bfcS[email protected]      1, // 5 slot packets
101265389bfcS[email protected]     25, // EDR 2 mpbs
101365389bfcS[email protected]     26, // EDR 3 mbps
101465389bfcS[email protected]     39, // 3 slot EDR packts
101565389bfcS[email protected]     40, // 5 slot EDR packet
101665389bfcS[email protected] };
101765389bfcS[email protected] static const uint16_t packet_type_feature_packet_mask[] = {
101865389bfcS[email protected]     0x0f00, // 3 slot packets
101965389bfcS[email protected]     0xf000, // 5 slot packets
102065389bfcS[email protected]     0x1102, // EDR 2 mpbs
102165389bfcS[email protected]     0x2204, // EDR 3 mbps
102265389bfcS[email protected]     0x0300, // 3 slot EDR packts
102365389bfcS[email protected]     0x3000, // 5 slot EDR packet
102465389bfcS[email protected] };
10258f8108aaSmatthias.ringwald 
102665389bfcS[email protected] static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){
102765389bfcS[email protected]     // enable packet types based on size
10288f8108aaSmatthias.ringwald     uint16_t packet_types = 0;
1029f16a69bbS[email protected]     unsigned int i;
10308f8108aaSmatthias.ringwald     for (i=0;i<16;i++){
10318f8108aaSmatthias.ringwald         if (packet_type_sizes[i] == 0) continue;
10328f8108aaSmatthias.ringwald         if (packet_type_sizes[i] <= buffer_size){
10338f8108aaSmatthias.ringwald             packet_types |= 1 << i;
10348f8108aaSmatthias.ringwald         }
10358f8108aaSmatthias.ringwald     }
103665389bfcS[email protected]     // disable packet types due to missing local supported features
103765389bfcS[email protected]     for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){
1038f04a0c31SMatthias Ringwald         unsigned int bit_idx = packet_type_feature_requirement_bit[i];
103965389bfcS[email protected]         int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0;
104065389bfcS[email protected]         if (feature_set) continue;
104165389bfcS[email protected]         log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]);
104265389bfcS[email protected]         packet_types &= ~packet_type_feature_packet_mask[i];
104365389bfcS[email protected]     }
10448f8108aaSmatthias.ringwald     // flip bits for "may not be used"
10458f8108aaSmatthias.ringwald     packet_types ^= 0x3306;
10468f8108aaSmatthias.ringwald     return packet_types;
10478f8108aaSmatthias.ringwald }
10488f8108aaSmatthias.ringwald 
10498f8108aaSmatthias.ringwald uint16_t hci_usable_acl_packet_types(void){
10503a9fb326S[email protected]     return hci_stack->packet_types;
10518f8108aaSmatthias.ringwald }
105235454696SMatthias Ringwald #endif
10538f8108aaSmatthias.ringwald 
1054facf93fdS[email protected] uint8_t* hci_get_outgoing_packet_buffer(void){
10557dc17943Smatthias.ringwald     // hci packet buffer is >= acl data packet length
10563a9fb326S[email protected]     return hci_stack->hci_packet_buffer;
10577dc17943Smatthias.ringwald }
10587dc17943Smatthias.ringwald 
1059f5d8d141S[email protected] uint16_t hci_max_acl_data_packet_length(void){
10603a9fb326S[email protected]     return hci_stack->acl_data_packet_length;
10617dc17943Smatthias.ringwald }
10627dc17943Smatthias.ringwald 
106306b9e820SMatthias Ringwald #ifdef ENABLE_CLASSIC
10643e68d23dSMatthias Ringwald int hci_extended_sco_link_supported(void){
10653e68d23dSMatthias Ringwald     // No. 31, byte 3, bit 7
10663e68d23dSMatthias Ringwald     return (hci_stack->local_supported_features[3] & (1 << 7)) != 0;
10673e68d23dSMatthias Ringwald }
106806b9e820SMatthias Ringwald #endif
10693e68d23dSMatthias Ringwald 
10706ac9a97eS[email protected] int hci_non_flushable_packet_boundary_flag_supported(void){
10716ac9a97eS[email protected]     // No. 54, byte 6, bit 6
10724ea43905SMatthias Ringwald     return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u;
10736ac9a97eS[email protected] }
10746ac9a97eS[email protected] 
107515a95bd5SMatthias Ringwald static int gap_ssp_supported(void){
10766ac9a97eS[email protected]     // No. 51, byte 6, bit 3
10774ea43905SMatthias Ringwald     return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u;
1078f5d8d141S[email protected] }
1079f5d8d141S[email protected] 
10807f02f414SMatthias Ringwald static int hci_classic_supported(void){
108135454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
10826ac9a97eS[email protected]     // No. 37, byte 4, bit 5, = No BR/EDR Support
10833a9fb326S[email protected]     return (hci_stack->local_supported_features[4] & (1 << 5)) == 0;
108435454696SMatthias Ringwald #else
108535454696SMatthias Ringwald     return 0;
108635454696SMatthias Ringwald #endif
1087f5d8d141S[email protected] }
1088f5d8d141S[email protected] 
10897f02f414SMatthias Ringwald static int hci_le_supported(void){
1090a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
10916ac9a97eS[email protected]     // No. 37, byte 4, bit 6 = LE Supported (Controller)
10924ea43905SMatthias Ringwald     return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u;
1093f5d8d141S[email protected] #else
1094f5d8d141S[email protected]     return 0;
1095f5d8d141S[email protected] #endif
1096f5d8d141S[email protected] }
1097f5d8d141S[email protected] 
1098b95a5a35SMatthias Ringwald #ifdef ENABLE_BLE
1099b95a5a35SMatthias Ringwald 
1100b95a5a35SMatthias Ringwald /**
1101b95a5a35SMatthias Ringwald  * @brief Get addr type and address used for LE in Advertisements, Scan Responses,
1102b95a5a35SMatthias Ringwald  */
1103b95a5a35SMatthias Ringwald void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){
1104b95a5a35SMatthias Ringwald     *addr_type = hci_stack->le_own_addr_type;
1105b95a5a35SMatthias Ringwald     if (hci_stack->le_own_addr_type){
11066535961aSMatthias Ringwald         (void)memcpy(addr, hci_stack->le_random_address, 6);
110769a97523S[email protected]     } else {
11086535961aSMatthias Ringwald         (void)memcpy(addr, hci_stack->local_bd_addr, 6);
110969a97523S[email protected]     }
111069a97523S[email protected] }
111169a97523S[email protected] 
1112e8c8828eSMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
1113384b59deSMatthias Ringwald void le_handle_advertisement_report(uint8_t *packet, uint16_t size){
11149ec2630cSMatthias Ringwald 
1115d1dc057bS[email protected]     int offset = 3;
1116d1dc057bS[email protected]     int num_reports = packet[offset];
1117d1dc057bS[email protected]     offset += 1;
1118d1dc057bS[email protected] 
111957c9da5bS[email protected]     int i;
11204f4e0224SMatthias Ringwald     // log_info("HCI: handle adv report with num reports: %d", num_reports);
112103fbe9c6S[email protected]     uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var
1122a1df452eSMatthias Ringwald     for (i=0; (i<num_reports) && (offset < size);i++){
112333e6948bSMatthias Ringwald         // sanity checks on data_length:
112433e6948bSMatthias Ringwald         uint8_t data_length = packet[offset + 8];
112533e6948bSMatthias Ringwald         if (data_length > LE_ADVERTISING_DATA_SIZE) return;
11264ea43905SMatthias Ringwald         if ((offset + 9u + data_length + 1u) > size)    return;
112733e6948bSMatthias Ringwald         // setup event
11284ea43905SMatthias Ringwald         uint8_t event_size = 10u + data_length;
1129d1dc057bS[email protected]         int pos = 0;
1130045013feSMatthias Ringwald         event[pos++] = GAP_EVENT_ADVERTISING_REPORT;
113157c9da5bS[email protected]         event[pos++] = event_size;
11326535961aSMatthias Ringwald         (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address
1133d1dc057bS[email protected]         offset += 8;
1134d1dc057bS[email protected]         pos += 8;
1135d1dc057bS[email protected]         event[pos++] = packet[offset + 1 + data_length]; // rssi
113633e6948bSMatthias Ringwald         event[pos++] = data_length;
113733e6948bSMatthias Ringwald         offset++;
11386535961aSMatthias Ringwald         (void)memcpy(&event[pos], &packet[offset], data_length);
113957c9da5bS[email protected]         pos +=    data_length;
11404ea43905SMatthias Ringwald         offset += data_length + 1u; // rssi
1141d6b06661SMatthias Ringwald         hci_emit_event(event, pos, 1);
114257c9da5bS[email protected]     }
114357c9da5bS[email protected] }
1144b2f949feS[email protected] #endif
1145e8c8828eSMatthias Ringwald #endif
114657c9da5bS[email protected] 
11472b6ab3e6SMatthias Ringwald #ifdef ENABLE_BLE
11482b6ab3e6SMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
1149bbc366e6SMatthias Ringwald static void hci_update_advertisements_enabled_for_current_roles(void){
1150bbc366e6SMatthias Ringwald     if (hci_stack->le_advertisements_enabled){
11512b6ab3e6SMatthias Ringwald         // get number of active le slave connections
11522b6ab3e6SMatthias Ringwald         int num_slave_connections = 0;
11532b6ab3e6SMatthias Ringwald         btstack_linked_list_iterator_t it;
11542b6ab3e6SMatthias Ringwald         btstack_linked_list_iterator_init(&it, &hci_stack->connections);
11552b6ab3e6SMatthias Ringwald         while (btstack_linked_list_iterator_has_next(&it)){
11562b6ab3e6SMatthias Ringwald             hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it);
11572b6ab3e6SMatthias Ringwald             log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con));
11582b6ab3e6SMatthias Ringwald             if (con->state != OPEN) continue;
11592b6ab3e6SMatthias Ringwald             if (con->role  != HCI_ROLE_SLAVE) continue;
11602b6ab3e6SMatthias Ringwald             if (!hci_is_le_connection(con)) continue;
11612b6ab3e6SMatthias Ringwald             num_slave_connections++;
11622b6ab3e6SMatthias Ringwald         }
11632b6ab3e6SMatthias Ringwald         log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections);
1164bbc366e6SMatthias Ringwald         hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections;
1165bbc366e6SMatthias Ringwald     } else {
1166bbc366e6SMatthias Ringwald         hci_stack->le_advertisements_enabled_for_current_roles = false;
11672b6ab3e6SMatthias Ringwald     }
11682b6ab3e6SMatthias Ringwald }
11692b6ab3e6SMatthias Ringwald #endif
11702b6ab3e6SMatthias Ringwald #endif
11712b6ab3e6SMatthias Ringwald 
1172cd77dd38SMatthias Ringwald #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API)
117306b9e820SMatthias Ringwald 
117496b53536SMatthias Ringwald static uint32_t hci_transport_uart_get_main_baud_rate(void){
117596b53536SMatthias Ringwald     if (!hci_stack->config) return 0;
11769796ebeaSMatthias Ringwald     uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main;
117796b53536SMatthias Ringwald     // Limit baud rate for Broadcom chipsets to 3 mbps
1178a1df452eSMatthias Ringwald     if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){
117996b53536SMatthias Ringwald         baud_rate = 3000000;
118096b53536SMatthias Ringwald     }
118196b53536SMatthias Ringwald     return baud_rate;
118296b53536SMatthias Ringwald }
118396b53536SMatthias Ringwald 
1184ec820d77SMatthias Ringwald static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){
11859ec2630cSMatthias Ringwald     UNUSED(ds);
11869ec2630cSMatthias Ringwald 
11870305bdeaSMatthias Ringwald     switch (hci_stack->substate){
11880305bdeaSMatthias Ringwald         case HCI_INIT_W4_SEND_RESET:
11897b0d7667SMatthias Ringwald             log_info("Resend HCI Reset");
11900305bdeaSMatthias Ringwald             hci_stack->substate = HCI_INIT_SEND_RESET;
11917b0d7667SMatthias Ringwald             hci_stack->num_cmd_packets = 1;
11920305bdeaSMatthias Ringwald             hci_run();
11930305bdeaSMatthias Ringwald             break;
11949f007422SMatthias Ringwald         case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET:
11959f007422SMatthias Ringwald             log_info("Resend HCI Reset - CSR Warm Boot with Link Reset");
11969f007422SMatthias Ringwald             if (hci_stack->hci_transport->reset_link){
11979f007422SMatthias Ringwald                 hci_stack->hci_transport->reset_link();
11989f007422SMatthias Ringwald             }
1199cf373d3aSMatthias Ringwald 
1200cf373d3aSMatthias Ringwald             /* fall through */
1201cf373d3aSMatthias Ringwald 
1202e47e68c7SMatthias Ringwald         case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT:
1203e47e68c7SMatthias Ringwald             log_info("Resend HCI Reset - CSR Warm Boot");
1204e47e68c7SMatthias Ringwald             hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT;
1205e47e68c7SMatthias Ringwald             hci_stack->num_cmd_packets = 1;
1206e47e68c7SMatthias Ringwald             hci_run();
1207688c2635SMatthias Ringwald             break;
12087224be7eSMatthias Ringwald         case HCI_INIT_W4_SEND_BAUD_CHANGE:
12097224be7eSMatthias Ringwald             if (hci_stack->hci_transport->set_baudrate){
121096b53536SMatthias Ringwald                 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate();
1211cd724cb7SMatthias Ringwald                 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate);
12127dd9d0ecSMatthias Ringwald                 hci_stack->hci_transport->set_baudrate(baud_rate);
12137224be7eSMatthias Ringwald             }
1214834bce8cSMatthias Ringwald             // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP
121561f37892SMatthias Ringwald             if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){
1216834bce8cSMatthias Ringwald                 if (hci_stack->hci_transport->reset_link){
1217834bce8cSMatthias Ringwald                     log_info("Link Reset");
1218834bce8cSMatthias Ringwald                     hci_stack->hci_transport->reset_link();
1219834bce8cSMatthias Ringwald                 }
1220772a36d3SMatthias Ringwald                 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT;
1221772a36d3SMatthias Ringwald                 hci_run();
1222772a36d3SMatthias Ringwald             }
12234696bddbSMatthias Ringwald             break;
1224559961d0SMatthias Ringwald         case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY:
1225559961d0SMatthias Ringwald             // otherwise continue
1226559961d0SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS;
1227559961d0SMatthias Ringwald             hci_send_cmd(&hci_read_local_supported_commands);
1228559961d0SMatthias Ringwald             break;
12290305bdeaSMatthias Ringwald         default:
12300305bdeaSMatthias Ringwald             break;
12310305bdeaSMatthias Ringwald     }
12320305bdeaSMatthias Ringwald }
123306b9e820SMatthias Ringwald #endif
12340305bdeaSMatthias Ringwald 
123571de195eSMatthias Ringwald static void hci_initializing_next_state(void){
123674b323a9SMatthias Ringwald     hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1);
123774b323a9SMatthias Ringwald }
123874b323a9SMatthias Ringwald 
123974b323a9SMatthias Ringwald // assumption: hci_can_send_command_packet_now() == true
124071de195eSMatthias Ringwald static void hci_initializing_run(void){
1241148ca237SMatthias Ringwald     log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now());
124274b323a9SMatthias Ringwald     switch (hci_stack->substate){
124374b323a9SMatthias Ringwald         case HCI_INIT_SEND_RESET:
124474b323a9SMatthias Ringwald             hci_state_reset();
1245a0cf2f3fSMatthias Ringwald 
124606b9e820SMatthias Ringwald #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API)
12470305bdeaSMatthias Ringwald             // prepare reset if command complete not received in 100ms
1248659d758cSMatthias Ringwald             btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS);
1249528a4a3bSMatthias Ringwald             btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler);
1250528a4a3bSMatthias Ringwald             btstack_run_loop_add_timer(&hci_stack->timeout);
1251a0cf2f3fSMatthias Ringwald #endif
12520305bdeaSMatthias Ringwald             // send command
125374b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_SEND_RESET;
12540305bdeaSMatthias Ringwald             hci_send_cmd(&hci_reset);
125574b323a9SMatthias Ringwald             break;
125676fcb19bSMatthias Ringwald         case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION:
125776fcb19bSMatthias Ringwald             hci_send_cmd(&hci_read_local_version_information);
125876fcb19bSMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION;
125976fcb19bSMatthias Ringwald             break;
1260e90bae01SMatthias Ringwald         case HCI_INIT_SEND_READ_LOCAL_NAME:
1261e90bae01SMatthias Ringwald             hci_send_cmd(&hci_read_local_name);
1262e90bae01SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME;
1263e90bae01SMatthias Ringwald             break;
126406b9e820SMatthias Ringwald 
126506b9e820SMatthias Ringwald #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API)
1266e47e68c7SMatthias Ringwald         case HCI_INIT_SEND_RESET_CSR_WARM_BOOT:
1267e47e68c7SMatthias Ringwald             hci_state_reset();
1268e47e68c7SMatthias Ringwald             // prepare reset if command complete not received in 100ms
1269659d758cSMatthias Ringwald             btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS);
1270528a4a3bSMatthias Ringwald             btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler);
1271528a4a3bSMatthias Ringwald             btstack_run_loop_add_timer(&hci_stack->timeout);
1272e47e68c7SMatthias Ringwald             // send command
1273e47e68c7SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT;
1274e47e68c7SMatthias Ringwald             hci_send_cmd(&hci_reset);
1275e47e68c7SMatthias Ringwald             break;
12768d29070eSMatthias Ringwald         case HCI_INIT_SEND_RESET_ST_WARM_BOOT:
12778d29070eSMatthias Ringwald             hci_state_reset();
12788d29070eSMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT;
12798d29070eSMatthias Ringwald             hci_send_cmd(&hci_reset);
12808d29070eSMatthias Ringwald             break;
1281fab26ab3SMatthias Ringwald         case HCI_INIT_SEND_BAUD_CHANGE: {
128296b53536SMatthias Ringwald             uint32_t baud_rate = hci_transport_uart_get_main_baud_rate();
12833fb36a29SMatthias Ringwald             hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer);
1284f8fbdce0SMatthias Ringwald             hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0);
128574b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE;
12864ea43905SMatthias Ringwald             hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]);
12874696bddbSMatthias Ringwald             // STLC25000D: baudrate change happens within 0.5 s after command was send,
12884696bddbSMatthias Ringwald             // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial)
128961f37892SMatthias Ringwald             if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){
1290659d758cSMatthias Ringwald                 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS);
1291528a4a3bSMatthias Ringwald                 btstack_run_loop_add_timer(&hci_stack->timeout);
12924696bddbSMatthias Ringwald             }
129374b323a9SMatthias Ringwald             break;
1294fab26ab3SMatthias Ringwald         }
1295fab26ab3SMatthias Ringwald         case HCI_INIT_SEND_BAUD_CHANGE_BCM: {
129696b53536SMatthias Ringwald             uint32_t baud_rate = hci_transport_uart_get_main_baud_rate();
12973fb36a29SMatthias Ringwald             hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer);
1298f8fbdce0SMatthias Ringwald             hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0);
1299eb3a5314SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM;
13004ea43905SMatthias Ringwald             hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]);
1301eb3a5314SMatthias Ringwald             break;
1302fab26ab3SMatthias Ringwald         }
130374b323a9SMatthias Ringwald         case HCI_INIT_CUSTOM_INIT:
130474b323a9SMatthias Ringwald             // Custom initialization
13053fb36a29SMatthias Ringwald             if (hci_stack->chipset && hci_stack->chipset->next_command){
1306ae334e9eSMatthias Ringwald                 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer);
13071979f09cSMatthias Ringwald                 bool send_cmd = false;
1308ae334e9eSMatthias Ringwald                 switch (hci_stack->chipset_result){
1309f41911edSMatthias Ringwald                     case BTSTACK_CHIPSET_VALID_COMMAND:
13101979f09cSMatthias Ringwald                         send_cmd = true;
1311e47e68c7SMatthias Ringwald                         hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT;
1312e47e68c7SMatthias Ringwald                         break;
1313f41911edSMatthias Ringwald                     case BTSTACK_CHIPSET_WARMSTART_REQUIRED:
13141979f09cSMatthias Ringwald                         send_cmd = true;
1315f41911edSMatthias Ringwald                         // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete
1316e47e68c7SMatthias Ringwald                         log_info("CSR Warm Boot");
1317659d758cSMatthias Ringwald                         btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS);
1318528a4a3bSMatthias Ringwald                         btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler);
1319528a4a3bSMatthias Ringwald                         btstack_run_loop_add_timer(&hci_stack->timeout);
1320a1df452eSMatthias Ringwald                         if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO)
1321772a36d3SMatthias Ringwald                             && hci_stack->config
13223fb36a29SMatthias Ringwald                             && hci_stack->chipset
13233fb36a29SMatthias Ringwald                             // && hci_stack->chipset->set_baudrate_command -- there's no such command
1324772a36d3SMatthias Ringwald                             && hci_stack->hci_transport->set_baudrate
13252caefae9SMatthias Ringwald                             && hci_transport_uart_get_main_baud_rate()){
1326772a36d3SMatthias Ringwald                             hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE;
1327772a36d3SMatthias Ringwald                         } else {
13289f007422SMatthias Ringwald                            hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET;
1329772a36d3SMatthias Ringwald                         }
1330e47e68c7SMatthias Ringwald                         break;
1331f41911edSMatthias Ringwald                     default:
1332f41911edSMatthias Ringwald                         break;
1333e47e68c7SMatthias Ringwald                 }
1334ee720f3aSMatthias Ringwald 
1335ee720f3aSMatthias Ringwald                 if (send_cmd){
13364ea43905SMatthias Ringwald                     int size = 3u + hci_stack->hci_packet_buffer[2u];
1337ee720f3aSMatthias Ringwald                     hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0);
1338ee720f3aSMatthias Ringwald                     hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size);
13390305bdeaSMatthias Ringwald                     hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size);
134074b323a9SMatthias Ringwald                     break;
134174b323a9SMatthias Ringwald                 }
1342148ca237SMatthias Ringwald                 log_info("Init script done");
134392a0d36dSMatthias Ringwald 
1344559961d0SMatthias Ringwald                 // Init script download on Broadcom chipsets causes:
1345ae334e9eSMatthias Ringwald                 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) &&
1346a1df452eSMatthias Ringwald                    (  (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)
1347a1df452eSMatthias Ringwald                 ||    (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){
1348e021ff1eSMatthias Ringwald 
1349559961d0SMatthias Ringwald                     // - baud rate to reset, restore UART baud rate if needed
135092a0d36dSMatthias Ringwald                     int need_baud_change = hci_stack->config
13513fb36a29SMatthias Ringwald                         && hci_stack->chipset
13523fb36a29SMatthias Ringwald                         && hci_stack->chipset->set_baudrate_command
135392a0d36dSMatthias Ringwald                         && hci_stack->hci_transport->set_baudrate
13549796ebeaSMatthias Ringwald                         && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main;
135592a0d36dSMatthias Ringwald                     if (need_baud_change) {
13569796ebeaSMatthias Ringwald                         uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init;
1357cd724cb7SMatthias Ringwald                         log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate);
135892a0d36dSMatthias Ringwald                         hci_stack->hci_transport->set_baudrate(baud_rate);
135992a0d36dSMatthias Ringwald                     }
1360559961d0SMatthias Ringwald 
1361f19b3c9eSMatthias Ringwald                     uint16_t bcm_delay_ms = 300;
1362f19b3c9eSMatthias Ringwald                     // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time
1363f19b3c9eSMatthias Ringwald                     //   -> Work around: wait here.
1364f19b3c9eSMatthias Ringwald                     log_info("BCM delay (%u ms) after init script", bcm_delay_ms);
1365559961d0SMatthias Ringwald                     hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY;
1366f19b3c9eSMatthias Ringwald                     btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms);
1367559961d0SMatthias Ringwald                     btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler);
1368559961d0SMatthias Ringwald                     btstack_run_loop_add_timer(&hci_stack->timeout);
1369559961d0SMatthias Ringwald                     break;
137092a0d36dSMatthias Ringwald                 }
137174b323a9SMatthias Ringwald             }
137274b323a9SMatthias Ringwald             // otherwise continue
1373a828a756SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS;
1374a828a756SMatthias Ringwald             hci_send_cmd(&hci_read_local_supported_commands);
1375a828a756SMatthias Ringwald             break;
137653860077SMatthias Ringwald         case HCI_INIT_SET_BD_ADDR:
137753860077SMatthias Ringwald             log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr));
13783fb36a29SMatthias Ringwald             hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer);
1379f8fbdce0SMatthias Ringwald             hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0);
138053860077SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR;
13814ea43905SMatthias Ringwald             hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]);
138253860077SMatthias Ringwald             break;
138306b9e820SMatthias Ringwald #endif
138406b9e820SMatthias Ringwald 
138506b9e820SMatthias Ringwald         case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS:
138606b9e820SMatthias Ringwald             log_info("Resend hci_read_local_supported_commands after CSR Warm Boot double reset");
138706b9e820SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS;
138806b9e820SMatthias Ringwald             hci_send_cmd(&hci_read_local_supported_commands);
138906b9e820SMatthias Ringwald             break;
139053860077SMatthias Ringwald         case HCI_INIT_READ_BD_ADDR:
139153860077SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR;
139253860077SMatthias Ringwald             hci_send_cmd(&hci_read_bd_addr);
139353860077SMatthias Ringwald             break;
139474b323a9SMatthias Ringwald         case HCI_INIT_READ_BUFFER_SIZE:
139574b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE;
13960305bdeaSMatthias Ringwald             hci_send_cmd(&hci_read_buffer_size);
139774b323a9SMatthias Ringwald             break;
139853860077SMatthias Ringwald         case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES:
139953860077SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES;
14000305bdeaSMatthias Ringwald             hci_send_cmd(&hci_read_local_supported_features);
140174b323a9SMatthias Ringwald             break;
14022b838201SMatthias Ringwald 
14032b838201SMatthias Ringwald #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL
14042b838201SMatthias Ringwald         case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL:
14052b838201SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL;
14062b838201SMatthias Ringwald             hci_send_cmd(&hci_set_controller_to_host_flow_control, 3);  // ACL + SCO Flow Control
14072b838201SMatthias Ringwald             break;
14082b838201SMatthias Ringwald         case HCI_INIT_HOST_BUFFER_SIZE:
14092b838201SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE;
14102b838201SMatthias Ringwald             hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN,
14112b838201SMatthias Ringwald                                                 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM);
14122b838201SMatthias Ringwald             break;
14132b838201SMatthias Ringwald #endif
14142b838201SMatthias Ringwald 
141574b323a9SMatthias Ringwald         case HCI_INIT_SET_EVENT_MASK:
14160305bdeaSMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK;
141774b323a9SMatthias Ringwald             if (hci_le_supported()){
141874b323a9SMatthias Ringwald                 hci_send_cmd(&hci_set_event_mask,0xffffffff, 0x3FFFFFFF);
141974b323a9SMatthias Ringwald             } else {
142074b323a9SMatthias Ringwald                 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff...
142174b323a9SMatthias Ringwald                 hci_send_cmd(&hci_set_event_mask,0xffffffff, 0x1FFFFFFF);
142274b323a9SMatthias Ringwald             }
142374b323a9SMatthias Ringwald             break;
14242b838201SMatthias Ringwald 
142535454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
142674b323a9SMatthias Ringwald         case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE:
142774b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE;
14280305bdeaSMatthias Ringwald             hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable);
142974b323a9SMatthias Ringwald             break;
143074b323a9SMatthias Ringwald         case HCI_INIT_WRITE_PAGE_TIMEOUT:
143174b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_PAGE_TIMEOUT;
14320305bdeaSMatthias Ringwald             hci_send_cmd(&hci_write_page_timeout, 0x6000);  // ca. 15 sec
143374b323a9SMatthias Ringwald             break;
1434c33e56d3SMatthias Ringwald         case HCI_INIT_WRITE_DEFAULT_LINK_POLICY_SETTING:
1435c33e56d3SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_LINK_POLICY_SETTING;
1436c33e56d3SMatthias Ringwald             hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings);
1437c33e56d3SMatthias Ringwald             break;
143874b323a9SMatthias Ringwald         case HCI_INIT_WRITE_CLASS_OF_DEVICE:
143974b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_CLASS_OF_DEVICE;
14400305bdeaSMatthias Ringwald             hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device);
144174b323a9SMatthias Ringwald             break;
14421c2a62f5SMatthias Ringwald         case HCI_INIT_WRITE_LOCAL_NAME: {
14430305bdeaSMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_LOCAL_NAME;
14441c2a62f5SMatthias Ringwald             hci_reserve_packet_buffer();
14451c2a62f5SMatthias Ringwald             uint8_t * packet = hci_stack->hci_packet_buffer;
14461c2a62f5SMatthias Ringwald             // construct HCI Command and send
14471c2a62f5SMatthias Ringwald             uint16_t opcode = hci_write_local_name.opcode;
14481c2a62f5SMatthias Ringwald             hci_stack->last_cmd_opcode = opcode;
14491c2a62f5SMatthias Ringwald             packet[0] = opcode & 0xff;
14501c2a62f5SMatthias Ringwald             packet[1] = opcode >> 8;
14511c2a62f5SMatthias Ringwald             packet[2] = DEVICE_NAME_LEN;
14521c2a62f5SMatthias Ringwald             memset(&packet[3], 0, DEVICE_NAME_LEN);
145379186815SMatthias Ringwald             uint16_t name_len = (uint16_t) strlen(hci_stack->local_name);
145479186815SMatthias Ringwald             uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN);
145579186815SMatthias Ringwald             // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call
145679186815SMatthias Ringwald             (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy);
14571c2a62f5SMatthias Ringwald             // expand '00:00:00:00:00:00' in name with bd_addr
14583c9da642SMatthias Ringwald             btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr);
14591c2a62f5SMatthias Ringwald             hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN);
146074b323a9SMatthias Ringwald             break;
14611c2a62f5SMatthias Ringwald         }
146229af07f3SMatthias Ringwald         case HCI_INIT_WRITE_EIR_DATA: {
14638a114470SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_EIR_DATA;
146429af07f3SMatthias Ringwald             hci_reserve_packet_buffer();
146529af07f3SMatthias Ringwald             uint8_t * packet = hci_stack->hci_packet_buffer;
146663873210SMatthias Ringwald             // construct HCI Command in-place and send
146729af07f3SMatthias Ringwald             uint16_t opcode = hci_write_extended_inquiry_response.opcode;
146829af07f3SMatthias Ringwald             hci_stack->last_cmd_opcode = opcode;
146963873210SMatthias Ringwald             uint16_t offset = 0;
147063873210SMatthias Ringwald             packet[offset++] = opcode & 0xff;
147163873210SMatthias Ringwald             packet[offset++] = opcode >> 8;
147263873210SMatthias Ringwald             packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN;
147363873210SMatthias Ringwald             packet[offset++] = 0;  // FEC not required
147463873210SMatthias Ringwald             memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN);
1475ad0d1108SMatthias Ringwald             if (hci_stack->eir_data){
147663873210SMatthias Ringwald                 // copy items and expand '00:00:00:00:00:00' in name with bd_addr
147763873210SMatthias Ringwald                 ad_context_t context;
147863873210SMatthias Ringwald                 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) {
147963873210SMatthias Ringwald                     uint8_t data_type   = ad_iterator_get_data_type(&context);
148063873210SMatthias Ringwald                     uint8_t size        = ad_iterator_get_data_len(&context);
148163873210SMatthias Ringwald                     const uint8_t *data = ad_iterator_get_data(&context);
148263873210SMatthias Ringwald                     // copy item
148363873210SMatthias Ringwald                     packet[offset++] = size + 1;
148463873210SMatthias Ringwald                     packet[offset++] = data_type;
148563873210SMatthias Ringwald                     memcpy(&packet[offset], data, size);
148663873210SMatthias Ringwald                     // update name item
148763873210SMatthias Ringwald                     if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){
14883c9da642SMatthias Ringwald                         btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr);
148963873210SMatthias Ringwald                     }
149063873210SMatthias Ringwald                     offset += size;
149163873210SMatthias Ringwald                 }
1492ad0d1108SMatthias Ringwald             } else {
149379186815SMatthias Ringwald                 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name);
149479186815SMatthias Ringwald                 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2);
149563873210SMatthias Ringwald                 packet[offset++] = bytes_to_copy + 1;
149663873210SMatthias Ringwald                 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME;
149779186815SMatthias Ringwald                 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy);
149829af07f3SMatthias Ringwald                 // expand '00:00:00:00:00:00' in name with bd_addr
14993c9da642SMatthias Ringwald                 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr);
150063873210SMatthias Ringwald             }
1501a8c4e5adSMatthias Ringwald             hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN);
1502ff00ed1cSMatthias Ringwald             break;
150329af07f3SMatthias Ringwald         }
1504f6858d14SMatthias Ringwald         case HCI_INIT_WRITE_INQUIRY_MODE:
1505f6858d14SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE;
15068a114470SMatthias Ringwald             hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode);
1507f6858d14SMatthias Ringwald             break;
15085d23aae8SMatthias Ringwald         case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE:
15095d23aae8SMatthias Ringwald             hci_send_cmd(&hci_write_secure_connections_host_support, 1);
1510c214d65bSMatthias Ringwald 			hci_stack->secure_connections_active = true;
15115d23aae8SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE;
15125d23aae8SMatthias Ringwald             break;
151374b323a9SMatthias Ringwald         case HCI_INIT_WRITE_SCAN_ENABLE:
151474b323a9SMatthias Ringwald             hci_send_cmd(&hci_write_scan_enable, (hci_stack->connectable << 1) | hci_stack->discoverable); // page scan
151574b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_SCAN_ENABLE;
151674b323a9SMatthias Ringwald             break;
1517483c5078SMatthias Ringwald         // only sent if ENABLE_SCO_OVER_HCI is defined
1518729ed62eSMatthias Ringwald         case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE:
1519729ed62eSMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE;
1520729ed62eSMatthias Ringwald             hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled
1521729ed62eSMatthias Ringwald             break;
1522483c5078SMatthias Ringwald         case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING:
1523483c5078SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING;
1524483c5078SMatthias Ringwald             hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1);
1525483c5078SMatthias Ringwald             break;
15268051253fSMatthias Ringwald         // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined
1527a42798c3SMatthias Ringwald         case HCI_INIT_BCM_WRITE_SCO_PCM_INT:
1528a42798c3SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT;
15298051253fSMatthias Ringwald #ifdef ENABLE_SCO_OVER_HCI
1530a42798c3SMatthias Ringwald             log_info("BCM: Route SCO data via HCI transport");
1531a42798c3SMatthias Ringwald             hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0);
15328051253fSMatthias Ringwald #endif
15338051253fSMatthias Ringwald #ifdef ENABLE_SCO_OVER_PCM
15348051253fSMatthias Ringwald             log_info("BCM: Route SCO data via PCM interface");
15351d2bbd54SMatthias Ringwald #ifdef ENABLE_BCM_PCM_WBS
15361d2bbd54SMatthias Ringwald             // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz
15371d2bbd54SMatthias Ringwald             hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1);
15381d2bbd54SMatthias Ringwald #else
15391d2bbd54SMatthias Ringwald             // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz
15401d2bbd54SMatthias Ringwald             hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1);
15411d2bbd54SMatthias Ringwald #endif
15428051253fSMatthias Ringwald #endif
1543a42798c3SMatthias Ringwald             break;
15444e821764SMatthias Ringwald #ifdef ENABLE_SCO_OVER_PCM
15454e821764SMatthias Ringwald         case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM:
15464e821764SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM;
15474e821764SMatthias Ringwald             log_info("BCM: Config PCM interface for I2S");
15481d2bbd54SMatthias Ringwald #ifdef ENABLE_BCM_PCM_WBS
15491d2bbd54SMatthias Ringwald             // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz
15501d2bbd54SMatthias Ringwald             hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2);
15511d2bbd54SMatthias Ringwald #else
15521d2bbd54SMatthias Ringwald             // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz
15531d2bbd54SMatthias Ringwald             hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1);
15541d2bbd54SMatthias Ringwald #endif
15554e821764SMatthias Ringwald             break;
155635454696SMatthias Ringwald #endif
15574e821764SMatthias Ringwald #endif
15584e821764SMatthias Ringwald 
1559a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
156074b323a9SMatthias Ringwald         // LE INIT
156174b323a9SMatthias Ringwald         case HCI_INIT_LE_READ_BUFFER_SIZE:
156274b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE;
15630305bdeaSMatthias Ringwald             hci_send_cmd(&hci_le_read_buffer_size);
156474b323a9SMatthias Ringwald             break;
1565daabb8b8SMatthias Ringwald         case HCI_INIT_LE_SET_EVENT_MASK:
1566daabb8b8SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK;
1567729710c0SMatthias Ringwald             hci_send_cmd(&hci_le_set_event_mask, 0x809FF, 0x0); // bits 0-8, 11, 19
1568daabb8b8SMatthias Ringwald             break;
156974b323a9SMatthias Ringwald         case HCI_INIT_WRITE_LE_HOST_SUPPORTED:
157074b323a9SMatthias Ringwald             // LE Supported Host = 1, Simultaneous Host = 0
157174b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED;
15720305bdeaSMatthias Ringwald             hci_send_cmd(&hci_write_le_host_supported, 1, 0);
157374b323a9SMatthias Ringwald             break;
1574b435e062SMatthias Ringwald #endif
1575b435e062SMatthias Ringwald 
1576b435e062SMatthias Ringwald #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION
1577dcd678baSMatthias Ringwald         case HCI_INIT_LE_READ_MAX_DATA_LENGTH:
1578dcd678baSMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH;
1579dcd678baSMatthias Ringwald             hci_send_cmd(&hci_le_read_maximum_data_length);
1580dcd678baSMatthias Ringwald             break;
1581dcd678baSMatthias Ringwald         case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH:
1582dcd678baSMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH;
1583b435e062SMatthias Ringwald             hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time);
1584dcd678baSMatthias Ringwald             break;
1585b435e062SMatthias Ringwald #endif
1586b435e062SMatthias Ringwald 
1587b95a5a35SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
15883b6d4121SMatthias Ringwald         case HCI_INIT_READ_WHITE_LIST_SIZE:
15893b6d4121SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE;
15903b6d4121SMatthias Ringwald             hci_send_cmd(&hci_le_read_white_list_size);
15913b6d4121SMatthias Ringwald             break;
159274b323a9SMatthias Ringwald         case HCI_INIT_LE_SET_SCAN_PARAMETERS:
159374b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_LE_SET_SCAN_PARAMETERS;
15948b69e4c7SMatthias Ringwald             hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy);
159574b323a9SMatthias Ringwald             break;
159674b323a9SMatthias Ringwald #endif
159774b323a9SMatthias Ringwald         default:
159874b323a9SMatthias Ringwald             return;
159974b323a9SMatthias Ringwald     }
160055975f88SMatthias Ringwald }
160155975f88SMatthias Ringwald 
1602a650ba4dSMatthias Ringwald static void hci_init_done(void){
1603a650ba4dSMatthias Ringwald     // done. tell the app
1604a650ba4dSMatthias Ringwald     log_info("hci_init_done -> HCI_STATE_WORKING");
1605a650ba4dSMatthias Ringwald     hci_stack->state = HCI_STATE_WORKING;
1606a650ba4dSMatthias Ringwald     hci_emit_state();
1607a650ba4dSMatthias Ringwald     hci_run();
1608a650ba4dSMatthias Ringwald }
1609a650ba4dSMatthias Ringwald 
161007fd2f31SMatthias Ringwald static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){
161107fd2f31SMatthias Ringwald     bool command_completed = false;
16120e2df43fSMatthias Ringwald     if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){
1613f8fbdce0SMatthias Ringwald         uint16_t opcode = little_endian_read_16(packet,3);
16146155b3d3S[email protected]         if (opcode == hci_stack->last_cmd_opcode){
161507fd2f31SMatthias Ringwald             command_completed = true;
1616148ca237SMatthias Ringwald             log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate);
16176155b3d3S[email protected]         } else {
1618d58dd308SMatthias Ringwald             log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate);
16196155b3d3S[email protected]         }
16206155b3d3S[email protected]     }
16210f97eae7SMatthias Ringwald 
16220e2df43fSMatthias Ringwald     if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){
16236155b3d3S[email protected]         uint8_t  status = packet[2];
1624f8fbdce0SMatthias Ringwald         uint16_t opcode = little_endian_read_16(packet,4);
16256155b3d3S[email protected]         if (opcode == hci_stack->last_cmd_opcode){
16266155b3d3S[email protected]             if (status){
162707fd2f31SMatthias Ringwald                 command_completed = true;
1628148ca237SMatthias Ringwald                 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate);
16296155b3d3S[email protected]             } else {
16306155b3d3S[email protected]                 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode);
16316155b3d3S[email protected]             }
16326155b3d3S[email protected]         } else {
1633148ca237SMatthias Ringwald             log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode);
16346155b3d3S[email protected]         }
16356155b3d3S[email protected]     }
163606b9e820SMatthias Ringwald #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API)
1637e47e68c7SMatthias Ringwald     // Vendor == CSR
16380e588213SMatthias Ringwald     if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){
1639e47e68c7SMatthias Ringwald         // TODO: track actual command
164007fd2f31SMatthias Ringwald         command_completed = true;
1641e47e68c7SMatthias Ringwald     }
1642a2481739S[email protected] 
16434e9daa6fSMatthias Ringwald     // Vendor == Toshiba
16440e588213SMatthias Ringwald     if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){
16454e9daa6fSMatthias Ringwald         // TODO: track actual command
164607fd2f31SMatthias Ringwald         command_completed = true;
1647004902f1SMatthias Ringwald         // Fix: no HCI Command Complete received, so num_cmd_packets not reset
1648004902f1SMatthias Ringwald         hci_stack->num_cmd_packets = 1;
16494e9daa6fSMatthias Ringwald     }
165007fd2f31SMatthias Ringwald #endif
165107fd2f31SMatthias Ringwald 
165207fd2f31SMatthias Ringwald     return command_completed;
165307fd2f31SMatthias Ringwald }
165407fd2f31SMatthias Ringwald 
165507fd2f31SMatthias Ringwald static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){
165607fd2f31SMatthias Ringwald 
165707fd2f31SMatthias Ringwald     UNUSED(size);   // ok: less than 6 bytes are read from our buffer
165807fd2f31SMatthias Ringwald 
165907fd2f31SMatthias Ringwald     bool command_completed =  hci_initializing_event_handler_command_completed(packet);
166007fd2f31SMatthias Ringwald 
166107fd2f31SMatthias Ringwald #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API)
16624e9daa6fSMatthias Ringwald 
16630f97eae7SMatthias Ringwald     // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661:
16640f97eae7SMatthias Ringwald     // Command complete for HCI Reset arrives after we've resent the HCI Reset command
16650f97eae7SMatthias Ringwald     //
16660f97eae7SMatthias Ringwald     // HCI Reset
16670f97eae7SMatthias Ringwald     // Timeout 100 ms
16680f97eae7SMatthias Ringwald     // HCI Reset
16690f97eae7SMatthias Ringwald     // Command Complete Reset
16700f97eae7SMatthias Ringwald     // HCI Read Local Version Information
16710f97eae7SMatthias Ringwald     // Command Complete Reset - but we expected Command Complete Read Local Version Information
16720f97eae7SMatthias Ringwald     // hang...
