Root/net/bluetooth/a2mp.h

1/*
2   Copyright (c) 2010,2011 Code Aurora Forum. All rights reserved.
3   Copyright (c) 2011,2012 Intel Corp.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License version 2 and
7   only version 2 as published by the Free Software Foundation.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12   GNU General Public License for more details.
13*/
14
15#ifndef __A2MP_H
16#define __A2MP_H
17
18#include <net/bluetooth/l2cap.h>
19
20#define A2MP_FEAT_EXT 0x8000
21
22enum amp_mgr_state {
23    READ_LOC_AMP_INFO,
24    READ_LOC_AMP_ASSOC,
25    READ_LOC_AMP_ASSOC_FINAL,
26    WRITE_REMOTE_AMP_ASSOC,
27};
28
29struct amp_mgr {
30    struct list_head list;
31    struct l2cap_conn *l2cap_conn;
32    struct l2cap_chan *a2mp_chan;
33    struct l2cap_chan *bredr_chan;
34    struct kref kref;
35    __u8 ident;
36    __u8 handle;
37    unsigned long state;
38    unsigned long flags;
39
40    struct list_head amp_ctrls;
41    struct mutex amp_ctrls_lock;
42};
43
44struct a2mp_cmd {
45    __u8 code;
46    __u8 ident;
47    __le16 len;
48    __u8 data[0];
49} __packed;
50
51/* A2MP command codes */
52#define A2MP_COMMAND_REJ 0x01
53struct a2mp_cmd_rej {
54    __le16 reason;
55    __u8 data[0];
56} __packed;
57
58#define A2MP_DISCOVER_REQ 0x02
59struct a2mp_discov_req {
60    __le16 mtu;
61    __le16 ext_feat;
62} __packed;
63
64struct a2mp_cl {
65    __u8 id;
66    __u8 type;
67    __u8 status;
68} __packed;
69
70#define A2MP_DISCOVER_RSP 0x03
71struct a2mp_discov_rsp {
72    __le16 mtu;
73    __le16 ext_feat;
74    struct a2mp_cl cl[0];
75} __packed;
76
77#define A2MP_CHANGE_NOTIFY 0x04
78#define A2MP_CHANGE_RSP 0x05
79
80#define A2MP_GETINFO_REQ 0x06
81struct a2mp_info_req {
82    __u8 id;
83} __packed;
84
85#define A2MP_GETINFO_RSP 0x07
86struct a2mp_info_rsp {
87    __u8 id;
88    __u8 status;
89    __le32 total_bw;
90    __le32 max_bw;
91    __le32 min_latency;
92    __le16 pal_cap;
93    __le16 assoc_size;
94} __packed;
95
96#define A2MP_GETAMPASSOC_REQ 0x08
97struct a2mp_amp_assoc_req {
98    __u8 id;
99} __packed;
100
101#define A2MP_GETAMPASSOC_RSP 0x09
102struct a2mp_amp_assoc_rsp {
103    __u8 id;
104    __u8 status;
105    __u8 amp_assoc[0];
106} __packed;
107
108#define A2MP_CREATEPHYSLINK_REQ 0x0A
109#define A2MP_DISCONNPHYSLINK_REQ 0x0C
110struct a2mp_physlink_req {
111    __u8 local_id;
112    __u8 remote_id;
113    __u8 amp_assoc[0];
114} __packed;
115
116#define A2MP_CREATEPHYSLINK_RSP 0x0B
117#define A2MP_DISCONNPHYSLINK_RSP 0x0D
118struct a2mp_physlink_rsp {
119    __u8 local_id;
120    __u8 remote_id;
121    __u8 status;
122} __packed;
123
124/* A2MP response status */
125#define A2MP_STATUS_SUCCESS 0x00
126#define A2MP_STATUS_INVALID_CTRL_ID 0x01
127#define A2MP_STATUS_UNABLE_START_LINK_CREATION 0x02
128#define A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS 0x02
129#define A2MP_STATUS_COLLISION_OCCURED 0x03
130#define A2MP_STATUS_DISCONN_REQ_RECVD 0x04
131#define A2MP_STATUS_PHYS_LINK_EXISTS 0x05
132#define A2MP_STATUS_SECURITY_VIOLATION 0x06
133
134extern struct list_head amp_mgr_list;
135extern struct mutex amp_mgr_list_lock;
136
137struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr);
138int amp_mgr_put(struct amp_mgr *mgr);
139u8 __next_ident(struct amp_mgr *mgr);
140struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
141                       struct sk_buff *skb);
142struct amp_mgr *amp_mgr_lookup_by_state(u8 state);
143void a2mp_send(struct amp_mgr *mgr, u8 code, u8 ident, u16 len, void *data);
144void a2mp_discover_amp(struct l2cap_chan *chan);
145void a2mp_send_getinfo_rsp(struct hci_dev *hdev);
146void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status);
147void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status);
148void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status);
149
150#endif /* __A2MP_H */
151

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