release/src-rt-6.x/linux/linux-2.6/include/net/bluetooth/l2cap.h

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (C) 2000-2001 Qualcomm Incorporated
   4
   5    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation;
  10
  11    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22    SOFTWARE IS DISCLAIMED.
  23 */
  24
  25 #ifndef __L2CAP_H
  26 #define __L2CAP_H
  27
  28 /* L2CAP defaults */
  29 #define L2CAP_DEFAULT_MTU       672
  30 #define L2CAP_DEFAULT_FLUSH_TO  0xFFFF
  31
  32 #define L2CAP_CONN_TIMEOUT      (HZ * 40)
  33
  34 /* L2CAP socket address */
  35 struct sockaddr_l2 {
  36         sa_family_t     l2_family;
  37         unsigned short  l2_psm;
  38         bdaddr_t        l2_bdaddr;
  39 };
  40
  41 /* L2CAP socket options */
  42 #define L2CAP_OPTIONS   0x01
  43 struct l2cap_options {
  44         __u16 omtu;
  45         __u16 imtu;
  46         __u16 flush_to;
  47         __u8  mode;
  48 };
  49
  50 #define L2CAP_CONNINFO  0x02
  51 struct l2cap_conninfo {
  52         __u16 hci_handle;
  53         __u8  dev_class[3];
  54 };
  55
  56 #define L2CAP_LM        0x03
  57 #define L2CAP_LM_MASTER         0x0001
  58 #define L2CAP_LM_AUTH           0x0002
  59 #define L2CAP_LM_ENCRYPT        0x0004
  60 #define L2CAP_LM_TRUSTED        0x0008
  61 #define L2CAP_LM_RELIABLE       0x0010
  62 #define L2CAP_LM_SECURE         0x0020
  63
  64 /* L2CAP command codes */
  65 #define L2CAP_COMMAND_REJ 0x01
  66 #define L2CAP_CONN_REQ    0x02
  67 #define L2CAP_CONN_RSP    0x03
  68 #define L2CAP_CONF_REQ    0x04
  69 #define L2CAP_CONF_RSP    0x05
  70 #define L2CAP_DISCONN_REQ 0x06
  71 #define L2CAP_DISCONN_RSP 0x07
  72 #define L2CAP_ECHO_REQ    0x08
  73 #define L2CAP_ECHO_RSP    0x09
  74 #define L2CAP_INFO_REQ    0x0a
  75 #define L2CAP_INFO_RSP    0x0b
  76
  77 /* L2CAP structures */
  78 struct l2cap_hdr {
  79         __u16      len;
  80         __u16      cid;
  81 } __attribute__ ((packed));
  82 #define L2CAP_HDR_SIZE          4
  83
  84 struct l2cap_cmd_hdr {
  85         __u8       code;
  86         __u8       ident;
  87         __u16      len;
  88 } __attribute__ ((packed));
  89 #define L2CAP_CMD_HDR_SIZE      4
  90
  91 struct l2cap_cmd_rej {
  92         __u16      reason;
  93 } __attribute__ ((packed));
  94
  95 struct l2cap_conn_req {
  96         __u16      psm;
  97         __u16      scid;
  98 } __attribute__ ((packed));
  99
 100 struct l2cap_conn_rsp {
 101         __u16      dcid;
 102         __u16      scid;
 103         __u16      result;
 104         __u16      status;
 105 } __attribute__ ((packed));
 106
 107 /* connect result */
 108 #define L2CAP_CR_SUCCESS    0x0000
 109 #define L2CAP_CR_PEND       0x0001
 110 #define L2CAP_CR_BAD_PSM    0x0002
 111 #define L2CAP_CR_SEC_BLOCK  0x0003
 112 #define L2CAP_CR_NO_MEM     0x0004
 113
 114 /* connect status */
 115 #define L2CAP_CS_NO_INFO      0x0000
 116 #define L2CAP_CS_AUTHEN_PEND  0x0001
 117 #define L2CAP_CS_AUTHOR_PEND  0x0002
 118
 119 struct l2cap_conf_req {
 120         __u16      dcid;
 121         __u16      flags;
 122         __u8       data[0];
 123 } __attribute__ ((packed));
 124
 125 struct l2cap_conf_rsp {
 126         __u16      scid;
