release/src/linux/linux/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 /*
  26  *  $Id: l2cap.h,v 1.1.1.1 2002/03/08 21:03:15 maxk Exp $
  27  */
  28
  29 #ifndef __L2CAP_H
  30 #define __L2CAP_H
  31
  32 /* L2CAP defaults */
  33 #define L2CAP_DEFAULT_MTU       672
  34 #define L2CAP_DEFAULT_FLUSH_TO  0xFFFF
  35
  36 #define L2CAP_CONN_TIMEOUT      (HZ * 40)
  37
  38 /* L2CAP socket address */
  39 struct sockaddr_l2 {
  40         sa_family_t     l2_family;
  41         unsigned short  l2_psm;
  42         bdaddr_t        l2_bdaddr;
  43 };
  44
  45 /* Socket options */
  46 #define L2CAP_OPTIONS   0x01
  47 struct l2cap_options {
  48         __u16 omtu;
  49         __u16 imtu;
  50         __u16 flush_to;
  51 };
  52
  53 #define L2CAP_CONNINFO  0x02
  54 struct l2cap_conninfo {
  55         __u16 hci_handle;
  56 };
  57
  58 #define L2CAP_LM        0x03
  59 #define L2CAP_LM_MASTER         0x0001
  60 #define L2CAP_LM_AUTH           0x0002
  61 #define L2CAP_LM_ENCRYPT        0x0004
  62 #define L2CAP_LM_TRUSTED        0x0008
  63 #define L2CAP_LM_RELIABLE       0x0010
  64
  65 #define L2CAP_QOS       0x04
  66 struct l2cap_qos {
  67         __u16 service_type;
  68         __u32 token_rate;
  69         __u32 token_bucket_size;
  70         __u32 peak_bandwidth;
  71         __u32 latency;
  72         __u32 delay_variation;
  73 };
  74
  75 #define L2CAP_SERV_NO_TRAFFIC   0x00
  76 #define L2CAP_SERV_BEST_EFFORT  0x01
  77 #define L2CAP_SERV_GUARANTEED   0x02
  78
  79 /* L2CAP command codes */
  80 #define L2CAP_COMMAND_REJ 0x01
  81 #define L2CAP_CONN_REQ    0x02
  82 #define L2CAP_CONN_RSP    0x03
  83 #define L2CAP_CONF_REQ    0x04
  84 #define L2CAP_CONF_RSP    0x05
  85 #define L2CAP_DISCONN_REQ 0x06
  86 #define L2CAP_DISCONN_RSP 0x07
  87 #define L2CAP_ECHO_REQ    0x08
  88 #define L2CAP_ECHO_RSP    0x09
  89 #define L2CAP_INFO_REQ    0x0a
  90 #define L2CAP_INFO_RSP    0x0b
  91
  92 /* L2CAP structures */
  93 typedef struct {
  94         __u16      len;
  95         __u16      cid;
  96 } __attribute__ ((packed))      l2cap_hdr;
  97 #define L2CAP_HDR_SIZE          4
  98
  99 typedef struct {
 100         __u8       code;
 101         __u8       ident;
 102         __u16      len;
 103 } __attribute__ ((packed))      l2cap_cmd_hdr;
 104 #define L2CAP_CMD_HDR_SIZE      4
 105
 106 typedef struct {
 107         __u16      reason;
 108 } __attribute__ ((packed))      l2cap_cmd_rej;
 109 #define L2CAP_CMD_REJ_SIZE      2
 110
 111 typedef struct {
 112         __u16      psm;
 113         __u16      scid;
 114 } __attribute__ ((packed))      l2cap_conn_req;
 115 #define L2CAP_CONN_REQ_SIZE     4
 116
 117 typedef struct {
 118         __u16      dcid;
 119         __u16      scid;
 120         __u16      result;
 121         __u16      status;
 122 } __attribute__ ((packed))      l2cap_conn_rsp;
 123 #define L2CAP_CONN_RSP_SIZE     8
 124
 125 /* connect result */
 126 #define L2CAP_CR_SUCCESS    0x0000
 127 #define L2CAP_CR_PEND       0x0001
 128 #define L2CAP_CR_BAD_PSM    0x0002
 129 #define L2CAP_CR_SEC_BLOCK  0x0003
 130 #define L2CAP_CR_NO_MEM     0x0004
 131
 132 /* connect status */
 133 #define L2CAP_CS_NO_INFO      0x0000
 134 #define L2CAP_CS_AUTHEN_PEND  0x0001
 135 #define L2CAP_CS_AUTHOR_PEND  0x0002
 136
 137 typedef struct {
 138         __u16      dcid;
 139         __u16      flags;
