include/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
  22 enum amp_mgr_state {
  23         READ_LOC_AMP_INFO,
  24         READ_LOC_AMP_ASSOC,
  25 };
  26
  27 struct amp_mgr {
  28         struct list_head        list;
  29         struct l2cap_conn       *l2cap_conn;
  30         struct l2cap_chan       *a2mp_chan;
  31         struct kref             kref;
  32         __u8                    ident;
  33         __u8                    handle;
  34         enum amp_mgr_state      state;
  35         unsigned long           flags;
  36 };
  37
  38 struct a2mp_cmd {
  39         __u8    code;
  40         __u8    ident;
  41         __le16  len;
  42         __u8    data[0];
  43 } __packed;
  44
  45 /* A2MP command codes */
  46 #define A2MP_COMMAND_REJ         0x01
  47 struct a2mp_cmd_rej {
  48         __le16  reason;
  49         __u8    data[0];
  50 } __packed;
  51
  52 #define A2MP_DISCOVER_REQ        0x02
  53 struct a2mp_discov_req {
  54         __le16  mtu;
  55         __le16  ext_feat;
  56 } __packed;
  57
  58 struct a2mp_cl {
  59         __u8    id;
  60         __u8    type;
  61         __u8    status;
  62 } __packed;
  63
  64 #define A2MP_DISCOVER_RSP        0x03
  65 struct a2mp_discov_rsp {
  66         __le16     mtu;
  67         __le16     ext_feat;
  68         struct a2mp_cl cl[0];
  69 } __packed;
  70
  71 #define A2MP_CHANGE_NOTIFY       0x04
  72 #define A2MP_CHANGE_RSP          0x05
  73
  74 #define A2MP_GETINFO_REQ         0x06
  75 struct a2mp_info_req {
  76         __u8       id;
  77 } __packed;
  78
  79 #define A2MP_GETINFO_RSP         0x07
  80 struct a2mp_info_rsp {
  81         __u8    id;
  82         __u8    status;
  83         __le32  total_bw;
  84         __le32  max_bw;
  85         __le32  min_latency;
  86         __le16  pal_cap;
  87         __le16  assoc_size;
  88 } __packed;
  89
  90 #define A2MP_GETAMPASSOC_REQ     0x08
  91 struct a2mp_amp_assoc_req {
  92         __u8    id;
  93 } __packed;
  94
  95 #define A2MP_GETAMPASSOC_RSP     0x09
  96 struct a2mp_amp_assoc_rsp {
  97         __u8    id;
  98         __u8    status;
  99         __u8    amp_assoc[0];
 100 } __packed;
 101
 102 #define A2MP_CREATEPHYSLINK_REQ  0x0A
 103 #define A2MP_DISCONNPHYSLINK_REQ 0x0C
 104 struct a2mp_physlink_req {
 105         __u8    local_id;
 106         __u8    remote_id;
 107         __u8    amp_assoc[0];
 108 } __packed;
 109
 110 #define A2MP_CREATEPHYSLINK_RSP  0x0B
 111 #define A2MP_DISCONNPHYSLINK_RSP 0x0D
 112 struct a2mp_physlink_rsp {
 113         __u8    local_id;
 114         __u8    remote_id;
 115         __u8    status;
 116 } __packed;
 117
 118 /* A2MP response status */
 119 #define A2MP_STATUS_SUCCESS                     0x00
 120 #define A2MP_STATUS_INVALID_CTRL_ID             0x01
 121 #define A2MP_STATUS_UNABLE_START_LINK_CREATION  0x02
 122 #define A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS     0x02
 123 #define A2MP_STATUS_COLLISION_OCCURED           0x03
 124 #define A2MP_STATUS_DISCONN_REQ_RECVD           0x04
 125 #define A2MP_STATUS_PHYS_LINK_EXISTS            0x05
 126 #define A2MP_STATUS_SECURITY_VIOLATION          0x06
 127
 128 extern struct list_head amp_mgr_list;
 129 extern struct mutex amp_mgr_list_lock;
 130
 131 void amp_mgr_get(struct amp_mgr *mgr);
 132 int amp_mgr_put(struct amp_mgr *mgr);
 133 struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
 134                                        struct sk_buff *skb);
 135 struct amp_mgr *amp_mgr_lookup_by_state(u8 state);
 136 void a2mp_send(struct amp_mgr *mgr, u8 code, u8 ident, u16 len, void *data);
 137 void a2mp_send_getinfo_rsp(struct hci_dev *hdev);
 138 void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status);
 139
 140 #endif /* __A2MP_H */