 127         __u16      flags;
 128         __u16      result;
 129         __u8       data[0];
 130 } __attribute__ ((packed));
 131
 132 #define L2CAP_CONF_SUCCESS      0x0000
 133 #define L2CAP_CONF_UNACCEPT     0x0001
 134 #define L2CAP_CONF_REJECT       0x0002
 135 #define L2CAP_CONF_UNKNOWN      0x0003
 136
 137 struct l2cap_conf_opt {
 138         __u8       type;
 139         __u8       len;
 140         __u8       val[0];
 141 } __attribute__ ((packed));
 142 #define L2CAP_CONF_OPT_SIZE     2
 143
 144 #define L2CAP_CONF_MTU          0x01
 145 #define L2CAP_CONF_FLUSH_TO     0x02
 146 #define L2CAP_CONF_QOS          0x03
 147 #define L2CAP_CONF_RFC          0x04
 148
 149 #define L2CAP_CONF_MAX_SIZE     22
 150
 151 struct l2cap_disconn_req {
 152         __u16      dcid;
 153         __u16      scid;
 154 } __attribute__ ((packed));
 155
 156 struct l2cap_disconn_rsp {
 157         __u16      dcid;
 158         __u16      scid;
 159 } __attribute__ ((packed));
 160
 161 struct l2cap_info_req {
 162         __u16       type;
 163         __u8        data[0];
 164 } __attribute__ ((packed));
 165
 166 struct l2cap_info_rsp {
 167         __u16       type;
 168         __u16       result;
 169         __u8        data[0];
 170 } __attribute__ ((packed));
 171
 172 /* info type */
 173 #define L2CAP_IT_CL_MTU     0x0001
 174 #define L2CAP_IT_FEAT_MASK  0x0002
 175
 176 /* info result */
 177 #define L2CAP_IR_SUCCESS    0x0000
 178 #define L2CAP_IR_NOTSUPP    0x0001
 179
 180 /* ----- L2CAP connections ----- */
 181 struct l2cap_chan_list {
 182         struct sock     *head;
 183         rwlock_t        lock;
 184         long            num;
 185 };
 186
 187 struct l2cap_conn {
 188         struct hci_conn *hcon;
 189
 190         bdaddr_t        *dst;
 191         bdaddr_t        *src;
 192
 193         unsigned int    mtu;
 194
 195         spinlock_t      lock;
 196
 197         struct sk_buff *rx_skb;
 198         __u32           rx_len;
 199         __u8            rx_ident;
 200         __u8            tx_ident;
 201
 202         struct l2cap_chan_list chan_list;
 203 };
 204
 205 /* ----- L2CAP channel and socket info ----- */
 206 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
 207
 208 struct l2cap_pinfo {
 209         struct bt_sock  bt;
 210         __u16           psm;
 211         __u16           dcid;
 212         __u16           scid;
 213
 214         __u16           imtu;
 215         __u16           omtu;
 216         __u16           flush_to;
 217
 218         __u32           link_mode;
 219
 220         __u8            conf_req[64];
 221         __u8            conf_len;
 222         __u8            conf_state;
 223         __u8            conf_retry;
 224         __u16           conf_mtu;
 225
 226         __u8            ident;
 227
 228         __u16           sport;
 229
 230         struct l2cap_conn       *conn;
 231         struct sock             *next_c;
 232         struct sock             *prev_c;
 233 };
 234
 235 #define L2CAP_CONF_REQ_SENT    0x01
 236 #define L2CAP_CONF_INPUT_DONE  0x02
 237 #define L2CAP_CONF_OUTPUT_DONE 0x04
 238 #define L2CAP_CONF_MAX_RETRIES 2
 239
 240 void l2cap_load(void);
 241
 242 #endif /* __L2CAP_H */