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/* SPDX-License-Identifier: GPL-2.0-only */
/*
Copyright (c) 2010,2011 Code Aurora Forum. All rights reserved.
Copyright (c) 2011,2012 Intel Corp.
*/
#ifndef __A2MP_H
#define __A2MP_H
#include <net/bluetooth/l2cap.h>
enum amp_mgr_state {
READ_LOC_AMP_INFO,
READ_LOC_AMP_ASSOC,
READ_LOC_AMP_ASSOC_FINAL,
WRITE_REMOTE_AMP_ASSOC,
};
struct amp_mgr {
struct list_head list;
struct l2cap_conn *l2cap_conn;
struct l2cap_chan *a2mp_chan;
struct l2cap_chan *bredr_chan;
struct kref kref;
__u8 ident;
__u8 handle;
unsigned long state;
unsigned long flags;
struct list_head amp_ctrls;
struct mutex amp_ctrls_lock;
};
struct a2mp_cmd {
__u8 code;
__u8 ident;
__le16 len;
__u8 data[0];
} __packed;
/* A2MP command codes */
#define A2MP_COMMAND_REJ 0x01
struct a2mp_cmd_rej {
__le16 reason;
__u8 data[0];
} __packed;
#define A2MP_DISCOVER_REQ 0x02
struct a2mp_discov_req {
__le16 mtu;
__le16 ext_feat;
} __packed;
struct a2mp_cl {
__u8 id;
__u8 type;
__u8 status;
} __packed;
#define A2MP_DISCOVER_RSP 0x03
struct a2mp_discov_rsp {
__le16 mtu;
__le16 ext_feat;
struct a2mp_cl cl[0];
} __packed;
#define A2MP_CHANGE_NOTIFY 0x04
#define A2MP_CHANGE_RSP 0x05
#define A2MP_GETINFO_REQ 0x06
struct a2mp_info_req {
__u8 id;
} __packed;
#define A2MP_GETINFO_RSP 0x07
struct a2mp_info_rsp {
__u8 id;
__u8 status;
__le32 total_bw;
__le32 max_bw;
__le32 min_latency;
__le16 pal_cap;
__le16 assoc_size;
} __packed;
#define A2MP_GETAMPASSOC_REQ 0x08
struct a2mp_amp_assoc_req {
__u8 id;
} __packed;
#define A2MP_GETAMPASSOC_RSP 0x09
struct a2mp_amp_assoc_rsp {
__u8 id;
__u8 status;
__u8 amp_assoc[0];
} __packed;
#define A2MP_CREATEPHYSLINK_REQ 0x0A
#define A2MP_DISCONNPHYSLINK_REQ 0x0C
struct a2mp_physlink_req {
__u8 local_id;
__u8 remote_id;
__u8 amp_assoc[0];
} __packed;
#define A2MP_CREATEPHYSLINK_RSP 0x0B
#define A2MP_DISCONNPHYSLINK_RSP 0x0D
struct a2mp_physlink_rsp {
__u8 local_id;
__u8 remote_id;
__u8 status;
} __packed;
/* A2MP response status */
#define A2MP_STATUS_SUCCESS 0x00
#define A2MP_STATUS_INVALID_CTRL_ID 0x01
#define A2MP_STATUS_UNABLE_START_LINK_CREATION 0x02
#define A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS 0x02
#define A2MP_STATUS_COLLISION_OCCURED 0x03
#define A2MP_STATUS_DISCONN_REQ_RECVD 0x04
#define A2MP_STATUS_PHYS_LINK_EXISTS 0x05
#define A2MP_STATUS_SECURITY_VIOLATION 0x06
struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr);
#if IS_ENABLED(CONFIG_BT_HS)
int amp_mgr_put(struct amp_mgr *mgr);
struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
struct sk_buff *skb);
void a2mp_discover_amp(struct l2cap_chan *chan);
#else
static inline int amp_mgr_put(struct amp_mgr *mgr)
{
return 0;
}
static inline struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
struct sk_buff *skb)
{
return NULL;
}
static inline void a2mp_discover_amp(struct l2cap_chan *chan)
{
}
#endif
void a2mp_send_getinfo_rsp(struct hci_dev *hdev);
void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status);
void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status);
void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status);
#endif /* __A2MP_H */
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