16730f97eae7SMatthias Ringwald     //
16740f97eae7SMatthias Ringwald     // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend
16750f97eae7SMatthias Ringwald     if (!command_completed
1676a1df452eSMatthias Ringwald             && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE)
16770e588213SMatthias Ringwald             && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){
16780f97eae7SMatthias Ringwald 
1679f8fbdce0SMatthias Ringwald         uint16_t opcode = little_endian_read_16(packet,3);
16800f97eae7SMatthias Ringwald         if (opcode == hci_reset.opcode){
16810f97eae7SMatthias Ringwald             hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION;
16820f97eae7SMatthias Ringwald             return;
16830f97eae7SMatthias Ringwald         }
16840f97eae7SMatthias Ringwald     }
16850f97eae7SMatthias Ringwald 
16869f007422SMatthias Ringwald     // CSR & H5
16879f007422SMatthias Ringwald     // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend
16889f007422SMatthias Ringwald     if (!command_completed
1689a1df452eSMatthias Ringwald             && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE)
16900e588213SMatthias Ringwald             && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){
16919f007422SMatthias Ringwald 
16929f007422SMatthias Ringwald         uint16_t opcode = little_endian_read_16(packet,3);
16939f007422SMatthias Ringwald         if (opcode == hci_reset.opcode){
16949f007422SMatthias Ringwald             hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS;
16959f007422SMatthias Ringwald             return;
16969f007422SMatthias Ringwald         }
16979f007422SMatthias Ringwald     }
16989f007422SMatthias Ringwald 
16999f007422SMatthias Ringwald     // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT
17009f007422SMatthias Ringwald     // fix: Correct substate and behave as command below
17019f007422SMatthias Ringwald     if (command_completed){
17029f007422SMatthias Ringwald         switch (hci_stack->substate){
17039f007422SMatthias Ringwald             case HCI_INIT_SEND_RESET:
17049f007422SMatthias Ringwald                 hci_stack->substate = HCI_INIT_W4_SEND_RESET;
17059f007422SMatthias Ringwald                 break;
17069f007422SMatthias Ringwald             case HCI_INIT_SEND_RESET_CSR_WARM_BOOT:
17079f007422SMatthias Ringwald                 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT;
17089f007422SMatthias Ringwald                 break;
17099f007422SMatthias Ringwald             default:
17109f007422SMatthias Ringwald                 break;
17119f007422SMatthias Ringwald         }
17129f007422SMatthias Ringwald     }
17130f97eae7SMatthias Ringwald 
171406b9e820SMatthias Ringwald #endif
17150f97eae7SMatthias Ringwald 
1716a2481739S[email protected]     if (!command_completed) return;
1717a2481739S[email protected] 
171807fd2f31SMatthias Ringwald     bool need_baud_change = false;
171907fd2f31SMatthias Ringwald     bool need_addr_change = false;
172006b9e820SMatthias Ringwald 
172106b9e820SMatthias Ringwald #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API)
172206b9e820SMatthias Ringwald     need_baud_change = hci_stack->config
17233fb36a29SMatthias Ringwald                         && hci_stack->chipset
17243fb36a29SMatthias Ringwald                         && hci_stack->chipset->set_baudrate_command
1725db8bc6ffSMatthias Ringwald                         && hci_stack->hci_transport->set_baudrate
17269796ebeaSMatthias Ringwald                         && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main;
1727db8bc6ffSMatthias Ringwald 
172806b9e820SMatthias Ringwald     need_addr_change = hci_stack->custom_bd_addr_set
17293fb36a29SMatthias Ringwald                         && hci_stack->chipset
17303fb36a29SMatthias Ringwald                         && hci_stack->chipset->set_bd_addr_command;
173106b9e820SMatthias Ringwald #endif
1732a80162e9SMatthias Ringwald 
17335c363727SMatthias Ringwald     switch(hci_stack->substate){
173406b9e820SMatthias Ringwald 
173506b9e820SMatthias Ringwald #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API)
17369f007422SMatthias Ringwald         case HCI_INIT_SEND_RESET:
1737d58dd308SMatthias Ringwald             // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET
17389f007422SMatthias Ringwald             // fix: just correct substate and behave as command below
17399f007422SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_SEND_RESET;
17409f007422SMatthias Ringwald             btstack_run_loop_remove_timer(&hci_stack->timeout);
17419f007422SMatthias Ringwald             break;
174274b323a9SMatthias Ringwald         case HCI_INIT_W4_SEND_RESET:
1743528a4a3bSMatthias Ringwald             btstack_run_loop_remove_timer(&hci_stack->timeout);
174476fcb19bSMatthias Ringwald             break;
1745e90bae01SMatthias Ringwald         case HCI_INIT_W4_SEND_READ_LOCAL_NAME:
174607fd2f31SMatthias Ringwald             log_info("Received local name, need baud change %d", (int) need_baud_change);
17472f48d920SMatthias Ringwald             if (need_baud_change){
17482f48d920SMatthias Ringwald                 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE;
17492f48d920SMatthias Ringwald                 return;
17502f48d920SMatthias Ringwald             }
175153860077SMatthias Ringwald             // skip baud change
175274b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_CUSTOM_INIT;
175374b323a9SMatthias Ringwald             return;
1754a80162e9SMatthias Ringwald         case HCI_INIT_W4_SEND_BAUD_CHANGE:
17554696bddbSMatthias Ringwald             // for STLC2500D, baud rate change already happened.
1756fab26ab3SMatthias Ringwald             // for others, baud rate gets changed now
175761f37892SMatthias Ringwald             if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){
175896b53536SMatthias Ringwald                 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate();
1759cd724cb7SMatthias Ringwald                 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate);
1760fab26ab3SMatthias Ringwald                 hci_stack->hci_transport->set_baudrate(baud_rate);
17614696bddbSMatthias Ringwald             }
176274b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_CUSTOM_INIT;
176374b323a9SMatthias Ringwald             return;
1764a80162e9SMatthias Ringwald         case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT:
1765528a4a3bSMatthias Ringwald             btstack_run_loop_remove_timer(&hci_stack->timeout);
1766a80162e9SMatthias Ringwald             hci_stack->substate = HCI_INIT_CUSTOM_INIT;
1767a80162e9SMatthias Ringwald             return;
176874b323a9SMatthias Ringwald         case HCI_INIT_W4_CUSTOM_INIT:
176974b323a9SMatthias Ringwald             // repeat custom init
177074b323a9SMatthias Ringwald             hci_stack->substate = HCI_INIT_CUSTOM_INIT;
177174b323a9SMatthias Ringwald             return;
177206b9e820SMatthias Ringwald #else
177306b9e820SMatthias Ringwald         case HCI_INIT_W4_SEND_RESET:
177406b9e820SMatthias Ringwald             hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS;
177506b9e820SMatthias Ringwald             return ;
177606b9e820SMatthias Ringwald #endif
177706b9e820SMatthias Ringwald 
1778a828a756SMatthias Ringwald         case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS:
17790e588213SMatthias Ringwald             if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) &&
1780efd3b327SMatthias Ringwald               ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) ||
1781efd3b327SMatthias Ringwald                (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) {
1782eb3a5314SMatthias Ringwald                 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM;
1783eb3a5314SMatthias Ringwald                 return;
1784eb3a5314SMatthias Ringwald             }
178553860077SMatthias Ringwald             if (need_addr_change){
178653860077SMatthias Ringwald                 hci_stack->substate = HCI_INIT_SET_BD_ADDR;
178753860077SMatthias Ringwald                 return;
178853860077SMatthias Ringwald             }
178953860077SMatthias Ringwald             hci_stack->substate = HCI_INIT_READ_BD_ADDR;
179053860077SMatthias Ringwald             return;
179106b9e820SMatthias Ringwald #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API)
17927224be7eSMatthias Ringwald         case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM:
17937224be7eSMatthias Ringwald             if (need_baud_change){
179496b53536SMatthias Ringwald                 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate();
1795cd724cb7SMatthias Ringwald                 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate);
1796fab26ab3SMatthias Ringwald                 hci_stack->hci_transport->set_baudrate(baud_rate);
17977224be7eSMatthias Ringwald             }
1798eb3a5314SMatthias Ringwald             if (need_addr_change){
1799eb3a5314SMatthias Ringwald                 hci_stack->substate = HCI_INIT_SET_BD_ADDR;
1800eb3a5314SMatthias Ringwald                 return;
1801eb3a5314SMatthias Ringwald             }
1802eb3a5314SMatthias Ringwald             hci_stack->substate = HCI_INIT_READ_BD_ADDR;
1803eb3a5314SMatthias Ringwald             return;
180453860077SMatthias Ringwald         case HCI_INIT_W4_SET_BD_ADDR:
18056ca9a99aSMatthias Ringwald             // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command
18066ca9a99aSMatthias Ringwald             if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS)
18076ca9a99aSMatthias Ringwald             ||  (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){
180853860077SMatthias Ringwald                 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT;
180953860077SMatthias Ringwald                 return;
181053860077SMatthias Ringwald             }
181153860077SMatthias Ringwald             // skipping st warm boot
181253860077SMatthias Ringwald             hci_stack->substate = HCI_INIT_READ_BD_ADDR;
181353860077SMatthias Ringwald             return;
181453860077SMatthias Ringwald         case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT:
181553860077SMatthias Ringwald             hci_stack->substate = HCI_INIT_READ_BD_ADDR;
181653860077SMatthias Ringwald             return;
181706b9e820SMatthias Ringwald #endif
181853860077SMatthias Ringwald         case HCI_INIT_W4_READ_BD_ADDR:
181953860077SMatthias Ringwald             // only read buffer size if supported
18204ea43905SMatthias Ringwald             if (hci_stack->local_supported_commands[0u] & 0x01u) {
182153860077SMatthias Ringwald                 hci_stack->substate = HCI_INIT_READ_BUFFER_SIZE;
182253860077SMatthias Ringwald                 return;
182353860077SMatthias Ringwald             }
182453860077SMatthias Ringwald             // skipping read buffer size
182553860077SMatthias Ringwald             hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES;
1826a828a756SMatthias Ringwald             return;
182774b323a9SMatthias Ringwald         case HCI_INIT_W4_SET_EVENT_MASK:
18286155b3d3S[email protected]             // skip Classic init commands for LE only chipsets
18296155b3d3S[email protected]             if (!hci_classic_supported()){
18302c68f164SMatthias Ringwald #ifdef ENABLE_BLE
18316155b3d3S[email protected]                 if (hci_le_supported()){
183274b323a9SMatthias Ringwald                     hci_stack->substate = HCI_INIT_LE_READ_BUFFER_SIZE; // skip all classic command
183374b323a9SMatthias Ringwald                     return;
18342c68f164SMatthias Ringwald                 }
18352c68f164SMatthias Ringwald #endif
18366155b3d3S[email protected]                 log_error("Neither BR/EDR nor LE supported");
1837a650ba4dSMatthias Ringwald                 hci_init_done();
183874b323a9SMatthias Ringwald                 return;
18396155b3d3S[email protected]             }
184015a95bd5SMatthias Ringwald             if (!gap_ssp_supported()){
18415c363727SMatthias Ringwald                 hci_stack->substate = HCI_INIT_WRITE_PAGE_TIMEOUT;
184274b323a9SMatthias Ringwald                 return;
18436155b3d3S[email protected]             }
18446155b3d3S[email protected]             break;
1845903ea03aSMatthias Ringwald #ifdef ENABLE_BLE
1846a828a756SMatthias Ringwald         case HCI_INIT_W4_LE_READ_BUFFER_SIZE:
1847a828a756SMatthias Ringwald             // skip write le host if not supported (e.g. on LE only EM9301)
18484ea43905SMatthias Ringwald             if (hci_stack->local_supported_commands[0u] & 0x02u) break;
1849daabb8b8SMatthias Ringwald             hci_stack->substate = HCI_INIT_LE_SET_EVENT_MASK;
1850daabb8b8SMatthias Ringwald             return;
1851daabb8b8SMatthias Ringwald 
1852b435e062SMatthias Ringwald #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION
1853b435e062SMatthias Ringwald         case HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED:
18546fab74dbSMatthias Ringwald             log_info("Supported commands %x", hci_stack->local_supported_commands[0] & 0x30);
18554ea43905SMatthias Ringwald             if ((hci_stack->local_supported_commands[0u] & 0x30u) == 0x30u){
185680d7d618SMatthias Ringwald                 hci_stack->substate = HCI_INIT_LE_SET_EVENT_MASK;
1857b435e062SMatthias Ringwald                 return;
1858b435e062SMatthias Ringwald             }
1859b435e062SMatthias Ringwald             // explicit fall through to reduce repetitions
1860b435e062SMatthias Ringwald 
1861b435e062SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
1862b435e062SMatthias Ringwald             hci_stack->substate = HCI_INIT_READ_WHITE_LIST_SIZE;
1863903ea03aSMatthias Ringwald #else
1864903ea03aSMatthias Ringwald             hci_init_done();
1865903ea03aSMatthias Ringwald #endif
1866a828a756SMatthias Ringwald             return;
186706337f4fSMatthias Ringwald #endif  /* ENABLE_LE_DATA_LENGTH_EXTENSION */
186806337f4fSMatthias Ringwald 
186906337f4fSMatthias Ringwald #endif  /* ENABLE_BLE */
1870b435e062SMatthias Ringwald 
18715d23aae8SMatthias Ringwald         case HCI_INIT_W4_WRITE_INQUIRY_MODE:
18725d23aae8SMatthias Ringwald             // skip write secure connections host support if not supported or disabled
18734ea43905SMatthias Ringwald             if (!hci_stack->secure_connections_enable || (hci_stack->local_supported_commands[1u] & 0x02u) == 0u) {
18745d23aae8SMatthias Ringwald                 hci_stack->substate = HCI_INIT_WRITE_SCAN_ENABLE;
18755d23aae8SMatthias Ringwald                 return;
18765d23aae8SMatthias Ringwald             }
18775d23aae8SMatthias Ringwald             break;
18785d23aae8SMatthias Ringwald 
187947bc3ebbSMatthias Ringwald #ifdef ENABLE_SCO_OVER_HCI
18803b65523cSMatthias Ringwald         case HCI_INIT_W4_WRITE_SCAN_ENABLE:
18813905afbfSMatthias Ringwald             // skip write synchronous flow control if not supported
18823905afbfSMatthias Ringwald             if (hci_stack->local_supported_commands[0] & 0x04) break;
18833905afbfSMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE;
1884cf373d3aSMatthias Ringwald 
1885cf373d3aSMatthias Ringwald             /* fall through */
18863905afbfSMatthias Ringwald 
1887729ed62eSMatthias Ringwald         case HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE:
18883905afbfSMatthias Ringwald             // skip write default erroneous data reporting if not supported
18893905afbfSMatthias Ringwald             if (hci_stack->local_supported_commands[0] & 0x08) break;
18903905afbfSMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING;
1891cf373d3aSMatthias Ringwald 
1892cf373d3aSMatthias Ringwald             /* fall through */
18933905afbfSMatthias Ringwald 
1894f064e0bbSMatthias Ringwald         case HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING:
1895a42798c3SMatthias Ringwald             // skip bcm set sco pcm config on non-Broadcom chipsets
189661f37892SMatthias Ringwald             if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) break;
18970168d82eSMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM;
1898cf373d3aSMatthias Ringwald 
1899cf373d3aSMatthias Ringwald             /* fall through */
1900a42798c3SMatthias Ringwald 
1901a42798c3SMatthias Ringwald         case HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT:
1902729ed62eSMatthias Ringwald             if (!hci_le_supported()){
1903729ed62eSMatthias Ringwald                 // SKIP LE init for Classic only configuration
1904a650ba4dSMatthias Ringwald                 hci_init_done();
1905729ed62eSMatthias Ringwald                 return;
1906729ed62eSMatthias Ringwald             }
1907afe9bf34SMatthias Ringwald             hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM;
1908729ed62eSMatthias Ringwald             break;
1909f3b012f9SMatthias Ringwald 
1910f3b012f9SMatthias Ringwald #else /* !ENABLE_SCO_OVER_HCI */
1911f3b012f9SMatthias Ringwald 
191274b323a9SMatthias Ringwald         case HCI_INIT_W4_WRITE_SCAN_ENABLE:
19138051253fSMatthias Ringwald #ifdef ENABLE_SCO_OVER_PCM
19148051253fSMatthias Ringwald             if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) {
19158051253fSMatthias Ringwald                 hci_stack->substate = HCI_INIT_BCM_WRITE_SCO_PCM_INT;
19168051253fSMatthias Ringwald                 return;
19178051253fSMatthias Ringwald             }
19188051253fSMatthias Ringwald #endif
19198051253fSMatthias Ringwald             /* fall through */
19208051253fSMatthias Ringwald 
19214e821764SMatthias Ringwald         case HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM:
1922f3b012f9SMatthias Ringwald #ifdef ENABLE_BLE
1923f3b012f9SMatthias Ringwald             if (hci_le_supported()){
1924f3b012f9SMatthias Ringwald                 hci_stack->substate = HCI_INIT_LE_READ_BUFFER_SIZE;
192574b323a9SMatthias Ringwald                 return;
19266155b3d3S[email protected]             }
1927729ed62eSMatthias Ringwald #endif
1928f3b012f9SMatthias Ringwald             // SKIP LE init for Classic only configuration
1929f3b012f9SMatthias Ringwald             hci_init_done();
1930f3b012f9SMatthias Ringwald             return;
1931f3b012f9SMatthias Ringwald #endif /* ENABLE_SCO_OVER_HCI */
1932f3b012f9SMatthias Ringwald 
1933a4e96e78SMatthias Ringwald // avoid compile error due to duplicate cases: HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT == HCI_INIT_DONE-1
1934a4e96e78SMatthias Ringwald #if defined(ENABLE_BLE) || defined(ENABLE_LE_DATA_LENGTH_EXTENSION) || defined(ENABLE_LE_CENTRAL)
1935a650ba4dSMatthias Ringwald         // Response to command before init done state -> init done
1936a650ba4dSMatthias Ringwald         case (HCI_INIT_DONE-1):
1937a650ba4dSMatthias Ringwald             hci_init_done();
1938a650ba4dSMatthias Ringwald             return;
1939a4e96e78SMatthias Ringwald #endif
1940a650ba4dSMatthias Ringwald 
19416155b3d3S[email protected]         default:
194274b323a9SMatthias Ringwald             break;
19436155b3d3S[email protected]     }
194455975f88SMatthias Ringwald     hci_initializing_next_state();
19456155b3d3S[email protected] }
19466155b3d3S[email protected] 
19470bbba85bSMatthias Ringwald static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){
1948229331c6SMatthias Ringwald     log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address));
19490bbba85bSMatthias Ringwald     bd_addr_t bd_address;
19506535961aSMatthias Ringwald     (void)memcpy(&bd_address, conn->address, 6);
19510bbba85bSMatthias Ringwald 
19526bc9fa5eSMatthias Ringwald #ifdef ENABLE_CLASSIC
19536bc9fa5eSMatthias Ringwald     // cache needed data
19546bc9fa5eSMatthias Ringwald     int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED;
19556bc9fa5eSMatthias Ringwald #endif
19566bc9fa5eSMatthias Ringwald 
19570bbba85bSMatthias Ringwald     // connection failed, remove entry
19580bbba85bSMatthias Ringwald     btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn);
19590bbba85bSMatthias Ringwald     btstack_memory_hci_connection_free( conn );
19600bbba85bSMatthias Ringwald 
19616bc9fa5eSMatthias Ringwald #ifdef ENABLE_CLASSIC
19620bbba85bSMatthias Ringwald     // notify client if dedicated bonding
19630bbba85bSMatthias Ringwald     if (notify_dedicated_bonding_failed){
19640bbba85bSMatthias Ringwald         log_info("hci notify_dedicated_bonding_failed");
19650bbba85bSMatthias Ringwald         hci_emit_dedicated_bonding_result(bd_address, status);
19660bbba85bSMatthias Ringwald     }
19670bbba85bSMatthias Ringwald 
19680bbba85bSMatthias Ringwald     // if authentication error, also delete link key
19690bbba85bSMatthias Ringwald     if (status == ERROR_CODE_AUTHENTICATION_FAILURE) {
19700bbba85bSMatthias Ringwald         gap_drop_link_key_for_bd_addr(bd_address);
19710bbba85bSMatthias Ringwald     }
19721c79b5e3SMatthias Ringwald #else
19731c79b5e3SMatthias Ringwald     UNUSED(status);
19746bc9fa5eSMatthias Ringwald #endif
19750bbba85bSMatthias Ringwald }
19760bbba85bSMatthias Ringwald 
1977be500194SMatthias Ringwald #ifdef ENABLE_CLASSIC
19782f5c44baSMatthias Ringwald static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){
19792f5c44baSMatthias Ringwald     // SSP Controller
19802f5c44baSMatthias Ringwald     if (features[6] & (1 << 3)){
19812f5c44baSMatthias Ringwald         conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER;
19822f5c44baSMatthias Ringwald     }
19832f5c44baSMatthias Ringwald     // eSCO
19842f5c44baSMatthias Ringwald     if (features[3] & (1<<7)){
19852f5c44baSMatthias Ringwald         conn->remote_supported_features[0] |= 1;
19862f5c44baSMatthias Ringwald     }
19872f5c44baSMatthias Ringwald     // Extended features
19882f5c44baSMatthias Ringwald     if (features[7] & (1<<7)){
19892f5c44baSMatthias Ringwald         conn->remote_supported_features[0] |= 2;
19902f5c44baSMatthias Ringwald     }
19912f5c44baSMatthias Ringwald }
19922f5c44baSMatthias Ringwald 
19932f5c44baSMatthias Ringwald static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){
19942f5c44baSMatthias Ringwald     // SSP Host
19952f5c44baSMatthias Ringwald     if (features[0] & (1 << 0)){
19962f5c44baSMatthias Ringwald         conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST;
19972f5c44baSMatthias Ringwald     }
199850c51a77SMatthias Ringwald     // SC Host
199950c51a77SMatthias Ringwald     if (features[0] & (1 << 3)){
200050c51a77SMatthias Ringwald         conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST;
200150c51a77SMatthias Ringwald     }
200250c51a77SMatthias Ringwald }
200350c51a77SMatthias Ringwald 
200450c51a77SMatthias Ringwald static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){
200550c51a77SMatthias Ringwald     // SC Controller
200650c51a77SMatthias Ringwald     if (features[1] & (1 << 0)){
200750c51a77SMatthias Ringwald         conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER;
200850c51a77SMatthias Ringwald     }
20092f5c44baSMatthias Ringwald }
20102f5c44baSMatthias Ringwald 
2011de0df013SMatthias Ringwald static void hci_handle_remote_features_received(hci_connection_t * conn){
2012de0df013SMatthias Ringwald     conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES;
201349bafb5eSMatthias Ringwald     log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags);
2014de0df013SMatthias Ringwald     if (conn->bonding_flags & BONDING_DEDICATED){
2015de0df013SMatthias Ringwald         conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST;
2016de0df013SMatthias Ringwald     }
2017de0df013SMatthias Ringwald }
2018be500194SMatthias Ringwald #endif
2019de0df013SMatthias Ringwald 
202067c6c9dcSMatthias Ringwald static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) {
202167c6c9dcSMatthias Ringwald     // handle BT initialization
202267c6c9dcSMatthias Ringwald     if (hci_stack->state == HCI_STATE_INITIALIZING) {
202367c6c9dcSMatthias Ringwald         hci_initializing_event_handler(packet, size);
202467c6c9dcSMatthias Ringwald     }
202567c6c9dcSMatthias Ringwald 
202667c6c9dcSMatthias Ringwald     // help with BT sleep
202767c6c9dcSMatthias Ringwald     if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP)
202867c6c9dcSMatthias Ringwald         && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE)
202967c6c9dcSMatthias Ringwald         && HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_write_scan_enable)) {
203067c6c9dcSMatthias Ringwald         hci_initializing_next_state();
203167c6c9dcSMatthias Ringwald     }
203267c6c9dcSMatthias Ringwald }
203367c6c9dcSMatthias Ringwald 
20349866fdc7SMatthias Ringwald #ifdef ENABLE_CLASSIC
20359866fdc7SMatthias Ringwald static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) {
20369866fdc7SMatthias Ringwald     conn->authentication_flags |= CONNECTION_ENCRYPTED;
20379866fdc7SMatthias Ringwald     conn->encryption_key_size = encryption_key_size;
2038abdad579SMatthias Ringwald 
2039abdad579SMatthias Ringwald     if ((conn->authentication_flags & CONNECTION_AUTHENTICATED) != 0) {
20409866fdc7SMatthias Ringwald         hci_emit_security_level(conn->con_handle, gap_security_level_for_connection(conn));
2041abdad579SMatthias Ringwald         return;
2042abdad579SMatthias Ringwald     }
2043abdad579SMatthias Ringwald 
2044abdad579SMatthias Ringwald     // Request Authentication if not already done
2045abdad579SMatthias Ringwald     if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return;
2046abdad579SMatthias Ringwald     conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST;
20479866fdc7SMatthias Ringwald }
20489866fdc7SMatthias Ringwald #endif
20499866fdc7SMatthias Ringwald 
20504f781026SMatthias Ringwald static void handle_command_complete_event(uint8_t * packet, uint16_t size){
2051b08371a9SMilanka Ringwald     UNUSED(size);
2052e76a89eeS[email protected] 
20539cbd2215SMatthias Ringwald     uint16_t manufacturer;
20549cbd2215SMatthias Ringwald #ifdef ENABLE_CLASSIC
2055fe1ed1b8Smatthias.ringwald     hci_con_handle_t handle;
20561f7b95a1Smatthias.ringwald     hci_connection_t * conn;
2057645b7c25SMatthias Ringwald     uint8_t status;
20589cbd2215SMatthias Ringwald #endif
20596bef4003SMatthias Ringwald     // get num cmd packets - limit to 1 to reduce complexity
20606bef4003SMatthias Ringwald     hci_stack->num_cmd_packets = packet[2] ? 1 : 0;
20617ec5eeaaSmatthias.ringwald 
2062645b7c25SMatthias Ringwald     uint16_t opcode = hci_event_command_complete_get_command_opcode(packet);
2063645b7c25SMatthias Ringwald     switch (opcode){
2064645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_READ_LOCAL_NAME:
2065645b7c25SMatthias Ringwald             if (packet[5]) break;
20669e263bd7SMatthias Ringwald             // terminate, name 248 chars
20679e263bd7SMatthias Ringwald             packet[6+248] = 0;
20689e263bd7SMatthias Ringwald             log_info("local name: %s", &packet[6]);
2069645b7c25SMatthias Ringwald             break;
2070645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_READ_BUFFER_SIZE:
20711d279b20Smatthias.ringwald             // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets"
2072c3b46f5aSMatthias Ringwald             if (hci_stack->state == HCI_STATE_INITIALIZING) {
2073429122ccSMatthias Ringwald                 uint16_t acl_len = little_endian_read_16(packet, 6);
2074429122ccSMatthias Ringwald                 uint16_t sco_len = packet[8];
2075429122ccSMatthias Ringwald 
2076429122ccSMatthias Ringwald                 // determine usable ACL/SCO payload size
2077429122ccSMatthias Ringwald                 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE);
2078429122ccSMatthias Ringwald                 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE);
2079429122ccSMatthias Ringwald 
2080f8fbdce0SMatthias Ringwald                 hci_stack->acl_packets_total_num = little_endian_read_16(packet, 9);
2081f8fbdce0SMatthias Ringwald                 hci_stack->sco_packets_total_num = little_endian_read_16(packet, 11);
2082a8b12447S[email protected] 
2083429122ccSMatthias Ringwald                 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u",
2084429122ccSMatthias Ringwald                          acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num,
20851a06f663S[email protected]                          hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num);
2086c3b46f5aSMatthias Ringwald             }
2087645b7c25SMatthias Ringwald             break;
2088645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_READ_RSSI:
2089645b7c25SMatthias Ringwald             if (packet[5] == ERROR_CODE_SUCCESS){
2090891b9fc2SMatthias Ringwald                 uint8_t event[5];
2091891b9fc2SMatthias Ringwald                 event[0] = GAP_EVENT_RSSI_MEASUREMENT;
2092891b9fc2SMatthias Ringwald                 event[1] = 3;
20936535961aSMatthias Ringwald                 (void)memcpy(&event[2], &packet[6], 3);
2094891b9fc2SMatthias Ringwald                 hci_emit_event(event, sizeof(event), 1);
2095891b9fc2SMatthias Ringwald             }
2096645b7c25SMatthias Ringwald             break;
2097a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
2098645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE:
2099f8fbdce0SMatthias Ringwald             hci_stack->le_data_packets_length = little_endian_read_16(packet, 6);
2100ee303eddS[email protected]             hci_stack->le_acl_packets_total_num = packet[8];
21016c26b087S[email protected]             // determine usable ACL payload size
21026c26b087S[email protected]             if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){
21036c26b087S[email protected]                 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE;
21046c26b087S[email protected]             }
21059da54300S[email protected]             log_info("hci_le_read_buffer_size: size %u, count %u", hci_stack->le_data_packets_length, hci_stack->le_acl_packets_total_num);
2106645b7c25SMatthias Ringwald             break;
2107b435e062SMatthias Ringwald #endif
2108b435e062SMatthias Ringwald #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION
2109645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH:
2110dcd678baSMatthias Ringwald             hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6);
2111dcd678baSMatthias Ringwald             hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8);
2112dcd678baSMatthias Ringwald             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);
2113645b7c25SMatthias Ringwald             break;
2114b435e062SMatthias Ringwald #endif
2115d70217a2SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
2116645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE:
2117e691bb38SMatthias Ringwald             hci_stack->le_whitelist_capacity = packet[6];
211815d0a15bSMatthias Ringwald             log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity);
2119645b7c25SMatthias Ringwald             break;
212065a46ef3S[email protected] #endif
2121645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_READ_BD_ADDR:
2122645b7c25SMatthias Ringwald             reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr);
2123645b7c25SMatthias Ringwald             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));
212433373e40SMatthias Ringwald #ifdef ENABLE_CLASSIC
21251624665aSMatthias Ringwald             if (hci_stack->link_key_db){
21261624665aSMatthias Ringwald                 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr);
21271624665aSMatthias Ringwald             }
212833373e40SMatthias Ringwald #endif
2129645b7c25SMatthias Ringwald             break;
213035454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
2131645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE:
21323a9fb326S[email protected]             hci_emit_discoverable_enabled(hci_stack->discoverable);
2133645b7c25SMatthias Ringwald             break;
2134645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_INQUIRY_CANCEL:
2135f5875de5SMatthias Ringwald             if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){
2136f5875de5SMatthias Ringwald                 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE;
2137f5875de5SMatthias Ringwald                 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0};
2138f5875de5SMatthias Ringwald                 hci_emit_event(event, sizeof(event), 1);
2139f5875de5SMatthias Ringwald             }
2140645b7c25SMatthias Ringwald             break;
214135454696SMatthias Ringwald #endif
2142645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES:
21434f781026SMatthias Ringwald             (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8);
214465389bfcS[email protected] 
214535454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
2146a5a23fc2S[email protected]             // determine usable ACL packet types based on host buffer size and supported features
2147a5a23fc2S[email protected]             hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]);
21488b96126aSMatthias Ringwald             log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported());
214935454696SMatthias Ringwald #endif
2150f5d8d141S[email protected]             // Classic/LE
2151f5d8d141S[email protected]             log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported());
2152645b7c25SMatthias Ringwald             break;
2153645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION:
2154645b7c25SMatthias Ringwald             manufacturer = little_endian_read_16(packet, 10);
2155c21d89f3SMatthias Ringwald             // map Cypress to Broadcom
2156c21d89f3SMatthias Ringwald             if (manufacturer  == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){
2157c21d89f3SMatthias Ringwald                 log_info("Treat Cypress as Broadcom");
2158c21d89f3SMatthias Ringwald                 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION;
2159c21d89f3SMatthias Ringwald                 little_endian_store_16(packet, 10, manufacturer);
2160c21d89f3SMatthias Ringwald             }
2161c21d89f3SMatthias Ringwald             hci_stack->manufacturer = manufacturer;
21624696bddbSMatthias Ringwald             log_info("Manufacturer: 0x%04x", hci_stack->manufacturer);
2163645b7c25SMatthias Ringwald             break;
2164645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS:
2165a828a756SMatthias Ringwald             hci_stack->local_supported_commands[0] =
21664ea43905SMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+14u] & 0x80u) >> 7u) |  // bit  0 = Octet 14, bit 7 / Read Buffer Size
21674ea43905SMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+24u] & 0x40u) >> 5u) |  // bit  1 = Octet 24, bit 6 / Write Le Host Supported
21684ea43905SMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+10u] & 0x10u) >> 2u) |  // bit  2 = Octet 10, bit 4 / Write Synchronous Flow Control Enable
21694ea43905SMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+18u] & 0x08u)     )  |  // bit  3 = Octet 18, bit 3 / Write Default Erroneous Data Reporting
21704ea43905SMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+34u] & 0x01u) << 4u) |  // bit  4 = Octet 34, bit 0 / LE Write Suggested Default Data Length
21714ea43905SMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+35u] & 0x08u) << 2u) |  // bit  5 = Octet 35, bit 3 / LE Read Maximum Data Length
21724ea43905SMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+35u] & 0x20u) << 1u) |  // bit  6 = Octet 35, bit 5 / LE Set Default PHY
21734ea43905SMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+20u] & 0x10u) << 3u);   // bit  7 = Octet 20, bit 4 / Read Encryption Key Size
21748d2d8af1SMatthias Ringwald             hci_stack->local_supported_commands[1] =
21754ea43905SMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+ 2u] & 0x40u) >> 6u) |  // bit  8 = Octet  2, bit 6 / Read Remote Extended Features
217699b14827SMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+32u] & 0x08u) >> 2u) |  // bit  9 = Octet 32, bit 3 / Write Secure Connections Host
2177f21849cbSMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+35u] & 0x02u) << 1u) |  // bit 10 = Octet 35, bit 1 / LE Set Address Resolution Enable
2178f21849cbSMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+32u] & 0x02u) << 2u) |  // bit 11 = Octet 32, bit 1 / Remote OOB Extended Data Request Reply
2179f21849cbSMatthias Ringwald                 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+32u] & 0x40u) >> 2u);   // bit 12 = Octet 32, bit 6 / Read Local OOB Extended Data command
21808d2d8af1SMatthias Ringwald             log_info("Local supported commands summary %02x - %02x", hci_stack->local_supported_commands[0],  hci_stack->local_supported_commands[1]);
2181645b7c25SMatthias Ringwald             break;
2182e8c8828eSMatthias Ringwald #ifdef ENABLE_CLASSIC
2183645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE:
21844f781026SMatthias Ringwald             if (packet[5]) return;
21855b9b590fSMatthias Ringwald             hci_stack->synchronous_flow_control_enabled = 1;
2186645b7c25SMatthias Ringwald             break;
2187645b7c25SMatthias Ringwald         case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE:
2188645b7c25SMatthias Ringwald             status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE];
2189573897a0SMatthias Ringwald             handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1);
2190573897a0SMatthias Ringwald             conn   = hci_connection_for_handle(handle);
2191c3b46f5aSMatthias Ringwald             if (conn != NULL) {
21929866fdc7SMatthias Ringwald                 uint8_t key_size = 0;
2193573897a0SMatthias Ringwald                 if (status == 0){
21949866fdc7SMatthias Ringwald                     key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3];
21954a659b0eSMatthias Ringwald                     log_info("Handle %04x key Size: %u", handle, key_size);
2196170fafaeSMatthias Ringwald                 } else {
21979866fdc7SMatthias Ringwald                     log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status);
2198573897a0SMatthias Ringwald                 }
21999866fdc7SMatthias Ringwald                 hci_handle_read_encryption_key_size_complete(conn, key_size);
2200c3b46f5aSMatthias Ringwald             }
2201645b7c25SMatthias Ringwald             break;
220275a8e4faSMatthias Ringwald #ifdef ENABLE_CLASSIC_PAIRING_OOB
220375a8e4faSMatthias Ringwald         case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA:
220475a8e4faSMatthias Ringwald         case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{
220575a8e4faSMatthias Ringwald             uint8_t event[67];
220675a8e4faSMatthias Ringwald             event[0] = GAP_EVENT_LOCAL_OOB_DATA;
220775a8e4faSMatthias Ringwald             event[1] = 65;
220875a8e4faSMatthias Ringwald             (void)memset(&event[2], 0, 65);
220975a8e4faSMatthias Ringwald             if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){
221075a8e4faSMatthias Ringwald                 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32);
221175a8e4faSMatthias Ringwald                 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){
221275a8e4faSMatthias Ringwald                     event[2] = 3;
221375a8e4faSMatthias Ringwald                     (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32);
221475a8e4faSMatthias Ringwald                 } else {
221575a8e4faSMatthias Ringwald                     event[2] = 1;
221675a8e4faSMatthias Ringwald                 }
221775a8e4faSMatthias Ringwald             }
221875a8e4faSMatthias Ringwald             hci_emit_event(event, sizeof(event), 0);
221975a8e4faSMatthias Ringwald             break;
222075a8e4faSMatthias Ringwald         }
2221e8c8828eSMatthias Ringwald #endif
222275a8e4faSMatthias Ringwald #endif
22236f35bb46SMatthias Ringwald         default:
22246f35bb46SMatthias Ringwald             break;
22254f781026SMatthias Ringwald     }
2226645b7c25SMatthias Ringwald }
22274f781026SMatthias Ringwald 
22280ce3f217SMatthias Ringwald #ifdef ENABLE_BLE
22290ce3f217SMatthias Ringwald static void event_handle_le_connection_complete(const uint8_t * packet){
22300ce3f217SMatthias Ringwald 	bd_addr_t addr;
22310ce3f217SMatthias Ringwald 	bd_addr_type_t addr_type;
22320ce3f217SMatthias Ringwald 	hci_connection_t * conn;
22330ce3f217SMatthias Ringwald 
22340ce3f217SMatthias Ringwald 	// Connection management
22350ce3f217SMatthias Ringwald 	reverse_bd_addr(&packet[8], addr);
22360ce3f217SMatthias Ringwald 	addr_type = (bd_addr_type_t)packet[7];
22370ce3f217SMatthias Ringwald 	log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr));
22380ce3f217SMatthias Ringwald 	conn = hci_connection_for_bd_addr_and_type(addr, addr_type);
22390ce3f217SMatthias Ringwald 
22400ce3f217SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
22410ce3f217SMatthias Ringwald 	// handle error: error is reported only to the initiator -> outgoing connection
22420ce3f217SMatthias Ringwald 	if (packet[3]){
22430ce3f217SMatthias Ringwald 
22440ce3f217SMatthias Ringwald 		// handle cancelled outgoing connection
22450ce3f217SMatthias Ringwald 		// "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command,
22460ce3f217SMatthias Ringwald 		//  either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated.
22470ce3f217SMatthias Ringwald 		//  In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)."
22480ce3f217SMatthias Ringwald 		if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){
22490ce3f217SMatthias Ringwald 			// whitelist connect
22500ce3f217SMatthias Ringwald 			if (hci_is_le_connection_type(addr_type)){
22510ce3f217SMatthias Ringwald 				hci_stack->le_connecting_state   = LE_CONNECTING_IDLE;
22520ce3f217SMatthias Ringwald 			}
22530ce3f217SMatthias Ringwald 			// get outgoing connection conn struct for direct connect
22540ce3f217SMatthias Ringwald 			conn = gap_get_outgoing_connection();
22550ce3f217SMatthias Ringwald 		}
22560ce3f217SMatthias Ringwald 
22570ce3f217SMatthias Ringwald 		// outgoing le connection establishment is done
22580ce3f217SMatthias Ringwald 		if (conn){
22590ce3f217SMatthias Ringwald 			// remove entry
22600ce3f217SMatthias Ringwald 			btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn);
22610ce3f217SMatthias Ringwald 			btstack_memory_hci_connection_free( conn );
22620ce3f217SMatthias Ringwald 		}
22630ce3f217SMatthias Ringwald 		return;
22640ce3f217SMatthias Ringwald 	}
22650ce3f217SMatthias Ringwald #endif
22660ce3f217SMatthias Ringwald 
22670ce3f217SMatthias Ringwald 	// on success, both hosts receive connection complete event
22680ce3f217SMatthias Ringwald 	if (packet[6] == HCI_ROLE_MASTER){
22690ce3f217SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
22700ce3f217SMatthias Ringwald 		// if we're master on an le connection, it was an outgoing connection and we're done with it
22710ce3f217SMatthias Ringwald 		// note: no hci_connection_t object exists yet for connect with whitelist
22720ce3f217SMatthias Ringwald 		if (hci_is_le_connection_type(addr_type)){
22730ce3f217SMatthias Ringwald 			hci_stack->le_connecting_state   = LE_CONNECTING_IDLE;
22740ce3f217SMatthias Ringwald 			hci_stack->le_connecting_request = LE_CONNECTING_IDLE;
22750ce3f217SMatthias Ringwald 		}
22760ce3f217SMatthias Ringwald #endif
22770ce3f217SMatthias Ringwald 	} else {
22780ce3f217SMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
22790ce3f217SMatthias Ringwald 		// if we're slave, it was an incoming connection, advertisements have stopped
22800ce3f217SMatthias Ringwald 		hci_stack->le_advertisements_active = false;
22810ce3f217SMatthias Ringwald #endif
22820ce3f217SMatthias Ringwald 	}
22830ce3f217SMatthias Ringwald 
22840ce3f217SMatthias Ringwald 	// LE connections are auto-accepted, so just create a connection if there isn't one already
22850ce3f217SMatthias Ringwald 	if (!conn){
22860ce3f217SMatthias Ringwald 		conn = create_connection_for_bd_addr_and_type(addr, addr_type);
22870ce3f217SMatthias Ringwald 	}
22880ce3f217SMatthias Ringwald 
22890ce3f217SMatthias Ringwald 	// no memory, sorry.
