1 /* l2cap_br.c - L2CAP BREDR internal interface 2 * 3 * This is the only interface between l2cap.c and l2cap_br.c. 4 * 5 * Copyright (c) 2024 Nordic Semiconductor ASA 6 * 7 * SPDX-License-Identifier: Apache-2.0 8 */ 9 10 /* Need a name different than bt_l2cap_fixed_chan for a different section */ 11 struct bt_l2cap_br_fixed_chan { 12 uint16_t cid; 13 int (*accept)(struct bt_conn *conn, struct bt_l2cap_chan **chan); 14 }; 15 16 #define BT_L2CAP_BR_CHANNEL_DEFINE(_name, _cid, _accept) \ 17 const STRUCT_SECTION_ITERABLE(bt_l2cap_br_fixed_chan, _name) = { \ 18 .cid = _cid, \ 19 .accept = _accept, \ 20 } 21 22 /* Initialize BR/EDR L2CAP signal layer */ 23 void bt_l2cap_br_init(void); 24 25 /* Notify BR/EDR L2CAP channels about established new ACL connection */ 26 void bt_l2cap_br_connected(struct bt_conn *conn); 27 28 /* Notify BR/EDR L2CAP channels about ACL disconnection*/ 29 void bt_l2cap_br_disconnected(struct bt_conn *conn); 30 31 /* Lookup BR/EDR L2CAP channel by Receiver CID */ 32 struct bt_l2cap_chan *bt_l2cap_br_lookup_rx_cid(struct bt_conn *conn, 33 uint16_t cid); 34 35 /* Disconnects dynamic channel */ 36 int bt_l2cap_br_chan_disconnect(struct bt_l2cap_chan *chan); 37 38 /* Make connection to peer psm server */ 39 int bt_l2cap_br_chan_connect(struct bt_conn *conn, struct bt_l2cap_chan *chan, 40 uint16_t psm); 41 42 /* Send packet data to connected peer */ 43 int bt_l2cap_br_chan_send(struct bt_l2cap_chan *chan, struct net_buf *buf); 44 int bt_l2cap_br_chan_send_cb(struct bt_l2cap_chan *chan, struct net_buf *buf, bt_conn_tx_cb_t cb, 45 void *user_data); 46 47 /* Send a single PDU over a BR channel. 48 * Used by e.g. SMP. 49 */ 50 int bt_l2cap_br_send_cb(struct bt_conn *conn, uint16_t cid, struct net_buf *buf, 51 bt_conn_tx_cb_t cb, void *user_data); 52 53 /* 54 * Handle security level changed on link passing HCI status of performed 55 * security procedure. 56 */ 57 void l2cap_br_encrypt_change(struct bt_conn *conn, uint8_t hci_status); 58 59 /* Handle received data */ 60 void bt_l2cap_br_recv(struct bt_conn *conn, struct net_buf *buf); 61 62 /* Pull HCI fragments from buffers intended for `conn` */ 63 struct net_buf *l2cap_br_data_pull(struct bt_conn *conn, 64 size_t amount, 65 size_t *length); 66 67 /* Find L2CAP BR channel by using specific cid on specific connection */ 68 struct bt_l2cap_chan *bt_l2cap_br_lookup_tx_cid(struct bt_conn *conn, 69 uint16_t cid); 70 71 /* Get remote supported fixed channels */ 72 uint8_t bt_l2cap_br_get_remote_fixed_chan(struct bt_conn *conn); 73
