| /** @file |
| * @brief Internal APIs for Bluetooth L2CAP BR/EDR handling. |
| */ |
| |
| /* |
| * Copyright (c) 2015-2016 Intel Corporation |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <zephyr/bluetooth/l2cap.h> |
| #include <zephyr/sys/iterable_sections.h> |
| #include "l2cap_br_interface.h" |
| |
| #define BT_L2CAP_CID_BR_SIG 0x0001 |
| #define BT_L2CAP_CID_BR_SMP 0x0007 |
| #define BT_L2CAP_PSM_RFCOMM 0x0003 |
| |
| struct bt_l2cap_hdr { |
| uint16_t len; |
| uint16_t cid; |
| } __packed; |
| |
| struct bt_l2cap_sig_hdr { |
| uint8_t code; |
| uint8_t ident; |
| uint16_t len; |
| } __packed; |
| |
| #define BT_L2CAP_REJ_NOT_UNDERSTOOD 0x0000 |
| #define BT_L2CAP_REJ_MTU_EXCEEDED 0x0001 |
| #define BT_L2CAP_REJ_INVALID_CID 0x0002 |
| |
| #define BT_L2CAP_CMD_REJECT 0x01 |
| struct bt_l2cap_cmd_reject { |
| uint16_t reason; |
| uint8_t data[0]; |
| } __packed; |
| |
| struct bt_l2cap_cmd_reject_cid_data { |
| uint16_t scid; |
| uint16_t dcid; |
| } __packed; |
| |
| #define BT_L2CAP_CONN_REQ 0x02 |
| struct bt_l2cap_conn_req { |
| uint16_t psm; |
| uint16_t scid; |
| } __packed; |
| |
| /* command statuses in response */ |
| #define BT_L2CAP_CS_NO_INFO 0x0000 |
| #define BT_L2CAP_CS_AUTHEN_PEND 0x0001 |
| |
| /* valid results in conn response on BR/EDR */ |
| #define BT_L2CAP_BR_SUCCESS 0x0000 |
| #define BT_L2CAP_BR_PENDING 0x0001 |
| #define BT_L2CAP_BR_ERR_PSM_NOT_SUPP 0x0002 |
| #define BT_L2CAP_BR_ERR_SEC_BLOCK 0x0003 |
| #define BT_L2CAP_BR_ERR_NO_RESOURCES 0x0004 |
| #define BT_L2CAP_BR_ERR_INVALID_SCID 0x0006 |
| #define BT_L2CAP_BR_ERR_SCID_IN_USE 0x0007 |
| |
| #define BT_L2CAP_CONN_RSP 0x03 |
| struct bt_l2cap_conn_rsp { |
| uint16_t dcid; |
| uint16_t scid; |
| uint16_t result; |
| uint16_t status; |
| } __packed; |
| |
| #define BT_L2CAP_CONF_SUCCESS 0x0000 |
| #define BT_L2CAP_CONF_UNACCEPT 0x0001 |
| #define BT_L2CAP_CONF_REJECT 0x0002 |
| |
| #define BT_L2CAP_CONF_REQ 0x04 |
| struct bt_l2cap_conf_req { |
| uint16_t dcid; |
| uint16_t flags; |
| uint8_t data[0]; |
| } __packed; |
| |
| #define BT_L2CAP_CONF_RSP 0x05 |
| struct bt_l2cap_conf_rsp { |
| uint16_t scid; |
| uint16_t flags; |
| uint16_t result; |
| uint8_t data[0]; |
| } __packed; |
| |
| /* Option type used by MTU config request data */ |
| #define BT_L2CAP_CONF_OPT_MTU 0x01 |
| /* Options bits selecting most significant bit (hint) in type field */ |
| #define BT_L2CAP_CONF_HINT 0x80 |
| #define BT_L2CAP_CONF_MASK 0x7f |
| |
| struct bt_l2cap_conf_opt { |
| uint8_t type; |
| uint8_t len; |
| uint8_t data[0]; |
| } __packed; |
| |
| #define BT_L2CAP_DISCONN_REQ 0x06 |
| struct bt_l2cap_disconn_req { |
| uint16_t dcid; |
| uint16_t scid; |
| } __packed; |
| |
| #define BT_L2CAP_DISCONN_RSP 0x07 |
| struct bt_l2cap_disconn_rsp { |
| uint16_t dcid; |
| uint16_t scid; |
| } __packed; |
| |
| #define BT_L2CAP_INFO_FEAT_MASK 0x0002 |
| #define BT_L2CAP_INFO_FIXED_CHAN 0x0003 |
| |
| #define BT_L2CAP_INFO_REQ 0x0a |
| struct bt_l2cap_info_req { |
| uint16_t type; |
| } __packed; |
| |
| /* info result */ |
| #define BT_L2CAP_INFO_SUCCESS 0x0000 |
| #define BT_L2CAP_INFO_NOTSUPP 0x0001 |
| |
| #define BT_L2CAP_INFO_RSP 0x0b |
| struct bt_l2cap_info_rsp { |
| uint16_t type; |
| uint16_t result; |
| uint8_t data[0]; |
| } __packed; |
| |
| /* Need a name different than bt_l2cap_fixed_chan for a different section */ |
| struct bt_l2cap_br_fixed_chan { |
| uint16_t cid; |
| int (*accept)(struct bt_conn *conn, struct bt_l2cap_chan **chan); |
| }; |
| |
| #define BT_L2CAP_BR_CHANNEL_DEFINE(_name, _cid, _accept) \ |
| const STRUCT_SECTION_ITERABLE(bt_l2cap_br_fixed_chan, _name) = { \ |
| .cid = _cid, \ |
| .accept = _accept, \ |
| } |
| |
| #define BR_CHAN(_ch) CONTAINER_OF(_ch, struct bt_l2cap_br_chan, chan) |
| |
| /* Add channel to the connection */ |
| void bt_l2cap_chan_add(struct bt_conn *conn, struct bt_l2cap_chan *chan, |
| bt_l2cap_chan_destroy_t destroy); |
| |
| /* Remove channel from the connection */ |
| void bt_l2cap_chan_remove(struct bt_conn *conn, struct bt_l2cap_chan *chan); |
| |
| /* Delete channel */ |
| void bt_l2cap_br_chan_del(struct bt_l2cap_chan *chan); |
| |
| const char *bt_l2cap_chan_state_str(bt_l2cap_chan_state_t state); |
| |
| #if defined(CONFIG_BT_L2CAP_LOG_LEVEL_DBG) |
| void bt_l2cap_br_chan_set_state_debug(struct bt_l2cap_chan *chan, |
| bt_l2cap_chan_state_t state, |
| const char *func, int line); |
| #define bt_l2cap_br_chan_set_state(_chan, _state) \ |
| bt_l2cap_br_chan_set_state_debug(_chan, _state, __func__, __LINE__) |
| #else |
| void bt_l2cap_br_chan_set_state(struct bt_l2cap_chan *chan, |
| bt_l2cap_chan_state_t state); |
| #endif /* CONFIG_BT_L2CAP_LOG_LEVEL_DBG */ |
| |
| /* Prepare an L2CAP PDU to be sent over a connection */ |
| struct net_buf *bt_l2cap_create_pdu_timeout(struct net_buf_pool *pool, |
| size_t reserve, |
| k_timeout_t timeout); |
| |
| #define bt_l2cap_create_pdu(_pool, _reserve) \ |
| bt_l2cap_create_pdu_timeout(_pool, _reserve, K_FOREVER) |