22900ce3f217SMatthias Ringwald 	if (!conn){
22910ce3f217SMatthias Ringwald 		return;
22920ce3f217SMatthias Ringwald 	}
22930ce3f217SMatthias Ringwald 
22940ce3f217SMatthias Ringwald 	conn->state = OPEN;
22950ce3f217SMatthias Ringwald 	conn->role  = packet[6];
22960ce3f217SMatthias Ringwald 	conn->con_handle             = hci_subevent_le_connection_complete_get_connection_handle(packet);
22970ce3f217SMatthias Ringwald 	conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet);
22980ce3f217SMatthias Ringwald 
22990ce3f217SMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
23000ce3f217SMatthias Ringwald 	if (packet[6] == HCI_ROLE_SLAVE){
23010ce3f217SMatthias Ringwald 		hci_update_advertisements_enabled_for_current_roles();
23020ce3f217SMatthias Ringwald 	}
23030ce3f217SMatthias Ringwald #endif
23040ce3f217SMatthias Ringwald 
2305dde9ff1eSMatthias Ringwald     // init unenhanced att bearer mtu
2306dde9ff1eSMatthias Ringwald     conn->att_connection.mtu = ATT_DEFAULT_MTU;
2307dde9ff1eSMatthias Ringwald     conn->att_connection.mtu_exchanged = false;
2308dde9ff1eSMatthias Ringwald 
23090ce3f217SMatthias Ringwald     // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock
23100ce3f217SMatthias Ringwald 
23110ce3f217SMatthias Ringwald 	// restart timer
23120ce3f217SMatthias Ringwald 	// btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS);
23130ce3f217SMatthias Ringwald 	// btstack_run_loop_add_timer(&conn->timeout);
23140ce3f217SMatthias Ringwald 
23150ce3f217SMatthias Ringwald 	log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address));
23160ce3f217SMatthias Ringwald 
23170ce3f217SMatthias Ringwald 	hci_emit_nr_connections_changed();
23180ce3f217SMatthias Ringwald }
23190ce3f217SMatthias Ringwald #endif
23200ce3f217SMatthias Ringwald 
2321c3b46f5aSMatthias Ringwald static void event_handler(uint8_t *packet, uint16_t size){
23224f781026SMatthias Ringwald 
23234f781026SMatthias Ringwald     uint16_t event_length = packet[1];
23244f781026SMatthias Ringwald 
23254f781026SMatthias Ringwald     // assert packet is complete
23264ea43905SMatthias Ringwald     if (size != (event_length + 2u)){
23274f781026SMatthias Ringwald         log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2);
23284f781026SMatthias Ringwald         return;
23294f781026SMatthias Ringwald     }
23304f781026SMatthias Ringwald 
23314f781026SMatthias Ringwald     bd_addr_type_t addr_type;
23324f781026SMatthias Ringwald     hci_con_handle_t handle;
23334f781026SMatthias Ringwald     hci_connection_t * conn;
23344f781026SMatthias Ringwald     int i;
23354f781026SMatthias Ringwald     int create_connection_cmd;
23364f781026SMatthias Ringwald 
23374f781026SMatthias Ringwald #ifdef ENABLE_CLASSIC
23385e91d96cSMatthias Ringwald     hci_link_type_t link_type;
233948f33f37SMatthias Ringwald     bd_addr_t addr;
23404f781026SMatthias Ringwald #endif
23414f781026SMatthias Ringwald 
23424f781026SMatthias Ringwald     // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet));
23434f781026SMatthias Ringwald 
23444f781026SMatthias Ringwald     switch (hci_event_packet_get_type(packet)) {
23454f781026SMatthias Ringwald 
23464f781026SMatthias Ringwald         case HCI_EVENT_COMMAND_COMPLETE:
23474f781026SMatthias Ringwald             handle_command_complete_event(packet, size);
234856cf178bSmatthias.ringwald             break;
234956cf178bSmatthias.ringwald 
23507ec5eeaaSmatthias.ringwald         case HCI_EVENT_COMMAND_STATUS:
23516bef4003SMatthias Ringwald             // get num cmd packets - limit to 1 to reduce complexity
23526bef4003SMatthias Ringwald             hci_stack->num_cmd_packets = packet[3] ? 1 : 0;
2353229331c6SMatthias Ringwald 
2354229331c6SMatthias Ringwald             // check command status to detected failed outgoing connections
2355c57fa566SMatthias Ringwald             create_connection_cmd = 0;
2356c57fa566SMatthias Ringwald #ifdef ENABLE_CLASSIC
2357c57fa566SMatthias Ringwald             if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_create_connection)){
2358c57fa566SMatthias Ringwald                 create_connection_cmd = 1;
2359c57fa566SMatthias Ringwald             }
2360c57fa566SMatthias Ringwald #endif
2361c57fa566SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
2362c57fa566SMatthias Ringwald             if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_le_create_connection)){
2363c57fa566SMatthias Ringwald                 create_connection_cmd = 1;
2364c57fa566SMatthias Ringwald             }
2365c57fa566SMatthias Ringwald #endif
2366c57fa566SMatthias Ringwald             if (create_connection_cmd) {
2367229331c6SMatthias Ringwald                 uint8_t status = hci_event_command_status_get_status(packet);
23688da98cbeSMatthias Ringwald                 addr_type = hci_stack->outgoing_addr_type;
23696ea9315cSMatthias Ringwald                 conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type);
23706ea9315cSMatthias Ringwald                 log_info("command status (create connection), status %x, connection %p, addr %s, type %x", status, conn, bd_addr_to_str(hci_stack->outgoing_addr), addr_type);
2371229331c6SMatthias Ringwald 
2372229331c6SMatthias Ringwald                 // reset outgoing address info
2373229331c6SMatthias Ringwald                 memset(hci_stack->outgoing_addr, 0, 6);
2374229331c6SMatthias Ringwald                 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN;
2375229331c6SMatthias Ringwald 
23766ea9315cSMatthias Ringwald                 // on error
23776ea9315cSMatthias Ringwald                 if (status != ERROR_CODE_SUCCESS){
2378f75e06adSMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
23796ea9315cSMatthias Ringwald                     if (hci_is_le_connection_type(addr_type)){
23806ea9315cSMatthias Ringwald                         hci_stack->le_connecting_state = LE_CONNECTING_IDLE;
23816ea9315cSMatthias Ringwald                     }
2382f75e06adSMatthias Ringwald #endif
2383229331c6SMatthias Ringwald                     // error => outgoing connection failed
23846ea9315cSMatthias Ringwald                     if (conn != NULL){
2385229331c6SMatthias Ringwald                         hci_handle_connection_failed(conn, status);
2386229331c6SMatthias Ringwald                     }
2387229331c6SMatthias Ringwald                 }
23886ea9315cSMatthias Ringwald             }
2389beb3c81dSMatthias Ringwald 
2390beb3c81dSMatthias Ringwald #ifdef ENABLE_CLASSIC
2391beb3c81dSMatthias Ringwald             if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_inquiry)) {
2392beb3c81dSMatthias Ringwald                 uint8_t status = hci_event_command_status_get_status(packet);
2393beb3c81dSMatthias Ringwald                 log_info("command status (inquiry), status %x", status);
2394beb3c81dSMatthias Ringwald                 if (status == ERROR_CODE_SUCCESS) {
2395beb3c81dSMatthias Ringwald                     hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE;
2396beb3c81dSMatthias Ringwald                 } else {
2397beb3c81dSMatthias Ringwald                     hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE;
2398beb3c81dSMatthias Ringwald                 }
2399beb3c81dSMatthias Ringwald             }
2400beb3c81dSMatthias Ringwald #endif
24017ec5eeaaSmatthias.ringwald             break;
24027ec5eeaaSmatthias.ringwald 
24032e440c8aS[email protected]         case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{
24049784dac1SMatthias Ringwald             if (size < 3) return;
24059784dac1SMatthias Ringwald             uint16_t num_handles = packet[2];
24064ea43905SMatthias Ringwald             if (size != (3u + num_handles * 4u)) return;
24079784dac1SMatthias Ringwald             uint16_t offset = 3;
24089784dac1SMatthias Ringwald             for (i=0; i<num_handles;i++){
24094ea43905SMatthias Ringwald                 handle = little_endian_read_16(packet, offset) & 0x0fffu;
24104ea43905SMatthias Ringwald                 offset += 2u;
2411f8fbdce0SMatthias Ringwald                 uint16_t num_packets = little_endian_read_16(packet, offset);
24124ea43905SMatthias Ringwald                 offset += 2u;
24132e440c8aS[email protected] 
24145061f3afS[email protected]                 conn = hci_connection_for_handle(handle);
241556cf178bSmatthias.ringwald                 if (!conn){
24169da54300S[email protected]                     log_error("hci_number_completed_packet lists unused con handle %u", handle);
241756cf178bSmatthias.ringwald                     continue;
241856cf178bSmatthias.ringwald                 }
241923bed257S[email protected] 
2420ce41473eSMatthias Ringwald                 if (conn->num_packets_sent >= num_packets){
2421ce41473eSMatthias Ringwald                     conn->num_packets_sent -= num_packets;
2422e35edcc1S[email protected]                 } else {
2423ce41473eSMatthias Ringwald                     log_error("hci_number_completed_packets, more packet slots freed then sent.");
2424ce41473eSMatthias Ringwald                     conn->num_packets_sent = 0;
2425e35edcc1S[email protected]                 }
2426ce41473eSMatthias Ringwald                 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent);
2427760b20efSMatthias Ringwald 
2428760b20efSMatthias Ringwald #ifdef ENABLE_CLASSIC
2429760b20efSMatthias Ringwald                 // For SCO, we do the can_send_now_check here
2430760b20efSMatthias Ringwald                 hci_notify_if_sco_can_send_now();
2431760b20efSMatthias Ringwald #endif
243256cf178bSmatthias.ringwald             }
24336772a24cSmatthias.ringwald             break;
24342e440c8aS[email protected]         }
243535454696SMatthias Ringwald 
243635454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
2437f5875de5SMatthias Ringwald         case HCI_EVENT_INQUIRY_COMPLETE:
2438f5875de5SMatthias Ringwald             if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){
2439f5875de5SMatthias Ringwald                 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE;
2440f5875de5SMatthias Ringwald                 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0};
2441f5875de5SMatthias Ringwald                 hci_emit_event(event, sizeof(event), 1);
2442f5875de5SMatthias Ringwald             }
2443f5875de5SMatthias Ringwald             break;
2444b7f1ee76SMatthias Ringwald         case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE:
2445b7f1ee76SMatthias Ringwald             if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){
2446b7f1ee76SMatthias Ringwald                 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE;
2447b7f1ee76SMatthias Ringwald             }
2448b7f1ee76SMatthias Ringwald             break;
24491f7b95a1Smatthias.ringwald         case HCI_EVENT_CONNECTION_REQUEST:
2450724d70a2SMatthias Ringwald             reverse_bd_addr(&packet[2], addr);
24515e91d96cSMatthias Ringwald             link_type = (hci_link_type_t) packet[11];
245207e010b6SMilanka Ringwald             if (hci_stack->gap_classic_accept_callback != NULL){
24535e91d96cSMatthias Ringwald                 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){
24544536712cSMilanka Ringwald                     hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR;
245507e010b6SMilanka Ringwald                     bd_addr_copy(hci_stack->decline_addr, addr);
245607e010b6SMilanka Ringwald                     break;
245707e010b6SMilanka Ringwald                 }
245807e010b6SMilanka Ringwald             }
245907e010b6SMilanka Ringwald 
246037eaa4cfSmatthias.ringwald             // TODO: eval COD 8-10
24615e91d96cSMatthias Ringwald             log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type);
24625e91d96cSMatthias Ringwald             addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO;
24632e77e513S[email protected]             conn = hci_connection_for_bd_addr_and_type(addr, addr_type);
24641f7b95a1Smatthias.ringwald             if (!conn) {
24655293c072S[email protected]                 conn = create_connection_for_bd_addr_and_type(addr, addr_type);
24661f7b95a1Smatthias.ringwald             }
2467ce4c8fabSmatthias.ringwald             if (!conn) {
2468ce4c8fabSmatthias.ringwald                 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D)
24694536712cSMilanka Ringwald                 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES;
2470058e3d6bSMatthias Ringwald                 bd_addr_copy(hci_stack->decline_addr, addr);
2471ce4c8fabSmatthias.ringwald                 break;
2472ce4c8fabSmatthias.ringwald             }
24735cf766e8SMatthias Ringwald             conn->role  = HCI_ROLE_SLAVE;
247432ab9390Smatthias.ringwald             conn->state = RECEIVED_CONNECTION_REQUEST;
2475f3a16b9aSMatthias Ringwald             // store info about eSCO
24765e91d96cSMatthias Ringwald             if (link_type == HCI_LINK_TYPE_ESCO){
247776ccfb2aSMatthias Ringwald                 conn->remote_supported_features[0] |= 1;
2478f3a16b9aSMatthias Ringwald             }
247932ab9390Smatthias.ringwald             hci_run();
24801f7b95a1Smatthias.ringwald             break;
24811f7b95a1Smatthias.ringwald 
24826772a24cSmatthias.ringwald         case HCI_EVENT_CONNECTION_COMPLETE:
2483fe1ed1b8Smatthias.ringwald             // Connection management
2484724d70a2SMatthias Ringwald             reverse_bd_addr(&packet[5], addr);
24859da54300S[email protected]             log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr));
2486f16129ceSMatthias Ringwald             addr_type = BD_ADDR_TYPE_ACL;
24872e77e513S[email protected]             conn = hci_connection_for_bd_addr_and_type(addr, addr_type);
2488fe1ed1b8Smatthias.ringwald             if (conn) {
2489b448a0e7Smatthias.ringwald                 if (!packet[2]){
2490c8e4258aSmatthias.ringwald                     conn->state = OPEN;
2491f8fbdce0SMatthias Ringwald                     conn->con_handle = little_endian_read_16(packet, 3);
24926909f064SMatthias Ringwald 
24936909f064SMatthias Ringwald                     // queue get remote feature
2494ba018746SMatthias Ringwald                     conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_0;
2495ee091cf1Smatthias.ringwald 
2496e6c51921SMatthias Ringwald                     // queue set supervision timeout if we're master
2497a1df452eSMatthias Ringwald                     if ((hci_stack->link_supervision_timeout != 0) && (conn->role == HCI_ROLE_MASTER)){
24986909f064SMatthias Ringwald                         connectionSetAuthenticationFlags(conn, WRITE_SUPERVISION_TIMEOUT);
24996909f064SMatthias Ringwald                     }
25006909f064SMatthias Ringwald 
2501c785ef68Smatthias.ringwald                     // restart timer
2502528a4a3bSMatthias Ringwald                     btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS);
2503528a4a3bSMatthias Ringwald                     btstack_run_loop_add_timer(&conn->timeout);
2504c785ef68Smatthias.ringwald 
25059da54300S[email protected]                     log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address));
250643bfb1bdSmatthias.ringwald 
250743bfb1bdSmatthias.ringwald                     hci_emit_nr_connections_changed();
2508b448a0e7Smatthias.ringwald                 } else {
25090bbba85bSMatthias Ringwald                     // connection failed
25100bbba85bSMatthias Ringwald                     hci_handle_connection_failed(conn, packet[2]);
2511fe1ed1b8Smatthias.ringwald                 }
2512fe1ed1b8Smatthias.ringwald             }
25136772a24cSmatthias.ringwald             break;
2514fe1ed1b8Smatthias.ringwald 
251544d0e3d5S[email protected]         case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE:
2516724d70a2SMatthias Ringwald             reverse_bd_addr(&packet[5], addr);
251744d0e3d5S[email protected]             log_info("Synchronous Connection Complete (status=%u) %s", packet[2], bd_addr_to_str(addr));
25181a06f663S[email protected]             if (packet[2]){
251944d0e3d5S[email protected]                 // connection failed
252044d0e3d5S[email protected]                 break;
252144d0e3d5S[email protected]             }
25222e77e513S[email protected]             conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO);
2523e35edcc1S[email protected]             if (!conn) {
2524e35edcc1S[email protected]                 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO);
2525e35edcc1S[email protected]             }
2526e35edcc1S[email protected]             if (!conn) {
2527e35edcc1S[email protected]                 break;
2528e35edcc1S[email protected]             }
25291a06f663S[email protected]             conn->state = OPEN;
2530f8fbdce0SMatthias Ringwald             conn->con_handle = little_endian_read_16(packet, 3);
2531ee752bb8SMatthias Ringwald 
2532ee752bb8SMatthias Ringwald #ifdef ENABLE_SCO_OVER_HCI
2533ee752bb8SMatthias Ringwald             // update SCO
2534ee752bb8SMatthias Ringwald             if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){
2535ee752bb8SMatthias Ringwald                 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections());
2536ee752bb8SMatthias Ringwald             }
2537f234b250SMatthias Ringwald             // trigger can send now
2538f234b250SMatthias Ringwald             if (hci_have_usb_transport()){
2539f234b250SMatthias Ringwald                 hci_stack->sco_can_send_now = 1;
2540f234b250SMatthias Ringwald             }
2541ee752bb8SMatthias Ringwald #endif
2542cb70c5abSMatthias Ringwald #ifdef HAVE_SCO_TRANSPORT
2543cb70c5abSMatthias Ringwald             // configure sco transport
2544cb70c5abSMatthias Ringwald             if (hci_stack->sco_transport != NULL){
2545cb70c5abSMatthias Ringwald                 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT;
2546cb70c5abSMatthias Ringwald                 hci_stack->sco_transport->open(conn->con_handle, sco_format);
2547cb70c5abSMatthias Ringwald             }
2548cb70c5abSMatthias Ringwald #endif
254944d0e3d5S[email protected]             break;
255044d0e3d5S[email protected] 
2551afd4e962S[email protected]         case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE:
2552f8fbdce0SMatthias Ringwald             handle = little_endian_read_16(packet, 3);
2553afd4e962S[email protected]             conn = hci_connection_for_handle(handle);
2554afd4e962S[email protected]             if (!conn) break;
2555afd4e962S[email protected]             if (!packet[2]){
25562f5c44baSMatthias Ringwald                 const uint8_t * features = &packet[5];
25572f5c44baSMatthias Ringwald                 hci_handle_remote_features_page_0(conn, features);
25582f5c44baSMatthias Ringwald 
25595ccef624SMatthias Ringwald                 // read extended features if possible
25605ccef624SMatthias Ringwald                 if (((hci_stack->local_supported_commands[1] & 1) != 0) && ((conn->remote_supported_features[0] & 2) != 0)) {
25615ccef624SMatthias Ringwald                     conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1;
25625ccef624SMatthias Ringwald                     break;
25635ccef624SMatthias Ringwald                 }
25645ccef624SMatthias Ringwald             }
25655ccef624SMatthias Ringwald             hci_handle_remote_features_received(conn);
25665ccef624SMatthias Ringwald             break;
25675ccef624SMatthias Ringwald 
25685ccef624SMatthias Ringwald         case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE:
25695ccef624SMatthias Ringwald             handle = little_endian_read_16(packet, 3);
25705ccef624SMatthias Ringwald             conn = hci_connection_for_handle(handle);
25715ccef624SMatthias Ringwald             if (!conn) break;
25725ccef624SMatthias Ringwald             // status = ok, page = 1
257350c51a77SMatthias Ringwald             if (!packet[2]) {
257450c51a77SMatthias Ringwald                 uint8_t page_number = packet[5];
257550c51a77SMatthias Ringwald                 uint8_t maximum_page_number = packet[6];
25765ccef624SMatthias Ringwald                 const uint8_t * features = &packet[7];
257750c51a77SMatthias Ringwald                 bool done = false;
257850c51a77SMatthias Ringwald                 switch (page_number){
257950c51a77SMatthias Ringwald                     case 1:
25802f5c44baSMatthias Ringwald                         hci_handle_remote_features_page_1(conn, features);
258150c51a77SMatthias Ringwald                         if (maximum_page_number >= 2){
258250c51a77SMatthias Ringwald                             // get Secure Connections (Controller) from Page 2 if available
258350c51a77SMatthias Ringwald                             conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2;
258450c51a77SMatthias Ringwald                         } else {
258550c51a77SMatthias Ringwald                             // otherwise, assume SC (Controller) == SC (Host)
258650c51a77SMatthias Ringwald                             if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){
258750c51a77SMatthias Ringwald                                 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER;
258850c51a77SMatthias Ringwald                             }
258950c51a77SMatthias Ringwald                             done = true;
259050c51a77SMatthias Ringwald                         }
259150c51a77SMatthias Ringwald                         break;
259250c51a77SMatthias Ringwald                     case 2:
259350c51a77SMatthias Ringwald                         hci_handle_remote_features_page_2(conn, features);
259450c51a77SMatthias Ringwald                         done = true;
259550c51a77SMatthias Ringwald                         break;
259650c51a77SMatthias Ringwald                     default:
259750c51a77SMatthias Ringwald                         break;
259850c51a77SMatthias Ringwald                 }
259950c51a77SMatthias Ringwald                 if (!done) break;
2600afd4e962S[email protected]             }
2601de0df013SMatthias Ringwald             hci_handle_remote_features_received(conn);
2602afd4e962S[email protected]             break;
2603afd4e962S[email protected] 
26047fde4af9Smatthias.ringwald         case HCI_EVENT_LINK_KEY_REQUEST:
26059da54300S[email protected]             log_info("HCI_EVENT_LINK_KEY_REQUEST");
26067fde4af9Smatthias.ringwald             hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_REQUEST);
2607608f51bbSMatthias Ringwald             // request handled by hci_run()
260832ab9390Smatthias.ringwald             hci_add_connection_flags_for_flipped_bd_addr(&packet[2], HANDLE_LINK_KEY_REQUEST);
2609608f51bbSMatthias Ringwald             break;
26107fde4af9Smatthias.ringwald 
26119ab95c90S[email protected]         case HCI_EVENT_LINK_KEY_NOTIFICATION: {
2612724d70a2SMatthias Ringwald             reverse_bd_addr(&packet[2], addr);
2613f16129ceSMatthias Ringwald             conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL);
26149ab95c90S[email protected]             if (!conn) break;
26159ab95c90S[email protected]             conn->authentication_flags |= RECV_LINK_KEY_NOTIFICATION;
26167bdc6798S[email protected]             link_key_type_t link_key_type = (link_key_type_t)packet[24];
26179ab95c90S[email protected]             // Change Connection Encryption keeps link key type
26189ab95c90S[email protected]             if (link_key_type != CHANGED_COMBINATION_KEY){
26199ab95c90S[email protected]                 conn->link_key_type = link_key_type;
26209ab95c90S[email protected]             }
262155597469SMatthias Ringwald             gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type);
262229d53098Smatthias.ringwald             // still forward event to allow dismiss of pairing dialog
26237fde4af9Smatthias.ringwald             break;
26249ab95c90S[email protected]         }
26257fde4af9Smatthias.ringwald 
26267fde4af9Smatthias.ringwald         case HCI_EVENT_PIN_CODE_REQUEST:
26276724cd9eS[email protected]             hci_add_connection_flags_for_flipped_bd_addr(&packet[2], LEGACY_PAIRING_ACTIVE);
26284c57c146S[email protected]             // non-bondable mode: pin code negative reply will be sent
26293a9fb326S[email protected]             if (!hci_stack->bondable){
2630899283eaS[email protected]                 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], DENY_PIN_CODE_REQUEST);
2631f8fb5f6eS[email protected]                 hci_run();
2632f8fb5f6eS[email protected]                 return;
26334c57c146S[email protected]             }
2634d9a327f9Smatthias.ringwald             // PIN CODE REQUEST means the link key request didn't succee -> delete stored link key
2635a98592bcSMatthias Ringwald             if (!hci_stack->link_key_db) break;
2636a6ef64baSMilanka Ringwald             hci_event_pin_code_request_get_bd_addr(packet, addr);
2637a98592bcSMatthias Ringwald             hci_stack->link_key_db->delete_link_key(addr);
26387fde4af9Smatthias.ringwald             break;
26397fde4af9Smatthias.ringwald 
26401d6b20aeS[email protected]         case HCI_EVENT_IO_CAPABILITY_REQUEST:
26411d6b20aeS[email protected]             hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_IO_CAPABILITIES_REQUEST);
264211b03efaSMatthias Ringwald             log_info("IO Capability Request received, stack bondable %u, io cap %u", hci_stack->bondable, hci_stack->ssp_io_capability);
264344565b0cSMatthias Ringwald #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY
264411b03efaSMatthias Ringwald             if (hci_stack->bondable && (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN)){
2645dbe1a790S[email protected]                 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_IO_CAPABILITIES_REPLY);
264611b03efaSMatthias Ringwald             } else {
264711b03efaSMatthias Ringwald                 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_IO_CAPABILITIES_NEGATIVE_REPLY);
264811b03efaSMatthias Ringwald             }
264944565b0cSMatthias Ringwald #endif
2650dbe1a790S[email protected]             break;
2651dbe1a790S[email protected] 
26521849becdSMatthias Ringwald #ifdef ENABLE_CLASSIC_PAIRING_OOB
26531849becdSMatthias Ringwald         case HCI_EVENT_REMOTE_OOB_DATA_REQUEST:
26541849becdSMatthias Ringwald             hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SSP_PAIRING_ACTIVE);
26551849becdSMatthias Ringwald             hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_REMOTE_OOB_DATA_REPLY);
26561849becdSMatthias Ringwald             break;
26571849becdSMatthias Ringwald #endif
26581849becdSMatthias Ringwald 
2659dbe1a790S[email protected]         case HCI_EVENT_USER_CONFIRMATION_REQUEST:
26606724cd9eS[email protected]             hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SSP_PAIRING_ACTIVE);
26613a9fb326S[email protected]             if (!hci_stack->ssp_auto_accept) break;
2662dbe1a790S[email protected]             hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_USER_CONFIRM_REPLY);
2663dbe1a790S[email protected]             break;
2664dbe1a790S[email protected] 
2665dbe1a790S[email protected]         case HCI_EVENT_USER_PASSKEY_REQUEST:
26666724cd9eS[email protected]             hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SSP_PAIRING_ACTIVE);
26673a9fb326S[email protected]             if (!hci_stack->ssp_auto_accept) break;
2668dbe1a790S[email protected]             hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_USER_PASSKEY_REPLY);
26691d6b20aeS[email protected]             break;
26701849becdSMatthias Ringwald 
26713dce6128SMatthias Ringwald         case HCI_EVENT_MODE_CHANGE:
26723dce6128SMatthias Ringwald             handle = hci_event_mode_change_get_handle(packet);
26733dce6128SMatthias Ringwald             conn = hci_connection_for_handle(handle);
26743dce6128SMatthias Ringwald             if (!conn) break;
26753dce6128SMatthias Ringwald             conn->connection_mode = hci_event_mode_change_get_mode(packet);
26763dce6128SMatthias Ringwald             log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode);
26773dce6128SMatthias Ringwald             break;
267835454696SMatthias Ringwald #endif
26791d6b20aeS[email protected] 
2680f0944df2S[email protected]         case HCI_EVENT_ENCRYPTION_CHANGE:
2681254b78eeSMatthias Ringwald             handle = hci_event_encryption_change_get_connection_handle(packet);
2682f0944df2S[email protected]             conn = hci_connection_for_handle(handle);
2683f0944df2S[email protected]             if (!conn) break;
26844ea43905SMatthias Ringwald             if (hci_event_encryption_change_get_status(packet) == 0u) {
2685254b78eeSMatthias Ringwald                 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet);
2686254b78eeSMatthias Ringwald                 if (encryption_enabled){
2687573897a0SMatthias Ringwald                     if (hci_is_le_connection(conn)){
2688573897a0SMatthias Ringwald                         // For LE, we accept connection as encrypted
2689f0944df2S[email protected]                         conn->authentication_flags |= CONNECTION_ENCRYPTED;
2690573897a0SMatthias Ringwald                     }
2691573897a0SMatthias Ringwald #ifdef ENABLE_CLASSIC
2692573897a0SMatthias Ringwald                     else {
2693254b78eeSMatthias Ringwald                         // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS)
2694254b78eeSMatthias Ringwald                         bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type) != 0;
2695254b78eeSMatthias Ringwald                         bool connected_uses_aes_ccm = encryption_enabled == 2;
2696edc1ac20SMatthias Ringwald                         if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){
2697254b78eeSMatthias Ringwald                             log_info("SC during pairing, but only E0 now -> abort");
26989ece71c2SMatthias Ringwald                             conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK;
2699254b78eeSMatthias Ringwald                             break;
2700254b78eeSMatthias Ringwald                         }
2701254b78eeSMatthias Ringwald 
27024a659b0eSMatthias Ringwald                         // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication
2703378d29b4SMatthias Ringwald                         if (connected_uses_aes_ccm){
27044a659b0eSMatthias Ringwald                             conn->authentication_flags |= CONNECTION_AUTHENTICATED;
2705378d29b4SMatthias Ringwald                         }
27064a659b0eSMatthias Ringwald 
27076e058d3fSMatthias Ringwald                         if ((hci_stack->local_supported_commands[0] & 0x80) != 0){
27086e058d3fSMatthias Ringwald                             // For Classic, we need to validate encryption key size first, if possible (== supported by Controller)
2709573897a0SMatthias Ringwald                             conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE;
27106e058d3fSMatthias Ringwald                         } else {
27116e058d3fSMatthias Ringwald                             // if not, pretend everything is perfect
27129866fdc7SMatthias Ringwald                             hci_handle_read_encryption_key_size_complete(conn, 16);
27136e058d3fSMatthias Ringwald                         }
2714573897a0SMatthias Ringwald                     }
2715573897a0SMatthias Ringwald #endif
2716f0944df2S[email protected]                 } else {
2717536f9994S[email protected]                     conn->authentication_flags &= ~CONNECTION_ENCRYPTED;
2718f0944df2S[email protected]                 }
2719ad83dc6aS[email protected]             }
2720573897a0SMatthias Ringwald 
2721f0944df2S[email protected]             break;
2722f0944df2S[email protected] 
272335454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
27241eb2563eS[email protected]         case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT:
2725abdad579SMatthias Ringwald             handle = hci_event_authentication_complete_get_connection_handle(packet);
27261eb2563eS[email protected]             conn = hci_connection_for_handle(handle);
27271eb2563eS[email protected]             if (!conn) break;
2728ad83dc6aS[email protected] 
272963fc2b30SMatthias Ringwald             // ignore authentication event if we didn't request it
273063fc2b30SMatthias Ringwald             if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) break;
273163fc2b30SMatthias Ringwald 
2732ad83dc6aS[email protected]             // dedicated bonding: send result and disconnect
2733ad83dc6aS[email protected]             if (conn->bonding_flags & BONDING_DEDICATED){
2734ad83dc6aS[email protected]                 conn->bonding_flags &= ~BONDING_DEDICATED;
2735ad83dc6aS[email protected]                 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE;
27361bd5283dS[email protected]                 conn->bonding_status = packet[2];
2737ad83dc6aS[email protected]                 break;
2738ad83dc6aS[email protected]             }
2739ad83dc6aS[email protected] 
2740abdad579SMatthias Ringwald             // authenticated only if auth status == 0
2741abdad579SMatthias Ringwald             if (hci_event_authentication_complete_get_status(packet) == 0){
2742abdad579SMatthias Ringwald                 // authenticated
2743abdad579SMatthias Ringwald                 conn->authentication_flags |= CONNECTION_AUTHENTICATED;
2744abdad579SMatthias Ringwald 
2745abdad579SMatthias Ringwald                 // If link key sufficient for requested security and not already encrypted, start encryption
2746abdad579SMatthias Ringwald                 if (((gap_security_level_for_link_key_type(conn->link_key_type) >= conn->requested_security_level)) &&
2747abdad579SMatthias Ringwald                     ((conn->authentication_flags & CONNECTION_ENCRYPTED) == 0)){
27481eb2563eS[email protected]                     conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST;
2749ad83dc6aS[email protected]                     break;
2750ad83dc6aS[email protected]                 }
2751abdad579SMatthias Ringwald             }
2752abdad579SMatthias Ringwald 
2753abdad579SMatthias Ringwald             // emit updated security level
27541eb2563eS[email protected]             hci_emit_security_level(handle, gap_security_level_for_connection(conn));
27551eb2563eS[email protected]             break;
275635454696SMatthias Ringwald #endif
275734d2123cS[email protected] 
275886805605S[email protected]         // HCI_EVENT_DISCONNECTION_COMPLETE
2759ccda6e14S[email protected]         // has been split, to first notify stack before shutting connection down
2760ccda6e14S[email protected]         // see end of function, too.
2761a4f30ec0S[email protected]         case HCI_EVENT_DISCONNECTION_COMPLETE:
2762a4f30ec0S[email protected]             if (packet[2]) break;   // status != 0
2763f8fbdce0SMatthias Ringwald             handle = little_endian_read_16(packet, 3);
276481d2bdb2SMatthias Ringwald             // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active
27654ea43905SMatthias Ringwald             if (hci_stack->acl_fragmentation_total_size > 0u) {
2766c6a37cfdSMatthias Ringwald                 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){
27674ea43905SMatthias Ringwald                     int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u;
276881d2bdb2SMatthias Ringwald                     log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer);
2769c6a37cfdSMatthias Ringwald                     hci_stack->acl_fragmentation_total_size = 0;
2770c6a37cfdSMatthias Ringwald                     hci_stack->acl_fragmentation_pos = 0;
277181d2bdb2SMatthias Ringwald                     if (release_buffer){
277281d2bdb2SMatthias Ringwald                         hci_release_packet_buffer();
277381d2bdb2SMatthias Ringwald                     }
2774c6a37cfdSMatthias Ringwald                 }
2775c6a37cfdSMatthias Ringwald             }
277635454696SMatthias Ringwald 
2777c6a37cfdSMatthias Ringwald             conn = hci_connection_for_handle(handle);
2778c6a37cfdSMatthias Ringwald             if (!conn) break;
2779046ec007SMatthias Ringwald             // mark connection for shutdown
2780a70e17d4SMatthias Ringwald             conn->state = RECEIVED_DISCONNECTION_COMPLETE;
2781046ec007SMatthias Ringwald 
2782046ec007SMatthias Ringwald             // emit dedicatd bonding event
2783046ec007SMatthias Ringwald             if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){
2784046ec007SMatthias Ringwald                 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status);
2785046ec007SMatthias Ringwald             }
2786046ec007SMatthias Ringwald 
278735454696SMatthias Ringwald #ifdef ENABLE_BLE
2788d70217a2SMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
2789046ec007SMatthias Ringwald             // re-enable advertisements for le connections if active
27902b6ab3e6SMatthias Ringwald             if (hci_is_le_connection(conn)){
2791bbc366e6SMatthias Ringwald                 hci_update_advertisements_enabled_for_current_roles();
27929a2e4658SMatthias Ringwald             }
279335454696SMatthias Ringwald #endif
2794d70217a2SMatthias Ringwald #endif
2795ccda6e14S[email protected]             break;
27966772a24cSmatthias.ringwald 
2797c68bdf90Smatthias.ringwald         case HCI_EVENT_HARDWARE_ERROR:
2798313e5f9cSMatthias Ringwald             log_error("Hardware Error: 0x%02x", packet[2]);
2799d23838ecSMatthias Ringwald             if (hci_stack->hardware_error_callback){
2800c2e1fa60SMatthias Ringwald                 (*hci_stack->hardware_error_callback)(packet[2]);
28017586ee35S[email protected]             } else {
28027586ee35S[email protected]                 // if no special requests, just reboot stack
28037586ee35S[email protected]                 hci_power_control_off();
28047586ee35S[email protected]                 hci_power_control_on();
2805c68bdf90Smatthias.ringwald             }
2806c68bdf90Smatthias.ringwald             break;
2807c68bdf90Smatthias.ringwald 
28080e6f3837SMatthias Ringwald #ifdef ENABLE_CLASSIC
28095cf766e8SMatthias Ringwald         case HCI_EVENT_ROLE_CHANGE:
28105cf766e8SMatthias Ringwald             if (packet[2]) break;   // status != 0
2811c4c88f1bSJakob Krantz             reverse_bd_addr(&packet[3], addr);
2812f16129ceSMatthias Ringwald             addr_type = BD_ADDR_TYPE_ACL;
2813c4c88f1bSJakob Krantz             conn = hci_connection_for_bd_addr_and_type(addr, addr_type);
2814c4c88f1bSJakob Krantz             if (!conn) break;
28155cf766e8SMatthias Ringwald             conn->role = packet[9];
28165cf766e8SMatthias Ringwald             break;
28170e6f3837SMatthias Ringwald #endif
28185cf766e8SMatthias Ringwald 
281963fa3374SMatthias Ringwald         case HCI_EVENT_TRANSPORT_PACKET_SENT:
2820d051460cS[email protected]             // release packet buffer only for asynchronous transport and if there are not further fragements
28214fa24b5fS[email protected]             if (hci_transport_synchronous()) {
282263fa3374SMatthias Ringwald                 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT");
28234fa24b5fS[email protected]                 return; // instead of break: to avoid re-entering hci_run()
28244fa24b5fS[email protected]             }
282581d2bdb2SMatthias Ringwald             hci_stack->acl_fragmentation_tx_active = 0;
2826d051460cS[email protected]             if (hci_stack->acl_fragmentation_total_size) break;
2827d051460cS[email protected]             hci_release_packet_buffer();
2828701e3307SMatthias Ringwald 
282963fa3374SMatthias Ringwald             // L2CAP receives this event via the hci_emit_event below
283063fa3374SMatthias Ringwald 
283135454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
283263fa3374SMatthias Ringwald             // For SCO, we do the can_send_now_check here
2833701e3307SMatthias Ringwald             hci_notify_if_sco_can_send_now();
283435454696SMatthias Ringwald #endif
28356b4af23dS[email protected]             break;
28366b4af23dS[email protected] 
283735454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
283863fa3374SMatthias Ringwald         case HCI_EVENT_SCO_CAN_SEND_NOW:
283963fa3374SMatthias Ringwald             // For SCO, we do the can_send_now_check here
2840f234b250SMatthias Ringwald             hci_stack->sco_can_send_now = 1;
284163fa3374SMatthias Ringwald             hci_notify_if_sco_can_send_now();
284263fa3374SMatthias Ringwald             return;
28431cfb383eSMatthias Ringwald 
28441cfb383eSMatthias Ringwald         // explode inquriy results for easier consumption
28451cfb383eSMatthias Ringwald         case HCI_EVENT_INQUIRY_RESULT:
28461cfb383eSMatthias Ringwald         case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI:
28471cfb383eSMatthias Ringwald         case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE:
28489784dac1SMatthias Ringwald             gap_inquiry_explode(packet, size);
28491cfb383eSMatthias Ringwald             break;
285035454696SMatthias Ringwald #endif
285163fa3374SMatthias Ringwald 
2852a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
28535909f7f2Smatthias.ringwald         case HCI_EVENT_LE_META:
28545909f7f2Smatthias.ringwald             switch (packet[2]){
2855d70217a2SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
285657c9da5bS[email protected]                 case HCI_SUBEVENT_LE_ADVERTISING_REPORT:
28574f4e0224SMatthias Ringwald                     // log_info("advertising report received");
28586fab74dbSMatthias Ringwald                     if (!hci_stack->le_scanning_enabled) break;
285957c9da5bS[email protected]                     le_handle_advertisement_report(packet, size);
28607bdc6798S[email protected]                     break;
2861d70217a2SMatthias Ringwald #endif
28625909f7f2Smatthias.ringwald                 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE:
28630ce3f217SMatthias Ringwald 					event_handle_le_connection_complete(packet);
28645909f7f2Smatthias.ringwald                     break;
28655909f7f2Smatthias.ringwald 
2866f8fbdce0SMatthias Ringwald                 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]);
2867c9db5c21SMilanka Ringwald                 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE:
2868c9db5c21SMilanka Ringwald                     handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet);
2869c9db5c21SMilanka Ringwald                     conn = hci_connection_for_handle(handle);
2870c9db5c21SMilanka Ringwald                     if (!conn) break;
2871c9db5c21SMilanka Ringwald                     conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet);
2872c9db5c21SMilanka Ringwald                     break;
287365a46ef3S[email protected] 
287473cd8a2aSMatthias Ringwald                 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST:
287573cd8a2aSMatthias Ringwald                     // connection
287673cd8a2aSMatthias Ringwald                     handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet);
287773cd8a2aSMatthias Ringwald                     conn = hci_connection_for_handle(handle);
287873cd8a2aSMatthias Ringwald                     if (conn) {
287973cd8a2aSMatthias Ringwald                         // read arguments
288073cd8a2aSMatthias Ringwald                         uint16_t le_conn_interval_min   = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet);
288173cd8a2aSMatthias Ringwald                         uint16_t le_conn_interval_max   = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet);
288273cd8a2aSMatthias Ringwald                         uint16_t le_conn_latency        = hci_subevent_le_remote_connection_parameter_request_get_latency(packet);
288373cd8a2aSMatthias Ringwald                         uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet);
288473cd8a2aSMatthias Ringwald 
288573cd8a2aSMatthias Ringwald                         // validate against current connection parameter range
288673cd8a2aSMatthias Ringwald                         le_connection_parameter_range_t existing_range;
288773cd8a2aSMatthias Ringwald                         gap_get_connection_parameter_range(&existing_range);
288873cd8a2aSMatthias Ringwald                         int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout);
288973cd8a2aSMatthias Ringwald                         if (update_parameter){
289073cd8a2aSMatthias Ringwald                             conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY;
289173cd8a2aSMatthias Ringwald                             conn->le_conn_interval_min = le_conn_interval_min;
289273cd8a2aSMatthias Ringwald                             conn->le_conn_interval_max = le_conn_interval_max;
289373cd8a2aSMatthias Ringwald                             conn->le_conn_latency = le_conn_latency;
289473cd8a2aSMatthias Ringwald                             conn->le_supervision_timeout = le_supervision_timeout;
289573cd8a2aSMatthias Ringwald                         } else {
2896c3898ca4SMatthias Ringwald                             conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY;
289773cd8a2aSMatthias Ringwald                         }
289873cd8a2aSMatthias Ringwald                     }
289973cd8a2aSMatthias Ringwald                     break;
29000f3b27c5SMatthias Ringwald #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS
29010f3b27c5SMatthias Ringwald                 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE:
29020f3b27c5SMatthias Ringwald                     handle = hci_subevent_le_data_length_change_get_connection_handle(packet);
29030f3b27c5SMatthias Ringwald                     conn = hci_connection_for_handle(handle);
29040f3b27c5SMatthias Ringwald                     if (conn) {
29050f3b27c5SMatthias Ringwald                         conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet);
29060f3b27c5SMatthias Ringwald                     }
29070f3b27c5SMatthias Ringwald                     break;
29080f3b27c5SMatthias Ringwald #endif
29095909f7f2Smatthias.ringwald                 default:
29105909f7f2Smatthias.ringwald                     break;
29115909f7f2Smatthias.ringwald             }
29125909f7f2Smatthias.ringwald             break;
29135909f7f2Smatthias.ringwald #endif
29140b36101dSMatthias Ringwald         case HCI_EVENT_VENDOR_SPECIFIC:
29150b36101dSMatthias Ringwald             // Vendor specific commands often create vendor specific event instead of num completed packets
29160b36101dSMatthias Ringwald             // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour
29170b36101dSMatthias Ringwald             switch (hci_stack->manufacturer){
29180b36101dSMatthias Ringwald                 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO:
29190b36101dSMatthias Ringwald                     hci_stack->num_cmd_packets = 1;
29200b36101dSMatthias Ringwald                     break;
29210b36101dSMatthias Ringwald                 default:
29220b36101dSMatthias Ringwald                     break;
29230b36101dSMatthias Ringwald             }
29240b36101dSMatthias Ringwald             break;
29256772a24cSmatthias.ringwald         default:
29266772a24cSmatthias.ringwald             break;
2927fe1ed1b8Smatthias.ringwald     }
2928fe1ed1b8Smatthias.ringwald 
292967c6c9dcSMatthias Ringwald     handle_event_for_current_stack_state(packet, size);
293089db417bSmatthias.ringwald 
293186805605S[email protected]     // notify upper stack
2932d6b06661SMatthias Ringwald 	hci_emit_event(packet, size, 0);   // don't dump, already happened in packet handler
293394ab26f8Smatthias.ringwald 
293486805605S[email protected]     // moved here to give upper stack a chance to close down everything with hci_connection_t intact
2935797b2a3fSMatthias Ringwald     if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){
2936f8fbdce0SMatthias Ringwald 		handle = little_endian_read_16(packet, 3);
293705ae8de3SMatthias Ringwald 		hci_connection_t * aConn = hci_connection_for_handle(handle);
2938046ec007SMatthias Ringwald 		// discard connection if app did not trigger a reconnect in the event handler
2939797b2a3fSMatthias Ringwald 		if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){
294005ae8de3SMatthias Ringwald 			hci_shutdown_connection(aConn);
2941b0136355SMatthias Ringwald 		}
294286805605S[email protected]     }
294386805605S[email protected] 
294494ab26f8Smatthias.ringwald 	// execute main loop
294594ab26f8Smatthias.ringwald 	hci_run();
294616833f0aSmatthias.ringwald }
294716833f0aSmatthias.ringwald 
294835454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
29496f28d2eeSMatthias Ringwald 
29506be3cf7fSMatthias Ringwald #ifdef ENABLE_SCO_OVER_HCI
29516f28d2eeSMatthias Ringwald static void sco_tx_timeout_handler(btstack_timer_source_t * ts);
29526f28d2eeSMatthias Ringwald static void sco_schedule_tx(hci_connection_t * conn);
29536f28d2eeSMatthias Ringwald 
29546f28d2eeSMatthias Ringwald static void sco_tx_timeout_handler(btstack_timer_source_t * ts){
295559c33575SMatthias Ringwald     log_debug("SCO TX Timeout");
29565a6b2dbdSMatthias Ringwald     hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts);
29576f28d2eeSMatthias Ringwald     hci_connection_t * conn = hci_connection_for_handle(con_handle);
29586f28d2eeSMatthias Ringwald     if (!conn) return;
29596f28d2eeSMatthias Ringwald 
2960afaddd67SMatthias Ringwald     // trigger send
2961afaddd67SMatthias Ringwald     conn->sco_tx_ready = 1;
2962e4157653SMatthias Ringwald     // extra packet if CVSD but SCO buffer is too short
2963a1df452eSMatthias Ringwald     if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){
2964e4157653SMatthias Ringwald         conn->sco_tx_ready++;
2965e4157653SMatthias Ringwald     }
2966afaddd67SMatthias Ringwald     hci_notify_if_sco_can_send_now();
29676f28d2eeSMatthias Ringwald }
29686f28d2eeSMatthias Ringwald 
296959c33575SMatthias Ringwald 
297059c33575SMatthias Ringwald #define SCO_TX_AFTER_RX_MS (6)
297159c33575SMatthias Ringwald 
29726f28d2eeSMatthias Ringwald static void sco_schedule_tx(hci_connection_t * conn){
297359c33575SMatthias Ringwald 
29746f28d2eeSMatthias Ringwald     uint32_t now = btstack_run_loop_get_time_ms();
297559c33575SMatthias Ringwald     uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS;
297659c33575SMatthias Ringwald     int time_delta_ms = sco_tx_ms - now;
297759c33575SMatthias Ringwald 
297859c33575SMatthias Ringwald     btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco;
297959c33575SMatthias Ringwald 
298059c33575SMatthias Ringwald     // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms);
298159c33575SMatthias Ringwald     btstack_run_loop_set_timer(timer, time_delta_ms);
298259c33575SMatthias Ringwald     btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle);
298359c33575SMatthias Ringwald     btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler);
298459c33575SMatthias Ringwald     btstack_run_loop_add_timer(timer);
29856f28d2eeSMatthias Ringwald }
29866be3cf7fSMatthias Ringwald #endif
29876f28d2eeSMatthias Ringwald 
2988c91d150bS[email protected] static void sco_handler(uint8_t * packet, uint16_t size){
29890b3f95dfSMatthias Ringwald     // lookup connection struct
29902b838201SMatthias Ringwald     hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet);
29912b838201SMatthias Ringwald     hci_connection_t * conn     = hci_connection_for_handle(con_handle);
29920b3f95dfSMatthias Ringwald     if (!conn) return;
29930b3f95dfSMatthias Ringwald 
29946be3cf7fSMatthias Ringwald #ifdef ENABLE_SCO_OVER_HCI
2995760b20efSMatthias Ringwald     // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes
2996760b20efSMatthias Ringwald     if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){
2997a1df452eSMatthias Ringwald         if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){
2998760b20efSMatthias Ringwald             packet[2] = 0x3c;
2999760b20efSMatthias Ringwald             memmove(&packet[3], &packet[23], 63);
3000760b20efSMatthias Ringwald             size = 63;
30010b3f95dfSMatthias Ringwald         }
30020b3f95dfSMatthias Ringwald     }
3003760b20efSMatthias Ringwald 
3004f234b250SMatthias Ringwald     if (hci_have_usb_transport()){
3005f234b250SMatthias Ringwald         // Nothing to do
3006f234b250SMatthias Ringwald     } else {
300749205f5dSMatthias Ringwald         // 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);
3008760b20efSMatthias Ringwald         if (hci_stack->synchronous_flow_control_enabled == 0){
30096f28d2eeSMatthias Ringwald             uint32_t now = btstack_run_loop_get_time_ms();
301059c33575SMatthias Ringwald 
301159c33575SMatthias Ringwald             if (!conn->sco_rx_valid){
301259c33575SMatthias Ringwald                 // ignore first 10 packets
30136f28d2eeSMatthias Ringwald                 conn->sco_rx_count++;
301459c33575SMatthias Ringwald                 // log_debug("sco rx count %u", conn->sco_rx_count);
301559c33575SMatthias Ringwald                 if (conn->sco_rx_count == 10) {
301659c33575SMatthias Ringwald                     // use first timestamp as is and pretent it just started
30176f28d2eeSMatthias Ringwald                     conn->sco_rx_ms = now;
30186f28d2eeSMatthias Ringwald                     conn->sco_rx_valid = 1;
301959c33575SMatthias Ringwald                     conn->sco_rx_count = 0;
302059c33575SMatthias Ringwald                     sco_schedule_tx(conn);
302159c33575SMatthias Ringwald                 }
302259c33575SMatthias Ringwald             } else {
302359c33575SMatthias Ringwald                 // track expected arrival timme
302459c33575SMatthias Ringwald                 conn->sco_rx_count++;
302559c33575SMatthias Ringwald                 conn->sco_rx_ms += 7;
302659c33575SMatthias Ringwald                 int delta = (int32_t) (now - conn->sco_rx_ms);
302759c33575SMatthias Ringwald                 if (delta > 0){
302859c33575SMatthias Ringwald                     conn->sco_rx_ms++;
302959c33575SMatthias Ringwald                 }
303059c33575SMatthias Ringwald                 // log_debug("sco rx %u", conn->sco_rx_ms);
30316f28d2eeSMatthias Ringwald                 sco_schedule_tx(conn);
30326f28d2eeSMatthias Ringwald             }
3033760b20efSMatthias Ringwald         }
3034f234b250SMatthias Ringwald     }
30356be3cf7fSMatthias Ringwald #endif
30366be3cf7fSMatthias Ringwald 
30370b3f95dfSMatthias Ringwald     // deliver to app
30380b3f95dfSMatthias Ringwald     if (hci_stack->sco_packet_handler) {
30390b3f95dfSMatthias Ringwald         hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size);
30400b3f95dfSMatthias Ringwald     }
30410b3f95dfSMatthias Ringwald 
3042ed325439SMatthias Ringwald #ifdef HAVE_SCO_TRANSPORT
3043ed325439SMatthias Ringwald     // We can send one packet for each received packet
3044ed325439SMatthias Ringwald     conn->sco_tx_ready++;
3045ed325439SMatthias Ringwald     hci_notify_if_sco_can_send_now();
3046ed325439SMatthias Ringwald #endif
3047ed325439SMatthias Ringwald 
30480b3f95dfSMatthias Ringwald #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL
30492b838201SMatthias Ringwald     conn->num_packets_completed++;
30502b838201SMatthias Ringwald     hci_stack->host_completed_packets = 1;
30512b838201SMatthias Ringwald     hci_run();
30522b838201SMatthias Ringwald #endif
3053c91d150bS[email protected] }
305435454696SMatthias Ringwald #endif
3055c91d150bS[email protected] 
30560a57e69fSmatthias.ringwald static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){
30575bb5bc3eS[email protected]     hci_dump_packet(packet_type, 1, packet, size);
305810e830c9Smatthias.ringwald     switch (packet_type) {
305910e830c9Smatthias.ringwald         case HCI_EVENT_PACKET:
306010e830c9Smatthias.ringwald             event_handler(packet, size);
306110e830c9Smatthias.ringwald             break;
306210e830c9Smatthias.ringwald         case HCI_ACL_DATA_PACKET:
306310e830c9Smatthias.ringwald             acl_handler(packet, size);
306410e830c9Smatthias.ringwald             break;
306535454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
3066c91d150bS[email protected]         case HCI_SCO_DATA_PACKET:
3067c91d150bS[email protected]             sco_handler(packet, size);
3068202c8a4cSMatthias Ringwald             break;
306935454696SMatthias Ringwald #endif
307010e830c9Smatthias.ringwald         default:
307110e830c9Smatthias.ringwald             break;
307210e830c9Smatthias.ringwald     }
307310e830c9Smatthias.ringwald }
307410e830c9Smatthias.ringwald 
3075d6b06661SMatthias Ringwald /**
3076d6b06661SMatthias Ringwald  * @brief Add event packet handler.
