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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
20enum amp_mgr_state {
21 READ_LOC_AMP_INFO,
22 READ_LOC_AMP_ASSOC,
23 READ_LOC_AMP_ASSOC_FINAL,
24 WRITE_REMOTE_AMP_ASSOC,
25};
26
27struct amp_mgr {
28 struct list_head list;
29 struct l2cap_conn *l2cap_conn;
30 struct l2cap_chan *a2mp_chan;
31 struct l2cap_chan *bredr_chan;
32 struct kref kref;
33 __u8 ident;
34 __u8 handle;
35 unsigned long state;
36 unsigned long flags;
37
38 struct list_head amp_ctrls;
39 struct mutex amp_ctrls_lock;
40};
41
42struct a2mp_cmd {
43 __u8 code;
44 __u8 ident;
45 __le16 len;
46 __u8 data[0];
47} __packed;
48
49/* A2MP command codes */
50#define A2MP_COMMAND_REJ 0x01
51struct a2mp_cmd_rej {
52 __le16 reason;
53 __u8 data[0];
54} __packed;
55
56#define A2MP_DISCOVER_REQ 0x02
57struct a2mp_discov_req {
58 __le16 mtu;
59 __le16 ext_feat;
60} __packed;
61
62struct a2mp_cl {
63 __u8 id;
64 __u8 type;
65 __u8 status;
66} __packed;
67
68#define A2MP_DISCOVER_RSP 0x03
69struct a2mp_discov_rsp {
70 __le16 mtu;
71 __le16 ext_feat;
72 struct a2mp_cl cl[0];
73} __packed;
74
75#define A2MP_CHANGE_NOTIFY 0x04
76#define A2MP_CHANGE_RSP 0x05
77
78#define A2MP_GETINFO_REQ 0x06
79struct a2mp_info_req {
80 __u8 id;
81} __packed;
82
83#define A2MP_GETINFO_RSP 0x07
84struct a2mp_info_rsp {
85 __u8 id;
86 __u8 status;
87 __le32 total_bw;
88 __le32 max_bw;
89 __le32 min_latency;
90 __le16 pal_cap;
91 __le16 assoc_size;
92} __packed;
93
94#define A2MP_GETAMPASSOC_REQ 0x08
95struct a2mp_amp_assoc_req {
96 __u8 id;
97} __packed;
98
99#define A2MP_GETAMPASSOC_RSP 0x09
100struct a2mp_amp_assoc_rsp {
101 __u8 id;
102 __u8 status;
103 __u8 amp_assoc[0];
104} __packed;
105
106#define A2MP_CREATEPHYSLINK_REQ 0x0A
107#define A2MP_DISCONNPHYSLINK_REQ 0x0C
108struct a2mp_physlink_req {
109 __u8 local_id;
110 __u8 remote_id;
111 __u8 amp_assoc[0];
112} __packed;
113
114#define A2MP_CREATEPHYSLINK_RSP 0x0B
115#define A2MP_DISCONNPHYSLINK_RSP 0x0D
116struct a2mp_physlink_rsp {
117 __u8 local_id;
118 __u8 remote_id;
119 __u8 status;
120} __packed;
121
122/* A2MP response status */
123#define A2MP_STATUS_SUCCESS 0x00
124#define A2MP_STATUS_INVALID_CTRL_ID 0x01
125#define A2MP_STATUS_UNABLE_START_LINK_CREATION 0x02
126#define A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS 0x02
127#define A2MP_STATUS_COLLISION_OCCURED 0x03
128#define A2MP_STATUS_DISCONN_REQ_RECVD 0x04
129#define A2MP_STATUS_PHYS_LINK_EXISTS 0x05
130#define A2MP_STATUS_SECURITY_VIOLATION 0x06
131
132struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr);
133
134#if IS_ENABLED(CONFIG_BT_HS)
135int amp_mgr_put(struct amp_mgr *mgr);
136struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
137 struct sk_buff *skb);
138void a2mp_discover_amp(struct l2cap_chan *chan);
139#else
140static inline int amp_mgr_put(struct amp_mgr *mgr)
141{
142 return 0;
143}
144
145static inline struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
146 struct sk_buff *skb)
147{
148 return NULL;
149}
150
151static inline void a2mp_discover_amp(struct l2cap_chan *chan)
152{
153}
154#endif
155
156void a2mp_send_getinfo_rsp(struct hci_dev *hdev);
157void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status);
158void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status);
159void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status);
160
161#endif /* __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 */