 140         __u8       data[0];
 141 } __attribute__ ((packed))      l2cap_conf_req;
 142 #define L2CAP_CONF_REQ_SIZE     4
 143
 144 typedef struct {
 145         __u16      scid;
 146         __u16      flags;
 147         __u16      result;
 148         __u8       data[0];
 149 } __attribute__ ((packed))      l2cap_conf_rsp;
 150 #define L2CAP_CONF_RSP_SIZE     6
 151
 152 #define L2CAP_CONF_SUCCESS      0x00
 153 #define L2CAP_CONF_UNACCEPT     0x01
 154
 155 typedef struct {
 156         __u8       type;
 157         __u8       len;
 158         __u8       val[0];
 159 } __attribute__ ((packed))      l2cap_conf_opt;
 160 #define L2CAP_CONF_OPT_SIZE     2
 161
 162 #define L2CAP_CONF_MTU          0x01
 163 #define L2CAP_CONF_FLUSH_TO     0x02
 164 #define L2CAP_CONF_QOS          0x03
 165
 166 #define L2CAP_CONF_MAX_SIZE     22
 167
 168 typedef struct {
 169         __u16      dcid;
 170         __u16      scid;
 171 } __attribute__ ((packed))      l2cap_disconn_req;
 172 #define L2CAP_DISCONN_REQ_SIZE  4
 173
 174 typedef struct {
 175         __u16      dcid;
 176         __u16      scid;
 177 } __attribute__ ((packed))      l2cap_disconn_rsp;
 178 #define L2CAP_DISCONN_RSP_SIZE  4
 179
 180 typedef struct {
 181         __u16       type;
 182         __u8        data[0];
 183 } __attribute__ ((packed))      l2cap_info_req;
 184 #define L2CAP_INFO_REQ_SIZE     2
 185
 186 typedef struct {
 187         __u16       type;
 188         __u16       result;
 189         __u8        data[0];
 190 } __attribute__ ((packed))      l2cap_info_rsp;
 191 #define L2CAP_INFO_RSP_SIZE     4
 192
 193 /* info type */
 194 #define L2CAP_IT_CL_MTU     0x0001
 195 #define L2CAP_IT_FEAT_MASK  0x0002
 196
 197 /* info result */
 198 #define L2CAP_IR_SUCCESS    0x0000
 199 #define L2CAP_IR_NOTSUPP    0x0001
 200
 201 /* ----- L2CAP connections ----- */
 202 struct l2cap_chan_list {
 203         struct sock     *head;
 204         rwlock_t        lock;
 205         long            num;
 206 };
 207
 208 struct l2cap_conn {
 209         struct hci_conn *hcon;
 210
 211         bdaddr_t        *dst;
 212         bdaddr_t        *src;
 213
 214         unsigned int    mtu;
 215
 216         spinlock_t      lock;
 217
 218         struct sk_buff *rx_skb;
 219         __u32           rx_len;
 220         __u8            rx_ident;
 221         __u8            tx_ident;
 222
 223         struct l2cap_chan_list chan_list;
 224 };
 225
 226 /* ----- L2CAP channel and socket info ----- */
 227 #define l2cap_pi(sk)   ((struct l2cap_pinfo *) &sk->tp_pinfo)
 228
 229 struct l2cap_pinfo {
 230         __u16           psm;
 231         __u16           dcid;
 232         __u16           scid;
 233
 234         __u16           imtu;
 235         __u16           omtu;
 236         __u16           flush_to;
 237
 238         __u32           link_mode;
 239
 240         __u8            conf_state;
 241         __u8            conf_retry;
 242         __u16           conf_mtu;
 243
 244         __u8            ident;
 245
 246         struct l2cap_conn       *conn;
 247         struct sock             *next_c;
 248         struct sock             *prev_c;
 249 };
 250
 251 #define L2CAP_CONF_REQ_SENT    0x01
 252 #define L2CAP_CONF_INPUT_DONE  0x02
 253 #define L2CAP_CONF_OUTPUT_DONE 0x04
 254 #define L2CAP_CONF_MAX_RETRIES 2
 255
 256 void l2cap_load(void);
 257
 258 #endif /* __L2CAP_H */