3077d6b06661SMatthias Ringwald  */
3078d6b06661SMatthias Ringwald void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){
3079d6b06661SMatthias Ringwald     btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler);
3080d6b06661SMatthias Ringwald }
3081d6b06661SMatthias Ringwald 
3082d6b06661SMatthias Ringwald 
3083fcadd0caSmatthias.ringwald /** Register HCI packet handlers */
30843d50b4baSMatthias Ringwald void hci_register_acl_packet_handler(btstack_packet_handler_t handler){
3085fb37a842SMatthias Ringwald     hci_stack->acl_packet_handler = handler;
308616833f0aSmatthias.ringwald }
308716833f0aSmatthias.ringwald 
308835454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
30898abbe8b5SMatthias Ringwald /**
30908abbe8b5SMatthias Ringwald  * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles.
30918abbe8b5SMatthias Ringwald  */
30923d50b4baSMatthias Ringwald void hci_register_sco_packet_handler(btstack_packet_handler_t handler){
30938abbe8b5SMatthias Ringwald     hci_stack->sco_packet_handler = handler;
30948abbe8b5SMatthias Ringwald }
309535454696SMatthias Ringwald #endif
30968abbe8b5SMatthias Ringwald 
309771de195eSMatthias Ringwald static void hci_state_reset(void){
3098595bdbfbS[email protected]     // no connections yet
3099595bdbfbS[email protected]     hci_stack->connections = NULL;
310074308b23Smatthias.ringwald 
310174308b23Smatthias.ringwald     // keep discoverable/connectable as this has been requested by the client(s)
310274308b23Smatthias.ringwald     // hci_stack->discoverable = 0;
310374308b23Smatthias.ringwald     // hci_stack->connectable = 0;
310474308b23Smatthias.ringwald     // hci_stack->bondable = 1;
3105b95a5a35SMatthias Ringwald     // hci_stack->own_addr_type = 0;
3106595bdbfbS[email protected] 
310744935e40S[email protected]     // buffer is free
310844935e40S[email protected]     hci_stack->hci_packet_buffer_reserved = 0;
310944935e40S[email protected] 
3110595bdbfbS[email protected]     // no pending cmds
3111595bdbfbS[email protected]     hci_stack->decline_reason = 0;
3112595bdbfbS[email protected]     hci_stack->new_scan_enable_value = 0xff;
3113595bdbfbS[email protected] 
3114c214d65bSMatthias Ringwald     hci_stack->secure_connections_active = false;
3115c214d65bSMatthias Ringwald 
3116bea424a5SMatthias Ringwald     #ifdef ENABLE_CLASSIC
3117bea424a5SMatthias Ringwald     hci_stack->new_page_scan_interval = 0xffff;
3118bea424a5SMatthias Ringwald     hci_stack->new_page_scan_window = 0xffff;
3119bea424a5SMatthias Ringwald     hci_stack->new_page_scan_type = 0xff;
3120bea424a5SMatthias Ringwald #endif
3121bea424a5SMatthias Ringwald 
3122cf01e888SMatthias Ringwald #ifdef ENABLE_CLASSIC_PAIRING_OOB
3123cf01e888SMatthias Ringwald     hci_stack->classic_read_local_oob_data = true;
3124cf01e888SMatthias Ringwald #endif
3125cf01e888SMatthias Ringwald 
3126595bdbfbS[email protected]     // LE
3127b95a5a35SMatthias Ringwald #ifdef ENABLE_BLE
3128b95a5a35SMatthias Ringwald     memset(hci_stack->le_random_address, 0, 6);
3129b95a5a35SMatthias Ringwald     hci_stack->le_random_address_set = 0;
3130d70217a2SMatthias Ringwald #endif
3131d70217a2SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
31326fab74dbSMatthias Ringwald     hci_stack->le_scanning_active  = 0;
3133b04dfa37SMatthias Ringwald     hci_stack->le_connecting_state = LE_CONNECTING_IDLE;
3134d5b1a89eSMatthias Ringwald     hci_stack->le_connecting_request = LE_CONNECTING_IDLE;
3135e83201bcSMatthias Ringwald     hci_stack->le_whitelist_capacity = 0;
3136d70217a2SMatthias Ringwald #endif
3137595bdbfbS[email protected] }
3138595bdbfbS[email protected] 
313935454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
31402d5e09d6SMatthias Ringwald /**
31412d5e09d6SMatthias Ringwald  * @brief Configure Bluetooth hardware control. Has to be called before power on.
31422d5e09d6SMatthias Ringwald  */
31432d5e09d6SMatthias Ringwald void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){
31442d5e09d6SMatthias Ringwald     // store and open remote device db
31452d5e09d6SMatthias Ringwald     hci_stack->link_key_db = link_key_db;
31462d5e09d6SMatthias Ringwald     if (hci_stack->link_key_db) {
31472d5e09d6SMatthias Ringwald         hci_stack->link_key_db->open();
31482d5e09d6SMatthias Ringwald     }
31492d5e09d6SMatthias Ringwald }
315035454696SMatthias Ringwald #endif
31512d5e09d6SMatthias Ringwald 
31522d5e09d6SMatthias Ringwald void hci_init(const hci_transport_t *transport, const void *config){
3153475c8125Smatthias.ringwald 
31543a9fb326S[email protected] #ifdef HAVE_MALLOC
31553a9fb326S[email protected]     if (!hci_stack) {
31563a9fb326S[email protected]         hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t));
31573a9fb326S[email protected]     }
31583a9fb326S[email protected] #else
31593a9fb326S[email protected]     hci_stack = &hci_stack_static;
31603a9fb326S[email protected] #endif
316166fb9560S[email protected]     memset(hci_stack, 0, sizeof(hci_stack_t));
31623a9fb326S[email protected] 
3163475c8125Smatthias.ringwald     // reference to use transport layer implementation
31643a9fb326S[email protected]     hci_stack->hci_transport = transport;
3165475c8125Smatthias.ringwald 
316611e23e5fSmatthias.ringwald     // reference to used config
31673a9fb326S[email protected]     hci_stack->config = config;
316811e23e5fSmatthias.ringwald 
316926a9b6daSMatthias Ringwald     // setup pointer for outgoing packet buffer
317026a9b6daSMatthias Ringwald     hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE];
317126a9b6daSMatthias Ringwald 
31728fcba05dSmatthias.ringwald     // max acl payload size defined in config.h
31733a9fb326S[email protected]     hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE;
31748fcba05dSmatthias.ringwald 
317516833f0aSmatthias.ringwald     // register packet handlers with transport
317610e830c9Smatthias.ringwald     transport->register_packet_handler(&packet_handler);
3177f5454fc6Smatthias.ringwald 
31783a9fb326S[email protected]     hci_stack->state = HCI_STATE_OFF;
3179e2386ba1S[email protected] 
3180e2386ba1S[email protected]     // class of device
31813a9fb326S[email protected]     hci_stack->class_of_device = 0x007a020c; // Smartphone
3182a45d6b9fS[email protected] 
3183f20168b8Smatthias.ringwald     // bondable by default
3184f20168b8Smatthias.ringwald     hci_stack->bondable = 1;
3185f20168b8Smatthias.ringwald 
3186e9f343c8SMatthias Ringwald #ifdef ENABLE_CLASSIC
318763168530SMatthias Ringwald     // classic name
318863168530SMatthias Ringwald     hci_stack->local_name = default_classic_name;
3189c4c88f1bSJakob Krantz 
3190c4c88f1bSJakob Krantz     // Master slave policy
3191c4c88f1bSJakob Krantz     hci_stack->master_slave_policy = 1;
3192170fafaeSMatthias Ringwald 
3193b4eb4420SMatthias Ringwald     // Allow Role Switch
3194b4eb4420SMatthias Ringwald     hci_stack->allow_role_switch = 1;
3195b4eb4420SMatthias Ringwald 
319678315a58SMatthias Ringwald     // Default / minimum security level = 2
319778315a58SMatthias Ringwald     hci_stack->gap_security_level = LEVEL_2;
319878315a58SMatthias Ringwald 
3199cd345294SMatthias Ringwald     // Errata-11838 mandates 7 bytes for GAP Security Level 1-3
3200cd345294SMatthias Ringwald     hci_stack->gap_required_encyrption_key_size = 7;
3201e9f343c8SMatthias Ringwald #endif
320263168530SMatthias Ringwald 
320363048403S[email protected]     // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept
32043a9fb326S[email protected]     hci_stack->ssp_enable = 1;
32053a9fb326S[email protected]     hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT;
32063a9fb326S[email protected]     hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING;
32073a9fb326S[email protected]     hci_stack->ssp_auto_accept = 1;
320869a97523S[email protected] 
32095d23aae8SMatthias Ringwald     // Secure Connections: enable (requires support from Controller)
32105d23aae8SMatthias Ringwald     hci_stack->secure_connections_enable = true;
32115d23aae8SMatthias Ringwald 
3212fac2e2feSMatthias Ringwald     // voice setting - signed 16 bit pcm data with CVSD over the air
3213fac2e2feSMatthias Ringwald     hci_stack->sco_voice_setting = 0x60;
3214d950d659SMatthias Ringwald 
3215831711daSMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
3216831711daSMatthias Ringwald     // connection parameter to use for outgoing connections
3217cbe54ab2SJakob Krantz     hci_stack->le_connection_scan_interval = 0x0060;   // 60ms
3218cbe54ab2SJakob Krantz     hci_stack->le_connection_scan_window  = 0x0030;    // 30ms
3219831711daSMatthias Ringwald     hci_stack->le_connection_interval_min = 0x0008;    // 10 ms
3220831711daSMatthias Ringwald     hci_stack->le_connection_interval_max = 0x0018;    // 30 ms
3221831711daSMatthias Ringwald     hci_stack->le_connection_latency      = 4;         // 4
3222831711daSMatthias Ringwald     hci_stack->le_supervision_timeout     = 0x0048;    // 720 ms
3223831711daSMatthias Ringwald     hci_stack->le_minimum_ce_length       = 2;         // 1.25 ms
3224831711daSMatthias Ringwald     hci_stack->le_maximum_ce_length       = 0x0030;    // 30 ms
32257261e5d8SMatthias Ringwald 
32267261e5d8SMatthias Ringwald     // default LE Scanning
32278b69e4c7SMatthias Ringwald     hci_stack->le_scan_type     =   0x1; // active
32288b69e4c7SMatthias Ringwald     hci_stack->le_scan_interval = 0x1e0; // 300 ms
32298b69e4c7SMatthias Ringwald     hci_stack->le_scan_window   =  0x30; //  30 ms
3230831711daSMatthias Ringwald #endif
3231831711daSMatthias Ringwald 
32322b6ab3e6SMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
32332b6ab3e6SMatthias Ringwald     hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral
32342b6ab3e6SMatthias Ringwald #endif
32352b6ab3e6SMatthias Ringwald 
3236831711daSMatthias Ringwald     // connection parameter range used to answer connection parameter update requests in l2cap
3237831711daSMatthias Ringwald     hci_stack->le_connection_parameter_range.le_conn_interval_min =          6;
3238831711daSMatthias Ringwald     hci_stack->le_connection_parameter_range.le_conn_interval_max =       3200;
3239831711daSMatthias Ringwald     hci_stack->le_connection_parameter_range.le_conn_latency_min =           0;
3240831711daSMatthias Ringwald     hci_stack->le_connection_parameter_range.le_conn_latency_max =         500;
3241831711daSMatthias Ringwald     hci_stack->le_connection_parameter_range.le_supervision_timeout_min =   10;
3242831711daSMatthias Ringwald     hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200;
3243831711daSMatthias Ringwald 
3244595bdbfbS[email protected]     hci_state_reset();
3245475c8125Smatthias.ringwald }
3246475c8125Smatthias.ringwald 
32474688f216SMatthias Ringwald void hci_deinit(void){
32484688f216SMatthias Ringwald #ifdef HAVE_MALLOC
32494688f216SMatthias Ringwald     if (hci_stack) {
32504688f216SMatthias Ringwald         free(hci_stack);
32514688f216SMatthias Ringwald     }
32524688f216SMatthias Ringwald #endif
32534688f216SMatthias Ringwald     hci_stack = NULL;
3254b5bbcbf4SMatthias Ringwald 
3255b5bbcbf4SMatthias Ringwald #ifdef ENABLE_CLASSIC
32564688f216SMatthias Ringwald     disable_l2cap_timeouts = 0;
3257b5bbcbf4SMatthias Ringwald #endif
32584688f216SMatthias Ringwald }
32594688f216SMatthias Ringwald 
32603fb36a29SMatthias Ringwald /**
32613fb36a29SMatthias Ringwald  * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information
32623fb36a29SMatthias Ringwald  */
32633fb36a29SMatthias Ringwald void hci_set_chipset(const btstack_chipset_t *chipset_driver){
32643fb36a29SMatthias Ringwald     hci_stack->chipset = chipset_driver;
32653fb36a29SMatthias Ringwald 
32663fb36a29SMatthias Ringwald     // reset chipset driver - init is also called on power_up
32673fb36a29SMatthias Ringwald     if (hci_stack->chipset && hci_stack->chipset->init){
32683fb36a29SMatthias Ringwald         hci_stack->chipset->init(hci_stack->config);
32693fb36a29SMatthias Ringwald     }
32703fb36a29SMatthias Ringwald }
32713fb36a29SMatthias Ringwald 
3272fb55bd0aSMatthias Ringwald /**
3273d0b87befSMatthias Ringwald  * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on.
3274fb55bd0aSMatthias Ringwald  */
3275fb55bd0aSMatthias Ringwald void hci_set_control(const btstack_control_t *hardware_control){
3276fb55bd0aSMatthias Ringwald     // references to used control implementation
3277fb55bd0aSMatthias Ringwald     hci_stack->control = hardware_control;
3278d0b87befSMatthias Ringwald     // init with transport config
3279d0b87befSMatthias Ringwald     hardware_control->init(hci_stack->config);
3280fb55bd0aSMatthias Ringwald }
3281fb55bd0aSMatthias Ringwald 
328271de195eSMatthias Ringwald void hci_close(void){
3283404843c1Smatthias.ringwald     // close remote device db
3284a98592bcSMatthias Ringwald     if (hci_stack->link_key_db) {
3285a98592bcSMatthias Ringwald         hci_stack->link_key_db->close();
3286404843c1Smatthias.ringwald     }
32877224be7eSMatthias Ringwald 
32887224be7eSMatthias Ringwald     btstack_linked_list_iterator_t lit;
32897224be7eSMatthias Ringwald     btstack_linked_list_iterator_init(&lit, &hci_stack->connections);
32907224be7eSMatthias Ringwald     while (btstack_linked_list_iterator_has_next(&lit)){
32917224be7eSMatthias Ringwald         // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection
32927224be7eSMatthias Ringwald         hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&lit);
32937224be7eSMatthias Ringwald         hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host
32947224be7eSMatthias Ringwald         hci_shutdown_connection(connection);
3295f5454fc6Smatthias.ringwald     }
32967224be7eSMatthias Ringwald 
3297f5454fc6Smatthias.ringwald     hci_power_control(HCI_POWER_OFF);
32983a9fb326S[email protected] 
32993a9fb326S[email protected] #ifdef HAVE_MALLOC
33003a9fb326S[email protected]     free(hci_stack);
33013a9fb326S[email protected] #endif
33023a9fb326S[email protected]     hci_stack = NULL;
3303404843c1Smatthias.ringwald }
3304404843c1Smatthias.ringwald 
3305cb70c5abSMatthias Ringwald #ifdef HAVE_SCO_TRANSPORT
3306cb70c5abSMatthias Ringwald void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){
3307cb70c5abSMatthias Ringwald     hci_stack->sco_transport = sco_transport;
3308cb70c5abSMatthias Ringwald     sco_transport->register_packet_handler(&packet_handler);
3309cb70c5abSMatthias Ringwald }
3310cb70c5abSMatthias Ringwald #endif
3311cb70c5abSMatthias Ringwald 
331235454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
3313170fafaeSMatthias Ringwald void gap_set_required_encryption_key_size(uint8_t encryption_key_size){
3314170fafaeSMatthias Ringwald     // validate ranage and set
3315170fafaeSMatthias Ringwald     if (encryption_key_size < 7)  return;
3316170fafaeSMatthias Ringwald     if (encryption_key_size > 16) return;
3317170fafaeSMatthias Ringwald     hci_stack->gap_required_encyrption_key_size = encryption_key_size;
3318170fafaeSMatthias Ringwald }
331978315a58SMatthias Ringwald 
332078315a58SMatthias Ringwald void gap_set_security_level(gap_security_level_t security_level){
332178315a58SMatthias Ringwald     hci_stack->gap_security_level = security_level;
332278315a58SMatthias Ringwald }
332378315a58SMatthias Ringwald 
332478315a58SMatthias Ringwald gap_security_level_t gap_get_security_level(void){
332578315a58SMatthias Ringwald     return hci_stack->gap_security_level;
332678315a58SMatthias Ringwald }
3327170fafaeSMatthias Ringwald #endif
3328170fafaeSMatthias Ringwald 
3329170fafaeSMatthias Ringwald #ifdef ENABLE_CLASSIC
333060b9e82fSMatthias Ringwald void gap_set_class_of_device(uint32_t class_of_device){
33319e61646fS[email protected]     hci_stack->class_of_device = class_of_device;
33329e61646fS[email protected] }
333376f27cffSMatthias Ringwald 
3334c33e56d3SMatthias Ringwald void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){
3335c33e56d3SMatthias Ringwald     hci_stack->default_link_policy_settings = default_link_policy_settings;
3336c33e56d3SMatthias Ringwald }
3337c33e56d3SMatthias Ringwald 
3338b4eb4420SMatthias Ringwald void gap_set_allow_role_switch(bool allow_role_switch){
3339b4eb4420SMatthias Ringwald     hci_stack->allow_role_switch = allow_role_switch ? 1 : 0;
3340b4eb4420SMatthias Ringwald }
3341b4eb4420SMatthias Ringwald 
3342b4eb4420SMatthias Ringwald uint8_t hci_get_allow_role_switch(void){
3343b4eb4420SMatthias Ringwald     return  hci_stack->allow_role_switch;
3344b4eb4420SMatthias Ringwald }
3345b4eb4420SMatthias Ringwald 
33460c3eb48dSMatthias Ringwald void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){
33470c3eb48dSMatthias Ringwald     hci_stack->link_supervision_timeout = link_supervision_timeout;
33480c3eb48dSMatthias Ringwald }
33490c3eb48dSMatthias Ringwald 
335076f27cffSMatthias Ringwald void hci_disable_l2cap_timeout_check(void){
335176f27cffSMatthias Ringwald     disable_l2cap_timeouts = 1;
335276f27cffSMatthias Ringwald }
335335454696SMatthias Ringwald #endif
33549e61646fS[email protected] 
335576f27cffSMatthias Ringwald #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API)
3356f456b2d0S[email protected] // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h
3357f456b2d0S[email protected] void hci_set_bd_addr(bd_addr_t addr){
33586535961aSMatthias Ringwald     (void)memcpy(hci_stack->custom_bd_addr, addr, 6);
3359f456b2d0S[email protected]     hci_stack->custom_bd_addr_set = 1;
3360f456b2d0S[email protected] }
336176f27cffSMatthias Ringwald #endif
3362f456b2d0S[email protected] 
33638d213e1aSmatthias.ringwald // State-Module-Driver overview
33648d213e1aSmatthias.ringwald // state                    module  low-level
33658d213e1aSmatthias.ringwald // HCI_STATE_OFF             off      close
33668d213e1aSmatthias.ringwald // HCI_STATE_INITIALIZING,   on       open
33678d213e1aSmatthias.ringwald // HCI_STATE_WORKING,        on       open
33688d213e1aSmatthias.ringwald // HCI_STATE_HALTING,        on       open
3369d661ed19Smatthias.ringwald // HCI_STATE_SLEEPING,    off/sleep   close
3370d661ed19Smatthias.ringwald // HCI_STATE_FALLING_ASLEEP  on       open
3371c7e0c5f6Smatthias.ringwald 
337240d1c7a4Smatthias.ringwald static int hci_power_control_on(void){
33737301ad89Smatthias.ringwald 
3374038bc64cSmatthias.ringwald     // power on
3375f9a30166Smatthias.ringwald     int err = 0;
33763a9fb326S[email protected]     if (hci_stack->control && hci_stack->control->on){
3377d0b87befSMatthias Ringwald         err = (*hci_stack->control->on)();
3378f9a30166Smatthias.ringwald     }
3379038bc64cSmatthias.ringwald     if (err){
33809da54300S[email protected]         log_error( "POWER_ON failed");
3381038bc64cSmatthias.ringwald         hci_emit_hci_open_failed();
3382038bc64cSmatthias.ringwald         return err;
3383038bc64cSmatthias.ringwald     }
3384038bc64cSmatthias.ringwald 
338524b3c629SMatthias Ringwald     // int chipset driver
33863fb36a29SMatthias Ringwald     if (hci_stack->chipset && hci_stack->chipset->init){
33873fb36a29SMatthias Ringwald         hci_stack->chipset->init(hci_stack->config);
33883fb36a29SMatthias Ringwald     }
33893fb36a29SMatthias Ringwald 
339024b3c629SMatthias Ringwald     // init transport
339124b3c629SMatthias Ringwald     if (hci_stack->hci_transport->init){
339224b3c629SMatthias Ringwald         hci_stack->hci_transport->init(hci_stack->config);
339324b3c629SMatthias Ringwald     }
339424b3c629SMatthias Ringwald 
339524b3c629SMatthias Ringwald     // open transport
339624b3c629SMatthias Ringwald     err = hci_stack->hci_transport->open();
3397038bc64cSmatthias.ringwald     if (err){
33989da54300S[email protected]         log_error( "HCI_INIT failed, turning Bluetooth off again");
33993a9fb326S[email protected]         if (hci_stack->control && hci_stack->control->off){
3400d0b87befSMatthias Ringwald             (*hci_stack->control->off)();
3401f9a30166Smatthias.ringwald         }
3402038bc64cSmatthias.ringwald         hci_emit_hci_open_failed();
3403038bc64cSmatthias.ringwald         return err;
3404038bc64cSmatthias.ringwald     }
34058d213e1aSmatthias.ringwald     return 0;
34068d213e1aSmatthias.ringwald }
3407038bc64cSmatthias.ringwald 
340840d1c7a4Smatthias.ringwald static void hci_power_control_off(void){
34098d213e1aSmatthias.ringwald 
34109da54300S[email protected]     log_info("hci_power_control_off");
34119418f9c9Smatthias.ringwald 
34128d213e1aSmatthias.ringwald     // close low-level device
341324b3c629SMatthias Ringwald     hci_stack->hci_transport->close();
34148d213e1aSmatthias.ringwald 
34159da54300S[email protected]     log_info("hci_power_control_off - hci_transport closed");
34169418f9c9Smatthias.ringwald 
34178d213e1aSmatthias.ringwald     // power off
34183a9fb326S[email protected]     if (hci_stack->control && hci_stack->control->off){
3419d0b87befSMatthias Ringwald         (*hci_stack->control->off)();
34208d213e1aSmatthias.ringwald     }
34219418f9c9Smatthias.ringwald 
34229da54300S[email protected]     log_info("hci_power_control_off - control closed");
34239418f9c9Smatthias.ringwald 
34243a9fb326S[email protected]     hci_stack->state = HCI_STATE_OFF;
342572ea5239Smatthias.ringwald }
342672ea5239Smatthias.ringwald 
342740d1c7a4Smatthias.ringwald static void hci_power_control_sleep(void){
342872ea5239Smatthias.ringwald 
34299da54300S[email protected]     log_info("hci_power_control_sleep");
34303144bce4Smatthias.ringwald 
3431b429b9b7Smatthias.ringwald #if 0
3432b429b9b7Smatthias.ringwald     // don't close serial port during sleep
3433b429b9b7Smatthias.ringwald 
343472ea5239Smatthias.ringwald     // close low-level device
34353a9fb326S[email protected]     hci_stack->hci_transport->close(hci_stack->config);
3436b429b9b7Smatthias.ringwald #endif
343772ea5239Smatthias.ringwald 
343872ea5239Smatthias.ringwald     // sleep mode
34393a9fb326S[email protected]     if (hci_stack->control && hci_stack->control->sleep){
3440d0b87befSMatthias Ringwald         (*hci_stack->control->sleep)();
344172ea5239Smatthias.ringwald     }
3442b429b9b7Smatthias.ringwald 
34433a9fb326S[email protected]     hci_stack->state = HCI_STATE_SLEEPING;
34448d213e1aSmatthias.ringwald }
34458d213e1aSmatthias.ringwald 
344640d1c7a4Smatthias.ringwald static int hci_power_control_wake(void){
3447b429b9b7Smatthias.ringwald 
34489da54300S[email protected]     log_info("hci_power_control_wake");
3449b429b9b7Smatthias.ringwald 
3450b429b9b7Smatthias.ringwald     // wake on
34513a9fb326S[email protected]     if (hci_stack->control && hci_stack->control->wake){
3452d0b87befSMatthias Ringwald         (*hci_stack->control->wake)();
3453b429b9b7Smatthias.ringwald     }
3454b429b9b7Smatthias.ringwald 
3455b429b9b7Smatthias.ringwald #if 0
3456b429b9b7Smatthias.ringwald     // open low-level device
34573a9fb326S[email protected]     int err = hci_stack->hci_transport->open(hci_stack->config);
3458b429b9b7Smatthias.ringwald     if (err){
34599da54300S[email protected]         log_error( "HCI_INIT failed, turning Bluetooth off again");
34603a9fb326S[email protected]         if (hci_stack->control && hci_stack->control->off){
3461d0b87befSMatthias Ringwald             (*hci_stack->control->off)();
3462b429b9b7Smatthias.ringwald         }
3463b429b9b7Smatthias.ringwald         hci_emit_hci_open_failed();
3464b429b9b7Smatthias.ringwald         return err;
3465b429b9b7Smatthias.ringwald     }
3466b429b9b7Smatthias.ringwald #endif
3467b429b9b7Smatthias.ringwald 
3468b429b9b7Smatthias.ringwald     return 0;
3469b429b9b7Smatthias.ringwald }
3470b429b9b7Smatthias.ringwald 
347144935e40S[email protected] static void hci_power_transition_to_initializing(void){
347244935e40S[email protected]     // set up state machine
347344935e40S[email protected]     hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent
347444935e40S[email protected]     hci_stack->hci_packet_buffer_reserved = 0;
347544935e40S[email protected]     hci_stack->state = HCI_STATE_INITIALIZING;
34765c363727SMatthias Ringwald     hci_stack->substate = HCI_INIT_SEND_RESET;
347744935e40S[email protected] }
3478b429b9b7Smatthias.ringwald 
347942bd3d77SMatthias Ringwald // returns error
348042bd3d77SMatthias Ringwald static int hci_power_control_state_off(HCI_POWER_MODE power_mode){
348142bd3d77SMatthias Ringwald     int err;
34828d213e1aSmatthias.ringwald     switch (power_mode){
34838d213e1aSmatthias.ringwald         case HCI_POWER_ON:
34848d213e1aSmatthias.ringwald             err = hci_power_control_on();
348542bd3d77SMatthias Ringwald             if (err != 0) {
3486f04a0c31SMatthias Ringwald                 log_error("hci_power_control_on() error %d", err);
348797b61c7bS[email protected]                 return err;
348897b61c7bS[email protected]             }
348944935e40S[email protected]             hci_power_transition_to_initializing();
34908d213e1aSmatthias.ringwald             break;
34918d213e1aSmatthias.ringwald         case HCI_POWER_OFF:
34928d213e1aSmatthias.ringwald             // do nothing
34938d213e1aSmatthias.ringwald             break;
34948d213e1aSmatthias.ringwald         case HCI_POWER_SLEEP:
3495b546ac54Smatthias.ringwald             // do nothing (with SLEEP == OFF)
34968d213e1aSmatthias.ringwald             break;
34977bbeb3adSMilanka Ringwald         default:
34987bbeb3adSMilanka Ringwald             btstack_assert(false);
34997bbeb3adSMilanka Ringwald             break;
35008d213e1aSmatthias.ringwald     }
350142bd3d77SMatthias Ringwald     return ERROR_CODE_SUCCESS;
350242bd3d77SMatthias Ringwald }
35037301ad89Smatthias.ringwald 
350442bd3d77SMatthias Ringwald static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){
35058d213e1aSmatthias.ringwald     switch (power_mode){
35068d213e1aSmatthias.ringwald         case HCI_POWER_ON:
35078d213e1aSmatthias.ringwald             // do nothing
35088d213e1aSmatthias.ringwald             break;
35098d213e1aSmatthias.ringwald         case HCI_POWER_OFF:
35108d213e1aSmatthias.ringwald             // no connections yet, just turn it off
35118d213e1aSmatthias.ringwald             hci_power_control_off();
35128d213e1aSmatthias.ringwald             break;
35138d213e1aSmatthias.ringwald         case HCI_POWER_SLEEP:
3514b546ac54Smatthias.ringwald             // no connections yet, just turn it off
351572ea5239Smatthias.ringwald             hci_power_control_sleep();
35168d213e1aSmatthias.ringwald             break;
35177bbeb3adSMilanka Ringwald         default:
35187bbeb3adSMilanka Ringwald             btstack_assert(false);
35197bbeb3adSMilanka Ringwald             break;
35208d213e1aSmatthias.ringwald     }
352142bd3d77SMatthias Ringwald     return ERROR_CODE_SUCCESS;
352242bd3d77SMatthias Ringwald }
35237301ad89Smatthias.ringwald 
352442bd3d77SMatthias Ringwald static int hci_power_control_state_working(HCI_POWER_MODE power_mode) {
35258d213e1aSmatthias.ringwald     switch (power_mode){
35268d213e1aSmatthias.ringwald         case HCI_POWER_ON:
35278d213e1aSmatthias.ringwald             // do nothing
35288d213e1aSmatthias.ringwald             break;
35298d213e1aSmatthias.ringwald         case HCI_POWER_OFF:
3530c7e0c5f6Smatthias.ringwald             // see hci_run
35313a9fb326S[email protected]             hci_stack->state = HCI_STATE_HALTING;
3532beceeddeSMatthias Ringwald             hci_stack->substate = HCI_HALTING_DISCONNECT_ALL_NO_TIMER;
35338d213e1aSmatthias.ringwald             break;
35348d213e1aSmatthias.ringwald         case HCI_POWER_SLEEP:
3535b546ac54Smatthias.ringwald             // see hci_run
35363a9fb326S[email protected]             hci_stack->state = HCI_STATE_FALLING_ASLEEP;
353774b323a9SMatthias Ringwald             hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT;
35388d213e1aSmatthias.ringwald             break;
35397bbeb3adSMilanka Ringwald         default:
35407bbeb3adSMilanka Ringwald             btstack_assert(false);
35417bbeb3adSMilanka Ringwald             break;
35428d213e1aSmatthias.ringwald     }
354342bd3d77SMatthias Ringwald     return ERROR_CODE_SUCCESS;
354442bd3d77SMatthias Ringwald }
35457301ad89Smatthias.ringwald 
354642bd3d77SMatthias Ringwald static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) {
35478d213e1aSmatthias.ringwald     switch (power_mode){
35488d213e1aSmatthias.ringwald         case HCI_POWER_ON:
354944935e40S[email protected]             hci_power_transition_to_initializing();
35508d213e1aSmatthias.ringwald             break;
35518d213e1aSmatthias.ringwald         case HCI_POWER_OFF:
35528d213e1aSmatthias.ringwald             // do nothing
35538d213e1aSmatthias.ringwald             break;
35548d213e1aSmatthias.ringwald         case HCI_POWER_SLEEP:
3555b546ac54Smatthias.ringwald             // see hci_run
35563a9fb326S[email protected]             hci_stack->state = HCI_STATE_FALLING_ASLEEP;
355774b323a9SMatthias Ringwald             hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT;
35588d213e1aSmatthias.ringwald             break;
35597bbeb3adSMilanka Ringwald         default:
35607bbeb3adSMilanka Ringwald             btstack_assert(false);
35617bbeb3adSMilanka Ringwald             break;
35628d213e1aSmatthias.ringwald     }
356300278272SMatthias Ringwald     return ERROR_CODE_SUCCESS;
356442bd3d77SMatthias Ringwald }
35658d213e1aSmatthias.ringwald 
356642bd3d77SMatthias Ringwald static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) {
35678d213e1aSmatthias.ringwald     switch (power_mode){
35688d213e1aSmatthias.ringwald         case HCI_POWER_ON:
356928171530Smatthias.ringwald 
3570423a3e49SMatthias Ringwald #ifdef HAVE_PLATFORM_IPHONE_OS
357128171530Smatthias.ringwald             // nothing to do, if H4 supports power management
3572d0b87befSMatthias Ringwald                     if (btstack_control_iphone_power_management_enabled()){
35733a9fb326S[email protected]                         hci_stack->state = HCI_STATE_INITIALIZING;
357474b323a9SMatthias Ringwald                         hci_stack->substate = HCI_INIT_WRITE_SCAN_ENABLE;   // init after sleep
357528171530Smatthias.ringwald                         break;
357628171530Smatthias.ringwald                     }
357728171530Smatthias.ringwald #endif
357844935e40S[email protected]             hci_power_transition_to_initializing();
35798d213e1aSmatthias.ringwald             break;
35808d213e1aSmatthias.ringwald         case HCI_POWER_OFF:
3581b546ac54Smatthias.ringwald             // see hci_run
35823a9fb326S[email protected]             hci_stack->state = HCI_STATE_HALTING;
3583beceeddeSMatthias Ringwald             hci_stack->substate = HCI_HALTING_DISCONNECT_ALL_NO_TIMER;
35848d213e1aSmatthias.ringwald             break;
35858d213e1aSmatthias.ringwald         case HCI_POWER_SLEEP:
3586b546ac54Smatthias.ringwald             // do nothing
35878d213e1aSmatthias.ringwald             break;
35887bbeb3adSMilanka Ringwald         default:
35897bbeb3adSMilanka Ringwald             btstack_assert(false);
35907bbeb3adSMilanka Ringwald             break;
35918d213e1aSmatthias.ringwald     }
359242bd3d77SMatthias Ringwald     return ERROR_CODE_SUCCESS;
359342bd3d77SMatthias Ringwald }
35948d213e1aSmatthias.ringwald 
359542bd3d77SMatthias Ringwald static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) {
359642bd3d77SMatthias Ringwald     int err;
35978d213e1aSmatthias.ringwald     switch (power_mode){
35988d213e1aSmatthias.ringwald         case HCI_POWER_ON:
3599423a3e49SMatthias Ringwald #ifdef HAVE_PLATFORM_IPHONE_OS
360028171530Smatthias.ringwald             // nothing to do, if H4 supports power management
3601d0b87befSMatthias Ringwald                     if (btstack_control_iphone_power_management_enabled()){
36023a9fb326S[email protected]                         hci_stack->state = HCI_STATE_INITIALIZING;
36035c363727SMatthias Ringwald                         hci_stack->substate = HCI_INIT_AFTER_SLEEP;
3604758b46ceSmatthias.ringwald                         hci_update_scan_enable();
360528171530Smatthias.ringwald                         break;
360628171530Smatthias.ringwald                     }
360728171530Smatthias.ringwald #endif
36083144bce4Smatthias.ringwald             err = hci_power_control_wake();
36093144bce4Smatthias.ringwald             if (err) return err;
361044935e40S[email protected]             hci_power_transition_to_initializing();
36118d213e1aSmatthias.ringwald             break;
36128d213e1aSmatthias.ringwald         case HCI_POWER_OFF:
36133a9fb326S[email protected]             hci_stack->state = HCI_STATE_HALTING;
3614beceeddeSMatthias Ringwald             hci_stack->substate = HCI_HALTING_DISCONNECT_ALL_NO_TIMER;
36158d213e1aSmatthias.ringwald             break;
36168d213e1aSmatthias.ringwald         case HCI_POWER_SLEEP:
3617b546ac54Smatthias.ringwald             // do nothing
36188d213e1aSmatthias.ringwald             break;
36197bbeb3adSMilanka Ringwald         default:
36207bbeb3adSMilanka Ringwald             btstack_assert(false);
36217bbeb3adSMilanka Ringwald             break;
36228d213e1aSmatthias.ringwald     }
362342bd3d77SMatthias Ringwald     return ERROR_CODE_SUCCESS;
362442bd3d77SMatthias Ringwald }
36257bbeb3adSMilanka Ringwald 
362642bd3d77SMatthias Ringwald int hci_power_control(HCI_POWER_MODE power_mode){
362742bd3d77SMatthias Ringwald     log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state);
362824f87726SMatthias Ringwald     int err = 0;
362942bd3d77SMatthias Ringwald     switch (hci_stack->state){
363042bd3d77SMatthias Ringwald         case HCI_STATE_OFF:
363142bd3d77SMatthias Ringwald             err = hci_power_control_state_off(power_mode);
363242bd3d77SMatthias Ringwald             break;
363342bd3d77SMatthias Ringwald         case HCI_STATE_INITIALIZING:
363442bd3d77SMatthias Ringwald             err = hci_power_control_state_initializing(power_mode);
363542bd3d77SMatthias Ringwald             break;
363642bd3d77SMatthias Ringwald         case HCI_STATE_WORKING:
363742bd3d77SMatthias Ringwald             err = hci_power_control_state_working(power_mode);
363842bd3d77SMatthias Ringwald             break;
363942bd3d77SMatthias Ringwald         case HCI_STATE_HALTING:
364042bd3d77SMatthias Ringwald             err = hci_power_control_state_halting(power_mode);
364142bd3d77SMatthias Ringwald             break;
364242bd3d77SMatthias Ringwald         case HCI_STATE_FALLING_ASLEEP:
364342bd3d77SMatthias Ringwald             err = hci_power_control_state_falling_asleep(power_mode);
364442bd3d77SMatthias Ringwald             break;
364542bd3d77SMatthias Ringwald         case HCI_STATE_SLEEPING:
364642bd3d77SMatthias Ringwald             err = hci_power_control_state_sleeping(power_mode);
364742bd3d77SMatthias Ringwald             break;
36487bbeb3adSMilanka Ringwald         default:
36497bbeb3adSMilanka Ringwald             btstack_assert(false);
36507bbeb3adSMilanka Ringwald             break;
365111e23e5fSmatthias.ringwald     }
365224f87726SMatthias Ringwald     if (err != 0){
365342bd3d77SMatthias Ringwald         return err;
365442bd3d77SMatthias Ringwald     }
365568d92d03Smatthias.ringwald 
3656038bc64cSmatthias.ringwald     // create internal event
3657ee8bf225Smatthias.ringwald 	hci_emit_state();
3658ee8bf225Smatthias.ringwald 
365968d92d03Smatthias.ringwald 	// trigger next/first action
366068d92d03Smatthias.ringwald 	hci_run();
366168d92d03Smatthias.ringwald 
3662475c8125Smatthias.ringwald     return 0;
3663475c8125Smatthias.ringwald }
3664475c8125Smatthias.ringwald 
366535454696SMatthias Ringwald 
366635454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
366735454696SMatthias Ringwald 
3668758b46ceSmatthias.ringwald static void hci_update_scan_enable(void){
3669758b46ceSmatthias.ringwald     // 2 = page scan, 1 = inq scan
3670a1df452eSMatthias Ringwald     hci_stack->new_scan_enable_value  = (hci_stack->connectable << 1) | hci_stack->discoverable;
3671758b46ceSmatthias.ringwald     hci_run();
3672758b46ceSmatthias.ringwald }
3673758b46ceSmatthias.ringwald 
367415a95bd5SMatthias Ringwald void gap_discoverable_control(uint8_t enable){
3675381fbed8Smatthias.ringwald     if (enable) enable = 1; // normalize argument
3676381fbed8Smatthias.ringwald 
36773a9fb326S[email protected]     if (hci_stack->discoverable == enable){
36783a9fb326S[email protected]         hci_emit_discoverable_enabled(hci_stack->discoverable);
3679381fbed8Smatthias.ringwald         return;
3680381fbed8Smatthias.ringwald     }
3681381fbed8Smatthias.ringwald 
36823a9fb326S[email protected]     hci_stack->discoverable = enable;
3683758b46ceSmatthias.ringwald     hci_update_scan_enable();
3684758b46ceSmatthias.ringwald }
3685b031bebbSmatthias.ringwald 
368615a95bd5SMatthias Ringwald void gap_connectable_control(uint8_t enable){
3687758b46ceSmatthias.ringwald     if (enable) enable = 1; // normalize argument
3688758b46ceSmatthias.ringwald 
3689758b46ceSmatthias.ringwald     // don't emit event
36903a9fb326S[email protected]     if (hci_stack->connectable == enable) return;
3691758b46ceSmatthias.ringwald 
36923a9fb326S[email protected]     hci_stack->connectable = enable;
3693758b46ceSmatthias.ringwald     hci_update_scan_enable();
3694381fbed8Smatthias.ringwald }
369535454696SMatthias Ringwald #endif
3696381fbed8Smatthias.ringwald 
369715a95bd5SMatthias Ringwald void gap_local_bd_addr(bd_addr_t address_buffer){
36986535961aSMatthias Ringwald     (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6);
36995061f3afS[email protected] }
37005061f3afS[email protected] 
37012b838201SMatthias Ringwald #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL
37022b838201SMatthias Ringwald static void hci_host_num_completed_packets(void){
37032b838201SMatthias Ringwald 
37042b838201SMatthias Ringwald     // create packet manually as arrays are not supported and num_commands should not get reduced
37052b838201SMatthias Ringwald     hci_reserve_packet_buffer();
37062b838201SMatthias Ringwald     uint8_t * packet = hci_get_outgoing_packet_buffer();
37072b838201SMatthias Ringwald 
37082b838201SMatthias Ringwald     uint16_t size = 0;
37092b838201SMatthias Ringwald     uint16_t num_handles = 0;
37102b838201SMatthias Ringwald     packet[size++] = 0x35;
37112b838201SMatthias Ringwald     packet[size++] = 0x0c;
37122b838201SMatthias Ringwald     size++;  // skip param len
37132b838201SMatthias Ringwald     size++;  // skip num handles
37142b838201SMatthias Ringwald 
37152b838201SMatthias Ringwald     // add { handle, packets } entries
37162b838201SMatthias Ringwald     btstack_linked_item_t * it;
37172b838201SMatthias Ringwald     for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){
37182b838201SMatthias Ringwald         hci_connection_t * connection = (hci_connection_t *) it;
37192b838201SMatthias Ringwald         if (connection->num_packets_completed){
37202b838201SMatthias Ringwald             little_endian_store_16(packet, size, connection->con_handle);
37212b838201SMatthias Ringwald             size += 2;
37222b838201SMatthias Ringwald             little_endian_store_16(packet, size, connection->num_packets_completed);
37232b838201SMatthias Ringwald             size += 2;
37242b838201SMatthias Ringwald             //
37252b838201SMatthias Ringwald             num_handles++;
37262b838201SMatthias Ringwald             connection->num_packets_completed = 0;
37272b838201SMatthias Ringwald         }
37282b838201SMatthias Ringwald     }
37292b838201SMatthias Ringwald 
37302b838201SMatthias Ringwald     packet[2] = size - 3;
37312b838201SMatthias Ringwald     packet[3] = num_handles;
37322b838201SMatthias Ringwald 
37332b838201SMatthias Ringwald     hci_stack->host_completed_packets = 0;
37342b838201SMatthias Ringwald 
37352b838201SMatthias Ringwald     hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size);
37362b838201SMatthias Ringwald     hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size);
37372b838201SMatthias Ringwald 
37382b838201SMatthias Ringwald     // release packet buffer for synchronous transport implementations
37392b838201SMatthias Ringwald     if (hci_transport_synchronous()){
3740e2d22487SMatthias Ringwald         hci_release_packet_buffer();
3741068b8592SMatthias Ringwald         hci_emit_transport_packet_sent();
37422b838201SMatthias Ringwald     }
37432b838201SMatthias Ringwald }
37442b838201SMatthias Ringwald #endif
37452b838201SMatthias Ringwald 
374626fe9592SMatthias Ringwald static void hci_halting_timeout_handler(btstack_timer_source_t * ds){
374726fe9592SMatthias Ringwald     UNUSED(ds);
374826fe9592SMatthias Ringwald     hci_stack->substate = HCI_HALTING_CLOSE;
3749beceeddeSMatthias Ringwald     // allow packet handlers to defer final shutdown
3750beceeddeSMatthias Ringwald     hci_emit_state();
375126fe9592SMatthias Ringwald     hci_run();
375226fe9592SMatthias Ringwald }
375326fe9592SMatthias Ringwald 
3754f30077b7SMatthias Ringwald static bool hci_run_acl_fragments(void){
37554ea43905SMatthias Ringwald     if (hci_stack->acl_fragmentation_total_size > 0u) {
3756b5d8b22bS[email protected]         hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer);
3757b5d8b22bS[email protected]         hci_connection_t *connection = hci_connection_for_handle(con_handle);
3758b5d8b22bS[email protected]         if (connection) {
375928a0332dSMatthias Ringwald             if (hci_can_send_prepared_acl_packet_now(con_handle)){
3760b5d8b22bS[email protected]                 hci_send_acl_packet_fragments(connection);
3761f30077b7SMatthias Ringwald                 return true;
3762b5d8b22bS[email protected]             }
376328a0332dSMatthias Ringwald         } else {
3764b5d8b22bS[email protected]             // connection gone -> discard further fragments
376528a0332dSMatthias Ringwald             log_info("hci_run: fragmented ACL packet no connection -> discard fragment");
3766b5d8b22bS[email protected]             hci_stack->acl_fragmentation_total_size = 0;
3767b5d8b22bS[email protected]             hci_stack->acl_fragmentation_pos = 0;
3768b5d8b22bS[email protected]         }
3769b5d8b22bS[email protected]     }
3770f30077b7SMatthias Ringwald     return false;
37712b838201SMatthias Ringwald }
3772b031bebbSmatthias.ringwald 
377335454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
3774f30077b7SMatthias Ringwald static bool hci_run_general_gap_classic(void){
3775f30077b7SMatthias Ringwald 
3776b031bebbSmatthias.ringwald     // decline incoming connections
37773a9fb326S[email protected]     if (hci_stack->decline_reason){
37783a9fb326S[email protected]         uint8_t reason = hci_stack->decline_reason;
37793a9fb326S[email protected]         hci_stack->decline_reason = 0;
37803a9fb326S[email protected]         hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason);
3781f30077b7SMatthias Ringwald         return true;
3782ce4c8fabSmatthias.ringwald     }
3783bea424a5SMatthias Ringwald     // write page scan activity
3784bea424a5SMatthias Ringwald     if ((hci_stack->state == HCI_STATE_WORKING) && (hci_stack->new_page_scan_interval != 0xffff) && hci_classic_supported()){
3785bea424a5SMatthias Ringwald         hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window);
3786bea424a5SMatthias Ringwald         hci_stack->new_page_scan_interval = 0xffff;
3787bea424a5SMatthias Ringwald         hci_stack->new_page_scan_window = 0xffff;
3788bea424a5SMatthias Ringwald         return true;
3789bea424a5SMatthias Ringwald     }
3790bea424a5SMatthias Ringwald     // write page scan type
3791bea424a5SMatthias Ringwald     if ((hci_stack->state == HCI_STATE_WORKING) && (hci_stack->new_page_scan_type != 0xff) && hci_classic_supported()){
3792bea424a5SMatthias Ringwald         hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type);
3793bea424a5SMatthias Ringwald         hci_stack->new_page_scan_type = 0xff;
3794bea424a5SMatthias Ringwald         return true;
3795bea424a5SMatthias Ringwald     }
3796b031bebbSmatthias.ringwald     // send scan enable
37970e588213SMatthias Ringwald     if ((hci_stack->state == HCI_STATE_WORKING) && (hci_stack->new_scan_enable_value != 0xff) && hci_classic_supported()){
37983a9fb326S[email protected]         hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value);
37993a9fb326S[email protected]         hci_stack->new_scan_enable_value = 0xff;
3800f30077b7SMatthias Ringwald         return true;
3801b031bebbSmatthias.ringwald     }
3802f5875de5SMatthias Ringwald     // start/stop inquiry
3803a1df452eSMatthias Ringwald     if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){
3804f5875de5SMatthias Ringwald         uint8_t duration = hci_stack->inquiry_state;
3805beb3c81dSMatthias Ringwald         hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE;
38068aee7be2SMilanka Ringwald         hci_send_cmd(&hci_inquiry, GAP_IAC_GENERAL_INQUIRY, duration, 0);
3807f30077b7SMatthias Ringwald         return true;
3808f5875de5SMatthias Ringwald     }
3809f5875de5SMatthias Ringwald     if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){
3810f5875de5SMatthias Ringwald         hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED;
3811f5875de5SMatthias Ringwald         hci_send_cmd(&hci_inquiry_cancel);
3812f30077b7SMatthias Ringwald         return true;
3813f5875de5SMatthias Ringwald     }
3814b7f1ee76SMatthias Ringwald     // remote name request
3815b7f1ee76SMatthias Ringwald     if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){
3816b7f1ee76SMatthias Ringwald         hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE;
3817b7f1ee76SMatthias Ringwald         hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr,
3818ee8a36c8SMatthias Ringwald                      hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset);
3819f30077b7SMatthias Ringwald         return true;
3820b7f1ee76SMatthias Ringwald     }
3821cf01e888SMatthias Ringwald #ifdef ENABLE_CLASSIC_PAIRING_OOB
3822cf01e888SMatthias Ringwald     // Local OOB data
3823cf01e888SMatthias Ringwald     if ((hci_stack->state == HCI_STATE_WORKING) && hci_stack->classic_read_local_oob_data){
3824cf01e888SMatthias Ringwald         hci_stack->classic_read_local_oob_data = false;
3825cf01e888SMatthias Ringwald         if (hci_stack->local_supported_commands[1] & 0x10u){
3826cf01e888SMatthias Ringwald             hci_send_cmd(&hci_read_local_extended_oob_data);
3827cf01e888SMatthias Ringwald         } else {
3828cf01e888SMatthias Ringwald             hci_send_cmd(&hci_read_local_oob_data);
3829cf01e888SMatthias Ringwald         }
3830cf01e888SMatthias Ringwald     }
3831cf01e888SMatthias Ringwald #endif
38320a51f88bSMatthias Ringwald     // pairing
38330a51f88bSMatthias Ringwald     if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){
38340a51f88bSMatthias Ringwald         uint8_t state = hci_stack->gap_pairing_state;
38350a51f88bSMatthias Ringwald         hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE;
38360a51f88bSMatthias Ringwald         switch (state){
38370a51f88bSMatthias Ringwald             case GAP_PAIRING_STATE_SEND_PIN:
3838aad97216SMatthias Ringwald                 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, hci_stack->gap_pairing_input.gap_pairing_pin);
38390a51f88bSMatthias Ringwald                 break;
38400a51f88bSMatthias Ringwald             case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE:
38410a51f88bSMatthias Ringwald                 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr);
38420a51f88bSMatthias Ringwald                 break;
38430a51f88bSMatthias Ringwald             case GAP_PAIRING_STATE_SEND_PASSKEY:
3844d504181aSMatthias Ringwald                 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey);
38450a51f88bSMatthias Ringwald                 break;
38460a51f88bSMatthias Ringwald             case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE:
38470a51f88bSMatthias Ringwald                 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr);
38480a51f88bSMatthias Ringwald                 break;
38490a51f88bSMatthias Ringwald             case GAP_PAIRING_STATE_SEND_CONFIRMATION:
38500a51f88bSMatthias Ringwald                 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr);
38510a51f88bSMatthias Ringwald                 break;
38520a51f88bSMatthias Ringwald             case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE:
38530a51f88bSMatthias Ringwald                 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr);
38540a51f88bSMatthias Ringwald                 break;
38550a51f88bSMatthias Ringwald             default:
38560a51f88bSMatthias Ringwald                 break;
38570a51f88bSMatthias Ringwald         }
3858f30077b7SMatthias Ringwald         return true;
3859f30077b7SMatthias Ringwald     }
3860f30077b7SMatthias Ringwald     return false;
38610a51f88bSMatthias Ringwald }
386235454696SMatthias Ringwald #endif
3863b031bebbSmatthias.ringwald 
3864a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
3865f30077b7SMatthias Ringwald static bool hci_run_general_gap_le(void){
3866f30077b7SMatthias Ringwald 
3867f30077b7SMatthias Ringwald     // advertisements, active scanning, and creating connections requires random address to be set if using private address
3868f30077b7SMatthias Ringwald 
3869f30077b7SMatthias Ringwald     if (hci_stack->state != HCI_STATE_WORKING) return false;
38704ea43905SMatthias Ringwald     if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false;
3871d70217a2SMatthias Ringwald 
3872a41310b7SMatthias Ringwald 
3873a41310b7SMatthias Ringwald     // Phase 1: collect what to stop
3874a41310b7SMatthias Ringwald 
3875a41310b7SMatthias Ringwald     bool scanning_stop = false;
3876a41310b7SMatthias Ringwald     bool connecting_stop = false;
3877a41310b7SMatthias Ringwald     bool advertising_stop = false;
3878a41310b7SMatthias Ringwald 
3879a41310b7SMatthias Ringwald #ifndef ENABLE_LE_CENTRAL
3880a41310b7SMatthias Ringwald     UNUSED(scanning_stop);
38810abd9f64SMatthias Ringwald     UNUSED(connecting_stop);
3882a41310b7SMatthias Ringwald #endif
3883a41310b7SMatthias Ringwald #ifndef ENABLE_LE_PERIPHERAL
3884a41310b7SMatthias Ringwald     UNUSED(advertising_stop);
3885a41310b7SMatthias Ringwald #endif
3886a41310b7SMatthias Ringwald 
388729c24bebSMatthias Ringwald     // check if whitelist needs modification
388829c24bebSMatthias Ringwald     bool whitelist_modification_pending = false;
388929c24bebSMatthias Ringwald     btstack_linked_list_iterator_t lit;
