mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-09-18 07:41:57 +00:00
375d8e4377
Adds support to connection object allowing to set the link type. At the moment only LE link is used since LE connection handling is implemented when BR/EDR support is enabled. Change-Id: I5204a93670308b0151deaa98106a1551b9b39493 Signed-off-by: Arkadiusz Lichwa <arkadiusz.lichwa@tieto.com>
145 lines
3.5 KiB
C
145 lines
3.5 KiB
C
/** @file
|
|
* @brief Internal APIs for Bluetooth connection handling.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2015 Intel Corporation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
typedef enum {
|
|
BT_CONN_DISCONNECTED,
|
|
BT_CONN_CONNECT_SCAN,
|
|
BT_CONN_CONNECT,
|
|
BT_CONN_CONNECTED,
|
|
BT_CONN_DISCONNECT,
|
|
} bt_conn_state_t;
|
|
|
|
/* bt_conn flags: the flags defined here represent connection parameters */
|
|
enum {
|
|
BT_CONN_AUTO_CONNECT,
|
|
};
|
|
|
|
|
|
enum {
|
|
BT_CONN_TYPE_LE,
|
|
#if defined(CONFIG_BLUETOOTH_BREDR)
|
|
BT_CONN_TYPE_BREDR,
|
|
#endif
|
|
};
|
|
|
|
|
|
struct bt_conn_le {
|
|
bt_addr_le_t dst;
|
|
|
|
bt_addr_le_t init_addr;
|
|
bt_addr_le_t resp_addr;
|
|
uint8_t conn_interval;
|
|
uint8_t features[8];
|
|
};
|
|
|
|
#if defined(CONFIG_BLUETOOTH_BREDR)
|
|
struct bt_conn_br {
|
|
};
|
|
#endif
|
|
|
|
struct bt_conn {
|
|
uint16_t handle;
|
|
uint8_t type;
|
|
uint8_t role;
|
|
atomic_t flags[1];
|
|
|
|
uint8_t pending_pkts;
|
|
|
|
#if defined(CONFIG_BLUETOOTH_SMP)
|
|
uint8_t encrypt;
|
|
bt_security_t sec_level;
|
|
bt_security_t required_sec_level;
|
|
#endif /* CONFIG_BLUETOOTH_SMP */
|
|
|
|
uint16_t rx_len;
|
|
struct net_buf *rx;
|
|
|
|
/* Queue for outgoing ACL data */
|
|
struct nano_fifo tx_queue;
|
|
|
|
struct bt_keys *keys;
|
|
|
|
/* L2CAP channels */
|
|
void *channels;
|
|
|
|
atomic_t ref;
|
|
|
|
bt_conn_state_t state;
|
|
|
|
/* Handle allowing to cancel timeout fiber */
|
|
void *timeout;
|
|
|
|
union {
|
|
struct bt_conn_le le;
|
|
#if defined(CONFIG_BLUETOOTH_BREDR)
|
|
struct bt_conn_br br;
|
|
#endif
|
|
};
|
|
|
|
/* Stack for TX fiber and timeout fiber.
|
|
* Since these fibers don't overlap, one stack can be used by
|
|
* both of them.
|
|
*/
|
|
BT_STACK(stack, 256);
|
|
};
|
|
|
|
/* Process incoming data for a connection */
|
|
void bt_conn_recv(struct bt_conn *conn, struct net_buf *buf, uint8_t flags);
|
|
|
|
/* Send data over a connection */
|
|
void bt_conn_send(struct bt_conn *conn, struct net_buf *buf);
|
|
|
|
/* Add a new connection */
|
|
struct bt_conn *bt_conn_add(const bt_addr_le_t *peer);
|
|
|
|
/* Look up an existing connection */
|
|
struct bt_conn *bt_conn_lookup_handle(uint16_t handle);
|
|
|
|
/* Look up a connection state. For BT_ADDR_LE_ANY, returns the first connection
|
|
* with the specific state
|
|
*/
|
|
struct bt_conn *bt_conn_lookup_state(const bt_addr_le_t *peer,
|
|
const bt_conn_state_t state);
|
|
|
|
/* Set connection object in certain state and perform action related to state */
|
|
void bt_conn_set_state(struct bt_conn *conn, bt_conn_state_t state);
|
|
|
|
int bt_conn_le_conn_update(struct bt_conn *conn, uint16_t min, uint16_t max,
|
|
uint16_t latency, uint16_t timeout);
|
|
|
|
#if defined(CONFIG_BLUETOOTH_SMP)
|
|
/* rand and ediv should be in BT order */
|
|
int bt_conn_le_start_encryption(struct bt_conn *conn, uint64_t rand,
|
|
uint16_t ediv, const uint8_t *ltk, size_t len);
|
|
|
|
/* Notify higher layers that RPA was resolved */
|
|
void bt_conn_identity_resolved(struct bt_conn *conn);
|
|
|
|
/* Notify higher layers that connection security changed */
|
|
void bt_conn_security_changed(struct bt_conn *conn);
|
|
|
|
/* Prepare a PDU to be sent over a connection */
|
|
struct net_buf *bt_conn_create_pdu(struct nano_fifo *fifo, size_t reserve);
|
|
|
|
/* Initialize connection management */
|
|
int bt_conn_init(void);
|
|
|
|
#endif /* CONFIG_BLUETOOTH_SMP */
|