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         READ_LOC_AMP_ASSOC_FINAL,
  26         WRITE_REMOTE_AMP_ASSOC,
  27 };
  28
  29 struct 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
  44 struct 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
  53 struct a2mp_cmd_rej {
  54         __le16  reason;
  55         __u8    data[0];
  56 } __packed;
  57
  58 #define A2MP_DISCOVER_REQ        0x02
  59 struct a2mp_discov_req {
  60         __le16  mtu;
  61         __le16  ext_feat;
  62 } __packed;
  63
  64 struct a2mp_cl {
  65         __u8    id;
  66         __u8    type;
  67         __u8    status;
  68 } __packed;
  69
  70 #define A2MP_DISCOVER_RSP        0x03
  71 struct 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
  81 struct a2mp_info_req {
  82         __u8       id;
  83 } __packed;
  84
  85 #define A2MP_GETINFO_RSP         0x07
  86 struct 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
  97 struct a2mp_amp_assoc_req {
  98         __u8    id;
  99 } __packed;
 100
 101 #define A2MP_GETAMPASSOC_RSP     0x09
 102 struct 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
 110 struct 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
 118 struct 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
 134 extern struct list_head amp_mgr_list;
 135 extern struct mutex amp_mgr_list_lock;
 136
 137 struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr);
 138 int amp_mgr_put(struct amp_mgr *mgr);
 139 u8 __next_ident(struct amp_mgr *mgr);
 140 struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
 141                                        struct sk_buff *skb);
 142 struct amp_mgr *amp_mgr_lookup_by_state(u8 state);
 143 void a2mp_send(struct amp_mgr *mgr, u8 code, u8 ident, u16 len, void *data);
 144 void a2mp_discover_amp(struct l2cap_chan *chan);
 145 void a2mp_send_getinfo_rsp(struct hci_dev *hdev);
 146 void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status);
 147 void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status);
 148 void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status);
 149
 150 #endif /* __A2MP_H */