389029c24bebSMatthias Ringwald     btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist);
389129c24bebSMatthias Ringwald     while (btstack_linked_list_iterator_has_next(&lit)){
389229c24bebSMatthias Ringwald         whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit);
389329c24bebSMatthias Ringwald         if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){
389429c24bebSMatthias Ringwald             whitelist_modification_pending = true;
389529c24bebSMatthias Ringwald             break;
389629c24bebSMatthias Ringwald         }
389729c24bebSMatthias Ringwald     }
389821debf25SMatthias Ringwald     // check if resolving list needs modification
389921debf25SMatthias Ringwald     bool resolving_list_modification_pending = false;
390021debf25SMatthias Ringwald #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION
3901ea151974SMatthias Ringwald     bool resolving_list_supported = (hci_stack->local_supported_commands[1] & (1 << 2)) != 0;
3902ea151974SMatthias Ringwald 	if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){
390321debf25SMatthias Ringwald         resolving_list_modification_pending = true;
390421debf25SMatthias Ringwald     }
390521debf25SMatthias Ringwald #endif
390629c24bebSMatthias Ringwald 
3907d70217a2SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
3908fde725feSMatthias Ringwald     // scanning control
39093251a108SMatthias Ringwald     if (hci_stack->le_scanning_active) {
391029c24bebSMatthias Ringwald         // stop if:
391129c24bebSMatthias Ringwald         // - parameter change required
391229c24bebSMatthias Ringwald         // - it's disabled
391329c24bebSMatthias Ringwald         // - whitelist change required but used for scanning
391421debf25SMatthias Ringwald         // - resolving list modified
391529c24bebSMatthias Ringwald         bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1;
391621debf25SMatthias Ringwald         if ((hci_stack->le_scanning_param_update) ||
391721debf25SMatthias Ringwald             !hci_stack->le_scanning_enabled ||
391821debf25SMatthias Ringwald             scanning_uses_whitelist ||
391921debf25SMatthias Ringwald             resolving_list_modification_pending){
392021debf25SMatthias Ringwald 
39212d5c2a27SMatthias Ringwald             scanning_stop = true;
3922fde725feSMatthias Ringwald         }
3923fde725feSMatthias Ringwald     }
392429c24bebSMatthias Ringwald #endif
3925fde725feSMatthias Ringwald 
392629c24bebSMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
392729c24bebSMatthias Ringwald     // connecting control
3928f496d06eSMatthias Ringwald     bool connecting_with_whitelist;
3929f496d06eSMatthias Ringwald     switch (hci_stack->le_connecting_state){
3930f496d06eSMatthias Ringwald         case LE_CONNECTING_DIRECT:
3931f496d06eSMatthias Ringwald         case LE_CONNECTING_WHITELIST:
3932af64f147SMatthias Ringwald             // stop connecting if:
3933af64f147SMatthias Ringwald             // - connecting uses white and whitelist modification pending
3934af64f147SMatthias Ringwald             // - if it got disabled
393521debf25SMatthias Ringwald             // - resolving list modified
3936f496d06eSMatthias Ringwald             connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST;
3937f496d06eSMatthias Ringwald             if ((connecting_with_whitelist && whitelist_modification_pending) ||
393821debf25SMatthias Ringwald                 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) ||
393921debf25SMatthias Ringwald                 resolving_list_modification_pending) {
394021debf25SMatthias Ringwald 
394129c24bebSMatthias Ringwald                 connecting_stop = true;
394229c24bebSMatthias Ringwald             }
3943f496d06eSMatthias Ringwald             break;
3944f496d06eSMatthias Ringwald         default:
3945f496d06eSMatthias Ringwald             break;
394629c24bebSMatthias Ringwald     }
3947d70217a2SMatthias Ringwald #endif
394829c24bebSMatthias Ringwald 
3949d70217a2SMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
395045c102fdSMatthias Ringwald     // le advertisement control
3951bbc366e6SMatthias Ringwald     if (hci_stack->le_advertisements_active){
395229c24bebSMatthias Ringwald         // stop if:
395329c24bebSMatthias Ringwald         // - parameter change required
395429c24bebSMatthias Ringwald         // - it's disabled
3955ba44ad41SMatthias Ringwald         // - whitelist change required but used for advertisement filter policy
395621debf25SMatthias Ringwald         // - resolving list modified
395729c24bebSMatthias Ringwald         bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy > 0;
395821debf25SMatthias Ringwald         if ((hci_stack->le_advertisements_todo != 0) ||
395921debf25SMatthias Ringwald             !hci_stack->le_advertisements_enabled_for_current_roles ||
396021debf25SMatthias Ringwald             (advertising_uses_whitelist & whitelist_modification_pending) ||
396121debf25SMatthias Ringwald             resolving_list_modification_pending) {
396221debf25SMatthias Ringwald 
3963fde725feSMatthias Ringwald             advertising_stop = true;
3964fde725feSMatthias Ringwald         }
3965fde725feSMatthias Ringwald     }
3966a41310b7SMatthias Ringwald #endif
3967fde725feSMatthias Ringwald 
3968a41310b7SMatthias Ringwald 
3969a41310b7SMatthias Ringwald     // Phase 2: stop everything that should be off during modifications
3970a41310b7SMatthias Ringwald 
3971a41310b7SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
3972a41310b7SMatthias Ringwald     if (scanning_stop){
39735226d7f2SMatthias Ringwald         hci_stack->le_scanning_active = false;
3974a41310b7SMatthias Ringwald         hci_send_cmd(&hci_le_set_scan_enable, 0, 0);
3975a41310b7SMatthias Ringwald         return true;
3976a41310b7SMatthias Ringwald     }
3977a41310b7SMatthias Ringwald #endif
3978a41310b7SMatthias Ringwald 
3979a41310b7SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
3980a41310b7SMatthias Ringwald     if (connecting_stop){
3981a41310b7SMatthias Ringwald         hci_send_cmd(&hci_le_create_connection_cancel);
3982a41310b7SMatthias Ringwald         return true;
3983a41310b7SMatthias Ringwald     }
3984a41310b7SMatthias Ringwald #endif
3985a41310b7SMatthias Ringwald 
3986a41310b7SMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
3987fde725feSMatthias Ringwald     if (advertising_stop){
39885226d7f2SMatthias Ringwald         hci_stack->le_advertisements_active = false;
398945c102fdSMatthias Ringwald         hci_send_cmd(&hci_le_set_advertise_enable, 0);
3990f30077b7SMatthias Ringwald         return true;
399145c102fdSMatthias Ringwald     }
3992a41310b7SMatthias Ringwald #endif
3993fde725feSMatthias Ringwald 
3994a41310b7SMatthias Ringwald     // Phase 3: modify
3995a41310b7SMatthias Ringwald 
3996a41310b7SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
3997a41310b7SMatthias Ringwald     if (hci_stack->le_scanning_param_update){
3998a41310b7SMatthias Ringwald         hci_stack->le_scanning_param_update = false;
3999a41310b7SMatthias Ringwald         hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window,
4000a41310b7SMatthias Ringwald                      hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy);
4001a41310b7SMatthias Ringwald         return true;
4002a41310b7SMatthias Ringwald     }
4003a41310b7SMatthias Ringwald #endif
4004a41310b7SMatthias Ringwald 
4005a41310b7SMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
400645c102fdSMatthias Ringwald     if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){
400745c102fdSMatthias Ringwald         hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS;
400845c102fdSMatthias Ringwald         hci_send_cmd(&hci_le_set_advertising_parameters,
400945c102fdSMatthias Ringwald                      hci_stack->le_advertisements_interval_min,
401045c102fdSMatthias Ringwald                      hci_stack->le_advertisements_interval_max,
401145c102fdSMatthias Ringwald                      hci_stack->le_advertisements_type,
4012b95a5a35SMatthias Ringwald                      hci_stack->le_own_addr_type,
401345c102fdSMatthias Ringwald                      hci_stack->le_advertisements_direct_address_type,
401445c102fdSMatthias Ringwald                      hci_stack->le_advertisements_direct_address,
401545c102fdSMatthias Ringwald                      hci_stack->le_advertisements_channel_map,
401645c102fdSMatthias Ringwald                      hci_stack->le_advertisements_filter_policy);
4017f30077b7SMatthias Ringwald         return true;
401845c102fdSMatthias Ringwald     }
4019501f56b3SMatthias Ringwald     if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){
4020501f56b3SMatthias Ringwald         hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA;
40217a85e4f5SMatthias Ringwald         uint8_t adv_data_clean[31];
40227a85e4f5SMatthias Ringwald         memset(adv_data_clean, 0, sizeof(adv_data_clean));
40236535961aSMatthias Ringwald         (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data,
40246535961aSMatthias Ringwald                      hci_stack->le_advertisements_data_len);
40253c9da642SMatthias Ringwald         btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr);
40267a85e4f5SMatthias Ringwald         hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean);
4027f30077b7SMatthias Ringwald         return true;
402845c102fdSMatthias Ringwald     }
4029501f56b3SMatthias Ringwald     if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){
4030501f56b3SMatthias Ringwald         hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA;
4031f868b059SMatthias Ringwald         uint8_t scan_data_clean[31];
4032f868b059SMatthias Ringwald         memset(scan_data_clean, 0, sizeof(scan_data_clean));
40336535961aSMatthias Ringwald         (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data,
40346535961aSMatthias Ringwald                      hci_stack->le_scan_response_data_len);
40353c9da642SMatthias Ringwald         btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr);
4036214bfd60SMatthias Ringwald         hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean);
4037f30077b7SMatthias Ringwald         return true;
4038501f56b3SMatthias Ringwald     }
4039d70217a2SMatthias Ringwald #endif
40409956955bSMatthias Ringwald 
404113eb2a2eSMatthias Ringwald 
4042057ab60cSMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
4043a41310b7SMatthias Ringwald     // if connect with whitelist was active and is not cancelled yet, wait until next time
4044a41310b7SMatthias Ringwald     if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false;
4045057ab60cSMatthias Ringwald #endif
4046057ab60cSMatthias Ringwald 
4047a41310b7SMatthias Ringwald     // LE Whitelist Management
4048a41310b7SMatthias Ringwald     if (whitelist_modification_pending){
40499956955bSMatthias Ringwald         // add/remove entries
4050665d90f2SMatthias Ringwald         btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist);
4051665d90f2SMatthias Ringwald         while (btstack_linked_list_iterator_has_next(&lit)){
4052665d90f2SMatthias Ringwald             whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit);
4053453459ddSMatthias Ringwald 			if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){
4054453459ddSMatthias Ringwald 				entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER;
4055453459ddSMatthias Ringwald 				hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address);
4056453459ddSMatthias Ringwald 				return true;
4057453459ddSMatthias Ringwald 			}
40589956955bSMatthias Ringwald             if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){
4059453459ddSMatthias Ringwald 				entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER;
4060453459ddSMatthias Ringwald                 entry->state |= LE_WHITELIST_ON_CONTROLLER;
40619956955bSMatthias Ringwald                 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address);
4062f30077b7SMatthias Ringwald                 return true;
40639956955bSMatthias Ringwald             }
4064453459ddSMatthias Ringwald             if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){
4065665d90f2SMatthias Ringwald 				btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry);
40669956955bSMatthias Ringwald 				btstack_memory_whitelist_entry_free(entry);
40679956955bSMatthias Ringwald             }
40689956955bSMatthias Ringwald         }
406991915b0bSMatthias Ringwald     }
40709956955bSMatthias Ringwald 
407121debf25SMatthias Ringwald #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION
407221debf25SMatthias Ringwald     // LE Resolving List Management
4073ea151974SMatthias Ringwald     if (resolving_list_supported) {
407421debf25SMatthias Ringwald 		uint16_t i;
407521debf25SMatthias Ringwald 		switch (hci_stack->le_resolving_list_state) {
407621debf25SMatthias Ringwald 			case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION:
407721debf25SMatthias Ringwald 				hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE;
407821debf25SMatthias Ringwald 				hci_send_cmd(&hci_le_set_address_resolution_enabled, 1);
407921debf25SMatthias Ringwald 				return true;
408021debf25SMatthias Ringwald 			case LE_RESOLVING_LIST_READ_SIZE:
408121debf25SMatthias Ringwald 				hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR;
408221debf25SMatthias Ringwald 				hci_send_cmd(&hci_le_read_resolving_list_size);
408321debf25SMatthias Ringwald 				return true;
408421debf25SMatthias Ringwald 			case LE_RESOLVING_LIST_SEND_CLEAR:
408502b02cffSMatthias Ringwald 				hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES;
4086ea151974SMatthias Ringwald 				(void) memset(hci_stack->le_resolving_list_add_entries, 0xff,
4087ea151974SMatthias Ringwald 							  sizeof(hci_stack->le_resolving_list_add_entries));
4088ea151974SMatthias Ringwald 				(void) memset(hci_stack->le_resolving_list_remove_entries, 0,
4089ea151974SMatthias Ringwald 							  sizeof(hci_stack->le_resolving_list_remove_entries));
409021debf25SMatthias Ringwald 				hci_send_cmd(&hci_le_clear_resolving_list);
409121debf25SMatthias Ringwald 				return true;
409202b02cffSMatthias Ringwald 			case LE_RESOLVING_LIST_REMOVE_ENTRIES:
409302b02cffSMatthias Ringwald 				for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) {
409402b02cffSMatthias Ringwald 					uint8_t offset = i >> 3;
409502b02cffSMatthias Ringwald 					uint8_t mask = 1 << (i & 7);
409602b02cffSMatthias Ringwald 					if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue;
409702b02cffSMatthias Ringwald 					hci_stack->le_resolving_list_remove_entries[offset] &= ~mask;
409802b02cffSMatthias Ringwald 					bd_addr_t peer_identity_addreses;
409902b02cffSMatthias Ringwald 					int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN;
410002b02cffSMatthias Ringwald 					sm_key_t peer_irk;
410102b02cffSMatthias Ringwald 					le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk);
410202b02cffSMatthias Ringwald 					if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue;
4103f5228c62SMatthias Ringwald 
4104f5228c62SMatthias Ringwald #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE
4105f5228c62SMatthias Ringwald 					// trigger whitelist entry 'update' (work around for controller bug)
4106f5228c62SMatthias Ringwald 					btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist);
4107f5228c62SMatthias Ringwald 					while (btstack_linked_list_iterator_has_next(&lit)) {
4108f5228c62SMatthias Ringwald 						whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit);
4109f5228c62SMatthias Ringwald 						if (entry->address_type != peer_identity_addr_type) continue;
4110f5228c62SMatthias Ringwald 						if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue;
4111f5228c62SMatthias Ringwald 						log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses));
4112f5228c62SMatthias Ringwald 						entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER;
4113f5228c62SMatthias Ringwald 					}
4114f5228c62SMatthias Ringwald #endif
4115f5228c62SMatthias Ringwald 
4116ea151974SMatthias Ringwald 					hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type,
4117ea151974SMatthias Ringwald 								 peer_identity_addreses);
411802b02cffSMatthias Ringwald 					return true;
411902b02cffSMatthias Ringwald 				}
412002b02cffSMatthias Ringwald 
412102b02cffSMatthias Ringwald 				hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES;
412202b02cffSMatthias Ringwald 
412302b02cffSMatthias Ringwald 				/* fall through */
412402b02cffSMatthias Ringwald 
412521debf25SMatthias Ringwald 			case LE_RESOLVING_LIST_ADD_ENTRIES:
412621debf25SMatthias Ringwald 				for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) {
412721debf25SMatthias Ringwald 					uint8_t offset = i >> 3;
412821debf25SMatthias Ringwald 					uint8_t mask = 1 << (i & 7);
412902b02cffSMatthias Ringwald 					if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue;
413002b02cffSMatthias Ringwald 					hci_stack->le_resolving_list_add_entries[offset] &= ~mask;
413121debf25SMatthias Ringwald 					bd_addr_t peer_identity_addreses;
413221debf25SMatthias Ringwald 					int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN;
413321debf25SMatthias Ringwald 					sm_key_t peer_irk;
413421debf25SMatthias Ringwald 					le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk);
413521debf25SMatthias Ringwald 					if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue;
413621debf25SMatthias Ringwald 					const uint8_t *local_irk = gap_get_persistent_irk();
413721debf25SMatthias Ringwald 					// command uses format specifier 'P' that stores 16-byte value without flip
413821debf25SMatthias Ringwald 					uint8_t local_irk_flipped[16];
413921debf25SMatthias Ringwald 					uint8_t peer_irk_flipped[16];
414021debf25SMatthias Ringwald 					reverse_128(local_irk, local_irk_flipped);
414121debf25SMatthias Ringwald 					reverse_128(peer_irk, peer_irk_flipped);
4142ea151974SMatthias Ringwald 					hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses,
4143ea151974SMatthias Ringwald 								 peer_irk_flipped, local_irk_flipped);
414421debf25SMatthias Ringwald 					return true;
414521debf25SMatthias Ringwald 				}
414602b02cffSMatthias Ringwald 				hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE;
414721debf25SMatthias Ringwald 				break;
414802b02cffSMatthias Ringwald 
414921debf25SMatthias Ringwald 			default:
415021debf25SMatthias Ringwald 				break;
415121debf25SMatthias Ringwald 		}
4152ea151974SMatthias Ringwald 	}
415321debf25SMatthias Ringwald     hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE;
415421debf25SMatthias Ringwald #endif
4155a41310b7SMatthias Ringwald 
4156a41310b7SMatthias Ringwald     // Phase 4: restore state
415729c24bebSMatthias Ringwald 
415829c24bebSMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
4159af64f147SMatthias Ringwald     // re-start scanning
416029c24bebSMatthias Ringwald     if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){
416129c24bebSMatthias Ringwald         hci_stack->le_scanning_active = true;
416229c24bebSMatthias Ringwald         hci_send_cmd(&hci_le_set_scan_enable, 1, 0);
416329c24bebSMatthias Ringwald         return true;
416429c24bebSMatthias Ringwald     }
416529c24bebSMatthias Ringwald #endif
416629c24bebSMatthias Ringwald 
416713eb2a2eSMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
4168af64f147SMatthias Ringwald     // re-start connecting
4169af64f147SMatthias Ringwald     if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){
41709956955bSMatthias Ringwald         bd_addr_t null_addr;
41719956955bSMatthias Ringwald         memset(null_addr, 0, 6);
41729956955bSMatthias Ringwald         hci_send_cmd(&hci_le_create_connection,
4173cbe54ab2SJakob Krantz                      hci_stack->le_connection_scan_interval,    // scan interval: 60 ms
4174cbe54ab2SJakob Krantz                      hci_stack->le_connection_scan_window,    // scan interval: 30 ms
41759956955bSMatthias Ringwald                      1,         // use whitelist
41769956955bSMatthias Ringwald                      0,         // peer address type
41779956955bSMatthias Ringwald                      null_addr, // peer bd addr
4178b95a5a35SMatthias Ringwald                      hci_stack->le_own_addr_type, // our addr type:
417973044eb2SMatthias Ringwald                      hci_stack->le_connection_interval_min,    // conn interval min
418073044eb2SMatthias Ringwald                      hci_stack->le_connection_interval_max,    // conn interval max
418173044eb2SMatthias Ringwald                      hci_stack->le_connection_latency,         // conn latency
418273044eb2SMatthias Ringwald                      hci_stack->le_supervision_timeout,        // conn latency
418373044eb2SMatthias Ringwald                      hci_stack->le_minimum_ce_length,          // min ce length
418473044eb2SMatthias Ringwald                      hci_stack->le_maximum_ce_length           // max ce length
41859956955bSMatthias Ringwald         );
4186f30077b7SMatthias Ringwald         return true;
41879956955bSMatthias Ringwald     }
4188d70217a2SMatthias Ringwald #endif
4189a41310b7SMatthias Ringwald 
4190a41310b7SMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
4191a41310b7SMatthias Ringwald     // re-start advertising
41928978dcf1SMatthias Ringwald     if (hci_stack->le_advertisements_enabled_for_current_roles && !hci_stack->le_advertisements_active){
4193a41310b7SMatthias Ringwald         // check if advertisements should be enabled given
41945226d7f2SMatthias Ringwald         hci_stack->le_advertisements_active = true;
4195a41310b7SMatthias Ringwald         hci_send_cmd(&hci_le_set_advertise_enable, 1);
4196a41310b7SMatthias Ringwald         return true;
4197a41310b7SMatthias Ringwald     }
4198a41310b7SMatthias Ringwald #endif
4199a41310b7SMatthias Ringwald 
4200f30077b7SMatthias Ringwald     return false;
42017bdc6798S[email protected] }
4202b2f949feS[email protected] #endif
42037bdc6798S[email protected] 
420488a03c8dSMatthias Ringwald static bool hci_run_general_pending_commands(void){
4205f30077b7SMatthias Ringwald     btstack_linked_item_t * it;
4206a0da043fSMatthias Ringwald     for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){
420705ae8de3SMatthias Ringwald         hci_connection_t * connection = (hci_connection_t *) it;
420832ab9390Smatthias.ringwald 
42090bf6344aS[email protected]         switch(connection->state){
42100bf6344aS[email protected]             case SEND_CREATE_CONNECTION:
42114f3229d8S[email protected]                 switch(connection->address_type){
421235454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
4213f16129ceSMatthias Ringwald                     case BD_ADDR_TYPE_ACL:
42149da54300S[email protected]                         log_info("sending hci_create_connection");
4215b4eb4420SMatthias Ringwald                         hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch);
42164f3229d8S[email protected]                         break;
421735454696SMatthias Ringwald #endif
42184f3229d8S[email protected]                     default:
4219a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
4220d70217a2SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
42219da54300S[email protected]                         log_info("sending hci_le_create_connection");
42224f3229d8S[email protected]                         hci_send_cmd(&hci_le_create_connection,
4223cbe54ab2SJakob Krantz                                      hci_stack->le_connection_scan_interval,    // conn scan interval
4224cbe54ab2SJakob Krantz                                      hci_stack->le_connection_scan_window,      // conn scan windows
42254f3229d8S[email protected]                                      0,         // don't use whitelist
42264f3229d8S[email protected]                                      connection->address_type, // peer address type
42274f3229d8S[email protected]                                      connection->address,      // peer bd addr
4228b95a5a35SMatthias Ringwald                                      hci_stack->le_own_addr_type, // our addr type:
422973044eb2SMatthias Ringwald                                      hci_stack->le_connection_interval_min,    // conn interval min
423073044eb2SMatthias Ringwald                                      hci_stack->le_connection_interval_max,    // conn interval max
423173044eb2SMatthias Ringwald                                      hci_stack->le_connection_latency,         // conn latency
423273044eb2SMatthias Ringwald                                      hci_stack->le_supervision_timeout,        // conn latency
423373044eb2SMatthias Ringwald                                      hci_stack->le_minimum_ce_length,          // min ce length
423473044eb2SMatthias Ringwald                                      hci_stack->le_maximum_ce_length          // max ce length
42354f3229d8S[email protected]                         );
42364f3229d8S[email protected]                         connection->state = SENT_CREATE_CONNECTION;
4237b2f949feS[email protected] #endif
4238d70217a2SMatthias Ringwald #endif
42394f3229d8S[email protected]                         break;
42404f3229d8S[email protected]                 }
4241f30077b7SMatthias Ringwald                 return true;
4242ad83dc6aS[email protected] 
424335454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
42440bf6344aS[email protected]             case RECEIVED_CONNECTION_REQUEST:
42455cf766e8SMatthias Ringwald                 connection->role  = HCI_ROLE_SLAVE;
4246f16129ceSMatthias Ringwald                 if (connection->address_type == BD_ADDR_TYPE_ACL){
424776ccfb2aSMatthias Ringwald                     log_info("sending hci_accept_connection_request");
4248895f6685SMilanka Ringwald                     connection->state = ACCEPTED_CONNECTION_REQUEST;
4249c4c88f1bSJakob Krantz                     hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy);
4250e35edcc1S[email protected]                 }
4251f30077b7SMatthias Ringwald                 return true;
425235454696SMatthias Ringwald #endif
42530bf6344aS[email protected] 
4254a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
4255d70217a2SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
42560bf6344aS[email protected]             case SEND_CANCEL_CONNECTION:
42570bf6344aS[email protected]                 connection->state = SENT_CANCEL_CONNECTION;
42580bf6344aS[email protected]                 hci_send_cmd(&hci_le_create_connection_cancel);
4259f30077b7SMatthias Ringwald                 return true;
4260a6725849S[email protected] #endif
4261d70217a2SMatthias Ringwald #endif
42620bf6344aS[email protected]             case SEND_DISCONNECT:
42630bf6344aS[email protected]                 connection->state = SENT_DISCONNECT;
42646ef3696aSMatthias Ringwald                 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION);
4265f30077b7SMatthias Ringwald                 return true;
42660bf6344aS[email protected] 
42670bf6344aS[email protected]             default:
42680bf6344aS[email protected]                 break;
4269c7e0c5f6Smatthias.ringwald         }
4270c7e0c5f6Smatthias.ringwald 
4271cabf004eSMatthias Ringwald         // no further commands if connection is about to get shut down
4272cabf004eSMatthias Ringwald         if (connection->state == SENT_DISCONNECT) continue;
4273cabf004eSMatthias Ringwald 
4274891b9fc2SMatthias Ringwald         if (connection->authentication_flags & READ_RSSI){
4275891b9fc2SMatthias Ringwald             connectionClearAuthenticationFlags(connection, READ_RSSI);
4276891b9fc2SMatthias Ringwald             hci_send_cmd(&hci_read_rssi, connection->con_handle);
4277f30077b7SMatthias Ringwald             return true;
4278891b9fc2SMatthias Ringwald         }
4279891b9fc2SMatthias Ringwald 
428094418890SMatthias Ringwald #ifdef ENABLE_CLASSIC
428194418890SMatthias Ringwald 
42826909f064SMatthias Ringwald         if (connection->authentication_flags & WRITE_SUPERVISION_TIMEOUT){
42836909f064SMatthias Ringwald             connectionClearAuthenticationFlags(connection, WRITE_SUPERVISION_TIMEOUT);
42846909f064SMatthias Ringwald             hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout);
4285f30077b7SMatthias Ringwald             return true;
42866909f064SMatthias Ringwald         }
42876909f064SMatthias Ringwald 
428832ab9390Smatthias.ringwald         if (connection->authentication_flags & HANDLE_LINK_KEY_REQUEST){
4289608f51bbSMatthias Ringwald             log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL);
429034d2123cS[email protected]             connectionClearAuthenticationFlags(connection, HANDLE_LINK_KEY_REQUEST);
429130e72d78SMatthias Ringwald 
429232ab9390Smatthias.ringwald             link_key_t link_key;
4293c77e8838S[email protected]             link_key_type_t link_key_type;
429430e72d78SMatthias Ringwald             bool have_link_key = hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(connection->address, link_key, &link_key_type);
429530e72d78SMatthias Ringwald 
429630e72d78SMatthias Ringwald             const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER;
429730e72d78SMatthias Ringwald             bool sc_enabled_remote = (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask;
429830e72d78SMatthias Ringwald             bool sc_downgrade = have_link_key && (gap_secure_connection_for_link_key_type(link_key_type) == 1) && !sc_enabled_remote;
429930e72d78SMatthias Ringwald             if (sc_downgrade){
430030e72d78SMatthias Ringwald                 log_info("Link key based on SC, but remote does not support SC -> disconnect");
430130e72d78SMatthias Ringwald                 connection->state = SENT_DISCONNECT;
430230e72d78SMatthias Ringwald                 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE);
430330e72d78SMatthias Ringwald                 return true;
430430e72d78SMatthias Ringwald             }
430530e72d78SMatthias Ringwald 
430630e72d78SMatthias Ringwald             bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(link_key_type) >= connection->requested_security_level);
430730e72d78SMatthias Ringwald             if (have_link_key && security_level_sufficient){
43089ab95c90S[email protected]                 connection->link_key_type = link_key_type;
430932ab9390Smatthias.ringwald                 hci_send_cmd(&hci_link_key_request_reply, connection->address, &link_key);
431032ab9390Smatthias.ringwald             } else {
431132ab9390Smatthias.ringwald                 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address);
431232ab9390Smatthias.ringwald             }
4313f30077b7SMatthias Ringwald             return true;
431432ab9390Smatthias.ringwald         }
43151d6b20aeS[email protected] 
4316899283eaS[email protected]         if (connection->authentication_flags & DENY_PIN_CODE_REQUEST){
43179da54300S[email protected]             log_info("denying to pin request");
4318899283eaS[email protected]             connectionClearAuthenticationFlags(connection, DENY_PIN_CODE_REQUEST);
431934d2123cS[email protected]             hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address);
4320f30077b7SMatthias Ringwald             return true;
43214c57c146S[email protected]         }
43224c57c146S[email protected] 
4323dbe1a790S[email protected]         if (connection->authentication_flags & SEND_IO_CAPABILITIES_REPLY){
432434d2123cS[email protected]             connectionClearAuthenticationFlags(connection, SEND_IO_CAPABILITIES_REPLY);
4325106d6d11S[email protected]             // tweak authentication requirements
43263a9fb326S[email protected]             uint8_t authreq = hci_stack->ssp_authentication_requirement;
4327106d6d11S[email protected]             if (connection->bonding_flags & BONDING_DEDICATED){
43289faad3abS[email protected]                 authreq = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING;
43299faad3abS[email protected]             }
43309faad3abS[email protected]             if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){
43319faad3abS[email protected]                 authreq |= 1;
4332106d6d11S[email protected]             }
43331849becdSMatthias Ringwald             uint8_t have_oob_data = 0;
43341849becdSMatthias Ringwald #ifdef ENABLE_CLASSIC_PAIRING_OOB
43351849becdSMatthias Ringwald             if (connection->classic_oob_c_192 != NULL){
43361849becdSMatthias Ringwald                     have_oob_data |= 1;
43371849becdSMatthias Ringwald             }
43381849becdSMatthias Ringwald             if (connection->classic_oob_c_256 != NULL){
43391849becdSMatthias Ringwald                 have_oob_data |= 2;
43401849becdSMatthias Ringwald             }
43411849becdSMatthias Ringwald #endif
43421849becdSMatthias Ringwald             hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq);
434311b03efaSMatthias Ringwald             return true;
4344f8fb5f6eS[email protected]         }
434511b03efaSMatthias Ringwald 
434611b03efaSMatthias Ringwald         if (connection->authentication_flags & SEND_IO_CAPABILITIES_NEGATIVE_REPLY) {
434711b03efaSMatthias Ringwald             connectionClearAuthenticationFlags(connection, SEND_IO_CAPABILITIES_NEGATIVE_REPLY);
434811b03efaSMatthias Ringwald             hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED);
4349f30077b7SMatthias Ringwald             return true;
435032ab9390Smatthias.ringwald         }
435132ab9390Smatthias.ringwald 
43521849becdSMatthias Ringwald #ifdef ENABLE_CLASSIC_PAIRING_OOB
43531849becdSMatthias Ringwald         if (connection->authentication_flags & SEND_REMOTE_OOB_DATA_REPLY){
43541849becdSMatthias Ringwald             connectionClearAuthenticationFlags(connection, SEND_REMOTE_OOB_DATA_REPLY);
43551849becdSMatthias Ringwald             const uint8_t zero[16] = { 0 };
43561849becdSMatthias Ringwald             const uint8_t * r_192 = zero;
43571849becdSMatthias Ringwald             const uint8_t * c_192 = zero;
43581849becdSMatthias Ringwald             const uint8_t * r_256 = zero;
43591849becdSMatthias Ringwald             const uint8_t * c_256 = zero;
43601849becdSMatthias Ringwald             // verify P-256 OOB
43611849becdSMatthias Ringwald             if ((connection->classic_oob_c_256 != NULL) && ((hci_stack->local_supported_commands[1] & 0x08u) != 0)) {
43621849becdSMatthias Ringwald                 c_256 = connection->classic_oob_c_256;
43631849becdSMatthias Ringwald                 if (connection->classic_oob_r_256 != NULL) {
43641849becdSMatthias Ringwald                     r_256 = connection->classic_oob_r_256;
43651849becdSMatthias Ringwald                 }
43661849becdSMatthias Ringwald             }
43671849becdSMatthias Ringwald             // verify P-192 OOB
43681849becdSMatthias Ringwald             if ((connection->classic_oob_c_192 != NULL)) {
43691849becdSMatthias Ringwald                 c_192 = connection->classic_oob_c_192;
43701849becdSMatthias Ringwald                 if (connection->classic_oob_r_192 != NULL) {
43711849becdSMatthias Ringwald                     r_192 = connection->classic_oob_r_192;
43721849becdSMatthias Ringwald                 }
43731849becdSMatthias Ringwald             }
43741849becdSMatthias Ringwald             // Reply
43751849becdSMatthias Ringwald             if (c_256 != zero) {
43761849becdSMatthias Ringwald                 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256);
43771849becdSMatthias Ringwald             } else if (c_192 != zero){
43781849becdSMatthias Ringwald                 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192);
43791849becdSMatthias Ringwald             } else {
43801849becdSMatthias Ringwald                 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address);
43811849becdSMatthias Ringwald             }
43821849becdSMatthias Ringwald             return true;
43831849becdSMatthias Ringwald         }
43841849becdSMatthias Ringwald #endif
43851849becdSMatthias Ringwald 
4386dbe1a790S[email protected]         if (connection->authentication_flags & SEND_USER_CONFIRM_REPLY){
4387dbe1a790S[email protected]             connectionClearAuthenticationFlags(connection, SEND_USER_CONFIRM_REPLY);
438834d2123cS[email protected]             hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address);
4389f30077b7SMatthias Ringwald             return true;
4390dbe1a790S[email protected]         }
4391dbe1a790S[email protected] 
4392dbe1a790S[email protected]         if (connection->authentication_flags & SEND_USER_PASSKEY_REPLY){
4393dbe1a790S[email protected]             connectionClearAuthenticationFlags(connection, SEND_USER_PASSKEY_REPLY);
439434d2123cS[email protected]             hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000);
4395f30077b7SMatthias Ringwald             return true;
4396dbe1a790S[email protected]         }
4397afd4e962S[email protected] 
4398ba018746SMatthias Ringwald         if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){
4399ba018746SMatthias Ringwald             connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0;
440034d2123cS[email protected]             hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle);
4401f30077b7SMatthias Ringwald             return true;
44022bd8b7e7S[email protected]         }
44032bd8b7e7S[email protected] 
44045ccef624SMatthias Ringwald         if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){
44055ccef624SMatthias Ringwald             connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1;
44065ccef624SMatthias Ringwald             hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1);
44075ccef624SMatthias Ringwald             return true;
44085ccef624SMatthias Ringwald         }
44095ccef624SMatthias Ringwald 
441082721f83SMatthias Ringwald         if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){
441182721f83SMatthias Ringwald             connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2;
441282721f83SMatthias Ringwald             hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2);
441382721f83SMatthias Ringwald             return true;
441482721f83SMatthias Ringwald         }
441582721f83SMatthias Ringwald 
4416ad83dc6aS[email protected]         if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){
4417ad83dc6aS[email protected]             connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE;
44181bd5283dS[email protected]             connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT;
44196ef3696aSMatthias Ringwald             connection->state = SENT_DISCONNECT;
44206ef3696aSMatthias Ringwald             hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION);
4421f30077b7SMatthias Ringwald             return true;
4422ad83dc6aS[email protected]         }
442376f27cffSMatthias Ringwald 
442434d2123cS[email protected]         if (connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST){
442534d2123cS[email protected]             connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST;
4426abdad579SMatthias Ringwald             connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST;
442734d2123cS[email protected]             hci_send_cmd(&hci_authentication_requested, connection->con_handle);
4428f30077b7SMatthias Ringwald             return true;
4429afd4e962S[email protected]         }
443076f27cffSMatthias Ringwald 
4431dce78009S[email protected]         if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){
4432dce78009S[email protected]             connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST;
4433dce78009S[email protected]             hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1);
4434f30077b7SMatthias Ringwald             return true;
4435dce78009S[email protected]         }
4436573897a0SMatthias Ringwald         if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){
4437573897a0SMatthias Ringwald             connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE;
4438573897a0SMatthias Ringwald             hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1);
4439f30077b7SMatthias Ringwald             return true;
4440573897a0SMatthias Ringwald         }
444176f27cffSMatthias Ringwald #endif
444276f27cffSMatthias Ringwald 
444376f27cffSMatthias Ringwald         if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){
444476f27cffSMatthias Ringwald             connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK;
44456ef3696aSMatthias Ringwald             if (connection->state != SENT_DISCONNECT){
44466ef3696aSMatthias Ringwald                 connection->state = SENT_DISCONNECT;
44476ef3696aSMatthias Ringwald                 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE);
4448f30077b7SMatthias Ringwald                 return true;
444976f27cffSMatthias Ringwald             }
44506ef3696aSMatthias Ringwald         }
4451da886c03S[email protected] 
44526cdc2862SMatthias Ringwald #ifdef ENABLE_CLASSIC
4453f8ee3071SMatthias Ringwald         uint16_t sniff_min_interval;
4454f8ee3071SMatthias Ringwald         switch (connection->sniff_min_interval){
4455f8ee3071SMatthias Ringwald             case 0:
4456f8ee3071SMatthias Ringwald                 break;
4457f8ee3071SMatthias Ringwald             case 0xffff:
4458f8ee3071SMatthias Ringwald                 connection->sniff_min_interval = 0;
4459f8ee3071SMatthias Ringwald                 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle);
4460f30077b7SMatthias Ringwald                 return true;
4461f8ee3071SMatthias Ringwald             default:
4462f8ee3071SMatthias Ringwald                 sniff_min_interval = connection->sniff_min_interval;
4463f8ee3071SMatthias Ringwald                 connection->sniff_min_interval = 0;
4464f8ee3071SMatthias Ringwald                 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout);
4465f30077b7SMatthias Ringwald                 return true;
4466f8ee3071SMatthias Ringwald         }
446788a03c8dSMatthias Ringwald 
446888a03c8dSMatthias Ringwald         if (connection->request_role != HCI_ROLE_INVALID){
446988a03c8dSMatthias Ringwald             hci_role_t  role = connection->request_role;
447088a03c8dSMatthias Ringwald             connection->request_role = HCI_ROLE_INVALID;
447188a03c8dSMatthias Ringwald             hci_send_cmd(&hci_switch_role_command, connection->address, role);
447288a03c8dSMatthias Ringwald             return true;
447388a03c8dSMatthias Ringwald         }
44746cdc2862SMatthias Ringwald #endif
4475f8ee3071SMatthias Ringwald 
4476a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
447773cd8a2aSMatthias Ringwald         switch (connection->le_con_parameter_update_state){
447873cd8a2aSMatthias Ringwald             // response to L2CAP CON PARAMETER UPDATE REQUEST
447973cd8a2aSMatthias Ringwald             case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS:
4480da886c03S[email protected]                 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE;
448173cd8a2aSMatthias Ringwald                 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min,
4482c37a3166S[email protected]                              connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout,
4483c37a3166S[email protected]                              0x0000, 0xffff);
4484f30077b7SMatthias Ringwald                 return true;
448573cd8a2aSMatthias Ringwald             case CON_PARAMETER_UPDATE_REPLY:
448673cd8a2aSMatthias Ringwald                 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE;
448773cd8a2aSMatthias Ringwald                 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min,
448873cd8a2aSMatthias Ringwald                              connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout,
448973cd8a2aSMatthias Ringwald                              0x0000, 0xffff);
4490f30077b7SMatthias Ringwald                 return true;
449173cd8a2aSMatthias Ringwald             case CON_PARAMETER_UPDATE_NEGATIVE_REPLY:
449273cd8a2aSMatthias Ringwald                 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE;
449373cd8a2aSMatthias Ringwald                 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, ERROR_CODE_UNSUPPORTED_LMP_PARAMETER_VALUE_UNSUPPORTED_LL_PARAMETER_VALUE);
4494f30077b7SMatthias Ringwald                 return true;
449573cd8a2aSMatthias Ringwald             default:
449673cd8a2aSMatthias Ringwald                 break;
4497c37a3166S[email protected]         }
44984ea43905SMatthias Ringwald         if (connection->le_phy_update_all_phys != 0xffu){
4499b90f6e0aSMatthias Ringwald             uint8_t all_phys = connection->le_phy_update_all_phys;
4500b90f6e0aSMatthias Ringwald             connection->le_phy_update_all_phys = 0xff;
4501b90f6e0aSMatthias Ringwald             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);
4502f30077b7SMatthias Ringwald             return true;
4503b90f6e0aSMatthias Ringwald         }
4504c37a3166S[email protected] #endif
4505dbe1a790S[email protected]     }
4506f30077b7SMatthias Ringwald     return false;
4507f30077b7SMatthias Ringwald }
4508c7e0c5f6Smatthias.ringwald 
4509f30077b7SMatthias Ringwald static void hci_run(void){
4510f30077b7SMatthias Ringwald 
4511f30077b7SMatthias Ringwald     bool done;
4512f30077b7SMatthias Ringwald 
4513f30077b7SMatthias Ringwald     // send continuation fragments first, as they block the prepared packet buffer
4514f30077b7SMatthias Ringwald     done = hci_run_acl_fragments();
4515f30077b7SMatthias Ringwald     if (done) return;
4516f30077b7SMatthias Ringwald 
4517f30077b7SMatthias Ringwald #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL
4518f30077b7SMatthias Ringwald     // send host num completed packets next as they don't require num_cmd_packets > 0
4519f30077b7SMatthias Ringwald     if (!hci_can_send_comand_packet_transport()) return;
4520f30077b7SMatthias Ringwald     if (hci_stack->host_completed_packets){
4521f30077b7SMatthias Ringwald         hci_host_num_completed_packets();
4522f30077b7SMatthias Ringwald         return;
4523f30077b7SMatthias Ringwald     }
4524f30077b7SMatthias Ringwald #endif
4525f30077b7SMatthias Ringwald 
4526f30077b7SMatthias Ringwald     if (!hci_can_send_command_packet_now()) return;
4527f30077b7SMatthias Ringwald 
4528f30077b7SMatthias Ringwald     // global/non-connection oriented commands
4529f30077b7SMatthias Ringwald 
4530f30077b7SMatthias Ringwald 
4531f30077b7SMatthias Ringwald #ifdef ENABLE_CLASSIC
4532f30077b7SMatthias Ringwald     // general gap classic
4533f30077b7SMatthias Ringwald     done = hci_run_general_gap_classic();
4534f30077b7SMatthias Ringwald     if (done) return;
4535f30077b7SMatthias Ringwald #endif
4536f30077b7SMatthias Ringwald 
4537f30077b7SMatthias Ringwald #ifdef ENABLE_BLE
4538f30077b7SMatthias Ringwald     // general gap le
4539f30077b7SMatthias Ringwald     done = hci_run_general_gap_le();
4540f30077b7SMatthias Ringwald     if (done) return;
4541f30077b7SMatthias Ringwald #endif
4542f30077b7SMatthias Ringwald 
4543f30077b7SMatthias Ringwald     // send pending HCI commands
454488a03c8dSMatthias Ringwald     done = hci_run_general_pending_commands();
4545f30077b7SMatthias Ringwald     if (done) return;
4546f30077b7SMatthias Ringwald 
4547f30077b7SMatthias Ringwald     // stack state sub statemachines
454805ae8de3SMatthias Ringwald     hci_connection_t * connection;
45493a9fb326S[email protected]     switch (hci_stack->state){
45503429f56bSmatthias.ringwald         case HCI_STATE_INITIALIZING:
455174b323a9SMatthias Ringwald             hci_initializing_run();
45523429f56bSmatthias.ringwald             break;
4553c7e0c5f6Smatthias.ringwald 
4554c7e0c5f6Smatthias.ringwald         case HCI_STATE_HALTING:
4555c7e0c5f6Smatthias.ringwald 
455626fe9592SMatthias Ringwald             log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate);
455726fe9592SMatthias Ringwald             switch (hci_stack->substate){
4558beceeddeSMatthias Ringwald                 case HCI_HALTING_DISCONNECT_ALL_NO_TIMER:
4559beceeddeSMatthias Ringwald                 case HCI_HALTING_DISCONNECT_ALL_TIMER:
4560beceeddeSMatthias Ringwald 
4561a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
4562d70217a2SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
4563beceeddeSMatthias Ringwald                     // free whitelist entries
45649956955bSMatthias Ringwald                     {
4565665d90f2SMatthias Ringwald                         btstack_linked_list_iterator_t lit;
4566665d90f2SMatthias Ringwald                         btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist);
4567665d90f2SMatthias Ringwald                         while (btstack_linked_list_iterator_has_next(&lit)){
4568665d90f2SMatthias Ringwald                             whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit);
4569665d90f2SMatthias Ringwald                             btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry);
45709956955bSMatthias Ringwald                             btstack_memory_whitelist_entry_free(entry);
45719956955bSMatthias Ringwald                         }
45729956955bSMatthias Ringwald                     }
45739956955bSMatthias Ringwald #endif
4574d70217a2SMatthias Ringwald #endif
4575c7e0c5f6Smatthias.ringwald                     // close all open connections
45763a9fb326S[email protected]                     connection =  (hci_connection_t *) hci_stack->connections;
4577c7e0c5f6Smatthias.ringwald                     if (connection){
4578711e6c80SMatthias Ringwald                         hci_con_handle_t con_handle = (uint16_t) connection->con_handle;
4579d94d3cafS[email protected]                         if (!hci_can_send_command_packet_now()) return;
458032ab9390Smatthias.ringwald 
45818fca890eSMatthias Ringwald                         // check state
45828fca890eSMatthias Ringwald                         if (connection->state == SENT_DISCONNECT) return;
45838fca890eSMatthias Ringwald                         connection->state = SENT_DISCONNECT;
45848fca890eSMatthias Ringwald 
45858837e9efSMatthias Ringwald                         log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle);
4586c7e0c5f6Smatthias.ringwald 
45878837e9efSMatthias Ringwald                         // cancel all l2cap connections right away instead of waiting for disconnection complete event ...
45888837e9efSMatthias Ringwald                         hci_emit_disconnection_complete(con_handle, 0x16); // terminated by local host
45898837e9efSMatthias Ringwald 
45908837e9efSMatthias Ringwald                         // ... which would be ignored anyway as we shutdown (free) the connection now
4591c7e0c5f6Smatthias.ringwald                         hci_shutdown_connection(connection);
45928837e9efSMatthias Ringwald 
45938837e9efSMatthias Ringwald                         // finally, send the disconnect command
45946ef3696aSMatthias Ringwald                         hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION);
4595c7e0c5f6Smatthias.ringwald                         return;
4596c7e0c5f6Smatthias.ringwald                     }
459726fe9592SMatthias Ringwald 
4598beceeddeSMatthias Ringwald                     if (hci_stack->substate == HCI_HALTING_DISCONNECT_ALL_TIMER){
4599beceeddeSMatthias Ringwald                         // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event
4600beceeddeSMatthias Ringwald                         log_info("HCI_STATE_HALTING: wait 50 ms");
460126fe9592SMatthias Ringwald                         hci_stack->substate = HCI_HALTING_W4_TIMER;
4602beceeddeSMatthias Ringwald                         btstack_run_loop_set_timer(&hci_stack->timeout, 50);
460326fe9592SMatthias Ringwald                         btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler);
460426fe9592SMatthias Ringwald                         btstack_run_loop_add_timer(&hci_stack->timeout);
460526fe9592SMatthias Ringwald                         break;
4606beceeddeSMatthias Ringwald                     }
460726fe9592SMatthias Ringwald 
4608cf373d3aSMatthias Ringwald                     /* fall through */
460926fe9592SMatthias Ringwald 
461026fe9592SMatthias Ringwald                 case HCI_HALTING_CLOSE:
46119da54300S[email protected]                     log_info("HCI_STATE_HALTING, calling off");
4612c7e0c5f6Smatthias.ringwald 
461372ea5239Smatthias.ringwald                     // switch mode
4614c7e0c5f6Smatthias.ringwald                     hci_power_control_off();
46159418f9c9Smatthias.ringwald 
46169da54300S[email protected]                     log_info("HCI_STATE_HALTING, emitting state");
461772ea5239Smatthias.ringwald                     hci_emit_state();
46189da54300S[email protected]                     log_info("HCI_STATE_HALTING, done");
461972ea5239Smatthias.ringwald                     break;
4620beceeddeSMatthias Ringwald 
4621beceeddeSMatthias Ringwald                 case HCI_HALTING_W4_TIMER:
4622beceeddeSMatthias Ringwald                     // keep waiting
4623beceeddeSMatthias Ringwald 
4624beceeddeSMatthias Ringwald                     break;
462526fe9592SMatthias Ringwald                 default:
462626fe9592SMatthias Ringwald                     break;
462726fe9592SMatthias Ringwald             }
462826fe9592SMatthias Ringwald 
462926fe9592SMatthias Ringwald             break;
4630c7e0c5f6Smatthias.ringwald 
463172ea5239Smatthias.ringwald         case HCI_STATE_FALLING_ASLEEP:
46323a9fb326S[email protected]             switch(hci_stack->substate) {
463374b323a9SMatthias Ringwald                 case HCI_FALLING_ASLEEP_DISCONNECT:
46349da54300S[email protected]                     log_info("HCI_STATE_FALLING_ASLEEP");
463572ea5239Smatthias.ringwald                     // close all open connections
46363a9fb326S[email protected]                     connection =  (hci_connection_t *) hci_stack->connections;
463766da7044Smatthias.ringwald 
4638423a3e49SMatthias Ringwald #ifdef HAVE_PLATFORM_IPHONE_OS
463966da7044Smatthias.ringwald                     // don't close connections, if H4 supports power management
4640d0b87befSMatthias Ringwald                     if (btstack_control_iphone_power_management_enabled()){
464166da7044Smatthias.ringwald                         connection = NULL;
464266da7044Smatthias.ringwald                     }
464366da7044Smatthias.ringwald #endif
464472ea5239Smatthias.ringwald                     if (connection){
464532ab9390Smatthias.ringwald 
464672ea5239Smatthias.ringwald                         // send disconnect
4647d94d3cafS[email protected]                         if (!hci_can_send_command_packet_now()) return;
464832ab9390Smatthias.ringwald 
46499da54300S[email protected]                         log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle);
46506ef3696aSMatthias Ringwald                         hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION);
465172ea5239Smatthias.ringwald 
465272ea5239Smatthias.ringwald                         // send disconnected event right away - causes higher layer connections to get closed, too.
465372ea5239Smatthias.ringwald                         hci_shutdown_connection(connection);
465472ea5239Smatthias.ringwald                         return;
465572ea5239Smatthias.ringwald                     }
465672ea5239Smatthias.ringwald 
465792368cd3S[email protected]                     if (hci_classic_supported()){
465889db417bSmatthias.ringwald                         // disable page and inquiry scan
4659d94d3cafS[email protected]                         if (!hci_can_send_command_packet_now()) return;
466032ab9390Smatthias.ringwald 
46619da54300S[email protected]                         log_info("HCI_STATE_HALTING, disabling inq scans");
46623a9fb326S[email protected]                         hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan
466389db417bSmatthias.ringwald 
466489db417bSmatthias.ringwald                         // continue in next sub state
466574b323a9SMatthias Ringwald                         hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE;
466689db417bSmatthias.ringwald                         break;
466792368cd3S[email protected]                     }
4668cf373d3aSMatthias Ringwald 
4669cf373d3aSMatthias Ringwald                     /* fall through */
467092368cd3S[email protected] 
467174b323a9SMatthias Ringwald                 case HCI_FALLING_ASLEEP_COMPLETE:
46729da54300S[email protected]                     log_info("HCI_STATE_HALTING, calling sleep");
4673423a3e49SMatthias Ringwald #ifdef HAVE_PLATFORM_IPHONE_OS
467428171530Smatthias.ringwald                     // don't actually go to sleep, if H4 supports power management
4675d0b87befSMatthias Ringwald                     if (btstack_control_iphone_power_management_enabled()){
467628171530Smatthias.ringwald                         // SLEEP MODE reached
46773a9fb326S[email protected]                         hci_stack->state = HCI_STATE_SLEEPING;
467828171530Smatthias.ringwald                         hci_emit_state();
467928171530Smatthias.ringwald                         break;
468028171530Smatthias.ringwald                     }
468128171530Smatthias.ringwald #endif
468272ea5239Smatthias.ringwald                     // switch mode
46833a9fb326S[email protected]                     hci_power_control_sleep();  // changes hci_stack->state to SLEEP
4684c7e0c5f6Smatthias.ringwald                     hci_emit_state();
468528171530Smatthias.ringwald                     break;
468628171530Smatthias.ringwald 
468789db417bSmatthias.ringwald                 default:
468889db417bSmatthias.ringwald                     break;
468989db417bSmatthias.ringwald             }
4690c7e0c5f6Smatthias.ringwald             break;
4691c7e0c5f6Smatthias.ringwald 
46923429f56bSmatthias.ringwald         default:
46933429f56bSmatthias.ringwald             break;
46941f504dbdSmatthias.ringwald     }
46953429f56bSmatthias.ringwald }
469616833f0aSmatthias.ringwald 
469731452debSmatthias.ringwald int hci_send_cmd_packet(uint8_t *packet, int size){
469835454696SMatthias Ringwald     // house-keeping
469935454696SMatthias Ringwald 
470035454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
4701c8e4258aSmatthias.ringwald     bd_addr_t addr;
4702c8e4258aSmatthias.ringwald     hci_connection_t * conn;
4703c123d999SMatthias Ringwald #endif
4704c123d999SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
47056f35bb46SMatthias Ringwald     uint8_t initiator_filter_policy;
47069cbd2215SMatthias Ringwald #endif
4707c8e4258aSmatthias.ringwald 
47086f35bb46SMatthias Ringwald     uint16_t opcode = little_endian_read_16(packet, 0);
47096f35bb46SMatthias Ringwald     switch (opcode) {
47109cbd2215SMatthias Ringwald         case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE:
47119cbd2215SMatthias Ringwald             hci_stack->loopback_mode = packet[3];
47129cbd2215SMatthias Ringwald             break;
47139cbd2215SMatthias Ringwald 
47149cbd2215SMatthias Ringwald #ifdef ENABLE_CLASSIC
47156f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_CREATE_CONNECTION:
4716724d70a2SMatthias Ringwald             reverse_bd_addr(&packet[3], addr);
47179da54300S[email protected]             log_info("Create_connection to %s", bd_addr_to_str(addr));
4718c8e4258aSmatthias.ringwald 
4719f16129ceSMatthias Ringwald             conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL);
4720ad83dc6aS[email protected]             if (!conn) {
4721f16129ceSMatthias Ringwald                 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL);
472217f1ba2aSmatthias.ringwald                 if (!conn) {
472317f1ba2aSmatthias.ringwald                     // notify client that alloc failed
47242deddeceSMatthias Ringwald                     hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED);
4725f5e5741dSMatthias Ringwald                     return -1; // packet not sent to controller
472617f1ba2aSmatthias.ringwald                 }
4727ad83dc6aS[email protected]                 conn->state = SEND_CREATE_CONNECTION;
4728f3e2cd2aSMatthias Ringwald                 conn->role  = HCI_ROLE_MASTER;
4729ad83dc6aS[email protected]             }
4730ad83dc6aS[email protected]             log_info("conn state %u", conn->state);
4731ad83dc6aS[email protected]             switch (conn->state) {
4732ad83dc6aS[email protected]                 // if connection active exists
4733ad83dc6aS[email protected]                 case OPEN:
4734f5e5741dSMatthias Ringwald                     // and OPEN, emit connection complete command
4735274dad91SMatthias Ringwald                     hci_emit_connection_complete(addr, conn->con_handle, 0);
4736f5e5741dSMatthias Ringwald                     return -1; // packet not sent to controller
4737672e36abSMatthias Ringwald                 case RECEIVED_DISCONNECTION_COMPLETE:
4738672e36abSMatthias Ringwald                     // create connection triggered in disconnect complete event, let's do it now
4739672e36abSMatthias Ringwald                     break;
4740ad83dc6aS[email protected]                 case SEND_CREATE_CONNECTION:
4741532f91a5SMatthias Ringwald                     // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now
4742532f91a5SMatthias Ringwald                     break;
4743ad83dc6aS[email protected]                 default:
4744ad83dc6aS[email protected]                     // otherwise, just ignore as it is already in the open process
4745f5e5741dSMatthias Ringwald                     return -1; // packet not sent to controller
4746ad83dc6aS[email protected]             }
4747c8e4258aSmatthias.ringwald             conn->state = SENT_CREATE_CONNECTION;
4748229331c6SMatthias Ringwald 
4749229331c6SMatthias Ringwald             // track outgoing connection
4750f16129ceSMatthias Ringwald             hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL;
47516535961aSMatthias Ringwald             (void) memcpy(hci_stack->outgoing_addr, addr, 6);
47526f35bb46SMatthias Ringwald             break;
47536f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_LINK_KEY_REQUEST_REPLY:
47547fde4af9Smatthias.ringwald             hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_REPLY);
47556f35bb46SMatthias Ringwald             break;
47566f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_LINK_KEY_REQUEST_NEGATIVE_REPLY:
47577fde4af9Smatthias.ringwald             hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_NEGATIVE_REQUEST);
47586f35bb46SMatthias Ringwald             break;
47596f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_DELETE_STORED_LINK_KEY:
4760a98592bcSMatthias Ringwald             if (hci_stack->link_key_db) {
4761724d70a2SMatthias Ringwald                 reverse_bd_addr(&packet[3], addr);
4762a98592bcSMatthias Ringwald                 hci_stack->link_key_db->delete_link_key(addr);
47638ef73945Smatthias.ringwald             }
47646f35bb46SMatthias Ringwald             break;
47656f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY:
47666f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_PIN_CODE_REQUEST_REPLY:
4767724d70a2SMatthias Ringwald             reverse_bd_addr(&packet[3], addr);
4768f16129ceSMatthias Ringwald             conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL);
47696724cd9eS[email protected]             if (conn) {
47706724cd9eS[email protected]                 connectionClearAuthenticationFlags(conn, LEGACY_PAIRING_ACTIVE);
47716724cd9eS[email protected]             }
47726f35bb46SMatthias Ringwald             break;
47736f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY:
47746f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_REPLY:
47756f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY:
47766f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_REPLY:
4777724d70a2SMatthias Ringwald             reverse_bd_addr(&packet[3], addr);
4778f16129ceSMatthias Ringwald             conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL);
47796724cd9eS[email protected]             if (conn) {
47806724cd9eS[email protected]                 connectionClearAuthenticationFlags(conn, SSP_PAIRING_ACTIVE);
47816724cd9eS[email protected]             }
47826f35bb46SMatthias Ringwald             break;
4783ee752bb8SMatthias Ringwald 
47845b7087c7SMatthias Ringwald #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT)
47856f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION:
4786ee752bb8SMatthias Ringwald             // setup_synchronous_connection? Voice setting at offset 22
4787ee752bb8SMatthias Ringwald             // TODO: compare to current setting if sco connection already active
4788ee752bb8SMatthias Ringwald             hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15);
47896f35bb46SMatthias Ringwald             break;
47906f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION:
4791ee752bb8SMatthias Ringwald             // accept_synchronus_connection? Voice setting at offset 18
4792ee752bb8SMatthias Ringwald             // TODO: compare to current setting if sco connection already active
4793ee752bb8SMatthias Ringwald             hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19);
47946f35bb46SMatthias Ringwald             break;
4795ee752bb8SMatthias Ringwald #endif
479635454696SMatthias Ringwald #endif
47974b3e1e19SMatthias Ringwald 
4798a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
47996f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_LE_SET_RANDOM_ADDRESS:
4800b95a5a35SMatthias Ringwald             hci_stack->le_random_address_set = 1;
4801b95a5a35SMatthias Ringwald             reverse_bd_addr(&packet[3], hci_stack->le_random_address);
48026f35bb46SMatthias Ringwald             break;
48037e8d8b1dSMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
48046f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_LE_SET_ADVERTISE_ENABLE:
48055226d7f2SMatthias Ringwald             hci_stack->le_advertisements_active = packet[3] != 0;
48066f35bb46SMatthias Ringwald             break;
4807d70217a2SMatthias Ringwald #endif
4808d70217a2SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
48096f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_LE_CREATE_CONNECTION:
4810b04dfa37SMatthias Ringwald             // white list used?
48116f35bb46SMatthias Ringwald             initiator_filter_policy = packet[7];
4812b04dfa37SMatthias Ringwald             switch (initiator_filter_policy) {
4813b04dfa37SMatthias Ringwald                 case 0:
4814b04dfa37SMatthias Ringwald                     // whitelist not used
4815b04dfa37SMatthias Ringwald                     hci_stack->le_connecting_state = LE_CONNECTING_DIRECT;
4816b04dfa37SMatthias Ringwald                     break;
4817b04dfa37SMatthias Ringwald                 case 1:
4818b04dfa37SMatthias Ringwald                     hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST;
4819b04dfa37SMatthias Ringwald                     break;
4820b04dfa37SMatthias Ringwald                 default:
4821b04dfa37SMatthias Ringwald                     log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy);
4822b04dfa37SMatthias Ringwald                     break;
4823b04dfa37SMatthias Ringwald             }
4824c163146eSMatthias Ringwald             // track outgoing connection
482505002aecSMatthias Ringwald             hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type
4826c163146eSMatthias Ringwald             reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address
48276f35bb46SMatthias Ringwald             break;
48286f35bb46SMatthias Ringwald         case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL:
48296ea9315cSMatthias Ringwald             hci_stack->le_connecting_state = LE_CONNECTING_CANCEL;
48306f35bb46SMatthias Ringwald             break;
48319cbd2215SMatthias Ringwald #endif
48329cbd2215SMatthias Ringwald #endif
48336f35bb46SMatthias Ringwald         default:
48346f35bb46SMatthias Ringwald             break;
4835b04dfa37SMatthias Ringwald     }
483669a97523S[email protected] 
48373a9fb326S[email protected]     hci_stack->num_cmd_packets--;
48385bb5bc3eS[email protected] 
48395bb5bc3eS[email protected]     hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size);
4840bfea0222SMatthias Ringwald     return hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size);
484131452debSmatthias.ringwald }
48428adf0ddaSmatthias.ringwald 
48432bd8b7e7S[email protected] // disconnect because of security block
48442bd8b7e7S[email protected] void hci_disconnect_security_block(hci_con_handle_t con_handle){
48452bd8b7e7S[email protected]     hci_connection_t * connection = hci_connection_for_handle(con_handle);
48462bd8b7e7S[email protected]     if (!connection) return;
48472bd8b7e7S[email protected]     connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK;
48482bd8b7e7S[email protected] }
48492bd8b7e7S[email protected] 
48502bd8b7e7S[email protected] 
4851dbe1a790S[email protected] // Configure Secure Simple Pairing
4852dbe1a790S[email protected] 
485335454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
485435454696SMatthias Ringwald 
4855dbe1a790S[email protected] // enable will enable SSP during init
485615a95bd5SMatthias Ringwald void gap_ssp_set_enable(int enable){
48573a9fb326S[email protected]     hci_stack->ssp_enable = enable;
4858dbe1a790S[email protected] }
4859dbe1a790S[email protected] 
486095d71764SMatthias Ringwald static int hci_local_ssp_activated(void){
486115a95bd5SMatthias Ringwald     return gap_ssp_supported() && hci_stack->ssp_enable;
48622bd8b7e7S[email protected] }
48632bd8b7e7S[email protected] 
4864dbe1a790S[email protected] // if set, BTstack will respond to io capability request using authentication requirement
486515a95bd5SMatthias Ringwald void gap_ssp_set_io_capability(int io_capability){
48663a9fb326S[email protected]     hci_stack->ssp_io_capability = io_capability;
4867dbe1a790S[email protected] }
486815a95bd5SMatthias Ringwald void gap_ssp_set_authentication_requirement(int authentication_requirement){
48693a9fb326S[email protected]     hci_stack->ssp_authentication_requirement = authentication_requirement;
4870dbe1a790S[email protected] }
4871dbe1a790S[email protected] 
4872dbe1a790S[email protected] // if set, BTstack will confirm a numberic comparion and enter '000000' if requested
487315a95bd5SMatthias Ringwald void gap_ssp_set_auto_accept(int auto_accept){
48743a9fb326S[email protected]     hci_stack->ssp_auto_accept = auto_accept;
4875dbe1a790S[email protected] }
48765d23aae8SMatthias Ringwald 
48775d23aae8SMatthias Ringwald void gap_secure_connections_enable(bool enable){
48785d23aae8SMatthias Ringwald     hci_stack->secure_connections_enable = enable;
48795d23aae8SMatthias Ringwald }
48805d23aae8SMatthias Ringwald 
488135454696SMatthias Ringwald #endif
4882dbe1a790S[email protected] 
488394be1a66SMatthias Ringwald // va_list part of hci_send_cmd
488494be1a66SMatthias Ringwald int hci_send_cmd_va_arg(const hci_cmd_t *cmd, va_list argptr){
4885d94d3cafS[email protected]     if (!hci_can_send_command_packet_now()){
48869d14b626S[email protected]         log_error("hci_send_cmd called but cannot send packet now");
48879d14b626S[email protected]         return 0;
48889d14b626S[email protected]     }
48899d14b626S[email protected] 
48905127cc62S[email protected]     // for HCI INITIALIZATION
48919da54300S[email protected]     // log_info("hci_send_cmd: opcode %04x", cmd->opcode);
48925127cc62S[email protected]     hci_stack->last_cmd_opcode = cmd->opcode;
48935127cc62S[email protected] 
48949d14b626S[email protected]     hci_reserve_packet_buffer();
48959d14b626S[email protected]     uint8_t * packet = hci_stack->hci_packet_buffer;
489694be1a66SMatthias Ringwald     uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr);
4897bfea0222SMatthias Ringwald     int err = hci_send_cmd_packet(packet, size);
4898bfea0222SMatthias Ringwald 
4899593702caSMatthias Ringwald     // release packet buffer on error or for synchronous transport implementations
4900593702caSMatthias Ringwald     if ((err < 0) || hci_transport_synchronous()){
4901e2d22487SMatthias Ringwald         hci_release_packet_buffer();
4902068b8592SMatthias Ringwald         hci_emit_transport_packet_sent();
4903bfea0222SMatthias Ringwald     }
4904bfea0222SMatthias Ringwald 
4905bfea0222SMatthias Ringwald     return err;
490694be1a66SMatthias Ringwald }
49079d14b626S[email protected] 
490894be1a66SMatthias Ringwald /**
490994be1a66SMatthias Ringwald  * pre: numcmds >= 0 - it's allowed to send a command to the controller
491094be1a66SMatthias Ringwald  */
491194be1a66SMatthias Ringwald int hci_send_cmd(const hci_cmd_t *cmd, ...){
49121cd208adSmatthias.ringwald     va_list argptr;
49131cd208adSmatthias.ringwald     va_start(argptr, cmd);
491494be1a66SMatthias Ringwald     int res = hci_send_cmd_va_arg(cmd, argptr);
49151cd208adSmatthias.ringwald     va_end(argptr);
491694be1a66SMatthias Ringwald     return res;
491793b8dc03Smatthias.ringwald }
4918c8e4258aSmatthias.ringwald 
4919ee091cf1Smatthias.ringwald // Create various non-HCI events.
4920ee091cf1Smatthias.ringwald // TODO: generalize, use table similar to hci_create_command
4921ee091cf1Smatthias.ringwald 
4922d6b06661SMatthias Ringwald static void hci_emit_event(uint8_t * event, uint16_t size, int dump){
4923fb37a842SMatthias Ringwald     // dump packet
4924d6b06661SMatthias Ringwald     if (dump) {
4925300c1ba4SMatthias Ringwald         hci_dump_packet( HCI_EVENT_PACKET, 0, event, size);
4926d6b06661SMatthias Ringwald     }
49271ef6bb52SMatthias Ringwald 
4928fb37a842SMatthias Ringwald     // dispatch to all event handlers
49291ef6bb52SMatthias Ringwald     btstack_linked_list_iterator_t it;
49301ef6bb52SMatthias Ringwald     btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers);
49311ef6bb52SMatthias Ringwald     while (btstack_linked_list_iterator_has_next(&it)){
49321ef6bb52SMatthias Ringwald         btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it);
4933d9a7306aSMatthias Ringwald         entry->callback(HCI_EVENT_PACKET, 0, event, size);
49341ef6bb52SMatthias Ringwald     }
4935d6b06661SMatthias Ringwald }
4936d6b06661SMatthias Ringwald 
4937d6b06661SMatthias Ringwald static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){
4938fb37a842SMatthias Ringwald     if (!hci_stack->acl_packet_handler) return;
49393d50b4baSMatthias Ringwald     hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size);
4940d6b06661SMatthias Ringwald }
4941d6b06661SMatthias Ringwald 
494235454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
4943701e3307SMatthias Ringwald static void hci_notify_if_sco_can_send_now(void){
49443bc639ceSMatthias Ringwald     // notify SCO sender if waiting
4945701e3307SMatthias Ringwald     if (!hci_stack->sco_waiting_for_can_send_now) return;
4946701e3307SMatthias Ringwald     if (hci_can_send_sco_packet_now()){
49473bc639ceSMatthias Ringwald         hci_stack->sco_waiting_for_can_send_now = 0;
4948701e3307SMatthias Ringwald         uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 };
4949701e3307SMatthias Ringwald         hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event));
49503d50b4baSMatthias Ringwald         hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event));
49513bc639ceSMatthias Ringwald     }
49523bc639ceSMatthias Ringwald }
49531cfb383eSMatthias Ringwald 
49541cfb383eSMatthias Ringwald // parsing end emitting has been merged to reduce code size
49559784dac1SMatthias Ringwald static void gap_inquiry_explode(uint8_t *packet, uint16_t size) {
4956e4f5dd75SMatthias Ringwald     uint8_t event[19+GAP_INQUIRY_MAX_NAME_LEN];
49571cfb383eSMatthias Ringwald 
49581cfb383eSMatthias Ringwald     uint8_t * eir_data;
49591cfb383eSMatthias Ringwald     ad_context_t context;
49601cfb383eSMatthias Ringwald     const uint8_t * name;
49611cfb383eSMatthias Ringwald     uint8_t         name_len;
49621cfb383eSMatthias Ringwald 
49639784dac1SMatthias Ringwald     if (size < 3) return;
49649784dac1SMatthias Ringwald 
49651cfb383eSMatthias Ringwald     int event_type = hci_event_packet_get_type(packet);
4966a1df452eSMatthias Ringwald     int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1;    // 2 for old event, 1 otherwise
49671cfb383eSMatthias Ringwald     int num_responses       = hci_event_inquiry_result_get_num_responses(packet);
49681cfb383eSMatthias Ringwald 
49699784dac1SMatthias Ringwald     switch (event_type){
49709784dac1SMatthias Ringwald         case HCI_EVENT_INQUIRY_RESULT:
49719784dac1SMatthias Ringwald         case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI:
49729784dac1SMatthias Ringwald             if (size != (3 + (num_responses * 14))) return;
49739784dac1SMatthias Ringwald             break;
49749784dac1SMatthias Ringwald         case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE:
49759784dac1SMatthias Ringwald             if (size != 257) return;
49769784dac1SMatthias Ringwald             if (num_responses != 1) return;
49779784dac1SMatthias Ringwald             break;
49789784dac1SMatthias Ringwald         default:
49799784dac1SMatthias Ringwald             return;
49809784dac1SMatthias Ringwald     }
49819784dac1SMatthias Ringwald 
49821cfb383eSMatthias Ringwald     // event[1] is set at the end
49831cfb383eSMatthias Ringwald     int i;
49841cfb383eSMatthias Ringwald     for (i=0; i<num_responses;i++){
49851cfb383eSMatthias Ringwald         memset(event, 0, sizeof(event));
49861cfb383eSMatthias Ringwald         event[0] = GAP_EVENT_INQUIRY_RESULT;
49871cfb383eSMatthias Ringwald         uint8_t event_size = 18;    // if name is not set by EIR
49881cfb383eSMatthias Ringwald 
49896535961aSMatthias Ringwald         (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr
49900e588213SMatthias Ringwald         event[8] =          packet[3 + (num_responses*(6))                         + (i*1)];     // page_scan_repetition_mode
49916535961aSMatthias Ringwald         (void)memcpy(&event[9],
49926535961aSMatthias Ringwald                      &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)],
49936535961aSMatthias Ringwald                      3); // class of device
49946535961aSMatthias Ringwald         (void)memcpy(&event[12],
49956535961aSMatthias Ringwald                      &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)],
49966535961aSMatthias Ringwald                      2); // clock offset
49971cfb383eSMatthias Ringwald 
49981cfb383eSMatthias Ringwald         switch (event_type){
49991cfb383eSMatthias Ringwald             case HCI_EVENT_INQUIRY_RESULT:
50001cfb383eSMatthias Ringwald                 // 14,15,16,17 = 0, size 18
50011cfb383eSMatthias Ringwald                 break;
50021cfb383eSMatthias Ringwald             case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI:
50031cfb383eSMatthias Ringwald                 event[14] = 1;
5004a1df452eSMatthias Ringwald                 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi
50051cfb383eSMatthias Ringwald                 // 16,17 = 0, size 18
50061cfb383eSMatthias Ringwald                 break;
50071cfb383eSMatthias Ringwald             case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE:
50081cfb383eSMatthias Ringwald                 event[14] = 1;
5009a1df452eSMatthias Ringwald                 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi
501079186815SMatthias Ringwald                 // EIR packets only contain a single inquiry response
50111cfb383eSMatthias Ringwald                 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)];
50121cfb383eSMatthias Ringwald                 name = NULL;
5013a8c4e5adSMatthias Ringwald                 // Iterate over EIR data
5014a8c4e5adSMatthias Ringwald                 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){
50151cfb383eSMatthias Ringwald                     uint8_t data_type    = ad_iterator_get_data_type(&context);
50161cfb383eSMatthias Ringwald                     uint8_t data_size    = ad_iterator_get_data_len(&context);
50171cfb383eSMatthias Ringwald                     const uint8_t * data = ad_iterator_get_data(&context);
50181cfb383eSMatthias Ringwald                     // Prefer Complete Local Name over Shortend Local Name
50191cfb383eSMatthias Ringwald                     switch (data_type){
50201cfb383eSMatthias Ringwald                         case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME:
50211cfb383eSMatthias Ringwald                             if (name) continue;
5022cf373d3aSMatthias Ringwald                             /* fall through */
50231cfb383eSMatthias Ringwald                         case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME:
50241cfb383eSMatthias Ringwald                             name = data;
50251cfb383eSMatthias Ringwald                             name_len = data_size;
50261cfb383eSMatthias Ringwald                             break;
50271cfb383eSMatthias Ringwald                         default:
50281cfb383eSMatthias Ringwald                             break;
50291cfb383eSMatthias Ringwald                     }
50301cfb383eSMatthias Ringwald                 }
50311cfb383eSMatthias Ringwald                 if (name){
50321cfb383eSMatthias Ringwald                     event[16] = 1;
50331cfb383eSMatthias Ringwald                     // truncate name if needed
50341cfb383eSMatthias Ringwald                     int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN);
50351cfb383eSMatthias Ringwald                     event[17] = len;
50366535961aSMatthias Ringwald                     (void)memcpy(&event[18], name, len);
50371cfb383eSMatthias Ringwald                     event_size += len;
50381cfb383eSMatthias Ringwald                 }
50391cfb383eSMatthias Ringwald                 break;
50407bbeb3adSMilanka Ringwald             default:
50417bbeb3adSMilanka Ringwald                 return;
50421cfb383eSMatthias Ringwald         }
50431cfb383eSMatthias Ringwald         event[1] = event_size - 2;
50441cfb383eSMatthias Ringwald         hci_emit_event(event, event_size, 1);
50451cfb383eSMatthias Ringwald     }
50461cfb383eSMatthias Ringwald }
504735454696SMatthias Ringwald #endif
50483bc639ceSMatthias Ringwald 
504971de195eSMatthias Ringwald void hci_emit_state(void){
50503a9fb326S[email protected]     log_info("BTSTACK_EVENT_STATE %u", hci_stack->state);
5051425d1371Smatthias.ringwald     uint8_t event[3];
505280d52d6bSmatthias.ringwald     event[0] = BTSTACK_EVENT_STATE;
50534ea43905SMatthias Ringwald     event[1] = sizeof(event) - 2u;
50543a9fb326S[email protected]     event[2] = hci_stack->state;
5055d6b06661SMatthias Ringwald     hci_emit_event(event, sizeof(event), 1);
5056c8e4258aSmatthias.ringwald }
5057c8e4258aSmatthias.ringwald 
505835454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
50592deddeceSMatthias Ringwald static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){
5060425d1371Smatthias.ringwald     uint8_t event[13];
5061c8e4258aSmatthias.ringwald     event[0] = HCI_EVENT_CONNECTION_COMPLETE;
5062425d1371Smatthias.ringwald     event[1] = sizeof(event) - 2;
506317f1ba2aSmatthias.ringwald     event[2] = status;
50642deddeceSMatthias Ringwald     little_endian_store_16(event, 3, con_handle);
50652deddeceSMatthias Ringwald     reverse_bd_addr(address, &event[5]);
5066c8e4258aSmatthias.ringwald     event[11] = 1; // ACL connection
5067c8e4258aSmatthias.ringwald     event[12] = 0; // encryption disabled
5068d6b06661SMatthias Ringwald     hci_emit_event(event, sizeof(event), 1);
5069c8e4258aSmatthias.ringwald }
507052db98b2SMatthias Ringwald static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){
507152db98b2SMatthias Ringwald     if (disable_l2cap_timeouts) return;
507252db98b2SMatthias Ringwald     log_info("L2CAP_EVENT_TIMEOUT_CHECK");
507352db98b2SMatthias Ringwald     uint8_t event[4];
507452db98b2SMatthias Ringwald     event[0] = L2CAP_EVENT_TIMEOUT_CHECK;
507552db98b2SMatthias Ringwald     event[1] = sizeof(event) - 2;
507652db98b2SMatthias Ringwald     little_endian_store_16(event, 2, conn->con_handle);
507752db98b2SMatthias Ringwald     hci_emit_event(event, sizeof(event), 1);
507852db98b2SMatthias Ringwald }
507935454696SMatthias Ringwald #endif
5080c8e4258aSmatthias.ringwald 
508135454696SMatthias Ringwald #ifdef ENABLE_BLE
5082d70217a2SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
5083667ba9d1SMatthias Ringwald 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){
50844f3229d8S[email protected]     uint8_t event[21];
50854f3229d8S[email protected]     event[0] = HCI_EVENT_LE_META;
50864ea43905SMatthias Ringwald     event[1] = sizeof(event) - 2u;
50874f3229d8S[email protected]     event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE;
50884f3229d8S[email protected]     event[3] = status;
5089fc64f94aSMatthias Ringwald     little_endian_store_16(event, 4, con_handle);
50904f3229d8S[email protected]     event[6] = 0; // TODO: role
50916e2e9a6bS[email protected]     event[7] = address_type;
5092724d70a2SMatthias Ringwald     reverse_bd_addr(address, &event[8]);
5093f8fbdce0SMatthias Ringwald     little_endian_store_16(event, 14, 0); // interval
5094f8fbdce0SMatthias Ringwald     little_endian_store_16(event, 16, 0); // latency
5095f8fbdce0SMatthias Ringwald     little_endian_store_16(event, 18, 0); // supervision timeout
50964f3229d8S[email protected]     event[20] = 0; // master clock accuracy
5097d6b06661SMatthias Ringwald     hci_emit_event(event, sizeof(event), 1);
50984f3229d8S[email protected] }
509935454696SMatthias Ringwald #endif
5100d70217a2SMatthias Ringwald #endif
51014f3229d8S[email protected] 
5102fd43c0e0SMatthias Ringwald static void hci_emit_transport_packet_sent(void){
5103fd43c0e0SMatthias Ringwald     // notify upper stack that it might be possible to send again
5104fd43c0e0SMatthias Ringwald     uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0};
5105fd43c0e0SMatthias Ringwald     hci_emit_event(&event[0], sizeof(event), 0);  // don't dump
5106fd43c0e0SMatthias Ringwald }
5107fd43c0e0SMatthias Ringwald 
5108fc64f94aSMatthias Ringwald static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){
5109425d1371Smatthias.ringwald     uint8_t event[6];
51103c4d4b90Smatthias.ringwald     event[0] = HCI_EVENT_DISCONNECTION_COMPLETE;
51114ea43905SMatthias Ringwald     event[1] = sizeof(event) - 2u;
51123c4d4b90Smatthias.ringwald     event[2] = 0; // status = OK
5113fc64f94aSMatthias Ringwald     little_endian_store_16(event, 3, con_handle);
51143c4d4b90Smatthias.ringwald     event[5] = reason;
5115d6b06661SMatthias Ringwald     hci_emit_event(event, sizeof(event), 1);
51163c4d4b90Smatthias.ringwald }
51173c4d4b90Smatthias.ringwald 
5118b83d5eabSMatthias Ringwald static void hci_emit_nr_connections_changed(void){
5119e0abb8e7S[email protected]     log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections());
5120425d1371Smatthias.ringwald     uint8_t event[3];
512180d52d6bSmatthias.ringwald     event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED;
51224ea43905SMatthias Ringwald     event[1] = sizeof(event) - 2u;
512343bfb1bdSmatthias.ringwald     event[2] = nr_hci_connections();
5124d6b06661SMatthias Ringwald     hci_emit_event(event, sizeof(event), 1);
512543bfb1bdSmatthias.ringwald }
5126038bc64cSmatthias.ringwald 
5127b83d5eabSMatthias Ringwald static void hci_emit_hci_open_failed(void){
5128e0abb8e7S[email protected]     log_info("BTSTACK_EVENT_POWERON_FAILED");
5129425d1371Smatthias.ringwald     uint8_t event[2];
513080d52d6bSmatthias.ringwald     event[0] = BTSTACK_EVENT_POWERON_FAILED;
51314ea43905SMatthias Ringwald     event[1] = sizeof(event) - 2u;
5132d6b06661SMatthias Ringwald     hci_emit_event(event, sizeof(event), 1);
5133038bc64cSmatthias.ringwald }
51341b0e3922Smatthias.ringwald 
513535454696SMatthias Ringwald static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){
513635454696SMatthias Ringwald     log_info("hci_emit_dedicated_bonding_result %u ", status);
513735454696SMatthias Ringwald     uint8_t event[9];
513835454696SMatthias Ringwald     int pos = 0;
513935454696SMatthias Ringwald     event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED;
51404ea43905SMatthias Ringwald     event[pos++] = sizeof(event) - 2u;
514135454696SMatthias Ringwald     event[pos++] = status;
514235454696SMatthias Ringwald     reverse_bd_addr(address, &event[pos]);
5143d6b06661SMatthias Ringwald     hci_emit_event(event, sizeof(event), 1);
5144381fbed8Smatthias.ringwald }
5145458bf4e8S[email protected] 
514635454696SMatthias Ringwald 
514735454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
514835454696SMatthias Ringwald 
5149b83d5eabSMatthias Ringwald static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){
5150df3354fcS[email protected]     log_info("hci_emit_security_level %u for handle %x", level, con_handle);
5151a00031e2S[email protected]     uint8_t event[5];
5152e00caf9cS[email protected]     int pos = 0;
51535611a760SMatthias Ringwald     event[pos++] = GAP_EVENT_SECURITY_LEVEL;
5154e00caf9cS[email protected]     event[pos++] = sizeof(event) - 2;
5155f8fbdce0SMatthias Ringwald     little_endian_store_16(event, 2, con_handle);
5156e00caf9cS[email protected]     pos += 2;
5157e00caf9cS[email protected]     event[pos++] = level;
5158d6b06661SMatthias Ringwald     hci_emit_event(event, sizeof(event), 1);
5159e00caf9cS[email protected] }
5160e00caf9cS[email protected] 
516135454696SMatthias Ringwald static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){
516235454696SMatthias Ringwald     if (!connection) return LEVEL_0;
516335454696SMatthias Ringwald     if ((connection->authentication_flags & CONNECTION_ENCRYPTED) == 0) return LEVEL_0;
5164abdad579SMatthias Ringwald     if ((connection->authentication_flags & CONNECTION_AUTHENTICATED) == 0) return LEVEL_0;
5165170fafaeSMatthias Ringwald     if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0;
51664051b7ffSMatthias Ringwald     gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type);
5167170fafaeSMatthias Ringwald     // LEVEL 4 always requires 128 bit encrytion key size
51680e588213SMatthias Ringwald     if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){
5169170fafaeSMatthias Ringwald         security_level = LEVEL_3;
5170170fafaeSMatthias Ringwald     }
5171170fafaeSMatthias Ringwald     return security_level;
517235454696SMatthias Ringwald }
517335454696SMatthias Ringwald 
517435454696SMatthias Ringwald static void hci_emit_discoverable_enabled(uint8_t enabled){
517535454696SMatthias Ringwald     log_info("BTSTACK_EVENT_DISCOVERABLE_ENABLED %u", enabled);
517635454696SMatthias Ringwald     uint8_t event[3];
517735454696SMatthias Ringwald     event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED;
517835454696SMatthias Ringwald     event[1] = sizeof(event) - 2;
517935454696SMatthias Ringwald     event[2] = enabled;
5180d6b06661SMatthias Ringwald     hci_emit_event(event, sizeof(event), 1);
5181ad83dc6aS[email protected] }
5182ad83dc6aS[email protected] 
518398a2fd1cSMatthias Ringwald // query if remote side supports eSCO
5184073bd0faSMatthias Ringwald int hci_remote_esco_supported(hci_con_handle_t con_handle){
518598a2fd1cSMatthias Ringwald     hci_connection_t * connection = hci_connection_for_handle(con_handle);
518698a2fd1cSMatthias Ringwald     if (!connection) return 0;
518776ccfb2aSMatthias Ringwald     return (connection->remote_supported_features[0] & 1) != 0;
518898a2fd1cSMatthias Ringwald }
518998a2fd1cSMatthias Ringwald 
519067aae551SMatthias Ringwald static bool hci_ssp_supported(hci_connection_t * connection){
519167aae551SMatthias Ringwald     const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST;
519267aae551SMatthias Ringwald     return (connection->bonding_flags & mask) == mask;
519367aae551SMatthias Ringwald }
519467aae551SMatthias Ringwald 
51952bd8b7e7S[email protected] // query if remote side supports SSP
51962bd8b7e7S[email protected] int hci_remote_ssp_supported(hci_con_handle_t con_handle){
51972bd8b7e7S[email protected]     hci_connection_t * connection = hci_connection_for_handle(con_handle);
51982bd8b7e7S[email protected]     if (!connection) return 0;
519967aae551SMatthias Ringwald     return hci_ssp_supported(connection) ? 1 : 0;
52002bd8b7e7S[email protected] }
52012bd8b7e7S[email protected] 
520215a95bd5SMatthias Ringwald int gap_ssp_supported_on_both_sides(hci_con_handle_t handle){
5203df3354fcS[email protected]     return hci_local_ssp_activated() && hci_remote_ssp_supported(handle);
5204df3354fcS[email protected] }
5205df3354fcS[email protected] 
5206458bf4e8S[email protected] // GAP API
5207458bf4e8S[email protected] /**
5208458bf4e8S[email protected]  * @bbrief enable/disable bonding. default is enabled
5209458bf4e8S[email protected]  * @praram enabled
5210458bf4e8S[email protected]  */
52114c57c146S[email protected] void gap_set_bondable_mode(int enable){
52123a9fb326S[email protected]     hci_stack->bondable = enable ? 1 : 0;
5213458bf4e8S[email protected] }
52144ef6443cSMatthias Ringwald /**
52154ef6443cSMatthias Ringwald  * @brief Get bondable mode.
52164ef6443cSMatthias Ringwald  * @return 1 if bondable
52174ef6443cSMatthias Ringwald  */
52184ef6443cSMatthias Ringwald int gap_get_bondable_mode(void){
52194ef6443cSMatthias Ringwald     return hci_stack->bondable;
52204ef6443cSMatthias Ringwald }
5221cb230b9dS[email protected] 
5222cb230b9dS[email protected] /**
522334d2123cS[email protected]  * @brief map link keys to security levels
5224cb230b9dS[email protected]  */
522534d2123cS[email protected] gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){
522634d2123cS[email protected]     switch (link_key_type){
52273c68dfa9S[email protected]         case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256:
52283c68dfa9S[email protected]             return LEVEL_4;
52293c68dfa9S[email protected]         case COMBINATION_KEY:
52303c68dfa9S[email protected]         case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192:
52313c68dfa9S[email protected]             return LEVEL_3;
52323c68dfa9S[email protected]         default:
52333c68dfa9S[email protected]             return LEVEL_2;
52343c68dfa9S[email protected]     }
5235cb230b9dS[email protected] }
5236cb230b9dS[email protected] 
52378b35e16aSMatthias Ringwald /**
52388b35e16aSMatthias Ringwald  * @brief map link keys to secure connection yes/no
52398b35e16aSMatthias Ringwald  */
52408b35e16aSMatthias Ringwald int gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){
52418b35e16aSMatthias Ringwald     switch (link_key_type){
52428b35e16aSMatthias Ringwald         case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256:
52438b35e16aSMatthias Ringwald         case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256:
52448b35e16aSMatthias Ringwald             return 1;
52458b35e16aSMatthias Ringwald         default:
52468b35e16aSMatthias Ringwald             return 0;
52478b35e16aSMatthias Ringwald     }
52488b35e16aSMatthias Ringwald }
52498b35e16aSMatthias Ringwald 
52508b35e16aSMatthias Ringwald /**
52518b35e16aSMatthias Ringwald  * @brief map link keys to authenticated
52528b35e16aSMatthias Ringwald  */
52538b35e16aSMatthias Ringwald int gap_authenticated_for_link_key_type(link_key_type_t link_key_type){
52548b35e16aSMatthias Ringwald     switch (link_key_type){
52558b35e16aSMatthias Ringwald         case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256:
52568b35e16aSMatthias Ringwald         case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192:
52578b35e16aSMatthias Ringwald             return 1;
52588b35e16aSMatthias Ringwald         default:
52598b35e16aSMatthias Ringwald             return 0;
52608b35e16aSMatthias Ringwald     }
52618b35e16aSMatthias Ringwald }
52628b35e16aSMatthias Ringwald 
5263106d6d11S[email protected] int gap_mitm_protection_required_for_security_level(gap_security_level_t level){
52645127cc62S[email protected]     log_info("gap_mitm_protection_required_for_security_level %u", level);
5265106d6d11S[email protected]     return level > LEVEL_2;
5266106d6d11S[email protected] }
5267106d6d11S[email protected] 
526834d2123cS[email protected] /**
526934d2123cS[email protected]  * @brief get current security level
527034d2123cS[email protected]  */
527134d2123cS[email protected] gap_security_level_t gap_security_level(hci_con_handle_t con_handle){
527234d2123cS[email protected]     hci_connection_t * connection = hci_connection_for_handle(con_handle);
527334d2123cS[email protected]     if (!connection) return LEVEL_0;
527434d2123cS[email protected]     return gap_security_level_for_connection(connection);
527534d2123cS[email protected] }
527634d2123cS[email protected] 
5277cb230b9dS[email protected] /**
5278cb230b9dS[email protected]  * @brief request connection to device to
5279cb230b9dS[email protected]  * @result GAP_AUTHENTICATION_RESULT
5280cb230b9dS[email protected]  */
528134d2123cS[email protected] void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){
528234d2123cS[email protected]     hci_connection_t * connection = hci_connection_for_handle(con_handle);
528334d2123cS[email protected]     if (!connection){
5284a00031e2S[email protected]         hci_emit_security_level(con_handle, LEVEL_0);
528534d2123cS[email protected]         return;
528634d2123cS[email protected]     }
5287defbf200SMatthias Ringwald 
5288defbf200SMatthias Ringwald     btstack_assert(hci_is_le_connection(connection) == false);
5289defbf200SMatthias Ringwald 
529034d2123cS[email protected]     gap_security_level_t current_level = gap_security_level(con_handle);
529183d08d7cSMatthias Ringwald     log_info("gap_request_security_level requested level %u, planned level %u, current level %u",
529283d08d7cSMatthias Ringwald         requested_level, connection->requested_security_level, current_level);
529383d08d7cSMatthias Ringwald 
529483d08d7cSMatthias Ringwald     // assumption: earlier requested security higher than current level => security request is active
529583d08d7cSMatthias Ringwald     if (current_level < connection->requested_security_level){
529683d08d7cSMatthias Ringwald         if (connection->requested_security_level < requested_level){
529783d08d7cSMatthias Ringwald             // increase requested level as new level is higher
529883d08d7cSMatthias Ringwald 
529983d08d7cSMatthias Ringwald             // TODO: handle re-authentication when done
530083d08d7cSMatthias Ringwald 
530183d08d7cSMatthias Ringwald             connection->requested_security_level = requested_level;
530283d08d7cSMatthias Ringwald         }
530383d08d7cSMatthias Ringwald         return;
530483d08d7cSMatthias Ringwald     }
530583d08d7cSMatthias Ringwald 
530683d08d7cSMatthias Ringwald     // no request active, notify if security sufficient
530783d08d7cSMatthias Ringwald     if (requested_level <= current_level){
5308a00031e2S[email protected]         hci_emit_security_level(con_handle, current_level);
530934d2123cS[email protected]         return;
531034d2123cS[email protected]     }
5311a00031e2S[email protected] 
5312e060c07dSMatthias Ringwald     // store request
531334d2123cS[email protected]     connection->requested_security_level = requested_level;
5314a00031e2S[email protected] 
5315e060c07dSMatthias Ringwald     // start to authenticate connection if authentication not already active
5316abdad579SMatthias Ringwald     if ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return;
53171eb2563eS[email protected]     connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST;
5318e80b2cf9S[email protected]     hci_run();
5319e00caf9cS[email protected] }
5320ad83dc6aS[email protected] 
5321ad83dc6aS[email protected] /**
5322ad83dc6aS[email protected]  * @brief start dedicated bonding with device. disconnect after bonding
5323ad83dc6aS[email protected]  * @param device
5324ad83dc6aS[email protected]  * @param request MITM protection
5325ad83dc6aS[email protected]  * @result GAP_DEDICATED_BONDING_COMPLETE
5326ad83dc6aS[email protected]  */
5327ad83dc6aS[email protected] int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){
5328ad83dc6aS[email protected] 
5329ad83dc6aS[email protected]     // create connection state machine
5330f16129ceSMatthias Ringwald     hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL);
5331ad83dc6aS[email protected] 
5332ad83dc6aS[email protected]     if (!connection){
5333ad83dc6aS[email protected]         return BTSTACK_MEMORY_ALLOC_FAILED;
5334ad83dc6aS[email protected]     }
5335ad83dc6aS[email protected] 
5336ad83dc6aS[email protected]     // delete linkn key
533715a95bd5SMatthias Ringwald     gap_drop_link_key_for_bd_addr(device);
5338ad83dc6aS[email protected] 
5339ad83dc6aS[email protected]     // configure LEVEL_2/3, dedicated bonding
5340ad83dc6aS[email protected]     connection->state = SEND_CREATE_CONNECTION;
5341ad83dc6aS[email protected]     connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2;
5342f04a0c31SMatthias Ringwald     log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level);
5343ad83dc6aS[email protected]     connection->bonding_flags = BONDING_DEDICATED;
5344ad83dc6aS[email protected] 
5345ad83dc6aS[email protected]     // wait for GAP Security Result and send GAP Dedicated Bonding complete
5346ad83dc6aS[email protected] 
5347ad83dc6aS[email protected]     // handle: connnection failure (connection complete != ok)
5348ad83dc6aS[email protected]     // handle: authentication failure
5349ad83dc6aS[email protected]     // handle: disconnect on done
5350ad83dc6aS[email protected] 
5351ad83dc6aS[email protected]     hci_run();
5352ad83dc6aS[email protected] 
5353ad83dc6aS[email protected]     return 0;
5354ad83dc6aS[email protected] }
535535454696SMatthias Ringwald #endif
53568e618f72S[email protected] 
53578e618f72S[email protected] void gap_set_local_name(const char * local_name){
53588e618f72S[email protected]     hci_stack->local_name = local_name;
53598e618f72S[email protected] }
53608e618f72S[email protected] 
536135454696SMatthias Ringwald 
536235454696SMatthias Ringwald #ifdef ENABLE_BLE
536335454696SMatthias Ringwald 
5364d70217a2SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
5365d8e8f12aSMatthias Ringwald void gap_start_scan(void){
5366fde725feSMatthias Ringwald     hci_stack->le_scanning_enabled = true;
53677bdc6798S[email protected]     hci_run();
53687bdc6798S[email protected] }
53698e618f72S[email protected] 
5370d8e8f12aSMatthias Ringwald void gap_stop_scan(void){
5371fde725feSMatthias Ringwald     hci_stack->le_scanning_enabled = false;
53727bdc6798S[email protected]     hci_run();
53737bdc6798S[email protected] }
53744f3229d8S[email protected] 
5375a7a719e9SMatthias Ringwald void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){
5376ef11999fSmatthias.ringwald     hci_stack->le_scan_type          = scan_type;
5377a7a719e9SMatthias Ringwald     hci_stack->le_scan_filter_policy = scanning_filter_policy;
5378ef11999fSmatthias.ringwald     hci_stack->le_scan_interval      = scan_interval;
5379ef11999fSmatthias.ringwald     hci_stack->le_scan_window        = scan_window;
53808b69e4c7SMatthias Ringwald     hci_stack->le_scanning_param_update = true;
5381ef11999fSmatthias.ringwald     hci_run();
5382ef11999fSmatthias.ringwald }
53834f3229d8S[email protected] 
5384a7a719e9SMatthias Ringwald void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){
5385a7a719e9SMatthias Ringwald     gap_set_scan_params(scan_type, scan_interval, scan_window, 0);
5386a7a719e9SMatthias Ringwald }
5387a7a719e9SMatthias Ringwald 
5388667ba9d1SMatthias Ringwald uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){
53894f3229d8S[email protected]     hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type);
53904f3229d8S[email protected]     if (!conn){
5391d32b3f05SMatthias Ringwald         // disallow if le connection is already outgoing
5392d32b3f05SMatthias Ringwald         if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){
5393d32b3f05SMatthias Ringwald             log_error("le connection already active");
5394d32b3f05SMatthias Ringwald             return ERROR_CODE_COMMAND_DISALLOWED;
5395d32b3f05SMatthias Ringwald         }
5396d32b3f05SMatthias Ringwald 
5397d8e8f12aSMatthias Ringwald         log_info("gap_connect: no connection exists yet, creating context");
53982e77e513S[email protected]         conn = create_connection_for_bd_addr_and_type(addr, addr_type);
53994f3229d8S[email protected]         if (!conn){
54004f3229d8S[email protected]             // notify client that alloc failed
54016e2e9a6bS[email protected]             hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED);
5402d8e8f12aSMatthias Ringwald             log_info("gap_connect: failed to alloc hci_connection_t");
5403472a5742SMatthias Ringwald             return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller
54044f3229d8S[email protected]         }
5405d5b1a89eSMatthias Ringwald 
5406d5b1a89eSMatthias Ringwald         // set le connecting state
5407d5b1a89eSMatthias Ringwald         if (hci_is_le_connection_type(addr_type)){
5408d5b1a89eSMatthias Ringwald             hci_stack->le_connecting_request = LE_CONNECTING_DIRECT;
5409d5b1a89eSMatthias Ringwald         }
5410d5b1a89eSMatthias Ringwald 
54114f3229d8S[email protected]         conn->state = SEND_CREATE_CONNECTION;
5412d8e8f12aSMatthias Ringwald         log_info("gap_connect: send create connection next");
5413564fca32S[email protected]         hci_run();
5414b0136355SMatthias Ringwald         return ERROR_CODE_SUCCESS;
54154f3229d8S[email protected]     }
54160bf6344aS[email protected] 
54170bf6344aS[email protected]     if (!hci_is_le_connection(conn) ||
5418a1df452eSMatthias Ringwald         (conn->state == SEND_CREATE_CONNECTION) ||
54190e588213SMatthias Ringwald         (conn->state == SENT_CREATE_CONNECTION)) {
54202e77e513S[email protected]         hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED);
5421d8e8f12aSMatthias Ringwald         log_error("gap_connect: classic connection or connect is already being created");
5422616edd56SMatthias Ringwald         return GATT_CLIENT_IN_WRONG_STATE;
54230bf6344aS[email protected]     }
54240bf6344aS[email protected] 
5425b0136355SMatthias Ringwald     // check if connection was just disconnected
5426b0136355SMatthias Ringwald     if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){
5427b0136355SMatthias Ringwald         log_info("gap_connect: send create connection (again)");
5428b0136355SMatthias Ringwald         conn->state = SEND_CREATE_CONNECTION;
5429b0136355SMatthias Ringwald         hci_run();
5430b0136355SMatthias Ringwald         return ERROR_CODE_SUCCESS;
5431b0136355SMatthias Ringwald     }
5432b0136355SMatthias Ringwald 
5433d8e8f12aSMatthias Ringwald     log_info("gap_connect: context exists with state %u", conn->state);
5434d5b1a89eSMatthias Ringwald     hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS);
54354f3229d8S[email protected]     hci_run();
5436b0136355SMatthias Ringwald     return ERROR_CODE_SUCCESS;
54374f3229d8S[email protected] }
54384f3229d8S[email protected] 
54397851196eSmatthias.ringwald // @assumption: only a single outgoing LE Connection exists
5440d8e8f12aSMatthias Ringwald static hci_connection_t * gap_get_outgoing_connection(void){
5441665d90f2SMatthias Ringwald     btstack_linked_item_t *it;
5442a0da043fSMatthias Ringwald     for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){
54430bf6344aS[email protected]         hci_connection_t * conn = (hci_connection_t *) it;
54440bf6344aS[email protected]         if (!hci_is_le_connection(conn)) continue;
54450bf6344aS[email protected]         switch (conn->state){
5446a6725849S[email protected]             case SEND_CREATE_CONNECTION:
54477851196eSmatthias.ringwald             case SENT_CREATE_CONNECTION:
54489c77c9dbSMatthias Ringwald             case SENT_CANCEL_CONNECTION:
54497851196eSmatthias.ringwald                 return conn;
54507851196eSmatthias.ringwald             default:
54517851196eSmatthias.ringwald                 break;
54527851196eSmatthias.ringwald         };
54537851196eSmatthias.ringwald     }
54547851196eSmatthias.ringwald     return NULL;
54557851196eSmatthias.ringwald }
54567851196eSmatthias.ringwald 
5457d8e8f12aSMatthias Ringwald uint8_t gap_connect_cancel(void){
5458d8e8f12aSMatthias Ringwald     hci_connection_t * conn = gap_get_outgoing_connection();
5459616edd56SMatthias Ringwald     if (!conn) return 0;
54607851196eSmatthias.ringwald     switch (conn->state){
54617851196eSmatthias.ringwald         case SEND_CREATE_CONNECTION:
54627851196eSmatthias.ringwald             // skip sending create connection and emit event instead
54632e77e513S[email protected]             hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER);
5464665d90f2SMatthias Ringwald             btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn);
54657851196eSmatthias.ringwald             btstack_memory_hci_connection_free( conn );
54660bf6344aS[email protected]             break;
5467a6725849S[email protected]         case SENT_CREATE_CONNECTION:
54687851196eSmatthias.ringwald             // request to send cancel connection
54690bf6344aS[email protected]             conn->state = SEND_CANCEL_CONNECTION;
54700bf6344aS[email protected]             hci_run();
54710bf6344aS[email protected]             break;
54720bf6344aS[email protected]         default:
54730bf6344aS[email protected]             break;
54740bf6344aS[email protected]     }
5475616edd56SMatthias Ringwald     return 0;
5476e31f89a7S[email protected] }
5477d70217a2SMatthias Ringwald #endif
54784f3229d8S[email protected] 
547913e645d2SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
5480c37a3166S[email protected] /**
54816012052bSMatthias Ringwald  * @brief Set connection parameters for outgoing connections
5482cbe54ab2SJakob Krantz  * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms
5483cbe54ab2SJakob Krantz  * @param conn_scan_window (unit: 0.625 msec), default: 30 ms
54846012052bSMatthias Ringwald  * @param conn_interval_min (unit: 1.25ms), default: 10 ms
54856012052bSMatthias Ringwald  * @param conn_interval_max (unit: 1.25ms), default: 30 ms
54866012052bSMatthias Ringwald  * @param conn_latency, default: 4
54876012052bSMatthias Ringwald  * @param supervision_timeout (unit: 10ms), default: 720 ms
54886012052bSMatthias Ringwald  * @param min_ce_length (unit: 0.625ms), default: 10 ms
54896012052bSMatthias Ringwald  * @param max_ce_length (unit: 0.625ms), default: 30 ms
54906012052bSMatthias Ringwald  */
54916012052bSMatthias Ringwald 
5492cbe54ab2SJakob Krantz void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window,
5493cbe54ab2SJakob Krantz     uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency,
5494cbe54ab2SJakob Krantz     uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){
5495cbe54ab2SJakob Krantz     hci_stack->le_connection_scan_interval = conn_scan_interval;
5496cbe54ab2SJakob Krantz     hci_stack->le_connection_scan_window = conn_scan_window;
54976012052bSMatthias Ringwald     hci_stack->le_connection_interval_min = conn_interval_min;
54986012052bSMatthias Ringwald     hci_stack->le_connection_interval_max = conn_interval_max;
54996012052bSMatthias Ringwald     hci_stack->le_connection_latency = conn_latency;
55006012052bSMatthias Ringwald     hci_stack->le_supervision_timeout = supervision_timeout;
55016012052bSMatthias Ringwald     hci_stack->le_minimum_ce_length = min_ce_length;
55026012052bSMatthias Ringwald     hci_stack->le_maximum_ce_length = max_ce_length;
55036012052bSMatthias Ringwald }
550413e645d2SMatthias Ringwald #endif
55056012052bSMatthias Ringwald 
55066012052bSMatthias Ringwald /**
5507c37a3166S[email protected]  * @brief Updates the connection parameters for a given LE connection
5508c37a3166S[email protected]  * @param handle
5509c37a3166S[email protected]  * @param conn_interval_min (unit: 1.25ms)
5510c37a3166S[email protected]  * @param conn_interval_max (unit: 1.25ms)
5511c37a3166S[email protected]  * @param conn_latency
5512c37a3166S[email protected]  * @param supervision_timeout (unit: 10ms)
5513c37a3166S[email protected]  * @returns 0 if ok
5514c37a3166S[email protected]  */
5515c37a3166S[email protected] int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min,
5516c37a3166S[email protected]     uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){
5517c37a3166S[email protected]     hci_connection_t * connection = hci_connection_for_handle(con_handle);
5518c37a3166S[email protected]     if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
5519c37a3166S[email protected]     connection->le_conn_interval_min = conn_interval_min;
5520c37a3166S[email protected]     connection->le_conn_interval_max = conn_interval_max;
5521c37a3166S[email protected]     connection->le_conn_latency = conn_latency;
5522c37a3166S[email protected]     connection->le_supervision_timeout = supervision_timeout;
552384cf6d83SMatthias Ringwald     connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS;
5524cfc59f1bSMatthias Ringwald     hci_run();
5525c37a3166S[email protected]     return 0;
5526c37a3166S[email protected] }
5527c37a3166S[email protected] 
552845c102fdSMatthias Ringwald /**
5529b68d7bc3SMatthias Ringwald  * @brief Request an update of the connection parameter for a given LE connection
5530b68d7bc3SMatthias Ringwald  * @param handle
5531b68d7bc3SMatthias Ringwald  * @param conn_interval_min (unit: 1.25ms)
5532b68d7bc3SMatthias Ringwald  * @param conn_interval_max (unit: 1.25ms)
5533b68d7bc3SMatthias Ringwald  * @param conn_latency
5534b68d7bc3SMatthias Ringwald  * @param supervision_timeout (unit: 10ms)
5535b68d7bc3SMatthias Ringwald  * @returns 0 if ok
5536b68d7bc3SMatthias Ringwald  */
5537b68d7bc3SMatthias Ringwald int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min,
5538b68d7bc3SMatthias Ringwald     uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){
5539b68d7bc3SMatthias Ringwald     hci_connection_t * connection = hci_connection_for_handle(con_handle);
5540b68d7bc3SMatthias Ringwald     if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
5541b68d7bc3SMatthias Ringwald     connection->le_conn_interval_min = conn_interval_min;
5542b68d7bc3SMatthias Ringwald     connection->le_conn_interval_max = conn_interval_max;
5543b68d7bc3SMatthias Ringwald     connection->le_conn_latency = conn_latency;
5544b68d7bc3SMatthias Ringwald     connection->le_supervision_timeout = supervision_timeout;
5545b68d7bc3SMatthias Ringwald     connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST;
554609c9c963SMatthias Ringwald     uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0};
554709c9c963SMatthias Ringwald     hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0);
5548b68d7bc3SMatthias Ringwald     return 0;
5549b68d7bc3SMatthias Ringwald }
5550b68d7bc3SMatthias Ringwald 
5551d70217a2SMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
5552d70217a2SMatthias Ringwald 
5553b68d7bc3SMatthias Ringwald /**
555445c102fdSMatthias Ringwald  * @brief Set Advertisement Data
555545c102fdSMatthias Ringwald  * @param advertising_data_length
555645c102fdSMatthias Ringwald  * @param advertising_data (max 31 octets)
555745c102fdSMatthias Ringwald  * @note data is not copied, pointer has to stay valid
555845c102fdSMatthias Ringwald  */
555945c102fdSMatthias Ringwald void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){
556045c102fdSMatthias Ringwald     hci_stack->le_advertisements_data_len = advertising_data_length;
556145c102fdSMatthias Ringwald     hci_stack->le_advertisements_data = advertising_data;
5562501f56b3SMatthias Ringwald     hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA;
5563bbc366e6SMatthias Ringwald     hci_run();
556445c102fdSMatthias Ringwald }
5565501f56b3SMatthias Ringwald 
5566501f56b3SMatthias Ringwald /**
5567501f56b3SMatthias Ringwald  * @brief Set Scan Response Data
5568501f56b3SMatthias Ringwald  * @param advertising_data_length
5569501f56b3SMatthias Ringwald  * @param advertising_data (max 31 octets)
5570501f56b3SMatthias Ringwald  * @note data is not copied, pointer has to stay valid
5571501f56b3SMatthias Ringwald  */
5572501f56b3SMatthias Ringwald void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){
5573501f56b3SMatthias Ringwald     hci_stack->le_scan_response_data_len = scan_response_data_length;
5574501f56b3SMatthias Ringwald     hci_stack->le_scan_response_data = scan_response_data;
5575501f56b3SMatthias Ringwald     hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA;
5576bbc366e6SMatthias Ringwald     hci_run();
557745c102fdSMatthias Ringwald }
557845c102fdSMatthias Ringwald 
557945c102fdSMatthias Ringwald /**
558045c102fdSMatthias Ringwald  * @brief Set Advertisement Parameters
558145c102fdSMatthias Ringwald  * @param adv_int_min
558245c102fdSMatthias Ringwald  * @param adv_int_max
558345c102fdSMatthias Ringwald  * @param adv_type
558445c102fdSMatthias Ringwald  * @param direct_address_type
558545c102fdSMatthias Ringwald  * @param direct_address
558645c102fdSMatthias Ringwald  * @param channel_map
558745c102fdSMatthias Ringwald  * @param filter_policy
558845c102fdSMatthias Ringwald  *
558945c102fdSMatthias Ringwald  * @note internal use. use gap_advertisements_set_params from gap_le.h instead.
559045c102fdSMatthias Ringwald  */
559145c102fdSMatthias Ringwald  void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type,
5592b95a5a35SMatthias Ringwald     uint8_t direct_address_typ, bd_addr_t direct_address,
559345c102fdSMatthias Ringwald     uint8_t channel_map, uint8_t filter_policy) {
559445c102fdSMatthias Ringwald 
559545c102fdSMatthias Ringwald     hci_stack->le_advertisements_interval_min = adv_int_min;
559645c102fdSMatthias Ringwald     hci_stack->le_advertisements_interval_max = adv_int_max;
559745c102fdSMatthias Ringwald     hci_stack->le_advertisements_type = adv_type;
559845c102fdSMatthias Ringwald     hci_stack->le_advertisements_direct_address_type = direct_address_typ;
559945c102fdSMatthias Ringwald     hci_stack->le_advertisements_channel_map = channel_map;
560045c102fdSMatthias Ringwald     hci_stack->le_advertisements_filter_policy = filter_policy;
56016535961aSMatthias Ringwald     (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address,
56026535961aSMatthias Ringwald                  6);
560345c102fdSMatthias Ringwald 
560445c102fdSMatthias Ringwald     hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS;
5605bbc366e6SMatthias Ringwald     hci_run();
560645c102fdSMatthias Ringwald  }
560745c102fdSMatthias Ringwald 
560845c102fdSMatthias Ringwald /**
560945c102fdSMatthias Ringwald  * @brief Enable/Disable Advertisements
561045c102fdSMatthias Ringwald  * @param enabled
561145c102fdSMatthias Ringwald  */
561245c102fdSMatthias Ringwald void gap_advertisements_enable(int enabled){
56135226d7f2SMatthias Ringwald     hci_stack->le_advertisements_enabled = enabled != 0;
5614bbc366e6SMatthias Ringwald     hci_update_advertisements_enabled_for_current_roles();
5615cfc59f1bSMatthias Ringwald     hci_run();
561645c102fdSMatthias Ringwald }
561745c102fdSMatthias Ringwald 
561835454696SMatthias Ringwald #endif
561906e5cf96SMatthias Ringwald 
562006e5cf96SMatthias Ringwald void hci_le_set_own_address_type(uint8_t own_address_type){
562106e5cf96SMatthias Ringwald     log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type);
562206e5cf96SMatthias Ringwald     if (own_address_type == hci_stack->le_own_addr_type) return;
562306e5cf96SMatthias Ringwald     hci_stack->le_own_addr_type = own_address_type;
562406e5cf96SMatthias Ringwald 
562564068776SMatthias Ringwald #ifdef ENABLE_LE_PERIPHERAL
562606e5cf96SMatthias Ringwald     // update advertisement parameters, too
562706e5cf96SMatthias Ringwald     hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS;
5628bbc366e6SMatthias Ringwald     hci_run();
562964068776SMatthias Ringwald #endif
563064068776SMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
563106e5cf96SMatthias Ringwald     // note: we don't update scan parameters or modify ongoing connection attempts
563264068776SMatthias Ringwald #endif
563306e5cf96SMatthias Ringwald }
563406e5cf96SMatthias Ringwald 
5635d70217a2SMatthias Ringwald #endif
563645c102fdSMatthias Ringwald 
5637616edd56SMatthias Ringwald uint8_t gap_disconnect(hci_con_handle_t handle){
56385917a5c5S[email protected]     hci_connection_t * conn = hci_connection_for_handle(handle);
56395917a5c5S[email protected]     if (!conn){
56407851196eSmatthias.ringwald         hci_emit_disconnection_complete(handle, 0);
5641616edd56SMatthias Ringwald         return 0;
56425917a5c5S[email protected]     }
56437fd7aa6fSMatthias Ringwald     // ignore if already disconnected
56447fd7aa6fSMatthias Ringwald     if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){
56457fd7aa6fSMatthias Ringwald         return 0;
56467fd7aa6fSMatthias Ringwald     }
56475917a5c5S[email protected]     conn->state = SEND_DISCONNECT;
56485917a5c5S[email protected]     hci_run();
5649616edd56SMatthias Ringwald     return 0;
56504f3229d8S[email protected] }
565104a6ef8cSmatthias.ringwald 
5652228e430cSMatthias Ringwald int gap_read_rssi(hci_con_handle_t con_handle){
5653228e430cSMatthias Ringwald     hci_connection_t * hci_connection = hci_connection_for_handle(con_handle);
5654228e430cSMatthias Ringwald     if (hci_connection == NULL) return 0;
5655228e430cSMatthias Ringwald     connectionSetAuthenticationFlags(hci_connection, READ_RSSI);
5656228e430cSMatthias Ringwald     hci_run();
5657228e430cSMatthias Ringwald     return 1;
5658228e430cSMatthias Ringwald }
5659228e430cSMatthias Ringwald 
5660a1bf5ae7SMatthias Ringwald /**
5661a1bf5ae7SMatthias Ringwald  * @brief Get connection type
5662a1bf5ae7SMatthias Ringwald  * @param con_handle
5663a1bf5ae7SMatthias Ringwald  * @result connection_type
5664a1bf5ae7SMatthias Ringwald  */
5665a1bf5ae7SMatthias Ringwald gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){
5666a1bf5ae7SMatthias Ringwald     hci_connection_t * conn = hci_connection_for_handle(connection_handle);
5667a1bf5ae7SMatthias Ringwald     if (!conn) return GAP_CONNECTION_INVALID;
5668a1bf5ae7SMatthias Ringwald     switch (conn->address_type){
5669a1bf5ae7SMatthias Ringwald         case BD_ADDR_TYPE_LE_PUBLIC:
5670a1bf5ae7SMatthias Ringwald         case BD_ADDR_TYPE_LE_RANDOM:
5671a1bf5ae7SMatthias Ringwald             return GAP_CONNECTION_LE;
5672a1bf5ae7SMatthias Ringwald         case BD_ADDR_TYPE_SCO:
5673a1bf5ae7SMatthias Ringwald             return GAP_CONNECTION_SCO;
5674f16129ceSMatthias Ringwald         case BD_ADDR_TYPE_ACL:
5675a1bf5ae7SMatthias Ringwald             return GAP_CONNECTION_ACL;
5676a1bf5ae7SMatthias Ringwald         default:
5677a1bf5ae7SMatthias Ringwald             return GAP_CONNECTION_INVALID;
5678a1bf5ae7SMatthias Ringwald     }
5679a1bf5ae7SMatthias Ringwald }
5680a1bf5ae7SMatthias Ringwald 
56812dceb1d6SMatthias Ringwald hci_role_t gap_get_role(hci_con_handle_t connection_handle){
56822dceb1d6SMatthias Ringwald     hci_connection_t * conn = hci_connection_for_handle(connection_handle);
56832dceb1d6SMatthias Ringwald     if (!conn) return HCI_ROLE_INVALID;
56842dceb1d6SMatthias Ringwald     return (hci_role_t) conn->role;
56852dceb1d6SMatthias Ringwald }
56862dceb1d6SMatthias Ringwald 
56872dceb1d6SMatthias Ringwald 
568844f858f3SMatthias Ringwald #ifdef ENABLE_CLASSIC
5689667ba9d1SMatthias Ringwald uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){
569088a03c8dSMatthias Ringwald     hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL);
569188a03c8dSMatthias Ringwald     if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
569288a03c8dSMatthias Ringwald     conn->request_role = role;
569388a03c8dSMatthias Ringwald     hci_run();
5694d04a455eSMatthias Ringwald     return ERROR_CODE_SUCCESS;
569588a03c8dSMatthias Ringwald }
569644f858f3SMatthias Ringwald #endif
569788a03c8dSMatthias Ringwald 
5698a9a4c409SMatthias Ringwald #ifdef ENABLE_BLE
56994f551432SMatthias Ringwald 
5700b90f6e0aSMatthias Ringwald uint8_t gap_le_set_phy(hci_con_handle_t connection_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){
5701b90f6e0aSMatthias Ringwald     hci_connection_t * conn = hci_connection_for_handle(connection_handle);
5702b90f6e0aSMatthias Ringwald     if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
5703b90f6e0aSMatthias Ringwald 
5704b90f6e0aSMatthias Ringwald     conn->le_phy_update_all_phys    = all_phys;
5705b90f6e0aSMatthias Ringwald     conn->le_phy_update_tx_phys     = tx_phys;
5706b90f6e0aSMatthias Ringwald     conn->le_phy_update_rx_phys     = rx_phys;
5707b90f6e0aSMatthias Ringwald     conn->le_phy_update_phy_options = phy_options;
5708b90f6e0aSMatthias Ringwald 
5709b90f6e0aSMatthias Ringwald     hci_run();
5710b90f6e0aSMatthias Ringwald 
5711b90f6e0aSMatthias Ringwald     return 0;
5712b90f6e0aSMatthias Ringwald }
5713b90f6e0aSMatthias Ringwald 
5714667ba9d1SMatthias Ringwald static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){
57157a92a9dbSMatthias Ringwald     // check if already in list
57167a92a9dbSMatthias Ringwald     btstack_linked_list_iterator_t it;
57177a92a9dbSMatthias Ringwald     btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist);
57187a92a9dbSMatthias Ringwald     while (btstack_linked_list_iterator_has_next(&it)) {
57197a92a9dbSMatthias Ringwald         whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it);
57207a92a9dbSMatthias Ringwald         if (entry->address_type != address_type) {
57217a92a9dbSMatthias Ringwald             continue;
57227a92a9dbSMatthias Ringwald         }
57237a92a9dbSMatthias Ringwald         if (memcmp(entry->address, address, 6) != 0) {
57247a92a9dbSMatthias Ringwald             continue;
57257a92a9dbSMatthias Ringwald         }
5726287379ccSMatthias Ringwald 		// disallow if already scheduled to add
5727287379ccSMatthias Ringwald 		if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){
57287a92a9dbSMatthias Ringwald 			return ERROR_CODE_COMMAND_DISALLOWED;
57297a92a9dbSMatthias Ringwald 		}
5730287379ccSMatthias Ringwald 		// still on controller, but scheduled to remove -> re-add
5731287379ccSMatthias Ringwald 		entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER;
5732287379ccSMatthias Ringwald 		return ERROR_CODE_SUCCESS;
5733287379ccSMatthias Ringwald     }
57347a92a9dbSMatthias Ringwald     // alloc and add to list
5735e83201bcSMatthias Ringwald     whitelist_entry_t * entry = btstack_memory_whitelist_entry_get();
5736e83201bcSMatthias Ringwald     if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED;
5737e83201bcSMatthias Ringwald     entry->address_type = address_type;
57386535961aSMatthias Ringwald     (void)memcpy(entry->address, address, 6);
5739e83201bcSMatthias Ringwald     entry->state = LE_WHITELIST_ADD_TO_CONTROLLER;
5740665d90f2SMatthias Ringwald     btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry);
5741226db5efSMatthias Ringwald     return ERROR_CODE_SUCCESS;
5742ac9c45e0SMatthias Ringwald }
5743ac9c45e0SMatthias Ringwald 
5744667ba9d1SMatthias Ringwald static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){
5745665d90f2SMatthias Ringwald     btstack_linked_list_iterator_t it;
5746665d90f2SMatthias Ringwald     btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist);
5747665d90f2SMatthias Ringwald     while (btstack_linked_list_iterator_has_next(&it)){
5748665d90f2SMatthias Ringwald         whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it);
57497a92a9dbSMatthias Ringwald         if (entry->address_type != address_type) {
57507a92a9dbSMatthias Ringwald             continue;
57517a92a9dbSMatthias Ringwald         }
57527a92a9dbSMatthias Ringwald         if (memcmp(entry->address, address, 6) != 0) {
57537a92a9dbSMatthias Ringwald             continue;
57547a92a9dbSMatthias Ringwald         }
5755e83201bcSMatthias Ringwald         if (entry->state & LE_WHITELIST_ON_CONTROLLER){
5756e83201bcSMatthias Ringwald             // remove from controller if already present
5757e83201bcSMatthias Ringwald             entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER;
5758a3b69fdeSMatthias Ringwald         }  else {
5759226db5efSMatthias Ringwald             // directly remove entry from whitelist
5760665d90f2SMatthias Ringwald             btstack_linked_list_iterator_remove(&it);
5761e83201bcSMatthias Ringwald             btstack_memory_whitelist_entry_free(entry);
5762e83201bcSMatthias Ringwald         }
5763a3b69fdeSMatthias Ringwald         return ERROR_CODE_SUCCESS;
5764a3b69fdeSMatthias Ringwald     }
5765a3b69fdeSMatthias Ringwald     return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
576642ff5ba1SMatthias Ringwald }
576742ff5ba1SMatthias Ringwald 
5768226db5efSMatthias Ringwald static void hci_whitelist_clear(void){
5769665d90f2SMatthias Ringwald     btstack_linked_list_iterator_t it;
5770665d90f2SMatthias Ringwald     btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist);
5771665d90f2SMatthias Ringwald     while (btstack_linked_list_iterator_has_next(&it)){
5772665d90f2SMatthias Ringwald         whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it);
5773e83201bcSMatthias Ringwald         if (entry->state & LE_WHITELIST_ON_CONTROLLER){
5774e83201bcSMatthias Ringwald             // remove from controller if already present
5775e83201bcSMatthias Ringwald             entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER;
5776e83201bcSMatthias Ringwald             continue;
5777e83201bcSMatthias Ringwald         }
577891915b0bSMatthias Ringwald         // directly remove entry from whitelist
5779665d90f2SMatthias Ringwald         btstack_linked_list_iterator_remove(&it);
5780e83201bcSMatthias Ringwald         btstack_memory_whitelist_entry_free(entry);
5781e83201bcSMatthias Ringwald     }
5782226db5efSMatthias Ringwald }
5783226db5efSMatthias Ringwald 
5784a3b69fdeSMatthias Ringwald /**
5785a3b69fdeSMatthias Ringwald  * @brief Clear Whitelist
5786a3b69fdeSMatthias Ringwald  * @returns 0 if ok
5787a3b69fdeSMatthias Ringwald  */
5788a3b69fdeSMatthias Ringwald uint8_t gap_whitelist_clear(void){
5789a3b69fdeSMatthias Ringwald     hci_whitelist_clear();
5790a3b69fdeSMatthias Ringwald     hci_run();
5791a3b69fdeSMatthias Ringwald     return ERROR_CODE_SUCCESS;
5792a3b69fdeSMatthias Ringwald }
5793a3b69fdeSMatthias Ringwald 
5794a3b69fdeSMatthias Ringwald /**
5795a3b69fdeSMatthias Ringwald  * @brief Add Device to Whitelist
5796a3b69fdeSMatthias Ringwald  * @param address_typ
5797a3b69fdeSMatthias Ringwald  * @param address
5798a3b69fdeSMatthias Ringwald  * @returns 0 if ok
5799a3b69fdeSMatthias Ringwald  */
5800667ba9d1SMatthias Ringwald uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){
5801a3b69fdeSMatthias Ringwald     uint8_t status = hci_whitelist_add(address_type, address);
5802a3b69fdeSMatthias Ringwald     if (status){
5803a3b69fdeSMatthias Ringwald         return status;
5804a3b69fdeSMatthias Ringwald     }
5805a3b69fdeSMatthias Ringwald     hci_run();
5806a3b69fdeSMatthias Ringwald     return ERROR_CODE_SUCCESS;
5807a3b69fdeSMatthias Ringwald }
5808a3b69fdeSMatthias Ringwald 
5809a3b69fdeSMatthias Ringwald /**
5810a3b69fdeSMatthias Ringwald  * @brief Remove Device from Whitelist
5811a3b69fdeSMatthias Ringwald  * @param address_typ
5812a3b69fdeSMatthias Ringwald  * @param address
5813a3b69fdeSMatthias Ringwald  * @returns 0 if ok
5814a3b69fdeSMatthias Ringwald  */
5815667ba9d1SMatthias Ringwald uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){
5816a3b69fdeSMatthias Ringwald     uint8_t status = hci_whitelist_remove(address_type, address);
5817a3b69fdeSMatthias Ringwald     if (status){
5818a3b69fdeSMatthias Ringwald         return status;
5819a3b69fdeSMatthias Ringwald     }
5820a3b69fdeSMatthias Ringwald     hci_run();
5821a3b69fdeSMatthias Ringwald     return ERROR_CODE_SUCCESS;
5822a3b69fdeSMatthias Ringwald }
5823a3b69fdeSMatthias Ringwald 
5824226db5efSMatthias Ringwald #ifdef ENABLE_LE_CENTRAL
5825226db5efSMatthias Ringwald /**
582695e257d9SMatthias Ringwald  *  @brief Connect with Whitelist
582795e257d9SMatthias Ringwald  *  @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions
582895e257d9SMatthias Ringwald  *  @returns - if ok
582995e257d9SMatthias Ringwald  */
583095e257d9SMatthias Ringwald uint8_t gap_connect_with_whitelist(void){
583195e257d9SMatthias Ringwald     if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){
583295e257d9SMatthias Ringwald         return ERROR_CODE_COMMAND_DISALLOWED;
583395e257d9SMatthias Ringwald     }
583495e257d9SMatthias Ringwald     hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST;
583595e257d9SMatthias Ringwald     hci_run();
583695e257d9SMatthias Ringwald     return ERROR_CODE_SUCCESS;
583795e257d9SMatthias Ringwald }
583895e257d9SMatthias Ringwald 
583995e257d9SMatthias Ringwald /**
5840226db5efSMatthias Ringwald  * @brief Auto Connection Establishment - Start Connecting to device
5841226db5efSMatthias Ringwald  * @param address_typ
5842226db5efSMatthias Ringwald  * @param address
5843226db5efSMatthias Ringwald  * @returns 0 if ok
5844226db5efSMatthias Ringwald  */
5845667ba9d1SMatthias Ringwald uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){
584695e257d9SMatthias Ringwald     if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){
5847226db5efSMatthias Ringwald         return ERROR_CODE_COMMAND_DISALLOWED;
5848226db5efSMatthias Ringwald     }
5849226db5efSMatthias Ringwald 
5850226db5efSMatthias Ringwald     uint8_t status = hci_whitelist_add(address_type, address);
585163f2efc9SMatthias Ringwald     if (status == BTSTACK_MEMORY_ALLOC_FAILED) {
5852226db5efSMatthias Ringwald         return status;
5853226db5efSMatthias Ringwald     }
5854226db5efSMatthias Ringwald 
5855226db5efSMatthias Ringwald     hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST;
5856226db5efSMatthias Ringwald 
5857226db5efSMatthias Ringwald     hci_run();
585895e257d9SMatthias Ringwald     return ERROR_CODE_SUCCESS;
5859226db5efSMatthias Ringwald }
5860226db5efSMatthias Ringwald 
5861226db5efSMatthias Ringwald /**
5862226db5efSMatthias Ringwald  * @brief Auto Connection Establishment - Stop Connecting to device
5863226db5efSMatthias Ringwald  * @param address_typ
5864226db5efSMatthias Ringwald  * @param address
5865226db5efSMatthias Ringwald  * @returns 0 if ok
5866226db5efSMatthias Ringwald  */
5867667ba9d1SMatthias Ringwald uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){
586895e257d9SMatthias Ringwald     if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){
586995e257d9SMatthias Ringwald         return ERROR_CODE_COMMAND_DISALLOWED;
587095e257d9SMatthias Ringwald     }
587195e257d9SMatthias Ringwald 
5872226db5efSMatthias Ringwald     hci_whitelist_remove(address_type, address);
587395e257d9SMatthias Ringwald     if (btstack_linked_list_empty(&hci_stack->le_whitelist)){
587495e257d9SMatthias Ringwald         hci_stack->le_connecting_request = LE_CONNECTING_IDLE;
587595e257d9SMatthias Ringwald     }
5876226db5efSMatthias Ringwald     hci_run();
5877226db5efSMatthias Ringwald     return 0;
5878226db5efSMatthias Ringwald }
5879226db5efSMatthias Ringwald 
5880226db5efSMatthias Ringwald /**
5881226db5efSMatthias Ringwald  * @brief Auto Connection Establishment - Stop everything
5882226db5efSMatthias Ringwald  * @note  Convenience function to stop all active auto connection attempts
5883226db5efSMatthias Ringwald  */
588495e257d9SMatthias Ringwald uint8_t gap_auto_connection_stop_all(void){
588595e257d9SMatthias Ringwald     if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) {
588695e257d9SMatthias Ringwald         return ERROR_CODE_COMMAND_DISALLOWED;
588795e257d9SMatthias Ringwald     }
5888226db5efSMatthias Ringwald     hci_whitelist_clear();
5889226db5efSMatthias Ringwald     hci_stack->le_connecting_request = LE_CONNECTING_IDLE;
5890e83201bcSMatthias Ringwald     hci_run();
589195e257d9SMatthias Ringwald     return ERROR_CODE_SUCCESS;
5892ac9c45e0SMatthias Ringwald }
5893c9db5c21SMilanka Ringwald 
5894c9db5c21SMilanka Ringwald uint16_t gap_le_connection_interval(hci_con_handle_t connection_handle){
5895c9db5c21SMilanka Ringwald     hci_connection_t * conn = hci_connection_for_handle(connection_handle);
5896c9db5c21SMilanka Ringwald     if (!conn) return 0;
5897c9db5c21SMilanka Ringwald     return conn->le_connection_interval;
5898c9db5c21SMilanka Ringwald }
5899d70217a2SMatthias Ringwald #endif
59004f551432SMatthias Ringwald #endif
59014f551432SMatthias Ringwald 
590235454696SMatthias Ringwald #ifdef ENABLE_CLASSIC
5903ac9c45e0SMatthias Ringwald /**
5904ff00ed1cSMatthias Ringwald  * @brief Set Extended Inquiry Response data
5905a8c4e5adSMatthias Ringwald  * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup
5906ff00ed1cSMatthias Ringwald  * @note has to be done before stack starts up
5907ff00ed1cSMatthias Ringwald  */
5908ff00ed1cSMatthias Ringwald void gap_set_extended_inquiry_response(const uint8_t * data){
5909ff00ed1cSMatthias Ringwald     hci_stack->eir_data = data;
5910ff00ed1cSMatthias Ringwald }
5911ff00ed1cSMatthias Ringwald 
5912ff00ed1cSMatthias Ringwald /**
5913f5875de5SMatthias Ringwald  * @brief Start GAP Classic Inquiry
5914f5875de5SMatthias Ringwald  * @param duration in 1.28s units
5915f5875de5SMatthias Ringwald  * @return 0 if ok
5916f5875de5SMatthias Ringwald  * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE
5917f5875de5SMatthias Ringwald  */
5918f5875de5SMatthias Ringwald int gap_inquiry_start(uint8_t duration_in_1280ms_units){
591999449554SMatthias Ringwald     if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED;
5920f5875de5SMatthias Ringwald     if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED;
5921a1df452eSMatthias Ringwald     if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){
5922f5875de5SMatthias Ringwald         return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;
5923f5875de5SMatthias Ringwald     }
5924f5875de5SMatthias Ringwald     hci_stack->inquiry_state = duration_in_1280ms_units;
5925f5875de5SMatthias Ringwald     hci_run();
5926f5875de5SMatthias Ringwald     return 0;
5927f5875de5SMatthias Ringwald }
5928f5875de5SMatthias Ringwald 
5929f5875de5SMatthias Ringwald /**
5930f5875de5SMatthias Ringwald  * @brief Stop GAP Classic Inquiry
5931f5875de5SMatthias Ringwald  * @returns 0 if ok
5932f5875de5SMatthias Ringwald  */
5933f5875de5SMatthias Ringwald int gap_inquiry_stop(void){
5934a1df452eSMatthias Ringwald     if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) {
5935f5875de5SMatthias Ringwald         // emit inquiry complete event, before it even started
5936f5875de5SMatthias Ringwald         uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0};
5937f5875de5SMatthias Ringwald         hci_emit_event(event, sizeof(event), 1);
5938f5875de5SMatthias Ringwald         return 0;
5939f5875de5SMatthias Ringwald     }
5940f5875de5SMatthias Ringwald     if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_ACTIVE) return ERROR_CODE_COMMAND_DISALLOWED;
5941f5875de5SMatthias Ringwald     hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL;
5942f5875de5SMatthias Ringwald     hci_run();
5943f5875de5SMatthias Ringwald     return 0;
5944f5875de5SMatthias Ringwald }
5945f5875de5SMatthias Ringwald 
5946b7f1ee76SMatthias Ringwald 
5947b7f1ee76SMatthias Ringwald /**
5948b7f1ee76SMatthias Ringwald  * @brief Remote Name Request
5949b7f1ee76SMatthias Ringwald  * @param addr
5950b7f1ee76SMatthias Ringwald  * @param page_scan_repetition_mode
5951b7f1ee76SMatthias Ringwald  * @param clock_offset only used when bit 15 is set
5952b7f1ee76SMatthias Ringwald  * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE
5953b7f1ee76SMatthias Ringwald  */
5954667ba9d1SMatthias Ringwald int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){
5955b7f1ee76SMatthias Ringwald     if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED;
59566535961aSMatthias Ringwald     (void)memcpy(hci_stack->remote_name_addr, addr, 6);
5957b7f1ee76SMatthias Ringwald     hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode;
5958b7f1ee76SMatthias Ringwald     hci_stack->remote_name_clock_offset = clock_offset;
5959b7f1ee76SMatthias Ringwald     hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND;
5960b7f1ee76SMatthias Ringwald     hci_run();
5961b7f1ee76SMatthias Ringwald     return 0;
5962b7f1ee76SMatthias Ringwald }
5963b7f1ee76SMatthias Ringwald 
5964667ba9d1SMatthias Ringwald static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){
59650a51f88bSMatthias Ringwald     hci_stack->gap_pairing_state = state;
59666535961aSMatthias Ringwald     (void)memcpy(hci_stack->gap_pairing_addr, addr, 6);
59670a51f88bSMatthias Ringwald     hci_run();
59680a51f88bSMatthias Ringwald     return 0;
59690a51f88bSMatthias Ringwald }
59700a51f88bSMatthias Ringwald 
59710a51f88bSMatthias Ringwald /**
5972aad97216SMatthias Ringwald  * @brief Legacy Pairing Pin Code Response for binary data / non-strings
5973aad97216SMatthias Ringwald  * @param addr
5974aad97216SMatthias Ringwald  * @param pin_data
5975aad97216SMatthias Ringwald  * @param pin_len
5976aad97216SMatthias Ringwald  * @return 0 if ok
5977aad97216SMatthias Ringwald  */
5978667ba9d1SMatthias Ringwald int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){
5979aad97216SMatthias Ringwald     if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED;
5980aad97216SMatthias Ringwald     hci_stack->gap_pairing_input.gap_pairing_pin = pin_data;
5981aad97216SMatthias Ringwald     hci_stack->gap_pairing_pin_len = pin_len;
5982aad97216SMatthias Ringwald     return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN);
5983aad97216SMatthias Ringwald }
5984aad97216SMatthias Ringwald 
5985aad97216SMatthias Ringwald /**
59860a51f88bSMatthias Ringwald  * @brief Legacy Pairing Pin Code Response
59870a51f88bSMatthias Ringwald  * @param addr
59880a51f88bSMatthias Ringwald  * @param pin
59890a51f88bSMatthias Ringwald  * @return 0 if ok
59900a51f88bSMatthias Ringwald  */
5991667ba9d1SMatthias Ringwald int gap_pin_code_response(const bd_addr_t addr, const char * pin){
5992aad97216SMatthias Ringwald     return gap_pin_code_response_binary(addr, (const uint8_t*) pin, strlen(pin));
59930a51f88bSMatthias Ringwald }
59940a51f88bSMatthias Ringwald 
59950a51f88bSMatthias Ringwald /**
59960a51f88bSMatthias Ringwald  * @brief Abort Legacy Pairing
59970a51f88bSMatthias Ringwald  * @param addr
59980a51f88bSMatthias Ringwald  * @param pin
59990a51f88bSMatthias Ringwald  * @return 0 if ok
60000a51f88bSMatthias Ringwald  */
60010a51f88bSMatthias Ringwald int gap_pin_code_negative(bd_addr_t addr){
6002cd74063aSMatthias Ringwald     if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED;
60030a51f88bSMatthias Ringwald     return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE);
60040a51f88bSMatthias Ringwald }
60050a51f88bSMatthias Ringwald 
60060a51f88bSMatthias Ringwald /**
60070a51f88bSMatthias Ringwald  * @brief SSP Passkey Response
60080a51f88bSMatthias Ringwald  * @param addr
60090a51f88bSMatthias Ringwald  * @param passkey
60100a51f88bSMatthias Ringwald  * @return 0 if ok
60110a51f88bSMatthias Ringwald  */
6012667ba9d1SMatthias Ringwald int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){
6013cd74063aSMatthias Ringwald     if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED;
6014d504181aSMatthias Ringwald     hci_stack->gap_pairing_input.gap_pairing_passkey = passkey;
60150a51f88bSMatthias Ringwald     return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY);
60160a51f88bSMatthias Ringwald }
60170a51f88bSMatthias Ringwald 
60180a51f88bSMatthias Ringwald /**
60190a51f88bSMatthias Ringwald  * @brief Abort SSP Passkey Entry/Pairing
60200a51f88bSMatthias Ringwald  * @param addr
60210a51f88bSMatthias Ringwald  * @param pin
60220a51f88bSMatthias Ringwald  * @return 0 if ok
60230a51f88bSMatthias Ringwald  */
6024667ba9d1SMatthias Ringwald int gap_ssp_passkey_negative(const bd_addr_t addr){
6025cd74063aSMatthias Ringwald     if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED;
60260a51f88bSMatthias Ringwald     return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE);
60270a51f88bSMatthias Ringwald }
60280a51f88bSMatthias Ringwald 
60290a51f88bSMatthias Ringwald /**
60300a51f88bSMatthias Ringwald  * @brief Accept SSP Numeric Comparison
60310a51f88bSMatthias Ringwald  * @param addr
60320a51f88bSMatthias Ringwald  * @param passkey
60330a51f88bSMatthias Ringwald  * @return 0 if ok
60340a51f88bSMatthias Ringwald  */
6035667ba9d1SMatthias Ringwald int gap_ssp_confirmation_response(const bd_addr_t addr){
6036cd74063aSMatthias Ringwald     if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED;
60370a51f88bSMatthias Ringwald     return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION);
60380a51f88bSMatthias Ringwald }
60390a51f88bSMatthias Ringwald 
60400a51f88bSMatthias Ringwald /**
60410a51f88bSMatthias Ringwald  * @brief Abort SSP Numeric Comparison/Pairing
60420a51f88bSMatthias Ringwald  * @param addr
60430a51f88bSMatthias Ringwald  * @param pin
60440a51f88bSMatthias Ringwald  * @return 0 if ok
60450a51f88bSMatthias Ringwald  */
6046667ba9d1SMatthias Ringwald int gap_ssp_confirmation_negative(const bd_addr_t addr){
6047cd74063aSMatthias Ringwald     if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED;
60480a51f88bSMatthias Ringwald     return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE);
60490a51f88bSMatthias Ringwald }
60500a51f88bSMatthias Ringwald 
605144565b0cSMatthias Ringwald #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY
605244565b0cSMatthias Ringwald 
605344565b0cSMatthias Ringwald static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){
605444565b0cSMatthias Ringwald     hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL);
605544565b0cSMatthias Ringwald     if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
605644565b0cSMatthias Ringwald     connectionSetAuthenticationFlags(conn, flag);
605744565b0cSMatthias Ringwald     hci_run();
605844565b0cSMatthias Ringwald     return ERROR_CODE_SUCCESS;
605944565b0cSMatthias Ringwald }
606044565b0cSMatthias Ringwald 
606144565b0cSMatthias Ringwald uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){
606244565b0cSMatthias Ringwald     return gap_set_auth_flag_and_run(addr, SEND_IO_CAPABILITIES_REPLY);
606344565b0cSMatthias Ringwald }
606444565b0cSMatthias Ringwald 
606544565b0cSMatthias Ringwald uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){
606644565b0cSMatthias Ringwald     return gap_set_auth_flag_and_run(addr, SEND_IO_CAPABILITIES_NEGATIVE_REPLY);
606744565b0cSMatthias Ringwald }
606844565b0cSMatthias Ringwald #endif
606944565b0cSMatthias Ringwald 
60701849becdSMatthias Ringwald #ifdef ENABLE_CLASSIC_PAIRING_OOB
60711849becdSMatthias Ringwald /**
60721849becdSMatthias Ringwald  * @brief Report Remote OOB Data
60731849becdSMatthias Ringwald  * @param bd_addr
60741849becdSMatthias Ringwald  * @param c_192 Simple Pairing Hash C derived from P-192 public key
60751849becdSMatthias Ringwald  * @param r_192 Simple Pairing Randomizer derived from P-192 public key
60761849becdSMatthias Ringwald  * @param c_256 Simple Pairing Hash C derived from P-256 public key
60771849becdSMatthias Ringwald  * @param r_256 Simple Pairing Randomizer derived from P-256 public key
60781849becdSMatthias Ringwald  */
60791849becdSMatthias Ringwald 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){
60801849becdSMatthias Ringwald     hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL);
60811849becdSMatthias Ringwald     if (connection == NULL) {
60821849becdSMatthias Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
60831849becdSMatthias Ringwald     }
60841849becdSMatthias Ringwald     connection->classic_oob_c_192 = c_192;
60851849becdSMatthias Ringwald     connection->classic_oob_r_192 = r_192;
60861849becdSMatthias Ringwald     connection->classic_oob_c_256 = c_256;
60871849becdSMatthias Ringwald     connection->classic_oob_r_256 = r_256;
60881849becdSMatthias Ringwald     return ERROR_CODE_SUCCESS;
60891849becdSMatthias Ringwald }
6090cf01e888SMatthias Ringwald /**
6091cf01e888SMatthias Ringwald  * @brief Generate new OOB data
6092cf01e888SMatthias Ringwald  * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures
6093cf01e888SMatthias Ringwald  */
6094cf01e888SMatthias Ringwald void gap_ssp_generate_oob_data(void){
6095cf01e888SMatthias Ringwald     hci_stack->classic_read_local_oob_data = true;
6096cf01e888SMatthias Ringwald     hci_run();
6097cf01e888SMatthias Ringwald }
6098cf01e888SMatthias Ringwald 
60991849becdSMatthias Ringwald #endif
61001849becdSMatthias Ringwald 
6101f5875de5SMatthias Ringwald /**
6102f6858d14SMatthias Ringwald  * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on.
6103f5875de5SMatthias Ringwald  * @param inquiry_mode see bluetooth_defines.h
6104f6858d14SMatthias Ringwald  */
6105f6858d14SMatthias Ringwald void hci_set_inquiry_mode(inquiry_mode_t mode){
6106f6858d14SMatthias Ringwald     hci_stack->inquiry_mode = mode;
6107f6858d14SMatthias Ringwald }
6108f6858d14SMatthias Ringwald 
6109f6858d14SMatthias Ringwald /**
6110d950d659SMatthias Ringwald  * @brief Configure Voice Setting for use with SCO data in HSP/HFP
6111d950d659SMatthias Ringwald  */
6112d950d659SMatthias Ringwald void hci_set_sco_voice_setting(uint16_t voice_setting){
6113d950d659SMatthias Ringwald     hci_stack->sco_voice_setting = voice_setting;
6114d950d659SMatthias Ringwald }
6115d950d659SMatthias Ringwald 
6116d950d659SMatthias Ringwald /**
6117d950d659SMatthias Ringwald  * @brief Get SCO Voice Setting
6118d950d659SMatthias Ringwald  * @return current voice setting
6119d950d659SMatthias Ringwald  */
61200cb5b971SMatthias Ringwald uint16_t hci_get_sco_voice_setting(void){
6121d950d659SMatthias Ringwald     return hci_stack->sco_voice_setting;
6122d950d659SMatthias Ringwald }
6123d950d659SMatthias Ringwald 
6124400ff5abSMatthias Ringwald static int hci_have_usb_transport(void){
6125400ff5abSMatthias Ringwald     if (!hci_stack->hci_transport) return 0;
6126400ff5abSMatthias Ringwald     const char * transport_name = hci_stack->hci_transport->name;
6127400ff5abSMatthias Ringwald     if (!transport_name) return 0;
6128400ff5abSMatthias Ringwald     return (transport_name[0] == 'H') && (transport_name[1] == '2');
6129400ff5abSMatthias Ringwald }
6130400ff5abSMatthias Ringwald 
6131b3aad8daSMatthias Ringwald /** @brief Get SCO packet length for current SCO Voice setting
6132b3aad8daSMatthias Ringwald  *  @note  Using SCO packets of the exact length is required for USB transfer
6133b3aad8daSMatthias Ringwald  *  @return Length of SCO packets in bytes (not audio frames)
6134b3aad8daSMatthias Ringwald  */
6135b3aad8daSMatthias Ringwald int hci_get_sco_packet_length(void){
6136a3069afeSMatthias Ringwald     int sco_packet_length = 0;
6137cf119f3bSMatthias Ringwald 
61381e20a53eSMatthias Ringwald #ifdef ENABLE_SCO_OVER_HCI
61396f28d2eeSMatthias Ringwald     // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes
61401431ce27SMatthias Ringwald     int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2;
6141cf119f3bSMatthias Ringwald 
6142400ff5abSMatthias Ringwald     if (hci_have_usb_transport()){
6143400ff5abSMatthias Ringwald         // see Core Spec for H2 USB Transfer.
6144cf119f3bSMatthias Ringwald         // 3 byte SCO header + 24 bytes per connection
614552e46257SMatthias Ringwald         int num_sco_connections = btstack_max(1, hci_number_sco_connections());
614652e46257SMatthias Ringwald         sco_packet_length = 3 + 24 * num_sco_connections * multiplier;
6147400ff5abSMatthias Ringwald     } else {
6148400ff5abSMatthias Ringwald         // 3 byte SCO header + SCO packet size over the air (60 bytes)
6149400ff5abSMatthias Ringwald         sco_packet_length = 3 + 60 * multiplier;
6150d966a453SMatthias Ringwald         // assert that it still fits inside an SCO buffer
6151d966a453SMatthias Ringwald         if (sco_packet_length > hci_stack->sco_data_packet_length){
6152d966a453SMatthias Ringwald             sco_packet_length = 3 + 60;
6153d966a453SMatthias Ringwald         }
6154400ff5abSMatthias Ringwald     }
6155a3069afeSMatthias Ringwald #endif
61565b7087c7SMatthias Ringwald 
61575b7087c7SMatthias Ringwald #ifdef HAVE_SCO_TRANSPORT
61585b7087c7SMatthias Ringwald     // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes
61591e20a53eSMatthias Ringwald     int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2;
61605b7087c7SMatthias Ringwald     sco_packet_length = 3 + 60 * multiplier;
61615b7087c7SMatthias Ringwald #endif
6162a3069afeSMatthias Ringwald     return sco_packet_length;
6163b3aad8daSMatthias Ringwald }
6164b3aad8daSMatthias Ringwald 
6165c4c88f1bSJakob Krantz /**
6166c4c88f1bSJakob Krantz * @brief Sets the master/slave policy
6167c4c88f1bSJakob Krantz * @param policy (0: attempt to become master, 1: let connecting device decide)
6168c4c88f1bSJakob Krantz */
6169c4c88f1bSJakob Krantz void hci_set_master_slave_policy(uint8_t policy){
6170c4c88f1bSJakob Krantz     hci_stack->master_slave_policy = policy;
6171c4c88f1bSJakob Krantz }
6172c4c88f1bSJakob Krantz 
6173c4c88f1bSJakob Krantz #endif
6174ec111c8bSMatthias Ringwald 
6175ec111c8bSMatthias Ringwald HCI_STATE hci_get_state(void){
6176ec111c8bSMatthias Ringwald     return hci_stack->state;
6177ec111c8bSMatthias Ringwald }
6178ec111c8bSMatthias Ringwald 
617907e010b6SMilanka Ringwald #ifdef ENABLE_CLASSIC
61805e91d96cSMatthias Ringwald void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){
618107e010b6SMilanka Ringwald     hci_stack->gap_classic_accept_callback = accept_callback;
618207e010b6SMilanka Ringwald }
618307e010b6SMilanka Ringwald #endif
6184ec111c8bSMatthias Ringwald 
6185d950d659SMatthias Ringwald /**
6186d23838ecSMatthias Ringwald  * @brief Set callback for Bluetooth Hardware Error
6187d23838ecSMatthias Ringwald  */
6188c2e1fa60SMatthias Ringwald void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){
6189d23838ecSMatthias Ringwald     hci_stack->hardware_error_callback = fn;
6190d23838ecSMatthias Ringwald }
6191d23838ecSMatthias Ringwald 
619271de195eSMatthias Ringwald void hci_disconnect_all(void){
6193665d90f2SMatthias Ringwald     btstack_linked_list_iterator_t it;
6194665d90f2SMatthias Ringwald     btstack_linked_list_iterator_init(&it, &hci_stack->connections);
6195665d90f2SMatthias Ringwald     while (btstack_linked_list_iterator_has_next(&it)){
6196665d90f2SMatthias Ringwald         hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it);
619704a6ef8cSmatthias.ringwald         if (con->state == SENT_DISCONNECT) continue;
619804a6ef8cSmatthias.ringwald         con->state = SEND_DISCONNECT;
619904a6ef8cSmatthias.ringwald     }
6200d31fba26S[email protected]     hci_run();
620104a6ef8cSmatthias.ringwald }
620233373e40SMatthias Ringwald 
620333373e40SMatthias Ringwald uint16_t hci_get_manufacturer(void){
620433373e40SMatthias Ringwald     return hci_stack->manufacturer;
620533373e40SMatthias Ringwald }
62069c6e867eSMatthias Ringwald 
62073e329ddfSandryblack #ifdef ENABLE_BLE
62083e329ddfSandryblack 
62099c6e867eSMatthias Ringwald static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){
62109c6e867eSMatthias Ringwald     hci_connection_t * hci_con = hci_connection_for_handle(con_handle);
62119c6e867eSMatthias Ringwald     if (!hci_con) return NULL;
62129c6e867eSMatthias Ringwald     return &hci_con->sm_connection;
62139c6e867eSMatthias Ringwald }
62149c6e867eSMatthias Ringwald 
62159c6e867eSMatthias Ringwald // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build
62169c6e867eSMatthias Ringwald // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated
62179c6e867eSMatthias Ringwald 
62189c6e867eSMatthias Ringwald int gap_encryption_key_size(hci_con_handle_t con_handle){
6219c5fb5ca4SMatthias Ringwald     hci_connection_t * hci_connection = hci_connection_for_handle(con_handle);
6220c5fb5ca4SMatthias Ringwald     if (hci_connection == NULL) return 0;
6221c5fb5ca4SMatthias Ringwald     if (hci_is_le_connection(hci_connection)){
6222c5fb5ca4SMatthias Ringwald         sm_connection_t * sm_conn = &hci_connection->sm_connection;
6223c5fb5ca4SMatthias Ringwald         if (sm_conn->sm_connection_encrypted) {
62249c6e867eSMatthias Ringwald             return sm_conn->sm_actual_encryption_key_size;
62259c6e867eSMatthias Ringwald         }
6226c5fb5ca4SMatthias Ringwald     }
6227c5fb5ca4SMatthias Ringwald #ifdef ENABLE_CLASSIC
6228c5fb5ca4SMatthias Ringwald     else {
6229c5fb5ca4SMatthias Ringwald         if ((hci_connection->authentication_flags & CONNECTION_ENCRYPTED)){
6230c5fb5ca4SMatthias Ringwald             return hci_connection->encryption_key_size;
6231c5fb5ca4SMatthias Ringwald         }
6232c5fb5ca4SMatthias Ringwald     }
6233c5fb5ca4SMatthias Ringwald #endif
6234c5fb5ca4SMatthias Ringwald     return 0;
6235c5fb5ca4SMatthias Ringwald }
62369c6e867eSMatthias Ringwald 
62379c6e867eSMatthias Ringwald int gap_authenticated(hci_con_handle_t con_handle){
6238c5fb5ca4SMatthias Ringwald     hci_connection_t * hci_connection = hci_connection_for_handle(con_handle);
6239c5fb5ca4SMatthias Ringwald     if (hci_connection == NULL) return 0;
62405f3981bfSMatthias Ringwald 
6241c5fb5ca4SMatthias Ringwald     switch (hci_connection->address_type){
62425f3981bfSMatthias Ringwald         case BD_ADDR_TYPE_LE_PUBLIC:
62435f3981bfSMatthias Ringwald         case BD_ADDR_TYPE_LE_RANDOM:
6244c5fb5ca4SMatthias Ringwald             if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated
6245c5fb5ca4SMatthias Ringwald             return hci_connection->sm_connection.sm_connection_authenticated;
624659a1a47aSMatthias Ringwald #ifdef ENABLE_CLASSIC
62475f3981bfSMatthias Ringwald         case BD_ADDR_TYPE_SCO:
6248f16129ceSMatthias Ringwald         case BD_ADDR_TYPE_ACL:
6249c5fb5ca4SMatthias Ringwald             return gap_authenticated_for_link_key_type(hci_connection->link_key_type);
625059a1a47aSMatthias Ringwald #endif
62515f3981bfSMatthias Ringwald         default:
62525f3981bfSMatthias Ringwald             return 0;
62535f3981bfSMatthias Ringwald     }
62549c6e867eSMatthias Ringwald }
62559c6e867eSMatthias Ringwald 
6256f1dfbe18SMatthias Ringwald int gap_secure_connection(hci_con_handle_t con_handle){
6257c5fb5ca4SMatthias Ringwald     hci_connection_t * hci_connection = hci_connection_for_handle(con_handle);
6258c5fb5ca4SMatthias Ringwald     if (hci_connection == NULL) return 0;
62598b35e16aSMatthias Ringwald 
6260c5fb5ca4SMatthias Ringwald     switch (hci_connection->address_type){
62618b35e16aSMatthias Ringwald         case BD_ADDR_TYPE_LE_PUBLIC:
62628b35e16aSMatthias Ringwald         case BD_ADDR_TYPE_LE_RANDOM:
6263c5fb5ca4SMatthias Ringwald             if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated
6264c5fb5ca4SMatthias Ringwald             return hci_connection->sm_connection.sm_connection_sc;
626559a1a47aSMatthias Ringwald #ifdef ENABLE_CLASSIC
62668b35e16aSMatthias Ringwald         case BD_ADDR_TYPE_SCO:
6267f16129ceSMatthias Ringwald         case BD_ADDR_TYPE_ACL:
6268c5fb5ca4SMatthias Ringwald             return gap_secure_connection_for_link_key_type(hci_connection->link_key_type);
626959a1a47aSMatthias Ringwald #endif
62708b35e16aSMatthias Ringwald         default:
62718b35e16aSMatthias Ringwald             return 0;
62728b35e16aSMatthias Ringwald     }
6273f1dfbe18SMatthias Ringwald }
6274f1dfbe18SMatthias Ringwald 
62751e122704SMatthias Ringwald bool gap_bonded(hci_con_handle_t con_handle){
62761e122704SMatthias Ringwald 	hci_connection_t * hci_connection = hci_connection_for_handle(con_handle);
62771e122704SMatthias Ringwald 	if (hci_connection == NULL) return 0;
62781e122704SMatthias Ringwald 
627948f33f37SMatthias Ringwald #ifdef ENABLE_CLASSIC
62801e122704SMatthias Ringwald 	link_key_t link_key;
62811e122704SMatthias Ringwald 	link_key_type_t link_key_type;
628248f33f37SMatthias Ringwald #endif
62831e122704SMatthias Ringwald 	switch (hci_connection->address_type){
62841e122704SMatthias Ringwald 		case BD_ADDR_TYPE_LE_PUBLIC:
62851e122704SMatthias Ringwald 		case BD_ADDR_TYPE_LE_RANDOM:
62861e122704SMatthias Ringwald 			return hci_connection->sm_connection.sm_le_db_index >= 0;
62871e122704SMatthias Ringwald #ifdef ENABLE_CLASSIC
62881e122704SMatthias Ringwald 		case BD_ADDR_TYPE_SCO:
62891e122704SMatthias Ringwald 		case BD_ADDR_TYPE_ACL:
62901e122704SMatthias Ringwald 			return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type);
62911e122704SMatthias Ringwald #endif
62921e122704SMatthias Ringwald 		default:
62931e122704SMatthias Ringwald 			return false;
62941e122704SMatthias Ringwald 	}
62951e122704SMatthias Ringwald }
62961e122704SMatthias Ringwald 
62971e122704SMatthias Ringwald 
62989c6e867eSMatthias Ringwald authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){
62999c6e867eSMatthias Ringwald     sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle);
63009c6e867eSMatthias Ringwald     if (!sm_conn) return AUTHORIZATION_UNKNOWN;     // wrong connection
63019c6e867eSMatthias Ringwald     if (!sm_conn->sm_connection_encrypted)               return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized
63029c6e867eSMatthias Ringwald     if (!sm_conn->sm_connection_authenticated)           return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized
63039c6e867eSMatthias Ringwald     return sm_conn->sm_connection_authorization_state;
63049c6e867eSMatthias Ringwald }
63059c6e867eSMatthias Ringwald #endif
6306f8ee3071SMatthias Ringwald 
6307f8ee3071SMatthias Ringwald #ifdef ENABLE_CLASSIC
6308f8ee3071SMatthias Ringwald 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){
6309f8ee3071SMatthias Ringwald     hci_connection_t * conn = hci_connection_for_handle(con_handle);
6310f8ee3071SMatthias Ringwald     if (!conn) return GAP_CONNECTION_INVALID;
6311f8ee3071SMatthias Ringwald     conn->sniff_min_interval = sniff_min_interval;
6312f8ee3071SMatthias Ringwald     conn->sniff_max_interval = sniff_max_interval;
6313f8ee3071SMatthias Ringwald     conn->sniff_attempt = sniff_attempt;
6314f8ee3071SMatthias Ringwald     conn->sniff_timeout = sniff_timeout;
6315f8ee3071SMatthias Ringwald     hci_run();
6316f8ee3071SMatthias Ringwald     return 0;
6317f8ee3071SMatthias Ringwald }
6318f8ee3071SMatthias Ringwald 
6319f8ee3071SMatthias Ringwald /**
6320f8ee3071SMatthias Ringwald  * @brief Exit Sniff mode
6321f8ee3071SMatthias Ringwald  * @param con_handle
6322f8ee3071SMatthias Ringwald  @ @return 0 if ok
6323f8ee3071SMatthias Ringwald  */
6324f8ee3071SMatthias Ringwald uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){
6325f8ee3071SMatthias Ringwald     hci_connection_t * conn = hci_connection_for_handle(con_handle);
6326f8ee3071SMatthias Ringwald     if (!conn) return GAP_CONNECTION_INVALID;
6327f8ee3071SMatthias Ringwald     conn->sniff_min_interval = 0xffff;
6328f8ee3071SMatthias Ringwald     hci_run();
6329f8ee3071SMatthias Ringwald     return 0;
6330f8ee3071SMatthias Ringwald }
6331bea424a5SMatthias Ringwald 
6332bea424a5SMatthias Ringwald void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){
6333bea424a5SMatthias Ringwald     hci_stack->new_page_scan_interval = page_scan_interval;
6334bea424a5SMatthias Ringwald     hci_stack->new_page_scan_window = page_scan_window;
6335bea424a5SMatthias Ringwald     hci_run();
6336bea424a5SMatthias Ringwald }
6337bea424a5SMatthias Ringwald 
6338bea424a5SMatthias Ringwald void gap_set_page_scan_type(page_scan_type_t page_scan_type){
6339bea424a5SMatthias Ringwald     hci_stack->new_page_scan_type = (uint8_t) page_scan_type;
6340bea424a5SMatthias Ringwald     hci_run();
6341bea424a5SMatthias Ringwald }
6342bea424a5SMatthias Ringwald 
6343f8ee3071SMatthias Ringwald #endif
6344beceeddeSMatthias Ringwald 
6345beceeddeSMatthias Ringwald void hci_halting_defer(void){
6346beceeddeSMatthias Ringwald     if (hci_stack->state != HCI_STATE_HALTING) return;
6347beceeddeSMatthias Ringwald     switch (hci_stack->substate){
6348beceeddeSMatthias Ringwald         case HCI_HALTING_DISCONNECT_ALL_NO_TIMER:
6349beceeddeSMatthias Ringwald         case HCI_HALTING_CLOSE:
6350beceeddeSMatthias Ringwald             hci_stack->substate = HCI_HALTING_DISCONNECT_ALL_TIMER;
6351beceeddeSMatthias Ringwald             break;
6352beceeddeSMatthias Ringwald         default:
6353beceeddeSMatthias Ringwald             break;
6354beceeddeSMatthias Ringwald     }
6355beceeddeSMatthias Ringwald }
6356eddac615SMatthias Ringwald 
635721debf25SMatthias Ringwald #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION
635821debf25SMatthias Ringwald void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){
635921debf25SMatthias Ringwald     if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return;
636021debf25SMatthias Ringwald     if (le_device_db_index >= le_device_db_max_count()) return;
636121debf25SMatthias Ringwald     uint8_t offset = le_device_db_index >> 3;
636221debf25SMatthias Ringwald     uint8_t mask = 1 << (le_device_db_index & 7);
636302b02cffSMatthias Ringwald     hci_stack->le_resolving_list_add_entries[offset] |= mask;
636421debf25SMatthias Ringwald     if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){
636502b02cffSMatthias Ringwald     	// note: go back to remove entries, otherwise, a remove + add will skip the add
636602b02cffSMatthias Ringwald         hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES;
636702b02cffSMatthias Ringwald     }
636802b02cffSMatthias Ringwald }
636902b02cffSMatthias Ringwald 
637002b02cffSMatthias Ringwald void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){
637102b02cffSMatthias Ringwald 	if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return;
637202b02cffSMatthias Ringwald 	if (le_device_db_index >= le_device_db_max_count()) return;
637302b02cffSMatthias Ringwald 	uint8_t offset = le_device_db_index >> 3;
637402b02cffSMatthias Ringwald 	uint8_t mask = 1 << (le_device_db_index & 7);
637502b02cffSMatthias Ringwald 	hci_stack->le_resolving_list_remove_entries[offset] |= mask;
637602b02cffSMatthias Ringwald 	if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){
637702b02cffSMatthias Ringwald 		hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES;
637821debf25SMatthias Ringwald 	}
637921debf25SMatthias Ringwald }
6380cf38a091SMatthias Ringwald 
6381cf38a091SMatthias Ringwald uint8_t gap_load_resolving_list_from_le_device_db(void){
6382cf38a091SMatthias Ringwald 	if ((hci_stack->local_supported_commands[1] & (1 << 2)) == 0) {
6383cf38a091SMatthias Ringwald 		return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE;
6384cf38a091SMatthias Ringwald 	}
6385cf38a091SMatthias Ringwald 	if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){
6386cf38a091SMatthias Ringwald 		// restart le resolving list update
6387cf38a091SMatthias Ringwald 		hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE;
6388cf38a091SMatthias Ringwald 	}
6389cf38a091SMatthias Ringwald 	return ERROR_CODE_SUCCESS;
6390cf38a091SMatthias Ringwald }
639121debf25SMatthias Ringwald #endif
639221debf25SMatthias Ringwald 
6393eddac615SMatthias Ringwald #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
639418976c74SMatthias Ringwald void hci_setup_test_connections_fuzz(void){
639518976c74SMatthias Ringwald     hci_connection_t * conn;
639618976c74SMatthias Ringwald 
639718976c74SMatthias Ringwald     // default address: 66:55:44:33:00:01
639818976c74SMatthias Ringwald     bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00};
639918976c74SMatthias Ringwald 
64007d33cb26SMilanka Ringwald     // setup Controller info
64017d33cb26SMilanka Ringwald     hci_stack->num_cmd_packets = 255;
64027d33cb26SMilanka Ringwald     hci_stack->acl_packets_total_num = 255;
64037d33cb26SMilanka Ringwald 
640418976c74SMatthias Ringwald     // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01
640518976c74SMatthias Ringwald     addr[5] = 0x01;
640618976c74SMatthias Ringwald     conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL);
640718976c74SMatthias Ringwald     conn->con_handle = addr[5];
640818976c74SMatthias Ringwald     conn->role  = HCI_ROLE_SLAVE;
640918976c74SMatthias Ringwald     conn->state = RECEIVED_CONNECTION_REQUEST;
64107d33cb26SMilanka Ringwald     conn->sm_connection.sm_role = HCI_ROLE_SLAVE;
641118976c74SMatthias Ringwald 
641218976c74SMatthias Ringwald     // setup incoming Classic SCO connection with con handle 0x0002
641318976c74SMatthias Ringwald     addr[5] = 0x02;
641418976c74SMatthias Ringwald     conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO);
641518976c74SMatthias Ringwald     conn->con_handle = addr[5];
641618976c74SMatthias Ringwald     conn->role  = HCI_ROLE_SLAVE;
641718976c74SMatthias Ringwald     conn->state = RECEIVED_CONNECTION_REQUEST;
64187d33cb26SMilanka Ringwald     conn->sm_connection.sm_role = HCI_ROLE_SLAVE;
641918976c74SMatthias Ringwald 
642018976c74SMatthias Ringwald     // setup ready Classic ACL connection with con handle 0x0003
642118976c74SMatthias Ringwald     addr[5] = 0x03;
642218976c74SMatthias Ringwald     conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL);
642318976c74SMatthias Ringwald     conn->con_handle = addr[5];
642418976c74SMatthias Ringwald     conn->role  = HCI_ROLE_SLAVE;
642518976c74SMatthias Ringwald     conn->state = OPEN;
64267d33cb26SMilanka Ringwald     conn->sm_connection.sm_role = HCI_ROLE_SLAVE;
642718976c74SMatthias Ringwald 
642818976c74SMatthias Ringwald     // setup ready Classic SCO connection with con handle 0x0004
642918976c74SMatthias Ringwald     addr[5] = 0x04;
643018976c74SMatthias Ringwald     conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO);
643118976c74SMatthias Ringwald     conn->con_handle = addr[5];
643218976c74SMatthias Ringwald     conn->role  = HCI_ROLE_SLAVE;
643318976c74SMatthias Ringwald     conn->state = OPEN;
64347d33cb26SMilanka Ringwald     conn->sm_connection.sm_role = HCI_ROLE_SLAVE;
643518976c74SMatthias Ringwald 
643618976c74SMatthias Ringwald     // setup ready LE ACL connection with con handle 0x005 and public address
643718976c74SMatthias Ringwald     addr[5] = 0x05;
643818976c74SMatthias Ringwald     conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC);
643918976c74SMatthias Ringwald     conn->con_handle = addr[5];
644018976c74SMatthias Ringwald     conn->role  = HCI_ROLE_SLAVE;
644118976c74SMatthias Ringwald     conn->state = OPEN;
64427d33cb26SMilanka Ringwald     conn->sm_connection.sm_role = HCI_ROLE_SLAVE;
64438046a24aSMatthias Ringwald     conn->sm_connection.sm_connection_encrypted = 1;
644418976c74SMatthias Ringwald }
644518976c74SMatthias Ringwald 
6446eddac615SMatthias Ringwald void hci_free_connections_fuzz(void){
6447eddac615SMatthias Ringwald     btstack_linked_list_iterator_t it;
6448eddac615SMatthias Ringwald     btstack_linked_list_iterator_init(&it, &hci_stack->connections);
6449eddac615SMatthias Ringwald     while (btstack_linked_list_iterator_has_next(&it)){
6450eddac615SMatthias Ringwald         hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it);
6451eddac615SMatthias Ringwald         btstack_linked_list_iterator_remove(&it);
6452eddac615SMatthias Ringwald         btstack_memory_hci_connection_free(con);
6453eddac615SMatthias Ringwald     }
6454eddac615SMatthias Ringwald }
64551470db0cSMatthias Ringwald void hci_simulate_working_fuzz(void){
64561470db0cSMatthias Ringwald     hci_init_done();
64571470db0cSMatthias Ringwald     hci_stack->num_cmd_packets = 255;
64581470db0cSMatthias Ringwald }
6459eddac615SMatthias Ringwald #endif
6460